Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 _LIBUNWINDSTACK_DWARF_OP_H |
| 18 | #define _LIBUNWINDSTACK_DWARF_OP_H |
| 19 | |
| 20 | #include <stdint.h> |
| 21 | |
| 22 | #include <deque> |
| 23 | #include <string> |
| 24 | #include <type_traits> |
| 25 | #include <vector> |
| 26 | |
Christopher Ferris | 2fcf4cf | 2018-01-23 17:52:23 -0800 | [diff] [blame] | 27 | #include <unwindstack/DwarfError.h> |
| 28 | |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 29 | #include "DwarfEncoding.h" |
Christopher Ferris | 559c7f2 | 2018-02-12 20:18:03 -0800 | [diff] [blame] | 30 | #include "RegsInfo.h" |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 31 | |
| 32 | namespace unwindstack { |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 33 | |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 34 | // Forward declarations. |
| 35 | class DwarfMemory; |
| 36 | class Memory; |
| 37 | template <typename AddressType> |
Christopher Ferris | 7b8e467 | 2017-06-01 17:55:25 -0700 | [diff] [blame] | 38 | class RegsImpl; |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 39 | |
| 40 | template <typename AddressType> |
| 41 | class DwarfOp { |
| 42 | // Signed version of AddressType |
| 43 | typedef typename std::make_signed<AddressType>::type SignedType; |
| 44 | |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 45 | public: |
| 46 | DwarfOp(DwarfMemory* memory, Memory* regular_memory) |
| 47 | : memory_(memory), regular_memory_(regular_memory) {} |
| 48 | virtual ~DwarfOp() = default; |
| 49 | |
Christopher Ferris | 559c7f2 | 2018-02-12 20:18:03 -0800 | [diff] [blame] | 50 | bool Decode(); |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 51 | |
Christopher Ferris | 559c7f2 | 2018-02-12 20:18:03 -0800 | [diff] [blame] | 52 | bool Eval(uint64_t start, uint64_t end); |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 53 | |
| 54 | void GetLogInfo(uint64_t start, uint64_t end, std::vector<std::string>* lines); |
| 55 | |
| 56 | AddressType StackAt(size_t index) { return stack_[index]; } |
| 57 | size_t StackSize() { return stack_.size(); } |
| 58 | |
Christopher Ferris | 559c7f2 | 2018-02-12 20:18:03 -0800 | [diff] [blame] | 59 | void set_regs_info(RegsInfo<AddressType>* regs_info) { regs_info_ = regs_info; } |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 60 | |
Christopher Ferris | 2fcf4cf | 2018-01-23 17:52:23 -0800 | [diff] [blame] | 61 | const DwarfErrorData& last_error() { return last_error_; } |
| 62 | DwarfErrorCode LastErrorCode() { return last_error_.code; } |
| 63 | uint64_t LastErrorAddress() { return last_error_.address; } |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 64 | |
Christopher Ferris | 559c7f2 | 2018-02-12 20:18:03 -0800 | [diff] [blame] | 65 | bool dex_pc_set() { return dex_pc_set_; } |
| 66 | |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 67 | bool is_register() { return is_register_; } |
| 68 | |
| 69 | uint8_t cur_op() { return cur_op_; } |
| 70 | |
| 71 | Memory* regular_memory() { return regular_memory_; } |
| 72 | |
| 73 | protected: |
| 74 | AddressType OperandAt(size_t index) { return operands_[index]; } |
| 75 | size_t OperandsSize() { return operands_.size(); } |
| 76 | |
| 77 | AddressType StackPop() { |
| 78 | AddressType value = stack_.front(); |
| 79 | stack_.pop_front(); |
| 80 | return value; |
| 81 | } |
| 82 | |
| 83 | private: |
| 84 | DwarfMemory* memory_; |
| 85 | Memory* regular_memory_; |
| 86 | |
Christopher Ferris | 559c7f2 | 2018-02-12 20:18:03 -0800 | [diff] [blame] | 87 | RegsInfo<AddressType>* regs_info_; |
| 88 | bool dex_pc_set_ = false; |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 89 | bool is_register_ = false; |
Christopher Ferris | 2fcf4cf | 2018-01-23 17:52:23 -0800 | [diff] [blame] | 90 | DwarfErrorData last_error_{DWARF_ERROR_NONE, 0}; |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 91 | uint8_t cur_op_; |
| 92 | std::vector<AddressType> operands_; |
| 93 | std::deque<AddressType> stack_; |
| 94 | |
| 95 | inline AddressType bool_to_dwarf_bool(bool value) { return value ? 1 : 0; } |
| 96 | |
| 97 | // Op processing functions. |
| 98 | bool op_deref(); |
| 99 | bool op_deref_size(); |
| 100 | bool op_push(); |
| 101 | bool op_dup(); |
| 102 | bool op_drop(); |
| 103 | bool op_over(); |
| 104 | bool op_pick(); |
| 105 | bool op_swap(); |
| 106 | bool op_rot(); |
| 107 | bool op_abs(); |
| 108 | bool op_and(); |
| 109 | bool op_div(); |
| 110 | bool op_minus(); |
| 111 | bool op_mod(); |
| 112 | bool op_mul(); |
| 113 | bool op_neg(); |
| 114 | bool op_not(); |
| 115 | bool op_or(); |
| 116 | bool op_plus(); |
| 117 | bool op_plus_uconst(); |
| 118 | bool op_shl(); |
| 119 | bool op_shr(); |
| 120 | bool op_shra(); |
| 121 | bool op_xor(); |
| 122 | bool op_bra(); |
| 123 | bool op_eq(); |
| 124 | bool op_ge(); |
| 125 | bool op_gt(); |
| 126 | bool op_le(); |
| 127 | bool op_lt(); |
| 128 | bool op_ne(); |
| 129 | bool op_skip(); |
| 130 | bool op_lit(); |
| 131 | bool op_reg(); |
| 132 | bool op_regx(); |
| 133 | bool op_breg(); |
| 134 | bool op_bregx(); |
| 135 | bool op_nop(); |
| 136 | bool op_not_implemented(); |
| 137 | |
Vic Yang | cc8009f | 2019-01-24 11:00:26 -0800 | [diff] [blame^] | 138 | using OpHandleFuncPtr = bool (DwarfOp::*)(); |
| 139 | static const OpHandleFuncPtr kOpHandleFuncList[]; |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 140 | }; |
| 141 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 142 | } // namespace unwindstack |
| 143 | |
Christopher Ferris | 55d22ef | 2017-04-04 10:41:31 -0700 | [diff] [blame] | 144 | #endif // _LIBUNWINDSTACK_DWARF_OP_H |