instruction_subset.h

来自「浙江大学的悟空嵌入式系统模拟器」· C头文件 代码 · 共 185 行

/**
 *  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.
 */ 

//=============================================================================
/**
 *  \class    PPC_Instruction_Subset
 *
 *  \brief    Inherit from Core::Instruction
 *
 *  \author  Chenfeng Zhou <[e-mail]>
 *
 *  Created    : <2005-02-10 14:09:33 by Cheney Chow>
 *  Last update: <2005-03-10 20:47:17 by Cheney Chow>
 *
 *  $Id: Instruction_Subset.h,v 1.1 2005/06/16 06:01:46 qilj Exp $
 */
//=============================================================================

#ifndef _PPC_INSTRUCTION_SUBSET_H_
#define _PPC_INSTRUCTION_SUBSET_H_

#include <vector>
#include "Core/Instruction.h"
#include "Types.h"
#include "Utils/Singleton.h"
#include "Utils/Debug.h"
#include "Reg_Utils.h"
#include "Utils/Logger.h"

namespace PPC
{

    class PPC_Instruction_Subset : public Core::Instruction
    {
    protected:
		PPC_Instruction_Subset () {}
        virtual ~PPC_Instruction_Subset () {}

    public:
        //! Init from static operation array;
        void register_instruction (Core::Instruction *[]);

        
        //! Execute instruction recursively;
        virtual void execute (PPC_Instr_T);

	protected:
		//! Return the extension field (1 - 11 from right to left)
		static Core::u32 extract_ext(PPC_Instr_T instr)
		{
			return (instr >> 1) & 0x3ff;
		}

        
    private:
        //! Find the corresponding instruction op
        virtual Core::Instruction *look_up (PPC_Instr_T) = 0; 

    private:
        //std::vector<Core::Instruction*> ops_;

      
    };

    #include "Instruction_Subset_i.h"

	class S_Group_1 : public PPC_Instruction_Subset 
	{
	public:
		S_Group_1() {}
		virtual ~S_Group_1() {}

		virtual void execute (PPC_Instr_T instr)
		{
			 PPC_Instruction_Subset::execute(instr);
		}

	private:
		//! Find the corresponding instruction op
		virtual Core::Instruction *look_up (PPC_Instr_T);

		
	private:
		//! Groups of instruction with same op code
		//! within each group(first 6 bits)
		//static Core::Instruction* op_table[];
	};

	typedef PPC_Singleton<S_Group_1> op_group_1;

	class S_Group_2 : public PPC_Instruction_Subset 
	{
    private:
        enum {TABLE_SIZE = 1015};
        
	public:
		S_Group_2();
		virtual ~S_Group_2() {}

		virtual void execute (PPC_Instr_T instr)
		{
			PPC_Instruction_Subset::execute(instr);
		}

	private:
		//! Find the corresponding instruction op
		virtual Core::Instruction *look_up (PPC_Instr_T);

        //! Init op_table;
        void init_op_table();

	private:
		//! Groups of instruction with same op code
		//! within each group(first 6 bits)
		static Core::Instruction* op_table_[TABLE_SIZE];
	};

	typedef PPC_Singleton<S_Group_2> op_group_2;

	class S_Group_f_1 : public PPC_Instruction_Subset 
	{
	public:
		S_Group_f_1() {}
		virtual ~S_Group_f_1() {}

		virtual void execute (PPC_Instr_T instr)
		{
			//PPC_Instruction_Subset::execute(instr);
			PPC_ERROR("float group not implemented!\n");
		}

	private:
		//! Find the corresponding instruction op
		virtual Core::Instruction *look_up (PPC_Instr_T) {return NULL;}

	private:
		//! Groups of instruction with same op code
		//! within each group(first 6 bits)
		static Core::Instruction* op_table_[];
	};

	typedef PPC_Singleton<S_Group_f_1> op_group_f_1;

	class S_Group_f_2 : public PPC_Instruction_Subset 
	{
	public:
		S_Group_f_2() {}
		virtual ~S_Group_f_2() {}

		virtual void execute (PPC_Instr_T instr)
		{
			//PPC_Instruction_Subset::execute(instr);
			PPC_ERROR("float group not implemented!\n");
		}

	private:
		//! Find the corresponding instruction op
		virtual Core::Instruction *look_up (PPC_Instr_T) {return NULL;}

	private:
		//! Groups of instruction with same op code
		//! within each group(first 6 bits)
		static Core::Instruction* op_table_[];
	};

	typedef PPC_Singleton<S_Group_f_2> op_group_f_2;
} // namespace PPC

#endif