1b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa/* 2b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * Copyright (C) 2012 The Android Open Source Project 3b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * 4b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * Licensed under the Apache License, Version 2.0 (the "License"); 5b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * you may not use this file except in compliance with the License. 6b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * You may obtain a copy of the License at 7b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * 8b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * http://www.apache.org/licenses/LICENSE-2.0 9b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * 10b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * Unless required by applicable law or agreed to in writing, software 11b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * distributed under the License is distributed on an "AS IS" BASIS, 12b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * See the License for the specific language governing permissions and 14b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa * limitations under the License. 15b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa */ 16b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 17b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include "runtime_support_builder_thumb2.h" 18b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 19b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include "ir_builder.h" 202dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers#include "mirror/object.h" 21b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include "monitor.h" 22b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include "thread.h" 23b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include "utils_llvm.h" 24b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 2537d4879df243f7a2161b5416fad299ad1d495131Brian Carlstrom#include <llvm/IR/DerivedTypes.h> 2637d4879df243f7a2161b5416fad299ad1d495131Brian Carlstrom#include <llvm/IR/Function.h> 2737d4879df243f7a2161b5416fad299ad1d495131Brian Carlstrom#include <llvm/IR/InlineAsm.h> 2837d4879df243f7a2161b5416fad299ad1d495131Brian Carlstrom#include <llvm/IR/Module.h> 2937d4879df243f7a2161b5416fad299ad1d495131Brian Carlstrom#include <llvm/IR/Type.h> 30b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 31b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include <inttypes.h> 32b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa#include <vector> 33b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 343e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromusing ::llvm::BasicBlock; 353e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromusing ::llvm::Function; 363e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromusing ::llvm::FunctionType; 373e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromusing ::llvm::InlineAsm; 383e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromusing ::llvm::Type; 393e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromusing ::llvm::Value; 40b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 41b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYanamespace art { 424c1c283a7410784e9cab309f868248690b788a9cIan Rogersnamespace llvm { 43b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 44b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 453e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstromvoid RuntimeSupportBuilderThumb2::EmitLockObject(Value* object) { 46b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa FunctionType* func_ty = FunctionType::get(/*Result=*/irb_.getInt32Ty(), 47b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa /*Params=*/irb_.getJObjectTy(), 48b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa /*isVarArg=*/false); 49b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa // $0: result 50b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa // $1: object 51b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa // $2: temp 52b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa // $3: temp 53b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa std::string asms; 549b3c3cdb62f7142384e6bf2c0cb6e3a76b16f0e3Mathieu Chartier StringAppendF(&asms, "add $3, $1, #%" PRId32 "\n", mirror::Object::MonitorOffset().Int32Value()); 559b3c3cdb62f7142384e6bf2c0cb6e3a76b16f0e3Mathieu Chartier StringAppendF(&asms, "ldr $2, [r9, #%" PRId32 "]\n", Thread::ThinLockIdOffset().Int32Value()); 56b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "ldrex $0, [$3]\n"); 57b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "lsl $2, $2, %d\n", LW_LOCK_OWNER_SHIFT); 58b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "bfi $2, $0, #0, #%d\n", LW_LOCK_OWNER_SHIFT - 1); 59b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "bfc $0, #%d, #%d\n", LW_HASH_STATE_SHIFT, LW_LOCK_OWNER_SHIFT - 1); 60b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "cmp $0, #0\n"); 61b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "it eq\n"); 62b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa StringAppendF(&asms, "strexeq $0, $2, [$3]\n"); 63b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 64b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa InlineAsm* func = InlineAsm::get(func_ty, asms, "=&l,l,~l,~l", true); 65b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 663e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstrom Value* retry_slow_path = irb_.CreateCall(func, object); 67b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa retry_slow_path = irb_.CreateICmpNE(retry_slow_path, irb_.getJInt(0)); 68b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 693e3d591f781b771de89f3b989830da2b6ac6fac8Brian Carlstrom Function* parent_func = irb_.GetInsertBlock()->getParent(); 70b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa BasicBlock* basic_block_lock = BasicBlock::Create(context_, "lock", parent_func); 71b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa BasicBlock* basic_block_cont = BasicBlock::Create(context_, "lock_cont", parent_func); 72b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa irb_.CreateCondBr(retry_slow_path, basic_block_lock, basic_block_cont, kUnlikely); 73b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 74b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa irb_.SetInsertPoint(basic_block_lock); 75b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa Function* slow_func = GetRuntimeSupportFunction(runtime_support::LockObject); 76b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa irb_.CreateCall2(slow_func, object, EmitGetCurrentThread()); 77b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa irb_.CreateBr(basic_block_cont); 78b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 79b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa irb_.SetInsertPoint(basic_block_cont); 807934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { // Memory barrier 81b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa FunctionType* asm_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_), 82b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa /*isVarArg=*/false); 83b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa InlineAsm* func = InlineAsm::get(asm_ty, "dmb sy", "", true); 84b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa irb_.CreateCall(func); 85b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa } 86b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa} 87b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 88b08ed1255fc34b9f34bcea66cd5e0a292af3d698TDYa 897934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom} // namespace llvm 907934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom} // namespace art 91