150db124f3
Changes: - New JitDebug class to handle all of the jit gdb interface. - Add unit tests for all, along with new offline test using debug data. - Add new Memory type called MemoryOfflineParts that has multiple MemoryOffline objects to support the offline test. - Update the tools to use the JitDebug object. - Modify libbacktrace to use the JitDebug, but only looking in libart.so and libartd.so. - Change the Format32Bits to Is32Bit since it's more accurate and I use it in a different context where original name didn't make sense. - Add a new function to find global variables in an elf file (GetGlobalVariable). - Add a new function to determine if a pc is valid for this elf (IsValidPc). Bug: 68396769 Test: Ran new unit tests. Added new offline test that uses jit debug data. Test: Ran art test that generates jit data and verified a crash unwinds Test: through the jit data. Change-Id: I6e7ee2f5bab2242028a06feece156dff21c0a974
89 lines
2.3 KiB
C++
89 lines
2.3 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_UNWINDER_H
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#define _LIBUNWINDSTACK_UNWINDER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <memory>
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#include <string>
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#include <vector>
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#include <unwindstack/Maps.h>
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#include <unwindstack/Memory.h>
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#include <unwindstack/Regs.h>
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namespace unwindstack {
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// Forward declarations.
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class Elf;
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class JitDebug;
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enum ArchEnum : uint8_t;
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struct FrameData {
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size_t num;
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uint64_t rel_pc;
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uint64_t pc;
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uint64_t sp;
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std::string function_name;
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uint64_t function_offset;
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std::string map_name;
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uint64_t map_offset;
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uint64_t map_start;
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uint64_t map_end;
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uint64_t map_load_bias;
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int map_flags;
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};
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class Unwinder {
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public:
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Unwinder(size_t max_frames, Maps* maps, Regs* regs, std::shared_ptr<Memory> process_memory)
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: max_frames_(max_frames), maps_(maps), regs_(regs), process_memory_(process_memory) {
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frames_.reserve(max_frames);
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}
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~Unwinder() = default;
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void Unwind(const std::vector<std::string>* initial_map_names_to_skip = nullptr,
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const std::vector<std::string>* map_suffixes_to_ignore = nullptr);
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size_t NumFrames() { return frames_.size(); }
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const std::vector<FrameData>& frames() { return frames_; }
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std::string FormatFrame(size_t frame_num);
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static std::string FormatFrame(const FrameData& frame, bool is32bit);
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void SetJitDebug(JitDebug* jit_debug, ArchEnum arch);
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private:
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void FillInFrame(MapInfo* map_info, Elf* elf, uint64_t adjusted_rel_pc, uint64_t adjusted_pc);
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size_t max_frames_;
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Maps* maps_;
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Regs* regs_;
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std::vector<FrameData> frames_;
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std::shared_ptr<Memory> process_memory_;
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JitDebug* jit_debug_ = nullptr;
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_UNWINDER_H
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