98984b41da
Changes: - Change the register type from int16_t to uint32_t for the location data and the Eval processing. This is because the special dex pc is > 65535. - Add the ability for Dwarf register location information to point to a register that is itself a Dwarf location register. - Add dex_pc to the frame information. - Modify the unwind tool to print the dex pc if non-zero. This does not implement the printing of the dex information in anything but the unwind tool. It's not the final form of this printing. Bug: 72070049 Test: Ran new unit tests. Test: Dumped stack while in interpreter running 137-cfi art test and Test: verified dex pc is set to non-zero. Change-Id: I6ce8a6b577fb4f92abacbd433b1f68977e272542
90 lines
2.3 KiB
C++
90 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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uint64_t dex_pc;
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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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