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/*
* 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.
*/
#include "callee_save_frame.h"
#include "instrumentation.h"
#include "mirror/art_method-inl.h"
#include "mirror/object-inl.h"
#include "runtime.h"
#include "thread-inl.h"
namespace art {
extern "C" const void* artInstrumentationMethodEntryFromCode(mirror::ArtMethod* method,
mirror::Object* this_object,
Thread* self,
mirror::ArtMethod** sp,
uintptr_t lr)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsAndArgs);
instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
const void* result = instrumentation->GetQuickCodeFor(method);
DCHECK(result != GetQuickToInterpreterBridgeTrampoline(Runtime::Current()->GetClassLinker()));
bool interpreter_entry = (result == GetQuickToInterpreterBridge());
instrumentation->PushInstrumentationStackFrame(self, method->IsStatic() ? NULL : this_object,
method, lr, interpreter_entry);
CHECK(result != NULL) << PrettyMethod(method);
return result;
}
extern "C" uint64_t artInstrumentationMethodExitFromCode(Thread* self, mirror::ArtMethod** sp,
uint64_t gpr_result, uint64_t fpr_result)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
// TODO: use FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly) not the hand inlined below.
// We use the hand inline version to ensure the return_pc is assigned before verifying the
// stack.
// Be aware the store below may well stomp on an incoming argument.
Locks::mutator_lock_->AssertSharedHeld(self);
mirror::ArtMethod* callee_save = Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsOnly);
*sp = callee_save;
uintptr_t* return_pc = reinterpret_cast<uintptr_t*>(reinterpret_cast<byte*>(sp) +
callee_save->GetReturnPcOffsetInBytes());
CHECK_EQ(*return_pc, 0U);
self->SetTopOfStack(sp, 0);
self->VerifyStack();
instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
uint64_t return_or_deoptimize_pc = instrumentation->PopInstrumentationStackFrame(self, return_pc,
gpr_result,
fpr_result);
self->VerifyStack();
return return_or_deoptimize_pc;
}
} // namespace art
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