85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/*
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* Copyright (C) 2012 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_support_builder_x86.h"
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#include "base/stringprintf.h"
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#include "ir_builder.h"
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#include "thread.h"
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#include "utils_llvm.h"
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#include <llvm/IR/DerivedTypes.h>
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#include <llvm/IR/Function.h>
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#include <llvm/IR/InlineAsm.h>
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#include <llvm/IR/Module.h>
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#include <llvm/IR/Type.h>
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#include <vector>
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using ::llvm::CallInst;
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using ::llvm::Function;
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using ::llvm::FunctionType;
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using ::llvm::InlineAsm;
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using ::llvm::Type;
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using ::llvm::UndefValue;
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using ::llvm::Value;
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namespace art {
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namespace llvm {
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Value* RuntimeSupportBuilderX86::EmitGetCurrentThread() {
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Function* ori_func = GetRuntimeSupportFunction(runtime_support::GetCurrentThread);
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std::string inline_asm(StringPrintf("mov %%fs:%d, $0", Thread::SelfOffset().Int32Value()));
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InlineAsm* func = InlineAsm::get(ori_func->getFunctionType(), inline_asm, "=r", false);
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CallInst* thread = irb_.CreateCall(func);
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thread->setDoesNotAccessMemory();
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irb_.SetTBAA(thread, kTBAAConstJObject);
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return thread;
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}
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Value* RuntimeSupportBuilderX86::EmitLoadFromThreadOffset(int64_t offset, Type* type,
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TBAASpecialType s_ty) {
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FunctionType* func_ty = FunctionType::get(/*Result=*/type,
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/*isVarArg=*/false);
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std::string inline_asm(StringPrintf("mov %%fs:%d, $0", static_cast<int>(offset)));
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InlineAsm* func = InlineAsm::get(func_ty, inline_asm, "=r", true);
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CallInst* result = irb_.CreateCall(func);
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result->setOnlyReadsMemory();
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irb_.SetTBAA(result, s_ty);
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return result;
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}
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void RuntimeSupportBuilderX86::EmitStoreToThreadOffset(int64_t offset, Value* value,
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TBAASpecialType s_ty) {
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FunctionType* func_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_),
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/*Params=*/value->getType(),
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/*isVarArg=*/false);
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std::string inline_asm(StringPrintf("mov $0, %%fs:%d", static_cast<int>(offset)));
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InlineAsm* func = InlineAsm::get(func_ty, inline_asm, "r", true);
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CallInst* call_inst = irb_.CreateCall(func, value);
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irb_.SetTBAA(call_inst, s_ty);
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}
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Value* RuntimeSupportBuilderX86::EmitSetCurrentThread(Value*) {
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/* Nothing to be done. */
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return UndefValue::get(irb_.getJObjectTy());
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}
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} // namespace llvm
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} // namespace art
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