android dex内存,[求助]Android ART 模式下 DEX 内存加载

2016-11-9 17:34

jmethodID mtd_mark = env->GetStaticMethodID(javaClass, "nativeMark", "()V");

if (!mtd_mark)

return -1;

size_t startAddress = (size_t) mtd_mark;

size_t targetAddress = (size_t) mark;

void* art_work_around_app_jni_bugs = ptr_art_work_around_app_jni_bugs();

//    if (art_work_around_app_jni_bugs) {

//        targetAddress = (size_t)art_work_around_app_jni_bugs;

//    }

int offset = 0;

bool found = false;

size_t addr = 0;

while (true) {

addr =  startAddress + offset;

if (addr == targetAddress) {

found = true;

break;

}

offset += 4;

if (offset >= 100) {

LOGW("Ops: Unable to find the jni function.");

break;

}

}

env->UnregisterNatives(javaClass);

env->DeleteLocalRef(javaClass);

if (found) {

if (!isArt) {

offset += (sizeof(int) + sizeof(void *));

}

LOGW("Hoho, Get the offset : %d.", offset);

return offset;

}

楼主，这个地方去获取本地函数和java函数的偏移一直报错，为什么不直接HookopenDexFile这个函数