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

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

//

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

#include<systemc.h>

#include"scTypes.h"

#include".\components\alu\scALU.h"

#include".\components\barrelshifter\scBarrelShifter.h"

//enum ARI {ARI_ALU, ARI_INC, ARI_REG, ARI_NONE};

class scEX :public sc_module

{

public: //ports

        sc_in<bool> in_b_Clock;

        sc_in<uint32_t> in_n_NPC;

        sc_in<bool_t> in_b_Branch;

        sc_out<bool_t> out_b_Flush;

        sc_in<bool_t>  in_b_MEM;

        sc_out<bool_t> out_b_MEM;

//A Bus

        sc_in<OPCODE>   in_OP;

        sc_in<COND>     in_COND;

        sc_in<uint32_t> in_n_A;

//B bus

        sc_in<SHIFT>    in_SHIFT;

        sc_in<uint32_t> in_n_Dist;

    sc_in<uint32_t> in_n_B;

//ALU Bus

        sc_out<uint32_t> out_n_ALUOutput;

        sc_in<REGS>     in_Rd;

        sc_out<REGS>    out_Rd;

//      sc_out<uint32_t> out_n_Flag;

                //regs file

        sc_outmaster<REGS>   out_REG;

        sc_inoutslave<uint32_t> in_n_RegData;

private:

        sc_signal<OPCODE>   s_OP;

        sc_signal<COND>     s_COND;

        sc_signal<uint32_t> s_n_A;

        sc_signal<SHIFT>    s_SHIFT;

        sc_signal<uint32_t> s_n_Dist;

        sc_signal<uint32_t> s_n_B;

        //should update flag

        sc_signal<uint32_t> s_n_Flag;

private:

        scALU inst_ALU;

        scBarrelShifter inst_BarrelShifter;

        sc_signal<uint32_t> s_n_B1;

    sc_signal<uint32_t> s_n_ALUOutput;

public:

        SC_HAS_PROCESS(scEX);

        scEX(const sc_module_name name_):sc_module(name_),

                inst_ALU("alu"),

            inst_BarrelShifter("barrel_shifter")

        {

           SC_METHOD(entry);

           sensitive_pos<<in_b_Clock;

           SC_METHOD(output);

           sensitive<<s_n_ALUOutput;

           //internal links

           //A bus is directly linked

           //The barrelshifter is inserted before the ALU in B bus

           //For ARM6, there is a Booth Mutiplier which is inserted in A Bus

           inst_BarrelShifter(s_n_B,s_SHIFT,s_n_Dist,s_n_B1,

                   out_REG,in_n_RegData);

           inst_ALU(s_OP,s_COND,s_n_A,s_n_B1,s_n_ALUOutput,s_n_Flag);

        }

        virtual ~scEX();

private:

        void entry(void);

private:

        void output();

        uint32_t m_n_ALUOutput;

        uint32_t m_nIR;

        uint32_t m_nCond;//Control signals

};