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 #ifndef UNWIND_CONTEXT_H 16 #define UNWIND_CONTEXT_H 17 18 #include <memory> 19 #if is_ohos 20 #include <ucontext.h> 21 #endif 22 23 #include "byte_order.h" 24 #include "dfx_errors.h" 25 #include "unwind_define.h" 26 #include "unwind_loc.h" 27 28 namespace OHOS { 29 namespace HiviewDFX { 30 class DfxMap; 31 class DfxRegs; 32 33 struct UnwindTableInfo { 34 uintptr_t startPc = 0; 35 uintptr_t endPc = 0; 36 uintptr_t gp = 0; /* global-pointer in effect for this entry */ 37 int format = -1; 38 bool isLinear = false; 39 uintptr_t namePtr = 0; 40 uintptr_t segbase = 0; 41 uintptr_t tableLen = 0; 42 uintptr_t tableData = 0; 43 }; 44 45 struct UnwindEntryInfo { 46 uintptr_t startPc; 47 uintptr_t endPc; 48 uintptr_t lsda; 49 uintptr_t handler; 50 uintptr_t gp; 51 int format = -1; 52 int unwindInfoSize; 53 void *unwindInfo; 54 }; 55 56 struct UnwindAccessors { 57 int (*FindUnwindTable)(uintptr_t, UnwindTableInfo &, void *); 58 int (*AccessMem)(uintptr_t, uintptr_t *, void *); 59 int (*AccessReg)(int, uintptr_t *, void *); 60 }; 61 62 struct UnwindContext { 63 bool stackCheck = false; 64 uintptr_t stackBottom = 0; 65 uintptr_t stackTop = 0; 66 int pid; 67 std::shared_ptr<DfxRegs> regs = nullptr; 68 std::shared_ptr<DfxMap> map = nullptr; 69 struct UnwindTableInfo di; 70 }; 71 } // namespace HiviewDFX 72 } // namespace OHOS 73 #endif 74