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/*
* Copyright (C) 2019 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 <stdio.h>
#include <memory>
#include <string>
#include "ETMDecoder.h"
#include "command.h"
#include "record_file.h"
#include "thread_tree.h"
using namespace simpleperf;
namespace {
class InjectCommand : public Command {
public:
InjectCommand()
: Command("inject", "convert etm instruction tracing data into instr ranges",
// clang-format off
"Usage: simpleperf inject [options]\n"
"-i <file> input perf.data, generated by recording cs-etm event type.\n"
" Default is perf.data.\n"
"-o <file> output file. Default is perf_inject.data.\n"
"--dump-etm type1,type2,... Dump etm data. A type is one of raw, packet and element.\n"
"--symdir <dir> Look for binaries in a directory recursively.\n"
// clang-format on
),
output_fp_(nullptr, fclose) {}
bool Run(const std::vector<std::string>& args) override {
if (!ParseOptions(args)) {
return false;
}
record_file_reader_ = RecordFileReader::CreateInstance(input_filename_);
if (!record_file_reader_) {
return false;
}
record_file_reader_->LoadBuildIdAndFileFeatures(thread_tree_);
output_fp_.reset(fopen(output_filename_.c_str(), "w"));
if (!output_fp_) {
PLOG(ERROR) << "failed to write to " << output_filename_;
return false;
}
if (!record_file_reader_->ReadDataSection([this](auto r) { return ProcessRecord(r.get()); })) {
return false;
}
output_fp_.reset(nullptr);
return true;
}
private:
bool ParseOptions(const std::vector<std::string>& args) {
for (size_t i = 0; i < args.size(); i++) {
if (args[i] == "-i") {
if (!NextArgumentOrError(args, &i)) {
return false;
}
input_filename_ = args[i];
} else if (args[i] == "-o") {
if (!NextArgumentOrError(args, &i)) {
return false;
}
output_filename_ = args[i];
} else if (args[i] == "--dump-etm") {
if (!NextArgumentOrError(args, &i) || !ParseEtmDumpOption(args[i], &etm_dump_option_)) {
return false;
}
} else if (args[i] == "--symdir") {
if (!NextArgumentOrError(args, &i) || !Dso::AddSymbolDir(args[i])) {
return false;
}
} else {
ReportUnknownOption(args, i);
return false;
}
}
return true;
}
bool ProcessRecord(Record* r) {
thread_tree_.Update(*r);
if (r->type() == PERF_RECORD_AUXTRACE_INFO) {
auto instr_range_callback = [this](auto& range) { ProcessInstrRange(range); };
etm_decoder_ = ETMDecoder::Create(*static_cast<AuxTraceInfoRecord*>(r), thread_tree_);
if (!etm_decoder_) {
return false;
}
etm_decoder_->EnableDump(etm_dump_option_);
etm_decoder_->RegisterCallback(instr_range_callback);
} else if (r->type() == PERF_RECORD_AUX) {
AuxRecord* aux = static_cast<AuxRecord*>(r);
uint64_t aux_size = aux->data->aux_size;
if (aux_size > 0) {
if (aux_data_buffer_.size() < aux_size) {
aux_data_buffer_.resize(aux_size);
}
if (!record_file_reader_->ReadAuxData(aux->Cpu(), aux->data->aux_offset,
aux_data_buffer_.data(), aux_size)) {
LOG(ERROR) << "failed to read aux data";
return false;
}
return etm_decoder_->ProcessData(aux_data_buffer_.data(), aux_size);
}
}
return true;
}
void ProcessInstrRange(const ETMInstrRange& instr_range) {
fprintf(output_fp_.get(),
"dso %s, [0x%" PRIx64 "-0x%" PRIx64 "], branch_to 0x%" PRIx64 ", taken %" PRIu64
", not_taken %" PRIu64 "\n",
instr_range.dso->GetDebugFilePath().c_str(), instr_range.start_addr,
instr_range.end_addr, instr_range.branch_to_addr, instr_range.branch_taken_count,
instr_range.branch_not_taken_count);
}
std::string input_filename_ = "perf.data";
std::string output_filename_ = "perf_inject.data";
ThreadTree thread_tree_;
std::unique_ptr<RecordFileReader> record_file_reader_;
ETMDumpOption etm_dump_option_;
std::unique_ptr<ETMDecoder> etm_decoder_;
std::vector<uint8_t> aux_data_buffer_;
std::unique_ptr<FILE, decltype(&fclose)> output_fp_;
};
} // namespace
void RegisterInjectCommand() {
return RegisterCommand("inject", [] { return std::unique_ptr<Command>(new InjectCommand); });
}
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