[78] | 1 | #ifdef SYSTEMC |
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| 2 | /* |
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| 3 | * $Id: Branch_Target_Buffer_Register_genMealy_update.cpp 88 2008-12-10 18:31:39Z rosiere $ |
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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/Branch_Target_Buffer/Branch_Target_Buffer_Register/include/Branch_Target_Buffer_Register.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 branch_target_buffer { |
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| 18 | namespace branch_target_buffer_register { |
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| 19 | |
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| 20 | #undef FUNCTION |
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| 21 | #define FUNCTION "Branch_Target_Buffer_Register::genMealy_update" |
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| 22 | void Branch_Target_Buffer_Register::genMealy_update (void) |
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| 23 | { |
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[88] | 24 | log_begin(Branch_Target_Buffer_Register,FUNCTION); |
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| 25 | log_function(Branch_Target_Buffer_Register,FUNCTION,_name.c_str()); |
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[78] | 26 | |
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| 27 | for (uint32_t i=0; i<_param->_nb_inst_update; i++) |
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| 28 | { |
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| 29 | Tcontext_t context = (_param->_have_port_context_id)?PORT_READ(in_UPDATE_CONTEXT_ID [i]):0; |
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| 30 | Tgeneral_data_t address = PORT_READ(in_UPDATE_ADDRESS_SRC [i]); |
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| 31 | |
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| 32 | Tcontrol_t hit = false; |
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| 33 | uint32_t num_bank = (address>>_param->_shift_bank)&_param->_mask_bank; |
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| 34 | uint32_t num_entry = 0; |
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| 35 | |
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| 36 | if (PORT_READ(in_UPDATE_VAL [i])) |
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| 37 | for (;num_entry < _param->_associativity; num_entry ++) |
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| 38 | { |
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| 39 | hit = ((reg_BTB[num_bank][num_entry]._val == 1 ) and |
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| 40 | (reg_BTB[num_bank][num_entry]._context == context) and |
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| 41 | (reg_BTB[num_bank][num_entry]._address_src == address)); |
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| 42 | |
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| 43 | if (hit) |
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| 44 | break; |
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| 45 | } |
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| 46 | |
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| 47 | internal_UPDATE_HIT [i] = hit ; |
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| 48 | internal_UPDATE_NUM_BANK [i] = num_bank ; |
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| 49 | internal_UPDATE_NUM_ENTRY [i] = num_entry; |
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| 50 | |
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[82] | 51 | if (_param->_have_port_victim) |
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| 52 | { |
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[78] | 53 | PORT_WRITE(out_UPDATE_HIT [i], hit); |
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| 54 | PORT_WRITE(out_UPDATE_HIT_INDEX [i], num_entry); |
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[82] | 55 | } |
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[78] | 56 | } |
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| 57 | |
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[88] | 58 | log_end(Branch_Target_Buffer_Register,FUNCTION); |
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[78] | 59 | }; |
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| 60 | |
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| 61 | }; // end namespace branch_target_buffer_register |
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| 62 | }; // end namespace branch_target_buffer |
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| 63 | }; // end namespace prediction_unit |
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| 64 | }; // end namespace front_end |
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| 65 | }; // end namespace multi_front_end |
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| 66 | }; // end namespace core |
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| 67 | |
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| 68 | }; // end namespace behavioural |
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| 69 | }; // end namespace morpheo |
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| 70 | #endif |
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