Subversion Repositories scarm

////////////////////////////////////////////////////////////////////////////////

// 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

//////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////              

//          

//  Original Author: Allen Tao Zhong,

//  University of Electronic Science and Technology in China

//  email: zhong@opencores.org

//  info   This is a SystemC ARM model 

//   

//

///////////////////////////////////////////////////////////////////////////////

/*****************************************************************************

  scBarrelShifter.h: interface for the scBarrelShifter class.

  Original Author: Allen Tao Zhong, University of Electronic Science and

                   Technology in China

 *****************************************************************************/

#ifndef scBarrelShifter_H

#define scBarrelShifter_H

#include"scTypes.h"

#include<systemc.h>

#include<sc_mslib.h>

#include ".\components\registers\scRegisterFile.h"

#include".\instructions\scARMInstruction.h"

//////////////////////////////////////

//

//  parameters of barrelshifter

//

////////////////////////////////////////

enum SHIFT {S_LSL = 0, S_LSR = 1, S_ASR = 2, S_ROR, S_RRX, S_ASL};

//control signals for barrel shifter

//////////////////////////////

//the interface of barrelshifter

//////////////////////////////

class scBarrelShifter:public sc_module

{

public://ports

     sc_in<uint32_t> in_n_Val;

         sc_in<SHIFT>  in_SHIFT_TYPE;

         sc_in<uint32_t>  in_n_Dist;

         sc_out<uint32_t> out_n_NewVal;

         sc_outmaster<REGS>    out_CPSR;

         sc_inoutslave<uint32_t>  inout_n_Flag;

public:

        SC_HAS_PROCESS(scBarrelShifter);//

        scBarrelShifter(sc_module_name name) : sc_module(name)

    {

        SC_METHOD(entry);

                sensitive<<in_n_Val<<in_SHIFT_TYPE<<in_n_Dist;

    }

private://data

        uint32_t m_nShiftCarryBit;

        uint32_t m_nShiftType;

        uint32_t m_nShiftDist;

private:

        void entry(void);

uint32_t Shift(uint32_t nVal, enum SHIFT type, int nDist);// behavoir implementation

};

#endif