1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _LIBBACKTRACE_UNWIND_STACK_H
18#define _LIBBACKTRACE_UNWIND_STACK_H
19
20#include <stdint.h>
21
22#include <string>
23
24#include <backtrace/BacktraceMap.h>
25#include <unwindstack/Memory.h>
26
27#include "BacktraceCurrent.h"
28#include "BacktracePtrace.h"
29
30class UnwindStackCurrent : public BacktraceCurrent {
31 public:
32  UnwindStackCurrent(pid_t pid, pid_t tid, BacktraceMap* map);
33  virtual ~UnwindStackCurrent() = default;
34
35  std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset) override;
36
37  bool UnwindFromContext(size_t num_ignore_frames, void* ucontext) override;
38};
39
40class UnwindStackPtrace : public BacktracePtrace {
41 public:
42  UnwindStackPtrace(pid_t pid, pid_t tid, BacktraceMap* map);
43  virtual ~UnwindStackPtrace() = default;
44
45  bool Unwind(size_t num_ignore_frames, void* context) override;
46
47  std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset) override;
48
49  size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override;
50
51 private:
52  unwindstack::MemoryRemote memory_;
53};
54
55class UnwindStackOffline : public Backtrace {
56 public:
57  UnwindStackOffline(ArchEnum arch, pid_t pid, pid_t tid, BacktraceMap* map, bool map_shared);
58
59  bool Unwind(size_t num_ignore_frames, void* context) override;
60
61  std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset);
62
63  size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override;
64
65  bool ReadWord(uint64_t ptr, word_t* out_value) override;
66
67 private:
68  ArchEnum arch_;
69};
70
71#endif  // _LIBBACKTRACE_UNWIND_STACK_H
72