[4] | 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/Meta_Predictor_Glue/include/Meta_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 meta_predictor_glue { |
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| 17 | |
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| 18 | |
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[44] | 19 | void Meta_Predictor_Glue::vhdl_body (Vhdl * & vhdl) |
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[4] | 20 | { |
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| 21 | log_printf(FUNC,Meta_Predictor_Glue,"vhdl_body","Begin"); |
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[44] | 22 | vhdl->set_body (""); |
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| 23 | vhdl->set_body (" -- predict"); |
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[4] | 24 | |
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| 25 | for (uint32_t i=0; i<_param._nb_prediction; i++) |
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| 26 | { |
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[44] | 27 | string meta_predictor_ack = (_param._have_meta_predictor==true)?("in_PREDICT_"+toString(i)+"_PREDICTOR_0_ACK and in_PREDICT_"+toString(i)+"_PREDICTOR_1_ACK"):"'1'"; |
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[4] | 28 | |
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[44] | 29 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_ACK <= "+meta_predictor_ack+" and "+"in_PREDICT_"+toString(i)+"_PREDICTOR_2_ACK;"); |
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[4] | 30 | |
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| 31 | uint32_t index=_param._size_history; |
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| 32 | |
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| 33 | |
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| 34 | if (_param._predictor_2_have_pht) |
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| 35 | { |
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[44] | 36 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_pht_size_counter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_2_PHT_HISTORY;"); |
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[4] | 37 | index-= _param._predictor_2_pht_size_counter; |
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| 38 | } |
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| 39 | if (_param._predictor_2_have_bht) |
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| 40 | { |
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[44] | 41 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_bht_size_shifter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_2_BHT_HISTORY;"); |
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[4] | 42 | index-= _param._predictor_2_bht_size_shifter; |
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| 43 | } |
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| 44 | |
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| 45 | if (_param._have_meta_predictor) |
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| 46 | { |
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| 47 | if (_param._predictor_1_have_pht) |
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| 48 | { |
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[44] | 49 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_pht_size_counter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_1_PHT_HISTORY;"); |
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[4] | 50 | index-= _param._predictor_1_pht_size_counter; |
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| 51 | } |
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| 52 | if (_param._predictor_1_have_bht) |
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| 53 | { |
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[44] | 54 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_bht_size_shifter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_1_BHT_HISTORY;"); |
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[4] | 55 | index-= _param._predictor_1_bht_size_shifter; |
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| 56 | } |
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| 57 | |
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| 58 | if (_param._predictor_0_have_pht) |
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| 59 | { |
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[44] | 60 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_pht_size_counter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_0_PHT_HISTORY;"); |
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[4] | 61 | index-= _param._predictor_0_pht_size_counter; |
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| 62 | } |
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| 63 | if (_param._predictor_0_have_bht) |
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| 64 | { |
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[44] | 65 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_bht_size_shifter)+" <= in_PREDICT_"+toString(i)+"_PREDICTOR_0_BHT_HISTORY;"); |
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[4] | 66 | index-= _param._predictor_0_bht_size_shifter; |
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| 67 | } |
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| 68 | } |
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| 69 | |
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| 70 | // direction of prediction |
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[44] | 71 | vhdl->set_body (""); |
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[4] | 72 | if (_param._have_meta_predictor) |
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[44] | 73 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_DIRECTION <= predict_"+toString(i)+"_predictor_0_direction when predict_"+toString(i)+"_predictor_2_direction='0' else predict_"+toString(i)+"_predictor_1_direction;"); |
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[4] | 74 | else |
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[44] | 75 | vhdl->set_body ("out_PREDICT_"+toString(i)+"_DIRECTION <= predict_"+toString(i)+"_predictor_2_direction;"); |
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[4] | 76 | } |
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| 77 | |
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| 78 | // Interface - branch_complete |
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| 79 | |
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[44] | 80 | vhdl->set_body (""); |
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| 81 | vhdl->set_body (" -- branch_complete"); |
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[4] | 82 | for (uint32_t i=0; i<_param._nb_branch_complete; i++) |
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| 83 | { |
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[5] | 84 | // branch_complete_predictor_2 val and directionn |
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| 85 | if (_param._have_meta_predictor) |
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| 86 | { |
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[44] | 87 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_VAL <= (branch_complete_"+toString(i)+"_predictor_0_direction xor branch_complete_"+toString(i)+"_predictor_1_direction) and "+"in_BRANCH_COMPLETE_"+toString(i)+"_VAL;"); |
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| 88 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_DIRECTION <= (branch_complete_"+toString(i)+"_predictor_0_direction and not in_BRANCH_COMPLETE_"+toString(i)+"_DIRECTION) or (branch_complete_"+toString(i)+"_predictor_1_direction and in_BRANCH_COMPLETE_"+toString(i)+"_DIRECTION);"); |
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[5] | 89 | } |
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| 90 | |
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[44] | 91 | string meta_predictor_ack = (_param._have_meta_predictor==true)?("in_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_0_ACK and in_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_1_ACK"):"'1'"; |
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[4] | 92 | |
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[44] | 93 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_ACK <= "+meta_predictor_ack+" and "+"in_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_ACK;"); |
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[4] | 94 | |
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| 95 | uint32_t index=_param._size_history; |
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| 96 | |
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| 97 | if (_param._predictor_2_have_pht) |
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| 98 | { |
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[44] | 99 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_PHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_pht_size_counter)+";"); |
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[4] | 100 | index-= _param._predictor_2_pht_size_counter; |
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| 101 | } |
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| 102 | if (_param._predictor_2_have_bht) |
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| 103 | { |
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[44] | 104 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_2_BHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_2_bht_size_shifter)+";"); |
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[4] | 105 | index-= _param._predictor_2_bht_size_shifter; |
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| 106 | } |
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| 107 | |
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| 108 | if (_param._have_meta_predictor) |
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| 109 | { |
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| 110 | if (_param._predictor_1_have_pht) |
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| 111 | { |
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[44] | 112 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_1_PHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_pht_size_counter)+";"); |
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[4] | 113 | index-= _param._predictor_1_pht_size_counter; |
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| 114 | } |
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| 115 | if (_param._predictor_1_have_bht) |
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| 116 | { |
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[44] | 117 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_1_BHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_1_bht_size_shifter)+";"); |
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[4] | 118 | index-= _param._predictor_1_bht_size_shifter; |
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| 119 | } |
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| 120 | |
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| 121 | if (_param._predictor_0_have_pht) |
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| 122 | { |
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[44] | 123 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_0_PHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_pht_size_counter)+";"); |
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[4] | 124 | index-= _param._predictor_0_pht_size_counter; |
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| 125 | } |
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| 126 | if (_param._predictor_0_have_bht) |
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| 127 | { |
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[44] | 128 | vhdl->set_body ("out_BRANCH_COMPLETE_"+toString(i)+"_PREDICTOR_0_BHT_HISTORY <= in_BRANCH_COMPLETE_"+toString(i)+"_HISTORY"+std_logic_range(index-1,index-_param._predictor_0_bht_size_shifter)+";"); |
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[4] | 129 | index-= _param._predictor_0_bht_size_shifter; |
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| 130 | } |
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| 131 | } |
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| 132 | } |
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| 133 | |
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| 134 | log_printf(FUNC,Meta_Predictor_Glue,"vhdl_body","End"); |
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| 135 | }; |
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| 136 | |
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| 137 | }; // end namespace meta_predictor_glue |
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| 138 | }; // end namespace meta_predictor |
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| 139 | }; // end namespace predictor |
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| 140 | }; // end namespace stage_1_ifetch |
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| 141 | |
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| 142 | }; // end namespace behavioural |
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| 143 | }; // end namespace morpheo |
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| 144 | #endif |
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