/*
*  Copyright (c) 2005 Zhejiang University, P.R.China
*
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ 

//=============================================================================
/**
*  \file    Processor/MU0/Instruction.h
*
*  $Id: Instruction.h,v 1.2 2005/02/21 09:53:26 kehc Exp $
*
*  \author  Huacheng Ke <sese_zju@yahoo.com.cn>
*/
//=============================================================================

#ifndef MU0__INSTRUCTION_H_INCLUDED
#define MU0__INSTRUCTION_H_INCLUDED

#include <Core/Instruction.h>

namespace MU0 { 

	class CPU;

	class Instruction : public Core::Instruction
	{
	public:
		enum
		{
			LDA = 0x0,
			STO = 0x1,
			ADD = 0x2,
			SUB = 0x3,
			JMP = 0x4,
			JGE = 0x5,
			JNE = 0x6,
			STP = 0x7
		};

		CPU & get_cpu(void) const;

		virtual void execute(Core::Instruction_Unit binary);

		void on_LDA(int op, int operand);
		void on_STO(int op, int operand);
		void on_ADD(int op, int operand);
		void on_SUB(int op, int operand);
		void on_JMP(int op, int operand);
		void on_JGE(int op, int operand);
		void on_JNE(int op, int operand);
		void on_STP(int op, int operand);


		DECLARE_SINGLETON(Instruction)

	};

	class Instruction_Set : public Core::Instruction_Set
	{
	public:

		virtual void register_instructions();

	protected:

		virtual Core::Instruction * classify(Core::Instruction_Unit binary);

		DECLARE_SINGLETON(Instruction_Set)
	};

} //namespace

#endif