// Copyright 2013 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_ARM64_DISASM_ARM64_H_
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#define V8_ARM64_DISASM_ARM64_H_
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#include "src/arm64/assembler-arm64.h"
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#include "src/arm64/decoder-arm64.h"
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#include "src/arm64/instructions-arm64.h"
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#include "src/globals.h"
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#include "src/utils.h"
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namespace v8 {
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namespace internal {
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class DisassemblingDecoder : public DecoderVisitor {
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public:
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DisassemblingDecoder();
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DisassemblingDecoder(char* text_buffer, int buffer_size);
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virtual ~DisassemblingDecoder();
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char* GetOutput();
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// Declare all Visitor functions.
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#define DECLARE(A) void Visit##A(Instruction* instr);
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VISITOR_LIST(DECLARE)
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#undef DECLARE
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protected:
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virtual void ProcessOutput(Instruction* instr);
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// Default output functions. The functions below implement a default way of
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// printing elements in the disassembly. A sub-class can override these to
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// customize the disassembly output.
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// Prints the name of a register.
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virtual void AppendRegisterNameToOutput(const CPURegister& reg);
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void Format(Instruction* instr, const char* mnemonic, const char* format);
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void Substitute(Instruction* instr, const char* string);
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int SubstituteField(Instruction* instr, const char* format);
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int SubstituteRegisterField(Instruction* instr, const char* format);
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int SubstituteImmediateField(Instruction* instr, const char* format);
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int SubstituteLiteralField(Instruction* instr, const char* format);
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int SubstituteBitfieldImmediateField(Instruction* instr, const char* format);
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int SubstituteShiftField(Instruction* instr, const char* format);
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int SubstituteExtendField(Instruction* instr, const char* format);
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int SubstituteConditionField(Instruction* instr, const char* format);
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int SubstitutePCRelAddressField(Instruction* instr, const char* format);
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int SubstituteBranchTargetField(Instruction* instr, const char* format);
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int SubstituteLSRegOffsetField(Instruction* instr, const char* format);
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int SubstitutePrefetchField(Instruction* instr, const char* format);
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int SubstituteBarrierField(Instruction* instr, const char* format);
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bool RdIsZROrSP(Instruction* instr) const {
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return (instr->Rd() == kZeroRegCode);
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}
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bool RnIsZROrSP(Instruction* instr) const {
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return (instr->Rn() == kZeroRegCode);
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}
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bool RmIsZROrSP(Instruction* instr) const {
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return (instr->Rm() == kZeroRegCode);
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}
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bool RaIsZROrSP(Instruction* instr) const {
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return (instr->Ra() == kZeroRegCode);
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}
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bool IsMovzMovnImm(unsigned reg_size, uint64_t value);
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void ResetOutput();
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void AppendToOutput(const char* string, ...);
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char* buffer_;
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uint32_t buffer_pos_;
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uint32_t buffer_size_;
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bool own_buffer_;
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};
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class PrintDisassembler : public DisassemblingDecoder {
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public:
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explicit PrintDisassembler(FILE* stream) : stream_(stream) { }
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~PrintDisassembler() { }
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virtual void ProcessOutput(Instruction* instr);
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private:
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FILE *stream_;
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_ARM64_DISASM_ARM64_H_
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