[78] | 1 | #ifndef morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_update_prediction_table_Update_Prediction_Table_h |
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| 2 | #define morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_update_prediction_table_Update_Prediction_Table_h |
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| 3 | |
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| 4 | /* |
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| 5 | * $Id: Update_Prediction_Table.h 131 2009-07-08 18:40:08Z rosiere $ |
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| 6 | * |
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| 7 | * [ Description ] |
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| 8 | * |
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| 9 | */ |
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| 10 | |
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| 11 | #ifdef SYSTEMC |
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| 12 | #include "systemc.h" |
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| 13 | #endif |
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| 14 | |
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| 15 | #include <iostream> |
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| 16 | #include "Common/include/ToString.h" |
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| 17 | #include "Common/include/Debug.h" |
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| 18 | |
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| 19 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/include/Types.h" |
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| 20 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/include/Parameters.h" |
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| 21 | #ifdef STATISTICS |
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| 22 | #include "Behavioural/include/Stat.h" |
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| 23 | #endif |
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| 24 | #include "Behavioural/include/Component.h" |
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| 25 | #ifdef VHDL |
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| 26 | #include "Behavioural/include/Vhdl.h" |
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| 27 | #endif |
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| 28 | #include "Behavioural/include/Usage.h" |
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[111] | 29 | #include <fstream> |
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[78] | 30 | |
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| 31 | namespace morpheo { |
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| 32 | namespace behavioural { |
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| 33 | |
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| 34 | namespace core { |
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| 35 | namespace multi_front_end { |
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| 36 | namespace front_end { |
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| 37 | namespace prediction_unit { |
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| 38 | namespace update_prediction_table { |
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| 39 | |
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| 40 | |
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| 41 | class Update_Prediction_Table |
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| 42 | #if SYSTEMC |
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| 43 | : public sc_module |
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| 44 | #endif |
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| 45 | { |
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| 46 | // -----[ fields ]---------------------------------------------------- |
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| 47 | // Parameters |
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| 48 | protected : const std::string _name; |
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| 49 | protected : const Parameters * _param; |
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| 50 | private : const Tusage_t _usage; |
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| 51 | |
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| 52 | #ifdef STATISTICS |
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| 53 | public : Stat * _stat; |
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[88] | 54 | |
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[115] | 55 | private : counter_t *** _stat_nb_branch_hit ; //[nb_context][MAX_BRANCH_CONDITION] |
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| 56 | private : counter_t *** _stat_nb_branch_miss ; //[nb_context][MAX_BRANCH_CONDITION] |
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| 57 | private : counter_t ** _stat_nb_branch_unused ; //[nb_context] |
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| 58 | private : counter_t ** _stat_ufpt_queue_nb_elt ; //[nb_context] |
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| 59 | private : counter_t ** _stat_upt_queue_nb_elt ; //[nb_context] |
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[88] | 60 | |
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[115] | 61 | private : counter_t ** _stat_nb_branch_ifetch_prediction; //[nb_context] |
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| 62 | private : counter_t ** _stat_nb_branch_accurate ; //[nb_context] |
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[78] | 63 | #endif |
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| 64 | |
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| 65 | public : Component * _component; |
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| 66 | private : Interfaces * _interfaces; |
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| 67 | |
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| 68 | #ifdef SYSTEMC |
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| 69 | // ~~~~~[ Interface ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 70 | // ~~~~~[ Interface : "" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[88] | 71 | public : SC_CLOCK * in_CLOCK ; |
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| 72 | public : SC_IN (Tcontrol_t) * in_NRESET ; |
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[78] | 73 | |
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[81] | 74 | // ~~~~~[ Interface : "predict" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[88] | 75 | public : SC_IN (Tcontrol_t ) ** in_PREDICT_VAL ; //[nb_inst_predict] |
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| 76 | public : SC_OUT(Tcontrol_t ) ** out_PREDICT_ACK ; //[nb_inst_predict] |
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| 77 | public : SC_IN (Tcontext_t ) ** in_PREDICT_CONTEXT_ID ; //[nb_inst_predict] |
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| 78 | public : SC_IN (Taddress_t ) ** in_PREDICT_BTB_ADDRESS_SRC ; //[nb_inst_predict] |
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| 79 | public : SC_IN (Taddress_t ) ** in_PREDICT_BTB_ADDRESS_DEST ; //[nb_inst_predict] |
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| 80 | public : SC_IN (Tbranch_condition_t) ** in_PREDICT_BTB_CONDITION ; //[nb_inst_predict] |
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| 81 | public : SC_IN (Tcontrol_t ) ** in_PREDICT_BTB_LAST_TAKE ; //[nb_inst_predict] |
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| 82 | public : SC_IN (Tcontrol_t ) ** in_PREDICT_BTB_IS_ACCURATE ; //[nb_inst_predict] |
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| 83 | public : SC_IN (Thistory_t ) ** in_PREDICT_DIR_HISTORY ; //[nb_inst_predict] |
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| 84 | public : SC_IN (Taddress_t ) ** in_PREDICT_RAS_ADDRESS ; //[nb_inst_predict] |
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| 85 | public : SC_IN (Tptr_t ) ** in_PREDICT_RAS_INDEX ; //[nb_inst_predict] |
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| 86 | public : SC_OUT(Tprediction_ptr_t ) ** out_PREDICT_UPDATE_PREDICTION_ID ; //[nb_inst_predict] |
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[81] | 87 | |
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| 88 | // ~~~~~[ Interface : "decod" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[88] | 89 | public : SC_IN (Tcontrol_t ) ** in_DECOD_VAL ; //[nb_inst_decod] |
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| 90 | public : SC_OUT(Tcontrol_t ) ** out_DECOD_ACK ; //[nb_inst_decod] |
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| 91 | public : SC_IN (Tcontext_t ) ** in_DECOD_CONTEXT_ID ; //[nb_inst_decod] |
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| 92 | public : SC_IN (Taddress_t ) ** in_DECOD_BTB_ADDRESS_SRC ; //[nb_inst_decod] |
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| 93 | public : SC_IN (Taddress_t ) ** in_DECOD_BTB_ADDRESS_DEST ; //[nb_inst_decod] |
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| 94 | public : SC_IN (Tbranch_condition_t) ** in_DECOD_BTB_CONDITION ; //[nb_inst_decod] |
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| 95 | public : SC_IN (Tcontrol_t ) ** in_DECOD_BTB_LAST_TAKE ; //[nb_inst_decod] |
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| 96 | //public : SC_IN (Thistory_t ) ** in_DECOD_DIR_HISTORY ; //[nb_inst_decod] // if ifetch prediction is miss -> miss btb -> make a static state |
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| 97 | public : SC_IN (Taddress_t ) ** in_DECOD_RAS_ADDRESS ; //[nb_inst_decod] |
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| 98 | public : SC_IN (Tptr_t ) ** in_DECOD_RAS_INDEX ; //[nb_inst_decod] |
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| 99 | public : SC_IN (Tcontrol_t ) ** in_DECOD_MISS_IFETCH ; //[nb_inst_decod] |
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| 100 | public : SC_IN (Tcontrol_t ) ** in_DECOD_MISS_DECOD ; //[nb_inst_decod] |
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| 101 | public : SC_IN (Tprediction_ptr_t ) ** in_DECOD_UPDATE_PREDICTION_ID ; //[nb_inst_decod] |
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| 102 | //public : SC_OUT(Tdepth_t ) ** out_DECOD_DEPTH ; //[nb_inst_decod] |
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| 103 | public : SC_IN (Tcontrol_t ) ** in_DECOD_IS_ACCURATE ; //[nb_inst_decod] |
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[110] | 104 | public : SC_OUT(Tcontrol_t ) ** out_DECOD_CAN_CONTINUE ; //[nb_inst_decod] |
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[81] | 105 | |
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| 106 | // ~~~~~[ Interface : "branch_complete" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 107 | public : SC_IN (Tcontrol_t ) ** in_BRANCH_COMPLETE_VAL ; //[nb_inst_branch_complete] |
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| 108 | public : SC_OUT(Tcontrol_t ) ** out_BRANCH_COMPLETE_ACK ; //[nb_inst_branch_complete] |
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| 109 | public : SC_IN (Tcontext_t ) ** in_BRANCH_COMPLETE_CONTEXT_ID ; //[nb_inst_branch_complete] |
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| 110 | public : SC_IN (Tdepth_t ) ** in_BRANCH_COMPLETE_DEPTH ; //[nb_inst_branch_complete] |
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| 111 | public : SC_IN (Taddress_t ) ** in_BRANCH_COMPLETE_ADDRESS ; //[nb_inst_branch_complete] |
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[98] | 112 | public : SC_IN (Tcontrol_t ) ** in_BRANCH_COMPLETE_NO_SEQUENCE ; //[nb_inst_branch_complete] |
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[81] | 113 | public : SC_OUT(Tcontrol_t ) ** out_BRANCH_COMPLETE_MISS_PREDICTION; //[nb_inst_branch_complete] |
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[111] | 114 | // public : SC_OUT(Tcontrol_t ) ** out_BRANCH_COMPLETE_TAKE ; //[nb_inst_branch_complete] |
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| 115 | // public : SC_OUT(Taddress_t ) ** out_BRANCH_COMPLETE_ADDRESS_SRC ; //[nb_inst_branch_complete] |
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| 116 | // public : SC_OUT(Taddress_t ) ** out_BRANCH_COMPLETE_ADDRESS_DEST ; //[nb_inst_branch_complete] |
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[81] | 117 | |
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[82] | 118 | // ~~~~~[ Interface : "branch_event" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[88] | 119 | public : SC_OUT(Tcontrol_t ) ** out_BRANCH_EVENT_VAL ; //[nb_context] |
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| 120 | public : SC_IN (Tcontrol_t ) ** in_BRANCH_EVENT_ACK ; //[nb_context] |
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| 121 | //public : SC_OUT(Tcontext_t ) ** out_BRANCH_EVENT_CONTEXT_ID ; //[nb_context] |
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[98] | 122 | public : SC_OUT(Tdepth_t ) ** out_BRANCH_EVENT_DEPTH ; //[nb_context] |
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[88] | 123 | //public : SC_OUT(Tcontrol_t ) ** out_BRANCH_EVENT_MISS_PREDICTION ; //[nb_context] is always miss prediction |
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| 124 | public : SC_OUT(Taddress_t ) ** out_BRANCH_EVENT_ADDRESS_SRC ; //[nb_context] |
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[94] | 125 | public : SC_OUT(Tcontrol_t ) ** out_BRANCH_EVENT_ADDRESS_DEST_VAL ; //[nb_context] |
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[88] | 126 | public : SC_OUT(Taddress_t ) ** out_BRANCH_EVENT_ADDRESS_DEST ; //[nb_context] |
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[119] | 127 | public : SC_OUT(Tcontrol_t ) ** out_BRANCH_EVENT_CAN_CONTINUE ; //[nb_context] |
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[82] | 128 | |
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[81] | 129 | // ~~~~~[ Interface : "update" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[88] | 130 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_VAL ; //[nb_inst_update] |
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| 131 | public : SC_IN (Tcontrol_t ) ** in_UPDATE_ACK ; //[nb_inst_update] |
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| 132 | public : SC_OUT(Tcontext_t ) ** out_UPDATE_CONTEXT_ID ; //[nb_inst_update] |
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| 133 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_MISS_PREDICTION ; //[nb_inst_update] |
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| 134 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_DIRECTION_GOOD ; //[nb_inst_update] |
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[112] | 135 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_PREDICTION_IFETCH ; //[nb_inst_update] |
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[88] | 136 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_BTB_VAL ; //[nb_inst_update] |
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| 137 | public : SC_OUT(Taddress_t ) ** out_UPDATE_BTB_ADDRESS_SRC ; //[nb_inst_update] |
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| 138 | public : SC_OUT(Taddress_t ) ** out_UPDATE_BTB_ADDRESS_DEST ; //[nb_inst_update] |
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| 139 | public : SC_OUT(Tbranch_condition_t) ** out_UPDATE_BTB_CONDITION ; //[nb_inst_update] |
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| 140 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_DIR_VAL ; //[nb_inst_update] |
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| 141 | public : SC_OUT(Thistory_t ) ** out_UPDATE_DIR_HISTORY ; //[nb_inst_update] |
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| 142 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_RAS_VAL ; //[nb_inst_update] |
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[94] | 143 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_RAS_FLUSH ; //[nb_inst_update] |
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[88] | 144 | public : SC_OUT(Tcontrol_t ) ** out_UPDATE_RAS_PUSH ; //[nb_inst_update] |
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| 145 | public : SC_OUT(Taddress_t ) ** out_UPDATE_RAS_ADDRESS ; //[nb_inst_update] |
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| 146 | public : SC_OUT(Tptr_t ) ** out_UPDATE_RAS_INDEX ; //[nb_inst_update] |
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[81] | 147 | |
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[94] | 148 | // ~~~~~[ Interface : "event" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[97] | 149 | public : SC_IN (Tcontrol_t ) ** in_EVENT_VAL ; //[nb_context] |
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| 150 | public : SC_OUT(Tcontrol_t ) ** out_EVENT_ACK ; //[nb_context] |
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[94] | 151 | public : SC_IN (Tevent_type_t ) ** in_EVENT_TYPE ; //[nb_context] |
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| 152 | public : SC_IN (Tdepth_t ) ** in_EVENT_DEPTH ; //[nb_context] |
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| 153 | |
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[81] | 154 | // ~~~~~[ Interface : "depth" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[101] | 155 | public : SC_OUT(Tcontrol_t ) ** out_DEPTH_VAL ; //[nb_context] |
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[88] | 156 | public : SC_OUT(Tdepth_t ) ** out_DEPTH_CURRENT ; //[nb_context] |
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| 157 | public : SC_OUT(Tdepth_t ) ** out_DEPTH_MIN ; //[nb_context] |
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| 158 | public : SC_OUT(Tdepth_t ) ** out_DEPTH_MAX ; //[nb_context] |
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[101] | 159 | public : SC_OUT(Tcontrol_t ) ** out_DEPTH_FULL ; //[nb_context] |
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[88] | 160 | // If DEPTH_CURRENT : |
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| 161 | // equal at DEPTH_MIN -> not speculative |
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| 162 | // not include ]DEPTH_MIN:DEPTH_MAX[ -> previous branch miss |
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| 163 | // include ]DEPTH_MIN:DEPTH_MAX[ -> speculative |
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[81] | 164 | |
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[78] | 165 | // ~~~~~[ Component ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 166 | |
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| 167 | // ~~~~~[ Register ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[88] | 168 | private : uint32_t reg_UPDATE_PRIORITY ; |
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| 169 | |
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| 170 | private : ufpt_entry_t ** reg_UPDATE_FETCH_PREDICTION_TABLE ; //[nb_context][size_ufpt_queue] |
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| 171 | private : uint32_t * reg_UFPT_BOTTOM ; //[nb_context] |
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| 172 | private : uint32_t * reg_UFPT_TOP ; //[nb_context] |
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| 173 | private : uint32_t * reg_UFPT_UPDATE ; //[nb_context] |
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| 174 | private : uint32_t * reg_UFPT_NB_NEED_UPDATE ; //[nb_context] |
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[106] | 175 | private : uint32_t * reg_UFPT_NB_UPDATE ; //[nb_context] |
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[88] | 176 | |
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| 177 | private : upt_entry_t ** reg_UPDATE_PREDICTION_TABLE ; //[nb_context][size_upt_queue] |
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| 178 | private : uint32_t * reg_UPT_BOTTOM ; //[nb_context] |
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| 179 | private : uint32_t * reg_UPT_TOP ; //[nb_context] |
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[95] | 180 | private : uint32_t * reg_UPT_TOP_EVENT ; //[nb_context] |
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[88] | 181 | private : uint32_t * reg_UPT_UPDATE ; //[nb_context] |
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[101] | 182 | private : bool * reg_UPT_EMPTY ; //[nb_context] |
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[88] | 183 | |
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| 184 | private : bool * reg_IS_ACCURATE ; //[nb_context] |
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[78] | 185 | |
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[122] | 186 | private : ufpt_event_state_t * reg_UFPT_EVENT_STATE ; //[nb_context] |
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| 187 | private : upt_event_state_t * reg_UPT_EVENT_STATE ; //[nb_context] |
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| 188 | |
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| 189 | // private : bool * reg_EVENT_VAL ; //[nb_context] |
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[105] | 190 | private : uint32_t * reg_EVENT_UPT_PTR ; //[nb_context] |
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[112] | 191 | private : bool * reg_EVENT_UPT_FULL ; //[nb_context] |
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[105] | 192 | |
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[122] | 193 | // private : event_state_t * reg_EVENT_STATE ; //[nb_context] |
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| 194 | // private : bool * reg_EVENT_IS_BRANCH ; //[nb_context] |
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[98] | 195 | private : Tdepth_t * reg_EVENT_DEPTH ; //[nb_context] |
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[88] | 196 | private : Taddress_t * reg_EVENT_ADDRESS_SRC ; //[nb_context] // Address branch |
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[94] | 197 | private : Tcontrol_t * reg_EVENT_ADDRESS_DEST_VAL ; //[nb_context] // if miss ifetch, decod issue branch, dest must be reload |
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[88] | 198 | private : Taddress_t * reg_EVENT_ADDRESS_DEST ; //[nb_context] // Address dest |
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[119] | 199 | private : bool * reg_EVENT_CAN_CONTINUE ; //[nb_context] |
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[88] | 200 | |
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[78] | 201 | // ~~~~~[ Internal ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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[81] | 202 | private : Tcontrol_t * internal_PREDICT_ACK ; //[nb_inst_predict] |
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[88] | 203 | private : Tdepth_t * internal_PREDICT_UPDATE_PREDICTION_ID ; //[nb_inst_predict] |
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[81] | 204 | private : Tcontrol_t * internal_DECOD_ACK ; //[nb_inst_decod] |
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[88] | 205 | private : uint32_t * internal_DECOD_UPT_PTR_WRITE ; //[nb_inst_decod] |
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[81] | 206 | private : Tcontrol_t * internal_BRANCH_COMPLETE_ACK ; //[nb_inst_branch_complete] |
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| 207 | private : Tcontrol_t * internal_BRANCH_COMPLETE_MISS_PREDICTION; //[nb_inst_branch_complete] |
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| 208 | private : Tcontrol_t * internal_BRANCH_COMPLETE_TAKE ; //[nb_inst_branch_complete] |
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| 209 | private : Taddress_t * internal_BRANCH_COMPLETE_ADDRESS_DEST ; //[nb_inst_branch_complete] |
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[82] | 210 | private : Tcontrol_t * internal_BRANCH_EVENT_VAL ; //[nb_context] |
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| 211 | private : Tdepth_t * internal_BRANCH_EVENT_DEPTH ; //[nb_context] |
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[81] | 212 | private : Tcontrol_t * internal_UPDATE_VAL ; //[nb_inst_update] |
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[88] | 213 | private : Tcontrol_t * internal_UPDATE_VAL_WITHOUT_ACK ; //[nb_inst_update] |
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[81] | 214 | private : Tcontext_t * internal_UPDATE_CONTEXT_ID ; //[nb_inst_update] |
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[88] | 215 | private : bool * internal_UPDATE_FROM_UFPT ; //[nb_inst_update] |
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[81] | 216 | private : Tdepth_t * internal_UPDATE_DEPTH ; //[nb_inst_update] |
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[88] | 217 | private : bool * internal_UPDATE_RAS ; //[nb_inst_update] |
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[97] | 218 | private : Tcontrol_t * internal_EVENT_ACK ; //[nb_context] |
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[88] | 219 | |
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[111] | 220 | #if defined(DEBUG) and defined(DEBUG_Update_Prediction_Table) and (DEBUG_Update_Prediction_Table == true) |
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| 221 | private : std::ofstream * branchement_log_file; |
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[78] | 222 | #endif |
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| 223 | |
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[111] | 224 | #endif |
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| 225 | |
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[78] | 226 | // -----[ Methods ]--------------------------------------------------- |
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| 227 | |
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| 228 | #ifdef SYSTEMC |
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| 229 | SC_HAS_PROCESS (Update_Prediction_Table); |
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| 230 | #endif |
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| 231 | public : Update_Prediction_Table |
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| 232 | ( |
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| 233 | #ifdef SYSTEMC |
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| 234 | sc_module_name name, |
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| 235 | #else |
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| 236 | std::string name, |
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| 237 | #endif |
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| 238 | #ifdef STATISTICS |
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| 239 | morpheo::behavioural::Parameters_Statistics * param_statistics, |
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| 240 | #endif |
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| 241 | Parameters * param, |
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[81] | 242 | morpheo::behavioural::Tusage_t usage |
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[78] | 243 | ); |
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| 244 | public : ~Update_Prediction_Table (void); |
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| 245 | |
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| 246 | private : void allocation ( |
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| 247 | #ifdef STATISTICS |
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| 248 | morpheo::behavioural::Parameters_Statistics * param_statistics |
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| 249 | #else |
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| 250 | void |
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| 251 | #endif |
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| 252 | ); |
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| 253 | private : void deallocation (void); |
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| 254 | |
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| 255 | #ifdef SYSTEMC |
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[131] | 256 | public : void constant (void); |
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[78] | 257 | public : void transition (void); |
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[81] | 258 | public : void genMoore (void); |
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| 259 | public : void genMealy_predict (void); |
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| 260 | public : void genMealy_decod (void); |
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| 261 | public : void genMealy_branch_complete (void); |
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| 262 | //public : void genMealy_update (void); |
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[78] | 263 | #endif |
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| 264 | |
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| 265 | #if VHDL |
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| 266 | public : void vhdl (void); |
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| 267 | private : void vhdl_declaration (Vhdl * & vhdl); |
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| 268 | private : void vhdl_body (Vhdl * & vhdl); |
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| 269 | #endif |
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| 270 | |
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| 271 | #ifdef STATISTICS |
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| 272 | public : void statistics_allocation (morpheo::behavioural::Parameters_Statistics * param_statistics); |
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| 273 | public : void statistics_deallocation (void); |
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| 274 | #endif |
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| 275 | #if defined(STATISTICS) or defined(VHDL_TESTBENCH) |
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| 276 | private : void end_cycle (void); |
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| 277 | #endif |
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| 278 | }; |
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| 279 | |
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| 280 | }; // end namespace update_prediction_table |
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| 281 | }; // end namespace prediction_unit |
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| 282 | }; // end namespace front_end |
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| 283 | }; // end namespace multi_front_end |
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| 284 | }; // end namespace core |
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| 285 | |
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| 286 | }; // end namespace behavioural |
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| 287 | }; // end namespace morpheo |
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| 288 | |
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| 289 | #endif |
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