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
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
|
/* Output sdb-format symbol table information from GNU compiler.
Copyright (C) 1988, 1992 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC 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.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* mike@tredysvr.Tredydev.Unisys.COM says:
I modified the struct.c example and have a nm of a .o resulting from the
AT&T C compiler. From the example below I would conclude the following:
1. All .defs from structures are emitted as scanned. The example below
clearly shows the symbol table entries for BoxRec2 are after the first
function.
2. All functions and their locals (including statics) are emitted as scanned.
3. All nested unnamed union and structure .defs must be emitted before
the structure in which they are nested. The AT&T assembler is a
one pass beast as far as symbolics are concerned.
4. All structure .defs are emitted before the typedefs that refer to them.
5. All top level static and external variable definitions are moved to the
end of file with all top level statics occurring first before externs.
6. All undefined references are at the end of the file.
*/
#include "config.h"
#ifdef SDB_DEBUGGING_INFO
#include "tree.h"
#include "rtl.h"
#include <stdio.h>
#include "regs.h"
#include "flags.h"
#include "insn-config.h"
#include "reload.h"
/* Mips systems use the SDB functions to dump out symbols, but
do not supply usable syms.h include files. */
#if defined(USG) && !defined(MIPS)
#include <syms.h>
/* Use T_INT if we don't have T_VOID. */
#ifndef T_VOID
#define T_VOID T_INT
#endif
#else /* not USG, or MIPS */
#include "gsyms.h"
#endif /* not USG, or MIPS */
/* #include <storclass.h> used to be this instead of syms.h. */
/* 1 if PARM is passed to this function in memory. */
#define PARM_PASSED_IN_MEMORY(PARM) \
(GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
/* A C expression for the integer offset value of an automatic variable
(C_AUTO) having address X (an RTX). */
#ifndef DEBUGGER_AUTO_OFFSET
#define DEBUGGER_AUTO_OFFSET(X) \
(GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
#endif
/* A C expression for the integer offset value of an argument (C_ARG)
having address X (an RTX). The nominal offset is OFFSET. */
#ifndef DEBUGGER_ARG_OFFSET
#define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
#endif
/* Line number of beginning of current function, minus one.
Negative means not in a function or not using sdb. */
int sdb_begin_function_line = -1;
/* Counter to generate unique "names" for nameless struct members. */
static int unnamed_struct_number = 0;
extern FILE *asm_out_file;
extern tree current_function_decl;
void sdbout_init ();
void sdbout_symbol ();
void sdbout_types();
static void sdbout_typedefs ();
static void sdbout_syms ();
static void sdbout_one_type ();
static void sdbout_queue_anonymous_type ();
static void sdbout_dequeue_anonymous_types ();
static int plain_type_1 ();
/* Define the default sizes for various types. */
#ifndef CHAR_TYPE_SIZE
#define CHAR_TYPE_SIZE BITS_PER_UNIT
#endif
#ifndef SHORT_TYPE_SIZE
#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
#endif
#ifndef INT_TYPE_SIZE
#define INT_TYPE_SIZE BITS_PER_WORD
#endif
#ifndef LONG_TYPE_SIZE
#define LONG_TYPE_SIZE BITS_PER_WORD
#endif
#ifndef LONG_LONG_TYPE_SIZE
#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
#endif
#ifndef FLOAT_TYPE_SIZE
#define FLOAT_TYPE_SIZE BITS_PER_WORD
#endif
#ifndef DOUBLE_TYPE_SIZE
#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
#endif
#ifndef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
#endif
/* Random macros describing parts of SDB data. */
/* Put something here if lines get too long */
#define CONTIN
/* Default value of delimiter is ";". */
#ifndef SDB_DELIM
#define SDB_DELIM ";"
#endif
/* Maximum number of dimensions the assembler will allow. */
#ifndef SDB_MAX_DIM
#define SDB_MAX_DIM 4
#endif
#ifndef PUT_SDB_SCL
#define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
#endif
#ifndef PUT_SDB_INT_VAL
#define PUT_SDB_INT_VAL(a) fprintf (asm_out_file, "\t.val\t%d%s", (a), SDB_DELIM)
#endif
#ifndef PUT_SDB_VAL
#define PUT_SDB_VAL(a) \
( fputs ("\t.val\t", asm_out_file), \
output_addr_const (asm_out_file, (a)), \
fprintf (asm_out_file, SDB_DELIM))
#endif
#ifndef PUT_SDB_DEF
#define PUT_SDB_DEF(a) \
do { fprintf (asm_out_file, "\t.def\t"); \
ASM_OUTPUT_LABELREF (asm_out_file, a); \
fprintf (asm_out_file, SDB_DELIM); } while (0)
#endif
#ifndef PUT_SDB_PLAIN_DEF
#define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
#endif
#ifndef PUT_SDB_ENDEF
#define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
#endif
#ifndef PUT_SDB_TYPE
#define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
#endif
#ifndef PUT_SDB_SIZE
#define PUT_SDB_SIZE(a) fprintf(asm_out_file, "\t.size\t%d%s", a, SDB_DELIM)
#endif
#ifndef PUT_SDB_START_DIM
#define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
#endif
#ifndef PUT_SDB_NEXT_DIM
#define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
#endif
#ifndef PUT_SDB_LAST_DIM
#define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
#endif
#ifndef PUT_SDB_TAG
#define PUT_SDB_TAG(a) \
do { fprintf (asm_out_file, "\t.tag\t"); \
ASM_OUTPUT_LABELREF (asm_out_file, a); \
fprintf (asm_out_file, SDB_DELIM); } while (0)
#endif
#ifndef PUT_SDB_BLOCK_START
#define PUT_SDB_BLOCK_START(LINE) \
fprintf (asm_out_file, \
"\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
#endif
#ifndef PUT_SDB_BLOCK_END
#define PUT_SDB_BLOCK_END(LINE) \
fprintf (asm_out_file, \
"\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
#endif
#ifndef PUT_SDB_FUNCTION_START
#define PUT_SDB_FUNCTION_START(LINE) \
fprintf (asm_out_file, \
"\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
#endif
#ifndef PUT_SDB_FUNCTION_END
#define PUT_SDB_FUNCTION_END(LINE) \
fprintf (asm_out_file, \
"\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
#endif
#ifndef PUT_SDB_EPILOGUE_END
#define PUT_SDB_EPILOGUE_END(NAME) \
do { fprintf (asm_out_file, "\t.def\t"); \
ASM_OUTPUT_LABELREF (asm_out_file, NAME); \
fprintf (asm_out_file, \
"%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \
SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0)
#endif
#ifndef SDB_GENERATE_FAKE
#define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
sprintf ((BUFFER), ".%dfake", (NUMBER));
#endif
/* Return the sdb tag identifier string for TYPE
if TYPE has already been defined; otherwise return a null pointer. */
#define KNOWN_TYPE_TAG(type) (char *)(TYPE_SYMTAB_ADDRESS (type))
/* Set the sdb tag identifier string for TYPE to NAME. */
#define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
(TYPE_SYMTAB_ADDRESS (TYPE) = (int)(NAME))
/* Return the name (a string) of the struct, union or enum tag
described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
#define TAG_NAME(link) \
(((link) && TREE_PURPOSE ((link)) \
&& IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
/* Ensure we don't output a negative line number. */
#define MAKE_LINE_SAFE(line) \
if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1
/* Set up for SDB output at the start of compilation. */
void
sdbout_init (asm_file, input_file_name, syms)
FILE *asm_file;
char *input_file_name;
tree syms;
{
#if 0 /* Nothing need be output for the predefined types. */
/* Get all permanent types that have typedef names,
and output them all, except for those already output. */
sdbout_typedefs (syms);
#endif
}
#if 0
/* return the tag identifier for type
*/
char *
tag_of_ru_type (type,link)
tree type,link;
{
if (TYPE_SYMTAB_ADDRESS (type))
return (char *)TYPE_SYMTAB_ADDRESS (type);
if (link && TREE_PURPOSE (link)
&& IDENTIFIER_POINTER (TREE_PURPOSE (link)))
TYPE_SYMTAB_ADDRESS (type)
= (int)IDENTIFIER_POINTER (TREE_PURPOSE (link));
else
return (char *) TYPE_SYMTAB_ADDRESS (type);
}
#endif
/* Return a unique string to name an anonymous type. */
static char *
gen_fake_label ()
{
char label[10];
char *labelstr;
SDB_GENERATE_FAKE (label, unnamed_struct_number);
unnamed_struct_number++;
labelstr = (char *) permalloc (strlen (label) + 1);
strcpy (labelstr, label);
return labelstr;
}
/* Return the number which describes TYPE for SDB.
For pointers, etc., this function is recursive.
Each record, union or enumeral type must already have had a
tag number output. */
/* The number is given by d6d5d4d3d2d1bbbb
where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
Thus, char *foo () has bbbb=T_CHAR
d1=D_FCN
d2=D_PTR
N_BTMASK= 017 1111 basic type field.
N_TSHIFT= 2 derived type shift
N_BTSHFT= 4 Basic type shift */
/* Produce the number that describes a pointer, function or array type.
PREV is the number describing the target, value or element type.
DT_type describes how to transform that type. */
#define PUSH_DERIVED_LEVEL(DT_type,PREV) \
((((PREV)&~N_BTMASK)<<N_TSHIFT)|(DT_type<<N_BTSHFT)|(PREV&N_BTMASK))
/* Number of elements used in sdb_dims. */
static int sdb_n_dims = 0;
/* Table of array dimensions of current type. */
static int sdb_dims[SDB_MAX_DIM];
/* Size of outermost array currently being processed. */
static int sdb_type_size = -1;
static int
plain_type (type)
tree type;
{
int val = plain_type_1 (type);
/* If we have already saved up some array dimensions, print them now. */
if (sdb_n_dims > 0)
{
int i;
PUT_SDB_START_DIM;
for (i = sdb_n_dims - 1; i > 0; i--)
PUT_SDB_NEXT_DIM (sdb_dims[i]);
PUT_SDB_LAST_DIM (sdb_dims[0]);
sdb_n_dims = 0;
sdb_type_size = int_size_in_bytes (type);
/* Don't kill sdb if type is not laid out or has variable size. */
if (sdb_type_size < 0)
sdb_type_size = 0;
}
/* If we have computed the size of an array containing this type,
print it now. */
if (sdb_type_size >= 0)
{
PUT_SDB_SIZE (sdb_type_size);
sdb_type_size = -1;
}
return val;
}
static void
sdbout_record_type_name (type)
tree type;
{
char *name = 0;
int no_name;
if (KNOWN_TYPE_TAG (type))
return;
if (TYPE_NAME (type) != 0)
{
tree t = 0;
/* Find the IDENTIFIER_NODE for the type name. */
if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
{
t = TYPE_NAME (type);
}
#if 1 /* As a temprary hack, use typedef names for C++ only. */
else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& TYPE_LANG_SPECIFIC (type))
{
t = DECL_NAME (TYPE_NAME (type));
}
#endif
/* Now get the name as a string, or invent one. */
if (t != 0)
name = IDENTIFIER_POINTER (t);
}
no_name = (name == 0 || *name == 0);
if (no_name)
name = gen_fake_label ();
SET_KNOWN_TYPE_TAG (type, name);
#ifdef SDB_ALLOW_FORWARD_REFERENCES
if (no_name)
sdbout_queue_anonymous_type (type);
#endif
}
static int
plain_type_1 (type)
tree type;
{
if (type == 0)
type = void_type_node;
if (type == error_mark_node)
type = integer_type_node;
type = TYPE_MAIN_VARIANT (type);
switch (TREE_CODE (type))
{
case VOID_TYPE:
return T_VOID;
case INTEGER_TYPE:
{
int size = int_size_in_bytes (type) * BITS_PER_UNIT;
if (size == CHAR_TYPE_SIZE)
return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
if (size == SHORT_TYPE_SIZE)
return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
if (size == INT_TYPE_SIZE)
return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
return 0;
}
case REAL_TYPE:
{
int size = int_size_in_bytes (type) * BITS_PER_UNIT;
if (size == FLOAT_TYPE_SIZE)
return T_FLOAT;
if (size == DOUBLE_TYPE_SIZE)
return T_DOUBLE;
return 0;
}
case ARRAY_TYPE:
{
int m;
m = plain_type_1 (TREE_TYPE (type));
if (sdb_n_dims < SDB_MAX_DIM)
sdb_dims[sdb_n_dims++]
= (TYPE_DOMAIN (type)
? TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1
: 0);
return PUSH_DERIVED_LEVEL (DT_ARY, m);
}
case RECORD_TYPE:
case UNION_TYPE:
case ENUMERAL_TYPE:
{
char *tag;
#ifdef SDB_ALLOW_FORWARD_REFERENCES
sdbout_record_type_name (type);
#endif
#ifndef SDB_ALLOW_UNKNOWN_REFERENCES
if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
#ifdef SDB_ALLOW_FORWARD_REFERENCES
|| TYPE_MODE (type) != VOIDmode
#endif
)
#endif
{
/* Output the referenced structure tag name
only if the .def has already been finished.
At least on 386, the Unix assembler
cannot handle forward references to tags. */
/* But the 88100, it requires them, sigh... */
/* And the MIPS requires unknown refs as well... */
tag = KNOWN_TYPE_TAG (type);
PUT_SDB_TAG (tag);
/* These 3 lines used to follow the close brace.
However, a size of 0 without a tag implies a tag of 0,
so if we don't know a tag, we can't mention the size. */
sdb_type_size = int_size_in_bytes (type);
if (sdb_type_size < 0)
sdb_type_size = 0;
}
return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
: (TREE_CODE (type) == UNION_TYPE) ? T_UNION
: T_ENUM);
}
case POINTER_TYPE:
case REFERENCE_TYPE:
{
int m = plain_type_1 (TREE_TYPE (type));
return PUSH_DERIVED_LEVEL (DT_PTR, m);
}
case FUNCTION_TYPE:
case METHOD_TYPE:
{
int m = plain_type_1 (TREE_TYPE (type));
return PUSH_DERIVED_LEVEL (DT_FCN, m);
}
default:
return 0;
}
}
/* Output the symbols defined in block number DO_BLOCK.
Set NEXT_BLOCK_NUMBER to 0 before calling.
This function works by walking the tree structure of blocks,
counting blocks until it finds the desired block. */
static int do_block = 0;
static int next_block_number;
static void
sdbout_block (block)
register tree block;
{
while (block)
{
/* Ignore blocks never expanded or otherwise marked as real. */
if (TREE_USED (block))
{
/* When we reach the specified block, output its symbols. */
if (next_block_number == do_block)
{
sdbout_syms (BLOCK_VARS (block));
}
/* If we are past the specified block, stop the scan. */
if (next_block_number > do_block)
return;
next_block_number++;
/* Scan the blocks within this block. */
sdbout_block (BLOCK_SUBBLOCKS (block));
}
block = BLOCK_CHAIN (block);
}
}
/* Call sdbout_symbol on each decl in the chain SYMS. */
static void
sdbout_syms (syms)
tree syms;
{
while (syms)
{
if (TREE_CODE (syms) != LABEL_DECL)
sdbout_symbol (syms, 1);
syms = TREE_CHAIN (syms);
}
}
/* Output SDB information for a symbol described by DECL.
LOCAL is nonzero if the symbol is not file-scope. */
void
sdbout_symbol (decl, local)
tree decl;
int local;
{
int letter = 0;
tree type = TREE_TYPE (decl);
tree context = NULL_TREE;
rtx value;
int regno = -1;
char *name;
sdbout_one_type (type);
#if 0 /* This loses when functions are marked to be ignored,
which happens in the C++ front end. */
if (DECL_IGNORED_P (decl))
return;
#endif
switch (TREE_CODE (decl))
{
case CONST_DECL:
/* Enum values are defined by defining the enum type. */
return;
case FUNCTION_DECL:
/* Don't mention a nested function under its parent. */
context = decl_function_context (decl);
if (context == current_function_decl)
return;
if (DECL_EXTERNAL (decl))
return;
if (GET_CODE (DECL_RTL (decl)) != MEM
|| GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
return;
PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
break;
case TYPE_DECL:
/* Done with tagged types. */
if (DECL_NAME (decl) == 0)
return;
if (DECL_IGNORED_P (decl))
return;
/* Output typedef name. */
PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
PUT_SDB_SCL (C_TPDEF);
break;
case PARM_DECL:
/* Parm decls go in their own separate chains
and are output by sdbout_reg_parms and sdbout_parms. */
abort ();
case VAR_DECL:
/* Don't mention a variable that is external.
Let the file that defines it describe it. */
if (DECL_EXTERNAL (decl))
return;
/* Ignore __FUNCTION__, etc. */
if (DECL_IGNORED_P (decl))
return;
/* If there was an error in the declaration, don't dump core
if there is no RTL associated with the variable doesn't
exist. */
if (DECL_RTL (decl) == 0)
return;
DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX);
#ifdef LEAF_REG_REMAP
if (leaf_function)
leaf_renumber_regs_insn (DECL_RTL (decl));
#endif
value = DECL_RTL (decl);
/* Don't mention a variable at all
if it was completely optimized into nothingness.
If DECL was from an inline function, then its rtl
is not identically the rtl that was used in this
particular compilation. */
if (GET_CODE (value) == REG)
{
regno = REGNO (DECL_RTL (decl));
if (regno >= FIRST_PSEUDO_REGISTER)
return;
}
else if (GET_CODE (value) == SUBREG)
{
int offset = 0;
while (GET_CODE (value) == SUBREG)
{
offset += SUBREG_WORD (value);
value = SUBREG_REG (value);
}
if (GET_CODE (value) == REG)
{
regno = REGNO (value);
if (regno >= FIRST_PSEUDO_REGISTER)
return;
regno += offset;
}
alter_subreg (DECL_RTL (decl));
value = DECL_RTL (decl);
}
/* Emit any structure, union, or enum type that has not been output.
This occurs for tag-less structs (et al) used to declare variables
within functions. */
if (TREE_CODE (type) == ENUMERAL_TYPE
|| TREE_CODE (type) == RECORD_TYPE
|| TREE_CODE (type) == UNION_TYPE)
{
if (TYPE_SIZE (type) != 0 /* not a forward reference */
&& KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
sdbout_one_type (type);
}
/* Defer SDB information for top-level initialized variables! */
if (! local
&& GET_CODE (value) == MEM
&& DECL_INITIAL (decl))
return;
/* Record the name for, starting a symtab entry. */
name = IDENTIFIER_POINTER (DECL_NAME (decl));
if (GET_CODE (value) == MEM
&& GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
{
PUT_SDB_DEF (name);
if (TREE_PUBLIC (decl))
{
PUT_SDB_VAL (XEXP (value, 0));
PUT_SDB_SCL (C_EXT);
}
else
{
PUT_SDB_VAL (XEXP (value, 0));
PUT_SDB_SCL (C_STAT);
}
}
else if (regno >= 0)
{
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
PUT_SDB_SCL (C_REG);
}
else if (GET_CODE (value) == MEM
&& (GET_CODE (XEXP (value, 0)) == MEM
|| (GET_CODE (XEXP (value, 0)) == REG
&& REGNO (XEXP (value, 0)) != FRAME_POINTER_REGNUM
&& REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
/* If the value is indirect by memory or by a register
that isn't the frame pointer
then it means the object is variable-sized and address through
that register or stack slot. COFF has no way to represent this
so all we can do is output the variable as a pointer. */
{
PUT_SDB_DEF (name);
if (GET_CODE (XEXP (value, 0)) == REG)
{
PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
PUT_SDB_SCL (C_REG);
}
else
{
/* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
(CONST_INT...)))).
We want the value of that CONST_INT. */
/* Encore compiler hates a newline in a macro arg, it seems. */
PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
(XEXP (XEXP (value, 0), 0)));
PUT_SDB_SCL (C_AUTO);
}
type = build_pointer_type (TREE_TYPE (decl));
}
else if (GET_CODE (value) == MEM
&& GET_CODE (XEXP (value, 0)) == PLUS
&& GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
&& GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
{
/* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))).
We want the value of that CONST_INT. */
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
PUT_SDB_SCL (C_AUTO);
}
else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST)
{
/* Handle an obscure case which can arise when optimizing and
when there are few available registers. (This is *always*
the case for i386/i486 targets). The DECL_RTL looks like
(MEM (CONST ...)) even though this variable is a local `auto'
or a local `register' variable. In effect, what has happened
is that the reload pass has seen that all assignments and
references for one such a local variable can be replaced by
equivalent assignments and references to some static storage
variable, thereby avoiding the need for a register. In such
cases we're forced to lie to debuggers and tell them that
this variable was itself `static'. */
PUT_SDB_DEF (name);
PUT_SDB_VAL (XEXP (XEXP (value, 0), 0));
PUT_SDB_SCL (C_STAT);
}
else
{
/* It is something we don't know how to represent for SDB. */
return;
}
break;
}
PUT_SDB_TYPE (plain_type (type));
PUT_SDB_ENDEF;
}
/* Output SDB information for a top-level initialized variable
that has been delayed. */
void
sdbout_toplevel_data (decl)
tree decl;
{
tree type = TREE_TYPE (decl);
if (DECL_IGNORED_P (decl))
return;
if (! (TREE_CODE (decl) == VAR_DECL
&& GET_CODE (DECL_RTL (decl)) == MEM
&& DECL_INITIAL (decl)))
abort ();
PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
if (TREE_PUBLIC (decl))
{
PUT_SDB_SCL (C_EXT);
}
else
{
PUT_SDB_SCL (C_STAT);
}
PUT_SDB_TYPE (plain_type (type));
PUT_SDB_ENDEF;
}
#ifdef SDB_ALLOW_FORWARD_REFERENCES
/* Machinery to record and output anonymous types. */
static tree anonymous_types;
static void
sdbout_queue_anonymous_type (type)
tree type;
{
anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types);
}
static void
sdbout_dequeue_anonymous_types ()
{
register tree types, link;
while (anonymous_types)
{
types = nreverse (anonymous_types);
anonymous_types = NULL_TREE;
for (link = types; link; link = TREE_CHAIN (link))
{
register tree type = TREE_VALUE (link);
if (type && ! TREE_ASM_WRITTEN (type))
sdbout_one_type (type);
}
}
}
#endif
/* Given a chain of ..._TYPE nodes, all of which have names,
output definitions of those names, as typedefs. */
void
sdbout_types (types)
register tree types;
{
register tree link;
for (link = types; link; link = TREE_CHAIN (link))
sdbout_one_type (link);
#ifdef SDB_ALLOW_FORWARD_REFERENCES
sdbout_dequeue_anonymous_types ();
#endif
}
static void
sdbout_type (type)
tree type;
{
register tree tem;
if (type == error_mark_node)
type = integer_type_node;
PUT_SDB_TYPE (plain_type (type));
}
/* Output types of the fields of type TYPE, if they are structs.
Formerly did not chase through pointer types, since that could be circular.
They must come before TYPE, since forward refs are not allowed.
Now james@bigtex.cactus.org says to try them. */
static void
sdbout_field_types (type)
tree type;
{
tree tail;
for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
if (TREE_CODE (TREE_TYPE (tail)) == POINTER_TYPE)
sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
else
sdbout_one_type (TREE_TYPE (tail));
}
/* Use this to put out the top level defined record and union types
for later reference. If this is a struct with a name, then put that
name out. Other unnamed structs will have .xxfake labels generated so
that they may be referred to later.
The label will be stored in the KNOWN_TYPE_TAG slot of a type.
It may NOT be called recursively. */
static void
sdbout_one_type (type)
tree type;
{
text_section ();
switch (TREE_CODE (type))
{
case RECORD_TYPE:
case UNION_TYPE:
case ENUMERAL_TYPE:
type = TYPE_MAIN_VARIANT (type);
/* Don't output a type twice. */
if (TREE_ASM_WRITTEN (type))
/* James said test TREE_ASM_BEING_WRITTEN here. */
return;
/* Output nothing if type is not yet defined. */
if (TYPE_SIZE (type) == 0)
return;
TREE_ASM_WRITTEN (type) = 1;
#if 1
/* This is reputed to cause trouble with the following case,
but perhaps checking TYPE_SIZE above will fix it. */
/* Here is a test case:
struct foo {
struct badstr *bbb;
} forwardref;
typedef struct intermediate {
int aaaa;
} intermediate_ref;
typedef struct badstr {
int ccccc;
} badtype; */
#if 0
TREE_ASM_BEING_WRITTEN (type) = 1;
#endif
/* This change, which ought to make better output,
used to make the COFF assembler unhappy.
Changes involving KNOWN_TYPE_TAG may fix the problem. */
/* Before really doing anything, output types we want to refer to. */
/* Note that in version 1 the following two lines
are not used if forward references are in use. */
if (TREE_CODE (type) != ENUMERAL_TYPE)
sdbout_field_types (type);
#if 0
TREE_ASM_WRITTEN (type) = 1;
#endif
#endif
/* Output a structure type. */
{
int size = int_size_in_bytes (type);
int member_scl;
tree tem;
int i, n_baseclasses = 0;
/* Record the type tag, but not in its permanent place just yet. */
sdbout_record_type_name (type);
PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
switch (TREE_CODE (type))
{
case UNION_TYPE:
PUT_SDB_SCL (C_UNTAG);
PUT_SDB_TYPE (T_UNION);
member_scl = C_MOU;
break;
case RECORD_TYPE:
PUT_SDB_SCL (C_STRTAG);
PUT_SDB_TYPE (T_STRUCT);
member_scl = C_MOS;
break;
case ENUMERAL_TYPE:
PUT_SDB_SCL (C_ENTAG);
PUT_SDB_TYPE (T_ENUM);
member_scl = C_MOE;
break;
}
PUT_SDB_SIZE (size);
PUT_SDB_ENDEF;
/* Print out the base class information with fields
named after the types they hold. */
if (TYPE_BINFO (type)
&& TYPE_BINFO_BASETYPES (type))
n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
for (i = 0; i < n_baseclasses; i++)
{
tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i);
tree child_type = BINFO_TYPE (child);
tree child_type_name;
if (TYPE_NAME (child_type) == 0)
continue;
if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
child_type_name = TYPE_NAME (child_type);
else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
child_type_name = DECL_NAME (TYPE_NAME (child_type));
else
continue;
CONTIN;
PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
PUT_SDB_INT_VAL (TREE_INT_CST_LOW (BINFO_OFFSET (child)));
PUT_SDB_SCL (member_scl);
sdbout_type (BINFO_TYPE (child));
PUT_SDB_ENDEF;
}
/* output the individual fields */
if (TREE_CODE (type) == ENUMERAL_TYPE)
for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
{
PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem)));
PUT_SDB_SCL (C_MOE);
PUT_SDB_TYPE (T_MOE);
PUT_SDB_ENDEF;
}
else /* record or union type */
for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
/* Output the name, type, position (in bits), size (in bits)
of each field. */
/* Omit here the nameless fields that are used to skip bits.
Also omit fields with variable size or position.
Also omit non FIELD_DECL nodes that GNU C++ may put here. */
if (TREE_CODE (tem) == FIELD_DECL
&& DECL_NAME (tem) != 0
&& TREE_CODE (DECL_SIZE (tem)) == INTEGER_CST
&& TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST)
{
CONTIN;
PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (tem)));
if (DECL_BIT_FIELD_TYPE (tem))
{
PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)));
PUT_SDB_SCL (C_FIELD);
sdbout_type (DECL_BIT_FIELD_TYPE (tem));
PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem)));
}
else
{
PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))
/ BITS_PER_UNIT);
PUT_SDB_SCL (member_scl);
sdbout_type (TREE_TYPE (tem));
}
PUT_SDB_ENDEF;
}
/* output end of a structure,union, or enumeral definition */
PUT_SDB_PLAIN_DEF ("eos");
PUT_SDB_INT_VAL (size);
PUT_SDB_SCL (C_EOS);
PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
PUT_SDB_SIZE (size);
PUT_SDB_ENDEF;
break;
}
}
}
/* The following two functions output definitions of function parameters.
Each parameter gets a definition locating it in the parameter list.
Each parameter that is a register variable gets a second definition
locating it in the register.
Printing or argument lists in gdb uses the definitions that
locate in the parameter list. But reference to the variable in
expressions uses preferentially the definition as a register. */
/* Output definitions, referring to storage in the parmlist,
of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
static void
sdbout_parms (parms)
tree parms;
{
for (; parms; parms = TREE_CHAIN (parms))
if (DECL_NAME (parms))
{
int current_sym_value = 0;
char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
if (name == 0 || *name == 0)
name = gen_fake_label ();
/* Perform any necessary register eliminations on the parameter's rtl,
so that the debugging output will be accurate. */
DECL_INCOMING_RTL (parms) =
eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX);
if (PARM_PASSED_IN_MEMORY (parms))
{
rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
tree type;
/* ??? Here we assume that the parm address is indexed
off the frame pointer or arg pointer.
If that is not true, we produce meaningless results,
but do not crash. */
if (GET_CODE (addr) == PLUS
&& GET_CODE (XEXP (addr, 1)) == CONST_INT)
current_sym_value = INTVAL (XEXP (addr, 1));
else
current_sym_value = 0;
if (GET_CODE (DECL_RTL (parms)) == REG
&& REGNO (DECL_RTL (parms)) >= 0
&& REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
type = DECL_ARG_TYPE (parms);
else
{
int original_sym_value = current_sym_value;
/* This is the case where the parm is passed as an int or
double and it is converted to a char, short or float
and stored back in the parmlist. In this case, describe
the parm with the variable's declared type, and adjust
the address if the least significant bytes (which we are
using) are not the first ones. */
#if BYTES_BIG_ENDIAN
if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
current_sym_value +=
(GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
- GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
#endif
if (GET_CODE (DECL_RTL (parms)) == MEM
&& GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
&& (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
== CONST_INT)
&& (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
== current_sym_value))
type = TREE_TYPE (parms);
else
{
current_sym_value = original_sym_value;
type = DECL_ARG_TYPE (parms);
}
}
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
PUT_SDB_SCL (C_ARG);
PUT_SDB_TYPE (plain_type (type));
PUT_SDB_ENDEF;
}
else if (GET_CODE (DECL_RTL (parms)) == REG)
{
rtx best_rtl;
/* Parm passed in registers and lives in registers or nowhere. */
/* If parm lives in a register, use that register;
pretend the parm was passed there. It would be more consistent
to describe the register where the parm was passed,
but in practice that register usually holds something else. */
if (REGNO (DECL_RTL (parms)) >= 0
&& REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
best_rtl = DECL_RTL (parms);
/* If the parm lives nowhere,
use the register where it was passed. */
else
best_rtl = DECL_INCOMING_RTL (parms);
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
PUT_SDB_SCL (C_REGPARM);
PUT_SDB_TYPE (plain_type (TREE_TYPE (parms), 0));
PUT_SDB_ENDEF;
}
else if (GET_CODE (DECL_RTL (parms)) == MEM
&& XEXP (DECL_RTL (parms), 0) != const0_rtx)
{
/* Parm was passed in registers but lives on the stack. */
/* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
in which case we want the value of that CONST_INT,
or (MEM (REG ...)) or (MEM (MEM ...)),
in which case we use a value of zero. */
if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
|| GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
current_sym_value = 0;
else
current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
/* Again, this assumes the offset is based on the arg pointer. */
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
XEXP (DECL_RTL (parms), 0)));
PUT_SDB_SCL (C_ARG);
PUT_SDB_TYPE (plain_type (TREE_TYPE (parms), 0));
PUT_SDB_ENDEF;
}
}
}
/* Output definitions for the places where parms live during the function,
when different from where they were passed, when the parms were passed
in memory.
It is not useful to do this for parms passed in registers
that live during the function in different registers, because it is
impossible to look in the passed register for the passed value,
so we use the within-the-function register to begin with.
PARMS is a chain of PARM_DECL nodes. */
static void
sdbout_reg_parms (parms)
tree parms;
{
for (; parms; parms = TREE_CHAIN (parms))
if (DECL_NAME (parms))
{
char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
/* Report parms that live in registers during the function
but were passed in memory. */
if (GET_CODE (DECL_RTL (parms)) == REG
&& REGNO (DECL_RTL (parms)) >= 0
&& REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
&& PARM_PASSED_IN_MEMORY (parms))
{
if (name == 0 || *name == 0)
name = gen_fake_label ();
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
PUT_SDB_SCL (C_REG);
PUT_SDB_TYPE (plain_type (TREE_TYPE (parms), 0));
PUT_SDB_ENDEF;
}
/* Report parms that live in memory but not where they were passed. */
else if (GET_CODE (DECL_RTL (parms)) == MEM
&& GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
&& GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
&& PARM_PASSED_IN_MEMORY (parms)
&& ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
{
#if 0 /* ??? It is not clear yet what should replace this. */
int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
/* A parm declared char is really passed as an int,
so it occupies the least significant bytes.
On a big-endian machine those are not the low-numbered ones. */
#if BYTES_BIG_ENDIAN
if (offset != -1 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
- GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
#endif
if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
#endif
{
if (name == 0 || *name == 0)
name = gen_fake_label ();
PUT_SDB_DEF (name);
PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
(XEXP (DECL_RTL (parms), 0)));
PUT_SDB_SCL (C_AUTO);
PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
PUT_SDB_ENDEF;
}
}
}
}
/* Describe the beginning of an internal block within a function.
Also output descriptions of variables defined in this block.
N is the number of the block, by order of beginning, counting from 1,
and not counting the outermost (function top-level) block.
The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
if the count starts at 0 for the outermost one. */
void
sdbout_begin_block (file, line, n)
FILE *file;
int line;
int n;
{
tree decl = current_function_decl;
MAKE_LINE_SAFE (line);
PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
if (n == 1)
{
/* Include the outermost BLOCK's variables in block 1. */
next_block_number = 0;
do_block = 0;
sdbout_block (DECL_INITIAL (decl));
}
/* If -g1, suppress all the internal symbols of functions
except for arguments. */
if (debug_info_level != DINFO_LEVEL_TERSE)
{
next_block_number = 0;
do_block = n;
sdbout_block (DECL_INITIAL (decl));
}
#ifdef SDB_ALLOW_FORWARD_REFERENCES
sdbout_dequeue_anonymous_types ();
#endif
}
/* Describe the end line-number of an internal block within a function. */
void
sdbout_end_block (file, line)
FILE *file;
int line;
{
MAKE_LINE_SAFE (line);
PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
}
/* Output sdb info for the current function name.
Called from assemble_start_function. */
void
sdbout_mark_begin_function ()
{
sdbout_symbol (current_function_decl, 0);
}
/* Called at beginning of function body (after prologue).
Record the function's starting line number, so we can output
relative line numbers for the other lines.
Describe beginning of outermost block.
Also describe the parameter list. */
void
sdbout_begin_function (line)
int line;
{
sdb_begin_function_line = line - 1;
PUT_SDB_FUNCTION_START (line);
sdbout_parms (DECL_ARGUMENTS (current_function_decl));
sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
}
/* Called at end of function (before epilogue).
Describe end of outermost block. */
void
sdbout_end_function (line)
int line;
{
#ifdef SDB_ALLOW_FORWARD_REFERENCES
sdbout_dequeue_anonymous_types ();
#endif
MAKE_LINE_SAFE (line);
PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
/* Indicate we are between functions, for line-number output. */
sdb_begin_function_line = -1;
}
/* Output sdb info for the absolute end of a function.
Called after the epilogue is output. */
void
sdbout_end_epilogue ()
{
char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
PUT_SDB_EPILOGUE_END (name);
}
/* Output sdb info for the given label. Called only if LABEL_NAME (insn)
is present. */
void
sdbout_label (insn)
register rtx insn;
{
PUT_SDB_DEF (LABEL_NAME (insn));
PUT_SDB_VAL (insn);
PUT_SDB_SCL (C_LABEL);
PUT_SDB_TYPE (T_NULL);
PUT_SDB_ENDEF;
}
#endif /* SDB_DEBUGGING_INFO */
|