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_SYMBOLS_H 18 #define _LIBUNWINDSTACK_SYMBOLS_H 19 20 #include <stdint.h> 21 22 #include <string> 23 #include <vector> 24 25 namespace unwindstack { 26 27 // Forward declaration. 28 class Memory; 29 30 class Symbols { 31 struct Info { InfoInfo32 Info(uint64_t start_offset, uint64_t end_offset, uint64_t str_offset) 33 : start_offset(start_offset), end_offset(end_offset), str_offset(str_offset) {} 34 uint64_t start_offset; 35 uint64_t end_offset; 36 uint64_t str_offset; 37 }; 38 39 public: 40 Symbols(uint64_t offset, uint64_t size, uint64_t entry_size, uint64_t str_offset, 41 uint64_t str_size); 42 virtual ~Symbols() = default; 43 44 const Info* GetInfoFromCache(uint64_t addr); 45 46 template <typename SymType> 47 bool GetName(uint64_t addr, Memory* elf_memory, std::string* name, uint64_t* func_offset); 48 49 template <typename SymType> 50 bool GetGlobal(Memory* elf_memory, const std::string& name, uint64_t* memory_address); 51 ClearCache()52 void ClearCache() { 53 symbols_.clear(); 54 cur_offset_ = offset_; 55 } 56 57 private: 58 uint64_t cur_offset_; 59 uint64_t offset_; 60 uint64_t end_; 61 uint64_t entry_size_; 62 uint64_t str_offset_; 63 uint64_t str_end_; 64 65 std::vector<Info> symbols_; 66 }; 67 68 } // namespace unwindstack 69 70 #endif // _LIBUNWINDSTACK_SYMBOLS_H 71