Changeset 107 for trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Return_Address_Stack/src/Return_Address_Stack_transition.cpp

Timestamp:

Feb 11, 2009, 12:03:25 AM (15 years ago)

Author:

rosiere

Message:

1) Fix test in Direction_Glue for Conditionnal Branch
2) Fix Instruction Address Compute

File:

• trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Return_Address_Stack/src/Return_Address_Stack_transition.cpp (modified) (2 diffs)

trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Return_Address_Stack/src/Return_Address_Stack_transition.cpp

@@ -237 +237 @@
               if (flush)
                 {
+                  Tcontrol_t push  = PORT_READ(in_UPDATE_PUSH [i]);
+                  Tptr_t     value = (push)?1:0;
+
                   // All pointer is set at 0
-                  reg_TOP    [context_id] = 0;
+                  reg_TOP    [context_id] = value;
 //                reg_BOTTOM [context_id] = 0;
-                  reg_NB_ELT [context_id] = 0;
-                  
-                  reg_PREDICT_TOP    [context_id] = 0;
+                  reg_NB_ELT [context_id] = value;
+                  
+                  reg_PREDICT_TOP    [context_id] = value;
 //                reg_PREDICT_BOTTOM [context_id] = 0;
-                  reg_PREDICT_NB_ELT [context_id] = 0;
+                  reg_PREDICT_NB_ELT [context_id] = value;
+
+                  if (push)
+                    {
+                      // reinsert push value
+                      reg_stack [context_id][0]._address = PORT_READ(in_UPDATE_ADDRESS [i]);
+                    }
                 }
               else
@@ -313 +322 @@
                           // previous is push, now must be pop
 
-                          // Test if the stack is empty
-                          if (nb_elt_old>0) // ??
+                          // Test if the stack is empty (if previous flush)
+                          if (nb_elt_old>0)
                             {
                               top_new = (top_old==0)?(_param->_size_queue[context_id]-1):(top_old-1);