aboutsummaryrefslogtreecommitdiff
path: root/bfd/bfd.c
blob: e4c733c86fdd5f655076852d9778aec3009c1f65 (plain)
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
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
/* Generic BFD library interface and support routines.
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   Free Software Foundation, Inc.
   Written by Cygnus Support.

   This file is part of BFD, the Binary File Descriptor library.

   This program 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 of the License, or
   (at your option) any later version.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

/*
SECTION
	<<typedef bfd>>

	A BFD has type <<bfd>>; objects of this type are the
	cornerstone of any application using BFD. Using BFD
	consists of making references though the BFD and to data in the BFD.

	Here is the structure that defines the type <<bfd>>.  It
	contains the major data about the file and pointers
	to the rest of the data.

CODE_FRAGMENT
.
.struct bfd
.{
.  {* A unique identifier of the BFD  *}
.  unsigned int id;
.
.  {* The filename the application opened the BFD with.  *}
.  const char *filename;
.
.  {* A pointer to the target jump table.  *}
.  const struct bfd_target *xvec;
.
.  {* The IOSTREAM, and corresponding IO vector that provide access
.     to the file backing the BFD.  *}
.  void *iostream;
.  const struct bfd_iovec *iovec;
.
.  {* Is the file descriptor being cached?  That is, can it be closed as
.     needed, and re-opened when accessed later?  *}
.  bfd_boolean cacheable;
.
.  {* Marks whether there was a default target specified when the
.     BFD was opened. This is used to select which matching algorithm
.     to use to choose the back end.  *}
.  bfd_boolean target_defaulted;
.
.  {* The caching routines use these to maintain a
.     least-recently-used list of BFDs.  *}
.  struct bfd *lru_prev, *lru_next;
.
.  {* When a file is closed by the caching routines, BFD retains
.     state information on the file here...  *}
.  ufile_ptr where;
.
.  {* ... and here: (``once'' means at least once).  *}
.  bfd_boolean opened_once;
.
.  {* Set if we have a locally maintained mtime value, rather than
.     getting it from the file each time.  *}
.  bfd_boolean mtime_set;
.
.  {* File modified time, if mtime_set is TRUE.  *}
.  long mtime;
.
.  {* Reserved for an unimplemented file locking extension.  *}
.  int ifd;
.
.  {* The format which belongs to the BFD. (object, core, etc.)  *}
.  bfd_format format;
.
.  {* The direction with which the BFD was opened.  *}
.  enum bfd_direction
.    {
.      no_direction = 0,
.      read_direction = 1,
.      write_direction = 2,
.      both_direction = 3
.    }
.  direction;
.
.  {* Format_specific flags.  *}
.  flagword flags;
.
.  {* Currently my_archive is tested before adding origin to
.     anything. I believe that this can become always an add of
.     origin, with origin set to 0 for non archive files.  *}
.  ufile_ptr origin;
.
.  {* Remember when output has begun, to stop strange things
.     from happening.  *}
.  bfd_boolean output_has_begun;
.
.  {* A hash table for section names.  *}
.  struct bfd_hash_table section_htab;
.
.  {* Pointer to linked list of sections.  *}
.  struct bfd_section *sections;
.
.  {* The last section on the section list.  *}
.  struct bfd_section *section_last;
.
.  {* The number of sections.  *}
.  unsigned int section_count;
.
.  {* Stuff only useful for object files:
.     The start address.  *}
.  bfd_vma start_address;
.
.  {* Used for input and output.  *}
.  unsigned int symcount;
.
.  {* Symbol table for output BFD (with symcount entries).  *}
.  struct bfd_symbol  **outsymbols;
.
.  {* Used for slurped dynamic symbol tables.  *}
.  unsigned int dynsymcount;
.
.  {* Pointer to structure which contains architecture information.  *}
.  const struct bfd_arch_info *arch_info;
.
.  {* Flag set if symbols from this BFD should not be exported.  *}
.  bfd_boolean no_export;
.
.  {* Stuff only useful for archives.  *}
.  void *arelt_data;
.  struct bfd *my_archive;      {* The containing archive BFD.  *}
.  struct bfd *next;            {* The next BFD in the archive.  *}
.  struct bfd *archive_head;    {* The first BFD in the archive.  *}
.  bfd_boolean has_armap;
.
.  {* A chain of BFD structures involved in a link.  *}
.  struct bfd *link_next;
.
.  {* A field used by _bfd_generic_link_add_archive_symbols.  This will
.     be used only for archive elements.  *}
.  int archive_pass;
.
.  {* Used by the back end to hold private data.  *}
.  union
.    {
.      struct aout_data_struct *aout_data;
.      struct artdata *aout_ar_data;
.      struct _oasys_data *oasys_obj_data;
.      struct _oasys_ar_data *oasys_ar_data;
.      struct coff_tdata *coff_obj_data;
.      struct pe_tdata *pe_obj_data;
.      struct xcoff_tdata *xcoff_obj_data;
.      struct ecoff_tdata *ecoff_obj_data;
.      struct ieee_data_struct *ieee_data;
.      struct ieee_ar_data_struct *ieee_ar_data;
.      struct srec_data_struct *srec_data;
.      struct ihex_data_struct *ihex_data;
.      struct tekhex_data_struct *tekhex_data;
.      struct elf_obj_tdata *elf_obj_data;
.      struct nlm_obj_tdata *nlm_obj_data;
.      struct bout_data_struct *bout_data;
.      struct mmo_data_struct *mmo_data;
.      struct sun_core_struct *sun_core_data;
.      struct sco5_core_struct *sco5_core_data;
.      struct trad_core_struct *trad_core_data;
.      struct som_data_struct *som_data;
.      struct hpux_core_struct *hpux_core_data;
.      struct hppabsd_core_struct *hppabsd_core_data;
.      struct sgi_core_struct *sgi_core_data;
.      struct lynx_core_struct *lynx_core_data;
.      struct osf_core_struct *osf_core_data;
.      struct cisco_core_struct *cisco_core_data;
.      struct versados_data_struct *versados_data;
.      struct netbsd_core_struct *netbsd_core_data;
.      struct mach_o_data_struct *mach_o_data;
.      struct mach_o_fat_data_struct *mach_o_fat_data;
.      struct bfd_pef_data_struct *pef_data;
.      struct bfd_pef_xlib_data_struct *pef_xlib_data;
.      struct bfd_sym_data_struct *sym_data;
.      void *any;
.    }
.  tdata;
.
.  {* Used by the application to hold private data.  *}
.  void *usrdata;
.
.  {* Where all the allocated stuff under this BFD goes.  This is a
.     struct objalloc *, but we use void * to avoid requiring the inclusion
.     of objalloc.h.  *}
.  void *memory;
.};
.
*/

#include "sysdep.h"
#include <stdarg.h>
#include "bfd.h"
#include "bfdver.h"
#include "libiberty.h"
#include "demangle.h"
#include "safe-ctype.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "coff/internal.h"
#include "coff/sym.h"
#include "libcoff.h"
#include "libecoff.h"
#undef obj_symbols
#include "elf-bfd.h"

#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif


/* provide storage for subsystem, stack and heap data which may have been
   passed in on the command line.  Ld puts this data into a bfd_link_info
   struct which ultimately gets passed in to the bfd.  When it arrives, copy
   it to the following struct so that the data will be available in coffcode.h
   where it is needed.  The typedef's used are defined in bfd.h */

/*
SECTION
	Error reporting

	Most BFD functions return nonzero on success (check their
	individual documentation for precise semantics).  On an error,
	they call <<bfd_set_error>> to set an error condition that callers
	can check by calling <<bfd_get_error>>.
        If that returns <<bfd_error_system_call>>, then check
	<<errno>>.

	The easiest way to report a BFD error to the user is to
	use <<bfd_perror>>.

SUBSECTION
	Type <<bfd_error_type>>

	The values returned by <<bfd_get_error>> are defined by the
	enumerated type <<bfd_error_type>>.

CODE_FRAGMENT
.
.typedef enum bfd_error
.{
.  bfd_error_no_error = 0,
.  bfd_error_system_call,
.  bfd_error_invalid_target,
.  bfd_error_wrong_format,
.  bfd_error_wrong_object_format,
.  bfd_error_invalid_operation,
.  bfd_error_no_memory,
.  bfd_error_no_symbols,
.  bfd_error_no_armap,
.  bfd_error_no_more_archived_files,
.  bfd_error_malformed_archive,
.  bfd_error_file_not_recognized,
.  bfd_error_file_ambiguously_recognized,
.  bfd_error_no_contents,
.  bfd_error_nonrepresentable_section,
.  bfd_error_no_debug_section,
.  bfd_error_bad_value,
.  bfd_error_file_truncated,
.  bfd_error_file_too_big,
.  bfd_error_on_input,
.  bfd_error_invalid_error_code
.}
.bfd_error_type;
.
*/

static bfd_error_type bfd_error = bfd_error_no_error;
static bfd *input_bfd = NULL;
static bfd_error_type input_error = bfd_error_no_error;

const char *const bfd_errmsgs[] =
{
  N_("No error"),
  N_("System call error"),
  N_("Invalid bfd target"),
  N_("File in wrong format"),
  N_("Archive object file in wrong format"),
  N_("Invalid operation"),
  N_("Memory exhausted"),
  N_("No symbols"),
  N_("Archive has no index; run ranlib to add one"),
  N_("No more archived files"),
  N_("Malformed archive"),
  N_("File format not recognized"),
  N_("File format is ambiguous"),
  N_("Section has no contents"),
  N_("Nonrepresentable section on output"),
  N_("Symbol needs debug section which does not exist"),
  N_("Bad value"),
  N_("File truncated"),
  N_("File too big"),
  N_("Error reading %s: %s"),
  N_("#<Invalid error code>")
};

/*
FUNCTION
	bfd_get_error

SYNOPSIS
	bfd_error_type bfd_get_error (void);

DESCRIPTION
	Return the current BFD error condition.
*/

bfd_error_type
bfd_get_error (void)
{
  return bfd_error;
}

/*
FUNCTION
	bfd_set_error

SYNOPSIS
	void bfd_set_error (bfd_error_type error_tag, ...);

DESCRIPTION
	Set the BFD error condition to be @var{error_tag}.
	If @var{error_tag} is bfd_error_on_input, then this function
	takes two more parameters, the input bfd where the error
	occurred, and the bfd_error_type error.
*/

void
bfd_set_error (bfd_error_type error_tag, ...)
{
  bfd_error = error_tag;
  if (error_tag == bfd_error_on_input)
    {
      /* This is an error that occurred during bfd_close when
	 writing an archive, but on one of the input files.  */
      va_list ap;

      va_start (ap, error_tag);
      input_bfd = va_arg (ap, bfd *);
      input_error = va_arg (ap, int);
      if (input_error >= bfd_error_on_input)
	abort ();
      va_end (ap);
    }
}

/*
FUNCTION
	bfd_errmsg

SYNOPSIS
	const char *bfd_errmsg (bfd_error_type error_tag);

DESCRIPTION
	Return a string describing the error @var{error_tag}, or
	the system error if @var{error_tag} is <<bfd_error_system_call>>.
*/

const char *
bfd_errmsg (bfd_error_type error_tag)
{
#ifndef errno
  extern int errno;
#endif
  if (error_tag == bfd_error_on_input)
    {
      char *buf;
      const char *msg = bfd_errmsg (input_error);

      if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
	  != -1)
	return buf;

      /* Ick, what to do on out of memory?  */
      return msg;
    }

  if (error_tag == bfd_error_system_call)
    return xstrerror (errno);

  if (error_tag > bfd_error_invalid_error_code)
    error_tag = bfd_error_invalid_error_code;	/* sanity check */

  return _(bfd_errmsgs [error_tag]);
}

/*
FUNCTION
	bfd_perror

SYNOPSIS
	void bfd_perror (const char *message);

DESCRIPTION
	Print to the standard error stream a string describing the
	last BFD error that occurred, or the last system error if
	the last BFD error was a system call failure.  If @var{message}
	is non-NULL and non-empty, the error string printed is preceded
	by @var{message}, a colon, and a space.  It is followed by a newline.
*/

void
bfd_perror (const char *message)
{
  if (message == NULL || *message == '\0')
    fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
  else
    fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
}

/*
SUBSECTION
	BFD error handler

	Some BFD functions want to print messages describing the
	problem.  They call a BFD error handler function.  This
	function may be overridden by the program.

	The BFD error handler acts like printf.

CODE_FRAGMENT
.
.typedef void (*bfd_error_handler_type) (const char *, ...);
.
*/

/* The program name used when printing BFD error messages.  */

static const char *_bfd_error_program_name;

/* This is the default routine to handle BFD error messages.
   Like fprintf (stderr, ...), but also handles some extra format specifiers.

   %A section name from section.  For group components, print group name too.
   %B file name from bfd.  For archive components, prints archive too.

   Note - because these two extra format specifiers require special handling
   they are scanned for and processed in this function, before calling
   vfprintf.  This means that the *arguments* for these format specifiers
   must be the first ones in the variable argument list, regardless of where
   the specifiers appear in the format string.  Thus for example calling
   this function with a format string of:

      "blah %s blah %A blah %d blah %B"

   would involve passing the arguments as:

      "blah %s blah %A blah %d blah %B",
        asection_for_the_%A,
	bfd_for_the_%B,
	string_for_the_%s,
	integer_for_the_%d);
 */

void
_bfd_default_error_handler (const char *fmt, ...)
{
  va_list ap;
  char *bufp;
  const char *new_fmt, *p;
  size_t avail = 1000;
  char buf[1000];

  if (_bfd_error_program_name != NULL)
    fprintf (stderr, "%s: ", _bfd_error_program_name);
  else
    fprintf (stderr, "BFD: ");

  va_start (ap, fmt);
  new_fmt = fmt;
  bufp = buf;

  /* Reserve enough space for the existing format string.  */
  avail -= strlen (fmt) + 1;
  if (avail > 1000)
    _exit (EXIT_FAILURE);

  p = fmt;
  while (1)
    {
      char *q;
      size_t len, extra, trim;

      p = strchr (p, '%');
      if (p == NULL || p[1] == '\0')
	{
	  if (new_fmt == buf)
	    {
	      len = strlen (fmt);
	      memcpy (bufp, fmt, len + 1);
	    }
	  break;
	}

      if (p[1] == 'A' || p[1] == 'B')
	{
	  len = p - fmt;
	  memcpy (bufp, fmt, len);
	  bufp += len;
	  fmt = p + 2;
	  new_fmt = buf;

	  /* If we run out of space, tough, you lose your ridiculously
	     long file or section name.  It's not safe to try to alloc
	     memory here;  We might be printing an out of memory message.  */
	  if (avail == 0)
	    {
	      *bufp++ = '*';
	      *bufp++ = '*';
	      *bufp = '\0';
	    }
	  else
	    {
	      if (p[1] == 'B')
		{
		  bfd *abfd = va_arg (ap, bfd *);

		  if (abfd == NULL)
		    /* Invoking %B with a null bfd pointer is an internal error.  */
		    abort ();
		  else if (abfd->my_archive)
		    snprintf (bufp, avail, "%s(%s)",
			      abfd->my_archive->filename, abfd->filename);
		  else
		    snprintf (bufp, avail, "%s", abfd->filename);
		}
	      else
		{
		  asection *sec = va_arg (ap, asection *);
		  bfd *abfd;
		  const char *group = NULL;
		  struct coff_comdat_info *ci;

		  if (sec == NULL)
		    /* Invoking %A with a null section pointer is an internal error.  */
		    abort ();
		  abfd = sec->owner;
		  if (abfd != NULL
		      && bfd_get_flavour (abfd) == bfd_target_elf_flavour
		      && elf_next_in_group (sec) != NULL
		      && (sec->flags & SEC_GROUP) == 0)
		    group = elf_group_name (sec);
		  else if (abfd != NULL
			   && bfd_get_flavour (abfd) == bfd_target_coff_flavour
			   && (ci = bfd_coff_get_comdat_section (sec->owner,
								 sec)) != NULL)
		    group = ci->name;
		  if (group != NULL)
		    snprintf (bufp, avail, "%s[%s]", sec->name, group);
		  else
		    snprintf (bufp, avail, "%s", sec->name);
		}
	      len = strlen (bufp);
	      avail = avail - len + 2;

	      /* We need to replace any '%' we printed by "%%".
		 First count how many.  */
	      q = bufp;
	      bufp += len;
	      extra = 0;
	      while ((q = strchr (q, '%')) != NULL)
		{
		  ++q;
		  ++extra;
		}

	      /* If there isn't room, trim off the end of the string.  */
	      q = bufp;
	      bufp += extra;
	      if (extra > avail)
		{
		  trim = extra - avail;
		  bufp -= trim;
		  do
		    {
		      if (*--q == '%')
			--extra;
		    }
		  while (--trim != 0);
		  *q = '\0';
		  avail = extra;
		}
	      avail -= extra;

	      /* Now double all '%' chars, shuffling the string as we go.  */
	      while (extra != 0)
		{
		  while ((q[extra] = *q) != '%')
		    --q;
		  q[--extra] = '%';
		  --q;
		}
	    }
	}
      p = p + 2;
    }

  vfprintf (stderr, new_fmt, ap);
  va_end (ap);

  putc ('\n', stderr);
}

/* This is a function pointer to the routine which should handle BFD
   error messages.  It is called when a BFD routine encounters an
   error for which it wants to print a message.  Going through a
   function pointer permits a program linked against BFD to intercept
   the messages and deal with them itself.  */

bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;

/*
FUNCTION
	bfd_set_error_handler

SYNOPSIS
	bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);

DESCRIPTION
	Set the BFD error handler function.  Returns the previous
	function.
*/

bfd_error_handler_type
bfd_set_error_handler (bfd_error_handler_type pnew)
{
  bfd_error_handler_type pold;

  pold = _bfd_error_handler;
  _bfd_error_handler = pnew;
  return pold;
}

/*
FUNCTION
	bfd_set_error_program_name

SYNOPSIS
	void bfd_set_error_program_name (const char *);

DESCRIPTION
	Set the program name to use when printing a BFD error.  This
	is printed before the error message followed by a colon and
	space.  The string must not be changed after it is passed to
	this function.
*/

void
bfd_set_error_program_name (const char *name)
{
  _bfd_error_program_name = name;
}

/*
FUNCTION
	bfd_get_error_handler

SYNOPSIS
	bfd_error_handler_type bfd_get_error_handler (void);

DESCRIPTION
	Return the BFD error handler function.
*/

bfd_error_handler_type
bfd_get_error_handler (void)
{
  return _bfd_error_handler;
}

/*
SECTION
	Miscellaneous

SUBSECTION
	Miscellaneous functions
*/

/*
FUNCTION
	bfd_get_reloc_upper_bound

SYNOPSIS
	long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);

DESCRIPTION
	Return the number of bytes required to store the
	relocation information associated with section @var{sect}
	attached to bfd @var{abfd}.  If an error occurs, return -1.

*/

long
bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
{
  if (abfd->format != bfd_object)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return -1;
    }

  return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
}

/*
FUNCTION
	bfd_canonicalize_reloc

SYNOPSIS
	long bfd_canonicalize_reloc
	  (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);

DESCRIPTION
	Call the back end associated with the open BFD
	@var{abfd} and translate the external form of the relocation
	information attached to @var{sec} into the internal canonical
	form.  Place the table into memory at @var{loc}, which has
	been preallocated, usually by a call to
	<<bfd_get_reloc_upper_bound>>.  Returns the number of relocs, or
	-1 on error.

	The @var{syms} table is also needed for horrible internal magic
	reasons.

*/
long
bfd_canonicalize_reloc (bfd *abfd,
			sec_ptr asect,
			arelent **location,
			asymbol **symbols)
{
  if (abfd->format != bfd_object)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return -1;
    }

  return BFD_SEND (abfd, _bfd_canonicalize_reloc,
		   (abfd, asect, location, symbols));
}

/*
FUNCTION
	bfd_set_reloc

SYNOPSIS
	void bfd_set_reloc
	  (bfd *abfd, asection *sec, arelent **rel, unsigned int count);

DESCRIPTION
	Set the relocation pointer and count within
	section @var{sec} to the values @var{rel} and @var{count}.
	The argument @var{abfd} is ignored.

*/

void
bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED,
	       sec_ptr asect,
	       arelent **location,
	       unsigned int count)
{
  asect->orelocation = location;
  asect->reloc_count = count;
}

/*
FUNCTION
	bfd_set_file_flags

SYNOPSIS
	bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);

DESCRIPTION
	Set the flag word in the BFD @var{abfd} to the value @var{flags}.

	Possible errors are:
	o <<bfd_error_wrong_format>> - The target bfd was not of object format.
	o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
	o <<bfd_error_invalid_operation>> -
	The flag word contained a bit which was not applicable to the
	type of file.  E.g., an attempt was made to set the <<D_PAGED>> bit
	on a BFD format which does not support demand paging.

*/

bfd_boolean
bfd_set_file_flags (bfd *abfd, flagword flags)
{
  if (abfd->format != bfd_object)
    {
      bfd_set_error (bfd_error_wrong_format);
      return FALSE;
    }

  if (bfd_read_p (abfd))
    {
      bfd_set_error (bfd_error_invalid_operation);
      return FALSE;
    }

  bfd_get_file_flags (abfd) = flags;
  if ((flags & bfd_applicable_file_flags (abfd)) != flags)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return FALSE;
    }

  return TRUE;
}

void
bfd_assert (const char *file, int line)
{
  (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"),
			 BFD_VERSION_STRING, file, line);
}

/* A more or less friendly abort message.  In libbfd.h abort is
   defined to call this function.  */

void
_bfd_abort (const char *file, int line, const char *fn)
{
  if (fn != NULL)
    (*_bfd_error_handler)
      (_("BFD %s internal error, aborting at %s line %d in %s\n"),
       BFD_VERSION_STRING, file, line, fn);
  else
    (*_bfd_error_handler)
      (_("BFD %s internal error, aborting at %s line %d\n"),
       BFD_VERSION_STRING, file, line);
  (*_bfd_error_handler) (_("Please report this bug.\n"));
  _exit (EXIT_FAILURE);
}

/*
FUNCTION
	bfd_get_arch_size

SYNOPSIS
 	int bfd_get_arch_size (bfd *abfd);

DESCRIPTION
	Returns the architecture address size, in bits, as determined
	by the object file's format.  For ELF, this information is
	included in the header.

RETURNS
	Returns the arch size in bits if known, <<-1>> otherwise.
*/

int
bfd_get_arch_size (bfd *abfd)
{
  if (abfd->xvec->flavour == bfd_target_elf_flavour)
    return get_elf_backend_data (abfd)->s->arch_size;

  return -1;
}

/*
FUNCTION
	bfd_get_sign_extend_vma

SYNOPSIS
 	int bfd_get_sign_extend_vma (bfd *abfd);

DESCRIPTION
	Indicates if the target architecture "naturally" sign extends
	an address.  Some architectures implicitly sign extend address
	values when they are converted to types larger than the size
	of an address.  For instance, bfd_get_start_address() will
	return an address sign extended to fill a bfd_vma when this is
	the case.

RETURNS
	Returns <<1>> if the target architecture is known to sign
	extend addresses, <<0>> if the target architecture is known to
	not sign extend addresses, and <<-1>> otherwise.
*/

int
bfd_get_sign_extend_vma (bfd *abfd)
{
  char *name;

  if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
    return get_elf_backend_data (abfd)->sign_extend_vma;

  name = bfd_get_target (abfd);

  /* Return a proper value for DJGPP & PE COFF.
     This function is required for DWARF2 support, but there is
     no place to store this information in the COFF back end.
     Should enough other COFF targets add support for DWARF2,
     a place will have to be found.  Until then, this hack will do.  */
  if (CONST_STRNEQ (name, "coff-go32")
      || strcmp (name, "pe-i386") == 0
      || strcmp (name, "pei-i386") == 0
      || strcmp (name, "pe-arm-wince-little") == 0
      || strcmp (name, "pei-arm-wince-little") == 0)
    return 1;

  bfd_set_error (bfd_error_wrong_format);
  return -1;
}

/*
FUNCTION
	bfd_set_start_address

SYNOPSIS
 	bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);

DESCRIPTION
	Make @var{vma} the entry point of output BFD @var{abfd}.

RETURNS
	Returns <<TRUE>> on success, <<FALSE>> otherwise.
*/

bfd_boolean
bfd_set_start_address (bfd *abfd, bfd_vma vma)
{
  abfd->start_address = vma;
  return TRUE;
}

/*
FUNCTION
	bfd_get_gp_size

SYNOPSIS
	unsigned int bfd_get_gp_size (bfd *abfd);

DESCRIPTION
	Return the maximum size of objects to be optimized using the GP
	register under MIPS ECOFF.  This is typically set by the <<-G>>
	argument to the compiler, assembler or linker.
*/

unsigned int
bfd_get_gp_size (bfd *abfd)
{
  if (abfd->format == bfd_object)
    {
      if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
	return ecoff_data (abfd)->gp_size;
      else if (abfd->xvec->flavour == bfd_target_elf_flavour)
	return elf_gp_size (abfd);
    }
  return 0;
}

/*
FUNCTION
	bfd_set_gp_size

SYNOPSIS
	void bfd_set_gp_size (bfd *abfd, unsigned int i);

DESCRIPTION
	Set the maximum size of objects to be optimized using the GP
	register under ECOFF or MIPS ELF.  This is typically set by
	the <<-G>> argument to the compiler, assembler or linker.
*/

void
bfd_set_gp_size (bfd *abfd, unsigned int i)
{
  /* Don't try to set GP size on an archive or core file!  */
  if (abfd->format != bfd_object)
    return;

  if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
    ecoff_data (abfd)->gp_size = i;
  else if (abfd->xvec->flavour == bfd_target_elf_flavour)
    elf_gp_size (abfd) = i;
}

/* Get the GP value.  This is an internal function used by some of the
   relocation special_function routines on targets which support a GP
   register.  */

bfd_vma
_bfd_get_gp_value (bfd *abfd)
{
  if (! abfd)
    return 0;
  if (abfd->format != bfd_object)
    return 0;

  if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
    return ecoff_data (abfd)->gp;
  else if (abfd->xvec->flavour == bfd_target_elf_flavour)
    return elf_gp (abfd);

  return 0;
}

/* Set the GP value.  */

void
_bfd_set_gp_value (bfd *abfd, bfd_vma v)
{
  if (! abfd)
    BFD_FAIL ();
  if (abfd->format != bfd_object)
    return;

  if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
    ecoff_data (abfd)->gp = v;
  else if (abfd->xvec->flavour == bfd_target_elf_flavour)
    elf_gp (abfd) = v;
}

/*
FUNCTION
	bfd_scan_vma

SYNOPSIS
	bfd_vma bfd_scan_vma (const char *string, const char **end, int base);

DESCRIPTION
	Convert, like <<strtoul>>, a numerical expression
	@var{string} into a <<bfd_vma>> integer, and return that integer.
	(Though without as many bells and whistles as <<strtoul>>.)
	The expression is assumed to be unsigned (i.e., positive).
	If given a @var{base}, it is used as the base for conversion.
	A base of 0 causes the function to interpret the string
	in hex if a leading "0x" or "0X" is found, otherwise
	in octal if a leading zero is found, otherwise in decimal.

	If the value would overflow, the maximum <<bfd_vma>> value is
	returned.
*/

bfd_vma
bfd_scan_vma (const char *string, const char **end, int base)
{
  bfd_vma value;
  bfd_vma cutoff;
  unsigned int cutlim;
  int overflow;

  /* Let the host do it if possible.  */
  if (sizeof (bfd_vma) <= sizeof (unsigned long))
    return strtoul (string, (char **) end, base);

#ifdef HAVE_STRTOULL
  if (sizeof (bfd_vma) <= sizeof (unsigned long long))
    return strtoull (string, (char **) end, base);
#endif

  if (base == 0)
    {
      if (string[0] == '0')
	{
	  if ((string[1] == 'x') || (string[1] == 'X'))
	    base = 16;
	  else
	    base = 8;
	}
    }

  if ((base < 2) || (base > 36))
    base = 10;

  if (base == 16
      && string[0] == '0'
      && (string[1] == 'x' || string[1] == 'X')
      && ISXDIGIT (string[2]))
    {
      string += 2;
    }

  cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
  cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
  value = 0;
  overflow = 0;
  while (1)
    {
      unsigned int digit;

      digit = *string;
      if (ISDIGIT (digit))
	digit = digit - '0';
      else if (ISALPHA (digit))
	digit = TOUPPER (digit) - 'A' + 10;
      else
	break;
      if (digit >= (unsigned int) base)
	break;
      if (value > cutoff || (value == cutoff && digit > cutlim))
	overflow = 1;
      value = value * base + digit;
      ++string;
    }

  if (overflow)
    value = ~ (bfd_vma) 0;

  if (end != NULL)
    *end = string;

  return value;
}

/*
FUNCTION
	bfd_copy_private_header_data

SYNOPSIS
	bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);

DESCRIPTION
	Copy private BFD header information from the BFD @var{ibfd} to the
	the BFD @var{obfd}.  This copies information that may require
	sections to exist, but does not require symbol tables.  Return
	<<true>> on success, <<false>> on error.
	Possible error returns are:

	o <<bfd_error_no_memory>> -
	Not enough memory exists to create private data for @var{obfd}.

.#define bfd_copy_private_header_data(ibfd, obfd) \
.     BFD_SEND (obfd, _bfd_copy_private_header_data, \
.		(ibfd, obfd))

*/

/*
FUNCTION
	bfd_copy_private_bfd_data

SYNOPSIS
	bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);

DESCRIPTION
	Copy private BFD information from the BFD @var{ibfd} to the
	the BFD @var{obfd}.  Return <<TRUE>> on success, <<FALSE>> on error.
	Possible error returns are:

	o <<bfd_error_no_memory>> -
	Not enough memory exists to create private data for @var{obfd}.

.#define bfd_copy_private_bfd_data(ibfd, obfd) \
.     BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
.		(ibfd, obfd))

*/

/*
FUNCTION
	bfd_merge_private_bfd_data

SYNOPSIS
	bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd);

DESCRIPTION
	Merge private BFD information from the BFD @var{ibfd} to the
	the output file BFD @var{obfd} when linking.  Return <<TRUE>>
	on success, <<FALSE>> on error.  Possible error returns are:

	o <<bfd_error_no_memory>> -
	Not enough memory exists to create private data for @var{obfd}.

.#define bfd_merge_private_bfd_data(ibfd, obfd) \
.     BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
.		(ibfd, obfd))

*/

/*
FUNCTION
	bfd_set_private_flags

SYNOPSIS
	bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);

DESCRIPTION
	Set private BFD flag information in the BFD @var{abfd}.
	Return <<TRUE>> on success, <<FALSE>> on error.  Possible error
	returns are:

	o <<bfd_error_no_memory>> -
	Not enough memory exists to create private data for @var{obfd}.

.#define bfd_set_private_flags(abfd, flags) \
.     BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))

*/

/*
FUNCTION
	Other functions

DESCRIPTION
	The following functions exist but have not yet been documented.

.#define bfd_sizeof_headers(abfd, info) \
.       BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
.
.#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
.       BFD_SEND (abfd, _bfd_find_nearest_line, \
.                 (abfd, sec, syms, off, file, func, line))
.
.#define bfd_find_line(abfd, syms, sym, file, line) \
.       BFD_SEND (abfd, _bfd_find_line, \
.                 (abfd, syms, sym, file, line))
.
.#define bfd_find_inliner_info(abfd, file, func, line) \
.       BFD_SEND (abfd, _bfd_find_inliner_info, \
.                 (abfd, file, func, line))
.
.#define bfd_debug_info_start(abfd) \
.       BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
.
.#define bfd_debug_info_end(abfd) \
.       BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
.
.#define bfd_debug_info_accumulate(abfd, section) \
.       BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
.
.#define bfd_stat_arch_elt(abfd, stat) \
.       BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
.
.#define bfd_update_armap_timestamp(abfd) \
.       BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
.
.#define bfd_set_arch_mach(abfd, arch, mach)\
.       BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
.
.#define bfd_relax_section(abfd, section, link_info, again) \
.       BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
.
.#define bfd_gc_sections(abfd, link_info) \
.	BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
.
.#define bfd_merge_sections(abfd, link_info) \
.	BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
.
.#define bfd_is_group_section(abfd, sec) \
.	BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
.
.#define bfd_discard_group(abfd, sec) \
.	BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
.
.#define bfd_link_hash_table_create(abfd) \
.	BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
.
.#define bfd_link_hash_table_free(abfd, hash) \
.	BFD_SEND (abfd, _bfd_link_hash_table_free, (hash))
.
.#define bfd_link_add_symbols(abfd, info) \
.	BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
.
.#define bfd_link_just_syms(abfd, sec, info) \
.	BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
.
.#define bfd_final_link(abfd, info) \
.	BFD_SEND (abfd, _bfd_final_link, (abfd, info))
.
.#define bfd_free_cached_info(abfd) \
.       BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
.
.#define bfd_get_dynamic_symtab_upper_bound(abfd) \
.	BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
.
.#define bfd_print_private_bfd_data(abfd, file)\
.	BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
.
.#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
.	BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
.
.#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
.	BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
.						    dyncount, dynsyms, ret))
.
.#define bfd_get_dynamic_reloc_upper_bound(abfd) \
.	BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
.
.#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
.	BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
.
.extern bfd_byte *bfd_get_relocated_section_contents
.  (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
.   bfd_boolean, asymbol **);
.

*/

bfd_byte *
bfd_get_relocated_section_contents (bfd *abfd,
				    struct bfd_link_info *link_info,
				    struct bfd_link_order *link_order,
				    bfd_byte *data,
				    bfd_boolean relocatable,
				    asymbol **symbols)
{
  bfd *abfd2;
  bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
		   bfd_byte *, bfd_boolean, asymbol **);

  if (link_order->type == bfd_indirect_link_order)
    {
      abfd2 = link_order->u.indirect.section->owner;
      if (abfd2 == NULL)
	abfd2 = abfd;
    }
  else
    abfd2 = abfd;

  fn = abfd2->xvec->_bfd_get_relocated_section_contents;

  return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
}

/* Record information about an ELF program header.  */

bfd_boolean
bfd_record_phdr (bfd *abfd,
		 unsigned long type,
		 bfd_boolean flags_valid,
		 flagword flags,
		 bfd_boolean at_valid,
		 bfd_vma at,
		 bfd_boolean includes_filehdr,
		 bfd_boolean includes_phdrs,
		 unsigned int count,
		 asection **secs)
{
  struct elf_segment_map *m, **pm;
  bfd_size_type amt;

  if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
    return TRUE;

  amt = sizeof (struct elf_segment_map);
  amt += ((bfd_size_type) count - 1) * sizeof (asection *);
  m = bfd_zalloc (abfd, amt);
  if (m == NULL)
    return FALSE;

  m->p_type = type;
  m->p_flags = flags;
  m->p_paddr = at;
  m->p_flags_valid = flags_valid;
  m->p_paddr_valid = at_valid;
  m->includes_filehdr = includes_filehdr;
  m->includes_phdrs = includes_phdrs;
  m->count = count;
  if (count > 0)
    memcpy (m->sections, secs, count * sizeof (asection *));

  for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
    ;
  *pm = m;

  return TRUE;
}

void
bfd_sprintf_vma (bfd *abfd, char *buf, bfd_vma value)
{
  if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
    get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value);
  else
    sprintf_vma (buf, value);
}

void
bfd_fprintf_vma (bfd *abfd, void *stream, bfd_vma value)
{
  if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
    get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value);
#ifdef BFD64
  /* fprintf_vma() on a 64-bit enabled host will always print a 64-bit
     value, but really we want to display the address in the target's
     address size.  Since we do not have a field in the bfd structure
     to tell us this, we take a guess, based on the target's name.  */
  else if (strstr (bfd_get_target (abfd), "64") == NULL
	   && strcmp (bfd_get_target (abfd), "mmo") != 0)
    fprintf ((FILE *) stream, "%08lx", (unsigned long) (value & 0xffffffff));
#endif
  else
    fprintf_vma ((FILE *) stream, value);
}

/*
FUNCTION
	bfd_alt_mach_code

SYNOPSIS
	bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);

DESCRIPTION

	When more than one machine code number is available for the
	same machine type, this function can be used to switch between
	the preferred one (alternative == 0) and any others.  Currently,
	only ELF supports this feature, with up to two alternate
	machine codes.
*/

bfd_boolean
bfd_alt_mach_code (bfd *abfd, int alternative)
{
  if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
    {
      int code;

      switch (alternative)
	{
	case 0:
	  code = get_elf_backend_data (abfd)->elf_machine_code;
	  break;

	case 1:
	  code = get_elf_backend_data (abfd)->elf_machine_alt1;
	  if (code == 0)
	    return FALSE;
	  break;

	case 2:
	  code = get_elf_backend_data (abfd)->elf_machine_alt2;
	  if (code == 0)
	    return FALSE;
	  break;

	default:
	  return FALSE;
	}

      elf_elfheader (abfd)->e_machine = code;

      return TRUE;
    }

  return FALSE;
}

/*
CODE_FRAGMENT

.struct bfd_preserve
.{
.  void *marker;
.  void *tdata;
.  flagword flags;
.  const struct bfd_arch_info *arch_info;
.  struct bfd_section *sections;
.  struct bfd_section *section_last;
.  unsigned int section_count;
.  struct bfd_hash_table section_htab;
.};
.
*/

/*
FUNCTION
	bfd_preserve_save

SYNOPSIS
	bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *);

DESCRIPTION
	When testing an object for compatibility with a particular
	target back-end, the back-end object_p function needs to set
	up certain fields in the bfd on successfully recognizing the
	object.  This typically happens in a piecemeal fashion, with
	failures possible at many points.  On failure, the bfd is
	supposed to be restored to its initial state, which is
	virtually impossible.  However, restoring a subset of the bfd
	state works in practice.  This function stores the subset and
	reinitializes the bfd.

*/

bfd_boolean
bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve)
{
  preserve->tdata = abfd->tdata.any;
  preserve->arch_info = abfd->arch_info;
  preserve->flags = abfd->flags;
  preserve->sections = abfd->sections;
  preserve->section_last = abfd->section_last;
  preserve->section_count = abfd->section_count;
  preserve->section_htab = abfd->section_htab;

  if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc,
			     sizeof (struct section_hash_entry)))
    return FALSE;

  abfd->tdata.any = NULL;
  abfd->arch_info = &bfd_default_arch_struct;
  abfd->flags &= BFD_IN_MEMORY;
  abfd->sections = NULL;
  abfd->section_last = NULL;
  abfd->section_count = 0;

  return TRUE;
}

/*
FUNCTION
	bfd_preserve_restore

SYNOPSIS
	void bfd_preserve_restore (bfd *, struct bfd_preserve *);

DESCRIPTION
	This function restores bfd state saved by bfd_preserve_save.
	If MARKER is non-NULL in struct bfd_preserve then that block
	and all subsequently bfd_alloc'd memory is freed.

*/

void
bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve)
{
  bfd_hash_table_free (&abfd->section_htab);

  abfd->tdata.any = preserve->tdata;
  abfd->arch_info = preserve->arch_info;
  abfd->flags = preserve->flags;
  abfd->section_htab = preserve->section_htab;
  abfd->sections = preserve->sections;
  abfd->section_last = preserve->section_last;
  abfd->section_count = preserve->section_count;

  /* bfd_release frees all memory more recently bfd_alloc'd than
     its arg, as well as its arg.  */
  if (preserve->marker != NULL)
    {
      bfd_release (abfd, preserve->marker);
      preserve->marker = NULL;
    }
}

/*
FUNCTION
	bfd_preserve_finish

SYNOPSIS
	void bfd_preserve_finish (bfd *, struct bfd_preserve *);

DESCRIPTION
	This function should be called when the bfd state saved by
	bfd_preserve_save is no longer needed.  ie. when the back-end
	object_p function returns with success.

*/

void
bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve)
{
  /* It would be nice to be able to free more memory here, eg. old
     tdata, but that's not possible since these blocks are sitting
     inside bfd_alloc'd memory.  The section hash is on a separate
     objalloc.  */
  bfd_hash_table_free (&preserve->section_htab);
}

/*
FUNCTION
	bfd_emul_get_maxpagesize

SYNOPSIS
 	bfd_vma bfd_emul_get_maxpagesize (const char *);

DESCRIPTION
	Returns the maximum page size, in bytes, as determined by
	emulation.

RETURNS
	Returns the maximum page size in bytes for ELF, abort
	otherwise.
*/

bfd_vma
bfd_emul_get_maxpagesize (const char *emul)
{
  const bfd_target *target;

  target = bfd_find_target (emul, NULL);
  if (target != NULL
      && target->flavour == bfd_target_elf_flavour)
    return xvec_get_elf_backend_data (target)->maxpagesize;

  abort ();
  return 0;
}

static void
bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
		      int offset, const bfd_target *orig_target)
{
  if (target->flavour == bfd_target_elf_flavour)
    {
      const struct elf_backend_data *bed;

      bed = xvec_get_elf_backend_data (target);
      *((bfd_vma *) ((char *) bed + offset)) = size;
    }

  if (target->alternative_target
      && target->alternative_target != orig_target)
    bfd_elf_set_pagesize (target->alternative_target, size, offset,
			  orig_target);
}

/*
FUNCTION
	bfd_emul_set_maxpagesize

SYNOPSIS
 	void bfd_emul_set_maxpagesize (const char *, bfd_vma);

DESCRIPTION
	For ELF, set the maximum page size for the emulation.  It is
	a no-op for other formats.

*/

void
bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
{
  const bfd_target *target;

  target = bfd_find_target (emul, NULL);
  if (target)
    bfd_elf_set_pagesize (target, size,
			  offsetof (struct elf_backend_data,
				    maxpagesize), target);
}

/*
FUNCTION
	bfd_emul_get_commonpagesize

SYNOPSIS
 	bfd_vma bfd_emul_get_commonpagesize (const char *);

DESCRIPTION
	Returns the common page size, in bytes, as determined by
	emulation.

RETURNS
	Returns the common page size in bytes for ELF, abort otherwise.
*/

bfd_vma
bfd_emul_get_commonpagesize (const char *emul)
{
  const bfd_target *target;

  target = bfd_find_target (emul, NULL);
  if (target != NULL
      && target->flavour == bfd_target_elf_flavour)
    return xvec_get_elf_backend_data (target)->commonpagesize;

  abort ();
  return 0;
}

/*
FUNCTION
	bfd_emul_set_commonpagesize

SYNOPSIS
 	void bfd_emul_set_commonpagesize (const char *, bfd_vma);

DESCRIPTION
	For ELF, set the common page size for the emulation.  It is
	a no-op for other formats.

*/

void
bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
{
  const bfd_target *target;

  target = bfd_find_target (emul, NULL);
  if (target)
    bfd_elf_set_pagesize (target, size,
			  offsetof (struct elf_backend_data,
				    commonpagesize), target);
}

/*
FUNCTION
	bfd_demangle

SYNOPSIS
	char *bfd_demangle (bfd *, const char *, int);

DESCRIPTION
	Wrapper around cplus_demangle.  Strips leading underscores and
	other such chars that would otherwise confuse the demangler.
	If passed a g++ v3 ABI mangled name, returns a buffer allocated
	with malloc holding the demangled name.  Returns NULL otherwise
	and on memory alloc failure.
*/

char *
bfd_demangle (bfd *abfd, const char *name, int options)
{
  char *res, *alloc;
  const char *pre, *suf;
  size_t pre_len;

  if (abfd != NULL
      && *name != '\0'
      && bfd_get_symbol_leading_char (abfd) == *name)
    ++name;

  /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
     or the MS PE format.  These formats have a number of leading '.'s
     on at least some symbols, so we remove all dots to avoid
     confusing the demangler.  */
  pre = name;
  while (*name == '.' || *name == '$')
    ++name;
  pre_len = name - pre;

  /* Strip off @plt and suchlike too.  */
  alloc = NULL;
  suf = strchr (name, '@');
  if (suf != NULL)
    {
      alloc = bfd_malloc (suf - name + 1);
      if (alloc == NULL)
	return NULL;
      memcpy (alloc, name, suf - name);
      alloc[suf - name] = '\0';
      name = alloc;
    }

  res = cplus_demangle (name, options);

  if (alloc != NULL)
    free (alloc);

  if (res == NULL)
    return NULL;

  /* Put back any prefix or suffix.  */
  if (pre_len != 0 || suf != NULL)
    {
      size_t len;
      size_t suf_len;
      char *final;

      len = strlen (res);
      if (suf == NULL)
	suf = res + len;
      suf_len = strlen (suf) + 1;
      final = bfd_malloc (pre_len + len + suf_len);
      if (final == NULL)
	return NULL;

      memcpy (final, pre, pre_len);
      memcpy (final + pre_len, res, len);
      memcpy (final + pre_len + len, suf, suf_len);
      free (res);
      res = final;
    }

  return res;
}