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Add hook for ToDexPc

This commit is contained in:
kotori0 2020-12-20 17:02:58 +08:00
parent ff2e519f20
commit 17b8a60b4b
1 changed files with 16 additions and 7 deletions
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23
edxp-core/src/main/cpp/main/include/art/runtime/art_method.h
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@ -26,6 +26,15 @@ namespace art {
return PrettyMethod(thiz, true); return PrettyMethod(thiz, true);
} }
CREATE_HOOK_STUB_ENTRIES(uint32_t, ToDexPc, void** frame, const uintptr_t pc, bool abort_on_failure) {
void* method = *frame;
if (LIKELY(edxp::isHooked(method))) {
LOGD("art_method::ToDexPc: Method %p is hooked, return kDexNoIndex", method);
return 0xFFFFFFFF; // kDexNoIndex
}
return ToDexPcBackup(frame, pc, abort_on_failure);
}
CREATE_HOOK_STUB_ENTRIES(void *, GetOatQuickMethodHeader, void *thiz, uintptr_t pc) { CREATE_HOOK_STUB_ENTRIES(void *, GetOatQuickMethodHeader, void *thiz, uintptr_t pc) {
// This is a partial copy from AOSP. We only touch them if they are hooked. // This is a partial copy from AOSP. We only touch them if they are hooked.
if (UNLIKELY(edxp::isHooked(thiz))) { if (UNLIKELY(edxp::isHooked(thiz))) {
@ -36,22 +45,22 @@ namespace art {
reinterpret_cast<char *>(original_ep) + oat_header_code_length_offset; reinterpret_cast<char *>(original_ep) + oat_header_code_length_offset;
uint32_t code_length = uint32_t code_length =
*reinterpret_cast<uint32_t *>(code_length_loc) & ~0x80000000; *reinterpret_cast<uint32_t *>(code_length_loc) & ~0x80000000;
LOGD("GetOatQuickMethodHeader: ArtMethod=%p (%s), isHooked=true, original_ep=0x%x, code_length=0x%x, pc=0x%x", LOGD("art_method::GetOatQuickMethodHeader: ArtMethod=%p (%s), isHooked=true, original_ep=0x%x, code_length=0x%x, pc=0x%x",
thiz, PrettyMethod(thiz).c_str(), original_ep, code_length, pc); thiz, PrettyMethod(thiz).c_str(), original_ep, code_length, pc);
if (original_ep <= pc && pc <= original_ep + code_length) if (original_ep <= pc && pc <= original_ep + code_length)
return reinterpret_cast<void *>(original_ep - oat_header_length); return reinterpret_cast<void *>(original_ep - oat_header_length);
// If PC is not in range, we mark it as not found. // If PC is not in range, we mark it as not found.
LOGD("GetOatQuickMethodHeader: PC not found in current method."); LOGD("art_method::GetOatQuickMethodHeader: PC not found in current method.");
return nullptr; return nullptr;
} else { } else {
LOGD("GetOatQuickMethodHeader: isHooked but not backup, fallback to system"); LOGD("art_method::GetOatQuickMethodHeader: isHooked but not backup, fallback to system");
} }
} }
return GetOatQuickMethodHeaderBackup(thiz, pc); return GetOatQuickMethodHeaderBackup(thiz, pc);
} }
static void Setup(void *handle, HookFunType hook_func) { static void Setup(void *handle, HookFunType hook_func) {
LOGD("Classlinker hook setup, handle=%p", handle); LOGD("art_method hook setup, handle=%p", handle);
int api_level = edxp::GetAndroidApiLevel(); int api_level = edxp::GetAndroidApiLevel();
switch (api_level) { switch (api_level) {
case __ANDROID_API_O__: case __ANDROID_API_O__:
@ -63,7 +72,7 @@ namespace art {
oat_header_code_length_offset = -4; oat_header_code_length_offset = -4;
break; break;
default: default:
LOGW("No valid offset in SDK %d for oatHeaderLen, using offset from Android R", LOGW("No valid offset in SDK %d for oat_header_length, using offset from Android R",
api_level); api_level);
[[fallthrough]]; [[fallthrough]];
case __ANDROID_API_Q__: case __ANDROID_API_Q__:
@ -79,8 +88,8 @@ namespace art {
HOOK_FUNC(GetOatQuickMethodHeader, "_ZN3art9ArtMethod23GetOatQuickMethodHeaderEj"); HOOK_FUNC(GetOatQuickMethodHeader, "_ZN3art9ArtMethod23GetOatQuickMethodHeaderEj");
} }
RETRIEVE_FUNC_SYMBOL(PrettyMethod, RETRIEVE_FUNC_SYMBOL(PrettyMethod, "_ZN3art9ArtMethod12PrettyMethodEb");
"_ZN3art9ArtMethod12PrettyMethodEb"); HOOK_FUNC(ToDexPc, "_ZNK3art20OatQuickMethodHeader7ToDexPcEPPNS_9ArtMethodEjb");
} }
} }
} }