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
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
|
/* ELF executable support for BFD.
Copyright 1993 Free Software Foundation, Inc.
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. */
/*
SECTION
ELF backends
BFD support for ELF formats is being worked on.
Currently, the best supported back ends are for sparc and i386
(running svr4 or Solaris 2).
Documentation of the internals of the support code still needs
to be written. The code is changing quickly enough that we
haven't bothered yet.
*/
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#define ARCH_SIZE 0
#include "libelf.h"
static file_ptr map_program_segments PARAMS ((bfd *, file_ptr,
Elf_Internal_Shdr *,
Elf_Internal_Shdr **,
bfd_size_type));
static boolean assign_file_positions_except_relocs PARAMS ((bfd *, boolean));
static boolean prep_headers PARAMS ((bfd *));
static boolean swap_out_syms PARAMS ((bfd *, struct bfd_strtab_hash **));
/* Standard ELF hash function. Do not change this function; you will
cause invalid hash tables to be generated. (Well, you would if this
were being used yet.) */
unsigned long
bfd_elf_hash (name)
CONST unsigned char *name;
{
unsigned long h = 0;
unsigned long g;
int ch;
while ((ch = *name++) != '\0')
{
h = (h << 4) + ch;
if ((g = (h & 0xf0000000)) != 0)
{
h ^= g >> 24;
h &= ~g;
}
}
return h;
}
/* Read a specified number of bytes at a specified offset in an ELF
file, into a newly allocated buffer, and return a pointer to the
buffer. */
static char *
elf_read (abfd, offset, size)
bfd * abfd;
long offset;
int size;
{
char *buf;
if ((buf = bfd_alloc (abfd, size)) == NULL)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
if (bfd_seek (abfd, offset, SEEK_SET) == -1)
return NULL;
if (bfd_read ((PTR) buf, size, 1, abfd) != size)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_file_truncated);
return NULL;
}
return buf;
}
boolean
elf_mkobject (abfd)
bfd * abfd;
{
/* this just does initialization */
/* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
elf_tdata (abfd) = (struct elf_obj_tdata *)
bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
if (elf_tdata (abfd) == 0)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
/* since everything is done at close time, do we need any
initialization? */
return true;
}
char *
bfd_elf_get_str_section (abfd, shindex)
bfd * abfd;
unsigned int shindex;
{
Elf_Internal_Shdr **i_shdrp;
char *shstrtab = NULL;
unsigned int offset;
unsigned int shstrtabsize;
i_shdrp = elf_elfsections (abfd);
if (i_shdrp == 0 || i_shdrp[shindex] == 0)
return 0;
shstrtab = (char *) i_shdrp[shindex]->contents;
if (shstrtab == NULL)
{
/* No cached one, attempt to read, and cache what we read. */
offset = i_shdrp[shindex]->sh_offset;
shstrtabsize = i_shdrp[shindex]->sh_size;
shstrtab = elf_read (abfd, offset, shstrtabsize);
i_shdrp[shindex]->contents = (PTR) shstrtab;
}
return shstrtab;
}
char *
bfd_elf_string_from_elf_section (abfd, shindex, strindex)
bfd * abfd;
unsigned int shindex;
unsigned int strindex;
{
Elf_Internal_Shdr *hdr;
if (strindex == 0)
return "";
hdr = elf_elfsections (abfd)[shindex];
if (hdr->contents == NULL
&& bfd_elf_get_str_section (abfd, shindex) == NULL)
return NULL;
return ((char *) hdr->contents) + strindex;
}
/* Make a BFD section from an ELF section. We store a pointer to the
BFD section in the bfd_section field of the header. */
boolean
_bfd_elf_make_section_from_shdr (abfd, hdr, name)
bfd *abfd;
Elf_Internal_Shdr *hdr;
const char *name;
{
asection *newsect;
flagword flags;
if (hdr->bfd_section != NULL)
{
BFD_ASSERT (strcmp (name,
bfd_get_section_name (abfd, hdr->bfd_section)) == 0);
return true;
}
newsect = bfd_make_section_anyway (abfd, name);
if (newsect == NULL)
return false;
newsect->filepos = hdr->sh_offset;
if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
|| ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
|| ! bfd_set_section_alignment (abfd, newsect,
bfd_log2 (hdr->sh_addralign)))
return false;
flags = SEC_NO_FLAGS;
if (hdr->sh_type != SHT_NOBITS)
flags |= SEC_HAS_CONTENTS;
if ((hdr->sh_flags & SHF_ALLOC) != 0)
{
flags |= SEC_ALLOC;
if (hdr->sh_type != SHT_NOBITS)
flags |= SEC_LOAD;
}
if ((hdr->sh_flags & SHF_WRITE) == 0)
flags |= SEC_READONLY;
if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
flags |= SEC_CODE;
else if ((flags & SEC_LOAD) != 0)
flags |= SEC_DATA;
/* The debugging sections appear to be recognized only by name, not
any sort of flag. */
if (strncmp (name, ".debug", sizeof ".debug" - 1) == 0
|| strncmp (name, ".line", sizeof ".line" - 1) == 0
|| strncmp (name, ".stab", sizeof ".stab" - 1) == 0)
flags |= SEC_DEBUGGING;
if (! bfd_set_section_flags (abfd, newsect, flags))
return false;
hdr->bfd_section = newsect;
elf_section_data (newsect)->this_hdr = *hdr;
return true;
}
/*
INTERNAL_FUNCTION
bfd_elf_find_section
SYNOPSIS
struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
DESCRIPTION
Helper functions for GDB to locate the string tables.
Since BFD hides string tables from callers, GDB needs to use an
internal hook to find them. Sun's .stabstr, in particular,
isn't even pointed to by the .stab section, so ordinary
mechanisms wouldn't work to find it, even if we had some.
*/
struct elf_internal_shdr *
bfd_elf_find_section (abfd, name)
bfd * abfd;
char *name;
{
Elf_Internal_Shdr **i_shdrp;
char *shstrtab;
unsigned int max;
unsigned int i;
i_shdrp = elf_elfsections (abfd);
if (i_shdrp != NULL)
{
shstrtab = bfd_elf_get_str_section (abfd, elf_elfheader (abfd)->e_shstrndx);
if (shstrtab != NULL)
{
max = elf_elfheader (abfd)->e_shnum;
for (i = 1; i < max; i++)
if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
return i_shdrp[i];
}
}
return 0;
}
const char *const bfd_elf_section_type_names[] = {
"SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
"SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
"SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
};
/* ELF relocs are against symbols. If we are producing relocateable
output, and the reloc is against an external symbol, and nothing
has given us any additional addend, the resulting reloc will also
be against the same symbol. In such a case, we don't want to
change anything about the way the reloc is handled, since it will
all be done at final link time. Rather than put special case code
into bfd_perform_relocation, all the reloc types use this howto
function. It just short circuits the reloc if producing
relocateable output against an external symbol. */
/*ARGSUSED*/
bfd_reloc_status_type
bfd_elf_generic_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (! reloc_entry->howto->partial_inplace
|| reloc_entry->addend == 0))
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
return bfd_reloc_continue;
}
/* Display ELF-specific fields of a symbol. */
void
bfd_elf_print_symbol (ignore_abfd, filep, symbol, how)
bfd *ignore_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, "elf ");
fprintf_vma (file, symbol->value);
fprintf (file, " %lx", (long) symbol->flags);
break;
case bfd_print_symbol_all:
{
CONST char *section_name;
section_name = symbol->section ? symbol->section->name : "(*none*)";
bfd_print_symbol_vandf ((PTR) file, symbol);
fprintf (file, " %s\t", section_name);
/* Print the "other" value for a symbol. For common symbols,
we've already printed the size; now print the alignment.
For other symbols, we have no specified alignment, and
we've printed the address; now print the size. */
fprintf_vma (file,
(bfd_is_com_section (symbol->section)
? ((elf_symbol_type *) symbol)->internal_elf_sym.st_value
: ((elf_symbol_type *) symbol)->internal_elf_sym.st_size));
fprintf (file, " %s", symbol->name);
}
break;
}
}
/* Create an entry in an ELF linker hash table. */
struct bfd_hash_entry *
_bfd_elf_link_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
{
struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
/* Allocate the structure if it has not already been allocated by a
subclass. */
if (ret == (struct elf_link_hash_entry *) NULL)
ret = ((struct elf_link_hash_entry *)
bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)));
if (ret == (struct elf_link_hash_entry *) NULL)
{
bfd_set_error (bfd_error_no_memory);
return (struct bfd_hash_entry *) ret;
}
/* Call the allocation method of the superclass. */
ret = ((struct elf_link_hash_entry *)
_bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
table, string));
if (ret != (struct elf_link_hash_entry *) NULL)
{
/* Set local fields. */
ret->indx = -1;
ret->size = 0;
ret->dynindx = -1;
ret->dynstr_index = 0;
ret->weakdef = NULL;
ret->got_offset = (bfd_vma) -1;
ret->plt_offset = (bfd_vma) -1;
ret->type = STT_NOTYPE;
ret->elf_link_hash_flags = 0;
}
return (struct bfd_hash_entry *) ret;
}
/* Initialize an ELF linker hash table. */
boolean
_bfd_elf_link_hash_table_init (table, abfd, newfunc)
struct elf_link_hash_table *table;
bfd *abfd;
struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
struct bfd_hash_table *,
const char *));
{
table->dynamic_sections_created = false;
table->dynobj = NULL;
/* The first dynamic symbol is a dummy. */
table->dynsymcount = 1;
table->dynstr = NULL;
table->bucketcount = 0;
table->needed = NULL;
return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
}
/* Create an ELF linker hash table. */
struct bfd_link_hash_table *
_bfd_elf_link_hash_table_create (abfd)
bfd *abfd;
{
struct elf_link_hash_table *ret;
ret = ((struct elf_link_hash_table *)
bfd_alloc (abfd, sizeof (struct elf_link_hash_table)));
if (ret == (struct elf_link_hash_table *) NULL)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
{
bfd_release (abfd, ret);
return NULL;
}
return &ret->root;
}
/* This is a hook for the ELF emulation code in the generic linker to
tell the backend linker what file name to use for the DT_NEEDED
entry for a dynamic object. The generic linker passes name as an
empty string to indicate that no DT_NEEDED entry should be made. */
void
bfd_elf_set_dt_needed_name (abfd, name)
bfd *abfd;
const char *name;
{
elf_dt_needed_name (abfd) = name;
}
/* Get the list of DT_NEEDED entries for a link. */
struct bfd_elf_link_needed_list *
bfd_elf_get_needed_list (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
return elf_hash_table (info)->needed;
}
/* Allocate an ELF string table--force the first byte to be zero. */
struct bfd_strtab_hash *
_bfd_elf_stringtab_init ()
{
struct bfd_strtab_hash *ret;
ret = _bfd_stringtab_init ();
if (ret != NULL)
{
bfd_size_type loc;
loc = _bfd_stringtab_add (ret, "", true, false);
BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
if (loc == (bfd_size_type) -1)
{
_bfd_stringtab_free (ret);
ret = NULL;
}
}
return ret;
}
/* ELF .o/exec file reading */
/* Create a new bfd section from an ELF section header. */
boolean
bfd_section_from_shdr (abfd, shindex)
bfd *abfd;
unsigned int shindex;
{
Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
struct elf_backend_data *bed = get_elf_backend_data (abfd);
char *name;
name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
switch (hdr->sh_type)
{
case SHT_NULL:
/* Inactive section. Throw it away. */
return true;
case SHT_PROGBITS: /* Normal section with contents. */
case SHT_DYNAMIC: /* Dynamic linking information. */
case SHT_NOBITS: /* .bss section. */
case SHT_HASH: /* .hash section. */
return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
case SHT_SYMTAB: /* A symbol table */
if (elf_onesymtab (abfd) == shindex)
return true;
BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
BFD_ASSERT (elf_onesymtab (abfd) == 0);
elf_onesymtab (abfd) = shindex;
elf_tdata (abfd)->symtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_hdr;
abfd->flags |= HAS_SYMS;
/* Sometimes a shared object will map in the symbol table. If
SHF_ALLOC is set, and this is a shared object, then we also
treat this section as a BFD section. We can not base the
decision purely on SHF_ALLOC, because that flag is sometimes
set in a relocateable object file, which would confuse the
linker. */
if ((hdr->sh_flags & SHF_ALLOC) != 0
&& (abfd->flags & DYNAMIC) != 0
&& ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
return false;
return true;
case SHT_DYNSYM: /* A dynamic symbol table */
if (elf_dynsymtab (abfd) == shindex)
return true;
BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
BFD_ASSERT (elf_dynsymtab (abfd) == 0);
elf_dynsymtab (abfd) = shindex;
elf_tdata (abfd)->dynsymtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->dynsymtab_hdr;
abfd->flags |= HAS_SYMS;
/* Besides being a symbol table, we also treat this as a regular
section, so that objcopy can handle it. */
return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
case SHT_STRTAB: /* A string table */
if (hdr->bfd_section != NULL)
return true;
if (ehdr->e_shstrndx == shindex)
{
elf_tdata (abfd)->shstrtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
return true;
}
{
unsigned int i;
for (i = 1; i < ehdr->e_shnum; i++)
{
Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
if (hdr2->sh_link == shindex)
{
if (! bfd_section_from_shdr (abfd, i))
return false;
if (elf_onesymtab (abfd) == i)
{
elf_tdata (abfd)->strtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] =
&elf_tdata (abfd)->strtab_hdr;
return true;
}
if (elf_dynsymtab (abfd) == i)
{
elf_tdata (abfd)->dynstrtab_hdr = *hdr;
elf_elfsections (abfd)[shindex] =
&elf_tdata (abfd)->dynstrtab_hdr;
/* We also treat this as a regular section, so
that objcopy can handle it. */
break;
}
#if 0 /* Not handling other string tables specially right now. */
hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
/* We have a strtab for some random other section. */
newsect = (asection *) hdr2->bfd_section;
if (!newsect)
break;
hdr->bfd_section = newsect;
hdr2 = &elf_section_data (newsect)->str_hdr;
*hdr2 = *hdr;
elf_elfsections (abfd)[shindex] = hdr2;
#endif
}
}
}
return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
case SHT_REL:
case SHT_RELA:
/* *These* do a lot of work -- but build no sections! */
{
asection *target_sect;
Elf_Internal_Shdr *hdr2;
int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
/* Get the symbol table. */
if (! bfd_section_from_shdr (abfd, hdr->sh_link))
return false;
/* If this reloc section does not use the main symbol table we
don't treat it as a reloc section. BFD can't adequately
represent such a section, so at least for now, we don't
try. We just present it as a normal section. */
if (hdr->sh_link != elf_onesymtab (abfd))
return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
/* Don't allow REL relocations on a machine that uses RELA and
vice versa. */
/* @@ Actually, the generic ABI does suggest that both might be
used in one file. But the four ABI Processor Supplements I
have access to right now all specify that only one is used on
each of those architectures. It's conceivable that, e.g., a
bunch of absolute 32-bit relocs might be more compact in REL
form even on a RELA machine... */
BFD_ASSERT (use_rela_p
? (hdr->sh_type == SHT_RELA
&& hdr->sh_entsize == bed->s->sizeof_rela)
: (hdr->sh_type == SHT_REL
&& hdr->sh_entsize == bed->s->sizeof_rel));
if (! bfd_section_from_shdr (abfd, hdr->sh_info))
return false;
target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
if (target_sect == NULL)
return false;
hdr2 = &elf_section_data (target_sect)->rel_hdr;
*hdr2 = *hdr;
elf_elfsections (abfd)[shindex] = hdr2;
target_sect->reloc_count = hdr->sh_size / hdr->sh_entsize;
target_sect->flags |= SEC_RELOC;
target_sect->relocation = NULL;
target_sect->rel_filepos = hdr->sh_offset;
abfd->flags |= HAS_RELOC;
return true;
}
break;
case SHT_NOTE:
#if 0
fprintf (stderr, "Note Sections not yet supported.\n");
BFD_FAIL ();
#endif
break;
case SHT_SHLIB:
#if 0
fprintf (stderr, "SHLIB Sections not supported (and non conforming.)\n");
#endif
return true;
default:
/* Check for any processor-specific section types. */
{
if (bed->elf_backend_section_from_shdr)
(*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
}
break;
}
return true;
}
/* Given an ELF section number, retrieve the corresponding BFD
section. */
asection *
bfd_section_from_elf_index (abfd, index)
bfd *abfd;
unsigned int index;
{
BFD_ASSERT (index > 0 && index < SHN_LORESERVE);
if (index >= elf_elfheader (abfd)->e_shnum)
return NULL;
return elf_elfsections (abfd)[index]->bfd_section;
}
boolean
_bfd_elf_new_section_hook (abfd, sec)
bfd *abfd;
asection *sec;
{
struct bfd_elf_section_data *sdata;
sdata = (struct bfd_elf_section_data *) bfd_alloc (abfd, sizeof (*sdata));
if (!sdata)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
sec->used_by_bfd = (PTR) sdata;
memset (sdata, 0, sizeof (*sdata));
return true;
}
/* Create a new bfd section from an ELF program header.
Since program segments have no names, we generate a synthetic name
of the form segment<NUM>, where NUM is generally the index in the
program header table. For segments that are split (see below) we
generate the names segment<NUM>a and segment<NUM>b.
Note that some program segments may have a file size that is different than
(less than) the memory size. All this means is that at execution the
system must allocate the amount of memory specified by the memory size,
but only initialize it with the first "file size" bytes read from the
file. This would occur for example, with program segments consisting
of combined data+bss.
To handle the above situation, this routine generates TWO bfd sections
for the single program segment. The first has the length specified by
the file size of the segment, and the second has the length specified
by the difference between the two sizes. In effect, the segment is split
into it's initialized and uninitialized parts.
*/
boolean
bfd_section_from_phdr (abfd, hdr, index)
bfd *abfd;
Elf_Internal_Phdr *hdr;
int index;
{
asection *newsect;
char *name;
char namebuf[64];
int split;
split = ((hdr->p_memsz > 0) &&
(hdr->p_filesz > 0) &&
(hdr->p_memsz > hdr->p_filesz));
sprintf (namebuf, split ? "segment%da" : "segment%d", index);
name = bfd_alloc (abfd, strlen (namebuf) + 1);
if (!name)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
strcpy (name, namebuf);
newsect = bfd_make_section (abfd, name);
if (newsect == NULL)
return false;
newsect->vma = hdr->p_vaddr;
newsect->_raw_size = hdr->p_filesz;
newsect->filepos = hdr->p_offset;
newsect->flags |= SEC_HAS_CONTENTS;
if (hdr->p_type == PT_LOAD)
{
newsect->flags |= SEC_ALLOC;
newsect->flags |= SEC_LOAD;
if (hdr->p_flags & PF_X)
{
/* FIXME: all we known is that it has execute PERMISSION,
may be data. */
newsect->flags |= SEC_CODE;
}
}
if (!(hdr->p_flags & PF_W))
{
newsect->flags |= SEC_READONLY;
}
if (split)
{
sprintf (namebuf, "segment%db", index);
name = bfd_alloc (abfd, strlen (namebuf) + 1);
if (!name)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
strcpy (name, namebuf);
newsect = bfd_make_section (abfd, name);
if (newsect == NULL)
return false;
newsect->vma = hdr->p_vaddr + hdr->p_filesz;
newsect->_raw_size = hdr->p_memsz - hdr->p_filesz;
if (hdr->p_type == PT_LOAD)
{
newsect->flags |= SEC_ALLOC;
if (hdr->p_flags & PF_X)
newsect->flags |= SEC_CODE;
}
if (!(hdr->p_flags & PF_W))
newsect->flags |= SEC_READONLY;
}
return true;
}
/* Set up an ELF internal section header for a section. */
/*ARGSUSED*/
static void
elf_fake_sections (abfd, asect, failedptrarg)
bfd *abfd;
asection *asect;
PTR failedptrarg;
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
boolean *failedptr = (boolean *) failedptrarg;
Elf_Internal_Shdr *this_hdr;
if (*failedptr)
{
/* We already failed; just get out of the bfd_map_over_sections
loop. */
return;
}
this_hdr = &elf_section_data (asect)->this_hdr;
this_hdr->sh_name = (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd),
asect->name,
true, false);
if (this_hdr->sh_name == (unsigned long) -1)
{
*failedptr = true;
return;
}
this_hdr->sh_flags = 0;
if ((asect->flags & SEC_ALLOC) != 0)
this_hdr->sh_addr = asect->vma;
else
this_hdr->sh_addr = 0;
this_hdr->sh_offset = 0;
this_hdr->sh_size = asect->_raw_size;
this_hdr->sh_link = 0;
this_hdr->sh_info = 0;
this_hdr->sh_addralign = 1 << asect->alignment_power;
this_hdr->sh_entsize = 0;
this_hdr->bfd_section = asect;
this_hdr->contents = NULL;
/* FIXME: This should not be based on section names. */
if (strcmp (asect->name, ".dynstr") == 0)
this_hdr->sh_type = SHT_STRTAB;
else if (strcmp (asect->name, ".hash") == 0)
{
this_hdr->sh_type = SHT_HASH;
this_hdr->sh_entsize = bed->s->arch_size / 8;
}
else if (strcmp (asect->name, ".dynsym") == 0)
{
this_hdr->sh_type = SHT_DYNSYM;
this_hdr->sh_entsize = bed->s->sizeof_sym;
}
else if (strcmp (asect->name, ".dynamic") == 0)
{
this_hdr->sh_type = SHT_DYNAMIC;
this_hdr->sh_entsize = bed->s->sizeof_dyn;
}
else if (strncmp (asect->name, ".rela", 5) == 0
&& get_elf_backend_data (abfd)->use_rela_p)
{
this_hdr->sh_type = SHT_RELA;
this_hdr->sh_entsize = bed->s->sizeof_rela;
}
else if (strncmp (asect->name, ".rel", 4) == 0
&& ! get_elf_backend_data (abfd)->use_rela_p)
{
this_hdr->sh_type = SHT_REL;
this_hdr->sh_entsize = bed->s->sizeof_rel;
}
else if (strcmp (asect->name, ".note") == 0)
this_hdr->sh_type = SHT_NOTE;
else if (strncmp (asect->name, ".stab", 5) == 0
&& strcmp (asect->name + strlen (asect->name) - 3, "str") == 0)
this_hdr->sh_type = SHT_STRTAB;
else if ((asect->flags & SEC_ALLOC) != 0
&& (asect->flags & SEC_LOAD) != 0)
this_hdr->sh_type = SHT_PROGBITS;
else if ((asect->flags & SEC_ALLOC) != 0
&& ((asect->flags & SEC_LOAD) == 0))
{
BFD_ASSERT (strcmp (asect->name, ".bss") == 0
|| strcmp (asect->name, ".sbss") == 0
|| strcmp (asect->name, ".scommon") == 0
|| strcmp (asect->name, "COMMON") == 0);
this_hdr->sh_type = SHT_NOBITS;
}
else
{
/* Who knows? */
this_hdr->sh_type = SHT_PROGBITS;
}
if ((asect->flags & SEC_ALLOC) != 0)
this_hdr->sh_flags |= SHF_ALLOC;
if ((asect->flags & SEC_READONLY) == 0)
this_hdr->sh_flags |= SHF_WRITE;
if ((asect->flags & SEC_CODE) != 0)
this_hdr->sh_flags |= SHF_EXECINSTR;
/* Check for processor-specific section types. */
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (bed->elf_backend_fake_sections)
(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect);
}
/* If the section has relocs, set up a section header for the
SHT_REL[A] section. */
if ((asect->flags & SEC_RELOC) != 0)
{
Elf_Internal_Shdr *rela_hdr;
int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
char *name;
rela_hdr = &elf_section_data (asect)->rel_hdr;
name = bfd_alloc (abfd, sizeof ".rela" + strlen (asect->name));
if (name == NULL)
{
bfd_set_error (bfd_error_no_memory);
*failedptr = true;
return;
}
sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
rela_hdr->sh_name =
(unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd), name,
true, false);
if (rela_hdr->sh_name == (unsigned int) -1)
{
*failedptr = true;
return;
}
rela_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
rela_hdr->sh_entsize = (use_rela_p
? bed->s->sizeof_rela
: bed->s->sizeof_rel);
rela_hdr->sh_addralign = bed->s->file_align;
rela_hdr->sh_flags = 0;
rela_hdr->sh_addr = 0;
rela_hdr->sh_size = 0;
rela_hdr->sh_offset = 0;
}
}
/* Assign all ELF section numbers. The dummy first section is handled here
too. The link/info pointers for the standard section types are filled
in here too, while we're at it. */
static boolean
assign_section_numbers (abfd)
bfd *abfd;
{
struct elf_obj_tdata *t = elf_tdata (abfd);
asection *sec;
unsigned int section_number;
Elf_Internal_Shdr **i_shdrp;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
section_number = 1;
for (sec = abfd->sections; sec; sec = sec->next)
{
struct bfd_elf_section_data *d = elf_section_data (sec);
d->this_idx = section_number++;
if ((sec->flags & SEC_RELOC) == 0)
d->rel_idx = 0;
else
d->rel_idx = section_number++;
}
t->shstrtab_section = section_number++;
elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
t->shstrtab_hdr.sh_size = _bfd_stringtab_size (elf_shstrtab (abfd));
if (abfd->symcount > 0)
{
t->symtab_section = section_number++;
t->strtab_section = section_number++;
}
elf_elfheader (abfd)->e_shnum = section_number;
/* Set up the list of section header pointers, in agreement with the
indices. */
i_shdrp = ((Elf_Internal_Shdr **)
bfd_alloc (abfd, section_number * sizeof (Elf_Internal_Shdr *)));
if (i_shdrp == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
i_shdrp[0] = ((Elf_Internal_Shdr *)
bfd_alloc (abfd, sizeof (Elf_Internal_Shdr)));
if (i_shdrp[0] == NULL)
{
bfd_release (abfd, i_shdrp);
bfd_set_error (bfd_error_no_memory);
return false;
}
memset (i_shdrp[0], 0, sizeof (Elf_Internal_Shdr));
elf_elfsections (abfd) = i_shdrp;
i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
if (abfd->symcount > 0)
{
i_shdrp[t->symtab_section] = &t->symtab_hdr;
i_shdrp[t->strtab_section] = &t->strtab_hdr;
t->symtab_hdr.sh_link = t->strtab_section;
}
for (sec = abfd->sections; sec; sec = sec->next)
{
struct bfd_elf_section_data *d = elf_section_data (sec);
asection *s;
const char *name;
i_shdrp[d->this_idx] = &d->this_hdr;
if (d->rel_idx != 0)
i_shdrp[d->rel_idx] = &d->rel_hdr;
/* Fill in the sh_link and sh_info fields while we're at it. */
/* sh_link of a reloc section is the section index of the symbol
table. sh_info is the section index of the section to which
the relocation entries apply. */
if (d->rel_idx != 0)
{
d->rel_hdr.sh_link = t->symtab_section;
d->rel_hdr.sh_info = d->this_idx;
}
switch (d->this_hdr.sh_type)
{
case SHT_REL:
case SHT_RELA:
/* A reloc section which we are treating as a normal BFD
section. sh_link is the section index of the symbol
table. sh_info is the section index of the section to
which the relocation entries apply. We assume that an
allocated reloc section uses the dynamic symbol table.
FIXME: How can we be sure? */
s = bfd_get_section_by_name (abfd, ".dynsym");
if (s != NULL)
d->this_hdr.sh_link = elf_section_data (s)->this_idx;
/* We look up the section the relocs apply to by name. */
name = sec->name;
if (d->this_hdr.sh_type == SHT_REL)
name += 4;
else
name += 5;
s = bfd_get_section_by_name (abfd, name);
if (s != NULL)
d->this_hdr.sh_info = elf_section_data (s)->this_idx;
break;
case SHT_STRTAB:
/* We assume that a section named .stab*str is a stabs
string section. We look for a section with the same name
but without the trailing ``str'', and set its sh_link
field to point to this section. */
if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
&& strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
{
size_t len;
char *alc;
len = strlen (sec->name);
alc = (char *) malloc (len - 2);
if (alc == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
strncpy (alc, sec->name, len - 3);
alc[len - 3] = '\0';
s = bfd_get_section_by_name (abfd, alc);
free (alc);
if (s != NULL)
{
elf_section_data (s)->this_hdr.sh_link = d->this_idx;
/* This is a .stab section. */
elf_section_data (s)->this_hdr.sh_entsize =
4 + 2 * (bed->s->arch_size / 8);
}
}
break;
case SHT_DYNAMIC:
case SHT_DYNSYM:
/* sh_link is the section header index of the string table
used for the dynamic entries or symbol table. */
s = bfd_get_section_by_name (abfd, ".dynstr");
if (s != NULL)
d->this_hdr.sh_link = elf_section_data (s)->this_idx;
break;
case SHT_HASH:
/* sh_link is the section header index of the symbol table
this hash table is for. */
s = bfd_get_section_by_name (abfd, ".dynsym");
if (s != NULL)
d->this_hdr.sh_link = elf_section_data (s)->this_idx;
break;
}
}
return true;
}
/* Map symbol from it's internal number to the external number, moving
all local symbols to be at the head of the list. */
static INLINE int
sym_is_global (abfd, sym)
bfd *abfd;
asymbol *sym;
{
/* If the backend has a special mapping, use it. */
if (get_elf_backend_data (abfd)->elf_backend_sym_is_global)
return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global)
(abfd, sym));
return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
|| bfd_is_und_section (bfd_get_section (sym))
|| bfd_is_com_section (bfd_get_section (sym)));
}
static boolean
elf_map_symbols (abfd)
bfd *abfd;
{
int symcount = bfd_get_symcount (abfd);
asymbol **syms = bfd_get_outsymbols (abfd);
asymbol **sect_syms;
int num_locals = 0;
int num_globals = 0;
int num_locals2 = 0;
int num_globals2 = 0;
int max_index = 0;
int num_sections = 0;
int idx;
asection *asect;
asymbol **new_syms;
#ifdef DEBUG
fprintf (stderr, "elf_map_symbols\n");
fflush (stderr);
#endif
/* Add a section symbol for each BFD section. FIXME: Is this really
necessary? */
for (asect = abfd->sections; asect; asect = asect->next)
{
if (max_index < asect->index)
max_index = asect->index;
}
max_index++;
sect_syms = (asymbol **) bfd_zalloc (abfd, max_index * sizeof (asymbol *));
if (sect_syms == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
elf_section_syms (abfd) = sect_syms;
for (idx = 0; idx < symcount; idx++)
{
if ((syms[idx]->flags & BSF_SECTION_SYM) != 0
&& syms[idx]->value == 0)
{
asection *sec;
sec = syms[idx]->section;
if (sec->owner != NULL)
{
if (sec->owner != abfd)
{
if (sec->output_offset != 0)
continue;
sec = sec->output_section;
BFD_ASSERT (sec->owner == abfd);
}
sect_syms[sec->index] = syms[idx];
}
}
}
for (asect = abfd->sections; asect; asect = asect->next)
{
asymbol *sym;
if (sect_syms[asect->index] != NULL)
continue;
sym = bfd_make_empty_symbol (abfd);
if (sym == NULL)
return false;
sym->the_bfd = abfd;
sym->name = asect->name;
sym->value = 0;
/* Set the flags to 0 to indicate that this one was newly added. */
sym->flags = 0;
sym->section = asect;
sect_syms[asect->index] = sym;
num_sections++;
#ifdef DEBUG
fprintf (stderr,
"creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n",
asect->name, (long) asect->vma, asect->index, (long) asect);
#endif
}
/* Classify all of the symbols. */
for (idx = 0; idx < symcount; idx++)
{
if (!sym_is_global (abfd, syms[idx]))
num_locals++;
else
num_globals++;
}
for (asect = abfd->sections; asect; asect = asect->next)
{
if (sect_syms[asect->index] != NULL
&& sect_syms[asect->index]->flags == 0)
{
sect_syms[asect->index]->flags = BSF_SECTION_SYM;
if (!sym_is_global (abfd, sect_syms[asect->index]))
num_locals++;
else
num_globals++;
sect_syms[asect->index]->flags = 0;
}
}
/* Now sort the symbols so the local symbols are first. */
new_syms = ((asymbol **)
bfd_alloc (abfd,
(num_locals + num_globals) * sizeof (asymbol *)));
if (new_syms == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
for (idx = 0; idx < symcount; idx++)
{
asymbol *sym = syms[idx];
int i;
if (!sym_is_global (abfd, sym))
i = num_locals2++;
else
i = num_locals + num_globals2++;
new_syms[i] = sym;
sym->udata.i = i + 1;
}
for (asect = abfd->sections; asect; asect = asect->next)
{
if (sect_syms[asect->index] != NULL
&& sect_syms[asect->index]->flags == 0)
{
asymbol *sym = sect_syms[asect->index];
int i;
sym->flags = BSF_SECTION_SYM;
if (!sym_is_global (abfd, sym))
i = num_locals2++;
else
i = num_locals + num_globals2++;
new_syms[i] = sym;
sym->udata.i = i + 1;
}
}
bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
elf_num_locals (abfd) = num_locals;
elf_num_globals (abfd) = num_globals;
return true;
}
/* Compute the file positions we are going to put the sections at, and
otherwise prepare to begin writing out the ELF file. If LINK_INFO
is not NULL, this is being called by the ELF backend linker. */
boolean
_bfd_elf_compute_section_file_positions (abfd, link_info)
bfd *abfd;
struct bfd_link_info *link_info;
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
boolean failed;
struct bfd_strtab_hash *strtab;
Elf_Internal_Shdr *shstrtab_hdr;
if (abfd->output_has_begun)
return true;
/* Do any elf backend specific processing first. */
if (bed->elf_backend_begin_write_processing)
(*bed->elf_backend_begin_write_processing) (abfd, link_info);
if (! prep_headers (abfd))
return false;
failed = false;
bfd_map_over_sections (abfd, elf_fake_sections, &failed);
if (failed)
return false;
if (!assign_section_numbers (abfd))
return false;
/* The backend linker builds symbol table information itself. */
if (link_info == NULL)
{
if (! swap_out_syms (abfd, &strtab))
return false;
}
shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
/* sh_name was set in prep_headers. */
shstrtab_hdr->sh_type = SHT_STRTAB;
shstrtab_hdr->sh_flags = 0;
shstrtab_hdr->sh_addr = 0;
shstrtab_hdr->sh_size = _bfd_stringtab_size (elf_shstrtab (abfd));
shstrtab_hdr->sh_entsize = 0;
shstrtab_hdr->sh_link = 0;
shstrtab_hdr->sh_info = 0;
/* sh_offset is set in assign_file_positions_for_symtabs_and_strtabs. */
shstrtab_hdr->sh_addralign = 1;
if (!assign_file_positions_except_relocs (abfd,
link_info == NULL ? true : false))
return false;
if (link_info == NULL)
{
/* Now that we know where the .strtab section goes, write it
out. */
if ((bfd_seek (abfd, elf_tdata (abfd)->strtab_hdr.sh_offset, SEEK_SET)
!= 0)
|| ! _bfd_stringtab_emit (abfd, strtab))
return false;
_bfd_stringtab_free (strtab);
}
abfd->output_has_begun = true;
return true;
}
/* Align to the maximum file alignment that could be required for any
ELF data structure. */
static INLINE file_ptr align_file_position PARAMS ((file_ptr, int));
static INLINE file_ptr
align_file_position (off, align)
file_ptr off;
int align;
{
return (off + align - 1) & ~(align - 1);
}
/* Assign a file position to a section, optionally aligning to the
required section alignment. */
INLINE file_ptr
_bfd_elf_assign_file_position_for_section (i_shdrp, offset, align)
Elf_Internal_Shdr *i_shdrp;
file_ptr offset;
boolean align;
{
if (align)
{
unsigned int al;
al = i_shdrp->sh_addralign;
if (al > 1)
offset = BFD_ALIGN (offset, al);
}
i_shdrp->sh_offset = offset;
if (i_shdrp->bfd_section != NULL)
i_shdrp->bfd_section->filepos = offset;
if (i_shdrp->sh_type != SHT_NOBITS)
offset += i_shdrp->sh_size;
return offset;
}
/* Get the size of the program header.
SORTED_HDRS, if non-NULL, is an array of COUNT pointers to headers sorted
by VMA. Non-allocated sections (!SHF_ALLOC) must appear last. All
section VMAs and sizes are known so we can compute the correct value.
(??? This may not be perfectly true. What cases do we miss?)
If SORTED_HDRS is NULL we assume there are two segments: text and data
(exclusive of .interp and .dynamic).
If this is called by the linker before any of the section VMA's are set, it
can't calculate the correct value for a strange memory layout. This only
happens when SIZEOF_HEADERS is used in a linker script. In this case,
SORTED_HDRS is NULL and we assume the normal scenario of one text and one
data segment (exclusive of .interp and .dynamic).
??? User written scripts must either not use SIZEOF_HEADERS, or assume there
will be two segments. */
static bfd_size_type
get_program_header_size (abfd, sorted_hdrs, count, maxpagesize)
bfd *abfd;
Elf_Internal_Shdr **sorted_hdrs;
unsigned int count;
bfd_vma maxpagesize;
{
size_t segs;
asection *s;
/* We can't return a different result each time we're called. */
if (elf_tdata (abfd)->program_header_size != 0)
return elf_tdata (abfd)->program_header_size;
if (sorted_hdrs != NULL)
{
unsigned int i;
unsigned int last_type;
Elf_Internal_Shdr **hdrpp;
/* What we think the current segment's offset is. */
bfd_vma p_offset;
/* What we think the current segment's address is. */
bfd_vma p_vaddr;
/* How big we think the current segment is. */
bfd_vma p_memsz;
/* What we think the current file offset is. */
bfd_vma file_offset;
bfd_vma next_offset;
/* Scan the headers and compute the number of segments required. This
code is intentionally similar to the code in map_program_segments.
The `sh_offset' field isn't valid at this point, so we keep our own
running total in `file_offset'.
This works because section VMAs are already known. */
segs = 1;
/* Make sure the first section goes in the first segment. */
file_offset = p_offset = sorted_hdrs[0]->sh_addr % maxpagesize;
p_vaddr = sorted_hdrs[0]->sh_addr;
p_memsz = 0;
last_type = SHT_PROGBITS;
for (i = 0, hdrpp = sorted_hdrs; i < count; i++, hdrpp++)
{
Elf_Internal_Shdr *hdr;
hdr = *hdrpp;
/* Ignore any section which will not be part of the process
image. */
if ((hdr->sh_flags & SHF_ALLOC) == 0)
continue;
/* Keep track of where this and the next sections go.
The section VMA must equal the file position modulo
the page size. */
file_offset += (hdr->sh_addr - file_offset) % maxpagesize;
next_offset = file_offset;
if (hdr->sh_type != SHT_NOBITS)
next_offset = file_offset + hdr->sh_size;
/* If this section fits in the segment we are constructing, add
it in. */
if ((file_offset - (p_offset + p_memsz)
== hdr->sh_addr - (p_vaddr + p_memsz))
&& (last_type != SHT_NOBITS || hdr->sh_type == SHT_NOBITS))
{
bfd_size_type adjust;
adjust = hdr->sh_addr - (p_vaddr + p_memsz);
p_memsz += hdr->sh_size + adjust;
file_offset = next_offset;
last_type = hdr->sh_type;
continue;
}
/* The section won't fit, start a new segment. */
++segs;
/* Initialize the segment. */
p_vaddr = hdr->sh_addr;
p_memsz = hdr->sh_size;
p_offset = file_offset;
file_offset = next_offset;
last_type = hdr->sh_type;
}
}
else
{
/* Assume we will need exactly two PT_LOAD segments: one for text
and one for data. */
segs = 2;
}
s = bfd_get_section_by_name (abfd, ".interp");
if (s != NULL && (s->flags & SEC_LOAD) != 0)
{
/* If we have a loadable interpreter section, we need a
PT_INTERP segment. In this case, assume we also need a
PT_PHDR segment, although that may not be true for all
targets. */
segs += 2;
}
if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
{
/* We need a PT_DYNAMIC segment. */
++segs;
}
elf_tdata (abfd)->program_header_size = segs * get_elf_backend_data (abfd)->s->sizeof_phdr;
return elf_tdata (abfd)->program_header_size;
}
/* Create the program header. OFF is the file offset where the
program header should be written. FIRST is the first loadable ELF
section. SORTED_HDRS is the ELF sections sorted by section
address. PHDR_SIZE is the size of the program header as returned
by get_program_header_size. */
static file_ptr
map_program_segments (abfd, off, first, sorted_hdrs, phdr_size)
bfd *abfd;
file_ptr off;
Elf_Internal_Shdr *first;
Elf_Internal_Shdr **sorted_hdrs;
bfd_size_type phdr_size;
{
Elf_Internal_Phdr phdrs[10];
unsigned int phdr_count;
Elf_Internal_Phdr *phdr;
int phdr_size_adjust;
unsigned int i;
Elf_Internal_Shdr **hdrpp;
asection *sinterp, *sdyn;
unsigned int last_type;
Elf_Internal_Ehdr *i_ehdrp;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
BFD_ASSERT ((abfd->flags & (EXEC_P | DYNAMIC)) != 0);
BFD_ASSERT (phdr_size / sizeof (Elf_Internal_Phdr)
<= sizeof phdrs / sizeof (phdrs[0]));
phdr_count = 0;
phdr = phdrs;
phdr_size_adjust = 0;
/* If we have a loadable .interp section, we must create a PT_INTERP
segment which must precede all PT_LOAD segments. We assume that
we must also create a PT_PHDR segment, although that may not be
true for all targets. */
sinterp = bfd_get_section_by_name (abfd, ".interp");
if (sinterp != NULL && (sinterp->flags & SEC_LOAD) != 0)
{
BFD_ASSERT (first != NULL);
phdr->p_type = PT_PHDR;
phdr->p_offset = off;
/* Account for any adjustment made because of the alignment of
the first loadable section. */
phdr_size_adjust = (first->sh_offset - phdr_size) - off;
BFD_ASSERT (phdr_size_adjust >= 0 && phdr_size_adjust < 128);
/* The program header precedes all loadable sections. This lets
us compute its loadable address. This depends on the linker
script. */
phdr->p_vaddr = first->sh_addr - (phdr_size + phdr_size_adjust);
phdr->p_paddr = 0;
phdr->p_filesz = phdr_size;
phdr->p_memsz = phdr_size;
/* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
phdr->p_flags = PF_R | PF_X;
phdr->p_align = bed->s->file_align;
BFD_ASSERT ((phdr->p_vaddr - phdr->p_offset) % bed->s->file_align == 0);
/* Include the ELF header in the first loadable segment. */
phdr_size_adjust += off;
++phdr_count;
++phdr;
phdr->p_type = PT_INTERP;
phdr->p_offset = sinterp->filepos;
phdr->p_vaddr = sinterp->vma;
phdr->p_paddr = 0;
phdr->p_filesz = sinterp->_raw_size;
phdr->p_memsz = sinterp->_raw_size;
phdr->p_flags = PF_R;
phdr->p_align = 1 << bfd_get_section_alignment (abfd, sinterp);
++phdr_count;
++phdr;
}
/* Look through the sections to see how they will be divided into
program segments. The sections must be arranged in order by
sh_addr for this to work correctly. */
phdr->p_type = PT_NULL;
last_type = SHT_PROGBITS;
for (i = 1, hdrpp = sorted_hdrs;
i < elf_elfheader (abfd)->e_shnum;
i++, hdrpp++)
{
Elf_Internal_Shdr *hdr;
hdr = *hdrpp;
/* Ignore any section which will not be part of the process
image. */
if ((hdr->sh_flags & SHF_ALLOC) == 0)
continue;
/* If this section fits in the segment we are constructing, add
it in. */
if (phdr->p_type != PT_NULL
&& (hdr->sh_offset - (phdr->p_offset + phdr->p_memsz)
== hdr->sh_addr - (phdr->p_vaddr + phdr->p_memsz))
&& (last_type != SHT_NOBITS || hdr->sh_type == SHT_NOBITS))
{
bfd_size_type adjust;
adjust = hdr->sh_addr - (phdr->p_vaddr + phdr->p_memsz);
phdr->p_memsz += hdr->sh_size + adjust;
if (hdr->sh_type != SHT_NOBITS)
phdr->p_filesz += hdr->sh_size + adjust;
if ((hdr->sh_flags & SHF_WRITE) != 0)
phdr->p_flags |= PF_W;
if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
phdr->p_flags |= PF_X;
last_type = hdr->sh_type;
continue;
}
/* The section won't fit, start a new segment. If we're already in one,
move to the next one. */
if (phdr->p_type != PT_NULL)
{
++phdr;
++phdr_count;
}
/* Initialize the segment. */
phdr->p_type = PT_LOAD;
phdr->p_offset = hdr->sh_offset;
phdr->p_vaddr = hdr->sh_addr;
phdr->p_paddr = 0;
if (hdr->sh_type == SHT_NOBITS)
phdr->p_filesz = 0;
else
phdr->p_filesz = hdr->sh_size;
phdr->p_memsz = hdr->sh_size;
phdr->p_flags = PF_R;
if ((hdr->sh_flags & SHF_WRITE) != 0)
phdr->p_flags |= PF_W;
if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
phdr->p_flags |= PF_X;
phdr->p_align = bed->maxpagesize;
if (hdr == first
&& sinterp != NULL
&& (sinterp->flags & SEC_LOAD) != 0)
{
phdr->p_offset -= phdr_size + phdr_size_adjust;
phdr->p_vaddr -= phdr_size + phdr_size_adjust;
phdr->p_filesz += phdr_size + phdr_size_adjust;
phdr->p_memsz += phdr_size + phdr_size_adjust;
}
last_type = hdr->sh_type;
}
if (phdr->p_type != PT_NULL)
{
++phdr;
++phdr_count;
}
/* If we have a .dynamic section, create a PT_DYNAMIC segment. */
sdyn = bfd_get_section_by_name (abfd, ".dynamic");
if (sdyn != NULL && (sdyn->flags & SEC_LOAD) != 0)
{
phdr->p_type = PT_DYNAMIC;
phdr->p_offset = sdyn->filepos;
phdr->p_vaddr = sdyn->vma;
phdr->p_paddr = 0;
phdr->p_filesz = sdyn->_raw_size;
phdr->p_memsz = sdyn->_raw_size;
phdr->p_flags = PF_R;
if ((sdyn->flags & SEC_READONLY) == 0)
phdr->p_flags |= PF_W;
if ((sdyn->flags & SEC_CODE) != 0)
phdr->p_flags |= PF_X;
phdr->p_align = 1 << bfd_get_section_alignment (abfd, sdyn);
++phdr;
++phdr_count;
}
/* Make sure the return value from get_program_header_size matches
what we computed here. Actually, it's OK if we allocated too
much space in the program header. */
if (phdr_count > phdr_size / bed->s->sizeof_phdr)
{
((*_bfd_error_handler)
("%s: Not enough room for program headers (allocated %lu, need %u)",
bfd_get_filename (abfd),
(unsigned long) (phdr_size / bed->s->sizeof_phdr),
phdr_count));
bfd_set_error (bfd_error_bad_value);
return (file_ptr) -1;
}
/* Set up program header information. */
i_ehdrp = elf_elfheader (abfd);
i_ehdrp->e_phentsize = bed->s->sizeof_phdr;
i_ehdrp->e_phoff = off;
i_ehdrp->e_phnum = phdr_count;
/* Save the program headers away. I don't think anybody uses this
information right now. */
elf_tdata (abfd)->phdr = ((Elf_Internal_Phdr *)
bfd_alloc (abfd,
(phdr_count
* sizeof (Elf_Internal_Phdr))));
if (elf_tdata (abfd)->phdr == NULL && phdr_count != 0)
{
bfd_set_error (bfd_error_no_memory);
return (file_ptr) -1;
}
memcpy (elf_tdata (abfd)->phdr, phdrs,
phdr_count * sizeof (Elf_Internal_Phdr));
/* Write out the program headers. */
if (bfd_seek (abfd, off, SEEK_SET) != 0)
return (file_ptr) -1;
if (bed->s->write_out_phdrs (abfd, phdrs, phdr_count) != 0)
return (file_ptr) -1;
return off + phdr_count * bed->s->sizeof_phdr;
}
/* Work out the file positions of all the sections. This is called by
_bfd_elf_compute_section_file_positions. All the section sizes and
VMAs must be known before this is called.
We do not consider reloc sections at this point, unless they form
part of the loadable image. Reloc sections are assigned file
positions in assign_file_positions_for_relocs, which is called by
write_object_contents and final_link.
If DOSYMS is false, we do not assign file positions for the symbol
table or the string table. */
static int elf_sort_hdrs PARAMS ((const PTR, const PTR));
static boolean
assign_file_positions_except_relocs (abfd, dosyms)
bfd *abfd;
boolean dosyms;
{
struct elf_obj_tdata * const tdata = elf_tdata (abfd);
Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
file_ptr off;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
/* Start after the ELF header. */
off = i_ehdrp->e_ehsize;
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
{
Elf_Internal_Shdr **hdrpp;
unsigned int i;
/* We are not creating an executable, which means that we are
not creating a program header, and that the actual order of
the sections in the file is unimportant. */
for (i = 1, hdrpp = i_shdrpp + 1; i < i_ehdrp->e_shnum; i++, hdrpp++)
{
Elf_Internal_Shdr *hdr;
hdr = *hdrpp;
if (hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
{
hdr->sh_offset = -1;
continue;
}
if (! dosyms
&& (i == tdata->symtab_section
|| i == tdata->strtab_section))
{
hdr->sh_offset = -1;
continue;
}
off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
}
}
else
{
file_ptr phdr_off;
bfd_size_type phdr_size;
bfd_vma maxpagesize;
size_t hdrppsize;
Elf_Internal_Shdr **sorted_hdrs;
Elf_Internal_Shdr **hdrpp;
unsigned int i;
Elf_Internal_Shdr *first;
file_ptr phdr_map;
/* We are creating an executable. */
maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
if (maxpagesize == 0)
maxpagesize = 1;
/* We must sort the sections. The GNU linker will always create
the sections in an appropriate order, but the Irix 5 linker
will not. We don't include the dummy first section in the
sort. We sort sections which are not SHF_ALLOC to the end. */
hdrppsize = (i_ehdrp->e_shnum - 1) * sizeof (Elf_Internal_Shdr *);
sorted_hdrs = (Elf_Internal_Shdr **) malloc (hdrppsize);
if (sorted_hdrs == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
memcpy (sorted_hdrs, i_shdrpp + 1, hdrppsize);
qsort (sorted_hdrs, i_ehdrp->e_shnum - 1, sizeof (Elf_Internal_Shdr *),
elf_sort_hdrs);
/* We can't actually create the program header until we have set the
file positions for the sections, and we can't do that until we know
how big the header is going to be. */
off = align_file_position (off, bed->s->file_align);
phdr_size = get_program_header_size (abfd,
sorted_hdrs, i_ehdrp->e_shnum - 1,
maxpagesize);
if (phdr_size == (file_ptr) -1)
return false;
/* Compute the file offsets of each section. */
phdr_off = off;
off += phdr_size;
first = NULL;
for (i = 1, hdrpp = sorted_hdrs; i < i_ehdrp->e_shnum; i++, hdrpp++)
{
Elf_Internal_Shdr *hdr;
hdr = *hdrpp;
if ((hdr->sh_flags & SHF_ALLOC) == 0)
{
if (hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
{
hdr->sh_offset = -1;
continue;
}
if (! dosyms
&& (hdr == i_shdrpp[tdata->symtab_section]
|| hdr == i_shdrpp[tdata->strtab_section]))
{
hdr->sh_offset = -1;
continue;
}
}
else
{
if (first == NULL)
first = hdr;
/* The section VMA must equal the file position modulo
the page size. This is required by the program
header. */
off += (hdr->sh_addr - off) % maxpagesize;
}
off = _bfd_elf_assign_file_position_for_section (hdr, off, false);
}
/* Create the program header. */
phdr_map = map_program_segments (abfd, phdr_off, first, sorted_hdrs,
phdr_size);
if (phdr_map == (file_ptr) -1)
return false;
BFD_ASSERT ((bfd_size_type) phdr_map <= (bfd_size_type) phdr_off + phdr_size);
free (sorted_hdrs);
}
/* Place the section headers. */
off = align_file_position (off, bed->s->file_align);
i_ehdrp->e_shoff = off;
off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
elf_tdata (abfd)->next_file_pos = off;
return true;
}
/* Sort the ELF headers by VMA. We sort headers which are not
SHF_ALLOC to the end. */
static int
elf_sort_hdrs (arg1, arg2)
const PTR arg1;
const PTR arg2;
{
int ret;
const Elf_Internal_Shdr *hdr1 = *(const Elf_Internal_Shdr **) arg1;
const Elf_Internal_Shdr *hdr2 = *(const Elf_Internal_Shdr **) arg2;
#define TOEND(x) (((x)->sh_flags & SHF_ALLOC)==0)
if (TOEND (hdr1))
if (TOEND (hdr2))
return 0;
else
return 1;
if (TOEND (hdr2))
return -1;
if (hdr1->sh_addr < hdr2->sh_addr)
return -1;
else if (hdr1->sh_addr > hdr2->sh_addr)
return 1;
/* Put !SHT_NOBITS sections before SHT_NOBITS ones.
The main loop in map_program_segments requires this. */
ret = (hdr1->sh_type == SHT_NOBITS) - (hdr2->sh_type == SHT_NOBITS);
if (ret != 0)
return ret;
if (hdr1->sh_size < hdr2->sh_size)
return -1;
if (hdr1->sh_size > hdr2->sh_size)
return 1;
return 0;
}
static boolean
prep_headers (abfd)
bfd *abfd;
{
Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
int count;
struct bfd_strtab_hash *shstrtab;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
i_ehdrp = elf_elfheader (abfd);
i_shdrp = elf_elfsections (abfd);
shstrtab = _bfd_elf_stringtab_init ();
if (shstrtab == NULL)
return false;
elf_shstrtab (abfd) = shstrtab;
i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
i_ehdrp->e_ident[EI_DATA] =
abfd->xvec->byteorder_big_p ? ELFDATA2MSB : ELFDATA2LSB;
i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
for (count = EI_PAD; count < EI_NIDENT; count++)
i_ehdrp->e_ident[count] = 0;
if ((abfd->flags & DYNAMIC) != 0)
i_ehdrp->e_type = ET_DYN;
else if ((abfd->flags & EXEC_P) != 0)
i_ehdrp->e_type = ET_EXEC;
else
i_ehdrp->e_type = ET_REL;
switch (bfd_get_arch (abfd))
{
case bfd_arch_unknown:
i_ehdrp->e_machine = EM_NONE;
break;
case bfd_arch_sparc:
if (bed->s->arch_size == 64)
i_ehdrp->e_machine = EM_SPARC64;
else
i_ehdrp->e_machine = EM_SPARC;
break;
case bfd_arch_i386:
i_ehdrp->e_machine = EM_386;
break;
case bfd_arch_m68k:
i_ehdrp->e_machine = EM_68K;
break;
case bfd_arch_m88k:
i_ehdrp->e_machine = EM_88K;
break;
case bfd_arch_i860:
i_ehdrp->e_machine = EM_860;
break;
case bfd_arch_mips: /* MIPS Rxxxx */
i_ehdrp->e_machine = EM_MIPS; /* only MIPS R3000 */
break;
case bfd_arch_hppa:
i_ehdrp->e_machine = EM_PARISC;
break;
case bfd_arch_powerpc:
i_ehdrp->e_machine = EM_PPC;
break;
/* start-sanitize-arc */
case bfd_arch_arc:
i_ehdrp->e_machine = EM_CYGNUS_ARC;
break;
/* end-sanitize-arc */
/* also note that EM_M32, AT&T WE32100 is unknown to bfd */
default:
i_ehdrp->e_machine = EM_NONE;
}
i_ehdrp->e_version = bed->s->ev_current;
i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
/* no program header, for now. */
i_ehdrp->e_phoff = 0;
i_ehdrp->e_phentsize = 0;
i_ehdrp->e_phnum = 0;
/* each bfd section is section header entry */
i_ehdrp->e_entry = bfd_get_start_address (abfd);
i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
/* if we're building an executable, we'll need a program header table */
if (abfd->flags & EXEC_P)
{
/* it all happens later */
#if 0
i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
/* elf_build_phdrs() returns a (NULL-terminated) array of
Elf_Internal_Phdrs */
i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
i_ehdrp->e_phoff = outbase;
outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
#endif
}
else
{
i_ehdrp->e_phentsize = 0;
i_phdrp = 0;
i_ehdrp->e_phoff = 0;
}
elf_tdata (abfd)->symtab_hdr.sh_name =
(unsigned int) _bfd_stringtab_add (shstrtab, ".symtab", true, false);
elf_tdata (abfd)->strtab_hdr.sh_name =
(unsigned int) _bfd_stringtab_add (shstrtab, ".strtab", true, false);
elf_tdata (abfd)->shstrtab_hdr.sh_name =
(unsigned int) _bfd_stringtab_add (shstrtab, ".shstrtab", true, false);
if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
|| elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
|| elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
return false;
return true;
}
/* Assign file positions for all the reloc sections which are not part
of the loadable file image. */
void
_bfd_elf_assign_file_positions_for_relocs (abfd)
bfd *abfd;
{
file_ptr off;
unsigned int i;
Elf_Internal_Shdr **shdrpp;
off = elf_tdata (abfd)->next_file_pos;
for (i = 1, shdrpp = elf_elfsections (abfd) + 1;
i < elf_elfheader (abfd)->e_shnum;
i++, shdrpp++)
{
Elf_Internal_Shdr *shdrp;
shdrp = *shdrpp;
if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
&& shdrp->sh_offset == -1)
off = _bfd_elf_assign_file_position_for_section (shdrp, off, true);
}
elf_tdata (abfd)->next_file_pos = off;
}
boolean
_bfd_elf_write_object_contents (abfd)
bfd *abfd;
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
Elf_Internal_Ehdr *i_ehdrp;
Elf_Internal_Shdr **i_shdrp;
boolean failed;
unsigned int count;
if (! abfd->output_has_begun
&& ! _bfd_elf_compute_section_file_positions (abfd,
(struct bfd_link_info *) NULL))
return false;
i_shdrp = elf_elfsections (abfd);
i_ehdrp = elf_elfheader (abfd);
failed = false;
bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
if (failed)
return false;
_bfd_elf_assign_file_positions_for_relocs (abfd);
/* After writing the headers, we need to write the sections too... */
for (count = 1; count < i_ehdrp->e_shnum; count++)
{
if (bed->elf_backend_section_processing)
(*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
if (i_shdrp[count]->contents)
{
if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
|| (bfd_write (i_shdrp[count]->contents, i_shdrp[count]->sh_size,
1, abfd)
!= i_shdrp[count]->sh_size))
return false;
}
}
/* Write out the section header names. */
if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
|| ! _bfd_stringtab_emit (abfd, elf_shstrtab (abfd)))
return false;
if (bed->elf_backend_final_write_processing)
(*bed->elf_backend_final_write_processing) (abfd,
elf_tdata (abfd)->linker);
return bed->s->write_shdrs_and_ehdr (abfd);
}
/* given a section, search the header to find them... */
int
_bfd_elf_section_from_bfd_section (abfd, asect)
bfd *abfd;
struct sec *asect;
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
int index;
Elf_Internal_Shdr *hdr;
int maxindex = elf_elfheader (abfd)->e_shnum;
for (index = 0; index < maxindex; index++)
{
hdr = i_shdrp[index];
if (hdr->bfd_section == asect)
return index;
}
if (bed->elf_backend_section_from_bfd_section)
{
for (index = 0; index < maxindex; index++)
{
int retval;
hdr = i_shdrp[index];
retval = index;
if ((*bed->elf_backend_section_from_bfd_section)
(abfd, hdr, asect, &retval))
return retval;
}
}
if (bfd_is_abs_section (asect))
return SHN_ABS;
if (bfd_is_com_section (asect))
return SHN_COMMON;
if (bfd_is_und_section (asect))
return SHN_UNDEF;
return -1;
}
/* given a symbol, return the bfd index for that symbol. */
int
_bfd_elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr)
bfd *abfd;
struct symbol_cache_entry **asym_ptr_ptr;
{
struct symbol_cache_entry *asym_ptr = *asym_ptr_ptr;
int idx;
flagword flags = asym_ptr->flags;
/* When gas creates relocations against local labels, it creates its
own symbol for the section, but does put the symbol into the
symbol chain, so udata is 0. When the linker is generating
relocatable output, this section symbol may be for one of the
input sections rather than the output section. */
if (asym_ptr->udata.i == 0
&& (flags & BSF_SECTION_SYM)
&& asym_ptr->section)
{
int indx;
if (asym_ptr->section->output_section != NULL)
indx = asym_ptr->section->output_section->index;
else
indx = asym_ptr->section->index;
if (elf_section_syms (abfd)[indx])
asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
}
idx = asym_ptr->udata.i;
BFD_ASSERT (idx != 0);
#if DEBUG & 4
{
fprintf (stderr,
"elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
(long) asym_ptr, asym_ptr->name, idx, flags, elf_symbol_flags (flags));
fflush (stderr);
}
#endif
return idx;
}
static boolean
swap_out_syms (abfd, sttp)
bfd *abfd;
struct bfd_strtab_hash **sttp;
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (!elf_map_symbols (abfd))
return false;
/* Dump out the symtabs. */
{
int symcount = bfd_get_symcount (abfd);
asymbol **syms = bfd_get_outsymbols (abfd);
struct bfd_strtab_hash *stt;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *symstrtab_hdr;
char *outbound_syms;
int idx;
stt = _bfd_elf_stringtab_init ();
if (stt == NULL)
return false;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
symtab_hdr->sh_type = SHT_SYMTAB;
symtab_hdr->sh_entsize = bed->s->sizeof_sym;
symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
symtab_hdr->sh_addralign = bed->s->file_align;
symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
symstrtab_hdr->sh_type = SHT_STRTAB;
outbound_syms = bfd_alloc (abfd,
(1 + symcount) * bed->s->sizeof_sym);
if (outbound_syms == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
symtab_hdr->contents = (PTR) outbound_syms;
/* now generate the data (for "contents") */
{
/* Fill in zeroth symbol and swap it out. */
Elf_Internal_Sym sym;
sym.st_name = 0;
sym.st_value = 0;
sym.st_size = 0;
sym.st_info = 0;
sym.st_other = 0;
sym.st_shndx = SHN_UNDEF;
bed->s->swap_symbol_out (abfd, &sym, (PTR) outbound_syms);
outbound_syms += bed->s->sizeof_sym;
}
for (idx = 0; idx < symcount; idx++)
{
Elf_Internal_Sym sym;
bfd_vma value = syms[idx]->value;
elf_symbol_type *type_ptr;
flagword flags = syms[idx]->flags;
if (flags & BSF_SECTION_SYM)
/* Section symbols have no names. */
sym.st_name = 0;
else
{
sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
syms[idx]->name,
true, false);
if (sym.st_name == (unsigned long) -1)
return false;
}
type_ptr = elf_symbol_from (abfd, syms[idx]);
if (bfd_is_com_section (syms[idx]->section))
{
/* ELF common symbols put the alignment into the `value' field,
and the size into the `size' field. This is backwards from
how BFD handles it, so reverse it here. */
sym.st_size = value;
if (type_ptr == NULL
|| type_ptr->internal_elf_sym.st_value == 0)
sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
else
sym.st_value = type_ptr->internal_elf_sym.st_value;
sym.st_shndx = _bfd_elf_section_from_bfd_section (abfd,
syms[idx]->section);
}
else
{
asection *sec = syms[idx]->section;
int shndx;
if (sec->output_section)
{
value += sec->output_offset;
sec = sec->output_section;
}
value += sec->vma;
sym.st_value = value;
sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
sym.st_shndx = shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
if (shndx == -1)
{
asection *sec2;
/* Writing this would be a hell of a lot easier if we had
some decent documentation on bfd, and knew what to expect
of the library, and what to demand of applications. For
example, it appears that `objcopy' might not set the
section of a symbol to be a section that is actually in
the output file. */
sec2 = bfd_get_section_by_name (abfd, sec->name);
BFD_ASSERT (sec2 != 0);
sym.st_shndx = shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
BFD_ASSERT (shndx != -1);
}
}
if (bfd_is_com_section (syms[idx]->section))
sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_OBJECT);
else if (bfd_is_und_section (syms[idx]->section))
sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
? STB_WEAK
: STB_GLOBAL),
((flags & BSF_FUNCTION)
? STT_FUNC
: STT_NOTYPE));
else if (flags & BSF_SECTION_SYM)
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
else if (flags & BSF_FILE)
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
else
{
int bind = STB_LOCAL;
int type = STT_OBJECT;
if (flags & BSF_LOCAL)
bind = STB_LOCAL;
else if (flags & BSF_WEAK)
bind = STB_WEAK;
else if (flags & BSF_GLOBAL)
bind = STB_GLOBAL;
if (flags & BSF_FUNCTION)
type = STT_FUNC;
sym.st_info = ELF_ST_INFO (bind, type);
}
sym.st_other = 0;
bed->s->swap_symbol_out (abfd, &sym, (PTR) outbound_syms);
outbound_syms += bed->s->sizeof_sym;
}
*sttp = stt;
symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
symstrtab_hdr->sh_type = SHT_STRTAB;
symstrtab_hdr->sh_flags = 0;
symstrtab_hdr->sh_addr = 0;
symstrtab_hdr->sh_entsize = 0;
symstrtab_hdr->sh_link = 0;
symstrtab_hdr->sh_info = 0;
symstrtab_hdr->sh_addralign = 1;
}
return true;
}
/* Return the number of bytes required to hold the symtab vector.
Note that we base it on the count plus 1, since we will null terminate
the vector allocated based on this size. However, the ELF symbol table
always has a dummy entry as symbol #0, so it ends up even. */
long
_bfd_elf_get_symtab_upper_bound (abfd)
bfd *abfd;
{
long symcount;
long symtab_size;
Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
return symtab_size;
}
long
_bfd_elf_get_dynamic_symtab_upper_bound (abfd)
bfd *abfd;
{
long symcount;
long symtab_size;
Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
if (elf_dynsymtab (abfd) == 0)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
return symtab_size;
}
long
_bfd_elf_get_reloc_upper_bound (abfd, asect)
bfd *abfd;
sec_ptr asect;
{
return (asect->reloc_count + 1) * sizeof (arelent *);
}
/* Canonicalize the relocs. */
long
_bfd_elf_canonicalize_reloc (abfd, section, relptr, symbols)
bfd *abfd;
sec_ptr section;
arelent **relptr;
asymbol **symbols;
{
arelent *tblptr;
unsigned int i;
if (! get_elf_backend_data (abfd)->s->slurp_reloc_table (abfd, section, symbols))
return -1;
tblptr = section->relocation;
for (i = 0; i < section->reloc_count; i++)
*relptr++ = tblptr++;
*relptr = NULL;
return section->reloc_count;
}
long
_bfd_elf_get_symtab (abfd, alocation)
bfd *abfd;
asymbol **alocation;
{
long symcount = get_elf_backend_data (abfd)->s->slurp_symbol_table (abfd, alocation, false);
if (symcount >= 0)
bfd_get_symcount (abfd) = symcount;
return symcount;
}
long
_bfd_elf_canonicalize_dynamic_symtab (abfd, alocation)
bfd *abfd;
asymbol **alocation;
{
return get_elf_backend_data (abfd)->s->slurp_symbol_table (abfd, alocation, true);
}
asymbol *
_bfd_elf_make_empty_symbol (abfd)
bfd *abfd;
{
elf_symbol_type *newsym;
newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (elf_symbol_type));
if (!newsym)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
else
{
newsym->symbol.the_bfd = abfd;
return &newsym->symbol;
}
}
void
_bfd_elf_get_symbol_info (ignore_abfd, symbol, ret)
bfd *ignore_abfd;
asymbol *symbol;
symbol_info *ret;
{
bfd_symbol_info (symbol, ret);
}
alent *
_bfd_elf_get_lineno (ignore_abfd, symbol)
bfd *ignore_abfd;
asymbol *symbol;
{
fprintf (stderr, "elf_get_lineno unimplemented\n");
fflush (stderr);
BFD_FAIL ();
return NULL;
}
boolean
_bfd_elf_set_arch_mach (abfd, arch, machine)
bfd *abfd;
enum bfd_architecture arch;
unsigned long machine;
{
/* If this isn't the right architecture for this backend, and this
isn't the generic backend, fail. */
if (arch != get_elf_backend_data (abfd)->arch
&& arch != bfd_arch_unknown
&& get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
return false;
return bfd_default_set_arch_mach (abfd, arch, machine);
}
/* Find the nearest line to a particular section and offset, for error
reporting. */
boolean
_bfd_elf_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;
{
const char *filename;
asymbol *func;
asymbol **p;
if (symbols == NULL)
return false;
filename = NULL;
func = NULL;
for (p = symbols; *p != NULL; p++)
{
elf_symbol_type *q;
q = (elf_symbol_type *) *p;
if (bfd_get_section (&q->symbol) != section)
continue;
switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
{
default:
break;
case STT_FILE:
filename = bfd_asymbol_name (&q->symbol);
break;
case STT_FUNC:
if (func == NULL
|| q->symbol.value <= offset)
func = (asymbol *) q;
break;
}
}
if (func == NULL)
return false;
*filename_ptr = filename;
*functionname_ptr = bfd_asymbol_name (func);
*line_ptr = 0;
return true;
}
int
_bfd_elf_sizeof_headers (abfd, reloc)
bfd *abfd;
boolean reloc;
{
int ret;
ret = get_elf_backend_data (abfd)->s->sizeof_ehdr;
if (! reloc)
ret += get_program_header_size (abfd, (Elf_Internal_Shdr **) NULL, 0,
(bfd_vma) 0);
return ret;
}
boolean
_bfd_elf_set_section_contents (abfd, section, location, offset, count)
bfd *abfd;
sec_ptr section;
PTR location;
file_ptr offset;
bfd_size_type count;
{
Elf_Internal_Shdr *hdr;
if (! abfd->output_has_begun
&& ! _bfd_elf_compute_section_file_positions (abfd,
(struct bfd_link_info *) NULL))
return false;
hdr = &elf_section_data (section)->this_hdr;
if (bfd_seek (abfd, hdr->sh_offset + offset, SEEK_SET) == -1)
return false;
if (bfd_write (location, 1, count, abfd) != count)
return false;
return true;
}
void
_bfd_elf_no_info_to_howto (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
fprintf (stderr, "elf RELA relocation support for target machine unimplemented\n");
fflush (stderr);
BFD_FAIL ();
}
#if 0
void
_bfd_elf_no_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf_Internal_Rel *dst;
{
fprintf (stderr, "elf REL relocation support for target machine unimplemented\n");
fflush (stderr);
BFD_FAIL ();
}
#endif
|