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llvm-6502/include/llvm/MC/MCDisassembler.h
Sean Callanan 535f4de469 Quick fix for build errors caused by undefined
NULL.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101180 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13 21:36:35 +00:00

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//===-- llvm/MC/MCDisassembler.h - Disassembler interface -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef MCDISASSEMBLER_H
#define MCDISASSEMBLER_H
#include "llvm/System/DataTypes.h"
namespace llvm {
class MCInst;
class MemoryObject;
class raw_ostream;
struct EDInstInfo;
/// MCDisassembler - Superclass for all disassemblers. Consumes a memory region
/// and provides an array of assembly instructions.
class MCDisassembler {
public:
/// Constructor - Performs initial setup for the disassembler.
MCDisassembler() {}
virtual ~MCDisassembler();
/// getInstruction - Returns the disassembly of a single instruction.
///
/// @param instr - An MCInst to populate with the contents of the
/// instruction.
/// @param size - A value to populate with the size of the instruction, or
/// the number of bytes consumed while attempting to decode
/// an invalid instruction.
/// @param region - The memory object to use as a source for machine code.
/// @param address - The address, in the memory space of region, of the first
/// byte of the instruction.
/// @param vStream - The stream to print warnings and diagnostic messages on.
/// @return - True if the instruction is valid; false otherwise.
virtual bool getInstruction(MCInst& instr,
uint64_t& size,
const MemoryObject &region,
uint64_t address,
raw_ostream &vStream) const = 0;
/// getEDInfo - Returns the enhanced insturction information corresponding to
/// the disassembler.
///
/// @return - An array of instruction information, with one entry for
/// each MCInst opcode this disassembler returns.
/// NULL if there is no info for this target.
virtual EDInstInfo *getEDInfo() const { return (EDInstInfo*)0; }
};
} // namespace llvm
#endif