[110] | 1 | /* |
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| 2 | * $Id: Two_Level_Branch_Predictor_allocation.cpp 112 2009-03-18 22:36:26Z rosiere $ |
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| 3 | * |
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| 4 | * [ Description ] |
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| 5 | * |
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| 6 | */ |
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| 7 | |
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| 8 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/include/Two_Level_Branch_Predictor.h" |
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| 9 | #include "Behavioural/include/Allocation.h" |
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| 10 | #include "Common/include/Max.h" |
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| 11 | |
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| 12 | namespace morpheo { |
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| 13 | namespace behavioural { |
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| 14 | namespace core { |
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| 15 | namespace multi_front_end { |
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| 16 | namespace front_end { |
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| 17 | namespace prediction_unit { |
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| 18 | namespace direction { |
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| 19 | namespace meta_predictor { |
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| 20 | namespace two_level_branch_predictor { |
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| 21 | |
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| 22 | #undef FUNCTION |
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| 23 | #define FUNCTION "Two_Level_Branch_Predictor::allocation" |
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| 24 | void Two_Level_Branch_Predictor::allocation ( |
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| 25 | #ifdef STATISTICS |
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| 26 | morpheo::behavioural::Parameters_Statistics * param_statistics |
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| 27 | #else |
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| 28 | void |
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| 29 | #endif |
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| 30 | ) |
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| 31 | { |
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| 32 | log_begin(Two_Level_Branch_Predictor,FUNCTION); |
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| 33 | |
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| 34 | _component = new Component (_usage); |
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| 35 | |
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| 36 | Entity * entity = _component->set_entity (_name |
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| 37 | ,"Two_Level_Branch_Predictor" |
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| 38 | #ifdef POSITION |
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| 39 | ,COMBINATORY |
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| 40 | #endif |
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| 41 | ); |
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| 42 | |
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| 43 | _interfaces = entity->set_interfaces(); |
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| 44 | |
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| 45 | // ~~~~~[ Interface : "" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 46 | { |
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| 47 | Interface * interface = _interfaces->set_interface("" |
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| 48 | #ifdef POSITION |
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| 49 | ,IN |
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| 50 | ,SOUTH, |
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| 51 | _("Generalist interface") |
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| 52 | #endif |
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| 53 | ); |
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| 54 | |
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| 55 | in_CLOCK = interface->set_signal_clk ("clock" ,1, CLOCK_VHDL_YES); |
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| 56 | in_NRESET = interface->set_signal_in <Tcontrol_t> ("nreset",1, RESET_VHDL_YES); |
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| 57 | } |
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[111] | 58 | |
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| 59 | // ~~~~~[ Interface : "predict" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 60 | { |
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[112] | 61 | ALLOC1_INTERFACE_BEGIN("predict",IN,WEST,_("Predict direction interface"),_param->_nb_inst_predict); |
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[111] | 62 | |
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| 63 | ALLOC1_VALACK_IN ( in_PREDICT_VAL ,VAL); |
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| 64 | ALLOC1_VALACK_OUT(out_PREDICT_ACK ,ACK); |
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| 65 | ALLOC1_SIGNAL_IN ( in_PREDICT_ADDRESS ,"ADDRESS" ,Taddress_t,_param->_size_address); |
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| 66 | ALLOC1_SIGNAL_OUT(out_PREDICT_DIRECTION ,"DIRECTION" ,Tcontrol_t,1 ); |
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| 67 | ALLOC1_SIGNAL_OUT(out_PREDICT_HISTORY ,"HISTORY" ,Thistory_t,_param->_size_history); |
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| 68 | if (_param->_update_on_prediction) |
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| 69 | { |
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| 70 | ALLOC1_SIGNAL_IN ( in_PREDICT_DIRECTION_VAL,"DIRECTION_VAL",Tcontrol_t,1 ); |
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| 71 | ALLOC1_SIGNAL_IN ( in_PREDICT_DIRECTION ,"DIRECTION" ,Tcontrol_t,1 ); |
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| 72 | } |
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[112] | 73 | |
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| 74 | ALLOC1_INTERFACE_END(_param->_nb_inst_predict); |
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[111] | 75 | } |
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| 76 | |
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| 77 | // ~~~~~[ Interface : "update" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 78 | { |
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[112] | 79 | ALLOC1_INTERFACE_BEGIN("update",IN,WEST,_("Update direction interface"),_param->_nb_inst_update); |
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[111] | 80 | |
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| 81 | ALLOC1_VALACK_IN ( in_UPDATE_VAL ,VAL); |
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| 82 | ALLOC1_VALACK_OUT(out_UPDATE_ACK ,ACK); |
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| 83 | ALLOC1_SIGNAL_IN ( in_UPDATE_ADDRESS ,"ADDRESS" ,Taddress_t,_param->_size_address); |
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| 84 | ALLOC1_SIGNAL_IN ( in_UPDATE_HISTORY ,"HISTORY" ,Thistory_t,_param->_size_history); |
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[112] | 85 | ALLOC1_SIGNAL_IN ( in_UPDATE_HISTORY_VAL ,"HISTORY_VAL" ,Tcontrol_t,1 ); |
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[111] | 86 | ALLOC1_SIGNAL_IN ( in_UPDATE_DIRECTION ,"DIRECTION" ,Tcontrol_t,1 ); |
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| 87 | if (_param->_update_on_prediction) |
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| 88 | ALLOC1_SIGNAL_IN ( in_UPDATE_MISS ,"MISS" ,Tcontrol_t,1 ); |
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[112] | 89 | |
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| 90 | ALLOC1_INTERFACE_END(_param->_nb_inst_update); |
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[111] | 91 | } |
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| 92 | |
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[112] | 93 | // ~~~~~[ Register ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 94 | |
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[111] | 95 | if (usage_is_set(_usage,USE_SYSTEMC)) |
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| 96 | { |
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| 97 | if (_param->_have_bht) |
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| 98 | { |
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| 99 | ALLOC1(reg_BHT ,Thistory_t,_param->_bht_nb_shifter); |
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| 100 | |
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| 101 | for (uint32_t i=0; i<_param->_bht_nb_shifter; ++i) |
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| 102 | reg_BHT [i] = 0; |
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| 103 | } |
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| 104 | |
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| 105 | if (_param->_have_pht) |
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| 106 | { |
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| 107 | ALLOC2(reg_PHT ,Thistory_t,_param->_pht_nb_bank,_param->_pht_size_bank); |
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| 108 | |
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| 109 | for (uint32_t i=0; i<_param->_pht_nb_bank; ++i) |
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| 110 | for (uint32_t j=0; j<_param->_pht_size_bank; ++j) |
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| 111 | reg_PHT [i][j] = 0; |
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| 112 | } |
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| 113 | |
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| 114 | |
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| 115 | ALLOC1(internal_PREDICT_ACK ,Tcontrol_t,_param->_nb_inst_predict); |
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| 116 | if (_param->_update_on_prediction) |
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| 117 | { |
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| 118 | if (_param->_have_bht) |
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| 119 | ALLOC1(internal_PREDICT_BHT_NUM_REG ,Thistory_t,_param->_nb_inst_predict); |
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| 120 | if (_param->_have_pht) |
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| 121 | { |
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| 122 | ALLOC1(internal_PREDICT_PHT_NUM_BANK ,Thistory_t,_param->_nb_inst_predict); |
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| 123 | ALLOC1(internal_PREDICT_PHT_NUM_REG ,Thistory_t,_param->_nb_inst_predict); |
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| 124 | } |
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| 125 | } |
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| 126 | ALLOC1(internal_UPDATE_ACK ,Tcontrol_t,_param->_nb_inst_update ); |
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| 127 | } |
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| 128 | |
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[110] | 129 | // ~~~~~[ Component ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 130 | #ifdef POSITION |
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| 131 | if (usage_is_set(_usage,USE_POSITION)) |
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| 132 | _component->generate_file(); |
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| 133 | #endif |
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| 134 | |
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| 135 | log_end(Two_Level_Branch_Predictor,FUNCTION); |
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| 136 | }; |
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| 137 | |
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| 138 | }; // end namespace two_level_branch_predictor |
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| 139 | }; // end namespace meta_predictor |
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| 140 | }; // end namespace direction |
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| 141 | }; // end namespace prediction_unit |
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| 142 | }; // end namespace front_end |
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| 143 | }; // end namespace multi_front_end |
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| 144 | }; // end namespace core |
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| 145 | |
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| 146 | }; // end namespace behavioural |
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| 147 | }; // end namespace morpheo |
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