2fcf4cf13e
The backtrace offline code uses these error codes to diagnose errors. In addtion, I've had cases where seeing these errors would help diagnose failures. This also allows us to add a few features to indicate why an unwind terminated (such as max frames exceeded). Bug: 65682279 Test: Updated unit tests pass. Change-Id: If82b5092698e8a194016d670efff1320f9b44d50
134 lines
4.2 KiB
C++
134 lines
4.2 KiB
C++
/*
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* Copyright (C) 2017 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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#ifndef _LIBUNWINDSTACK_TESTS_ELF_FAKE_H
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#define _LIBUNWINDSTACK_TESTS_ELF_FAKE_H
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#include <stdint.h>
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#include <deque>
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#include <string>
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#include <unordered_map>
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#include <unwindstack/Elf.h>
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#include <unwindstack/ElfInterface.h>
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#include <unwindstack/Memory.h>
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#include <unwindstack/Regs.h>
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#include "ElfInterfaceArm.h"
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namespace unwindstack {
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struct StepData {
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StepData(uint64_t pc, uint64_t sp, bool finished) : pc(pc), sp(sp), finished(finished) {}
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uint64_t pc;
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uint64_t sp;
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bool finished;
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};
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struct FunctionData {
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FunctionData(std::string name, uint64_t offset) : name(name), offset(offset) {}
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std::string name;
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uint64_t offset;
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};
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class ElfFake : public Elf {
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public:
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ElfFake(Memory* memory) : Elf(memory) { valid_ = true; }
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virtual ~ElfFake() = default;
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void FakeSetValid(bool valid) { valid_ = valid; }
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void FakeSetLoadBias(uint64_t load_bias) { load_bias_ = load_bias; }
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void FakeSetInterface(ElfInterface* interface) { interface_.reset(interface); }
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void FakeSetGnuDebugdataInterface(ElfInterface* interface) {
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gnu_debugdata_interface_.reset(interface);
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}
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};
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class ElfInterfaceFake : public ElfInterface {
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public:
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ElfInterfaceFake(Memory* memory) : ElfInterface(memory) {}
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virtual ~ElfInterfaceFake() = default;
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bool Init(uint64_t*) override { return false; }
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void InitHeaders() override {}
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bool GetSoname(std::string*) override { return false; }
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bool GetFunctionName(uint64_t, uint64_t, std::string*, uint64_t*) override;
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bool GetGlobalVariable(const std::string&, uint64_t*) override;
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bool Step(uint64_t, uint64_t, Regs*, Memory*, bool*) override;
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void FakeSetGlobalVariable(const std::string& global, uint64_t offset) {
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globals_[global] = offset;
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}
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static void FakePushFunctionData(const FunctionData data) { functions_.push_back(data); }
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static void FakePushStepData(const StepData data) { steps_.push_back(data); }
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static void FakeClear() {
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functions_.clear();
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steps_.clear();
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}
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void FakeSetErrorCode(ErrorCode code) { last_error_.code = code; }
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void FakeSetErrorAddress(uint64_t address) { last_error_.address = address; }
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private:
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std::unordered_map<std::string, uint64_t> globals_;
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static std::deque<FunctionData> functions_;
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static std::deque<StepData> steps_;
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};
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class ElfInterface32Fake : public ElfInterface32 {
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public:
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ElfInterface32Fake(Memory* memory) : ElfInterface32(memory) {}
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virtual ~ElfInterface32Fake() = default;
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void FakeSetEhFrameOffset(uint64_t offset) { eh_frame_offset_ = offset; }
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void FakeSetEhFrameSize(uint64_t size) { eh_frame_size_ = size; }
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void FakeSetDebugFrameOffset(uint64_t offset) { debug_frame_offset_ = offset; }
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void FakeSetDebugFrameSize(uint64_t size) { debug_frame_size_ = size; }
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};
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class ElfInterface64Fake : public ElfInterface64 {
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public:
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ElfInterface64Fake(Memory* memory) : ElfInterface64(memory) {}
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virtual ~ElfInterface64Fake() = default;
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void FakeSetEhFrameOffset(uint64_t offset) { eh_frame_offset_ = offset; }
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void FakeSetEhFrameSize(uint64_t size) { eh_frame_size_ = size; }
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void FakeSetDebugFrameOffset(uint64_t offset) { debug_frame_offset_ = offset; }
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void FakeSetDebugFrameSize(uint64_t size) { debug_frame_size_ = size; }
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};
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class ElfInterfaceArmFake : public ElfInterfaceArm {
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public:
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ElfInterfaceArmFake(Memory* memory) : ElfInterfaceArm(memory) {}
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virtual ~ElfInterfaceArmFake() = default;
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void FakeSetStartOffset(uint64_t offset) { start_offset_ = offset; }
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void FakeSetTotalEntries(size_t entries) { total_entries_ = entries; }
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_TESTS_ELF_FAKE_H
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