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_ELF_H 18 #define _LIBUNWINDSTACK_ELF_H 19 20 #include <stddef.h> 21 22 #include <memory> 23 #include <string> 24 25 #include "ElfInterface.h" 26 #include "Memory.h" 27 28 #if !defined(EM_AARCH64) 29 #define EM_AARCH64 183 30 #endif 31 32 // Forward declaration. 33 class Regs; 34 35 class Elf { 36 public: Elf(Memory * memory)37 Elf(Memory* memory) : memory_(memory) {} 38 virtual ~Elf() = default; 39 40 bool Init(); 41 42 void InitGnuDebugdata(); 43 GetSoname(std::string * name)44 bool GetSoname(std::string* name) { 45 return valid_ && interface_->GetSoname(name); 46 } 47 GetFunctionName(uint64_t,std::string *,uint64_t *)48 bool GetFunctionName(uint64_t, std::string*, uint64_t*) { 49 return false; 50 } 51 Step(uint64_t rel_pc,Regs * regs,Memory * process_memory)52 bool Step(uint64_t rel_pc, Regs* regs, Memory* process_memory) { 53 return valid_ && interface_->Step(rel_pc, regs, process_memory); 54 } 55 56 ElfInterface* CreateInterfaceFromMemory(Memory* memory); 57 valid()58 bool valid() { return valid_; } 59 machine_type()60 uint32_t machine_type() { return machine_type_; } 61 class_type()62 uint8_t class_type() { return class_type_; } 63 memory()64 Memory* memory() { return memory_.get(); } 65 interface()66 ElfInterface* interface() { return interface_.get(); } 67 68 static bool IsValidElf(Memory* memory); 69 70 protected: 71 bool valid_ = false; 72 std::unique_ptr<ElfInterface> interface_; 73 std::unique_ptr<Memory> memory_; 74 uint32_t machine_type_; 75 uint8_t class_type_; 76 }; 77 78 #endif // _LIBUNWINDSTACK_ELF_H 79