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126 lines
5.0 KiB
126 lines
5.0 KiB
4 months ago
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "runtime_intrinsics.h"
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#include "art_method-inl.h"
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#include "class_linker.h"
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#include "dex/invoke_type.h"
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#include "intrinsics_enum.h"
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#include "intrinsics_list.h"
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#include "mirror/class.h"
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#include "runtime.h"
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#include "scoped_thread_state_change-inl.h"
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#include "thread.h"
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namespace art {
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namespace {
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ArtMethod* FindIntrinsicMethod(Thread* self,
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const char* class_name,
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const char* method_name,
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const char* signature)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
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PointerSize image_size = class_linker->GetImagePointerSize();
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ObjPtr<mirror::Class> cls = class_linker->FindSystemClass(self, class_name);
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if (cls == nullptr) {
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LOG(FATAL) << "Could not find class of intrinsic " << class_name;
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}
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ArtMethod* method = cls->FindClassMethod(method_name, signature, image_size);
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if (method == nullptr || method->GetDeclaringClass() != cls) {
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LOG(FATAL) << "Could not find method of intrinsic "
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<< class_name << " " << method_name << " " << signature;
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}
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return method;
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}
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// Initialize an intrinsic. Returns true if the intrinsic is already
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// initialized, false otherwise.
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bool InitializeIntrinsic(Thread* self,
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Intrinsics intrinsic,
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InvokeType invoke_type,
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const char* class_name,
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const char* method_name,
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const char* signature)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ArtMethod* method = FindIntrinsicMethod(self, class_name, method_name, signature);
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CHECK_EQ(method->GetInvokeType(), invoke_type);
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if (method->IsIntrinsic()) {
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CHECK_EQ(method->GetIntrinsic(), static_cast<uint32_t>(intrinsic));
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return true;
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} else {
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method->SetIntrinsic(static_cast<uint32_t>(intrinsic));
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return false;
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}
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}
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// Returns true if the intrinsic is already initialized, false otherwise.
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bool IsIntrinsicInitialized(Thread* self,
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Intrinsics intrinsic,
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InvokeType invoke_type,
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const char* class_name,
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const char* method_name,
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const char* signature)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ArtMethod* method = FindIntrinsicMethod(self, class_name, method_name, signature);
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CHECK_EQ(method->GetInvokeType(), invoke_type);
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if (method->IsIntrinsic()) {
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CHECK_EQ(method->GetIntrinsic(), static_cast<uint32_t>(intrinsic));
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return true;
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} else {
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return false;
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}
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}
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bool AreAllIntrinsicsInitialized() {
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ScopedObjectAccess soa(Thread::Current());
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#define IS_INTRINSIC_INITIALIZED(Name, InvokeType, _, __, ___, ClassName, MethodName, Signature) \
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IsIntrinsicInitialized(soa.Self(), \
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Intrinsics::k##Name, \
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InvokeType, \
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ClassName, \
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MethodName, \
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Signature) &&
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bool result = INTRINSICS_LIST(IS_INTRINSIC_INITIALIZED) true;
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#undef IS_INTRINSIC_INITIALIZED
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return result;
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}
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} // namespace
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void InitializeIntrinsics() {
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ScopedObjectAccess soa(Thread::Current());
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// Initialization here uses the short-circuit operator || to stop
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// initializing if there's an already initialized intrinsic.
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#define INITIALIZE_INTRINSIC(Name, InvokeType, _, __, ___, ClassName, MethodName, Signature) \
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InitializeIntrinsic(soa.Self(), \
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Intrinsics::k##Name, \
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InvokeType, \
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ClassName, \
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MethodName, \
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Signature) ||
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INTRINSICS_LIST(INITIALIZE_INTRINSIC) true;
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#undef INITIALIZE_INTRINSIC
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DCHECK(AreAllIntrinsicsInitialized());
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}
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} // namespace art
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