source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Decod_unit/Decod_queue/src/Decod_queue_function_one_fifo_genMealy_decod_out.cpp @ 123

#ifdef SYSTEMC
/*
 * $Id: Decod_queue_function_one_fifo_genMealy_decod_out.cpp 123 2009-06-08 20:43:30Z rosiere $
 *
 * [ Description ]
 * 
 */

#include "Behavioural/Core/Multi_Front_end/Front_end/Decod_unit/Decod_queue/include/Decod_queue.h"

namespace morpheo                    {
namespace behavioural {
namespace core {
namespace multi_front_end {
namespace front_end {
namespace decod_unit {
namespace decod_queue {


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

    if (PORT_READ(in_NRESET))
      {
    bool       context_val   [_param->_nb_context];
    uint32_t   nb_inst_event [_param->_nb_context];
    for (uint32_t i=0; i<_param->_nb_context; i++)
      {
        context_val   [i] = true;
        nb_inst_event [i] = reg_NB_INST_EVENT [i];
      }

    Tcontrol_t val [_param->_nb_inst_decod];
    for (uint32_t i=0; i<_param->_nb_inst_decod; i++)
      {
        val                    [i] = 0;
        internal_DECOD_OUT_VAL [i] = 0;
        internal_DECOD_OUT_ACK [i] = 0;
      }

    if (not reg_QUEUE->empty())
      for (uint32_t i=0; i<_param->_nb_inst_decod; i++)
        {
          uint32_t index = reg_LAST_SLOT + i;

          // Stop
          if (index >= _param->_nb_inst_decod)
            break;

          if (reg_QUEUE->front()->_val [index])
            {
              log_printf(TRACE,Decod_queue,FUNCTION,_("  * Queue is not empty, slot [%d] is valid."),i);
              
              Tcontext_t context         = reg_QUEUE->front()->_context_id    [index];

              log_printf(TRACE,Decod_queue,FUNCTION,"      * context      : %d",context);

              if (context_val [context])
                {

//               Tdepth_t   depth           = reg_QUEUE->front()->_depth         [index];
//               Tdepth_t   depth_min       = (_param->_have_port_depth)?PORT_READ(in_DEPTH_MIN [context]):0;
//               Tdepth_t   depth_max       = (_param->_have_port_depth)?PORT_READ(in_DEPTH_MAX [context]):0;
//               Tcontrol_t depth_full      = PORT_READ(in_DEPTH_FULL[context]);

                  // is a valid instruction ?
                  // If DEPTH_CURRENT :
                  // equal at     DEPTH_MIN            -> not speculative
                  // not include ]DEPTH_MIN:DEPTH_MAX] -> previous branch miss
                  //     include ]DEPTH_MIN:DEPTH_MAX] -> speculative
                  
                  // All case
                  // ....... min ...X... max ....... OK
                  // ....... min ....... max ...X... KO
                  // ...X... min ....... max ....... KO
                  // ....... max ....... min ...X... OK
                  // ...X... max ....... min ....... OK
                  // ....... max ...X... min ....... KO
                  
                  Tcontrol_t is_valid = (nb_inst_event [context] == 0);

//                   Tcontrol_t   is_valid      = ((depth == depth_min) or
//                                                 depth_full or
//                                                 ((depth_min <= depth_max)?
//                                                  ((depth >= depth_min) and (depth <=depth_max)):
//                                                  ((depth >= depth_min) or  (depth <=depth_max))));
                  
                  log_printf(TRACE,Decod_queue,FUNCTION,"    * is_valid : %d",is_valid);
                  log_printf(TRACE,Decod_queue,FUNCTION,"      * context_val  : %d",context_val   [context]);
                  log_printf(TRACE,Decod_queue,FUNCTION,"      * nb_inst_event: %d",nb_inst_event [context]);
//                   log_printf(TRACE,Decod_queue,FUNCTION,"      * depth        : %d",depth);
//                   log_printf(TRACE,Decod_queue,FUNCTION,"      * depth_min    : %d",depth_min);
//                   log_printf(TRACE,Decod_queue,FUNCTION,"      * depth_max    : %d",depth_max);
//                   log_printf(TRACE,Decod_queue,FUNCTION,"      * depth_full   : %d",depth_full);
#ifdef DEBUG      
                  log_printf(TRACE,Decod_queue,FUNCTION,"      * address      : 0x%x (0x%x)",reg_QUEUE->front()->_address     [index],reg_QUEUE->front()->_address     [index]<<2);
#endif            
                  log_printf(TRACE,Decod_queue,FUNCTION,"      * address_next : 0x%x (0x%x)",reg_QUEUE->front()->_address_next[index],reg_QUEUE->front()->_address_next[index]<<2);
                  internal_DECOD_OUT_VAL [index] = 1; // in all case, val is set (entry is not empty, and instruction is valid)
                  
                  if (is_valid)
                    {
                      val                    [i]     = 1;
                      internal_DECOD_OUT_ACK [index] = PORT_READ(in_DECOD_OUT_ACK [i]);
                    }
                  else
                    {
                      // Consume the instruction (to erase)
                      internal_DECOD_OUT_ACK [index] = 1;

                      // Have event ?
                      if (nb_inst_event [context] > 0)
                        {
                          nb_inst_event [context] --;
                          
                          // Last event ?
                          if (nb_inst_event [context] == 0)
                            {
                              context_val [context] = false;
                            }
                        }
                    }
                }
            }
      }

    for (uint32_t i=0; i<_param->_nb_inst_decod; i++)
      {
        log_printf(TRACE,Decod_queue,FUNCTION,"  * DECOD_OUT_VAL : %d",val [i]);
        
        PORT_WRITE(out_DECOD_OUT_VAL [i],val [i]);
      }
      }
    else
      {
        // Reset 
        for (uint32_t i=0; i<_param->_nb_inst_decod; i++)
          {
            internal_DECOD_OUT_VAL [i] = 0;
            internal_DECOD_OUT_ACK [i] = 0;
            PORT_WRITE(out_DECOD_OUT_VAL [i],0);
          }
      }

    log_end(Decod_queue,FUNCTION);
  };

}; // end namespace decod_queue
}; // end namespace decod_unit
}; // end namespace front_end
}; // end namespace multi_front_end
}; // end namespace core

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