1// Copyright 2013, ARM Limited 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are met: 6// 7// * Redistributions of source code must retain the above copyright notice, 8// this list of conditions and the following disclaimer. 9// * Redistributions in binary form must reproduce the above copyright notice, 10// this list of conditions and the following disclaimer in the documentation 11// and/or other materials provided with the distribution. 12// * Neither the name of ARM Limited nor the names of its contributors may be 13// used to endorse or promote products derived from this software without 14// specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND 17// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 20// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 27#ifndef VIXL_A64_DISASM_A64_H 28#define VIXL_A64_DISASM_A64_H 29 30#include "globals-vixl.h" 31#include "utils-vixl.h" 32#include "instructions-a64.h" 33#include "decoder-a64.h" 34 35namespace vixl { 36 37class Disassembler: public DecoderVisitor { 38 public: 39 Disassembler(); 40 Disassembler(char* text_buffer, int buffer_size); 41 virtual ~Disassembler(); 42 char* GetOutput(); 43 44 // Declare all Visitor functions. 45 #define DECLARE(A) void Visit##A(Instruction* instr); 46 VISITOR_LIST(DECLARE) 47 #undef DECLARE 48 49 protected: 50 virtual void ProcessOutput(Instruction* instr); 51 52 private: 53 void Format(Instruction* instr, const char* mnemonic, const char* format); 54 void Substitute(Instruction* instr, const char* string); 55 int SubstituteField(Instruction* instr, const char* format); 56 int SubstituteRegisterField(Instruction* instr, const char* format); 57 int SubstituteImmediateField(Instruction* instr, const char* format); 58 int SubstituteLiteralField(Instruction* instr, const char* format); 59 int SubstituteBitfieldImmediateField(Instruction* instr, const char* format); 60 int SubstituteShiftField(Instruction* instr, const char* format); 61 int SubstituteExtendField(Instruction* instr, const char* format); 62 int SubstituteConditionField(Instruction* instr, const char* format); 63 int SubstitutePCRelAddressField(Instruction* instr, const char* format); 64 int SubstituteBranchTargetField(Instruction* instr, const char* format); 65 int SubstituteLSRegOffsetField(Instruction* instr, const char* format); 66 int SubstitutePrefetchField(Instruction* instr, const char* format); 67 int SubstituteBarrierField(Instruction* instr, const char* format); 68 69 inline bool RdIsZROrSP(Instruction* instr) const { 70 return (instr->Rd() == kZeroRegCode); 71 } 72 73 inline bool RnIsZROrSP(Instruction* instr) const { 74 return (instr->Rn() == kZeroRegCode); 75 } 76 77 inline bool RmIsZROrSP(Instruction* instr) const { 78 return (instr->Rm() == kZeroRegCode); 79 } 80 81 inline bool RaIsZROrSP(Instruction* instr) const { 82 return (instr->Ra() == kZeroRegCode); 83 } 84 85 bool IsMovzMovnImm(unsigned reg_size, uint64_t value); 86 87 void ResetOutput(); 88 void AppendToOutput(const char* string, ...); 89 90 char* buffer_; 91 uint32_t buffer_pos_; 92 uint32_t buffer_size_; 93 bool own_buffer_; 94}; 95 96 97class PrintDisassembler: public Disassembler { 98 public: 99 explicit PrintDisassembler(FILE* stream) : stream_(stream) { } 100 ~PrintDisassembler() { } 101 102 protected: 103 virtual void ProcessOutput(Instruction* instr); 104 105 private: 106 FILE *stream_; 107}; 108} // namespace vixl 109 110#endif // VIXL_A64_DISASM_A64_H 111