[Gems-users] how to add a register in gems

["lenglihello" <lenglihello@xxxxxxx>]

hi,

I want to simulate something about transaction, and it needs two register , one is to save the  thread ID witch transaction belong to, another is to save the transaction state. I do not know if there has been two registers working as above, if not how can I add two registers in gems.

I have tried to add two registers as fallowig:

**************************************

in pstate.C

const char *pstate_t::control_reg_menomic[CONTROL_TRANSACTION_STATE] = {

  /* CONTROL_PC */               "pc",
       /* CONTROL_NPC */              "npc",

 .............

 /*CONTROL_TRANSACTION_THREAD*/    "ttr" //-----------added by me

 /*CONTROL_TRANSACTION_STATE*/    "tsr"  //-----------added by me

}

in Targetmacros.h

    enum control_reg_t {
        CONTROL_PC = 0,
        CONTROL_NPC,

        .........

        CONTROL_TRANSACTION_THREAD,  //---------added by me

        CONTROL_TRANSACTION_THREAD   //---------added by me

     }

 in regbox.C, pseq.C ......

      m_control_map[i] = (byte_t *) malloc( sizeof(byte_t) * CONTROL_TRANSACTION_STATE);  //modify it instead of "m_control_map[i] = (byte_t*) malloc( sizeof(byte_t)* CONTROL_NUM_CONTROL_TYPES);"
      for ( reg = 0; reg < CONTROL_TRANSACTION_STATE; reg++ )    //modify it instead of "for ( reg = 0; reg < CONTROL_NUM_CONTROL_TYPES; reg++ )

 **************************************

when I run a test on target machine, simics was stoped with " Exception in hap handler: Non-existent Register"

Is there anyone can tell me how to add two registers in gems? thanks anyway!

2009-07-21

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lenglihello