source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/src/Two_Level_Branch_Predictor.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: 3.8 KB
Line 
1/*
2 * $Id: Two_Level_Branch_Predictor.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/Two_Level_Branch_Predictor.h"
9
10namespace morpheo                    {
11namespace behavioural {
12namespace core {
13namespace multi_front_end {
14namespace front_end {
15namespace prediction_unit {
16namespace direction {
17namespace meta_predictor {
18namespace two_level_branch_predictor {
19
20
21#undef  FUNCTION
22#define FUNCTION "Two_Level_Branch_Predictor::Two_Level_Branch_Predictor"
23  Two_Level_Branch_Predictor::Two_Level_Branch_Predictor
24  (
25#ifdef SYSTEMC
26   sc_module_name name,
27#else
28   string name,
29#endif
30#ifdef STATISTICS
31   morpheo::behavioural::Parameters_Statistics * param_statistics,
32#endif
33   morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::direction::meta_predictor::two_level_branch_predictor::Parameters * param,
34   morpheo::behavioural::Tusage_t usage
35   ):
36    _name              (name)
37    ,_param            (param)
38    ,_usage            (usage)
39  {
40    log_begin(Two_Level_Branch_Predictor,FUNCTION);
41
42    usage_environment(_usage);
43
44    log_printf(INFO,Two_Level_Branch_Predictor,FUNCTION,_("<%s> : Allocation"),_name.c_str());
45
46    allocation (
47#ifdef STATISTICS
48                param_statistics
49#endif
50                );
51
52#ifdef STATISTICS
53    if (usage_is_set(_usage,USE_STATISTICS))
54      { 
55        log_printf(INFO,Two_Level_Branch_Predictor,FUNCTION,_("<%s> : Allocation of statistics"),_name.c_str());
56
57        statistics_allocation(param_statistics);
58      }
59#endif
60
61#ifdef VHDL
62    if (usage_is_set(_usage,USE_VHDL))
63      {
64        // generate the vhdl
65        log_printf(INFO,Two_Level_Branch_Predictor,FUNCTION,_("<%s> : Generate the vhdl"),_name.c_str());
66       
67        vhdl();
68      }
69#endif
70
71#ifdef SYSTEMC
72    if (usage_is_set(_usage,USE_SYSTEMC))
73      {
74        // Constants :
75        for (uint32_t i=0; i<_param->_nb_inst_predict; ++i)
76          {
77            internal_PREDICT_ACK [i] = 1;
78            PORT_WRITE(out_PREDICT_ACK [i], internal_PREDICT_ACK [i]);
79          }
80        for (uint32_t i=0; i<_param->_nb_inst_update; ++i)
81          {
82            internal_UPDATE_ACK [i] = 1;
83            PORT_WRITE(out_UPDATE_ACK [i], internal_UPDATE_ACK [i]);
84          }
85       
86
87        log_printf(INFO,Two_Level_Branch_Predictor,FUNCTION,_("<%s> : Method - transition"),_name.c_str());
88
89        SC_METHOD (transition);
90        dont_initialize ();
91        sensitive << (*(in_CLOCK)).pos();
92       
93# ifdef SYSTEMCASS_SPECIFIC
94        // List dependency information
95# endif   
96
97        log_printf(INFO,Two_Level_Branch_Predictor,FUNCTION,_("<%s> : Method - genMealy_predict"),_name.c_str());
98
99        SC_METHOD (genMealy_predict);
100        dont_initialize ();
101        sensitive << (*(in_CLOCK)).neg(); // need internal register
102
103        for (uint32_t i=0; i<_param->_nb_inst_predict; ++i)
104          sensitive
105//             << (*(in_PREDICT_VAL     [i]))
106            << (*(in_PREDICT_ADDRESS [i]));
107               
108# ifdef SYSTEMCASS_SPECIFIC
109        // List dependency information
110# endif   
111       
112#endif
113      }
114    log_end(Two_Level_Branch_Predictor,FUNCTION);
115  };
116   
117#undef  FUNCTION
118#define FUNCTION "Two_Level_Branch_Predictor::~Two_Level_Branch_Predictor"
119  Two_Level_Branch_Predictor::~Two_Level_Branch_Predictor (void)
120  {
121    log_begin(Two_Level_Branch_Predictor,FUNCTION);
122
123#ifdef STATISTICS
124    if (usage_is_set(_usage,USE_STATISTICS))
125      {
126        statistics_deallocation();
127      }
128#endif
129
130    log_printf(INFO,Two_Level_Branch_Predictor,FUNCTION,_("<%s> : Deallocation"),_name.c_str());
131    deallocation ();
132
133    log_end(Two_Level_Branch_Predictor,FUNCTION);
134  };
135
136}; // end namespace two_level_branch_predictor
137}; // end namespace meta_predictor
138}; // end namespace direction
139}; // end namespace prediction_unit
140}; // end namespace front_end
141}; // end namespace multi_front_end
142}; // end namespace core
143
144}; // end namespace behavioural
145}; // end namespace morpheo             
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