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

// scBooth.h: interface for the scBooth class.

//

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

#include<systemc.h>

#include"scTypes.h"

enum MUL_OP {M_MUL = 0x0, M_MLA = 0x1, M_UMULL = 0x4, M_UMLAL = 0x5,

             M_SMULL = 0x6, M_SMLAL = 0x7};

class scBooth  :public sc_module

{

public:

        sc_in<uint32_t> a;

    sc_in<uint32_t> b;

        sc_out<uint32_t> out;

public:

        void entry();

        SC_HAS_PROCESS(scBooth);//

        scBooth(sc_module_name name) : sc_module(name)

    {

          SC_METHOD(entry);

                  sensitive<<a<<b;

    }

        virtual ~scBooth();

private:

        void carry_save_adder_32(uint32_t a, uint32_t b, uint32_t cin,

                         uint32_t *res, uint32_t *cout);

        void four_stage_booth(uint32_t* part_sum_hi, uint32_t* part_sum_lo,

                      uint32_t* part_carry_hi, uint32_t* part_carry_lo,

                      uint32_t mult, uint32_t N, bool_t* carry,

                      uint32_t* multiplier, bool_t bSign);

        void booth_one_stage(uint32_t* part_sum_hi, uint32_t* part_sum_lo,

                     uint32_t* part_carry_hi, uint32_t* part_carry_lo,

                     uint32_t mult, uint32_t N, bool_t* carry,

                     uint32_t multiplier, bool_t bSign);

};