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 30 class 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 40 class 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 55 class 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
