1 | #ifndef morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_return_address_stack_Return_Address_Stack_h |
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2 | #define morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_return_address_stack_Return_Address_Stack_h |
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3 | |
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4 | /* |
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5 | * $Id: Return_Address_Stack.h 82 2008-05-01 16:48:45Z 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/Return_Address_Stack/include/Types.h" |
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20 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Return_Address_Stack/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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29 | |
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30 | namespace morpheo { |
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31 | namespace behavioural { |
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32 | |
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33 | namespace core { |
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34 | namespace multi_front_end { |
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35 | namespace front_end { |
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36 | namespace prediction_unit { |
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37 | namespace return_address_stack { |
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38 | |
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39 | |
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40 | class Return_Address_Stack |
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41 | #if SYSTEMC |
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42 | : public sc_module |
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43 | #endif |
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44 | { |
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45 | // -----[ fields ]---------------------------------------------------- |
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46 | // Parameters |
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47 | protected : const std::string _name; |
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48 | protected : const Parameters * _param; |
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49 | private : const Tusage_t _usage; |
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50 | |
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51 | #ifdef STATISTICS |
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52 | public : Stat * _stat; |
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53 | #endif |
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54 | |
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55 | public : Component * _component; |
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56 | private : Interfaces * _interfaces; |
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57 | |
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58 | #ifdef SYSTEMC |
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59 | // ~~~~~[ Interface ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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60 | // ~~~~~[ Interface : "" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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61 | public : SC_CLOCK * in_CLOCK ; |
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62 | public : SC_IN (Tcontrol_t) * in_NRESET ; |
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63 | |
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64 | // ~~~~~[ Interface : "predict" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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65 | public : SC_IN (Tcontrol_t) ** in_PREDICT_VAL ; //[nb_inst_predict] |
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66 | public : SC_OUT(Tcontrol_t) ** out_PREDICT_ACK ; //[nb_inst_predict] |
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67 | public : SC_IN (Tcontext_t) ** in_PREDICT_CONTEXT_ID ; //[nb_inst_predict] |
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68 | public : SC_OUT(Tcontrol_t) ** out_PREDICT_HIT ; //[nb_inst_predict] |
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69 | public : SC_IN (Tcontrol_t) ** in_PREDICT_PUSH ; //[nb_inst_predict] 1 = push, else pop |
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70 | public : SC_IN (Taddress_t) ** in_PREDICT_ADDRESS_PUSH ; //[nb_inst_predict] |
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71 | public : SC_OUT(Taddress_t) ** out_PREDICT_ADDRESS_POP ; //[nb_inst_predict] if pop:addr_top else addr_old |
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72 | public : SC_OUT(Tptr_t ) ** out_PREDICT_INDEX ; //[nb_inst_predict] |
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73 | |
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74 | // ~~~~~[ Interface : "decod" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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75 | public : SC_IN (Tcontrol_t) ** in_DECOD_VAL ; //[nb_inst_decod] |
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76 | public : SC_OUT(Tcontrol_t) ** out_DECOD_ACK ; //[nb_inst_decod] |
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77 | public : SC_IN (Tcontext_t) ** in_DECOD_CONTEXT_ID ; //[nb_inst_decod] |
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78 | public : SC_OUT(Tcontrol_t) ** out_DECOD_HIT ; //[nb_inst_decod] |
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79 | public : SC_IN (Tcontrol_t) ** in_DECOD_PUSH ; //[nb_inst_decod] 1 = push, else pop |
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80 | public : SC_IN (Taddress_t) ** in_DECOD_ADDRESS_PUSH ; //[nb_inst_decod] |
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81 | public : SC_OUT(Taddress_t) ** out_DECOD_ADDRESS_POP ; //[nb_inst_decod] if pop:addr_top else addr_old |
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82 | public : SC_OUT(Tptr_t ) ** out_DECOD_INDEX ; //[nb_inst_decod] |
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83 | public : SC_IN (Tcontrol_t) ** in_DECOD_MISS_PREDICTION ; //[nb_inst_decod] predict at stage 1 is a miss |
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84 | |
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85 | // ~~~~~[ Interface : "update" ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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86 | public : SC_IN (Tcontrol_t) ** in_UPDATE_VAL ; //[nb_inst_update] |
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87 | public : SC_OUT(Tcontrol_t) ** out_UPDATE_ACK ; //[nb_inst_update] |
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88 | public : SC_IN (Tcontext_t) ** in_UPDATE_CONTEXT_ID ; //[nb_inst_update] |
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89 | public : SC_IN (Tcontrol_t) ** in_UPDATE_PUSH ; //[nb_inst_update] 1 = push, else pop |
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90 | public : SC_IN (Taddress_t) ** in_UPDATE_ADDRESS ; //[nb_inst_update] |
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91 | public : SC_IN (Tptr_t ) ** in_UPDATE_INDEX ; //[nb_inst_update] |
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92 | public : SC_IN (Tcontrol_t) ** in_UPDATE_MISS_PREDICTION ; //[nb_inst_update] |
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93 | public : SC_IN (Tcontrol_t) ** in_UPDATE_PREDICTION_IFETCH; //[nb_inst_update] // prediction only ifetch |
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94 | |
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95 | // ~~~~~[ Component ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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96 | |
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97 | // ~~~~~[ Register ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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98 | private : ras_entry_t ** reg_stack ; //[nb_context][size_queue] |
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99 | private : Tptr_t * reg_TOP ; //[nb_context] |
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100 | private : Tptr_t * reg_BOTTOM ; //[nb_context] |
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101 | private : Tptr_t * reg_NB_ELT ; //[nb_context] |
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102 | private : Tptr_t * reg_PREDICT_TOP ; //[nb_context] |
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103 | private : Tptr_t * reg_PREDICT_BOTTOM; //[nb_context] |
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104 | private : Tptr_t * reg_PREDICT_NB_ELT; //[nb_context] |
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105 | |
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106 | // ~~~~~[ Internal ]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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107 | public : Tcontrol_t * internal_PREDICT_ACK; //[nb_inst_predict] |
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108 | public : Tcontrol_t * internal_PREDICT_HIT; //[nb_inst_predict] |
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109 | public : Tcontrol_t * internal_DECOD_ACK ; //[nb_inst_decod ] |
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110 | public : Tcontrol_t * internal_DECOD_HIT ; //[nb_inst_decod ] |
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111 | public : Tcontrol_t * internal_UPDATE_ACK ; //[nb_inst_update ] |
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112 | #endif |
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113 | |
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114 | // -----[ Methods ]--------------------------------------------------- |
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115 | |
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116 | #ifdef SYSTEMC |
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117 | SC_HAS_PROCESS (Return_Address_Stack); |
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118 | #endif |
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119 | public : Return_Address_Stack |
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120 | ( |
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121 | #ifdef SYSTEMC |
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122 | sc_module_name name, |
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123 | #else |
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124 | std::string name, |
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125 | #endif |
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126 | #ifdef STATISTICS |
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127 | morpheo::behavioural::Parameters_Statistics * param_statistics, |
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128 | #endif |
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129 | Parameters * param, |
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130 | morpheo::behavioural::Tusage_t usage |
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131 | ); |
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132 | public : ~Return_Address_Stack (void); |
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133 | |
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134 | private : void allocation ( |
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135 | #ifdef STATISTICS |
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136 | morpheo::behavioural::Parameters_Statistics * param_statistics |
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137 | #else |
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138 | void |
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139 | #endif |
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140 | ); |
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141 | private : void deallocation (void); |
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142 | |
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143 | #ifdef SYSTEMC |
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144 | public : void transition (void); |
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145 | public : void genMealy_predict (void); |
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146 | public : void genMealy_decod (void); |
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147 | // public : void genMealy_update (void); |
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148 | #endif |
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149 | |
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150 | #if VHDL |
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151 | public : void vhdl (void); |
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152 | private : void vhdl_declaration (Vhdl * & vhdl); |
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153 | private : void vhdl_body (Vhdl * & vhdl); |
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154 | #endif |
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155 | |
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156 | #ifdef STATISTICS |
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157 | public : void statistics_allocation (morpheo::behavioural::Parameters_Statistics * param_statistics); |
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158 | public : void statistics_deallocation (void); |
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159 | #endif |
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160 | #if defined(STATISTICS) or defined(VHDL_TESTBENCH) |
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161 | private : void end_cycle (void); |
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162 | #endif |
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163 | }; |
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164 | |
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165 | }; // end namespace return_address_stack |
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166 | }; // end namespace prediction_unit |
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167 | }; // end namespace front_end |
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168 | }; // end namespace multi_front_end |
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169 | }; // end namespace core |
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170 | |
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171 | }; // end namespace behavioural |
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172 | }; // end namespace morpheo |
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173 | |
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174 | #endif |
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