source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Branch_Target_Buffer/Branch_Target_Buffer_Register/src/Branch_Target_Buffer_Register_genMealy_update.cpp @ 88

#ifdef SYSTEMC
/*
 * $Id: Branch_Target_Buffer_Register_genMealy_update.cpp 88 2008-12-10 18:31:39Z rosiere $
 *
 * [ Description ]
 * 
 */

#include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Branch_Target_Buffer/Branch_Target_Buffer_Register/include/Branch_Target_Buffer_Register.h"

namespace morpheo                    {
namespace behavioural {
namespace core {
namespace multi_front_end {
namespace front_end {
namespace prediction_unit {
namespace branch_target_buffer {
namespace branch_target_buffer_register {

#undef  FUNCTION
#define FUNCTION "Branch_Target_Buffer_Register::genMealy_update"
  void Branch_Target_Buffer_Register::genMealy_update (void)
  {
    log_begin(Branch_Target_Buffer_Register,FUNCTION);
    log_function(Branch_Target_Buffer_Register,FUNCTION,_name.c_str());

    for (uint32_t i=0; i<_param->_nb_inst_update; i++)
      {
        Tcontext_t      context   = (_param->_have_port_context_id)?PORT_READ(in_UPDATE_CONTEXT_ID  [i]):0;
        Tgeneral_data_t address   = PORT_READ(in_UPDATE_ADDRESS_SRC [i]);

        Tcontrol_t      hit       = false;
        uint32_t        num_bank  = (address>>_param->_shift_bank)&_param->_mask_bank;
        uint32_t        num_entry = 0;
        
        if (PORT_READ(in_UPDATE_VAL [i]))
          for (;num_entry < _param->_associativity; num_entry ++)
            {
              hit = ((reg_BTB[num_bank][num_entry]._val         == 1      ) and
                     (reg_BTB[num_bank][num_entry]._context     == context) and
                     (reg_BTB[num_bank][num_entry]._address_src == address));

              if (hit)
                break;
            }

        internal_UPDATE_HIT       [i] = hit      ;
        internal_UPDATE_NUM_BANK  [i] = num_bank ;
        internal_UPDATE_NUM_ENTRY [i] = num_entry;

        if (_param->_have_port_victim)
          {
        PORT_WRITE(out_UPDATE_HIT [i], hit);
        PORT_WRITE(out_UPDATE_HIT_INDEX [i], num_entry);
          }
      }

    log_end(Branch_Target_Buffer_Register,FUNCTION);
  };

}; // end namespace branch_target_buffer_register
}; // end namespace branch_target_buffer
}; // end namespace prediction_unit
}; // end namespace front_end
}; // end namespace multi_front_end
}; // end namespace core

}; // end namespace behavioural
}; // end namespace morpheo              
#endif