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::genMealy_branch_complete" |
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22 | void Update_Prediction_Table::genMealy_branch_complete (void) |
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23 | { |
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24 | log_begin(Update_Prediction_Table,FUNCTION); |
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25 | log_function(Update_Prediction_Table,FUNCTION,_name.c_str()); |
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26 | |
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27 | for (uint32_t i=0; i<_param->_nb_inst_branch_complete; i++) |
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28 | #ifdef DEBUG_TEST |
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29 | // just to don't have exception in not transaction |
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30 | if (PORT_READ(in_BRANCH_COMPLETE_VAL [i])) |
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31 | #endif |
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32 | { |
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33 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_COMPLETE [%d]",i); |
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34 | |
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35 | Tcontext_t context = (_param->_have_port_context_id)?PORT_READ(in_BRANCH_COMPLETE_CONTEXT_ID [i]):0; |
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36 | Tdepth_t depth = (_param->_have_port_depth )?PORT_READ(in_BRANCH_COMPLETE_DEPTH [i]):0; |
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37 | Tcontrol_t miss = false; |
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38 | Tcontrol_t take = reg_UPDATE_PREDICTION_TABLE [context][depth]._last_take ; |
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39 | Taddress_t addr_dest = reg_UPDATE_PREDICTION_TABLE [context][depth]._address_dest; |
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40 | Tbranch_condition_t condition = reg_UPDATE_PREDICTION_TABLE [context][depth]._condition ; |
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41 | |
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42 | Tcontrol_t flag = PORT_READ(in_BRANCH_COMPLETE_FLAG [i]); |
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43 | Taddress_t addr_good = PORT_READ(in_BRANCH_COMPLETE_ADDRESS [i]); |
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44 | |
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45 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * context : %d",context); |
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46 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * depth : %d",depth ); |
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47 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * condition : %s",toString(condition).c_str()); |
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48 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * flag : %d",flag); |
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49 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * address_good : %.8x",addr_good); |
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50 | |
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51 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * (before)"); |
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52 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * miss : %d",miss); |
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53 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * take : %d",take); |
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54 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * address_dest : %.8x",addr_dest); |
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55 | |
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56 | switch (condition) |
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57 | { |
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58 | case BRANCH_CONDITION_NONE_WITHOUT_WRITE_STACK : // l.j |
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59 | case BRANCH_CONDITION_NONE_WITH_WRITE_STACK : // l.jal |
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60 | { |
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61 | //miss : always hit |
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62 | //addr_dest : compute in decod stage |
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63 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_NONE_WITHOUT_WRITE_STACK"); |
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64 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_NONE_WITH_WRITE_STACK "); |
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65 | |
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66 | #ifdef DEBUG_TEST |
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67 | if (take != 1) |
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68 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad direction.",i,toString(condition).c_str())); |
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69 | if (addr_dest != addr_good) |
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70 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad destination address.",i,toString(condition).c_str())); |
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71 | #endif |
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72 | |
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73 | break; |
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74 | } |
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75 | case BRANCH_CONDITION_FLAG_UNSET : // l.bnf |
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76 | { |
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77 | //addr_dest : compute in decod stage |
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78 | //miss if the direction is bad |
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79 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_FLAG_UNSET"); |
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80 | |
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81 | Tcontrol_t take_good = not flag; // flag set = not take |
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82 | |
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83 | miss = (take != take_good); |
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84 | take = take_good; |
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85 | |
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86 | #ifdef DEBUG_TEST |
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87 | if (addr_dest != addr_good) |
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88 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad destination address.",i,toString(condition).c_str())); |
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89 | #endif |
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90 | |
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91 | break; |
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92 | } |
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93 | case BRANCH_CONDITION_FLAG_SET : // l.bf |
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94 | { |
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95 | //addr_dest : compute in decod stage |
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96 | //miss if the direction is bad |
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97 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_FLAG_SET"); |
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98 | |
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99 | Tcontrol_t take_good = flag; // flag set = take |
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100 | |
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101 | miss = (take != take_good); |
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102 | take = take_good; |
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103 | |
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104 | #ifdef DEBUG_TEST |
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105 | if (addr_dest != addr_good) |
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106 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad destination address.",i,toString(condition).c_str())); |
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107 | #endif |
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108 | |
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109 | break; |
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110 | } |
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111 | case BRANCH_CONDITION_READ_REGISTER_WITHOUT_WRITE_STACK : // l.jr (rb!=r9) |
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112 | case BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK : // l.jalr |
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113 | case BRANCH_CONDITION_READ_STACK : // l.jr (rb==r9) |
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114 | { |
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115 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_READ_REGISTER_WITHOUT_WRITE_STACK"); |
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116 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK "); |
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117 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_READ_STACK "); |
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118 | |
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119 | // miss if destination address is bad |
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120 | miss = (addr_dest != addr_good); |
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121 | addr_dest = addr_good; |
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122 | |
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123 | #ifdef DEBUG_TEST |
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124 | if (take != 1) |
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125 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad direction.",i,toString(condition).c_str())); |
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126 | #endif |
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127 | |
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128 | break; |
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129 | } |
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130 | } |
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131 | |
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132 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * (after)"); |
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133 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * miss : %d",miss); |
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134 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * take : %d",take); |
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135 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * address_dest : %.8x",addr_dest); |
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136 | |
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137 | internal_BRANCH_COMPLETE_MISS_PREDICTION [i] = miss ; |
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138 | internal_BRANCH_COMPLETE_TAKE [i] = take ; |
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139 | internal_BRANCH_COMPLETE_ADDRESS_DEST [i] = addr_dest; |
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140 | |
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141 | PORT_WRITE(out_BRANCH_COMPLETE_MISS_PREDICTION [i], internal_BRANCH_COMPLETE_MISS_PREDICTION [i]); |
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142 | PORT_WRITE(out_BRANCH_COMPLETE_TAKE [i], internal_BRANCH_COMPLETE_TAKE [i]); |
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143 | PORT_WRITE(out_BRANCH_COMPLETE_ADDRESS_SRC [i], reg_UPDATE_PREDICTION_TABLE [context][depth]._address_src); |
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144 | PORT_WRITE(out_BRANCH_COMPLETE_ADDRESS_DEST [i], internal_BRANCH_COMPLETE_ADDRESS_DEST [i]); |
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145 | } |
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146 | |
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147 | log_end(Update_Prediction_Table,FUNCTION); |
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148 | }; |
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149 | |
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150 | }; // end namespace update_prediction_table |
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151 | }; // end namespace prediction_unit |
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152 | }; // end namespace front_end |
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153 | }; // end namespace multi_front_end |
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154 | }; // end namespace core |
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155 | |
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156 | }; // end namespace behavioural |
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157 | }; // end namespace morpheo |
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158 | #endif |
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