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Make backup logic as a function

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This commit is contained in:
LoveSy 2024-08-06 23:38:32 +08:00
parent 68f8a63e8f
commit 897c70b74a
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2 changed files with 12 additions and 7 deletions
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11
lsplant/src/main/jni/art/runtime/art_method.cxx
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@ -155,6 +155,17 @@ public:
reinterpret_cast<uintptr_t>(this) + declaring_class_offset));
}
void BackupTo(ArtMethod *backup) {
SetNonCompilable();
// copy after setNonCompilable
backup->CopyFrom(this);
ClearFastInterpretFlag();
if (!backup->IsStatic()) backup->SetPrivate();
}
static art::ArtMethod *FromReflectedMethod(JNIEnv *env, jobject method) {
if (art_method_field) [[likely]] {
return reinterpret_cast<art::ArtMethod *>(

8
lsplant/src/main/jni/lsplant.cc
View File

@ -592,18 +592,12 @@ bool DoHook(ArtMethod *target, ArtMethod *hook, ArtMethod *backup) {
} else {
LOGV("Generated trampoline %p", entrypoint);
target->SetNonCompilable();
hook->SetNonCompilable();
// copy after setNonCompilable
backup->CopyFrom(target);
target->ClearFastInterpretFlag();
target->BackupTo(backup);
target->SetEntryPoint(entrypoint);
if (!backup->IsStatic()) backup->SetPrivate();
LOGV("Done hook: target(%p:0x%x) -> %p; backup(%p:0x%x) -> %p; hook(%p:0x%x) -> %p", target,
target->GetAccessFlags(), target->GetEntryPoint(), backup, backup->GetAccessFlags(),
backup->GetEntryPoint(), hook, hook->GetAccessFlags(), hook->GetEntryPoint());