1 /* 2 * Copyright (C) 2012 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 ART_DISASSEMBLER_DISASSEMBLER_H_ 18 #define ART_DISASSEMBLER_DISASSEMBLER_H_ 19 20 #include <stdint.h> 21 22 #include <iosfwd> 23 24 #include "base/macros.h" 25 #include "instruction_set.h" 26 27 namespace art { 28 29 class DisassemblerOptions { 30 public: 31 // Should the disassembler print absolute or relative addresses. 32 const bool absolute_addresses_; 33 34 // Base addess for calculating relative code offsets when absolute_addresses_ is false. 35 const uint8_t* const base_address_; 36 37 DisassemblerOptions(bool absolute_addresses, const uint8_t* base_address) 38 : absolute_addresses_(absolute_addresses), base_address_(base_address) {} 39 40 private: 41 DISALLOW_COPY_AND_ASSIGN(DisassemblerOptions); 42 }; 43 44 class Disassembler { 45 public: 46 // Creates a Disassembler for the given InstructionSet with the 47 // non-null DisassemblerOptions which become owned by the 48 // Disassembler. 49 static Disassembler* Create(InstructionSet instruction_set, DisassemblerOptions* options); 50 51 virtual ~Disassembler() { 52 delete disassembler_options_; 53 } 54 55 // Dump a single instruction returning the length of that instruction. 56 virtual size_t Dump(std::ostream& os, const uint8_t* begin) = 0; 57 // Dump instructions within a range. 58 virtual void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) = 0; 59 60 protected: 61 explicit Disassembler(DisassemblerOptions* disassembler_options) 62 : disassembler_options_(disassembler_options) { 63 CHECK(disassembler_options_ != nullptr); 64 } 65 66 std::string FormatInstructionPointer(const uint8_t* begin); 67 68 private: 69 DisassemblerOptions* disassembler_options_; 70 DISALLOW_COPY_AND_ASSIGN(Disassembler); 71 }; 72 73 static inline bool HasBitSet(uint32_t value, uint32_t bit) { 74 return (value & (1 << bit)) != 0; 75 } 76 77 } // namespace art 78 79 #endif // ART_DISASSEMBLER_DISASSEMBLER_H_ 80
