Changeset 88 for trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/src/Update_Prediction_Table_genMealy_decod.cpp

Timestamp:

Dec 10, 2008, 7:31:39 PM (16 years ago)

Author:

rosiere

Message:

Almost complete design
with Test and test platform

File:

• trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/src/Update_Prediction_Table_genMealy_decod.cpp (modified) (1 diff)

trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/src/Update_Prediction_Table_genMealy_decod.cpp

@@ -22 +22 @@
   void Update_Prediction_Table::genMealy_decod (void)
   {
-    log_printf(FUNC,Update_Prediction_Table,FUNCTION,"Begin");
+    log_begin(Update_Prediction_Table,FUNCTION);
+    log_function(Update_Prediction_Table,FUNCTION,_name.c_str());
     
+    // WARNING : One branch per context per cycle
     for (uint32_t i=0; i<_param->_nb_inst_decod; i++)
       {
-        Tcontrol_t miss = PORT_READ(in_DECOD_MISS_DECOD [i]);
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * DECOD [%d]",i);
 
-        if (miss)
-          {
-            // miss : need a empty slot.
-            Tcontext_t context = (_param->_have_port_context_id)?PORT_READ(in_DECOD_CONTEXT_ID [i]):0;
-            uint32_t   top     = reg_TOP[context];
-            internal_DECOD_ACK [i] = (reg_UPDATE_PREDICTION_TABLE [context][top]._state == UPDATE_PREDICTION_STATE_EMPTY);
-          }
-        else
-          {
-            internal_DECOD_ACK [i] = true;
-          }
+        Tcontext_t    context     = (_param->_have_port_context_id)?PORT_READ(in_DECOD_CONTEXT_ID [i]):0;
+        bool          is_accurate = reg_IS_ACCURATE [context];
+        event_state_t event_state = reg_EVENT_STATE [context];
+        uint32_t      ptr_write   = reg_UPT_TOP     [context];
+
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * context     : %d",context    );
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * is_accurate : %d",is_accurate);
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * event_state : %s",toString(event_state).c_str());
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * ptr_write   : %d",ptr_write  );
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * upt_state   : %s",toString(reg_UPDATE_PREDICTION_TABLE [context][ptr_write]._state).c_str());
+
+        // ack :
+        //   * in all case (miss or hit), need empty slot
+        //   * is_accurate
+        //   * event_state : don't update upt
+        internal_DECOD_ACK           [i] = ((reg_UPDATE_PREDICTION_TABLE [context][ptr_write]._state == UPDATE_PREDICTION_STATE_EMPTY) and
+                                            is_accurate and
+//                                             (
+                                             (event_state == EVENT_STATE_OK            )//  or
+//                                              (event_state == EVENT_STATE_FLUSH_UFPT    ) or
+//                                              (event_state == EVENT_STATE_UPDATE_CONTEXT))
+                                            );
+        internal_DECOD_UPT_PTR_WRITE [i] = ptr_write;
+
+        log_printf(TRACE,Update_Prediction_Table,FUNCTION,"  * ack         : %d",internal_DECOD_ACK [i]);
 
         PORT_WRITE(out_DECOD_ACK [i], internal_DECOD_ACK [i]);
       }
 
-    log_printf(FUNC,Update_Prediction_Table,FUNCTION,"End");
+    log_end(Update_Prediction_Table,FUNCTION);
   };