[88] | 1 | #ifdef SYSTEMC |
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| 2 | /* |
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| 3 | * $Id: Special_Register_unit_genMealy_spr_access.cpp 123 2009-06-08 20:43:30Z 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/Special_Register_unit/include/Special_Register_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 special_register_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 "Special_Register_unit::genMealy_spr_access" |
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| 21 | void Special_Register_unit::genMealy_spr_access (void) |
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| 22 | { |
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| 23 | log_begin(Special_Register_unit,FUNCTION); |
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[98] | 24 | log_function(Special_Register_unit,FUNCTION,_name.c_str()); |
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[88] | 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 | // =====[ SPR_ACCESS ]================================================ |
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| 30 | // =================================================================== |
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| 31 | for (uint32_t i=0; i<_param->_nb_inst_reexecute; i++) |
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[98] | 32 | // not necessery if have not read enable |
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| 33 | if (PORT_READ(in_SPR_ACCESS_VAL [i])) |
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[88] | 34 | { |
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[98] | 35 | log_printf(TRACE,Special_Register_unit,FUNCTION," * SPR_ACCESS [%d]",i); |
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| 36 | |
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[88] | 37 | Tcontext_t front_end_id = (_param->_have_port_front_end_id)?PORT_READ(in_SPR_ACCESS_FRONT_END_ID [i]):0; |
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| 38 | Tcontext_t context_id = (_param->_have_port_context_id )?PORT_READ(in_SPR_ACCESS_CONTEXT_ID [i]):0; |
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| 39 | Tspr_address_t num_group = PORT_READ(in_SPR_ACCESS_NUM_GROUP [i]); |
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| 40 | Tspr_address_t num_reg = PORT_READ(in_SPR_ACCESS_NUM_REG [i]); |
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| 41 | |
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[98] | 42 | log_printf(TRACE,Special_Register_unit,FUNCTION," * front_end_id : %d",front_end_id); |
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| 43 | log_printf(TRACE,Special_Register_unit,FUNCTION," * context_id : %d",context_id ); |
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| 44 | log_printf(TRACE,Special_Register_unit,FUNCTION," * num_group : %d",num_group ); |
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| 45 | log_printf(TRACE,Special_Register_unit,FUNCTION," * num_reg : %d",num_reg ); |
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| 46 | |
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| 47 | #ifdef DEBUG_TEST |
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| 48 | if (not _spr_access_mode [front_end_id][context_id]->exist(num_group,num_reg)) |
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| 49 | msgWarning("Access at an invalid special register (group %d, register %d)\n",num_group,num_reg); |
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| 50 | #endif |
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| 51 | |
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[88] | 52 | SR * sr = static_cast<SR*>(_spr [front_end_id][context_id][GROUP_SYSTEM_AND_CONTROL][SPR_SR]); |
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| 53 | |
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| 54 | Tcontrol_t sm = sr->sm ; |
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| 55 | Tcontrol_t sumra = sr->sumra; |
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| 56 | |
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| 57 | Tcontrol_t valid = _spr_access_mode [front_end_id][context_id]->read(spr_address_t(num_group,num_reg), |
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| 58 | sm, |
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| 59 | sumra); |
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[98] | 60 | |
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| 61 | log_printf(TRACE,Special_Register_unit,FUNCTION," * SM : %d",sm); |
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| 62 | log_printf(TRACE,Special_Register_unit,FUNCTION," * SUMRA : %d",sumra); |
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| 63 | log_printf(TRACE,Special_Register_unit,FUNCTION," * valid : %d",valid); |
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| 64 | |
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| 65 | // ISA OpenRISC : no action/exception if unauthorised spr access. Also, read 0. |
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| 66 | // if (not PORT_READ(in_SPR_ACCESS_WEN [i])) |
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| 67 | // { |
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| 68 | Tspr_t rdata = (valid)?(_spr[front_end_id][context_id][num_group][num_reg]->read()):0; |
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| 69 | |
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| 70 | log_printf(TRACE,Special_Register_unit,FUNCTION," * rdata : %.8x",rdata); |
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| 71 | |
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| 72 | PORT_WRITE(out_SPR_ACCESS_RDATA [i], rdata); |
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| 73 | // } |
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| 74 | PORT_WRITE(out_SPR_ACCESS_INVALID [i], not valid); |
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[88] | 75 | } |
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[123] | 76 | } |
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| 77 | // else |
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| 78 | // { |
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| 79 | |
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| 80 | // } |
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[88] | 81 | |
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| 82 | log_end(Special_Register_unit,FUNCTION); |
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| 83 | }; |
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| 84 | |
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| 85 | }; // end namespace special_register_unit |
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| 86 | }; // end namespace ooo_engine |
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| 87 | }; // end namespace multi_ooo_engine |
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| 88 | }; // end namespace core |
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| 89 | |
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| 90 | }; // end namespace behavioural |
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| 91 | }; // end namespace morpheo |
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| 92 | #endif |
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