Source.cpp revision 6202dda52b7898340aac05e73adebc4fb9199f4d
1d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao/* 2d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * Copyright 2012, The Android Open Source Project 3d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * 4d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * Licensed under the Apache License, Version 2.0 (the "License"); 5d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * you may not use this file except in compliance with the License. 6d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * You may obtain a copy of the License at 7d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * 8d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * http://www.apache.org/licenses/LICENSE-2.0 9d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * 10d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * Unless required by applicable law or agreed to in writing, software 11d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * distributed under the License is distributed on an "AS IS" BASIS, 12d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * See the License for the specific language governing permissions and 14d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao * limitations under the License. 15d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao */ 16d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 17c72c4ddfcd79c74f70713da91a69569451b5c19eZonr Chang#include "bcc/Source.h" 18d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 19d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <new> 20d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 21d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <llvm/Bitcode/ReaderWriter.h> 22d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <llvm/LLVMContext.h> 23d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <llvm/Linker.h> 24d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <llvm/Module.h> 25d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <llvm/Support/MemoryBuffer.h> 26d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include <llvm/Support/system_error.h> 27d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 28c72c4ddfcd79c74f70713da91a69569451b5c19eZonr Chang#include "bcc/BCCContext.h" 29ef73a242762bcd8113b9b65ceccbe7d909b5acbcZonr Chang#include "bcc/Support/Log.h" 30c72c4ddfcd79c74f70713da91a69569451b5c19eZonr Chang 31d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao#include "BCCContextImpl.h" 32d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 33d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liaonamespace { 34d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 35d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao// Helper function to load the bitcode. This uses "bitcode lazy load" feature to 36d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao// reduce the startup time. On success, return the LLVM module object created 37d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao// and take the ownership of input memory buffer (i.e., pInput). On error, 38d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao// return NULL and will NOT take the ownership of pInput. 39d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liaostatic inline llvm::Module *helper_load_bitcode(llvm::LLVMContext &pContext, 40d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::MemoryBuffer *pInput) { 41d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao std::string error; 42d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::Module *module = llvm::getLazyBitcodeModule(pInput, pContext, &error); 43d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 44d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (module == NULL) { 45d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ALOGE("Unable to parse the given bitcode file `%s'! (%s)", 46d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao pInput->getBufferIdentifier(), error.c_str()); 47d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 48d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 49d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return module; 50d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 51d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 52d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} // end anonymous namespace 53d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 54d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liaonamespace bcc { 55d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 56d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei LiaoSource *Source::CreateFromBuffer(BCCContext &pContext, 57d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao const char *pName, 58d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao const char *pBitcode, 59d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao size_t pBitcodeSize) { 60d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::StringRef input_data(pBitcode, pBitcodeSize); 61d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::MemoryBuffer *input_memory = 62c996b870ae40603b477a8d7a50f461b82389aaf1Shih-wei Liao llvm::MemoryBuffer::getMemBuffer(input_data, "", false); 63d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 64d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (input_memory == NULL) { 65d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ALOGE("Unable to load bitcode `%s' from buffer!", pName); 66d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return NULL; 67d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 68d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 69d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::Module *module = helper_load_bitcode(pContext.mImpl->mLLVMContext, 70d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao input_memory); 71d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (module == NULL) { 72d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete input_memory; 73d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return NULL; 74d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 75d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 76d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao Source *result = CreateFromModule(pContext, *module, /* pNoDelete */false); 77d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (result == NULL) { 78d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete module; 79d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 80d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 81d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return result; 82d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 83d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 84d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei LiaoSource *Source::CreateFromFile(BCCContext &pContext, const std::string &pPath) { 85d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::OwningPtr<llvm::MemoryBuffer> input_data; 86d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 87d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::error_code ec = llvm::MemoryBuffer::getFile(pPath, input_data); 88d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (ec != llvm::error_code::success()) { 89d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ALOGE("Failed to load bitcode from path %s! (%s)", pPath.c_str(), 90d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ec.message().c_str()); 91d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return NULL; 92d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 93d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 94d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::MemoryBuffer *input_memory = input_data.take(); 95d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::Module *module = helper_load_bitcode(pContext.mImpl->mLLVMContext, 96d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao input_memory); 97d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (module == NULL) { 98d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete input_memory; 99d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return NULL; 100d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 101d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 102d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao Source *result = CreateFromModule(pContext, *module, /* pNoDelete */false); 103d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (result == NULL) { 104d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete module; 105d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 106d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 107d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return result; 108d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 109d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 1106202dda52b7898340aac05e73adebc4fb9199f4dShih-wei LiaoSource *Source::CreateFromFd(BCCContext &pContext, int pFd) { 1116202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao llvm::OwningPtr<llvm::MemoryBuffer> input_data; 1126202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao 1136202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao llvm::error_code ec = 1146202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao llvm::MemoryBuffer::getOpenFile(pFd, /* Filename */"", input_data); 1156202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao 1166202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao if (ec != llvm::error_code::success()) { 1176202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao ALOGE("Failed to load bitcode from file descriptor %d! (%s)", 1186202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao pFd, ec.message().c_str()); 1196202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao return NULL; 1206202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao } 1216202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao 1226202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao llvm::MemoryBuffer *input_memory = input_data.take(); 1236202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao llvm::Module *module = helper_load_bitcode(pContext.mImpl->mLLVMContext, 1246202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao input_memory); 1256202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao if (module == NULL) { 1266202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao delete input_memory; 1276202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao return NULL; 1286202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao } 1296202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao 1306202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao Source *result = CreateFromModule(pContext, *module, /* pNoDelete */false); 1316202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao if (result == NULL) { 1326202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao delete module; 1336202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao } 1346202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao 1356202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao return result; 1366202dda52b7898340aac05e73adebc4fb9199f4dShih-wei Liao} 137d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 138d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei LiaoSource *Source::CreateFromModule(BCCContext &pContext, llvm::Module &pModule, 139d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao bool pNoDelete) { 140d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao Source *result = new (std::nothrow) Source(pContext, pModule, pNoDelete); 141d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (result == NULL) { 142d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ALOGE("Out of memory during Source object allocation for `%s'!", 143d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao pModule.getModuleIdentifier().c_str()); 144d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 145d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return result; 146d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 147d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 148d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei LiaoSource::Source(BCCContext &pContext, llvm::Module &pModule, bool pNoDelete) 149d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao : mContext(pContext), mModule(&pModule), mNoDelete(pNoDelete) { 150d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao pContext.addSource(*this); 151d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 152d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 153d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei LiaoSource::~Source() { 154d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao mContext.removeSource(*this); 155d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (!mNoDelete) 156d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete mModule; 157d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 158d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 159d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liaobool Source::merge(Source &pSource, bool pPreserveSource) { 160d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao std::string error; 161d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::Linker::LinkerMode mode = 162d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ((pPreserveSource) ? llvm::Linker::PreserveSource : 163d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::Linker::DestroySource); 164d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 165d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (llvm::Linker::LinkModules(mModule, &pSource.getModule(), 166d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao mode, &error) != 0) { 167d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ALOGE("Failed to link source `%s' with `%s' (%s)!", 168d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao getIdentifier().c_str(), 169d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao pSource.getIdentifier().c_str(), 170d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao error.c_str()); 171d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return false; 172d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 173d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 174d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (!pPreserveSource) { 175d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao pSource.mNoDelete = true; 176d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete &pSource; 177d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 178d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 179d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return true; 180d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 181d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 182d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei LiaoSource *Source::CreateEmpty(BCCContext &pContext, const std::string &pName) { 183d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao // Create an empty module 184d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao llvm::Module *module = 185d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao new (std::nothrow) llvm::Module(pName, pContext.mImpl->mLLVMContext); 186d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 187d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (module == NULL) { 188d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao ALOGE("Out of memory when creating empty LLVM module `%s'!", pName.c_str()); 189d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return NULL; 190d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 191d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 192d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao Source *result = CreateFromModule(pContext, *module, /* pNoDelete */false); 193d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao if (result == NULL) { 194d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao delete module; 195d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao } 196d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 197d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return result; 198d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 199d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 200d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liaoconst std::string &Source::getIdentifier() const { 201d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao return mModule->getModuleIdentifier(); 202d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} 203d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao 204d2a5a0eab7a1273797029702652e50b2ed9e6a6dShih-wei Liao} // namespace bcc 205