Add some new features

1.Compile with cmake
2.Support for fixing codeItem
3.Optimisation de l'espace de stockage

Bcore/black-hook/src/main/java/top/niunaijun/jnihook/MethodUtils.java

@@ -11,6 +11,7 @@ package top.niunaijun.jnihook;
 
 import androidx.annotation.Keep;
 
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
 
 @Keep
@@ -39,6 +40,18 @@ public class MethodUtils {
         return buf.toString();
     }
 
+    // native call
+    public static String getDesc(final Constructor<?> method) {
+        final StringBuffer buf = new StringBuffer();
+        buf.append("(");
+        final Class<?>[] types = method.getParameterTypes();
+        for (int i = 0; i < types.length; ++i) {
+            buf.append(getDesc(types[i]));
+        }
+        buf.append(")V");
+        return buf.toString();
+    }
+
     private static String getDesc(final Class<?> returnType) {
         if (returnType.isPrimitive()) {
             return getPrimitiveLetter(returnType);

Bcore/black-hook/src/main/java/top/niunaijun/jnihook/ReflectCore.java

@@ -1,37 +0,0 @@
-package top.niunaijun.jnihook;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-
-import top.niunaijun.jnihook.jni.JniHook;
-
-/**
- * Created by Milk on 2021/5/7.
- * * ∧＿∧
- * (`･ω･∥
- * 丶　つ０
- * しーＪ
- * 此处无Bug
- */
-public class ReflectCore {
-
-    public static void set(Class<?> clazz) {
-        try {
-            Field accessFlags = Class.class.getDeclaredField("accessFlags");
-            accessFlags.setAccessible(true);
-            int o = (int) accessFlags.get(clazz);
-            accessFlags.set(clazz, o | 0x0001);
-        } catch (Throwable e) {
-            e.printStackTrace();
-        }
-        for (Method declaredMethod : clazz.getDeclaredMethods()) {
-            JniHook.setAccessible(clazz, declaredMethod);
-        }
-        for (Field declaredField : clazz.getDeclaredFields()) {
-            JniHook.setAccessible(clazz, declaredField);
-        }
-        for (Class<?> declaredClass : clazz.getDeclaredClasses()) {
-            set(declaredClass);
-        }
-    }
-}

Bcore/black-hook/src/main/java/top/niunaijun/jnihook/jni/ArtMethod.java

@@ -0,0 +1,16 @@
+package top.niunaijun.jnihook.jni;
+
+/**
+ * Created by Milk on 2021/6/5.
+ * * ∧＿∧
+ * (`･ω･∥
+ * 丶　つ０
+ * しーＪ
+ * 此处无Bug
+ */
+public class ArtMethod {
+
+    public static final native void nativeOffset();
+
+    public static final native void nativeOffset2();
+}

Bcore/black-hook/src/main/java/top/niunaijun/jnihook/jni/JniHook.java

@@ -1,26 +0,0 @@
-package top.niunaijun.jnihook.jni;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-
-/**
- * Created by Milk on 3/7/21.
- * * ∧＿∧
- * (`･ω･∥
- * 丶　つ０
- * しーＪ
- * 此处无Bug
- */
-public final class JniHook {
-    public static final int NATIVE_OFFSET = 0;
-
-    public static final int NATIVE_OFFSET_2 = 0;
-
-    public static final native void nativeOffset();
-
-    public static final native void nativeOffset2();
-
-    public static native void setAccessible(Class<?> clazz, Method method);
-
-    public static native void setAccessible(Class<?> clazz, Field field);
-}

Bcore/build.gradle

@@ -24,8 +24,8 @@ android {
         }
     }
     externalNativeBuild {
-        ndkBuild {
-            path file('src/main/jni/Android.mk')
+        cmake {
+            path file('./src/main/cpp/CMakeLists.txt')
         }
     }
     dexOptions {
@@ -62,7 +62,6 @@ tasks.withType(Javadoc) {
     options.addStringOption('charSet', 'UTF-8')
 }
 
-
 dependencies {
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation 'androidx.appcompat:appcompat:1.2.0'

Bcore/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,66 @@
+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html
+
+# Sets the minimum version of CMake required to build the native library.
+
+cmake_minimum_required(VERSION 3.4.1)
+
+# Creates and names a library, sets it as either STATIC
+# or SHARED, and provides the relative paths to its source code.
+# You can define multiple libraries, and CMake builds them for you.
+# Gradle automatically packages shared libraries with your APK.
+include_directories( dex )
+include_directories( base )
+include_directories( ./ )
+
+aux_source_directory(./ SRC7)
+aux_source_directory(xhook SRC6)
+aux_source_directory(ziparchive SRC1)
+aux_source_directory(dex SRC2)
+aux_source_directory(android-base SRC3)
+aux_source_directory(utils SRC4)
+aux_source_directory(hook SRC5)
+aux_source_directory(jnihook SRC6)
+add_compile_options(-w)
+add_library( # Sets the name of the library.
+             blackdex
+
+             # Sets the library as a shared library.
+             SHARED
+
+             # Provides a relative path to your source file(s).
+             VmCore.cpp
+        ${SRC3}
+        ${SRC1}
+        ${SRC2}
+        ${SRC4}
+        ${SRC5}
+        ${SRC6}
+        ${SRC7}
+        )
+
+# Searches for a specified prebuilt library and stores the path as a
+# variable. Because CMake includes system libraries in the search path by
+# default, you only need to specify the name of the public NDK library
+# you want to add. CMake verifies that the library exists before
+# completing its build.
+
+find_library( # Sets the name of the path variable.
+              log-lib
+
+              # Specifies the name of the NDK library that
+              # you want CMake to locate.
+              log )
+
+# Specifies libraries CMake should link to your target library. You
+# can link multiple libraries, such as libraries you define in this
+# build script, prebuilt third-party libraries, or system libraries.
+
+target_link_libraries( # Specifies the target library.
+                        blackdex
+
+                       # Links the target library to the log library
+                       # included in the NDK.
+                       ${log-lib}
+                       z
+        )

Bcore/src/main/cpp/DexDump.cpp

@@ -0,0 +1,174 @@
+//
+// Created by Milk on 2021/5/16.
+//
+
+#include "DexDump.h"
+#include "utils/HexDump.h"
+#include "utils/Log.h"
+#include "VmCore.h"
+#include "utils/PointerCheck.h"
+#include "jnihook/Art.h"
+#include "jnihook/ArtM.h"
+
+#include <cstdio>
+#include <fcntl.h>
+#include <cstring>
+#include <cstdlib>
+#include <map>
+#include "unistd.h"
+
+#include "dex/dex_file.h"
+#include "dex/dex_file_loader.h"
+#include "jnihook/JniHook.h"
+#include "xhook/xhook.h"
+
+using namespace std;
+static int beginOffset = -2;
+
+HOOK_JNI(int, kill, pid_t __pid, int __signal) {
+    ALOGE("hooked so kill");
+    return 0;
+}
+
+HOOK_JNI(int, killpg, int __pgrp, int __signal) {
+    ALOGE("hooked so killpg");
+    return 0;
+}
+
+void init(JNIEnv *env) {
+    const char *soName = ".*\\.so$";
+    xhook_register(soName, "kill", (void *) new_kill,
+                   (void **) (&orig_kill));
+    xhook_register(soName, "killpg", (void *) new_killpg,
+                   (void **) (&orig_killpg));
+    xhook_refresh(0);
+
+    jlongArray emptyCookie = VmCore::loadEmptyDex(env);
+    jsize arrSize = env->GetArrayLength(emptyCookie);
+    if (env->ExceptionCheck() == JNI_TRUE) {
+        return;
+    }
+    jlong *long_data = env->GetLongArrayElements(emptyCookie, nullptr);
+
+    for (int i = 0; i < arrSize; ++i) {
+        jlong cookie = long_data[i];
+        if (cookie == 0) {
+            continue;
+        }
+        auto dex = reinterpret_cast<char *>(cookie);
+        for (int ii = 0; ii < 10; ++ii) {
+            auto value = *(size_t *) (dex + ii * sizeof(size_t));
+            if (value == 1872) {
+                beginOffset = ii - 1;
+                // auto dexBegin = *(size_t *) (dex + beginOffset * sizeof(size_t));
+                // HexDump(reinterpret_cast<char *>(dexBegin), 10, 0);
+                env->ReleaseLongArrayElements(emptyCookie, long_data, 0);
+                return;
+            }
+        }
+    }
+    env->ReleaseLongArrayElements(emptyCookie, long_data, 0);
+    beginOffset = -1;
+}
+
+void fixCodeItem(JNIEnv *env, const art_lkchan::DexFile *dex_file_, size_t begin) {
+    for (size_t classdef_ctr = 0;classdef_ctr < dex_file_->NumClassDefs(); ++classdef_ctr) {
+        const art_lkchan::DexFile::ClassDef &cd = dex_file_->GetClassDef(classdef_ctr);
+        const uint8_t *class_data = dex_file_->GetClassData(cd);
+        auto &classTypeId = dex_file_->GetTypeId(cd.class_idx_);
+        std::string class_name = dex_file_->GetTypeDescriptor(classTypeId);
+
+        if (class_data != nullptr) {
+            art_lkchan::ClassDataItemIterator cdit(*dex_file_, class_data);
+            cdit.SkipAllFields();
+            while (cdit.HasNextMethod()) {
+                if (cdit.GetMemberIndex() > dex_file_->NumMethodIds())
+                    continue;
+                const art_lkchan::DexFile::MethodId &method_id_item = dex_file_->GetMethodId(
+                        cdit.GetMemberIndex());
+                auto method_name = dex_file_->GetMethodName(method_id_item);
+                auto method_signature = dex_file_->GetMethodSignature(
+                        method_id_item).ToString().c_str();
+                auto java_method = VmCore::findMethod(env, class_name.c_str(), method_name,
+                                                      method_signature);
+                if (java_method) {
+                    auto artMethod = ArtM::GetArtMethod(env, java_method);
+                    const art_lkchan::DexFile::CodeItem *orig_code_item = cdit.GetMethodCodeItem();
+                    if (cdit.GetMethodCodeItemOffset() && orig_code_item) {
+                        auto codeItemSize = dex_file_->GetCodeItemSize(*orig_code_item);
+                        auto new_code_item =
+                                begin + ArtM::GetArtMethodDexCodeItemOffset(artMethod);
+                        memcpy((void *) orig_code_item,
+                               (void *) new_code_item,
+                               codeItemSize);
+                    }
+                } else {
+                    env->ExceptionClear();
+                }
+                cdit.Next();
+            }
+        }
+    }
+}
+
+void DexDump::dumpDex(JNIEnv *env, jlong cookie, jstring dir, jboolean fix) {
+    if (beginOffset == -2) {
+        init(env);
+    }
+    if (beginOffset == -1) {
+        ALOGD("dumpDex not support!");
+        return;
+    }
+    char magic[8] = {0x64, 0x65, 0x78, 0x0a, 0x30, 0x33, 0x35, 0x00};
+    auto base = reinterpret_cast<char *>(cookie);
+    auto begin = *(size_t *) (base + beginOffset * sizeof(size_t));
+    if (!PointerCheck::check(reinterpret_cast<void *>(begin))) {
+        return;
+    }
+    auto dirC = env->GetStringUTFChars(dir, 0);
+
+    auto dexSizeOffset = ((unsigned long) begin) + 0x20;
+    int size = *(size_t *) dexSizeOffset;
+
+    void *buffer = malloc(size);
+    if (buffer) {
+        memcpy(buffer, reinterpret_cast<const void *>(begin), size);
+        // fix magic
+        memcpy(buffer, magic, sizeof(magic));
+
+        const bool kVerifyChecksum = false;
+        const bool kVerify = true;
+        const art_lkchan::DexFileLoader dex_file_loader;
+        std::string error_msg;
+        std::vector<std::unique_ptr<const art_lkchan::DexFile>> dex_files;
+        if (!dex_file_loader.OpenAll(reinterpret_cast<const uint8_t *>(buffer),
+                                     size,
+                                     "",
+                                     kVerify,
+                                     kVerifyChecksum,
+                                     &error_msg,
+                                     &dex_files)) {
+            // Display returned error message to user. Note that this error behavior
+            // differs from the error messages shown by the original Dalvik dexdump.
+            ALOGE("Open dex error %s", error_msg.c_str());
+            return;
+        }
+
+        if (fix) {
+            fixCodeItem(env, dex_files[0].get(), begin);
+        }
+        char path[1024];
+        sprintf(path, "%s/dex_%d.dex", dirC, size);
+        auto fd = open(path, O_CREAT | O_WRONLY, 0600);
+        ssize_t w = write(fd, buffer, size);
+        fsync(fd);
+        if (w > 0) {
+            ALOGE("dump dex ======> %s", path);
+        } else {
+            remove(path);
+        }
+        close(fd);
+        free(buffer);
+        env->ReleaseStringUTFChars(dir, dirC);
+    }
+}

Bcore/src/main/cpp/DexDump.h

@@ -12,7 +12,7 @@
 
 class DexDump {
 public:
-    static void dumpDex(JNIEnv *env, jlong cookie, jstring dir);
+    static void dumpDex(JNIEnv *env, jlong cookie, jstring dir, jboolean fix);
 };
 
 

Bcore/src/main/cpp/IO.cpp

@@ -3,7 +3,7 @@
 //
 
 #include "IO.h"
-#include "Log.h"
+#include "utils/Log.h"
 
 jmethodID getAbsolutePathMethodId;
 

Bcore/src/main/cpp/VmCore.cpp

@@ -3,16 +3,17 @@
 //
 
 #include "VmCore.h"
-#include "Log.h"
+#include "utils/Log.h"
 #include "IO.h"
 #include <jni.h>
-#include <JniHook/JniHook.h>
-#include <Hook/VMClassLoaderHook.h>
-#include <Hook/UnixFileSystemHook.h>
-#include <Hook/BinderHook.h>
-#include <Hook/RuntimeHook.h>
+#include <jniHook/JniHook.h>
+#include <jniHook/ArtM.h>
+#include <hook/ProcessHook.h>
+#include <hook/VMClassLoaderHook.h>
+#include <hook/UnixFileSystemHook.h>
 #include "DexDump.h"
 #include "Utils/HexDump.h"
+#import "xhook/xhook.h"
 
 struct {
     JavaVM *vm;
@@ -22,9 +23,63 @@ struct {
     jmethodID redirectPathFile;
     jmethodID loadEmptyDex;
     jmethodID loadEmptyDexL;
+    jmethodID findMethod;
     int api_level;
 } VMEnv;
 
+bool is_str_utf8(const char* str)
+{
+    unsigned int nBytes = 0;//UFT8可用1-6个字节编码,ASCII用一个字节
+    unsigned char chr = *str;
+    bool bAllAscii = true;
+    for (unsigned int i = 0; str[i] != '\0'; ++i){
+        chr = *(str + i);
+        //判断是否ASCII编码,如果不是,说明有可能是UTF8,ASCII用7位编码,最高位标记为0,0xxxxxxx
+        if (nBytes == 0 && (chr & 0x80) != 0){
+            bAllAscii = false;
+        }
+        if (nBytes == 0) {
+            //如果不是ASCII码,应该是多字节符,计算字节数
+            if (chr >= 0x80) {
+                if (chr >= 0xFC && chr <= 0xFD){
+                    nBytes = 6;
+                }
+                else if (chr >= 0xF8){
+                    nBytes = 5;
+                }
+                else if (chr >= 0xF0){
+                    nBytes = 4;
+                }
+                else if (chr >= 0xE0){
+                    nBytes = 3;
+                }
+                else if (chr >= 0xC0){
+                    nBytes = 2;
+                }
+                else{
+                    return false;
+                }
+                nBytes--;
+            }
+        }
+        else{
+            //多字节符的非首字节,应为 10xxxxxx
+            if ((chr & 0xC0) != 0x80){
+                return false;
+            }
+            //减到为零为止
+            nBytes--;
+        }
+    }
+    //违返UTF8编码规则
+    if (nBytes != 0) {
+        return false;
+    }
+    if (bAllAscii){ //如果全部都是ASCII, 也是UTF8
+        return true;
+    }
+    return true;
+}
 
 JNIEnv *getEnv() {
     JNIEnv *env;
@@ -45,6 +100,24 @@ int VmCore::getCallingUid(JNIEnv *env, int orig) {
     return env->CallStaticIntMethod(VMEnv.VMCoreClass, VMEnv.getCallingUidId, orig);
 }
 
+jobject VmCore::findMethod(JNIEnv *env, const char *className, const char *methodName,
+                           const char *signature) {
+    try {
+        if (!is_str_utf8(className) || !is_str_utf8(methodName) || !is_str_utf8(methodName)) {
+            return nullptr;
+        }
+        auto clazz = (jclass) env->CallStaticObjectMethod(VMEnv.VMCoreClass, VMEnv.findMethod,
+                                                          env->NewStringUTF(className),
+                                                          env->NewStringUTF(methodName),
+                                                          env->NewStringUTF(signature));
+        env->ExceptionClear();
+        return clazz;
+    } catch (const char* &e) {
+        ALOGE("catch findMethod %s", e);
+        return nullptr;
+    }
+}
+
 jstring VmCore::redirectPathString(JNIEnv *env, jstring path) {
     env = ensureEnvCreated();
     return (jstring) env->CallStaticObjectMethod(VMEnv.VMCoreClass, VMEnv.redirectPathString, path);
@@ -72,8 +145,7 @@ void nativeHook(JNIEnv *env) {
     BaseHook::init(env);
     UnixFileSystemHook::init(env);
     VMClassLoaderHook::init(env);
-//    RuntimeHook::init(env);
-//    BinderHook::init(env);
+    ProcessHook::init(env);
 }
 
 void hideXposed(JNIEnv *env, jclass clazz) {
@@ -92,7 +164,10 @@ void init(JNIEnv *env, jobject clazz, jint api_level) {
                                                     "(Ljava/io/File;)Ljava/io/File;");
     VMEnv.loadEmptyDex = env->GetStaticMethodID(VMEnv.VMCoreClass, "loadEmptyDex",
                                                 "()[J");
+    VMEnv.findMethod = env->GetStaticMethodID(VMEnv.VMCoreClass, "findMethod",
+                                              "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;");
 
+    ArtM::InitArtMethod(env, api_level);
     JniHook::InitJniHook(env, api_level);
 }
 
@@ -107,8 +182,8 @@ void enableIO(JNIEnv *env, jclass clazz) {
     nativeHook(env);
 }
 
-void dumpDex(JNIEnv *env, jclass clazz, jlong cookie, jstring dir) {
-    DexDump::dumpDex(env, cookie, dir);
+void dumpDex(JNIEnv *env, jclass clazz, jlong cookie, jstring dir, jboolean fixCodeItem) {
+    DexDump::dumpDex(env, cookie, dir, fixCodeItem);
 }
 
 static JNINativeMethod gMethods[] = {
@@ -116,7 +191,7 @@ static JNINativeMethod gMethods[] = {
         {"addIORule",  "(Ljava/lang/String;Ljava/lang/String;)V", (void *) addIORule},
         {"enableIO",   "()V",                                     (void *) enableIO},
         {"init",       "(I)V",                                    (void *) init},
-        {"dumpDex",    "(JLjava/lang/String;)V",                  (void *) dumpDex},
+        {"dumpDex",    "(JLjava/lang/String;Z)V",                 (void *) dumpDex},
 };
 
 int registerNativeMethods(JNIEnv *env, const char *className,

Bcore/src/main/cpp/VmCore.h

@@ -13,6 +13,7 @@ class VmCore {
 public:
     static JavaVM *getJavaVM();
     static int getApiLevel();
+    static jobject findMethod(JNIEnv *env, const char *className, const char *methodName, const char *signature);
     static int getCallingUid(JNIEnv *env, int orig);
     static jstring redirectPathString(JNIEnv *env, jstring path);
     static jobject redirectPathFile(JNIEnv *env, jobject path);

Bcore/src/main/cpp/android-base/file.cpp

@@ -0,0 +1,345 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/file.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <memory>
+#include <mutex>
+#include <string>
+#include <vector>
+
+#include "android-base/logging.h"
+#include "android-base/macros.h"  // For TEMP_FAILURE_RETRY on Darwin.
+#include "android-base/unique_fd.h"
+#include "android-base/utf8.h"
+
+#if defined(__APPLE__)
+#include <mach-o/dyld.h>
+#endif
+#if defined(_WIN32)
+#include <windows.h>
+#define O_CLOEXEC O_NOINHERIT
+#define O_NOFOLLOW 0
+#endif
+
+namespace android_lkchan {
+namespace base {
+
+// Versions of standard library APIs that support UTF-8 strings.
+using namespace android_lkchan::base::utf8;
+
+bool ReadFdToString(int fd, std::string* content) {
+  content->clear();
+
+  // Although original we had small files in mind, this code gets used for
+  // very large files too, where the std::string growth heuristics might not
+  // be suitable. https://code.google.com/p/android/issues/detail?id=258500.
+  struct stat sb;
+  if (fstat(fd, &sb) != -1 && sb.st_size > 0) {
+    content->reserve(sb.st_size);
+  }
+
+  char buf[BUFSIZ];
+  ssize_t n;
+  while ((n = TEMP_FAILURE_RETRY(read(fd, &buf[0], sizeof(buf)))) > 0) {
+    content->append(buf, n);
+  }
+  return (n == 0) ? true : false;
+}
+
+bool ReadFileToString(const std::string& path, std::string* content, bool follow_symlinks) {
+  content->clear();
+
+  int flags = O_RDONLY | O_CLOEXEC | O_BINARY | (follow_symlinks ? 0 : O_NOFOLLOW);
+  android_lkchan::base::unique_fd fd(TEMP_FAILURE_RETRY(open(path.c_str(), flags)));
+  if (fd == -1) {
+    return false;
+  }
+  return ReadFdToString(fd, content);
+}
+
+bool WriteStringToFd(const std::string& content, int fd) {
+  const char* p = content.data();
+  size_t left = content.size();
+  while (left > 0) {
+    ssize_t n = TEMP_FAILURE_RETRY(write(fd, p, left));
+    if (n == -1) {
+      return false;
+    }
+    p += n;
+    left -= n;
+  }
+  return true;
+}
+
+static bool CleanUpAfterFailedWrite(const std::string& path) {
+  // Something went wrong. Let's not leave a corrupt file lying around.
+  int saved_errno = errno;
+  unlink(path.c_str());
+  errno = saved_errno;
+  return false;
+}
+
+#if !defined(_WIN32)
+bool WriteStringToFile(const std::string& content, const std::string& path,
+                       mode_t mode, uid_t owner, gid_t group,
+                       bool follow_symlinks) {
+  int flags = O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_BINARY |
+              (follow_symlinks ? 0 : O_NOFOLLOW);
+  android_lkchan::base::unique_fd fd(TEMP_FAILURE_RETRY(open(path.c_str(), flags, mode)));
+  if (fd == -1) {
+    PLOG(ERROR) << "android_lkchan::WriteStringToFile open failed";
+    return false;
+  }
+
+  // We do an explicit fchmod here because we assume that the caller really
+  // meant what they said and doesn't want the umask-influenced mode.
+  if (fchmod(fd, mode) == -1) {
+    PLOG(ERROR) << "android_lkchan::WriteStringToFile fchmod failed";
+    return CleanUpAfterFailedWrite(path);
+  }
+  if (fchown(fd, owner, group) == -1) {
+    PLOG(ERROR) << "android_lkchan::WriteStringToFile fchown failed";
+    return CleanUpAfterFailedWrite(path);
+  }
+  if (!WriteStringToFd(content, fd)) {
+    PLOG(ERROR) << "android_lkchan::WriteStringToFile write failed";
+    return CleanUpAfterFailedWrite(path);
+  }
+  return true;
+}
+#endif
+
+bool WriteStringToFile(const std::string& content, const std::string& path,
+                       bool follow_symlinks) {
+  int flags = O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_BINARY |
+              (follow_symlinks ? 0 : O_NOFOLLOW);
+  android_lkchan::base::unique_fd fd(TEMP_FAILURE_RETRY(open(path.c_str(), flags, 0666)));
+  if (fd == -1) {
+    return false;
+  }
+  return WriteStringToFd(content, fd) || CleanUpAfterFailedWrite(path);
+}
+
+bool ReadFully(int fd, void* data, size_t byte_count) {
+  uint8_t* p = reinterpret_cast<uint8_t*>(data);
+  size_t remaining = byte_count;
+  while (remaining > 0) {
+    ssize_t n = TEMP_FAILURE_RETRY(read(fd, p, remaining));
+    if (n <= 0) return false;
+    p += n;
+    remaining -= n;
+  }
+  return true;
+}
+
+#if defined(_WIN32)
+// Windows implementation of pread. Note that this DOES move the file descriptors read position,
+// but it does so atomically.
+static ssize_t pread(int fd, void* data, size_t byte_count, off64_t offset) {
+  DWORD bytes_read;
+  OVERLAPPED overlapped;
+  memset(&overlapped, 0, sizeof(OVERLAPPED));
+  overlapped.Offset = static_cast<DWORD>(offset);
+  overlapped.OffsetHigh = static_cast<DWORD>(offset >> 32);
+  if (!ReadFile(reinterpret_cast<HANDLE>(_get_osfhandle(fd)), data, static_cast<DWORD>(byte_count),
+                &bytes_read, &overlapped)) {
+    // In case someone tries to read errno (since this is masquerading as a POSIX call)
+    errno = EIO;
+    return -1;
+  }
+  return static_cast<ssize_t>(bytes_read);
+}
+#endif
+
+bool ReadFullyAtOffset(int fd, void* data, size_t byte_count, off64_t offset) {
+  uint8_t* p = reinterpret_cast<uint8_t*>(data);
+  while (byte_count > 0) {
+    ssize_t n = TEMP_FAILURE_RETRY(pread(fd, p, byte_count, offset));
+    if (n <= 0) return false;
+    p += n;
+    byte_count -= n;
+    offset += n;
+  }
+  return true;
+}
+
+bool WriteFully(int fd, const void* data, size_t byte_count) {
+  const uint8_t* p = reinterpret_cast<const uint8_t*>(data);
+  size_t remaining = byte_count;
+  while (remaining > 0) {
+    ssize_t n = TEMP_FAILURE_RETRY(write(fd, p, remaining));
+    if (n == -1) return false;
+    p += n;
+    remaining -= n;
+  }
+  return true;
+}
+
+bool RemoveFileIfExists(const std::string& path, std::string* err) {
+  struct stat st;
+#if defined(_WIN32)
+  //TODO: Windows version can't handle symbol link correctly.
+  int result = stat(path.c_str(), &st);
+  bool file_type_removable = (result == 0 && S_ISREG(st.st_mode));
+#else
+  int result = lstat(path.c_str(), &st);
+  bool file_type_removable = (result == 0 && (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)));
+#endif
+  if (result == 0) {
+    if (!file_type_removable) {
+      if (err != nullptr) {
+        *err = "is not a regular or symbol link file";
+      }
+      return false;
+    }
+    if (unlink(path.c_str()) == -1) {
+      if (err != nullptr) {
+        *err = strerror(errno);
+      }
+      return false;
+    }
+  }
+  return true;
+}
+
+#if !defined(_WIN32)
+bool Readlink(const std::string& path, std::string* result) {
+  result->clear();
+
+  // Most Linux file systems (ext2 and ext4, say) limit symbolic links to
+  // 4095 bytes. Since we'll copy out into the string anyway, it doesn't
+  // waste memory to just start there. We add 1 so that we can recognize
+  // whether it actually fit (rather than being truncated to 4095).
+  std::vector<char> buf(4095 + 1);
+  while (true) {
+    ssize_t size = readlink(path.c_str(), &buf[0], buf.size());
+    // Unrecoverable error?
+    if (size == -1) return false;
+    // It fit! (If size == buf.size(), it may have been truncated.)
+    if (static_cast<size_t>(size) < buf.size()) {
+      result->assign(&buf[0], size);
+      return true;
+    }
+    // Double our buffer and try again.
+    buf.resize(buf.size() * 2);
+  }
+}
+#endif
+
+#if !defined(_WIN32)
+bool Realpath(const std::string& path, std::string* result) {
+  result->clear();
+
+  char* realpath_buf = realpath(path.c_str(), nullptr);
+  if (realpath_buf == nullptr) {
+    return false;
+  }
+  result->assign(realpath_buf);
+  free(realpath_buf);
+  return true;
+}
+#endif
+
+std::string GetExecutablePath() {
+#if defined(__linux__)
+  std::string path;
+  android_lkchan::base::Readlink("/proc/self/exe", &path);
+  return path;
+#elif defined(__APPLE__)
+  char path[PATH_MAX + 1];
+  uint32_t path_len = sizeof(path);
+  int rc = _NSGetExecutablePath(path, &path_len);
+  if (rc < 0) {
+    std::unique_ptr<char> path_buf(new char[path_len]);
+    _NSGetExecutablePath(path_buf.get(), &path_len);
+    return path_buf.get();
+  }
+  return path;
+#elif defined(_WIN32)
+  char path[PATH_MAX + 1];
+  DWORD result = GetModuleFileName(NULL, path, sizeof(path) - 1);
+  if (result == 0 || result == sizeof(path) - 1) return "";
+  path[PATH_MAX - 1] = 0;
+  return path;
+#else
+#error unknown OS
+#endif
+}
+
+std::string GetExecutableDirectory() {
+  return Dirname(GetExecutablePath());
+}
+
+std::string Basename(const std::string& path) {
+  // Copy path because basename may modify the string passed in.
+  std::string result(path);
+
+#if !defined(__BIONIC__)
+  // Use lock because basename() may write to a process global and return a
+  // pointer to that. Note that this locking strategy only works if all other
+  // callers to basename in the process also grab this same lock, but its
+  // better than nothing.  Bionic's basename returns a thread-local buffer.
+  static std::mutex& basename_lock = *new std::mutex();
+  std::lock_guard<std::mutex> lock(basename_lock);
+#endif
+
+  // Note that if std::string uses copy-on-write strings, &str[0] will cause
+  // the copy to be made, so there is no chance of us accidentally writing to
+  // the storage for 'path'.
+  char* name = basename(&result[0]);
+
+  // In case basename returned a pointer to a process global, copy that string
+  // before leaving the lock.
+  result.assign(name);
+
+  return result;
+}
+
+std::string Dirname(const std::string& path) {
+  // Copy path because dirname may modify the string passed in.
+  std::string result(path);
+
+#if !defined(__BIONIC__)
+  // Use lock because dirname() may write to a process global and return a
+  // pointer to that. Note that this locking strategy only works if all other
+  // callers to dirname in the process also grab this same lock, but its
+  // better than nothing.  Bionic's dirname returns a thread-local buffer.
+  static std::mutex& dirname_lock = *new std::mutex();
+  std::lock_guard<std::mutex> lock(dirname_lock);
+#endif
+
+  // Note that if std::string uses copy-on-write strings, &str[0] will cause
+  // the copy to be made, so there is no chance of us accidentally writing to
+  // the storage for 'path'.
+  char* parent = dirname(&result[0]);
+
+  // In case dirname returned a pointer to a process global, copy that string
+  // before leaving the lock.
+  result.assign(parent);
+
+  return result;
+}
+
+}  // namespace base
+}  // namespace android_lkchan

Bcore/src/main/cpp/android-base/file.h

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_FILE_H
+#define ANDROID_BASE_FILE_H
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <string>
+
+#if !defined(_WIN32) && !defined(O_BINARY)
+#define O_BINARY 0
+#endif
+
+#if defined(__APPLE__)
+/* Mac OS has always had a 64-bit off_t, so it doesn't have off64_t. */
+typedef off_t off64_t;
+#endif
+
+namespace android_lkchan {
+namespace base {
+
+bool ReadFdToString(int fd, std::string* content);
+bool ReadFileToString(const std::string& path, std::string* content,
+                      bool follow_symlinks = false);
+
+bool WriteStringToFile(const std::string& content, const std::string& path,
+                       bool follow_symlinks = false);
+bool WriteStringToFd(const std::string& content, int fd);
+
+#if !defined(_WIN32)
+bool WriteStringToFile(const std::string& content, const std::string& path,
+                       mode_t mode, uid_t owner, gid_t group,
+                       bool follow_symlinks = false);
+#endif
+
+bool ReadFully(int fd, void* data, size_t byte_count);
+
+// Reads `byte_count` bytes from the file descriptor at the specified offset.
+// Returns false if there was an IO error or EOF was reached before reading `byte_count` bytes.
+//
+// NOTE: On Linux/Mac, this function wraps pread, which provides atomic read support without
+// modifying the read pointer of the file descriptor. On Windows, however, the read pointer does
+// get modified. This means that ReadFullyAtOffset can be used concurrently with other calls to the
+// same function, but concurrently seeking or reading incrementally can lead to unexpected
+// behavior.
+bool ReadFullyAtOffset(int fd, void* data, size_t byte_count, off64_t offset);
+
+bool WriteFully(int fd, const void* data, size_t byte_count);
+
+bool RemoveFileIfExists(const std::string& path, std::string* err = nullptr);
+
+#if !defined(_WIN32)
+bool Realpath(const std::string& path, std::string* result);
+bool Readlink(const std::string& path, std::string* result);
+#endif
+
+std::string GetExecutablePath();
+std::string GetExecutableDirectory();
+
+// Like the regular basename and dirname, but thread-safe on all
+// platforms and capable of correctly handling exotic Windows paths.
+std::string Basename(const std::string& path);
+std::string Dirname(const std::string& path);
+
+}  // namespace base
+}  // namespace android_lkchan
+
+#endif // ANDROID_BASE_FILE_H

Bcore/src/main/cpp/android-base/logging.cpp

@@ -0,0 +1,503 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if defined(_WIN32)
+#include <windows.h>
+#endif
+
+#include "android-base/logging.h"
+
+#include <fcntl.h>
+#include <libgen.h>
+#include <time.h>
+
+// For getprogname(3) or program_invocation_short_name.
+#if defined(__ANDROID__) || defined(__APPLE__)
+#include <stdlib.h>
+#elif defined(__GLIBC__)
+#include <errno.h>
+#endif
+
+#if defined(__linux__)
+#include <sys/uio.h>
+#endif
+
+#include <iostream>
+#include <limits>
+#include <mutex>
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+
+// Headers for LogMessage::LogLine.
+#ifdef __ANDROID__
+#include <android/log.h>
+#include <android/set_abort_message.h>
+#else
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#include <android-base/macros.h>
+#include <android-base/strings.h>
+
+// For gettid.
+#if defined(__APPLE__)
+#include "AvailabilityMacros.h"  // For MAC_OS_X_VERSION_MAX_ALLOWED
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <unistd.h>
+#elif defined(__linux__) && !defined(__ANDROID__)
+#include <syscall.h>
+#include <unistd.h>
+#elif defined(_WIN32)
+#include <windows.h>
+#endif
+
+#if defined(_WIN32)
+typedef uint32_t thread_id;
+#else
+typedef pid_t thread_id;
+#endif
+
+static thread_id GetThreadId() {
+#if defined(__BIONIC__)
+  return gettid();
+#elif defined(__APPLE__)
+  uint64_t tid;
+  pthread_threadid_np(NULL, &tid);
+  return tid;
+#elif defined(__linux__)
+  return syscall(__NR_gettid);
+#elif defined(_WIN32)
+  return GetCurrentThreadId();
+#endif
+}
+
+namespace {
+#if defined(__GLIBC__)
+const char* getprogname() {
+  return program_invocation_short_name;
+}
+#elif defined(_WIN32)
+const char* getprogname() {
+  static bool first = true;
+  static char progname[MAX_PATH] = {};
+
+  if (first) {
+    CHAR longname[MAX_PATH];
+    DWORD nchars = GetModuleFileNameA(nullptr, longname, arraysize(longname));
+    if ((nchars >= arraysize(longname)) || (nchars == 0)) {
+      // String truncation or some other error.
+      strcpy(progname, "<unknown>");
+    } else {
+      strcpy(progname, basename(longname));
+    }
+    first = false;
+  }
+
+  return progname;
+}
+#endif
+} // namespace
+
+namespace android_lkchan {
+namespace base {
+
+static std::mutex& LoggingLock() {
+  static auto& logging_lock = *new std::mutex();
+  return logging_lock;
+}
+
+static LogFunction& Logger() {
+#ifdef __ANDROID__
+  static auto& logger = *new LogFunction(LogdLogger());
+#else
+  static auto& logger = *new LogFunction(StderrLogger);
+#endif
+  return logger;
+}
+
+static AbortFunction& Aborter() {
+  static auto& aborter = *new AbortFunction(DefaultAborter);
+  return aborter;
+}
+
+static std::recursive_mutex& TagLock() {
+  static auto& tag_lock = *new std::recursive_mutex();
+  return tag_lock;
+}
+static std::string* gDefaultTag;
+std::string GetDefaultTag() {
+  std::lock_guard<std::recursive_mutex> lock(TagLock());
+  if (gDefaultTag == nullptr) {
+    return "";
+  }
+  return *gDefaultTag;
+}
+void SetDefaultTag(const std::string& tag) {
+  std::lock_guard<std::recursive_mutex> lock(TagLock());
+  if (gDefaultTag != nullptr) {
+    delete gDefaultTag;
+    gDefaultTag = nullptr;
+  }
+  if (!tag.empty()) {
+    gDefaultTag = new std::string(tag);
+  }
+}
+
+static bool gInitialized = false;
+static LogSeverity gMinimumLogSeverity = INFO;
+
+#if defined(__linux__)
+void KernelLogger(android_lkchan::base::LogId, android_lkchan::base::LogSeverity severity,
+                  const char* tag, const char*, unsigned int, const char* msg) {
+  // clang-format off
+  static constexpr int kLogSeverityToKernelLogLevel[] = {
+      [android_lkchan::base::VERBOSE] = 7,              // KERN_DEBUG (there is no verbose kernel log
+                                                 //             level)
+      [android_lkchan::base::DEBUG] = 7,                // KERN_DEBUG
+      [android_lkchan::base::INFO] = 6,                 // KERN_INFO
+      [android_lkchan::base::WARNING] = 4,              // KERN_WARNING
+      [android_lkchan::base::ERROR] = 3,                // KERN_ERROR
+      [android_lkchan::base::FATAL_WITHOUT_ABORT] = 2,  // KERN_CRIT
+      [android_lkchan::base::FATAL] = 2,                // KERN_CRIT
+  };
+  // clang-format on
+  static_assert(arraysize(kLogSeverityToKernelLogLevel) == android_lkchan::base::FATAL + 1,
+                "Mismatch in size of kLogSeverityToKernelLogLevel and values in LogSeverity");
+
+  static int klog_fd = TEMP_FAILURE_RETRY(open("/dev/kmsg", O_WRONLY | O_CLOEXEC));
+  if (klog_fd == -1) return;
+
+  int level = kLogSeverityToKernelLogLevel[severity];
+
+  // The kernel's printk buffer is only 1024 bytes.
+  // TODO: should we automatically break up long lines into multiple lines?
+  // Or we could log but with something like "..." at the end?
+  char buf[1024];
+  size_t size = snprintf(buf, sizeof(buf), "<%d>%s: %s\n", level, tag, msg);
+  if (size > sizeof(buf)) {
+    size = snprintf(buf, sizeof(buf), "<%d>%s: %zu-byte message too long for printk\n",
+                    level, tag, size);
+  }
+
+  iovec iov[1];
+  iov[0].iov_base = buf;
+  iov[0].iov_len = size;
+  TEMP_FAILURE_RETRY(writev(klog_fd, iov, 1));
+}
+#endif
+
+void StderrLogger(LogId, LogSeverity severity, const char* tag, const char* file, unsigned int line,
+                  const char* message) {
+  struct tm now;
+  time_t t = time(nullptr);
+
+#if defined(_WIN32)
+  localtime_s(&now, &t);
+#else
+  localtime_r(&t, &now);
+#endif
+
+  char timestamp[32];
+  strftime(timestamp, sizeof(timestamp), "%m-%d %H:%M:%S", &now);
+
+  static const char log_characters[] = "VDIWEFF";
+  static_assert(arraysize(log_characters) - 1 == FATAL + 1,
+                "Mismatch in size of log_characters and values in LogSeverity");
+  char severity_char = log_characters[severity];
+  fprintf(stderr, "%s %c %s %5d %5d %s:%u] %s\n", tag ? tag : "nullptr", severity_char, timestamp,
+          getpid(), GetThreadId(), file, line, message);
+}
+
+void DefaultAborter(const char* abort_message) {
+#ifdef __ANDROID__
+  android_set_abort_message(abort_message);
+#else
+  UNUSED(abort_message);
+#endif
+  abort();
+}
+
+
+#ifdef __ANDROID__
+LogdLogger::LogdLogger(LogId default_log_id) : default_log_id_(default_log_id) {
+}
+
+void LogdLogger::operator()(LogId id, LogSeverity severity, const char* tag,
+                            const char* file, unsigned int line,
+                            const char* message) {
+  static constexpr android_LogPriority kLogSeverityToAndroidLogPriority[] = {
+      ANDROID_LOG_VERBOSE, ANDROID_LOG_DEBUG, ANDROID_LOG_INFO,
+      ANDROID_LOG_WARN,    ANDROID_LOG_ERROR, ANDROID_LOG_FATAL,
+      ANDROID_LOG_FATAL,
+  };
+  static_assert(arraysize(kLogSeverityToAndroidLogPriority) == FATAL + 1,
+                "Mismatch in size of kLogSeverityToAndroidLogPriority and values in LogSeverity");
+
+  int priority = kLogSeverityToAndroidLogPriority[severity];
+  if (id == DEFAULT) {
+    id = default_log_id_;
+  }
+
+  static constexpr log_id kLogIdToAndroidLogId[] = {
+    LOG_ID_MAX, LOG_ID_MAIN, LOG_ID_SYSTEM,
+  };
+  static_assert(arraysize(kLogIdToAndroidLogId) == SYSTEM + 1,
+                "Mismatch in size of kLogIdToAndroidLogId and values in LogId");
+  log_id lg_id = kLogIdToAndroidLogId[id];
+
+  if (priority == ANDROID_LOG_FATAL) {
+    __android_log_buf_print(lg_id, priority, tag, "%s:%u] %s", file, line,
+                            message);
+  } else {
+    __android_log_buf_print(lg_id, priority, tag, "%s", message);
+  }
+}
+#endif
+
+void InitLogging(char* argv[], LogFunction&& logger, AbortFunction&& aborter) {
+  SetLogger(std::forward<LogFunction>(logger));
+  SetAborter(std::forward<AbortFunction>(aborter));
+
+  if (gInitialized) {
+    return;
+  }
+
+  gInitialized = true;
+
+  // Stash the command line for later use. We can use /proc/self/cmdline on
+  // Linux to recover this, but we don't have that luxury on the Mac/Windows,
+  // and there are a couple of argv[0] variants that are commonly used.
+  if (argv != nullptr) {
+    SetDefaultTag(basename(argv[0]));
+  }
+
+  const char* tags = getenv("ANDROID_LOG_TAGS");
+  if (tags == nullptr) {
+    return;
+  }
+
+  std::vector<std::string> specs = Split(tags, " ");
+  for (size_t i = 0; i < specs.size(); ++i) {
+    // "tag-pattern:[vdiwefs]"
+    std::string spec(specs[i]);
+    if (spec.size() == 3 && StartsWith(spec, "*:")) {
+      switch (spec[2]) {
+        case 'v':
+          gMinimumLogSeverity = VERBOSE;
+          continue;
+        case 'd':
+          gMinimumLogSeverity = DEBUG;
+          continue;
+        case 'i':
+          gMinimumLogSeverity = INFO;
+          continue;
+        case 'w':
+          gMinimumLogSeverity = WARNING;
+          continue;
+        case 'e':
+          gMinimumLogSeverity = ERROR;
+          continue;
+        case 'f':
+          gMinimumLogSeverity = FATAL_WITHOUT_ABORT;
+          continue;
+        // liblog will even suppress FATAL if you say 's' for silent, but that's
+        // crazy!
+        case 's':
+          gMinimumLogSeverity = FATAL_WITHOUT_ABORT;
+          continue;
+      }
+    }
+    LOG(FATAL) << "unsupported '" << spec << "' in ANDROID_LOG_TAGS (" << tags
+               << ")";
+  }
+}
+
+void SetLogger(LogFunction&& logger) {
+  std::lock_guard<std::mutex> lock(LoggingLock());
+  Logger() = std::move(logger);
+}
+
+void SetAborter(AbortFunction&& aborter) {
+  std::lock_guard<std::mutex> lock(LoggingLock());
+  Aborter() = std::move(aborter);
+}
+
+static const char* GetFileBasename(const char* file) {
+  // We can't use basename(3) even on Unix because the Mac doesn't
+  // have a non-modifying basename.
+  const char* last_slash = strrchr(file, '/');
+  if (last_slash != nullptr) {
+    return last_slash + 1;
+  }
+#if defined(_WIN32)
+  const char* last_backslash = strrchr(file, '\\');
+  if (last_backslash != nullptr) {
+    return last_backslash + 1;
+  }
+#endif
+  return file;
+}
+
+// This indirection greatly reduces the stack impact of having lots of
+// checks/logging in a function.
+class LogMessageData {
+ public:
+  LogMessageData(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                 const char* tag, int error)
+      : file_(GetFileBasename(file)),
+        line_number_(line),
+        id_(id),
+        severity_(severity),
+        tag_(tag),
+        error_(error) {}
+
+  const char* GetFile() const {
+    return file_;
+  }
+
+  unsigned int GetLineNumber() const {
+    return line_number_;
+  }
+
+  LogSeverity GetSeverity() const {
+    return severity_;
+  }
+
+  const char* GetTag() const { return tag_; }
+
+  LogId GetId() const {
+    return id_;
+  }
+
+  int GetError() const {
+    return error_;
+  }
+
+  std::ostream& GetBuffer() {
+    return buffer_;
+  }
+
+  std::string ToString() const {
+    return buffer_.str();
+  }
+
+ private:
+  std::ostringstream buffer_;
+  const char* const file_;
+  const unsigned int line_number_;
+  const LogId id_;
+  const LogSeverity severity_;
+  const char* const tag_;
+  const int error_;
+
+  DISALLOW_COPY_AND_ASSIGN(LogMessageData);
+};
+
+LogMessage::LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                       const char* tag, int error)
+    : data_(new LogMessageData(file, line, id, severity, tag, error)) {}
+
+LogMessage::LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                       int error)
+    : LogMessage(file, line, id, severity, nullptr, error) {}
+
+LogMessage::~LogMessage() {
+  // Check severity again. This is duplicate work wrt/ LOG macros, but not LOG_STREAM.
+  if (!WOULD_LOG(data_->GetSeverity())) {
+    return;
+  }
+
+  // Finish constructing the message.
+  if (data_->GetError() != -1) {
+    data_->GetBuffer() << ": " << strerror(data_->GetError());
+  }
+  std::string msg(data_->ToString());
+
+  {
+    // Do the actual logging with the lock held.
+    std::lock_guard<std::mutex> lock(LoggingLock());
+    if (msg.find('\n') == std::string::npos) {
+      LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(), data_->GetSeverity(),
+              data_->GetTag(), msg.c_str());
+    } else {
+      msg += '\n';
+      size_t i = 0;
+      while (i < msg.size()) {
+        size_t nl = msg.find('\n', i);
+        msg[nl] = '\0';
+        LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(), data_->GetSeverity(),
+                data_->GetTag(), &msg[i]);
+        // Undo the zero-termination so we can give the complete message to the aborter.
+        msg[nl] = '\n';
+        i = nl + 1;
+      }
+    }
+  }
+
+  // Abort if necessary.
+  if (data_->GetSeverity() == FATAL) {
+    Aborter()(msg.c_str());
+  }
+}
+
+std::ostream& LogMessage::stream() {
+  return data_->GetBuffer();
+}
+
+void LogMessage::LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                         const char* tag, const char* message) {
+  if (tag == nullptr) {
+    std::lock_guard<std::recursive_mutex> lock(TagLock());
+    if (gDefaultTag == nullptr) {
+      gDefaultTag = new std::string(getprogname());
+    }
+    Logger()(id, severity, gDefaultTag->c_str(), file, line, message);
+  } else {
+    Logger()(id, severity, tag, file, line, message);
+  }
+}
+
+void LogMessage::LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                         const char* message) {
+  LogLine(file, line, id, severity, nullptr, message);
+}
+
+LogSeverity GetMinimumLogSeverity() {
+    return gMinimumLogSeverity;
+}
+
+LogSeverity SetMinimumLogSeverity(LogSeverity new_severity) {
+  LogSeverity old_severity = gMinimumLogSeverity;
+  gMinimumLogSeverity = new_severity;
+  return old_severity;
+}
+
+ScopedLogSeverity::ScopedLogSeverity(LogSeverity new_severity) {
+  old_ = SetMinimumLogSeverity(new_severity);
+}
+
+ScopedLogSeverity::~ScopedLogSeverity() {
+  SetMinimumLogSeverity(old_);
+}
+
+}  // namespace base
+}  // namespace android_lkchan

Bcore/src/main/cpp/android-base/logging.h

@@ -0,0 +1,501 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_LOGGING_H
+#define ANDROID_BASE_LOGGING_H
+
+//
+// Google-style C++ logging.
+//
+
+// This header provides a C++ stream interface to logging.
+//
+// To log:
+//
+//   LOG(INFO) << "Some text; " << some_value;
+//
+// Replace `INFO` with any severity from `enum LogSeverity`.
+//
+// To log the result of a failed function and include the string
+// representation of `errno` at the end:
+//
+//   PLOG(ERROR) << "Write failed";
+//
+// The output will be something like `Write failed: I/O error`.
+// Remember this as 'P' as in perror(3).
+//
+// To output your own types, simply implement operator<< as normal.
+//
+// By default, output goes to logcat on Android and stderr on the host.
+// A process can use `SetLogger` to decide where all logging goes.
+// Implementations are provided for logcat, stderr, and dmesg.
+//
+// By default, the process' name is used as the log tag.
+// Code can choose a specific log tag by defining LOG_TAG
+// before including this header.
+
+// This header also provides assertions:
+//
+//   CHECK(must_be_true);
+//   CHECK_EQ(a, b) << z_is_interesting_too;
+
+// NOTE: For Windows, you must include logging.h after windows.h to allow the
+// following code to suppress the evil ERROR macro:
+#ifdef _WIN32
+// windows.h includes wingdi.h which defines an evil macro ERROR.
+#ifdef ERROR
+#undef ERROR
+#endif
+#endif
+
+#include <functional>
+#include <memory>
+#include <ostream>
+
+#include "android-base/macros.h"
+
+// Note: DO NOT USE DIRECTLY. Use LOG_TAG instead.
+#ifdef _LOG_TAG_INTERNAL
+#error "_LOG_TAG_INTERNAL must not be defined"
+#endif
+#ifdef LOG_TAG
+#define _LOG_TAG_INTERNAL LOG_TAG
+#else
+#define _LOG_TAG_INTERNAL nullptr
+#endif
+
+namespace android_lkchan {
+namespace base {
+
+enum LogSeverity {
+  VERBOSE,
+  DEBUG,
+  INFO,
+  WARNING,
+  ERROR,
+  FATAL_WITHOUT_ABORT,
+  FATAL,
+};
+
+enum LogId {
+  DEFAULT,
+  MAIN,
+  SYSTEM,
+};
+
+using LogFunction = std::function<void(LogId, LogSeverity, const char*, const char*,
+                                       unsigned int, const char*)>;
+using AbortFunction = std::function<void(const char*)>;
+
+void KernelLogger(LogId, LogSeverity, const char*, const char*, unsigned int, const char*);
+void StderrLogger(LogId, LogSeverity, const char*, const char*, unsigned int, const char*);
+
+void DefaultAborter(const char* abort_message);
+
+std::string GetDefaultTag();
+void SetDefaultTag(const std::string& tag);
+
+#ifdef __ANDROID__
+// We expose this even though it is the default because a user that wants to
+// override the default log buffer will have to construct this themselves.
+class LogdLogger {
+ public:
+  explicit LogdLogger(LogId default_log_id = android_lkchan::base::MAIN);
+
+  void operator()(LogId, LogSeverity, const char* tag, const char* file,
+                  unsigned int line, const char* message);
+
+ private:
+  LogId default_log_id_;
+};
+#endif
+
+// Configure logging based on ANDROID_LOG_TAGS environment variable.
+// We need to parse a string that looks like
+//
+//      *:v jdwp:d dalvikvm:d dalvikvm-gc:i dalvikvmi:i
+//
+// The tag (or '*' for the global level) comes first, followed by a colon and a
+// letter indicating the minimum priority level we're expected to log.  This can
+// be used to reveal or conceal logs with specific tags.
+#ifdef __ANDROID__
+#define INIT_LOGGING_DEFAULT_LOGGER LogdLogger()
+#else
+#define INIT_LOGGING_DEFAULT_LOGGER StderrLogger
+#endif
+void InitLogging(char* argv[],
+                 LogFunction&& logger = INIT_LOGGING_DEFAULT_LOGGER,
+                 AbortFunction&& aborter = DefaultAborter);
+#undef INIT_LOGGING_DEFAULT_LOGGER
+
+// Replace the current logger.
+void SetLogger(LogFunction&& logger);
+
+// Replace the current aborter.
+void SetAborter(AbortFunction&& aborter);
+
+class ErrnoRestorer {
+ public:
+  ErrnoRestorer()
+      : saved_errno_(errno) {
+  }
+
+  ~ErrnoRestorer() {
+    errno = saved_errno_;
+  }
+
+  // Allow this object to be used as part of && operation.
+  operator bool() const {
+    return true;
+  }
+
+ private:
+  const int saved_errno_;
+
+  DISALLOW_COPY_AND_ASSIGN(ErrnoRestorer);
+};
+
+// A helper macro that produces an expression that accepts both a qualified name and an
+// unqualified name for a LogSeverity, and returns a LogSeverity value.
+// Note: DO NOT USE DIRECTLY. This is an implementation detail.
+#define SEVERITY_LAMBDA(severity) ([&]() {    \
+  using ::android_lkchan::base::VERBOSE;             \
+  using ::android_lkchan::base::DEBUG;               \
+  using ::android_lkchan::base::INFO;                \
+  using ::android_lkchan::base::WARNING;             \
+  using ::android_lkchan::base::ERROR;               \
+  using ::android_lkchan::base::FATAL_WITHOUT_ABORT; \
+  using ::android_lkchan::base::FATAL;               \
+  return (severity); }())
+
+#ifdef __clang_analyzer__
+// Clang's static analyzer does not see the conditional statement inside
+// LogMessage's destructor that will abort on FATAL severity.
+#define ABORT_AFTER_LOG_FATAL for (;; abort())
+
+struct LogAbortAfterFullExpr {
+  ~LogAbortAfterFullExpr() __attribute__((noreturn)) { abort(); }
+  explicit operator bool() const { return false; }
+};
+// Provides an expression that evaluates to the truthiness of `x`, automatically
+// aborting if `c` is true.
+#define ABORT_AFTER_LOG_EXPR_IF(c, x) (((c) && ::android_lkchan::base::LogAbortAfterFullExpr()) || (x))
+// Note to the static analyzer that we always execute FATAL logs in practice.
+#define MUST_LOG_MESSAGE(severity) (SEVERITY_LAMBDA(severity) == ::android_lkchan::base::FATAL)
+#else
+#define ABORT_AFTER_LOG_FATAL
+#define ABORT_AFTER_LOG_EXPR_IF(c, x) (x)
+#define MUST_LOG_MESSAGE(severity) false
+#endif
+#define ABORT_AFTER_LOG_FATAL_EXPR(x) ABORT_AFTER_LOG_EXPR_IF(true, x)
+
+// Defines whether the given severity will be logged or silently swallowed.
+#define WOULD_LOG(severity) \
+  (UNLIKELY((SEVERITY_LAMBDA(severity)) >= ::android_lkchan::base::GetMinimumLogSeverity()) || \
+   MUST_LOG_MESSAGE(severity))
+
+// Get an ostream that can be used for logging at the given severity and to the default
+// destination.
+//
+// Notes:
+// 1) This will not check whether the severity is high enough. One should use WOULD_LOG to filter
+//    usage manually.
+// 2) This does not save and restore errno.
+#define LOG_STREAM(severity) LOG_STREAM_TO(DEFAULT, severity)
+
+// Get an ostream that can be used for logging at the given severity and to the
+// given destination. The same notes as for LOG_STREAM apply.
+#define LOG_STREAM_TO(dest, severity)                                           \
+  ::android_lkchan::base::LogMessage(__FILE__, __LINE__, ::android_lkchan::base::dest,        \
+                              SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, -1) \
+      .stream()
+
+// Logs a message to logcat on Android otherwise to stderr. If the severity is
+// FATAL it also causes an abort. For example:
+//
+//     LOG(FATAL) << "We didn't expect to reach here";
+#define LOG(severity) LOG_TO(DEFAULT, severity)
+
+// Checks if we want to log something, and sets up appropriate RAII objects if
+// so.
+// Note: DO NOT USE DIRECTLY. This is an implementation detail.
+#define LOGGING_PREAMBLE(severity)                                                         \
+  (WOULD_LOG(severity) &&                                                                  \
+   ABORT_AFTER_LOG_EXPR_IF((SEVERITY_LAMBDA(severity)) == ::android_lkchan::base::FATAL, true) && \
+   ::android_lkchan::base::ErrnoRestorer())
+
+// Logs a message to logcat with the specified log ID on Android otherwise to
+// stderr. If the severity is FATAL it also causes an abort.
+// Use an expression here so we can support the << operator following the macro,
+// like "LOG(DEBUG) << xxx;".
+#define LOG_TO(dest, severity) LOGGING_PREAMBLE(severity) && LOG_STREAM_TO(dest, severity)
+
+// A variant of LOG that also logs the current errno value. To be used when
+// library calls fail.
+#define PLOG(severity) PLOG_TO(DEFAULT, severity)
+
+// Behaves like PLOG, but logs to the specified log ID.
+#define PLOG_TO(dest, severity)                                                        \
+  LOGGING_PREAMBLE(severity) &&                                                        \
+      ::android_lkchan::base::LogMessage(__FILE__, __LINE__, ::android_lkchan::base::dest,           \
+                                  SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, errno) \
+          .stream()
+
+// Marker that code is yet to be implemented.
+#define UNIMPLEMENTED(level) \
+  LOG(level) << __PRETTY_FUNCTION__ << " unimplemented "
+
+// Check whether condition x holds and LOG(FATAL) if not. The value of the
+// expression x is only evaluated once. Extra logging can be appended using <<
+// after. For example:
+//
+//     CHECK(false == true) results in a log message of
+//       "Check failed: false == true".
+#define CHECK(x)                                                                 \
+  LIKELY((x)) || ABORT_AFTER_LOG_FATAL_EXPR(false) ||                            \
+      ::android_lkchan::base::LogMessage(__FILE__, __LINE__, ::android_lkchan::base::DEFAULT,  \
+                                  ::android_lkchan::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+              .stream()                                                          \
+          << "Check failed: " #x << " "
+
+// clang-format off
+// Helper for CHECK_xx(x,y) macros.
+#define CHECK_OP(LHS, RHS, OP)                                                                 \
+  for (auto _values = ::android_lkchan::base::MakeEagerEvaluator(LHS, RHS);                           \
+       UNLIKELY(!(_values.lhs OP _values.rhs));                                                \
+       /* empty */)                                                                            \
+  ABORT_AFTER_LOG_FATAL                                                                        \
+  ::android_lkchan::base::LogMessage(__FILE__, __LINE__, ::android_lkchan::base::DEFAULT,                    \
+                              ::android_lkchan::base::FATAL, _LOG_TAG_INTERNAL, -1)                   \
+          .stream()                                                                            \
+      << "Check failed: " << #LHS << " " << #OP << " " << #RHS << " (" #LHS "=" << _values.lhs \
+      << ", " #RHS "=" << _values.rhs << ") "
+// clang-format on
+
+// Check whether a condition holds between x and y, LOG(FATAL) if not. The value
+// of the expressions x and y is evaluated once. Extra logging can be appended
+// using << after. For example:
+//
+//     CHECK_NE(0 == 1, false) results in
+//       "Check failed: false != false (0==1=false, false=false) ".
+#define CHECK_EQ(x, y) CHECK_OP(x, y, == )
+#define CHECK_NE(x, y) CHECK_OP(x, y, != )
+#define CHECK_LE(x, y) CHECK_OP(x, y, <= )
+#define CHECK_LT(x, y) CHECK_OP(x, y, < )
+#define CHECK_GE(x, y) CHECK_OP(x, y, >= )
+#define CHECK_GT(x, y) CHECK_OP(x, y, > )
+
+// clang-format off
+// Helper for CHECK_STRxx(s1,s2) macros.
+#define CHECK_STROP(s1, s2, sense)                                             \
+  while (UNLIKELY((strcmp(s1, s2) == 0) != (sense)))                           \
+    ABORT_AFTER_LOG_FATAL                                                      \
+    ::android_lkchan::base::LogMessage(__FILE__, __LINE__, ::android_lkchan::base::DEFAULT,  \
+                                ::android_lkchan::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+        .stream()                                                              \
+        << "Check failed: " << "\"" << (s1) << "\""                            \
+        << ((sense) ? " == " : " != ") << "\"" << (s2) << "\""
+// clang-format on
+
+// Check for string (const char*) equality between s1 and s2, LOG(FATAL) if not.
+#define CHECK_STREQ(s1, s2) CHECK_STROP(s1, s2, true)
+#define CHECK_STRNE(s1, s2) CHECK_STROP(s1, s2, false)
+
+// Perform the pthread function call(args), LOG(FATAL) on error.
+#define CHECK_PTHREAD_CALL(call, args, what)                           \
+  do {                                                                 \
+    int rc = call args;                                                \
+    if (rc != 0) {                                                     \
+      errno = rc;                                                      \
+      ABORT_AFTER_LOG_FATAL                                            \
+      PLOG(FATAL) << #call << " failed for " << (what);                \
+    }                                                                  \
+  } while (false)
+
+// CHECK that can be used in a constexpr function. For example:
+//
+//    constexpr int half(int n) {
+//      return
+//          DCHECK_CONSTEXPR(n >= 0, , 0)
+//          CHECK_CONSTEXPR((n & 1) == 0),
+//              << "Extra debugging output: n = " << n, 0)
+//          n / 2;
+//    }
+#define CHECK_CONSTEXPR(x, out, dummy)                                     \
+  (UNLIKELY(!(x)))                                                         \
+      ? (LOG(FATAL) << "Check failed: " << #x out, dummy) \
+      :
+
+// DCHECKs are debug variants of CHECKs only enabled in debug builds. Generally
+// CHECK should be used unless profiling identifies a CHECK as being in
+// performance critical code.
+#if defined(NDEBUG) && !defined(__clang_analyzer__)
+static constexpr bool kEnableDChecks = false;
+#else
+static constexpr bool kEnableDChecks = true;
+#endif
+
+#define DCHECK(x) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK(x)
+#define DCHECK_EQ(x, y) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_EQ(x, y)
+#define DCHECK_NE(x, y) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_NE(x, y)
+#define DCHECK_LE(x, y) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_LE(x, y)
+#define DCHECK_LT(x, y) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_LT(x, y)
+#define DCHECK_GE(x, y) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_GE(x, y)
+#define DCHECK_GT(x, y) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_GT(x, y)
+#define DCHECK_STREQ(s1, s2) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_STREQ(s1, s2)
+#define DCHECK_STRNE(s1, s2) \
+  if (::android_lkchan::base::kEnableDChecks) CHECK_STRNE(s1, s2)
+#if defined(NDEBUG) && !defined(__clang_analyzer__)
+#define DCHECK_CONSTEXPR(x, out, dummy)
+#else
+#define DCHECK_CONSTEXPR(x, out, dummy) CHECK_CONSTEXPR(x, out, dummy)
+#endif
+
+// Temporary class created to evaluate the LHS and RHS, used with
+// MakeEagerEvaluator to infer the types of LHS and RHS.
+template <typename LHS, typename RHS>
+struct EagerEvaluator {
+  constexpr EagerEvaluator(LHS l, RHS r) : lhs(l), rhs(r) {
+  }
+  LHS lhs;
+  RHS rhs;
+};
+
+// Helper function for CHECK_xx.
+template <typename LHS, typename RHS>
+constexpr EagerEvaluator<LHS, RHS> MakeEagerEvaluator(LHS lhs, RHS rhs) {
+  return EagerEvaluator<LHS, RHS>(lhs, rhs);
+}
+
+// Explicitly instantiate EagerEvalue for pointers so that char*s aren't treated
+// as strings. To compare strings use CHECK_STREQ and CHECK_STRNE. We rely on
+// signed/unsigned warnings to protect you against combinations not explicitly
+// listed below.
+#define EAGER_PTR_EVALUATOR(T1, T2)               \
+  template <>                                     \
+  struct EagerEvaluator<T1, T2> {                 \
+    EagerEvaluator(T1 l, T2 r)                    \
+        : lhs(reinterpret_cast<const void*>(l)),  \
+          rhs(reinterpret_cast<const void*>(r)) { \
+    }                                             \
+    const void* lhs;                              \
+    const void* rhs;                              \
+  }
+EAGER_PTR_EVALUATOR(const char*, const char*);
+EAGER_PTR_EVALUATOR(const char*, char*);
+EAGER_PTR_EVALUATOR(char*, const char*);
+EAGER_PTR_EVALUATOR(char*, char*);
+EAGER_PTR_EVALUATOR(const unsigned char*, const unsigned char*);
+EAGER_PTR_EVALUATOR(const unsigned char*, unsigned char*);
+EAGER_PTR_EVALUATOR(unsigned char*, const unsigned char*);
+EAGER_PTR_EVALUATOR(unsigned char*, unsigned char*);
+EAGER_PTR_EVALUATOR(const signed char*, const signed char*);
+EAGER_PTR_EVALUATOR(const signed char*, signed char*);
+EAGER_PTR_EVALUATOR(signed char*, const signed char*);
+EAGER_PTR_EVALUATOR(signed char*, signed char*);
+
+// Data for the log message, not stored in LogMessage to avoid increasing the
+// stack size.
+class LogMessageData;
+
+// A LogMessage is a temporarily scoped object used by LOG and the unlikely part
+// of a CHECK. The destructor will abort if the severity is FATAL.
+class LogMessage {
+ public:
+  LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity, const char* tag,
+             int error);
+
+  ~LogMessage();
+
+  // Returns the stream associated with the message, the LogMessage performs
+  // output when it goes out of scope.
+  std::ostream& stream();
+
+  // The routine that performs the actual logging.
+  static void LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                      const char* tag, const char* msg);
+
+ private:
+  const std::unique_ptr<LogMessageData> data_;
+
+  // TODO(b/35361699): remove these symbols once all prebuilds stop using it.
+  LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity, int error);
+  static void LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+                      const char* msg);
+
+  DISALLOW_COPY_AND_ASSIGN(LogMessage);
+};
+
+// Get the minimum severity level for logging.
+LogSeverity GetMinimumLogSeverity();
+
+// Set the minimum severity level for logging, returning the old severity.
+LogSeverity SetMinimumLogSeverity(LogSeverity new_severity);
+
+// Allows to temporarily change the minimum severity level for logging.
+class ScopedLogSeverity {
+ public:
+  explicit ScopedLogSeverity(LogSeverity level);
+  ~ScopedLogSeverity();
+
+ private:
+  LogSeverity old_;
+};
+
+}  // namespace base
+}  // namespace android_lkchan
+
+namespace std {
+
+// Emit a warning of ostream<< with std::string*. The intention was most likely to print *string.
+//
+// Note: for this to work, we need to have this in a namespace.
+// Note: lots of ifdef magic to make this work with Clang (platform) vs GCC (windows tools)
+// Note: using diagnose_if(true) under Clang and nothing under GCC/mingw as there is no common
+//       attribute support.
+// Note: using a pragma because "-Wgcc-compat" (included in "-Weverything") complains about
+//       diagnose_if.
+// Note: to print the pointer, use "<< static_cast<const void*>(string_pointer)" instead.
+// Note: a not-recommended alternative is to let Clang ignore the warning by adding
+//       -Wno-user-defined-warnings to CPPFLAGS.
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgcc-compat"
+#define OSTREAM_STRING_POINTER_USAGE_WARNING \
+    __attribute__((diagnose_if(true, "Unexpected logging of string pointer", "warning")))
+#else
+#define OSTREAM_STRING_POINTER_USAGE_WARNING /* empty */
+#endif
+inline std::ostream& operator<<(std::ostream& stream, const std::string* string_pointer)
+    OSTREAM_STRING_POINTER_USAGE_WARNING {
+  return stream << static_cast<const void*>(string_pointer);
+}
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+#undef OSTREAM_STRING_POINTER_USAGE_WARNING
+
+}  // namespace std
+
+#endif  // ANDROID_BASE_LOGGING_H

Bcore/src/main/cpp/android-base/macros.h

@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_MACROS_H
+#define ANDROID_BASE_MACROS_H
+
+#include <stddef.h>  // for size_t
+#include <unistd.h>  // for TEMP_FAILURE_RETRY
+
+// bionic and glibc both have TEMP_FAILURE_RETRY, but eg Mac OS' libc doesn't.
+#ifndef TEMP_FAILURE_RETRY
+#define TEMP_FAILURE_RETRY(exp)            \
+  ({                                       \
+    decltype(exp) _rc;                     \
+    do {                                   \
+      _rc = (exp);                         \
+    } while (_rc == -1 && errno == EINTR); \
+    _rc;                                   \
+  })
+#endif
+
+// A macro to disallow the copy constructor and operator= functions
+// This must be placed in the private: declarations for a class.
+//
+// For disallowing only assign or copy, delete the relevant operator or
+// constructor, for example:
+// void operator=(const TypeName&) = delete;
+// Note, that most uses of DISALLOW_ASSIGN and DISALLOW_COPY are broken
+// semantically, one should either use disallow both or neither. Try to
+// avoid these in new code.
+#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
+  TypeName(const TypeName&) = delete;      \
+  void operator=(const TypeName&) = delete
+
+// A macro to disallow all the implicit constructors, namely the
+// default constructor, copy constructor and operator= functions.
+//
+// This should be used in the private: declarations for a class
+// that wants to prevent anyone from instantiating it. This is
+// especially useful for classes containing only static methods.
+#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
+  TypeName() = delete;                           \
+  DISALLOW_COPY_AND_ASSIGN(TypeName)
+
+// The arraysize(arr) macro returns the # of elements in an array arr.
+// The expression is a compile-time constant, and therefore can be
+// used in defining new arrays, for example.  If you use arraysize on
+// a pointer by mistake, you will get a compile-time error.
+//
+// One caveat is that arraysize() doesn't accept any array of an
+// anonymous type or a type defined inside a function.  In these rare
+// cases, you have to use the unsafe ARRAYSIZE_UNSAFE() macro below.  This is
+// due to a limitation in C++'s template system.  The limitation might
+// eventually be removed, but it hasn't happened yet.
+
+// This template function declaration is used in defining arraysize.
+// Note that the function doesn't need an implementation, as we only
+// use its type.
+template <typename T, size_t N>
+char(&ArraySizeHelper(T(&array)[N]))[N];  // NOLINT(readability/casting)
+
+#define arraysize(array) (sizeof(ArraySizeHelper(array)))
+
+// ARRAYSIZE_UNSAFE performs essentially the same calculation as arraysize,
+// but can be used on anonymous types or types defined inside
+// functions.  It's less safe than arraysize as it accepts some
+// (although not all) pointers.  Therefore, you should use arraysize
+// whenever possible.
+//
+// The expression ARRAYSIZE_UNSAFE(a) is a compile-time constant of type
+// size_t.
+//
+// ARRAYSIZE_UNSAFE catches a few type errors.  If you see a compiler error
+//
+//   "warning: division by zero in ..."
+//
+// when using ARRAYSIZE_UNSAFE, you are (wrongfully) giving it a pointer.
+// You should only use ARRAYSIZE_UNSAFE on statically allocated arrays.
+//
+// The following comments are on the implementation details, and can
+// be ignored by the users.
+//
+// ARRAYSIZE_UNSAFE(arr) works by inspecting sizeof(arr) (the # of bytes in
+// the array) and sizeof(*(arr)) (the # of bytes in one array
+// element).  If the former is divisible by the latter, perhaps arr is
+// indeed an array, in which case the division result is the # of
+// elements in the array.  Otherwise, arr cannot possibly be an array,
+// and we generate a compiler error to prevent the code from
+// compiling.
+//
+// Since the size of bool is implementation-defined, we need to cast
+// !(sizeof(a) & sizeof(*(a))) to size_t in order to ensure the final
+// result has type size_t.
+//
+// This macro is not perfect as it wrongfully accepts certain
+// pointers, namely where the pointer size is divisible by the pointee
+// size.  Since all our code has to go through a 32-bit compiler,
+// where a pointer is 4 bytes, this means all pointers to a type whose
+// size is 3 or greater than 4 will be (righteously) rejected.
+#define ARRAYSIZE_UNSAFE(a)     \
+  ((sizeof(a) / sizeof(*(a))) / \
+    static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))
+
+// Changing this definition will cause you a lot of pain.  A majority of
+// vendor code defines LIKELY and UNLIKELY this way, and includes
+// this header through an indirect path.
+#define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
+#define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
+
+#define WARN_UNUSED __attribute__((warn_unused_result))
+
+// A deprecated function to call to create a false use of the parameter, for
+// example:
+//   int foo(int x) { UNUSED(x); return 10; }
+// to avoid compiler warnings. Going forward we prefer ATTRIBUTE_UNUSED.
+template <typename... T>
+void UNUSED(const T&...) {
+}
+
+// An attribute to place on a parameter to a function, for example:
+//   int foo(int x ATTRIBUTE_UNUSED) { return 10; }
+// to avoid compiler warnings.
+#define ATTRIBUTE_UNUSED __attribute__((__unused__))
+
+// The FALLTHROUGH_INTENDED macro can be used to annotate implicit fall-through
+// between switch labels:
+//  switch (x) {
+//    case 40:
+//    case 41:
+//      if (truth_is_out_there) {
+//        ++x;
+//        FALLTHROUGH_INTENDED;  // Use instead of/along with annotations in
+//                               // comments.
+//      } else {
+//        return x;
+//      }
+//    case 42:
+//      ...
+//
+//  As shown in the example above, the FALLTHROUGH_INTENDED macro should be
+//  followed by a semicolon. It is designed to mimic control-flow statements
+//  like 'break;', so it can be placed in most places where 'break;' can, but
+//  only if there are no statements on the execution path between it and the
+//  next switch label.
+//
+//  When compiled with clang, the FALLTHROUGH_INTENDED macro is expanded to
+//  [[clang::fallthrough]] attribute, which is analysed when performing switch
+//  labels fall-through diagnostic ('-Wimplicit-fallthrough'). See clang
+//  documentation on language extensions for details:
+//  http://clang.llvm.org/docs/LanguageExtensions.html#clang__fallthrough
+//
+//  When used with unsupported compilers, the FALLTHROUGH_INTENDED macro has no
+//  effect on diagnostics.
+//
+//  In either case this macro has no effect on runtime behavior and performance
+//  of code.
+#if defined(__clang__) && defined(__has_warning)
+#if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
+#define FALLTHROUGH_INTENDED [[clang::fallthrough]]  // NOLINT
+#endif
+#endif
+
+#ifndef FALLTHROUGH_INTENDED
+#define FALLTHROUGH_INTENDED \
+  do {                       \
+  } while (0)
+#endif
+
+// Current ABI string
+#if defined(__arm__)
+#define ABI_STRING "arm"
+#elif defined(__aarch64__)
+#define ABI_STRING "arm64"
+#elif defined(__i386__)
+#define ABI_STRING "x86"
+#elif defined(__x86_64__)
+#define ABI_STRING "x86_64"
+#elif defined(__mips__) && !defined(__LP64__)
+#define ABI_STRING "mips"
+#elif defined(__mips__) && defined(__LP64__)
+#define ABI_STRING "mips64"
+#endif
+
+#endif  // ANDROID_BASE_MACROS_H

Bcore/src/main/cpp/android-base/memory.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_MEMORY_H
+#define ANDROID_BASE_MEMORY_H
+
+namespace android_lkchan {
+namespace base {
+
+// Use memcpy for access to unaligned data on targets with alignment
+// restrictions.  The compiler will generate appropriate code to access these
+// structures without generating alignment exceptions.
+template <typename T>
+static inline T get_unaligned(const void* address) {
+  T result;
+  memcpy(&result, address, sizeof(T));
+  return result;
+}
+
+template <typename T>
+static inline void put_unaligned(void* address, T v) {
+  memcpy(address, &v, sizeof(T));
+}
+
+} // namespace base
+} // namespace android_lkchan
+
+#endif  // ANDROID_BASE_MEMORY_H

Bcore/src/main/cpp/android-base/stringprintf.cpp

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/stringprintf.h"
+
+#include <stdio.h>
+
+#include <string>
+
+namespace android_lkchan {
+namespace base {
+
+void StringAppendV(std::string* dst, const char* format, va_list ap) {
+  // First try with a small fixed size buffer
+  char space[1024];
+
+  // It's possible for methods that use a va_list to invalidate
+  // the data in it upon use.  The fix is to make a copy
+  // of the structure before using it and use that copy instead.
+  va_list backup_ap;
+  va_copy(backup_ap, ap);
+  int result = vsnprintf(space, sizeof(space), format, backup_ap);
+  va_end(backup_ap);
+
+  if (result < static_cast<int>(sizeof(space))) {
+    if (result >= 0) {
+      // Normal case -- everything fit.
+      dst->append(space, result);
+      return;
+    }
+
+    if (result < 0) {
+      // Just an error.
+      return;
+    }
+  }
+
+  // Increase the buffer size to the size requested by vsnprintf,
+  // plus one for the closing \0.
+  int length = result + 1;
+  char* buf = new char[length];
+
+  // Restore the va_list before we use it again
+  va_copy(backup_ap, ap);
+  result = vsnprintf(buf, length, format, backup_ap);
+  va_end(backup_ap);
+
+  if (result >= 0 && result < length) {
+    // It fit
+    dst->append(buf, result);
+  }
+  delete[] buf;
+}
+
+std::string StringPrintf(const char* fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  std::string result;
+  StringAppendV(&result, fmt, ap);
+  va_end(ap);
+  return result;
+}
+
+void StringAppendF(std::string* dst, const char* format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  StringAppendV(dst, format, ap);
+  va_end(ap);
+}
+
+}  // namespace base
+}  // namespace android_lkchan

Bcore/src/main/cpp/android-base/stringprintf.h

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_STRINGPRINTF_H
+#define ANDROID_BASE_STRINGPRINTF_H
+
+#include <stdarg.h>
+#include <string>
+
+namespace android_lkchan {
+namespace base {
+
+// These printf-like functions are implemented in terms of vsnprintf, so they
+// use the same attribute for compile-time format string checking. On Windows,
+// if the mingw version of vsnprintf is used, use `gnu_printf' which allows z
+// in %zd and PRIu64 (and related) to be recognized by the compile-time
+// checking.
+#define ANDROID_BASE_FORMAT_ARCHETYPE __printf__
+#ifdef __USE_MINGW_ANSI_STDIO
+#if __USE_MINGW_ANSI_STDIO
+#undef ANDROID_BASE_FORMAT_ARCHETYPE
+#define ANDROID_BASE_FORMAT_ARCHETYPE gnu_printf
+#endif
+#endif
+
+// Returns a string corresponding to printf-like formatting of the arguments.
+std::string StringPrintf(const char* fmt, ...)
+    __attribute__((__format__(ANDROID_BASE_FORMAT_ARCHETYPE, 1, 2)));
+
+// Appends a printf-like formatting of the arguments to 'dst'.
+void StringAppendF(std::string* dst, const char* fmt, ...)
+    __attribute__((__format__(ANDROID_BASE_FORMAT_ARCHETYPE, 2, 3)));
+
+// Appends a printf-like formatting of the arguments to 'dst'.
+void StringAppendV(std::string* dst, const char* format, va_list ap)
+    __attribute__((__format__(ANDROID_BASE_FORMAT_ARCHETYPE, 2, 0)));
+
+#undef ANDROID_BASE_FORMAT_ARCHETYPE
+
+}  // namespace base
+}  // namespace android_lkchan
+
+#endif  // ANDROID_BASE_STRINGPRINTF_H

Bcore/src/main/cpp/android-base/strings.cpp

@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android-base/strings.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <string>
+#include <vector>
+
+namespace android_lkchan {
+namespace base {
+
+#define CHECK_NE(a, b) \
+  if ((a) == (b)) abort();
+
+std::vector<std::string> Split(const std::string& s,
+                               const std::string& delimiters) {
+  CHECK_NE(delimiters.size(), 0U);
+
+  std::vector<std::string> result;
+
+  size_t base = 0;
+  size_t found;
+  while (true) {
+    found = s.find_first_of(delimiters, base);
+    result.push_back(s.substr(base, found - base));
+    if (found == s.npos) break;
+    base = found + 1;
+  }
+
+  return result;
+}
+
+std::string Trim(const std::string& s) {
+  std::string result;
+
+  if (s.size() == 0) {
+    return result;
+  }
+
+  size_t start_index = 0;
+  size_t end_index = s.size() - 1;
+
+  // Skip initial whitespace.
+  while (start_index < s.size()) {
+    if (!isspace(s[start_index])) {
+      break;
+    }
+    start_index++;
+  }
+
+  // Skip terminating whitespace.
+  while (end_index >= start_index) {
+    if (!isspace(s[end_index])) {
+      break;
+    }
+    end_index--;
+  }
+
+  // All spaces, no beef.
+  if (end_index < start_index) {
+    return "";
+  }
+  // Start_index is the first non-space, end_index is the last one.
+  return s.substr(start_index, end_index - start_index + 1);
+}
+
+// These cases are probably the norm, so we mark them extern in the header to
+// aid compile time and binary size.
+template std::string Join(const std::vector<std::string>&, char);
+template std::string Join(const std::vector<const char*>&, char);
+template std::string Join(const std::vector<std::string>&, const std::string&);
+template std::string Join(const std::vector<const char*>&, const std::string&);
+
+bool StartsWith(const std::string& s, const char* prefix) {
+  return strncmp(s.c_str(), prefix, strlen(prefix)) == 0;
+}
+
+bool StartsWith(const std::string& s, const std::string& prefix) {
+  return strncmp(s.c_str(), prefix.c_str(), prefix.size()) == 0;
+}
+
+bool StartsWithIgnoreCase(const std::string& s, const char* prefix) {
+  return strncasecmp(s.c_str(), prefix, strlen(prefix)) == 0;
+}
+
+bool StartsWithIgnoreCase(const std::string& s, const std::string& prefix) {
+  return strncasecmp(s.c_str(), prefix.c_str(), prefix.size()) == 0;
+}
+
+static bool EndsWith(const std::string& s, const char* suffix, size_t suffix_length,
+                     bool case_sensitive) {
+  size_t string_length = s.size();
+  if (suffix_length > string_length) {
+    return false;
+  }
+  size_t offset = string_length - suffix_length;
+  return (case_sensitive ? strncmp : strncasecmp)(s.c_str() + offset, suffix, suffix_length) == 0;
+}
+
+bool EndsWith(const std::string& s, const char* suffix) {
+  return EndsWith(s, suffix, strlen(suffix), true);
+}
+
+bool EndsWith(const std::string& s, const std::string& suffix) {
+  return EndsWith(s, suffix.c_str(), suffix.size(), true);
+}
+
+bool EndsWithIgnoreCase(const std::string& s, const char* suffix) {
+  return EndsWith(s, suffix, strlen(suffix), false);
+}
+
+bool EndsWithIgnoreCase(const std::string& s, const std::string& suffix) {
+  return EndsWith(s, suffix.c_str(), suffix.size(), false);
+}
+
+bool EqualsIgnoreCase(const std::string& lhs, const std::string& rhs) {
+  return strcasecmp(lhs.c_str(), rhs.c_str()) == 0;
+}
+
+}  // namespace base
+}  // namespace android_lkchan

Bcore/src/main/cpp/android-base/strings.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_STRINGS_H
+#define ANDROID_BASE_STRINGS_H
+
+#include <sstream>
+#include <string>
+#include <vector>
+
+namespace android_lkchan {
+namespace base {
+
+// Splits a string into a vector of strings.
+//
+// The string is split at each occurrence of a character in delimiters.
+//
+// The empty string is not a valid delimiter list.
+std::vector<std::string> Split(const std::string& s,
+                               const std::string& delimiters);
+
+// Trims whitespace off both ends of the given string.
+std::string Trim(const std::string& s);
+
+// Joins a container of things into a single string, using the given separator.
+template <typename ContainerT, typename SeparatorT>
+std::string Join(const ContainerT& things, SeparatorT separator) {
+  if (things.empty()) {
+    return "";
+  }
+
+  std::ostringstream result;
+  result << *things.begin();
+  for (auto it = std::next(things.begin()); it != things.end(); ++it) {
+    result << separator << *it;
+  }
+  return result.str();
+}
+
+// We instantiate the common cases in strings.cpp.
+extern template std::string Join(const std::vector<std::string>&, char);
+extern template std::string Join(const std::vector<const char*>&, char);
+extern template std::string Join(const std::vector<std::string>&, const std::string&);
+extern template std::string Join(const std::vector<const char*>&, const std::string&);
+
+// Tests whether 's' starts with 'prefix'.
+// TODO: string_view
+bool StartsWith(const std::string& s, const char* prefix);
+bool StartsWithIgnoreCase(const std::string& s, const char* prefix);
+bool StartsWith(const std::string& s, const std::string& prefix);
+bool StartsWithIgnoreCase(const std::string& s, const std::string& prefix);
+
+// Tests whether 's' ends with 'suffix'.
+// TODO: string_view
+bool EndsWith(const std::string& s, const char* suffix);
+bool EndsWithIgnoreCase(const std::string& s, const char* suffix);
+bool EndsWith(const std::string& s, const std::string& suffix);
+bool EndsWithIgnoreCase(const std::string& s, const std::string& suffix);
+
+// Tests whether 'lhs' equals 'rhs', ignoring case.
+bool EqualsIgnoreCase(const std::string& lhs, const std::string& rhs);
+
+}  // namespace base
+}  // namespace android_lkchan
+
+#endif  // ANDROID_BASE_STRINGS_H

Bcore/src/main/cpp/android-base/thread_annotations.h

@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_THREAD_ANNOTATIONS_H
+#define ANDROID_BASE_THREAD_ANNOTATIONS_H
+
+#if defined(__SUPPORT_TS_ANNOTATION__) || defined(__clang__)
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)   __attribute__((x))
+#else
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)   // no-op
+#endif
+
+#define CAPABILITY(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(capability(x))
+
+#define SCOPED_CAPABILITY \
+      THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+#define SHARED_CAPABILITY(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(shared_capability(__VA_ARGS__))
+
+#define GUARDED_BY(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+
+#define PT_GUARDED_BY(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
+
+#define EXCLUSIVE_LOCKS_REQUIRED(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
+
+#define SHARED_LOCKS_REQUIRED(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
+
+#define ACQUIRED_BEFORE(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
+
+#define ACQUIRED_AFTER(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
+
+#define REQUIRES(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(requires_capability(__VA_ARGS__))
+
+#define REQUIRES_SHARED(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(requires_shared_capability(__VA_ARGS__))
+
+#define ACQUIRE(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(acquire_capability(__VA_ARGS__))
+
+#define ACQUIRE_SHARED(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(acquire_shared_capability(__VA_ARGS__))
+
+#define RELEASE(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(release_capability(__VA_ARGS__))
+
+#define RELEASE_SHARED(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(release_shared_capability(__VA_ARGS__))
+
+#define TRY_ACQUIRE(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_capability(__VA_ARGS__))
+
+#define TRY_ACQUIRE_SHARED(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_shared_capability(__VA_ARGS__))
+
+#define EXCLUDES(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+#define ASSERT_CAPABILITY(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(assert_capability(x))
+
+#define ASSERT_SHARED_CAPABILITY(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_capability(x))
+
+#define RETURN_CAPABILITY(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+#define EXCLUSIVE_LOCK_FUNCTION(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
+
+#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
+
+#define SHARED_LOCK_FUNCTION(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
+
+#define SHARED_TRYLOCK_FUNCTION(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
+
+#define UNLOCK_FUNCTION(...) \
+      THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
+
+#define SCOPED_LOCKABLE \
+      THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+#define LOCK_RETURNED(x) \
+      THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+#define NO_THREAD_SAFETY_ANALYSIS \
+      THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+
+#endif  // ANDROID_BASE_THREAD_ANNOTATIONS_H

Bcore/src/main/cpp/android-base/unique_fd.h

@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_UNIQUE_FD_H
+#define ANDROID_BASE_UNIQUE_FD_H
+
+#include <fcntl.h>
+
+#if !defined(_WIN32)
+#include <sys/socket.h>
+#endif
+
+#include <sys/types.h>
+#include <unistd.h>
+
+// DO NOT INCLUDE OTHER LIBBASE HEADERS!
+// This file gets used in libbinder, and libbinder is used everywhere.
+// Including other headers from libbase frequently results in inclusion of
+// android-base/macros.h, which causes macro collisions.
+
+// Container for a file descriptor that automatically closes the descriptor as
+// it goes out of scope.
+//
+//      unique_fd ufd(open("/some/path", "r"));
+//      if (ufd.get() == -1) return error;
+//
+//      // Do something useful, possibly including 'return'.
+//
+//      return 0; // Descriptor is closed for you.
+//
+// unique_fd is also known as ScopedFd/ScopedFD/scoped_fd; mentioned here to help
+// you find this class if you're searching for one of those names.
+namespace android_lkchan {
+namespace base {
+
+struct DefaultCloser {
+  static void Close(int fd) {
+    // Even if close(2) fails with EINTR, the fd will have been closed.
+    // Using TEMP_FAILURE_RETRY will either lead to EBADF or closing someone
+    // else's fd.
+    // http://lkml.indiana.edu/hypermail/linux/kernel/0509.1/0877.html
+    ::close(fd);
+  }
+};
+
+template <typename Closer>
+class unique_fd_impl final {
+ public:
+  unique_fd_impl() : value_(-1) {}
+
+  explicit unique_fd_impl(int value) : value_(value) {}
+  ~unique_fd_impl() { reset(); }
+
+  unique_fd_impl(unique_fd_impl&& other) : value_(other.release()) {}
+  unique_fd_impl& operator=(unique_fd_impl&& s) {
+    reset(s.release());
+    return *this;
+  }
+
+  void reset(int new_value = -1) {
+    if (value_ != -1) {
+      Closer::Close(value_);
+    }
+    value_ = new_value;
+  }
+
+  int get() const { return value_; }
+  operator int() const { return get(); }
+
+  int release() __attribute__((warn_unused_result)) {
+    int ret = value_;
+    value_ = -1;
+    return ret;
+  }
+
+ private:
+  int value_;
+
+  unique_fd_impl(const unique_fd_impl&);
+  void operator=(const unique_fd_impl&);
+};
+
+using unique_fd = unique_fd_impl<DefaultCloser>;
+
+#if !defined(_WIN32)
+
+// Inline functions, so that they can be used header-only.
+inline bool Pipe(unique_fd* read, unique_fd* write) {
+  int pipefd[2];
+
+#if defined(__linux__)
+  if (pipe2(pipefd, O_CLOEXEC) != 0) {
+    return false;
+  }
+#else  // defined(__APPLE__)
+  if (pipe(pipefd) != 0) {
+    return false;
+  }
+
+  if (fcntl(pipefd[0], F_SETFD, FD_CLOEXEC) != 0 || fcntl(pipefd[1], F_SETFD, FD_CLOEXEC) != 0) {
+    close(pipefd[0]);
+    close(pipefd[1]);
+    return false;
+  }
+#endif
+
+  read->reset(pipefd[0]);
+  write->reset(pipefd[1]);
+  return true;
+}
+
+inline bool Socketpair(int domain, int type, int protocol, unique_fd* left, unique_fd* right) {
+  int sockfd[2];
+  if (socketpair(domain, type, protocol, sockfd) != 0) {
+    return false;
+  }
+  left->reset(sockfd[0]);
+  right->reset(sockfd[1]);
+  return true;
+}
+
+inline bool Socketpair(int type, unique_fd* left, unique_fd* right) {
+  return Socketpair(AF_UNIX, type, 0, left, right);
+}
+
+#endif  // !defined(_WIN32)
+
+}  // namespace base
+}  // namespace android_lkchan
+
+template <typename T>
+int close(const android_lkchan::base::unique_fd_impl<T>&)
+#if defined(__clang__)
+  __attribute__((__unavailable__(
+#else
+  __attribute__((__error__(
+#endif
+    "close called on unique_fd"
+  )));
+
+#endif  // ANDROID_BASE_UNIQUE_FD_H

Bcore/src/main/cpp/android-base/utf8.h

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_UTF8_H
+#define ANDROID_BASE_UTF8_H
+
+#ifdef _WIN32
+#include <string>
+#else
+// Bring in prototypes for standard APIs so that we can import them into the utf8 namespace.
+#include <fcntl.h>      // open
+#include <stdio.h>      // fopen
+#include <sys/stat.h>   // mkdir
+#include <unistd.h>     // unlink
+#endif
+
+namespace android_lkchan {
+namespace base {
+
+// Only available on Windows because this is only needed on Windows.
+#ifdef _WIN32
+// Convert size number of UTF-16 wchar_t's to UTF-8. Returns whether the
+// conversion was done successfully.
+bool WideToUTF8(const wchar_t* utf16, const size_t size, std::string* utf8);
+
+// Convert a NULL-terminated string of UTF-16 characters to UTF-8. Returns
+// whether the conversion was done successfully.
+bool WideToUTF8(const wchar_t* utf16, std::string* utf8);
+
+// Convert a UTF-16 std::wstring (including any embedded NULL characters) to
+// UTF-8. Returns whether the conversion was done successfully.
+bool WideToUTF8(const std::wstring& utf16, std::string* utf8);
+
+// Convert size number of UTF-8 char's to UTF-16. Returns whether the conversion
+// was done successfully.
+bool UTF8ToWide(const char* utf8, const size_t size, std::wstring* utf16);
+
+// Convert a NULL-terminated string of UTF-8 characters to UTF-16. Returns
+// whether the conversion was done successfully.
+bool UTF8ToWide(const char* utf8, std::wstring* utf16);
+
+// Convert a UTF-8 std::string (including any embedded NULL characters) to
+// UTF-16. Returns whether the conversion was done successfully.
+bool UTF8ToWide(const std::string& utf8, std::wstring* utf16);
+
+// Convert a file system path, represented as a NULL-terminated string of
+// UTF-8 characters, to a UTF-16 string representing the same file system
+// path using the Windows extended-lengh path representation.
+//
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#MAXPATH:
+//   ```The Windows API has many functions that also have Unicode versions to
+//   permit an extended-length path for a maximum total path length of 32,767
+//   characters. To specify an extended-length path, use the "\\?\" prefix.
+//   For example, "\\?\D:\very long path".```
+//
+// Returns whether the conversion was done successfully.
+bool UTF8PathToWindowsLongPath(const char* utf8, std::wstring* utf16);
+#endif
+
+// The functions in the utf8 namespace take UTF-8 strings. For Windows, these
+// are wrappers, for non-Windows these just expose existing APIs. To call these
+// functions, use:
+//
+// // anonymous namespace to avoid conflict with existing open(), unlink(), etc.
+// namespace {
+//   // Import functions into anonymous namespace.
+//   using namespace android_lkchan::base::utf8;
+//
+//   void SomeFunction(const char* name) {
+//     int fd = open(name, ...);  // Calls android_lkchan::base::utf8::open().
+//     ...
+//     unlink(name);              // Calls android_lkchan::base::utf8::unlink().
+//   }
+// }
+namespace utf8 {
+
+#ifdef _WIN32
+FILE* fopen(const char* name, const char* mode);
+int mkdir(const char* name, mode_t mode);
+int open(const char* name, int flags, ...);
+int unlink(const char* name);
+#else
+using ::fopen;
+using ::mkdir;
+using ::open;
+using ::unlink;
+#endif
+
+}  // namespace utf8
+}  // namespace base
+}  // namespace android_lkchan
+
+#endif  // ANDROID_BASE_UTF8_H

Bcore/src/main/cpp/base/bit_utils.h

@@ -0,0 +1,504 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_BIT_UTILS_H_
+#define ART_LIBARTBASE_BASE_BIT_UTILS_H_
+
+#include <limits>
+#include <type_traits>
+
+#include "android-base/logging.h"
+
+#include "base/stl_util_identity.h"
+
+namespace art_lkchan {
+
+// Like sizeof, but count how many bits a type takes. Pass type explicitly.
+template <typename T>
+constexpr size_t BitSizeOf() {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  static_assert(sizeof(T) == sizeof(unsigned_type), "Unexpected type size mismatch!");
+  static_assert(std::numeric_limits<unsigned_type>::radix == 2, "Unexpected radix!");
+  return std::numeric_limits<unsigned_type>::digits;
+}
+
+// Like sizeof, but count how many bits a type takes. Infers type from parameter.
+template <typename T>
+constexpr size_t BitSizeOf(T /*x*/) {
+  return BitSizeOf<T>();
+}
+
+template<typename T>
+constexpr int CLZ(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  static_assert(std::is_unsigned<T>::value, "T must be unsigned");
+  static_assert(std::numeric_limits<T>::radix == 2, "Unexpected radix!");
+  static_assert(sizeof(T) == sizeof(uint64_t) || sizeof(T) <= sizeof(uint32_t),
+                "Unsupported sizeof(T)");
+  DCHECK_NE(x, 0u);
+  constexpr bool is_64_bit = (sizeof(T) == sizeof(uint64_t));
+  constexpr size_t adjustment =
+      is_64_bit ? 0u : std::numeric_limits<uint32_t>::digits - std::numeric_limits<T>::digits;
+  return is_64_bit ? __builtin_clzll(x) : __builtin_clz(x) - adjustment;
+}
+
+// Similar to CLZ except that on zero input it returns bitwidth and supports signed integers.
+template<typename T>
+constexpr int JAVASTYLE_CLZ(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  return (x == 0) ? BitSizeOf<T>() : CLZ(static_cast<unsigned_type>(x));
+}
+
+template<typename T>
+constexpr int CTZ(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  // It is not unreasonable to ask for trailing zeros in a negative number. As such, do not check
+  // that T is an unsigned type.
+  static_assert(sizeof(T) == sizeof(uint64_t) || sizeof(T) <= sizeof(uint32_t),
+                "Unsupported sizeof(T)");
+  DCHECK_NE(x, static_cast<T>(0));
+  return (sizeof(T) == sizeof(uint64_t)) ? __builtin_ctzll(x) : __builtin_ctz(x);
+}
+
+// Similar to CTZ except that on zero input it returns bitwidth and supports signed integers.
+template<typename T>
+constexpr int JAVASTYLE_CTZ(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  return (x == 0) ? BitSizeOf<T>() : CTZ(static_cast<unsigned_type>(x));
+}
+
+// Return the number of 1-bits in `x`.
+template<typename T>
+constexpr int POPCOUNT(T x) {
+  return (sizeof(T) == sizeof(uint32_t)) ? __builtin_popcount(x) : __builtin_popcountll(x);
+}
+
+// Swap bytes.
+template<typename T>
+constexpr T BSWAP(T x) {
+  if (sizeof(T) == sizeof(uint16_t)) {
+    return __builtin_bswap16(x);
+  } else if (sizeof(T) == sizeof(uint32_t)) {
+    return __builtin_bswap32(x);
+  } else {
+    return __builtin_bswap64(x);
+  }
+}
+
+// Find the bit position of the most significant bit (0-based), or -1 if there were no bits set.
+template <typename T>
+constexpr ssize_t MostSignificantBit(T value) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  static_assert(std::is_unsigned<T>::value, "T must be unsigned");
+  static_assert(std::numeric_limits<T>::radix == 2, "Unexpected radix!");
+  return (value == 0) ? -1 : std::numeric_limits<T>::digits - 1 - CLZ(value);
+}
+
+// Find the bit position of the least significant bit (0-based), or -1 if there were no bits set.
+template <typename T>
+constexpr ssize_t LeastSignificantBit(T value) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  static_assert(std::is_unsigned<T>::value, "T must be unsigned");
+  return (value == 0) ? -1 : CTZ(value);
+}
+
+// How many bits (minimally) does it take to store the constant 'value'? i.e. 1 for 1, 3 for 5, etc.
+template <typename T>
+constexpr size_t MinimumBitsToStore(T value) {
+  return static_cast<size_t>(MostSignificantBit(value) + 1);
+}
+
+template <typename T>
+constexpr T RoundUpToPowerOfTwo(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  static_assert(std::is_unsigned<T>::value, "T must be unsigned");
+  // NOTE: Undefined if x > (1 << (std::numeric_limits<T>::digits - 1)).
+  return (x < 2u) ? x : static_cast<T>(1u) << (std::numeric_limits<T>::digits - CLZ(x - 1u));
+}
+
+// Return highest possible N - a power of two - such that val >= N.
+template <typename T>
+constexpr T TruncToPowerOfTwo(T val) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  static_assert(std::is_unsigned<T>::value, "T must be unsigned");
+  return (val != 0) ? static_cast<T>(1u) << (BitSizeOf<T>() - CLZ(val) - 1u) : 0;
+}
+
+template<typename T>
+constexpr bool IsPowerOfTwo(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  // TODO: assert unsigned. There is currently many uses with signed values.
+  return (x & (x - 1)) == 0;
+}
+
+template<typename T>
+constexpr int WhichPowerOf2(T x) {
+  static_assert(std::is_integral<T>::value, "T must be integral");
+  // TODO: assert unsigned. There is currently many uses with signed values.
+  DCHECK((x != 0) && IsPowerOfTwo(x));
+  return CTZ(x);
+}
+
+// For rounding integers.
+// Note: Omit the `n` from T type deduction, deduce only from the `x` argument.
+template<typename T>
+constexpr T RoundDown(T x, typename Identity<T>::type n) WARN_UNUSED;
+
+template<typename T>
+constexpr T RoundDown(T x, typename Identity<T>::type n) {
+  DCHECK(IsPowerOfTwo(n));
+  return (x & -n);
+}
+
+template<typename T>
+constexpr T RoundUp(T x, typename std::remove_reference<T>::type n) WARN_UNUSED;
+
+template<typename T>
+constexpr T RoundUp(T x, typename std::remove_reference<T>::type n) {
+  return RoundDown(x + n - 1, n);
+}
+
+// For aligning pointers.
+template<typename T>
+inline T* AlignDown(T* x, uintptr_t n) WARN_UNUSED;
+
+template<typename T>
+inline T* AlignDown(T* x, uintptr_t n) {
+  return reinterpret_cast<T*>(RoundDown(reinterpret_cast<uintptr_t>(x), n));
+}
+
+template<typename T>
+inline T* AlignUp(T* x, uintptr_t n) WARN_UNUSED;
+
+template<typename T>
+inline T* AlignUp(T* x, uintptr_t n) {
+  return reinterpret_cast<T*>(RoundUp(reinterpret_cast<uintptr_t>(x), n));
+}
+
+template<int n, typename T>
+constexpr bool IsAligned(T x) {
+  static_assert((n & (n - 1)) == 0, "n is not a power of two");
+  return (x & (n - 1)) == 0;
+}
+
+template<int n, typename T>
+inline bool IsAligned(T* x) {
+  return IsAligned<n>(reinterpret_cast<const uintptr_t>(x));
+}
+
+template<typename T>
+inline bool IsAlignedParam(T x, int n) {
+  return (x & (n - 1)) == 0;
+}
+
+template<typename T>
+inline bool IsAlignedParam(T* x, int n) {
+  return IsAlignedParam(reinterpret_cast<const uintptr_t>(x), n);
+}
+
+#define CHECK_ALIGNED(value, alignment) \
+  CHECK(::art_lkchan::IsAligned<alignment>(value)) << reinterpret_cast<const void*>(value)
+
+#define DCHECK_ALIGNED(value, alignment) \
+  DCHECK(::art_lkchan::IsAligned<alignment>(value)) << reinterpret_cast<const void*>(value)
+
+#define CHECK_ALIGNED_PARAM(value, alignment) \
+  CHECK(::art_lkchan::IsAlignedParam(value, alignment)) << reinterpret_cast<const void*>(value)
+
+#define DCHECK_ALIGNED_PARAM(value, alignment) \
+  DCHECK(::art_lkchan::IsAlignedParam(value, alignment)) << reinterpret_cast<const void*>(value)
+
+inline uint16_t Low16Bits(uint32_t value) {
+  return static_cast<uint16_t>(value);
+}
+
+inline uint16_t High16Bits(uint32_t value) {
+  return static_cast<uint16_t>(value >> 16);
+}
+
+inline uint32_t Low32Bits(uint64_t value) {
+  return static_cast<uint32_t>(value);
+}
+
+inline uint32_t High32Bits(uint64_t value) {
+  return static_cast<uint32_t>(value >> 32);
+}
+
+// Check whether an N-bit two's-complement representation can hold value.
+template <typename T>
+inline bool IsInt(size_t N, T value) {
+  if (N == BitSizeOf<T>()) {
+    return true;
+  } else {
+    CHECK_LT(0u, N);
+    CHECK_LT(N, BitSizeOf<T>());
+    T limit = static_cast<T>(1) << (N - 1u);
+    return (-limit <= value) && (value < limit);
+  }
+}
+
+template <typename T>
+constexpr T GetIntLimit(size_t bits) {
+  DCHECK_NE(bits, 0u);
+  DCHECK_LT(bits, BitSizeOf<T>());
+  return static_cast<T>(1) << (bits - 1);
+}
+
+template <size_t kBits, typename T>
+constexpr bool IsInt(T value) {
+  static_assert(kBits > 0, "kBits cannot be zero.");
+  static_assert(kBits <= BitSizeOf<T>(), "kBits must be <= max.");
+  static_assert(std::is_signed<T>::value, "Needs a signed type.");
+  // Corner case for "use all bits." Can't use the limits, as they would overflow, but it is
+  // trivially true.
+  return (kBits == BitSizeOf<T>()) ?
+      true :
+      (-GetIntLimit<T>(kBits) <= value) && (value < GetIntLimit<T>(kBits));
+}
+
+template <size_t kBits, typename T>
+constexpr bool IsUint(T value) {
+  static_assert(kBits > 0, "kBits cannot be zero.");
+  static_assert(kBits <= BitSizeOf<T>(), "kBits must be <= max.");
+  static_assert(std::is_integral<T>::value, "Needs an integral type.");
+  // Corner case for "use all bits." Can't use the limits, as they would overflow, but it is
+  // trivially true.
+  // NOTE: To avoid triggering assertion in GetIntLimit(kBits+1) if kBits+1==BitSizeOf<T>(),
+  // use GetIntLimit(kBits)*2u. The unsigned arithmetic works well for us if it overflows.
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  return (0 <= value) &&
+      (kBits == BitSizeOf<T>() ||
+          (static_cast<unsigned_type>(value) <= GetIntLimit<unsigned_type>(kBits) * 2u - 1u));
+}
+
+template <size_t kBits, typename T>
+constexpr bool IsAbsoluteUint(T value) {
+  static_assert(kBits <= BitSizeOf<T>(), "kBits must be <= max.");
+  static_assert(std::is_integral<T>::value, "Needs an integral type.");
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  return (kBits == BitSizeOf<T>())
+      ? true
+      : IsUint<kBits>(value < 0
+                      ? static_cast<unsigned_type>(-1 - value) + 1u  // Avoid overflow.
+                      : static_cast<unsigned_type>(value));
+}
+
+// Generate maximum/minimum values for signed/unsigned n-bit integers
+template <typename T>
+constexpr T MaxInt(size_t bits) {
+  DCHECK(std::is_unsigned<T>::value || bits > 0u) << "bits cannot be zero for signed.";
+  DCHECK_LE(bits, BitSizeOf<T>());
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  return bits == BitSizeOf<T>()
+      ? std::numeric_limits<T>::max()
+      : std::is_signed<T>::value
+          ? ((bits == 1u) ? 0 : static_cast<T>(MaxInt<unsigned_type>(bits - 1)))
+          : static_cast<T>(UINT64_C(1) << bits) - static_cast<T>(1);
+}
+
+template <typename T>
+constexpr T MinInt(size_t bits) {
+  DCHECK(std::is_unsigned<T>::value || bits > 0) << "bits cannot be zero for signed.";
+  DCHECK_LE(bits, BitSizeOf<T>());
+  return bits == BitSizeOf<T>()
+      ? std::numeric_limits<T>::min()
+      : std::is_signed<T>::value
+          ? ((bits == 1u) ? -1 : static_cast<T>(-1) - MaxInt<T>(bits))
+          : static_cast<T>(0);
+}
+
+// Returns value with bit set in lowest one-bit position or 0 if 0.  (java.lang.X.lowestOneBit).
+template <typename kind>
+inline static kind LowestOneBitValue(kind opnd) {
+  // Hacker's Delight, Section 2-1
+  return opnd & -opnd;
+}
+
+// Returns value with bit set in hightest one-bit position or 0 if 0.  (java.lang.X.highestOneBit).
+template <typename T>
+inline static T HighestOneBitValue(T opnd) {
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  T res;
+  if (opnd == 0) {
+    res = 0;
+  } else {
+    int bit_position = BitSizeOf<T>() - (CLZ(static_cast<unsigned_type>(opnd)) + 1);
+    res = static_cast<T>(UINT64_C(1) << bit_position);
+  }
+  return res;
+}
+
+// Rotate bits.
+template <typename T, bool left>
+inline static T Rot(T opnd, int distance) {
+  int mask = BitSizeOf<T>() - 1;
+  int unsigned_right_shift = left ? (-distance & mask) : (distance & mask);
+  int signed_left_shift = left ? (distance & mask) : (-distance & mask);
+  using unsigned_type = typename std::make_unsigned<T>::type;
+  return (static_cast<unsigned_type>(opnd) >> unsigned_right_shift) | (opnd << signed_left_shift);
+}
+
+// TUNING: use rbit for arm/arm64
+inline static uint32_t ReverseBits32(uint32_t opnd) {
+  // Hacker's Delight 7-1
+  opnd = ((opnd >>  1) & 0x55555555) | ((opnd & 0x55555555) <<  1);
+  opnd = ((opnd >>  2) & 0x33333333) | ((opnd & 0x33333333) <<  2);
+  opnd = ((opnd >>  4) & 0x0F0F0F0F) | ((opnd & 0x0F0F0F0F) <<  4);
+  opnd = ((opnd >>  8) & 0x00FF00FF) | ((opnd & 0x00FF00FF) <<  8);
+  opnd = ((opnd >> 16)) | ((opnd) << 16);
+  return opnd;
+}
+
+// TUNING: use rbit for arm/arm64
+inline static uint64_t ReverseBits64(uint64_t opnd) {
+  // Hacker's Delight 7-1
+  opnd = (opnd & 0x5555555555555555L) << 1 | ((opnd >> 1) & 0x5555555555555555L);
+  opnd = (opnd & 0x3333333333333333L) << 2 | ((opnd >> 2) & 0x3333333333333333L);
+  opnd = (opnd & 0x0f0f0f0f0f0f0f0fL) << 4 | ((opnd >> 4) & 0x0f0f0f0f0f0f0f0fL);
+  opnd = (opnd & 0x00ff00ff00ff00ffL) << 8 | ((opnd >> 8) & 0x00ff00ff00ff00ffL);
+  opnd = (opnd << 48) | ((opnd & 0xffff0000L) << 16) | ((opnd >> 16) & 0xffff0000L) | (opnd >> 48);
+  return opnd;
+}
+
+// Create a mask for the least significant "bits"
+// The returned value is always unsigned to prevent undefined behavior for bitwise ops.
+//
+// Given 'bits',
+// Returns:
+//                   <--- bits --->
+// +-----------------+------------+
+// | 0 ............0 |   1.....1  |
+// +-----------------+------------+
+// msb                           lsb
+template <typename T = size_t>
+inline static constexpr std::make_unsigned_t<T> MaskLeastSignificant(size_t bits) {
+  DCHECK_GE(BitSizeOf<T>(), bits) << "Bits out of range for type T";
+  using unsigned_T = std::make_unsigned_t<T>;
+  if (bits >= BitSizeOf<T>()) {
+    return std::numeric_limits<unsigned_T>::max();
+  } else {
+    auto kOne = static_cast<unsigned_T>(1);  // Do not truncate for T>size_t.
+    return static_cast<unsigned_T>((kOne << bits) - kOne);
+  }
+}
+
+// Clears the bitfield starting at the least significant bit "lsb" with a bitwidth of 'width'.
+// (Equivalent of ARM BFC instruction).
+//
+// Given:
+//           <-- width  -->
+// +--------+------------+--------+
+// | ABC... |  bitfield  | XYZ... +
+// +--------+------------+--------+
+//                       lsb      0
+// Returns:
+//           <-- width  -->
+// +--------+------------+--------+
+// | ABC... | 0........0 | XYZ... +
+// +--------+------------+--------+
+//                       lsb      0
+template <typename T>
+inline static constexpr T BitFieldClear(T value, size_t lsb, size_t width) {
+  DCHECK_GE(BitSizeOf(value), lsb + width) << "Bit field out of range for value";
+  const auto val = static_cast<std::make_unsigned_t<T>>(value);
+  const auto mask = MaskLeastSignificant<T>(width);
+
+  return static_cast<T>(val & ~(mask << lsb));
+}
+
+// Inserts the contents of 'data' into bitfield of 'value'  starting
+// at the least significant bit "lsb" with a bitwidth of 'width'.
+// Note: data must be within range of [MinInt(width), MaxInt(width)].
+// (Equivalent of ARM BFI instruction).
+//
+// Given (data):
+//           <-- width  -->
+// +--------+------------+--------+
+// | ABC... |  bitfield  | XYZ... +
+// +--------+------------+--------+
+//                       lsb      0
+// Returns:
+//           <-- width  -->
+// +--------+------------+--------+
+// | ABC... | 0...data   | XYZ... +
+// +--------+------------+--------+
+//                       lsb      0
+
+template <typename T, typename T2>
+inline static constexpr T BitFieldInsert(T value, T2 data, size_t lsb, size_t width) {
+  DCHECK_GE(BitSizeOf(value), lsb + width) << "Bit field out of range for value";
+  if (width != 0u) {
+    DCHECK_GE(MaxInt<T2>(width), data) << "Data out of range [too large] for bitwidth";
+    DCHECK_LE(MinInt<T2>(width), data) << "Data out of range [too small] for bitwidth";
+  } else {
+    DCHECK_EQ(static_cast<T2>(0), data) << "Data out of range [nonzero] for bitwidth 0";
+  }
+  const auto data_mask = MaskLeastSignificant<T2>(width);
+  const auto value_cleared = BitFieldClear(value, lsb, width);
+
+  return static_cast<T>(value_cleared | ((data & data_mask) << lsb));
+}
+
+// Extracts the bitfield starting at the least significant bit "lsb" with a bitwidth of 'width'.
+// Signed types are sign-extended during extraction. (Equivalent of ARM UBFX/SBFX instruction).
+//
+// Given:
+//           <-- width   -->
+// +--------+-------------+-------+
+// |        |   bitfield  |       +
+// +--------+-------------+-------+
+//                       lsb      0
+// (Unsigned) Returns:
+//                  <-- width   -->
+// +----------------+-------------+
+// | 0...        0  |   bitfield  |
+// +----------------+-------------+
+//                                0
+// (Signed) Returns:
+//                  <-- width   -->
+// +----------------+-------------+
+// | S...        S  |   bitfield  |
+// +----------------+-------------+
+//                                0
+// where S is the highest bit in 'bitfield'.
+template <typename T>
+inline static constexpr T BitFieldExtract(T value, size_t lsb, size_t width) {
+  DCHECK_GE(BitSizeOf(value), lsb + width) << "Bit field out of range for value";
+  const auto val = static_cast<std::make_unsigned_t<T>>(value);
+
+  const T bitfield_unsigned =
+      static_cast<T>((val >> lsb) & MaskLeastSignificant<T>(width));
+  if (std::is_signed<T>::value) {
+    // Perform sign extension
+    if (width == 0) {  // Avoid underflow.
+      return static_cast<T>(0);
+    } else if (bitfield_unsigned & (1 << (width - 1))) {  // Detect if sign bit was set.
+      // MSB        <width> LSB
+      // 0b11111...100...000000
+      const auto ones_negmask = ~MaskLeastSignificant<T>(width);
+      return static_cast<T>(bitfield_unsigned | ones_negmask);
+    }
+  }
+  // Skip sign extension.
+  return bitfield_unsigned;
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_BIT_UTILS_H_

Bcore/src/main/cpp/base/casts.h

@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_CASTS_H_
+#define ART_LIBARTBASE_BASE_CASTS_H_
+
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <limits>
+#include <type_traits>
+
+#include <android-base/logging.h>
+
+#include "stl_util_identity.h"
+
+namespace art_lkchan {
+
+// Use implicit_cast as a safe version of static_cast or const_cast
+// for upcasting in the type hierarchy (i.e. casting a pointer to Foo
+// to a pointer to SuperclassOfFoo or casting a pointer to Foo to
+// a const pointer to Foo).
+// When you use implicit_cast, the compiler checks that the cast is safe.
+// Such explicit implicit_casts are necessary in surprisingly many
+// situations where C++ demands an exact type match instead of an
+// argument type convertible to a target type.
+//
+// The From type can be inferred, so the preferred syntax for using
+// implicit_cast is the same as for static_cast etc.:
+//
+//   implicit_cast<ToType>(expr)
+//
+// implicit_cast would have been part of the C++ standard library,
+// but the proposal was submitted too late.  It will probably make
+// its way into the language in the future.
+template<typename To, typename From>
+inline To implicit_cast(From const &f) {
+  return f;
+}
+
+// When you upcast (that is, cast a pointer from type Foo to type
+// SuperclassOfFoo), it's fine to use implicit_cast<>, since upcasts
+// always succeed.  When you downcast (that is, cast a pointer from
+// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
+// how do you know the pointer is really of type SubclassOfFoo?  It
+// could be a bare Foo, or of type DifferentSubclassOfFoo.  Thus,
+// when you downcast, you should use this macro.  In debug mode, we
+// use dynamic_cast<> to double-check the downcast is legal (we die
+// if it's not).  In normal mode, we do the efficient static_cast<>
+// instead.  Thus, it's important to test in debug mode to make sure
+// the cast is legal!
+//    This is the only place in the code we should use dynamic_cast<>.
+// In particular, you SHOULDN'T be using dynamic_cast<> in order to
+// do RTTI (eg code like this:
+//    if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
+//    if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
+// You should design the code some other way not to need this.
+
+template<typename To, typename From>     // use like this: down_cast<T*>(foo);
+inline To down_cast(From* f) {                   // so we only accept pointers
+  static_assert(std::is_base_of<From, typename std::remove_pointer<To>::type>::value,
+                "down_cast unsafe as To is not a subtype of From");
+
+  return static_cast<To>(f);
+}
+
+template<typename To, typename From>     // use like this: down_cast<T&>(foo);
+inline To down_cast(From& f) {           // so we only accept references
+  static_assert(std::is_base_of<From, typename std::remove_reference<To>::type>::value,
+                "down_cast unsafe as To is not a subtype of From");
+
+  return static_cast<To>(f);
+}
+
+template <class Dest, class Source>
+inline Dest bit_cast(const Source& source) {
+  // Compile time assertion: sizeof(Dest) == sizeof(Source)
+  // A compile error here means your Dest and Source have different sizes.
+  static_assert(sizeof(Dest) == sizeof(Source), "sizes should be equal");
+  Dest dest;
+  memcpy(&dest, &source, sizeof(dest));
+  return dest;
+}
+
+// A version of static_cast that DCHECKs that the value can be precisely represented
+// when converting to Dest.
+template <typename Dest, typename Source>
+constexpr Dest dchecked_integral_cast(Source source) {
+  DCHECK(
+      // Check that the value is within the lower limit of Dest.
+      (static_cast<intmax_t>(std::numeric_limits<Dest>::min()) <=
+          static_cast<intmax_t>(std::numeric_limits<Source>::min()) ||
+          source >= static_cast<Source>(std::numeric_limits<Dest>::min())) &&
+      // Check that the value is within the upper limit of Dest.
+      (static_cast<uintmax_t>(std::numeric_limits<Dest>::max()) >=
+          static_cast<uintmax_t>(std::numeric_limits<Source>::max()) ||
+          source <= static_cast<Source>(std::numeric_limits<Dest>::max())))
+      << "dchecked_integral_cast failed for " << source
+      << " (would be " << static_cast<Dest>(source) << ")";
+
+  return static_cast<Dest>(source);
+}
+
+// A version of dchecked_integral_cast casting between an integral type and an enum type.
+// When casting to an enum type, the cast does not check if the value corresponds to an enumerator.
+// When casting from an enum type, the target type can be omitted and the enum's underlying type
+// shall be used.
+
+template <typename Dest, typename Source>
+constexpr
+typename std::enable_if<!std::is_enum<Source>::value, Dest>::type
+enum_cast(Source value) {
+  return static_cast<Dest>(
+      dchecked_integral_cast<typename std::underlying_type<Dest>::type>(value));
+}
+
+template <typename Dest = void, typename Source>
+constexpr
+typename std::enable_if<std::is_enum<Source>::value,
+                        typename std::conditional<std::is_same<Dest, void>::value,
+                                                  std::underlying_type<Source>,
+                                                  Identity<Dest>>::type>::type::type
+enum_cast(Source value) {
+  using return_type = typename std::conditional<std::is_same<Dest, void>::value,
+                                                std::underlying_type<Source>,
+                                                Identity<Dest>>::type::type;
+  return dchecked_integral_cast<return_type>(
+      static_cast<typename std::underlying_type<Source>::type>(value));
+}
+
+// A version of reinterpret_cast<>() between pointers and int64_t/uint64_t
+// that goes through uintptr_t to avoid treating the pointer as "signed."
+
+template <typename Dest, typename Source>
+inline Dest reinterpret_cast64(Source source) {
+  // This is the overload for casting from int64_t/uint64_t to a pointer.
+  static_assert(std::is_same<Source, int64_t>::value || std::is_same<Source, uint64_t>::value,
+                "Source must be int64_t or uint64_t.");
+  static_assert(std::is_pointer<Dest>::value, "Dest must be a pointer.");
+  // Check that we don't lose any non-0 bits here.
+  DCHECK_EQ(static_cast<Source>(static_cast<uintptr_t>(source)), source);
+  return reinterpret_cast<Dest>(static_cast<uintptr_t>(source));
+}
+
+template <typename Dest, typename Source>
+inline Dest reinterpret_cast64(Source* ptr) {
+  // This is the overload for casting from a pointer to int64_t/uint64_t.
+  static_assert(std::is_same<Dest, int64_t>::value || std::is_same<Dest, uint64_t>::value,
+                "Dest must be int64_t or uint64_t.");
+  static_assert(sizeof(uintptr_t) <= sizeof(Dest), "Expecting at most 64-bit pointers.");
+  return static_cast<Dest>(reinterpret_cast<uintptr_t>(ptr));
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_CASTS_H_

Bcore/src/main/cpp/base/enums.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_ENUMS_H_
+#define ART_LIBARTBASE_BASE_ENUMS_H_
+
+#include <cstddef>
+#include <ostream>
+
+namespace art_lkchan {
+
+enum class PointerSize : size_t {
+  k32 = 4,
+  k64 = 8
+};
+
+inline std::ostream& operator<<(std::ostream& os, const PointerSize& rhs) {
+  switch (rhs) {
+    case PointerSize::k32: os << "k32"; break;
+    case PointerSize::k64: os << "k64"; break;
+    default: os << "PointerSize[" << static_cast<int>(rhs) << "]"; break;
+  }
+  return os;
+}
+
+static constexpr PointerSize kRuntimePointerSize = sizeof(void*) == 8U
+                                                       ? PointerSize::k64
+                                                       : PointerSize::k32;
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_ENUMS_H_

Bcore/src/main/cpp/base/globals.h

@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_GLOBALS_H_
+#define ART_LIBARTBASE_BASE_GLOBALS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace art_lkchan {
+
+static constexpr size_t KB = 1024;
+static constexpr size_t MB = KB * KB;
+static constexpr size_t GB = KB * KB * KB;
+
+// Runtime sizes.
+static constexpr size_t kBitsPerByte = 8;
+static constexpr size_t kBitsPerByteLog2 = 3;
+static constexpr int kBitsPerIntPtrT = sizeof(intptr_t) * kBitsPerByte;
+
+// Required stack alignment
+static constexpr size_t kStackAlignment = 16;
+
+// System page size. We check this against sysconf(_SC_PAGE_SIZE) at runtime, but use a simple
+// compile-time constant so the compiler can generate better code.
+static constexpr int kPageSize = 4096;
+
+// Returns whether the given memory offset can be used for generating
+// an implicit null check.
+static inline bool CanDoImplicitNullCheckOn(uintptr_t offset) {
+  return offset < kPageSize;
+}
+
+// Required object alignment
+static constexpr size_t kObjectAlignmentShift = 3;
+static constexpr size_t kObjectAlignment = 1u << kObjectAlignmentShift;
+static constexpr size_t kLargeObjectAlignment = kPageSize;
+
+// Clion, clang analyzer, etc can falsely believe that "if (kIsDebugBuild)" always
+// returns the same value. By wrapping into a call to another constexpr function, we force it
+// to realize that is not actually always evaluating to the same value.
+static constexpr bool GlobalsReturnSelf(bool self) { return self; }
+
+// Whether or not this is a debug build. Useful in conditionals where NDEBUG isn't.
+// TODO: Use only __clang_analyzer__ here. b/64455231
+#if defined(NDEBUG) && !defined(__CLION_IDE__)
+static constexpr bool kIsDebugBuild = GlobalsReturnSelf(false);
+#else
+static constexpr bool kIsDebugBuild = GlobalsReturnSelf(true);
+#endif
+
+#if defined(ART_PGO_INSTRUMENTATION)
+static constexpr bool kIsPGOInstrumentation = true;
+#else
+static constexpr bool kIsPGOInstrumentation = false;
+#endif
+
+// ART_TARGET - Defined for target builds of ART.
+// ART_TARGET_LINUX - Defined for target Linux builds of ART.
+// ART_TARGET_ANDROID - Defined for target Android builds of ART.
+// Note: Either ART_TARGET_LINUX or ART_TARGET_ANDROID need to be set when ART_TARGET is set.
+// Note: When ART_TARGET_LINUX is defined mem_map.h will not be using Ashmem for memory mappings
+// (usually only available on Android kernels).
+#if defined(ART_TARGET)
+// Useful in conditionals where ART_TARGET isn't.
+static constexpr bool kIsTargetBuild = true;
+# if defined(ART_TARGET_LINUX)
+static constexpr bool kIsTargetLinux = true;
+# elif defined(ART_TARGET_ANDROID)
+static constexpr bool kIsTargetLinux = false;
+# else
+# error "Either ART_TARGET_LINUX or ART_TARGET_ANDROID needs to be defined for target builds."
+# endif
+#else
+static constexpr bool kIsTargetBuild = false;
+# if defined(ART_TARGET_LINUX)
+# error "ART_TARGET_LINUX defined for host build."
+# elif defined(ART_TARGET_ANDROID)
+# error "ART_TARGET_ANDROID defined for host build."
+# else
+static constexpr bool kIsTargetLinux = false;
+# endif
+#endif
+
+// Additional statically-linked ART binaries (dex2oats, oatdumps, etc.) are
+// always available on the host
+#if !defined(ART_TARGET)
+static constexpr bool kHostStaticBuildEnabled = true;
+#else
+static constexpr bool kHostStaticBuildEnabled = false;
+#endif
+
+// Garbage collector constants.
+static constexpr bool kMovingCollector = true;
+static constexpr bool kMarkCompactSupport = false && kMovingCollector;
+// True if we allow moving classes.
+static constexpr bool kMovingClasses = !kMarkCompactSupport;
+
+// If true, enable the tlab allocator by default.
+#ifdef ART_USE_TLAB
+static constexpr bool kUseTlab = true;
+#else
+static constexpr bool kUseTlab = false;
+#endif
+
+// Kinds of tracing clocks.
+enum class TraceClockSource {
+  kThreadCpu,
+  kWall,
+  kDual,  // Both wall and thread CPU clocks.
+};
+
+#if defined(__linux__)
+static constexpr TraceClockSource kDefaultTraceClockSource = TraceClockSource::kDual;
+#else
+static constexpr TraceClockSource kDefaultTraceClockSource = TraceClockSource::kWall;
+#endif
+
+static constexpr bool kDefaultMustRelocate = true;
+
+// Size of a heap reference.
+static constexpr size_t kHeapReferenceSize = sizeof(uint32_t);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_GLOBALS_H_

Bcore/src/main/cpp/base/hash_map.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_HASH_MAP_H_
+#define ART_LIBARTBASE_BASE_HASH_MAP_H_
+
+#include <utility>
+
+#include "hash_set.h"
+
+namespace art_lkchan {
+
+template <typename Fn>
+class HashMapWrapper {
+ public:
+  // Hash function.
+  template <class Key, class Value>
+  size_t operator()(const std::pair<Key, Value>& pair) const {
+    return fn_(pair.first);
+  }
+  template <class Key>
+  size_t operator()(const Key& key) const {
+    return fn_(key);
+  }
+  template <class Key, class Value>
+  bool operator()(const std::pair<Key, Value>& a, const std::pair<Key, Value>& b) const {
+    return fn_(a.first, b.first);
+  }
+  template <class Key, class Value, class Element>
+  bool operator()(const std::pair<Key, Value>& a, const Element& element) const {
+    return fn_(a.first, element);
+  }
+
+ private:
+  Fn fn_;
+};
+
+template <class Key, class Value, class EmptyFn,
+    class HashFn = std::hash<Key>, class Pred = std::equal_to<Key>,
+    class Alloc = std::allocator<std::pair<Key, Value>>>
+class HashMap : public HashSet<std::pair<Key, Value>,
+                               EmptyFn,
+                               HashMapWrapper<HashFn>,
+                               HashMapWrapper<Pred>,
+                               Alloc> {
+ private:
+  using Base = HashSet<std::pair<Key, Value>,
+                       EmptyFn,
+                       HashMapWrapper<HashFn>,
+                       HashMapWrapper<Pred>,
+                       Alloc>;
+
+ public:
+  HashMap() : Base() { }
+  explicit HashMap(const Alloc& alloc)
+      : Base(alloc) { }
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_HASH_MAP_H_

Bcore/src/main/cpp/base/hash_set.h

@@ -0,0 +1,693 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_HASH_SET_H_
+#define ART_LIBARTBASE_BASE_HASH_SET_H_
+
+#include <stdint.h>
+
+#include <functional>
+#include <iterator>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include <android-base/logging.h>
+
+#include "bit_utils.h"
+#include "macros.h"
+
+namespace art_lkchan {
+
+// Returns true if an item is empty.
+template <class T>
+class DefaultEmptyFn {
+ public:
+  void MakeEmpty(T& item) const {
+    item = T();
+  }
+  bool IsEmpty(const T& item) const {
+    return item == T();
+  }
+};
+
+template <class T>
+class DefaultEmptyFn<T*> {
+ public:
+  void MakeEmpty(T*& item) const {
+    item = nullptr;
+  }
+  bool IsEmpty(T* const& item) const {
+    return item == nullptr;
+  }
+};
+
+// Low memory version of a hash set, uses less memory than std::unordered_set since elements aren't
+// boxed. Uses linear probing to resolve collisions.
+// EmptyFn needs to implement two functions MakeEmpty(T& item) and IsEmpty(const T& item).
+// TODO: We could get rid of this requirement by using a bitmap, though maybe this would be slower
+// and more complicated.
+template <class T, class EmptyFn = DefaultEmptyFn<T>, class HashFn = std::hash<T>,
+    class Pred = std::equal_to<T>, class Alloc = std::allocator<T>>
+class HashSet {
+  template <class Elem, class HashSetType>
+  class BaseIterator : std::iterator<std::forward_iterator_tag, Elem> {
+   public:
+    BaseIterator(const BaseIterator&) = default;
+    BaseIterator(BaseIterator&&) = default;
+    BaseIterator(HashSetType* hash_set, size_t index) : index_(index), hash_set_(hash_set) {
+    }
+    BaseIterator& operator=(const BaseIterator&) = default;
+    BaseIterator& operator=(BaseIterator&&) = default;
+
+    bool operator==(const BaseIterator& other) const {
+      return hash_set_ == other.hash_set_ && this->index_ == other.index_;
+    }
+
+    bool operator!=(const BaseIterator& other) const {
+      return !(*this == other);
+    }
+
+    BaseIterator operator++() {  // Value after modification.
+      this->index_ = this->NextNonEmptySlot(this->index_, hash_set_);
+      return *this;
+    }
+
+    BaseIterator operator++(int) {
+      BaseIterator temp = *this;
+      this->index_ = this->NextNonEmptySlot(this->index_, hash_set_);
+      return temp;
+    }
+
+    Elem& operator*() const {
+      DCHECK(!hash_set_->IsFreeSlot(this->index_));
+      return hash_set_->ElementForIndex(this->index_);
+    }
+
+    Elem* operator->() const {
+      return &**this;
+    }
+
+    // TODO: Operator -- --(int)  (and use std::bidirectional_iterator_tag)
+
+   private:
+    size_t index_;
+    HashSetType* hash_set_;
+
+    size_t NextNonEmptySlot(size_t index, const HashSet* hash_set) const {
+      const size_t num_buckets = hash_set->NumBuckets();
+      DCHECK_LT(index, num_buckets);
+      do {
+        ++index;
+      } while (index < num_buckets && hash_set->IsFreeSlot(index));
+      return index;
+    }
+
+    friend class HashSet;
+  };
+
+ public:
+  using value_type = T;
+  using allocator_type = Alloc;
+  using reference = T&;
+  using const_reference = const T&;
+  using pointer = T*;
+  using const_pointer = const T*;
+  using iterator = BaseIterator<T, HashSet>;
+  using const_iterator = BaseIterator<const T, const HashSet>;
+  using size_type = size_t;
+  using difference_type = ptrdiff_t;
+
+  static constexpr double kDefaultMinLoadFactor = 0.4;
+  static constexpr double kDefaultMaxLoadFactor = 0.7;
+  static constexpr size_t kMinBuckets = 1000;
+
+  // If we don't own the data, this will create a new array which owns the data.
+  void Clear() {
+    DeallocateStorage();
+    num_elements_ = 0;
+    elements_until_expand_ = 0;
+  }
+
+  HashSet() : HashSet(kDefaultMinLoadFactor, kDefaultMaxLoadFactor) {}
+
+  HashSet(double min_load_factor, double max_load_factor) noexcept
+      : num_elements_(0u),
+        num_buckets_(0u),
+        elements_until_expand_(0u),
+        owns_data_(false),
+        data_(nullptr),
+        min_load_factor_(min_load_factor),
+        max_load_factor_(max_load_factor) {
+    DCHECK_GT(min_load_factor, 0.0);
+    DCHECK_LT(max_load_factor, 1.0);
+  }
+
+  explicit HashSet(const allocator_type& alloc) noexcept
+      : allocfn_(alloc),
+        hashfn_(),
+        emptyfn_(),
+        pred_(),
+        num_elements_(0u),
+        num_buckets_(0u),
+        elements_until_expand_(0u),
+        owns_data_(false),
+        data_(nullptr),
+        min_load_factor_(kDefaultMinLoadFactor),
+        max_load_factor_(kDefaultMaxLoadFactor) {
+  }
+
+  HashSet(const HashSet& other) noexcept
+      : allocfn_(other.allocfn_),
+        hashfn_(other.hashfn_),
+        emptyfn_(other.emptyfn_),
+        pred_(other.pred_),
+        num_elements_(other.num_elements_),
+        num_buckets_(0),
+        elements_until_expand_(other.elements_until_expand_),
+        owns_data_(false),
+        data_(nullptr),
+        min_load_factor_(other.min_load_factor_),
+        max_load_factor_(other.max_load_factor_) {
+    AllocateStorage(other.NumBuckets());
+    for (size_t i = 0; i < num_buckets_; ++i) {
+      ElementForIndex(i) = other.data_[i];
+    }
+  }
+
+  // noexcept required so that the move constructor is used instead of copy constructor.
+  // b/27860101
+  HashSet(HashSet&& other) noexcept
+      : allocfn_(std::move(other.allocfn_)),
+        hashfn_(std::move(other.hashfn_)),
+        emptyfn_(std::move(other.emptyfn_)),
+        pred_(std::move(other.pred_)),
+        num_elements_(other.num_elements_),
+        num_buckets_(other.num_buckets_),
+        elements_until_expand_(other.elements_until_expand_),
+        owns_data_(other.owns_data_),
+        data_(other.data_),
+        min_load_factor_(other.min_load_factor_),
+        max_load_factor_(other.max_load_factor_) {
+    other.num_elements_ = 0u;
+    other.num_buckets_ = 0u;
+    other.elements_until_expand_ = 0u;
+    other.owns_data_ = false;
+    other.data_ = nullptr;
+  }
+
+  // Construct from existing data.
+  // Read from a block of memory, if make_copy_of_data is false, then data_ points to within the
+  // passed in ptr_.
+  HashSet(const uint8_t* ptr, bool make_copy_of_data, size_t* read_count) noexcept {
+    uint64_t temp;
+    size_t offset = 0;
+    offset = ReadFromBytes(ptr, offset, &temp);
+    num_elements_ = static_cast<uint64_t>(temp);
+    offset = ReadFromBytes(ptr, offset, &temp);
+    num_buckets_ = static_cast<uint64_t>(temp);
+    CHECK_LE(num_elements_, num_buckets_);
+    offset = ReadFromBytes(ptr, offset, &temp);
+    elements_until_expand_ = static_cast<uint64_t>(temp);
+    offset = ReadFromBytes(ptr, offset, &min_load_factor_);
+    offset = ReadFromBytes(ptr, offset, &max_load_factor_);
+    if (!make_copy_of_data) {
+      owns_data_ = false;
+      data_ = const_cast<T*>(reinterpret_cast<const T*>(ptr + offset));
+      offset += sizeof(*data_) * num_buckets_;
+    } else {
+      AllocateStorage(num_buckets_);
+      // Write elements, not that this may not be safe for cross compilation if the elements are
+      // pointer sized.
+      for (size_t i = 0; i < num_buckets_; ++i) {
+        offset = ReadFromBytes(ptr, offset, &data_[i]);
+      }
+    }
+    // Caller responsible for aligning.
+    *read_count = offset;
+  }
+
+  // Returns how large the table is after being written. If target is null, then no writing happens
+  // but the size is still returned. Target must be 8 byte aligned.
+  size_t WriteToMemory(uint8_t* ptr) const {
+    size_t offset = 0;
+    offset = WriteToBytes(ptr, offset, static_cast<uint64_t>(num_elements_));
+    offset = WriteToBytes(ptr, offset, static_cast<uint64_t>(num_buckets_));
+    offset = WriteToBytes(ptr, offset, static_cast<uint64_t>(elements_until_expand_));
+    offset = WriteToBytes(ptr, offset, min_load_factor_);
+    offset = WriteToBytes(ptr, offset, max_load_factor_);
+    // Write elements, not that this may not be safe for cross compilation if the elements are
+    // pointer sized.
+    for (size_t i = 0; i < num_buckets_; ++i) {
+      offset = WriteToBytes(ptr, offset, data_[i]);
+    }
+    // Caller responsible for aligning.
+    return offset;
+  }
+
+  ~HashSet() {
+    DeallocateStorage();
+  }
+
+  HashSet& operator=(HashSet&& other) noexcept {
+    HashSet(std::move(other)).swap(*this);  // NOLINT [runtime/explicit] [5]
+    return *this;
+  }
+
+  HashSet& operator=(const HashSet& other) noexcept {
+    HashSet(other).swap(*this);  // NOLINT(runtime/explicit) - a case of lint gone mad.
+    return *this;
+  }
+
+  // Lower case for c++11 for each.
+  iterator begin() {
+    iterator ret(this, 0);
+    if (num_buckets_ != 0 && IsFreeSlot(ret.index_)) {
+      ++ret;  // Skip all the empty slots.
+    }
+    return ret;
+  }
+
+  // Lower case for c++11 for each. const version.
+  const_iterator begin() const {
+    const_iterator ret(this, 0);
+    if (num_buckets_ != 0 && IsFreeSlot(ret.index_)) {
+      ++ret;  // Skip all the empty slots.
+    }
+    return ret;
+  }
+
+  // Lower case for c++11 for each.
+  iterator end() {
+    return iterator(this, NumBuckets());
+  }
+
+  // Lower case for c++11 for each. const version.
+  const_iterator end() const {
+    return const_iterator(this, NumBuckets());
+  }
+
+  bool Empty() const {
+    return Size() == 0;
+  }
+
+  // Return true if the hash set has ownership of the underlying data.
+  bool OwnsData() const {
+    return owns_data_;
+  }
+
+  // Erase algorithm:
+  // Make an empty slot where the iterator is pointing.
+  // Scan forwards until we hit another empty slot.
+  // If an element in between doesn't rehash to the range from the current empty slot to the
+  // iterator. It must be before the empty slot, in that case we can move it to the empty slot
+  // and set the empty slot to be the location we just moved from.
+  // Relies on maintaining the invariant that there's no empty slots from the 'ideal' index of an
+  // element to its actual location/index.
+  iterator Erase(iterator it) {
+    // empty_index is the index that will become empty.
+    size_t empty_index = it.index_;
+    DCHECK(!IsFreeSlot(empty_index));
+    size_t next_index = empty_index;
+    bool filled = false;  // True if we filled the empty index.
+    while (true) {
+      next_index = NextIndex(next_index);
+      T& next_element = ElementForIndex(next_index);
+      // If the next element is empty, we are done. Make sure to clear the current empty index.
+      if (emptyfn_.IsEmpty(next_element)) {
+        emptyfn_.MakeEmpty(ElementForIndex(empty_index));
+        break;
+      }
+      // Otherwise try to see if the next element can fill the current empty index.
+      const size_t next_hash = hashfn_(next_element);
+      // Calculate the ideal index, if it is within empty_index + 1 to next_index then there is
+      // nothing we can do.
+      size_t next_ideal_index = IndexForHash(next_hash);
+      // Loop around if needed for our check.
+      size_t unwrapped_next_index = next_index;
+      if (unwrapped_next_index < empty_index) {
+        unwrapped_next_index += NumBuckets();
+      }
+      // Loop around if needed for our check.
+      size_t unwrapped_next_ideal_index = next_ideal_index;
+      if (unwrapped_next_ideal_index < empty_index) {
+        unwrapped_next_ideal_index += NumBuckets();
+      }
+      if (unwrapped_next_ideal_index <= empty_index ||
+          unwrapped_next_ideal_index > unwrapped_next_index) {
+        // If the target index isn't within our current range it must have been probed from before
+        // the empty index.
+        ElementForIndex(empty_index) = std::move(next_element);
+        filled = true;  // TODO: Optimize
+        empty_index = next_index;
+      }
+    }
+    --num_elements_;
+    // If we didn't fill the slot then we need go to the next non free slot.
+    if (!filled) {
+      ++it;
+    }
+    return it;
+  }
+
+  // Find an element, returns end() if not found.
+  // Allows custom key (K) types, example of when this is useful:
+  // Set of Class* sorted by name, want to find a class with a name but can't allocate a dummy
+  // object in the heap for performance solution.
+  template <typename K>
+  iterator Find(const K& key) {
+    return FindWithHash(key, hashfn_(key));
+  }
+
+  template <typename K>
+  const_iterator Find(const K& key) const {
+    return FindWithHash(key, hashfn_(key));
+  }
+
+  template <typename K>
+  iterator FindWithHash(const K& key, size_t hash) {
+    return iterator(this, FindIndex(key, hash));
+  }
+
+  template <typename K>
+  const_iterator FindWithHash(const K& key, size_t hash) const {
+    return const_iterator(this, FindIndex(key, hash));
+  }
+
+  // Insert an element, allows duplicates.
+  template <typename U, typename = typename std::enable_if<std::is_convertible<U, T>::value>::type>
+  void Insert(U&& element) {
+    InsertWithHash(std::forward<U>(element), hashfn_(element));
+  }
+
+  template <typename U, typename = typename std::enable_if<std::is_convertible<U, T>::value>::type>
+  void InsertWithHash(U&& element, size_t hash) {
+    DCHECK_EQ(hash, hashfn_(element));
+    if (num_elements_ >= elements_until_expand_) {
+      Expand();
+      DCHECK_LT(num_elements_, elements_until_expand_);
+    }
+    const size_t index = FirstAvailableSlot(IndexForHash(hash));
+    data_[index] = std::forward<U>(element);
+    ++num_elements_;
+  }
+
+  size_t Size() const {
+    return num_elements_;
+  }
+
+  void swap(HashSet& other) {
+    // Use argument-dependent lookup with fall-back to std::swap() for function objects.
+    using std::swap;
+    swap(allocfn_, other.allocfn_);
+    swap(hashfn_, other.hashfn_);
+    swap(emptyfn_, other.emptyfn_);
+    swap(pred_, other.pred_);
+    std::swap(data_, other.data_);
+    std::swap(num_buckets_, other.num_buckets_);
+    std::swap(num_elements_, other.num_elements_);
+    std::swap(elements_until_expand_, other.elements_until_expand_);
+    std::swap(min_load_factor_, other.min_load_factor_);
+    std::swap(max_load_factor_, other.max_load_factor_);
+    std::swap(owns_data_, other.owns_data_);
+  }
+
+  allocator_type get_allocator() const {
+    return allocfn_;
+  }
+
+  void ShrinkToMaximumLoad() {
+    Resize(Size() / max_load_factor_);
+  }
+
+  // Reserve enough room to insert until Size() == num_elements without requiring to grow the hash
+  // set. No-op if the hash set is already large enough to do this.
+  void Reserve(size_t num_elements) {
+    size_t num_buckets = num_elements / max_load_factor_;
+    // Deal with rounding errors. Add one for rounding.
+    while (static_cast<size_t>(num_buckets * max_load_factor_) <= num_elements + 1u) {
+      ++num_buckets;
+    }
+    if (num_buckets > NumBuckets()) {
+      Resize(num_buckets);
+    }
+  }
+
+  // To distance that inserted elements were probed. Used for measuring how good hash functions
+  // are.
+  size_t TotalProbeDistance() const {
+    size_t total = 0;
+    for (size_t i = 0; i < NumBuckets(); ++i) {
+      const T& element = ElementForIndex(i);
+      if (!emptyfn_.IsEmpty(element)) {
+        size_t ideal_location = IndexForHash(hashfn_(element));
+        if (ideal_location > i) {
+          total += i + NumBuckets() - ideal_location;
+        } else {
+          total += i - ideal_location;
+        }
+      }
+    }
+    return total;
+  }
+
+  // Calculate the current load factor and return it.
+  double CalculateLoadFactor() const {
+    return static_cast<double>(Size()) / static_cast<double>(NumBuckets());
+  }
+
+  // Make sure that everything reinserts in the right spot. Returns the number of errors.
+  size_t Verify() NO_THREAD_SAFETY_ANALYSIS {
+    size_t errors = 0;
+    for (size_t i = 0; i < num_buckets_; ++i) {
+      T& element = data_[i];
+      if (!emptyfn_.IsEmpty(element)) {
+        T temp;
+        emptyfn_.MakeEmpty(temp);
+        std::swap(temp, element);
+        size_t first_slot = FirstAvailableSlot(IndexForHash(hashfn_(temp)));
+        if (i != first_slot) {
+          LOG(ERROR) << "Element " << i << " should be in slot " << first_slot;
+          ++errors;
+        }
+        std::swap(temp, element);
+      }
+    }
+    return errors;
+  }
+
+  double GetMinLoadFactor() const {
+    return min_load_factor_;
+  }
+
+  double GetMaxLoadFactor() const {
+    return max_load_factor_;
+  }
+
+  // Change the load factor of the hash set. If the current load factor is greater than the max
+  // specified, then we resize the hash table storage.
+  void SetLoadFactor(double min_load_factor, double max_load_factor) {
+    DCHECK_LT(min_load_factor, max_load_factor);
+    DCHECK_GT(min_load_factor, 0.0);
+    DCHECK_LT(max_load_factor, 1.0);
+    min_load_factor_ = min_load_factor;
+    max_load_factor_ = max_load_factor;
+    elements_until_expand_ = NumBuckets() * max_load_factor_;
+    // If the current load factor isn't in the range, then resize to the mean of the minimum and
+    // maximum load factor.
+    const double load_factor = CalculateLoadFactor();
+    if (load_factor > max_load_factor_) {
+      Resize(Size() / ((min_load_factor_ + max_load_factor_) * 0.5));
+    }
+  }
+
+  // The hash set expands when Size() reaches ElementsUntilExpand().
+  size_t ElementsUntilExpand() const {
+    return elements_until_expand_;
+  }
+
+  size_t NumBuckets() const {
+    return num_buckets_;
+  }
+
+ private:
+  T& ElementForIndex(size_t index) {
+    DCHECK_LT(index, NumBuckets());
+    DCHECK(data_ != nullptr);
+    return data_[index];
+  }
+
+  const T& ElementForIndex(size_t index) const {
+    DCHECK_LT(index, NumBuckets());
+    DCHECK(data_ != nullptr);
+    return data_[index];
+  }
+
+  size_t IndexForHash(size_t hash) const {
+    // Protect against undefined behavior (division by zero).
+    if (UNLIKELY(num_buckets_ == 0)) {
+      return 0;
+    }
+    return hash % num_buckets_;
+  }
+
+  size_t NextIndex(size_t index) const {
+    if (UNLIKELY(++index >= num_buckets_)) {
+      DCHECK_EQ(index, NumBuckets());
+      return 0;
+    }
+    return index;
+  }
+
+  // Find the hash table slot for an element, or return NumBuckets() if not found.
+  // This value for not found is important so that iterator(this, FindIndex(...)) == end().
+  template <typename K>
+  size_t FindIndex(const K& element, size_t hash) const {
+    // Guard against failing to get an element for a non-existing index.
+    if (UNLIKELY(NumBuckets() == 0)) {
+      return 0;
+    }
+    DCHECK_EQ(hashfn_(element), hash);
+    size_t index = IndexForHash(hash);
+    while (true) {
+      const T& slot = ElementForIndex(index);
+      if (emptyfn_.IsEmpty(slot)) {
+        return NumBuckets();
+      }
+      if (pred_(slot, element)) {
+        return index;
+      }
+      index = NextIndex(index);
+    }
+  }
+
+  bool IsFreeSlot(size_t index) const {
+    return emptyfn_.IsEmpty(ElementForIndex(index));
+  }
+
+  // Allocate a number of buckets.
+  void AllocateStorage(size_t num_buckets) {
+    num_buckets_ = num_buckets;
+    data_ = allocfn_.allocate(num_buckets_);
+    owns_data_ = true;
+    for (size_t i = 0; i < num_buckets_; ++i) {
+      allocfn_.construct(allocfn_.address(data_[i]));
+      emptyfn_.MakeEmpty(data_[i]);
+    }
+  }
+
+  void DeallocateStorage() {
+    if (owns_data_) {
+      for (size_t i = 0; i < NumBuckets(); ++i) {
+        allocfn_.destroy(allocfn_.address(data_[i]));
+      }
+      if (data_ != nullptr) {
+        allocfn_.deallocate(data_, NumBuckets());
+      }
+      owns_data_ = false;
+    }
+    data_ = nullptr;
+    num_buckets_ = 0;
+  }
+
+  // Expand the set based on the load factors.
+  void Expand() {
+    size_t min_index = static_cast<size_t>(Size() / min_load_factor_);
+    // Resize based on the minimum load factor.
+    Resize(min_index);
+  }
+
+  // Expand / shrink the table to the new specified size.
+  void Resize(size_t new_size) {
+    if (new_size < kMinBuckets) {
+      new_size = kMinBuckets;
+    }
+    DCHECK_GE(new_size, Size());
+    T* const old_data = data_;
+    size_t old_num_buckets = num_buckets_;
+    // Reinsert all of the old elements.
+    const bool owned_data = owns_data_;
+    AllocateStorage(new_size);
+    for (size_t i = 0; i < old_num_buckets; ++i) {
+      T& element = old_data[i];
+      if (!emptyfn_.IsEmpty(element)) {
+        data_[FirstAvailableSlot(IndexForHash(hashfn_(element)))] = std::move(element);
+      }
+      if (owned_data) {
+        allocfn_.destroy(allocfn_.address(element));
+      }
+    }
+    if (owned_data) {
+      allocfn_.deallocate(old_data, old_num_buckets);
+    }
+
+    // When we hit elements_until_expand_, we are at the max load factor and must expand again.
+    elements_until_expand_ = NumBuckets() * max_load_factor_;
+  }
+
+  ALWAYS_INLINE size_t FirstAvailableSlot(size_t index) const {
+    DCHECK_LT(index, NumBuckets());  // Don't try to get a slot out of range.
+    size_t non_empty_count = 0;
+    while (!emptyfn_.IsEmpty(data_[index])) {
+      index = NextIndex(index);
+      non_empty_count++;
+      DCHECK_LE(non_empty_count, NumBuckets());  // Don't loop forever.
+    }
+    return index;
+  }
+
+  // Return new offset.
+  template <typename Elem>
+  static size_t WriteToBytes(uint8_t* ptr, size_t offset, Elem n) {
+    DCHECK_ALIGNED(ptr + offset, sizeof(n));
+    if (ptr != nullptr) {
+      *reinterpret_cast<Elem*>(ptr + offset) = n;
+    }
+    return offset + sizeof(n);
+  }
+
+  template <typename Elem>
+  static size_t ReadFromBytes(const uint8_t* ptr, size_t offset, Elem* out) {
+    DCHECK(ptr != nullptr);
+    DCHECK_ALIGNED(ptr + offset, sizeof(*out));
+    *out = *reinterpret_cast<const Elem*>(ptr + offset);
+    return offset + sizeof(*out);
+  }
+
+  Alloc allocfn_;  // Allocator function.
+  HashFn hashfn_;  // Hashing function.
+  EmptyFn emptyfn_;  // IsEmpty/SetEmpty function.
+  Pred pred_;  // Equals function.
+  size_t num_elements_;  // Number of inserted elements.
+  size_t num_buckets_;  // Number of hash table buckets.
+  size_t elements_until_expand_;  // Maximum number of elements until we expand the table.
+  bool owns_data_;  // If we own data_ and are responsible for freeing it.
+  T* data_;  // Backing storage.
+  double min_load_factor_;
+  double max_load_factor_;
+
+  ART_FRIEND_TEST(InternTableTest, CrossHash);
+};
+
+template <class T, class EmptyFn, class HashFn, class Pred, class Alloc>
+void swap(HashSet<T, EmptyFn, HashFn, Pred, Alloc>& lhs,
+          HashSet<T, EmptyFn, HashFn, Pred, Alloc>& rhs) {
+  lhs.swap(rhs);
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_HASH_SET_H_

Bcore/src/main/cpp/base/iteration_range.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_ITERATION_RANGE_H_
+#define ART_LIBARTBASE_BASE_ITERATION_RANGE_H_
+
+#include <iterator>
+
+namespace art_lkchan {
+
+// Helper class that acts as a container for range-based loops, given an iteration
+// range [first, last) defined by two iterators.
+template <typename Iter>
+class IterationRange {
+ public:
+  typedef Iter iterator;
+  typedef typename std::iterator_traits<Iter>::difference_type difference_type;
+  typedef typename std::iterator_traits<Iter>::value_type value_type;
+  typedef typename std::iterator_traits<Iter>::pointer pointer;
+  typedef typename std::iterator_traits<Iter>::reference reference;
+
+  IterationRange(iterator first, iterator last) : first_(first), last_(last) { }
+
+  iterator begin() const { return first_; }
+  iterator end() const { return last_; }
+  iterator cbegin() const { return first_; }
+  iterator cend() const { return last_; }
+
+ private:
+  const iterator first_;
+  const iterator last_;
+};
+
+template <typename Iter>
+inline IterationRange<Iter> MakeIterationRange(const Iter& begin_it, const Iter& end_it) {
+  return IterationRange<Iter>(begin_it, end_it);
+}
+
+template <typename Iter>
+inline IterationRange<Iter> MakeEmptyIterationRange(const Iter& it) {
+  return IterationRange<Iter>(it, it);
+}
+
+template <typename Container>
+inline auto ReverseRange(Container&& c) {
+  typedef typename std::reverse_iterator<decltype(c.begin())> riter;
+  return MakeIterationRange(riter(c.end()), riter(c.begin()));
+}
+
+template <typename T, size_t size>
+inline auto ReverseRange(T (&array)[size]) {
+  return ReverseRange(MakeIterationRange<T*>(array, array+size));
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_ITERATION_RANGE_H_

Bcore/src/main/cpp/base/leb128.h

@@ -0,0 +1,377 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_LEB128_H_
+#define ART_LIBARTBASE_BASE_LEB128_H_
+
+#include <vector>
+
+#include <android-base/logging.h>
+
+#include "base/bit_utils.h"
+#include "base/globals.h"
+#include "base/macros.h"
+
+namespace art_lkchan {
+
+// Reads an unsigned LEB128 value, updating the given pointer to point
+// just past the end of the read value. This function tolerates
+// non-zero high-order bits in the fifth encoded byte.
+static inline uint32_t DecodeUnsignedLeb128(const uint8_t** data) {
+  const uint8_t* ptr = *data;
+  int result = *(ptr++);
+  if (UNLIKELY(result > 0x7f)) {
+    int cur = *(ptr++);
+    result = (result & 0x7f) | ((cur & 0x7f) << 7);
+    if (cur > 0x7f) {
+      cur = *(ptr++);
+      result |= (cur & 0x7f) << 14;
+      if (cur > 0x7f) {
+        cur = *(ptr++);
+        result |= (cur & 0x7f) << 21;
+        if (cur > 0x7f) {
+          // Note: We don't check to see if cur is out of range here,
+          // meaning we tolerate garbage in the four high-order bits.
+          cur = *(ptr++);
+          result |= cur << 28;
+        }
+      }
+    }
+  }
+  *data = ptr;
+  return static_cast<uint32_t>(result);
+}
+
+static inline uint32_t DecodeUnsignedLeb128WithoutMovingCursor(const uint8_t* data) {
+  return DecodeUnsignedLeb128(&data);
+}
+
+static inline bool DecodeUnsignedLeb128Checked(const uint8_t** data,
+                                               const void* end,
+                                               uint32_t* out) {
+  const uint8_t* ptr = *data;
+  if (ptr >= end) {
+    return false;
+  }
+  int result = *(ptr++);
+  if (UNLIKELY(result > 0x7f)) {
+    if (ptr >= end) {
+      return false;
+    }
+    int cur = *(ptr++);
+    result = (result & 0x7f) | ((cur & 0x7f) << 7);
+    if (cur > 0x7f) {
+      if (ptr >= end) {
+        return false;
+      }
+      cur = *(ptr++);
+      result |= (cur & 0x7f) << 14;
+      if (cur > 0x7f) {
+        if (ptr >= end) {
+          return false;
+        }
+        cur = *(ptr++);
+        result |= (cur & 0x7f) << 21;
+        if (cur > 0x7f) {
+          if (ptr >= end) {
+            return false;
+          }
+          // Note: We don't check to see if cur is out of range here,
+          // meaning we tolerate garbage in the four high-order bits.
+          cur = *(ptr++);
+          result |= cur << 28;
+        }
+      }
+    }
+  }
+  *data = ptr;
+  *out = static_cast<uint32_t>(result);
+  return true;
+}
+
+// Reads an unsigned LEB128 + 1 value. updating the given pointer to point
+// just past the end of the read value. This function tolerates
+// non-zero high-order bits in the fifth encoded byte.
+// It is possible for this function to return -1.
+static inline int32_t DecodeUnsignedLeb128P1(const uint8_t** data) {
+  return DecodeUnsignedLeb128(data) - 1;
+}
+
+// Reads a signed LEB128 value, updating the given pointer to point
+// just past the end of the read value. This function tolerates
+// non-zero high-order bits in the fifth encoded byte.
+static inline int32_t DecodeSignedLeb128(const uint8_t** data) {
+  const uint8_t* ptr = *data;
+  int32_t result = *(ptr++);
+  if (result <= 0x7f) {
+    result = (result << 25) >> 25;
+  } else {
+    int cur = *(ptr++);
+    result = (result & 0x7f) | ((cur & 0x7f) << 7);
+    if (cur <= 0x7f) {
+      result = (result << 18) >> 18;
+    } else {
+      cur = *(ptr++);
+      result |= (cur & 0x7f) << 14;
+      if (cur <= 0x7f) {
+        result = (result << 11) >> 11;
+      } else {
+        cur = *(ptr++);
+        result |= (cur & 0x7f) << 21;
+        if (cur <= 0x7f) {
+          result = (result << 4) >> 4;
+        } else {
+          // Note: We don't check to see if cur is out of range here,
+          // meaning we tolerate garbage in the four high-order bits.
+          cur = *(ptr++);
+          result |= cur << 28;
+        }
+      }
+    }
+  }
+  *data = ptr;
+  return result;
+}
+
+static inline bool DecodeSignedLeb128Checked(const uint8_t** data,
+                                             const void* end,
+                                             int32_t* out) {
+  const uint8_t* ptr = *data;
+  if (ptr >= end) {
+    return false;
+  }
+  int32_t result = *(ptr++);
+  if (result <= 0x7f) {
+    result = (result << 25) >> 25;
+  } else {
+    if (ptr >= end) {
+      return false;
+    }
+    int cur = *(ptr++);
+    result = (result & 0x7f) | ((cur & 0x7f) << 7);
+    if (cur <= 0x7f) {
+      result = (result << 18) >> 18;
+    } else {
+      if (ptr >= end) {
+        return false;
+      }
+      cur = *(ptr++);
+      result |= (cur & 0x7f) << 14;
+      if (cur <= 0x7f) {
+        result = (result << 11) >> 11;
+      } else {
+        if (ptr >= end) {
+          return false;
+        }
+        cur = *(ptr++);
+        result |= (cur & 0x7f) << 21;
+        if (cur <= 0x7f) {
+          result = (result << 4) >> 4;
+        } else {
+          if (ptr >= end) {
+            return false;
+          }
+          // Note: We don't check to see if cur is out of range here,
+          // meaning we tolerate garbage in the four high-order bits.
+          cur = *(ptr++);
+          result |= cur << 28;
+        }
+      }
+    }
+  }
+  *data = ptr;
+  *out = static_cast<uint32_t>(result);
+  return true;
+}
+
+// Returns the number of bytes needed to encode the value in unsigned LEB128.
+static inline uint32_t UnsignedLeb128Size(uint32_t data) {
+  // bits_to_encode = (data != 0) ? 32 - CLZ(x) : 1  // 32 - CLZ(data | 1)
+  // bytes = ceil(bits_to_encode / 7.0);             // (6 + bits_to_encode) / 7
+  uint32_t x = 6 + 32 - CLZ(data | 1U);
+  // Division by 7 is done by (x * 37) >> 8 where 37 = ceil(256 / 7).
+  // This works for 0 <= x < 256 / (7 * 37 - 256), i.e. 0 <= x <= 85.
+  return (x * 37) >> 8;
+}
+
+static inline bool IsLeb128Terminator(const uint8_t* ptr) {
+  return *ptr <= 0x7f;
+}
+
+// Returns the first byte of a Leb128 value assuming that:
+// (1) `end_ptr` points to the first byte after the Leb128 value, and
+// (2) there is another Leb128 value before this one.
+template <typename T>
+static inline T* ReverseSearchUnsignedLeb128(T* end_ptr) {
+  static_assert(std::is_same<typename std::remove_const<T>::type, uint8_t>::value,
+                "T must be a uint8_t");
+  T* ptr = end_ptr;
+
+  // Move one byte back, check that this is the terminating byte.
+  ptr--;
+  DCHECK(IsLeb128Terminator(ptr));
+
+  // Keep moving back while the previous byte is not a terminating byte.
+  // Fail after reading five bytes in case there isn't another Leb128 value
+  // before this one.
+  while (!IsLeb128Terminator(ptr - 1)) {
+    ptr--;
+    DCHECK_LE(static_cast<ptrdiff_t>(end_ptr - ptr), 5);
+  }
+
+  return ptr;
+}
+
+// Returns the number of bytes needed to encode the value in unsigned LEB128.
+static inline uint32_t SignedLeb128Size(int32_t data) {
+  // Like UnsignedLeb128Size(), but we need one bit beyond the highest bit that differs from sign.
+  data = data ^ (data >> 31);
+  uint32_t x = 1 /* we need to encode the sign bit */ + 6 + 32 - CLZ(data | 1U);
+  return (x * 37) >> 8;
+}
+
+static inline uint8_t* EncodeUnsignedLeb128(uint8_t* dest, uint32_t value) {
+  uint8_t out = value & 0x7f;
+  value >>= 7;
+  while (value != 0) {
+    *dest++ = out | 0x80;
+    out = value & 0x7f;
+    value >>= 7;
+  }
+  *dest++ = out;
+  return dest;
+}
+
+template <typename Vector>
+static inline void EncodeUnsignedLeb128(Vector* dest, uint32_t value) {
+  static_assert(std::is_same<typename Vector::value_type, uint8_t>::value, "Invalid value type");
+  uint8_t out = value & 0x7f;
+  value >>= 7;
+  while (value != 0) {
+    dest->push_back(out | 0x80);
+    out = value & 0x7f;
+    value >>= 7;
+  }
+  dest->push_back(out);
+}
+
+// Overwrite encoded Leb128 with a new value. The new value must be less than
+// or equal to the old value to ensure that it fits the allocated space.
+static inline void UpdateUnsignedLeb128(uint8_t* dest, uint32_t value) {
+  const uint8_t* old_end = dest;
+  uint32_t old_value = DecodeUnsignedLeb128(&old_end);
+  DCHECK_LE(UnsignedLeb128Size(value), UnsignedLeb128Size(old_value));
+  for (uint8_t* end = EncodeUnsignedLeb128(dest, value); end < old_end; end++) {
+    // Use longer encoding than necessary to fill the allocated space.
+    end[-1] |= 0x80;
+    end[0] = 0;
+  }
+}
+
+static inline uint8_t* EncodeSignedLeb128(uint8_t* dest, int32_t value) {
+  uint32_t extra_bits = static_cast<uint32_t>(value ^ (value >> 31)) >> 6;
+  uint8_t out = value & 0x7f;
+  while (extra_bits != 0u) {
+    *dest++ = out | 0x80;
+    value >>= 7;
+    out = value & 0x7f;
+    extra_bits >>= 7;
+  }
+  *dest++ = out;
+  return dest;
+}
+
+template<typename Vector>
+static inline void EncodeSignedLeb128(Vector* dest, int32_t value) {
+  static_assert(std::is_same<typename Vector::value_type, uint8_t>::value, "Invalid value type");
+  uint32_t extra_bits = static_cast<uint32_t>(value ^ (value >> 31)) >> 6;
+  uint8_t out = value & 0x7f;
+  while (extra_bits != 0u) {
+    dest->push_back(out | 0x80);
+    value >>= 7;
+    out = value & 0x7f;
+    extra_bits >>= 7;
+  }
+  dest->push_back(out);
+}
+
+// An encoder that pushes int32_t/uint32_t data onto the given std::vector.
+template <typename Vector = std::vector<uint8_t>>
+class Leb128Encoder {
+  static_assert(std::is_same<typename Vector::value_type, uint8_t>::value, "Invalid value type");
+
+ public:
+  explicit Leb128Encoder(Vector* data) : data_(data) {
+    DCHECK(data != nullptr);
+  }
+
+  void Reserve(uint32_t size) {
+    data_->reserve(size);
+  }
+
+  void PushBackUnsigned(uint32_t value) {
+    EncodeUnsignedLeb128(data_, value);
+  }
+
+  template<typename It>
+  void InsertBackUnsigned(It cur, It end) {
+    for (; cur != end; ++cur) {
+      PushBackUnsigned(*cur);
+    }
+  }
+
+  void PushBackSigned(int32_t value) {
+    EncodeSignedLeb128(data_, value);
+  }
+
+  template<typename It>
+  void InsertBackSigned(It cur, It end) {
+    for (; cur != end; ++cur) {
+      PushBackSigned(*cur);
+    }
+  }
+
+  const Vector& GetData() const {
+    return *data_;
+  }
+
+ protected:
+  Vector* const data_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(Leb128Encoder);
+};
+
+// An encoder with an API similar to vector<uint32_t> where the data is captured in ULEB128 format.
+template <typename Vector = std::vector<uint8_t>>
+class Leb128EncodingVector FINAL : private Vector,
+                                   public Leb128Encoder<Vector> {
+  static_assert(std::is_same<typename Vector::value_type, uint8_t>::value, "Invalid value type");
+
+ public:
+  Leb128EncodingVector() : Leb128Encoder<Vector>(this) { }
+
+  explicit Leb128EncodingVector(const typename Vector::allocator_type& alloc)
+    : Vector(alloc),
+      Leb128Encoder<Vector>(this) { }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(Leb128EncodingVector);
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_LEB128_H_

Bcore/src/main/cpp/base/macros.h

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_MACROS_H_
+#define ART_LIBARTBASE_BASE_MACROS_H_
+
+#include <stddef.h>  // for size_t
+#include <unistd.h>  // for TEMP_FAILURE_RETRY
+
+#include "android-base/macros.h"
+#include "android-base/thread_annotations.h"
+
+#define OVERRIDE override
+#define FINAL final
+
+// Declare a friend relationship in a class with a test. Used rather that FRIEND_TEST to avoid
+// globally importing gtest/gtest.h into the main ART header files.
+#define ART_FRIEND_TEST(test_set_name, individual_test)\
+friend class test_set_name##_##individual_test##_Test
+
+// Declare a friend relationship in a class with a typed test.
+#define ART_FRIEND_TYPED_TEST(test_set_name, individual_test)\
+template<typename T> ART_FRIEND_TEST(test_set_name, individual_test)
+
+// A macro to disallow new and delete operators for a class. It goes in the private: declarations.
+// NOTE: Providing placement new (and matching delete) for constructing container elements.
+#define DISALLOW_ALLOCATION() \
+  public: \
+    NO_RETURN ALWAYS_INLINE void operator delete(void*, size_t) { UNREACHABLE(); } \
+    ALWAYS_INLINE void* operator new(size_t, void* ptr) noexcept { return ptr; } \
+    ALWAYS_INLINE void operator delete(void*, void*) noexcept { } \
+  private: \
+    void* operator new(size_t) = delete  // NOLINT
+
+#define SIZEOF_MEMBER(t, f) sizeof((reinterpret_cast<t*>(4096))->f)  // NOLINT
+
+#define OFFSETOF_MEMBER(t, f) \
+  (reinterpret_cast<uintptr_t>(&reinterpret_cast<t*>(16)->f) - static_cast<uintptr_t>(16u))  // NOLINT
+
+#define OFFSETOF_MEMBERPTR(t, f) \
+  (reinterpret_cast<uintptr_t>(&(reinterpret_cast<t*>(16)->*f)) - static_cast<uintptr_t>(16))  // NOLINT
+
+#define PACKED(x) __attribute__ ((__aligned__(x), __packed__))
+
+// Stringify the argument.
+#define QUOTE(x) #x
+#define STRINGIFY(x) QUOTE(x)
+
+// Append tokens after evaluating.
+#define APPEND_TOKENS_AFTER_EVAL_2(a, b) a ## b
+#define APPEND_TOKENS_AFTER_EVAL(a, b) APPEND_TOKENS_AFTER_EVAL_2(a, b)
+
+#ifndef NDEBUG
+#define ALWAYS_INLINE
+#else
+#define ALWAYS_INLINE  __attribute__ ((always_inline))
+#endif
+
+// clang doesn't like attributes on lambda functions. It would be nice to say:
+//   #define ALWAYS_INLINE_LAMBDA ALWAYS_INLINE
+#define ALWAYS_INLINE_LAMBDA
+
+#define NO_INLINE __attribute__ ((noinline))
+
+#if defined (__APPLE__)
+#define HOT_ATTR
+#define COLD_ATTR
+#else
+#define HOT_ATTR __attribute__ ((hot))
+#define COLD_ATTR __attribute__ ((cold))
+#endif
+
+#define PURE __attribute__ ((__pure__))
+
+// Define that a position within code is unreachable, for example:
+//   int foo () { LOG(FATAL) << "Don't call me"; UNREACHABLE(); }
+// without the UNREACHABLE a return statement would be necessary.
+#define UNREACHABLE  __builtin_unreachable
+
+// Add the C++11 noreturn attribute.
+#define NO_RETURN [[ noreturn ]]  // NOLINT[whitespace/braces] [5]
+
+// Annotalysis thread-safety analysis support. Things that are not in base.
+
+#define LOCKABLE CAPABILITY("mutex")
+#define SHARED_LOCKABLE SHARED_CAPABILITY("mutex")
+
+#endif  // ART_LIBARTBASE_BASE_MACROS_H_

Bcore/src/main/cpp/base/memory.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BASE_MEMORY_H
+#define ANDROID_BASE_MEMORY_H
+
+namespace android_lkchan {
+namespace base {
+
+// Use memcpy for access to unaligned data on targets with alignment
+// restrictions.  The compiler will generate appropriate code to access these
+// structures without generating alignment exceptions.
+template <typename T>
+static inline T get_unaligned(const void* address) {
+  T result;
+  memcpy(&result, address, sizeof(T));
+  return result;
+}
+
+template <typename T>
+static inline void put_unaligned(void* address, T v) {
+  memcpy(address, &v, sizeof(T));
+}
+
+} // namespace base
+} // namespace android_lkchan
+
+#endif  // ANDROID_BASE_MEMORY_H

Bcore/src/main/cpp/base/memory_tool.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
+#define ART_LIBARTBASE_BASE_MEMORY_TOOL_H_
+
+#include <stddef.h>
+
+#if !defined(__has_feature)
+#define __has_feature(x) 0
+#endif
+
+#if __has_feature(address_sanitizer)
+
+#include <sanitizer/asan_interface.h>
+#define ADDRESS_SANITIZER
+
+#ifdef ART_ENABLE_ADDRESS_SANITIZER
+#define MEMORY_TOOL_MAKE_NOACCESS(p, s) __asan_poison_memory_region(p, s)
+#define MEMORY_TOOL_MAKE_UNDEFINED(p, s) __asan_unpoison_memory_region(p, s)
+#define MEMORY_TOOL_MAKE_DEFINED(p, s) __asan_unpoison_memory_region(p, s)
+constexpr bool kMemoryToolIsAvailable = true;
+#else
+#define MEMORY_TOOL_MAKE_NOACCESS(p, s) do { (void)(p); (void)(s); } while (0)
+#define MEMORY_TOOL_MAKE_UNDEFINED(p, s) do { (void)(p); (void)(s); } while (0)
+#define MEMORY_TOOL_MAKE_DEFINED(p, s) do { (void)(p); (void)(s); } while (0)
+constexpr bool kMemoryToolIsAvailable = false;
+#endif
+
+extern "C" void __asan_handle_no_return();
+
+#define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
+#define MEMORY_TOOL_HANDLE_NO_RETURN __asan_handle_no_return()
+#define RUNNING_ON_MEMORY_TOOL 1U
+constexpr bool kMemoryToolIsValgrind = false;
+constexpr bool kMemoryToolDetectsLeaks = true;
+constexpr bool kMemoryToolAddsRedzones = true;
+constexpr size_t kMemoryToolStackGuardSizeScale = 2;
+
+#else
+
+/*
+ * chensenhua
+#include <memcheck/memcheck.h>
+#include <valgrind.h>
+#define MEMORY_TOOL_MAKE_NOACCESS(p, s) VALGRIND_MAKE_MEM_NOACCESS(p, s)
+#define MEMORY_TOOL_MAKE_UNDEFINED(p, s) VALGRIND_MAKE_MEM_UNDEFINED(p, s)
+#define MEMORY_TOOL_MAKE_DEFINED(p, s) VALGRIND_MAKE_MEM_DEFINED(p, s)
+#define ATTRIBUTE_NO_SANITIZE_ADDRESS
+#define MEMORY_TOOL_HANDLE_NO_RETURN do { } while (0)
+#define RUNNING_ON_MEMORY_TOOL RUNNING_ON_VALGRIND
+constexpr bool kMemoryToolIsAvailable = true;
+constexpr bool kMemoryToolIsValgrind = true;
+constexpr bool kMemoryToolDetectsLeaks = true;
+constexpr bool kMemoryToolAddsRedzones = true;
+constexpr size_t kMemoryToolStackGuardSizeScale = 1;
+*/
+
+#endif
+
+#endif  // ART_LIBARTBASE_BASE_MEMORY_TOOL_H_

Bcore/src/main/cpp/base/safe_map.h

@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_SAFE_MAP_H_
+#define ART_LIBARTBASE_BASE_SAFE_MAP_H_
+
+#include <map>
+#include <memory>
+#include <type_traits>
+
+#include <android-base/logging.h>
+
+namespace art_lkchan {
+
+// Equivalent to std::map, but without operator[] and its bug-prone semantics (in particular,
+// the implicit insertion of a default-constructed value on failed lookups).
+template <typename K, typename V, typename Comparator = std::less<K>,
+          typename Allocator = std::allocator<std::pair<const K, V>>>
+class SafeMap {
+ private:
+  typedef SafeMap<K, V, Comparator, Allocator> Self;
+
+ public:
+  typedef typename ::std::map<K, V, Comparator, Allocator>::key_compare key_compare;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::value_compare value_compare;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::allocator_type allocator_type;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::iterator iterator;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::const_iterator const_iterator;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::size_type size_type;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::key_type key_type;
+  typedef typename ::std::map<K, V, Comparator, Allocator>::value_type value_type;
+
+  SafeMap() = default;
+  SafeMap(const SafeMap&) = default;
+  SafeMap(SafeMap&&) = default;
+  explicit SafeMap(const key_compare& cmp, const allocator_type& allocator = allocator_type())
+    : map_(cmp, allocator) {
+  }
+
+  Self& operator=(const Self& rhs) {
+    map_ = rhs.map_;
+    return *this;
+  }
+
+  allocator_type get_allocator() const { return map_.get_allocator(); }
+  key_compare key_comp() const { return map_.key_comp(); }
+  value_compare value_comp() const { return map_.value_comp(); }
+
+  iterator begin() { return map_.begin(); }
+  const_iterator begin() const { return map_.begin(); }
+  iterator end() { return map_.end(); }
+  const_iterator end() const { return map_.end(); }
+
+  bool empty() const { return map_.empty(); }
+  size_type size() const { return map_.size(); }
+
+  void swap(Self& other) { map_.swap(other.map_); }
+  void clear() { map_.clear(); }
+  iterator erase(iterator it) { return map_.erase(it); }
+  size_type erase(const K& k) { return map_.erase(k); }
+
+  iterator find(const K& k) { return map_.find(k); }
+  const_iterator find(const K& k) const { return map_.find(k); }
+
+  iterator lower_bound(const K& k) { return map_.lower_bound(k); }
+  const_iterator lower_bound(const K& k) const { return map_.lower_bound(k); }
+
+  iterator upper_bound(const K& k) { return map_.upper_bound(k); }
+  const_iterator upper_bound(const K& k) const { return map_.upper_bound(k); }
+
+  size_type count(const K& k) const { return map_.count(k); }
+
+  // Note that unlike std::map's operator[], this doesn't return a reference to the value.
+  V Get(const K& k) const {
+    const_iterator it = map_.find(k);
+    DCHECK(it != map_.end());
+    return it->second;
+  }
+
+  // Used to insert a new mapping.
+  iterator Put(const K& k, const V& v) {
+    std::pair<iterator, bool> result = map_.emplace(k, v);
+    DCHECK(result.second);  // Check we didn't accidentally overwrite an existing value.
+    return result.first;
+  }
+  iterator Put(const K& k, V&& v) {
+    std::pair<iterator, bool> result = map_.emplace(k, std::move(v));
+    DCHECK(result.second);  // Check we didn't accidentally overwrite an existing value.
+    return result.first;
+  }
+
+  // Used to insert a new mapping at a known position for better performance.
+  iterator PutBefore(const_iterator pos, const K& k, const V& v) {
+    // Check that we're using the correct position and the key is not in the map.
+    DCHECK(pos == map_.end() || map_.key_comp()(k, pos->first));
+    DCHECK(pos == map_.begin() || map_.key_comp()((--const_iterator(pos))->first, k));
+    return map_.emplace_hint(pos, k, v);
+  }
+  iterator PutBefore(const_iterator pos, const K& k, V&& v) {
+    // Check that we're using the correct position and the key is not in the map.
+    DCHECK(pos == map_.end() || map_.key_comp()(k, pos->first));
+    DCHECK(pos == map_.begin() || map_.key_comp()((--const_iterator(pos))->first, k));
+    return map_.emplace_hint(pos, k, std::move(v));
+  }
+
+  // Used to insert a new mapping or overwrite an existing mapping. Note that if the value type
+  // of this container is a pointer, any overwritten pointer will be lost and if this container
+  // was the owner, you have a leak. Returns iterator pointing to the new or overwritten entry.
+  iterator Overwrite(const K& k, const V& v) {
+    std::pair<iterator, bool> result = map_.insert(std::make_pair(k, v));
+    if (!result.second) {
+      // Already there - update the value for the existing key
+      result.first->second = v;
+    }
+    return result.first;
+  }
+
+  template <typename CreateFn>
+  V GetOrCreate(const K& k, CreateFn create) {
+    static_assert(std::is_same<V, typename std::result_of<CreateFn()>::type>::value,
+                  "Argument `create` should return a value of type V.");
+    auto lb = lower_bound(k);
+    if (lb != end() && !key_comp()(k, lb->first)) {
+      return lb->second;
+    }
+    auto it = PutBefore(lb, k, create());
+    return it->second;
+  }
+
+  iterator FindOrAdd(const K& k, const V& v) {
+    iterator it = find(k);
+    return it == end() ? Put(k, v) : it;
+  }
+
+  iterator FindOrAdd(const K& k) {
+    iterator it = find(k);
+    return it == end() ? Put(k, V()) : it;
+  }
+
+  bool Equals(const Self& rhs) const {
+    return map_ == rhs.map_;
+  }
+
+  template <class... Args>
+  std::pair<iterator, bool> emplace(Args&&... args) {
+    return map_.emplace(std::forward<Args>(args)...);
+  }
+
+ private:
+  ::std::map<K, V, Comparator, Allocator> map_;
+};
+
+template <typename K, typename V, typename Comparator, typename Allocator>
+bool operator==(const SafeMap<K, V, Comparator, Allocator>& lhs,
+                const SafeMap<K, V, Comparator, Allocator>& rhs) {
+  return lhs.Equals(rhs);
+}
+
+template <typename K, typename V, typename Comparator, typename Allocator>
+bool operator!=(const SafeMap<K, V, Comparator, Allocator>& lhs,
+                const SafeMap<K, V, Comparator, Allocator>& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_SAFE_MAP_H_

Bcore/src/main/cpp/base/stl_util.h

@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_STL_UTIL_H_
+#define ART_LIBARTBASE_BASE_STL_UTIL_H_
+
+#include <algorithm>
+#include <set>
+#include <sstream>
+
+#include <android-base/logging.h>
+
+namespace art_lkchan {
+
+// STLDeleteContainerPointers()
+//  For a range within a container of pointers, calls delete
+//  (non-array version) on these pointers.
+// NOTE: for these three functions, we could just implement a DeleteObject
+// functor and then call for_each() on the range and functor, but this
+// requires us to pull in all of algorithm.h, which seems expensive.
+// For hash_[multi]set, it is important that this deletes behind the iterator
+// because the hash_set may call the hash function on the iterator when it is
+// advanced, which could result in the hash function trying to deference a
+// stale pointer.
+template <class ForwardIterator>
+void STLDeleteContainerPointers(ForwardIterator begin,
+                                ForwardIterator end) {
+  while (begin != end) {
+    ForwardIterator temp = begin;
+    ++begin;
+    delete *temp;
+  }
+}
+
+// STLDeleteElements() deletes all the elements in an STL container and clears
+// the container.  This function is suitable for use with a vector, set,
+// hash_set, or any other STL container which defines sensible begin(), end(),
+// and clear() methods.
+//
+// If container is null, this function is a no-op.
+//
+// As an alternative to calling STLDeleteElements() directly, consider
+// using a container of std::unique_ptr, which ensures that your container's
+// elements are deleted when the container goes out of scope.
+template <class T>
+void STLDeleteElements(T *container) {
+  if (container != nullptr) {
+    STLDeleteContainerPointers(container->begin(), container->end());
+    container->clear();
+  }
+}
+
+// Given an STL container consisting of (key, value) pairs, STLDeleteValues
+// deletes all the "value" components and clears the container.  Does nothing
+// in the case it's given a null pointer.
+template <class T>
+void STLDeleteValues(T *v) {
+  if (v != nullptr) {
+    for (typename T::iterator i = v->begin(); i != v->end(); ++i) {
+      delete i->second;
+    }
+    v->clear();
+  }
+}
+
+// Deleter using free() for use with std::unique_ptr<>. See also UniqueCPtr<> below.
+struct FreeDelete {
+  // NOTE: Deleting a const object is valid but free() takes a non-const pointer.
+  void operator()(const void* ptr) const {
+    free(const_cast<void*>(ptr));
+  }
+};
+
+// Alias for std::unique_ptr<> that uses the C function free() to delete objects.
+template <typename T>
+using UniqueCPtr = std::unique_ptr<T, FreeDelete>;
+
+// Find index of the first element with the specified value known to be in the container.
+template <typename Container, typename T>
+size_t IndexOfElement(const Container& container, const T& value) {
+  auto it = std::find(container.begin(), container.end(), value);
+  DCHECK(it != container.end());  // Must exist.
+  return std::distance(container.begin(), it);
+}
+
+// Remove the first element with the specified value known to be in the container.
+template <typename Container, typename T>
+void RemoveElement(Container& container, const T& value) {
+  auto it = std::find(container.begin(), container.end(), value);
+  DCHECK(it != container.end());  // Must exist.
+  container.erase(it);
+}
+
+// Replace the first element with the specified old_value known to be in the container.
+template <typename Container, typename T>
+void ReplaceElement(Container& container, const T& old_value, const T& new_value) {
+  auto it = std::find(container.begin(), container.end(), old_value);
+  DCHECK(it != container.end());  // Must exist.
+  *it = new_value;
+}
+
+// Search for an element with the specified value and return true if it was found, false otherwise.
+template <typename Container, typename T>
+bool ContainsElement(const Container& container, const T& value, size_t start_pos = 0u) {
+  DCHECK_LE(start_pos, container.size());
+  auto start = container.begin();
+  std::advance(start, start_pos);
+  auto it = std::find(start, container.end(), value);
+  return it != container.end();
+}
+
+// 32-bit FNV-1a hash function suitable for std::unordered_map.
+// It can be used with any container which works with range-based for loop.
+// See http://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function
+template <typename Vector>
+struct FNVHash {
+  size_t operator()(const Vector& vector) const {
+    uint32_t hash = 2166136261u;
+    for (const auto& value : vector) {
+      hash = (hash ^ value) * 16777619u;
+    }
+    return hash;
+  }
+};
+
+// Merge `other` entries into `to_update`.
+template <typename T>
+static inline void MergeSets(std::set<T>& to_update, const std::set<T>& other) {
+  to_update.insert(other.begin(), other.end());
+}
+
+// Returns a copy of the passed vector that doesn't memory-own its entries.
+template <typename T>
+static inline std::vector<T*> MakeNonOwningPointerVector(const std::vector<std::unique_ptr<T>>& src) {
+  std::vector<T*> result;
+  result.reserve(src.size());
+  for (const std::unique_ptr<T>& t : src) {
+    result.push_back(t.get());
+  }
+  return result;
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_STL_UTIL_H_

Bcore/src/main/cpp/base/stl_util_identity.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_STL_UTIL_IDENTITY_H_
+#define ART_LIBARTBASE_BASE_STL_UTIL_IDENTITY_H_
+
+namespace art_lkchan {
+
+// Use to suppress type deduction for a function argument.
+// See std::identity<> for more background:
+// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1856.html#20.2.2 - move/forward helpers
+//
+// e.g. "template <typename X> void bar(identity<X>::type foo);
+//     bar(5); // compilation error
+//     bar<int>(5); // ok
+// or "template <typename T> void foo(T* x, typename Identity<T*>::type y);
+//     Base b;
+//     Derived d;
+//     foo(&b, &d);  // Use implicit Derived* -> Base* conversion.
+// If T was deduced from both &b and &d, there would be a mismatch, i.e. deduction failure.
+template <typename T>
+struct Identity {
+  using type = T;
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_STL_UTIL_IDENTITY_H_

Bcore/src/main/cpp/base/stringpiece.h

@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_STRINGPIECE_H_
+#define ART_LIBARTBASE_BASE_STRINGPIECE_H_
+
+#include <string.h>
+#include <string>
+
+#include <android-base/logging.h>
+
+namespace art_lkchan {
+
+// A string-like object that points to a sized piece of memory.
+//
+// Functions or methods may use const StringPiece& parameters to accept either
+// a "const char*" or a "string" value that will be implicitly converted to
+// a StringPiece.  The implicit conversion means that it is often appropriate
+// to include this .h file in other files rather than forward-declaring
+// StringPiece as would be appropriate for most other Google classes.
+class StringPiece {
+ public:
+  // standard STL container boilerplate
+  typedef char value_type;
+  typedef const char* pointer;
+  typedef const char& reference;
+  typedef const char& const_reference;
+  typedef size_t size_type;
+  typedef ptrdiff_t difference_type;
+  static constexpr size_type npos = size_type(-1);
+  typedef const char* const_iterator;
+  typedef const char* iterator;
+  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+  typedef std::reverse_iterator<iterator> reverse_iterator;
+
+  // We provide non-explicit singleton constructors so users can pass
+  // in a "const char*" or a "string" wherever a "StringPiece" is
+  // expected.
+  StringPiece() : ptr_(nullptr), length_(0) { }
+  StringPiece(const char* str)  // NOLINT implicit constructor desired
+    : ptr_(str), length_((str == nullptr) ? 0 : strlen(str)) { }
+  StringPiece(const std::string& str)  // NOLINT implicit constructor desired
+    : ptr_(str.data()), length_(str.size()) { }
+  StringPiece(const char* offset, size_t len) : ptr_(offset), length_(len) { }
+
+  // data() may return a pointer to a buffer with embedded NULs, and the
+  // returned buffer may or may not be null terminated.  Therefore it is
+  // typically a mistake to pass data() to a routine that expects a NUL
+  // terminated string.
+  const char* data() const { return ptr_; }
+  size_type size() const { return length_; }
+  size_type length() const { return length_; }
+  bool empty() const { return length_ == 0; }
+
+  void clear() {
+    ptr_ = nullptr;
+    length_ = 0;
+  }
+  void set(const char* data_in, size_type len) {
+    ptr_ = data_in;
+    length_ = len;
+  }
+  void set(const char* str) {
+    ptr_ = str;
+    if (str != nullptr) {
+      length_ = strlen(str);
+    } else {
+      length_ = 0;
+    }
+  }
+  void set(const void* data_in, size_type len) {
+    ptr_ = reinterpret_cast<const char*>(data_in);
+    length_ = len;
+  }
+
+  char operator[](size_type i) const {
+    DCHECK_LT(i, length_);
+    return ptr_[i];
+  }
+
+  void remove_prefix(size_type n) {
+    ptr_ += n;
+    length_ -= n;
+  }
+
+  void remove_suffix(size_type n) {
+    length_ -= n;
+  }
+
+  int compare(const StringPiece& x) const {
+    int r = memcmp(ptr_, x.ptr_, std::min(length_, x.length_));
+    if (r == 0) {
+      if (length_ < x.length_) r = -1;
+      else if (length_ > x.length_) r = +1;
+    }
+    return r;
+  }
+
+  std::string as_string() const {
+    return std::string(data(), size());
+  }
+  // We also define ToString() here, since many other string-like
+  // interfaces name the routine that converts to a C++ string
+  // "ToString", and it's confusing to have the method that does that
+  // for a StringPiece be called "as_string()".  We also leave the
+  // "as_string()" method defined here for existing code.
+  std::string ToString() const {
+    return std::string(data(), size());
+  }
+
+  void CopyToString(std::string* target) const {
+    target->assign(ptr_, length_);
+  }
+
+  void AppendToString(std::string* target) const;
+
+  // Does "this" start with "x"
+  bool starts_with(const StringPiece& x) const {
+    return ((length_ >= x.length_) &&
+            (memcmp(ptr_, x.ptr_, x.length_) == 0));
+  }
+
+  // Does "this" end with "x"
+  bool ends_with(const StringPiece& x) const {
+    return ((length_ >= x.length_) &&
+            (memcmp(ptr_ + (length_-x.length_), x.ptr_, x.length_) == 0));
+  }
+
+  iterator begin() const { return ptr_; }
+  iterator end() const { return ptr_ + length_; }
+  const_reverse_iterator rbegin() const {
+    return const_reverse_iterator(ptr_ + length_);
+  }
+  const_reverse_iterator rend() const {
+    return const_reverse_iterator(ptr_);
+  }
+
+  size_type copy(char* buf, size_type n, size_type pos = 0) const {
+    size_type ret = std::min(length_ - pos, n);
+    memcpy(buf, ptr_ + pos, ret);
+    return ret;
+  }
+
+  size_type find(const StringPiece& s, size_type pos = 0) const {
+    if (length_ == 0 || pos > static_cast<size_type>(length_)) {
+      return npos;
+    }
+    const char* result = std::search(ptr_ + pos, ptr_ + length_, s.ptr_, s.ptr_ + s.length_);
+    const size_type xpos = result - ptr_;
+    return xpos + s.length_ <= length_ ? xpos : npos;
+  }
+
+  size_type find(char c, size_type pos = 0) const {
+    if (length_ == 0 || pos >= length_) {
+      return npos;
+    }
+    const char* result = std::find(ptr_ + pos, ptr_ + length_, c);
+    return result != ptr_ + length_ ? result - ptr_ : npos;
+  }
+
+  size_type rfind(const StringPiece& s, size_type pos = npos) const {
+    if (length_ < s.length_) return npos;
+    const size_t ulen = length_;
+    if (s.length_ == 0) return std::min(ulen, pos);
+
+    const char* last = ptr_ + std::min(ulen - s.length_, pos) + s.length_;
+    const char* result = std::find_end(ptr_, last, s.ptr_, s.ptr_ + s.length_);
+    return result != last ? result - ptr_ : npos;
+  }
+
+  size_type rfind(char c, size_type pos = npos) const {
+    if (length_ == 0) return npos;
+    for (int i = std::min(pos, static_cast<size_type>(length_ - 1));
+         i >= 0; --i) {
+      if (ptr_[i] == c) {
+        return i;
+      }
+    }
+    return npos;
+  }
+
+  StringPiece substr(size_type pos, size_type n = npos) const {
+    if (pos > static_cast<size_type>(length_)) pos = length_;
+    if (n > length_ - pos) n = length_ - pos;
+    return StringPiece(ptr_ + pos, n);
+  }
+
+  int Compare(const StringPiece& rhs) const {
+    const int r = memcmp(data(), rhs.data(), std::min(size(), rhs.size()));
+    if (r != 0) {
+      return r;
+    }
+    if (size() < rhs.size()) {
+      return -1;
+    } else if (size() > rhs.size()) {
+      return 1;
+    }
+    return 0;
+  }
+
+ private:
+  // Pointer to char data, not necessarily zero terminated.
+  const char* ptr_;
+  // Length of data.
+  size_type length_;
+};
+
+// This large function is defined inline so that in a fairly common case where
+// one of the arguments is a literal, the compiler can elide a lot of the
+// following comparisons.
+inline bool operator==(const StringPiece& x, const StringPiece& y) {
+  StringPiece::size_type len = x.size();
+  if (len != y.size()) {
+    return false;
+  }
+
+  const char* p1 = x.data();
+  const char* p2 = y.data();
+  if (p1 == p2) {
+    return true;
+  }
+  if (len == 0) {
+    return true;
+  }
+
+  // Test last byte in case strings share large common prefix
+  if (p1[len-1] != p2[len-1]) return false;
+  if (len == 1) return true;
+
+  // At this point we can, but don't have to, ignore the last byte.  We use
+  // this observation to fold the odd-length case into the even-length case.
+  len &= ~1;
+
+  return memcmp(p1, p2, len) == 0;
+}
+
+inline bool operator==(const StringPiece& x, const char* y) {
+  if (y == nullptr) {
+    return x.size() == 0;
+  } else {
+    return strncmp(x.data(), y, x.size()) == 0 && y[x.size()] == '\0';
+  }
+}
+
+inline bool operator!=(const StringPiece& x, const StringPiece& y) {
+  return !(x == y);
+}
+
+inline bool operator!=(const StringPiece& x, const char* y) {
+  return !(x == y);
+}
+
+inline bool operator<(const StringPiece& x, const StringPiece& y) {
+  return x.Compare(y) < 0;
+}
+
+inline bool operator>(const StringPiece& x, const StringPiece& y) {
+  return y < x;
+}
+
+inline bool operator<=(const StringPiece& x, const StringPiece& y) {
+  return !(x > y);
+}
+
+inline bool operator>=(const StringPiece& x, const StringPiece& y) {
+  return !(x < y);
+}
+
+inline std::ostream& operator<<(std::ostream& o, const StringPiece& piece) {
+  o.write(piece.data(), piece.size());
+  return o;
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_STRINGPIECE_H_

Bcore/src/main/cpp/base/value_object.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_VALUE_OBJECT_H_
+#define ART_LIBARTBASE_BASE_VALUE_OBJECT_H_
+
+#include "base/macros.h"
+
+namespace art_lkchan {
+
+class ValueObject {
+ private:
+  DISALLOW_ALLOCATION();
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBARTBASE_BASE_VALUE_OBJECT_H_

Bcore/src/main/cpp/dex/base64_test_util.h

@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_BASE64_TEST_UTIL_H_
+#define ART_LIBDEXFILE_DEX_BASE64_TEST_UTIL_H_
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <memory>
+#include <vector>
+
+#include <android-base/logging.h>
+
+namespace art_lkchan {
+
+static inline uint8_t* DecodeBase64(const char* src, size_t* dst_size) {
+  static const uint8_t kBase64Map[256] = {
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255,  62, 255, 255, 255,  63,
+    52,  53,  54,  55,  56,  57,  58,  59,  60,  61, 255, 255,
+    255, 254, 255, 255, 255,   0,   1,   2,   3,   4,   5,   6,
+      7,   8,   9,  10,  11,  12,  13,  14,  15,  16,  17,  18,
+     19,  20,  21,  22,  23,  24,  25, 255, 255, 255, 255, 255,
+    255,  26,  27,  28,  29,  30,  31,  32,  33,  34,  35,  36,
+     37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48,
+     49,  50,  51, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255
+  };
+
+  CHECK(dst_size != nullptr);
+  std::vector<uint8_t> tmp;
+  uint32_t t = 0, y = 0;
+  int g = 3;
+  for (size_t i = 0; src[i] != '\0'; ++i) {
+    uint8_t c = kBase64Map[src[i] & 0xFF];
+    if (c == 255) continue;
+    // the final = symbols are read and used to trim the remaining bytes
+    if (c == 254) {
+      c = 0;
+      // prevent g < 0 which would potentially allow an overflow later
+      if (--g < 0) {
+        *dst_size = 0;
+        return nullptr;
+      }
+    } else if (g != 3) {
+      // we only allow = to be at the end
+      *dst_size = 0;
+      return nullptr;
+    }
+    t = (t << 6) | c;
+    if (++y == 4) {
+      tmp.push_back((t >> 16) & 255);
+      if (g > 1) {
+        tmp.push_back((t >> 8) & 255);
+      }
+      if (g > 2) {
+        tmp.push_back(t & 255);
+      }
+      y = t = 0;
+    }
+  }
+  if (y != 0) {
+    *dst_size = 0;
+    return nullptr;
+  }
+  std::unique_ptr<uint8_t[]> dst(new uint8_t[tmp.size()]);
+  *dst_size = tmp.size();
+  std::copy(tmp.begin(), tmp.end(), dst.get());
+  return dst.release();
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_BASE64_TEST_UTIL_H_

Bcore/src/main/cpp/dex/bytecode_utils.h

@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_BYTECODE_UTILS_H_
+#define ART_LIBDEXFILE_DEX_BYTECODE_UTILS_H_
+
+#include "base/value_object.h"
+#include "dex/dex_file-inl.h"
+#include "dex/dex_file.h"
+#include "dex/dex_instruction-inl.h"
+
+namespace art_lkchan {
+
+class DexSwitchTable : public ValueObject {
+ public:
+  DexSwitchTable(const Instruction& instruction, uint32_t dex_pc)
+      : instruction_(instruction),
+        dex_pc_(dex_pc),
+        sparse_(instruction.Opcode() == Instruction::SPARSE_SWITCH) {
+    int32_t table_offset = instruction.VRegB_31t();
+    const uint16_t* table = reinterpret_cast<const uint16_t*>(&instruction) + table_offset;
+    DCHECK_EQ(table[0], sparse_ ? static_cast<uint16_t>(Instruction::kSparseSwitchSignature)
+                                : static_cast<uint16_t>(Instruction::kPackedSwitchSignature));
+    num_entries_ = table[1];
+    values_ = reinterpret_cast<const int32_t*>(&table[2]);
+  }
+
+  uint16_t GetNumEntries() const {
+    return num_entries_;
+  }
+
+  void CheckIndex(size_t index) const {
+    if (sparse_) {
+      // In a sparse table, we have num_entries_ keys and num_entries_ values, in that order.
+      DCHECK_LT(index, 2 * static_cast<size_t>(num_entries_));
+    } else {
+      // In a packed table, we have the starting key and num_entries_ values.
+      DCHECK_LT(index, 1 + static_cast<size_t>(num_entries_));
+    }
+  }
+
+  int32_t GetEntryAt(size_t index) const {
+    CheckIndex(index);
+    return values_[index];
+  }
+
+  uint32_t GetDexPcForIndex(size_t index) const {
+    CheckIndex(index);
+    return dex_pc_ +
+        (reinterpret_cast<const int16_t*>(values_ + index) -
+         reinterpret_cast<const int16_t*>(&instruction_));
+  }
+
+  // Index of the first value in the table.
+  size_t GetFirstValueIndex() const {
+    if (sparse_) {
+      // In a sparse table, we have num_entries_ keys and num_entries_ values, in that order.
+      return num_entries_;
+    } else {
+      // In a packed table, we have the starting key and num_entries_ values.
+      return 1;
+    }
+  }
+
+  bool IsSparse() const { return sparse_; }
+
+  bool ShouldBuildDecisionTree() {
+    return IsSparse() || GetNumEntries() <= kSmallSwitchThreshold;
+  }
+
+ private:
+  const Instruction& instruction_;
+  const uint32_t dex_pc_;
+
+  // Whether this is a sparse-switch table (or a packed-switch one).
+  const bool sparse_;
+
+  // This can't be const as it needs to be computed off of the given instruction, and complicated
+  // expressions in the initializer list seemed very ugly.
+  uint16_t num_entries_;
+
+  const int32_t* values_;
+
+  // The number of entries in a packed switch before we use a jump table or specified
+  // compare/jump series.
+  static constexpr uint16_t kSmallSwitchThreshold = 3;
+
+  DISALLOW_COPY_AND_ASSIGN(DexSwitchTable);
+};
+
+class DexSwitchTableIterator {
+ public:
+  explicit DexSwitchTableIterator(const DexSwitchTable& table)
+      : table_(table),
+        num_entries_(static_cast<size_t>(table_.GetNumEntries())),
+        first_target_offset_(table_.GetFirstValueIndex()),
+        index_(0u) {}
+
+  bool Done() const { return index_ >= num_entries_; }
+  bool IsLast() const { return index_ == num_entries_ - 1; }
+
+  void Advance() {
+    DCHECK(!Done());
+    index_++;
+  }
+
+  int32_t CurrentKey() const {
+    return table_.IsSparse() ? table_.GetEntryAt(index_) : table_.GetEntryAt(0) + index_;
+  }
+
+  int32_t CurrentTargetOffset() const {
+    return table_.GetEntryAt(index_ + first_target_offset_);
+  }
+
+  uint32_t GetDexPcForCurrentIndex() const { return table_.GetDexPcForIndex(index_); }
+
+ private:
+  const DexSwitchTable& table_;
+  const size_t num_entries_;
+  const size_t first_target_offset_;
+
+  size_t index_;
+};
+
+inline bool IsThrowingDexInstruction(const Instruction& instruction) {
+  // Special-case MONITOR_EXIT which is a throwing instruction but the verifier
+  // guarantees that it will never throw. This is necessary to avoid rejecting
+  // 'synchronized' blocks/methods.
+  return instruction.IsThrow() && instruction.Opcode() != Instruction::MONITOR_EXIT;
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_BYTECODE_UTILS_H_

Bcore/src/main/cpp/dex/class_reference.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_CLASS_REFERENCE_H_
+#define ART_LIBDEXFILE_DEX_CLASS_REFERENCE_H_
+
+#include <stdint.h>
+#include <utility>
+
+#include "dex/dex_file_reference.h"
+
+namespace art_lkchan {
+
+class DexFile;
+
+// A class is uniquely located by its DexFile and the class_defs_ table index into that DexFile
+class ClassReference : public DexFileReference {
+ public:
+  ClassReference(const DexFile* file, uint32_t class_def_idx)
+     : DexFileReference(file, class_def_idx) {}
+
+  uint32_t ClassDefIdx() const {
+    return index;
+  }
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_CLASS_REFERENCE_H_

Bcore/src/main/cpp/dex/code_item_accessors-inl.h

@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_CODE_ITEM_ACCESSORS_INL_H_
+#define ART_LIBDEXFILE_DEX_CODE_ITEM_ACCESSORS_INL_H_
+
+#include "code_item_accessors.h"
+
+#include "compact_dex_file.h"
+#include "dex_file-inl.h"
+#include "standard_dex_file.h"
+
+// The no ART version is used by binaries that don't include the whole runtime.
+namespace art_lkchan {
+
+inline void CodeItemInstructionAccessor::Init(uint32_t insns_size_in_code_units,
+                                              const uint16_t* insns) {
+  insns_size_in_code_units_ = insns_size_in_code_units;
+  insns_ = insns;
+}
+
+inline void CodeItemInstructionAccessor::Init(const CompactDexFile::CodeItem& code_item) {
+  uint32_t insns_size_in_code_units;
+  code_item.DecodeFields</*kDecodeOnlyInstructionCount*/ true>(
+      &insns_size_in_code_units,
+      /*registers_size*/ nullptr,
+      /*ins_size*/ nullptr,
+      /*outs_size*/ nullptr,
+      /*tries_size*/ nullptr);
+  Init(insns_size_in_code_units, code_item.insns_);
+}
+
+inline void CodeItemInstructionAccessor::Init(const StandardDexFile::CodeItem& code_item) {
+  Init(code_item.insns_size_in_code_units_, code_item.insns_);
+}
+
+inline void CodeItemInstructionAccessor::Init(const DexFile& dex_file,
+                                              const DexFile::CodeItem* code_item) {
+  if (code_item != nullptr) {
+    DCHECK(dex_file.IsInDataSection(code_item));
+    if (dex_file.IsCompactDexFile()) {
+      Init(down_cast<const CompactDexFile::CodeItem&>(*code_item));
+    } else {
+      DCHECK(dex_file.IsStandardDexFile());
+      Init(down_cast<const StandardDexFile::CodeItem&>(*code_item));
+    }
+  }
+}
+
+inline CodeItemInstructionAccessor::CodeItemInstructionAccessor(
+    const DexFile& dex_file,
+    const DexFile::CodeItem* code_item) {
+  Init(dex_file, code_item);
+}
+
+inline DexInstructionIterator CodeItemInstructionAccessor::begin() const {
+  return DexInstructionIterator(insns_, 0u);
+}
+
+inline DexInstructionIterator CodeItemInstructionAccessor::end() const {
+  return DexInstructionIterator(insns_, insns_size_in_code_units_);
+}
+
+inline IterationRange<DexInstructionIterator> CodeItemInstructionAccessor::InstructionsFrom(
+    uint32_t start_dex_pc) const {
+  DCHECK_LT(start_dex_pc, InsnsSizeInCodeUnits());
+  return {
+      DexInstructionIterator(insns_, start_dex_pc),
+      DexInstructionIterator(insns_, insns_size_in_code_units_) };
+}
+
+inline void CodeItemDataAccessor::Init(const CompactDexFile::CodeItem& code_item) {
+  uint32_t insns_size_in_code_units;
+  code_item.DecodeFields</*kDecodeOnlyInstructionCount*/ false>(&insns_size_in_code_units,
+                                                                &registers_size_,
+                                                                &ins_size_,
+                                                                &outs_size_,
+                                                                &tries_size_);
+  CodeItemInstructionAccessor::Init(insns_size_in_code_units, code_item.insns_);
+}
+
+inline void CodeItemDataAccessor::Init(const StandardDexFile::CodeItem& code_item) {
+  CodeItemInstructionAccessor::Init(code_item);
+  registers_size_ = code_item.registers_size_;
+  ins_size_ = code_item.ins_size_;
+  outs_size_ = code_item.outs_size_;
+  tries_size_ = code_item.tries_size_;
+}
+
+inline void CodeItemDataAccessor::Init(const DexFile& dex_file,
+                                       const DexFile::CodeItem* code_item) {
+  if (code_item != nullptr) {
+    if (dex_file.IsCompactDexFile()) {
+      CodeItemDataAccessor::Init(down_cast<const CompactDexFile::CodeItem&>(*code_item));
+    } else {
+      DCHECK(dex_file.IsStandardDexFile());
+      CodeItemDataAccessor::Init(down_cast<const StandardDexFile::CodeItem&>(*code_item));
+    }
+  }
+}
+
+inline CodeItemDataAccessor::CodeItemDataAccessor(const DexFile& dex_file,
+                                                  const DexFile::CodeItem* code_item) {
+  Init(dex_file, code_item);
+}
+
+inline IterationRange<const DexFile::TryItem*> CodeItemDataAccessor::TryItems() const {
+  const DexFile::TryItem* try_items = DexFile::GetTryItems(end(), 0u);
+  return {
+    try_items,
+    try_items + TriesSize() };
+}
+
+inline const uint8_t* CodeItemDataAccessor::GetCatchHandlerData(size_t offset) const {
+  return DexFile::GetCatchHandlerData(end(), TriesSize(), offset);
+}
+
+inline const DexFile::TryItem* CodeItemDataAccessor::FindTryItem(uint32_t try_dex_pc) const {
+  IterationRange<const DexFile::TryItem*> try_items(TryItems());
+  int32_t index = DexFile::FindTryItem(try_items.begin(),
+                                       try_items.end() - try_items.begin(),
+                                       try_dex_pc);
+  return index != -1 ? &try_items.begin()[index] : nullptr;
+}
+
+inline const void* CodeItemDataAccessor::CodeItemDataEnd() const {
+  const uint8_t* handler_data = GetCatchHandlerData();
+
+  if (TriesSize() == 0 || handler_data == nullptr) {
+    return &end().Inst();
+  }
+  // Get the start of the handler data.
+  const uint32_t handlers_size = DecodeUnsignedLeb128(&handler_data);
+  // Manually read each handler.
+  for (uint32_t i = 0; i < handlers_size; ++i) {
+    int32_t uleb128_count = DecodeSignedLeb128(&handler_data) * 2;
+    if (uleb128_count <= 0) {
+      uleb128_count = -uleb128_count + 1;
+    }
+    for (int32_t j = 0; j < uleb128_count; ++j) {
+      DecodeUnsignedLeb128(&handler_data);
+    }
+  }
+  return reinterpret_cast<const void*>(handler_data);
+}
+
+inline void CodeItemDebugInfoAccessor::Init(const DexFile& dex_file,
+                                            const DexFile::CodeItem* code_item,
+                                            uint32_t dex_method_index) {
+  if (code_item == nullptr) {
+    return;
+  }
+  dex_file_ = &dex_file;
+  if (dex_file.IsCompactDexFile()) {
+    Init(down_cast<const CompactDexFile::CodeItem&>(*code_item), dex_method_index);
+  } else {
+    DCHECK(dex_file.IsStandardDexFile());
+    Init(down_cast<const StandardDexFile::CodeItem&>(*code_item));
+  }
+}
+
+inline void CodeItemDebugInfoAccessor::Init(const CompactDexFile::CodeItem& code_item,
+                                            uint32_t dex_method_index) {
+  debug_info_offset_ = down_cast<const CompactDexFile*>(dex_file_)->GetDebugInfoOffset(
+      dex_method_index);
+  CodeItemDataAccessor::Init(code_item);
+}
+
+inline void CodeItemDebugInfoAccessor::Init(const StandardDexFile::CodeItem& code_item) {
+  debug_info_offset_ = code_item.debug_info_off_;
+  CodeItemDataAccessor::Init(code_item);
+}
+
+template<typename NewLocalCallback>
+inline bool CodeItemDebugInfoAccessor::DecodeDebugLocalInfo(bool is_static,
+                                                            uint32_t method_idx,
+                                                            NewLocalCallback new_local,
+                                                            void* context) const {
+  return dex_file_->DecodeDebugLocalInfo(RegistersSize(),
+                                         InsSize(),
+                                         InsnsSizeInCodeUnits(),
+                                         DebugInfoOffset(),
+                                         is_static,
+                                         method_idx,
+                                         new_local,
+                                         context);
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_CODE_ITEM_ACCESSORS_INL_H_

Bcore/src/main/cpp/dex/code_item_accessors.h

@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// TODO: Dex helpers have ART specific APIs, we may want to refactor these for use in dexdump.
+
+#ifndef ART_LIBDEXFILE_DEX_CODE_ITEM_ACCESSORS_H_
+#define ART_LIBDEXFILE_DEX_CODE_ITEM_ACCESSORS_H_
+
+#include "compact_dex_file.h"
+#include "dex_file.h"
+#include "dex_instruction_iterator.h"
+#include "standard_dex_file.h"
+
+namespace art_lkchan {
+
+class ArtMethod;
+
+// Abstracts accesses to the instruction fields of code items for CompactDexFile and
+// StandardDexFile.
+class CodeItemInstructionAccessor {
+ public:
+  ALWAYS_INLINE CodeItemInstructionAccessor(const DexFile& dex_file,
+                                            const DexFile::CodeItem* code_item);
+
+  ALWAYS_INLINE explicit CodeItemInstructionAccessor(ArtMethod* method);
+
+  ALWAYS_INLINE DexInstructionIterator begin() const;
+
+  ALWAYS_INLINE DexInstructionIterator end() const;
+
+  IterationRange<DexInstructionIterator> InstructionsFrom(uint32_t start_dex_pc) const;
+
+  uint32_t InsnsSizeInCodeUnits() const {
+    return insns_size_in_code_units_;
+  }
+
+  const uint16_t* Insns() const {
+    return insns_;
+  }
+
+  // Return the instruction for a dex pc.
+  const Instruction& InstructionAt(uint32_t dex_pc) const {
+    DCHECK_LT(dex_pc, InsnsSizeInCodeUnits());
+    return *Instruction::At(insns_ + dex_pc);
+  }
+
+  // Return true if the accessor has a code item.
+  bool HasCodeItem() const {
+    return Insns() != nullptr;
+  }
+
+ protected:
+  CodeItemInstructionAccessor() = default;
+
+  ALWAYS_INLINE void Init(uint32_t insns_size_in_code_units, const uint16_t* insns);
+  ALWAYS_INLINE void Init(const CompactDexFile::CodeItem& code_item);
+  ALWAYS_INLINE void Init(const StandardDexFile::CodeItem& code_item);
+  ALWAYS_INLINE void Init(const DexFile& dex_file, const DexFile::CodeItem* code_item);
+
+ private:
+  // size of the insns array, in 2 byte code units. 0 if there is no code item.
+  uint32_t insns_size_in_code_units_ = 0;
+
+  // Pointer to the instructions, null if there is no code item.
+  const uint16_t* insns_ = 0;
+};
+
+// Abstracts accesses to code item fields other than debug info for CompactDexFile and
+// StandardDexFile.
+class CodeItemDataAccessor : public CodeItemInstructionAccessor {
+ public:
+  ALWAYS_INLINE CodeItemDataAccessor(const DexFile& dex_file, const DexFile::CodeItem* code_item);
+
+  uint16_t RegistersSize() const {
+    return registers_size_;
+  }
+
+  uint16_t InsSize() const {
+    return ins_size_;
+  }
+
+  uint16_t OutsSize() const {
+    return outs_size_;
+  }
+
+  uint16_t TriesSize() const {
+    return tries_size_;
+  }
+
+  IterationRange<const DexFile::TryItem*> TryItems() const;
+
+  const uint8_t* GetCatchHandlerData(size_t offset = 0) const;
+
+  const DexFile::TryItem* FindTryItem(uint32_t try_dex_pc) const;
+
+  inline const void* CodeItemDataEnd() const;
+
+ protected:
+  CodeItemDataAccessor() = default;
+
+  ALWAYS_INLINE void Init(const CompactDexFile::CodeItem& code_item);
+  ALWAYS_INLINE void Init(const StandardDexFile::CodeItem& code_item);
+  ALWAYS_INLINE void Init(const DexFile& dex_file, const DexFile::CodeItem* code_item);
+
+ private:
+  // Fields mirrored from the dex/cdex code item.
+  uint16_t registers_size_;
+  uint16_t ins_size_;
+  uint16_t outs_size_;
+  uint16_t tries_size_;
+};
+
+// Abstract accesses to code item data including debug info offset. More heavy weight than the other
+// helpers.
+class CodeItemDebugInfoAccessor : public CodeItemDataAccessor {
+ public:
+  CodeItemDebugInfoAccessor() = default;
+
+  // Initialize with an existing offset.
+  ALWAYS_INLINE CodeItemDebugInfoAccessor(const DexFile& dex_file,
+                                          const DexFile::CodeItem* code_item,
+                                          uint32_t dex_method_index) {
+    Init(dex_file, code_item, dex_method_index);
+  }
+
+  ALWAYS_INLINE void Init(const DexFile& dex_file,
+                          const DexFile::CodeItem* code_item,
+                          uint32_t dex_method_index);
+
+  ALWAYS_INLINE explicit CodeItemDebugInfoAccessor(ArtMethod* method);
+
+  uint32_t DebugInfoOffset() const {
+    return debug_info_offset_;
+  }
+
+  template<typename NewLocalCallback>
+  bool DecodeDebugLocalInfo(bool is_static,
+                            uint32_t method_idx,
+                            NewLocalCallback new_local,
+                            void* context) const;
+
+ protected:
+  ALWAYS_INLINE void Init(const CompactDexFile::CodeItem& code_item, uint32_t dex_method_index);
+  ALWAYS_INLINE void Init(const StandardDexFile::CodeItem& code_item);
+
+ private:
+  const DexFile* dex_file_ = nullptr;
+  uint32_t debug_info_offset_ = 0u;
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_CODE_ITEM_ACCESSORS_H_

Bcore/src/main/cpp/dex/compact_dex_file.cc

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "compact_dex_file.h"
+
+#include "base/leb128.h"
+#include "code_item_accessors-inl.h"
+#include "dex_file-inl.h"
+
+namespace art_lkchan {
+
+constexpr uint8_t CompactDexFile::kDexMagic[kDexMagicSize];
+constexpr uint8_t CompactDexFile::kDexMagicVersion[];
+
+void CompactDexFile::WriteMagic(uint8_t* magic) {
+  std::copy_n(kDexMagic, kDexMagicSize, magic);
+}
+
+void CompactDexFile::WriteCurrentVersion(uint8_t* magic) {
+  std::copy_n(kDexMagicVersion, kDexVersionLen, magic + kDexMagicSize);
+}
+
+bool CompactDexFile::IsMagicValid(const uint8_t* magic) {
+  return (memcmp(magic, kDexMagic, sizeof(kDexMagic)) == 0);
+}
+
+bool CompactDexFile::IsVersionValid(const uint8_t* magic) {
+  const uint8_t* version = &magic[sizeof(kDexMagic)];
+  return memcmp(version, kDexMagicVersion, kDexVersionLen) == 0;
+}
+
+bool CompactDexFile::IsMagicValid() const {
+  return IsMagicValid(header_->magic_);
+}
+
+bool CompactDexFile::IsVersionValid() const {
+  return IsVersionValid(header_->magic_);
+}
+
+bool CompactDexFile::SupportsDefaultMethods() const {
+  return (GetHeader().GetFeatureFlags() &
+      static_cast<uint32_t>(FeatureFlags::kDefaultMethods)) != 0;
+}
+
+uint32_t CompactDexFile::GetCodeItemSize(const DexFile::CodeItem& item) const {
+  DCHECK(IsInDataSection(&item));
+  return reinterpret_cast<uintptr_t>(CodeItemDataAccessor(*this, &item).CodeItemDataEnd()) -
+      reinterpret_cast<uintptr_t>(&item);
+}
+
+
+uint32_t CompactDexFile::CalculateChecksum(const uint8_t* base_begin,
+                                           size_t base_size,
+                                           const uint8_t* data_begin,
+                                           size_t data_size) {
+  Header temp_header(*Header::At(base_begin));
+  // Zero out fields that are not included in the sum.
+  temp_header.checksum_ = 0u;
+  temp_header.data_off_ = 0u;
+  temp_header.data_size_ = 0u;
+  uint32_t checksum = ChecksumMemoryRange(reinterpret_cast<const uint8_t*>(&temp_header),
+                                          sizeof(temp_header));
+  // Exclude the header since we already computed it's checksum.
+  checksum = (checksum * 31) ^ ChecksumMemoryRange(base_begin + sizeof(temp_header),
+                                                   base_size - sizeof(temp_header));
+  checksum = (checksum * 31) ^ ChecksumMemoryRange(data_begin, data_size);
+  return checksum;
+}
+
+uint32_t CompactDexFile::CalculateChecksum() const {
+  return CalculateChecksum(Begin(), Size(), DataBegin(), DataSize());
+}
+
+CompactDexFile::CompactDexFile(const uint8_t* base,
+                               size_t size,
+                               const uint8_t* data_begin,
+                               size_t data_size,
+                               const std::string& location,
+                               uint32_t location_checksum,
+                               const OatDexFile* oat_dex_file,
+                               std::unique_ptr<DexFileContainer> container)
+    : DexFile(base,
+              size,
+              data_begin,
+              data_size,
+              location,
+              location_checksum,
+              oat_dex_file,
+              std::move(container),
+              /*is_compact_dex*/ true),
+      debug_info_offsets_(DataBegin() + GetHeader().debug_info_offsets_pos_,
+                          GetHeader().debug_info_base_,
+                          GetHeader().debug_info_offsets_table_offset_) {}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/compact_dex_file.h

@@ -0,0 +1,305 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_COMPACT_DEX_FILE_H_
+#define ART_LIBDEXFILE_DEX_COMPACT_DEX_FILE_H_
+
+#include "base/casts.h"
+#include "dex_file.h"
+#include "dex/compact_offset_table.h"
+
+namespace art_lkchan {
+
+// CompactDex is a currently ART internal dex file format that aims to reduce storage/RAM usage.
+class CompactDexFile : public DexFile {
+ public:
+  static constexpr uint8_t kDexMagic[kDexMagicSize] = { 'c', 'd', 'e', 'x' };
+  static constexpr uint8_t kDexMagicVersion[] = {'0', '0', '1', '\0'};
+
+  enum class FeatureFlags : uint32_t {
+    kDefaultMethods = 0x1,
+  };
+
+  class Header : public DexFile::Header {
+   public:
+    static const Header* At(const void* at) {
+      return reinterpret_cast<const Header*>(at);
+    }
+
+    uint32_t GetFeatureFlags() const {
+      return feature_flags_;
+    }
+
+    uint32_t GetDataOffset() const {
+      return data_off_;
+    }
+
+    uint32_t GetDataSize() const {
+      return data_size_;
+    }
+
+    // Range of the shared data section owned by the dex file. Owned in this context refers to data
+    // for this DEX that was not deduplicated to another DEX.
+    uint32_t OwnedDataBegin() const {
+      return owned_data_begin_;
+    }
+
+    uint32_t OwnedDataEnd() const {
+      return owned_data_end_;
+    }
+
+   private:
+    uint32_t feature_flags_ = 0u;
+
+    // Position in the compact dex file for the debug info table data starts.
+    uint32_t debug_info_offsets_pos_ = 0u;
+
+    // Offset into the debug info table data where the lookup table is.
+    uint32_t debug_info_offsets_table_offset_ = 0u;
+
+    // Base offset of where debug info starts in the dex file.
+    uint32_t debug_info_base_ = 0u;
+
+    // Range of the shared data section owned by the dex file.
+    uint32_t owned_data_begin_ = 0u;
+    uint32_t owned_data_end_ = 0u;
+
+    friend class CompactDexFile;
+    friend class CompactDexWriter;
+  };
+
+  // Like the standard code item except without a debug info offset. Each code item may have a
+  // preheader to encode large methods. In 99% of cases, the preheader is not used. This enables
+  // smaller size with a good fast path case in the accessors.
+  struct CodeItem : public DexFile::CodeItem {
+    static constexpr size_t kAlignment = sizeof(uint16_t);
+    // Max preheader size in uint16_ts.
+    static constexpr size_t kMaxPreHeaderSize = 6;
+
+   private:
+    CodeItem() = default;
+
+    static constexpr size_t kRegistersSizeShift = 12;
+    static constexpr size_t kInsSizeShift = 8;
+    static constexpr size_t kOutsSizeShift = 4;
+    static constexpr size_t kTriesSizeSizeShift = 0;
+    static constexpr uint16_t kFlagPreHeaderRegisterSize = 0x1 << 0;
+    static constexpr uint16_t kFlagPreHeaderInsSize = 0x1 << 1;
+    static constexpr uint16_t kFlagPreHeaderOutsSize = 0x1 << 2;
+    static constexpr uint16_t kFlagPreHeaderTriesSize = 0x1 << 3;
+    static constexpr uint16_t kFlagPreHeaderInsnsSize = 0x1 << 4;
+    static constexpr size_t kInsnsSizeShift = 5;
+    static constexpr size_t kInsnsSizeBits = sizeof(uint16_t) * kBitsPerByte -  kInsnsSizeShift;
+
+    // Combined preheader flags for fast testing if we need to go slow path.
+    static constexpr uint16_t kFlagPreHeaderCombined =
+        kFlagPreHeaderRegisterSize |
+        kFlagPreHeaderInsSize |
+        kFlagPreHeaderOutsSize |
+        kFlagPreHeaderTriesSize |
+        kFlagPreHeaderInsnsSize;
+
+    // Create a code item and associated preheader if required based on field values.
+    // Returns the start of the preheader. The preheader buffer must be at least as large as
+    // kMaxPreHeaderSize;
+    uint16_t* Create(uint16_t registers_size,
+                     uint16_t ins_size,
+                     uint16_t outs_size,
+                     uint16_t tries_size,
+                     uint32_t insns_size_in_code_units,
+                     uint16_t* out_preheader) {
+      // Dex verification ensures that registers size > ins_size, so we can subtract the registers
+      // size accordingly to reduce how often we need to use the preheader.
+      DCHECK_GE(registers_size, ins_size);
+      registers_size -= ins_size;
+      fields_ = (registers_size & 0xF) << kRegistersSizeShift;
+      fields_ |= (ins_size & 0xF) << kInsSizeShift;
+      fields_ |= (outs_size & 0xF) << kOutsSizeShift;
+      fields_ |= (tries_size & 0xF) << kTriesSizeSizeShift;
+      registers_size &= ~0xF;
+      ins_size &= ~0xF;
+      outs_size &= ~0xF;
+      tries_size &= ~0xF;
+      insns_count_and_flags_ = 0;
+      const size_t masked_count = insns_size_in_code_units & ((1 << kInsnsSizeBits) - 1);
+      insns_count_and_flags_ |= masked_count << kInsnsSizeShift;
+      insns_size_in_code_units -= masked_count;
+
+      // Since the preheader case is rare (1% of code items), use a suboptimally large but fast
+      // decoding format.
+      if (insns_size_in_code_units != 0) {
+        insns_count_and_flags_ |= kFlagPreHeaderInsnsSize;
+        --out_preheader;
+        *out_preheader = static_cast<uint16_t>(insns_size_in_code_units);
+        --out_preheader;
+        *out_preheader = static_cast<uint16_t>(insns_size_in_code_units >> 16);
+      }
+      auto preheader_encode = [&](uint16_t size, uint16_t flag) {
+        if (size != 0) {
+          insns_count_and_flags_ |= flag;
+          --out_preheader;
+          *out_preheader = size;
+        }
+      };
+      preheader_encode(registers_size, kFlagPreHeaderRegisterSize);
+      preheader_encode(ins_size, kFlagPreHeaderInsSize);
+      preheader_encode(outs_size, kFlagPreHeaderOutsSize);
+      preheader_encode(tries_size, kFlagPreHeaderTriesSize);
+      return out_preheader;
+    }
+
+    ALWAYS_INLINE bool HasPreHeader(uint16_t flag) const {
+      return (insns_count_and_flags_ & flag) != 0;
+    }
+
+    // Return true if the code item has any preheaders.
+    ALWAYS_INLINE static bool HasAnyPreHeader(uint16_t insns_count_and_flags) {
+      return (insns_count_and_flags & kFlagPreHeaderCombined) != 0;
+    }
+
+    ALWAYS_INLINE uint16_t* GetPreHeader() {
+      return reinterpret_cast<uint16_t*>(this);
+    }
+
+    ALWAYS_INLINE const uint16_t* GetPreHeader() const {
+      return reinterpret_cast<const uint16_t*>(this);
+    }
+
+    // Decode fields and read the preheader if necessary. If kDecodeOnlyInstructionCount is
+    // specified then only the instruction count is decoded.
+    template <bool kDecodeOnlyInstructionCount>
+    ALWAYS_INLINE void DecodeFields(uint32_t* insns_count,
+                                    uint16_t* registers_size,
+                                    uint16_t* ins_size,
+                                    uint16_t* outs_size,
+                                    uint16_t* tries_size) const {
+      *insns_count = insns_count_and_flags_ >> kInsnsSizeShift;
+      if (!kDecodeOnlyInstructionCount) {
+        const uint16_t fields = fields_;
+        *registers_size = (fields >> kRegistersSizeShift) & 0xF;
+        *ins_size = (fields >> kInsSizeShift) & 0xF;
+        *outs_size = (fields >> kOutsSizeShift) & 0xF;
+        *tries_size = (fields >> kTriesSizeSizeShift) & 0xF;
+      }
+      if (UNLIKELY(HasAnyPreHeader(insns_count_and_flags_))) {
+        const uint16_t* preheader = GetPreHeader();
+        if (HasPreHeader(kFlagPreHeaderInsnsSize)) {
+          --preheader;
+          *insns_count += static_cast<uint32_t>(*preheader);
+          --preheader;
+          *insns_count += static_cast<uint32_t>(*preheader) << 16;
+        }
+        if (!kDecodeOnlyInstructionCount) {
+          if (HasPreHeader(kFlagPreHeaderRegisterSize)) {
+            --preheader;
+            *registers_size += preheader[0];
+          }
+          if (HasPreHeader(kFlagPreHeaderInsSize)) {
+            --preheader;
+            *ins_size += preheader[0];
+          }
+          if (HasPreHeader(kFlagPreHeaderOutsSize)) {
+            --preheader;
+            *outs_size += preheader[0];
+          }
+          if (HasPreHeader(kFlagPreHeaderTriesSize)) {
+            --preheader;
+            *tries_size += preheader[0];
+          }
+        }
+      }
+      if (!kDecodeOnlyInstructionCount) {
+        *registers_size += *ins_size;
+      }
+    }
+
+    // Packed code item data, 4 bits each: [registers_size, ins_size, outs_size, tries_size]
+    uint16_t fields_;
+
+    // 5 bits for if either of the fields required preheader extension, 11 bits for the number of
+    // instruction code units.
+    uint16_t insns_count_and_flags_;
+
+    uint16_t insns_[1];                  // actual array of bytecode.
+
+    ART_FRIEND_TEST(CodeItemAccessorsTest, TestDexInstructionsAccessor);
+    ART_FRIEND_TEST(CompactDexFileTest, CodeItemFields);
+    friend class CodeItemDataAccessor;
+    friend class CodeItemDebugInfoAccessor;
+    friend class CodeItemInstructionAccessor;
+    friend class CompactDexFile;
+    friend class CompactDexWriter;
+    DISALLOW_COPY_AND_ASSIGN(CodeItem);
+  };
+
+  // Write the compact dex specific magic.
+  static void WriteMagic(uint8_t* magic);
+
+  // Write the current version, note that the input is the address of the magic.
+  static void WriteCurrentVersion(uint8_t* magic);
+
+  // Returns true if the byte string points to the magic value.
+  static bool IsMagicValid(const uint8_t* magic);
+  virtual bool IsMagicValid() const OVERRIDE;
+
+  // Returns true if the byte string after the magic is the correct value.
+  static bool IsVersionValid(const uint8_t* magic);
+  virtual bool IsVersionValid() const OVERRIDE;
+
+  // TODO This is completely a guess. We really need to do better. b/72402467
+  // We ask for 64 megabytes which should be big enough for any realistic dex file.
+  virtual size_t GetDequickenedSize() const OVERRIDE {
+    return 64 * MB;
+  }
+
+  const Header& GetHeader() const {
+    return down_cast<const Header&>(DexFile::GetHeader());
+  }
+
+  virtual bool SupportsDefaultMethods() const OVERRIDE;
+
+  uint32_t GetCodeItemSize(const DexFile::CodeItem& item) const OVERRIDE;
+
+  uint32_t GetDebugInfoOffset(uint32_t dex_method_index) const {
+    return debug_info_offsets_.GetOffset(dex_method_index);
+  }
+
+  static uint32_t CalculateChecksum(const uint8_t* base_begin,
+                                    size_t base_size,
+                                    const uint8_t* data_begin,
+                                    size_t data_size);
+  virtual uint32_t CalculateChecksum() const OVERRIDE;
+
+ private:
+  CompactDexFile(const uint8_t* base,
+                 size_t size,
+                 const uint8_t* data_begin,
+                 size_t data_size,
+                 const std::string& location,
+                 uint32_t location_checksum,
+                 const OatDexFile* oat_dex_file,
+                 std::unique_ptr<DexFileContainer> container);
+
+  CompactOffsetTable::Accessor debug_info_offsets_;
+
+  friend class DexFile;
+  friend class DexFileLoader;
+  DISALLOW_COPY_AND_ASSIGN(CompactDexFile);
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_COMPACT_DEX_FILE_H_

Bcore/src/main/cpp/dex/compact_dex_level.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_COMPACT_DEX_LEVEL_H_
+#define ART_LIBDEXFILE_DEX_COMPACT_DEX_LEVEL_H_
+
+#include <string>
+
+#include "dex_file.h"
+
+namespace art_lkchan {
+
+// Optimization level for compact dex generation.
+enum class CompactDexLevel {
+  // Level none means not generated.
+  kCompactDexLevelNone,
+  // Level fast means optimizations that don't take many resources to perform.
+  kCompactDexLevelFast,
+};
+
+#ifndef ART_DEFAULT_COMPACT_DEX_LEVEL
+#error ART_DEFAULT_COMPACT_DEX_LEVEL not specified.
+#else
+#define ART_DEFAULT_COMPACT_DEX_LEVEL_VALUE_fast CompactDexLevel::kCompactDexLevelFast
+#define ART_DEFAULT_COMPACT_DEX_LEVEL_VALUE_none CompactDexLevel::kCompactDexLevelNone
+
+#define ART_DEFAULT_COMPACT_DEX_LEVEL_DEFAULT APPEND_TOKENS_AFTER_EVAL( \
+    ART_DEFAULT_COMPACT_DEX_LEVEL_VALUE_, \
+    ART_DEFAULT_COMPACT_DEX_LEVEL)
+
+static constexpr CompactDexLevel kDefaultCompactDexLevel = ART_DEFAULT_COMPACT_DEX_LEVEL_DEFAULT;
+#endif
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_COMPACT_DEX_LEVEL_H_

Bcore/src/main/cpp/dex/compact_dex_utils.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_COMPACT_DEX_UTILS_H_
+#define ART_LIBDEXFILE_DEX_COMPACT_DEX_UTILS_H_
+
+#include <vector>
+
+#include "base/bit_utils.h"
+
+namespace art_lkchan {
+
+// Add padding to the end of the array until the size is aligned.
+template <typename T, template<typename> class Allocator>
+static inline void AlignmentPadVector(std::vector<T, Allocator<T>>* dest,
+                                      size_t alignment) {
+  while (!IsAlignedParam(dest->size(), alignment)) {
+    dest->push_back(T());
+  }
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_COMPACT_DEX_UTILS_H_

Bcore/src/main/cpp/dex/compact_offset_table.cc

@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "compact_offset_table.h"
+
+#include "compact_dex_utils.h"
+#include "base/leb128.h"
+
+namespace art_lkchan {
+
+constexpr size_t CompactOffsetTable::kElementsPerIndex;
+
+CompactOffsetTable::Accessor::Accessor(const uint8_t* data_begin,
+                                       uint32_t minimum_offset,
+                                       uint32_t table_offset)
+    : table_(reinterpret_cast<const uint32_t*>(data_begin + table_offset)),
+      minimum_offset_(minimum_offset),
+      data_begin_(data_begin) {}
+
+CompactOffsetTable::Accessor::Accessor(const uint8_t* data_begin)
+    : Accessor(data_begin + 2 * sizeof(uint32_t),
+               reinterpret_cast<const uint32_t*>(data_begin)[0],
+               reinterpret_cast<const uint32_t*>(data_begin)[1]) {}
+
+uint32_t CompactOffsetTable::Accessor::GetOffset(uint32_t index) const {
+  const uint32_t offset = table_[index / kElementsPerIndex];
+  const size_t bit_index = index % kElementsPerIndex;
+
+  const uint8_t* block = data_begin_ + offset;
+  uint16_t bit_mask = *block;
+  ++block;
+  bit_mask = (bit_mask << kBitsPerByte) | *block;
+  ++block;
+  if ((bit_mask & (1 << bit_index)) == 0) {
+    // Bit is not set means the offset is 0.
+    return 0u;
+  }
+  // Trim off the bits above the index we want and count how many bits are set. This is how many
+  // lebs we need to decode.
+  size_t count = POPCOUNT(static_cast<uintptr_t>(bit_mask) << (kBitsPerIntPtrT - 1 - bit_index));
+  DCHECK_GT(count, 0u);
+  uint32_t current_offset = minimum_offset_;
+  do {
+    current_offset += DecodeUnsignedLeb128(&block);
+    --count;
+  } while (count > 0);
+  return current_offset;
+}
+
+void CompactOffsetTable::Build(const std::vector<uint32_t>& offsets,
+                               std::vector<uint8_t>* out_data) {
+  static constexpr size_t kNumOffsets = 2;
+  uint32_t out_offsets[kNumOffsets] = {};
+  CompactOffsetTable::Build(offsets, out_data, &out_offsets[0], &out_offsets[1]);
+  // Write the offsets at the start of the debug info.
+  out_data->insert(out_data->begin(),
+                   reinterpret_cast<const uint8_t*>(&out_offsets[0]),
+                   reinterpret_cast<const uint8_t*>(&out_offsets[kNumOffsets]));
+}
+
+void CompactOffsetTable::Build(const std::vector<uint32_t>& offsets,
+                               std::vector<uint8_t>* out_data,
+                               uint32_t* out_min_offset,
+                               uint32_t* out_table_offset) {
+  DCHECK(out_data != nullptr);
+  DCHECK(out_data->empty());
+  // Calculate the base offset and return it.
+  *out_min_offset = std::numeric_limits<uint32_t>::max();
+  for (const uint32_t offset : offsets) {
+    if (offset != 0u) {
+      *out_min_offset = std::min(*out_min_offset, offset);
+    }
+  }
+  // Write the leb blocks and store the important offsets (each kElementsPerIndex elements).
+  size_t block_start = 0;
+
+  std::vector<uint32_t> offset_table;
+
+  // Write data first then the table.
+  while (block_start < offsets.size()) {
+    // Write the offset of the block for each block.
+    offset_table.push_back(out_data->size());
+
+    // Block size of up to kElementsPerIndex
+    const size_t block_size = std::min(offsets.size() - block_start, kElementsPerIndex);
+
+    // Calculate bit mask since need to write that first.
+    uint16_t bit_mask = 0u;
+    for (size_t i = 0; i < block_size; ++i) {
+      if (offsets[block_start + i] != 0u) {
+        bit_mask |= 1 << i;
+      }
+    }
+    // Write bit mask.
+    out_data->push_back(static_cast<uint8_t>(bit_mask >> kBitsPerByte));
+    out_data->push_back(static_cast<uint8_t>(bit_mask));
+
+    // Write offsets relative to the previous offset.
+    uint32_t prev_offset = *out_min_offset;
+    for (size_t i = 0; i < block_size; ++i) {
+      const uint32_t offset = offsets[block_start + i];
+      if (offset != 0u) {
+        uint32_t delta = offset - prev_offset;
+        EncodeUnsignedLeb128(out_data, delta);
+        prev_offset = offset;
+      }
+    }
+
+    block_start += block_size;
+  }
+
+  // Write the offset table.
+  AlignmentPadVector(out_data, alignof(uint32_t));
+  *out_table_offset = out_data->size();
+  out_data->insert(out_data->end(),
+                   reinterpret_cast<const uint8_t*>(&offset_table[0]),
+                   reinterpret_cast<const uint8_t*>(&offset_table[0] + offset_table.size()));
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/compact_offset_table.h

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_COMPACT_OFFSET_TABLE_H_
+#define ART_LIBDEXFILE_DEX_COMPACT_OFFSET_TABLE_H_
+
+#include <cstdint>
+#include <vector>
+
+namespace art_lkchan {
+
+// Compact offset table that aims to minimize size while still providing reasonable speed (10-20ns
+// average time per lookup on host).
+class CompactOffsetTable {
+ public:
+  // This value is coupled with the leb chunk bitmask. That logic must also be adjusted when the
+  // integer is modified.
+  static constexpr size_t kElementsPerIndex = 16;
+
+  // Leb block format:
+  // [uint16_t] 16 bit mask for what indexes actually have a non zero offset for the chunk.
+  // [lebs] Up to 16 lebs encoded using leb128, one leb bit. The leb specifies how the offset
+  // changes compared to the previous index.
+
+  class Accessor {
+   public:
+    // Read the minimum and table offsets from the data pointer.
+    explicit Accessor(const uint8_t* data_begin);
+
+    Accessor(const uint8_t* data_begin, uint32_t minimum_offset, uint32_t table_offset);
+
+    // Return the offset for the index.
+    uint32_t GetOffset(uint32_t index) const;
+
+   private:
+    const uint32_t* const table_;
+    const uint32_t minimum_offset_;
+    const uint8_t* const data_begin_;
+  };
+
+  // Version that also serializes the min offset and table offset.
+  static void Build(const std::vector<uint32_t>& offsets, std::vector<uint8_t>* out_data);
+
+  // Returned offsets are all relative to out_min_offset.
+  static void Build(const std::vector<uint32_t>& offsets,
+                    std::vector<uint8_t>* out_data,
+                    uint32_t* out_min_offset,
+                    uint32_t* out_table_offset);
+
+  // 32 bit aligned for the offset table.
+  static constexpr size_t kAlignment = sizeof(uint32_t);
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_COMPACT_OFFSET_TABLE_H_

Bcore/src/main/cpp/dex/descriptors_names.cc

@@ -0,0 +1,426 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "descriptors_names.h"
+
+#include "android-base/stringprintf.h"
+#include "android-base/strings.h"
+
+#include "dex/utf-inl.h"
+
+namespace art_lkchan {
+
+using android_lkchan::base::StringAppendF;
+using android_lkchan::base::StringPrintf;
+
+void AppendPrettyDescriptor(const char* descriptor, std::string* result) {
+  // Count the number of '['s to get the dimensionality.
+  const char* c = descriptor;
+  size_t dim = 0;
+  while (*c == '[') {
+    dim++;
+    c++;
+  }
+
+  // Reference or primitive?
+  if (*c == 'L') {
+    // "[[La/b/C;" -> "a.b.C[][]".
+    c++;  // Skip the 'L'.
+  } else {
+    // "[[B" -> "byte[][]".
+    // To make life easier, we make primitives look like unqualified
+    // reference types.
+    switch (*c) {
+      case 'B': c = "byte;"; break;
+      case 'C': c = "char;"; break;
+      case 'D': c = "double;"; break;
+      case 'F': c = "float;"; break;
+      case 'I': c = "int;"; break;
+      case 'J': c = "long;"; break;
+      case 'S': c = "short;"; break;
+      case 'Z': c = "boolean;"; break;
+      case 'V': c = "void;"; break;  // Used when decoding return types.
+      default: result->append(descriptor); return;
+    }
+  }
+
+  // At this point, 'c' is a string of the form "fully/qualified/Type;"
+  // or "primitive;". Rewrite the type with '.' instead of '/':
+  const char* p = c;
+  while (*p != ';') {
+    char ch = *p++;
+    if (ch == '/') {
+      ch = '.';
+    }
+    result->push_back(ch);
+  }
+  // ...and replace the semicolon with 'dim' "[]" pairs:
+  for (size_t i = 0; i < dim; ++i) {
+    result->append("[]");
+  }
+}
+
+std::string PrettyDescriptor(const char* descriptor) {
+  std::string result;
+  AppendPrettyDescriptor(descriptor, &result);
+  return result;
+}
+
+std::string GetJniShortName(const std::string& class_descriptor, const std::string& method) {
+  // Remove the leading 'L' and trailing ';'...
+  std::string class_name(class_descriptor);
+  CHECK_EQ(class_name[0], 'L') << class_name;
+  CHECK_EQ(class_name[class_name.size() - 1], ';') << class_name;
+  class_name.erase(0, 1);
+  class_name.erase(class_name.size() - 1, 1);
+
+  std::string short_name;
+  short_name += "Java_";
+  short_name += MangleForJni(class_name);
+  short_name += "_";
+  short_name += MangleForJni(method);
+  return short_name;
+}
+
+// See http://java.sun.com/j2se/1.5.0/docs/guide/jni/spec/design.html#wp615 for the full rules.
+std::string MangleForJni(const std::string& s) {
+  std::string result;
+  size_t char_count = CountModifiedUtf8Chars(s.c_str());
+  const char* cp = &s[0];
+  for (size_t i = 0; i < char_count; ++i) {
+    uint32_t ch = GetUtf16FromUtf8(&cp);
+    if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9')) {
+      result.push_back(ch);
+    } else if (ch == '.' || ch == '/') {
+      result += "_";
+    } else if (ch == '_') {
+      result += "_1";
+    } else if (ch == ';') {
+      result += "_2";
+    } else if (ch == '[') {
+      result += "_3";
+    } else {
+      const uint16_t leading = GetLeadingUtf16Char(ch);
+      const uint32_t trailing = GetTrailingUtf16Char(ch);
+
+      StringAppendF(&result, "_0%04x", leading);
+      if (trailing != 0) {
+        StringAppendF(&result, "_0%04x", trailing);
+      }
+    }
+  }
+  return result;
+}
+
+std::string DotToDescriptor(const char* class_name) {
+  std::string descriptor(class_name);
+  std::replace(descriptor.begin(), descriptor.end(), '.', '/');
+  if (descriptor.length() > 0 && descriptor[0] != '[') {
+    descriptor = "L" + descriptor + ";";
+  }
+  return descriptor;
+}
+
+std::string DescriptorToDot(const char* descriptor) {
+  size_t length = strlen(descriptor);
+  if (length > 1) {
+    if (descriptor[0] == 'L' && descriptor[length - 1] == ';') {
+      // Descriptors have the leading 'L' and trailing ';' stripped.
+      std::string result(descriptor + 1, length - 2);
+      std::replace(result.begin(), result.end(), '/', '.');
+      return result;
+    } else {
+      // For arrays the 'L' and ';' remain intact.
+      std::string result(descriptor);
+      std::replace(result.begin(), result.end(), '/', '.');
+      return result;
+    }
+  }
+  // Do nothing for non-class/array descriptors.
+  return descriptor;
+}
+
+std::string DescriptorToName(const char* descriptor) {
+  size_t length = strlen(descriptor);
+  if (descriptor[0] == 'L' && descriptor[length - 1] == ';') {
+    std::string result(descriptor + 1, length - 2);
+    return result;
+  }
+  return descriptor;
+}
+
+// Helper for IsValidPartOfMemberNameUtf8(), a bit vector indicating valid low ascii.
+static uint32_t DEX_MEMBER_VALID_LOW_ASCII[4] = {
+  0x00000000,  // 00..1f low control characters; nothing valid
+  0x03ff2010,  // 20..3f digits and symbols; valid: '0'..'9', '$', '-'
+  0x87fffffe,  // 40..5f uppercase etc.; valid: 'A'..'Z', '_'
+  0x07fffffe   // 60..7f lowercase etc.; valid: 'a'..'z'
+};
+
+// Helper for IsValidPartOfMemberNameUtf8(); do not call directly.
+static bool IsValidPartOfMemberNameUtf8Slow(const char** pUtf8Ptr) {
+  /*
+   * It's a multibyte encoded character. Decode it and analyze. We
+   * accept anything that isn't (a) an improperly encoded low value,
+   * (b) an improper surrogate pair, (c) an encoded '\0', (d) a high
+   * control character, or (e) a high space, layout, or special
+   * character (U+00a0, U+2000..U+200f, U+2028..U+202f,
+   * U+fff0..U+ffff). This is all specified in the dex format
+   * document.
+   */
+
+  const uint32_t pair = GetUtf16FromUtf8(pUtf8Ptr);
+  const uint16_t leading = GetLeadingUtf16Char(pair);
+
+  // We have a surrogate pair resulting from a valid 4 byte UTF sequence.
+  // No further checks are necessary because 4 byte sequences span code
+  // points [U+10000, U+1FFFFF], which are valid codepoints in a dex
+  // identifier. Furthermore, GetUtf16FromUtf8 guarantees that each of
+  // the surrogate halves are valid and well formed in this instance.
+  if (GetTrailingUtf16Char(pair) != 0) {
+    return true;
+  }
+
+
+  // We've encountered a one, two or three byte UTF-8 sequence. The
+  // three byte UTF-8 sequence could be one half of a surrogate pair.
+  switch (leading >> 8) {
+    case 0x00:
+      // It's only valid if it's above the ISO-8859-1 high space (0xa0).
+      return (leading > 0x00a0);
+    case 0xd8:
+    case 0xd9:
+    case 0xda:
+    case 0xdb:
+      {
+        // We found a three byte sequence encoding one half of a surrogate.
+        // Look for the other half.
+        const uint32_t pair2 = GetUtf16FromUtf8(pUtf8Ptr);
+        const uint16_t trailing = GetLeadingUtf16Char(pair2);
+
+        return (GetTrailingUtf16Char(pair2) == 0) && (0xdc00 <= trailing && trailing <= 0xdfff);
+      }
+    case 0xdc:
+    case 0xdd:
+    case 0xde:
+    case 0xdf:
+      // It's a trailing surrogate, which is not valid at this point.
+      return false;
+    case 0x20:
+    case 0xff:
+      // It's in the range that has spaces, controls, and specials.
+      switch (leading & 0xfff8) {
+        case 0x2000:
+        case 0x2008:
+        case 0x2028:
+        case 0xfff0:
+        case 0xfff8:
+          return false;
+      }
+      return true;
+    default:
+      return true;
+  }
+
+  UNREACHABLE();
+}
+
+/* Return whether the pointed-at modified-UTF-8 encoded character is
+ * valid as part of a member name, updating the pointer to point past
+ * the consumed character. This will consume two encoded UTF-16 code
+ * points if the character is encoded as a surrogate pair. Also, if
+ * this function returns false, then the given pointer may only have
+ * been partially advanced.
+ */
+static bool IsValidPartOfMemberNameUtf8(const char** pUtf8Ptr) {
+  uint8_t c = (uint8_t) **pUtf8Ptr;
+  if (LIKELY(c <= 0x7f)) {
+    // It's low-ascii, so check the table.
+    uint32_t wordIdx = c >> 5;
+    uint32_t bitIdx = c & 0x1f;
+    (*pUtf8Ptr)++;
+    return (DEX_MEMBER_VALID_LOW_ASCII[wordIdx] & (1 << bitIdx)) != 0;
+  }
+
+  // It's a multibyte encoded character. Call a non-inline function
+  // for the heavy lifting.
+  return IsValidPartOfMemberNameUtf8Slow(pUtf8Ptr);
+}
+
+bool IsValidMemberName(const char* s) {
+  bool angle_name = false;
+
+  switch (*s) {
+    case '\0':
+      // The empty string is not a valid name.
+      return false;
+    case '<':
+      angle_name = true;
+      s++;
+      break;
+  }
+
+  while (true) {
+    switch (*s) {
+      case '\0':
+        return !angle_name;
+      case '>':
+        return angle_name && s[1] == '\0';
+    }
+
+    if (!IsValidPartOfMemberNameUtf8(&s)) {
+      return false;
+    }
+  }
+}
+
+enum ClassNameType { kName, kDescriptor };
+template<ClassNameType kType, char kSeparator>
+static bool IsValidClassName(const char* s) {
+  int arrayCount = 0;
+  while (*s == '[') {
+    arrayCount++;
+    s++;
+  }
+
+  if (arrayCount > 255) {
+    // Arrays may have no more than 255 dimensions.
+    return false;
+  }
+
+  ClassNameType type = kType;
+  if (type != kDescriptor && arrayCount != 0) {
+    /*
+     * If we're looking at an array of some sort, then it doesn't
+     * matter if what is being asked for is a class name; the
+     * format looks the same as a type descriptor in that case, so
+     * treat it as such.
+     */
+    type = kDescriptor;
+  }
+
+  if (type == kDescriptor) {
+    /*
+     * We are looking for a descriptor. Either validate it as a
+     * single-character primitive type, or continue on to check the
+     * embedded class name (bracketed by "L" and ";").
+     */
+    switch (*(s++)) {
+    case 'B':
+    case 'C':
+    case 'D':
+    case 'F':
+    case 'I':
+    case 'J':
+    case 'S':
+    case 'Z':
+      // These are all single-character descriptors for primitive types.
+      return (*s == '\0');
+    case 'V':
+      // Non-array void is valid, but you can't have an array of void.
+      return (arrayCount == 0) && (*s == '\0');
+    case 'L':
+      // Class name: Break out and continue below.
+      break;
+    default:
+      // Oddball descriptor character.
+      return false;
+    }
+  }
+
+  /*
+   * We just consumed the 'L' that introduces a class name as part
+   * of a type descriptor, or we are looking for an unadorned class
+   * name.
+   */
+
+  bool sepOrFirst = true;  // first character or just encountered a separator.
+  for (;;) {
+    uint8_t c = (uint8_t) *s;
+    switch (c) {
+    case '\0':
+      /*
+       * Premature end for a type descriptor, but valid for
+       * a class name as long as we haven't encountered an
+       * empty component (including the degenerate case of
+       * the empty string "").
+       */
+      return (type == kName) && !sepOrFirst;
+    case ';':
+      /*
+       * Invalid character for a class name, but the
+       * legitimate end of a type descriptor. In the latter
+       * case, make sure that this is the end of the string
+       * and that it doesn't end with an empty component
+       * (including the degenerate case of "L;").
+       */
+      return (type == kDescriptor) && !sepOrFirst && (s[1] == '\0');
+    case '/':
+    case '.':
+      if (c != kSeparator) {
+        // The wrong separator character.
+        return false;
+      }
+      if (sepOrFirst) {
+        // Separator at start or two separators in a row.
+        return false;
+      }
+      sepOrFirst = true;
+      s++;
+      break;
+    default:
+      if (!IsValidPartOfMemberNameUtf8(&s)) {
+        return false;
+      }
+      sepOrFirst = false;
+      break;
+    }
+  }
+}
+
+bool IsValidBinaryClassName(const char* s) {
+  return IsValidClassName<kName, '.'>(s);
+}
+
+bool IsValidJniClassName(const char* s) {
+  return IsValidClassName<kName, '/'>(s);
+}
+
+bool IsValidDescriptor(const char* s) {
+  return IsValidClassName<kDescriptor, '/'>(s);
+}
+
+void Split(const std::string& s, char separator, std::vector<std::string>* result) {
+  const char* p = s.data();
+  const char* end = p + s.size();
+  while (p != end) {
+    if (*p == separator) {
+      ++p;
+    } else {
+      const char* start = p;
+      while (++p != end && *p != separator) {
+        // Skip to the next occurrence of the separator.
+      }
+      result->push_back(std::string(start, p - start));
+    }
+  }
+}
+
+std::string PrettyDescriptor(Primitive::Type type) {
+  return PrettyDescriptor(Primitive::Descriptor(type));
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/descriptors_names.h

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DESCRIPTORS_NAMES_H_
+#define ART_LIBDEXFILE_DEX_DESCRIPTORS_NAMES_H_
+
+#include <string>
+
+#include "dex/primitive.h"
+
+namespace art_lkchan {
+
+// Used to implement PrettyClass, PrettyField, PrettyMethod, and PrettyTypeOf,
+// one of which is probably more useful to you.
+// Returns a human-readable equivalent of 'descriptor'. So "I" would be "int",
+// "[[I" would be "int[][]", "[Ljava/lang/String;" would be
+// "java.lang.String[]", and so forth.
+void AppendPrettyDescriptor(const char* descriptor, std::string* result);
+std::string PrettyDescriptor(const char* descriptor);
+std::string PrettyDescriptor(Primitive::Type type);
+
+// Performs JNI name mangling as described in section 11.3 "Linking Native Methods"
+// of the JNI spec.
+std::string MangleForJni(const std::string& s);
+
+std::string GetJniShortName(const std::string& class_name, const std::string& method_name);
+
+// Turn "java.lang.String" into "Ljava/lang/String;".
+std::string DotToDescriptor(const char* class_name);
+
+// Turn "Ljava/lang/String;" into "java.lang.String" using the conventions of
+// java.lang.Class.getName().
+std::string DescriptorToDot(const char* descriptor);
+
+// Turn "Ljava/lang/String;" into "java/lang/String" using the opposite conventions of
+// java.lang.Class.getName().
+std::string DescriptorToName(const char* descriptor);
+
+// Tests for whether 's' is a valid class name in the three common forms:
+bool IsValidBinaryClassName(const char* s);  // "java.lang.String"
+bool IsValidJniClassName(const char* s);     // "java/lang/String"
+bool IsValidDescriptor(const char* s);       // "Ljava/lang/String;"
+
+// Returns whether the given string is a valid field or method name,
+// additionally allowing names that begin with '<' and end with '>'.
+bool IsValidMemberName(const char* s);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DESCRIPTORS_NAMES_H_

Bcore/src/main/cpp/dex/dex_cache_resolved_classes.h

@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_CACHE_RESOLVED_CLASSES_H_
+#define ART_LIBDEXFILE_DEX_DEX_CACHE_RESOLVED_CLASSES_H_
+
+#include <string>
+#include <unordered_set>
+#include <vector>
+
+#include "dex/dex_file_types.h"
+
+namespace art_lkchan {
+
+// Data structure for passing around which classes belonging to a dex cache / dex file are resolved.
+class DexCacheResolvedClasses {
+ public:
+  DexCacheResolvedClasses(const std::string& dex_location,
+                          const std::string& base_location,
+                          uint32_t location_checksum,
+                          uint32_t num_method_ids)
+      : dex_location_(dex_location),
+        base_location_(base_location),
+        location_checksum_(location_checksum),
+        num_method_ids_(num_method_ids) {}
+
+  // Only compare the key elements, ignore the resolved classes.
+  int Compare(const DexCacheResolvedClasses& other) const {
+    if (location_checksum_ != other.location_checksum_) {
+      return static_cast<int>(location_checksum_ - other.location_checksum_);
+    }
+    // Don't need to compare base_location_ since dex_location_ has more info.
+    return dex_location_.compare(other.dex_location_);
+  }
+
+  bool AddClass(dex::TypeIndex index) const {
+    return classes_.insert(index).second;
+  }
+
+  template <class InputIt>
+  void AddClasses(InputIt begin, InputIt end) const {
+    classes_.insert(begin, end);
+  }
+
+  const std::string& GetDexLocation() const {
+    return dex_location_;
+  }
+
+  const std::string& GetBaseLocation() const {
+    return base_location_;
+  }
+
+  uint32_t GetLocationChecksum() const {
+    return location_checksum_;
+  }
+
+  const std::unordered_set<dex::TypeIndex>& GetClasses() const {
+    return classes_;
+  }
+
+  size_t NumMethodIds() const {
+    return num_method_ids_;
+  }
+
+ private:
+  const std::string dex_location_;
+  const std::string base_location_;
+  const uint32_t location_checksum_;
+  const uint32_t num_method_ids_;
+  // Array of resolved class def indexes.
+  mutable std::unordered_set<dex::TypeIndex> classes_;
+};
+
+inline bool operator<(const DexCacheResolvedClasses& a, const DexCacheResolvedClasses& b) {
+  return a.Compare(b) < 0;
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_CACHE_RESOLVED_CLASSES_H_

Bcore/src/main/cpp/dex/dex_file-inl.h

@@ -0,0 +1,532 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_INL_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_INL_H_
+
+#include "base/casts.h"
+#include "base/leb128.h"
+#include "base/stringpiece.h"
+#include "compact_dex_file.h"
+#include "dex_file.h"
+#include "invoke_type.h"
+#include "standard_dex_file.h"
+
+namespace art_lkchan {
+
+inline int32_t DexFile::GetStringLength(const StringId& string_id) const {
+  const uint8_t* ptr = DataBegin() + string_id.string_data_off_;
+  return DecodeUnsignedLeb128(&ptr);
+}
+
+inline const char* DexFile::GetStringDataAndUtf16Length(const StringId& string_id,
+                                                        uint32_t* utf16_length) const {
+  DCHECK(utf16_length != nullptr) << GetLocation();
+  const uint8_t* ptr = DataBegin() + string_id.string_data_off_;
+  *utf16_length = DecodeUnsignedLeb128(&ptr);
+  return reinterpret_cast<const char*>(ptr);
+}
+
+inline const char* DexFile::GetStringData(const StringId& string_id) const {
+  uint32_t ignored;
+  return GetStringDataAndUtf16Length(string_id, &ignored);
+}
+
+inline const char* DexFile::StringDataAndUtf16LengthByIdx(dex::StringIndex idx,
+                                                          uint32_t* utf16_length) const {
+  if (!idx.IsValid()) {
+    *utf16_length = 0;
+    return nullptr;
+  }
+  const StringId& string_id = GetStringId(idx);
+  return GetStringDataAndUtf16Length(string_id, utf16_length);
+}
+
+inline const char* DexFile::StringDataByIdx(dex::StringIndex idx) const {
+  uint32_t unicode_length;
+  return StringDataAndUtf16LengthByIdx(idx, &unicode_length);
+}
+
+inline const char* DexFile::StringByTypeIdx(dex::TypeIndex idx, uint32_t* unicode_length) const {
+  if (!idx.IsValid()) {
+    return nullptr;
+  }
+  const TypeId& type_id = GetTypeId(idx);
+  return StringDataAndUtf16LengthByIdx(type_id.descriptor_idx_, unicode_length);
+}
+
+inline const char* DexFile::StringByTypeIdx(dex::TypeIndex idx) const {
+  if (!idx.IsValid()) {
+    return nullptr;
+  }
+  const TypeId& type_id = GetTypeId(idx);
+  return StringDataByIdx(type_id.descriptor_idx_);
+}
+
+inline const char* DexFile::GetTypeDescriptor(const TypeId& type_id) const {
+  return StringDataByIdx(type_id.descriptor_idx_);
+}
+
+inline const char* DexFile::GetFieldTypeDescriptor(const FieldId& field_id) const {
+  const DexFile::TypeId& type_id = GetTypeId(field_id.type_idx_);
+  return GetTypeDescriptor(type_id);
+}
+
+inline const char* DexFile::GetFieldName(const FieldId& field_id) const {
+  return StringDataByIdx(field_id.name_idx_);
+}
+
+inline const char* DexFile::GetMethodDeclaringClassDescriptor(const MethodId& method_id) const {
+  const DexFile::TypeId& type_id = GetTypeId(method_id.class_idx_);
+  return GetTypeDescriptor(type_id);
+}
+
+inline const Signature DexFile::GetMethodSignature(const MethodId& method_id) const {
+  return Signature(this, GetProtoId(method_id.proto_idx_));
+}
+
+inline const Signature DexFile::GetProtoSignature(const ProtoId& proto_id) const {
+  return Signature(this, proto_id);
+}
+
+inline const char* DexFile::GetMethodName(const MethodId& method_id) const {
+  return StringDataByIdx(method_id.name_idx_);
+}
+
+inline const char* DexFile::GetMethodShorty(uint32_t idx) const {
+  return StringDataByIdx(GetProtoId(GetMethodId(idx).proto_idx_).shorty_idx_);
+}
+
+inline const char* DexFile::GetMethodShorty(const MethodId& method_id) const {
+  return StringDataByIdx(GetProtoId(method_id.proto_idx_).shorty_idx_);
+}
+
+inline const char* DexFile::GetMethodShorty(const MethodId& method_id, uint32_t* length) const {
+  // Using the UTF16 length is safe here as shorties are guaranteed to be ASCII characters.
+  return StringDataAndUtf16LengthByIdx(GetProtoId(method_id.proto_idx_).shorty_idx_, length);
+}
+
+inline const char* DexFile::GetClassDescriptor(const ClassDef& class_def) const {
+  return StringByTypeIdx(class_def.class_idx_);
+}
+
+inline const char* DexFile::GetReturnTypeDescriptor(const ProtoId& proto_id) const {
+  return StringByTypeIdx(proto_id.return_type_idx_);
+}
+
+inline const char* DexFile::GetShorty(uint32_t proto_idx) const {
+  const ProtoId& proto_id = GetProtoId(proto_idx);
+  return StringDataByIdx(proto_id.shorty_idx_);
+}
+
+inline const DexFile::TryItem* DexFile::GetTryItems(const DexInstructionIterator& code_item_end,
+                                                    uint32_t offset) {
+  return reinterpret_cast<const TryItem*>
+      (RoundUp(reinterpret_cast<uintptr_t>(&code_item_end.Inst()), TryItem::kAlignment)) + offset;
+}
+
+static inline bool DexFileStringEquals(const DexFile* df1, dex::StringIndex sidx1,
+                                       const DexFile* df2, dex::StringIndex sidx2) {
+  uint32_t s1_len;  // Note: utf16 length != mutf8 length.
+  const char* s1_data = df1->StringDataAndUtf16LengthByIdx(sidx1, &s1_len);
+  uint32_t s2_len;
+  const char* s2_data = df2->StringDataAndUtf16LengthByIdx(sidx2, &s2_len);
+  return (s1_len == s2_len) && (strcmp(s1_data, s2_data) == 0);
+}
+
+inline bool Signature::operator==(const Signature& rhs) const {
+  if (dex_file_ == nullptr) {
+    return rhs.dex_file_ == nullptr;
+  }
+  if (rhs.dex_file_ == nullptr) {
+    return false;
+  }
+  if (dex_file_ == rhs.dex_file_) {
+    return proto_id_ == rhs.proto_id_;
+  }
+  uint32_t lhs_shorty_len;  // For a shorty utf16 length == mutf8 length.
+  const char* lhs_shorty_data = dex_file_->StringDataAndUtf16LengthByIdx(proto_id_->shorty_idx_,
+                                                                         &lhs_shorty_len);
+  StringPiece lhs_shorty(lhs_shorty_data, lhs_shorty_len);
+  {
+    uint32_t rhs_shorty_len;
+    const char* rhs_shorty_data =
+        rhs.dex_file_->StringDataAndUtf16LengthByIdx(rhs.proto_id_->shorty_idx_,
+                                                     &rhs_shorty_len);
+    StringPiece rhs_shorty(rhs_shorty_data, rhs_shorty_len);
+    if (lhs_shorty != rhs_shorty) {
+      return false;  // Shorty mismatch.
+    }
+  }
+  if (lhs_shorty[0] == 'L') {
+    const DexFile::TypeId& return_type_id = dex_file_->GetTypeId(proto_id_->return_type_idx_);
+    const DexFile::TypeId& rhs_return_type_id =
+        rhs.dex_file_->GetTypeId(rhs.proto_id_->return_type_idx_);
+    if (!DexFileStringEquals(dex_file_, return_type_id.descriptor_idx_,
+                             rhs.dex_file_, rhs_return_type_id.descriptor_idx_)) {
+      return false;  // Return type mismatch.
+    }
+  }
+  if (lhs_shorty.find('L', 1) != StringPiece::npos) {
+    const DexFile::TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
+    const DexFile::TypeList* rhs_params = rhs.dex_file_->GetProtoParameters(*rhs.proto_id_);
+    // We found a reference parameter in the matching shorty, so both lists must be non-empty.
+    DCHECK(params != nullptr);
+    DCHECK(rhs_params != nullptr);
+    uint32_t params_size = params->Size();
+    DCHECK_EQ(params_size, rhs_params->Size());  // Parameter list size must match.
+    for (uint32_t i = 0; i < params_size; ++i) {
+      const DexFile::TypeId& param_id = dex_file_->GetTypeId(params->GetTypeItem(i).type_idx_);
+      const DexFile::TypeId& rhs_param_id =
+          rhs.dex_file_->GetTypeId(rhs_params->GetTypeItem(i).type_idx_);
+      if (!DexFileStringEquals(dex_file_, param_id.descriptor_idx_,
+                               rhs.dex_file_, rhs_param_id.descriptor_idx_)) {
+        return false;  // Parameter type mismatch.
+      }
+    }
+  }
+  return true;
+}
+
+inline
+InvokeType ClassDataItemIterator::GetMethodInvokeType(const DexFile::ClassDef& class_def) const {
+  if (HasNextDirectMethod()) {
+    if ((GetRawMemberAccessFlags() & kAccStatic) != 0) {
+      return kStatic;
+    } else {
+      return kDirect;
+    }
+  } else {
+    DCHECK_EQ(GetRawMemberAccessFlags() & kAccStatic, 0U);
+    if ((class_def.access_flags_ & kAccInterface) != 0) {
+      return kInterface;
+    } else if ((GetRawMemberAccessFlags() & kAccConstructor) != 0) {
+      return kSuper;
+    } else {
+      return kVirtual;
+    }
+  }
+}
+
+template<typename NewLocalCallback, typename IndexToStringData, typename TypeIndexToStringData>
+bool DexFile::DecodeDebugLocalInfo(const uint8_t* stream,
+                                   const std::string& location,
+                                   const char* declaring_class_descriptor,
+                                   const std::vector<const char*>& arg_descriptors,
+                                   const std::string& method_name,
+                                   bool is_static,
+                                   uint16_t registers_size,
+                                   uint16_t ins_size,
+                                   uint16_t insns_size_in_code_units,
+                                   IndexToStringData index_to_string_data,
+                                   TypeIndexToStringData type_index_to_string_data,
+                                   NewLocalCallback new_local_callback,
+                                   void* context) {
+  if (stream == nullptr) {
+    return false;
+  }
+  std::vector<LocalInfo> local_in_reg(registers_size);
+
+  uint16_t arg_reg = registers_size - ins_size;
+  if (!is_static) {
+    const char* descriptor = declaring_class_descriptor;
+    local_in_reg[arg_reg].name_ = "this";
+    local_in_reg[arg_reg].descriptor_ = descriptor;
+    local_in_reg[arg_reg].signature_ = nullptr;
+    local_in_reg[arg_reg].start_address_ = 0;
+    local_in_reg[arg_reg].reg_ = arg_reg;
+    local_in_reg[arg_reg].is_live_ = true;
+    arg_reg++;
+  }
+
+  DecodeUnsignedLeb128(&stream);  // Line.
+  uint32_t parameters_size = DecodeUnsignedLeb128(&stream);
+  uint32_t i;
+  if (parameters_size != arg_descriptors.size()) {
+    LOG(ERROR) << "invalid stream - problem with parameter iterator in " << location
+               << " for method " << method_name;
+    return false;
+  }
+  for (i = 0; i < parameters_size && i < arg_descriptors.size(); ++i) {
+    if (arg_reg >= registers_size) {
+      LOG(ERROR) << "invalid stream - arg reg >= reg size (" << arg_reg
+                 << " >= " << registers_size << ") in " << location;
+      return false;
+    }
+    uint32_t name_idx = DecodeUnsignedLeb128P1(&stream);
+    const char* descriptor = arg_descriptors[i];
+    local_in_reg[arg_reg].name_ = index_to_string_data(name_idx);
+    local_in_reg[arg_reg].descriptor_ = descriptor;
+    local_in_reg[arg_reg].signature_ = nullptr;
+    local_in_reg[arg_reg].start_address_ = 0;
+    local_in_reg[arg_reg].reg_ = arg_reg;
+    local_in_reg[arg_reg].is_live_ = true;
+    switch (*descriptor) {
+      case 'D':
+      case 'J':
+        arg_reg += 2;
+        break;
+      default:
+        arg_reg += 1;
+        break;
+    }
+  }
+
+  uint32_t address = 0;
+  for (;;)  {
+    uint8_t opcode = *stream++;
+    switch (opcode) {
+      case DBG_END_SEQUENCE:
+        // Emit all variables which are still alive at the end of the method.
+        for (uint16_t reg = 0; reg < registers_size; reg++) {
+          if (local_in_reg[reg].is_live_) {
+            local_in_reg[reg].end_address_ = insns_size_in_code_units;
+            new_local_callback(context, local_in_reg[reg]);
+          }
+        }
+        return true;
+      case DBG_ADVANCE_PC:
+        address += DecodeUnsignedLeb128(&stream);
+        break;
+      case DBG_ADVANCE_LINE:
+        DecodeSignedLeb128(&stream);  // Line.
+        break;
+      case DBG_START_LOCAL:
+      case DBG_START_LOCAL_EXTENDED: {
+        uint16_t reg = DecodeUnsignedLeb128(&stream);
+        if (reg >= registers_size) {
+          LOG(ERROR) << "invalid stream - reg >= reg size (" << reg << " >= "
+                     << registers_size << ") in " << location;
+          return false;
+        }
+
+        uint32_t name_idx = DecodeUnsignedLeb128P1(&stream);
+        uint16_t descriptor_idx = DecodeUnsignedLeb128P1(&stream);
+        uint32_t signature_idx = dex::kDexNoIndex;
+        if (opcode == DBG_START_LOCAL_EXTENDED) {
+          signature_idx = DecodeUnsignedLeb128P1(&stream);
+        }
+
+        // Emit what was previously there, if anything
+        if (local_in_reg[reg].is_live_) {
+          local_in_reg[reg].end_address_ = address;
+          new_local_callback(context, local_in_reg[reg]);
+        }
+
+        local_in_reg[reg].name_ = index_to_string_data(name_idx);
+        local_in_reg[reg].descriptor_ = type_index_to_string_data(descriptor_idx);;
+        local_in_reg[reg].signature_ = index_to_string_data(signature_idx);
+        local_in_reg[reg].start_address_ = address;
+        local_in_reg[reg].reg_ = reg;
+        local_in_reg[reg].is_live_ = true;
+        break;
+      }
+      case DBG_END_LOCAL: {
+        uint16_t reg = DecodeUnsignedLeb128(&stream);
+        if (reg >= registers_size) {
+          LOG(ERROR) << "invalid stream - reg >= reg size (" << reg << " >= "
+                     << registers_size << ") in " << location;
+          return false;
+        }
+        // If the register is live, close it properly. Otherwise, closing an already
+        // closed register is sloppy, but harmless if no further action is taken.
+        if (local_in_reg[reg].is_live_) {
+          local_in_reg[reg].end_address_ = address;
+          new_local_callback(context, local_in_reg[reg]);
+          local_in_reg[reg].is_live_ = false;
+        }
+        break;
+      }
+      case DBG_RESTART_LOCAL: {
+        uint16_t reg = DecodeUnsignedLeb128(&stream);
+        if (reg >= registers_size) {
+          LOG(ERROR) << "invalid stream - reg >= reg size (" << reg << " >= "
+                     << registers_size << ") in " << location;
+          return false;
+        }
+        // If the register is live, the "restart" is superfluous,
+        // and we don't want to mess with the existing start address.
+        if (!local_in_reg[reg].is_live_) {
+          local_in_reg[reg].start_address_ = address;
+          local_in_reg[reg].is_live_ = true;
+        }
+        break;
+      }
+      case DBG_SET_PROLOGUE_END:
+      case DBG_SET_EPILOGUE_BEGIN:
+        break;
+      case DBG_SET_FILE:
+        DecodeUnsignedLeb128P1(&stream);  // name.
+        break;
+      default:
+        address += (opcode - DBG_FIRST_SPECIAL) / DBG_LINE_RANGE;
+        break;
+    }
+  }
+}
+
+template<typename NewLocalCallback>
+bool DexFile::DecodeDebugLocalInfo(uint32_t registers_size,
+                                   uint32_t ins_size,
+                                   uint32_t insns_size_in_code_units,
+                                   uint32_t debug_info_offset,
+                                   bool is_static,
+                                   uint32_t method_idx,
+                                   NewLocalCallback new_local_callback,
+                                   void* context) const {
+  const uint8_t* const stream = GetDebugInfoStream(debug_info_offset);
+  if (stream == nullptr) {
+    return false;
+  }
+  std::vector<const char*> arg_descriptors;
+  DexFileParameterIterator it(*this, GetMethodPrototype(GetMethodId(method_idx)));
+  for (; it.HasNext(); it.Next()) {
+    arg_descriptors.push_back(it.GetDescriptor());
+  }
+  return DecodeDebugLocalInfo(stream,
+                              GetLocation(),
+                              GetMethodDeclaringClassDescriptor(GetMethodId(method_idx)),
+                              arg_descriptors,
+                              this->PrettyMethod(method_idx),
+                              is_static,
+                              registers_size,
+                              ins_size,
+                              insns_size_in_code_units,
+                              [this](uint32_t idx) {
+                                return StringDataByIdx(dex::StringIndex(idx));
+                              },
+                              [this](uint32_t idx) {
+                                return StringByTypeIdx(dex::TypeIndex(
+                                    dchecked_integral_cast<uint16_t>(idx)));
+                              },
+                              new_local_callback,
+                              context);
+}
+
+template<typename DexDebugNewPosition, typename IndexToStringData>
+bool DexFile::DecodeDebugPositionInfo(const uint8_t* stream,
+                                      IndexToStringData index_to_string_data,
+                                      DexDebugNewPosition position_functor,
+                                      void* context) {
+  if (stream == nullptr) {
+    return false;
+  }
+
+  PositionInfo entry = PositionInfo();
+  entry.line_ = DecodeUnsignedLeb128(&stream);
+  uint32_t parameters_size = DecodeUnsignedLeb128(&stream);
+  for (uint32_t i = 0; i < parameters_size; ++i) {
+    DecodeUnsignedLeb128P1(&stream);  // Parameter name.
+  }
+
+  for (;;)  {
+    uint8_t opcode = *stream++;
+    switch (opcode) {
+      case DBG_END_SEQUENCE:
+        return true;  // end of stream.
+      case DBG_ADVANCE_PC:
+        entry.address_ += DecodeUnsignedLeb128(&stream);
+        break;
+      case DBG_ADVANCE_LINE:
+        entry.line_ += DecodeSignedLeb128(&stream);
+        break;
+      case DBG_START_LOCAL:
+        DecodeUnsignedLeb128(&stream);  // reg.
+        DecodeUnsignedLeb128P1(&stream);  // name.
+        DecodeUnsignedLeb128P1(&stream);  // descriptor.
+        break;
+      case DBG_START_LOCAL_EXTENDED:
+        DecodeUnsignedLeb128(&stream);  // reg.
+        DecodeUnsignedLeb128P1(&stream);  // name.
+        DecodeUnsignedLeb128P1(&stream);  // descriptor.
+        DecodeUnsignedLeb128P1(&stream);  // signature.
+        break;
+      case DBG_END_LOCAL:
+      case DBG_RESTART_LOCAL:
+        DecodeUnsignedLeb128(&stream);  // reg.
+        break;
+      case DBG_SET_PROLOGUE_END:
+        entry.prologue_end_ = true;
+        break;
+      case DBG_SET_EPILOGUE_BEGIN:
+        entry.epilogue_begin_ = true;
+        break;
+      case DBG_SET_FILE: {
+        uint32_t name_idx = DecodeUnsignedLeb128P1(&stream);
+        entry.source_file_ = index_to_string_data(name_idx);
+        break;
+      }
+      default: {
+        int adjopcode = opcode - DBG_FIRST_SPECIAL;
+        entry.address_ += adjopcode / DBG_LINE_RANGE;
+        entry.line_ += DBG_LINE_BASE + (adjopcode % DBG_LINE_RANGE);
+        if (position_functor(context, entry)) {
+          return true;  // early exit.
+        }
+        entry.prologue_end_ = false;
+        entry.epilogue_begin_ = false;
+        break;
+      }
+    }
+  }
+}
+
+template<typename DexDebugNewPosition>
+bool DexFile::DecodeDebugPositionInfo(uint32_t debug_info_offset,
+                                      DexDebugNewPosition position_functor,
+                                      void* context) const {
+  return DecodeDebugPositionInfo(GetDebugInfoStream(debug_info_offset),
+                                 [this](uint32_t idx) {
+                                   return StringDataByIdx(dex::StringIndex(idx));
+                                 },
+                                 position_functor,
+                                 context);
+}
+
+inline const CompactDexFile* DexFile::AsCompactDexFile() const {
+  DCHECK(IsCompactDexFile());
+  return down_cast<const CompactDexFile*>(this);
+}
+
+inline const StandardDexFile* DexFile::AsStandardDexFile() const {
+  DCHECK(IsStandardDexFile());
+  return down_cast<const StandardDexFile*>(this);
+}
+
+// Get the base of the encoded data for the given DexCode.
+inline const uint8_t* DexFile::GetCatchHandlerData(const DexInstructionIterator& code_item_end,
+                                                   uint32_t tries_size,
+                                                   uint32_t offset) {
+  const uint8_t* handler_data =
+      reinterpret_cast<const uint8_t*>(GetTryItems(code_item_end, tries_size));
+  return handler_data + offset;
+}
+
+template <typename Visitor>
+inline void DexFile::ClassDef::VisitMethods(const DexFile* dex_file, const Visitor& visitor) const {
+  const uint8_t* class_data = dex_file->GetClassData(*this);
+  if (class_data != nullptr) {
+    ClassDataItemIterator it(*dex_file, class_data);
+    it.SkipAllFields();
+    for (; it.HasNext(); it.Next()) {
+      visitor(it);
+    }
+  }
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_INL_H_

Bcore/src/main/cpp/dex/dex_file.cc

@@ -0,0 +1,817 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex_file.h"
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <zlib.h>
+
+#include <memory>
+#include <sstream>
+#include <type_traits>
+
+#include "android-base/stringprintf.h"
+
+#include "base/enums.h"
+#include "base/leb128.h"
+#include "base/stl_util.h"
+#include "descriptors_names.h"
+#include "dex_file-inl.h"
+#include "standard_dex_file.h"
+#include "utf-inl.h"
+
+namespace art_lkchan {
+
+using android_lkchan::base::StringPrintf;
+
+static_assert(sizeof(dex::StringIndex) == sizeof(uint32_t), "StringIndex size is wrong");
+static_assert(std::is_trivially_copyable<dex::StringIndex>::value, "StringIndex not trivial");
+static_assert(sizeof(dex::TypeIndex) == sizeof(uint16_t), "TypeIndex size is wrong");
+static_assert(std::is_trivially_copyable<dex::TypeIndex>::value, "TypeIndex not trivial");
+
+void DexFile::UnHideAccessFlags(ClassDataItemIterator& class_it) {
+  uint8_t* data = const_cast<uint8_t*>(class_it.DataPointer());
+  uint32_t new_flag = class_it.GetMemberAccessFlags();
+  bool is_method = class_it.IsAtMethod();
+  // Go back 1 uleb to start.
+  data = ReverseSearchUnsignedLeb128(data);
+  if (is_method) {
+    // Methods have another uleb field before the access flags
+    data = ReverseSearchUnsignedLeb128(data);
+  }
+  DCHECK_EQ(HiddenApiAccessFlags::RemoveFromDex(DecodeUnsignedLeb128WithoutMovingCursor(data)),
+            new_flag);
+  UpdateUnsignedLeb128(data, new_flag);
+}
+
+uint32_t DexFile::CalculateChecksum() const {
+  return CalculateChecksum(Begin(), Size());
+}
+
+uint32_t DexFile::CalculateChecksum(const uint8_t* begin, size_t size) {
+  const uint32_t non_sum_bytes = OFFSETOF_MEMBER(DexFile::Header, signature_);
+  return ChecksumMemoryRange(begin + non_sum_bytes, size - non_sum_bytes);
+}
+
+uint32_t DexFile::ChecksumMemoryRange(const uint8_t* begin, size_t size) {
+  return adler32(adler32(0L, Z_NULL, 0), begin, size);
+}
+
+int DexFile::GetPermissions() const {
+  CHECK(container_.get() != nullptr);
+  return container_->GetPermissions();
+}
+
+bool DexFile::IsReadOnly() const {
+  CHECK(container_.get() != nullptr);
+  return container_->IsReadOnly();
+}
+
+bool DexFile::EnableWrite() const {
+  CHECK(container_.get() != nullptr);
+  return container_->EnableWrite();
+}
+
+bool DexFile::DisableWrite() const {
+  CHECK(container_.get() != nullptr);
+  return container_->DisableWrite();
+}
+
+DexFile::DexFile(const uint8_t* base,
+                 size_t size,
+                 const uint8_t* data_begin,
+                 size_t data_size,
+                 const std::string& location,
+                 uint32_t location_checksum,
+                 const OatDexFile* oat_dex_file,
+                 std::unique_ptr<DexFileContainer> container,
+                 bool is_compact_dex)
+    : begin_(base),
+      size_(size),
+      data_begin_(data_begin),
+      data_size_(data_size),
+      location_(location),
+      location_checksum_(location_checksum),
+      header_(reinterpret_cast<const Header*>(base)),
+      string_ids_(reinterpret_cast<const StringId*>(base + header_->string_ids_off_)),
+      type_ids_(reinterpret_cast<const TypeId*>(base + header_->type_ids_off_)),
+      field_ids_(reinterpret_cast<const FieldId*>(base + header_->field_ids_off_)),
+      method_ids_(reinterpret_cast<const MethodId*>(base + header_->method_ids_off_)),
+      proto_ids_(reinterpret_cast<const ProtoId*>(base + header_->proto_ids_off_)),
+      class_defs_(reinterpret_cast<const ClassDef*>(base + header_->class_defs_off_)),
+      method_handles_(nullptr),
+      num_method_handles_(0),
+      call_site_ids_(nullptr),
+      num_call_site_ids_(0),
+      oat_dex_file_(oat_dex_file),
+      container_(std::move(container)),
+      is_compact_dex_(is_compact_dex),
+      is_platform_dex_(false) {
+  CHECK(begin_ != nullptr) << GetLocation();
+  CHECK_GT(size_, 0U) << GetLocation();
+  // Check base (=header) alignment.
+  // Must be 4-byte aligned to avoid undefined behavior when accessing
+  // any of the sections via a pointer.
+  CHECK_ALIGNED(begin_, alignof(Header));
+
+  InitializeSectionsFromMapList();
+}
+
+DexFile::~DexFile() {
+  // We don't call DeleteGlobalRef on dex_object_ because we're only called by DestroyJavaVM, and
+  // that's only called after DetachCurrentThread, which means there's no JNIEnv. We could
+  // re-attach, but cleaning up these global references is not obviously useful. It's not as if
+  // the global reference table is otherwise empty!
+}
+
+bool DexFile::Init(std::string* error_msg) {
+  if (!CheckMagicAndVersion(error_msg)) {
+    return false;
+  }
+  return true;
+}
+
+bool DexFile::CheckMagicAndVersion(std::string* error_msg) const {
+  if (!IsMagicValid()) {
+    std::ostringstream oss;
+    oss << "Unrecognized magic number in "  << GetLocation() << ":"
+            << " " << header_->magic_[0]
+            << " " << header_->magic_[1]
+            << " " << header_->magic_[2]
+            << " " << header_->magic_[3];
+    *error_msg = oss.str();
+    return false;
+  }
+  if (!IsVersionValid()) {
+    std::ostringstream oss;
+    oss << "Unrecognized version number in "  << GetLocation() << ":"
+            << " " << header_->magic_[4]
+            << " " << header_->magic_[5]
+            << " " << header_->magic_[6]
+            << " " << header_->magic_[7];
+    *error_msg = oss.str();
+    return false;
+  }
+  return true;
+}
+
+void DexFile::InitializeSectionsFromMapList() {
+  const MapList* map_list = reinterpret_cast<const MapList*>(DataBegin() + header_->map_off_);
+  if (header_->map_off_ == 0 || header_->map_off_ > DataSize()) {
+    // Bad offset. The dex file verifier runs after this method and will reject the file.
+    return;
+  }
+  const size_t count = map_list->size_;
+
+  size_t map_limit = header_->map_off_ + count * sizeof(MapItem);
+  if (header_->map_off_ >= map_limit || map_limit > DataSize()) {
+    // Overflow or out out of bounds. The dex file verifier runs after
+    // this method and will reject the file as it is malformed.
+    return;
+  }
+
+  for (size_t i = 0; i < count; ++i) {
+    const MapItem& map_item = map_list->list_[i];
+    if (map_item.type_ == kDexTypeMethodHandleItem) {
+      method_handles_ = reinterpret_cast<const MethodHandleItem*>(Begin() + map_item.offset_);
+      num_method_handles_ = map_item.size_;
+    } else if (map_item.type_ == kDexTypeCallSiteIdItem) {
+      call_site_ids_ = reinterpret_cast<const CallSiteIdItem*>(Begin() + map_item.offset_);
+      num_call_site_ids_ = map_item.size_;
+    }
+  }
+}
+
+uint32_t DexFile::Header::GetVersion() const {
+  const char* version = reinterpret_cast<const char*>(&magic_[kDexMagicSize]);
+  return atoi(version);
+}
+
+const DexFile::ClassDef* DexFile::FindClassDef(dex::TypeIndex type_idx) const {
+  size_t num_class_defs = NumClassDefs();
+  // Fast path for rare no class defs case.
+  if (num_class_defs == 0) {
+    return nullptr;
+  }
+  for (size_t i = 0; i < num_class_defs; ++i) {
+    const ClassDef& class_def = GetClassDef(i);
+    if (class_def.class_idx_ == type_idx) {
+      return &class_def;
+    }
+  }
+  return nullptr;
+}
+
+uint32_t DexFile::FindCodeItemOffset(const DexFile::ClassDef& class_def,
+                                     uint32_t method_idx) const {
+  const uint8_t* class_data = GetClassData(class_def);
+  CHECK(class_data != nullptr);
+  ClassDataItemIterator it(*this, class_data);
+  it.SkipAllFields();
+  while (it.HasNextDirectMethod()) {
+    if (it.GetMemberIndex() == method_idx) {
+      return it.GetMethodCodeItemOffset();
+    }
+    it.Next();
+  }
+  while (it.HasNextVirtualMethod()) {
+    if (it.GetMemberIndex() == method_idx) {
+      return it.GetMethodCodeItemOffset();
+    }
+    it.Next();
+  }
+  LOG(FATAL) << "Unable to find method " << method_idx;
+  UNREACHABLE();
+}
+
+const DexFile::FieldId* DexFile::FindFieldId(const DexFile::TypeId& declaring_klass,
+                                             const DexFile::StringId& name,
+                                             const DexFile::TypeId& type) const {
+  // Binary search MethodIds knowing that they are sorted by class_idx, name_idx then proto_idx
+  const dex::TypeIndex class_idx = GetIndexForTypeId(declaring_klass);
+  const dex::StringIndex name_idx = GetIndexForStringId(name);
+  const dex::TypeIndex type_idx = GetIndexForTypeId(type);
+  int32_t lo = 0;
+  int32_t hi = NumFieldIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const DexFile::FieldId& field = GetFieldId(mid);
+    if (class_idx > field.class_idx_) {
+      lo = mid + 1;
+    } else if (class_idx < field.class_idx_) {
+      hi = mid - 1;
+    } else {
+      if (name_idx > field.name_idx_) {
+        lo = mid + 1;
+      } else if (name_idx < field.name_idx_) {
+        hi = mid - 1;
+      } else {
+        if (type_idx > field.type_idx_) {
+          lo = mid + 1;
+        } else if (type_idx < field.type_idx_) {
+          hi = mid - 1;
+        } else {
+          return &field;
+        }
+      }
+    }
+  }
+  return nullptr;
+}
+
+const DexFile::MethodId* DexFile::FindMethodId(const DexFile::TypeId& declaring_klass,
+                                               const DexFile::StringId& name,
+                                               const DexFile::ProtoId& signature) const {
+  // Binary search MethodIds knowing that they are sorted by class_idx, name_idx then proto_idx
+  const dex::TypeIndex class_idx = GetIndexForTypeId(declaring_klass);
+  const dex::StringIndex name_idx = GetIndexForStringId(name);
+  const uint16_t proto_idx = GetIndexForProtoId(signature);
+  int32_t lo = 0;
+  int32_t hi = NumMethodIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const DexFile::MethodId& method = GetMethodId(mid);
+    if (class_idx > method.class_idx_) {
+      lo = mid + 1;
+    } else if (class_idx < method.class_idx_) {
+      hi = mid - 1;
+    } else {
+      if (name_idx > method.name_idx_) {
+        lo = mid + 1;
+      } else if (name_idx < method.name_idx_) {
+        hi = mid - 1;
+      } else {
+        if (proto_idx > method.proto_idx_) {
+          lo = mid + 1;
+        } else if (proto_idx < method.proto_idx_) {
+          hi = mid - 1;
+        } else {
+          return &method;
+        }
+      }
+    }
+  }
+  return nullptr;
+}
+
+const DexFile::StringId* DexFile::FindStringId(const char* string) const {
+  int32_t lo = 0;
+  int32_t hi = NumStringIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const DexFile::StringId& str_id = GetStringId(dex::StringIndex(mid));
+    const char* str = GetStringData(str_id);
+    int compare = CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(string, str);
+    if (compare > 0) {
+      lo = mid + 1;
+    } else if (compare < 0) {
+      hi = mid - 1;
+    } else {
+      return &str_id;
+    }
+  }
+  return nullptr;
+}
+
+const DexFile::TypeId* DexFile::FindTypeId(const char* string) const {
+  int32_t lo = 0;
+  int32_t hi = NumTypeIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const TypeId& type_id = GetTypeId(dex::TypeIndex(mid));
+    const DexFile::StringId& str_id = GetStringId(type_id.descriptor_idx_);
+    const char* str = GetStringData(str_id);
+    int compare = CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(string, str);
+    if (compare > 0) {
+      lo = mid + 1;
+    } else if (compare < 0) {
+      hi = mid - 1;
+    } else {
+      return &type_id;
+    }
+  }
+  return nullptr;
+}
+
+const DexFile::StringId* DexFile::FindStringId(const uint16_t* string, size_t length) const {
+  int32_t lo = 0;
+  int32_t hi = NumStringIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const DexFile::StringId& str_id = GetStringId(dex::StringIndex(mid));
+    const char* str = GetStringData(str_id);
+    int compare = CompareModifiedUtf8ToUtf16AsCodePointValues(str, string, length);
+    if (compare > 0) {
+      lo = mid + 1;
+    } else if (compare < 0) {
+      hi = mid - 1;
+    } else {
+      return &str_id;
+    }
+  }
+  return nullptr;
+}
+
+const DexFile::TypeId* DexFile::FindTypeId(dex::StringIndex string_idx) const {
+  int32_t lo = 0;
+  int32_t hi = NumTypeIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const TypeId& type_id = GetTypeId(dex::TypeIndex(mid));
+    if (string_idx > type_id.descriptor_idx_) {
+      lo = mid + 1;
+    } else if (string_idx < type_id.descriptor_idx_) {
+      hi = mid - 1;
+    } else {
+      return &type_id;
+    }
+  }
+  return nullptr;
+}
+
+const DexFile::ProtoId* DexFile::FindProtoId(dex::TypeIndex return_type_idx,
+                                             const dex::TypeIndex* signature_type_idxs,
+                                             uint32_t signature_length) const {
+  int32_t lo = 0;
+  int32_t hi = NumProtoIds() - 1;
+  while (hi >= lo) {
+    int32_t mid = (hi + lo) / 2;
+    const DexFile::ProtoId& proto = GetProtoId(mid);
+    int compare = return_type_idx.index_ - proto.return_type_idx_.index_;
+    if (compare == 0) {
+      DexFileParameterIterator it(*this, proto);
+      size_t i = 0;
+      while (it.HasNext() && i < signature_length && compare == 0) {
+        compare = signature_type_idxs[i].index_ - it.GetTypeIdx().index_;
+        it.Next();
+        i++;
+      }
+      if (compare == 0) {
+        if (it.HasNext()) {
+          compare = -1;
+        } else if (i < signature_length) {
+          compare = 1;
+        }
+      }
+    }
+    if (compare > 0) {
+      lo = mid + 1;
+    } else if (compare < 0) {
+      hi = mid - 1;
+    } else {
+      return &proto;
+    }
+  }
+  return nullptr;
+}
+
+// Given a signature place the type ids into the given vector
+bool DexFile::CreateTypeList(const StringPiece& signature,
+                             dex::TypeIndex* return_type_idx,
+                             std::vector<dex::TypeIndex>* param_type_idxs) const {
+  if (signature[0] != '(') {
+    return false;
+  }
+  size_t offset = 1;
+  size_t end = signature.size();
+  bool process_return = false;
+  while (offset < end) {
+    size_t start_offset = offset;
+    char c = signature[offset];
+    offset++;
+    if (c == ')') {
+      process_return = true;
+      continue;
+    }
+    while (c == '[') {  // process array prefix
+      if (offset >= end) {  // expect some descriptor following [
+        return false;
+      }
+      c = signature[offset];
+      offset++;
+    }
+    if (c == 'L') {  // process type descriptors
+      do {
+        if (offset >= end) {  // unexpected early termination of descriptor
+          return false;
+        }
+        c = signature[offset];
+        offset++;
+      } while (c != ';');
+    }
+    // TODO: avoid creating a std::string just to get a 0-terminated char array
+    std::string descriptor(signature.data() + start_offset, offset - start_offset);
+    const DexFile::TypeId* type_id = FindTypeId(descriptor.c_str());
+    if (type_id == nullptr) {
+      return false;
+    }
+    dex::TypeIndex type_idx = GetIndexForTypeId(*type_id);
+    if (!process_return) {
+      param_type_idxs->push_back(type_idx);
+    } else {
+      *return_type_idx = type_idx;
+      return offset == end;  // return true if the signature had reached a sensible end
+    }
+  }
+  return false;  // failed to correctly parse return type
+}
+
+const Signature DexFile::CreateSignature(const StringPiece& signature) const {
+  dex::TypeIndex return_type_idx;
+  std::vector<dex::TypeIndex> param_type_indices;
+  bool success = CreateTypeList(signature, &return_type_idx, &param_type_indices);
+  if (!success) {
+    return Signature::NoSignature();
+  }
+  const ProtoId* proto_id = FindProtoId(return_type_idx, param_type_indices);
+  if (proto_id == nullptr) {
+    return Signature::NoSignature();
+  }
+  return Signature(this, *proto_id);
+}
+
+int32_t DexFile::FindTryItem(const TryItem* try_items, uint32_t tries_size, uint32_t address) {
+  uint32_t min = 0;
+  uint32_t max = tries_size;
+  while (min < max) {
+    const uint32_t mid = (min + max) / 2;
+
+    const art_lkchan::DexFile::TryItem& ti = try_items[mid];
+    const uint32_t start = ti.start_addr_;
+    const uint32_t end = start + ti.insn_count_;
+
+    if (address < start) {
+      max = mid;
+    } else if (address >= end) {
+      min = mid + 1;
+    } else {  // We have a winner!
+      return mid;
+    }
+  }
+  // No match.
+  return -1;
+}
+
+bool DexFile::LineNumForPcCb(void* raw_context, const PositionInfo& entry) {
+  LineNumFromPcContext* context = reinterpret_cast<LineNumFromPcContext*>(raw_context);
+
+  // We know that this callback will be called in
+  // ascending address order, so keep going until we find
+  // a match or we've just gone past it.
+  if (entry.address_ > context->address_) {
+    // The line number from the previous positions callback
+    // wil be the final result.
+    return true;
+  } else {
+    context->line_num_ = entry.line_;
+    return entry.address_ == context->address_;
+  }
+}
+
+// Read a signed integer.  "zwidth" is the zero-based byte count.
+int32_t DexFile::ReadSignedInt(const uint8_t* ptr, int zwidth) {
+  int32_t val = 0;
+  for (int i = zwidth; i >= 0; --i) {
+    val = ((uint32_t)val >> 8) | (((int32_t)*ptr++) << 24);
+  }
+  val >>= (3 - zwidth) * 8;
+  return val;
+}
+
+// Read an unsigned integer.  "zwidth" is the zero-based byte count,
+// "fill_on_right" indicates which side we want to zero-fill from.
+uint32_t DexFile::ReadUnsignedInt(const uint8_t* ptr, int zwidth, bool fill_on_right) {
+  uint32_t val = 0;
+  for (int i = zwidth; i >= 0; --i) {
+    val = (val >> 8) | (((uint32_t)*ptr++) << 24);
+  }
+  if (!fill_on_right) {
+    val >>= (3 - zwidth) * 8;
+  }
+  return val;
+}
+
+// Read a signed long.  "zwidth" is the zero-based byte count.
+int64_t DexFile::ReadSignedLong(const uint8_t* ptr, int zwidth) {
+  int64_t val = 0;
+  for (int i = zwidth; i >= 0; --i) {
+    val = ((uint64_t)val >> 8) | (((int64_t)*ptr++) << 56);
+  }
+  val >>= (7 - zwidth) * 8;
+  return val;
+}
+
+// Read an unsigned long.  "zwidth" is the zero-based byte count,
+// "fill_on_right" indicates which side we want to zero-fill from.
+uint64_t DexFile::ReadUnsignedLong(const uint8_t* ptr, int zwidth, bool fill_on_right) {
+  uint64_t val = 0;
+  for (int i = zwidth; i >= 0; --i) {
+    val = (val >> 8) | (((uint64_t)*ptr++) << 56);
+  }
+  if (!fill_on_right) {
+    val >>= (7 - zwidth) * 8;
+  }
+  return val;
+}
+
+std::string DexFile::PrettyMethod(uint32_t method_idx, bool with_signature) const {
+  if (method_idx >= NumMethodIds()) {
+    return StringPrintf("<<invalid-method-idx-%d>>", method_idx);
+  }
+  const DexFile::MethodId& method_id = GetMethodId(method_idx);
+  std::string result;
+  const DexFile::ProtoId* proto_id = with_signature ? &GetProtoId(method_id.proto_idx_) : nullptr;
+  if (with_signature) {
+    AppendPrettyDescriptor(StringByTypeIdx(proto_id->return_type_idx_), &result);
+    result += ' ';
+  }
+  AppendPrettyDescriptor(GetMethodDeclaringClassDescriptor(method_id), &result);
+  result += '.';
+  result += GetMethodName(method_id);
+  if (with_signature) {
+    result += '(';
+    const DexFile::TypeList* params = GetProtoParameters(*proto_id);
+    if (params != nullptr) {
+      const char* separator = "";
+      for (uint32_t i = 0u, size = params->Size(); i != size; ++i) {
+        result += separator;
+        separator = ", ";
+        AppendPrettyDescriptor(StringByTypeIdx(params->GetTypeItem(i).type_idx_), &result);
+      }
+    }
+    result += ')';
+  }
+  return result;
+}
+
+std::string DexFile::PrettyField(uint32_t field_idx, bool with_type) const {
+  if (field_idx >= NumFieldIds()) {
+    return StringPrintf("<<invalid-field-idx-%d>>", field_idx);
+  }
+  const DexFile::FieldId& field_id = GetFieldId(field_idx);
+  std::string result;
+  if (with_type) {
+    result += GetFieldTypeDescriptor(field_id);
+    result += ' ';
+  }
+  AppendPrettyDescriptor(GetFieldDeclaringClassDescriptor(field_id), &result);
+  result += '.';
+  result += GetFieldName(field_id);
+  return result;
+}
+
+std::string DexFile::PrettyType(dex::TypeIndex type_idx) const {
+  if (type_idx.index_ >= NumTypeIds()) {
+    return StringPrintf("<<invalid-type-idx-%d>>", type_idx.index_);
+  }
+  const DexFile::TypeId& type_id = GetTypeId(type_idx);
+  return PrettyDescriptor(GetTypeDescriptor(type_id));
+}
+
+// Checks that visibility is as expected. Includes special behavior for M and
+// before to allow runtime and build visibility when expecting runtime.
+std::ostream& operator<<(std::ostream& os, const DexFile& dex_file) {
+  os << StringPrintf("[DexFile: %s dex-checksum=%08x location-checksum=%08x %p-%p]",
+                     dex_file.GetLocation().c_str(),
+                     dex_file.GetHeader().checksum_, dex_file.GetLocationChecksum(),
+                     dex_file.Begin(), dex_file.Begin() + dex_file.Size());
+  return os;
+}
+
+std::string Signature::ToString() const {
+  if (dex_file_ == nullptr) {
+    CHECK(proto_id_ == nullptr);
+    return "<no signature>";
+  }
+  const DexFile::TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
+  std::string result;
+  if (params == nullptr) {
+    result += "()";
+  } else {
+    result += "(";
+    for (uint32_t i = 0; i < params->Size(); ++i) {
+      result += dex_file_->StringByTypeIdx(params->GetTypeItem(i).type_idx_);
+    }
+    result += ")";
+  }
+  result += dex_file_->StringByTypeIdx(proto_id_->return_type_idx_);
+  return result;
+}
+
+uint32_t Signature::GetNumberOfParameters() const {
+  const DexFile::TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
+  return (params != nullptr) ? params->Size() : 0;
+}
+
+bool Signature::IsVoid() const {
+  const char* return_type = dex_file_->GetReturnTypeDescriptor(*proto_id_);
+  return strcmp(return_type, "V") == 0;
+}
+
+bool Signature::operator==(const StringPiece& rhs) const {
+  if (dex_file_ == nullptr) {
+    return false;
+  }
+  StringPiece tail(rhs);
+  if (!tail.starts_with("(")) {
+    return false;  // Invalid signature
+  }
+  tail.remove_prefix(1);  // "(";
+  const DexFile::TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
+  if (params != nullptr) {
+    for (uint32_t i = 0; i < params->Size(); ++i) {
+      StringPiece param(dex_file_->StringByTypeIdx(params->GetTypeItem(i).type_idx_));
+      if (!tail.starts_with(param)) {
+        return false;
+      }
+      tail.remove_prefix(param.length());
+    }
+  }
+  if (!tail.starts_with(")")) {
+    return false;
+  }
+  tail.remove_prefix(1);  // ")";
+  return tail == dex_file_->StringByTypeIdx(proto_id_->return_type_idx_);
+}
+
+std::ostream& operator<<(std::ostream& os, const Signature& sig) {
+  return os << sig.ToString();
+}
+std::ostream& operator<<(std::ostream& os, const EncodedStaticFieldValueIterator::ValueType& code)
+{
+    //chensenhua add
+    return os << EncodedStaticFieldValueIterator::ValueType(code);
+}
+//chensenhua end
+
+// Decodes the header section from the class data bytes.
+void ClassDataItemIterator::ReadClassDataHeader() {
+  CHECK(ptr_pos_ != nullptr);
+  header_.static_fields_size_ = DecodeUnsignedLeb128(&ptr_pos_);
+  header_.instance_fields_size_ = DecodeUnsignedLeb128(&ptr_pos_);
+  header_.direct_methods_size_ = DecodeUnsignedLeb128(&ptr_pos_);
+  header_.virtual_methods_size_ = DecodeUnsignedLeb128(&ptr_pos_);
+}
+
+void ClassDataItemIterator::ReadClassDataField() {
+  field_.field_idx_delta_ = DecodeUnsignedLeb128(&ptr_pos_);
+  field_.access_flags_ = DecodeUnsignedLeb128(&ptr_pos_);
+  // The user of the iterator is responsible for checking if there
+  // are unordered or duplicate indexes.
+}
+
+void ClassDataItemIterator::ReadClassDataMethod() {
+  method_.method_idx_delta_ = DecodeUnsignedLeb128(&ptr_pos_);
+  method_.access_flags_ = DecodeUnsignedLeb128(&ptr_pos_);
+  method_.code_off_ = DecodeUnsignedLeb128(&ptr_pos_);
+  if (last_idx_ != 0 && method_.method_idx_delta_ == 0) {
+    LOG(WARNING) << "Duplicate method in " << dex_file_.GetLocation();
+  }
+}
+
+EncodedArrayValueIterator::EncodedArrayValueIterator(const DexFile& dex_file,
+                                                     const uint8_t* array_data)
+    : dex_file_(dex_file),
+      array_size_(),
+      pos_(-1),
+      ptr_(array_data),
+      type_(kByte) {
+  array_size_ = (ptr_ != nullptr) ? DecodeUnsignedLeb128(&ptr_) : 0;
+  if (array_size_ > 0) {
+    Next();
+  }
+}
+
+void EncodedArrayValueIterator::Next() {
+  pos_++;
+  if (pos_ >= array_size_) {
+    return;
+  }
+  uint8_t value_type = *ptr_++;
+  uint8_t value_arg = value_type >> kEncodedValueArgShift;
+  size_t width = value_arg + 1;  // assume and correct later
+  type_ = static_cast<ValueType>(value_type & kEncodedValueTypeMask);
+  switch (type_) {
+  case kBoolean:
+    jval_.i = (value_arg != 0) ? 1 : 0;
+    width = 0;
+    break;
+  case kByte:
+    jval_.i = DexFile::ReadSignedInt(ptr_, value_arg);
+    CHECK(IsInt<8>(jval_.i));
+    break;
+  case kShort:
+    jval_.i = DexFile::ReadSignedInt(ptr_, value_arg);
+    CHECK(IsInt<16>(jval_.i));
+    break;
+  case kChar:
+    jval_.i = DexFile::ReadUnsignedInt(ptr_, value_arg, false);
+    CHECK(IsUint<16>(jval_.i));
+    break;
+  case kInt:
+    jval_.i = DexFile::ReadSignedInt(ptr_, value_arg);
+    break;
+  case kLong:
+    jval_.j = DexFile::ReadSignedLong(ptr_, value_arg);
+    break;
+  case kFloat:
+    jval_.i = DexFile::ReadUnsignedInt(ptr_, value_arg, true);
+    break;
+  case kDouble:
+    jval_.j = DexFile::ReadUnsignedLong(ptr_, value_arg, true);
+    break;
+  case kString:
+  case kType:
+  case kMethodType:
+  case kMethodHandle:
+    jval_.i = DexFile::ReadUnsignedInt(ptr_, value_arg, false);
+    break;
+  case kField:
+  case kMethod:
+  case kEnum:
+  case kArray:
+  case kAnnotation:
+    UNIMPLEMENTED(FATAL) << ": type " << type_;
+    UNREACHABLE();
+  case kNull:
+    jval_.l = nullptr;
+    width = 0;
+    break;
+  default:
+    LOG(FATAL) << "Unreached";
+    UNREACHABLE();
+  }
+  ptr_ += width;
+}
+
+namespace dex {
+
+std::ostream& operator<<(std::ostream& os, const StringIndex& index) {
+  os << "StringIndex[" << index.index_ << "]";
+  return os;
+}
+
+std::ostream& operator<<(std::ostream& os, const TypeIndex& index) {
+  os << "TypeIndex[" << index.index_ << "]";
+  return os;
+}
+
+}  // namespace dex
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/dex_file_exception_helpers.cc

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex_file_exception_helpers.h"
+
+#include "code_item_accessors-inl.h"
+
+namespace art_lkchan {
+
+CatchHandlerIterator::CatchHandlerIterator(const CodeItemDataAccessor& accessor, uint32_t address) {
+  handler_.address_ = -1;
+  int32_t offset = -1;
+
+  // Short-circuit the overwhelmingly common cases.
+  switch (accessor.TriesSize()) {
+    case 0:
+      break;
+    case 1: {
+      const DexFile::TryItem* tries = accessor.TryItems().begin();
+      uint32_t start = tries->start_addr_;
+      if (address >= start) {
+        uint32_t end = start + tries->insn_count_;
+        if (address < end) {
+          offset = tries->handler_off_;
+        }
+      }
+      break;
+    }
+    default: {
+      const DexFile::TryItem* try_item = accessor.FindTryItem(address);
+      offset = try_item != nullptr ? try_item->handler_off_ : -1;
+      break;
+    }
+  }
+  Init(accessor, offset);
+}
+
+CatchHandlerIterator::CatchHandlerIterator(const CodeItemDataAccessor& accessor,
+                                           const DexFile::TryItem& try_item) {
+  handler_.address_ = -1;
+  Init(accessor, try_item.handler_off_);
+}
+
+void CatchHandlerIterator::Init(const CodeItemDataAccessor& accessor, int32_t offset) {
+  if (offset >= 0) {
+    Init(accessor.GetCatchHandlerData(offset));
+  } else {
+    // Not found, initialize as empty
+    current_data_ = nullptr;
+    remaining_count_ = -1;
+    catch_all_ = false;
+    DCHECK(!HasNext());
+  }
+}
+
+void CatchHandlerIterator::Init(const uint8_t* handler_data) {
+  current_data_ = handler_data;
+  remaining_count_ = DecodeSignedLeb128(&current_data_);
+
+  // If remaining_count_ is non-positive, then it is the negative of
+  // the number of catch types, and the catches are followed by a
+  // catch-all handler.
+  if (remaining_count_ <= 0) {
+    catch_all_ = true;
+    remaining_count_ = -remaining_count_;
+  } else {
+    catch_all_ = false;
+  }
+  Next();
+}
+
+void CatchHandlerIterator::Next() {
+  if (remaining_count_ > 0) {
+    handler_.type_idx_ = dex::TypeIndex(DecodeUnsignedLeb128(&current_data_));
+    handler_.address_  = DecodeUnsignedLeb128(&current_data_);
+    remaining_count_--;
+    return;
+  }
+
+  if (catch_all_) {
+    handler_.type_idx_ = dex::TypeIndex(DexFile::kDexNoIndex16);
+    handler_.address_  = DecodeUnsignedLeb128(&current_data_);
+    catch_all_ = false;
+    return;
+  }
+
+  // no more handler
+  remaining_count_ = -1;
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/dex_file_exception_helpers.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
+
+#include "dex_file.h"
+
+namespace art_lkchan {
+
+class CodeItemDataAccessor;
+
+class CatchHandlerIterator {
+ public:
+  CatchHandlerIterator(const CodeItemDataAccessor& accessor, uint32_t address);
+
+  CatchHandlerIterator(const CodeItemDataAccessor& accessor, const DexFile::TryItem& try_item);
+
+  explicit CatchHandlerIterator(const uint8_t* handler_data) {
+    Init(handler_data);
+  }
+
+  dex::TypeIndex GetHandlerTypeIndex() const {
+    return handler_.type_idx_;
+  }
+  uint32_t GetHandlerAddress() const {
+    return handler_.address_;
+  }
+  void Next();
+  bool HasNext() const {
+    return remaining_count_ != -1 || catch_all_;
+  }
+  // End of this set of catch blocks, convenience method to locate next set of catch blocks
+  const uint8_t* EndDataPointer() const {
+    CHECK(!HasNext());
+    return current_data_;
+  }
+
+ private:
+  void Init(const CodeItemDataAccessor& accessor, int32_t offset);
+  void Init(const uint8_t* handler_data);
+
+  struct CatchHandlerItem {
+    dex::TypeIndex type_idx_;  // type index of the caught exception type
+    uint32_t address_;  // handler address
+  } handler_;
+  const uint8_t* current_data_;  // the current handler in dex file.
+  int32_t remaining_count_;   // number of handlers not read.
+  bool catch_all_;            // is there a handler that will catch all exceptions in case
+                              // that all typed handler does not match.
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_

Bcore/src/main/cpp/dex/dex_file_layout.cc

@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex_file_layout.h"
+
+#include <sys/mman.h>
+
+#include "dex_file.h"
+
+namespace art_lkchan {
+
+int DexLayoutSection::MadviseLargestPageAlignedRegion(const uint8_t* begin,
+                                                      const uint8_t* end,
+                                                      int advice) {
+  DCHECK_LE(begin, end);
+  begin = AlignUp(begin, kPageSize);
+  end = AlignDown(end, kPageSize);
+  if (begin < end) {
+    // TODO: remove the direct dependency on madvise here.
+    int result = madvise(const_cast<uint8_t*>(begin), end - begin, advice);
+    if (result != 0) {
+      PLOG(WARNING) << "madvise failed " << result;
+    }
+    return result;
+  }
+  return 0;
+}
+
+void DexLayoutSection::Subsection::Madvise(const DexFile* dex_file, int advice) const {
+  DCHECK(dex_file != nullptr);
+  DCHECK_LT(start_offset_, dex_file->Size());
+  DCHECK_LE(end_offset_, dex_file->Size());
+  MadviseLargestPageAlignedRegion(dex_file->Begin() + start_offset_,
+                                  dex_file->Begin() + end_offset_,
+                                  advice);
+}
+
+void DexLayoutSections::Madvise(const DexFile* dex_file, MadviseState state) const {
+  // The dex file is already defaulted to random access everywhere.
+  for (const DexLayoutSection& section : sections_) {
+    switch (state) {
+      case MadviseState::kMadviseStateAtLoad: {
+        section.parts_[static_cast<size_t>(LayoutType::kLayoutTypeStartupOnly)].Madvise(
+            dex_file,
+            MADV_WILLNEED);
+        section.parts_[static_cast<size_t>(LayoutType::kLayoutTypeHot)].Madvise(
+            dex_file,
+            MADV_WILLNEED);
+        break;
+      }
+      case MadviseState::kMadviseStateFinishedLaunch: {
+        section.parts_[static_cast<size_t>(LayoutType::kLayoutTypeStartupOnly)].Madvise(
+            dex_file,
+            MADV_DONTNEED);
+        break;
+      }
+      case MadviseState::kMadviseStateFinishedTrim: {
+        section.parts_[static_cast<size_t>(LayoutType::kLayoutTypeSometimesUsed)].Madvise(
+            dex_file,
+            MADV_DONTNEED);
+        section.parts_[static_cast<size_t>(LayoutType::kLayoutTypeUsedOnce)].Madvise(
+            dex_file,
+            MADV_DONTNEED);
+        break;
+      }
+    }
+  }
+}
+
+std::ostream& operator<<(std::ostream& os, const DexLayoutSection& section) {
+  for (size_t i = 0; i < static_cast<size_t>(LayoutType::kLayoutTypeCount); ++i) {
+    const DexLayoutSection::Subsection& part = section.parts_[i];
+    os << static_cast<LayoutType>(i) << "("
+       << part.start_offset_ << "-" << part.end_offset_ << ") ";
+  }
+  return os;
+}
+//chensenhua add
+    std::ostream& operator<<(std::ostream& os, const DexLayoutSections::SectionType& collector_type){
+      return  os<<DexLayoutSections::SectionType (collector_type);
+}
+
+    std::ostream& operator<<(std::ostream& os, const LayoutType& collector_type){
+        return os << LayoutType(collector_type);
+}
+//chensenhua end
+std::ostream& operator<<(std::ostream& os, const DexLayoutSections& sections) {
+  for (size_t i = 0; i < static_cast<size_t>(DexLayoutSections::SectionType::kSectionCount); ++i) {
+    os << static_cast<DexLayoutSections::SectionType>(i) << ":" << sections.sections_[i] << "\n";
+  }
+  return os;
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/dex_file_layout.h

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_LAYOUT_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_LAYOUT_H_
+
+#include <algorithm>
+#include <cstdint>
+#include <iosfwd>
+
+#include <android-base/logging.h>
+
+namespace art_lkchan {
+
+class DexFile;
+
+enum class LayoutType : uint8_t {
+  // Layout of things that are hot (commonly accessed), these should be pinned or madvised will
+  // need.
+  kLayoutTypeHot,
+  // Layout of things that are randomly used. These should be advised to random access.
+  // Without layout, this is the default mode when loading a dex file.
+  kLayoutTypeSometimesUsed,
+  // Layout of things that are only used during startup, these can be madvised after launch.
+  kLayoutTypeStartupOnly,
+  // Layout of things that are needed probably only once (class initializers). These can be
+  // madvised during trim events.
+  kLayoutTypeUsedOnce,
+  // Layout of things that are thought to be unused. These things should be advised to random
+  // access.
+  kLayoutTypeUnused,
+  // Unused value, just the number of elements in the enum.
+  kLayoutTypeCount,
+};
+std::ostream& operator<<(std::ostream& os, const LayoutType& collector_type);
+
+// Return the "best" layout option if the same item has multiple different layouts.
+static inline LayoutType MergeLayoutType(LayoutType a, LayoutType b) {
+  return std::min(a, b);
+}
+
+enum class MadviseState : uint8_t {
+  // Madvise based on a file that was just loaded.
+  kMadviseStateAtLoad,
+  // Madvise based after launch is finished.
+  kMadviseStateFinishedLaunch,
+  // Trim by madvising code that is unlikely to be too important in the future.
+  kMadviseStateFinishedTrim,
+};
+std::ostream& operator<<(std::ostream& os, const MadviseState& collector_type);
+
+// A dex layout section such as code items or strings. Each section is composed of subsections
+// that are laid out adjacently to each other such as (hot, unused, startup, etc...).
+class DexLayoutSection {
+ public:
+  // A subsection is a a continuous range of dex file that is all part of the same layout hint.
+  class Subsection {
+   public:
+    // Use uint32_t to handle 32/64 bit cross compilation.
+    uint32_t start_offset_ = 0u;
+    uint32_t end_offset_ = 0u;
+
+    bool Contains(uint32_t offset) const {
+      return start_offset_ <= offset && offset < end_offset_;
+    }
+
+    bool Size() const {
+      DCHECK_LE(start_offset_, end_offset_);
+      return end_offset_ - start_offset_;
+    }
+
+    void CombineSection(uint32_t start_offset, uint32_t end_offset) {
+      DCHECK_LE(start_offset, end_offset);
+      if (start_offset_ == end_offset_) {
+        start_offset_ = start_offset;
+        end_offset_ = end_offset;
+      } else  {
+        start_offset_ = std::min(start_offset_, start_offset);
+        end_offset_ = std::max(end_offset_, end_offset);
+      }
+    }
+
+    void Madvise(const DexFile* dex_file, int advice) const;
+  };
+
+  // Madvise the largest page-aligned region contained in [begin, end).
+  static int MadviseLargestPageAlignedRegion(const uint8_t* begin, const uint8_t* end, int advice);
+
+  Subsection parts_[static_cast<size_t>(LayoutType::kLayoutTypeCount)];
+};
+
+// A set of dex layout sections, currently there is only one section for code and one for strings.
+class DexLayoutSections {
+ public:
+  enum class SectionType : uint8_t {
+    kSectionTypeCode,
+    kSectionTypeStrings,
+    kSectionCount,
+  };
+
+  // Advise access about the dex file based on layout. The caller is expected to have already
+  // madvised to MADV_RANDOM.
+  void Madvise(const DexFile* dex_file, MadviseState state) const;
+
+  DexLayoutSection sections_[static_cast<size_t>(SectionType::kSectionCount)];
+};
+
+std::ostream& operator<<(std::ostream& os, const DexLayoutSections::SectionType& collector_type);
+std::ostream& operator<<(std::ostream& os, const DexLayoutSection& section);
+std::ostream& operator<<(std::ostream& os, const DexLayoutSections& sections);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_LAYOUT_H_

Bcore/src/main/cpp/dex/dex_file_loader.cc

@@ -0,0 +1,508 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex_file_loader.h"
+
+#include "android-base/stringprintf.h"
+
+#include "base/stl_util.h"
+#include "compact_dex_file.h"
+#include "dex_file.h"
+#include "dex_file_verifier.h"
+#include "standard_dex_file.h"
+#include "ziparchive/zip_archive.h"
+
+// system/core/zip_archive definitions.
+struct ZipEntry;
+typedef void* ZipArchiveHandle;
+
+namespace art_lkchan {
+
+namespace {
+
+class VectorContainer : public DexFileContainer {
+ public:
+  explicit VectorContainer(std::vector<uint8_t>&& vector) : vector_(std::move(vector)) { }
+  virtual ~VectorContainer() OVERRIDE { }
+
+  int GetPermissions() OVERRIDE {
+    return 0;
+  }
+
+  bool IsReadOnly() OVERRIDE {
+    return true;
+  }
+
+  bool EnableWrite() OVERRIDE {
+    return false;
+  }
+
+  bool DisableWrite() OVERRIDE {
+    return false;
+  }
+
+ private:
+  std::vector<uint8_t> vector_;
+  DISALLOW_COPY_AND_ASSIGN(VectorContainer);
+};
+
+}  // namespace
+
+using android_lkchan::base::StringPrintf;
+
+class DexZipArchive;
+
+class DexZipEntry {
+ public:
+  // Extract this entry to memory.
+  // Returns null on failure and sets error_msg.
+  const std::vector<uint8_t> Extract(std::string* error_msg) {
+    std::vector<uint8_t> map(GetUncompressedLength());
+    if (map.size() == 0) {
+      DCHECK(!error_msg->empty());
+      return map;
+    }
+    const int32_t error = ExtractToMemory(handle_, zip_entry_, map.data(), map.size());
+    if (error) {
+      *error_msg = std::string(ErrorCodeString(error));
+    }
+    return map;
+  }
+
+  virtual ~DexZipEntry() {
+    delete zip_entry_;
+  }
+
+  uint32_t GetUncompressedLength() {
+    return zip_entry_->uncompressed_length;
+  }
+
+  uint32_t GetCrc32() {
+    return zip_entry_->crc32;
+  }
+
+ private:
+  DexZipEntry(ZipArchiveHandle handle,
+              ::ZipEntry* zip_entry,
+           const std::string& entry_name)
+    : handle_(handle), zip_entry_(zip_entry), entry_name_(entry_name) {}
+
+  ZipArchiveHandle handle_;
+  ::ZipEntry* const zip_entry_;
+  std::string const entry_name_;
+
+  friend class DexZipArchive;
+  DISALLOW_COPY_AND_ASSIGN(DexZipEntry);
+};
+
+class DexZipArchive {
+ public:
+  // return new DexZipArchive instance on success, null on error.
+  static DexZipArchive* Open(const uint8_t* base, size_t size, std::string* error_msg) {
+    ZipArchiveHandle handle;
+    uint8_t* nonconst_base = const_cast<uint8_t*>(base);
+    const int32_t error = OpenArchiveFromMemory(nonconst_base, size, "ZipArchiveMemory", &handle);
+    if (error) {
+      *error_msg = std::string(ErrorCodeString(error));
+      CloseArchive(handle);
+      return nullptr;
+    }
+    return new DexZipArchive(handle);
+  }
+
+  DexZipEntry* Find(const char* name, std::string* error_msg) const {
+    DCHECK(name != nullptr);
+    // Resist the urge to delete the space. <: is a bigraph sequence.
+    std::unique_ptr< ::ZipEntry> zip_entry(new ::ZipEntry);
+    const int32_t error = FindEntry(handle_, ZipString(name), zip_entry.get());
+    if (error) {
+      *error_msg = std::string(ErrorCodeString(error));
+      return nullptr;
+    }
+    return new DexZipEntry(handle_, zip_entry.release(), name);
+  }
+
+  ~DexZipArchive() {
+    CloseArchive(handle_);
+  }
+
+
+ private:
+  explicit DexZipArchive(ZipArchiveHandle handle) : handle_(handle) {}
+  ZipArchiveHandle handle_;
+
+  friend class DexZipEntry;
+  DISALLOW_COPY_AND_ASSIGN(DexZipArchive);
+};
+
+static bool IsZipMagic(uint32_t magic) {
+  return (('P' == ((magic >> 0) & 0xff)) &&
+          ('K' == ((magic >> 8) & 0xff)));
+}
+
+bool DexFileLoader::IsMagicValid(uint32_t magic) {
+  return IsMagicValid(reinterpret_cast<uint8_t*>(&magic));
+}
+
+bool DexFileLoader::IsMagicValid(const uint8_t* magic) {
+  return StandardDexFile::IsMagicValid(magic) ||
+      CompactDexFile::IsMagicValid(magic);
+}
+
+bool DexFileLoader::IsVersionAndMagicValid(const uint8_t* magic) {
+  if (StandardDexFile::IsMagicValid(magic)) {
+    return StandardDexFile::IsVersionValid(magic);
+  }
+  if (CompactDexFile::IsMagicValid(magic)) {
+    return CompactDexFile::IsVersionValid(magic);
+  }
+  return false;
+}
+
+bool DexFileLoader::IsMultiDexLocation(const char* location) {
+  return strrchr(location, kMultiDexSeparator) != nullptr;
+}
+
+std::string DexFileLoader::GetMultiDexClassesDexName(size_t index) {
+  return (index == 0) ? "classes.dex" : StringPrintf("classes%zu.dex", index + 1);
+}
+
+std::string DexFileLoader::GetMultiDexLocation(size_t index, const char* dex_location) {
+  return (index == 0)
+      ? dex_location
+      : StringPrintf("%s%cclasses%zu.dex", dex_location, kMultiDexSeparator, index + 1);
+}
+
+std::string DexFileLoader::GetDexCanonicalLocation(const char* dex_location) {
+  CHECK_NE(dex_location, static_cast<const char*>(nullptr));
+  std::string base_location = GetBaseLocation(dex_location);
+  const char* suffix = dex_location + base_location.size();
+  DCHECK(suffix[0] == 0 || suffix[0] == kMultiDexSeparator);
+  // Warning: Bionic implementation of realpath() allocates > 12KB on the stack.
+  // Do not run this code on a small stack, e.g. in signal handler.
+  UniqueCPtr<const char[]> path(realpath(base_location.c_str(), nullptr));
+  if (path != nullptr && path.get() != base_location) {
+    return std::string(path.get()) + suffix;
+  } else if (suffix[0] == 0) {
+    return base_location;
+  } else {
+    return dex_location;
+  }
+}
+
+// All of the implementations here should be independent of the runtime.
+// TODO: implement all the virtual methods.
+
+bool DexFileLoader::GetMultiDexChecksums(
+    const char* filename ATTRIBUTE_UNUSED,
+    std::vector<uint32_t>* checksums ATTRIBUTE_UNUSED,
+    std::string* error_msg,
+    int zip_fd ATTRIBUTE_UNUSED,
+    bool* zip_file_only_contains_uncompress_dex ATTRIBUTE_UNUSED) const {
+  *error_msg = "UNIMPLEMENTED";
+  return false;
+}
+
+std::unique_ptr<const DexFile> DexFileLoader::Open(const uint8_t* base,
+                                                   size_t size,
+                                                   const std::string& location,
+                                                   uint32_t location_checksum,
+                                                   const OatDexFile* oat_dex_file,
+                                                   bool verify,
+                                                   bool verify_checksum,
+                                                   std::string* error_msg) const {
+  return OpenCommon(base,
+                    size,
+                    /*data_base*/ nullptr,
+                    /*data_size*/ 0,
+                    location,
+                    location_checksum,
+                    oat_dex_file,
+                    verify,
+                    verify_checksum,
+                    error_msg,
+                    /*container*/ nullptr,
+                    /*verify_result*/ nullptr);
+}
+
+std::unique_ptr<const DexFile> DexFileLoader::OpenWithDataSection(
+    const uint8_t* base,
+    size_t size,
+    const uint8_t* data_base,
+    size_t data_size,
+    const std::string& location,
+    uint32_t location_checksum,
+    const OatDexFile* oat_dex_file,
+    bool verify,
+    bool verify_checksum,
+    std::string* error_msg) const {
+  return OpenCommon(base,
+                    size,
+                    data_base,
+                    data_size,
+                    location,
+                    location_checksum,
+                    oat_dex_file,
+                    verify,
+                    verify_checksum,
+                    error_msg,
+                    /*container*/ nullptr,
+                    /*verify_result*/ nullptr);
+}
+
+bool DexFileLoader::OpenAll(
+    const uint8_t* base,
+    size_t size,
+    const std::string& location,
+    bool verify,
+    bool verify_checksum,
+    std::string* error_msg,
+    std::vector<std::unique_ptr<const DexFile>>* dex_files) const {
+  DCHECK(dex_files != nullptr) << "DexFile::Open: out-param is nullptr";
+  uint32_t magic = *reinterpret_cast<const uint32_t*>(base);
+  if (IsZipMagic(magic)) {
+    std::unique_ptr<DexZipArchive> zip_archive(DexZipArchive::Open(base, size, error_msg));
+    if (zip_archive.get() == nullptr) {
+      DCHECK(!error_msg->empty());
+      return false;
+    }
+    return OpenAllDexFilesFromZip(*zip_archive.get(),
+                                  location,
+                                  verify,
+                                  verify_checksum,
+                                  error_msg,
+                                  dex_files);
+  }
+  if (IsMagicValid(magic)) {
+    const DexFile::Header* dex_header = reinterpret_cast<const DexFile::Header*>(base);
+    std::unique_ptr<const DexFile> dex_file(Open(base,
+                                                 size,
+                                                 location,
+                                                 dex_header->checksum_,
+                                                 /*oat_dex_file*/ nullptr,
+                                                 verify,
+                                                 verify_checksum,
+                                                 error_msg));
+    if (dex_file.get() != nullptr) {
+      dex_files->push_back(std::move(dex_file));
+      return true;
+    } else {
+      return false;
+    }
+  }
+  *error_msg = StringPrintf("Expected valid zip or dex file");
+  return false;
+}
+
+std::unique_ptr<DexFile> DexFileLoader::OpenCommon(const uint8_t* base,
+                                                   size_t size,
+                                                   const uint8_t* data_base,
+                                                   size_t data_size,
+                                                   const std::string& location,
+                                                   uint32_t location_checksum,
+                                                   const OatDexFile* oat_dex_file,
+                                                   bool verify,
+                                                   bool verify_checksum,
+                                                   std::string* error_msg,
+                                                   std::unique_ptr<DexFileContainer> container,
+                                                   VerifyResult* verify_result) {
+  if (verify_result != nullptr) {
+    *verify_result = VerifyResult::kVerifyNotAttempted;
+  }
+  std::unique_ptr<DexFile> dex_file;
+  if (size >= sizeof(StandardDexFile::Header) && StandardDexFile::IsMagicValid(base)) {
+    if (data_size != 0) {
+      CHECK_EQ(base, data_base) << "Unsupported for standard dex";
+    }
+    dex_file.reset(new StandardDexFile(base,
+                                       size,
+                                       location,
+                                       location_checksum,
+                                       oat_dex_file,
+                                       std::move(container)));
+  } else if (size >= sizeof(CompactDexFile::Header) && CompactDexFile::IsMagicValid(base)) {
+    if (data_base == nullptr) {
+      // TODO: Is there a clean way to support both an explicit data section and reading the one
+      // from the header.
+      CHECK_EQ(data_size, 0u);
+      const CompactDexFile::Header* const header = CompactDexFile::Header::At(base);
+      data_base = base + header->data_off_;
+      data_size = header->data_size_;
+    }
+    dex_file.reset(new CompactDexFile(base,
+                                      size,
+                                      data_base,
+                                      data_size,
+                                      location,
+                                      location_checksum,
+                                      oat_dex_file,
+                                      std::move(container)));
+    // Disable verification for CompactDex input.
+    verify = false;
+  } else {
+    *error_msg = "Invalid or truncated dex file";
+  }
+  if (dex_file == nullptr) {
+    *error_msg = StringPrintf("Failed to open dex file '%s' from memory: %s", location.c_str(),
+                              error_msg->c_str());
+    return nullptr;
+  }
+  if (!dex_file->Init(error_msg)) {
+    dex_file.reset();
+    return nullptr;
+  }
+  if (verify && !DexFileVerifier::Verify(dex_file.get(),
+                                         dex_file->Begin(),
+                                         dex_file->Size(),
+                                         location.c_str(),
+                                         verify_checksum,
+                                         error_msg)) {
+    if (verify_result != nullptr) {
+      *verify_result = VerifyResult::kVerifyFailed;
+    }
+    return nullptr;
+  }
+  if (verify_result != nullptr) {
+    *verify_result = VerifyResult::kVerifySucceeded;
+  }
+  return dex_file;
+}
+
+std::unique_ptr<const DexFile> DexFileLoader::OpenOneDexFileFromZip(
+    const DexZipArchive& zip_archive,
+    const char* entry_name,
+    const std::string& location,
+    bool verify,
+    bool verify_checksum,
+    std::string* error_msg,
+    ZipOpenErrorCode* error_code) const {
+  CHECK(!location.empty());
+  std::unique_ptr<DexZipEntry> zip_entry(zip_archive.Find(entry_name, error_msg));
+  if (zip_entry == nullptr) {
+    *error_code = ZipOpenErrorCode::kEntryNotFound;
+    return nullptr;
+  }
+  if (zip_entry->GetUncompressedLength() == 0) {
+    *error_msg = StringPrintf("Dex file '%s' has zero length", location.c_str());
+    *error_code = ZipOpenErrorCode::kDexFileError;
+    return nullptr;
+  }
+
+  std::vector<uint8_t> map(zip_entry->Extract(error_msg));
+  if (map.size() == 0) {
+    *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", entry_name, location.c_str(),
+                              error_msg->c_str());
+    *error_code = ZipOpenErrorCode::kExtractToMemoryError;
+    return nullptr;
+  }
+  VerifyResult verify_result;
+  std::unique_ptr<const DexFile> dex_file = OpenCommon(
+      map.data(),
+      map.size(),
+      /*data_base*/ nullptr,
+      /*data_size*/ 0u,
+      location,
+      zip_entry->GetCrc32(),
+      /*oat_dex_file*/ nullptr,
+      verify,
+      verify_checksum,
+      error_msg,
+      std::make_unique<VectorContainer>(std::move(map)),
+      &verify_result);
+  if (dex_file == nullptr) {
+    if (verify_result == VerifyResult::kVerifyNotAttempted) {
+      *error_code = ZipOpenErrorCode::kDexFileError;
+    } else {
+      *error_code = ZipOpenErrorCode::kVerifyError;
+    }
+    return nullptr;
+  }
+  if (verify_result != VerifyResult::kVerifySucceeded) {
+    *error_code = ZipOpenErrorCode::kVerifyError;
+    return nullptr;
+  }
+  *error_code = ZipOpenErrorCode::kNoError;
+  return dex_file;
+}
+
+// Technically we do not have a limitation with respect to the number of dex files that can be in a
+// multidex APK. However, it's bad practice, as each dex file requires its own tables for symbols
+// (types, classes, methods, ...) and dex caches. So warn the user that we open a zip with what
+// seems an excessive number.
+static constexpr size_t kWarnOnManyDexFilesThreshold = 100;
+
+bool DexFileLoader::OpenAllDexFilesFromZip(
+    const DexZipArchive& zip_archive,
+    const std::string& location,
+    bool verify,
+    bool verify_checksum,
+    std::string* error_msg,
+    std::vector<std::unique_ptr<const DexFile>>* dex_files) const {
+  DCHECK(dex_files != nullptr) << "DexFile::OpenFromZip: out-param is nullptr";
+  ZipOpenErrorCode error_code;
+  std::unique_ptr<const DexFile> dex_file(OpenOneDexFileFromZip(zip_archive,
+                                                                kClassesDex,
+                                                                location,
+                                                                verify,
+                                                                verify_checksum,
+                                                                error_msg,
+                                                                &error_code));
+  if (dex_file.get() == nullptr) {
+    return false;
+  } else {
+    // Had at least classes.dex.
+    dex_files->push_back(std::move(dex_file));
+
+    // Now try some more.
+
+    // We could try to avoid std::string allocations by working on a char array directly. As we
+    // do not expect a lot of iterations, this seems too involved and brittle.
+
+    for (size_t i = 1; ; ++i) {
+      std::string name = GetMultiDexClassesDexName(i);
+      std::string fake_location = GetMultiDexLocation(i, location.c_str());
+      std::unique_ptr<const DexFile> next_dex_file(OpenOneDexFileFromZip(zip_archive,
+                                                                         name.c_str(),
+                                                                         fake_location,
+                                                                         verify,
+                                                                         verify_checksum,
+                                                                         error_msg,
+                                                                         &error_code));
+      if (next_dex_file.get() == nullptr) {
+        if (error_code != ZipOpenErrorCode::kEntryNotFound) {
+          LOG(WARNING) << "Zip open failed: " << *error_msg;
+        }
+        break;
+      } else {
+        dex_files->push_back(std::move(next_dex_file));
+      }
+
+      if (i == kWarnOnManyDexFilesThreshold) {
+        LOG(WARNING) << location << " has in excess of " << kWarnOnManyDexFilesThreshold
+                     << " dex files. Please consider coalescing and shrinking the number to "
+                        " avoid runtime overhead.";
+      }
+
+      if (i == std::numeric_limits<size_t>::max()) {
+        LOG(ERROR) << "Overflow in number of dex files!";
+        break;
+      }
+    }
+
+    return true;
+  }
+}
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/dex_file_loader.h

@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_LOADER_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_LOADER_H_
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace art_lkchan {
+
+class DexFile;
+class DexFileContainer;
+class MemMap;
+class OatDexFile;
+
+class DexZipArchive;
+
+// Class that is used to open dex files and deal with corresponding multidex and location logic.
+class DexFileLoader {
+ public:
+  // name of the DexFile entry within a zip archive
+  static constexpr const char* kClassesDex = "classes.dex";
+
+  // The separator character in MultiDex locations.
+  static constexpr char kMultiDexSeparator = '!';
+
+  // Return true if the magic is valid for dex or cdex.
+  static bool IsMagicValid(uint32_t magic);
+  static bool IsMagicValid(const uint8_t* magic);
+
+  // Return true if the corresponding version and magic is valid.
+  static bool IsVersionAndMagicValid(const uint8_t* magic);
+
+  // Check whether a location denotes a multidex dex file. This is a very simple check: returns
+  // whether the string contains the separator character.
+  static bool IsMultiDexLocation(const char* location);
+
+  // Return the name of the index-th classes.dex in a multidex zip file. This is classes.dex for
+  // index == 0, and classes{index + 1}.dex else.
+  static std::string GetMultiDexClassesDexName(size_t index);
+
+  // Return the (possibly synthetic) dex location for a multidex entry. This is dex_location for
+  // index == 0, and dex_location + multi-dex-separator + GetMultiDexClassesDexName(index) else.
+  static std::string GetMultiDexLocation(size_t index, const char* dex_location);
+
+  // Returns the canonical form of the given dex location.
+  //
+  // There are different flavors of "dex locations" as follows:
+  // the file name of a dex file:
+  //     The actual file path that the dex file has on disk.
+  // dex_location:
+  //     This acts as a key for the class linker to know which dex file to load.
+  //     It may correspond to either an old odex file or a particular dex file
+  //     inside an oat file. In the first case it will also match the file name
+  //     of the dex file. In the second case (oat) it will include the file name
+  //     and possibly some multidex annotation to uniquely identify it.
+  // canonical_dex_location:
+  //     the dex_location where its file name part has been made canonical.
+  static std::string GetDexCanonicalLocation(const char* dex_location);
+
+  // For normal dex files, location and base location coincide. If a dex file is part of a multidex
+  // archive, the base location is the name of the originating jar/apk, stripped of any internal
+  // classes*.dex path.
+  static std::string GetBaseLocation(const char* location) {
+    const char* pos = strrchr(location, kMultiDexSeparator);
+    return (pos == nullptr) ? location : std::string(location, pos - location);
+  }
+
+  static std::string GetBaseLocation(const std::string& location) {
+    return GetBaseLocation(location.c_str());
+  }
+
+  // Returns the '!classes*.dex' part of the dex location. Returns an empty
+  // string if there is no multidex suffix for the given location.
+  // The kMultiDexSeparator is included in the returned suffix.
+  static std::string GetMultiDexSuffix(const std::string& location) {
+    size_t pos = location.rfind(kMultiDexSeparator);
+    return (pos == std::string::npos) ? std::string() : location.substr(pos);
+  }
+
+  virtual ~DexFileLoader() { }
+
+  // Returns the checksums of a file for comparison with GetLocationChecksum().
+  // For .dex files, this is the single header checksum.
+  // For zip files, this is the zip entry CRC32 checksum for classes.dex and
+  // each additional multidex entry classes2.dex, classes3.dex, etc.
+  // If a valid zip_fd is provided the file content will be read directly from
+  // the descriptor and `filename` will be used as alias for error logging. If
+  // zip_fd is -1, the method will try to open the `filename` and read the
+  // content from it.
+  // Return true if the checksums could be found, false otherwise.
+  virtual bool GetMultiDexChecksums(const char* filename,
+                                    std::vector<uint32_t>* checksums,
+                                    std::string* error_msg,
+                                    int zip_fd = -1,
+                                    bool* zip_file_only_contains_uncompress_dex = nullptr) const;
+
+  // Opens .dex file, backed by existing memory
+  virtual std::unique_ptr<const DexFile> Open(const uint8_t* base,
+                                              size_t size,
+                                              const std::string& location,
+                                              uint32_t location_checksum,
+                                              const OatDexFile* oat_dex_file,
+                                              bool verify,
+                                              bool verify_checksum,
+                                              std::string* error_msg) const;
+
+  // Open a dex file with a separate data section.
+  virtual std::unique_ptr<const DexFile> OpenWithDataSection(
+      const uint8_t* base,
+      size_t size,
+      const uint8_t* data_base,
+      size_t data_size,
+      const std::string& location,
+      uint32_t location_checksum,
+      const OatDexFile* oat_dex_file,
+      bool verify,
+      bool verify_checksum,
+      std::string* error_msg) const;
+
+
+  // Opens all .dex files found in the memory map, guessing the container format based on file
+  // extension.
+  virtual bool OpenAll(const uint8_t* base,
+                       size_t size,
+                       const std::string& location,
+                       bool verify,
+                       bool verify_checksum,
+                       std::string* error_msg,
+                       std::vector<std::unique_ptr<const DexFile>>* dex_files) const;
+
+ protected:
+  enum class ZipOpenErrorCode {
+    kNoError,
+    kEntryNotFound,
+    kExtractToMemoryError,
+    kDexFileError,
+    kMakeReadOnlyError,
+    kVerifyError
+  };
+
+  enum class VerifyResult {  // private
+    kVerifyNotAttempted,
+    kVerifySucceeded,
+    kVerifyFailed
+  };
+
+  static std::unique_ptr<DexFile> OpenCommon(const uint8_t* base,
+                                             size_t size,
+                                             const uint8_t* data_base,
+                                             size_t data_size,
+                                             const std::string& location,
+                                             uint32_t location_checksum,
+                                             const OatDexFile* oat_dex_file,
+                                             bool verify,
+                                             bool verify_checksum,
+                                             std::string* error_msg,
+                                             std::unique_ptr<DexFileContainer> container,
+                                             VerifyResult* verify_result);
+
+ private:
+  // Open all classesXXX.dex files from a zip archive.
+  bool OpenAllDexFilesFromZip(const DexZipArchive& zip_archive,
+                              const std::string& location,
+                              bool verify,
+                              bool verify_checksum,
+                              std::string* error_msg,
+                              std::vector<std::unique_ptr<const DexFile>>* dex_files) const;
+
+  // Opens .dex file from the entry_name in a zip archive. error_code is undefined when non-null
+  // return.
+  std::unique_ptr<const DexFile> OpenOneDexFileFromZip(const DexZipArchive& zip_archive,
+                                                       const char* entry_name,
+                                                       const std::string& location,
+                                                       bool verify,
+                                                       bool verify_checksum,
+                                                       std::string* error_msg,
+                                                       ZipOpenErrorCode* error_code) const;
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_LOADER_H_

Bcore/src/main/cpp/dex/dex_file_reference.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_REFERENCE_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_REFERENCE_H_
+
+#include <cstdint>
+
+namespace art_lkchan {
+
+class DexFile;
+
+class DexFileReference {
+ public:
+  DexFileReference(const DexFile* file, uint32_t idx) : dex_file(file), index(idx) {}
+  const DexFile* dex_file;
+  uint32_t index;
+
+  struct Comparator {
+    bool operator()(const DexFileReference& a, const DexFileReference& b) const {
+      if (a.dex_file != b.dex_file) {
+        return a.dex_file < b.dex_file;
+      }
+      return a.index < b.index;
+    }
+  };
+};
+
+// Default comparators, compares the indicies, not the backing data.
+inline bool operator<(const DexFileReference& a, const DexFileReference& b) {
+  return DexFileReference::Comparator()(a, b);
+}
+inline bool operator==(const DexFileReference& a, const DexFileReference& b) {
+  return a.dex_file == b.dex_file && a.index == b.index;
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_REFERENCE_H_

Bcore/src/main/cpp/dex/dex_file_tracking_registrar.cc

@@ -0,0 +1,272 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex_file_tracking_registrar.h"
+
+#include <deque>
+#include <tuple>
+
+#include <android-base/logging.h>
+
+// For dex tracking through poisoning. Note: Requires forcing sanitization. This is the reason for
+// the ifdefs and early include.
+#ifdef ART_DEX_FILE_ACCESS_TRACKING
+#ifndef ART_ENABLE_ADDRESS_SANITIZER
+#define ART_ENABLE_ADDRESS_SANITIZER
+#endif
+#endif
+#include "base/memory_tool.h"
+
+#include "code_item_accessors-inl.h"
+#include "dex_file-inl.h"
+
+namespace art_lkchan {
+namespace dex {
+namespace tracking {
+
+// If true, poison dex files to track accesses.
+static constexpr bool kDexFileAccessTracking =
+#ifdef ART_DEX_FILE_ACCESS_TRACKING
+    true;
+#else
+    false;
+#endif
+
+// The following are configurations of poisoning certain sections of a Dex File.
+// More will be added
+enum DexTrackingType {
+  // Poisons all of a Dex File when set.
+  kWholeDexTracking,
+  // Poisons all Code Items of a Dex File when set.
+  kCodeItemTracking,
+  // Poisons all subsections of a Code Item, except the Insns bytecode array
+  // section, when set for all Code Items in a Dex File.
+  kCodeItemNonInsnsTracking,
+  // Poisons all subsections of a Code Item, except the Insns bytecode array
+  // section, when set for all Code Items in a Dex File.
+  // Additionally unpoisons the entire Code Item when method is a class
+  // initializer.
+  kCodeItemNonInsnsNoClinitTracking,
+  // Poisons the size and offset information along with the first instruction.
+  // This is so that accessing multiple instructions while accessing a code item
+  // once will not trigger unnecessary accesses.
+  kCodeItemStartTracking,
+  // Poisons all String Data Items of a Dex Files when set.
+  kStringDataItemTracking,
+  // Poisons the first byte of the utf16_size value and the first byte of the
+  // data section for all String Data Items of a Dex File.
+  kStringDataItemStartTracking,
+  // Poisons based on a custom tracking system which can be specified in
+  // SetDexSections
+  kCustomTracking,
+};
+
+// Intended for local changes only.
+// Represents the current configuration being run.
+static constexpr DexTrackingType kCurrentTrackingSystem = kWholeDexTracking;
+
+// Intended for local changes only.
+void DexFileTrackingRegistrar::SetDexSections() {
+  if (kDexFileAccessTracking && dex_file_ != nullptr) {
+    // Logs the Dex File's location and starting address if tracking is enabled
+    LOG(ERROR) << "RegisterDexFile: " << dex_file_->GetLocation() + " @ " << std::hex
+               << reinterpret_cast<uintptr_t>(dex_file_->Begin());
+    switch (kCurrentTrackingSystem) {
+      case kWholeDexTracking:
+        SetDexFileRegistration(true);
+        break;
+      case kCodeItemTracking:
+        SetAllCodeItemRegistration(true);
+        break;
+      case kCodeItemNonInsnsTracking:
+        SetAllCodeItemRegistration(true);
+        SetAllInsnsRegistration(false);
+        break;
+      case kCodeItemNonInsnsNoClinitTracking:
+        SetAllCodeItemRegistration(true);
+        SetAllInsnsRegistration(false);
+        SetCodeItemRegistration("<clinit>", false);
+        break;
+      case kCodeItemStartTracking:
+        SetAllCodeItemStartRegistration(true);
+        break;
+      case kStringDataItemTracking:
+        SetAllStringDataRegistration(true);
+        break;
+      case kStringDataItemStartTracking:
+        SetAllStringDataStartRegistration(true);
+        break;
+      case kCustomTracking:
+        // TODO: Add/remove additional calls here to (un)poison sections of
+        // dex_file_
+        break;
+      default:
+        break;
+    }
+  }
+}
+
+void RegisterDexFile(const DexFile* dex_file) {
+  DexFileTrackingRegistrar dex_tracking_registrar(dex_file);
+  dex_tracking_registrar.SetDexSections();
+  dex_tracking_registrar.SetCurrentRanges();
+}
+
+inline void SetRegistrationRange(const void* begin, size_t size, bool should_poison) {
+  if (should_poison) {
+   //chensenhua MEMORY_TOOL_MAKE_NOACCESS(begin, size);
+  } else {
+    // Note: MEMORY_TOOL_MAKE_UNDEFINED has the same functionality with Address
+    // chensenhua Sanitizer. The difference has not been tested with Valgrind
+    //MEMORY_TOOL_MAKE_DEFINED(begin, size);
+  }
+}
+
+void DexFileTrackingRegistrar::SetCurrentRanges() {
+  // This also empties range_values_ to avoid redundant (un)poisoning upon
+  // subsequent calls.
+  while (!range_values_.empty()) {
+    const std::tuple<const void*, size_t, bool>& current_range = range_values_.front();
+    SetRegistrationRange(std::get<0>(current_range),
+                         std::get<1>(current_range),
+                         std::get<2>(current_range));
+    range_values_.pop_front();
+  }
+}
+
+void DexFileTrackingRegistrar::SetDexFileRegistration(bool should_poison) {
+  const void* dex_file_begin = reinterpret_cast<const void*>(dex_file_->Begin());
+  size_t dex_file_size = dex_file_->Size();
+  range_values_.push_back(std::make_tuple(dex_file_begin, dex_file_size, should_poison));
+}
+
+void DexFileTrackingRegistrar::SetAllCodeItemRegistration(bool should_poison) {
+  for (size_t classdef_ctr = 0; classdef_ctr < dex_file_->NumClassDefs(); ++classdef_ctr) {
+    const DexFile::ClassDef& cd = dex_file_->GetClassDef(classdef_ctr);
+    const uint8_t* class_data = dex_file_->GetClassData(cd);
+    if (class_data != nullptr) {
+      ClassDataItemIterator cdit(*dex_file_, class_data);
+      cdit.SkipAllFields();
+      while (cdit.HasNextMethod()) {
+        const DexFile::CodeItem* code_item = cdit.GetMethodCodeItem();
+        if (code_item != nullptr) {
+          const void* code_item_begin = reinterpret_cast<const void*>(code_item);
+          size_t code_item_size = dex_file_->GetCodeItemSize(*code_item);
+          range_values_.push_back(std::make_tuple(code_item_begin, code_item_size, should_poison));
+        }
+        cdit.Next();
+      }
+    }
+  }
+}
+
+void DexFileTrackingRegistrar::SetAllCodeItemStartRegistration(bool should_poison) {
+  for (size_t classdef_ctr = 0; classdef_ctr < dex_file_->NumClassDefs(); ++classdef_ctr) {
+    const DexFile::ClassDef& cd = dex_file_->GetClassDef(classdef_ctr);
+    const uint8_t* class_data = dex_file_->GetClassData(cd);
+    if (class_data != nullptr) {
+      ClassDataItemIterator cdit(*dex_file_, class_data);
+      cdit.SkipAllFields();
+      while (cdit.HasNextMethod()) {
+        const DexFile::CodeItem* code_item = cdit.GetMethodCodeItem();
+        if (code_item != nullptr) {
+          const void* code_item_begin = reinterpret_cast<const void*>(code_item);
+          size_t code_item_start = reinterpret_cast<size_t>(code_item);
+          CodeItemInstructionAccessor accessor(*dex_file_, code_item);
+          size_t code_item_start_end = reinterpret_cast<size_t>(accessor.Insns());
+          size_t code_item_start_size = code_item_start_end - code_item_start;
+          range_values_.push_back(std::make_tuple(code_item_begin,
+                                                  code_item_start_size,
+                                                  should_poison));
+        }
+        cdit.Next();
+      }
+    }
+  }
+}
+
+void DexFileTrackingRegistrar::SetAllInsnsRegistration(bool should_poison) {
+  for (size_t classdef_ctr = 0; classdef_ctr < dex_file_->NumClassDefs(); ++classdef_ctr) {
+    const DexFile::ClassDef& cd = dex_file_->GetClassDef(classdef_ctr);
+    const uint8_t* class_data = dex_file_->GetClassData(cd);
+    if (class_data != nullptr) {
+      ClassDataItemIterator cdit(*dex_file_, class_data);
+      cdit.SkipAllFields();
+      while (cdit.HasNextMethod()) {
+        const DexFile::CodeItem* code_item = cdit.GetMethodCodeItem();
+        if (code_item != nullptr) {
+          CodeItemInstructionAccessor accessor(*dex_file_, code_item);
+          const void* insns_begin = reinterpret_cast<const void*>(accessor.Insns());
+          // Member insns_size_in_code_units_ is in 2-byte units
+          size_t insns_size = accessor.InsnsSizeInCodeUnits() * 2;
+          range_values_.push_back(std::make_tuple(insns_begin, insns_size, should_poison));
+        }
+        cdit.Next();
+      }
+    }
+  }
+}
+
+void DexFileTrackingRegistrar::SetCodeItemRegistration(const char* class_name, bool should_poison) {
+  for (size_t classdef_ctr = 0; classdef_ctr < dex_file_->NumClassDefs(); ++classdef_ctr) {
+    const DexFile::ClassDef& cd = dex_file_->GetClassDef(classdef_ctr);
+    const uint8_t* class_data = dex_file_->GetClassData(cd);
+    if (class_data != nullptr) {
+      ClassDataItemIterator cdit(*dex_file_, class_data);
+      cdit.SkipAllFields();
+      while (cdit.HasNextMethod()) {
+        const DexFile::MethodId& methodid_item = dex_file_->GetMethodId(cdit.GetMemberIndex());
+        const char * methodid_name = dex_file_->GetMethodName(methodid_item);
+        const DexFile::CodeItem* code_item = cdit.GetMethodCodeItem();
+        if (code_item != nullptr && strcmp(methodid_name, class_name) == 0) {
+          const void* code_item_begin = reinterpret_cast<const void*>(code_item);
+          size_t code_item_size = dex_file_->GetCodeItemSize(*code_item);
+          range_values_.push_back(std::make_tuple(code_item_begin, code_item_size, should_poison));
+        }
+        cdit.Next();
+      }
+    }
+  }
+}
+
+void DexFileTrackingRegistrar::SetAllStringDataStartRegistration(bool should_poison) {
+  for (size_t stringid_ctr = 0; stringid_ctr < dex_file_->NumStringIds(); ++stringid_ctr) {
+    const DexFile::StringId & string_id = dex_file_->GetStringId(StringIndex(stringid_ctr));
+    const void* string_data_begin = reinterpret_cast<const void*>(dex_file_->Begin() + string_id.string_data_off_);
+    // Data Section of String Data Item
+    const void* string_data_data_begin = reinterpret_cast<const void*>(dex_file_->GetStringData(string_id));
+    range_values_.push_back(std::make_tuple(string_data_begin, 1, should_poison));
+    range_values_.push_back(std::make_tuple(string_data_data_begin, 1, should_poison));
+  }
+}
+
+void DexFileTrackingRegistrar::SetAllStringDataRegistration(bool should_poison) {
+  size_t map_offset = dex_file_->GetHeader().map_off_;
+  auto map_list = reinterpret_cast<const DexFile::MapList*>(dex_file_->Begin() + map_offset);
+  for (size_t map_ctr = 0; map_ctr < map_list->size_; ++map_ctr) {
+    const DexFile::MapItem& map_item = map_list->list_[map_ctr];
+    if (map_item.type_ == DexFile::kDexTypeStringDataItem) {
+      const DexFile::MapItem& next_map_item = map_list->list_[map_ctr + 1];
+      const void* string_data_begin = reinterpret_cast<const void*>(dex_file_->Begin() + map_item.offset_);
+      size_t string_data_size = next_map_item.offset_ - map_item.offset_;
+      range_values_.push_back(std::make_tuple(string_data_begin, string_data_size, should_poison));
+    }
+  }
+}
+
+}  // namespace tracking
+}  // namespace dex
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/dex_file_tracking_registrar.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_TRACKING_REGISTRAR_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_TRACKING_REGISTRAR_H_
+
+#include <deque>
+#include <tuple>
+
+#include "dex_file.h"
+
+namespace art_lkchan {
+namespace dex {
+namespace tracking {
+
+// Class for (un)poisoning various sections of Dex Files
+//
+// This class provides the means to log accesses only of sections whose
+// accesses are needed. All accesses are displayed as stack traces in
+// logcat.
+class DexFileTrackingRegistrar {
+ public:
+  explicit DexFileTrackingRegistrar(const DexFile* const dex_file)
+      : dex_file_(dex_file) {
+  }
+
+  // This function is where the functions below it are called to actually
+  // poison sections.
+  void SetDexSections();
+
+  // Uses data contained inside range_values_ to poison memory through the
+  // memory tool.
+  void SetCurrentRanges();
+
+ private:
+  void SetDexFileRegistration(bool should_poison);
+
+  // Set of functions concerning Code Items of dex_file_
+  void SetAllCodeItemRegistration(bool should_poison);
+  // Sets the insns_ section of all code items.
+  void SetAllInsnsRegistration(bool should_poison);
+  // This function finds the code item of a class based on class name.
+  void SetCodeItemRegistration(const char* class_name, bool should_poison);
+  // Sets the size and offset information along with first instruction in insns_
+  // section of all code items.
+  void SetAllCodeItemStartRegistration(bool should_poison);
+
+  // Set of functions concerning String Data Items of dex_file_
+  void SetAllStringDataRegistration(bool should_poison);
+  // Sets the first byte of size value and data section of all string data
+  // items.
+  void SetAllStringDataStartRegistration(bool should_poison);
+
+  // Contains tuples of all ranges of memory that need to be explicitly
+  // (un)poisoned by the memory tool.
+  std::deque<std::tuple<const void *, size_t, bool>> range_values_;
+
+  const DexFile* const dex_file_;
+};
+
+// This function is meant to called externally to use DexfileTrackingRegistrar
+void RegisterDexFile(const DexFile* dex_file);
+
+}  // namespace tracking
+}  // namespace dex
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_TRACKING_REGISTRAR_H_

Bcore/src/main/cpp/dex/dex_file_types.h

@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_TYPES_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_TYPES_H_
+
+#include <limits>
+#include <ostream>
+
+namespace art_lkchan {
+namespace dex {
+
+constexpr uint32_t kDexNoIndex = 0xFFFFFFFF;
+
+class StringIndex {
+ public:
+  uint32_t index_;
+
+  constexpr StringIndex() : index_(std::numeric_limits<decltype(index_)>::max()) {}
+  explicit constexpr StringIndex(uint32_t idx) : index_(idx) {}
+
+  bool IsValid() const {
+    return index_ != std::numeric_limits<decltype(index_)>::max();
+  }
+  static StringIndex Invalid() {
+    return StringIndex(std::numeric_limits<decltype(index_)>::max());
+  }
+
+  bool operator==(const StringIndex& other) const {
+    return index_ == other.index_;
+  }
+  bool operator!=(const StringIndex& other) const {
+    return index_ != other.index_;
+  }
+  bool operator<(const StringIndex& other) const {
+    return index_ < other.index_;
+  }
+  bool operator<=(const StringIndex& other) const {
+    return index_ <= other.index_;
+  }
+  bool operator>(const StringIndex& other) const {
+    return index_ > other.index_;
+  }
+  bool operator>=(const StringIndex& other) const {
+    return index_ >= other.index_;
+  }
+};
+std::ostream& operator<<(std::ostream& os, const StringIndex& index);
+
+class TypeIndex {
+ public:
+  uint16_t index_;
+
+  constexpr TypeIndex() : index_(std::numeric_limits<decltype(index_)>::max()) {}
+  explicit constexpr TypeIndex(uint16_t idx) : index_(idx) {}
+
+  bool IsValid() const {
+    return index_ != std::numeric_limits<decltype(index_)>::max();
+  }
+  static TypeIndex Invalid() {
+    return TypeIndex(std::numeric_limits<decltype(index_)>::max());
+  }
+
+  bool operator==(const TypeIndex& other) const {
+    return index_ == other.index_;
+  }
+  bool operator!=(const TypeIndex& other) const {
+    return index_ != other.index_;
+  }
+  bool operator<(const TypeIndex& other) const {
+    return index_ < other.index_;
+  }
+  bool operator<=(const TypeIndex& other) const {
+    return index_ <= other.index_;
+  }
+  bool operator>(const TypeIndex& other) const {
+    return index_ > other.index_;
+  }
+  bool operator>=(const TypeIndex& other) const {
+    return index_ >= other.index_;
+  }
+};
+std::ostream& operator<<(std::ostream& os, const TypeIndex& index);
+
+}  // namespace dex
+}  // namespace art_lkchan
+
+namespace std {
+
+template<> struct hash<art_lkchan::dex::StringIndex> {
+  size_t operator()(const art_lkchan::dex::StringIndex& index) const {
+    return hash<uint32_t>()(index.index_);
+  }
+};
+
+template<> struct hash<art_lkchan::dex::TypeIndex> {
+  size_t operator()(const art_lkchan::dex::TypeIndex& index) const {
+    return hash<uint16_t>()(index.index_);
+  }
+};
+
+}  // namespace std
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_TYPES_H_

Bcore/src/main/cpp/dex/dex_file_verifier.h

@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_VERIFIER_H_
+#define ART_LIBDEXFILE_DEX_DEX_FILE_VERIFIER_H_
+
+#include <unordered_set>
+
+#include "base/hash_map.h"
+#include "base/safe_map.h"
+#include "dex_file.h"
+#include "dex_file_types.h"
+
+namespace art_lkchan {
+
+class DexFileVerifier {
+ public:
+  static bool Verify(const DexFile* dex_file,
+                     const uint8_t* begin,
+                     size_t size,
+                     const char* location,
+                     bool verify_checksum,
+                     std::string* error_msg);
+
+  const std::string& FailureReason() const {
+    return failure_reason_;
+  }
+
+ private:
+  DexFileVerifier(const DexFile* dex_file,
+                  const uint8_t* begin,
+                  size_t size,
+                  const char* location,
+                  bool verify_checksum)
+      : dex_file_(dex_file),
+        begin_(begin),
+        size_(size),
+        location_(location),
+        verify_checksum_(verify_checksum),
+        header_(&dex_file->GetHeader()),
+        ptr_(nullptr),
+        previous_item_(nullptr)  {
+  }
+
+  bool Verify();
+
+  bool CheckShortyDescriptorMatch(char shorty_char, const char* descriptor, bool is_return_type);
+  bool CheckListSize(const void* start, size_t count, size_t element_size, const char* label);
+  // Check a list. The head is assumed to be at *ptr, and elements to be of size element_size. If
+  // successful, the ptr will be moved forward the amount covered by the list.
+  bool CheckList(size_t element_size, const char* label, const uint8_t* *ptr);
+  // Checks whether the offset is zero (when size is zero) or that the offset falls within the area
+  // claimed by the file.
+  bool CheckValidOffsetAndSize(uint32_t offset, uint32_t size, size_t alignment, const char* label);
+  // Checks whether the size is less than the limit.
+  bool CheckSizeLimit(uint32_t size, uint32_t limit, const char* label);
+  bool CheckIndex(uint32_t field, uint32_t limit, const char* label);
+
+  bool CheckHeader();
+  bool CheckMap();
+
+  uint32_t ReadUnsignedLittleEndian(uint32_t size);
+  bool CheckAndGetHandlerOffsets(const DexFile::CodeItem* code_item,
+                                 uint32_t* handler_offsets, uint32_t handlers_size);
+  bool CheckClassDataItemField(uint32_t idx,
+                               uint32_t access_flags,
+                               uint32_t class_access_flags,
+                               dex::TypeIndex class_type_index,
+                               bool expect_static);
+  bool CheckClassDataItemMethod(uint32_t idx,
+                                uint32_t access_flags,
+                                uint32_t class_access_flags,
+                                dex::TypeIndex class_type_index,
+                                uint32_t code_offset,
+                                std::unordered_set<uint32_t>* direct_method_indexes,
+                                bool expect_direct);
+  bool CheckOrderAndGetClassDef(bool is_field,
+                                const char* type_descr,
+                                uint32_t curr_index,
+                                uint32_t prev_index,
+                                bool* have_class,
+                                dex::TypeIndex* class_type_index,
+                                const DexFile::ClassDef** class_def);
+  bool CheckStaticFieldTypes(const DexFile::ClassDef* class_def);
+
+  bool CheckPadding(size_t offset, uint32_t aligned_offset, DexFile::MapItemType type);
+  bool CheckEncodedValue();
+  bool CheckEncodedArray();
+  bool CheckEncodedAnnotation();
+
+  bool CheckIntraClassDataItem();
+  // Check all fields of the given type from the given iterator. Load the class data from the first
+  // field, if necessary (and return it), or use the given values.
+  template <bool kStatic>
+  bool CheckIntraClassDataItemFields(ClassDataItemIterator* it,
+                                     bool* have_class,
+                                     dex::TypeIndex* class_type_index,
+                                     const DexFile::ClassDef** class_def);
+  // Check all methods of the given type from the given iterator. Load the class data from the first
+  // method, if necessary (and return it), or use the given values.
+  template <bool kDirect>
+  bool CheckIntraClassDataItemMethods(ClassDataItemIterator* it,
+                                      std::unordered_set<uint32_t>* direct_method_indexes,
+                                      bool* have_class,
+                                      dex::TypeIndex* class_type_index,
+                                      const DexFile::ClassDef** class_def);
+
+  bool CheckIntraCodeItem();
+  bool CheckIntraStringDataItem();
+  bool CheckIntraDebugInfoItem();
+  bool CheckIntraAnnotationItem();
+  bool CheckIntraAnnotationsDirectoryItem();
+
+  bool CheckIntraSectionIterate(size_t offset, uint32_t count, DexFile::MapItemType type);
+  bool CheckIntraIdSection(size_t offset, uint32_t count, DexFile::MapItemType type);
+  bool CheckIntraDataSection(size_t offset, uint32_t count, DexFile::MapItemType type);
+  bool CheckIntraSection();
+
+  bool CheckOffsetToTypeMap(size_t offset, uint16_t type);
+
+  // Note: as sometimes kDexNoIndex16, being 0xFFFF, is a valid return value, we need an
+  // additional out parameter to signal any errors loading an index.
+  dex::TypeIndex FindFirstClassDataDefiner(const uint8_t* ptr, bool* success);
+  dex::TypeIndex FindFirstAnnotationsDirectoryDefiner(const uint8_t* ptr, bool* success);
+
+  bool CheckInterStringIdItem();
+  bool CheckInterTypeIdItem();
+  bool CheckInterProtoIdItem();
+  bool CheckInterFieldIdItem();
+  bool CheckInterMethodIdItem();
+  bool CheckInterClassDefItem();
+  bool CheckInterCallSiteIdItem();
+  bool CheckInterMethodHandleItem();
+  bool CheckInterAnnotationSetRefList();
+  bool CheckInterAnnotationSetItem();
+  bool CheckInterClassDataItem();
+  bool CheckInterAnnotationsDirectoryItem();
+
+  bool CheckInterSectionIterate(size_t offset, uint32_t count, DexFile::MapItemType type);
+  bool CheckInterSection();
+
+  // Load a string by (type) index. Checks whether the index is in bounds, printing the error if
+  // not. If there is an error, null is returned.
+  const char* CheckLoadStringByIdx(dex::StringIndex idx, const char* error_fmt);
+  const char* CheckLoadStringByTypeIdx(dex::TypeIndex type_idx, const char* error_fmt);
+
+  // Load a field/method/proto Id by index. Checks whether the index is in bounds, printing the
+  // error if not. If there is an error, null is returned.
+  const DexFile::FieldId* CheckLoadFieldId(uint32_t idx, const char* error_fmt);
+  const DexFile::MethodId* CheckLoadMethodId(uint32_t idx, const char* error_fmt);
+  const DexFile::ProtoId* CheckLoadProtoId(uint32_t idx, const char* error_fmt);
+
+  void ErrorStringPrintf(const char* fmt, ...)
+      __attribute__((__format__(__printf__, 2, 3))) COLD_ATTR;
+  bool FailureReasonIsSet() const { return failure_reason_.size() != 0; }
+
+  // Retrieve class index and class def from the given member. index is the member index, which is
+  // taken as either a field or a method index (as designated by is_field). The result, if the
+  // member and declaring class could be found, is stored in class_type_index and class_def.
+  // This is an expensive lookup, as we have to find the class def by type index, which is a
+  // linear search. The output values should thus be cached by the caller.
+  bool FindClassIndexAndDef(uint32_t index,
+                            bool is_field,
+                            dex::TypeIndex* class_type_index,
+                            const DexFile::ClassDef** output_class_def);
+
+  // Check validity of the given access flags, interpreted for a field in the context of a class
+  // with the given second access flags.
+  bool CheckFieldAccessFlags(uint32_t idx,
+                             uint32_t field_access_flags,
+                             uint32_t class_access_flags,
+                             std::string* error_message);
+
+  // Check validity of the given method and access flags, in the context of a class with the given
+  // second access flags.
+  bool CheckMethodAccessFlags(uint32_t method_index,
+                              uint32_t method_access_flags,
+                              uint32_t class_access_flags,
+                              uint32_t constructor_flags_by_name,
+                              bool has_code,
+                              bool expect_direct,
+                              std::string* error_message);
+
+  // Check validity of given method if it's a constructor or class initializer.
+  bool CheckConstructorProperties(uint32_t method_index, uint32_t constructor_flags);
+
+  const DexFile* const dex_file_;
+  const uint8_t* const begin_;
+  const size_t size_;
+  const char* const location_;
+  const bool verify_checksum_;
+  const DexFile::Header* const header_;
+
+  struct OffsetTypeMapEmptyFn {
+    // Make a hash map slot empty by making the offset 0. Offset 0 is a valid dex file offset that
+    // is in the offset of the dex file header. However, we only store data section items in the
+    // map, and these are after the header.
+    void MakeEmpty(std::pair<uint32_t, uint16_t>& pair) const {
+      pair.first = 0u;
+    }
+    // Check if a hash map slot is empty.
+    bool IsEmpty(const std::pair<uint32_t, uint16_t>& pair) const {
+      return pair.first == 0;
+    }
+  };
+  struct OffsetTypeMapHashCompareFn {
+    // Hash function for offset.
+    size_t operator()(const uint32_t key) const {
+      return key;
+    }
+    // std::equal function for offset.
+    bool operator()(const uint32_t a, const uint32_t b) const {
+      return a == b;
+    }
+  };
+  // Map from offset to dex file type, HashMap for performance reasons.
+  HashMap<uint32_t,
+          uint16_t,
+          OffsetTypeMapEmptyFn,
+          OffsetTypeMapHashCompareFn,
+          OffsetTypeMapHashCompareFn> offset_to_type_map_;
+  const uint8_t* ptr_;
+  const void* previous_item_;
+
+  std::string failure_reason_;
+
+  // Set of type ids for which there are ClassDef elements in the dex file.
+  std::unordered_set<decltype(DexFile::ClassDef::class_idx_)> defined_classes_;
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_FILE_VERIFIER_H_

Bcore/src/main/cpp/dex/dex_instruction-inl.h

@@ -0,0 +1,558 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_INL_H_
+#define ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_INL_H_
+
+#include "dex_instruction.h"
+
+namespace art_lkchan {
+
+//------------------------------------------------------------------------------
+// VRegA
+//------------------------------------------------------------------------------
+inline bool Instruction::HasVRegA() const {
+  switch (FormatOf(Opcode())) {
+    case k10t: return true;
+    case k10x: return true;
+    case k11n: return true;
+    case k11x: return true;
+    case k12x: return true;
+    case k20t: return true;
+    case k21c: return true;
+    case k21h: return true;
+    case k21s: return true;
+    case k21t: return true;
+    case k22b: return true;
+    case k22c: return true;
+    case k22s: return true;
+    case k22t: return true;
+    case k22x: return true;
+    case k23x: return true;
+    case k30t: return true;
+    case k31c: return true;
+    case k31i: return true;
+    case k31t: return true;
+    case k32x: return true;
+    case k35c: return true;
+    case k3rc: return true;
+    case k45cc: return true;
+    case k4rcc: return true;
+    case k51l: return true;
+    default: return false;
+  }
+}
+
+inline int32_t Instruction::VRegA() const {
+  switch (FormatOf(Opcode())) {
+    case k10t: return VRegA_10t();
+    case k10x: return VRegA_10x();
+    case k11n: return VRegA_11n();
+    case k11x: return VRegA_11x();
+    case k12x: return VRegA_12x();
+    case k20t: return VRegA_20t();
+    case k21c: return VRegA_21c();
+    case k21h: return VRegA_21h();
+    case k21s: return VRegA_21s();
+    case k21t: return VRegA_21t();
+    case k22b: return VRegA_22b();
+    case k22c: return VRegA_22c();
+    case k22s: return VRegA_22s();
+    case k22t: return VRegA_22t();
+    case k22x: return VRegA_22x();
+    case k23x: return VRegA_23x();
+    case k30t: return VRegA_30t();
+    case k31c: return VRegA_31c();
+    case k31i: return VRegA_31i();
+    case k31t: return VRegA_31t();
+    case k32x: return VRegA_32x();
+    case k35c: return VRegA_35c();
+    case k3rc: return VRegA_3rc();
+    case k45cc: return VRegA_45cc();
+    case k4rcc: return VRegA_4rcc();
+    case k51l: return VRegA_51l();
+    default:
+      LOG(FATAL) << "Tried to access vA of instruction " << Name() << " which has no A operand.";
+      exit(EXIT_FAILURE);
+  }
+}
+
+inline int8_t Instruction::VRegA_10t(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k10t);
+  return static_cast<int8_t>(InstAA(inst_data));
+}
+
+inline uint8_t Instruction::VRegA_10x(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k10x);
+  return InstAA(inst_data);
+}
+
+inline uint4_t Instruction::VRegA_11n(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k11n);
+  return InstA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_11x(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k11x);
+  return InstAA(inst_data);
+}
+
+inline uint4_t Instruction::VRegA_12x(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k12x);
+  return InstA(inst_data);
+}
+
+inline int16_t Instruction::VRegA_20t() const {
+  DCHECK_EQ(FormatOf(Opcode()), k20t);
+  return static_cast<int16_t>(Fetch16(1));
+}
+
+inline uint8_t Instruction::VRegA_21c(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k21c);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_21h(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k21h);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_21s(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k21s);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_21t(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k21t);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_22b(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22b);
+  return InstAA(inst_data);
+}
+
+inline uint4_t Instruction::VRegA_22c(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22c);
+  return InstA(inst_data);
+}
+
+inline uint4_t Instruction::VRegA_22s(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22s);
+  return InstA(inst_data);
+}
+
+inline uint4_t Instruction::VRegA_22t(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22t);
+  return InstA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_22x(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22x);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_23x(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k23x);
+  return InstAA(inst_data);
+}
+
+inline int32_t Instruction::VRegA_30t() const {
+  DCHECK_EQ(FormatOf(Opcode()), k30t);
+  return static_cast<int32_t>(Fetch32(1));
+}
+
+inline uint8_t Instruction::VRegA_31c(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k31c);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_31i(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k31i);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_31t(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k31t);
+  return InstAA(inst_data);
+}
+
+inline uint16_t Instruction::VRegA_32x() const {
+  DCHECK_EQ(FormatOf(Opcode()), k32x);
+  return Fetch16(1);
+}
+
+inline uint4_t Instruction::VRegA_35c(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k35c);
+  return InstB(inst_data);  // This is labeled A in the spec.
+}
+
+inline uint8_t Instruction::VRegA_3rc(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k3rc);
+  return InstAA(inst_data);
+}
+
+inline uint8_t Instruction::VRegA_51l(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k51l);
+  return InstAA(inst_data);
+}
+
+inline uint4_t Instruction::VRegA_45cc(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k45cc);
+  return InstB(inst_data);  // This is labeled A in the spec.
+}
+
+inline uint8_t Instruction::VRegA_4rcc(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k4rcc);
+  return InstAA(inst_data);
+}
+
+//------------------------------------------------------------------------------
+// VRegB
+//------------------------------------------------------------------------------
+inline bool Instruction::HasVRegB() const {
+  switch (FormatOf(Opcode())) {
+    case k11n: return true;
+    case k12x: return true;
+    case k21c: return true;
+    case k21h: return true;
+    case k21s: return true;
+    case k21t: return true;
+    case k22b: return true;
+    case k22c: return true;
+    case k22s: return true;
+    case k22t: return true;
+    case k22x: return true;
+    case k23x: return true;
+    case k31c: return true;
+    case k31i: return true;
+    case k31t: return true;
+    case k32x: return true;
+    case k35c: return true;
+    case k3rc: return true;
+    case k45cc: return true;
+    case k4rcc: return true;
+    case k51l: return true;
+    default: return false;
+  }
+}
+
+inline bool Instruction::HasWideVRegB() const {
+  return FormatOf(Opcode()) == k51l;
+}
+
+inline int32_t Instruction::VRegB() const {
+  switch (FormatOf(Opcode())) {
+    case k11n: return VRegB_11n();
+    case k12x: return VRegB_12x();
+    case k21c: return VRegB_21c();
+    case k21h: return VRegB_21h();
+    case k21s: return VRegB_21s();
+    case k21t: return VRegB_21t();
+    case k22b: return VRegB_22b();
+    case k22c: return VRegB_22c();
+    case k22s: return VRegB_22s();
+    case k22t: return VRegB_22t();
+    case k22x: return VRegB_22x();
+    case k23x: return VRegB_23x();
+    case k31c: return VRegB_31c();
+    case k31i: return VRegB_31i();
+    case k31t: return VRegB_31t();
+    case k32x: return VRegB_32x();
+    case k35c: return VRegB_35c();
+    case k3rc: return VRegB_3rc();
+    case k45cc: return VRegB_45cc();
+    case k4rcc: return VRegB_4rcc();
+    case k51l: return VRegB_51l();
+    default:
+      LOG(FATAL) << "Tried to access vB of instruction " << Name() << " which has no B operand.";
+      exit(EXIT_FAILURE);
+  }
+}
+
+inline uint64_t Instruction::WideVRegB() const {
+  return VRegB_51l();
+}
+
+inline int4_t Instruction::VRegB_11n(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k11n);
+  return static_cast<int4_t>((InstB(inst_data) << 28) >> 28);
+}
+
+inline uint4_t Instruction::VRegB_12x(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k12x);
+  return InstB(inst_data);
+}
+
+inline uint16_t Instruction::VRegB_21c() const {
+  DCHECK_EQ(FormatOf(Opcode()), k21c);
+  return Fetch16(1);
+}
+
+inline uint16_t Instruction::VRegB_21h() const {
+  DCHECK_EQ(FormatOf(Opcode()), k21h);
+  return Fetch16(1);
+}
+
+inline int16_t Instruction::VRegB_21s() const {
+  DCHECK_EQ(FormatOf(Opcode()), k21s);
+  return static_cast<int16_t>(Fetch16(1));
+}
+
+inline int16_t Instruction::VRegB_21t() const {
+  DCHECK_EQ(FormatOf(Opcode()), k21t);
+  return static_cast<int16_t>(Fetch16(1));
+}
+
+inline uint8_t Instruction::VRegB_22b() const {
+  DCHECK_EQ(FormatOf(Opcode()), k22b);
+  return static_cast<uint8_t>(Fetch16(1) & 0xff);
+}
+
+inline uint4_t Instruction::VRegB_22c(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22c);
+  return InstB(inst_data);
+}
+
+inline uint4_t Instruction::VRegB_22s(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22s);
+  return InstB(inst_data);
+}
+
+inline uint4_t Instruction::VRegB_22t(uint16_t inst_data) const {
+  DCHECK_EQ(FormatOf(Opcode()), k22t);
+  return InstB(inst_data);
+}
+
+inline uint16_t Instruction::VRegB_22x() const {
+  DCHECK_EQ(FormatOf(Opcode()), k22x);
+  return Fetch16(1);
+}
+
+inline uint8_t Instruction::VRegB_23x() const {
+  DCHECK_EQ(FormatOf(Opcode()), k23x);
+  return static_cast<uint8_t>(Fetch16(1) & 0xff);
+}
+
+inline uint32_t Instruction::VRegB_31c() const {
+  DCHECK_EQ(FormatOf(Opcode()), k31c);
+  return Fetch32(1);
+}
+
+inline int32_t Instruction::VRegB_31i() const {
+  DCHECK_EQ(FormatOf(Opcode()), k31i);
+  return static_cast<int32_t>(Fetch32(1));
+}
+
+inline int32_t Instruction::VRegB_31t() const {
+  DCHECK_EQ(FormatOf(Opcode()), k31t);
+  return static_cast<int32_t>(Fetch32(1));
+}
+
+inline uint16_t Instruction::VRegB_32x() const {
+  DCHECK_EQ(FormatOf(Opcode()), k32x);
+  return Fetch16(2);
+}
+
+inline uint16_t Instruction::VRegB_35c() const {
+  DCHECK_EQ(FormatOf(Opcode()), k35c);
+  return Fetch16(1);
+}
+
+inline uint16_t Instruction::VRegB_3rc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k3rc);
+  return Fetch16(1);
+}
+
+inline uint16_t Instruction::VRegB_45cc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k45cc);
+  return Fetch16(1);
+}
+
+inline uint16_t Instruction::VRegB_4rcc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k4rcc);
+  return Fetch16(1);
+}
+
+inline uint64_t Instruction::VRegB_51l() const {
+  DCHECK_EQ(FormatOf(Opcode()), k51l);
+  uint64_t vB_wide = Fetch32(1) | ((uint64_t) Fetch32(3) << 32);
+  return vB_wide;
+}
+
+//------------------------------------------------------------------------------
+// VRegC
+//------------------------------------------------------------------------------
+inline bool Instruction::HasVRegC() const {
+  switch (FormatOf(Opcode())) {
+    case k22b: return true;
+    case k22c: return true;
+    case k22s: return true;
+    case k22t: return true;
+    case k23x: return true;
+    case k35c: return true;
+    case k3rc: return true;
+    case k45cc: return true;
+    case k4rcc: return true;
+    default: return false;
+  }
+}
+
+inline int32_t Instruction::VRegC() const {
+  switch (FormatOf(Opcode())) {
+    case k22b: return VRegC_22b();
+    case k22c: return VRegC_22c();
+    case k22s: return VRegC_22s();
+    case k22t: return VRegC_22t();
+    case k23x: return VRegC_23x();
+    case k35c: return VRegC_35c();
+    case k3rc: return VRegC_3rc();
+    case k45cc: return VRegC_45cc();
+    case k4rcc: return VRegC_4rcc();
+    default:
+      LOG(FATAL) << "Tried to access vC of instruction " << Name() << " which has no C operand.";
+      exit(EXIT_FAILURE);
+  }
+}
+
+inline int8_t Instruction::VRegC_22b() const {
+  DCHECK_EQ(FormatOf(Opcode()), k22b);
+  return static_cast<int8_t>(Fetch16(1) >> 8);
+}
+
+inline uint16_t Instruction::VRegC_22c() const {
+  DCHECK_EQ(FormatOf(Opcode()), k22c);
+  return Fetch16(1);
+}
+
+inline int16_t Instruction::VRegC_22s() const {
+  DCHECK_EQ(FormatOf(Opcode()), k22s);
+  return static_cast<int16_t>(Fetch16(1));
+}
+
+inline int16_t Instruction::VRegC_22t() const {
+  DCHECK_EQ(FormatOf(Opcode()), k22t);
+  return static_cast<int16_t>(Fetch16(1));
+}
+
+inline uint8_t Instruction::VRegC_23x() const {
+  DCHECK_EQ(FormatOf(Opcode()), k23x);
+  return static_cast<uint8_t>(Fetch16(1) >> 8);
+}
+
+inline uint4_t Instruction::VRegC_35c() const {
+  DCHECK_EQ(FormatOf(Opcode()), k35c);
+  return static_cast<uint4_t>(Fetch16(2) & 0x0f);
+}
+
+inline uint16_t Instruction::VRegC_3rc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k3rc);
+  return Fetch16(2);
+}
+
+inline uint4_t Instruction::VRegC_45cc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k45cc);
+  return static_cast<uint4_t>(Fetch16(2) & 0x0f);
+}
+
+inline uint16_t Instruction::VRegC_4rcc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k4rcc);
+  return Fetch16(2);
+}
+
+//------------------------------------------------------------------------------
+// VRegH
+//------------------------------------------------------------------------------
+inline bool Instruction::HasVRegH() const {
+  switch (FormatOf(Opcode())) {
+    case k45cc: return true;
+    case k4rcc: return true;
+    default : return false;
+  }
+}
+
+inline int32_t Instruction::VRegH() const {
+  switch (FormatOf(Opcode())) {
+    case k45cc: return VRegH_45cc();
+    case k4rcc: return VRegH_4rcc();
+    default :
+      LOG(FATAL) << "Tried to access vH of instruction " << Name() << " which has no H operand.";
+      exit(EXIT_FAILURE);
+  }
+}
+
+inline uint16_t Instruction::VRegH_45cc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k45cc);
+  return Fetch16(3);
+}
+
+inline uint16_t Instruction::VRegH_4rcc() const {
+  DCHECK_EQ(FormatOf(Opcode()), k4rcc);
+  return Fetch16(3);
+}
+
+inline bool Instruction::HasVarArgs() const {
+  return (FormatOf(Opcode()) == k35c) || (FormatOf(Opcode()) == k45cc);
+}
+
+inline void Instruction::GetVarArgs(uint32_t arg[kMaxVarArgRegs], uint16_t inst_data) const {
+  DCHECK(HasVarArgs());
+
+  /*
+   * Note that the fields mentioned in the spec don't appear in
+   * their "usual" positions here compared to most formats. This
+   * was done so that the field names for the argument count and
+   * reference index match between this format and the corresponding
+   * range formats (3rc and friends).
+   *
+   * Bottom line: The argument count is always in vA, and the
+   * method constant (or equivalent) is always in vB.
+   */
+  uint16_t regList = Fetch16(2);
+  uint4_t count = InstB(inst_data);  // This is labeled A in the spec.
+  DCHECK_LE(count, 5U) << "Invalid arg count in 35c (" << count << ")";
+
+  /*
+   * Copy the argument registers into the arg[] array, and
+   * also copy the first argument (if any) into vC. (The
+   * DecodedInstruction structure doesn't have separate
+   * fields for {vD, vE, vF, vG}, so there's no need to make
+   * copies of those.) Note that cases 5..2 fall through.
+   */
+  switch (count) {
+    case 5:
+      arg[4] = InstA(inst_data);
+      FALLTHROUGH_INTENDED;
+    case 4:
+      arg[3] = (regList >> 12) & 0x0f;
+      FALLTHROUGH_INTENDED;
+    case 3:
+      arg[2] = (regList >> 8) & 0x0f;
+      FALLTHROUGH_INTENDED;
+    case 2:
+      arg[1] = (regList >> 4) & 0x0f;
+      FALLTHROUGH_INTENDED;
+    case 1:
+      arg[0] = regList & 0x0f;
+      break;
+    default:  // case 0
+      break;  // Valid, but no need to do anything.
+  }
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_INL_H_

Bcore/src/main/cpp/dex/dex_instruction.cc

@@ -0,0 +1,581 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex_instruction-inl.h"
+
+#include <inttypes.h>
+
+#include <iomanip>
+#include <sstream>
+
+#include "android-base/stringprintf.h"
+
+#include "dex_file-inl.h"
+#include "utf.h"
+
+namespace art_lkchan {
+
+using android_lkchan::base::StringPrintf;
+
+const char* const Instruction::kInstructionNames[] = {
+#define INSTRUCTION_NAME(o, c, pname, f, i, a, e, v) pname,
+#include "dex_instruction_list.h"
+  DEX_INSTRUCTION_LIST(INSTRUCTION_NAME)
+#undef DEX_INSTRUCTION_LIST
+#undef INSTRUCTION_NAME
+};
+
+static_assert(sizeof(Instruction::InstructionDescriptor) == 8u, "Unexpected descriptor size");
+
+static constexpr int8_t InstructionSizeInCodeUnitsByOpcode(Instruction::Code opcode,
+                                                           Instruction::Format format) {
+  if (opcode == Instruction::Code::NOP) {
+    return -1;
+  } else if ((format >= Instruction::Format::k10x) && (format <= Instruction::Format::k10t)) {
+    return 1;
+  } else if ((format >= Instruction::Format::k20t) && (format <= Instruction::Format::k22c)) {
+    return 2;
+  } else if ((format >= Instruction::Format::k32x) && (format <= Instruction::Format::k3rc)) {
+    return 3;
+  } else if ((format >= Instruction::Format::k45cc) && (format <= Instruction::Format::k4rcc)) {
+    return 4;
+  } else if (format == Instruction::Format::k51l) {
+    return 5;
+  } else {
+    return -1;
+  }
+}
+
+Instruction::InstructionDescriptor const Instruction::kInstructionDescriptors[] = {
+#define INSTRUCTION_DESCR(opcode, c, p, format, index, flags, eflags, vflags) \
+    { vflags, \
+      format, \
+      index, \
+      flags, \
+      InstructionSizeInCodeUnitsByOpcode((c), (format)), \
+    },
+#include "dex_instruction_list.h"
+  DEX_INSTRUCTION_LIST(INSTRUCTION_DESCR)
+#undef DEX_INSTRUCTION_LIST
+#undef INSTRUCTION_DESCR
+};
+
+int32_t Instruction::GetTargetOffset() const {
+  switch (FormatOf(Opcode())) {
+    // Cases for conditional branches follow.
+    case k22t: return VRegC_22t();
+    case k21t: return VRegB_21t();
+    // Cases for unconditional branches follow.
+    case k10t: return VRegA_10t();
+    case k20t: return VRegA_20t();
+    case k30t: return VRegA_30t();
+    default: LOG(FATAL) << "Tried to access the branch offset of an instruction " << Name() <<
+        " which does not have a target operand.";
+  }
+  return 0;
+}
+
+bool Instruction::CanFlowThrough() const {
+  const uint16_t* insns = reinterpret_cast<const uint16_t*>(this);
+  uint16_t insn = *insns;
+  Code opcode = static_cast<Code>(insn & 0xFF);
+  return  FlagsOf(opcode) & Instruction::kContinue;
+}
+
+size_t Instruction::SizeInCodeUnitsComplexOpcode() const {
+  const uint16_t* insns = reinterpret_cast<const uint16_t*>(this);
+  // Handle special NOP encoded variable length sequences.
+  switch (*insns) {
+    case kPackedSwitchSignature:
+      return (4 + insns[1] * 2);
+    case kSparseSwitchSignature:
+      return (2 + insns[1] * 4);
+    case kArrayDataSignature: {
+      uint16_t element_size = insns[1];
+      uint32_t length = insns[2] | (((uint32_t)insns[3]) << 16);
+      // The plus 1 is to round up for odd size and width.
+      return (4 + (element_size * length + 1) / 2);
+    }
+    default:
+      if ((*insns & 0xFF) == 0) {
+        return 1;  // NOP.
+      } else {
+        LOG(FATAL) << "Unreachable: " << DumpString(nullptr);
+        UNREACHABLE();
+      }
+  }
+}
+
+size_t Instruction::CodeUnitsRequiredForSizeOfComplexOpcode() const {
+  const uint16_t* insns = reinterpret_cast<const uint16_t*>(this);
+  // Handle special NOP encoded variable length sequences.
+  switch (*insns) {
+    case kPackedSwitchSignature:
+      FALLTHROUGH_INTENDED;
+    case kSparseSwitchSignature:
+      return 2;
+    case kArrayDataSignature:
+      return 4;
+    default:
+      if ((*insns & 0xFF) == 0) {
+        return 1;  // NOP.
+      } else {
+        LOG(FATAL) << "Unreachable: " << DumpString(nullptr);
+        UNREACHABLE();
+      }
+  }
+}
+
+std::string Instruction::DumpHex(size_t code_units) const {
+  size_t inst_length = SizeInCodeUnits();
+  if (inst_length > code_units) {
+    inst_length = code_units;
+  }
+  std::ostringstream os;
+  const uint16_t* insn = reinterpret_cast<const uint16_t*>(this);
+  for (size_t i = 0; i < inst_length; i++) {
+    os << StringPrintf("0x%04x", insn[i]) << " ";
+  }
+  for (size_t i = inst_length; i < code_units; i++) {
+    os << "       ";
+  }
+  return os.str();
+}
+
+std::string Instruction::DumpHexLE(size_t instr_code_units) const {
+  size_t inst_length = SizeInCodeUnits();
+  if (inst_length > instr_code_units) {
+    inst_length = instr_code_units;
+  }
+  std::ostringstream os;
+  const uint16_t* insn = reinterpret_cast<const uint16_t*>(this);
+  for (size_t i = 0; i < inst_length; i++) {
+    os << StringPrintf("%02x%02x", static_cast<uint8_t>(insn[i] & 0x00FF),
+                       static_cast<uint8_t>((insn[i] & 0xFF00) >> 8)) << " ";
+  }
+  for (size_t i = inst_length; i < instr_code_units; i++) {
+    os << "     ";
+  }
+  return os.str();
+}
+
+std::string Instruction::DumpString(const DexFile* file) const {
+  std::ostringstream os;
+  const char* opcode = kInstructionNames[Opcode()];
+  switch (FormatOf(Opcode())) {
+    case k10x:  os << opcode; break;
+    case k12x:  os << StringPrintf("%s v%d, v%d", opcode, VRegA_12x(), VRegB_12x()); break;
+    case k11n:  os << StringPrintf("%s v%d, #%+d", opcode, VRegA_11n(), VRegB_11n()); break;
+    case k11x:  os << StringPrintf("%s v%d", opcode, VRegA_11x()); break;
+    case k10t:  os << StringPrintf("%s %+d", opcode, VRegA_10t()); break;
+    case k20t:  os << StringPrintf("%s %+d", opcode, VRegA_20t()); break;
+    case k22x:  os << StringPrintf("%s v%d, v%d", opcode, VRegA_22x(), VRegB_22x()); break;
+    case k21t:  os << StringPrintf("%s v%d, %+d", opcode, VRegA_21t(), VRegB_21t()); break;
+    case k21s:  os << StringPrintf("%s v%d, #%+d", opcode, VRegA_21s(), VRegB_21s()); break;
+    case k21h: {
+        // op vAA, #+BBBB0000[00000000]
+        if (Opcode() == CONST_HIGH16) {
+          uint32_t value = VRegB_21h() << 16;
+          os << StringPrintf("%s v%d, #int %+d // 0x%x", opcode, VRegA_21h(), value, value);
+        } else {
+          uint64_t value = static_cast<uint64_t>(VRegB_21h()) << 48;
+          os << StringPrintf("%s v%d, #long %+" PRId64 " // 0x%" PRIx64, opcode, VRegA_21h(),
+                             value, value);
+        }
+      }
+      break;
+    case k21c: {
+      switch (Opcode()) {
+        case CONST_STRING:
+          if (file != nullptr) {
+            uint32_t string_idx = VRegB_21c();
+            if (string_idx < file->NumStringIds()) {
+              os << StringPrintf(
+                  "const-string v%d, %s // string@%d",
+                  VRegA_21c(),
+                  PrintableString(file->StringDataByIdx(dex::StringIndex(string_idx))).c_str(),
+                  string_idx);
+            } else {
+              os << StringPrintf("const-string v%d, <<invalid-string-idx-%d>> // string@%d",
+                                 VRegA_21c(),
+                                 string_idx,
+                                 string_idx);
+            }
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case CHECK_CAST:
+        case CONST_CLASS:
+        case NEW_INSTANCE:
+          if (file != nullptr) {
+            dex::TypeIndex type_idx(VRegB_21c());
+            os << opcode << " v" << static_cast<int>(VRegA_21c()) << ", "
+               << file->PrettyType(type_idx) << " // type@" << type_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case SGET:
+        case SGET_WIDE:
+        case SGET_OBJECT:
+        case SGET_BOOLEAN:
+        case SGET_BYTE:
+        case SGET_CHAR:
+        case SGET_SHORT:
+          if (file != nullptr) {
+            uint32_t field_idx = VRegB_21c();
+            os << opcode << "  v" << static_cast<int>(VRegA_21c()) << ", " << file->PrettyField(field_idx, true)
+               << " // field@" << field_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case SPUT:
+        case SPUT_WIDE:
+        case SPUT_OBJECT:
+        case SPUT_BOOLEAN:
+        case SPUT_BYTE:
+        case SPUT_CHAR:
+        case SPUT_SHORT:
+          if (file != nullptr) {
+            uint32_t field_idx = VRegB_21c();
+            os << opcode << " v" << static_cast<int>(VRegA_21c()) << ", " << file->PrettyField(field_idx, true)
+               << " // field@" << field_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        default:
+          os << StringPrintf("%s v%d, thing@%d", opcode, VRegA_21c(), VRegB_21c());
+          break;
+      }
+      break;
+    }
+    case k23x:  os << StringPrintf("%s v%d, v%d, v%d", opcode, VRegA_23x(), VRegB_23x(), VRegC_23x()); break;
+    case k22b:  os << StringPrintf("%s v%d, v%d, #%+d", opcode, VRegA_22b(), VRegB_22b(), VRegC_22b()); break;
+    case k22t:  os << StringPrintf("%s v%d, v%d, %+d", opcode, VRegA_22t(), VRegB_22t(), VRegC_22t()); break;
+    case k22s:  os << StringPrintf("%s v%d, v%d, #%+d", opcode, VRegA_22s(), VRegB_22s(), VRegC_22s()); break;
+    case k22c: {
+      switch (Opcode()) {
+        case IGET:
+        case IGET_WIDE:
+        case IGET_OBJECT:
+        case IGET_BOOLEAN:
+        case IGET_BYTE:
+        case IGET_CHAR:
+        case IGET_SHORT:
+          if (file != nullptr) {
+            uint32_t field_idx = VRegC_22c();
+            os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", "
+               << file->PrettyField(field_idx, true) << " // field@" << field_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case IGET_QUICK:
+        case IGET_OBJECT_QUICK:
+          if (file != nullptr) {
+            uint32_t field_idx = VRegC_22c();
+            os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", "
+               << "// offset@" << field_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case IPUT:
+        case IPUT_WIDE:
+        case IPUT_OBJECT:
+        case IPUT_BOOLEAN:
+        case IPUT_BYTE:
+        case IPUT_CHAR:
+        case IPUT_SHORT:
+          if (file != nullptr) {
+            uint32_t field_idx = VRegC_22c();
+            os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", "
+               << file->PrettyField(field_idx, true) << " // field@" << field_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case IPUT_QUICK:
+        case IPUT_OBJECT_QUICK:
+          if (file != nullptr) {
+            uint32_t field_idx = VRegC_22c();
+            os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v" << static_cast<int>(VRegB_22c()) << ", "
+               << "// offset@" << field_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case INSTANCE_OF:
+          if (file != nullptr) {
+            dex::TypeIndex type_idx(VRegC_22c());
+            os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v"
+               << static_cast<int>(VRegB_22c()) << ", " << file->PrettyType(type_idx)
+               << " // type@" << type_idx.index_;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case NEW_ARRAY:
+          if (file != nullptr) {
+            dex::TypeIndex type_idx(VRegC_22c());
+            os << opcode << " v" << static_cast<int>(VRegA_22c()) << ", v"
+               << static_cast<int>(VRegB_22c()) << ", " << file->PrettyType(type_idx)
+               << " // type@" << type_idx.index_;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        default:
+          os << StringPrintf("%s v%d, v%d, thing@%d", opcode, VRegA_22c(), VRegB_22c(), VRegC_22c());
+          break;
+      }
+      break;
+    }
+    case k32x:  os << StringPrintf("%s v%d, v%d", opcode, VRegA_32x(), VRegB_32x()); break;
+    case k30t:  os << StringPrintf("%s %+d", opcode, VRegA_30t()); break;
+    case k31t:  os << StringPrintf("%s v%d, %+d", opcode, VRegA_31t(), VRegB_31t()); break;
+    case k31i:  os << StringPrintf("%s v%d, #%+d", opcode, VRegA_31i(), VRegB_31i()); break;
+    case k31c:
+      if (Opcode() == CONST_STRING_JUMBO) {
+        uint32_t string_idx = VRegB_31c();
+        if (file != nullptr) {
+          if (string_idx < file->NumStringIds()) {
+            os << StringPrintf(
+                "%s v%d, %s // string@%d",
+                opcode,
+                VRegA_31c(),
+                PrintableString(file->StringDataByIdx(dex::StringIndex(string_idx))).c_str(),
+                string_idx);
+          } else {
+            os << StringPrintf("%s v%d, <<invalid-string-idx-%d>> // string@%d",
+                               opcode,
+                               VRegA_31c(),
+                               string_idx,
+                               string_idx);
+          }
+        } else {
+          os << StringPrintf("%s v%d, string@%d", opcode, VRegA_31c(), string_idx);
+        }
+      } else {
+        os << StringPrintf("%s v%d, thing@%d", opcode, VRegA_31c(), VRegB_31c()); break;
+      }
+      break;
+    case k35c: {
+      uint32_t arg[kMaxVarArgRegs];
+      GetVarArgs(arg);
+      auto DumpArgs = [&](size_t count) {
+        for (size_t i = 0; i < count; ++i) {
+          if (i != 0) {
+            os << ", ";
+          }
+          os << "v" << arg[i];
+        }
+      };
+      switch (Opcode()) {
+        case FILLED_NEW_ARRAY:
+        {
+          os << opcode << " {";
+          DumpArgs(VRegA_35c());
+          os << "}, type@" << VRegB_35c();
+        }
+        break;
+
+        case INVOKE_VIRTUAL:
+        case INVOKE_SUPER:
+        case INVOKE_DIRECT:
+        case INVOKE_STATIC:
+        case INVOKE_INTERFACE:
+          if (file != nullptr) {
+            os << opcode << " {";
+            uint32_t method_idx = VRegB_35c();
+            DumpArgs(VRegA_35c());
+            os << "}, " << file->PrettyMethod(method_idx) << " // method@" << method_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case INVOKE_VIRTUAL_QUICK:
+          if (file != nullptr) {
+            os << opcode << " {";
+            uint32_t method_idx = VRegB_35c();
+            DumpArgs(VRegA_35c());
+            os << "},  // vtable@" << method_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case INVOKE_CUSTOM:
+          if (file != nullptr) {
+            os << opcode << " {";
+            uint32_t call_site_idx = VRegB_35c();
+            DumpArgs(VRegA_35c());
+            os << "},  // call_site@" << call_site_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        default:
+          os << opcode << " {";
+          DumpArgs(VRegA_35c());
+          os << "}, thing@" << VRegB_35c();
+          break;
+      }
+      break;
+    }
+    case k3rc: {
+      uint16_t first_reg = VRegC_3rc();
+      uint16_t last_reg =  VRegC_3rc() + VRegA_3rc() - 1;
+      switch (Opcode()) {
+        case INVOKE_VIRTUAL_RANGE:
+        case INVOKE_SUPER_RANGE:
+        case INVOKE_DIRECT_RANGE:
+        case INVOKE_STATIC_RANGE:
+        case INVOKE_INTERFACE_RANGE:
+          if (file != nullptr) {
+            uint32_t method_idx = VRegB_3rc();
+            os << StringPrintf("%s, {v%d .. v%d}, ", opcode, first_reg, last_reg)
+               << file->PrettyMethod(method_idx) << " // method@" << method_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case INVOKE_VIRTUAL_RANGE_QUICK:
+          if (file != nullptr) {
+            uint32_t method_idx = VRegB_3rc();
+            os << StringPrintf("%s, {v%d .. v%d}, ", opcode, first_reg, last_reg)
+               << "// vtable@" << method_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        case INVOKE_CUSTOM_RANGE:
+          if (file != nullptr) {
+            uint32_t call_site_idx = VRegB_3rc();
+            os << StringPrintf("%s, {v%d .. v%d}, ", opcode, first_reg, last_reg)
+               << "// call_site@" << call_site_idx;
+            break;
+          }
+          FALLTHROUGH_INTENDED;
+        default:
+          os << StringPrintf("%s, {v%d .. v%d}, ", opcode, first_reg, last_reg)
+             << "thing@" << VRegB_3rc();
+          break;
+      }
+      break;
+    }
+    case k45cc: {
+      uint32_t arg[kMaxVarArgRegs];
+      GetVarArgs(arg);
+      uint32_t method_idx = VRegB_45cc();
+      uint32_t proto_idx = VRegH_45cc();
+      os << opcode << " {";
+      for (int i = 0; i < VRegA_45cc(); ++i) {
+        if (i != 0) {
+          os << ", ";
+        }
+        os << "v" << arg[i];
+      }
+      os << "}";
+      if (file != nullptr) {
+        os << ", " << file->PrettyMethod(method_idx) << ", " << file->GetShorty(proto_idx)
+           << " // ";
+      } else {
+        os << ", ";
+      }
+      os << "method@" << method_idx << ", proto@" << proto_idx;
+      break;
+    }
+    case k4rcc:
+      switch (Opcode()) {
+        case INVOKE_POLYMORPHIC_RANGE: {
+          if (file != nullptr) {
+            uint32_t method_idx = VRegB_4rcc();
+            uint32_t proto_idx = VRegH_4rcc();
+            os << opcode << ", {v" << VRegC_4rcc() << " .. v" << (VRegC_4rcc() + VRegA_4rcc())
+               << "}, " << file->PrettyMethod(method_idx) << ", " << file->GetShorty(proto_idx)
+               << " // method@" << method_idx << ", proto@" << proto_idx;
+            break;
+          }
+        }
+        FALLTHROUGH_INTENDED;
+        default: {
+          uint32_t method_idx = VRegB_4rcc();
+          uint32_t proto_idx = VRegH_4rcc();
+          os << opcode << ", {v" << VRegC_4rcc() << " .. v" << (VRegC_4rcc() + VRegA_4rcc())
+             << "}, method@" << method_idx << ", proto@" << proto_idx;
+        }
+      }
+      break;
+    case k51l: os << StringPrintf("%s v%d, #%+" PRId64, opcode, VRegA_51l(), VRegB_51l()); break;
+  }
+  return os.str();
+}
+
+// Add some checks that ensure the flags make sense. We need a subclass to be in the context of
+// Instruction. Otherwise the flags from the instruction list don't work.
+struct InstructionStaticAsserts : private Instruction {
+  #define IMPLIES(a, b) (!(a) || (b))
+
+  #define VAR_ARGS_CHECK(o, c, pname, f, i, a, e, v) \
+    static_assert(IMPLIES((f) == k35c || (f) == k45cc, \
+                          ((v) & (kVerifyVarArg | kVerifyVarArgNonZero)) != 0), \
+                  "Missing var-arg verification");
+  #include "dex_instruction_list.h"
+    DEX_INSTRUCTION_LIST(VAR_ARGS_CHECK)
+  #undef DEX_INSTRUCTION_LIST
+  #undef VAR_ARGS_CHECK
+
+  #define VAR_ARGS_RANGE_CHECK(o, c, pname, f, i, a, e, v) \
+    static_assert(IMPLIES((f) == k3rc || (f) == k4rcc, \
+                          ((v) & (kVerifyVarArgRange | kVerifyVarArgRangeNonZero)) != 0), \
+                  "Missing var-arg verification");
+  #include "dex_instruction_list.h"
+    DEX_INSTRUCTION_LIST(VAR_ARGS_RANGE_CHECK)
+  #undef DEX_INSTRUCTION_LIST
+  #undef VAR_ARGS_RANGE_CHECK
+
+  #define EXPERIMENTAL_CHECK(o, c, pname, f, i, a, e, v) \
+    static_assert(kHaveExperimentalInstructions || (((a) & kExperimental) == 0), \
+                  "Unexpected experimental instruction.");
+    #include "dex_instruction_list.h"
+  DEX_INSTRUCTION_LIST(EXPERIMENTAL_CHECK)
+  #undef DEX_INSTRUCTION_LIST
+  #undef EXPERIMENTAL_CHECK
+};
+
+std::ostream& operator<<(std::ostream& os, const Instruction::Code& code) {
+  return os << Instruction::Name(code);
+}
+//chensenhua add
+std::ostream &operator<<(std::ostream &os, const Instruction::Format &format){
+  return os << Instruction::Format (format);
+}
+
+std::ostream &operator<<(std::ostream &os, const Instruction::Flags &flags){
+  return os << Instruction::Flags (flags);
+}
+
+std::ostream &operator<<(std::ostream &os, const Instruction::VerifyFlag &vflags){
+  return os << Instruction::VerifyFlag(vflags);
+}
+//chensenhua add end
+
+uint32_t RangeInstructionOperands::GetOperand(size_t operand_index) const {
+  DCHECK_LT(operand_index, GetNumberOfOperands());
+  return first_operand_ + operand_index;
+}
+
+uint32_t VarArgsInstructionOperands::GetOperand(size_t operand_index) const {
+  DCHECK_LT(operand_index, GetNumberOfOperands());
+  return operands_[operand_index];
+}
+
+uint32_t NoReceiverInstructionOperands::GetOperand(size_t operand_index) const {
+  DCHECK_LT(GetNumberOfOperands(), inner_->GetNumberOfOperands());
+  // The receiver is the first operand and since we're skipping it, we need to
+  // add 1 to the operand_index.
+  return inner_->GetOperand(operand_index + 1);
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/dex_instruction.h

@@ -0,0 +1,757 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_H_
+#define ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_H_
+
+#include <android-base/logging.h>
+
+#include "base/globals.h"
+#include "base/macros.h"
+
+typedef uint8_t uint4_t;
+typedef int8_t int4_t;
+
+namespace art_lkchan {
+
+class DexFile;
+
+enum {
+  kNumPackedOpcodes = 0x100
+};
+
+class Instruction {
+ public:
+  // NOP-encoded switch-statement signatures.
+  enum Signatures {
+    kPackedSwitchSignature = 0x0100,
+    kSparseSwitchSignature = 0x0200,
+    kArrayDataSignature = 0x0300,
+  };
+
+  struct PACKED(4) PackedSwitchPayload {
+    const uint16_t ident;
+    const uint16_t case_count;
+    const int32_t first_key;
+    const int32_t targets[];
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(PackedSwitchPayload);
+  };
+
+  struct PACKED(4) SparseSwitchPayload {
+    const uint16_t ident;
+    const uint16_t case_count;
+    const int32_t keys_and_targets[];
+
+   public:
+    const int32_t* GetKeys() const {
+      return keys_and_targets;
+    }
+
+    const int32_t* GetTargets() const {
+      return keys_and_targets + case_count;
+    }
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(SparseSwitchPayload);
+  };
+
+  struct PACKED(4) ArrayDataPayload {
+    const uint16_t ident;
+    const uint16_t element_width;
+    const uint32_t element_count;
+    const uint8_t data[];
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(ArrayDataPayload);
+  };
+
+  enum Code {  // private marker to avoid generate-operator-out.py from processing.
+#define INSTRUCTION_ENUM(opcode, cname, p, f, i, a, e, v) cname = (opcode),
+#include "dex_instruction_list.h"
+    DEX_INSTRUCTION_LIST(INSTRUCTION_ENUM)
+#undef DEX_INSTRUCTION_LIST
+#undef INSTRUCTION_ENUM
+    RSUB_INT_LIT16 = RSUB_INT,
+  };
+
+  enum Format : uint8_t {
+    k10x,  // op
+    k12x,  // op vA, vB
+    k11n,  // op vA, #+B
+    k11x,  // op vAA
+    k10t,  // op +AA
+    k20t,  // op +AAAA
+    k22x,  // op vAA, vBBBB
+    k21t,  // op vAA, +BBBB
+    k21s,  // op vAA, #+BBBB
+    k21h,  // op vAA, #+BBBB00000[00000000]
+    k21c,  // op vAA, thing@BBBB
+    k23x,  // op vAA, vBB, vCC
+    k22b,  // op vAA, vBB, #+CC
+    k22t,  // op vA, vB, +CCCC
+    k22s,  // op vA, vB, #+CCCC
+    k22c,  // op vA, vB, thing@CCCC
+    k32x,  // op vAAAA, vBBBB
+    k30t,  // op +AAAAAAAA
+    k31t,  // op vAA, +BBBBBBBB
+    k31i,  // op vAA, #+BBBBBBBB
+    k31c,  // op vAA, thing@BBBBBBBB
+    k35c,  // op {vC, vD, vE, vF, vG}, thing@BBBB (B: count, A: vG)
+    k3rc,  // op {vCCCC .. v(CCCC+AA-1)}, meth@BBBB
+
+    // op {vC, vD, vE, vF, vG}, meth@BBBB, proto@HHHH (A: count)
+    // format: AG op BBBB FEDC HHHH
+    k45cc,
+
+    // op {VCCCC .. v(CCCC+AA-1)}, meth@BBBB, proto@HHHH (AA: count)
+    // format: AA op BBBB CCCC HHHH
+    k4rcc,  // op {VCCCC .. v(CCCC+AA-1)}, meth@BBBB, proto@HHHH (AA: count)
+
+    k51l,  // op vAA, #+BBBBBBBBBBBBBBBB
+  };
+
+  enum IndexType : uint8_t {
+    kIndexUnknown = 0,
+    kIndexNone,               // has no index
+    kIndexTypeRef,            // type reference index
+    kIndexStringRef,          // string reference index
+    kIndexMethodRef,          // method reference index
+    kIndexFieldRef,           // field reference index
+    kIndexFieldOffset,        // field offset (for static linked fields)
+    kIndexVtableOffset,       // vtable offset (for static linked methods)
+    kIndexMethodAndProtoRef,  // method and a proto reference index (for invoke-polymorphic)
+    kIndexCallSiteRef,        // call site reference index
+    kIndexMethodHandleRef,    // constant method handle reference index
+    kIndexProtoRef,           // prototype reference index
+  };
+
+  enum Flags : uint8_t {
+    kBranch              = 0x01,  // conditional or unconditional branch
+    kContinue            = 0x02,  // flow can continue to next statement
+    kSwitch              = 0x04,  // switch statement
+    kThrow               = 0x08,  // could cause an exception to be thrown
+    kReturn              = 0x10,  // returns, no additional statements
+    kInvoke              = 0x20,  // a flavor of invoke
+    kUnconditional       = 0x40,  // unconditional branch
+    kExperimental        = 0x80,  // is an experimental opcode
+  };
+
+  // Old flags. Keeping them around in case we might need them again some day.
+  enum ExtendedFlags : uint32_t {
+    kAdd                 = 0x0000080,  // addition
+    kSubtract            = 0x0000100,  // subtract
+    kMultiply            = 0x0000200,  // multiply
+    kDivide              = 0x0000400,  // division
+    kRemainder           = 0x0000800,  // remainder
+    kAnd                 = 0x0001000,  // and
+    kOr                  = 0x0002000,  // or
+    kXor                 = 0x0004000,  // xor
+    kShl                 = 0x0008000,  // shl
+    kShr                 = 0x0010000,  // shr
+    kUshr                = 0x0020000,  // ushr
+    kCast                = 0x0040000,  // cast
+    kStore               = 0x0080000,  // store opcode
+    kLoad                = 0x0100000,  // load opcode
+    kClobber             = 0x0200000,  // clobbers memory in a big way (not just a write)
+    kRegCFieldOrConstant = 0x0400000,  // is the third virtual register a field or literal constant (vC)
+    kRegBFieldOrConstant = 0x0800000,  // is the second virtual register a field or literal constant (vB)
+  };
+
+  enum VerifyFlag : uint32_t {
+    kVerifyNone               = 0x0000000,
+    kVerifyRegA               = 0x0000001,
+    kVerifyRegAWide           = 0x0000002,
+    kVerifyRegB               = 0x0000004,
+    kVerifyRegBField          = 0x0000008,
+    kVerifyRegBMethod         = 0x0000010,
+    kVerifyRegBNewInstance    = 0x0000020,
+    kVerifyRegBString         = 0x0000040,
+    kVerifyRegBType           = 0x0000080,
+    kVerifyRegBWide           = 0x0000100,
+    kVerifyRegC               = 0x0000200,
+    kVerifyRegCField          = 0x0000400,
+    kVerifyRegCNewArray       = 0x0000800,
+    kVerifyRegCType           = 0x0001000,
+    kVerifyRegCWide           = 0x0002000,
+    kVerifyArrayData          = 0x0004000,
+    kVerifyBranchTarget       = 0x0008000,
+    kVerifySwitchTargets      = 0x0010000,
+    kVerifyVarArg             = 0x0020000,
+    kVerifyVarArgNonZero      = 0x0040000,
+    kVerifyVarArgRange        = 0x0080000,
+    kVerifyVarArgRangeNonZero = 0x0100000,
+    kVerifyRuntimeOnly        = 0x0200000,
+    kVerifyError              = 0x0400000,
+    kVerifyRegHPrototype      = 0x0800000,
+    kVerifyRegBCallSite       = 0x1000000,
+    kVerifyRegBMethodHandle   = 0x2000000,
+    kVerifyRegBPrototype      = 0x4000000,
+  };
+
+  // Collect the enums in a struct for better locality.
+  struct InstructionDescriptor {
+    uint32_t verify_flags;         // Set of VerifyFlag.
+    Format format;
+    IndexType index_type;
+    uint8_t flags;                 // Set of Flags.
+    int8_t size_in_code_units;
+  };
+
+  static constexpr uint32_t kMaxVarArgRegs = 5;
+
+  static constexpr bool kHaveExperimentalInstructions = false;
+
+  // Returns the size (in 2 byte code units) of this instruction.
+  size_t SizeInCodeUnits() const {
+    int8_t result = kInstructionDescriptors[Opcode()].size_in_code_units;
+    if (UNLIKELY(result < 0)) {
+      return SizeInCodeUnitsComplexOpcode();
+    } else {
+      return static_cast<size_t>(result);
+    }
+  }
+
+  // Code units required to calculate the size of the instruction.
+  size_t CodeUnitsRequiredForSizeComputation() const {
+    const int8_t result = kInstructionDescriptors[Opcode()].size_in_code_units;
+    return UNLIKELY(result < 0) ? CodeUnitsRequiredForSizeOfComplexOpcode() : 1;
+  }
+
+  // Reads an instruction out of the stream at the specified address.
+  static const Instruction* At(const uint16_t* code) {
+    DCHECK(code != nullptr);
+    return reinterpret_cast<const Instruction*>(code);
+  }
+
+  // Reads an instruction out of the stream from the current address plus an offset.
+  const Instruction* RelativeAt(int32_t offset) const WARN_UNUSED {
+    return At(reinterpret_cast<const uint16_t*>(this) + offset);
+  }
+
+  // Returns a pointer to the next instruction in the stream.
+  const Instruction* Next() const {
+    return RelativeAt(SizeInCodeUnits());
+  }
+
+  // Returns a pointer to the instruction after this 1xx instruction in the stream.
+  const Instruction* Next_1xx() const {
+    DCHECK(FormatOf(Opcode()) >= k10x && FormatOf(Opcode()) <= k10t);
+    return RelativeAt(1);
+  }
+
+  // Returns a pointer to the instruction after this 2xx instruction in the stream.
+  const Instruction* Next_2xx() const {
+    DCHECK(FormatOf(Opcode()) >= k20t && FormatOf(Opcode()) <= k22c);
+    return RelativeAt(2);
+  }
+
+  // Returns a pointer to the instruction after this 3xx instruction in the stream.
+  const Instruction* Next_3xx() const {
+    DCHECK(FormatOf(Opcode()) >= k32x && FormatOf(Opcode()) <= k3rc);
+    return RelativeAt(3);
+  }
+
+  // Returns a pointer to the instruction after this 4xx instruction in the stream.
+  const Instruction* Next_4xx() const {
+    DCHECK(FormatOf(Opcode()) >= k45cc && FormatOf(Opcode()) <= k4rcc);
+    return RelativeAt(4);
+  }
+
+  // Returns a pointer to the instruction after this 51l instruction in the stream.
+  const Instruction* Next_51l() const {
+    DCHECK(FormatOf(Opcode()) == k51l);
+    return RelativeAt(5);
+  }
+
+  // Returns the name of this instruction's opcode.
+  const char* Name() const {
+    return Instruction::Name(Opcode());
+  }
+
+  // Returns the name of the given opcode.
+  static const char* Name(Code opcode) {
+    return kInstructionNames[opcode];
+  }
+
+  // VRegA
+  bool HasVRegA() const;
+  ALWAYS_INLINE int32_t VRegA() const;
+
+  int8_t VRegA_10t() const {
+    return VRegA_10t(Fetch16(0));
+  }
+  uint8_t VRegA_10x() const {
+    return VRegA_10x(Fetch16(0));
+  }
+  uint4_t VRegA_11n() const {
+    return VRegA_11n(Fetch16(0));
+  }
+  uint8_t VRegA_11x() const {
+    return VRegA_11x(Fetch16(0));
+  }
+  uint4_t VRegA_12x() const {
+    return VRegA_12x(Fetch16(0));
+  }
+  int16_t VRegA_20t() const;
+  uint8_t VRegA_21c() const {
+    return VRegA_21c(Fetch16(0));
+  }
+  uint8_t VRegA_21h() const {
+    return VRegA_21h(Fetch16(0));
+  }
+  uint8_t VRegA_21s() const {
+    return VRegA_21s(Fetch16(0));
+  }
+  uint8_t VRegA_21t() const {
+    return VRegA_21t(Fetch16(0));
+  }
+  uint8_t VRegA_22b() const {
+    return VRegA_22b(Fetch16(0));
+  }
+  uint4_t VRegA_22c() const {
+    return VRegA_22c(Fetch16(0));
+  }
+  uint4_t VRegA_22s() const {
+    return VRegA_22s(Fetch16(0));
+  }
+  uint4_t VRegA_22t() const {
+    return VRegA_22t(Fetch16(0));
+  }
+  uint8_t VRegA_22x() const {
+    return VRegA_22x(Fetch16(0));
+  }
+  uint8_t VRegA_23x() const {
+    return VRegA_23x(Fetch16(0));
+  }
+  int32_t VRegA_30t() const;
+  uint8_t VRegA_31c() const {
+    return VRegA_31c(Fetch16(0));
+  }
+  uint8_t VRegA_31i() const {
+    return VRegA_31i(Fetch16(0));
+  }
+  uint8_t VRegA_31t() const {
+    return VRegA_31t(Fetch16(0));
+  }
+  uint16_t VRegA_32x() const;
+  uint4_t VRegA_35c() const {
+    return VRegA_35c(Fetch16(0));
+  }
+  uint8_t VRegA_3rc() const {
+    return VRegA_3rc(Fetch16(0));
+  }
+  uint8_t VRegA_51l() const {
+    return VRegA_51l(Fetch16(0));
+  }
+  uint4_t VRegA_45cc() const {
+    return VRegA_45cc(Fetch16(0));
+  }
+  uint8_t VRegA_4rcc() const {
+    return VRegA_4rcc(Fetch16(0));
+  }
+
+  // The following methods return the vA operand for various instruction formats. The "inst_data"
+  // parameter holds the first 16 bits of instruction which the returned value is decoded from.
+  int8_t VRegA_10t(uint16_t inst_data) const;
+  uint8_t VRegA_10x(uint16_t inst_data) const;
+  uint4_t VRegA_11n(uint16_t inst_data) const;
+  uint8_t VRegA_11x(uint16_t inst_data) const;
+  uint4_t VRegA_12x(uint16_t inst_data) const;
+  uint8_t VRegA_21c(uint16_t inst_data) const;
+  uint8_t VRegA_21h(uint16_t inst_data) const;
+  uint8_t VRegA_21s(uint16_t inst_data) const;
+  uint8_t VRegA_21t(uint16_t inst_data) const;
+  uint8_t VRegA_22b(uint16_t inst_data) const;
+  uint4_t VRegA_22c(uint16_t inst_data) const;
+  uint4_t VRegA_22s(uint16_t inst_data) const;
+  uint4_t VRegA_22t(uint16_t inst_data) const;
+  uint8_t VRegA_22x(uint16_t inst_data) const;
+  uint8_t VRegA_23x(uint16_t inst_data) const;
+  uint8_t VRegA_31c(uint16_t inst_data) const;
+  uint8_t VRegA_31i(uint16_t inst_data) const;
+  uint8_t VRegA_31t(uint16_t inst_data) const;
+  uint4_t VRegA_35c(uint16_t inst_data) const;
+  uint8_t VRegA_3rc(uint16_t inst_data) const;
+  uint8_t VRegA_51l(uint16_t inst_data) const;
+  uint4_t VRegA_45cc(uint16_t inst_data) const;
+  uint8_t VRegA_4rcc(uint16_t inst_data) const;
+
+  // VRegB
+  bool HasVRegB() const;
+  int32_t VRegB() const;
+
+  bool HasWideVRegB() const;
+  uint64_t WideVRegB() const;
+
+  int4_t VRegB_11n() const {
+    return VRegB_11n(Fetch16(0));
+  }
+  uint4_t VRegB_12x() const {
+    return VRegB_12x(Fetch16(0));
+  }
+  uint16_t VRegB_21c() const;
+  uint16_t VRegB_21h() const;
+  int16_t VRegB_21s() const;
+  int16_t VRegB_21t() const;
+  uint8_t VRegB_22b() const;
+  uint4_t VRegB_22c() const {
+    return VRegB_22c(Fetch16(0));
+  }
+  uint4_t VRegB_22s() const {
+    return VRegB_22s(Fetch16(0));
+  }
+  uint4_t VRegB_22t() const {
+    return VRegB_22t(Fetch16(0));
+  }
+  uint16_t VRegB_22x() const;
+  uint8_t VRegB_23x() const;
+  uint32_t VRegB_31c() const;
+  int32_t VRegB_31i() const;
+  int32_t VRegB_31t() const;
+  uint16_t VRegB_32x() const;
+  uint16_t VRegB_35c() const;
+  uint16_t VRegB_3rc() const;
+  uint64_t VRegB_51l() const;  // vB_wide
+  uint16_t VRegB_45cc() const;
+  uint16_t VRegB_4rcc() const;
+
+  // The following methods return the vB operand for all instruction formats where it is encoded in
+  // the first 16 bits of instruction. The "inst_data" parameter holds these 16 bits. The returned
+  // value is decoded from it.
+  int4_t VRegB_11n(uint16_t inst_data) const;
+  uint4_t VRegB_12x(uint16_t inst_data) const;
+  uint4_t VRegB_22c(uint16_t inst_data) const;
+  uint4_t VRegB_22s(uint16_t inst_data) const;
+  uint4_t VRegB_22t(uint16_t inst_data) const;
+
+  // VRegC
+  bool HasVRegC() const;
+  int32_t VRegC() const;
+
+  int8_t VRegC_22b() const;
+  uint16_t VRegC_22c() const;
+  int16_t VRegC_22s() const;
+  int16_t VRegC_22t() const;
+  uint8_t VRegC_23x() const;
+  uint4_t VRegC_35c() const;
+  uint16_t VRegC_3rc() const;
+  uint4_t VRegC_45cc() const;
+  uint16_t VRegC_4rcc() const;
+
+
+  // VRegH
+  bool HasVRegH() const;
+  int32_t VRegH() const;
+  uint16_t VRegH_45cc() const;
+  uint16_t VRegH_4rcc() const;
+
+  // Fills the given array with the 'arg' array of the instruction.
+  bool HasVarArgs() const;
+  void GetVarArgs(uint32_t args[kMaxVarArgRegs], uint16_t inst_data) const;
+  void GetVarArgs(uint32_t args[kMaxVarArgRegs]) const {
+    return GetVarArgs(args, Fetch16(0));
+  }
+
+  // Returns the opcode field of the instruction. The given "inst_data" parameter must be the first
+  // 16 bits of instruction.
+  Code Opcode(uint16_t inst_data) const {
+    DCHECK_EQ(inst_data, Fetch16(0));
+    return static_cast<Code>(inst_data & 0xFF);
+  }
+
+  // Returns the opcode field of the instruction from the first 16 bits of instruction.
+  Code Opcode() const {
+    return Opcode(Fetch16(0));
+  }
+
+  void SetOpcode(Code opcode) {
+    DCHECK_LT(static_cast<uint16_t>(opcode), 256u);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[0] = (insns[0] & 0xff00) | static_cast<uint16_t>(opcode);
+  }
+
+  void SetVRegA_10x(uint8_t val) {
+    DCHECK(FormatOf(Opcode()) == k10x);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[0] = (val << 8) | (insns[0] & 0x00ff);
+  }
+
+  void SetVRegB_3rc(uint16_t val) {
+    DCHECK(FormatOf(Opcode()) == k3rc);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[1] = val;
+  }
+
+  void SetVRegB_35c(uint16_t val) {
+    DCHECK(FormatOf(Opcode()) == k35c);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[1] = val;
+  }
+
+  void SetVRegC_22c(uint16_t val) {
+    DCHECK(FormatOf(Opcode()) == k22c);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[1] = val;
+  }
+
+  void SetVRegA_21c(uint8_t val) {
+    DCHECK(FormatOf(Opcode()) == k21c);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[0] = (val << 8) | (insns[0] & 0x00ff);
+  }
+
+  void SetVRegB_21c(uint16_t val) {
+    DCHECK(FormatOf(Opcode()) == k21c);
+    uint16_t* insns = reinterpret_cast<uint16_t*>(this);
+    insns[1] = val;
+  }
+
+  // Returns the format of the given opcode.
+  static Format FormatOf(Code opcode) {
+    return kInstructionDescriptors[opcode].format;
+  }
+
+  // Returns the index type of the given opcode.
+  static IndexType IndexTypeOf(Code opcode) {
+    return kInstructionDescriptors[opcode].index_type;
+  }
+
+  // Returns the flags for the given opcode.
+  static uint8_t FlagsOf(Code opcode) {
+    return kInstructionDescriptors[opcode].flags;
+  }
+
+  // Return the verify flags for the given opcode.
+  static uint32_t VerifyFlagsOf(Code opcode) {
+    return kInstructionDescriptors[opcode].verify_flags;
+  }
+
+  // Returns true if this instruction is a branch.
+  bool IsBranch() const {
+    return (kInstructionDescriptors[Opcode()].flags & kBranch) != 0;
+  }
+
+  // Returns true if this instruction is a unconditional branch.
+  bool IsUnconditional() const {
+    return (kInstructionDescriptors[Opcode()].flags & kUnconditional) != 0;
+  }
+
+  // Returns the branch offset if this instruction is a branch.
+  int32_t GetTargetOffset() const;
+
+  // Returns true if the instruction allows control flow to go to the following instruction.
+  bool CanFlowThrough() const;
+
+  // Returns true if the instruction is a quickened instruction.
+  bool IsQuickened() const {
+    return (kInstructionDescriptors[Opcode()].index_type == kIndexFieldOffset) ||
+        (kInstructionDescriptors[Opcode()].index_type == kIndexVtableOffset);
+  }
+
+  // Returns true if this instruction is a switch.
+  bool IsSwitch() const {
+    return (kInstructionDescriptors[Opcode()].flags & kSwitch) != 0;
+  }
+
+  // Returns true if this instruction can throw.
+  bool IsThrow() const {
+    return (kInstructionDescriptors[Opcode()].flags & kThrow) != 0;
+  }
+
+  // Determine if the instruction is any of 'return' instructions.
+  bool IsReturn() const {
+    return (kInstructionDescriptors[Opcode()].flags & kReturn) != 0;
+  }
+
+  // Determine if this instruction ends execution of its basic block.
+  bool IsBasicBlockEnd() const {
+    return IsBranch() || IsReturn() || Opcode() == THROW;
+  }
+
+  // Determine if this instruction is an invoke.
+  bool IsInvoke() const {
+    return (kInstructionDescriptors[Opcode()].flags & kInvoke) != 0;
+  }
+
+  // Determine if this instruction is experimental.
+  bool IsExperimental() const {
+    return (kInstructionDescriptors[Opcode()].flags & kExperimental) != 0;
+  }
+
+  int GetVerifyTypeArgumentA() const {
+    return (kInstructionDescriptors[Opcode()].verify_flags & (kVerifyRegA | kVerifyRegAWide));
+  }
+
+  int GetVerifyTypeArgumentB() const {
+    return (kInstructionDescriptors[Opcode()].verify_flags & (kVerifyRegB | kVerifyRegBField |
+        kVerifyRegBMethod | kVerifyRegBNewInstance | kVerifyRegBString | kVerifyRegBType |
+        kVerifyRegBWide));
+  }
+
+  int GetVerifyTypeArgumentC() const {
+    return (kInstructionDescriptors[Opcode()].verify_flags & (kVerifyRegC | kVerifyRegCField |
+        kVerifyRegCNewArray | kVerifyRegCType | kVerifyRegCWide));
+  }
+
+  int GetVerifyTypeArgumentH() const {
+    return (kInstructionDescriptors[Opcode()].verify_flags & kVerifyRegHPrototype);
+  }
+
+  int GetVerifyExtraFlags() const {
+    return (kInstructionDescriptors[Opcode()].verify_flags & (kVerifyArrayData |
+        kVerifyBranchTarget | kVerifySwitchTargets | kVerifyVarArg | kVerifyVarArgNonZero |
+        kVerifyVarArgRange | kVerifyVarArgRangeNonZero | kVerifyError));
+  }
+
+  bool GetVerifyIsRuntimeOnly() const {
+    return (kInstructionDescriptors[Opcode()].verify_flags & kVerifyRuntimeOnly) != 0;
+  }
+
+  // Get the dex PC of this instruction as a offset in code units from the beginning of insns.
+  uint32_t GetDexPc(const uint16_t* insns) const {
+    return (reinterpret_cast<const uint16_t*>(this) - insns);
+  }
+
+  // Dump decoded version of instruction
+  std::string DumpString(const DexFile*) const;
+
+  // Dump code_units worth of this instruction, padding to code_units for shorter instructions
+  std::string DumpHex(size_t code_units) const;
+
+  // Little-endian dump code_units worth of this instruction, padding to code_units for
+  // shorter instructions
+  std::string DumpHexLE(size_t instr_code_units) const;
+
+  uint16_t Fetch16(size_t offset) const {
+    const uint16_t* insns = reinterpret_cast<const uint16_t*>(this);
+    return insns[offset];
+  }
+
+ private:
+  size_t SizeInCodeUnitsComplexOpcode() const;
+
+  // Return how many code unit words are required to compute the size of the opcode.
+  size_t CodeUnitsRequiredForSizeOfComplexOpcode() const;
+
+  uint32_t Fetch32(size_t offset) const {
+    return (Fetch16(offset) | ((uint32_t) Fetch16(offset + 1) << 16));
+  }
+
+  uint4_t InstA() const {
+    return InstA(Fetch16(0));
+  }
+
+  uint4_t InstB() const {
+    return InstB(Fetch16(0));
+  }
+
+  uint8_t InstAA() const {
+    return InstAA(Fetch16(0));
+  }
+
+  uint4_t InstA(uint16_t inst_data) const {
+    DCHECK_EQ(inst_data, Fetch16(0));
+    return static_cast<uint4_t>((inst_data >> 8) & 0x0f);
+  }
+
+  uint4_t InstB(uint16_t inst_data) const {
+    DCHECK_EQ(inst_data, Fetch16(0));
+    return static_cast<uint4_t>(inst_data >> 12);
+  }
+
+  uint8_t InstAA(uint16_t inst_data) const {
+    DCHECK_EQ(inst_data, Fetch16(0));
+    return static_cast<uint8_t>(inst_data >> 8);
+  }
+
+  static const char* const kInstructionNames[];
+
+  static const InstructionDescriptor kInstructionDescriptors[];
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Instruction);
+};
+std::ostream& operator<<(std::ostream& os, const Instruction::Code& code);
+std::ostream& operator<<(std::ostream& os, const Instruction::Format& format);
+std::ostream& operator<<(std::ostream& os, const Instruction::Flags& flags);
+std::ostream& operator<<(std::ostream& os, const Instruction::VerifyFlag& vflags);
+
+// Base class for accessing instruction operands. Unifies operand
+// access for instructions that have range and varargs forms
+// (e.g. invoke-polymoprhic/range and invoke-polymorphic).
+class InstructionOperands {
+ public:
+  explicit InstructionOperands(size_t num_operands) : num_operands_(num_operands) {}
+  virtual ~InstructionOperands() {}
+  virtual uint32_t GetOperand(size_t index) const = 0;
+  size_t GetNumberOfOperands() const { return num_operands_; }
+
+ private:
+  const size_t num_operands_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(InstructionOperands);
+};
+
+// Class for accessing operands for instructions with a range format
+// (e.g. 3rc and 4rcc).
+class RangeInstructionOperands FINAL : public InstructionOperands {
+ public:
+  RangeInstructionOperands(uint32_t first_operand, size_t num_operands)
+      : InstructionOperands(num_operands), first_operand_(first_operand) {}
+  ~RangeInstructionOperands() {}
+  uint32_t GetOperand(size_t operand_index) const OVERRIDE;
+
+ private:
+  const uint32_t first_operand_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(RangeInstructionOperands);
+};
+
+// Class for accessing operands for instructions with a variable
+// number of arguments format (e.g. 35c and 45cc).
+class VarArgsInstructionOperands FINAL : public InstructionOperands {
+ public:
+  VarArgsInstructionOperands(const uint32_t (&operands)[Instruction::kMaxVarArgRegs],
+                             size_t num_operands)
+      : InstructionOperands(num_operands), operands_(operands) {}
+  ~VarArgsInstructionOperands() {}
+  uint32_t GetOperand(size_t operand_index) const OVERRIDE;
+
+ private:
+  const uint32_t (&operands_)[Instruction::kMaxVarArgRegs];
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(VarArgsInstructionOperands);
+};
+
+// Class for accessing operands without the receiver by wrapping an
+// existing InstructionOperands instance.
+class NoReceiverInstructionOperands FINAL : public InstructionOperands {
+ public:
+  explicit NoReceiverInstructionOperands(const InstructionOperands* const inner)
+      : InstructionOperands(inner->GetNumberOfOperands() - 1), inner_(inner) {}
+  ~NoReceiverInstructionOperands() {}
+  uint32_t GetOperand(size_t operand_index) const OVERRIDE;
+
+ private:
+  const InstructionOperands* const inner_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(NoReceiverInstructionOperands);
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_H_

Bcore/src/main/cpp/dex/dex_instruction_iterator.h

@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_ITERATOR_H_
+#define ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_ITERATOR_H_
+
+#include <iterator>
+
+#include <android-base/logging.h>
+
+#include "base/macros.h"
+#include "dex_instruction.h"
+
+namespace art_lkchan {
+
+class DexInstructionPcPair {
+ public:
+  ALWAYS_INLINE const Instruction& Inst() const {
+    return *Instruction::At(instructions_ + DexPc());
+  }
+
+  ALWAYS_INLINE const Instruction* operator->() const {
+    return &Inst();
+  }
+
+  ALWAYS_INLINE uint32_t DexPc() const {
+    return dex_pc_;
+  }
+
+  ALWAYS_INLINE const uint16_t* Instructions() const {
+    return instructions_;
+  }
+
+ protected:
+  explicit DexInstructionPcPair(const uint16_t* instructions, uint32_t dex_pc)
+      : instructions_(instructions), dex_pc_(dex_pc) {}
+
+  const uint16_t* instructions_ = nullptr;
+  uint32_t dex_pc_ = 0;
+
+  friend class DexInstructionIteratorBase;
+  friend class DexInstructionIterator;
+  friend class SafeDexInstructionIterator;
+};
+
+// Base helper class to prevent duplicated comparators.
+class DexInstructionIteratorBase : public
+        std::iterator<std::forward_iterator_tag, DexInstructionPcPair> {
+ public:
+  using value_type = std::iterator<std::forward_iterator_tag, DexInstructionPcPair>::value_type;
+  using difference_type = std::iterator<std::forward_iterator_tag, value_type>::difference_type;
+
+  DexInstructionIteratorBase() = default;
+  explicit DexInstructionIteratorBase(const Instruction* inst, uint32_t dex_pc)
+      : data_(reinterpret_cast<const uint16_t*>(inst), dex_pc) {}
+
+  const Instruction& Inst() const {
+    return data_.Inst();
+  }
+
+  // Return the dex pc for an iterator compared to the code item begin.
+  ALWAYS_INLINE uint32_t DexPc() const {
+    return data_.DexPc();
+  }
+
+  // Instructions from the start of the code item.
+  ALWAYS_INLINE const uint16_t* Instructions() const {
+    return data_.Instructions();
+  }
+
+ protected:
+  DexInstructionPcPair data_;
+};
+
+static ALWAYS_INLINE inline bool operator==(const DexInstructionIteratorBase& lhs,
+                                            const DexInstructionIteratorBase& rhs) {
+  DCHECK_EQ(lhs.Instructions(), rhs.Instructions()) << "Comparing different code items.";
+  return lhs.DexPc() == rhs.DexPc();
+}
+
+static inline bool operator!=(const DexInstructionIteratorBase& lhs,
+                              const DexInstructionIteratorBase& rhs) {
+  return !(lhs == rhs);
+}
+
+static inline bool operator<(const DexInstructionIteratorBase& lhs,
+                             const DexInstructionIteratorBase& rhs) {
+  DCHECK_EQ(lhs.Instructions(), rhs.Instructions()) << "Comparing different code items.";
+  return lhs.DexPc() < rhs.DexPc();
+}
+
+static inline bool operator>(const DexInstructionIteratorBase& lhs,
+                             const DexInstructionIteratorBase& rhs) {
+  return rhs < lhs;
+}
+
+static inline bool operator<=(const DexInstructionIteratorBase& lhs,
+                              const DexInstructionIteratorBase& rhs) {
+  return !(rhs < lhs);
+}
+
+static inline bool operator>=(const DexInstructionIteratorBase& lhs,
+                              const DexInstructionIteratorBase& rhs) {
+  return !(lhs < rhs);
+}
+
+// A helper class for a code_item's instructions using range based for loop syntax.
+class DexInstructionIterator : public DexInstructionIteratorBase {
+ public:
+  using DexInstructionIteratorBase::DexInstructionIteratorBase;
+
+  explicit DexInstructionIterator(const uint16_t* inst, uint32_t dex_pc)
+      : DexInstructionIteratorBase(Instruction::At(inst), dex_pc) {}
+
+  explicit DexInstructionIterator(const DexInstructionPcPair& pair)
+      : DexInstructionIterator(pair.Instructions(), pair.DexPc()) {}
+
+  // Value after modification.
+  DexInstructionIterator& operator++() {
+    data_.dex_pc_ += Inst().SizeInCodeUnits();
+    return *this;
+  }
+
+  // Value before modification.
+  DexInstructionIterator operator++(int) {
+    DexInstructionIterator temp = *this;
+    ++*this;
+    return temp;
+  }
+
+  const value_type& operator*() const {
+    return data_;
+  }
+
+  const Instruction* operator->() const {
+    return &data_.Inst();
+  }
+
+  // Return the dex pc for the iterator.
+  ALWAYS_INLINE uint32_t DexPc() const {
+    return data_.DexPc();
+  }
+};
+
+// A safe version of DexInstructionIterator that is guaranteed to not go past the end of the code
+// item.
+class SafeDexInstructionIterator : public DexInstructionIteratorBase {
+ public:
+  explicit SafeDexInstructionIterator(const DexInstructionIteratorBase& start,
+                                      const DexInstructionIteratorBase& end)
+      : DexInstructionIteratorBase(&start.Inst(), start.DexPc())
+      , num_code_units_(end.DexPc()) {
+    DCHECK_EQ(start.Instructions(), end.Instructions())
+        << "start and end must be in the same code item.";
+  }
+
+  // Value after modification, does not read past the end of the allowed region. May increment past
+  // the end of the code item though.
+  SafeDexInstructionIterator& operator++() {
+    AssertValid();
+    const size_t size_code_units = Inst().CodeUnitsRequiredForSizeComputation();
+    const size_t available = NumCodeUnits() - DexPc();
+    if (UNLIKELY(size_code_units > available)) {
+      error_state_ = true;
+      return *this;
+    }
+    const size_t instruction_code_units = Inst().SizeInCodeUnits();
+    if (UNLIKELY(instruction_code_units > available)) {
+      error_state_ = true;
+      return *this;
+    }
+    data_.dex_pc_ += instruction_code_units;
+    return *this;
+  }
+
+  // Value before modification.
+  SafeDexInstructionIterator operator++(int) {
+    SafeDexInstructionIterator temp = *this;
+    ++*this;
+    return temp;
+  }
+
+  const value_type& operator*() const {
+    AssertValid();
+    return data_;
+  }
+
+  const Instruction* operator->() const {
+    AssertValid();
+    return &data_.Inst();
+  }
+
+  // Return the current instruction of the iterator.
+  ALWAYS_INLINE const Instruction& Inst() const {
+    return data_.Inst();
+  }
+
+  const uint16_t* Instructions() const {
+    return data_.Instructions();
+  }
+
+  // Returns true if the iterator is in an error state. This occurs when an instruction couldn't
+  // have its size computed without reading past the end iterator.
+  bool IsErrorState() const {
+    return error_state_;
+  }
+
+ private:
+  ALWAYS_INLINE void AssertValid() const {
+    DCHECK(!IsErrorState());
+    DCHECK_LT(DexPc(), NumCodeUnits());
+  }
+
+  ALWAYS_INLINE uint32_t NumCodeUnits() const {
+    return num_code_units_;
+  }
+
+  const uint32_t num_code_units_ = 0;
+  bool error_state_ = false;
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_ITERATOR_H_

Bcore/src/main/cpp/dex/dex_instruction_list.h

@@ -0,0 +1,308 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_LIST_H_
+#define ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_LIST_H_
+
+// V(opcode, instruction_code, name, format, index, flags, extended_flags, verifier_flags);
+#define DEX_INSTRUCTION_LIST(V) \
+  V(0x00, NOP, "nop", k10x, kIndexNone, kContinue, 0, kVerifyNone) \
+  V(0x01, MOVE, "move", k12x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x02, MOVE_FROM16, "move/from16", k22x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x03, MOVE_16, "move/16", k32x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x04, MOVE_WIDE, "move-wide", k12x, kIndexNone, kContinue, 0, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x05, MOVE_WIDE_FROM16, "move-wide/from16", k22x, kIndexNone, kContinue, 0, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x06, MOVE_WIDE_16, "move-wide/16", k32x, kIndexNone, kContinue, 0, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x07, MOVE_OBJECT, "move-object", k12x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x08, MOVE_OBJECT_FROM16, "move-object/from16", k22x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x09, MOVE_OBJECT_16, "move-object/16", k32x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x0A, MOVE_RESULT, "move-result", k11x, kIndexNone, kContinue, 0, kVerifyRegA) \
+  V(0x0B, MOVE_RESULT_WIDE, "move-result-wide", k11x, kIndexNone, kContinue, 0, kVerifyRegAWide) \
+  V(0x0C, MOVE_RESULT_OBJECT, "move-result-object", k11x, kIndexNone, kContinue, 0, kVerifyRegA) \
+  V(0x0D, MOVE_EXCEPTION, "move-exception", k11x, kIndexNone, kContinue, 0, kVerifyRegA) \
+  V(0x0E, RETURN_VOID, "return-void", k10x, kIndexNone, kReturn, 0, kVerifyNone) \
+  V(0x0F, RETURN, "return", k11x, kIndexNone, kReturn, 0, kVerifyRegA) \
+  V(0x10, RETURN_WIDE, "return-wide", k11x, kIndexNone, kReturn, 0, kVerifyRegAWide) \
+  V(0x11, RETURN_OBJECT, "return-object", k11x, kIndexNone, kReturn, 0, kVerifyRegA) \
+  V(0x12, CONST_4, "const/4", k11n, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegA) \
+  V(0x13, CONST_16, "const/16", k21s, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegA) \
+  V(0x14, CONST, "const", k31i, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegA) \
+  V(0x15, CONST_HIGH16, "const/high16", k21h, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegA) \
+  V(0x16, CONST_WIDE_16, "const-wide/16", k21s, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegAWide) \
+  V(0x17, CONST_WIDE_32, "const-wide/32", k31i, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegAWide) \
+  V(0x18, CONST_WIDE, "const-wide", k51l, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegAWide) \
+  V(0x19, CONST_WIDE_HIGH16, "const-wide/high16", k21h, kIndexNone, kContinue, kRegBFieldOrConstant, kVerifyRegAWide) \
+  V(0x1A, CONST_STRING, "const-string", k21c, kIndexStringRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegBString) \
+  V(0x1B, CONST_STRING_JUMBO, "const-string/jumbo", k31c, kIndexStringRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegBString) \
+  V(0x1C, CONST_CLASS, "const-class", k21c, kIndexTypeRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegBType) \
+  V(0x1D, MONITOR_ENTER, "monitor-enter", k11x, kIndexNone, kContinue | kThrow, kClobber, kVerifyRegA) \
+  V(0x1E, MONITOR_EXIT, "monitor-exit", k11x, kIndexNone, kContinue | kThrow, kClobber, kVerifyRegA) \
+  V(0x1F, CHECK_CAST, "check-cast", k21c, kIndexTypeRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegBType) \
+  V(0x20, INSTANCE_OF, "instance-of", k22c, kIndexTypeRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegB | kVerifyRegCType) \
+  V(0x21, ARRAY_LENGTH, "array-length", k12x, kIndexNone, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x22, NEW_INSTANCE, "new-instance", k21c, kIndexTypeRef, kContinue | kThrow, kClobber, kVerifyRegA | kVerifyRegBNewInstance) \
+  V(0x23, NEW_ARRAY, "new-array", k22c, kIndexTypeRef, kContinue | kThrow, kClobber, kVerifyRegA | kVerifyRegB | kVerifyRegCNewArray) \
+  V(0x24, FILLED_NEW_ARRAY, "filled-new-array", k35c, kIndexTypeRef, kContinue | kThrow, kClobber, kVerifyRegBType | kVerifyVarArg) \
+  V(0x25, FILLED_NEW_ARRAY_RANGE, "filled-new-array/range", k3rc, kIndexTypeRef, kContinue | kThrow, kClobber, kVerifyRegBType | kVerifyVarArgRange) \
+  V(0x26, FILL_ARRAY_DATA, "fill-array-data", k31t, kIndexNone, kContinue | kThrow, kClobber, kVerifyRegA | kVerifyArrayData) \
+  V(0x27, THROW, "throw", k11x, kIndexNone, kThrow, 0, kVerifyRegA) \
+  V(0x28, GOTO, "goto", k10t, kIndexNone, kBranch | kUnconditional, 0, kVerifyBranchTarget) \
+  V(0x29, GOTO_16, "goto/16", k20t, kIndexNone, kBranch | kUnconditional, 0, kVerifyBranchTarget) \
+  V(0x2A, GOTO_32, "goto/32", k30t, kIndexNone, kBranch | kUnconditional, 0, kVerifyBranchTarget) \
+  V(0x2B, PACKED_SWITCH, "packed-switch", k31t, kIndexNone, kContinue | kSwitch, 0, kVerifyRegA | kVerifySwitchTargets) \
+  V(0x2C, SPARSE_SWITCH, "sparse-switch", k31t, kIndexNone, kContinue | kSwitch, 0, kVerifyRegA | kVerifySwitchTargets) \
+  V(0x2D, CMPL_FLOAT, "cmpl-float", k23x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x2E, CMPG_FLOAT, "cmpg-float", k23x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x2F, CMPL_DOUBLE, "cmpl-double", k23x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x30, CMPG_DOUBLE, "cmpg-double", k23x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x31, CMP_LONG, "cmp-long", k23x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x32, IF_EQ, "if-eq", k22t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyRegB | kVerifyBranchTarget) \
+  V(0x33, IF_NE, "if-ne", k22t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyRegB | kVerifyBranchTarget) \
+  V(0x34, IF_LT, "if-lt", k22t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyRegB | kVerifyBranchTarget) \
+  V(0x35, IF_GE, "if-ge", k22t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyRegB | kVerifyBranchTarget) \
+  V(0x36, IF_GT, "if-gt", k22t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyRegB | kVerifyBranchTarget) \
+  V(0x37, IF_LE, "if-le", k22t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyRegB | kVerifyBranchTarget) \
+  V(0x38, IF_EQZ, "if-eqz", k21t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyBranchTarget) \
+  V(0x39, IF_NEZ, "if-nez", k21t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyBranchTarget) \
+  V(0x3A, IF_LTZ, "if-ltz", k21t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyBranchTarget) \
+  V(0x3B, IF_GEZ, "if-gez", k21t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyBranchTarget) \
+  V(0x3C, IF_GTZ, "if-gtz", k21t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyBranchTarget) \
+  V(0x3D, IF_LEZ, "if-lez", k21t, kIndexNone, kContinue | kBranch, 0, kVerifyRegA | kVerifyBranchTarget) \
+  V(0x3E, UNUSED_3E, "unused-3e", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x3F, UNUSED_3F, "unused-3f", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x40, UNUSED_40, "unused-40", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x41, UNUSED_41, "unused-41", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x42, UNUSED_42, "unused-42", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x43, UNUSED_43, "unused-43", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x44, AGET, "aget", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x45, AGET_WIDE, "aget-wide", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegAWide | kVerifyRegB | kVerifyRegC) \
+  V(0x46, AGET_OBJECT, "aget-object", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x47, AGET_BOOLEAN, "aget-boolean", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x48, AGET_BYTE, "aget-byte", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x49, AGET_CHAR, "aget-char", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x4A, AGET_SHORT, "aget-short", k23x, kIndexNone, kContinue | kThrow, kLoad, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x4B, APUT, "aput", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x4C, APUT_WIDE, "aput-wide", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegAWide | kVerifyRegB | kVerifyRegC) \
+  V(0x4D, APUT_OBJECT, "aput-object", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x4E, APUT_BOOLEAN, "aput-boolean", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x4F, APUT_BYTE, "aput-byte", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x50, APUT_CHAR, "aput-char", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x51, APUT_SHORT, "aput-short", k23x, kIndexNone, kContinue | kThrow, kStore, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x52, IGET, "iget", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x53, IGET_WIDE, "iget-wide", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegAWide | kVerifyRegB | kVerifyRegCField) \
+  V(0x54, IGET_OBJECT, "iget-object", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x55, IGET_BOOLEAN, "iget-boolean", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x56, IGET_BYTE, "iget-byte", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x57, IGET_CHAR, "iget-char", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x58, IGET_SHORT, "iget-short", k22c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x59, IPUT, "iput", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x5A, IPUT_WIDE, "iput-wide", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegAWide | kVerifyRegB | kVerifyRegCField) \
+  V(0x5B, IPUT_OBJECT, "iput-object", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x5C, IPUT_BOOLEAN, "iput-boolean", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x5D, IPUT_BYTE, "iput-byte", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x5E, IPUT_CHAR, "iput-char", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x5F, IPUT_SHORT, "iput-short", k22c, kIndexFieldRef, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRegCField) \
+  V(0x60, SGET, "sget", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x61, SGET_WIDE, "sget-wide", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegAWide | kVerifyRegBField) \
+  V(0x62, SGET_OBJECT, "sget-object", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x63, SGET_BOOLEAN, "sget-boolean", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x64, SGET_BYTE, "sget-byte", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x65, SGET_CHAR, "sget-char", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x66, SGET_SHORT, "sget-short", k21c, kIndexFieldRef, kContinue | kThrow, kLoad | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x67, SPUT, "sput", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x68, SPUT_WIDE, "sput-wide", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegAWide | kVerifyRegBField) \
+  V(0x69, SPUT_OBJECT, "sput-object", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x6A, SPUT_BOOLEAN, "sput-boolean", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x6B, SPUT_BYTE, "sput-byte", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x6C, SPUT_CHAR, "sput-char", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x6D, SPUT_SHORT, "sput-short", k21c, kIndexFieldRef, kContinue | kThrow, kStore | kRegBFieldOrConstant, kVerifyRegA | kVerifyRegBField) \
+  V(0x6E, INVOKE_VIRTUAL, "invoke-virtual", k35c, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgNonZero) \
+  V(0x6F, INVOKE_SUPER, "invoke-super", k35c, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgNonZero) \
+  V(0x70, INVOKE_DIRECT, "invoke-direct", k35c, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgNonZero) \
+  V(0x71, INVOKE_STATIC, "invoke-static", k35c, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArg) \
+  V(0x72, INVOKE_INTERFACE, "invoke-interface", k35c, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgNonZero) \
+  V(0x73, RETURN_VOID_NO_BARRIER, "return-void-no-barrier", k10x, kIndexNone, kReturn, 0, kVerifyNone) \
+  V(0x74, INVOKE_VIRTUAL_RANGE, "invoke-virtual/range", k3rc, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgRangeNonZero) \
+  V(0x75, INVOKE_SUPER_RANGE, "invoke-super/range", k3rc, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgRangeNonZero) \
+  V(0x76, INVOKE_DIRECT_RANGE, "invoke-direct/range", k3rc, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgRangeNonZero) \
+  V(0x77, INVOKE_STATIC_RANGE, "invoke-static/range", k3rc, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgRange) \
+  V(0x78, INVOKE_INTERFACE_RANGE, "invoke-interface/range", k3rc, kIndexMethodRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgRangeNonZero) \
+  V(0x79, UNUSED_79, "unused-79", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x7A, UNUSED_7A, "unused-7a", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0x7B, NEG_INT, "neg-int", k12x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x7C, NOT_INT, "not-int", k12x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x7D, NEG_LONG, "neg-long", k12x, kIndexNone, kContinue, 0, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x7E, NOT_LONG, "not-long", k12x, kIndexNone, kContinue, 0, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x7F, NEG_FLOAT, "neg-float", k12x, kIndexNone, kContinue, 0, kVerifyRegA | kVerifyRegB) \
+  V(0x80, NEG_DOUBLE, "neg-double", k12x, kIndexNone, kContinue, 0, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x81, INT_TO_LONG, "int-to-long", k12x, kIndexNone, kContinue, kCast, kVerifyRegAWide | kVerifyRegB) \
+  V(0x82, INT_TO_FLOAT, "int-to-float", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegB) \
+  V(0x83, INT_TO_DOUBLE, "int-to-double", k12x, kIndexNone, kContinue, kCast, kVerifyRegAWide | kVerifyRegB) \
+  V(0x84, LONG_TO_INT, "long-to-int", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegBWide) \
+  V(0x85, LONG_TO_FLOAT, "long-to-float", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegBWide) \
+  V(0x86, LONG_TO_DOUBLE, "long-to-double", k12x, kIndexNone, kContinue, kCast, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x87, FLOAT_TO_INT, "float-to-int", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegB) \
+  V(0x88, FLOAT_TO_LONG, "float-to-long", k12x, kIndexNone, kContinue, kCast, kVerifyRegAWide | kVerifyRegB) \
+  V(0x89, FLOAT_TO_DOUBLE, "float-to-double", k12x, kIndexNone, kContinue, kCast, kVerifyRegAWide | kVerifyRegB) \
+  V(0x8A, DOUBLE_TO_INT, "double-to-int", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegBWide) \
+  V(0x8B, DOUBLE_TO_LONG, "double-to-long", k12x, kIndexNone, kContinue, kCast, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0x8C, DOUBLE_TO_FLOAT, "double-to-float", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegBWide) \
+  V(0x8D, INT_TO_BYTE, "int-to-byte", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegB) \
+  V(0x8E, INT_TO_CHAR, "int-to-char", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegB) \
+  V(0x8F, INT_TO_SHORT, "int-to-short", k12x, kIndexNone, kContinue, kCast, kVerifyRegA | kVerifyRegB) \
+  V(0x90, ADD_INT, "add-int", k23x, kIndexNone, kContinue, kAdd, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x91, SUB_INT, "sub-int", k23x, kIndexNone, kContinue, kSubtract, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x92, MUL_INT, "mul-int", k23x, kIndexNone, kContinue, kMultiply, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x93, DIV_INT, "div-int", k23x, kIndexNone, kContinue | kThrow, kDivide, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x94, REM_INT, "rem-int", k23x, kIndexNone, kContinue | kThrow, kRemainder, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x95, AND_INT, "and-int", k23x, kIndexNone, kContinue, kAnd, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x96, OR_INT, "or-int", k23x, kIndexNone, kContinue, kOr, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x97, XOR_INT, "xor-int", k23x, kIndexNone, kContinue, kXor, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x98, SHL_INT, "shl-int", k23x, kIndexNone, kContinue, kShl, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x99, SHR_INT, "shr-int", k23x, kIndexNone, kContinue, kShr, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x9A, USHR_INT, "ushr-int", k23x, kIndexNone, kContinue, kUshr, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0x9B, ADD_LONG, "add-long", k23x, kIndexNone, kContinue, kAdd, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x9C, SUB_LONG, "sub-long", k23x, kIndexNone, kContinue, kSubtract, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x9D, MUL_LONG, "mul-long", k23x, kIndexNone, kContinue, kMultiply, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x9E, DIV_LONG, "div-long", k23x, kIndexNone, kContinue | kThrow, kDivide, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0x9F, REM_LONG, "rem-long", k23x, kIndexNone, kContinue | kThrow, kRemainder, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xA0, AND_LONG, "and-long", k23x, kIndexNone, kContinue, kAnd, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xA1, OR_LONG, "or-long", k23x, kIndexNone, kContinue, kOr, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xA2, XOR_LONG, "xor-long", k23x, kIndexNone, kContinue, kXor, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xA3, SHL_LONG, "shl-long", k23x, kIndexNone, kContinue, kShl, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegC) \
+  V(0xA4, SHR_LONG, "shr-long", k23x, kIndexNone, kContinue, kShr, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegC) \
+  V(0xA5, USHR_LONG, "ushr-long", k23x, kIndexNone, kContinue, kUshr, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegC) \
+  V(0xA6, ADD_FLOAT, "add-float", k23x, kIndexNone, kContinue, kAdd, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0xA7, SUB_FLOAT, "sub-float", k23x, kIndexNone, kContinue, kSubtract, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0xA8, MUL_FLOAT, "mul-float", k23x, kIndexNone, kContinue, kMultiply, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0xA9, DIV_FLOAT, "div-float", k23x, kIndexNone, kContinue, kDivide, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0xAA, REM_FLOAT, "rem-float", k23x, kIndexNone, kContinue, kRemainder, kVerifyRegA | kVerifyRegB | kVerifyRegC) \
+  V(0xAB, ADD_DOUBLE, "add-double", k23x, kIndexNone, kContinue, kAdd, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xAC, SUB_DOUBLE, "sub-double", k23x, kIndexNone, kContinue, kSubtract, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xAD, MUL_DOUBLE, "mul-double", k23x, kIndexNone, kContinue, kMultiply, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xAE, DIV_DOUBLE, "div-double", k23x, kIndexNone, kContinue, kDivide, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xAF, REM_DOUBLE, "rem-double", k23x, kIndexNone, kContinue, kRemainder, kVerifyRegAWide | kVerifyRegBWide | kVerifyRegCWide) \
+  V(0xB0, ADD_INT_2ADDR, "add-int/2addr", k12x, kIndexNone, kContinue, kAdd, kVerifyRegA | kVerifyRegB) \
+  V(0xB1, SUB_INT_2ADDR, "sub-int/2addr", k12x, kIndexNone, kContinue, kSubtract, kVerifyRegA | kVerifyRegB) \
+  V(0xB2, MUL_INT_2ADDR, "mul-int/2addr", k12x, kIndexNone, kContinue, kMultiply, kVerifyRegA | kVerifyRegB) \
+  V(0xB3, DIV_INT_2ADDR, "div-int/2addr", k12x, kIndexNone, kContinue | kThrow, kDivide, kVerifyRegA | kVerifyRegB) \
+  V(0xB4, REM_INT_2ADDR, "rem-int/2addr", k12x, kIndexNone, kContinue | kThrow, kRemainder, kVerifyRegA | kVerifyRegB) \
+  V(0xB5, AND_INT_2ADDR, "and-int/2addr", k12x, kIndexNone, kContinue, kAnd, kVerifyRegA | kVerifyRegB) \
+  V(0xB6, OR_INT_2ADDR, "or-int/2addr", k12x, kIndexNone, kContinue, kOr, kVerifyRegA | kVerifyRegB) \
+  V(0xB7, XOR_INT_2ADDR, "xor-int/2addr", k12x, kIndexNone, kContinue, kXor, kVerifyRegA | kVerifyRegB) \
+  V(0xB8, SHL_INT_2ADDR, "shl-int/2addr", k12x, kIndexNone, kContinue, kShl, kVerifyRegA | kVerifyRegB) \
+  V(0xB9, SHR_INT_2ADDR, "shr-int/2addr", k12x, kIndexNone, kContinue, kShr, kVerifyRegA | kVerifyRegB) \
+  V(0xBA, USHR_INT_2ADDR, "ushr-int/2addr", k12x, kIndexNone, kContinue, kUshr, kVerifyRegA | kVerifyRegB) \
+  V(0xBB, ADD_LONG_2ADDR, "add-long/2addr", k12x, kIndexNone, kContinue, kAdd, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xBC, SUB_LONG_2ADDR, "sub-long/2addr", k12x, kIndexNone, kContinue, kSubtract, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xBD, MUL_LONG_2ADDR, "mul-long/2addr", k12x, kIndexNone, kContinue, kMultiply, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xBE, DIV_LONG_2ADDR, "div-long/2addr", k12x, kIndexNone, kContinue | kThrow, kDivide, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xBF, REM_LONG_2ADDR, "rem-long/2addr", k12x, kIndexNone, kContinue | kThrow, kRemainder, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xC0, AND_LONG_2ADDR, "and-long/2addr", k12x, kIndexNone, kContinue, kAnd, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xC1, OR_LONG_2ADDR, "or-long/2addr", k12x, kIndexNone, kContinue, kOr, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xC2, XOR_LONG_2ADDR, "xor-long/2addr", k12x, kIndexNone, kContinue, kXor, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xC3, SHL_LONG_2ADDR, "shl-long/2addr", k12x, kIndexNone, kContinue, kShl, kVerifyRegAWide | kVerifyRegB) \
+  V(0xC4, SHR_LONG_2ADDR, "shr-long/2addr", k12x, kIndexNone, kContinue, kShr, kVerifyRegAWide | kVerifyRegB) \
+  V(0xC5, USHR_LONG_2ADDR, "ushr-long/2addr", k12x, kIndexNone, kContinue, kUshr, kVerifyRegAWide | kVerifyRegB) \
+  V(0xC6, ADD_FLOAT_2ADDR, "add-float/2addr", k12x, kIndexNone, kContinue, kAdd, kVerifyRegA | kVerifyRegB) \
+  V(0xC7, SUB_FLOAT_2ADDR, "sub-float/2addr", k12x, kIndexNone, kContinue, kSubtract, kVerifyRegA | kVerifyRegB) \
+  V(0xC8, MUL_FLOAT_2ADDR, "mul-float/2addr", k12x, kIndexNone, kContinue, kMultiply, kVerifyRegA | kVerifyRegB) \
+  V(0xC9, DIV_FLOAT_2ADDR, "div-float/2addr", k12x, kIndexNone, kContinue, kDivide, kVerifyRegA | kVerifyRegB) \
+  V(0xCA, REM_FLOAT_2ADDR, "rem-float/2addr", k12x, kIndexNone, kContinue, kRemainder, kVerifyRegA | kVerifyRegB) \
+  V(0xCB, ADD_DOUBLE_2ADDR, "add-double/2addr", k12x, kIndexNone, kContinue, kAdd, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xCC, SUB_DOUBLE_2ADDR, "sub-double/2addr", k12x, kIndexNone, kContinue, kSubtract, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xCD, MUL_DOUBLE_2ADDR, "mul-double/2addr", k12x, kIndexNone, kContinue, kMultiply, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xCE, DIV_DOUBLE_2ADDR, "div-double/2addr", k12x, kIndexNone, kContinue, kDivide, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xCF, REM_DOUBLE_2ADDR, "rem-double/2addr", k12x, kIndexNone, kContinue, kRemainder, kVerifyRegAWide | kVerifyRegBWide) \
+  V(0xD0, ADD_INT_LIT16, "add-int/lit16", k22s, kIndexNone, kContinue, kAdd | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD1, RSUB_INT, "rsub-int", k22s, kIndexNone, kContinue, kSubtract | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD2, MUL_INT_LIT16, "mul-int/lit16", k22s, kIndexNone, kContinue, kMultiply | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD3, DIV_INT_LIT16, "div-int/lit16", k22s, kIndexNone, kContinue | kThrow, kDivide | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD4, REM_INT_LIT16, "rem-int/lit16", k22s, kIndexNone, kContinue | kThrow, kRemainder | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD5, AND_INT_LIT16, "and-int/lit16", k22s, kIndexNone, kContinue, kAnd | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD6, OR_INT_LIT16, "or-int/lit16", k22s, kIndexNone, kContinue, kOr | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD7, XOR_INT_LIT16, "xor-int/lit16", k22s, kIndexNone, kContinue, kXor | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD8, ADD_INT_LIT8, "add-int/lit8", k22b, kIndexNone, kContinue, kAdd | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xD9, RSUB_INT_LIT8, "rsub-int/lit8", k22b, kIndexNone, kContinue, kSubtract | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xDA, MUL_INT_LIT8, "mul-int/lit8", k22b, kIndexNone, kContinue, kMultiply | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xDB, DIV_INT_LIT8, "div-int/lit8", k22b, kIndexNone, kContinue | kThrow, kDivide | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xDC, REM_INT_LIT8, "rem-int/lit8", k22b, kIndexNone, kContinue | kThrow, kRemainder | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xDD, AND_INT_LIT8, "and-int/lit8", k22b, kIndexNone, kContinue, kAnd | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xDE, OR_INT_LIT8, "or-int/lit8", k22b, kIndexNone, kContinue, kOr | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xDF, XOR_INT_LIT8, "xor-int/lit8", k22b, kIndexNone, kContinue, kXor | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xE0, SHL_INT_LIT8, "shl-int/lit8", k22b, kIndexNone, kContinue, kShl | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xE1, SHR_INT_LIT8, "shr-int/lit8", k22b, kIndexNone, kContinue, kShr | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xE2, USHR_INT_LIT8, "ushr-int/lit8", k22b, kIndexNone, kContinue, kUshr | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB) \
+  V(0xE3, IGET_QUICK, "iget-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xE4, IGET_WIDE_QUICK, "iget-wide-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegAWide | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xE5, IGET_OBJECT_QUICK, "iget-object-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xE6, IPUT_QUICK, "iput-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xE7, IPUT_WIDE_QUICK, "iput-wide-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegAWide | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xE8, IPUT_OBJECT_QUICK, "iput-object-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xE9, INVOKE_VIRTUAL_QUICK, "invoke-virtual-quick", k35c, kIndexVtableOffset, kContinue | kThrow | kInvoke, 0, kVerifyVarArgNonZero | kVerifyRuntimeOnly) \
+  V(0xEA, INVOKE_VIRTUAL_RANGE_QUICK, "invoke-virtual/range-quick", k3rc, kIndexVtableOffset, kContinue | kThrow | kInvoke, 0, kVerifyVarArgRangeNonZero | kVerifyRuntimeOnly) \
+  V(0xEB, IPUT_BOOLEAN_QUICK, "iput-boolean-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xEC, IPUT_BYTE_QUICK, "iput-byte-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xED, IPUT_CHAR_QUICK, "iput-char-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xEE, IPUT_SHORT_QUICK, "iput-short-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kStore | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xEF, IGET_BOOLEAN_QUICK, "iget-boolean-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xF0, IGET_BYTE_QUICK, "iget-byte-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xF1, IGET_CHAR_QUICK, "iget-char-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xF2, IGET_SHORT_QUICK, "iget-short-quick", k22c, kIndexFieldOffset, kContinue | kThrow, kLoad | kRegCFieldOrConstant, kVerifyRegA | kVerifyRegB | kVerifyRuntimeOnly) \
+  V(0xF3, UNUSED_F3, "unused-f3", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xF4, UNUSED_F4, "unused-f4", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xF5, UNUSED_F5, "unused-f5", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xF6, UNUSED_F6, "unused-f6", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xF7, UNUSED_F7, "unused-f7", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xF8, UNUSED_F8, "unused-f8", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xF9, UNUSED_F9, "unused-f9", k10x, kIndexUnknown, 0, 0, kVerifyError) \
+  V(0xFA, INVOKE_POLYMORPHIC, "invoke-polymorphic", k45cc, kIndexMethodAndProtoRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgNonZero | kVerifyRegHPrototype) \
+  V(0xFB, INVOKE_POLYMORPHIC_RANGE, "invoke-polymorphic/range", k4rcc, kIndexMethodAndProtoRef, kContinue | kThrow | kInvoke, 0, kVerifyRegBMethod | kVerifyVarArgRangeNonZero | kVerifyRegHPrototype) \
+  V(0xFC, INVOKE_CUSTOM, "invoke-custom", k35c, kIndexCallSiteRef, kContinue | kThrow, 0, kVerifyRegBCallSite | kVerifyVarArg) \
+  V(0xFD, INVOKE_CUSTOM_RANGE, "invoke-custom/range", k3rc, kIndexCallSiteRef, kContinue | kThrow, 0, kVerifyRegBCallSite | kVerifyVarArgRange) \
+  V(0xFE, CONST_METHOD_HANDLE, "const-method-handle", k21c, kIndexMethodHandleRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegBMethodHandle) \
+  V(0xFF, CONST_METHOD_TYPE, "const-method-type", k21c, kIndexProtoRef, kContinue | kThrow, 0, kVerifyRegA | kVerifyRegBPrototype)
+
+#define DEX_INSTRUCTION_FORMAT_LIST(V) \
+  V(k10x) \
+  V(k12x) \
+  V(k11n) \
+  V(k11x) \
+  V(k10t) \
+  V(k20t) \
+  V(k22x) \
+  V(k21t) \
+  V(k21s) \
+  V(k21h) \
+  V(k21c) \
+  V(k23x) \
+  V(k22b) \
+  V(k22t) \
+  V(k22s) \
+  V(k22c) \
+  V(k32x) \
+  V(k30t) \
+  V(k31t) \
+  V(k31i) \
+  V(k31c) \
+  V(k35c) \
+  V(k3rc) \
+  V(k45cc) \
+  V(k4rcc) \
+  V(k51l)
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_LIST_H_
+#undef ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_LIST_H_  // the guard in this file is just for cpplint

Bcore/src/main/cpp/dex/dex_instruction_utils.h

@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_UTILS_H_
+#define ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_UTILS_H_
+
+#include "dex_instruction.h"
+
+namespace art_lkchan {
+
+// Dex invoke type corresponds to the ordering of INVOKE instructions;
+// this order is the same for range and non-range invokes.
+enum DexInvokeType : uint8_t {
+  kDexInvokeVirtual = 0,  // invoke-virtual, invoke-virtual-range
+  kDexInvokeSuper,        // invoke-super, invoke-super-range
+  kDexInvokeDirect,       // invoke-direct, invoke-direct-range
+  kDexInvokeStatic,       // invoke-static, invoke-static-range
+  kDexInvokeInterface,    // invoke-interface, invoke-interface-range
+  kDexInvokeTypeCount
+};
+
+// Dex instruction memory access types correspond to the ordering of GET/PUT instructions;
+// this order is the same for IGET, IPUT, SGET, SPUT, AGET and APUT.
+enum DexMemAccessType : uint8_t {
+  kDexMemAccessWord = 0,  // op         0; int or float, the actual type is not encoded.
+  kDexMemAccessWide,      // op_WIDE    1; long or double, the actual type is not encoded.
+  kDexMemAccessObject,    // op_OBJECT  2; the actual reference type is not encoded.
+  kDexMemAccessBoolean,   // op_BOOLEAN 3
+  kDexMemAccessByte,      // op_BYTE    4
+  kDexMemAccessChar,      // op_CHAR    5
+  kDexMemAccessShort,     // op_SHORT   6
+  kDexMemAccessTypeCount
+};
+
+std::ostream& operator<<(std::ostream& os, const DexMemAccessType& type);
+
+// NOTE: The following functions disregard quickened instructions.
+
+// By "direct" const we mean to exclude const-string and const-class
+// which load data from somewhere else, i.e. indirectly.
+constexpr bool IsInstructionDirectConst(Instruction::Code opcode) {
+  return Instruction::CONST_4 <= opcode && opcode <= Instruction::CONST_WIDE_HIGH16;
+}
+
+constexpr bool IsInstructionConstWide(Instruction::Code opcode) {
+  return Instruction::CONST_WIDE_16 <= opcode && opcode <= Instruction::CONST_WIDE_HIGH16;
+}
+
+constexpr bool IsInstructionReturn(Instruction::Code opcode) {
+  return Instruction::RETURN_VOID <= opcode && opcode <= Instruction::RETURN_OBJECT;
+}
+
+constexpr bool IsInstructionInvoke(Instruction::Code opcode) {
+  return Instruction::INVOKE_VIRTUAL <= opcode && opcode <= Instruction::INVOKE_INTERFACE_RANGE &&
+      opcode != Instruction::RETURN_VOID_NO_BARRIER;
+}
+
+constexpr bool IsInstructionQuickInvoke(Instruction::Code opcode) {
+  return opcode == Instruction::INVOKE_VIRTUAL_QUICK ||
+      opcode == Instruction::INVOKE_VIRTUAL_RANGE_QUICK;
+}
+
+constexpr bool IsInstructionInvokeStatic(Instruction::Code opcode) {
+  return opcode == Instruction::INVOKE_STATIC || opcode == Instruction::INVOKE_STATIC_RANGE;
+}
+
+constexpr bool IsInstructionGoto(Instruction::Code opcode) {
+  return Instruction::GOTO <= opcode && opcode <= Instruction::GOTO_32;
+}
+
+constexpr bool IsInstructionIfCc(Instruction::Code opcode) {
+  return Instruction::IF_EQ <= opcode && opcode <= Instruction::IF_LE;
+}
+
+constexpr bool IsInstructionIfCcZ(Instruction::Code opcode) {
+  return Instruction::IF_EQZ <= opcode && opcode <= Instruction::IF_LEZ;
+}
+
+constexpr bool IsInstructionIGet(Instruction::Code code) {
+  return Instruction::IGET <= code && code <= Instruction::IGET_SHORT;
+}
+
+constexpr bool IsInstructionIPut(Instruction::Code code) {
+  return Instruction::IPUT <= code && code <= Instruction::IPUT_SHORT;
+}
+
+constexpr bool IsInstructionSGet(Instruction::Code code) {
+  return Instruction::SGET <= code && code <= Instruction::SGET_SHORT;
+}
+
+constexpr bool IsInstructionSPut(Instruction::Code code) {
+  return Instruction::SPUT <= code && code <= Instruction::SPUT_SHORT;
+}
+
+constexpr bool IsInstructionAGet(Instruction::Code code) {
+  return Instruction::AGET <= code && code <= Instruction::AGET_SHORT;
+}
+
+constexpr bool IsInstructionAPut(Instruction::Code code) {
+  return Instruction::APUT <= code && code <= Instruction::APUT_SHORT;
+}
+
+constexpr bool IsInstructionIGetOrIPut(Instruction::Code code) {
+  return Instruction::IGET <= code && code <= Instruction::IPUT_SHORT;
+}
+
+constexpr bool IsInstructionIGetQuickOrIPutQuick(Instruction::Code code) {
+  return (code >= Instruction::IGET_QUICK && code <= Instruction::IPUT_OBJECT_QUICK) ||
+      (code >= Instruction::IPUT_BOOLEAN_QUICK && code <= Instruction::IGET_SHORT_QUICK);
+}
+
+constexpr bool IsInstructionSGetOrSPut(Instruction::Code code) {
+  return Instruction::SGET <= code && code <= Instruction::SPUT_SHORT;
+}
+
+constexpr bool IsInstructionAGetOrAPut(Instruction::Code code) {
+  return Instruction::AGET <= code && code <= Instruction::APUT_SHORT;
+}
+
+constexpr bool IsInstructionBinOp2Addr(Instruction::Code code) {
+  return Instruction::ADD_INT_2ADDR <= code && code <= Instruction::REM_DOUBLE_2ADDR;
+}
+
+constexpr bool IsInvokeInstructionRange(Instruction::Code opcode) {
+  DCHECK(IsInstructionInvoke(opcode));
+  return opcode >= Instruction::INVOKE_VIRTUAL_RANGE;
+}
+
+constexpr DexInvokeType InvokeInstructionType(Instruction::Code opcode) {
+  DCHECK(IsInstructionInvoke(opcode));
+  return static_cast<DexInvokeType>(IsInvokeInstructionRange(opcode)
+                                    ? (opcode - Instruction::INVOKE_VIRTUAL_RANGE)
+                                    : (opcode - Instruction::INVOKE_VIRTUAL));
+}
+
+constexpr DexMemAccessType IGetMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionIGet(code));
+  return static_cast<DexMemAccessType>(code - Instruction::IGET);
+}
+
+constexpr DexMemAccessType IPutMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionIPut(code));
+  return static_cast<DexMemAccessType>(code - Instruction::IPUT);
+}
+
+constexpr DexMemAccessType SGetMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionSGet(code));
+  return static_cast<DexMemAccessType>(code - Instruction::SGET);
+}
+
+constexpr DexMemAccessType SPutMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionSPut(code));
+  return static_cast<DexMemAccessType>(code - Instruction::SPUT);
+}
+
+constexpr DexMemAccessType AGetMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionAGet(code));
+  return static_cast<DexMemAccessType>(code - Instruction::AGET);
+}
+
+constexpr DexMemAccessType APutMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionAPut(code));
+  return static_cast<DexMemAccessType>(code - Instruction::APUT);
+}
+
+constexpr DexMemAccessType IGetOrIPutMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionIGetOrIPut(code));
+  return (code >= Instruction::IPUT) ? IPutMemAccessType(code) : IGetMemAccessType(code);
+}
+
+inline DexMemAccessType IGetQuickOrIPutQuickMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionIGetQuickOrIPutQuick(code));
+  switch (code) {
+    case Instruction::IGET_QUICK: case Instruction::IPUT_QUICK:
+      return kDexMemAccessWord;
+    case Instruction::IGET_WIDE_QUICK: case Instruction::IPUT_WIDE_QUICK:
+      return kDexMemAccessWide;
+    case Instruction::IGET_OBJECT_QUICK: case Instruction::IPUT_OBJECT_QUICK:
+      return kDexMemAccessObject;
+    case Instruction::IGET_BOOLEAN_QUICK: case Instruction::IPUT_BOOLEAN_QUICK:
+      return kDexMemAccessBoolean;
+    case Instruction::IGET_BYTE_QUICK: case Instruction::IPUT_BYTE_QUICK:
+      return kDexMemAccessByte;
+    case Instruction::IGET_CHAR_QUICK: case Instruction::IPUT_CHAR_QUICK:
+      return kDexMemAccessChar;
+    case Instruction::IGET_SHORT_QUICK: case Instruction::IPUT_SHORT_QUICK:
+      return kDexMemAccessShort;
+    default:
+      LOG(FATAL) << code;
+      UNREACHABLE();
+  }
+}
+
+constexpr DexMemAccessType SGetOrSPutMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionSGetOrSPut(code));
+  return (code >= Instruction::SPUT) ? SPutMemAccessType(code) : SGetMemAccessType(code);
+}
+
+constexpr DexMemAccessType AGetOrAPutMemAccessType(Instruction::Code code) {
+  DCHECK(IsInstructionAGetOrAPut(code));
+  return (code >= Instruction::APUT) ? APutMemAccessType(code) : AGetMemAccessType(code);
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_DEX_INSTRUCTION_UTILS_H_

Bcore/src/main/cpp/dex/hidden_api_access_flags.h

@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_HIDDEN_API_ACCESS_FLAGS_H_
+#define ART_LIBDEXFILE_DEX_HIDDEN_API_ACCESS_FLAGS_H_
+
+#include "base/bit_utils.h"
+#include "base/macros.h"
+#include "dex/modifiers.h"
+
+namespace art_lkchan {
+
+/* This class is used for encoding and decoding access flags of class members
+ * from the boot class path. These access flags might contain additional two bits
+ * of information on whether the given class member should be hidden from apps
+ * and under what circumstances.
+ *
+ * The encoding is different inside DexFile, where we are concerned with size,
+ * and at runtime where we want to optimize for speed of access. The class
+ * provides helper functions to decode/encode both of them.
+ *
+ * Encoding in DexFile
+ * ===================
+ *
+ * First bit is encoded as inversion of visibility flags (public/private/protected).
+ * At most one can be set for any given class member. If two or three are set,
+ * this is interpreted as the first bit being set and actual visibility flags
+ * being the complement of the encoded flags.
+ *
+ * Second bit is either encoded as bit 5 for fields and non-native methods, where
+ * it carries no other meaning. If a method is native (bit 8 set), bit 9 is used.
+ *
+ * Bits were selected so that they never increase the length of unsigned LEB-128
+ * encoding of the access flags.
+ *
+ * Encoding at runtime
+ * ===================
+ *
+ * Two bits are set aside in the uint32_t access flags in the intrinsics ordinal
+ * space (thus intrinsics need to be special-cased). These are two consecutive
+ * bits and they are directly used to store the integer value of the ApiList
+ * enum values.
+ *
+ */
+class HiddenApiAccessFlags {
+ public:
+  enum ApiList {
+    kWhitelist = 0,
+    kLightGreylist,
+    kDarkGreylist,
+    kBlacklist,
+  };
+
+  static ALWAYS_INLINE ApiList DecodeFromDex(uint32_t dex_access_flags) {
+    DexHiddenAccessFlags flags(dex_access_flags);
+    uint32_t int_value = (flags.IsFirstBitSet() ? 1 : 0) + (flags.IsSecondBitSet() ? 2 : 0);
+    return static_cast<ApiList>(int_value);
+  }
+
+  static ALWAYS_INLINE uint32_t RemoveFromDex(uint32_t dex_access_flags) {
+    DexHiddenAccessFlags flags(dex_access_flags);
+    flags.SetFirstBit(false);
+    flags.SetSecondBit(false);
+    return flags.GetEncoding();
+  }
+
+  static ALWAYS_INLINE uint32_t EncodeForDex(uint32_t dex_access_flags, ApiList value) {
+    DexHiddenAccessFlags flags(RemoveFromDex(dex_access_flags));
+    uint32_t int_value = static_cast<uint32_t>(value);
+    flags.SetFirstBit((int_value & 1) != 0);
+    flags.SetSecondBit((int_value & 2) != 0);
+    return flags.GetEncoding();
+  }
+
+  static ALWAYS_INLINE ApiList DecodeFromRuntime(uint32_t runtime_access_flags) {
+    // This is used in the fast path, only DCHECK here.
+    DCHECK_EQ(runtime_access_flags & kAccIntrinsic, 0u);
+    uint32_t int_value = (runtime_access_flags & kAccHiddenApiBits) >> kAccFlagsShift;
+    return static_cast<ApiList>(int_value);
+  }
+
+  static ALWAYS_INLINE uint32_t EncodeForRuntime(uint32_t runtime_access_flags, ApiList value) {
+    CHECK_EQ(runtime_access_flags & kAccIntrinsic, 0u);
+
+    uint32_t hidden_api_flags = static_cast<uint32_t>(value) << kAccFlagsShift;
+    CHECK_EQ(hidden_api_flags & ~kAccHiddenApiBits, 0u);
+
+    runtime_access_flags &= ~kAccHiddenApiBits;
+    return runtime_access_flags | hidden_api_flags;
+  }
+
+ private:
+  static const int kAccFlagsShift = CTZ(kAccHiddenApiBits);
+  static_assert(IsPowerOfTwo((kAccHiddenApiBits >> kAccFlagsShift) + 1),
+                "kAccHiddenApiBits are not continuous");
+
+  struct DexHiddenAccessFlags {
+    explicit DexHiddenAccessFlags(uint32_t access_flags) : access_flags_(access_flags) {}
+
+    ALWAYS_INLINE uint32_t GetSecondFlag() {
+      return ((access_flags_ & kAccNative) != 0) ? kAccDexHiddenBitNative : kAccDexHiddenBit;
+    }
+
+    ALWAYS_INLINE bool IsFirstBitSet() {
+      static_assert(IsPowerOfTwo(0u), "Following statement checks if *at most* one bit is set");
+      return !IsPowerOfTwo(access_flags_ & kAccVisibilityFlags);
+    }
+
+    ALWAYS_INLINE void SetFirstBit(bool value) {
+      if (IsFirstBitSet() != value) {
+        access_flags_ ^= kAccVisibilityFlags;
+      }
+    }
+
+    ALWAYS_INLINE bool IsSecondBitSet() {
+      return (access_flags_ & GetSecondFlag()) != 0;
+    }
+
+    ALWAYS_INLINE void SetSecondBit(bool value) {
+      if (value) {
+        access_flags_ |= GetSecondFlag();
+      } else {
+        access_flags_ &= ~GetSecondFlag();
+      }
+    }
+
+    ALWAYS_INLINE uint32_t GetEncoding() const {
+      return access_flags_;
+    }
+
+    uint32_t access_flags_;
+  };
+};
+
+inline std::ostream& operator<<(std::ostream& os, HiddenApiAccessFlags::ApiList value) {
+  switch (value) {
+    case HiddenApiAccessFlags::kWhitelist:
+      os << "whitelist";
+      break;
+    case HiddenApiAccessFlags::kLightGreylist:
+      os << "light greylist";
+      break;
+    case HiddenApiAccessFlags::kDarkGreylist:
+      os << "dark greylist";
+      break;
+    case HiddenApiAccessFlags::kBlacklist:
+      os << "blacklist";
+      break;
+  }
+  return os;
+}
+
+}  // namespace art_lkchan
+
+
+#endif  // ART_LIBDEXFILE_DEX_HIDDEN_API_ACCESS_FLAGS_H_

Bcore/src/main/cpp/dex/invoke_type.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_INVOKE_TYPE_H_
+#define ART_LIBDEXFILE_DEX_INVOKE_TYPE_H_
+
+#include <iosfwd>
+
+namespace art_lkchan {
+
+enum InvokeType : uint32_t {
+  kStatic,       // <<static>>
+  kDirect,       // <<direct>>
+  kVirtual,      // <<virtual>>
+  kSuper,        // <<super>>
+  kInterface,    // <<interface>>
+  kPolymorphic,  // <<polymorphic>>
+  kMaxInvokeType = kPolymorphic
+};
+
+std::ostream& operator<<(std::ostream& os, const InvokeType& rhs);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_INVOKE_TYPE_H_

Bcore/src/main/cpp/dex/method_reference.h

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_METHOD_REFERENCE_H_
+#define ART_LIBDEXFILE_DEX_METHOD_REFERENCE_H_
+
+#include <stdint.h>
+#include <string>
+#include "dex/dex_file.h"
+#include "dex/dex_file_reference.h"
+
+namespace art_lkchan {
+
+// A method is uniquely located by its DexFile and the method_ids_ table index into that DexFile
+class MethodReference : public DexFileReference {
+ public:
+  MethodReference(const DexFile* file, uint32_t index) : DexFileReference(file, index) {}
+  std::string PrettyMethod(bool with_signature = true) const {
+    return dex_file->PrettyMethod(index, with_signature);
+  }
+  const DexFile::MethodId& GetMethodId() const {
+    return dex_file->GetMethodId(index);
+  }
+};
+
+// Compare the actual referenced method signatures. Used for method reference deduplication.
+struct MethodReferenceValueComparator {
+  bool operator()(MethodReference mr1, MethodReference mr2) const {
+    if (mr1.dex_file == mr2.dex_file) {
+      DCHECK_EQ(mr1.index < mr2.index, SlowCompare(mr1, mr2));
+      return mr1.index < mr2.index;
+    } else {
+      return SlowCompare(mr1, mr2);
+    }
+  }
+
+  bool SlowCompare(MethodReference mr1, MethodReference mr2) const {
+    // The order is the same as for method ids in a single dex file.
+    // Compare the class descriptors first.
+    const DexFile::MethodId& mid1 = mr1.GetMethodId();
+    const DexFile::MethodId& mid2 = mr2.GetMethodId();
+    int descriptor_diff = strcmp(mr1.dex_file->StringByTypeIdx(mid1.class_idx_),
+                                 mr2.dex_file->StringByTypeIdx(mid2.class_idx_));
+    if (descriptor_diff != 0) {
+      return descriptor_diff < 0;
+    }
+    // Compare names second.
+    int name_diff = strcmp(mr1.dex_file->GetMethodName(mid1), mr2.dex_file->GetMethodName(mid2));
+    if (name_diff != 0) {
+      return name_diff < 0;
+    }
+    // And then compare proto ids, starting with return type comparison.
+    const DexFile::ProtoId& prid1 = mr1.dex_file->GetProtoId(mid1.proto_idx_);
+    const DexFile::ProtoId& prid2 = mr2.dex_file->GetProtoId(mid2.proto_idx_);
+    int return_type_diff = strcmp(mr1.dex_file->StringByTypeIdx(prid1.return_type_idx_),
+                                  mr2.dex_file->StringByTypeIdx(prid2.return_type_idx_));
+    if (return_type_diff != 0) {
+      return return_type_diff < 0;
+    }
+    // And finishing with lexicographical parameter comparison.
+    const DexFile::TypeList* params1 = mr1.dex_file->GetProtoParameters(prid1);
+    size_t param1_size = (params1 != nullptr) ? params1->Size() : 0u;
+    const DexFile::TypeList* params2 = mr2.dex_file->GetProtoParameters(prid2);
+    size_t param2_size = (params2 != nullptr) ? params2->Size() : 0u;
+    for (size_t i = 0, num = std::min(param1_size, param2_size); i != num; ++i) {
+      int param_diff = strcmp(mr1.dex_file->StringByTypeIdx(params1->GetTypeItem(i).type_idx_),
+                              mr2.dex_file->StringByTypeIdx(params2->GetTypeItem(i).type_idx_));
+      if (param_diff != 0) {
+        return param_diff < 0;
+      }
+    }
+    return param1_size < param2_size;
+  }
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_METHOD_REFERENCE_H_

Bcore/src/main/cpp/dex/modifiers.cc

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string>
+
+#include "modifiers.h"
+
+namespace art_lkchan {
+
+std::string PrettyJavaAccessFlags(uint32_t access_flags) {
+  std::string result;
+  if ((access_flags & kAccPublic) != 0) {
+    result += "public ";
+  }
+  if ((access_flags & kAccProtected) != 0) {
+    result += "protected ";
+  }
+  if ((access_flags & kAccPrivate) != 0) {
+    result += "private ";
+  }
+  if ((access_flags & kAccFinal) != 0) {
+    result += "final ";
+  }
+  if ((access_flags & kAccStatic) != 0) {
+    result += "static ";
+  }
+  if ((access_flags & kAccAbstract) != 0) {
+    result += "abstract ";
+  }
+  if ((access_flags & kAccInterface) != 0) {
+    result += "interface ";
+  }
+  if ((access_flags & kAccTransient) != 0) {
+    result += "transient ";
+  }
+  if ((access_flags & kAccVolatile) != 0) {
+    result += "volatile ";
+  }
+  if ((access_flags & kAccSynchronized) != 0) {
+    result += "synchronized ";
+  }
+  return result;
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/modifiers.h

@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_MODIFIERS_H_
+#define ART_LIBDEXFILE_DEX_MODIFIERS_H_
+
+#include <stdint.h>
+
+namespace art_lkchan {
+
+static constexpr uint32_t kAccPublic =       0x0001;  // class, field, method, ic
+static constexpr uint32_t kAccPrivate =      0x0002;  // field, method, ic
+static constexpr uint32_t kAccProtected =    0x0004;  // field, method, ic
+static constexpr uint32_t kAccStatic =       0x0008;  // field, method, ic
+static constexpr uint32_t kAccFinal =        0x0010;  // class, field, method, ic
+static constexpr uint32_t kAccSynchronized = 0x0020;  // method (only allowed on natives)
+static constexpr uint32_t kAccSuper =        0x0020;  // class (not used in dex)
+static constexpr uint32_t kAccVolatile =     0x0040;  // field
+static constexpr uint32_t kAccBridge =       0x0040;  // method (1.5)
+static constexpr uint32_t kAccTransient =    0x0080;  // field
+static constexpr uint32_t kAccVarargs =      0x0080;  // method (1.5)
+static constexpr uint32_t kAccNative =       0x0100;  // method
+static constexpr uint32_t kAccInterface =    0x0200;  // class, ic
+static constexpr uint32_t kAccAbstract =     0x0400;  // class, method, ic
+static constexpr uint32_t kAccStrict =       0x0800;  // method
+static constexpr uint32_t kAccSynthetic =    0x1000;  // class, field, method, ic
+static constexpr uint32_t kAccAnnotation =   0x2000;  // class, ic (1.5)
+static constexpr uint32_t kAccEnum =         0x4000;  // class, field, ic (1.5)
+
+static constexpr uint32_t kAccJavaFlagsMask = 0xffff;  // bits set from Java sources (low 16)
+
+// The following flags are used to insert hidden API access flags into boot
+// class path dex files. They are decoded by DexFile::ClassDataItemIterator and
+// removed from the access flags before used by the runtime.
+static constexpr uint32_t kAccDexHiddenBit =          0x00000020;  // field, method (not native)
+static constexpr uint32_t kAccDexHiddenBitNative =    0x00000200;  // method (native)
+
+static constexpr uint32_t kAccConstructor =           0x00010000;  // method (dex only) <(cl)init>
+static constexpr uint32_t kAccDeclaredSynchronized =  0x00020000;  // method (dex only)
+static constexpr uint32_t kAccClassIsProxy =          0x00040000;  // class  (dex only)
+// Set to indicate that the ArtMethod is obsolete and has a different DexCache + DexFile from its
+// declaring class. This flag may only be applied to methods.
+static constexpr uint32_t kAccObsoleteMethod =        0x00040000;  // method (runtime)
+// Used by a method to denote that its execution does not need to go through slow path interpreter.
+static constexpr uint32_t kAccSkipAccessChecks =      0x00080000;  // method (runtime, not native)
+// Used by a class to denote that the verifier has attempted to check it at least once.
+static constexpr uint32_t kAccVerificationAttempted = 0x00080000;  // class (runtime)
+static constexpr uint32_t kAccSkipHiddenApiChecks =   0x00100000;  // class (runtime)
+// This is set by the class linker during LinkInterfaceMethods. It is used by a method to represent
+// that it was copied from its declaring class into another class. All methods marked kAccMiranda
+// and kAccDefaultConflict will have this bit set. Any kAccDefault method contained in the methods_
+// array of a concrete class will also have this bit set.
+static constexpr uint32_t kAccCopied =                0x00100000;  // method (runtime)
+static constexpr uint32_t kAccMiranda =               0x00200000;  // method (runtime, not native)
+static constexpr uint32_t kAccDefault =               0x00400000;  // method (runtime)
+// Native method flags are set when linking the methods based on the presence of the
+// @dalvik.annotation.optimization.{Fast,Critical}Native annotations with build visibility.
+// Reuse the values of kAccSkipAccessChecks and kAccMiranda which are not used for native methods.
+static constexpr uint32_t kAccFastNative =            0x00080000;  // method (runtime; native only)
+static constexpr uint32_t kAccCriticalNative =        0x00200000;  // method (runtime; native only)
+
+// Set by the JIT when clearing profiling infos to denote that a method was previously warm.
+static constexpr uint32_t kAccPreviouslyWarm =        0x00800000;  // method (runtime)
+
+// This is set by the class linker during LinkInterfaceMethods. Prior to that point we do not know
+// if any particular method needs to be a default conflict. Used to figure out at runtime if
+// invoking this method will throw an exception.
+static constexpr uint32_t kAccDefaultConflict =       0x01000000;  // method (runtime)
+
+// Set by the verifier for a method we do not want the compiler to compile.
+static constexpr uint32_t kAccCompileDontBother =     0x02000000;  // method (runtime)
+
+// Set by the verifier for a method that could not be verified to follow structured locking.
+static constexpr uint32_t kAccMustCountLocks =        0x04000000;  // method (runtime)
+
+// Set by the class linker for a method that has only one implementation for a
+// virtual call.
+static constexpr uint32_t kAccSingleImplementation =  0x08000000;  // method (runtime)
+
+static constexpr uint32_t kAccHiddenApiBits =         0x30000000;  // field, method
+
+// Not currently used, except for intrinsic methods where these bits
+// are part of the intrinsic ordinal.
+static constexpr uint32_t kAccMayBeUnusedBits =       0x40000000;
+
+// Set by the compiler driver when compiling boot classes with instrinsic methods.
+static constexpr uint32_t kAccIntrinsic  =            0x80000000;  // method (runtime)
+
+// Special runtime-only flags.
+// Interface and all its super-interfaces with default methods have been recursively initialized.
+static constexpr uint32_t kAccRecursivelyInitialized    = 0x20000000;
+// Interface declares some default method.
+static constexpr uint32_t kAccHasDefaultMethod          = 0x40000000;
+// class/ancestor overrides finalize()
+static constexpr uint32_t kAccClassIsFinalizable        = 0x80000000;
+
+// Continuous sequence of bits used to hold the ordinal of an intrinsic method. Flags
+// which overlap are not valid when kAccIntrinsic is set.
+static constexpr uint32_t kAccIntrinsicBits = kAccMayBeUnusedBits | kAccHiddenApiBits |
+    kAccSingleImplementation | kAccMustCountLocks | kAccCompileDontBother | kAccDefaultConflict |
+    kAccPreviouslyWarm;
+
+// Valid (meaningful) bits for a field.
+static constexpr uint32_t kAccValidFieldFlags = kAccPublic | kAccPrivate | kAccProtected |
+    kAccStatic | kAccFinal | kAccVolatile | kAccTransient | kAccSynthetic | kAccEnum;
+
+// Valid (meaningful) bits for a method.
+static constexpr uint32_t kAccValidMethodFlags = kAccPublic | kAccPrivate | kAccProtected |
+    kAccStatic | kAccFinal | kAccSynchronized | kAccBridge | kAccVarargs | kAccNative |
+    kAccAbstract | kAccStrict | kAccSynthetic | kAccConstructor | kAccDeclaredSynchronized;
+static_assert(((kAccIntrinsic | kAccIntrinsicBits) & kAccValidMethodFlags) == 0,
+              "Intrinsic bits and valid dex file method access flags must not overlap.");
+
+// Valid (meaningful) bits for a class (not interface).
+// Note 1. These are positive bits. Other bits may have to be zero.
+// Note 2. Inner classes can expose more access flags to Java programs. That is handled by libcore.
+static constexpr uint32_t kAccValidClassFlags = kAccPublic | kAccFinal | kAccSuper |
+    kAccAbstract | kAccSynthetic | kAccEnum;
+
+// Valid (meaningful) bits for an interface.
+// Note 1. Annotations are interfaces.
+// Note 2. These are positive bits. Other bits may have to be zero.
+// Note 3. Inner classes can expose more access flags to Java programs. That is handled by libcore.
+static constexpr uint32_t kAccValidInterfaceFlags = kAccPublic | kAccInterface |
+    kAccAbstract | kAccSynthetic | kAccAnnotation;
+
+static constexpr uint32_t kAccVisibilityFlags = kAccPublic | kAccPrivate | kAccProtected;
+
+// Returns a human-readable version of the Java part of the access flags, e.g., "private static "
+// (note the trailing whitespace).
+std::string PrettyJavaAccessFlags(uint32_t access_flags);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_MODIFIERS_H_
+

Bcore/src/main/cpp/dex/primitive.cc

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dex/primitive.h"
+
+namespace art_lkchan {
+
+static const char* kTypeNames[] = {
+  "PrimNot",
+  "PrimBoolean",
+  "PrimByte",
+  "PrimChar",
+  "PrimShort",
+  "PrimInt",
+  "PrimLong",
+  "PrimFloat",
+  "PrimDouble",
+  "PrimVoid",
+};
+
+static const char* kBoxedDescriptors[] = {
+  "Ljava/lang/Object;",
+  "Ljava/lang/Boolean;",
+  "Ljava/lang/Byte;",
+  "Ljava/lang/Character;",
+  "Ljava/lang/Short;",
+  "Ljava/lang/Integer;",
+  "Ljava/lang/Long;",
+  "Ljava/lang/Float;",
+  "Ljava/lang/Double;",
+  "Ljava/lang/Void;",
+};
+
+#define COUNT_OF(x) (sizeof(x) / sizeof((x)[0]))
+
+const char* Primitive::PrettyDescriptor(Primitive::Type type) {
+  static_assert(COUNT_OF(kTypeNames) == static_cast<size_t>(Primitive::kPrimLast) + 1,
+                "Missing element");
+  CHECK(Primitive::kPrimNot <= type && type <= Primitive::kPrimVoid) << static_cast<int>(type);
+  return kTypeNames[type];
+}
+
+const char* Primitive::BoxedDescriptor(Primitive::Type type) {
+  static_assert(COUNT_OF(kBoxedDescriptors) == static_cast<size_t>(Primitive::kPrimLast) + 1,
+                "Missing element");
+  CHECK(Primitive::kPrimNot <= type && type <= Primitive::kPrimVoid) << static_cast<int>(type);
+  return kBoxedDescriptors[type];
+}
+
+std::ostream& operator<<(std::ostream& os, Primitive::Type type) {
+  uint32_t int_type = static_cast<uint32_t>(type);
+  if (type <= Primitive::kPrimLast) {
+    os << kTypeNames[int_type];
+  } else {
+    os << "Type[" << int_type << "]";
+  }
+  return os;
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/primitive.h

@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_PRIMITIVE_H_
+#define ART_LIBDEXFILE_DEX_PRIMITIVE_H_
+
+#include <sys/types.h>
+
+#include <android-base/logging.h>
+
+#include "base/macros.h"
+
+namespace art_lkchan {
+
+static constexpr size_t kObjectReferenceSize = 4;
+
+constexpr size_t ComponentSizeShiftWidth(size_t component_size) {
+  return component_size == 1u ? 0u :
+      component_size == 2u ? 1u :
+          component_size == 4u ? 2u :
+              component_size == 8u ? 3u : 0u;
+}
+
+class Primitive {
+ public:
+  enum Type {
+    kPrimNot = 0,
+    kPrimBoolean,
+    kPrimByte,
+    kPrimChar,
+    kPrimShort,
+    kPrimInt,
+    kPrimLong,
+    kPrimFloat,
+    kPrimDouble,
+    kPrimVoid,
+    kPrimLast = kPrimVoid
+  };
+
+  static constexpr Type GetType(char type) {
+    switch (type) {
+      case 'B':
+        return kPrimByte;
+      case 'C':
+        return kPrimChar;
+      case 'D':
+        return kPrimDouble;
+      case 'F':
+        return kPrimFloat;
+      case 'I':
+        return kPrimInt;
+      case 'J':
+        return kPrimLong;
+      case 'S':
+        return kPrimShort;
+      case 'Z':
+        return kPrimBoolean;
+      case 'V':
+        return kPrimVoid;
+      default:
+        return kPrimNot;
+    }
+  }
+
+  static constexpr size_t ComponentSizeShift(Type type) {
+    switch (type) {
+      case kPrimVoid:
+      case kPrimBoolean:
+      case kPrimByte:    return 0;
+      case kPrimChar:
+      case kPrimShort:   return 1;
+      case kPrimInt:
+      case kPrimFloat:   return 2;
+      case kPrimLong:
+      case kPrimDouble:  return 3;
+      case kPrimNot:     return ComponentSizeShiftWidth(kObjectReferenceSize);
+    }
+    LOG(FATAL) << "Invalid type " << static_cast<int>(type);
+    UNREACHABLE();
+  }
+
+  static constexpr size_t ComponentSize(Type type) {
+    switch (type) {
+      case kPrimVoid:    return 0;
+      case kPrimBoolean:
+      case kPrimByte:    return 1;
+      case kPrimChar:
+      case kPrimShort:   return 2;
+      case kPrimInt:
+      case kPrimFloat:   return 4;
+      case kPrimLong:
+      case kPrimDouble:  return 8;
+      case kPrimNot:     return kObjectReferenceSize;
+    }
+    LOG(FATAL) << "Invalid type " << static_cast<int>(type);
+    UNREACHABLE();
+  }
+
+  static const char* Descriptor(Type type) {
+    switch (type) {
+      case kPrimBoolean:
+        return "Z";
+      case kPrimByte:
+        return "B";
+      case kPrimChar:
+        return "C";
+      case kPrimShort:
+        return "S";
+      case kPrimInt:
+        return "I";
+      case kPrimFloat:
+        return "F";
+      case kPrimLong:
+        return "J";
+      case kPrimDouble:
+        return "D";
+      case kPrimVoid:
+        return "V";
+      default:
+        LOG(FATAL) << "Primitive char conversion on invalid type " << static_cast<int>(type);
+        return nullptr;
+    }
+  }
+
+  static const char* PrettyDescriptor(Type type);
+
+  // Returns the descriptor corresponding to the boxed type of |type|.
+  static const char* BoxedDescriptor(Type type);
+
+  // Returns true if |type| is an numeric type.
+  static constexpr bool IsNumericType(Type type) {
+    switch (type) {
+      case Primitive::Type::kPrimNot: return false;
+      case Primitive::Type::kPrimBoolean: return false;
+      case Primitive::Type::kPrimByte: return true;
+      case Primitive::Type::kPrimChar: return true;
+      case Primitive::Type::kPrimShort: return true;
+      case Primitive::Type::kPrimInt: return true;
+      case Primitive::Type::kPrimLong: return true;
+      case Primitive::Type::kPrimFloat: return true;
+      case Primitive::Type::kPrimDouble: return true;
+      case Primitive::Type::kPrimVoid: return false;
+    }
+    LOG(FATAL) << "Invalid type " << static_cast<int>(type);
+    UNREACHABLE();
+  }
+
+  // Return trues if |type| is a signed numeric type.
+  static constexpr bool IsSignedNumericType(Type type) {
+    switch (type) {
+      case Primitive::Type::kPrimNot: return false;
+      case Primitive::Type::kPrimBoolean: return false;
+      case Primitive::Type::kPrimByte: return true;
+      case Primitive::Type::kPrimChar: return false;
+      case Primitive::Type::kPrimShort: return true;
+      case Primitive::Type::kPrimInt: return true;
+      case Primitive::Type::kPrimLong: return true;
+      case Primitive::Type::kPrimFloat: return true;
+      case Primitive::Type::kPrimDouble: return true;
+      case Primitive::Type::kPrimVoid: return false;
+    }
+    LOG(FATAL) << "Invalid type " << static_cast<int>(type);
+    UNREACHABLE();
+  }
+
+  // Returns the number of bits required to hold the largest
+  // positive number that can be represented by |type|.
+  static constexpr size_t BitsRequiredForLargestValue(Type type) {
+    switch (type) {
+      case Primitive::Type::kPrimNot: return 0u;
+      case Primitive::Type::kPrimBoolean: return 1u;
+      case Primitive::Type::kPrimByte: return 7u;
+      case Primitive::Type::kPrimChar: return 16u;
+      case Primitive::Type::kPrimShort: return 15u;
+      case Primitive::Type::kPrimInt: return 31u;
+      case Primitive::Type::kPrimLong: return 63u;
+      case Primitive::Type::kPrimFloat: return 128u;
+      case Primitive::Type::kPrimDouble: return 1024u;
+      case Primitive::Type::kPrimVoid: return 0u;
+    }
+  }
+
+  // Returns true if it is possible to widen type |from| to type |to|. Both |from| and
+  // |to| should be numeric primitive types.
+  static bool IsWidenable(Type from, Type to) {
+    if (!IsNumericType(from) || !IsNumericType(to)) {
+      // Widening is only applicable between numeric types.
+      return false;
+    }
+    if (IsSignedNumericType(from) && !IsSignedNumericType(to)) {
+      // Nowhere to store the sign bit in |to|.
+      return false;
+    }
+    if (BitsRequiredForLargestValue(from) > BitsRequiredForLargestValue(to)) {
+      // The from,to pair corresponds to a narrowing.
+      return false;
+    }
+    return true;
+  }
+
+  static bool Is64BitType(Type type) {
+    return type == kPrimLong || type == kPrimDouble;
+  }
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Primitive);
+};
+
+std::ostream& operator<<(std::ostream& os, Primitive::Type state);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_PRIMITIVE_H_

Bcore/src/main/cpp/dex/standard_dex_file.cc

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "standard_dex_file.h"
+
+#include "base/casts.h"
+#include "base/leb128.h"
+#include "code_item_accessors-inl.h"
+#include "dex_file-inl.h"
+
+namespace art_lkchan {
+
+const uint8_t StandardDexFile::kDexMagic[] = { 'd', 'e', 'x', '\n' };
+const uint8_t StandardDexFile::kDexMagicVersions[StandardDexFile::kNumDexVersions]
+                                                [StandardDexFile::kDexVersionLen] = {
+  {'0', '3', '5', '\0'},
+  // Dex version 036 skipped because of an old dalvik bug on some versions of android where dex
+  // files with that version number would erroneously be accepted and run.
+  {'0', '3', '7', '\0'},
+  // Dex version 038: Android "O" and beyond.
+  {'0', '3', '8', '\0'},
+  // Dex verion 039: Beyond Android "O".
+  {'0', '3', '9', '\0'},
+};
+
+void StandardDexFile::WriteMagic(uint8_t* magic) {
+  std::copy_n(kDexMagic, kDexMagicSize, magic);
+}
+
+void StandardDexFile::WriteCurrentVersion(uint8_t* magic) {
+  std::copy_n(kDexMagicVersions[StandardDexFile::kDexVersionLen - 1],
+              kDexVersionLen,
+              magic + kDexMagicSize);
+}
+
+bool StandardDexFile::IsMagicValid(const uint8_t* magic) {
+  return (memcmp(magic, kDexMagic, sizeof(kDexMagic)) == 0);
+}
+
+bool StandardDexFile::IsVersionValid(const uint8_t* magic) {
+  const uint8_t* version = &magic[sizeof(kDexMagic)];
+  for (uint32_t i = 0; i < kNumDexVersions; i++) {
+    if (memcmp(version, kDexMagicVersions[i], kDexVersionLen) == 0) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool StandardDexFile::IsMagicValid() const {
+  return IsMagicValid(header_->magic_);
+}
+
+bool StandardDexFile::IsVersionValid() const {
+  return IsVersionValid(header_->magic_);
+}
+
+bool StandardDexFile::SupportsDefaultMethods() const {
+  return GetDexVersion() >= DexFile::kDefaultMethodsVersion;
+}
+
+uint32_t StandardDexFile::GetCodeItemSize(const DexFile::CodeItem& item) const {
+  DCHECK(IsInDataSection(&item));
+  return reinterpret_cast<uintptr_t>(CodeItemDataAccessor(*this, &item).CodeItemDataEnd()) -
+      reinterpret_cast<uintptr_t>(&item);
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/standard_dex_file.h

@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_STANDARD_DEX_FILE_H_
+#define ART_LIBDEXFILE_DEX_STANDARD_DEX_FILE_H_
+
+#include <iosfwd>
+
+#include "dex_file.h"
+
+namespace art_lkchan {
+
+class OatDexFile;
+
+// Standard dex file. This is the format that is packaged in APKs and produced by tools.
+class StandardDexFile : public DexFile {
+ public:
+  class Header : public DexFile::Header {
+    // Same for now.
+  };
+
+  struct CodeItem : public DexFile::CodeItem {
+    static constexpr size_t kAlignment = 4;
+
+   private:
+    CodeItem() = default;
+
+    uint16_t registers_size_;            // the number of registers used by this code
+                                         //   (locals + parameters)
+    uint16_t ins_size_;                  // the number of words of incoming arguments to the method
+                                         //   that this code is for
+    uint16_t outs_size_;                 // the number of words of outgoing argument space required
+                                         //   by this code for method invocation
+    uint16_t tries_size_;                // the number of try_items for this instance. If non-zero,
+                                         //   then these appear as the tries array just after the
+                                         //   insns in this instance.
+    uint32_t debug_info_off_;            // Holds file offset to debug info stream.
+
+    uint32_t insns_size_in_code_units_;  // size of the insns array, in 2 byte code units
+    uint16_t insns_[1];                  // actual array of bytecode.
+
+    ART_FRIEND_TEST(CodeItemAccessorsTest, TestDexInstructionsAccessor);
+    friend class CodeItemDataAccessor;
+    friend class CodeItemDebugInfoAccessor;
+    friend class CodeItemInstructionAccessor;
+    friend class DexWriter;
+    friend class StandardDexFile;
+    DISALLOW_COPY_AND_ASSIGN(CodeItem);
+  };
+
+  // Write the standard dex specific magic.
+  static void WriteMagic(uint8_t* magic);
+
+  // Write the current version, note that the input is the address of the magic.
+  static void WriteCurrentVersion(uint8_t* magic);
+
+  static const uint8_t kDexMagic[kDexMagicSize];
+  static constexpr size_t kNumDexVersions = 4;
+  static const uint8_t kDexMagicVersions[kNumDexVersions][kDexVersionLen];
+
+  // Returns true if the byte string points to the magic value.
+  static bool IsMagicValid(const uint8_t* magic);
+  virtual bool IsMagicValid() const OVERRIDE;
+
+  // Returns true if the byte string after the magic is the correct value.
+  static bool IsVersionValid(const uint8_t* magic);
+  virtual bool IsVersionValid() const OVERRIDE;
+
+  virtual bool SupportsDefaultMethods() const OVERRIDE;
+
+  uint32_t GetCodeItemSize(const DexFile::CodeItem& item) const OVERRIDE;
+
+  virtual size_t GetDequickenedSize() const OVERRIDE {
+    return Size();
+  }
+
+ private:
+  StandardDexFile(const uint8_t* base,
+                  size_t size,
+                  const std::string& location,
+                  uint32_t location_checksum,
+                  const OatDexFile* oat_dex_file,
+                  std::unique_ptr<DexFileContainer> container)
+      : DexFile(base,
+                size,
+                /*data_begin*/ base,
+                /*data_size*/ size,
+                location,
+                location_checksum,
+                oat_dex_file,
+                std::move(container),
+                /*is_compact_dex*/ false) {}
+
+  friend class DexFileLoader;
+  friend class DexFileVerifierTest;
+
+  ART_FRIEND_TEST(ClassLinkerTest, RegisterDexFileName);  // for constructor
+  friend class OptimizingUnitTestHelper;  // for constructor
+
+  DISALLOW_COPY_AND_ASSIGN(StandardDexFile);
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_STANDARD_DEX_FILE_H_

Bcore/src/main/cpp/dex/string_reference.h

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_STRING_REFERENCE_H_
+#define ART_LIBDEXFILE_DEX_STRING_REFERENCE_H_
+
+#include <stdint.h>
+
+#include <android-base/logging.h>
+
+#include "dex/dex_file-inl.h"
+#include "dex/dex_file_reference.h"
+#include "dex/dex_file_types.h"
+#include "dex/utf-inl.h"
+
+namespace art_lkchan {
+
+// A string is located by its DexFile and the string_ids_ table index into that DexFile.
+class StringReference : public DexFileReference {
+ public:
+  StringReference(const DexFile* file, dex::StringIndex index)
+     : DexFileReference(file, index.index_) {}
+
+  dex::StringIndex StringIndex() const {
+    return dex::StringIndex(index);
+  }
+
+  const char* GetStringData() const {
+    return dex_file->GetStringData(dex_file->GetStringId(StringIndex()));
+  }
+};
+
+// Compare the actual referenced string values. Used for string reference deduplication.
+struct StringReferenceValueComparator {
+  bool operator()(const StringReference& sr1, const StringReference& sr2) const {
+    // Note that we want to deduplicate identical strings even if they are referenced
+    // by different dex files, so we need some (any) total ordering of strings, rather
+    // than references. However, the references should usually be from the same dex file,
+    // so we choose the dex file string ordering so that we can simply compare indexes
+    // and avoid the costly string comparison in the most common case.
+    if (sr1.dex_file == sr2.dex_file) {
+      // Use the string order enforced by the dex file verifier.
+      DCHECK_EQ(
+          sr1.index < sr2.index,
+          CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(sr1.GetStringData(),
+                                                                  sr2.GetStringData()) < 0);
+      return sr1.index < sr2.index;
+    } else {
+      // Cannot compare indexes, so do the string comparison.
+      return CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(sr1.GetStringData(),
+                                                                     sr2.GetStringData()) < 0;
+    }
+  }
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_STRING_REFERENCE_H_

Bcore/src/main/cpp/dex/test_dex_file_builder.h

@@ -0,0 +1,400 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_TEST_DEX_FILE_BUILDER_H_
+#define ART_LIBDEXFILE_DEX_TEST_DEX_FILE_BUILDER_H_
+
+#include <zlib.h>
+
+#include <cstring>
+#include <map>
+#include <set>
+#include <vector>
+
+#include <android-base/logging.h>
+
+#include "dex/dex_file_loader.h"
+#include "dex/standard_dex_file.h"
+
+namespace art_lkchan {
+
+class TestDexFileBuilder {
+ public:
+  TestDexFileBuilder()
+      : strings_(), types_(), fields_(), protos_(), dex_file_data_() {
+  }
+
+  void AddString(const std::string& str) {
+    CHECK(dex_file_data_.empty());
+    auto it = strings_.emplace(str, IdxAndDataOffset()).first;
+    CHECK_LT(it->first.length(), 128u);  // Don't allow multi-byte length in uleb128.
+  }
+
+  void AddType(const std::string& descriptor) {
+    CHECK(dex_file_data_.empty());
+    AddString(descriptor);
+    types_.emplace(descriptor, 0u);
+  }
+
+  void AddField(const std::string& class_descriptor, const std::string& type,
+                const std::string& name) {
+    CHECK(dex_file_data_.empty());
+    AddType(class_descriptor);
+    AddType(type);
+    AddString(name);
+    FieldKey key = { class_descriptor, type, name };
+    fields_.emplace(key, 0u);
+  }
+
+  void AddMethod(const std::string& class_descriptor, const std::string& signature,
+                 const std::string& name) {
+    CHECK(dex_file_data_.empty());
+    AddType(class_descriptor);
+    AddString(name);
+
+    ProtoKey proto_key = CreateProtoKey(signature);
+    AddString(proto_key.shorty);
+    AddType(proto_key.return_type);
+    for (const auto& arg_type : proto_key.args) {
+      AddType(arg_type);
+    }
+    auto it = protos_.emplace(proto_key, IdxAndDataOffset()).first;
+    const ProtoKey* proto = &it->first;  // Valid as long as the element remains in protos_.
+
+    MethodKey method_key = {
+        class_descriptor, name, proto
+    };
+    methods_.emplace(method_key, 0u);
+  }
+
+  // NOTE: The builder holds the actual data, so it must live as long as the dex file.
+  std::unique_ptr<const DexFile> Build(const std::string& dex_location) {
+    CHECK(dex_file_data_.empty());
+    union {
+      uint8_t data[sizeof(DexFile::Header)];
+      uint64_t force_alignment;
+    } header_data;
+    std::memset(header_data.data, 0, sizeof(header_data.data));
+    DexFile::Header* header = reinterpret_cast<DexFile::Header*>(&header_data.data);
+    std::copy_n(StandardDexFile::kDexMagic, 4u, header->magic_);
+    std::copy_n(StandardDexFile::kDexMagicVersions[0], 4u, header->magic_ + 4u);
+    header->header_size_ = sizeof(DexFile::Header);
+    header->endian_tag_ = DexFile::kDexEndianConstant;
+    header->link_size_ = 0u;  // Unused.
+    header->link_off_ = 0u;  // Unused.
+    header->map_off_ = 0u;  // Unused. TODO: This is wrong. Dex files created by this builder
+                            //               cannot be verified. b/26808512
+
+    uint32_t data_section_size = 0u;
+
+    uint32_t string_ids_offset = sizeof(DexFile::Header);
+    uint32_t string_idx = 0u;
+    for (auto& entry : strings_) {
+      entry.second.idx = string_idx;
+      string_idx += 1u;
+      entry.second.data_offset = data_section_size;
+      data_section_size += entry.first.length() + 1u /* length */ + 1u /* null-terminator */;
+    }
+    header->string_ids_size_ = strings_.size();
+    header->string_ids_off_ = strings_.empty() ? 0u : string_ids_offset;
+
+    uint32_t type_ids_offset = string_ids_offset + strings_.size() * sizeof(DexFile::StringId);
+    uint32_t type_idx = 0u;
+    for (auto& entry : types_) {
+      entry.second = type_idx;
+      type_idx += 1u;
+    }
+    header->type_ids_size_ = types_.size();
+    header->type_ids_off_ = types_.empty() ? 0u : type_ids_offset;
+
+    uint32_t proto_ids_offset = type_ids_offset + types_.size() * sizeof(DexFile::TypeId);
+    uint32_t proto_idx = 0u;
+    for (auto& entry : protos_) {
+      entry.second.idx = proto_idx;
+      proto_idx += 1u;
+      size_t num_args = entry.first.args.size();
+      if (num_args != 0u) {
+        entry.second.data_offset = RoundUp(data_section_size, 4u);
+        data_section_size = entry.second.data_offset + 4u + num_args * sizeof(DexFile::TypeItem);
+      } else {
+        entry.second.data_offset = 0u;
+      }
+    }
+    header->proto_ids_size_ = protos_.size();
+    header->proto_ids_off_ = protos_.empty() ? 0u : proto_ids_offset;
+
+    uint32_t field_ids_offset = proto_ids_offset + protos_.size() * sizeof(DexFile::ProtoId);
+    uint32_t field_idx = 0u;
+    for (auto& entry : fields_) {
+      entry.second = field_idx;
+      field_idx += 1u;
+    }
+    header->field_ids_size_ = fields_.size();
+    header->field_ids_off_ = fields_.empty() ? 0u : field_ids_offset;
+
+    uint32_t method_ids_offset = field_ids_offset + fields_.size() * sizeof(DexFile::FieldId);
+    uint32_t method_idx = 0u;
+    for (auto& entry : methods_) {
+      entry.second = method_idx;
+      method_idx += 1u;
+    }
+    header->method_ids_size_ = methods_.size();
+    header->method_ids_off_ = methods_.empty() ? 0u : method_ids_offset;
+
+    // No class defs.
+    header->class_defs_size_ = 0u;
+    header->class_defs_off_ = 0u;
+
+    uint32_t data_section_offset = method_ids_offset + methods_.size() * sizeof(DexFile::MethodId);
+    header->data_size_ = data_section_size;
+    header->data_off_ = (data_section_size != 0u) ? data_section_offset : 0u;
+
+    uint32_t total_size = data_section_offset + data_section_size;
+
+    dex_file_data_.resize(total_size);
+
+    for (const auto& entry : strings_) {
+      CHECK_LT(entry.first.size(), 128u);
+      uint32_t raw_offset = data_section_offset + entry.second.data_offset;
+      dex_file_data_[raw_offset] = static_cast<uint8_t>(entry.first.size());
+      std::memcpy(&dex_file_data_[raw_offset + 1], entry.first.c_str(), entry.first.size() + 1);
+      Write32(string_ids_offset + entry.second.idx * sizeof(DexFile::StringId), raw_offset);
+    }
+
+    for (const auto& entry : types_) {
+      Write32(type_ids_offset + entry.second * sizeof(DexFile::TypeId), GetStringIdx(entry.first));
+      ++type_idx;
+    }
+
+    for (const auto& entry : protos_) {
+      size_t num_args = entry.first.args.size();
+      uint32_t type_list_offset =
+          (num_args != 0u) ? data_section_offset + entry.second.data_offset : 0u;
+      uint32_t raw_offset = proto_ids_offset + entry.second.idx * sizeof(DexFile::ProtoId);
+      Write32(raw_offset + 0u, GetStringIdx(entry.first.shorty));
+      Write16(raw_offset + 4u, GetTypeIdx(entry.first.return_type));
+      Write32(raw_offset + 8u, type_list_offset);
+      if (num_args != 0u) {
+        CHECK_NE(entry.second.data_offset, 0u);
+        Write32(type_list_offset, num_args);
+        for (size_t i = 0; i != num_args; ++i) {
+          Write16(type_list_offset + 4u + i * sizeof(DexFile::TypeItem),
+                  GetTypeIdx(entry.first.args[i]));
+        }
+      }
+    }
+
+    for (const auto& entry : fields_) {
+      uint32_t raw_offset = field_ids_offset + entry.second * sizeof(DexFile::FieldId);
+      Write16(raw_offset + 0u, GetTypeIdx(entry.first.class_descriptor));
+      Write16(raw_offset + 2u, GetTypeIdx(entry.first.type));
+      Write32(raw_offset + 4u, GetStringIdx(entry.first.name));
+    }
+
+    for (const auto& entry : methods_) {
+      uint32_t raw_offset = method_ids_offset + entry.second * sizeof(DexFile::MethodId);
+      Write16(raw_offset + 0u, GetTypeIdx(entry.first.class_descriptor));
+      auto it = protos_.find(*entry.first.proto);
+      CHECK(it != protos_.end());
+      Write16(raw_offset + 2u, it->second.idx);
+      Write32(raw_offset + 4u, GetStringIdx(entry.first.name));
+    }
+
+    // Leave signature as zeros.
+
+    header->file_size_ = dex_file_data_.size();
+
+    // Write the complete header early, as part of it needs to be checksummed.
+    std::memcpy(&dex_file_data_[0], header_data.data, sizeof(DexFile::Header));
+
+    // Checksum starts after the checksum field.
+    size_t skip = sizeof(header->magic_) + sizeof(header->checksum_);
+    header->checksum_ = adler32(adler32(0L, Z_NULL, 0),
+                                dex_file_data_.data() + skip,
+                                dex_file_data_.size() - skip);
+
+    // Write the complete header again, just simpler that way.
+    std::memcpy(&dex_file_data_[0], header_data.data, sizeof(DexFile::Header));
+
+    static constexpr bool kVerify = false;
+    static constexpr bool kVerifyChecksum = false;
+    std::string error_msg;
+    const DexFileLoader dex_file_loader;
+    std::unique_ptr<const DexFile> dex_file(dex_file_loader.Open(
+        &dex_file_data_[0],
+        dex_file_data_.size(),
+        dex_location,
+        0u,
+        nullptr,
+        kVerify,
+        kVerifyChecksum,
+        &error_msg));
+    CHECK(dex_file != nullptr) << error_msg;
+    return dex_file;
+  }
+
+  uint32_t GetStringIdx(const std::string& type) {
+    auto it = strings_.find(type);
+    CHECK(it != strings_.end());
+    return it->second.idx;
+  }
+
+  uint32_t GetTypeIdx(const std::string& type) {
+    auto it = types_.find(type);
+    CHECK(it != types_.end());
+    return it->second;
+  }
+
+  uint32_t GetFieldIdx(const std::string& class_descriptor, const std::string& type,
+                       const std::string& name) {
+    FieldKey key = { class_descriptor, type, name };
+    auto it = fields_.find(key);
+    CHECK(it != fields_.end());
+    return it->second;
+  }
+
+  uint32_t GetMethodIdx(const std::string& class_descriptor, const std::string& signature,
+                        const std::string& name) {
+    ProtoKey proto_key = CreateProtoKey(signature);
+    MethodKey method_key = { class_descriptor, name, &proto_key };
+    auto it = methods_.find(method_key);
+    CHECK(it != methods_.end());
+    return it->second;
+  }
+
+ private:
+  struct IdxAndDataOffset {
+    uint32_t idx;
+    uint32_t data_offset;
+  };
+
+  struct FieldKey {
+    const std::string class_descriptor;
+    const std::string type;
+    const std::string name;
+  };
+  struct FieldKeyComparator {
+    bool operator()(const FieldKey& lhs, const FieldKey& rhs) const {
+      if (lhs.class_descriptor != rhs.class_descriptor) {
+        return lhs.class_descriptor < rhs.class_descriptor;
+      }
+      if (lhs.name != rhs.name) {
+        return lhs.name < rhs.name;
+      }
+      return lhs.type < rhs.type;
+    }
+  };
+
+  struct ProtoKey {
+    std::string shorty;
+    std::string return_type;
+    std::vector<std::string> args;
+  };
+  struct ProtoKeyComparator {
+    bool operator()(const ProtoKey& lhs, const ProtoKey& rhs) const {
+      if (lhs.return_type != rhs.return_type) {
+        return lhs.return_type < rhs.return_type;
+      }
+      size_t min_args = std::min(lhs.args.size(), rhs.args.size());
+      for (size_t i = 0; i != min_args; ++i) {
+        if (lhs.args[i] != rhs.args[i]) {
+          return lhs.args[i] < rhs.args[i];
+        }
+      }
+      return lhs.args.size() < rhs.args.size();
+    }
+  };
+
+  struct MethodKey {
+    std::string class_descriptor;
+    std::string name;
+    const ProtoKey* proto;
+  };
+  struct MethodKeyComparator {
+    bool operator()(const MethodKey& lhs, const MethodKey& rhs) const {
+      if (lhs.class_descriptor != rhs.class_descriptor) {
+        return lhs.class_descriptor < rhs.class_descriptor;
+      }
+      if (lhs.name != rhs.name) {
+        return lhs.name < rhs.name;
+      }
+      return ProtoKeyComparator()(*lhs.proto, *rhs.proto);
+    }
+  };
+
+  ProtoKey CreateProtoKey(const std::string& signature) {
+    CHECK_EQ(signature[0], '(');
+    const char* args = signature.c_str() + 1;
+    const char* args_end = std::strchr(args, ')');
+    CHECK(args_end != nullptr);
+    const char* return_type = args_end + 1;
+
+    ProtoKey key = {
+        std::string() + ((*return_type == '[') ? 'L' : *return_type),
+        return_type,
+        std::vector<std::string>()
+    };
+    while (args != args_end) {
+      key.shorty += (*args == '[') ? 'L' : *args;
+      const char* arg_start = args;
+      while (*args == '[') {
+        ++args;
+      }
+      if (*args == 'L') {
+        do {
+          ++args;
+          CHECK_NE(args, args_end);
+        } while (*args != ';');
+      }
+      ++args;
+      key.args.emplace_back(arg_start, args);
+    }
+    return key;
+  }
+
+  void Write32(size_t offset, uint32_t value) {
+    CHECK_LE(offset + 4u, dex_file_data_.size());
+    CHECK_EQ(dex_file_data_[offset + 0], 0u);
+    CHECK_EQ(dex_file_data_[offset + 1], 0u);
+    CHECK_EQ(dex_file_data_[offset + 2], 0u);
+    CHECK_EQ(dex_file_data_[offset + 3], 0u);
+    dex_file_data_[offset + 0] = static_cast<uint8_t>(value >> 0);
+    dex_file_data_[offset + 1] = static_cast<uint8_t>(value >> 8);
+    dex_file_data_[offset + 2] = static_cast<uint8_t>(value >> 16);
+    dex_file_data_[offset + 3] = static_cast<uint8_t>(value >> 24);
+  }
+
+  void Write16(size_t offset, uint32_t value) {
+    CHECK_LE(value, 0xffffu);
+    CHECK_LE(offset + 2u, dex_file_data_.size());
+    CHECK_EQ(dex_file_data_[offset + 0], 0u);
+    CHECK_EQ(dex_file_data_[offset + 1], 0u);
+    dex_file_data_[offset + 0] = static_cast<uint8_t>(value >> 0);
+    dex_file_data_[offset + 1] = static_cast<uint8_t>(value >> 8);
+  }
+
+  std::map<std::string, IdxAndDataOffset> strings_;
+  std::map<std::string, uint32_t> types_;
+  std::map<FieldKey, uint32_t, FieldKeyComparator> fields_;
+  std::map<ProtoKey, IdxAndDataOffset, ProtoKeyComparator> protos_;
+  std::map<MethodKey, uint32_t, MethodKeyComparator> methods_;
+
+  std::vector<uint8_t> dex_file_data_;
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_TEST_DEX_FILE_BUILDER_H_

Bcore/src/main/cpp/dex/type_reference.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_TYPE_REFERENCE_H_
+#define ART_LIBDEXFILE_DEX_TYPE_REFERENCE_H_
+
+#include <stdint.h>
+
+#include <android-base/logging.h>
+
+#include "dex/dex_file_types.h"
+#include "dex/string_reference.h"
+
+namespace art_lkchan {
+
+class DexFile;
+
+// A type is located by its DexFile and the string_ids_ table index into that DexFile.
+class TypeReference : public DexFileReference {
+ public:
+  TypeReference(const DexFile* file, dex::TypeIndex index)
+      : DexFileReference(file, index.index_) {}
+
+  dex::TypeIndex TypeIndex() const {
+    return dex::TypeIndex(index);
+  }
+};
+
+// Compare the actual referenced type names. Used for type reference deduplication.
+struct TypeReferenceValueComparator {
+  bool operator()(const TypeReference& tr1, const TypeReference& tr2) const {
+    // Note that we want to deduplicate identical boot image types even if they are
+    // referenced by different dex files, so we simply compare the descriptors.
+    StringReference sr1(tr1.dex_file, tr1.dex_file->GetTypeId(tr1.TypeIndex()).descriptor_idx_);
+    StringReference sr2(tr2.dex_file, tr2.dex_file->GetTypeId(tr2.TypeIndex()).descriptor_idx_);
+    return StringReferenceValueComparator()(sr1, sr2);
+  }
+};
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_TYPE_REFERENCE_H_

Bcore/src/main/cpp/dex/utf-inl.h

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_UTF_INL_H_
+#define ART_LIBDEXFILE_DEX_UTF_INL_H_
+
+#include "utf.h"
+
+namespace art_lkchan {
+
+inline uint16_t GetTrailingUtf16Char(uint32_t maybe_pair) {
+  return static_cast<uint16_t>(maybe_pair >> 16);
+}
+
+inline uint16_t GetLeadingUtf16Char(uint32_t maybe_pair) {
+  return static_cast<uint16_t>(maybe_pair & 0x0000FFFF);
+}
+
+inline uint32_t GetUtf16FromUtf8(const char** utf8_data_in) {
+  const uint8_t one = *(*utf8_data_in)++;
+  if ((one & 0x80) == 0) {
+    // one-byte encoding
+    return one;
+  }
+
+  const uint8_t two = *(*utf8_data_in)++;
+  if ((one & 0x20) == 0) {
+    // two-byte encoding
+    return ((one & 0x1f) << 6) | (two & 0x3f);
+  }
+
+  const uint8_t three = *(*utf8_data_in)++;
+  if ((one & 0x10) == 0) {
+    return ((one & 0x0f) << 12) | ((two & 0x3f) << 6) | (three & 0x3f);
+  }
+
+  // Four byte encodings need special handling. We'll have
+  // to convert them into a surrogate pair.
+  const uint8_t four = *(*utf8_data_in)++;
+
+  // Since this is a 4 byte UTF-8 sequence, it will lie between
+  // U+10000 and U+1FFFFF.
+  //
+  // TODO: What do we do about values in (U+10FFFF, U+1FFFFF) ? The
+  // spec says they're invalid but nobody appears to check for them.
+  const uint32_t code_point = ((one & 0x0f) << 18) | ((two & 0x3f) << 12)
+      | ((three & 0x3f) << 6) | (four & 0x3f);
+
+  uint32_t surrogate_pair = 0;
+  // Step two: Write out the high (leading) surrogate to the bottom 16 bits
+  // of the of the 32 bit type.
+  surrogate_pair |= ((code_point >> 10) + 0xd7c0) & 0xffff;
+  // Step three : Write out the low (trailing) surrogate to the top 16 bits.
+  surrogate_pair |= ((code_point & 0x03ff) + 0xdc00) << 16;
+
+  return surrogate_pair;
+}
+
+inline int CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(const char* utf8_1,
+                                                                   const char* utf8_2) {
+  uint32_t c1, c2;
+  do {
+    c1 = *utf8_1;
+    c2 = *utf8_2;
+    // Did we reach a terminating character?
+    if (c1 == 0) {
+      return (c2 == 0) ? 0 : -1;
+    } else if (c2 == 0) {
+      return 1;
+    }
+
+    c1 = GetUtf16FromUtf8(&utf8_1);
+    c2 = GetUtf16FromUtf8(&utf8_2);
+  } while (c1 == c2);
+
+  const uint32_t leading_surrogate_diff = GetLeadingUtf16Char(c1) - GetLeadingUtf16Char(c2);
+  if (leading_surrogate_diff != 0) {
+      return static_cast<int>(leading_surrogate_diff);
+  }
+
+  return GetTrailingUtf16Char(c1) - GetTrailingUtf16Char(c2);
+}
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_UTF_INL_H_

Bcore/src/main/cpp/dex/utf.cc

@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "utf.h"
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+
+#include "base/casts.h"
+#include "utf-inl.h"
+
+namespace art_lkchan {
+
+using android_lkchan::base::StringAppendF;
+using android_lkchan::base::StringPrintf;
+
+// This is used only from debugger and test code.
+size_t CountModifiedUtf8Chars(const char* utf8) {
+  return CountModifiedUtf8Chars(utf8, strlen(utf8));
+}
+
+/*
+ * This does not validate UTF8 rules (nor did older code). But it gets the right answer
+ * for valid UTF-8 and that's fine because it's used only to size a buffer for later
+ * conversion.
+ *
+ * Modified UTF-8 consists of a series of bytes up to 21 bit Unicode code points as follows:
+ * U+0001  - U+007F   0xxxxxxx
+ * U+0080  - U+07FF   110xxxxx 10xxxxxx
+ * U+0800  - U+FFFF   1110xxxx 10xxxxxx 10xxxxxx
+ * U+10000 - U+1FFFFF 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ *
+ * U+0000 is encoded using the 2nd form to avoid nulls inside strings (this differs from
+ * standard UTF-8).
+ * The four byte encoding converts to two utf16 characters.
+ */
+size_t CountModifiedUtf8Chars(const char* utf8, size_t byte_count) {
+  DCHECK_LE(byte_count, strlen(utf8));
+  size_t len = 0;
+  const char* end = utf8 + byte_count;
+  for (; utf8 < end; ++utf8) {
+    int ic = *utf8;
+    len++;
+    if (LIKELY((ic & 0x80) == 0)) {
+      // One-byte encoding.
+      continue;
+    }
+    // Two- or three-byte encoding.
+    utf8++;
+    if ((ic & 0x20) == 0) {
+      // Two-byte encoding.
+      continue;
+    }
+    utf8++;
+    if ((ic & 0x10) == 0) {
+      // Three-byte encoding.
+      continue;
+    }
+
+    // Four-byte encoding: needs to be converted into a surrogate
+    // pair.
+    utf8++;
+    len++;
+  }
+  return len;
+}
+
+// This is used only from debugger and test code.
+void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_data_out, const char* utf8_data_in) {
+  while (*utf8_data_in != '\0') {
+    const uint32_t ch = GetUtf16FromUtf8(&utf8_data_in);
+    const uint16_t leading = GetLeadingUtf16Char(ch);
+    const uint16_t trailing = GetTrailingUtf16Char(ch);
+
+    *utf16_data_out++ = leading;
+    if (trailing != 0) {
+      *utf16_data_out++ = trailing;
+    }
+  }
+}
+
+void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_data_out, size_t out_chars,
+                                const char* utf8_data_in, size_t in_bytes) {
+  const char *in_start = utf8_data_in;
+  const char *in_end = utf8_data_in + in_bytes;
+  uint16_t *out_p = utf16_data_out;
+
+  if (LIKELY(out_chars == in_bytes)) {
+    // Common case where all characters are ASCII.
+    for (const char *p = in_start; p < in_end;) {
+      // Safe even if char is signed because ASCII characters always have
+      // the high bit cleared.
+      *out_p++ = dchecked_integral_cast<uint16_t>(*p++);
+    }
+    return;
+  }
+
+  // String contains non-ASCII characters.
+  for (const char *p = in_start; p < in_end;) {
+    const uint32_t ch = GetUtf16FromUtf8(&p);
+    const uint16_t leading = GetLeadingUtf16Char(ch);
+    const uint16_t trailing = GetTrailingUtf16Char(ch);
+
+    *out_p++ = leading;
+    if (trailing != 0) {
+      *out_p++ = trailing;
+    }
+  }
+}
+
+void ConvertUtf16ToModifiedUtf8(char* utf8_out, size_t byte_count,
+                                const uint16_t* utf16_in, size_t char_count) {
+  if (LIKELY(byte_count == char_count)) {
+    // Common case where all characters are ASCII.
+    const uint16_t *utf16_end = utf16_in + char_count;
+    for (const uint16_t *p = utf16_in; p < utf16_end;) {
+      *utf8_out++ = dchecked_integral_cast<char>(*p++);
+    }
+    return;
+  }
+
+  // String contains non-ASCII characters.
+  while (char_count--) {
+    const uint16_t ch = *utf16_in++;
+    if (ch > 0 && ch <= 0x7f) {
+      *utf8_out++ = ch;
+    } else {
+      // Char_count == 0 here implies we've encountered an unpaired
+      // surrogate and we have no choice but to encode it as 3-byte UTF
+      // sequence. Note that unpaired surrogates can occur as a part of
+      // "normal" operation.
+      if ((ch >= 0xd800 && ch <= 0xdbff) && (char_count > 0)) {
+        const uint16_t ch2 = *utf16_in;
+
+        // Check if the other half of the pair is within the expected
+        // range. If it isn't, we will have to emit both "halves" as
+        // separate 3 byte sequences.
+        if (ch2 >= 0xdc00 && ch2 <= 0xdfff) {
+          utf16_in++;
+          char_count--;
+          const uint32_t code_point = (ch << 10) + ch2 - 0x035fdc00;
+          *utf8_out++ = (code_point >> 18) | 0xf0;
+          *utf8_out++ = ((code_point >> 12) & 0x3f) | 0x80;
+          *utf8_out++ = ((code_point >> 6) & 0x3f) | 0x80;
+          *utf8_out++ = (code_point & 0x3f) | 0x80;
+          continue;
+        }
+      }
+
+      if (ch > 0x07ff) {
+        // Three byte encoding.
+        *utf8_out++ = (ch >> 12) | 0xe0;
+        *utf8_out++ = ((ch >> 6) & 0x3f) | 0x80;
+        *utf8_out++ = (ch & 0x3f) | 0x80;
+      } else /*(ch > 0x7f || ch == 0)*/ {
+        // Two byte encoding.
+        *utf8_out++ = (ch >> 6) | 0xc0;
+        *utf8_out++ = (ch & 0x3f) | 0x80;
+      }
+    }
+  }
+}
+
+int32_t ComputeUtf16HashFromModifiedUtf8(const char* utf8, size_t utf16_length) {
+  uint32_t hash = 0;
+  while (utf16_length != 0u) {
+    const uint32_t pair = GetUtf16FromUtf8(&utf8);
+    const uint16_t first = GetLeadingUtf16Char(pair);
+    hash = hash * 31 + first;
+    --utf16_length;
+    const uint16_t second = GetTrailingUtf16Char(pair);
+    if (second != 0) {
+      hash = hash * 31 + second;
+      DCHECK_NE(utf16_length, 0u);
+      --utf16_length;
+    }
+  }
+  return static_cast<int32_t>(hash);
+}
+
+uint32_t ComputeModifiedUtf8Hash(const char* chars) {
+  uint32_t hash = 0;
+  while (*chars != '\0') {
+    hash = hash * 31 + *chars++;
+  }
+  return static_cast<int32_t>(hash);
+}
+
+int CompareModifiedUtf8ToUtf16AsCodePointValues(const char* utf8, const uint16_t* utf16,
+                                                size_t utf16_length) {
+  for (;;) {
+    if (*utf8 == '\0') {
+      return (utf16_length == 0) ? 0 : -1;
+    } else if (utf16_length == 0) {
+      return 1;
+    }
+
+    const uint32_t pair = GetUtf16FromUtf8(&utf8);
+
+    // First compare the leading utf16 char.
+    const uint16_t lhs = GetLeadingUtf16Char(pair);
+    const uint16_t rhs = *utf16++;
+    --utf16_length;
+    if (lhs != rhs) {
+      return lhs > rhs ? 1 : -1;
+    }
+
+    // Then compare the trailing utf16 char. First check if there
+    // are any characters left to consume.
+    const uint16_t lhs2 = GetTrailingUtf16Char(pair);
+    if (lhs2 != 0) {
+      if (utf16_length == 0) {
+        return 1;
+      }
+
+      const uint16_t rhs2 = *utf16++;
+      --utf16_length;
+      if (lhs2 != rhs2) {
+        return lhs2 > rhs2 ? 1 : -1;
+      }
+    }
+  }
+}
+
+size_t CountUtf8Bytes(const uint16_t* chars, size_t char_count) {
+  size_t result = 0;
+  const uint16_t *end = chars + char_count;
+  while (chars < end) {
+    const uint16_t ch = *chars++;
+    if (LIKELY(ch != 0 && ch < 0x80)) {
+      result++;
+      continue;
+    }
+    if (ch < 0x800) {
+      result += 2;
+      continue;
+    }
+    if (ch >= 0xd800 && ch < 0xdc00) {
+      if (chars < end) {
+        const uint16_t ch2 = *chars;
+        // If we find a properly paired surrogate, we emit it as a 4 byte
+        // UTF sequence. If we find an unpaired leading or trailing surrogate,
+        // we emit it as a 3 byte sequence like would have done earlier.
+        if (ch2 >= 0xdc00 && ch2 < 0xe000) {
+          chars++;
+          result += 4;
+          continue;
+        }
+      }
+    }
+    result += 3;
+  }
+  return result;
+}
+
+static inline constexpr bool NeedsEscaping(uint16_t ch) {
+  return (ch < ' ' || ch > '~');
+}
+
+std::string PrintableChar(uint16_t ch) {
+  std::string result;
+  result += '\'';
+  if (NeedsEscaping(ch)) {
+    StringAppendF(&result, "\\u%04x", ch);
+  } else {
+    result += static_cast<std::string::value_type>(ch);
+  }
+  result += '\'';
+  return result;
+}
+
+std::string PrintableString(const char* utf) {
+  std::string result;
+  result += '"';
+  const char* p = utf;
+  size_t char_count = CountModifiedUtf8Chars(p);
+  for (size_t i = 0; i < char_count; ++i) {
+    uint32_t ch = GetUtf16FromUtf8(&p);
+    if (ch == '\\') {
+      result += "\\\\";
+    } else if (ch == '\n') {
+      result += "\\n";
+    } else if (ch == '\r') {
+      result += "\\r";
+    } else if (ch == '\t') {
+      result += "\\t";
+    } else {
+      const uint16_t leading = GetLeadingUtf16Char(ch);
+
+      if (NeedsEscaping(leading)) {
+        StringAppendF(&result, "\\u%04x", leading);
+      } else {
+        result += static_cast<std::string::value_type>(leading);
+      }
+
+      const uint32_t trailing = GetTrailingUtf16Char(ch);
+      if (trailing != 0) {
+        // All high surrogates will need escaping.
+        StringAppendF(&result, "\\u%04x", trailing);
+      }
+    }
+  }
+  result += '"';
+  return result;
+}
+
+}  // namespace art_lkchan

Bcore/src/main/cpp/dex/utf.h

@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBDEXFILE_DEX_UTF_H_
+#define ART_LIBDEXFILE_DEX_UTF_H_
+
+#include "base/macros.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <string>
+
+/*
+ * All UTF-8 in art is actually modified UTF-8. Mostly, this distinction
+ * doesn't matter.
+ *
+ * See http://en.wikipedia.org/wiki/UTF-8#Modified_UTF-8 for the details.
+ */
+namespace art_lkchan {
+
+/*
+ * Returns the number of UTF-16 characters in the given modified UTF-8 string.
+ */
+size_t CountModifiedUtf8Chars(const char* utf8);
+size_t CountModifiedUtf8Chars(const char* utf8, size_t byte_count);
+
+/*
+ * Returns the number of modified UTF-8 bytes needed to represent the given
+ * UTF-16 string.
+ */
+size_t CountUtf8Bytes(const uint16_t* chars, size_t char_count);
+
+/*
+ * Convert from Modified UTF-8 to UTF-16.
+ */
+void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_out, const char* utf8_in);
+void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_out, size_t out_chars,
+                                const char* utf8_in, size_t in_bytes);
+
+/*
+ * Compare two modified UTF-8 strings as UTF-16 code point values in a non-locale sensitive manner
+ */
+ALWAYS_INLINE int CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(const char* utf8_1,
+                                                                          const char* utf8_2);
+
+/*
+ * Compare a null-terminated modified UTF-8 string with a UTF-16 string (not null-terminated)
+ * as code point values in a non-locale sensitive manner.
+ */
+int CompareModifiedUtf8ToUtf16AsCodePointValues(const char* utf8, const uint16_t* utf16,
+                                                size_t utf16_length);
+
+/*
+ * Convert from UTF-16 to Modified UTF-8. Note that the output is _not_
+ * NUL-terminated. You probably need to call CountUtf8Bytes before calling
+ * this anyway, so if you want a NUL-terminated string, you know where to
+ * put the NUL byte.
+ */
+void ConvertUtf16ToModifiedUtf8(char* utf8_out, size_t byte_count,
+                                const uint16_t* utf16_in, size_t char_count);
+
+/*
+ * The java.lang.String hashCode() algorithm.
+ */
+template<typename MemoryType>
+int32_t ComputeUtf16Hash(const MemoryType* chars, size_t char_count) {
+  uint32_t hash = 0;
+  while (char_count--) {
+    hash = hash * 31 + *chars++;
+  }
+  return static_cast<int32_t>(hash);
+}
+
+int32_t ComputeUtf16HashFromModifiedUtf8(const char* utf8, size_t utf16_length);
+
+// Compute a hash code of a modified UTF-8 string. Not the standard java hash since it returns a
+// uint32_t and hashes individual chars instead of codepoint words.
+uint32_t ComputeModifiedUtf8Hash(const char* chars);
+
+/*
+ * Retrieve the next UTF-16 character or surrogate pair from a UTF-8 string.
+ * single byte, 2-byte and 3-byte UTF-8 sequences result in a single UTF-16
+ * character (possibly one half of a surrogate) whereas 4-byte UTF-8 sequences
+ * result in a surrogate pair. Use GetLeadingUtf16Char and GetTrailingUtf16Char
+ * to process the return value of this function.
+ *
+ * Advances "*utf8_data_in" to the start of the next character.
+ *
+ * WARNING: If a string is corrupted by dropping a '\0' in the middle
+ * of a multi byte sequence, you can end up overrunning the buffer with
+ * reads (and possibly with the writes if the length was computed and
+ * cached before the damage). For performance reasons, this function
+ * assumes that the string being parsed is known to be valid (e.g., by
+ * already being verified). Most strings we process here are coming
+ * out of dex files or other internal translations, so the only real
+ * risk comes from the JNI NewStringUTF call.
+ */
+uint32_t GetUtf16FromUtf8(const char** utf8_data_in);
+
+/**
+ * Gets the leading UTF-16 character from a surrogate pair, or the sole
+ * UTF-16 character from the return value of GetUtf16FromUtf8.
+ */
+ALWAYS_INLINE uint16_t GetLeadingUtf16Char(uint32_t maybe_pair);
+
+/**
+ * Gets the trailing UTF-16 character from a surrogate pair, or 0 otherwise
+ * from the return value of GetUtf16FromUtf8.
+ */
+ALWAYS_INLINE uint16_t GetTrailingUtf16Char(uint32_t maybe_pair);
+
+// Returns a printable (escaped) version of a character.
+std::string PrintableChar(uint16_t ch);
+
+// Returns an ASCII string corresponding to the given UTF-8 string.
+// Java escapes are used for non-ASCII characters.
+std::string PrintableString(const char* utf8);
+
+}  // namespace art_lkchan
+
+#endif  // ART_LIBDEXFILE_DEX_UTF_H_

Bcore/src/main/cpp/hook/BaseHook.h

@@ -6,7 +6,7 @@
 #define VIRTUALM_BASEHOOK_H
 
 #include <jni.h>
-#include <Log.h>
+#include <utils/Log.h>
 
 class BaseHook {
 public:

Bcore/src/main/cpp/hook/ProcessHook.cpp

@@ -0,0 +1,37 @@
+//
+// Created by Milk on 2021/6/6.
+//
+
+#include <sys/types.h>
+#include "ProcessHook.h"
+#import "jniHook/JniHook.h"
+#import "utils/Log.h"
+#import "xhook/xhook.h"
+
+HOOK_JNI(void, sendSignal, JNIEnv *env, jobject obj, jint pid, jint signal) {
+    ALOGE("hooked sendSignal");
+}
+
+HOOK_JNI(void, sendSignalQuiet, JNIEnv *env, jobject obj, jint pid, jint signal) {
+    ALOGE("hooked sendSignalQuiet");
+}
+
+HOOK_JNI(jint, killProcessGroup, JNIEnv *env, jobject obj, jint uid, jint pid) {
+    ALOGE("hooked killProcessGroup");
+    return 0;
+}
+
+void ProcessHook::init(JNIEnv *env) {
+    const char *className = "android/os/Process";
+    JniHook::HookJniFun(env, className, "sendSignal", "(II)V",
+                        (void *) new_sendSignal,
+                        (void **) (&orig_sendSignal), true);
+
+    JniHook::HookJniFun(env, className, "sendSignalQuiet", "(II)V",
+                        (void *) new_sendSignalQuiet,
+                        (void **) (&orig_sendSignalQuiet), true);
+
+    JniHook::HookJniFun(env, className, "killProcessGroup", "(II)I",
+                        (void *) new_killProcessGroup,
+                        (void **) (&orig_killProcessGroup), true);
+}

Bcore/src/main/cpp/hook/ProcessHook.h

@@ -0,0 +1,15 @@
+//
+// Created by Milk on 2021/6/6.
+//
+
+#ifndef BLACKDEX_PROCESSHOOK_H
+#define BLACKDEX_PROCESSHOOK_H
+#include "BaseHook.h"
+
+class ProcessHook : public BaseHook {
+public:
+    static void init(JNIEnv *env);
+};
+
+
+#endif //BLACKDEX_PROCESSHOOK_H

Bcore/src/main/cpp/hook/UnixFileSystemHook.cpp

@@ -4,8 +4,7 @@
 
 #include <IO.h>
 #include "UnixFileSystemHook.h"
-#import "JniHook/JniHook.h"
-#include "BaseHook.h"
+#import "jniHook/JniHook.h"
 
 /*
  * Class:     java_io_UnixFileSystem

Bcore/src/main/cpp/hook/VMClassLoaderHook.cpp

@@ -8,7 +8,7 @@
 
 #include <cstring>
 #include "VMClassLoaderHook.h"
-#import "JniHook/JniHook.h"
+#import "jniHook/jniHook.h"
 static bool hideXposedClass = false;
 
 HOOK_JNI(jobject, findLoadedClass, JNIEnv *env, jobject obj, jobject class_loader, jstring name) {