1 | /* |
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2 | * $Id: Parameters.cpp 111 2009-02-27 18:37:40Z rosiere $ |
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3 | * |
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4 | * [ Description ] |
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5 | * |
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6 | */ |
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7 | |
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8 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/include/Parameters.h" |
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9 | |
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10 | namespace morpheo { |
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11 | namespace behavioural { |
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12 | namespace core { |
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13 | namespace multi_front_end { |
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14 | namespace front_end { |
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15 | namespace prediction_unit { |
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16 | namespace direction { |
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17 | |
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18 | |
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19 | #undef FUNCTION |
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20 | #define FUNCTION "Direction::Parameters" |
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21 | Parameters::Parameters (Tpredictor_t predictor_scheme , |
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22 | uint32_t nb_inst_predict , |
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23 | uint32_t nb_inst_update , |
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24 | uint32_t size_address , |
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25 | bool have_bht [3], |
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26 | uint32_t bht_size_shifter [3], |
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27 | uint32_t bht_nb_shifter [3], |
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28 | bool have_pht [3], |
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29 | uint32_t pht_size_counter [3], |
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30 | uint32_t pht_nb_counter [3], |
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31 | uint32_t pht_size_address_share [3], |
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32 | bool is_toplevel) |
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33 | { |
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34 | log_printf(FUNC,Direction,FUNCTION,"Begin"); |
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35 | |
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36 | _predictor_scheme = predictor_scheme ; |
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37 | _nb_inst_predict = nb_inst_predict ; |
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38 | _nb_inst_update = nb_inst_update ; |
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39 | // _size_address = size_address ; |
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40 | |
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41 | for (uint32_t i=0; i<3; i++) |
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42 | { |
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43 | _have_bht [i] = have_bht [i]; |
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44 | _bht_size_shifter [i] = bht_size_shifter [i]; |
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45 | _bht_nb_shifter [i] = bht_nb_shifter [i]; |
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46 | _have_pht [i] = have_pht [i]; |
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47 | _pht_size_counter [i] = pht_size_counter [i]; |
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48 | _pht_nb_counter [i] = pht_nb_counter [i]; |
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49 | _pht_size_address_share [i] = pht_size_address_share [i]; |
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50 | } |
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51 | |
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52 | switch (predictor_scheme) |
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53 | { |
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54 | case PREDICTOR_NEVER_TAKE : |
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55 | case PREDICTOR_ALWAYS_TAKE : |
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56 | case PREDICTOR_STATIC : |
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57 | case PREDICTOR_LAST_TAKE : |
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58 | { |
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59 | _have_component_meta_predictor = false; |
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60 | |
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61 | for (uint32_t i=0; i<3; i++) |
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62 | { |
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63 | _have_bht [i] = false; |
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64 | _have_pht [i] = false; |
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65 | } |
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66 | |
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67 | break; |
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68 | } |
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69 | case PREDICTOR_COUNTER : |
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70 | { |
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71 | _have_bht [0] = false; |
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72 | _have_pht [0] = true ; |
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73 | for (uint32_t i=1; i<3; i++) |
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74 | { |
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75 | _have_bht [i] = false; |
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76 | _have_pht [i] = false; |
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77 | } |
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78 | |
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79 | _have_component_meta_predictor = true; |
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80 | break; |
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81 | } |
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82 | case PREDICTOR_LOCAL : |
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83 | { |
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84 | _have_bht [0] = true; |
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85 | _have_pht [0] = true; |
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86 | _bht_nb_shifter [0] = (_bht_nb_shifter [0]<2)?2:_bht_nb_shifter [0]; // min : 2 |
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87 | for (uint32_t i=1; i<3; i++) |
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88 | { |
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89 | _have_bht [i] = false; |
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90 | _have_pht [i] = false; |
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91 | } |
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92 | |
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93 | _have_component_meta_predictor = true; |
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94 | break; |
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95 | } |
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96 | case PREDICTOR_GLOBAL : |
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97 | { |
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98 | |
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99 | _have_bht [0] = true; |
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100 | _have_pht [0] = true; |
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101 | _bht_nb_shifter [0] = 1; // one global shifter |
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102 | for (uint32_t i=1; i<3; i++) |
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103 | { |
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104 | _have_bht [i] = false; |
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105 | _have_pht [i] = false; |
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106 | } |
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107 | |
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108 | _have_component_meta_predictor = true; |
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109 | break; |
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110 | } |
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111 | case PREDICTOR_META : |
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112 | { |
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113 | // predictor_0 = global |
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114 | // predictor_1 = local |
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115 | // predictor_2 = counter : select between predictor_0 and predictor_1 |
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116 | _have_bht [0] = true; |
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117 | _have_pht [0] = true; |
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118 | _bht_nb_shifter [0] = (_bht_nb_shifter [0]<2)?2:_bht_nb_shifter [0]; // min : 2 |
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119 | _have_bht [1] = true; |
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120 | _have_pht [1] = true; |
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121 | _bht_nb_shifter [1] = 1; // one global shifter |
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122 | _have_bht [2] = false; |
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123 | _have_pht [2] = true; |
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124 | |
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125 | _have_component_meta_predictor = true; |
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126 | break; |
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127 | } |
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128 | case PREDICTOR_CUSTOM : |
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129 | { |
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130 | // keep user define |
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131 | _have_component_meta_predictor = true; |
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132 | break; |
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133 | } |
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134 | } |
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135 | |
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136 | test(); |
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137 | |
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138 | if (_have_component_meta_predictor) |
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139 | _param_meta_predictor = new morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::direction::meta_predictor::Parameters |
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140 | ( |
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141 | _nb_inst_predict , |
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142 | _nb_inst_update , |
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143 | size_address , |
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144 | _have_bht , |
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145 | _bht_size_shifter , |
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146 | _bht_nb_shifter , |
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147 | _have_pht , |
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148 | _pht_size_counter , |
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149 | _pht_nb_counter , |
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150 | _pht_size_address_share |
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151 | ); |
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152 | |
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153 | _size_history = (_have_component_meta_predictor)?_param_meta_predictor->_size_history:0; |
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154 | |
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155 | log_printf(TRACE,Direction,FUNCTION," * size_history : %d",_size_history); |
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156 | |
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157 | // _size_history = 0; |
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158 | // for (uint32_t i=0; i<3; i++) |
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159 | // _size_history += (((_have_bht [i])?_bht_size_shifter [i]:0) + |
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160 | // ((_have_pht [i])?_pht_size_counter [i]:0)); |
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161 | |
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162 | _have_port_history = (_size_history > 0); |
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163 | |
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164 | _param_glue = new morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::direction::direction_glue::Parameters |
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165 | (_predictor_scheme, |
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166 | _nb_inst_predict , |
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167 | _nb_inst_update , |
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168 | size_address , |
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169 | _size_history ); |
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170 | |
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171 | if (is_toplevel) |
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172 | { |
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173 | _size_instruction_address = size_address; |
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174 | |
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175 | copy (); |
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176 | } |
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177 | |
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178 | log_printf(FUNC,Direction,FUNCTION,"End"); |
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179 | }; |
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180 | |
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181 | // #undef FUNCTION |
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182 | // #define FUNCTION "Direction::Parameters (copy)" |
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183 | // Parameters::Parameters (Parameters & param) |
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184 | // { |
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185 | // log_printf(FUNC,Direction,FUNCTION,"Begin"); |
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186 | // test(); |
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187 | // log_printf(FUNC,Direction,FUNCTION,"End"); |
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188 | // }; |
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189 | |
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190 | #undef FUNCTION |
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191 | #define FUNCTION "Direction::~Parameters" |
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192 | Parameters::~Parameters () |
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193 | { |
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194 | log_printf(FUNC,Direction,FUNCTION,"Begin"); |
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195 | |
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196 | delete _param_glue; |
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197 | if (_have_component_meta_predictor) |
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198 | delete _param_meta_predictor; |
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199 | |
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200 | log_printf(FUNC,Direction,FUNCTION,"End"); |
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201 | }; |
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202 | |
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203 | #undef FUNCTION |
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204 | #define FUNCTION "Direction::copy" |
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205 | void Parameters::copy (void) |
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206 | { |
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207 | log_printf(FUNC,Direction,FUNCTION,"Begin"); |
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208 | |
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209 | COPY(_param_glue); |
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210 | |
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211 | log_printf(FUNC,Direction,FUNCTION,"End"); |
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212 | }; |
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213 | |
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214 | }; // end namespace direction |
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215 | }; // end namespace prediction_unit |
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216 | }; // end namespace front_end |
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217 | }; // end namespace multi_front_end |
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218 | }; // end namespace core |
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219 | |
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220 | }; // end namespace behavioural |
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221 | }; // end namespace morpheo |
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