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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 "runtime_support_builder_x86.h"
#include "base/stringprintf.h"
#include "ir_builder.h"
#include "thread.h"
#include "utils_llvm.h"
#include <llvm/IR/DerivedTypes.h>
#include <llvm/IR/Function.h>
#include <llvm/IR/InlineAsm.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Type.h>
#include <vector>
using ::llvm::CallInst;
using ::llvm::Function;
using ::llvm::FunctionType;
using ::llvm::InlineAsm;
using ::llvm::Type;
using ::llvm::UndefValue;
using ::llvm::Value;
namespace art {
namespace llvm {
Value* RuntimeSupportBuilderX86::EmitGetCurrentThread() {
Function* ori_func = GetRuntimeSupportFunction(runtime_support::GetCurrentThread);
std::string inline_asm(StringPrintf("mov %%fs:%d, $0", Thread::SelfOffset().Int32Value()));
InlineAsm* func = InlineAsm::get(ori_func->getFunctionType(), inline_asm, "=r", false);
CallInst* thread = irb_.CreateCall(func);
thread->setDoesNotAccessMemory();
irb_.SetTBAA(thread, kTBAAConstJObject);
return thread;
}
Value* RuntimeSupportBuilderX86::EmitLoadFromThreadOffset(int64_t offset, Type* type,
TBAASpecialType s_ty) {
FunctionType* func_ty = FunctionType::get(/*Result=*/type,
/*isVarArg=*/false);
std::string inline_asm(StringPrintf("mov %%fs:%d, $0", static_cast<int>(offset)));
InlineAsm* func = InlineAsm::get(func_ty, inline_asm, "=r", true);
CallInst* result = irb_.CreateCall(func);
result->setOnlyReadsMemory();
irb_.SetTBAA(result, s_ty);
return result;
}
void RuntimeSupportBuilderX86::EmitStoreToThreadOffset(int64_t offset, Value* value,
TBAASpecialType s_ty) {
FunctionType* func_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_),
/*Params=*/value->getType(),
/*isVarArg=*/false);
std::string inline_asm(StringPrintf("mov $0, %%fs:%d", static_cast<int>(offset)));
InlineAsm* func = InlineAsm::get(func_ty, inline_asm, "r", true);
CallInst* call_inst = irb_.CreateCall(func, value);
irb_.SetTBAA(call_inst, s_ty);
}
Value* RuntimeSupportBuilderX86::EmitSetCurrentThread(Value*) {
/* Nothing to be done. */
return UndefValue::get(irb_.getJObjectTy());
}
} // namespace llvm
} // namespace art
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