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/*
* Copyright (C) 2017 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.
*/
#ifndef _LIBUNWINDSTACK_UNWINDER_H
#define _LIBUNWINDSTACK_UNWINDER_H
#include <stdint.h>
#include <sys/types.h>
#include <memory>
#include <string>
#include <vector>
#include <unwindstack/Maps.h>
#include <unwindstack/Memory.h>
#include <unwindstack/Regs.h>
namespace unwindstack {
// Forward declarations.
class Elf;
class JitDebug;
enum ArchEnum : uint8_t;
struct FrameData {
size_t num;
uint64_t rel_pc;
uint64_t pc;
uint64_t sp;
uint64_t dex_pc;
std::string function_name;
uint64_t function_offset;
std::string map_name;
uint64_t map_offset;
uint64_t map_start;
uint64_t map_end;
uint64_t map_load_bias;
int map_flags;
};
class Unwinder {
public:
Unwinder(size_t max_frames, Maps* maps, Regs* regs, std::shared_ptr<Memory> process_memory)
: max_frames_(max_frames), maps_(maps), regs_(regs), process_memory_(process_memory) {
frames_.reserve(max_frames);
}
~Unwinder() = default;
void Unwind(const std::vector<std::string>* initial_map_names_to_skip = nullptr,
const std::vector<std::string>* map_suffixes_to_ignore = nullptr);
size_t NumFrames() { return frames_.size(); }
const std::vector<FrameData>& frames() { return frames_; }
std::string FormatFrame(size_t frame_num);
static std::string FormatFrame(const FrameData& frame, bool is32bit);
void SetJitDebug(JitDebug* jit_debug, ArchEnum arch);
private:
void FillInFrame(MapInfo* map_info, Elf* elf, uint64_t adjusted_rel_pc, uint64_t adjusted_pc);
size_t max_frames_;
Maps* maps_;
Regs* regs_;
std::vector<FrameData> frames_;
std::shared_ptr<Memory> process_memory_;
JitDebug* jit_debug_ = nullptr;
};
} // namespace unwindstack
#endif // _LIBUNWINDSTACK_UNWINDER_H
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