1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SRC_PROFILING_PERF_REGS_PARSING_H_ 18 #define SRC_PROFILING_PERF_REGS_PARSING_H_ 19 20 #include <stdint.h> 21 #include <unwindstack/Regs.h> 22 23 #include <memory> 24 25 #include "perfetto/ext/base/scoped_file.h" 26 27 namespace perfetto { 28 namespace profiling { 29 30 // Returns a bitmask for sampling the userspace register set, used when 31 // configuring perf events. 32 uint64_t PerfUserRegsMaskForArch(unwindstack::ArchEnum arch); 33 34 // Converts the raw sampled register bytes to libunwindstack's representation 35 // (correct arch-dependent subclass). Advances |data| pointer to past the 36 // register data. The unique_ptr can be empty, if there were no userspace 37 // registers to sample (i.e. we've sampled a kernel thread). 38 // TODO(rsavitski): come up with a better signature (also consider how much to 39 // isolate libunwindstack types). 40 std::unique_ptr<unwindstack::Regs> ReadPerfUserRegsData(const char** data); 41 42 } // namespace profiling 43 } // namespace perfetto 44 45 #endif // SRC_PROFILING_PERF_REGS_PARSING_H_ 46