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// Copyright 2007-2008 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_DISASM_H_
#define V8_DISASM_H_
#include "src/utils.h"
namespace disasm {
typedef unsigned char byte;
// Interface and default implementation for converting addresses and
// register-numbers to text. The default implementation is machine
// specific.
class NameConverter {
public:
virtual ~NameConverter() {}
virtual const char* NameOfCPURegister(int reg) const;
virtual const char* NameOfByteCPURegister(int reg) const;
virtual const char* NameOfXMMRegister(int reg) const;
virtual const char* NameOfAddress(byte* addr) const;
virtual const char* NameOfConstant(byte* addr) const;
virtual const char* NameInCode(byte* addr) const;
protected:
v8::internal::EmbeddedVector<char, 128> tmp_buffer_;
};
// A generic Disassembler interface
class Disassembler {
public:
// Caller deallocates converter.
explicit Disassembler(const NameConverter& converter);
virtual ~Disassembler();
// Writes one disassembled instruction into 'buffer' (0-terminated).
// Returns the length of the disassembled machine instruction in bytes.
int InstructionDecode(v8::internal::Vector<char> buffer, byte* instruction);
// Disassemblers on ia32/x64 need a separate method for testing, as
// instruction decode method above continues on unimplemented opcodes, and
// does not test the disassemblers. Basic functionality of the method remains
// the same.
int InstructionDecodeForTesting(v8::internal::Vector<char> buffer,
byte* instruction);
// Returns -1 if instruction does not mark the beginning of a constant pool,
// or the number of entries in the constant pool beginning here.
int ConstantPoolSizeAt(byte* instruction);
// Write disassembly into specified file 'f' using specified NameConverter
// (see constructor).
static void Disassemble(FILE* f, byte* begin, byte* end);
private:
const NameConverter& converter_;
DISALLOW_IMPLICIT_CONSTRUCTORS(Disassembler);
};
} // namespace disasm
#endif // V8_DISASM_H_
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