C++ (Cpp) replaceAsm示例

示例#1

文件： xposed.cpp 项目： Jing-Xie/Xposed

bool xposedOnVmCreated(JNIEnv* env, const char* className) {
    if (!keepLoadingXposed)
        return false;
        
    startClassName = className;
        
    // disable some access checks
    char asmReturnTrue[] = { 0x01, 0x20, 0x70, 0x47 };
    replaceAsm((void*) &dvmCheckClassAccess,  asmReturnTrue, sizeof(asmReturnTrue));
    replaceAsm((void*) &dvmCheckFieldAccess,  asmReturnTrue, sizeof(asmReturnTrue));
    replaceAsm((void*) &dvmInSamePackage,     asmReturnTrue, sizeof(asmReturnTrue));
    if (access(XPOSED_DIR "do_not_hook_dvmCheckMethodAccess", F_OK) != 0)
        replaceAsm((void*) &dvmCheckMethodAccess, asmReturnTrue, sizeof(asmReturnTrue));

    xposedClass = env->FindClass(XPOSED_CLASS);
    xposedClass = reinterpret_cast<jclass>(env->NewGlobalRef(xposedClass));
    
    if (xposedClass == NULL) {
        ALOGE("Error while loading Xposed class '%s':\n", XPOSED_CLASS);
        dvmLogExceptionStackTrace();
        env->ExceptionClear();
        return false;
    }
    
    ALOGI("Found Xposed class '%s', now initializing\n", XPOSED_CLASS);
    register_de_robv_android_xposed_XposedBridge(env);
    register_android_content_res_XResources(env);
    return true;
}

示例#2

文件： xposed.cpp 项目： ShiningDrops/Xposed

static void patchReturnTrue(void* function) {
#ifdef __arm__
    char asmReturnTrueThumb[] = { 0x01, 0x20, 0x70, 0x47 };
    char asmReturnTrueArm[] = { 0x01, 0x00, 0xA0, 0xE3, 0x1E, 0xFF, 0x2F, 0xE1 };
    if ((int)function & 1)
        replaceAsm(function, asmReturnTrueThumb, sizeof(asmReturnTrueThumb));
    else
        replaceAsm(function, asmReturnTrueArm, sizeof(asmReturnTrueArm));
#else
    char asmReturnTrueX86[] = { 0x31, 0xC0, 0x40, 0xC3 };
    replaceAsm(function, asmReturnTrueX86, sizeof(asmReturnTrueX86));
#endif
}

示例#3

文件： xposed.cpp 项目： BurgerZ/Xposed

static void patchReturnTrue(uintptr_t function) {
#ifdef __arm__
	unsigned const char asmReturnTrueThumb[] = {0x01, 0x20, 0x70, 0x47};
	unsigned const char asmReturnTrueArm[] = {0x01, 0x00, 0xA0, 0xE3, 0x1E, 0xFF, 0x2F, 0xE1};
	if (function & 1)
	replaceAsm(function, asmReturnTrueThumb, sizeof(asmReturnTrueThumb));
	else
	replaceAsm(function, asmReturnTrueArm, sizeof(asmReturnTrueArm));
#else
	unsigned const char asmReturnTrueX86[] = { 0x31, 0xC0, 0x40, 0xC3 };
	replaceAsm(function, asmReturnTrueX86, sizeof(asmReturnTrueX86));
#endif
}

示例#4

文件： xposedtest.cpp 项目： likunkun/Xposed

int main(int argc, const char* const argv[]) {
    int result;
    
    result = asmReplaceTest();
    if (result != 123) {
        printf("ERROR: Result of first call is %d instead of 123\n", result);
        return 1;
    }
    
#ifdef __arm__
    unsigned const char asmReturn42[] = { 42, 0x20, 0x70, 0x47 };
#else
    unsigned const char asmReturn42[] = { 0xB8, 42, 0x00, 0x00, 0x00, 0xC3 };
#endif
    replaceAsm((void*) asmReplaceTest,  asmReturn42, sizeof(asmReturn42));
    
    result = asmReplaceTest();
    if (result != 42) {
        printf("ERROR: Result of second call is %d instead of 42\n", result);
        return 1;
    }
    
    printf("OK\n");
    return 0;
}

示例#5

文件： xposedtest.cpp 项目： Jing-Xie/Xposed

int main(int argc, const char* const argv[]) {
    int result;
    
    result = asmReplaceTest();
    if (result != 123) {
        printf("ERROR: Result of first call is %d instead of 123\n", result);
        return 1;
    }
    
    char asmReturn42[] = { 42, 0x20, 0x70, 0x47 };
    replaceAsm((void*) asmReplaceTest,  asmReturn42, sizeof(asmReturn42));
    
    result = asmReplaceTest();
    if (result != 42) {
        printf("ERROR: Result of second call is %d instead of 42\n", result);
        return 1;
    }
    
    printf("OK\n");
    return 0;
}