1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_ARM64_DISASM_ARM64_H 6 #define V8_ARM64_DISASM_ARM64_H 7 8 #include "src/arm64/decoder-arm64.h" 9 #include "src/arm64/instructions-arm64.h" 10 #include "src/globals.h" 11 #include "src/utils.h" 12 13 namespace v8 { 14 namespace internal { 15 16 17 class DisassemblingDecoder : public DecoderVisitor { 18 public: 19 DisassemblingDecoder(); 20 DisassemblingDecoder(char* text_buffer, int buffer_size); 21 virtual ~DisassemblingDecoder(); 22 char* GetOutput(); 23 24 // Declare all Visitor functions. 25 #define DECLARE(A) void Visit##A(Instruction* instr); 26 VISITOR_LIST(DECLARE) 27 #undef DECLARE 28 29 protected: 30 virtual void ProcessOutput(Instruction* instr); 31 32 void Format(Instruction* instr, const char* mnemonic, const char* format); 33 void Substitute(Instruction* instr, const char* string); 34 int SubstituteField(Instruction* instr, const char* format); 35 int SubstituteRegisterField(Instruction* instr, const char* format); 36 int SubstituteImmediateField(Instruction* instr, const char* format); 37 int SubstituteLiteralField(Instruction* instr, const char* format); 38 int SubstituteBitfieldImmediateField(Instruction* instr, const char* format); 39 int SubstituteShiftField(Instruction* instr, const char* format); 40 int SubstituteExtendField(Instruction* instr, const char* format); 41 int SubstituteConditionField(Instruction* instr, const char* format); 42 int SubstitutePCRelAddressField(Instruction* instr, const char* format); 43 int SubstituteBranchTargetField(Instruction* instr, const char* format); 44 int SubstituteLSRegOffsetField(Instruction* instr, const char* format); 45 int SubstitutePrefetchField(Instruction* instr, const char* format); 46 int SubstituteBarrierField(Instruction* instr, const char* format); 47 RdIsZROrSP(Instruction * instr)48 bool RdIsZROrSP(Instruction* instr) const { 49 return (instr->Rd() == kZeroRegCode); 50 } 51 RnIsZROrSP(Instruction * instr)52 bool RnIsZROrSP(Instruction* instr) const { 53 return (instr->Rn() == kZeroRegCode); 54 } 55 RmIsZROrSP(Instruction * instr)56 bool RmIsZROrSP(Instruction* instr) const { 57 return (instr->Rm() == kZeroRegCode); 58 } 59 RaIsZROrSP(Instruction * instr)60 bool RaIsZROrSP(Instruction* instr) const { 61 return (instr->Ra() == kZeroRegCode); 62 } 63 64 bool IsMovzMovnImm(unsigned reg_size, uint64_t value); 65 66 void ResetOutput(); 67 void AppendToOutput(const char* string, ...); 68 69 char* buffer_; 70 uint32_t buffer_pos_; 71 uint32_t buffer_size_; 72 bool own_buffer_; 73 }; 74 75 76 class PrintDisassembler : public DisassemblingDecoder { 77 public: PrintDisassembler(FILE * stream)78 explicit PrintDisassembler(FILE* stream) : stream_(stream) { } ~PrintDisassembler()79 ~PrintDisassembler() { } 80 81 virtual void ProcessOutput(Instruction* instr); 82 83 private: 84 FILE *stream_; 85 }; 86 87 88 } // namespace internal 89 } // namespace v8 90 91 #endif // V8_ARM64_DISASM_ARM64_H 92