/* * 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. */ #pragma once #include #include #include #include "event_type.h" #include "record.h" #include "perf_event.h" namespace simpleperf { struct ETMPerCpu { uint32_t trcidr0; uint32_t trcidr1; uint32_t trcidr2; uint32_t trcidr4; uint32_t trcidr8; uint32_t trcauthstatus; int GetMajorVersion() const; bool IsContextIDSupported() const; bool IsTimestampSupported() const; bool IsEnabled() const; }; // Help recording Coresight ETM data on ARM devices. // 1. Get etm event type on device. // 2. Get sink config, which selects the ETR device moving etm data to memory. // 3. Get etm info on each cpu. // The etm event type and sink config are used to build perf_event_attr for etm data tracing. // The etm info is kept in perf.data to help etm decoding. class ETMRecorder { public: static ETMRecorder& GetInstance(); // If not found, return -1. int GetEtmEventType(); std::unique_ptr BuildEventType(); bool CheckEtmSupport(); void SetEtmPerfEventAttr(perf_event_attr* attr); AuxTraceInfoRecord CreateAuxTraceInfoRecord(); size_t GetAddrFilterPairs(); private: bool ReadEtmInfo(); bool FindSinkConfig(); void BuildEtmConfig(); int event_type_ = 0; bool etm_supported_ = false; // select ETR device, setting in perf_event_attr->config2 uint32_t sink_config_ = 0; // select etm options (timestamp, context_id, ...), setting in perf_event_attr->config uint64_t etm_event_config_ = 0; // record etm options in AuxTraceInfoRecord uint32_t etm_config_reg_ = 0; std::map etm_info_; }; } // namespace simpleperf