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| 1 // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are |
| 4 // met: |
| 5 // |
| 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided |
| 11 // with the distribution. |
| 12 // * Neither the name of Google Inc. nor the names of its |
| 13 // contributors may be used to endorse or promote products derived |
| 14 // from this software without specific prior written permission. |
| 15 // |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 |
| 28 #ifndef V8_A64_DISASM_A64_H |
| 29 #define V8_A64_DISASM_A64_H |
| 30 |
| 31 #include "v8.h" |
| 32 |
| 33 #include "globals.h" |
| 34 #include "utils.h" |
| 35 #include "instructions-a64.h" |
| 36 #include "decoder-a64.h" |
| 37 |
| 38 namespace v8 { |
| 39 namespace internal { |
| 40 |
| 41 |
| 42 class Disassembler: public DecoderVisitor { |
| 43 public: |
| 44 Disassembler(); |
| 45 Disassembler(char* text_buffer, int buffer_size); |
| 46 virtual ~Disassembler(); |
| 47 char* GetOutput(); |
| 48 |
| 49 // Declare all Visitor functions. |
| 50 #define DECLARE(A) void Visit##A(Instruction* instr); |
| 51 VISITOR_LIST(DECLARE) |
| 52 #undef DECLARE |
| 53 |
| 54 protected: |
| 55 virtual void ProcessOutput(Instruction* instr); |
| 56 |
| 57 void Format(Instruction* instr, const char* mnemonic, const char* format); |
| 58 void Substitute(Instruction* instr, const char* string); |
| 59 int SubstituteField(Instruction* instr, const char* format); |
| 60 int SubstituteRegisterField(Instruction* instr, const char* format); |
| 61 int SubstituteImmediateField(Instruction* instr, const char* format); |
| 62 int SubstituteLiteralField(Instruction* instr, const char* format); |
| 63 int SubstituteBitfieldImmediateField(Instruction* instr, const char* format); |
| 64 int SubstituteShiftField(Instruction* instr, const char* format); |
| 65 int SubstituteExtendField(Instruction* instr, const char* format); |
| 66 int SubstituteConditionField(Instruction* instr, const char* format); |
| 67 int SubstitutePCRelAddressField(Instruction* instr, const char* format); |
| 68 int SubstituteBranchTargetField(Instruction* instr, const char* format); |
| 69 int SubstituteLSRegOffsetField(Instruction* instr, const char* format); |
| 70 int SubstitutePrefetchField(Instruction* instr, const char* format); |
| 71 int SubstituteBarrierField(Instruction* instr, const char* format); |
| 72 |
| 73 bool RdIsZROrSP(Instruction* instr) const { |
| 74 return (instr->Rd() == kZeroRegCode); |
| 75 } |
| 76 |
| 77 bool RnIsZROrSP(Instruction* instr) const { |
| 78 return (instr->Rn() == kZeroRegCode); |
| 79 } |
| 80 |
| 81 bool RmIsZROrSP(Instruction* instr) const { |
| 82 return (instr->Rm() == kZeroRegCode); |
| 83 } |
| 84 |
| 85 bool RaIsZROrSP(Instruction* instr) const { |
| 86 return (instr->Ra() == kZeroRegCode); |
| 87 } |
| 88 |
| 89 bool IsMovzMovnImm(unsigned reg_size, uint64_t value); |
| 90 |
| 91 void ResetOutput(); |
| 92 void AppendToOutput(const char* string, ...); |
| 93 |
| 94 char* buffer_; |
| 95 uint32_t buffer_pos_; |
| 96 uint32_t buffer_size_; |
| 97 bool own_buffer_; |
| 98 }; |
| 99 |
| 100 |
| 101 class PrintDisassembler: public Disassembler { |
| 102 public: |
| 103 explicit PrintDisassembler(FILE* stream) : stream_(stream) { } |
| 104 ~PrintDisassembler() { } |
| 105 |
| 106 virtual void ProcessOutput(Instruction* instr); |
| 107 |
| 108 private: |
| 109 FILE *stream_; |
| 110 }; |
| 111 |
| 112 |
| 113 } } // namespace v8::internal |
| 114 |
| 115 #endif // V8_A64_DISASM_A64_H |
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