CSE2410 Fall 2014 Bounce

// Copyright 2007-2008 the V8 project authors. All rights reserved.

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

//     * Redistributions of source code must retain the above copyright

//       notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

//       copyright notice, this list of conditions and the following

//       disclaimer in the documentation and/or other materials provided

//       with the distribution.

//     * Neither the name of Google Inc. nor the names of its

//       contributors may be used to endorse or promote products derived

//       from this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef V8_DISASM_H_

#define V8_DISASM_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;

};

// 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);

  // 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_