Changeset 111 for trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/src/Parameters.cpp

Timestamp:

Feb 27, 2009, 7:37:40 PM (15 years ago)

Author:

rosiere

Message:

1) Decod_queue : multi implementation (one_fifo, multi_fifo)
2) Issue_queue : multi implementation (in_order, out_of_order)
3) Direction : Add Meta predictor
4) Context_State : re add Branch_complete, More priority to Load miss (is not speculative)
5) Return_Address_Stack : update reg_PREDICT pointer on decod miss prediction
6) UPT : Fix bug in multi event
7) Prediction_glue : in read_stack case, insert in UPT pc_next
8) Rename select : when rob have an event (need flush), read_r{a,b,c} and write_r{d,e} is set at 0

File:

• trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/src/Parameters.cpp (modified) (2 diffs)

trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/src/Parameters.cpp

@@ -7 +7 @@
 
 #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/include/Parameters.h"
+#include "Common/include/BitManipulation.h"
 
 namespace morpheo {
@@ -21 +22 @@
 #undef  FUNCTION
 #define FUNCTION "Two_Level_Branch_Predictor::Parameters"
-  Parameters::Parameters (bool is_toplevel)
+  Parameters::Parameters (uint32_t nb_inst_predict       ,
+                          uint32_t nb_inst_update        ,
+                          uint32_t size_address          ,
+                          bool     have_bht              ,
+                          uint32_t bht_size_shifter      ,
+                          uint32_t bht_nb_shifter        ,
+                          bool     have_pht              ,
+                          uint32_t pht_size_counter      ,
+                          uint32_t pht_nb_counter        ,
+                          uint32_t pht_size_address_share,
+                          bool     update_on_prediction  ,
+                          bool is_toplevel)
   {
     log_begin(Two_Level_Branch_Predictor,FUNCTION);
 
-    test();
+    _nb_inst_predict         = nb_inst_predict       ;
+    _nb_inst_update          = nb_inst_update        ;
+    _size_address            = size_address          ;
+    _have_bht                = have_bht              ;
+    _bht_size_shifter        = (have_bht)?(bht_size_shifter):0;
+    _bht_nb_shifter          = (have_bht)?(bht_nb_shifter  ):0;
+    _have_pht                = have_pht              ;
+    _pht_size_counter        = (have_pht)?(pht_size_counter      ):0;
+    _pht_nb_counter          = (have_pht)?(pht_nb_counter        ):0;
+    _pht_size_address_share  = (have_bht and have_pht)?(pht_size_address_share):0;
+    _update_on_prediction    = update_on_prediction  ;
+                             
+    _bht_size_address        = (_have_bht)?log2(_bht_nb_shifter):0;
+    _pht_size_address        = (_have_pht)?log2(_pht_nb_counter):0;
+                             
+    test();                  
+
+    _size_history            = _bht_size_shifter + _pht_size_counter;
+                             
+    _bht_history_mask        = gen_mask<Thistory_t>(_bht_size_shifter);
+    _bht_history_rshift      = 0;
+    _pht_history_mask        = gen_mask<Thistory_t>(_pht_size_counter);
+    _pht_history_rshift      = _bht_size_shifter;
+                             
+    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _size_history             : %d",_size_history  );
+    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _bht_history_mask         : 0x%x",_bht_history_mask  );
+    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _bht_history_rshift       : %d",_bht_history_rshift);
+    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_history_mask         : 0x%x",_pht_history_mask  );
+    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_history_rshift       : %d",_pht_history_rshift);
+
+    if (_have_bht)
+      {
+        _bht_address_mask        = gen_mask<Taddress_t>(_bht_size_address);
+
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _bht_address_mask         : 0x%x",_bht_address_mask  );
+      }
+
+    if (_have_pht)
+      {
+        _pht_counter_max         = (1<<_pht_size_counter)-1;
+        
+        _pht_nb_bank             = (_pht_nb_counter - (1<<_bht_size_shifter))+1;
+        _pht_size_bank           = _pht_nb_counter / _pht_nb_bank;
+
+        _pht_address_share_mask  = gen_mask<Taddress_t>(_pht_size_address_share);
+        _pht_address_share_lshift= _bht_size_shifter-_pht_size_address_share;
+        _pht_address_bank_mask   = gen_mask<Taddress_t>(log2(_pht_nb_bank));
+        _pht_address_bank_rshift = _pht_size_address_share;
+
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_nb_bank              : %d"  ,_pht_nb_bank   );
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_size_bank            : %d"  ,_pht_size_bank );
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_share_mask   : 0x%x",_pht_address_share_mask  );
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_share_lshift : %d"  ,_pht_address_share_lshift);
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_bank_mask    : 0x%x",_pht_address_bank_mask   );
+        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_bank_rshift  : %d"  ,_pht_address_bank_rshift );
+      }
 
     if (is_toplevel)
-      {
-        copy();
-      }
+      copy();
 
     log_end(Two_Level_Branch_Predictor,FUNCTION);