[81] | 1 | #ifdef SYSTEMC |
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| 2 | /* |
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| 3 | * $Id$ |
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| 4 | * |
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| 5 | * [ Description ] |
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| 6 | * |
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| 7 | */ |
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| 8 | |
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| 9 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/include/Update_Prediction_Table.h" |
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| 10 | |
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| 11 | namespace morpheo { |
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| 12 | namespace behavioural { |
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| 13 | namespace core { |
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| 14 | namespace multi_front_end { |
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| 15 | namespace front_end { |
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| 16 | namespace prediction_unit { |
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| 17 | namespace update_prediction_table { |
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| 18 | |
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| 19 | |
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| 20 | #undef FUNCTION |
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| 21 | #define FUNCTION "Update_Prediction_Table::genMoore" |
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| 22 | void Update_Prediction_Table::genMoore (void) |
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| 23 | { |
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| 24 | log_printf(FUNC,Update_Prediction_Table,FUNCTION,"Begin"); |
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| 25 | |
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| 26 | // =================================================================== |
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| 27 | // =====[ DEPTH ]===================================================== |
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| 28 | // =================================================================== |
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| 29 | |
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[82] | 30 | for (uint32_t i=0; i<_param->_nb_context; i++) |
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| 31 | { |
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| 32 | if (_param->_have_port_depth [i]) |
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| 33 | { |
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| 34 | PORT_WRITE(out_DEPTH_TAIL [i], reg_BOTTOM [i]); |
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| 35 | } |
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| 36 | PORT_WRITE(out_DEPTH_NB_BRANCH [i], reg_NB_ELT [i]); |
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| 37 | } |
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[81] | 38 | // =================================================================== |
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| 39 | // =====[ UPDATE ]==================================================== |
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| 40 | // =================================================================== |
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| 41 | |
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| 42 | Tdepth_t tab_depth [_param->_nb_context]; |
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| 43 | for (uint32_t i=0; i<_param->_nb_context; i++) |
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| 44 | tab_depth [i] = reg_BOTTOM [i]; |
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| 45 | |
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| 46 | for (uint32_t i=0; i<_param->_nb_inst_update; i++) |
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| 47 | { |
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| 48 | uint32_t context = (reg_UPDATE_PRIORITY+i)%_param->_nb_context; |
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| 49 | Tdepth_t depth = tab_depth[context]; |
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| 50 | state_t state = reg_UPDATE_PREDICTION_TABLE [context][depth]._state; |
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| 51 | |
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| 52 | Tcontrol_t val = ((state == UPDATE_PREDICTION_STATE_OK) or |
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| 53 | (state == UPDATE_PREDICTION_STATE_KO)); |
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| 54 | |
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| 55 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION,"UPDATE [%d] (genMoore)",i); |
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| 56 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION," * context : %d",context); |
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| 57 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION," * depth : %d",depth); |
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| 58 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION," * state : %s",toString(state).c_str()); |
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| 59 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION," * val : %d",val); |
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| 60 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION," * addr_src : %x",reg_UPDATE_PREDICTION_TABLE [context][depth]._address_src ); |
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| 61 | // log_printf(TRACE,Update_Prediction_Table,FUNCTION," * addr_dest : %x",reg_UPDATE_PREDICTION_TABLE [context][depth]._address_dest); |
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| 62 | |
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| 63 | if (val) |
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| 64 | { |
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| 65 | Tbranch_condition_t cond = reg_UPDATE_PREDICTION_TABLE [context][depth]._condition; |
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| 66 | |
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| 67 | Tcontrol_t ifetch = reg_UPDATE_PREDICTION_TABLE [context][depth]._ifetch_prediction; |
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| 68 | Tcontrol_t btb_val = true; |
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| 69 | Tcontrol_t dir_val = (ifetch and // not ifetch == static prediction |
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| 70 | ((cond == BRANCH_CONDITION_FLAG_UNSET) or |
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| 71 | (cond == BRANCH_CONDITION_FLAG_SET))); |
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| 72 | Tcontrol_t ras_val = ((cond == BRANCH_CONDITION_NONE_WITH_WRITE_STACK) or |
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| 73 | (cond == BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK) or |
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| 74 | (cond == BRANCH_CONDITION_READ_STACK)); |
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[82] | 75 | |
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| 76 | Tcontrol_t push = ((cond == BRANCH_CONDITION_NONE_WITH_WRITE_STACK) or |
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| 77 | (cond == BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK)); |
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| 78 | |
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[81] | 79 | if (_param->_have_port_context_id) |
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| 80 | PORT_WRITE(out_UPDATE_CONTEXT_ID [i],context); |
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| 81 | PORT_WRITE(out_UPDATE_MISS_PREDICTION [i],(state == UPDATE_PREDICTION_STATE_KO)); |
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| 82 | PORT_WRITE(out_UPDATE_DIRECTION_GOOD [i],reg_UPDATE_PREDICTION_TABLE [context][depth]._good_take ); |
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| 83 | PORT_WRITE(out_UPDATE_BTB_VAL [i],btb_val); |
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| 84 | PORT_WRITE(out_UPDATE_BTB_ADDRESS_SRC [i],reg_UPDATE_PREDICTION_TABLE [context][depth]._address_src ); |
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| 85 | PORT_WRITE(out_UPDATE_BTB_ADDRESS_DEST [i],reg_UPDATE_PREDICTION_TABLE [context][depth]._address_dest); |
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| 86 | PORT_WRITE(out_UPDATE_BTB_CONDITION [i],cond); |
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| 87 | PORT_WRITE(out_UPDATE_DIR_VAL [i],dir_val); |
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| 88 | if (_param->_have_port_history) |
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| 89 | PORT_WRITE(out_UPDATE_DIR_HISTORY [i],reg_UPDATE_PREDICTION_TABLE [context][depth]._history ); |
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| 90 | PORT_WRITE(out_UPDATE_RAS_VAL [i],ras_val); |
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[82] | 91 | PORT_WRITE(out_UPDATE_RAS_PUSH [i],push); |
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[81] | 92 | PORT_WRITE(out_UPDATE_RAS_ADDRESS [i],reg_UPDATE_PREDICTION_TABLE [context][depth]._address_ras ); |
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| 93 | PORT_WRITE(out_UPDATE_RAS_INDEX [i],reg_UPDATE_PREDICTION_TABLE [context][depth]._index_ras ); |
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| 94 | PORT_WRITE(out_UPDATE_RAS_PREDICTION_IFETCH [i],ifetch); |
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| 95 | |
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| 96 | internal_UPDATE_CONTEXT_ID [i] = context; |
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| 97 | internal_UPDATE_DEPTH [i] = depth; |
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| 98 | |
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| 99 | tab_depth[context] = (depth+1)%_param->_size_queue[context]; |
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| 100 | } |
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| 101 | |
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| 102 | internal_UPDATE_VAL [i] = val; |
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| 103 | PORT_WRITE(out_UPDATE_VAL [i], internal_UPDATE_VAL [i]); |
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| 104 | } |
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| 105 | |
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[82] | 106 | // =================================================================== |
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| 107 | // =====[ BRANCH_EVENT ]============================================== |
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| 108 | // =================================================================== |
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| 109 | for (uint32_t i=0; i<_param->_nb_context; i++) |
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| 110 | { |
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| 111 | Tdepth_t depth = (reg_BOTTOM [i] + reg_NB_ELT_UPDATE [i])%_param->_size_queue [i]; |
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| 112 | state_t state = reg_UPDATE_PREDICTION_TABLE [i][depth]._state; |
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| 113 | |
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| 114 | Tcontrol_t val = (state == UPDATE_PREDICTION_STATE_EVENT); |
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| 115 | |
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| 116 | if (val) |
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| 117 | { |
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| 118 | PORT_WRITE(out_BRANCH_EVENT_ADDRESS_SRC [i], reg_UPDATE_PREDICTION_TABLE [i][depth]._address_src ); |
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| 119 | PORT_WRITE(out_BRANCH_EVENT_ADDRESS_DEST [i], reg_UPDATE_PREDICTION_TABLE [i][depth]._address_dest); |
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| 120 | internal_BRANCH_EVENT_DEPTH [i] = depth; |
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| 121 | } |
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| 122 | |
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| 123 | internal_BRANCH_EVENT_VAL [i] = val; |
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| 124 | PORT_WRITE(out_BRANCH_EVENT_VAL [i], internal_BRANCH_EVENT_VAL [i]); |
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| 125 | } |
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[81] | 126 | log_printf(FUNC,Update_Prediction_Table,FUNCTION,"End"); |
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| 127 | }; |
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| 128 | |
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| 129 | }; // end namespace update_prediction_table |
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| 130 | }; // end namespace prediction_unit |
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| 131 | }; // end namespace front_end |
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| 132 | }; // end namespace multi_front_end |
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| 133 | }; // end namespace core |
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| 134 | |
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| 135 | }; // end namespace behavioural |
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| 136 | }; // end namespace morpheo |
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| 137 | #endif |
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