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/*
* Copyright 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 "bcc/Renderscript/RSExecutable.h"
#include "bcc/Config/Config.h"
#include "bcc/Support/Disassembler.h"
#include "bcc/Support/FileBase.h"
#include "bcc/Support/Log.h"
#include "bcc/Support/OutputFile.h"
#include "bcc/ExecutionEngine/SymbolResolverProxy.h"
#include <utils/String8.h>
using namespace bcc;
const char *RSExecutable::SpecialFunctionNames[] = {
"root",
"init",
".rs.dtor",
// Must be NULL-terminated.
NULL
};
RSExecutable *RSExecutable::Create(RSInfo &pInfo,
FileBase &pObjFile,
SymbolResolverProxy &pResolver) {
// Load the object file. Enable the GDB's JIT debugging if the script contains
// debug information.
ObjectLoader *loader = ObjectLoader::Load(pObjFile,
pResolver,
pInfo.hasDebugInformation());
if (loader == NULL) {
return NULL;
}
// Now, all things required to build a RSExecutable object are ready.
RSExecutable *result = new (std::nothrow) RSExecutable(pInfo,
pObjFile,
*loader);
if (result == NULL) {
ALOGE("Out of memory when create object to hold RS result file for %s!",
pObjFile.getName().c_str());
return NULL;
}
unsigned idx;
// Resolve addresses of RS export vars.
idx = 0;
const RSInfo::ExportVarNameListTy &export_var_names =
pInfo.getExportVarNames();
for (RSInfo::ExportVarNameListTy::const_iterator
var_iter = export_var_names.begin(),
var_end = export_var_names.end(); var_iter != var_end;
var_iter++, idx++) {
const char *name = *var_iter;
void *addr = result->getSymbolAddress(name);
if (addr == NULL) {
ALOGW("RS export var at entry #%u named %s cannot be found in the result "
"object!", idx, name);
}
result->mExportVarAddrs.push_back(addr);
}
// Resolve addresses of RS export functions.
idx = 0;
const RSInfo::ExportFuncNameListTy &export_func_names =
pInfo.getExportFuncNames();
for (RSInfo::ExportFuncNameListTy::const_iterator
func_iter = export_func_names.begin(),
func_end = export_func_names.end(); func_iter != func_end;
func_iter++, idx++) {
const char *name = *func_iter;
void *addr = result->getSymbolAddress(name);
if (addr == NULL) {
ALOGW("RS export func at entry #%u named %s cannot be found in the result"
" object!", idx, name);
}
result->mExportFuncAddrs.push_back(addr);
}
// Resolve addresses of expanded RS foreach function.
idx = 0;
const RSInfo::ExportForeachFuncListTy &export_foreach_funcs =
pInfo.getExportForeachFuncs();
for (RSInfo::ExportForeachFuncListTy::const_iterator
foreach_iter = export_foreach_funcs.begin(),
foreach_end = export_foreach_funcs.end();
foreach_iter != foreach_end; foreach_iter++, idx++) {
const char *func_name = foreach_iter->first;
android::String8 expanded_func_name(func_name);
expanded_func_name.append(".expand");
void *addr = result->getSymbolAddress(expanded_func_name.string());
if (addr == NULL) {
ALOGW("Expanded RS foreach at entry #%u named %s cannot be found in the "
"result object!", idx, expanded_func_name.string());
}
result->mExportForeachFuncAddrs.push_back(addr);
}
// Copy pragma key/value pairs from RSInfo::getPragmas() into mPragmaKeys and
// mPragmaValues, respectively.
const RSInfo::PragmaListTy &pragmas = pInfo.getPragmas();
for (RSInfo::PragmaListTy::const_iterator pragma_iter = pragmas.begin(),
pragma_end = pragmas.end(); pragma_iter != pragma_end;
pragma_iter++){
result->mPragmaKeys.push_back(pragma_iter->first);
result->mPragmaValues.push_back(pragma_iter->second);
}
return result;
}
bool RSExecutable::syncInfo(bool pForce) {
if (!pForce && !mIsInfoDirty) {
return true;
}
android::String8 info_path = RSInfo::GetPath(*mObjFile);
OutputFile info_file(info_path.string(), FileBase::kTruncate);
if (info_file.hasError()) {
ALOGE("Failed to open the info file %s for write! (%s)", info_path.string(),
info_file.getErrorMessage().c_str());
return false;
}
// Operation to the RS info file need to acquire the lock on the output file
// first.
if (!mObjFile->lock(FileBase::kWriteLock)) {
ALOGE("Write to RS info file %s required the acquisition of the write lock "
"on %s but got failure! (%s)", info_path.string(),
mObjFile->getName().c_str(), info_file.getErrorMessage().c_str());
return false;
}
// Perform the write.
if (!mInfo->write(info_file)) {
ALOGE("Failed to sync the RS info file %s!", info_path.string());
mObjFile->unlock();
return false;
}
mObjFile->unlock();
mIsInfoDirty = false;
return true;
}
void RSExecutable::dumpDisassembly(OutputFile &pOutput) const {
#if DEBUG_MC_DISASSEMBLER
if (pOutput.hasError()) {
return;
}
// Get MC codegen emitted function name list.
android::Vector<const char *> func_list;
if (!mLoader->getSymbolNameList(func_list, ObjectLoader::kFunctionType)) {
ALOGW("Failed to get the list of function name in %s for disassembly!",
mObjFile->getName().c_str());
} else {
// Disassemble each function
for (size_t i = 0, e = func_list.size(); i != e; i++) {
const char* func_name = func_list[i];
void *func = mLoader->getSymbolAddress(func_name);
size_t func_size = mLoader->getSymbolSize(func_name);
if (func == NULL) {
continue;
}
DisassembleResult result =
Disassemble(pOutput, DEFAULT_TARGET_TRIPLE_STRING, func_name,
reinterpret_cast<const uint8_t *>(func), func_size);
if (result != kDisassembleSuccess) {
ALOGW("Failed to disassemble the function %s in %s (error code=%zu)!",
func_name, mObjFile->getName().c_str(), static_cast<size_t>(result));
if (result != kDisassembleInvalidInstruction) {
ALOGW("And the error occured in disassembler is fatal. Abort "
"disassembler on remaining functions!");
break;
}
}
}
}
#endif
return;
}
RSExecutable::~RSExecutable() {
syncInfo();
delete mInfo;
delete mObjFile;
delete mLoader;
}