| 1 | /* |
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| 2 | * $Id: Parameters.cpp 88 2008-12-10 18:31:39Z 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/Branch_Target_Buffer/Branch_Target_Buffer_Register/include/Parameters.h" |
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| 9 | #include "Common/include/BitManipulation.h" |
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| 10 | #include "Common/include/Max.h" |
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| 11 | |
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| 12 | namespace morpheo { |
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| 13 | namespace behavioural { |
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| 14 | namespace core { |
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| 15 | namespace multi_front_end { |
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| 16 | namespace front_end { |
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| 17 | namespace prediction_unit { |
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| 18 | namespace branch_target_buffer { |
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| 19 | namespace branch_target_buffer_register { |
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| 20 | |
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| 21 | |
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| 22 | #undef FUNCTION |
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| 23 | #define FUNCTION "Branch_Target_Buffer_Register::Parameters" |
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| 24 | Parameters::Parameters (uint32_t nb_context , |
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| 25 | uint32_t * nb_instruction , |
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| 26 | uint32_t size_buffer , |
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| 27 | uint32_t associativity , |
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| 28 | uint32_t size_address , |
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| 29 | uint32_t size_counter , |
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| 30 | uint32_t nb_inst_predict, |
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| 31 | uint32_t nb_inst_decod , |
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| 32 | uint32_t nb_inst_update , |
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| 33 | bool is_toplevel) |
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| 34 | { |
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| 35 | log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"Begin"); |
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| 36 | |
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| 37 | _nb_context = nb_context ; |
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| 38 | _nb_instruction = nb_instruction ; |
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| 39 | _size_buffer = size_buffer ; |
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| 40 | _associativity = associativity ; |
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| 41 | _size_counter = size_counter ; |
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| 42 | _nb_inst_predict = nb_inst_predict; |
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| 43 | _nb_inst_decod = nb_inst_decod ; |
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| 44 | _nb_inst_update = nb_inst_update ; |
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| 45 | |
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| 46 | _size_bank = size_buffer/associativity; |
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| 47 | _size_victim = log2(associativity); |
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| 48 | |
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| 49 | _have_port_victim = (_size_victim > 0); |
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| 50 | |
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| 51 | _accurate_max = (1<<_size_counter); |
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| 52 | _accurate_limit = (_accurate_max*PERCENT_ACCURATE_LIMIT)/100; |
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| 53 | _first_accurate_if_hit = (1<<(_size_counter-1)); //b1000 |
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| 54 | _first_accurate_if_miss = _first_accurate_if_hit-1; //b0111 |
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| 55 | |
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| 56 | uint32_t max_inst = max<uint32_t>(nb_instruction, nb_context); |
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| 57 | uint32_t size_offset = log2(max_inst); |
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| 58 | uint32_t size_bank = log2(_size_bank); |
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| 59 | |
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| 60 | _mask_offset = gen_mask<Tgeneral_data_t> (size_offset); |
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| 61 | _mask_bank = gen_mask<Tgeneral_data_t> (size_bank ); |
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| 62 | _shift_offset = 2; |
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| 63 | _shift_bank = _shift_offset+size_offset; |
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| 64 | _shift_tag = _shift_bank +size_bank ; |
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| 65 | |
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| 66 | // std::cout << "max_inst : " << toString(max_inst ) << std::endl; |
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| 67 | // std::cout << "size_offset : " << toString(size_offset) << std::endl; |
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| 68 | // std::cout << "size_bank : " << toString(size_bank ) << std::endl; |
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| 69 | // std::cout << "mask_offset : " << toString(_mask_offset ) << std::endl; |
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| 70 | // std::cout << "mask_bank : " << toString(_mask_bank ) << std::endl; |
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| 71 | // std::cout << "shift_offset : " << toString(_shift_offset) << std::endl; |
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| 72 | // std::cout << "shift_bank : " << toString(_shift_bank ) << std::endl; |
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| 73 | // std::cout << "shift_tag : " << toString(_shift_tag ) << std::endl; |
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| 74 | // std::cout << "accurate_max : " << toString(_accurate_max ) << std::endl; |
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| 75 | // std::cout << "first_accurate_if_hit : " << toString(_first_accurate_if_hit ) << std::endl; |
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| 76 | // std::cout << "first_accurate_if_miss : " << toString(_first_accurate_if_miss) << std::endl; |
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| 77 | // std::cout << "accurate_limit : " << toString(_accurate_limit ) << std::endl; |
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| 78 | |
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| 79 | test(); |
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| 80 | |
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| 81 | if (is_toplevel) |
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| 82 | { |
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| 83 | _size_instruction_address = size_address ; |
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| 84 | _size_context_id = log2(nb_context); |
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| 85 | _have_port_context_id = (_size_context_id > 0); |
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| 86 | |
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| 87 | copy (); |
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| 88 | } |
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| 89 | |
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| 90 | log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"End"); |
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| 91 | }; |
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| 92 | |
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| 93 | // #undef FUNCTION |
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| 94 | // #define FUNCTION "Branch_Target_Buffer_Register::Parameters (copy)" |
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| 95 | // Parameters::Parameters (Parameters & param) |
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| 96 | // { |
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| 97 | // log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"Begin"); |
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| 98 | // test(); |
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| 99 | // log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"End"); |
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| 100 | // }; |
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| 101 | |
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| 102 | #undef FUNCTION |
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| 103 | #define FUNCTION "Branch_Target_Buffer_Register::~Parameters" |
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| 104 | Parameters::~Parameters () |
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| 105 | { |
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| 106 | log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"Begin"); |
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| 107 | log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"End"); |
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| 108 | }; |
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| 109 | |
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| 110 | #undef FUNCTION |
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| 111 | #define FUNCTION "Branch_Target_Buffer_Register::copy" |
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| 112 | void Parameters::copy () |
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| 113 | { |
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| 114 | log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"Begin"); |
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| 115 | log_printf(FUNC,Branch_Target_Buffer_Register,FUNCTION,"End"); |
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| 116 | }; |
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| 117 | |
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| 118 | }; // end namespace branch_target_buffer_register |
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| 119 | }; // end namespace branch_target_buffer |
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| 120 | }; // end namespace prediction_unit |
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| 121 | }; // end namespace front_end |
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| 122 | }; // end namespace multi_front_end |
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| 123 | }; // end namespace core |
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| 124 | |
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| 125 | }; // end namespace behavioural |
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| 126 | }; // end namespace morpheo |
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