reg_flag.h

浙江大学的悟空嵌入式系统模拟器

/* -*- C++ -*- */

/**
 *  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        Reg_Flag.h
 * @brief       Flag bits in some sprs
 *
 * @author      Chenfeng Zhou <[e-mail]> 
 *
 * Created    : <2005-02-26 15:46:22 by Cheney Chow>
 * Last update: <2005-02-26 19:21:58 by Cheney Chow>
 *
 * $Id: Reg_Flag.h,v 1.1 2005/06/16 06:01:51 qilj Exp $
 */
///==================================================



#ifndef _PPC_REG_FLAG_H_
#define _PPC_REG_FLAG_H_

namespace PPC
{

    class Reg_Flag {
    public:
        static const int CR0_HIGH = 31;
		static const int CR0_LOW  = 28;
        static const int CR0_LT   = 31;
        static const int CR0_GT   = 30;
        static const int CR0_EQ   = 29;
        static const int CR0_SO   = 28; //!< Summary Overflow;

        static const int XER_SO   = 31;
        static const int XER_CA   = 29;
		static int XER_N(int v) {return v & 0x7f;} 

		static const int MSR_RI = 1;
		static const int MSR_ME = 12;
		static const int MSR_PR = 14;
		static const int MSR_EE = 15;
		static const int MSR_POW = 18;
		static const int MSR_RFI_SAVE_MASK = 0xff73;

		static const int MSR_IS = 5;
		static const int MSR_DS = 4;
		
		//! MMU set translation space;
		static const int MMUCR_STS = 16;

		//! MMU related;
		static const int CCR0_CRPE = 27;
		static const int CCR0_PRE = 30;
    };


} // namespace PPC

#endif  // _PPC_REG_FLAG_H_