aboutsummaryrefslogtreecommitdiff
path: root/bfd/coffgen.c
blob: fcb00fc4737cb03b1cee6a91be9bdf715d81b5c0 (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
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
/* Support for the generic parts of COFF, for BFD.
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   2000, 2001, 2002
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* Most of this hacked by  Steve Chamberlain, sac@cygnus.com.
   Split out of coffcode.h by Ian Taylor, ian@cygnus.com.  */

/* This file contains COFF code that is not dependent on any
   particular COFF target.  There is only one version of this file in
   libbfd.a, so no target specific code may be put in here.  Or, to
   put it another way,

   ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE **********

   If you need to add some target specific behaviour, add a new hook
   function to bfd_coff_backend_data.

   Some of these functions are also called by the ECOFF routines.
   Those functions may not use any COFF specific information, such as
   coff_data (abfd).  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "coff/internal.h"
#include "libcoff.h"

static void coff_fix_symbol_name
  PARAMS ((bfd *, asymbol *, combined_entry_type *, bfd_size_type *,
	   asection **, bfd_size_type *));
static bfd_boolean coff_write_symbol
  PARAMS ((bfd *, asymbol *, combined_entry_type *, bfd_vma *,
	   bfd_size_type *, asection **, bfd_size_type *));
static bfd_boolean coff_write_alien_symbol
  PARAMS ((bfd *, asymbol *, bfd_vma *, bfd_size_type *,
	   asection **, bfd_size_type *));
static bfd_boolean coff_write_native_symbol
  PARAMS ((bfd *, coff_symbol_type *, bfd_vma *, bfd_size_type *,
	   asection **, bfd_size_type *));
static void coff_pointerize_aux
  PARAMS ((bfd *, combined_entry_type *, combined_entry_type *,
	   unsigned int, combined_entry_type *));
static bfd_boolean make_a_section_from_file
  PARAMS ((bfd *, struct internal_scnhdr *, unsigned int));
static const bfd_target *coff_real_object_p
  PARAMS ((bfd *, unsigned, struct internal_filehdr *,
	   struct internal_aouthdr *));
static void fixup_symbol_value
  PARAMS ((bfd *, coff_symbol_type *, struct internal_syment *));
static char *build_debug_section
  PARAMS ((bfd *));
static char *copy_name
  PARAMS ((bfd *, char *, size_t));

#define STRING_SIZE_SIZE (4)

/* Take a section header read from a coff file (in HOST byte order),
   and make a BFD "section" out of it.  This is used by ECOFF.  */
static bfd_boolean
make_a_section_from_file (abfd, hdr, target_index)
     bfd *abfd;
     struct internal_scnhdr *hdr;
     unsigned int target_index;
{
  asection *return_section;
  char *name;
  bfd_boolean result = TRUE;
  flagword flags;

  name = NULL;

  /* Handle long section names as in PE.  */
  if (bfd_coff_long_section_names (abfd)
      && hdr->s_name[0] == '/')
    {
      char buf[SCNNMLEN];
      long strindex;
      char *p;
      const char *strings;

      memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1);
      buf[SCNNMLEN - 1] = '\0';
      strindex = strtol (buf, &p, 10);
      if (*p == '\0' && strindex >= 0)
	{
	  strings = _bfd_coff_read_string_table (abfd);
	  if (strings == NULL)
	    return FALSE;
	  /* FIXME: For extra safety, we should make sure that
             strindex does not run us past the end, but right now we
             don't know the length of the string table.  */
	  strings += strindex;
	  name = bfd_alloc (abfd, (bfd_size_type) strlen (strings) + 1);
	  if (name == NULL)
	    return FALSE;
	  strcpy (name, strings);
	}
    }

  if (name == NULL)
    {
      /* Assorted wastage to null-terminate the name, thanks AT&T! */
      name = bfd_alloc (abfd, (bfd_size_type) sizeof (hdr->s_name) + 1);
      if (name == NULL)
	return FALSE;
      strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
      name[sizeof (hdr->s_name)] = 0;
    }

  return_section = bfd_make_section_anyway (abfd, name);
  if (return_section == NULL)
    return FALSE;

  return_section->vma = hdr->s_vaddr;
  return_section->lma = hdr->s_paddr;
  return_section->_raw_size = hdr->s_size;
  return_section->filepos = hdr->s_scnptr;
  return_section->rel_filepos = hdr->s_relptr;
  return_section->reloc_count = hdr->s_nreloc;

  bfd_coff_set_alignment_hook (abfd, return_section, hdr);

  return_section->line_filepos = hdr->s_lnnoptr;

  return_section->lineno_count = hdr->s_nlnno;
  return_section->userdata = NULL;
  return_section->next = (asection *) NULL;
  return_section->target_index = target_index;

  if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section,
					 & flags))
    result = FALSE;

  return_section->flags = flags;

  /* At least on i386-coff, the line number count for a shared library
     section must be ignored.  */
  if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
    return_section->lineno_count = 0;

  if (hdr->s_nreloc != 0)
    return_section->flags |= SEC_RELOC;
  /* FIXME: should this check 'hdr->s_size > 0' */
  if (hdr->s_scnptr != 0)
    return_section->flags |= SEC_HAS_CONTENTS;

  return result;
}

/* Read in a COFF object and make it into a BFD.  This is used by
   ECOFF as well.  */

static const bfd_target *
coff_real_object_p (abfd, nscns, internal_f, internal_a)
     bfd *abfd;
     unsigned nscns;
     struct internal_filehdr *internal_f;
     struct internal_aouthdr *internal_a;
{
  flagword oflags = abfd->flags;
  bfd_vma ostart = bfd_get_start_address (abfd);
  PTR tdata;
  PTR tdata_save;
  bfd_size_type readsize;	/* length of file_info */
  unsigned int scnhsz;
  char *external_sections;

  if (!(internal_f->f_flags & F_RELFLG))
    abfd->flags |= HAS_RELOC;
  if ((internal_f->f_flags & F_EXEC))
    abfd->flags |= EXEC_P;
  if (!(internal_f->f_flags & F_LNNO))
    abfd->flags |= HAS_LINENO;
  if (!(internal_f->f_flags & F_LSYMS))
    abfd->flags |= HAS_LOCALS;

  /* FIXME: How can we set D_PAGED correctly?  */
  if ((internal_f->f_flags & F_EXEC) != 0)
    abfd->flags |= D_PAGED;

  bfd_get_symcount (abfd) = internal_f->f_nsyms;
  if (internal_f->f_nsyms)
    abfd->flags |= HAS_SYMS;

  if (internal_a != (struct internal_aouthdr *) NULL)
    bfd_get_start_address (abfd) = internal_a->entry;
  else
    bfd_get_start_address (abfd) = 0;

  /* Set up the tdata area.  ECOFF uses its own routine, and overrides
     abfd->flags.  */
  tdata_save = abfd->tdata.any;
  tdata = bfd_coff_mkobject_hook (abfd, (PTR) internal_f, (PTR) internal_a);
  if (tdata == NULL)
    goto fail2;

  scnhsz = bfd_coff_scnhsz (abfd);
  readsize = (bfd_size_type) nscns * scnhsz;
  external_sections = (char *) bfd_alloc (abfd, readsize);
  if (!external_sections)
    goto fail;

  if (bfd_bread ((PTR) external_sections, readsize, abfd) != readsize)
    goto fail;

  /* Set the arch/mach *before* swapping in sections; section header swapping
     may depend on arch/mach info.  */
  if (! bfd_coff_set_arch_mach_hook (abfd, (PTR) internal_f))
    goto fail;

  /* Now copy data as required; construct all asections etc.  */
  if (nscns != 0)
    {
      unsigned int i;
      for (i = 0; i < nscns; i++)
	{
	  struct internal_scnhdr tmp;
	  bfd_coff_swap_scnhdr_in (abfd,
				   (PTR) (external_sections + i * scnhsz),
				   (PTR) & tmp);
	  if (! make_a_section_from_file (abfd, &tmp, i + 1))
	    goto fail;
	}
    }

  return abfd->xvec;

 fail:
  bfd_release (abfd, tdata);
 fail2:
  abfd->tdata.any = tdata_save;
  abfd->flags = oflags;
  bfd_get_start_address (abfd) = ostart;
  return (const bfd_target *) NULL;
}

/* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is
   not a COFF file.  This is also used by ECOFF.  */

const bfd_target *
coff_object_p (abfd)
     bfd *abfd;
{
  bfd_size_type filhsz;
  bfd_size_type aoutsz;
  unsigned int nscns;
  PTR filehdr;
  struct internal_filehdr internal_f;
  struct internal_aouthdr internal_a;

  /* figure out how much to read */
  filhsz = bfd_coff_filhsz (abfd);
  aoutsz = bfd_coff_aoutsz (abfd);

  filehdr = bfd_alloc (abfd, filhsz);
  if (filehdr == NULL)
    return NULL;
  if (bfd_bread (filehdr, filhsz, abfd) != filhsz)
    {
      if (bfd_get_error () != bfd_error_system_call)
	bfd_set_error (bfd_error_wrong_format);
      bfd_release (abfd, filehdr);
      return NULL;
    }
  bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f);
  bfd_release (abfd, filehdr);

  /* The XCOFF format has two sizes for the f_opthdr.  SMALL_AOUTSZ
     (less than aoutsz) used in object files and AOUTSZ (equal to
     aoutsz) in executables.  The bfd_coff_swap_aouthdr_in function
     expects this header to be aoutsz bytes in length, so we use that
     value in the call to bfd_alloc below.  But we must be careful to
     only read in f_opthdr bytes in the call to bfd_bread.  We should
     also attempt to catch corrupt or non-COFF binaries with a strange
     value for f_opthdr.  */
  if (! bfd_coff_bad_format_hook (abfd, &internal_f)
      || internal_f.f_opthdr > aoutsz)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }
  nscns = internal_f.f_nscns;

  if (internal_f.f_opthdr)
    {
      PTR opthdr;

      opthdr = bfd_alloc (abfd, aoutsz);
      if (opthdr == NULL)
	return NULL;
      if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd)
	  != internal_f.f_opthdr)
	{
	  bfd_release (abfd, opthdr);
	  return NULL;
	}
      bfd_coff_swap_aouthdr_in (abfd, opthdr, (PTR) &internal_a);
      bfd_release (abfd, opthdr);
    }

  return coff_real_object_p (abfd, nscns, &internal_f,
			     (internal_f.f_opthdr != 0
			      ? &internal_a
			      : (struct internal_aouthdr *) NULL));
}

/* Get the BFD section from a COFF symbol section number.  */

asection *
coff_section_from_bfd_index (abfd, index)
     bfd *abfd;
     int index;
{
  struct sec *answer = abfd->sections;

  if (index == N_ABS)
    return bfd_abs_section_ptr;
  if (index == N_UNDEF)
    return bfd_und_section_ptr;
  if (index == N_DEBUG)
    return bfd_abs_section_ptr;

  while (answer)
    {
      if (answer->target_index == index)
	return answer;
      answer = answer->next;
    }

  /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a
     has a bad symbol table in biglitpow.o.  */
  return bfd_und_section_ptr;
}

/* Get the upper bound of a COFF symbol table.  */

long
coff_get_symtab_upper_bound (abfd)
     bfd *abfd;
{
  if (!bfd_coff_slurp_symbol_table (abfd))
    return -1;

  return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *));
}

/* Canonicalize a COFF symbol table.  */

long
coff_get_symtab (abfd, alocation)
     bfd *abfd;
     asymbol **alocation;
{
  unsigned int counter;
  coff_symbol_type *symbase;
  coff_symbol_type **location = (coff_symbol_type **) alocation;

  if (!bfd_coff_slurp_symbol_table (abfd))
    return -1;

  symbase = obj_symbols (abfd);
  counter = bfd_get_symcount (abfd);
  while (counter-- > 0)
    *location++ = symbase++;

  *location = NULL;

  return bfd_get_symcount (abfd);
}

/* Get the name of a symbol.  The caller must pass in a buffer of size
   >= SYMNMLEN + 1.  */

const char *
_bfd_coff_internal_syment_name (abfd, sym, buf)
     bfd *abfd;
     const struct internal_syment *sym;
     char *buf;
{
  /* FIXME: It's not clear this will work correctly if sizeof
     (_n_zeroes) != 4.  */
  if (sym->_n._n_n._n_zeroes != 0
      || sym->_n._n_n._n_offset == 0)
    {
      memcpy (buf, sym->_n._n_name, SYMNMLEN);
      buf[SYMNMLEN] = '\0';
      return buf;
    }
  else
    {
      const char *strings;

      BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE);
      strings = obj_coff_strings (abfd);
      if (strings == NULL)
	{
	  strings = _bfd_coff_read_string_table (abfd);
	  if (strings == NULL)
	    return NULL;
	}
      return strings + sym->_n._n_n._n_offset;
    }
}

/* Read in and swap the relocs.  This returns a buffer holding the
   relocs for section SEC in file ABFD.  If CACHE is TRUE and
   INTERNAL_RELOCS is NULL, the relocs read in will be saved in case
   the function is called again.  If EXTERNAL_RELOCS is not NULL, it
   is a buffer large enough to hold the unswapped relocs.  If
   INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold
   the swapped relocs.  If REQUIRE_INTERNAL is TRUE, then the return
   value must be INTERNAL_RELOCS.  The function returns NULL on error.  */

struct internal_reloc *
_bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs,
				require_internal, internal_relocs)
     bfd *abfd;
     asection *sec;
     bfd_boolean cache;
     bfd_byte *external_relocs;
     bfd_boolean require_internal;
     struct internal_reloc *internal_relocs;
{
  bfd_size_type relsz;
  bfd_byte *free_external = NULL;
  struct internal_reloc *free_internal = NULL;
  bfd_byte *erel;
  bfd_byte *erel_end;
  struct internal_reloc *irel;
  bfd_size_type amt;

  if (coff_section_data (abfd, sec) != NULL
      && coff_section_data (abfd, sec)->relocs != NULL)
    {
      if (! require_internal)
	return coff_section_data (abfd, sec)->relocs;
      memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs,
	      sec->reloc_count * sizeof (struct internal_reloc));
      return internal_relocs;
    }

  relsz = bfd_coff_relsz (abfd);

  amt = sec->reloc_count * relsz;
  if (external_relocs == NULL)
    {
      free_external = (bfd_byte *) bfd_malloc (amt);
      if (free_external == NULL && sec->reloc_count > 0)
	goto error_return;
      external_relocs = free_external;
    }

  if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
      || bfd_bread (external_relocs, amt, abfd) != amt)
    goto error_return;

  if (internal_relocs == NULL)
    {
      amt = sec->reloc_count;
      amt *= sizeof (struct internal_reloc);
      free_internal = (struct internal_reloc *) bfd_malloc (amt);
      if (free_internal == NULL && sec->reloc_count > 0)
	goto error_return;
      internal_relocs = free_internal;
    }

  /* Swap in the relocs.  */
  erel = external_relocs;
  erel_end = erel + relsz * sec->reloc_count;
  irel = internal_relocs;
  for (; erel < erel_end; erel += relsz, irel++)
    bfd_coff_swap_reloc_in (abfd, (PTR) erel, (PTR) irel);

  if (free_external != NULL)
    {
      free (free_external);
      free_external = NULL;
    }

  if (cache && free_internal != NULL)
    {
      if (coff_section_data (abfd, sec) == NULL)
	{
	  amt = sizeof (struct coff_section_tdata);
	  sec->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
	  if (sec->used_by_bfd == NULL)
	    goto error_return;
	  coff_section_data (abfd, sec)->contents = NULL;
	}
      coff_section_data (abfd, sec)->relocs = free_internal;
    }

  return internal_relocs;

 error_return:
  if (free_external != NULL)
    free (free_external);
  if (free_internal != NULL)
    free (free_internal);
  return NULL;
}

/* Set lineno_count for the output sections of a COFF file.  */

int
coff_count_linenumbers (abfd)
     bfd *abfd;
{
  unsigned int limit = bfd_get_symcount (abfd);
  unsigned int i;
  int total = 0;
  asymbol **p;
  asection *s;

  if (limit == 0)
    {
      /* This may be from the backend linker, in which case the
         lineno_count in the sections is correct.  */
      for (s = abfd->sections; s != NULL; s = s->next)
	total += s->lineno_count;
      return total;
    }

  for (s = abfd->sections; s != NULL; s = s->next)
    BFD_ASSERT (s->lineno_count == 0);

  for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
    {
      asymbol *q_maybe = *p;

      if (bfd_family_coff (bfd_asymbol_bfd (q_maybe)))
	{
	  coff_symbol_type *q = coffsymbol (q_maybe);

	  /* The AIX 4.1 compiler can sometimes generate line numbers
             attached to debugging symbols.  We try to simply ignore
             those here.  */
	  if (q->lineno != NULL
	      && q->symbol.section->owner != NULL)
	    {
	      /* This symbol has line numbers.  Increment the owning
	         section's linenumber count.  */
	      alent *l = q->lineno;

	      do
		{
		  asection * sec = q->symbol.section->output_section;

		  /* Do not try to update fields in read-only sections.  */
		  if (! bfd_is_const_section (sec))
		    sec->lineno_count ++;

		  ++total;
		  ++l;
		}
	      while (l->line_number != 0);
	    }
	}
    }

  return total;
}

/* Takes a bfd and a symbol, returns a pointer to the coff specific
   area of the symbol if there is one.  */

coff_symbol_type *
coff_symbol_from (ignore_abfd, symbol)
     bfd *ignore_abfd ATTRIBUTE_UNUSED;
     asymbol *symbol;
{
  if (!bfd_family_coff (bfd_asymbol_bfd (symbol)))
    return (coff_symbol_type *) NULL;

  if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL)
    return (coff_symbol_type *) NULL;

  return (coff_symbol_type *) symbol;
}

static void
fixup_symbol_value (abfd, coff_symbol_ptr, syment)
     bfd *abfd;
     coff_symbol_type *coff_symbol_ptr;
     struct internal_syment *syment;
{

  /* Normalize the symbol flags */
  if (bfd_is_com_section (coff_symbol_ptr->symbol.section))
    {
      /* a common symbol is undefined with a value */
      syment->n_scnum = N_UNDEF;
      syment->n_value = coff_symbol_ptr->symbol.value;
    }
  else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0
	   && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0)
    {
      syment->n_value = coff_symbol_ptr->symbol.value;
    }
  else if (bfd_is_und_section (coff_symbol_ptr->symbol.section))
    {
      syment->n_scnum = N_UNDEF;
      syment->n_value = 0;
    }
  /* FIXME: Do we need to handle the absolute section here?  */
  else
    {
      if (coff_symbol_ptr->symbol.section)
	{
	  syment->n_scnum =
	    coff_symbol_ptr->symbol.section->output_section->target_index;

	  syment->n_value = (coff_symbol_ptr->symbol.value
			     + coff_symbol_ptr->symbol.section->output_offset);
	  if (! obj_pe (abfd))
            {
              syment->n_value += (syment->n_sclass == C_STATLAB)
                ? coff_symbol_ptr->symbol.section->output_section->lma
                : coff_symbol_ptr->symbol.section->output_section->vma;
            }
	}
      else
	{
	  BFD_ASSERT (0);
	  /* This can happen, but I don't know why yet (steve@cygnus.com) */
	  syment->n_scnum = N_ABS;
	  syment->n_value = coff_symbol_ptr->symbol.value;
	}
    }
}

/* Run through all the symbols in the symbol table and work out what
   their indexes into the symbol table will be when output.

   Coff requires that each C_FILE symbol points to the next one in the
   chain, and that the last one points to the first external symbol. We
   do that here too.  */

bfd_boolean
coff_renumber_symbols (bfd_ptr, first_undef)
     bfd *bfd_ptr;
     int *first_undef;
{
  unsigned int symbol_count = bfd_get_symcount (bfd_ptr);
  asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
  unsigned int native_index = 0;
  struct internal_syment *last_file = (struct internal_syment *) NULL;
  unsigned int symbol_index;

  /* COFF demands that undefined symbols come after all other symbols.
     Since we don't need to impose this extra knowledge on all our
     client programs, deal with that here.  Sort the symbol table;
     just move the undefined symbols to the end, leaving the rest
     alone.  The O'Reilly book says that defined global symbols come
     at the end before the undefined symbols, so we do that here as
     well.  */
  /* @@ Do we have some condition we could test for, so we don't always
     have to do this?  I don't think relocatability is quite right, but
     I'm not certain.  [raeburn:19920508.1711EST]  */
  {
    asymbol **newsyms;
    unsigned int i;
    bfd_size_type amt;

    amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1);
    newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt);
    if (!newsyms)
      return FALSE;
    bfd_ptr->outsymbols = newsyms;
    for (i = 0; i < symbol_count; i++)
      if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0
	  || (!bfd_is_und_section (symbol_ptr_ptr[i]->section)
	      && !bfd_is_com_section (symbol_ptr_ptr[i]->section)
	      && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0
		  || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK))
		      == 0))))
	*newsyms++ = symbol_ptr_ptr[i];

    for (i = 0; i < symbol_count; i++)
      if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0
	  && !bfd_is_und_section (symbol_ptr_ptr[i]->section)
	  && (bfd_is_com_section (symbol_ptr_ptr[i]->section)
	      || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0
		  && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK))
		      != 0))))
	*newsyms++ = symbol_ptr_ptr[i];

    *first_undef = newsyms - bfd_ptr->outsymbols;

    for (i = 0; i < symbol_count; i++)
      if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0
	  && bfd_is_und_section (symbol_ptr_ptr[i]->section))
	*newsyms++ = symbol_ptr_ptr[i];
    *newsyms = (asymbol *) NULL;
    symbol_ptr_ptr = bfd_ptr->outsymbols;
  }

  for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
    {
      coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]);
      symbol_ptr_ptr[symbol_index]->udata.i = symbol_index;
      if (coff_symbol_ptr && coff_symbol_ptr->native)
	{
	  combined_entry_type *s = coff_symbol_ptr->native;
	  int i;

	  if (s->u.syment.n_sclass == C_FILE)
	    {
	      if (last_file != (struct internal_syment *) NULL)
		last_file->n_value = native_index;
	      last_file = &(s->u.syment);
	    }
	  else
	    {

	      /* Modify the symbol values according to their section and
	         type */

	      fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment));
	    }
	  for (i = 0; i < s->u.syment.n_numaux + 1; i++)
	    s[i].offset = native_index++;
	}
      else
	{
	  native_index++;
	}
    }
  obj_conv_table_size (bfd_ptr) = native_index;

  return TRUE;
}

/* Run thorough the symbol table again, and fix it so that all
   pointers to entries are changed to the entries' index in the output
   symbol table.  */

void
coff_mangle_symbols (bfd_ptr)
     bfd *bfd_ptr;
{
  unsigned int symbol_count = bfd_get_symcount (bfd_ptr);
  asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
  unsigned int symbol_index;

  for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
    {
      coff_symbol_type *coff_symbol_ptr =
      coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]);

      if (coff_symbol_ptr && coff_symbol_ptr->native)
	{
	  int i;
	  combined_entry_type *s = coff_symbol_ptr->native;

	  if (s->fix_value)
	    {
	      /* FIXME: We should use a union here.  */
	      s->u.syment.n_value =
		(bfd_vma)((combined_entry_type *)
			  ((unsigned long) s->u.syment.n_value))->offset;
	      s->fix_value = 0;
	    }
	  if (s->fix_line)
	    {
	      /* The value is the offset into the line number entries
                 for the symbol's section.  On output, the symbol's
                 section should be N_DEBUG.  */
	      s->u.syment.n_value =
		(coff_symbol_ptr->symbol.section->output_section->line_filepos
		 + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr));
	      coff_symbol_ptr->symbol.section =
		coff_section_from_bfd_index (bfd_ptr, N_DEBUG);
	      BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING);
	    }
	  for (i = 0; i < s->u.syment.n_numaux; i++)
	    {
	      combined_entry_type *a = s + i + 1;
	      if (a->fix_tag)
		{
		  a->u.auxent.x_sym.x_tagndx.l =
		    a->u.auxent.x_sym.x_tagndx.p->offset;
		  a->fix_tag = 0;
		}
	      if (a->fix_end)
		{
		  a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l =
		    a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset;
		  a->fix_end = 0;
		}
	      if (a->fix_scnlen)
		{
		  a->u.auxent.x_csect.x_scnlen.l =
		    a->u.auxent.x_csect.x_scnlen.p->offset;
		  a->fix_scnlen = 0;
		}
	    }
	}
    }
}

static void
coff_fix_symbol_name (abfd, symbol, native, string_size_p,
		      debug_string_section_p, debug_string_size_p)
     bfd *abfd;
     asymbol *symbol;
     combined_entry_type *native;
     bfd_size_type *string_size_p;
     asection **debug_string_section_p;
     bfd_size_type *debug_string_size_p;
{
  unsigned int name_length;
  union internal_auxent *auxent;
  char *name = (char *) (symbol->name);

  if (name == (char *) NULL)
    {
      /* coff symbols always have names, so we'll make one up */
      symbol->name = "strange";
      name = (char *) symbol->name;
    }
  name_length = strlen (name);

  if (native->u.syment.n_sclass == C_FILE
      && native->u.syment.n_numaux > 0)
    {
      unsigned int filnmlen;

      if (bfd_coff_force_symnames_in_strings (abfd))
	{
          native->u.syment._n._n_n._n_offset =
	      (*string_size_p + STRING_SIZE_SIZE);
	  native->u.syment._n._n_n._n_zeroes = 0;
	  *string_size_p += 6;  /* strlen(".file") + 1 */
	}
      else
  	strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN);

      auxent = &(native + 1)->u.auxent;

      filnmlen = bfd_coff_filnmlen (abfd);

      if (bfd_coff_long_filenames (abfd))
	{
	  if (name_length <= filnmlen)
	    {
	      strncpy (auxent->x_file.x_fname, name, filnmlen);
	    }
	  else
	    {
	      auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE;
	      auxent->x_file.x_n.x_zeroes = 0;
	      *string_size_p += name_length + 1;
	    }
	}
      else
	{
	  strncpy (auxent->x_file.x_fname, name, filnmlen);
	  if (name_length > filnmlen)
	    name[filnmlen] = '\0';
	}
    }
  else
    {
      if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd))
	{
	  /* This name will fit into the symbol neatly */
	  strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN);
	}
      else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment))
	{
	  native->u.syment._n._n_n._n_offset = (*string_size_p
						+ STRING_SIZE_SIZE);
	  native->u.syment._n._n_n._n_zeroes = 0;
	  *string_size_p += name_length + 1;
	}
      else
	{
	  file_ptr filepos;
	  bfd_byte buf[4];
	  int prefix_len = bfd_coff_debug_string_prefix_length (abfd);

	  /* This name should be written into the .debug section.  For
	     some reason each name is preceded by a two byte length
	     and also followed by a null byte.  FIXME: We assume that
	     the .debug section has already been created, and that it
	     is large enough.  */
	  if (*debug_string_section_p == (asection *) NULL)
	    *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug");
	  filepos = bfd_tell (abfd);
	  if (prefix_len == 4)
	    bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf);
	  else
	    bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf);

	  if (!bfd_set_section_contents (abfd,
					 *debug_string_section_p,
					 (PTR) buf,
					 (file_ptr) *debug_string_size_p,
					 (bfd_size_type) prefix_len)
	      || !bfd_set_section_contents (abfd,
					    *debug_string_section_p,
					    (PTR) symbol->name,
					    (file_ptr) (*debug_string_size_p
							+ prefix_len),
					    (bfd_size_type) name_length + 1))
	    abort ();
	  if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
	    abort ();
	  native->u.syment._n._n_n._n_offset =
	      *debug_string_size_p + prefix_len;
	  native->u.syment._n._n_n._n_zeroes = 0;
	  *debug_string_size_p += name_length + 1 + prefix_len;
	}
    }
}

/* We need to keep track of the symbol index so that when we write out
   the relocs we can get the index for a symbol.  This method is a
   hack.  FIXME.  */

#define set_index(symbol, idx)	((symbol)->udata.i = (idx))

/* Write a symbol out to a COFF file.  */

static bfd_boolean
coff_write_symbol (abfd, symbol, native, written, string_size_p,
		   debug_string_section_p, debug_string_size_p)
     bfd *abfd;
     asymbol *symbol;
     combined_entry_type *native;
     bfd_vma *written;
     bfd_size_type *string_size_p;
     asection **debug_string_section_p;
     bfd_size_type *debug_string_size_p;
{
  unsigned int numaux = native->u.syment.n_numaux;
  int type = native->u.syment.n_type;
  int class = native->u.syment.n_sclass;
  PTR buf;
  bfd_size_type symesz;

  if (native->u.syment.n_sclass == C_FILE)
    symbol->flags |= BSF_DEBUGGING;

  if (symbol->flags & BSF_DEBUGGING
      && bfd_is_abs_section (symbol->section))
    {
      native->u.syment.n_scnum = N_DEBUG;
    }
  else if (bfd_is_abs_section (symbol->section))
    {
      native->u.syment.n_scnum = N_ABS;
    }
  else if (bfd_is_und_section (symbol->section))
    {
      native->u.syment.n_scnum = N_UNDEF;
    }
  else
    {
      native->u.syment.n_scnum =
	symbol->section->output_section->target_index;
    }

  coff_fix_symbol_name (abfd, symbol, native, string_size_p,
			debug_string_section_p, debug_string_size_p);

  symesz = bfd_coff_symesz (abfd);
  buf = bfd_alloc (abfd, symesz);
  if (!buf)
    return FALSE;
  bfd_coff_swap_sym_out (abfd, &native->u.syment, buf);
  if (bfd_bwrite (buf, symesz, abfd) != symesz)
    return FALSE;
  bfd_release (abfd, buf);

  if (native->u.syment.n_numaux > 0)
    {
      bfd_size_type auxesz;
      unsigned int j;

      auxesz = bfd_coff_auxesz (abfd);
      buf = bfd_alloc (abfd, auxesz);
      if (!buf)
	return FALSE;
      for (j = 0; j < native->u.syment.n_numaux; j++)
	{
	  bfd_coff_swap_aux_out (abfd,
				 &((native + j + 1)->u.auxent),
				 type,
				 class,
				 (int) j,
				 native->u.syment.n_numaux,
				 buf);
	  if (bfd_bwrite (buf, auxesz, abfd) != auxesz)
	    return FALSE;
	}
      bfd_release (abfd, buf);
    }

  /* Store the index for use when we write out the relocs.  */
  set_index (symbol, *written);

  *written += numaux + 1;
  return TRUE;
}

/* Write out a symbol to a COFF file that does not come from a COFF
   file originally.  This symbol may have been created by the linker,
   or we may be linking a non COFF file to a COFF file.  */

static bfd_boolean
coff_write_alien_symbol (abfd, symbol, written, string_size_p,
			 debug_string_section_p, debug_string_size_p)
     bfd *abfd;
     asymbol *symbol;
     bfd_vma *written;
     bfd_size_type *string_size_p;
     asection **debug_string_section_p;
     bfd_size_type *debug_string_size_p;
{
  combined_entry_type *native;
  combined_entry_type dummy;

  native = &dummy;
  native->u.syment.n_type = T_NULL;
  native->u.syment.n_flags = 0;
  if (bfd_is_und_section (symbol->section))
    {
      native->u.syment.n_scnum = N_UNDEF;
      native->u.syment.n_value = symbol->value;
    }
  else if (bfd_is_com_section (symbol->section))
    {
      native->u.syment.n_scnum = N_UNDEF;
      native->u.syment.n_value = symbol->value;
    }
  else if (symbol->flags & BSF_DEBUGGING)
    {
      /* There isn't much point to writing out a debugging symbol
         unless we are prepared to convert it into COFF debugging
         format.  So, we just ignore them.  We must clobber the symbol
         name to keep it from being put in the string table.  */
      symbol->name = "";
      return TRUE;
    }
  else
    {
      native->u.syment.n_scnum =
	symbol->section->output_section->target_index;
      native->u.syment.n_value = (symbol->value
				  + symbol->section->output_offset);
      if (! obj_pe (abfd))
	native->u.syment.n_value += symbol->section->output_section->vma;

      /* Copy the any flags from the file header into the symbol.
         FIXME: Why?  */
      {
	coff_symbol_type *c = coff_symbol_from (abfd, symbol);
	if (c != (coff_symbol_type *) NULL)
	  native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags;
      }
    }

  native->u.syment.n_type = 0;
  if (symbol->flags & BSF_LOCAL)
    native->u.syment.n_sclass = C_STAT;
  else if (symbol->flags & BSF_WEAK)
    native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT;
  else
    native->u.syment.n_sclass = C_EXT;
  native->u.syment.n_numaux = 0;

  return coff_write_symbol (abfd, symbol, native, written, string_size_p,
			    debug_string_section_p, debug_string_size_p);
}

/* Write a native symbol to a COFF file.  */

static bfd_boolean
coff_write_native_symbol (abfd, symbol, written, string_size_p,
			  debug_string_section_p, debug_string_size_p)
     bfd *abfd;
     coff_symbol_type *symbol;
     bfd_vma *written;
     bfd_size_type *string_size_p;
     asection **debug_string_section_p;
     bfd_size_type *debug_string_size_p;
{
  combined_entry_type *native = symbol->native;
  alent *lineno = symbol->lineno;

  /* If this symbol has an associated line number, we must store the
     symbol index in the line number field.  We also tag the auxent to
     point to the right place in the lineno table.  */
  if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL)
    {
      unsigned int count = 0;
      lineno[count].u.offset = *written;
      if (native->u.syment.n_numaux)
	{
	  union internal_auxent *a = &((native + 1)->u.auxent);

	  a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
	    symbol->symbol.section->output_section->moving_line_filepos;
	}

      /* Count and relocate all other linenumbers.  */
      count++;
      while (lineno[count].line_number != 0)
	{
#if 0
	  /* 13 april 92. sac
	     I've been told this, but still need proof:
	     > The second bug is also in `bfd/coffcode.h'.  This bug
	     > causes the linker to screw up the pc-relocations for
	     > all the line numbers in COFF code.  This bug isn't only
	     > specific to A29K implementations, but affects all
	     > systems using COFF format binaries.  Note that in COFF
	     > object files, the line number core offsets output by
	     > the assembler are relative to the start of each
	     > procedure, not to the start of the .text section.  This
	     > patch relocates the line numbers relative to the
	     > `native->u.syment.n_value' instead of the section
	     > virtual address.
	     > modular!olson@cs.arizona.edu (Jon Olson)
	   */
	  lineno[count].u.offset += native->u.syment.n_value;
#else
	  lineno[count].u.offset +=
	    (symbol->symbol.section->output_section->vma
	     + symbol->symbol.section->output_offset);
#endif
	  count++;
	}
      symbol->done_lineno = TRUE;

      if (! bfd_is_const_section (symbol->symbol.section->output_section))
	symbol->symbol.section->output_section->moving_line_filepos +=
	  count * bfd_coff_linesz (abfd);
    }

  return coff_write_symbol (abfd, &(symbol->symbol), native, written,
			    string_size_p, debug_string_section_p,
			    debug_string_size_p);
}

/* Write out the COFF symbols.  */

bfd_boolean
coff_write_symbols (abfd)
     bfd *abfd;
{
  bfd_size_type string_size;
  asection *debug_string_section;
  bfd_size_type debug_string_size;
  unsigned int i;
  unsigned int limit = bfd_get_symcount (abfd);
  bfd_signed_vma written = 0;
  asymbol **p;

  string_size = 0;
  debug_string_section = NULL;
  debug_string_size = 0;

  /* If this target supports long section names, they must be put into
     the string table.  This is supported by PE.  This code must
     handle section names just as they are handled in
     coff_write_object_contents.  */
  if (bfd_coff_long_section_names (abfd))
    {
      asection *o;

      for (o = abfd->sections; o != NULL; o = o->next)
	{
	  size_t len;

	  len = strlen (o->name);
	  if (len > SCNNMLEN)
	    string_size += len + 1;
	}
    }

  /* Seek to the right place */
  if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
    return FALSE;

  /* Output all the symbols we have */

  written = 0;
  for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
    {
      asymbol *symbol = *p;
      coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol);

      if (c_symbol == (coff_symbol_type *) NULL
	  || c_symbol->native == (combined_entry_type *) NULL)
	{
	  if (!coff_write_alien_symbol (abfd, symbol, &written, &string_size,
					&debug_string_section,
					&debug_string_size))
	    return FALSE;
	}
      else
	{
	  if (!coff_write_native_symbol (abfd, c_symbol, &written,
					 &string_size, &debug_string_section,
					 &debug_string_size))
	    return FALSE;
	}
    }

  obj_raw_syment_count (abfd) = written;

  /* Now write out strings */

  if (string_size != 0)
    {
      unsigned int size = string_size + STRING_SIZE_SIZE;
      bfd_byte buffer[STRING_SIZE_SIZE];

#if STRING_SIZE_SIZE == 4
      H_PUT_32 (abfd, size, buffer);
#else
 #error Change H_PUT_32
#endif
      if (bfd_bwrite ((PTR) buffer, (bfd_size_type) sizeof (buffer), abfd)
	  != sizeof (buffer))
	return FALSE;

      /* Handle long section names.  This code must handle section
	 names just as they are handled in coff_write_object_contents.  */
      if (bfd_coff_long_section_names (abfd))
	{
	  asection *o;

	  for (o = abfd->sections; o != NULL; o = o->next)
	    {
	      size_t len;

	      len = strlen (o->name);
	      if (len > SCNNMLEN)
		{
		  if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd)
		      != len + 1)
		    return FALSE;
		}
	    }
	}

      for (p = abfd->outsymbols, i = 0;
	   i < limit;
	   i++, p++)
	{
	  asymbol *q = *p;
	  size_t name_length = strlen (q->name);
	  coff_symbol_type *c_symbol = coff_symbol_from (abfd, q);
	  size_t maxlen;

	  /* Figure out whether the symbol name should go in the string
	     table.  Symbol names that are short enough are stored
	     directly in the syment structure.  File names permit a
	     different, longer, length in the syment structure.  On
	     XCOFF, some symbol names are stored in the .debug section
	     rather than in the string table.  */

	  if (c_symbol == NULL
	      || c_symbol->native == NULL)
	    {
	      /* This is not a COFF symbol, so it certainly is not a
	         file name, nor does it go in the .debug section.  */
	      maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
	    }
	  else if (bfd_coff_symname_in_debug (abfd,
					      &c_symbol->native->u.syment))
	    {
	      /* This symbol name is in the XCOFF .debug section.
	         Don't write it into the string table.  */
	      maxlen = name_length;
	    }
	  else if (c_symbol->native->u.syment.n_sclass == C_FILE
		   && c_symbol->native->u.syment.n_numaux > 0)
	    {
	      if (bfd_coff_force_symnames_in_strings (abfd))
		{
		  if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6)
		    return FALSE;
		}
	      maxlen = bfd_coff_filnmlen (abfd);
	    }
	  else
	    maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;

	  if (name_length > maxlen)
	    {
	      if (bfd_bwrite ((PTR) (q->name), (bfd_size_type) name_length + 1,
			     abfd) != name_length + 1)
		return FALSE;
	    }
	}
    }
  else
    {
      /* We would normally not write anything here, but we'll write
         out 4 so that any stupid coff reader which tries to read the
         string table even when there isn't one won't croak.  */
      unsigned int size = STRING_SIZE_SIZE;
      bfd_byte buffer[STRING_SIZE_SIZE];

#if STRING_SIZE_SIZE == 4
      H_PUT_32 (abfd, size, buffer);
#else
 #error Change H_PUT_32
#endif
      if (bfd_bwrite ((PTR) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd)
	  != STRING_SIZE_SIZE)
	return FALSE;
    }

  /* Make sure the .debug section was created to be the correct size.
     We should create it ourselves on the fly, but we don't because
     BFD won't let us write to any section until we know how large all
     the sections are.  We could still do it by making another pass
     over the symbols.  FIXME.  */
  BFD_ASSERT (debug_string_size == 0
	      || (debug_string_section != (asection *) NULL
		  && (BFD_ALIGN (debug_string_size,
				 1 << debug_string_section->alignment_power)
		      == bfd_section_size (abfd, debug_string_section))));

  return TRUE;
}

bfd_boolean
coff_write_linenumbers (abfd)
     bfd *abfd;
{
  asection *s;
  bfd_size_type linesz;
  PTR buff;

  linesz = bfd_coff_linesz (abfd);
  buff = bfd_alloc (abfd, linesz);
  if (!buff)
    return FALSE;
  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
    {
      if (s->lineno_count)
	{
	  asymbol **q = abfd->outsymbols;
	  if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0)
	    return FALSE;
	  /* Find all the linenumbers in this section */
	  while (*q)
	    {
	      asymbol *p = *q;
	      if (p->section->output_section == s)
		{
		  alent *l =
		  BFD_SEND (bfd_asymbol_bfd (p), _get_lineno,
			    (bfd_asymbol_bfd (p), p));
		  if (l)
		    {
		      /* Found a linenumber entry, output */
		      struct internal_lineno out;
		      memset ((PTR) & out, 0, sizeof (out));
		      out.l_lnno = 0;
		      out.l_addr.l_symndx = l->u.offset;
		      bfd_coff_swap_lineno_out (abfd, &out, buff);
		      if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd)
			  != linesz)
			return FALSE;
		      l++;
		      while (l->line_number)
			{
			  out.l_lnno = l->line_number;
			  out.l_addr.l_symndx = l->u.offset;
			  bfd_coff_swap_lineno_out (abfd, &out, buff);
			  if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd)
			      != linesz)
			    return FALSE;
			  l++;
			}
		    }
		}
	      q++;
	    }
	}
    }
  bfd_release (abfd, buff);
  return TRUE;
}

alent *
coff_get_lineno (ignore_abfd, symbol)
     bfd *ignore_abfd ATTRIBUTE_UNUSED;
     asymbol *symbol;
{
  return coffsymbol (symbol)->lineno;
}

#if 0

/* This is only called from coff_add_missing_symbols, which has been
   disabled.  */

asymbol *
coff_section_symbol (abfd, name)
     bfd *abfd;
     char *name;
{
  asection *sec = bfd_make_section_old_way (abfd, name);
  asymbol *sym;
  combined_entry_type *csym;

  sym = sec->symbol;
  csym = coff_symbol_from (abfd, sym)->native;
  /* Make sure back-end COFF stuff is there.  */
  if (csym == 0)
    {
      struct foo
	{
	  coff_symbol_type sym;
	  /* @@FIXME This shouldn't use a fixed size!!  */
	  combined_entry_type e[10];
	};
      struct foo *f;

      f = (struct foo *) bfd_zalloc (abfd, (bfd_size_type) sizeof (*f));
      if (!f)
	{
	  bfd_set_error (bfd_error_no_error);
	  return NULL;
	}
      coff_symbol_from (abfd, sym)->native = csym = f->e;
    }
  csym[0].u.syment.n_sclass = C_STAT;
  csym[0].u.syment.n_numaux = 1;
/*  SF_SET_STATICS (sym);       @@ ??? */
  csym[1].u.auxent.x_scn.x_scnlen = sec->_raw_size;
  csym[1].u.auxent.x_scn.x_nreloc = sec->reloc_count;
  csym[1].u.auxent.x_scn.x_nlinno = sec->lineno_count;

  if (sec->output_section == NULL)
    {
      sec->output_section = sec;
      sec->output_offset = 0;
    }

  return sym;
}

#endif /* 0 */

/* This function transforms the offsets into the symbol table into
   pointers to syments.  */

static void
coff_pointerize_aux (abfd, table_base, symbol, indaux, auxent)
     bfd *abfd;
     combined_entry_type *table_base;
     combined_entry_type *symbol;
     unsigned int indaux;
     combined_entry_type *auxent;
{
  unsigned int type = symbol->u.syment.n_type;
  unsigned int class = symbol->u.syment.n_sclass;

  if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
    {
      if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
	  (abfd, table_base, symbol, indaux, auxent))
	return;
    }

  /* Don't bother if this is a file or a section */
  if (class == C_STAT && type == T_NULL)
    return;
  if (class == C_FILE)
    return;

  /* Otherwise patch up */
#define N_TMASK coff_data (abfd)->local_n_tmask
#define N_BTSHFT coff_data (abfd)->local_n_btshft
  if ((ISFCN (type) || ISTAG (class) || class == C_BLOCK || class == C_FCN)
      && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0)
    {
      auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p =
	table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
      auxent->fix_end = 1;
    }
  /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can
     generate one, so we must be careful to ignore it.  */
  if (auxent->u.auxent.x_sym.x_tagndx.l > 0)
    {
      auxent->u.auxent.x_sym.x_tagndx.p =
	table_base + auxent->u.auxent.x_sym.x_tagndx.l;
      auxent->fix_tag = 1;
    }
}

/* Allocate space for the ".debug" section, and read it.
   We did not read the debug section until now, because
   we didn't want to go to the trouble until someone needed it.  */

static char *
build_debug_section (abfd)
     bfd *abfd;
{
  char *debug_section;
  file_ptr position;
  bfd_size_type sec_size;

  asection *sect = bfd_get_section_by_name (abfd, ".debug");

  if (!sect)
    {
      bfd_set_error (bfd_error_no_debug_section);
      return NULL;
    }

  sec_size = bfd_get_section_size_before_reloc (sect);
  debug_section = (PTR) bfd_alloc (abfd, sec_size);
  if (debug_section == NULL)
    return NULL;

  /* Seek to the beginning of the `.debug' section and read it.
     Save the current position first; it is needed by our caller.
     Then read debug section and reset the file pointer.  */

  position = bfd_tell (abfd);
  if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0
      || bfd_bread (debug_section, sec_size, abfd) != sec_size
      || bfd_seek (abfd, position, SEEK_SET) != 0)
    return NULL;
  return debug_section;
}

/* Return a pointer to a malloc'd copy of 'name'.  'name' may not be
   \0-terminated, but will not exceed 'maxlen' characters.  The copy *will*
   be \0-terminated.  */
static char *
copy_name (abfd, name, maxlen)
     bfd *abfd;
     char *name;
     size_t maxlen;
{
  size_t len;
  char *newname;

  for (len = 0; len < maxlen; ++len)
    {
      if (name[len] == '\0')
	{
	  break;
	}
    }

  if ((newname = (PTR) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL)
    return (NULL);
  strncpy (newname, name, len);
  newname[len] = '\0';
  return newname;
}

/* Read in the external symbols.  */

bfd_boolean
_bfd_coff_get_external_symbols (abfd)
     bfd *abfd;
{
  bfd_size_type symesz;
  bfd_size_type size;
  PTR syms;

  if (obj_coff_external_syms (abfd) != NULL)
    return TRUE;

  symesz = bfd_coff_symesz (abfd);

  size = obj_raw_syment_count (abfd) * symesz;

  syms = (PTR) bfd_malloc (size);
  if (syms == NULL && size != 0)
    return FALSE;

  if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
      || bfd_bread (syms, size, abfd) != size)
    {
      if (syms != NULL)
	free (syms);
      return FALSE;
    }

  obj_coff_external_syms (abfd) = syms;

  return TRUE;
}

/* Read in the external strings.  The strings are not loaded until
   they are needed.  This is because we have no simple way of
   detecting a missing string table in an archive.  */

const char *
_bfd_coff_read_string_table (abfd)
     bfd *abfd;
{
  char extstrsize[STRING_SIZE_SIZE];
  bfd_size_type strsize;
  char *strings;
  file_ptr pos;

  if (obj_coff_strings (abfd) != NULL)
    return obj_coff_strings (abfd);

  if (obj_sym_filepos (abfd) == 0)
    {
      bfd_set_error (bfd_error_no_symbols);
      return NULL;
    }

  pos = obj_sym_filepos (abfd);
  pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
  if (bfd_seek (abfd, pos, SEEK_SET) != 0)
    return NULL;

  if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd)
      != sizeof extstrsize)
    {
      if (bfd_get_error () != bfd_error_file_truncated)
	return NULL;

      /* There is no string table.  */
      strsize = STRING_SIZE_SIZE;
    }
  else
    {
#if STRING_SIZE_SIZE == 4
      strsize = H_GET_32 (abfd, extstrsize);
#else
 #error Change H_GET_32
#endif
    }

  if (strsize < STRING_SIZE_SIZE)
    {
      (*_bfd_error_handler)
	(_("%s: bad string table size %lu"), bfd_archive_filename (abfd),
	 (unsigned long) strsize);
      bfd_set_error (bfd_error_bad_value);
      return NULL;
    }

  strings = (char *) bfd_malloc (strsize);
  if (strings == NULL)
    return NULL;

  if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd)
      != strsize - STRING_SIZE_SIZE)
    {
      free (strings);
      return NULL;
    }

  obj_coff_strings (abfd) = strings;

  return strings;
}

/* Free up the external symbols and strings read from a COFF file.  */

bfd_boolean
_bfd_coff_free_symbols (abfd)
     bfd *abfd;
{
  if (obj_coff_external_syms (abfd) != NULL
      && ! obj_coff_keep_syms (abfd))
    {
      free (obj_coff_external_syms (abfd));
      obj_coff_external_syms (abfd) = NULL;
    }
  if (obj_coff_strings (abfd) != NULL
      && ! obj_coff_keep_strings (abfd))
    {
      free (obj_coff_strings (abfd));
      obj_coff_strings (abfd) = NULL;
    }
  return TRUE;
}

/* Read a symbol table into freshly bfd_allocated memory, swap it, and
   knit the symbol names into a normalized form.  By normalized here I
   mean that all symbols have an n_offset pointer that points to a null-
   terminated string.  */

combined_entry_type *
coff_get_normalized_symtab (abfd)
     bfd *abfd;
{
  combined_entry_type *internal;
  combined_entry_type *internal_ptr;
  combined_entry_type *symbol_ptr;
  combined_entry_type *internal_end;
  size_t symesz;
  char *raw_src;
  char *raw_end;
  const char *string_table = NULL;
  char *debug_section = NULL;
  bfd_size_type size;

  if (obj_raw_syments (abfd) != NULL)
    return obj_raw_syments (abfd);

  size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type);
  internal = (combined_entry_type *) bfd_zalloc (abfd, size);
  if (internal == NULL && size != 0)
    return NULL;
  internal_end = internal + obj_raw_syment_count (abfd);

  if (! _bfd_coff_get_external_symbols (abfd))
    return NULL;

  raw_src = (char *) obj_coff_external_syms (abfd);

  /* mark the end of the symbols */
  symesz = bfd_coff_symesz (abfd);
  raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz;

  /* FIXME SOMEDAY.  A string table size of zero is very weird, but
     probably possible.  If one shows up, it will probably kill us.  */

  /* Swap all the raw entries */
  for (internal_ptr = internal;
       raw_src < raw_end;
       raw_src += symesz, internal_ptr++)
    {

      unsigned int i;
      bfd_coff_swap_sym_in (abfd, (PTR) raw_src,
			    (PTR) & internal_ptr->u.syment);
      symbol_ptr = internal_ptr;

      for (i = 0;
	   i < symbol_ptr->u.syment.n_numaux;
	   i++)
	{
	  internal_ptr++;
	  raw_src += symesz;
	  bfd_coff_swap_aux_in (abfd, (PTR) raw_src,
				symbol_ptr->u.syment.n_type,
				symbol_ptr->u.syment.n_sclass,
				(int) i, symbol_ptr->u.syment.n_numaux,
				&(internal_ptr->u.auxent));
	  coff_pointerize_aux (abfd, internal, symbol_ptr, i,
			       internal_ptr);
	}
    }

  /* Free the raw symbols, but not the strings (if we have them).  */
  obj_coff_keep_strings (abfd) = TRUE;
  if (! _bfd_coff_free_symbols (abfd))
    return NULL;

  for (internal_ptr = internal; internal_ptr < internal_end;
       internal_ptr++)
    {
      if (internal_ptr->u.syment.n_sclass == C_FILE
	  && internal_ptr->u.syment.n_numaux > 0)
	{
	  /* make a file symbol point to the name in the auxent, since
	     the text ".file" is redundant */
	  if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0)
	    {
	      /* the filename is a long one, point into the string table */
	      if (string_table == NULL)
		{
		  string_table = _bfd_coff_read_string_table (abfd);
		  if (string_table == NULL)
		    return NULL;
		}

	      internal_ptr->u.syment._n._n_n._n_offset =
		((long)
		 (string_table
		  + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset));
	    }
	  else
	    {
	      /* Ordinary short filename, put into memory anyway.  The
                 Microsoft PE tools sometimes store a filename in
                 multiple AUX entries.  */
	      if (internal_ptr->u.syment.n_numaux > 1
		  && coff_data (abfd)->pe)
		{
		  internal_ptr->u.syment._n._n_n._n_offset =
		    ((long)
		     copy_name (abfd,
				(internal_ptr + 1)->u.auxent.x_file.x_fname,
				internal_ptr->u.syment.n_numaux * symesz));
		}
	      else
		{
		  internal_ptr->u.syment._n._n_n._n_offset =
		    ((long)
		     copy_name (abfd,
				(internal_ptr + 1)->u.auxent.x_file.x_fname,
				(size_t) bfd_coff_filnmlen (abfd)));
		}
	    }
	}
      else
	{
	  if (internal_ptr->u.syment._n._n_n._n_zeroes != 0)
	    {
	      /* This is a "short" name.  Make it long.  */
	      size_t i;
	      char *newstring;

	      /* find the length of this string without walking into memory
	         that isn't ours.  */
	      for (i = 0; i < 8; ++i)
		if (internal_ptr->u.syment._n._n_name[i] == '\0')
		  break;

	      newstring = (PTR) bfd_zalloc (abfd, (bfd_size_type) (i + 1));
	      if (newstring == NULL)
		return (NULL);
	      strncpy (newstring, internal_ptr->u.syment._n._n_name, i);
	      internal_ptr->u.syment._n._n_n._n_offset = (long int) newstring;
	      internal_ptr->u.syment._n._n_n._n_zeroes = 0;
	    }
	  else if (internal_ptr->u.syment._n._n_n._n_offset == 0)
	    internal_ptr->u.syment._n._n_n._n_offset = (long int) "";
	  else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment))
	    {
	      /* Long name already.  Point symbol at the string in the
                 table.  */
	      if (string_table == NULL)
		{
		  string_table = _bfd_coff_read_string_table (abfd);
		  if (string_table == NULL)
		    return NULL;
		}
	      internal_ptr->u.syment._n._n_n._n_offset =
		((long int)
		 (string_table
		  + internal_ptr->u.syment._n._n_n._n_offset));
	    }
	  else
	    {
	      /* Long name in debug section.  Very similar.  */
	      if (debug_section == NULL)
		debug_section = build_debug_section (abfd);
	      internal_ptr->u.syment._n._n_n._n_offset = (long int)
		(debug_section + internal_ptr->u.syment._n._n_n._n_offset);
	    }
	}
      internal_ptr += internal_ptr->u.syment.n_numaux;
    }

  obj_raw_syments (abfd) = internal;
  BFD_ASSERT (obj_raw_syment_count (abfd)
	      == (unsigned int) (internal_ptr - internal));

  return (internal);
}				/* coff_get_normalized_symtab() */

long
coff_get_reloc_upper_bound (abfd, asect)
     bfd *abfd;
     sec_ptr asect;
{
  if (bfd_get_format (abfd) != bfd_object)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return -1;
    }
  return (asect->reloc_count + 1) * sizeof (arelent *);
}

asymbol *
coff_make_empty_symbol (abfd)
     bfd *abfd;
{
  bfd_size_type amt = sizeof (coff_symbol_type);
  coff_symbol_type *new = (coff_symbol_type *) bfd_zalloc (abfd, amt);
  if (new == NULL)
    return (NULL);
  new->symbol.section = 0;
  new->native = 0;
  new->lineno = (alent *) NULL;
  new->done_lineno = FALSE;
  new->symbol.the_bfd = abfd;
  return &new->symbol;
}

/* Make a debugging symbol.  */

asymbol *
coff_bfd_make_debug_symbol (abfd, ptr, sz)
     bfd *abfd;
     PTR ptr ATTRIBUTE_UNUSED;
     unsigned long sz ATTRIBUTE_UNUSED;
{
  bfd_size_type amt = sizeof (coff_symbol_type);
  coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, amt);
  if (new == NULL)
    return (NULL);
  /* @@ The 10 is a guess at a plausible maximum number of aux entries
     (but shouldn't be a constant).  */
  amt = sizeof (combined_entry_type) * 10;
  new->native = (combined_entry_type *) bfd_zalloc (abfd, amt);
  if (!new->native)
    return (NULL);
  new->symbol.section = bfd_abs_section_ptr;
  new->symbol.flags = BSF_DEBUGGING;
  new->lineno = (alent *) NULL;
  new->done_lineno = FALSE;
  new->symbol.the_bfd = abfd;
  return &new->symbol;
}

void
coff_get_symbol_info (abfd, symbol, ret)
     bfd *abfd;
     asymbol *symbol;
     symbol_info *ret;
{
  bfd_symbol_info (symbol, ret);
  if (coffsymbol (symbol)->native != NULL
      && coffsymbol (symbol)->native->fix_value)
    {
      ret->value = coffsymbol (symbol)->native->u.syment.n_value -
	(unsigned long) obj_raw_syments (abfd);
    }
}

/* Return the COFF syment for a symbol.  */

bfd_boolean
bfd_coff_get_syment (abfd, symbol, psyment)
     bfd *abfd;
     asymbol *symbol;
     struct internal_syment *psyment;
{
  coff_symbol_type *csym;

  csym = coff_symbol_from (abfd, symbol);
  if (csym == NULL || csym->native == NULL)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return FALSE;
    }

  *psyment = csym->native->u.syment;

  if (csym->native->fix_value)
    psyment->n_value = psyment->n_value -
      (unsigned long) obj_raw_syments (abfd);

  /* FIXME: We should handle fix_line here.  */

  return TRUE;
}

/* Return the COFF auxent for a symbol.  */

bfd_boolean
bfd_coff_get_auxent (abfd, symbol, indx, pauxent)
     bfd *abfd;
     asymbol *symbol;
     int indx;
     union internal_auxent *pauxent;
{
  coff_symbol_type *csym;
  combined_entry_type *ent;

  csym = coff_symbol_from (abfd, symbol);

  if (csym == NULL
      || csym->native == NULL
      || indx >= csym->native->u.syment.n_numaux)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return FALSE;
    }

  ent = csym->native + indx + 1;

  *pauxent = ent->u.auxent;

  if (ent->fix_tag)
    pauxent->x_sym.x_tagndx.l =
      ((combined_entry_type *) pauxent->x_sym.x_tagndx.p
       - obj_raw_syments (abfd));

  if (ent->fix_end)
    pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l =
      ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p
       - obj_raw_syments (abfd));

  if (ent->fix_scnlen)
    pauxent->x_csect.x_scnlen.l =
      ((combined_entry_type *) pauxent->x_csect.x_scnlen.p
       - obj_raw_syments (abfd));

  return TRUE;
}

/* Print out information about COFF symbol.  */

void
coff_print_symbol (abfd, filep, symbol, how)
     bfd *abfd;
     PTR filep;
     asymbol *symbol;
     bfd_print_symbol_type how;
{
  FILE *file = (FILE *) filep;

  switch (how)
    {
    case bfd_print_symbol_name:
      fprintf (file, "%s", symbol->name);
      break;

    case bfd_print_symbol_more:
      fprintf (file, "coff %s %s",
	       coffsymbol (symbol)->native ? "n" : "g",
	       coffsymbol (symbol)->lineno ? "l" : " ");
      break;

    case bfd_print_symbol_all:
      if (coffsymbol (symbol)->native)
	{
	  bfd_vma val;
	  unsigned int aux;
	  combined_entry_type *combined = coffsymbol (symbol)->native;
	  combined_entry_type *root = obj_raw_syments (abfd);
	  struct lineno_cache_entry *l = coffsymbol (symbol)->lineno;

	  fprintf (file, "[%3ld]", (long) (combined - root));

	  if (! combined->fix_value)
	    val = (bfd_vma) combined->u.syment.n_value;
	  else
	    val = combined->u.syment.n_value - (unsigned long) root;

#ifndef XCOFF64
	  fprintf (file,
		   "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%08lx %s",
		   combined->u.syment.n_scnum,
		   combined->u.syment.n_flags,
		   combined->u.syment.n_type,
		   combined->u.syment.n_sclass,
		   combined->u.syment.n_numaux,
		   (unsigned long) val,
		   symbol->name);
#else
	  /* Print out the wide, 64 bit, symbol value */
	  fprintf (file,
		   "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%016llx %s",
		   combined->u.syment.n_scnum,
		   combined->u.syment.n_flags,
		   combined->u.syment.n_type,
		   combined->u.syment.n_sclass,
		   combined->u.syment.n_numaux,
		   val,
		   symbol->name);
#endif

	  for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
	    {
	      combined_entry_type *auxp = combined + aux + 1;
	      long tagndx;

	      if (auxp->fix_tag)
		tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root;
	      else
		tagndx = auxp->u.auxent.x_sym.x_tagndx.l;

	      fprintf (file, "\n");

	      if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux))
		continue;

	      switch (combined->u.syment.n_sclass)
		{
		case C_FILE:
		  fprintf (file, "File ");
		  break;

		case C_STAT:
		  if (combined->u.syment.n_type == T_NULL)
		    /* probably a section symbol? */
		    {
		      fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d",
			       (long) auxp->u.auxent.x_scn.x_scnlen,
			       auxp->u.auxent.x_scn.x_nreloc,
			       auxp->u.auxent.x_scn.x_nlinno);
		      if (auxp->u.auxent.x_scn.x_checksum != 0
			  || auxp->u.auxent.x_scn.x_associated != 0
			  || auxp->u.auxent.x_scn.x_comdat != 0)
			fprintf (file, " checksum 0x%lx assoc %d comdat %d",
				 auxp->u.auxent.x_scn.x_checksum,
				 auxp->u.auxent.x_scn.x_associated,
				 auxp->u.auxent.x_scn.x_comdat);
		      break;
		    }
		    /* else fall through */
		case C_EXT:
		  if (ISFCN (combined->u.syment.n_type))
		    {
		      long next, llnos;

		      if (auxp->fix_end)
			next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p
			       - root);
		      else
			next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
		      llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr;
		      fprintf (file,
			       "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld",
			       tagndx, auxp->u.auxent.x_sym.x_misc.x_fsize,
			       llnos, next);
		      break;
		    }
		  /* else fall through */
		default:
		  fprintf (file, "AUX lnno %d size 0x%x tagndx %ld",
			   auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
			   auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size,
			   tagndx);
		  if (auxp->fix_end)
		    fprintf (file, " endndx %ld",
			     ((long)
			      (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p
			       - root)));
		  break;
		}
	    }

	  if (l)
	    {
	      fprintf (file, "\n%s :", l->u.sym->name);
	      l++;
	      while (l->line_number)
		{
		  fprintf (file, "\n%4d : 0x%lx",
			   l->line_number,
			   ((unsigned long)
			    (l->u.offset + symbol->section->vma)));
		  l++;
		}
	    }
	}
      else
	{
	  bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
	  fprintf (file, " %-5s %s %s %s",
		   symbol->section->name,
		   coffsymbol (symbol)->native ? "n" : "g",
		   coffsymbol (symbol)->lineno ? "l" : " ",
		   symbol->name);
	}
    }
}

/* Return whether a symbol name implies a local symbol.  In COFF,
   local symbols generally start with ``.L''.  Most targets use this
   function for the is_local_label_name entry point, but some may
   override it.  */

bfd_boolean
_bfd_coff_is_local_label_name (abfd, name)
     bfd *abfd ATTRIBUTE_UNUSED;
     const char *name;
{
  return name[0] == '.' && name[1] == 'L';
}

/* Provided a BFD, a section and an offset (in bytes, not octets) into the
   section, calculate and return the name of the source file and the line
   nearest to the wanted location.  */

bfd_boolean
coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
			functionname_ptr, line_ptr)
     bfd *abfd;
     asection *section;
     asymbol **symbols;
     bfd_vma offset;
     const char **filename_ptr;
     const char **functionname_ptr;
     unsigned int *line_ptr;
{
  bfd_boolean found;
  unsigned int i;
  unsigned int line_base;
  coff_data_type *cof = coff_data (abfd);
  /* Run through the raw syments if available */
  combined_entry_type *p;
  combined_entry_type *pend;
  alent *l;
  struct coff_section_tdata *sec_data;
  bfd_size_type amt;

  /* Before looking through the symbol table, try to use a .stab
     section to find the information.  */
  if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
					     &found, filename_ptr,
					     functionname_ptr, line_ptr,
					     &coff_data(abfd)->line_info))
    return FALSE;

  if (found)
    return TRUE;

  /* Also try examining DWARF2 debugging information.  */
  if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
				     filename_ptr, functionname_ptr,
				     line_ptr, 0,
				     &coff_data(abfd)->dwarf2_find_line_info))
    return TRUE;

  *filename_ptr = 0;
  *functionname_ptr = 0;
  *line_ptr = 0;

  /* Don't try and find line numbers in a non coff file */
  if (!bfd_family_coff (abfd))
    return FALSE;

  if (cof == NULL)
    return FALSE;

  /* Find the first C_FILE symbol.  */
  p = cof->raw_syments;
  if (!p)
    return FALSE;

  pend = p + cof->raw_syment_count;
  while (p < pend)
    {
      if (p->u.syment.n_sclass == C_FILE)
	break;
      p += 1 + p->u.syment.n_numaux;
    }

  if (p < pend)
    {
      bfd_vma sec_vma;
      bfd_vma maxdiff;

      /* Look through the C_FILE symbols to find the best one.  */
      sec_vma = bfd_get_section_vma (abfd, section);
      *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
      maxdiff = (bfd_vma) 0 - (bfd_vma) 1;
      while (1)
	{
	  combined_entry_type *p2;

	  for (p2 = p + 1 + p->u.syment.n_numaux;
	       p2 < pend;
	       p2 += 1 + p2->u.syment.n_numaux)
	    {
	      if (p2->u.syment.n_scnum > 0
		  && (section
		      == coff_section_from_bfd_index (abfd,
						      p2->u.syment.n_scnum)))
		break;
	      if (p2->u.syment.n_sclass == C_FILE)
		{
		  p2 = pend;
		  break;
		}
	    }

	  /* We use <= MAXDIFF here so that if we get a zero length
             file, we actually use the next file entry.  */
	  if (p2 < pend
	      && offset + sec_vma >= (bfd_vma) p2->u.syment.n_value
	      && offset + sec_vma - (bfd_vma) p2->u.syment.n_value <= maxdiff)
	    {
	      *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
	      maxdiff = offset + sec_vma - p2->u.syment.n_value;
	    }

	  /* Avoid endless loops on erroneous files by ensuring that
	     we always move forward in the file.  */
	  if (p >= cof->raw_syments + p->u.syment.n_value)
	    break;

	  p = cof->raw_syments + p->u.syment.n_value;
	  if (p > pend || p->u.syment.n_sclass != C_FILE)
	    break;
	}
    }

  /* Now wander though the raw linenumbers of the section */
  /* If we have been called on this section before, and the offset we
     want is further down then we can prime the lookup loop.  */
  sec_data = coff_section_data (abfd, section);
  if (sec_data != NULL
      && sec_data->i > 0
      && offset >= sec_data->offset)
    {
      i = sec_data->i;
      *functionname_ptr = sec_data->function;
      line_base = sec_data->line_base;
    }
  else
    {
      i = 0;
      line_base = 0;
    }

  if (section->lineno != NULL)
    {
      bfd_vma last_value = 0;

      l = &section->lineno[i];

      for (; i < section->lineno_count; i++)
	{
	  if (l->line_number == 0)
	    {
	      /* Get the symbol this line number points at */
	      coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
	      if (coff->symbol.value > offset)
		break;
	      *functionname_ptr = coff->symbol.name;
	      last_value = coff->symbol.value;
	      if (coff->native)
		{
		  combined_entry_type *s = coff->native;
		  s = s + 1 + s->u.syment.n_numaux;

		  /* In XCOFF a debugging symbol can follow the
		     function symbol.  */
		  if (s->u.syment.n_scnum == N_DEBUG)
		    s = s + 1 + s->u.syment.n_numaux;

		  /* S should now point to the .bf of the function.  */
		  if (s->u.syment.n_numaux)
		    {
		      /* The linenumber is stored in the auxent.  */
		      union internal_auxent *a = &((s + 1)->u.auxent);
		      line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
		      *line_ptr = line_base;
		    }
		}
	    }
	  else
	    {
	      if (l->u.offset > offset)
		break;
	      *line_ptr = l->line_number + line_base - 1;
	    }
	  l++;
	}

      /* If we fell off the end of the loop, then assume that this
	 symbol has no line number info.  Otherwise, symbols with no
	 line number info get reported with the line number of the
	 last line of the last symbol which does have line number
	 info.  We use 0x100 as a slop to account for cases where the
	 last line has executable code.  */
      if (i >= section->lineno_count
	  && last_value != 0
	  && offset - last_value > 0x100)
	{
	  *functionname_ptr = NULL;
	  *line_ptr = 0;
	}
    }

  /* Cache the results for the next call.  */
  if (sec_data == NULL && section->owner == abfd)
    {
      amt = sizeof (struct coff_section_tdata);
      section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
      sec_data = (struct coff_section_tdata *) section->used_by_bfd;
    }
  if (sec_data != NULL)
    {
      sec_data->offset = offset;
      sec_data->i = i;
      sec_data->function = *functionname_ptr;
      sec_data->line_base = line_base;
    }

  return TRUE;
}

int
coff_sizeof_headers (abfd, reloc)
     bfd *abfd;
     bfd_boolean reloc;
{
  size_t size;

  if (! reloc)
    {
      size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
    }
  else
    {
      size = bfd_coff_filhsz (abfd);
    }

  size += abfd->section_count * bfd_coff_scnhsz (abfd);
  return size;
}

/* Change the class of a coff symbol held by BFD.  */
bfd_boolean
bfd_coff_set_symbol_class (abfd, symbol, class)
     bfd *         abfd;
     asymbol *     symbol;
     unsigned int  class;
{
  coff_symbol_type * csym;

  csym = coff_symbol_from (abfd, symbol);
  if (csym == NULL)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return FALSE;
    }
  else if (csym->native == NULL)
    {
      /* This is an alien symbol which no native coff backend data.
	 We cheat here by creating a fake native entry for it and
	 then filling in the class.  This code is based on that in
	 coff_write_alien_symbol().  */

      combined_entry_type * native;
      bfd_size_type amt = sizeof (* native);

      native = (combined_entry_type *) bfd_zalloc (abfd, amt);
      if (native == NULL)
	return FALSE;

      native->u.syment.n_type   = T_NULL;
      native->u.syment.n_sclass = class;

      if (bfd_is_und_section (symbol->section))
	{
	  native->u.syment.n_scnum = N_UNDEF;
	  native->u.syment.n_value = symbol->value;
	}
      else if (bfd_is_com_section (symbol->section))
	{
	  native->u.syment.n_scnum = N_UNDEF;
	  native->u.syment.n_value = symbol->value;
	}
      else
	{
	  native->u.syment.n_scnum =
	    symbol->section->output_section->target_index;
	  native->u.syment.n_value = (symbol->value
				      + symbol->section->output_offset);
	  if (! obj_pe (abfd))
	    native->u.syment.n_value += symbol->section->output_section->vma;

	  /* Copy the any flags from the file header into the symbol.
	     FIXME: Why?  */
	  native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags;
	}

      csym->native = native;
    }
  else
    {
      csym->native->u.syment.n_sclass = class;
    }

  return TRUE;
}