1 | #ifdef VHDL |
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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/Stage_1_Ifetch/Predictor/Meta_Predictor/Two_Level_Branch_Predictor/Two_Level_Branch_Predictor_Glue/include/Two_Level_Branch_Predictor_Glue.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 stage_1_ifetch { |
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14 | namespace predictor { |
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15 | namespace meta_predictor { |
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16 | namespace two_level_branch_predictor { |
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17 | namespace two_level_branch_predictor_glue { |
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18 | |
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19 | |
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20 | void Two_Level_Branch_Predictor_Glue::vhdl_body (Vhdl * & vhdl) |
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21 | { |
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22 | log_printf(FUNC,Two_Level_Branch_Predictor_Glue,"vhdl_body","Begin"); |
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23 | |
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24 | vhdl->set_body ("-- ack output"); |
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25 | for (uint32_t i=0; i<_param._nb_prediction; i++) |
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26 | { |
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27 | string bht_ack, pht_ack; |
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28 | |
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29 | if (_param._have_bht) |
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30 | bht_ack = "in_PREDICT_"+toString(i)+"_BHT_ACK"; |
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31 | else |
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32 | bht_ack = "'1'"; |
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33 | |
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34 | if (_param._have_pht) |
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35 | pht_ack = "in_PREDICT_"+toString(i)+"_PHT_ACK"; |
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36 | else |
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37 | pht_ack = "'1'"; |
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38 | |
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39 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_ACK <= "+bht_ack+" and "+pht_ack+";"); |
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40 | } |
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41 | |
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42 | for (uint32_t i=0; i<_param._nb_branch_complete; i++) |
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43 | { |
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44 | string bht_ack, pht_ack; |
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45 | |
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46 | if (_param._have_bht) |
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47 | bht_ack = "in_BRANCH_COMPLETE_"+toString(i)+"_BHT_ACK"; |
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48 | else |
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49 | bht_ack = "'1'"; |
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50 | |
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51 | if (_param._have_pht) |
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52 | pht_ack = "in_BRANCH_COMPLETE_"+toString(i)+"_PHT_ACK"; |
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53 | else |
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54 | pht_ack = "'1'"; |
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55 | |
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56 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_ACK <= "+bht_ack+" and "+pht_ack+";"); |
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57 | } |
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58 | |
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59 | vhdl->set_body (""); |
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60 | vhdl->set_body ("-- address output"); |
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61 | |
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62 | for (uint32_t i=0; i<_param._nb_prediction; i++) |
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63 | { |
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64 | // The address is higher than the address size of bht |
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65 | if (_param._have_bht) |
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66 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_BHT_ADDRESS <= in_PREDICT_"+toString(i)+"_ADDRESS"+std_logic_range(_param._bht_size_address)+";"); |
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67 | |
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68 | if (_param._have_pht) |
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69 | { |
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70 | // For pht : 2 cases |
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71 | if (_param._have_bht) |
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72 | { |
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73 | uint32_t min = 0; |
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74 | uint32_t max = _param._pht_size_address; |
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75 | |
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76 | // A lot of case : |
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77 | // |
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78 | // pht_size_addr |
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79 | // addr bht_history |
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80 | // |
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81 | // ---------] | |
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82 | // |[--------- |
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83 | // |
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84 | // -----------|----] share |
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85 | // | [------- |
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86 | // |
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87 | // -----------|----] no share |
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88 | // | [----- |
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89 | // |
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90 | |
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91 | // Test if address is share |
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92 | if (_param._pht_size_address_shift > 0) |
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93 | { |
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94 | min = _param._pht_size_address_shift; |
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95 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_PHT_ADDRESS"+std_logic_range(min) + " <= in_PREDICT_"+toString(i)+"_BHT_HISTORY"+std_logic_range(min)+";"); |
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96 | } |
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97 | |
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98 | if (_param._bht_size_history < _param._pht_size_address) |
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99 | { |
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100 | max = _param._bht_size_history; |
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101 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_PHT_ADDRESS"+std_logic_range(_param._pht_size_address-1,max) + " <= in_PREDICT_"+toString(i)+"_ADDRESS"+std_logic_range(_param._pht_size_address-1-_param._pht_size_address_shift, _param._pht_size_address_share)+";"); |
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102 | } |
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103 | |
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104 | // intersection |
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105 | if (_param._pht_size_address_share > 0) |
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106 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_PHT_ADDRESS"+std_logic_range(max-1,min) + " <= in_PREDICT_"+toString(i)+"_ADDRESS"+std_logic_range(_param._pht_size_address_share-1,0)+" xor in_PREDICT_"+toString(i)+"_BHT_HISTORY"+std_logic_range(max-1,min)+";"); |
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107 | } |
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108 | else |
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109 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_PHT_ADDRESS <= in_PREDICT_"+toString(i)+"_ADDRESS"+std_logic_range(_param._pht_size_address)+";"); |
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110 | } |
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111 | } |
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112 | |
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113 | for (uint32_t i=0; i<_param._nb_branch_complete; i++) |
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114 | { |
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115 | // The address is higher than the address size of bht |
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116 | if (_param._have_bht) |
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117 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_BHT_ADDRESS <= in_BRANCH_COMPLETE_"+toString(i)+"_ADDRESS"+std_logic_range(_param._bht_size_address)+";"); |
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118 | |
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119 | if (_param._have_pht) |
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120 | { |
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121 | // For pht : 2 cases |
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122 | if (_param._have_bht) |
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123 | { |
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124 | uint32_t min = 0; |
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125 | uint32_t max = _param._pht_size_address; |
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126 | |
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127 | // Test if address is share |
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128 | if (_param._pht_size_address_shift > 0) |
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129 | { |
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130 | min = _param._pht_size_address_shift; |
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131 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PHT_ADDRESS"+std_logic_range(min) + " <= in_BRANCH_COMPLETE_"+toString(i)+"_BHT_HISTORY"+std_logic_range(min)+";"); |
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132 | } |
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133 | |
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134 | if (_param._bht_size_history < _param._pht_size_address) |
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135 | { |
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136 | max = _param._bht_size_history; |
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137 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PHT_ADDRESS"+std_logic_range(_param._pht_size_address-1,max) + " <= in_BRANCH_COMPLETE_"+toString(i)+"_ADDRESS"+std_logic_range(_param._pht_size_address-1-_param._pht_size_address_shift, _param._pht_size_address_share)+";"); |
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138 | } |
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139 | |
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140 | // intersection |
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141 | if (_param._pht_size_address_share > 0) |
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142 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PHT_ADDRESS"+std_logic_range(max-1,min) + " <= in_BRANCH_COMPLETE_"+toString(i)+"_ADDRESS"+std_logic_range(_param._pht_size_address_share-1,0)+" xor in_BRANCH_COMPLETE_"+toString(i)+"_BHT_HISTORY"+std_logic_range(max-1,min)+";"); |
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143 | } |
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144 | else |
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145 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PHT_ADDRESS <= in_BRANCH_COMPLETE_"+toString(i)+"_ADDRESS"+std_logic_range(_param._pht_size_address)+";"); |
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146 | } |
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147 | } |
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148 | |
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149 | log_printf(FUNC,Two_Level_Branch_Predictor_Glue,"vhdl_body","End"); |
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150 | }; |
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151 | |
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152 | }; // end namespace two_level_branch_predictor_glue |
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153 | }; // end namespace two_level_branch_predictor |
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154 | }; // end namespace meta_predictor |
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155 | }; // end namespace predictor |
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156 | }; // end namespace stage_1_ifetch |
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157 | |
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158 | }; // end namespace behavioural |
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159 | }; // end namespace morpheo |
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160 | #endif |
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