1 | #ifdef SYSTEMC |
---|
2 | /* |
---|
3 | * $Id$ |
---|
4 | * |
---|
5 | * [ Description ] |
---|
6 | * |
---|
7 | */ |
---|
8 | |
---|
9 | #include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/include/Update_Prediction_Table.h" |
---|
10 | |
---|
11 | namespace morpheo { |
---|
12 | namespace behavioural { |
---|
13 | namespace core { |
---|
14 | namespace multi_front_end { |
---|
15 | namespace front_end { |
---|
16 | namespace prediction_unit { |
---|
17 | namespace update_prediction_table { |
---|
18 | |
---|
19 | |
---|
20 | #undef FUNCTION |
---|
21 | #define FUNCTION "Update_Prediction_Table::genMealy_branch_complete" |
---|
22 | void Update_Prediction_Table::genMealy_branch_complete (void) |
---|
23 | { |
---|
24 | log_begin(Update_Prediction_Table,FUNCTION); |
---|
25 | log_function(Update_Prediction_Table,FUNCTION,_name.c_str()); |
---|
26 | |
---|
27 | if (PORT_READ(in_NRESET)) |
---|
28 | { |
---|
29 | for (uint32_t i=0; i<_param->_nb_inst_branch_complete; i++) |
---|
30 | #ifdef DEBUG_TEST |
---|
31 | // just to don't have exception in not transaction |
---|
32 | if (PORT_READ(in_BRANCH_COMPLETE_VAL [i])) |
---|
33 | #endif |
---|
34 | { |
---|
35 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_COMPLETE [%d]",i); |
---|
36 | |
---|
37 | // Read information |
---|
38 | Tcontext_t context = (_param->_have_port_context_id)?PORT_READ(in_BRANCH_COMPLETE_CONTEXT_ID [i]):0; |
---|
39 | Tdepth_t depth = (_param->_have_port_depth )?PORT_READ(in_BRANCH_COMPLETE_DEPTH [i]):0; |
---|
40 | Tcontrol_t miss = false; // init |
---|
41 | Tcontrol_t take = reg_UPDATE_PREDICTION_TABLE [context][depth]._last_take ; |
---|
42 | Taddress_t addr_dest = reg_UPDATE_PREDICTION_TABLE [context][depth]._address_dest; |
---|
43 | Tbranch_condition_t condition = reg_UPDATE_PREDICTION_TABLE [context][depth]._condition ; |
---|
44 | |
---|
45 | Tcontrol_t no_sequence = PORT_READ(in_BRANCH_COMPLETE_NO_SEQUENCE [i]); |
---|
46 | Taddress_t addr_good = PORT_READ(in_BRANCH_COMPLETE_ADDRESS [i]); |
---|
47 | |
---|
48 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * context : %d",context); |
---|
49 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * depth : %d",depth ); |
---|
50 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * condition : %s",toString(condition).c_str()); |
---|
51 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * no_sequence : %d",no_sequence); |
---|
52 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * address_good : %.8x",addr_good); |
---|
53 | |
---|
54 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * (before)"); |
---|
55 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * miss : %d",miss); |
---|
56 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * take : %d",take); |
---|
57 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * address_dest : %.8x",addr_dest); |
---|
58 | |
---|
59 | // Test branch condition |
---|
60 | switch (condition) |
---|
61 | { |
---|
62 | case BRANCH_CONDITION_NONE_WITHOUT_WRITE_STACK : // l.j |
---|
63 | case BRANCH_CONDITION_NONE_WITH_WRITE_STACK : // l.jal |
---|
64 | { |
---|
65 | //miss : always hit |
---|
66 | //addr_dest : compute in decod stage |
---|
67 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_NONE_WITHOUT_WRITE_STACK"); |
---|
68 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_NONE_WITH_WRITE_STACK "); |
---|
69 | |
---|
70 | #ifdef DEBUG_TEST |
---|
71 | if (take != 1) |
---|
72 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad direction.",i,toString(condition).c_str())); |
---|
73 | // if (addr_dest != addr_good) |
---|
74 | // throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad destination address.",i,toString(condition).c_str())); |
---|
75 | #endif |
---|
76 | |
---|
77 | break; |
---|
78 | } |
---|
79 | case BRANCH_CONDITION_FLAG_UNSET : // l.bnf |
---|
80 | case BRANCH_CONDITION_FLAG_SET : // l.bf |
---|
81 | { |
---|
82 | //addr_dest : compute in decod stage |
---|
83 | //miss if the direction is bad |
---|
84 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_FLAG"); |
---|
85 | |
---|
86 | Tcontrol_t take_good = no_sequence; |
---|
87 | |
---|
88 | miss = (take != take_good); |
---|
89 | take = take_good; |
---|
90 | |
---|
91 | #ifdef DEBUG_TEST |
---|
92 | // if (addr_dest != addr_good) |
---|
93 | // throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad destination address.",i,toString(condition).c_str())); |
---|
94 | #endif |
---|
95 | |
---|
96 | break; |
---|
97 | } |
---|
98 | case BRANCH_CONDITION_READ_REGISTER_WITHOUT_WRITE_STACK : // l.jr (rb!=r9) |
---|
99 | case BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK : // l.jalr |
---|
100 | case BRANCH_CONDITION_READ_STACK : // l.jr (rb==r9) |
---|
101 | { |
---|
102 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_READ_REGISTER_WITHOUT_WRITE_STACK"); |
---|
103 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK "); |
---|
104 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * BRANCH_CONDITION_READ_STACK "); |
---|
105 | |
---|
106 | // miss if destination address is bad |
---|
107 | miss = (addr_dest != addr_good); |
---|
108 | addr_dest = addr_good; |
---|
109 | |
---|
110 | #ifdef DEBUG_TEST |
---|
111 | if (take != 1) |
---|
112 | throw ERRORMORPHEO(FUNCTION,toString("Branch_complete[%d] (condition %s) : bad direction.",i,toString(condition).c_str())); |
---|
113 | #endif |
---|
114 | |
---|
115 | break; |
---|
116 | } |
---|
117 | } |
---|
118 | |
---|
119 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * (after)"); |
---|
120 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * miss : %d",miss); |
---|
121 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * take : %d",take); |
---|
122 | log_printf(TRACE,Update_Prediction_Table,FUNCTION," * address_dest : %.8x",addr_dest); |
---|
123 | |
---|
124 | internal_BRANCH_COMPLETE_MISS_PREDICTION [i] = miss ; |
---|
125 | internal_BRANCH_COMPLETE_TAKE [i] = take ; |
---|
126 | internal_BRANCH_COMPLETE_ADDRESS_DEST [i] = addr_dest; |
---|
127 | |
---|
128 | PORT_WRITE(out_BRANCH_COMPLETE_MISS_PREDICTION [i], internal_BRANCH_COMPLETE_MISS_PREDICTION [i]); |
---|
129 | // PORT_WRITE(out_BRANCH_COMPLETE_TAKE [i], internal_BRANCH_COMPLETE_TAKE [i]); |
---|
130 | // PORT_WRITE(out_BRANCH_COMPLETE_ADDRESS_SRC [i], reg_UPDATE_PREDICTION_TABLE [context][depth]._address_src); |
---|
131 | // PORT_WRITE(out_BRANCH_COMPLETE_ADDRESS_DEST [i], internal_BRANCH_COMPLETE_ADDRESS_DEST [i]); |
---|
132 | } |
---|
133 | } |
---|
134 | log_end(Update_Prediction_Table,FUNCTION); |
---|
135 | }; |
---|
136 | |
---|
137 | }; // end namespace update_prediction_table |
---|
138 | }; // end namespace prediction_unit |
---|
139 | }; // end namespace front_end |
---|
140 | }; // end namespace multi_front_end |
---|
141 | }; // end namespace core |
---|
142 | |
---|
143 | }; // end namespace behavioural |
---|
144 | }; // end namespace morpheo |
---|
145 | #endif |
---|