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/*
* Copyright (C) 2017 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 "runtime_intrinsics.h"
#include "art_method-inl.h"
#include "class_linker.h"
#include "dex/invoke_type.h"
#include "intrinsics_enum.h"
#include "intrinsics_list.h"
#include "mirror/class.h"
#include "runtime.h"
#include "scoped_thread_state_change-inl.h"
#include "thread.h"
namespace art {
namespace {
ArtMethod* FindIntrinsicMethod(Thread* self,
const char* class_name,
const char* method_name,
const char* signature)
REQUIRES_SHARED(Locks::mutator_lock_) {
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
PointerSize image_size = class_linker->GetImagePointerSize();
ObjPtr<mirror::Class> cls = class_linker->FindSystemClass(self, class_name);
if (cls == nullptr) {
LOG(FATAL) << "Could not find class of intrinsic " << class_name;
}
ArtMethod* method = cls->FindClassMethod(method_name, signature, image_size);
if (method == nullptr || method->GetDeclaringClass() != cls) {
LOG(FATAL) << "Could not find method of intrinsic "
<< class_name << " " << method_name << " " << signature;
}
return method;
}
// Initialize an intrinsic. Returns true if the intrinsic is already
// initialized, false otherwise.
bool InitializeIntrinsic(Thread* self,
Intrinsics intrinsic,
InvokeType invoke_type,
const char* class_name,
const char* method_name,
const char* signature)
REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* method = FindIntrinsicMethod(self, class_name, method_name, signature);
CHECK_EQ(method->GetInvokeType(), invoke_type);
if (method->IsIntrinsic()) {
CHECK_EQ(method->GetIntrinsic(), static_cast<uint32_t>(intrinsic));
return true;
} else {
method->SetIntrinsic(static_cast<uint32_t>(intrinsic));
return false;
}
}
// Returns true if the intrinsic is already initialized, false otherwise.
bool IsIntrinsicInitialized(Thread* self,
Intrinsics intrinsic,
InvokeType invoke_type,
const char* class_name,
const char* method_name,
const char* signature)
REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* method = FindIntrinsicMethod(self, class_name, method_name, signature);
CHECK_EQ(method->GetInvokeType(), invoke_type);
if (method->IsIntrinsic()) {
CHECK_EQ(method->GetIntrinsic(), static_cast<uint32_t>(intrinsic));
return true;
} else {
return false;
}
}
bool AreAllIntrinsicsInitialized() REQUIRES_SHARED(Locks::mutator_lock_) {
Thread* self = Thread::Current();
#define IS_INTRINSIC_INITIALIZED(Name, InvokeType, _, __, ___, ClassName, MethodName, Signature) \
IsIntrinsicInitialized(self, \
Intrinsics::k##Name, \
InvokeType, \
ClassName, \
MethodName, \
Signature) &&
bool result = INTRINSICS_LIST(IS_INTRINSIC_INITIALIZED) true;
#undef IS_INTRINSIC_INITIALIZED
return result;
}
} // namespace
void InitializeIntrinsics() {
Thread* self = Thread::Current();
// Initialization here uses the short-circuit operator || to stop
// initializing if there's an already initialized intrinsic.
#define INITIALIZE_INTRINSIC(Name, InvokeType, _, __, ___, ClassName, MethodName, Signature) \
InitializeIntrinsic(self, \
Intrinsics::k##Name, \
InvokeType, \
ClassName, \
MethodName, \
Signature) ||
INTRINSICS_LIST(INITIALIZE_INTRINSIC) true;
#undef INITIALIZE_INTRINSIC
DCHECK(AreAllIntrinsicsInitialized());
}
} // namespace art