source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Decod_unit/Decod_queue/src/Decod_queue_genMealy_decod_out.cpp @ 88

#ifdef SYSTEMC
/*
 * $Id: Decod_queue_genMealy_decod_out.cpp 88 2008-12-10 18:31:39Z 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::genMealy_decod_out"
  void Decod_queue::genMealy_decod_out (void)
  {
    log_begin(Decod_queue,FUNCTION);
    log_function(Decod_queue,FUNCTION,_name.c_str());

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

            Tcontext_t context         = reg_QUEUE->front()->_context_id    [i];
            Tdepth_t   depth           = reg_QUEUE->front()->_depth         [i];
            Tdepth_t   depth_min       = (_param->_have_port_depth)?PORT_READ(in_DEPTH_MIN [context]):0;
            Tdepth_t   depth_max       = PORT_READ(in_DEPTH_MAX[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        = ((depth == depth_min) or 
                                          ((depth_min < depth_max)?
                                           (depth<depth_max):
                                           ((depth > depth_min) or (depth < depth_max))));
//          Tcontrol_t is_valid        = depth <= depth_max;

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

            internal_DECOD_OUT_VAL [i] = 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 [i] = PORT_READ(in_DECOD_OUT_ACK [i]);
              }
            else
              {
                // Cusume the instruction (to erase)
                internal_DECOD_OUT_ACK [i] = 1;
              }
          }

    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]);
      }

    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