[88] | 1 | #ifdef SYSTEMC |
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| 2 | /* |
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| 3 | * $Id: Commit_unit_genMoore.cpp 139 2010-07-30 14:47:27Z 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_OOO_Engine/OOO_Engine/Commit_unit/include/Commit_unit.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_ooo_engine { |
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| 15 | namespace ooo_engine { |
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| 16 | namespace commit_unit { |
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| 17 | |
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| 18 | |
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| 19 | #undef FUNCTION |
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| 20 | #define FUNCTION "Commit_unit::genMoore" |
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| 21 | void Commit_unit::genMoore (void) |
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| 22 | { |
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| 23 | log_begin(Commit_unit,FUNCTION); |
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| 24 | log_function(Commit_unit,FUNCTION,_name.c_str()); |
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| 25 | |
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[123] | 26 | if (PORT_READ(in_NRESET)) |
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| 27 | { |
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[88] | 28 | // =================================================================== |
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| 29 | // =====[ REEXECUTE ]================================================= |
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| 30 | // =================================================================== |
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| 31 | { |
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[129] | 32 | uint32_t num_scan_bank = 0; // last scan bank |
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[122] | 33 | bool can_continue = true; |
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[118] | 34 | |
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[124] | 35 | uint32_t event_nb_inst [_param->_nb_front_end][_param->_max_nb_context]; |
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| 36 | for (uint32_t i=0; i<_param->_nb_front_end; i++) |
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| 37 | for (uint32_t j=0; j<_param->_nb_context [i]; j++) |
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| 38 | event_nb_inst [i][j] = 0; |
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| 39 | |
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[122] | 40 | // for each reexecute_port |
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| 41 | for (uint32_t i=0; i<_param->_nb_inst_reexecute; ++i) |
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| 42 | { |
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| 43 | log_printf(TRACE,Commit_unit,FUNCTION," * REEXECUTE [%d]",i); |
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| 44 | |
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| 45 | // Store instruction comming Out Of Order in Load Store Unit. |
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| 46 | // Must be executed in no speculative mode. Also, send a signal when an Store is in head of ROB |
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| 47 | |
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| 48 | Tcontrol_t val = false; |
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[100] | 49 | |
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[129] | 50 | for (uint32_t j=num_scan_bank; j<_param->_nb_bank; j++) |
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[122] | 51 | { |
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[129] | 52 | num_scan_bank ++; |
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[122] | 53 | |
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| 54 | // translate bank number |
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| 55 | uint32_t num_bank = (reg_NUM_BANK_HEAD+j)%_param->_nb_bank; |
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| 56 | |
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| 57 | log_printf(TRACE,Commit_unit,FUNCTION," * num_bank : %d",num_bank); |
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[88] | 58 | |
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[122] | 59 | // Test if the head of rob is not empty |
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| 60 | if (not _rob[num_bank].empty()) |
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| 61 | { |
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| 62 | log_printf(TRACE,Commit_unit,FUNCTION," * ROB is not empty"); |
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| 63 | |
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| 64 | // Read state |
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| 65 | entry_t * entry = _rob [num_bank].front(); |
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[124] | 66 | uint32_t num_packet = ((entry->ptr << _param->_shift_num_slot) | num_bank); |
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| 67 | Tcontext_t front_end_id = entry->front_end_id; |
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| 68 | Tcontext_t context_id = entry->context_id ; |
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| 69 | |
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[122] | 70 | rob_state_t state = entry->state; |
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| 71 | |
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| 72 | // Test state |
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| 73 | // * store is ko, send signal at store_queue |
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| 74 | // * store_is ok, test if in head |
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| 75 | // val = (((state == ROB_STORE_OK) and (num_bank == (reg_NUM_BANK_HEAD))) or |
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| 76 | // (state == ROB_STORE_KO) or |
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| 77 | // (state == ROB_STORE_EVENT) |
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| 78 | // ); |
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| 79 | val = (((state == ROB_STORE_OK) and can_continue) or |
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| 80 | (state == ROB_STORE_KO) or |
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| 81 | (state == ROB_STORE_EVENT) |
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| 82 | ); |
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| 83 | |
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[129] | 84 | event_nb_inst [front_end_id][context_id] ++; |
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| 85 | |
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[124] | 86 | can_continue &= (((state == ROB_STORE_OK ) or |
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| 87 | (state == ROB_STORE_OK_WAIT_END ) or |
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| 88 | (state == ROB_END_OK_SPECULATIVE) or |
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| 89 | (state == ROB_END_OK ) or |
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| 90 | (state == ROB_END )) and |
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| 91 | not ((reg_EVENT_STATE [front_end_id][context_id] == COMMIT_EVENT_STATE_NOT_YET_EVENT) and |
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| 92 | (reg_EVENT_PACKET[front_end_id][context_id] == num_packet)) and |
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| 93 | not ((reg_EVENT_NB_INST [front_end_id][context_id] > 0) and |
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[129] | 94 | ((event_nb_inst [front_end_id][context_id]) >= reg_EVENT_NB_INST [front_end_id][context_id])) |
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[122] | 95 | ); |
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[118] | 96 | |
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[122] | 97 | log_printf(TRACE,Commit_unit,FUNCTION," * val : %d",val); |
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[88] | 98 | |
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[122] | 99 | if (val) |
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| 100 | { |
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| 101 | internal_REEXECUTE_NUM_BANK [i] = num_bank; |
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[118] | 102 | |
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[122] | 103 | Tpacket_t packet_id = ((entry->ptr << _param->_shift_num_slot) | num_bank); |
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| 104 | |
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| 105 | log_printf(TRACE,Commit_unit,FUNCTION," * packet_id : %d",packet_id); |
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| 106 | |
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| 107 | // Reexecute store |
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| 108 | if (_param->_have_port_context_id) |
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| 109 | PORT_WRITE(out_REEXECUTE_CONTEXT_ID [i], entry->context_id ); |
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| 110 | if (_param->_have_port_front_end_id) |
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| 111 | PORT_WRITE(out_REEXECUTE_FRONT_END_ID [i], entry->front_end_id ); |
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| 112 | if (_param->_have_port_rob_ptr ) |
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| 113 | PORT_WRITE(out_REEXECUTE_PACKET_ID [i], packet_id ); |
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| 114 | PORT_WRITE(out_REEXECUTE_TYPE [i], entry->type ); |
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| 115 | PORT_WRITE(out_REEXECUTE_STORE_QUEUE_PTR_WRITE [i], entry->store_queue_ptr_write); |
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| 116 | PORT_WRITE(out_REEXECUTE_OPERATION [i], (state == ROB_STORE_OK)?OPERATION_MEMORY_STORE_HEAD_OK:OPERATION_MEMORY_STORE_HEAD_KO); |
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[118] | 117 | |
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[122] | 118 | break; // Stop scan |
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| 119 | } |
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| 120 | } |
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| 121 | } |
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| 122 | |
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| 123 | internal_REEXECUTE_VAL [i] = val; |
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[88] | 124 | } |
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| 125 | } |
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| 126 | |
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| 127 | // =================================================================== |
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| 128 | // =====[ BRANCH_COMPLETE ]=========================================== |
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| 129 | // =================================================================== |
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| 130 | { |
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[100] | 131 | // Branchement must be send at the prediction unit |
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[88] | 132 | |
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[129] | 133 | uint32_t num_scan_bank = 0; // last scan bank |
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[122] | 134 | |
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[100] | 135 | // for each port, find a valid branchement. |
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[88] | 136 | for (uint32_t i=0; i<_param->_nb_inst_branch_complete; i++) |
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| 137 | { |
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[122] | 138 | log_printf(TRACE,Commit_unit,FUNCTION," * BRANCH_COMPLETE [%d]",i); |
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| 139 | |
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[88] | 140 | Tcontrol_t val = false; |
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| 141 | |
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[129] | 142 | for (uint32_t j=num_scan_bank; j<_param->_nb_bank; j++) |
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[88] | 143 | { |
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[129] | 144 | num_scan_bank ++; |
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[88] | 145 | |
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[100] | 146 | // translate bank number |
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[88] | 147 | uint32_t num_bank = (reg_NUM_BANK_HEAD+j)%_param->_nb_bank; |
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[122] | 148 | |
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| 149 | log_printf(TRACE,Commit_unit,FUNCTION," * num_bank : %d",num_bank); |
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[88] | 150 | |
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[122] | 151 | // Test if in this bank, they have an instruction |
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[88] | 152 | if (not _rob [num_bank].empty()) |
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| 153 | { |
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[122] | 154 | log_printf(TRACE,Commit_unit,FUNCTION," * not empty"); |
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| 155 | |
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| 156 | // Read information |
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[88] | 157 | entry_t * entry = _rob [num_bank].front(); |
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| 158 | rob_state_t state = entry->state; |
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[122] | 159 | Tcontext_t front_end_id = entry->front_end_id; |
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| 160 | Tcontext_t context_id = entry->context_id ; |
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| 161 | |
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| 162 | log_printf(TRACE,Commit_unit,FUNCTION," * front_end_id : %d",front_end_id); |
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| 163 | log_printf(TRACE,Commit_unit,FUNCTION," * context_id : %d",context_id ); |
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| 164 | |
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| 165 | // don't complete a branch when rob manage an present event |
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[123] | 166 | if (((reg_EVENT_STATE [front_end_id][context_id] == COMMIT_EVENT_STATE_NO_EVENT) or |
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| 167 | (reg_EVENT_STATE [front_end_id][context_id] == COMMIT_EVENT_STATE_NOT_YET_EVENT)) and |
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[122] | 168 | (state == ROB_BRANCH_COMPLETE)) |
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[88] | 169 | { |
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[122] | 170 | log_printf(TRACE,Commit_unit,FUNCTION," * find !!!"); |
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| 171 | |
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| 172 | // test if have a future event (stop is set) |
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[123] | 173 | // log_printf(TRACE,Commit_unit,FUNCTION," * reg_EVENT_STOP : %d",reg_EVENT_STOP [front_end_id][context_id]); |
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[122] | 174 | |
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[123] | 175 | if (reg_EVENT_STATE [front_end_id][context_id] == COMMIT_EVENT_STATE_NOT_YET_EVENT) |
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[122] | 176 | { |
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| 177 | // Have future event, can complete the branch if the event is most speculative than this branchement |
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| 178 | // Also, need compare packet_id (is order) |
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| 179 | |
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| 180 | uint32_t _top = ((_rob[reg_NUM_BANK_HEAD].front()->ptr << _param->_shift_num_slot) | reg_NUM_BANK_HEAD); |
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| 181 | uint32_t _old = reg_EVENT_PACKET [front_end_id][context_id]; |
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| 182 | uint32_t _new = ((entry->ptr << _param->_shift_num_slot) | num_bank); |
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| 183 | |
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| 184 | // log_printf(TRACE,Commit_unit,FUNCTION," * _top : %d",_top); |
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| 185 | // log_printf(TRACE,Commit_unit,FUNCTION," * _old (before) : %d",_old); |
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| 186 | // log_printf(TRACE,Commit_unit,FUNCTION," * _new (before) : %d",_new); |
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| 187 | |
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| 188 | if (_old < _top) _old = _old+_param->_size_queue; |
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| 189 | if (_new < _top) _new = _new+_param->_size_queue; |
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| 190 | if (_new < _old) val = true; |
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| 191 | |
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| 192 | // log_printf(TRACE,Commit_unit,FUNCTION," * _old (after ) : %d",_old); |
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| 193 | // log_printf(TRACE,Commit_unit,FUNCTION," * _new (after ) : %d",_new); |
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| 194 | |
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| 195 | } |
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| 196 | else |
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| 197 | val = true; |
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[88] | 198 | |
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[122] | 199 | log_printf(TRACE,Commit_unit,FUNCTION," * val : %d",val); |
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| 200 | |
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| 201 | if (val) |
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| 202 | { |
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| 203 | // Have an valid branchement to complete |
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[88] | 204 | internal_BRANCH_COMPLETE_NUM_BANK [i] = num_bank; |
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| 205 | |
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[122] | 206 | if (_param->_have_port_front_end_id) |
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| 207 | PORT_WRITE(out_BRANCH_COMPLETE_FRONT_END_ID [i], front_end_id ); |
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[88] | 208 | if (_param->_have_port_context_id) |
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[122] | 209 | PORT_WRITE(out_BRANCH_COMPLETE_CONTEXT_ID [i], context_id ); |
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[88] | 210 | if (_param->_have_port_depth) |
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[98] | 211 | PORT_WRITE(out_BRANCH_COMPLETE_DEPTH [i], entry->depth ); |
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[105] | 212 | PORT_WRITE(out_BRANCH_COMPLETE_ADDRESS [i], entry->address_next ); |
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[98] | 213 | // PORT_WRITE(out_BRANCH_COMPLETE_FLAG [i],(entry->flags&FLAG_F)!=0); |
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| 214 | PORT_WRITE(out_BRANCH_COMPLETE_NO_SEQUENCE [i], entry->no_sequence ); |
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[88] | 215 | |
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[122] | 216 | break; // Stop scan |
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| 217 | } |
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[88] | 218 | } |
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| 219 | } |
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| 220 | } |
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| 221 | |
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| 222 | internal_BRANCH_COMPLETE_VAL [i] = val; |
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| 223 | } |
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| 224 | } |
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| 225 | |
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| 226 | // =================================================================== |
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| 227 | // =====[ UPDATE ]==================================================== |
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| 228 | // =================================================================== |
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| 229 | { |
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[105] | 230 | internal_UPDATE_VAL = 0; |
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| 231 | internal_UPDATE_NUM_BANK = reg_NUM_BANK_HEAD; |
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[88] | 232 | |
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[122] | 233 | // Test if have an instruction |
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[105] | 234 | if (not _rob[internal_UPDATE_NUM_BANK].empty()) |
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[88] | 235 | { |
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[105] | 236 | log_printf(TRACE,Commit_unit,FUNCTION," * UPDATE"); |
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| 237 | log_printf(TRACE,Commit_unit,FUNCTION," * num_bank : %d",internal_UPDATE_NUM_BANK); |
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[88] | 238 | |
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[105] | 239 | entry_t * entry = _rob [internal_UPDATE_NUM_BANK].front(); |
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| 240 | |
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[122] | 241 | // Test state |
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| 242 | // Update if exception or load miss |
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[105] | 243 | switch (entry->state) |
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| 244 | { |
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| 245 | case ROB_END_EXCEPTION_UPDATE : |
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| 246 | { |
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| 247 | internal_UPDATE_VAL = 1; |
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| 248 | throw ERRORMORPHEO(FUNCTION,_("Moore : exception is not yet supported (Coming Soon).\n")); |
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| 249 | break; |
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| 250 | } |
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| 251 | case ROB_END_LOAD_MISS_UPDATE : |
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| 252 | { |
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| 253 | log_printf(TRACE,Commit_unit,FUNCTION," * ROB_END_LOAD_MISS_UPDATE"); |
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| 254 | |
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| 255 | internal_UPDATE_VAL = 1; |
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| 256 | |
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| 257 | Tcontext_t front_end_id = entry->front_end_id; |
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| 258 | Tcontext_t context_id = entry->context_id ; |
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| 259 | |
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| 260 | log_printf(TRACE,Commit_unit,FUNCTION," * front_end_id : %d",front_end_id); |
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| 261 | log_printf(TRACE,Commit_unit,FUNCTION," * context_id : %d",context_id ); |
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| 262 | |
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| 263 | if (_param->_have_port_front_end_id) |
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| 264 | PORT_WRITE(out_UPDATE_FRONT_END_ID ,front_end_id); |
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| 265 | if (_param->_have_port_context_id) |
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| 266 | PORT_WRITE(out_UPDATE_CONTEXT_ID ,context_id ); |
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| 267 | if (_param->_have_port_depth) |
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| 268 | PORT_WRITE(out_UPDATE_DEPTH ,entry->depth); |
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| 269 | PORT_WRITE(out_UPDATE_TYPE ,EVENT_TYPE_LOAD_MISS_SPECULATION); |
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| 270 | // PORT_WRITE(out_UPDATE_IS_DELAY_SLOT ,reg_PC_CURRENT_IS_DS [front_end_id][context_id]); |
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| 271 | // PORT_WRITE(out_UPDATE_ADDRESS ,reg_PC_CURRENT [front_end_id][context_id]); |
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| 272 | // PORT_WRITE(out_UPDATE_ADDRESS_EPCR_VAL,reg_PC_CURRENT_IS_DS_TAKE [front_end_id][context_id]); |
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| 273 | // PORT_WRITE(out_UPDATE_ADDRESS_EPCR ,reg_PC_NEXT [front_end_id][context_id]); |
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| 274 | // PORT_WRITE(out_UPDATE_ADDRESS_EEAR_VAL,0); |
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| 275 | // // PORT_WRITE(out_UPDATE_ADDRESS_EEAR ,); |
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| 276 | |
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| 277 | PORT_WRITE(out_UPDATE_IS_DELAY_SLOT ,0); |
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| 278 | PORT_WRITE(out_UPDATE_ADDRESS ,reg_PC_NEXT [front_end_id][context_id]); |
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| 279 | PORT_WRITE(out_UPDATE_ADDRESS_EPCR_VAL,0); |
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| 280 | // PORT_WRITE(out_UPDATE_ADDRESS_EPCR ,); |
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| 281 | PORT_WRITE(out_UPDATE_ADDRESS_EEAR_VAL,0); |
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| 282 | // PORT_WRITE(out_UPDATE_ADDRESS_EEAR ,); |
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| 283 | |
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| 284 | break; |
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| 285 | } |
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| 286 | default : |
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| 287 | { |
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| 288 | // internal_UPDATE_VAL = 0; |
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| 289 | } |
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| 290 | } |
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[88] | 291 | } |
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[105] | 292 | |
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| 293 | log_printf(TRACE,Commit_unit,FUNCTION," * UPDATE (end)"); |
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[88] | 294 | } |
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| 295 | |
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| 296 | // =================================================================== |
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| 297 | // =====[ NB_INST ]=================================================== |
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| 298 | // =================================================================== |
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[123] | 299 | { |
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| 300 | #ifdef DEBUG_TEST |
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| 301 | bool empty = true; |
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| 302 | #endif |
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| 303 | for (uint32_t i=0; i<_param->_nb_front_end; i++) |
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| 304 | for (uint32_t j=0; j<_param->_nb_context [i]; j++) |
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| 305 | { |
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| 306 | #ifdef DEBUG_TEST |
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| 307 | empty &= (reg_NB_INST_COMMIT_ALL [i][j] == 0); |
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| 308 | #endif |
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| 309 | PORT_WRITE(out_NB_INST_COMMIT_ALL [i][j], reg_NB_INST_COMMIT_ALL [i][j]); |
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| 310 | PORT_WRITE(out_NB_INST_COMMIT_MEM [i][j], reg_NB_INST_COMMIT_MEM [i][j]); |
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| 311 | } |
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| 312 | #ifdef DEBUG_TEST |
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| 313 | PORT_WRITE(out_INFO_ROB_EMPTY,empty); |
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| 314 | #endif |
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| 315 | } |
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[88] | 316 | |
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[123] | 317 | |
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[104] | 318 | // =================================================================== |
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| 319 | // =====[ RETIRE_EVENT ]============================================== |
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| 320 | // =================================================================== |
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| 321 | for (uint32_t i=0; i<_param->_nb_front_end; i++) |
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| 322 | for (uint32_t j=0; j<_param->_nb_context [i]; j++) |
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[122] | 323 | { |
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[123] | 324 | // bool flush = (((reg_EVENT_STATE [i][j] == COMMIT_EVENT_STATE_EVENT) or |
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| 325 | // (reg_EVENT_STATE [i][j] == COMMIT_EVENT_STATE_WAIT_DECOD)) and |
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| 326 | // not reg_EVENT_CAN_RESTART[i][j]); |
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[88] | 327 | |
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[122] | 328 | PORT_WRITE(out_RETIRE_EVENT_STATE [i][j], commit_event_state_to_event_state(reg_EVENT_STATE[i][j])); |
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[123] | 329 | // PORT_WRITE(out_RETIRE_EVENT_FLUSH [i][j], flush); |
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| 330 | // PORT_WRITE(out_RETIRE_EVENT_STOP [i][j], reg_EVENT_STOP [i][j]); |
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| 331 | PORT_WRITE(out_RETIRE_EVENT_STOP [i][j], ((reg_EVENT_STATE [i][j] == COMMIT_EVENT_STATE_NOT_YET_EVENT) or |
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| 332 | reg_EVENT_NEXT_STOP [i][j])); |
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[139] | 333 | if (_param->_rat_scheme[i] == RAT_DEPTH_SAVE) |
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| 334 | { |
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| 335 | PORT_WRITE(out_RETIRE_EVENT_TYPE [i][j], reg_EVENT_TYPE [i][j]); |
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| 336 | if (_param->_have_port_depth) |
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| 337 | PORT_WRITE(out_RETIRE_EVENT_DEPTH [i][j], reg_EVENT_DEPTH [i][j]); |
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| 338 | } |
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[122] | 339 | } |
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[123] | 340 | } |
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| 341 | else |
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| 342 | { |
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| 343 | for (uint32_t i=0; i<_param->_nb_inst_reexecute; ++i) |
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| 344 | { |
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| 345 | internal_REEXECUTE_VAL [i] = 0; |
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| 346 | // internal_REEXECUTE_NUM_BANK [i] = num_bank; |
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| 347 | } |
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[122] | 348 | |
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[123] | 349 | for (uint32_t i=0; i<_param->_nb_inst_branch_complete; i++) |
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| 350 | { |
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| 351 | internal_BRANCH_COMPLETE_VAL [i] = 0; |
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| 352 | // internal_BRANCH_COMPLETE_NUM_BANK [i] = num_bank; |
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| 353 | } |
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| 354 | |
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| 355 | internal_UPDATE_VAL = 0; |
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| 356 | // internal_UPDATE_NUM_BANK = reg_NUM_BANK_HEAD; |
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| 357 | |
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| 358 | |
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| 359 | for (uint32_t i=0; i<_param->_nb_front_end; i++) |
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| 360 | for (uint32_t j=0; j<_param->_nb_context [i]; j++) |
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| 361 | { |
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| 362 | PORT_WRITE(out_RETIRE_EVENT_STATE [i][j], commit_event_state_to_event_state(COMMIT_EVENT_STATE_NO_EVENT)); |
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| 363 | // PORT_WRITE(out_RETIRE_EVENT_FLUSH [i][j], flush); |
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| 364 | // PORT_WRITE(out_RETIRE_EVENT_STOP [i][j], reg_EVENT_STOP [i][j]); |
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| 365 | PORT_WRITE(out_RETIRE_EVENT_STOP [i][j], true); |
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| 366 | } |
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| 367 | } |
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| 368 | |
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| 369 | for (uint32_t i=0; i<_param->_nb_inst_reexecute; ++i) |
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| 370 | PORT_WRITE(out_REEXECUTE_VAL[i], internal_REEXECUTE_VAL [i]); |
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| 371 | for (uint32_t i=0; i<_param->_nb_inst_branch_complete; i++) |
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| 372 | PORT_WRITE(out_BRANCH_COMPLETE_VAL [i], internal_BRANCH_COMPLETE_VAL [i]); |
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| 373 | PORT_WRITE(out_UPDATE_VAL, internal_UPDATE_VAL); |
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| 374 | |
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[88] | 375 | log_end(Commit_unit,FUNCTION); |
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| 376 | }; |
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| 377 | |
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| 378 | }; // end namespace commit_unit |
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| 379 | }; // end namespace ooo_engine |
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| 380 | }; // end namespace multi_ooo_engine |
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| 381 | }; // end namespace core |
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| 382 | }; // end namespace behavioural |
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| 383 | }; // end namespace morpheo |
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| 384 | #endif |
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