1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef DFX_ACCESSORS_H 17 #define DFX_ACCESSORS_H 18 19 #include <atomic> 20 #include <cstdint> 21 #include <memory> 22 #include <string> 23 #include "dfx_define.h" 24 #include "unwind_context.h" 25 26 #if is_mingw 27 #ifndef UNWIND_BYTE_ORDER 28 #define UNWIND_BYTE_ORDER -1 // unknown 29 #endif 30 #endif 31 32 namespace OHOS { 33 namespace HiviewDFX { 34 class DfxAccessors { 35 public: bigEndian_(bigEndian)36 DfxAccessors(int bigEndian = UNWIND_BYTE_ORDER) : bigEndian_(bigEndian) {} 37 virtual ~DfxAccessors() = default; 38 39 virtual int AccessMem(uintptr_t addr, uintptr_t *val, void *arg) = 0; 40 virtual int AccessReg(int regIdx, uintptr_t *val, void *arg) = 0; 41 virtual int FindUnwindTable(uintptr_t pc, UnwindTableInfo& uti, void *arg) = 0; 42 43 int bigEndian_ = UNWIND_BYTE_ORDER; 44 }; 45 46 class DfxAccessorsLocal : public DfxAccessors { 47 public: 48 DfxAccessorsLocal() = default; 49 virtual ~DfxAccessorsLocal() = default; 50 static bool IsValidFrame(uintptr_t addr, uintptr_t stackBottom, uintptr_t stackTop); 51 52 int AccessMem(uintptr_t addr, uintptr_t *val, void *arg) override; 53 int AccessReg(int regIdx, uintptr_t *val, void *arg) override; 54 int FindUnwindTable(uintptr_t pc, UnwindTableInfo& uti, void *arg) override; 55 }; 56 57 class DfxAccessorsRemote : public DfxAccessors { 58 public: 59 DfxAccessorsRemote() = default; 60 virtual ~DfxAccessorsRemote() = default; 61 62 int AccessMem(uintptr_t addr, uintptr_t *val, void *arg) override; 63 int AccessReg(int regIdx, uintptr_t *val, void *arg) override; 64 int FindUnwindTable(uintptr_t pc, UnwindTableInfo& uti, void *arg) override; 65 }; 66 67 class DfxAccessorsCustomize : public DfxAccessors { 68 public: DfxAccessorsCustomize(std::shared_ptr<UnwindAccessors> accessors)69 DfxAccessorsCustomize(std::shared_ptr<UnwindAccessors> accessors) : accessors_(accessors) {} 70 virtual ~DfxAccessorsCustomize() = default; 71 72 int AccessMem(uintptr_t addr, uintptr_t *val, void *arg) override; 73 int AccessReg(int regIdx, uintptr_t *val, void *arg) override; 74 int FindUnwindTable(uintptr_t pc, UnwindTableInfo& uti, void *arg) override; 75 private: 76 std::shared_ptr<UnwindAccessors> accessors_; 77 }; 78 } // namespace HiviewDFX 79 } // namespace OHOS 80 #endif 81