source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/src/Parameters.cpp @ 111

Last change on this file since 111 was 111, checked in by rosiere, 15 years ago

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
  • Property svn:keywords set to Id
File size: 5.7 KB
Line 
1/*
2 * $Id: Parameters.cpp 111 2009-02-27 18:37:40Z rosiere $
3 *
4 * [ Description ]
5 *
6 */
7
8#include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/include/Parameters.h"
9#include "Common/include/BitManipulation.h"
10
11namespace morpheo {
12namespace behavioural {
13namespace core {
14namespace multi_front_end {
15namespace front_end {
16namespace prediction_unit {
17namespace direction {
18namespace meta_predictor {
19namespace two_level_branch_predictor {
20
21
22#undef  FUNCTION
23#define FUNCTION "Two_Level_Branch_Predictor::Parameters"
24  Parameters::Parameters (uint32_t nb_inst_predict       ,
25                          uint32_t nb_inst_update        ,
26                          uint32_t size_address          ,
27                          bool     have_bht              ,
28                          uint32_t bht_size_shifter      ,
29                          uint32_t bht_nb_shifter        ,
30                          bool     have_pht              ,
31                          uint32_t pht_size_counter      ,
32                          uint32_t pht_nb_counter        ,
33                          uint32_t pht_size_address_share,
34                          bool     update_on_prediction  ,
35                          bool is_toplevel)
36  {
37    log_begin(Two_Level_Branch_Predictor,FUNCTION);
38
39    _nb_inst_predict         = nb_inst_predict       ;
40    _nb_inst_update          = nb_inst_update        ;
41    _size_address            = size_address          ;
42    _have_bht                = have_bht              ;
43    _bht_size_shifter        = (have_bht)?(bht_size_shifter):0;
44    _bht_nb_shifter          = (have_bht)?(bht_nb_shifter  ):0;
45    _have_pht                = have_pht              ;
46    _pht_size_counter        = (have_pht)?(pht_size_counter      ):0;
47    _pht_nb_counter          = (have_pht)?(pht_nb_counter        ):0;
48    _pht_size_address_share  = (have_bht and have_pht)?(pht_size_address_share):0;
49    _update_on_prediction    = update_on_prediction  ;
50                             
51    _bht_size_address        = (_have_bht)?log2(_bht_nb_shifter):0;
52    _pht_size_address        = (_have_pht)?log2(_pht_nb_counter):0;
53                             
54    test();                 
55
56    _size_history            = _bht_size_shifter + _pht_size_counter;
57                             
58    _bht_history_mask        = gen_mask<Thistory_t>(_bht_size_shifter);
59    _bht_history_rshift      = 0;
60    _pht_history_mask        = gen_mask<Thistory_t>(_pht_size_counter);
61    _pht_history_rshift      = _bht_size_shifter;
62                             
63    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _size_history             : %d",_size_history  );
64    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _bht_history_mask         : 0x%x",_bht_history_mask  );
65    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _bht_history_rshift       : %d",_bht_history_rshift);
66    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_history_mask         : 0x%x",_pht_history_mask  );
67    log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_history_rshift       : %d",_pht_history_rshift);
68
69    if (_have_bht)
70      {
71        _bht_address_mask        = gen_mask<Taddress_t>(_bht_size_address);
72
73        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _bht_address_mask         : 0x%x",_bht_address_mask  );
74      }
75
76    if (_have_pht)
77      {
78        _pht_counter_max         = (1<<_pht_size_counter)-1;
79       
80        _pht_nb_bank             = (_pht_nb_counter - (1<<_bht_size_shifter))+1;
81        _pht_size_bank           = _pht_nb_counter / _pht_nb_bank;
82
83        _pht_address_share_mask  = gen_mask<Taddress_t>(_pht_size_address_share);
84        _pht_address_share_lshift= _bht_size_shifter-_pht_size_address_share;
85        _pht_address_bank_mask   = gen_mask<Taddress_t>(log2(_pht_nb_bank));
86        _pht_address_bank_rshift = _pht_size_address_share;
87
88        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_nb_bank              : %d"  ,_pht_nb_bank   );
89        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_size_bank            : %d"  ,_pht_size_bank );
90        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_share_mask   : 0x%x",_pht_address_share_mask  );
91        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_share_lshift : %d"  ,_pht_address_share_lshift);
92        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_bank_mask    : 0x%x",_pht_address_bank_mask   );
93        log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION,"  * _pht_address_bank_rshift  : %d"  ,_pht_address_bank_rshift );
94      }
95
96    if (is_toplevel)
97      copy();
98
99    log_end(Two_Level_Branch_Predictor,FUNCTION);
100  };
101 
102// #undef  FUNCTION
103// #define FUNCTION "Two_Level_Branch_Predictor::Parameters (copy)"
104//   Parameters::Parameters (Parameters & param)
105//   {
106//     log_begin(Two_Level_Branch_Predictor,FUNCTION);
107//     test();
108//     log_end(Two_Level_Branch_Predictor,FUNCTION);
109//   };
110
111#undef  FUNCTION
112#define FUNCTION "Two_Level_Branch_Predictor::~Parameters"
113  Parameters::~Parameters (void) 
114  {
115    log_begin(Two_Level_Branch_Predictor,FUNCTION);
116    log_end(Two_Level_Branch_Predictor,FUNCTION);
117  };
118
119#undef  FUNCTION
120#define FUNCTION "Two_Level_Branch_Predictor::copy"
121  void Parameters::copy (void) 
122  {
123    log_begin(Two_Level_Branch_Predictor,FUNCTION);
124    log_end(Two_Level_Branch_Predictor,FUNCTION);
125  };
126
127}; // end namespace two_level_branch_predictor
128}; // end namespace meta_predictor
129}; // end namespace direction
130}; // end namespace prediction_unit
131}; // end namespace front_end
132}; // end namespace multi_front_end
133}; // end namespace core
134
135}; // end namespace behavioural
136}; // end namespace morpheo             
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