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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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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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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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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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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91 | PORT_WRITE(out_UPDATE_RAS_PUSH [i],push); |
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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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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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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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