Subversion Repositories sardmips

#include "systemc.h"

#include "../../constants/constants.h"

SC_MODULE(exception)

{

        sc_in<bool> in_clk;

        sc_in<bool> reset;

        sc_in<sc_logic>         m_wb_IBUS;

        sc_in<sc_logic>         m_wb_inst_addrl;

        sc_in<sc_logic>         m_wb_syscall_exception;

        sc_in<sc_logic>         m_wb_illegal_instruction;

        sc_in<sc_logic>         m_wb_ovf_excep;

        sc_in<sc_logic>         m_wb_DBUS;

        sc_in<sc_logic>         m_wb_data_addrl;

        sc_in<sc_logic>         m_wb_data_addrs;

        sc_in<sc_uint<32> >     m_wb_dataaddr;

        sc_in<sc_uint<32> >     m_wb_instaddr;

        sc_in<sc_lv<4> >        cp0_inst;

        //**************INTERRUPT****************

        sc_in<bool>             m_wb_interrupt_signal;

        //sc_out<sc_logic>      interrupt_exception;

        //sc_in<sc_uint<32> >   ex_m_instaddr;

        sc_signal<sc_logic>     to_SR;

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

        sc_out<sc_lv<32> >      cause;

        sc_out<bool>    check_excep;

        sc_out<sc_uint<32> >    to_EPC;

        sc_out<sc_uint<32> >    to_BadVAddr;

        void compute_cause();

        void check_for_exception();

        void check_for_interrupt();

        void check_for_Page_fault();

        void save_EPC();

        void handling_status_register();

        SC_CTOR(exception)

        {

                SC_METHOD(compute_cause);

                sensitive << m_wb_IBUS << m_wb_inst_addrl << m_wb_syscall_exception;

                sensitive << m_wb_illegal_instruction << m_wb_ovf_excep;

                sensitive << m_wb_DBUS << m_wb_data_addrl << m_wb_data_addrs;

                sensitive << m_wb_interrupt_signal;

                SC_METHOD(check_for_exception);

                sensitive << m_wb_IBUS << m_wb_inst_addrl << m_wb_syscall_exception;

                sensitive << m_wb_illegal_instruction << m_wb_ovf_excep;

                sensitive << m_wb_DBUS << m_wb_data_addrl << m_wb_data_addrs << m_wb_interrupt_signal;

                SC_METHOD(check_for_interrupt);

                //sensitive << interrupt_signal;

                SC_METHOD(check_for_Page_fault);

                sensitive << cause << m_wb_instaddr << m_wb_dataaddr;

                SC_METHOD(save_EPC);

                sensitive << check_excep;

                sensitive << m_wb_instaddr;

                SC_METHOD(handling_status_register);

                sensitive << m_wb_interrupt_signal;

                sensitive << cp0_inst << reset;

        }

};