1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
|
-- Configuration generation.
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Name_Table; use Name_Table;
with Str_Table;
with Flags;
with Errorout; use Errorout;
with Libraries;
with Vhdl.Errors; use Vhdl.Errors;
with Vhdl.Std_Package;
with Vhdl.Utils; use Vhdl.Utils;
with Vhdl.Nodes_Walk;
with Vhdl.Sem_Scopes;
with Vhdl.Sem_Lib; use Vhdl.Sem_Lib;
with Vhdl.Canon;
with Vhdl.Evaluation;
package body Vhdl.Configuration is
procedure Add_Design_Concurrent_Stmts (Parent : Iir);
procedure Add_Design_Block_Configuration (Blk : Iir_Block_Configuration);
procedure Add_Design_Aspect (Aspect : Iir; Add_Default : Boolean);
Current_File_Dependence : Iir_List := Null_Iir_List;
Current_Configuration : Iir_Configuration_Declaration := Null_Iir;
-- UNIT is a design unit of a configuration declaration.
-- Fill the DESIGN_UNITS table with all design units required to build
-- UNIT.
procedure Add_Design_Unit (Unit : Iir_Design_Unit; From : Location_Type)
is
Loc : constant Location_Type := Get_Location (Unit);
List : Iir_List;
It : List_Iterator;
El : Iir;
Lib_Unit : Iir;
File : Iir_Design_File;
Prev_File_Dependence : Iir_List;
begin
if Flag_Build_File_Dependence then
-- The current file depends on unit.
File := Get_Design_File (Unit);
if Current_File_Dependence /= Null_Iir_List then
-- (There is no dependency for default configuration).
Add_Element (Current_File_Dependence, File);
end if;
end if;
-- If already in the table, then nothing to do.
if Get_Configuration_Mark_Flag (Unit) then
-- There might be some direct recursions:
-- * the default configuration might be implicitly referenced by
-- a direct entity instantiation
-- * a configuration may be referenced by itself for a recursive
-- instantiation
pragma Assert (Get_Configuration_Done_Flag (Unit)
or else (Get_Kind (Get_Library_Unit (Unit))
= Iir_Kind_Configuration_Declaration));
return;
end if;
Set_Configuration_Mark_Flag (Unit, True);
-- May be enabled to debug dependency construction.
if False then
Report_Msg (Msgid_Note, Elaboration, +From,
"%n added", (1 => +Unit));
end if;
Lib_Unit := Get_Library_Unit (Unit);
if Flag_Build_File_Dependence then
-- Switch current_file_dependence to the design file of Unit.
Prev_File_Dependence := Current_File_Dependence;
if Get_Kind (Lib_Unit) = Iir_Kind_Configuration_Declaration
and then Get_Identifier (Lib_Unit) = Null_Identifier
then
-- Do not add dependence for default configuration.
Current_File_Dependence := Null_Iir_List;
else
File := Get_Design_File (Unit);
Current_File_Dependence := Get_File_Dependence_List (File);
-- Create a list if not yet created.
if Current_File_Dependence = Null_Iir_List then
Current_File_Dependence := Create_Iir_List;
Set_File_Dependence_List (File, Current_File_Dependence);
end if;
end if;
end if;
if Flag_Load_All_Design_Units then
Load_Design_Unit (Unit, From);
end if;
-- Add packages from depend list.
-- If Flag_Build_File_Dependences is set, add design units of the
-- dependence list are added, because of LRM 11.4 Analysis Order.
-- Note: a design unit may be referenced but unused.
-- (eg: component specification which does not apply).
List := Get_Dependence_List (Unit);
It := List_Iterate (List);
while Is_Valid (It) loop
El := Get_Element (It);
El := Libraries.Find_Design_Unit (El);
if El /= Null_Iir then
Lib_Unit := Get_Library_Unit (El);
if Flag_Build_File_Dependence then
Add_Design_Unit (El, Loc);
else
case Get_Kind (Lib_Unit) is
when Iir_Kinds_Package_Declaration
| Iir_Kind_Context_Declaration =>
Add_Design_Unit (El, Loc);
when others =>
null;
end case;
end if;
end if;
Next (It);
end loop;
-- Lib_Unit may have changed.
Lib_Unit := Get_Library_Unit (Unit);
case Iir_Kinds_Library_Unit (Get_Kind (Lib_Unit)) is
when Iir_Kind_Package_Declaration =>
-- Analyze the package declaration, so that Set_Package below
-- will set the full package (and not a stub).
Load_Design_Unit (Unit, From);
Lib_Unit := Get_Library_Unit (Unit);
when Iir_Kind_Package_Instantiation_Declaration =>
-- The uninstantiated package is part of the dependency.
null;
when Iir_Kind_Configuration_Declaration =>
-- Add entity and architecture.
-- find all sub-configuration
Load_Design_Unit (Unit, From);
Lib_Unit := Get_Library_Unit (Unit);
Add_Design_Unit (Get_Design_Unit (Get_Entity (Lib_Unit)), Loc);
declare
Blk : Iir_Block_Configuration;
Prev_Configuration : Iir_Configuration_Declaration;
Arch : Iir;
begin
Prev_Configuration := Current_Configuration;
Current_Configuration := Lib_Unit;
Blk := Get_Block_Configuration (Lib_Unit);
Add_Design_Block_Configuration (Blk);
Current_Configuration := Prev_Configuration;
Arch := Strip_Denoting_Name (Get_Block_Specification (Blk));
if Arch /= Null_Iir then
Add_Design_Unit (Get_Design_Unit (Arch), Loc);
end if;
end;
when Iir_Kind_Architecture_Body =>
-- Add entity
-- find all entity/architecture/configuration instantiation
Add_Design_Unit (Get_Design_Unit (Get_Entity (Lib_Unit)), Loc);
Add_Design_Concurrent_Stmts (Lib_Unit);
when Iir_Kind_Entity_Declaration
| Iir_Kind_Package_Body
| Iir_Kind_Context_Declaration
| Iir_Kinds_Verification_Unit =>
null;
end case;
-- Add it in the table, after the dependencies.
Design_Units.Append (Unit);
Set_Configuration_Done_Flag (Unit, True);
-- Restore now the file dependence.
-- Indeed, we may add a package body when we are in a package
-- declaration. However, the later does not depend on the former.
-- The file which depends on the package declaration also depends on
-- the package body.
if Flag_Build_File_Dependence then
Current_File_Dependence := Prev_File_Dependence;
end if;
if Get_Kind (Lib_Unit) = Iir_Kind_Package_Declaration then
-- Add body (if any).
declare
Bod : Iir_Design_Unit;
begin
Bod := Libraries.Find_Secondary_Unit (Unit, Null_Identifier);
if Get_Need_Body (Lib_Unit) then
if not Flags.Flag_Elaborate_With_Outdated then
-- LIB_UNIT requires a body.
if Bod = Null_Iir then
Error_Msg_Elab
(Lib_Unit, "body of %n was never analyzed", +Lib_Unit);
elsif Get_Date (Bod) < Get_Date (Unit) then
-- Cannot use BOD as location, as the location may not
-- exist.
Error_Msg_Elab (Lib_Unit, "%n is outdated", +Bod);
Bod := Null_Iir;
end if;
end if;
else
if Bod /= Null_Iir
and then Get_Date (Bod) < Get_Date (Unit)
then
-- There is a body for LIB_UNIT (which doesn't
-- require it) but it is outdated.
Bod := Null_Iir;
end if;
end if;
if Bod /= Null_Iir then
Set_Package (Get_Library_Unit (Bod), Lib_Unit);
Add_Design_Unit (Bod, Loc);
end if;
end;
end if;
end Add_Design_Unit;
procedure Add_Design_Concurrent_Stmts (Parent : Iir)
is
Stmt : Iir;
begin
Stmt := Get_Concurrent_Statement_Chain (Parent);
while Stmt /= Null_Iir loop
case Get_Kind (Stmt) is
when Iir_Kind_Component_Instantiation_Statement =>
if Is_Entity_Instantiation (Stmt) then
-- Entity or configuration instantiation.
Add_Design_Aspect (Get_Instantiated_Unit (Stmt), True);
end if;
when Iir_Kind_Block_Statement =>
Add_Design_Concurrent_Stmts (Stmt);
when Iir_Kind_For_Generate_Statement =>
Add_Design_Concurrent_Stmts
(Get_Generate_Statement_Body (Stmt));
when Iir_Kind_If_Generate_Statement =>
declare
Clause : Iir;
begin
Clause := Stmt;
while Clause /= Null_Iir loop
Add_Design_Concurrent_Stmts
(Get_Generate_Statement_Body (Clause));
Clause := Get_Generate_Else_Clause (Clause);
end loop;
end;
when Iir_Kind_Case_Generate_Statement =>
declare
Alt : Iir;
begin
Alt := Get_Case_Statement_Alternative_Chain (Stmt);
while Alt /= Null_Iir loop
if not Get_Same_Alternative_Flag (Alt) then
Add_Design_Concurrent_Stmts
(Get_Associated_Block (Alt));
end if;
Alt := Get_Chain (Alt);
end loop;
end;
when Iir_Kinds_Simple_Concurrent_Statement
| Iir_Kind_Psl_Default_Clock
| Iir_Kind_Psl_Declaration
| Iir_Kind_Psl_Endpoint_Declaration
| Iir_Kind_Simple_Simultaneous_Statement =>
null;
when others =>
Error_Kind ("add_design_concurrent_stmts(2)", Stmt);
end case;
Stmt := Get_Chain (Stmt);
end loop;
end Add_Design_Concurrent_Stmts;
procedure Add_Design_Aspect (Aspect : Iir; Add_Default : Boolean)
is
use Libraries;
Loc : Location_Type;
Entity : Iir;
Arch_Name : Iir;
Arch : Iir;
Config : Iir;
Arch_Lib : Iir;
Id : Name_Id;
Entity_Lib : Iir;
begin
if Aspect = Null_Iir then
return;
end if;
Loc := Get_Location (Aspect);
case Get_Kind (Aspect) is
when Iir_Kind_Entity_Aspect_Entity =>
-- Add the entity.
Entity_Lib := Get_Entity (Aspect);
if Entity_Lib = Null_Iir then
-- In case of error (using -c).
return;
end if;
Entity := Get_Design_Unit (Entity_Lib);
Add_Design_Unit (Entity, Loc);
-- Extract and add the architecture.
Arch_Name := Get_Architecture (Aspect);
if Arch_Name /= Null_Iir then
case Get_Kind (Arch_Name) is
when Iir_Kind_Simple_Name =>
Id := Get_Identifier (Arch_Name);
Arch := Load_Secondary_Unit (Entity, Id, Aspect);
if Arch = Null_Iir then
Error_Msg_Elab ("cannot find architecture %i of %n",
(+Id, +Entity_Lib));
return;
else
Set_Named_Entity (Arch_Name, Get_Library_Unit (Arch));
end if;
when Iir_Kind_Reference_Name =>
Arch := Get_Design_Unit (Get_Named_Entity (Arch_Name));
when others =>
Error_Kind ("add_design_aspect", Arch_Name);
end case;
else
Arch := Get_Latest_Architecture (Entity_Lib);
if Arch = Null_Iir then
Error_Msg_Elab (Aspect, "no architecture in library for %n",
+Entity_Lib);
return;
end if;
Arch := Get_Design_Unit (Arch);
end if;
Load_Design_Unit (Arch, Aspect);
-- Add the default configuration if required. Must be done
-- before the architecture in case of recursive instantiation:
-- the configuration depends on the architecture.
if Add_Default then
Arch_Lib := Get_Library_Unit (Arch);
-- The default configuration may already exist due to a
-- previous instantiation. Create it if it doesn't exist.
Config := Get_Default_Configuration_Declaration (Arch_Lib);
if Is_Null (Config) then
Config := Vhdl.Canon.Create_Default_Configuration_Declaration
(Arch_Lib);
Set_Default_Configuration_Declaration (Arch_Lib, Config);
end if;
if Get_Configuration_Mark_Flag (Config)
and then not Get_Configuration_Done_Flag (Config)
then
-- Recursive instantiation.
return;
else
Add_Design_Unit (Config, Loc);
end if;
end if;
-- Otherwise, simply the architecture.
Add_Design_Unit (Arch, Loc);
when Iir_Kind_Entity_Aspect_Configuration =>
Add_Design_Unit
(Get_Design_Unit (Get_Configuration (Aspect)), Loc);
when Iir_Kind_Entity_Aspect_Open =>
null;
when others =>
Error_Kind ("add_design_aspect", Aspect);
end case;
end Add_Design_Aspect;
-- Return TRUE is PORT must not be open, and emit an error message only if
-- LOC is not NULL_IIR.
function Check_Open_Port (Port : Iir; Loc : Iir) return Boolean is
begin
case Get_Mode (Port) is
when Iir_In_Mode =>
-- LRM93 1.1.1.2 Ports
-- A port of mode IN may be unconnected or unassociated only if
-- its declaration includes a default expression.
if Get_Default_Value (Port) = Null_Iir then
if Loc /= Null_Iir then
Error_Msg_Elab_Relaxed
(Loc, Warnid_Port,
"IN %n must be connected (or have a default value)",
(1 => +Port));
end if;
return True;
end if;
when Iir_Out_Mode
| Iir_Inout_Mode
| Iir_Buffer_Mode
| Iir_Linkage_Mode =>
-- LRM93 1.1.1.2 Ports
-- A port of any mode other than IN may be unconnected or
-- unassociated as long as its type is not an unconstrained array
-- type.
if Get_Kind (Get_Type (Port)) in Iir_Kinds_Array_Type_Definition
and then (Get_Constraint_State (Get_Type (Port))
/= Fully_Constrained)
then
if Loc /= Null_Iir then
Error_Msg_Elab
(Loc, "unconstrained %n must be connected", +Port);
end if;
return True;
end if;
when Iir_Unknown_Mode =>
raise Internal_Error;
end case;
return False;
end Check_Open_Port;
procedure Check_Binding_Indication (Conf : Iir)
is
Comp : constant Iir := Get_Named_Entity (Get_Component_Name (Conf));
Bind : constant Iir_Binding_Indication := Get_Binding_Indication (Conf);
Aspect : constant Iir := Get_Entity_Aspect (Bind);
Ent : constant Iir := Get_Entity_From_Entity_Aspect (Aspect);
Assoc_Chain : constant Iir := Get_Port_Map_Aspect_Chain (Bind);
Inter_Chain : constant Iir := Get_Port_Chain (Ent);
Assoc : Iir;
Inter : Iir;
Inst_Assoc_Chain : Iir;
Inst_Inter_Chain : Iir;
Err : Boolean;
Inst : Iir;
Inst_List : Iir_Flist;
Formal : Iir;
Assoc_1 : Iir;
Inter_1 : Iir;
Actual : Iir;
begin
Err := False;
-- Note: the assoc chain is already canonicalized.
-- First pass: check for open associations in configuration.
Assoc := Assoc_Chain;
Inter := Inter_Chain;
while Assoc /= Null_Iir loop
if Get_Kind (Assoc) = Iir_Kind_Association_Element_Open then
Formal := Get_Association_Interface (Assoc, Inter);
Err := Err or Check_Open_Port (Formal, Assoc);
if Is_Warning_Enabled (Warnid_Binding)
and then not Get_Artificial_Flag (Assoc)
then
Report_Start_Group;
Warning_Msg_Elab
(Warnid_Binding, Assoc, "%n of %n is not bound",
(+Formal, +Get_Parent (Formal)));
Warning_Msg_Elab
(Warnid_Binding, Current_Configuration,
"(in %n)", +Current_Configuration);
Report_End_Group;
end if;
end if;
Next_Association_Interface (Assoc, Inter);
end loop;
if Err then
return;
end if;
-- Second pass: check for port connected to open in instantiation.
Inst_List := Get_Instantiation_List (Conf);
for I in Flist_First .. Flist_Last (Inst_List) loop
Inst := Get_Nth_Element (Inst_List, I);
Inst := Get_Named_Entity (Inst);
Err := False;
-- Mark component ports not associated.
Inst_Assoc_Chain := Get_Port_Map_Aspect_Chain (Inst);
Inst_Inter_Chain := Get_Port_Chain (Comp);
Assoc := Inst_Assoc_Chain;
Inter := Inst_Inter_Chain;
while Assoc /= Null_Iir loop
if Get_Kind (Assoc) = Iir_Kind_Association_Element_Open then
Formal := Get_Association_Interface (Assoc, Inter);
Set_Open_Flag (Formal, True);
Err := True;
end if;
Next_Association_Interface (Assoc, Inter);
end loop;
-- If there is any component port open, search them in the
-- configuration.
if Err then
Assoc := Assoc_Chain;
Inter := Inter_Chain;
while Assoc /= Null_Iir loop
Formal := Get_Association_Interface (Assoc, Inter);
if Get_Kind (Assoc) = Iir_Kind_Association_Element_Open then
Actual := Null_Iir;
else
Actual := Get_Actual (Assoc);
Actual := Name_To_Object (Actual);
if Actual /= Null_Iir then
Actual := Get_Object_Prefix (Actual);
end if;
end if;
if Actual /= Null_Iir
and then Get_Open_Flag (Actual)
and then Check_Open_Port (Formal, Null_Iir)
then
-- For a better message, find the location.
Assoc_1 := Inst_Assoc_Chain;
Inter_1 := Inst_Inter_Chain;
while Assoc_1 /= Null_Iir loop
if Get_Kind (Assoc_1) = Iir_Kind_Association_Element_Open
and then
Actual = Get_Association_Interface (Assoc_1, Inter_1)
then
Err := Check_Open_Port (Formal, Assoc_1);
exit;
end if;
Next_Association_Interface (Assoc_1, Inter_1);
end loop;
end if;
Next_Association_Interface (Assoc, Inter);
end loop;
-- Clear open flag.
Assoc := Inst_Assoc_Chain;
Inter := Inst_Inter_Chain;
while Assoc /= Null_Iir loop
if Get_Kind (Assoc) = Iir_Kind_Association_Element_Open then
Formal := Get_Association_Interface (Assoc, Inter);
Set_Open_Flag (Formal, False);
end if;
Next_Association_Interface (Assoc, Inter);
end loop;
end if;
end loop;
end Check_Binding_Indication;
function Is_In_Vendor_Library (Inst : Iir) return Boolean
is
Parent : Iir;
begin
Parent := Strip_Denoting_Name (Inst);
if Is_Error (Parent) then
return False;
end if;
loop
Parent := Get_Parent (Parent);
if Get_Kind (Parent) = Iir_Kind_Library_Declaration then
return Get_Vendor_Library_Flag (Parent);
end if;
end loop;
end Is_In_Vendor_Library;
-- CONF is either a configuration specification or a component
-- configuration.
-- If ADD_DEFAULT is true, then the default configuration for the design
-- binding must be added if required.
procedure Add_Design_Binding_Indication (Conf : Iir; Add_Default : Boolean)
is
Bind : constant Iir_Binding_Indication := Get_Binding_Indication (Conf);
Aspect : Iir;
Inst : Iir;
Comp : Iir;
begin
if Bind = Null_Iir then
if Is_Warning_Enabled (Warnid_Binding) then
Inst := Get_Nth_Element (Get_Instantiation_List (Conf), 0);
Inst := Strip_Denoting_Name (Inst);
Comp := Get_Instantiated_Unit (Inst);
if not Is_In_Vendor_Library (Comp) then
Report_Start_Group;
Warning_Msg_Elab (Warnid_Binding, Conf,
"instance %i of component %i is not bound",
(+Inst, +Comp));
Warning_Msg_Elab (Warnid_Binding, Current_Configuration,
"(in %n)", +Current_Configuration);
Report_End_Group;
end if;
end if;
return;
end if;
Aspect := Get_Entity_Aspect (Bind);
if Is_Valid (Aspect)
and then Get_Kind (Aspect) /= Iir_Kind_Entity_Aspect_Open
then
Check_Binding_Indication (Conf);
Add_Design_Aspect (Aspect, Add_Default);
end if;
end Add_Design_Binding_Indication;
procedure Add_Design_Block_Configuration (Blk : Iir_Block_Configuration)
is
Item : Iir;
Sub_Config : Iir;
begin
if Blk = Null_Iir then
return;
end if;
Item := Get_Configuration_Item_Chain (Blk);
while Item /= Null_Iir loop
case Get_Kind (Item) is
when Iir_Kind_Configuration_Specification =>
Add_Design_Binding_Indication (Item, True);
when Iir_Kind_Component_Configuration =>
Sub_Config := Get_Block_Configuration (Item);
Add_Design_Binding_Indication (Item, Sub_Config = Null_Iir);
Add_Design_Block_Configuration (Sub_Config);
when Iir_Kind_Block_Configuration =>
Add_Design_Block_Configuration (Item);
when others =>
Error_Kind ("add_design_block_configuration", Item);
end case;
Item := Get_Chain (Item);
end loop;
end Add_Design_Block_Configuration;
-- elaboration of a design hierarchy:
-- creates a list of design unit.
--
-- find top configuration (may be a default one), add it to the list.
-- For each element of the list:
-- add direct dependences (packages, entity, arch) if not in the list
-- for architectures and configuration: find instantiations and add
-- corresponding configurations.
--
-- Return the configuration declaration for the design.
function Configure (Primary_Id : Name_Id; Secondary_Id : Name_Id)
return Iir
is
use Libraries;
Unit : Iir_Design_Unit;
Lib_Unit : Iir;
Top : Iir;
begin
Unit := Find_Primary_Unit (Work_Library, Primary_Id);
if Unit = Null_Iir then
Error_Msg_Elab ("cannot find entity or configuration "
& Name_Table.Image (Primary_Id));
return Null_Iir;
end if;
Lib_Unit := Get_Library_Unit (Unit);
case Get_Kind (Lib_Unit) is
when Iir_Kind_Entity_Declaration =>
-- Use WORK as location (should use a command line location ?)
Load_Design_Unit (Unit, Work_Library);
Lib_Unit := Get_Library_Unit (Unit);
if Secondary_Id /= Null_Identifier then
Unit := Find_Secondary_Unit (Unit, Secondary_Id);
if Unit = Null_Iir then
Error_Msg_Elab ("cannot find architecture %i of %n",
(+Secondary_Id, +Lib_Unit));
return Null_Iir;
end if;
else
declare
Arch_Unit : Iir_Architecture_Body;
begin
Arch_Unit := Get_Latest_Architecture (Lib_Unit);
if Arch_Unit = Null_Iir then
Error_Msg_Elab
("%n has no architecture in library %i",
(+Lib_Unit, +Work_Library));
return Null_Iir;
end if;
Unit := Get_Design_Unit (Arch_Unit);
end;
end if;
Load_Design_Unit (Unit, Lib_Unit);
if Nbr_Errors /= 0 then
return Null_Iir;
end if;
Lib_Unit := Get_Library_Unit (Unit);
pragma Assert
(Is_Null (Get_Default_Configuration_Declaration (Lib_Unit)));
Top := Vhdl.Canon.Create_Default_Configuration_Declaration
(Lib_Unit);
Set_Default_Configuration_Declaration (Lib_Unit, Top);
pragma Assert (Is_Valid (Top));
when Iir_Kind_Configuration_Declaration =>
if Secondary_Id /= Null_Identifier then
Error_Msg_Elab
("no secondary unit allowed after configuration %i",
+Primary_Id);
return Null_Iir;
end if;
Top := Unit;
when others =>
Error_Msg_Elab ("%i is neither an entity nor a configuration",
+Primary_Id);
return Null_Iir;
end case;
-- Exclude std.standard
Set_Configuration_Mark_Flag (Vhdl.Std_Package.Std_Standard_Unit, True);
Set_Configuration_Done_Flag (Vhdl.Std_Package.Std_Standard_Unit, True);
Add_Design_Unit (Top, Command_Line_Location);
return Top;
end Configure;
procedure Add_Verification_Unit (Vunit : Iir)
is
Hier_Name : constant Iir := Get_Hierarchical_Name (Vunit);
Name : Iir;
begin
-- Not bound.
if Hier_Name = Null_Iir then
return;
end if;
Name := Get_Architecture (Hier_Name);
if Name /= Null_Node then
Name := Get_Named_Entity (Name);
pragma Assert (Get_Kind (Name) = Iir_Kind_Architecture_Body);
else
Name := Get_Entity_Name (Hier_Name);
Name := Get_Named_Entity (Name);
pragma Assert (Get_Kind (Name) = Iir_Kind_Entity_Declaration);
end if;
if not Get_Configuration_Mark_Flag (Get_Design_Unit (Name)) then
-- Not for a configured unit.
return;
end if;
Set_Bound_Vunit_Chain (Vunit, Get_Bound_Vunit_Chain (Name));
Set_Bound_Vunit_Chain (Name, Vunit);
Add_Design_Unit (Get_Design_Unit (Vunit), Get_Location (Vunit));
end Add_Verification_Unit;
procedure Add_Verification_Units
is
Library : Iir;
File : Iir;
Unit : Iir;
Lib : Iir;
begin
-- For each units:
Library := Libraries.Get_Libraries_Chain;
while Library /= Null_Iir loop
File := Get_Design_File_Chain (Library);
while File /= Null_Iir loop
Unit := Get_First_Design_Unit (File);
while Unit /= Null_Iir loop
Lib := Get_Library_Unit (Unit);
if Get_Kind (Lib) = Iir_Kind_Vunit_Declaration then
-- Load it.
Load_Design_Unit (Unit, Unit);
Add_Verification_Unit (Get_Library_Unit (Unit));
end if;
Unit := Get_Chain (Unit);
end loop;
File := Get_Chain (File);
end loop;
Library := Get_Chain (Library);
end loop;
end Add_Verification_Units;
procedure Check_Entity_Declaration_Top
(Entity : Iir_Entity_Declaration; Enable_Override : Boolean)
is
Has_Error : Boolean := False;
-- Return TRUE if GRT supports override of generic GEN.
function Allow_Generic_Override (Gen : Iir) return Boolean
is
Gen_Type : constant Iir := Get_Type (Gen);
begin
case Get_Kind (Gen_Type) is
when Iir_Kind_Integer_Type_Definition
| Iir_Kind_Integer_Subtype_Definition
| Iir_Kind_Enumeration_Type_Definition
| Iir_Kind_Enumeration_Subtype_Definition =>
return True;
when Iir_Kind_Array_Type_Definition
| Iir_Kind_Array_Subtype_Definition =>
-- Only one-dimensional arrays of enumeration are allowed.
-- If unconstrained, the index must be of integer type.
if Get_Kind (Get_Base_Type (Get_Element_Subtype (Gen_Type)))
/= Iir_Kind_Enumeration_Type_Definition
then
-- Not an array of enumeration type.
return False;
end if;
declare
Indexes : constant Iir_Flist :=
Get_Index_Subtype_List (Gen_Type);
begin
if Get_Nbr_Elements (Indexes) /= 1 then
-- Not a one-dimensional array.
return False;
end if;
if Get_Constraint_State (Gen_Type) /= Fully_Constrained
and then (Get_Kind (Get_Index_Type (Indexes, 0))
/= Iir_Kind_Integer_Subtype_Definition)
then
-- Index not constrained or not of integer subtype.
return False;
end if;
end;
return True;
when others =>
return False;
end case;
end Allow_Generic_Override;
procedure Error (Loc : Iir; Msg : String; Arg1 : Earg_Type) is
begin
if not Has_Error then
Error_Msg_Elab ("%n cannot be at the top of a design", +Entity);
Has_Error := True;
end if;
Error_Msg_Elab (Loc, Msg, Arg1);
end Error;
El : Iir;
begin
-- Check generics.
El := Get_Generic_Chain (Entity);
while El /= Null_Iir loop
case Iir_Kinds_Interface_Declaration (Get_Kind (El)) is
when Iir_Kinds_Interface_Object_Declaration =>
if Get_Default_Value (El) = Null_Iir then
if not (Enable_Override and Allow_Generic_Override (El)) then
Error (El, "(%n has no default value)", +El);
end if;
end if;
when Iir_Kinds_Interface_Subprogram_Declaration =>
Error (El, "(%n is a subprogram generic)", +El);
when Iir_Kind_Interface_Type_Declaration =>
Error (El, "(%n is a type generic)", +El);
when Iir_Kind_Interface_Package_Declaration =>
Error (El, "(%n is a package generic)", +El);
when Iir_Kind_Interface_Terminal_Declaration =>
null;
end case;
El := Get_Chain (El);
end loop;
-- Check port.
El := Get_Port_Chain (Entity);
while El /= Null_Iir loop
if not Is_Fully_Constrained_Type (Get_Type (El))
and then Get_Default_Value (El) = Null_Iir
then
Error (El, "(%n is unconstrained and has no default value)", +El);
end if;
El := Get_Chain (El);
end loop;
end Check_Entity_Declaration_Top;
package Top is
procedure Mark_Instantiated_Units
(Lib : Iir_Library_Declaration; Loc : Location_Type);
Nbr_Top_Entities : Natural;
First_Top_Entity : Iir;
procedure Find_First_Top_Entity (Lib : Iir_Library_Declaration);
end Top;
package body Top is
use Nodes_Walk;
Loc_Err : Location_Type;
-- Add entities to the name table (so that they easily could be found).
function Add_Entity_Cb (Design : Iir) return Walk_Status
is
Kind : constant Iir_Kind := Get_Kind (Get_Library_Unit (Design));
begin
if not Flags.Flag_Elaborate_With_Outdated then
-- Discard obsolete or non-analyzed units.
if Get_Date (Design) < Date_Analyzed then
return Walk_Continue;
end if;
end if;
case Iir_Kinds_Library_Unit (Kind) is
when Iir_Kind_Architecture_Body
| Iir_Kind_Configuration_Declaration =>
Load_Design_Unit (Design, Loc_Err);
when Iir_Kind_Entity_Declaration =>
Load_Design_Unit (Design, Loc_Err);
Vhdl.Sem_Scopes.Add_Name (Get_Library_Unit (Design));
when Iir_Kind_Package_Declaration
| Iir_Kind_Package_Instantiation_Declaration
| Iir_Kind_Package_Body
| Iir_Kinds_Verification_Unit
| Iir_Kind_Context_Declaration =>
null;
end case;
return Walk_Continue;
end Add_Entity_Cb;
procedure Mark_Aspect (Aspect : Iir)
is
Unit : Iir;
begin
case Iir_Kinds_Entity_Aspect (Get_Kind (Aspect)) is
when Iir_Kind_Entity_Aspect_Entity =>
Unit := Get_Entity (Aspect);
if Unit /= Null_Node then
-- There may be an error (unit not found).
Set_Elab_Flag (Get_Parent (Unit), True);
end if;
when Iir_Kind_Entity_Aspect_Configuration
| Iir_Kind_Entity_Aspect_Open =>
null;
end case;
end Mark_Aspect;
function Mark_Instantiation_Cb (Stmt : Iir) return Walk_Status
is
Inst : Iir;
begin
if Get_Kind (Stmt) /= Iir_Kind_Component_Instantiation_Statement then
return Walk_Continue;
end if;
Inst := Get_Instantiated_Unit (Stmt);
case Get_Kind (Inst) is
when Iir_Kinds_Denoting_Name =>
-- TODO: look at default_binding_indication
-- or configuration_specification ?
declare
Config : constant Iir :=
Get_Configuration_Specification (Stmt);
begin
if Is_Valid (Config) then
Mark_Aspect
(Get_Entity_Aspect (Get_Binding_Indication (Config)));
return Walk_Continue;
end if;
end;
declare
use Vhdl.Sem_Scopes;
Comp : constant Iir := Get_Named_Entity (Inst);
Interp : Name_Interpretation_Type;
Decl : Iir;
begin
if Is_Error (Comp) then
return Walk_Continue;
end if;
Interp := Get_Interpretation (Get_Identifier (Comp));
if Valid_Interpretation (Interp) then
Decl := Get_Declaration (Interp);
pragma Assert
(Get_Kind (Decl) = Iir_Kind_Entity_Declaration);
Set_Elab_Flag (Get_Design_Unit (Decl), True);
else
-- If there is no corresponding entity name for the
-- component name, assume it belongs to a different
-- library (or will be set by a configuration unit).
null;
end if;
end;
when Iir_Kinds_Entity_Aspect =>
Mark_Aspect (Inst);
when others =>
Error_Kind ("mark_instantiation_cb", Stmt);
end case;
return Walk_Continue;
end Mark_Instantiation_Cb;
function Mark_Units_Cb (Design : Iir) return Walk_Status
is
Unit : constant Iir := Get_Library_Unit (Design);
Status : Walk_Status;
begin
if not Flags.Flag_Elaborate_With_Outdated then
if Get_Date (Design) < Date_Analyzed then
-- Skip outdated units.
return Walk_Continue;
end if;
end if;
case Iir_Kinds_Library_Unit (Get_Kind (Unit)) is
when Iir_Kind_Architecture_Body =>
Status := Walk_Concurrent_Statements_Chain
(Get_Concurrent_Statement_Chain (Unit),
Mark_Instantiation_Cb'Access);
pragma Assert (Status = Walk_Continue);
when Iir_Kind_Configuration_Declaration =>
-- Just ignored.
null;
when Iir_Kind_Package_Declaration
| Iir_Kind_Package_Instantiation_Declaration
| Iir_Kind_Package_Body
| Iir_Kind_Entity_Declaration
| Iir_Kinds_Verification_Unit
| Iir_Kind_Context_Declaration =>
null;
end case;
return Walk_Continue;
end Mark_Units_Cb;
procedure Mark_Instantiated_Units
(Lib : Iir_Library_Declaration; Loc : Location_Type)
is
Status : Walk_Status;
begin
pragma Assert (Loc /= No_Location);
Loc_Err := Loc;
-- Name table is used to map names to entities.
Vhdl.Sem_Scopes.Push_Interpretations;
Vhdl.Sem_Scopes.Open_Declarative_Region;
-- 1. Add all design entities in the name table.
Status := Walk_Design_Units (Lib, Add_Entity_Cb'Access);
pragma Assert (Status = Walk_Continue);
-- 2. Walk architecture and configurations, and mark instantiated
-- entities.
Status := Walk_Design_Units (Lib, Mark_Units_Cb'Access);
pragma Assert (Status = Walk_Continue);
Vhdl.Sem_Scopes.Close_Declarative_Region;
Vhdl.Sem_Scopes.Pop_Interpretations;
end Mark_Instantiated_Units;
function Extract_Entity_Cb (Design : Iir) return Walk_Status
is
Unit : constant Iir := Get_Library_Unit (Design);
begin
if Get_Kind (Unit) = Iir_Kind_Entity_Declaration then
if Get_Elab_Flag (Design) then
-- Clean elab flag.
Set_Elab_Flag (Design, False);
else
if Flags.Verbose then
Report_Msg (Msgid_Note, Elaboration, +Unit,
"candidate for top entity: %n", (1 => +Unit));
end if;
Nbr_Top_Entities := Nbr_Top_Entities + 1;
if Nbr_Top_Entities = 1 then
First_Top_Entity := Unit;
end if;
end if;
end if;
return Walk_Continue;
end Extract_Entity_Cb;
procedure Find_First_Top_Entity (Lib : Iir_Library_Declaration)
is
Status : Walk_Status;
begin
Nbr_Top_Entities := 0;
First_Top_Entity := Null_Iir;
Status := Walk_Design_Units (Lib, Extract_Entity_Cb'Access);
pragma Assert (Status = Walk_Continue);
end Find_First_Top_Entity;
end Top;
function Find_Top_Entity (From : Iir; Loc : Location_Type) return Iir is
begin
-- FROM is a library or a design file.
Top.Mark_Instantiated_Units (From, Loc);
Top.Find_First_Top_Entity (From);
if Top.Nbr_Top_Entities = 1 then
return Top.First_Top_Entity;
else
return Null_Iir;
end if;
end Find_Top_Entity;
type Override_Entry is record
Gen : Name_Id;
Value : String_Acc;
end record;
package Override_Table is new Tables
(Table_Component_Type => Override_Entry,
Table_Index_Type => Natural,
Table_Low_Bound => 1,
Table_Initial => 16);
procedure Add_Generic_Override (Id : Name_Id; Value : String) is
begin
Override_Table.Append (Override_Entry'(Gen => Id,
Value => new String'(Value)));
end Add_Generic_Override;
function Override_String_Generic
(Value : String_Acc; Formal_Type : Iir) return Iir
is
use Str_Table;
use Vhdl.Evaluation;
El_Type : constant Iir :=
Get_Base_Type (Get_Element_Subtype (Formal_Type));
F : constant Positive := Value'First;
Elist : Iir_Flist;
Res : Iir;
Str8 : String8_Id;
Ntype : Iir;
Len : Int32;
begin
if Get_Kind (El_Type) /= Iir_Kind_Enumeration_Type_Definition then
return Null_Iir;
end if;
Elist := Get_Enumeration_Literal_List (El_Type);
Str8 := Create_String8;
if Value'Last >= F + 2
and then (Value (F) = 'x' or Value (F) = 'X')
and then Value (F + 1) = '"'
and then Value (Value'Last) = '"'
then
-- Hexa string.
declare
C : Character;
V : Natural;
E0, E1 : Iir;
E : Iir;
begin
E0 := Find_Name_In_Flist (Elist, Get_Identifier ('0'));
E1 := Find_Name_In_Flist (Elist, Get_Identifier ('1'));
if E0 = Null_Iir or E1 = Null_Iir then
return Null_Iir;
end if;
Len := 0;
for I in F + 2 .. Value'Last - 1 loop
C := Value (I);
case C is
when '0' .. '9' =>
V := Character'Pos (C) - Character'Pos ('0');
when 'A' .. 'F' =>
V := Character'Pos (C) - Character'Pos ('A') + 10;
when 'a' .. 'f' =>
V := Character'Pos (C) - Character'Pos ('a') + 10;
when '_' =>
V := 16;
when others =>
Error_Msg_Elab ("incorrect character in bit string");
V := 16;
end case;
if V < 16 then
Len := Len + 4;
for J in 1 .. 4 loop
if V >= 8 then
E := E1;
V := V - 8;
else
E := E0;
end if;
Append_String8 (Nat8 (Get_Enum_Pos (E)));
V := V * 2;
end loop;
end if;
end loop;
end;
else
declare
Eid : Name_Id;
Elit : Iir;
begin
for I in Value'Range loop
Eid := Get_Identifier (Value (I));
Elit := Find_Name_In_Flist (Elist, Eid);
if Elit = Null_Iir then
Error_Msg_Elab ("incorrect character %i in string", +Eid);
Elit := Get_Nth_Element (Elist, 0);
end if;
Append_String8 (Nat8 (Get_Enum_Pos (Elit)));
end loop;
end;
Len := Value'Length;
end if;
Res := Create_Iir (Iir_Kind_String_Literal8);
Set_String8_Id (Res, Str8);
-- FIXME: check characters are in the type.
Set_String_Length (Res, Len);
Set_Expr_Staticness (Res, Locally);
Ntype := Create_Unidim_Array_By_Length
(Get_Base_Type (Formal_Type), Value'Length, Res);
Set_Type (Res, Ntype);
Set_Literal_Subtype (Res, Ntype);
return Res;
end Override_String_Generic;
procedure Override_Generic (Gen : Iir; Value : String_Acc)
is
use Vhdl.Evaluation;
Formal_Type : constant Iir := Get_Type (Gen);
Formal_Btype : constant Iir := Get_Base_Type (Formal_Type);
Res : Iir;
begin
case Get_Kind (Formal_Btype) is
when Iir_Kind_Integer_Type_Definition
| Iir_Kind_Enumeration_Type_Definition =>
Res := Eval_Value_Attribute (Value.all, Formal_Type, Gen);
if not Eval_Is_In_Bound (Res, Formal_Type) then
Error_Msg_Elab ("override for %n is out of bounds", +Gen);
return;
end if;
Set_Literal_Origin (Res, Null_Iir);
when Iir_Kind_Array_Type_Definition =>
if Is_One_Dimensional_Array_Type (Formal_Btype) then
Res := Override_String_Generic (Value, Formal_Type);
else
Res := Null_Iir;
end if;
when others =>
Res := Null_Iir;
end case;
if Res = Null_Iir then
Error_Msg_Elab ("unhandled override for %n", +Gen);
return;
end if;
if Get_Is_Ref (Gen) then
Set_Is_Ref (Gen, False);
else
if Get_Has_Identifier_List (Gen) then
-- Transfer ownership to the next interface.
Set_Is_Ref (Get_Chain (Gen), False);
end if;
end if;
Set_Location (Res, No_Location);
Set_Default_Value (Gen, Res);
end Override_Generic;
procedure Apply_Generic_Override (Ent : Iir)
is
Inter_Chain : constant Iir := Get_Generic_Chain (Ent);
Inter : Iir;
begin
for I in Override_Table.First .. Override_Table.Last loop
declare
Over : constant Override_Entry := Override_Table.Table (I);
begin
Inter := Inter_Chain;
while Inter /= Null_Iir loop
exit when Get_Identifier (Inter) = Over.Gen;
Inter := Get_Chain (Inter);
end loop;
if Inter = Null_Iir then
Error_Msg_Elab ("no generic %i for -g", +Over.Gen);
elsif Get_Kind (Inter) /= Iir_Kind_Interface_Constant_Declaration
then
Error_Msg_Elab
("generic %n cannot be overriden (not a constant)",
+Over.Gen);
else
Override_Generic (Inter, Over.Value);
end if;
end;
end loop;
end Apply_Generic_Override;
end Vhdl.Configuration;
|