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78 lines
2.2 KiB
78 lines
2.2 KiB
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <inttypes.h>
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#include <map>
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#include <memory>
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#include "event_type.h"
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#include "perf_event.h"
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#include "record.h"
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namespace simpleperf {
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struct ETMPerCpu {
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uint32_t trcidr0;
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uint32_t trcidr1;
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uint32_t trcidr2;
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uint32_t trcidr4;
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uint32_t trcidr8;
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uint32_t trcauthstatus;
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int GetMajorVersion() const;
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bool IsContextIDSupported() const;
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bool IsTimestampSupported() const;
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bool IsEnabled() const;
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};
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// Help recording Coresight ETM data on ARM devices.
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// 1. Get etm event type on device.
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// 2. Get sink config, which selects the ETR device moving etm data to memory.
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// 3. Get etm info on each cpu.
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// The etm event type and sink config are used to build perf_event_attr for etm data tracing.
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// The etm info is kept in perf.data to help etm decoding.
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class ETMRecorder {
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public:
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static ETMRecorder& GetInstance();
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// If not found, return -1.
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int GetEtmEventType();
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std::unique_ptr<EventType> BuildEventType();
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bool CheckEtmSupport();
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void SetEtmPerfEventAttr(perf_event_attr* attr);
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AuxTraceInfoRecord CreateAuxTraceInfoRecord();
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size_t GetAddrFilterPairs();
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private:
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bool ReadEtmInfo();
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bool FindSinkConfig();
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void BuildEtmConfig();
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int event_type_ = 0;
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bool etm_supported_ = false;
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// select ETR device, setting in perf_event_attr->config2
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uint32_t sink_config_ = 0;
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// select etm options (timestamp, context_id, ...), setting in perf_event_attr->config
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uint64_t etm_event_config_ = 0;
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// record etm options in AuxTraceInfoRecord
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uint32_t etm_config_reg_ = 0;
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std::map<int, ETMPerCpu> etm_info_;
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};
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} // namespace simpleperf
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