aboutsummaryrefslogtreecommitdiff
path: root/bfd/elflink.h
blob: 04ef289a9df9adb08858e3b5237ca00bd7551529 (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
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
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
/* ELF linker support.
   Copyright 1995, 1996 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.  */

/* ELF linker code.  */

static boolean elf_link_add_object_symbols
  PARAMS ((bfd *, struct bfd_link_info *));
static boolean elf_link_add_archive_symbols
  PARAMS ((bfd *, struct bfd_link_info *));
static Elf_Internal_Rela *elf_link_read_relocs
  PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
static boolean elf_export_symbol
  PARAMS ((struct elf_link_hash_entry *, PTR));
static boolean elf_adjust_dynamic_symbol
  PARAMS ((struct elf_link_hash_entry *, PTR));

/* This struct is used to pass information to routines called via
   elf_link_hash_traverse which must return failure.  */

struct elf_info_failed
{
  boolean failed;
  struct bfd_link_info *info;
};  

/* Given an ELF BFD, add symbols to the global hash table as
   appropriate.  */

boolean
elf_bfd_link_add_symbols (abfd, info)
     bfd *abfd;
     struct bfd_link_info *info;
{
  switch (bfd_get_format (abfd))
    {
    case bfd_object:
      return elf_link_add_object_symbols (abfd, info);
    case bfd_archive:
      return elf_link_add_archive_symbols (abfd, info);
    default:
      bfd_set_error (bfd_error_wrong_format);
      return false;
    }
}


/* Add symbols from an ELF archive file to the linker hash table.  We
   don't use _bfd_generic_link_add_archive_symbols because of a
   problem which arises on UnixWare.  The UnixWare libc.so is an
   archive which includes an entry libc.so.1 which defines a bunch of
   symbols.  The libc.so archive also includes a number of other
   object files, which also define symbols, some of which are the same
   as those defined in libc.so.1.  Correct linking requires that we
   consider each object file in turn, and include it if it defines any
   symbols we need.  _bfd_generic_link_add_archive_symbols does not do
   this; it looks through the list of undefined symbols, and includes
   any object file which defines them.  When this algorithm is used on
   UnixWare, it winds up pulling in libc.so.1 early and defining a
   bunch of symbols.  This means that some of the other objects in the
   archive are not included in the link, which is incorrect since they
   precede libc.so.1 in the archive.

   Fortunately, ELF archive handling is simpler than that done by
   _bfd_generic_link_add_archive_symbols, which has to allow for a.out
   oddities.  In ELF, if we find a symbol in the archive map, and the
   symbol is currently undefined, we know that we must pull in that
   object file.

   Unfortunately, we do have to make multiple passes over the symbol
   table until nothing further is resolved.  */

static boolean
elf_link_add_archive_symbols (abfd, info)
     bfd *abfd;
     struct bfd_link_info *info;
{
  symindex c;
  boolean *defined = NULL;
  boolean *included = NULL;
  carsym *symdefs;
  boolean loop;

  if (! bfd_has_map (abfd))
    {
      /* An empty archive is a special case.  */
      if (bfd_openr_next_archived_file (abfd, (bfd *) NULL) == NULL)
	return true;
      bfd_set_error (bfd_error_no_armap);
      return false;
    }

  /* Keep track of all symbols we know to be already defined, and all
     files we know to be already included.  This is to speed up the
     second and subsequent passes.  */
  c = bfd_ardata (abfd)->symdef_count;
  if (c == 0)
    return true;
  defined = (boolean *) bfd_malloc (c * sizeof (boolean));
  included = (boolean *) bfd_malloc (c * sizeof (boolean));
  if (defined == (boolean *) NULL || included == (boolean *) NULL)
    goto error_return;
  memset (defined, 0, c * sizeof (boolean));
  memset (included, 0, c * sizeof (boolean));

  symdefs = bfd_ardata (abfd)->symdefs;

  do
    {
      file_ptr last;
      symindex i;
      carsym *symdef;
      carsym *symdefend;

      loop = false;
      last = -1;

      symdef = symdefs;
      symdefend = symdef + c;
      for (i = 0; symdef < symdefend; symdef++, i++)
	{
	  struct elf_link_hash_entry *h;
	  bfd *element;
	  struct bfd_link_hash_entry *undefs_tail;
	  symindex mark;

	  if (defined[i] || included[i])
	    continue;
	  if (symdef->file_offset == last)
	    {
	      included[i] = true;
	      continue;
	    }

	  h = elf_link_hash_lookup (elf_hash_table (info), symdef->name,
				    false, false, false);
	  if (h == (struct elf_link_hash_entry *) NULL)
	    continue;
	  if (h->root.type != bfd_link_hash_undefined)
	    {
	      if (h->root.type != bfd_link_hash_undefweak)
		defined[i] = true;
	      continue;
	    }

	  /* We need to include this archive member.  */

	  element = _bfd_get_elt_at_filepos (abfd, symdef->file_offset);
	  if (element == (bfd *) NULL)
	    goto error_return;

	  if (! bfd_check_format (element, bfd_object))
	    goto error_return;

	  /* Doublecheck that we have not included this object
	     already--it should be impossible, but there may be
	     something wrong with the archive.  */
	  if (element->archive_pass != 0)
	    {
	      bfd_set_error (bfd_error_bad_value);
	      goto error_return;
	    }
	  element->archive_pass = 1;

	  undefs_tail = info->hash->undefs_tail;

	  if (! (*info->callbacks->add_archive_element) (info, element,
							 symdef->name))
	    goto error_return;
	  if (! elf_link_add_object_symbols (element, info))
	    goto error_return;

	  /* If there are any new undefined symbols, we need to make
	     another pass through the archive in order to see whether
	     they can be defined.  FIXME: This isn't perfect, because
	     common symbols wind up on undefs_tail and because an
	     undefined symbol which is defined later on in this pass
	     does not require another pass.  This isn't a bug, but it
	     does make the code less efficient than it could be.  */
	  if (undefs_tail != info->hash->undefs_tail)
	    loop = true;

	  /* Look backward to mark all symbols from this object file
	     which we have already seen in this pass.  */
	  mark = i;
	  do
	    {
	      included[mark] = true;
	      if (mark == 0)
		break;
	      --mark;
	    }
	  while (symdefs[mark].file_offset == symdef->file_offset);

	  /* We mark subsequent symbols from this object file as we go
	     on through the loop.  */
	  last = symdef->file_offset;
	}
    }
  while (loop);

  free (defined);
  free (included);

  return true;

 error_return:
  if (defined != (boolean *) NULL)
    free (defined);
  if (included != (boolean *) NULL)
    free (included);
  return false;
}

/* Add symbols from an ELF object file to the linker hash table.  */

static boolean
elf_link_add_object_symbols (abfd, info)
     bfd *abfd;
     struct bfd_link_info *info;
{
  boolean (*add_symbol_hook) PARAMS ((bfd *, struct bfd_link_info *,
				      const Elf_Internal_Sym *,
				      const char **, flagword *,
				      asection **, bfd_vma *));
  boolean (*check_relocs) PARAMS ((bfd *, struct bfd_link_info *,
				   asection *, const Elf_Internal_Rela *));
  boolean collect;
  Elf_Internal_Shdr *hdr;
  size_t symcount;
  size_t extsymcount;
  size_t extsymoff;
  Elf_External_Sym *buf = NULL;
  struct elf_link_hash_entry **sym_hash;
  boolean dynamic;
  Elf_External_Dyn *dynbuf = NULL;
  struct elf_link_hash_entry *weaks;
  Elf_External_Sym *esym;
  Elf_External_Sym *esymend;

  add_symbol_hook = get_elf_backend_data (abfd)->elf_add_symbol_hook;
  collect = get_elf_backend_data (abfd)->collect;

  /* As a GNU extension, any input sections which are named
     .gnu.warning.SYMBOL are treated as warning symbols for the given
     symbol.  This differs from .gnu.warning sections, which generate
     warnings when they are included in an output file.  */
  if (! info->shared)
    {
      asection *s;

      for (s = abfd->sections; s != NULL; s = s->next)
	{
	  const char *name;

	  name = bfd_get_section_name (abfd, s);
	  if (strncmp (name, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0)
	    {
	      char *msg;
	      bfd_size_type sz;

	      sz = bfd_section_size (abfd, s);
	      msg = (char *) bfd_alloc (abfd, sz);
	      if (msg == NULL)
		goto error_return;

	      if (! bfd_get_section_contents (abfd, s, msg, (file_ptr) 0, sz))
		goto error_return;

	      if (! (_bfd_generic_link_add_one_symbol
		     (info, abfd, 
		      name + sizeof ".gnu.warning." - 1,
		      BSF_WARNING, s, (bfd_vma) 0, msg, false, collect,
		      (struct bfd_link_hash_entry **) NULL)))
		goto error_return;

	      if (! info->relocateable)
		{
		  /* Clobber the section size so that the warning does
                     not get copied into the output file.  */
		  s->_raw_size = 0;
		}
	    }
	}
    }

  /* A stripped shared library might only have a dynamic symbol table,
     not a regular symbol table.  In that case we can still go ahead
     and link using the dynamic symbol table.  */
  if (elf_onesymtab (abfd) == 0
      && elf_dynsymtab (abfd) != 0)
    {
      elf_onesymtab (abfd) = elf_dynsymtab (abfd);
      elf_tdata (abfd)->symtab_hdr = elf_tdata (abfd)->dynsymtab_hdr;
    }

  hdr = &elf_tdata (abfd)->symtab_hdr;
  symcount = hdr->sh_size / sizeof (Elf_External_Sym);

  /* The sh_info field of the symtab header tells us where the
     external symbols start.  We don't care about the local symbols at
     this point.  */
  if (elf_bad_symtab (abfd))
    {
      extsymcount = symcount;
      extsymoff = 0;
    }
  else
    {
      extsymcount = symcount - hdr->sh_info;
      extsymoff = hdr->sh_info;
    }

  buf = ((Elf_External_Sym *)
	 bfd_malloc (extsymcount * sizeof (Elf_External_Sym)));
  if (buf == NULL && extsymcount != 0)
    goto error_return;

  /* We store a pointer to the hash table entry for each external
     symbol.  */
  sym_hash = ((struct elf_link_hash_entry **)
	      bfd_alloc (abfd,
			 extsymcount * sizeof (struct elf_link_hash_entry *)));
  if (sym_hash == NULL)
    goto error_return;
  elf_sym_hashes (abfd) = sym_hash;

  if (elf_elfheader (abfd)->e_type != ET_DYN)
    {
      dynamic = false;

      /* If we are creating a shared library, create all the dynamic
         sections immediately.  We need to attach them to something,
         so we attach them to this BFD, provided it is the right
         format.  FIXME: If there are no input BFD's of the same
         format as the output, we can't make a shared library.  */
      if (info->shared
	  && ! elf_hash_table (info)->dynamic_sections_created
	  && abfd->xvec == info->hash->creator)
	{
	  if (! elf_link_create_dynamic_sections (abfd, info))
	    goto error_return;
	}
    }
  else
    {
      asection *s;
      boolean add_needed;
      const char *name;
      bfd_size_type oldsize;
      bfd_size_type strindex;

      dynamic = true;

      /* You can't use -r against a dynamic object.  Also, there's no
	 hope of using a dynamic object which does not exactly match
	 the format of the output file.  */
      if (info->relocateable
	  || info->hash->creator != abfd->xvec)
	{
	  bfd_set_error (bfd_error_invalid_operation);
	  goto error_return;
	}

      /* Find the name to use in a DT_NEEDED entry that refers to this
	 object.  If the object has a DT_SONAME entry, we use it.
	 Otherwise, if the generic linker stuck something in
	 elf_dt_name, we use that.  Otherwise, we just use the file
	 name.  If the generic linker put a null string into
	 elf_dt_name, we don't make a DT_NEEDED entry at all, even if
	 there is a DT_SONAME entry.  */
      add_needed = true;
      name = bfd_get_filename (abfd);
      if (elf_dt_name (abfd) != NULL)
	{
	  name = elf_dt_name (abfd);
	  if (*name == '\0')
	    add_needed = false;
	}
      s = bfd_get_section_by_name (abfd, ".dynamic");
      if (s != NULL)
	{
	  Elf_External_Dyn *extdyn;
	  Elf_External_Dyn *extdynend;
	  int elfsec;
	  unsigned long link;

	  dynbuf = (Elf_External_Dyn *) bfd_malloc ((size_t) s->_raw_size);
	  if (dynbuf == NULL)
	    goto error_return;

	  if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf,
					  (file_ptr) 0, s->_raw_size))
	    goto error_return;

	  elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
	  if (elfsec == -1)
	    goto error_return;
	  link = elf_elfsections (abfd)[elfsec]->sh_link;

	  extdyn = dynbuf;
	  extdynend = extdyn + s->_raw_size / sizeof (Elf_External_Dyn);
	  for (; extdyn < extdynend; extdyn++)
	    {
	      Elf_Internal_Dyn dyn;

	      elf_swap_dyn_in (abfd, extdyn, &dyn);
	      if (dyn.d_tag == DT_SONAME)
		{
		  name = bfd_elf_string_from_elf_section (abfd, link,
							  dyn.d_un.d_val);
		  if (name == NULL)
		    goto error_return;
		}
	      if (dyn.d_tag == DT_NEEDED)
		{
		  struct bfd_link_needed_list *n, **pn;
		  char *fnm, *anm;

		  n = ((struct bfd_link_needed_list *)
		       bfd_alloc (abfd, sizeof (struct bfd_link_needed_list)));
		  fnm = bfd_elf_string_from_elf_section (abfd, link,
							 dyn.d_un.d_val);
		  if (n == NULL || fnm == NULL)
		    goto error_return;
		  anm = bfd_alloc (abfd, strlen (fnm) + 1);
		  if (anm == NULL)
		    goto error_return;
		  strcpy (anm, fnm);
		  n->name = anm;
		  n->by = abfd;
		  n->next = NULL;
		  for (pn = &elf_hash_table (info)->needed;
		       *pn != NULL;
		       pn = &(*pn)->next)
		    ;
		  *pn = n;
		}
	    }

	  free (dynbuf);
	  dynbuf = NULL;
	}

      /* We do not want to include any of the sections in a dynamic
	 object in the output file.  We hack by simply clobbering the
	 list of sections in the BFD.  This could be handled more
	 cleanly by, say, a new section flag; the existing
	 SEC_NEVER_LOAD flag is not the one we want, because that one
	 still implies that the section takes up space in the output
	 file.  */
      abfd->sections = NULL;
      abfd->section_count = 0;

      /* If this is the first dynamic object found in the link, create
	 the special sections required for dynamic linking.  */
      if (! elf_hash_table (info)->dynamic_sections_created)
	{
	  if (! elf_link_create_dynamic_sections (abfd, info))
	    goto error_return;
	}

      if (add_needed)
	{
	  /* Add a DT_NEEDED entry for this dynamic object.  */
	  oldsize = _bfd_stringtab_size (elf_hash_table (info)->dynstr);
	  strindex = _bfd_stringtab_add (elf_hash_table (info)->dynstr, name,
					 true, false);
	  if (strindex == (bfd_size_type) -1)
	    goto error_return;

	  if (oldsize == _bfd_stringtab_size (elf_hash_table (info)->dynstr))
	    {
	      asection *sdyn;
	      Elf_External_Dyn *dyncon, *dynconend;

	      /* The hash table size did not change, which means that
		 the dynamic object name was already entered.  If we
		 have already included this dynamic object in the
		 link, just ignore it.  There is no reason to include
		 a particular dynamic object more than once.  */
	      sdyn = bfd_get_section_by_name (elf_hash_table (info)->dynobj,
					      ".dynamic");
	      BFD_ASSERT (sdyn != NULL);

	      dyncon = (Elf_External_Dyn *) sdyn->contents;
	      dynconend = (Elf_External_Dyn *) (sdyn->contents +
						sdyn->_raw_size);
	      for (; dyncon < dynconend; dyncon++)
		{
		  Elf_Internal_Dyn dyn;

		  elf_swap_dyn_in (elf_hash_table (info)->dynobj, dyncon,
				   &dyn);
		  if (dyn.d_tag == DT_NEEDED
		      && dyn.d_un.d_val == strindex)
		    {
		      if (buf != NULL)
			free (buf);
		      return true;
		    }
		}
	    }

	  if (! elf_add_dynamic_entry (info, DT_NEEDED, strindex))
	    goto error_return;
	}

      /* Save the SONAME, if there is one, because sometimes the
         linker emulation code will need to know it.  */
      if (*name == '\0')
	name = bfd_get_filename (abfd);
      elf_dt_name (abfd) = name;
    }

  if (bfd_seek (abfd,
		hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym),
		SEEK_SET) != 0
      || (bfd_read ((PTR) buf, sizeof (Elf_External_Sym), extsymcount, abfd)
	  != extsymcount * sizeof (Elf_External_Sym)))
    goto error_return;

  weaks = NULL;

  esymend = buf + extsymcount;
  for (esym = buf; esym < esymend; esym++, sym_hash++)
    {
      Elf_Internal_Sym sym;
      int bind;
      bfd_vma value;
      asection *sec;
      flagword flags;
      const char *name;
      struct elf_link_hash_entry *h;
      boolean definition;
      boolean size_change_ok, type_change_ok;
      boolean new_weakdef;

      elf_swap_symbol_in (abfd, esym, &sym);

      flags = BSF_NO_FLAGS;
      sec = NULL;
      value = sym.st_value;
      *sym_hash = NULL;

      bind = ELF_ST_BIND (sym.st_info);
      if (bind == STB_LOCAL)
	{
	  /* This should be impossible, since ELF requires that all
	     global symbols follow all local symbols, and that sh_info
	     point to the first global symbol.  Unfortunatealy, Irix 5
	     screws this up.  */
	  continue;
	}
      else if (bind == STB_GLOBAL)
	{
	  if (sym.st_shndx != SHN_UNDEF
	      && sym.st_shndx != SHN_COMMON)
	    flags = BSF_GLOBAL;
	  else
	    flags = 0;
	}
      else if (bind == STB_WEAK)
	flags = BSF_WEAK;
      else
	{
	  /* Leave it up to the processor backend.  */
	}

      if (sym.st_shndx == SHN_UNDEF)
	sec = bfd_und_section_ptr;
      else if (sym.st_shndx > 0 && sym.st_shndx < SHN_LORESERVE)
	{
	  sec = section_from_elf_index (abfd, sym.st_shndx);
	  if (sec != NULL)
	    value -= sec->vma;
	  else
	    sec = bfd_abs_section_ptr;
	}
      else if (sym.st_shndx == SHN_ABS)
	sec = bfd_abs_section_ptr;
      else if (sym.st_shndx == SHN_COMMON)
	{
	  sec = bfd_com_section_ptr;
	  /* What ELF calls the size we call the value.  What ELF
	     calls the value we call the alignment.  */
	  value = sym.st_size;
	}
      else
	{
	  /* Leave it up to the processor backend.  */
	}

      name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, sym.st_name);
      if (name == (const char *) NULL)
	goto error_return;

      if (add_symbol_hook)
	{
	  if (! (*add_symbol_hook) (abfd, info, &sym, &name, &flags, &sec,
				    &value))
	    goto error_return;

	  /* The hook function sets the name to NULL if this symbol
	     should be skipped for some reason.  */
	  if (name == (const char *) NULL)
	    continue;
	}

      /* Sanity check that all possibilities were handled.  */
      if (sec == (asection *) NULL)
	{
	  bfd_set_error (bfd_error_bad_value);
	  goto error_return;
	}

      if (bfd_is_und_section (sec)
	  || bfd_is_com_section (sec))
	definition = false;
      else
	definition = true;

      size_change_ok = false;
      type_change_ok = get_elf_backend_data (abfd)->type_change_ok;
      if (info->hash->creator->flavour == bfd_target_elf_flavour)
	{
	  /* We need to look up the symbol now in order to get some of
	     the dynamic object handling right.  We pass the hash
	     table entry in to _bfd_generic_link_add_one_symbol so
	     that it does not have to look it up again.  */
	  if (! bfd_is_und_section (sec))
	    h = elf_link_hash_lookup (elf_hash_table (info), name,
				      true, false, false);
	  else
	    h = ((struct elf_link_hash_entry *)
		 bfd_wrapped_link_hash_lookup (abfd, info, name, true,
					       false, false));
	  if (h == NULL)
	    goto error_return;
	  *sym_hash = h;

	  if (h->root.type == bfd_link_hash_new)
	    h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;

	  while (h->root.type == bfd_link_hash_indirect
		 || h->root.type == bfd_link_hash_warning)
	    h = (struct elf_link_hash_entry *) h->root.u.i.link;

	  /* It's OK to change the type if it used to be a weak
             definition.  */
	  if (h->root.type == bfd_link_hash_defweak
	      || h->root.type == bfd_link_hash_undefweak)
	    type_change_ok = true;

	  /* It's OK to change the size if it used to be a weak
	     definition, or if it used to be undefined, or if we will
	     be overriding an old definition.  */
	  if (type_change_ok
	      || h->root.type == bfd_link_hash_undefined)
	    size_change_ok = true;

	  /* If we are looking at a dynamic object, and this is a
	     definition, we need to see if it has already been defined
	     by some other object.  If it has, we want to use the
	     existing definition, and we do not want to report a
	     multiple symbol definition error; we do this by
	     clobbering sec to be bfd_und_section_ptr.  */
	  if (dynamic && definition)
	    {
	      if (h->root.type == bfd_link_hash_defined
		  || h->root.type == bfd_link_hash_defweak
		  || (h->root.type == bfd_link_hash_common
		      && bind == STB_WEAK))
		{
		  sec = bfd_und_section_ptr;
		  definition = false;
		  size_change_ok = true;
		}
	    }

	  /* Similarly, if we are not looking at a dynamic object, and
	     we have a definition, we want to override any definition
	     we may have from a dynamic object.  Symbols from regular
	     files always take precedence over symbols from dynamic
	     objects, even if they are defined after the dynamic
	     object in the link.  */
	  if (! dynamic
	      && definition
	      && (h->root.type == bfd_link_hash_defined
		  || h->root.type == bfd_link_hash_defweak)
	      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
	      && (bfd_get_flavour (h->root.u.def.section->owner)
		  == bfd_target_elf_flavour)
	      && (elf_elfheader (h->root.u.def.section->owner)->e_type
		  == ET_DYN))
	    {
	      /* Change the hash table entry to undefined, and let
		 _bfd_generic_link_add_one_symbol do the right thing
		 with the new definition.  */
	      h->root.type = bfd_link_hash_undefined;
	      h->root.u.undef.abfd = h->root.u.def.section->owner;
	      size_change_ok = true;
	    }
	}

      if (! (_bfd_generic_link_add_one_symbol
	     (info, abfd, name, flags, sec, value, (const char *) NULL,
	      false, collect, (struct bfd_link_hash_entry **) sym_hash)))
	goto error_return;

      h = *sym_hash;
      while (h->root.type == bfd_link_hash_indirect
	     || h->root.type == bfd_link_hash_warning)
	h = (struct elf_link_hash_entry *) h->root.u.i.link;
      *sym_hash = h;

      new_weakdef = false;
      if (dynamic
	  && definition
	  && (flags & BSF_WEAK) != 0
	  && ELF_ST_TYPE (sym.st_info) != STT_FUNC
	  && info->hash->creator->flavour == bfd_target_elf_flavour
	  && h->weakdef == NULL)
	{
	  /* Keep a list of all weak defined non function symbols from
	     a dynamic object, using the weakdef field.  Later in this
	     function we will set the weakdef field to the correct
	     value.  We only put non-function symbols from dynamic
	     objects on this list, because that happens to be the only
	     time we need to know the normal symbol corresponding to a
	     weak symbol, and the information is time consuming to
	     figure out.  If the weakdef field is not already NULL,
	     then this symbol was already defined by some previous
	     dynamic object, and we will be using that previous
	     definition anyhow.  */

	  h->weakdef = weaks;
	  weaks = h;
	  new_weakdef = true;
	}

      /* Get the alignment of a common symbol.  */
      if (sym.st_shndx == SHN_COMMON
	  && h->root.type == bfd_link_hash_common)
	h->root.u.c.p->alignment_power = bfd_log2 (sym.st_value);

      if (info->hash->creator->flavour == bfd_target_elf_flavour)
	{
	  int old_flags;
	  boolean dynsym;
	  int new_flag;

	  /* Remember the symbol size and type.  */
	  if (sym.st_size != 0
	      && (definition || h->size == 0))
	    {
	      if (h->size != 0 && h->size != sym.st_size && ! size_change_ok)
		(*_bfd_error_handler)
		  ("Warning: size of symbol `%s' changed from %lu to %lu in %s",
		   name, (unsigned long) h->size, (unsigned long) sym.st_size,
		   bfd_get_filename (abfd));

	      h->size = sym.st_size;
	    }
	  if (ELF_ST_TYPE (sym.st_info) != STT_NOTYPE
	      && (definition || h->type == STT_NOTYPE))
	    {
	      if (h->type != STT_NOTYPE
		  && h->type != ELF_ST_TYPE (sym.st_info)
		  && ! type_change_ok)
		(*_bfd_error_handler)
		  ("Warning: type of symbol `%s' changed from %d to %d in %s",
		   name, h->type, ELF_ST_TYPE (sym.st_info),
		   bfd_get_filename (abfd));

	      h->type = ELF_ST_TYPE (sym.st_info);
	    }

	  /* Set a flag in the hash table entry indicating the type of
	     reference or definition we just found.  Keep a count of
	     the number of dynamic symbols we find.  A dynamic symbol
	     is one which is referenced or defined by both a regular
	     object and a shared object, or one which is referenced or
	     defined by more than one shared object.  */
	  old_flags = h->elf_link_hash_flags;
	  dynsym = false;
	  if (! dynamic)
	    {
	      if (! definition)
		new_flag = ELF_LINK_HASH_REF_REGULAR;
	      else
		new_flag = ELF_LINK_HASH_DEF_REGULAR;
	      if (info->shared
		  || (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC
				   | ELF_LINK_HASH_REF_DYNAMIC)) != 0)
		dynsym = true;
	    }
	  else
	    {
	      if (! definition)
		new_flag = ELF_LINK_HASH_REF_DYNAMIC;
	      else
		new_flag = ELF_LINK_HASH_DEF_DYNAMIC;
	      if ((old_flags & new_flag) != 0
		  || (old_flags & (ELF_LINK_HASH_DEF_REGULAR
				   | ELF_LINK_HASH_REF_REGULAR)) != 0
		  || (h->weakdef != NULL
		      && (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC
				       | ELF_LINK_HASH_REF_DYNAMIC)) != 0))
		dynsym = true;
	    }

	  h->elf_link_hash_flags |= new_flag;
	  if (dynsym && h->dynindx == -1)
	    {
	      if (! _bfd_elf_link_record_dynamic_symbol (info, h))
		goto error_return;
	      if (h->weakdef != NULL
		  && ! new_weakdef
		  && h->weakdef->dynindx == -1)
		{
		  if (! _bfd_elf_link_record_dynamic_symbol (info,
							     h->weakdef))
		    goto error_return;
		}
	    }
	}
    }

  /* Now set the weakdefs field correctly for all the weak defined
     symbols we found.  The only way to do this is to search all the
     symbols.  Since we only need the information for non functions in
     dynamic objects, that's the only time we actually put anything on
     the list WEAKS.  We need this information so that if a regular
     object refers to a symbol defined weakly in a dynamic object, the
     real symbol in the dynamic object is also put in the dynamic
     symbols; we also must arrange for both symbols to point to the
     same memory location.  We could handle the general case of symbol
     aliasing, but a general symbol alias can only be generated in
     assembler code, handling it correctly would be very time
     consuming, and other ELF linkers don't handle general aliasing
     either.  */
  while (weaks != NULL)
    {
      struct elf_link_hash_entry *hlook;
      asection *slook;
      bfd_vma vlook;
      struct elf_link_hash_entry **hpp;
      struct elf_link_hash_entry **hppend;

      hlook = weaks;
      weaks = hlook->weakdef;
      hlook->weakdef = NULL;

      BFD_ASSERT (hlook->root.type == bfd_link_hash_defined
		  || hlook->root.type == bfd_link_hash_defweak
		  || hlook->root.type == bfd_link_hash_common
		  || hlook->root.type == bfd_link_hash_indirect);
      slook = hlook->root.u.def.section;
      vlook = hlook->root.u.def.value;

      hpp = elf_sym_hashes (abfd);
      hppend = hpp + extsymcount;
      for (; hpp < hppend; hpp++)
	{
	  struct elf_link_hash_entry *h;

	  h = *hpp;
	  if (h != NULL && h != hlook
	      && h->root.type == bfd_link_hash_defined
	      && h->root.u.def.section == slook
	      && h->root.u.def.value == vlook)
	    {
	      hlook->weakdef = h;

	      /* If the weak definition is in the list of dynamic
		 symbols, make sure the real definition is put there
		 as well.  */
	      if (hlook->dynindx != -1
		  && h->dynindx == -1)
		{
		  if (! _bfd_elf_link_record_dynamic_symbol (info, h))
		    goto error_return;
		}

	      break;
	    }
	}
    }

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

  /* If this object is the same format as the output object, and it is
     not a shared library, then let the backend look through the
     relocs.

     This is required to build global offset table entries and to
     arrange for dynamic relocs.  It is not required for the
     particular common case of linking non PIC code, even when linking
     against shared libraries, but unfortunately there is no way of
     knowing whether an object file has been compiled PIC or not.
     Looking through the relocs is not particularly time consuming.
     The problem is that we must either (1) keep the relocs in memory,
     which causes the linker to require additional runtime memory or
     (2) read the relocs twice from the input file, which wastes time.
     This would be a good case for using mmap.

     I have no idea how to handle linking PIC code into a file of a
     different format.  It probably can't be done.  */
  check_relocs = get_elf_backend_data (abfd)->check_relocs;
  if (! dynamic
      && abfd->xvec == info->hash->creator
      && check_relocs != NULL)
    {
      asection *o;

      for (o = abfd->sections; o != NULL; o = o->next)
	{
	  Elf_Internal_Rela *internal_relocs;
	  boolean ok;

	  if ((o->flags & SEC_RELOC) == 0
	      || o->reloc_count == 0)
	    continue;

	  /* I believe we can ignore the relocs for any section which
             does not form part of the final process image, such as a
             debugging section.  */
	  if ((o->flags & SEC_ALLOC) == 0)
	    continue;

	  internal_relocs = elf_link_read_relocs (abfd, o, (PTR) NULL,
						  (Elf_Internal_Rela *) NULL,
						  info->keep_memory);
	  if (internal_relocs == NULL)
	    goto error_return;

	  ok = (*check_relocs) (abfd, info, o, internal_relocs);

	  if (! info->keep_memory)
	    free (internal_relocs);

	  if (! ok)
	    goto error_return;
	}
    }

  /* If this is a non-traditional, non-relocateable link, try to
     optimize the handling of the .stab/.stabstr sections.  */
  if (! dynamic
      && ! info->relocateable
      && ! info->traditional_format
      && info->hash->creator->flavour == bfd_target_elf_flavour
      && (info->strip != strip_all && info->strip != strip_debugger))
    {
      asection *stab, *stabstr;

      stab = bfd_get_section_by_name (abfd, ".stab");
      if (stab != NULL)
	{
	  stabstr = bfd_get_section_by_name (abfd, ".stabstr");

	  if (stabstr != NULL)
	    {
	      struct bfd_elf_section_data *secdata;

	      secdata = elf_section_data (stab);
	      if (! _bfd_link_section_stabs (abfd,
					     &elf_hash_table (info)->stab_info,
					     stab, stabstr,
					     &secdata->stab_info))
		goto error_return;
	    }
	}
    }

  return true;

 error_return:
  if (buf != NULL)
    free (buf);
  if (dynbuf != NULL)
    free (dynbuf);
  return false;
}

/* Create some sections which will be filled in with dynamic linking
   information.  ABFD is an input file which requires dynamic sections
   to be created.  The dynamic sections take up virtual memory space
   when the final executable is run, so we need to create them before
   addresses are assigned to the output sections.  We work out the
   actual contents and size of these sections later.  */

boolean
elf_link_create_dynamic_sections (abfd, info)
     bfd *abfd;
     struct bfd_link_info *info;
{
  flagword flags;
  register asection *s;
  struct elf_link_hash_entry *h;
  struct elf_backend_data *bed;

  if (elf_hash_table (info)->dynamic_sections_created)
    return true;

  /* Make sure that all dynamic sections use the same input BFD.  */
  if (elf_hash_table (info)->dynobj == NULL)
    elf_hash_table (info)->dynobj = abfd;
  else
    abfd = elf_hash_table (info)->dynobj;

  /* Note that we set the SEC_IN_MEMORY flag for all of these
     sections.  */
  flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;

  /* A dynamically linked executable has a .interp section, but a
     shared library does not.  */
  if (! info->shared)
    {
      s = bfd_make_section (abfd, ".interp");
      if (s == NULL
	  || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY))
	return false;
    }

  s = bfd_make_section (abfd, ".dynsym");
  if (s == NULL
      || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
      || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
    return false;

  s = bfd_make_section (abfd, ".dynstr");
  if (s == NULL
      || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY))
    return false;

  /* Create a strtab to hold the dynamic symbol names.  */
  if (elf_hash_table (info)->dynstr == NULL)
    {
      elf_hash_table (info)->dynstr = elf_stringtab_init ();
      if (elf_hash_table (info)->dynstr == NULL)
	return false;
    }

  s = bfd_make_section (abfd, ".dynamic");
  if (s == NULL
      || ! bfd_set_section_flags (abfd, s, flags)
      || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
    return false;

  /* The special symbol _DYNAMIC is always set to the start of the
     .dynamic section.  This call occurs before we have processed the
     symbols for any dynamic object, so we don't have to worry about
     overriding a dynamic definition.  We could set _DYNAMIC in a
     linker script, but we only want to define it if we are, in fact,
     creating a .dynamic section.  We don't want to define it if there
     is no .dynamic section, since on some ELF platforms the start up
     code examines it to decide how to initialize the process.  */
  h = NULL;
  if (! (_bfd_generic_link_add_one_symbol
	 (info, abfd, "_DYNAMIC", BSF_GLOBAL, s, (bfd_vma) 0,
	  (const char *) NULL, false, get_elf_backend_data (abfd)->collect,
	  (struct bfd_link_hash_entry **) &h)))
    return false;
  h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
  h->type = STT_OBJECT;

  if (info->shared
      && ! _bfd_elf_link_record_dynamic_symbol (info, h))
    return false;

  s = bfd_make_section (abfd, ".hash");
  if (s == NULL
      || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
      || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
    return false;

  /* Let the backend create the rest of the sections.  This lets the
     backend set the right flags.  The backend will normally create
     the .got and .plt sections.  */
  bed = get_elf_backend_data (abfd);
  if (! (*bed->elf_backend_create_dynamic_sections) (abfd, info))
    return false;

  elf_hash_table (info)->dynamic_sections_created = true;

  return true;
}

/* Add an entry to the .dynamic table.  */

boolean
elf_add_dynamic_entry (info, tag, val)
     struct bfd_link_info *info;
     bfd_vma tag;
     bfd_vma val;
{
  Elf_Internal_Dyn dyn;
  bfd *dynobj;
  asection *s;
  size_t newsize;
  bfd_byte *newcontents;

  dynobj = elf_hash_table (info)->dynobj;

  s = bfd_get_section_by_name (dynobj, ".dynamic");
  BFD_ASSERT (s != NULL);

  newsize = s->_raw_size + sizeof (Elf_External_Dyn);
  newcontents = (bfd_byte *) bfd_realloc (s->contents, newsize);
  if (newcontents == NULL)
    return false;

  dyn.d_tag = tag;
  dyn.d_un.d_val = val;
  elf_swap_dyn_out (dynobj, &dyn,
		    (Elf_External_Dyn *) (newcontents + s->_raw_size));

  s->_raw_size = newsize;
  s->contents = newcontents;

  return true;
}


/* Read and swap the relocs for a section.  They may have been cached.
   If the EXTERNAL_RELOCS and INTERNAL_RELOCS arguments are not NULL,
   they are used as buffers to read into.  They are known to be large
   enough.  If the INTERNAL_RELOCS relocs argument is NULL, the return
   value is allocated using either malloc or bfd_alloc, according to
   the KEEP_MEMORY argument.  */

static Elf_Internal_Rela *
elf_link_read_relocs (abfd, o, external_relocs, internal_relocs, keep_memory)
     bfd *abfd;
     asection *o;
     PTR external_relocs;
     Elf_Internal_Rela *internal_relocs;
     boolean keep_memory;
{
  Elf_Internal_Shdr *rel_hdr;
  PTR alloc1 = NULL;
  Elf_Internal_Rela *alloc2 = NULL;

  if (elf_section_data (o)->relocs != NULL)
    return elf_section_data (o)->relocs;

  if (o->reloc_count == 0)
    return NULL;

  rel_hdr = &elf_section_data (o)->rel_hdr;

  if (internal_relocs == NULL)
    {
      size_t size;

      size = o->reloc_count * sizeof (Elf_Internal_Rela);
      if (keep_memory)
	internal_relocs = (Elf_Internal_Rela *) bfd_alloc (abfd, size);
      else
	internal_relocs = alloc2 = (Elf_Internal_Rela *) bfd_malloc (size);
      if (internal_relocs == NULL)
	goto error_return;
    }

  if (external_relocs == NULL)
    {
      alloc1 = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size);
      if (alloc1 == NULL)
	goto error_return;
      external_relocs = alloc1;
    }

  if ((bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0)
      || (bfd_read (external_relocs, 1, rel_hdr->sh_size, abfd)
	  != rel_hdr->sh_size))
    goto error_return;

  /* Swap in the relocs.  For convenience, we always produce an
     Elf_Internal_Rela array; if the relocs are Rel, we set the addend
     to 0.  */
  if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
    {
      Elf_External_Rel *erel;
      Elf_External_Rel *erelend;
      Elf_Internal_Rela *irela;

      erel = (Elf_External_Rel *) external_relocs;
      erelend = erel + o->reloc_count;
      irela = internal_relocs;
      for (; erel < erelend; erel++, irela++)
	{
	  Elf_Internal_Rel irel;

	  elf_swap_reloc_in (abfd, erel, &irel);
	  irela->r_offset = irel.r_offset;
	  irela->r_info = irel.r_info;
	  irela->r_addend = 0;
	}
    }
  else
    {
      Elf_External_Rela *erela;
      Elf_External_Rela *erelaend;
      Elf_Internal_Rela *irela;

      BFD_ASSERT (rel_hdr->sh_entsize == sizeof (Elf_External_Rela));

      erela = (Elf_External_Rela *) external_relocs;
      erelaend = erela + o->reloc_count;
      irela = internal_relocs;
      for (; erela < erelaend; erela++, irela++)
	elf_swap_reloca_in (abfd, erela, irela);
    }

  /* Cache the results for next time, if we can.  */
  if (keep_memory)
    elf_section_data (o)->relocs = internal_relocs;
		 
  if (alloc1 != NULL)
    free (alloc1);

  /* Don't free alloc2, since if it was allocated we are passing it
     back (under the name of internal_relocs).  */

  return internal_relocs;

 error_return:
  if (alloc1 != NULL)
    free (alloc1);
  if (alloc2 != NULL)
    free (alloc2);
  return NULL;
}


/* Record an assignment to a symbol made by a linker script.  We need
   this in case some dynamic object refers to this symbol.  */

/*ARGSUSED*/
boolean
NAME(bfd_elf,record_link_assignment) (output_bfd, info, name, provide)
     bfd *output_bfd;
     struct bfd_link_info *info;
     const char *name;
     boolean provide;
{
  struct elf_link_hash_entry *h;

  if (info->hash->creator->flavour != bfd_target_elf_flavour)
    return true;

  h = elf_link_hash_lookup (elf_hash_table (info), name, true, true, false);
  if (h == NULL)
    return false;

  if (h->root.type == bfd_link_hash_new)
    h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;

  /* If this symbol is being provided by the linker script, and it is
     currently defined by a dynamic object, but not by a regular
     object, then mark it as undefined so that the generic linker will
     force the correct value.  */
  if (provide
      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
    h->root.type = bfd_link_hash_undefined;

  h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
  h->type = STT_OBJECT;

  if (((h->elf_link_hash_flags & (ELF_LINK_HASH_DEF_DYNAMIC
				  | ELF_LINK_HASH_REF_DYNAMIC)) != 0
       || info->shared)
      && h->dynindx == -1)
    {
      if (! _bfd_elf_link_record_dynamic_symbol (info, h))
	return false;

      /* If this is a weak defined symbol, and we know a corresponding
	 real symbol from the same dynamic object, make sure the real
	 symbol is also made into a dynamic symbol.  */
      if (h->weakdef != NULL
	  && h->weakdef->dynindx == -1)
	{
	  if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
	    return false;
	}
    }

  return true;
}


/* Array used to determine the number of hash table buckets to use
   based on the number of symbols there are.  If there are fewer than
   3 symbols we use 1 bucket, fewer than 17 symbols we use 3 buckets,
   fewer than 37 we use 17 buckets, and so forth.  We never use more
   than 521 buckets.  */

static const size_t elf_buckets[] =
{
  1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 0
};

/* Set up the sizes and contents of the ELF dynamic sections.  This is
   called by the ELF linker emulation before_allocation routine.  We
   must set the sizes of the sections before the linker sets the
   addresses of the various sections.  */

boolean
NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
				     export_dynamic, info, sinterpptr)
     bfd *output_bfd;
     const char *soname;
     const char *rpath;
     boolean export_dynamic;
     struct bfd_link_info *info;
     asection **sinterpptr;
{
  bfd *dynobj;
  struct elf_backend_data *bed;

  *sinterpptr = NULL;

  if (info->hash->creator->flavour != bfd_target_elf_flavour)
    return true;

  dynobj = elf_hash_table (info)->dynobj;

  /* If there were no dynamic objects in the link, there is nothing to
     do here.  */
  if (dynobj == NULL)
    return true;

  /* If we are supposed to export all symbols into the dynamic symbol
     table (this is not the normal case), then do so.  */
  if (export_dynamic)
    {
      struct elf_info_failed eif;

      eif.failed = false;
      eif.info = info;
      elf_link_hash_traverse (elf_hash_table (info), elf_export_symbol,
			      (PTR) &eif);
      if (eif.failed)
	return false;
    }

  if (elf_hash_table (info)->dynamic_sections_created)
    {
      struct elf_info_failed eif;
      struct elf_link_hash_entry *h;
      bfd_size_type strsize;

      *sinterpptr = bfd_get_section_by_name (dynobj, ".interp");
      BFD_ASSERT (*sinterpptr != NULL || info->shared);

      if (soname != NULL)
	{
	  bfd_size_type indx;

	  indx = _bfd_stringtab_add (elf_hash_table (info)->dynstr, soname,
				     true, true);
	  if (indx == (bfd_size_type) -1
	      || ! elf_add_dynamic_entry (info, DT_SONAME, indx))
	    return false;
	}      

      if (info->symbolic)
	{
	  if (! elf_add_dynamic_entry (info, DT_SYMBOLIC, 0))
	    return false;
	}

      if (rpath != NULL)
	{
	  bfd_size_type indx;

	  indx = _bfd_stringtab_add (elf_hash_table (info)->dynstr, rpath,
				     true, true);
	  if (indx == (bfd_size_type) -1
	      || ! elf_add_dynamic_entry (info, DT_RPATH, indx))
	    return false;
	}

      /* Find all symbols which were defined in a dynamic object and make
	 the backend pick a reasonable value for them.  */
      eif.failed = false;
      eif.info = info;
      elf_link_hash_traverse (elf_hash_table (info),
			      elf_adjust_dynamic_symbol,
			      (PTR) &eif);
      if (eif.failed)
	return false;

      /* Add some entries to the .dynamic section.  We fill in some of the
	 values later, in elf_bfd_final_link, but we must add the entries
	 now so that we know the final size of the .dynamic section.  */
      h =  elf_link_hash_lookup (elf_hash_table (info), "_init", false,
				false, false);
      if (h != NULL
	  && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
					| ELF_LINK_HASH_DEF_REGULAR)) != 0)
	{
	  if (! elf_add_dynamic_entry (info, DT_INIT, 0))
	    return false;
	}
      h =  elf_link_hash_lookup (elf_hash_table (info), "_fini", false,
				 false, false);
      if (h != NULL
	  && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
					| ELF_LINK_HASH_DEF_REGULAR)) != 0)
	{
	  if (! elf_add_dynamic_entry (info, DT_FINI, 0))
	    return false;
	}
      strsize = _bfd_stringtab_size (elf_hash_table (info)->dynstr);
      if (! elf_add_dynamic_entry (info, DT_HASH, 0)
	  || ! elf_add_dynamic_entry (info, DT_STRTAB, 0)
	  || ! elf_add_dynamic_entry (info, DT_SYMTAB, 0)
	  || ! elf_add_dynamic_entry (info, DT_STRSZ, strsize)
	  || ! elf_add_dynamic_entry (info, DT_SYMENT,
				      sizeof (Elf_External_Sym)))
	return false;
    }

  /* The backend must work out the sizes of all the other dynamic
     sections.  */
  bed = get_elf_backend_data (output_bfd);
  if (! (*bed->elf_backend_size_dynamic_sections) (output_bfd, info))
    return false;

  if (elf_hash_table (info)->dynamic_sections_created)
    {
      size_t dynsymcount;
      asection *s;
      size_t i;
      size_t bucketcount = 0;
      Elf_Internal_Sym isym;

      /* Set the size of the .dynsym and .hash sections.  We counted
	 the number of dynamic symbols in elf_link_add_object_symbols.
	 We will build the contents of .dynsym and .hash when we build
	 the final symbol table, because until then we do not know the
	 correct value to give the symbols.  We built the .dynstr
	 section as we went along in elf_link_add_object_symbols.  */
      dynsymcount = elf_hash_table (info)->dynsymcount;
      s = bfd_get_section_by_name (dynobj, ".dynsym");
      BFD_ASSERT (s != NULL);
      s->_raw_size = dynsymcount * sizeof (Elf_External_Sym);
      s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
      if (s->contents == NULL && s->_raw_size != 0)
	return false;

      /* The first entry in .dynsym is a dummy symbol.  */
      isym.st_value = 0;
      isym.st_size = 0;
      isym.st_name = 0;
      isym.st_info = 0;
      isym.st_other = 0;
      isym.st_shndx = 0;
      elf_swap_symbol_out (output_bfd, &isym,
			   (PTR) (Elf_External_Sym *) s->contents);

      for (i = 0; elf_buckets[i] != 0; i++)
	{
	  bucketcount = elf_buckets[i];
	  if (dynsymcount < elf_buckets[i + 1])
	    break;
	}

      s = bfd_get_section_by_name (dynobj, ".hash");
      BFD_ASSERT (s != NULL);
      s->_raw_size = (2 + bucketcount + dynsymcount) * (ARCH_SIZE / 8);
      s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
      if (s->contents == NULL)
	return false;
      memset (s->contents, 0, (size_t) s->_raw_size);

      put_word (output_bfd, bucketcount, s->contents);
      put_word (output_bfd, dynsymcount, s->contents + (ARCH_SIZE / 8));

      elf_hash_table (info)->bucketcount = bucketcount;

      s = bfd_get_section_by_name (dynobj, ".dynstr");
      BFD_ASSERT (s != NULL);
      s->_raw_size = _bfd_stringtab_size (elf_hash_table (info)->dynstr);

      if (! elf_add_dynamic_entry (info, DT_NULL, 0))
	return false;
    }

  return true;
}


/* This routine is used to export all defined symbols into the dynamic
   symbol table.  It is called via elf_link_hash_traverse.  */

static boolean
elf_export_symbol (h, data)
     struct elf_link_hash_entry *h;
     PTR data;
{
  struct elf_info_failed *eif = (struct elf_info_failed *) data;

  if (h->dynindx == -1
      && (h->elf_link_hash_flags
	  & (ELF_LINK_HASH_DEF_REGULAR | ELF_LINK_HASH_REF_REGULAR)) != 0)
    {
      if (! _bfd_elf_link_record_dynamic_symbol (eif->info, h))
	{
	  eif->failed = true;
	  return false;
	}
    }

  return true;
}


/* Make the backend pick a good value for a dynamic symbol.  This is
   called via elf_link_hash_traverse, and also calls itself
   recursively.  */

static boolean
elf_adjust_dynamic_symbol (h, data)
     struct elf_link_hash_entry *h;
     PTR data;
{
  struct elf_info_failed *eif = (struct elf_info_failed *) data;
  bfd *dynobj;
  struct elf_backend_data *bed;

  /* If this symbol was mentioned in a non-ELF file, try to set
     DEF_REGULAR and REF_REGULAR correctly.  This is the only way to
     permit a non-ELF file to correctly refer to a symbol defined in
     an ELF dynamic object.  */
  if ((h->elf_link_hash_flags & ELF_LINK_NON_ELF) != 0)
    {
      if (h->root.type != bfd_link_hash_defined
	  && h->root.type != bfd_link_hash_defweak)
	h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
      else
	{
	  if (h->root.u.def.section->owner != NULL
	      && (bfd_get_flavour (h->root.u.def.section->owner)
		  == bfd_target_elf_flavour))
	    h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
	  else
	    h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
	}

      if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
	  || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
	{
	  if (! _bfd_elf_link_record_dynamic_symbol (eif->info, h))
	    {
	      eif->failed = true;
	      return false;
	    }
	}
    }

  /* If this is a final link, and the symbol was defined as a common
     symbol in a regular object file, and there was no definition in
     any dynamic object, then the linker will have allocated space for
     the symbol in a common section but the ELF_LINK_HASH_DEF_REGULAR
     flag will not have been set.  */
  if (h->root.type == bfd_link_hash_defined
      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
      && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0
      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
      && (h->root.u.def.section->owner->flags & DYNAMIC) == 0)
    h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;

  /* If -Bsymbolic was used (which means to bind references to global
     symbols to the definition within the shared object), and this
     symbol was defined in a regular object, then it actually doesn't
     need a PLT entry.  */
  if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
      && eif->info->shared
      && eif->info->symbolic
      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
    h->elf_link_hash_flags &=~ ELF_LINK_HASH_NEEDS_PLT;

  /* If this symbol does not require a PLT entry, and it is not
     defined by a dynamic object, or is not referenced by a regular
     object, ignore it.  We do have to handle a weak defined symbol,
     even if no regular object refers to it, if we decided to add it
     to the dynamic symbol table.  FIXME: Do we normally need to worry
     about symbols which are defined by one dynamic object and
     referenced by another one?  */
  if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0
      && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
	  || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
	  || ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
	      && (h->weakdef == NULL || h->weakdef->dynindx == -1))))
    return true;

  /* If we've already adjusted this symbol, don't do it again.  This
     can happen via a recursive call.  */
  if ((h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
    return true;

  /* Don't look at this symbol again.  Note that we must set this
     after checking the above conditions, because we may look at a
     symbol once, decide not to do anything, and then get called
     recursively later after REF_REGULAR is set below.  */
  h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED;

  /* If this is a weak definition, and we know a real definition, and
     the real symbol is not itself defined by a regular object file,
     then get a good value for the real definition.  We handle the
     real symbol first, for the convenience of the backend routine.

     Note that there is a confusing case here.  If the real definition
     is defined by a regular object file, we don't get the real symbol
     from the dynamic object, but we do get the weak symbol.  If the
     processor backend uses a COPY reloc, then if some routine in the
     dynamic object changes the real symbol, we will not see that
     change in the corresponding weak symbol.  This is the way other
     ELF linkers work as well, and seems to be a result of the shared
     library model.

     I will clarify this issue.  Most SVR4 shared libraries define the
     variable _timezone and define timezone as a weak synonym.  The
     tzset call changes _timezone.  If you write
       extern int timezone;
       int _timezone = 5;
       int main () { tzset (); printf ("%d %d\n", timezone, _timezone); }
     you might expect that, since timezone is a synonym for _timezone,
     the same number will print both times.  However, if the processor
     backend uses a COPY reloc, then actually timezone will be copied
     into your process image, and, since you define _timezone
     yourself, _timezone will not.  Thus timezone and _timezone will
     wind up at different memory locations.  The tzset call will set
     _timezone, leaving timezone unchanged.  */

  if (h->weakdef != NULL)
    {
      struct elf_link_hash_entry *weakdef;

      BFD_ASSERT (h->root.type == bfd_link_hash_defined
		  || h->root.type == bfd_link_hash_defweak);
      weakdef = h->weakdef;
      BFD_ASSERT (weakdef->root.type == bfd_link_hash_defined
		  || weakdef->root.type == bfd_link_hash_defweak);
      BFD_ASSERT (weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC);
      if ((weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
	{
	  /* This symbol is defined by a regular object file, so we
	     will not do anything special.  Clear weakdef for the
	     convenience of the processor backend.  */
	  h->weakdef = NULL;
	}
      else
	{
	  /* There is an implicit reference by a regular object file
	     via the weak symbol.  */
	  weakdef->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
	  if (! elf_adjust_dynamic_symbol (weakdef, (PTR) eif))
	    return false;
	}
    }

  dynobj = elf_hash_table (eif->info)->dynobj;
  bed = get_elf_backend_data (dynobj);
  if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h))
    {
      eif->failed = true;
      return false;
    }

  return true;
}

/* Final phase of ELF linker.  */

/* A structure we use to avoid passing large numbers of arguments.  */

struct elf_final_link_info
{
  /* General link information.  */
  struct bfd_link_info *info;
  /* Output BFD.  */
  bfd *output_bfd;
  /* Symbol string table.  */
  struct bfd_strtab_hash *symstrtab;
  /* .dynsym section.  */
  asection *dynsym_sec;
  /* .hash section.  */
  asection *hash_sec;
  /* Buffer large enough to hold contents of any section.  */
  bfd_byte *contents;
  /* Buffer large enough to hold external relocs of any section.  */
  PTR external_relocs;
  /* Buffer large enough to hold internal relocs of any section.  */
  Elf_Internal_Rela *internal_relocs;
  /* Buffer large enough to hold external local symbols of any input
     BFD.  */
  Elf_External_Sym *external_syms;
  /* Buffer large enough to hold internal local symbols of any input
     BFD.  */
  Elf_Internal_Sym *internal_syms;
  /* Array large enough to hold a symbol index for each local symbol
     of any input BFD.  */
  long *indices;
  /* Array large enough to hold a section pointer for each local
     symbol of any input BFD.  */
  asection **sections;
  /* Buffer to hold swapped out symbols.  */
  Elf_External_Sym *symbuf;
  /* Number of swapped out symbols in buffer.  */
  size_t symbuf_count;
  /* Number of symbols which fit in symbuf.  */
  size_t symbuf_size;
};

static boolean elf_link_output_sym
  PARAMS ((struct elf_final_link_info *, const char *,
	   Elf_Internal_Sym *, asection *));
static boolean elf_link_flush_output_syms
  PARAMS ((struct elf_final_link_info *));
static boolean elf_link_output_extsym
  PARAMS ((struct elf_link_hash_entry *, PTR));
static boolean elf_link_input_bfd
  PARAMS ((struct elf_final_link_info *, bfd *));
static boolean elf_reloc_link_order
  PARAMS ((bfd *, struct bfd_link_info *, asection *,
	   struct bfd_link_order *));

/* This struct is used to pass information to routines called via
   elf_link_hash_traverse which must return failure.  */

struct elf_finfo_failed
{
  boolean failed;
  struct elf_final_link_info *finfo;
};  

/* Do the final step of an ELF link.  */

boolean
elf_bfd_final_link (abfd, info)
     bfd *abfd;
     struct bfd_link_info *info;
{
  boolean dynamic;
  bfd *dynobj;
  struct elf_final_link_info finfo;
  register asection *o;
  register struct bfd_link_order *p;
  register bfd *sub;
  size_t max_contents_size;
  size_t max_external_reloc_size;
  size_t max_internal_reloc_count;
  size_t max_sym_count;
  file_ptr off;
  Elf_Internal_Sym elfsym;
  unsigned int i;
  Elf_Internal_Shdr *symtab_hdr;
  Elf_Internal_Shdr *symstrtab_hdr;
  struct elf_backend_data *bed = get_elf_backend_data (abfd);
  struct elf_finfo_failed eif;

  if (info->shared)
    abfd->flags |= DYNAMIC;

  dynamic = elf_hash_table (info)->dynamic_sections_created;
  dynobj = elf_hash_table (info)->dynobj;

  finfo.info = info;
  finfo.output_bfd = abfd;
  finfo.symstrtab = elf_stringtab_init ();
  if (finfo.symstrtab == NULL)
    return false;
  if (! dynamic)
    {
      finfo.dynsym_sec = NULL;
      finfo.hash_sec = NULL;
    }
  else
    {
      finfo.dynsym_sec = bfd_get_section_by_name (dynobj, ".dynsym");
      finfo.hash_sec = bfd_get_section_by_name (dynobj, ".hash");
      BFD_ASSERT (finfo.dynsym_sec != NULL && finfo.hash_sec != NULL);
    }
  finfo.contents = NULL;
  finfo.external_relocs = NULL;
  finfo.internal_relocs = NULL;
  finfo.external_syms = NULL;
  finfo.internal_syms = NULL;
  finfo.indices = NULL;
  finfo.sections = NULL;
  finfo.symbuf = NULL;
  finfo.symbuf_count = 0;

  /* Count up the number of relocations we will output for each output
     section, so that we know the sizes of the reloc sections.  We
     also figure out some maximum sizes.  */
  max_contents_size = 0;
  max_external_reloc_size = 0;
  max_internal_reloc_count = 0;
  max_sym_count = 0;
  for (o = abfd->sections; o != (asection *) NULL; o = o->next)
    {
      o->reloc_count = 0;

      for (p = o->link_order_head; p != NULL; p = p->next)
	{
	  if (p->type == bfd_section_reloc_link_order
	      || p->type == bfd_symbol_reloc_link_order)
	    ++o->reloc_count;
	  else if (p->type == bfd_indirect_link_order)
	    {
	      asection *sec;

	      sec = p->u.indirect.section;

	      /* Mark all sections which are to be included in the
		 link.  This will normally be every section.  We need
		 to do this so that we can identify any sections which
		 the linker has decided to not include.  */
	      sec->linker_mark = true;

	      if (info->relocateable)
		o->reloc_count += sec->reloc_count;

	      if (sec->_raw_size > max_contents_size)
		max_contents_size = sec->_raw_size;
	      if (sec->_cooked_size > max_contents_size)
		max_contents_size = sec->_cooked_size;

	      /* We are interested in just local symbols, not all
		 symbols.  */
	      if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour)
		{
		  size_t sym_count;

		  if (elf_bad_symtab (sec->owner))
		    sym_count = (elf_tdata (sec->owner)->symtab_hdr.sh_size
				 / sizeof (Elf_External_Sym));
		  else
		    sym_count = elf_tdata (sec->owner)->symtab_hdr.sh_info;

		  if (sym_count > max_sym_count)
		    max_sym_count = sym_count;

		  if ((sec->flags & SEC_RELOC) != 0)
		    {
		      size_t ext_size;

		      ext_size = elf_section_data (sec)->rel_hdr.sh_size;
		      if (ext_size > max_external_reloc_size)
			max_external_reloc_size = ext_size;
		      if (sec->reloc_count > max_internal_reloc_count)
			max_internal_reloc_count = sec->reloc_count;
		    }
		}
	    }
	}

      if (o->reloc_count > 0)
	o->flags |= SEC_RELOC;
      else
	{
	  /* Explicitly clear the SEC_RELOC flag.  The linker tends to
	     set it (this is probably a bug) and if it is set
	     assign_section_numbers will create a reloc section.  */
	  o->flags &=~ SEC_RELOC;
	}

      /* If the SEC_ALLOC flag is not set, force the section VMA to
	 zero.  This is done in elf_fake_sections as well, but forcing
	 the VMA to 0 here will ensure that relocs against these
	 sections are handled correctly.  */
      if ((o->flags & SEC_ALLOC) == 0
	  && ! o->user_set_vma)
	o->vma = 0;
    }

  /* Figure out the file positions for everything but the symbol table
     and the relocs.  We set symcount to force assign_section_numbers
     to create a symbol table.  */
  abfd->symcount = info->strip == strip_all ? 0 : 1;
  BFD_ASSERT (! abfd->output_has_begun);
  if (! _bfd_elf_compute_section_file_positions (abfd, info))
    goto error_return;

  /* That created the reloc sections.  Set their sizes, and assign
     them file positions, and allocate some buffers.  */
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      if ((o->flags & SEC_RELOC) != 0)
	{
	  Elf_Internal_Shdr *rel_hdr;
	  register struct elf_link_hash_entry **p, **pend;

	  rel_hdr = &elf_section_data (o)->rel_hdr;

	  rel_hdr->sh_size = rel_hdr->sh_entsize * o->reloc_count;

	  /* The contents field must last into write_object_contents,
	     so we allocate it with bfd_alloc rather than malloc.  */
	  rel_hdr->contents = (PTR) bfd_alloc (abfd, rel_hdr->sh_size);
	  if (rel_hdr->contents == NULL && rel_hdr->sh_size != 0)
	    goto error_return;

	  p = ((struct elf_link_hash_entry **)
	       bfd_malloc (o->reloc_count
			   * sizeof (struct elf_link_hash_entry *)));
	  if (p == NULL && o->reloc_count != 0)
	    goto error_return;
	  elf_section_data (o)->rel_hashes = p;
	  pend = p + o->reloc_count;
	  for (; p < pend; p++)
	    *p = NULL;

	  /* Use the reloc_count field as an index when outputting the
	     relocs.  */
	  o->reloc_count = 0;
	}
    }

  _bfd_elf_assign_file_positions_for_relocs (abfd);

  /* We have now assigned file positions for all the sections except
     .symtab and .strtab.  We start the .symtab section at the current
     file position, and write directly to it.  We build the .strtab
     section in memory.  */
  abfd->symcount = 0;
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  /* sh_name is set in prep_headers.  */
  symtab_hdr->sh_type = SHT_SYMTAB;
  symtab_hdr->sh_flags = 0;
  symtab_hdr->sh_addr = 0;
  symtab_hdr->sh_size = 0;
  symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
  /* sh_link is set in assign_section_numbers.  */
  /* sh_info is set below.  */
  /* sh_offset is set just below.  */
  symtab_hdr->sh_addralign = 4;  /* FIXME: system dependent?  */

  off = elf_tdata (abfd)->next_file_pos;
  off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, true);

  /* Note that at this point elf_tdata (abfd)->next_file_pos is
     incorrect.  We do not yet know the size of the .symtab section.
     We correct next_file_pos below, after we do know the size.  */

  /* Allocate a buffer to hold swapped out symbols.  This is to avoid
     continuously seeking to the right position in the file.  */
  if (! info->keep_memory || max_sym_count < 20)
    finfo.symbuf_size = 20;
  else
    finfo.symbuf_size = max_sym_count;
  finfo.symbuf = ((Elf_External_Sym *)
		  bfd_malloc (finfo.symbuf_size * sizeof (Elf_External_Sym)));
  if (finfo.symbuf == NULL)
    goto error_return;

  /* Start writing out the symbol table.  The first symbol is always a
     dummy symbol.  */
  if (info->strip != strip_all || info->relocateable)
    {
      elfsym.st_value = 0;
      elfsym.st_size = 0;
      elfsym.st_info = 0;
      elfsym.st_other = 0;
      elfsym.st_shndx = SHN_UNDEF;
      if (! elf_link_output_sym (&finfo, (const char *) NULL,
				 &elfsym, bfd_und_section_ptr))
	goto error_return;
    }

#if 0
  /* Some standard ELF linkers do this, but we don't because it causes
     bootstrap comparison failures.  */
  /* Output a file symbol for the output file as the second symbol.
     We output this even if we are discarding local symbols, although
     I'm not sure if this is correct.  */
  elfsym.st_value = 0;
  elfsym.st_size = 0;
  elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
  elfsym.st_other = 0;
  elfsym.st_shndx = SHN_ABS;
  if (! elf_link_output_sym (&finfo, bfd_get_filename (abfd),
			     &elfsym, bfd_abs_section_ptr))
    goto error_return;
#endif

  /* Output a symbol for each section.  We output these even if we are
     discarding local symbols, since they are used for relocs.  These
     symbols have no names.  We store the index of each one in the
     index field of the section, so that we can find it again when
     outputting relocs.  */
  if (info->strip != strip_all || info->relocateable)
    {
      elfsym.st_value = 0;
      elfsym.st_size = 0;
      elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
      elfsym.st_other = 0;
      for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
	{
	  o = section_from_elf_index (abfd, i);
	  if (o != NULL)
	    o->target_index = abfd->symcount;
	  elfsym.st_shndx = i;
	  if (! elf_link_output_sym (&finfo, (const char *) NULL,
				     &elfsym, o))
	    goto error_return;
	}
    }

  /* Allocate some memory to hold information read in from the input
     files.  */
  finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size);
  finfo.external_relocs = (PTR) bfd_malloc (max_external_reloc_size);
  finfo.internal_relocs = ((Elf_Internal_Rela *)
			   bfd_malloc (max_internal_reloc_count
				       * sizeof (Elf_Internal_Rela)));
  finfo.external_syms = ((Elf_External_Sym *)
			 bfd_malloc (max_sym_count
				     * sizeof (Elf_External_Sym)));
  finfo.internal_syms = ((Elf_Internal_Sym *)
			 bfd_malloc (max_sym_count
				     * sizeof (Elf_Internal_Sym)));
  finfo.indices = (long *) bfd_malloc (max_sym_count * sizeof (long));
  finfo.sections = ((asection **)
		    bfd_malloc (max_sym_count * sizeof (asection *)));
  if ((finfo.contents == NULL && max_contents_size != 0)
      || (finfo.external_relocs == NULL && max_external_reloc_size != 0)
      || (finfo.internal_relocs == NULL && max_internal_reloc_count != 0)
      || (finfo.external_syms == NULL && max_sym_count != 0)
      || (finfo.internal_syms == NULL && max_sym_count != 0)
      || (finfo.indices == NULL && max_sym_count != 0)
      || (finfo.sections == NULL && max_sym_count != 0))
    goto error_return;

  /* Since ELF permits relocations to be against local symbols, we
     must have the local symbols available when we do the relocations.
     Since we would rather only read the local symbols once, and we
     would rather not keep them in memory, we handle all the
     relocations for a single input file at the same time.

     Unfortunately, there is no way to know the total number of local
     symbols until we have seen all of them, and the local symbol
     indices precede the global symbol indices.  This means that when
     we are generating relocateable output, and we see a reloc against
     a global symbol, we can not know the symbol index until we have
     finished examining all the local symbols to see which ones we are
     going to output.  To deal with this, we keep the relocations in
     memory, and don't output them until the end of the link.  This is
     an unfortunate waste of memory, but I don't see a good way around
     it.  Fortunately, it only happens when performing a relocateable
     link, which is not the common case.  FIXME: If keep_memory is set
     we could write the relocs out and then read them again; I don't
     know how bad the memory loss will be.  */

  for (sub = info->input_bfds; sub != NULL; sub = sub->next)
    sub->output_has_begun = false;
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      for (p = o->link_order_head; p != NULL; p = p->next)
	{
	  if (p->type == bfd_indirect_link_order
	      && (bfd_get_flavour (p->u.indirect.section->owner)
		  == bfd_target_elf_flavour))
	    {
	      sub = p->u.indirect.section->owner;
	      if (! sub->output_has_begun)
		{
		  if (! elf_link_input_bfd (&finfo, sub))
		    goto error_return;
		  sub->output_has_begun = true;
		}
	    }
	  else if (p->type == bfd_section_reloc_link_order
		   || p->type == bfd_symbol_reloc_link_order)
	    {
	      if (! elf_reloc_link_order (abfd, info, o, p))
		goto error_return;
	    }
	  else
	    {
	      if (! _bfd_default_link_order (abfd, info, o, p))
		goto error_return;
	    }
	}
    }

  /* That wrote out all the local symbols.  Finish up the symbol table
     with the global symbols.  */

  /* The sh_info field records the index of the first non local
     symbol.  */
  symtab_hdr->sh_info = abfd->symcount;
  if (dynamic)
    elf_section_data (finfo.dynsym_sec->output_section)->this_hdr.sh_info = 1;

  /* We get the global symbols from the hash table.  */
  eif.failed = false;
  eif.finfo = &finfo;
  elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
			  (PTR) &eif);
  if (eif.failed)
    return false;

  /* Flush all symbols to the file.  */
  if (! elf_link_flush_output_syms (&finfo))
    return false;

  /* Now we know the size of the symtab section.  */
  off += symtab_hdr->sh_size;

  /* Finish up and write out the symbol string table (.strtab)
     section.  */
  symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
  /* sh_name was set in prep_headers.  */
  symstrtab_hdr->sh_type = SHT_STRTAB;
  symstrtab_hdr->sh_flags = 0;
  symstrtab_hdr->sh_addr = 0;
  symstrtab_hdr->sh_size = _bfd_stringtab_size (finfo.symstrtab);
  symstrtab_hdr->sh_entsize = 0;
  symstrtab_hdr->sh_link = 0;
  symstrtab_hdr->sh_info = 0;
  /* sh_offset is set just below.  */
  symstrtab_hdr->sh_addralign = 1;

  off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, true);
  elf_tdata (abfd)->next_file_pos = off;

  if (abfd->symcount > 0)
    {
      if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
	  || ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
	return false;
    }

  /* Adjust the relocs to have the correct symbol indices.  */
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      struct elf_link_hash_entry **rel_hash;
      Elf_Internal_Shdr *rel_hdr;

      if ((o->flags & SEC_RELOC) == 0)
	continue;

      rel_hash = elf_section_data (o)->rel_hashes;
      rel_hdr = &elf_section_data (o)->rel_hdr;
      for (i = 0; i < o->reloc_count; i++, rel_hash++)
	{
	  if (*rel_hash == NULL)
	    continue;
	      
	  BFD_ASSERT ((*rel_hash)->indx >= 0);

	  if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
	    {
	      Elf_External_Rel *erel;
	      Elf_Internal_Rel irel;

	      erel = (Elf_External_Rel *) rel_hdr->contents + i;
	      elf_swap_reloc_in (abfd, erel, &irel);
	      irel.r_info = ELF_R_INFO ((*rel_hash)->indx,
					ELF_R_TYPE (irel.r_info));
	      elf_swap_reloc_out (abfd, &irel, erel);
	    }
	  else
	    {
	      Elf_External_Rela *erela;
	      Elf_Internal_Rela irela;

	      BFD_ASSERT (rel_hdr->sh_entsize
			  == sizeof (Elf_External_Rela));

	      erela = (Elf_External_Rela *) rel_hdr->contents + i;
	      elf_swap_reloca_in (abfd, erela, &irela);
	      irela.r_info = ELF_R_INFO ((*rel_hash)->indx,
					 ELF_R_TYPE (irela.r_info));
	      elf_swap_reloca_out (abfd, &irela, erela);
	    }
	}

      /* Set the reloc_count field to 0 to prevent write_relocs from
	 trying to swap the relocs out itself.  */
      o->reloc_count = 0;
    }

  /* If we are linking against a dynamic object, or generating a
     shared library, finish up the dynamic linking information.  */
  if (dynamic)
    {
      Elf_External_Dyn *dyncon, *dynconend;

      /* Fix up .dynamic entries.  */
      o = bfd_get_section_by_name (dynobj, ".dynamic");
      BFD_ASSERT (o != NULL);

      dyncon = (Elf_External_Dyn *) o->contents;
      dynconend = (Elf_External_Dyn *) (o->contents + o->_raw_size);
      for (; dyncon < dynconend; dyncon++)
	{
	  Elf_Internal_Dyn dyn;
	  const char *name;
	  unsigned int type;

	  elf_swap_dyn_in (dynobj, dyncon, &dyn);

	  switch (dyn.d_tag)
	    {
	    default:
	      break;

	      /* SVR4 linkers seem to set DT_INIT and DT_FINI based on
                 magic _init and _fini symbols.  This is pretty ugly,
                 but we are compatible.  */
	    case DT_INIT:
	      name = "_init";
	      goto get_sym;
	    case DT_FINI:
	      name = "_fini";
	    get_sym:
	      {
		struct elf_link_hash_entry *h;

		h = elf_link_hash_lookup (elf_hash_table (info), name,
					  false, false, true);
		if (h != NULL
		    && (h->root.type == bfd_link_hash_defined
			|| h->root.type == bfd_link_hash_defweak))
		  {
		    dyn.d_un.d_val = h->root.u.def.value;
		    o = h->root.u.def.section;
		    if (o->output_section != NULL)
		      dyn.d_un.d_val += (o->output_section->vma
					 + o->output_offset);
		    else
		      {
			/* The symbol is imported from another shared
			   library and does not apply to this one.  */
			dyn.d_un.d_val = 0;
		      }

		    elf_swap_dyn_out (dynobj, &dyn, dyncon);
		  }
	      }
	      break;

	    case DT_HASH:
	      name = ".hash";
	      goto get_vma;
	    case DT_STRTAB:
	      name = ".dynstr";
	      goto get_vma;
	    case DT_SYMTAB:
	      name = ".dynsym";
	    get_vma:
	      o = bfd_get_section_by_name (abfd, name);
	      BFD_ASSERT (o != NULL);
	      dyn.d_un.d_ptr = o->vma;
	      elf_swap_dyn_out (dynobj, &dyn, dyncon);
	      break;

	    case DT_REL:
	    case DT_RELA:
	    case DT_RELSZ:
	    case DT_RELASZ:
	      if (dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
		type = SHT_REL;
	      else
		type = SHT_RELA;
	      dyn.d_un.d_val = 0;
	      for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
		{
		  Elf_Internal_Shdr *hdr;

		  hdr = elf_elfsections (abfd)[i];
		  if (hdr->sh_type == type
		      && (hdr->sh_flags & SHF_ALLOC) != 0)
		    {
		      if (dyn.d_tag == DT_RELSZ || dyn.d_tag == DT_RELASZ)
			dyn.d_un.d_val += hdr->sh_size;
		      else
			{
			  if (dyn.d_un.d_val == 0
			      || hdr->sh_addr < dyn.d_un.d_val)
			    dyn.d_un.d_val = hdr->sh_addr;
			}
		    }
		}
	      elf_swap_dyn_out (dynobj, &dyn, dyncon);
	      break;
	    }
	}
    }

  /* If we have created any dynamic sections, then output them.  */
  if (dynobj != NULL)
    {
      if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info))
	goto error_return;

      for (o = dynobj->sections; o != NULL; o = o->next)
	{
	  if ((o->flags & SEC_HAS_CONTENTS) == 0
	      || o->_raw_size == 0)
	    continue;
	  if ((o->flags & SEC_IN_MEMORY) == 0)
	    {
	      /* At this point, we are only interested in sections
                 created by elf_link_create_dynamic_sections.  FIXME:
                 This test is fragile.  */
	      continue;
	    }
	  if ((elf_section_data (o->output_section)->this_hdr.sh_type
	       != SHT_STRTAB)
	      || strcmp (bfd_get_section_name (abfd, o), ".dynstr") != 0)
	    {
	      if (! bfd_set_section_contents (abfd, o->output_section,
					      o->contents, o->output_offset,
					      o->_raw_size))
		goto error_return;
	    }
	  else
	    {
	      file_ptr off;

	      /* The contents of the .dynstr section are actually in a
                 stringtab.  */
	      off = elf_section_data (o->output_section)->this_hdr.sh_offset;
	      if (bfd_seek (abfd, off, SEEK_SET) != 0
		  || ! _bfd_stringtab_emit (abfd,
					    elf_hash_table (info)->dynstr))
		goto error_return;
	    }
	}
    }

  /* If we have optimized stabs strings, output them.  */
  if (elf_hash_table (info)->stab_info != NULL)
    {
      if (! _bfd_write_stab_strings (abfd, &elf_hash_table (info)->stab_info))
	goto error_return;
    }

  if (finfo.symstrtab != NULL)
    _bfd_stringtab_free (finfo.symstrtab);
  if (finfo.contents != NULL)
    free (finfo.contents);
  if (finfo.external_relocs != NULL)
    free (finfo.external_relocs);
  if (finfo.internal_relocs != NULL)
    free (finfo.internal_relocs);
  if (finfo.external_syms != NULL)
    free (finfo.external_syms);
  if (finfo.internal_syms != NULL)
    free (finfo.internal_syms);
  if (finfo.indices != NULL)
    free (finfo.indices);
  if (finfo.sections != NULL)
    free (finfo.sections);
  if (finfo.symbuf != NULL)
    free (finfo.symbuf);
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      if ((o->flags & SEC_RELOC) != 0
	  && elf_section_data (o)->rel_hashes != NULL)
	free (elf_section_data (o)->rel_hashes);
    }

  elf_tdata (abfd)->linker = true;

  return true;

 error_return:
  if (finfo.symstrtab != NULL)
    _bfd_stringtab_free (finfo.symstrtab);
  if (finfo.contents != NULL)
    free (finfo.contents);
  if (finfo.external_relocs != NULL)
    free (finfo.external_relocs);
  if (finfo.internal_relocs != NULL)
    free (finfo.internal_relocs);
  if (finfo.external_syms != NULL)
    free (finfo.external_syms);
  if (finfo.internal_syms != NULL)
    free (finfo.internal_syms);
  if (finfo.indices != NULL)
    free (finfo.indices);
  if (finfo.sections != NULL)
    free (finfo.sections);
  if (finfo.symbuf != NULL)
    free (finfo.symbuf);
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      if ((o->flags & SEC_RELOC) != 0
	  && elf_section_data (o)->rel_hashes != NULL)
	free (elf_section_data (o)->rel_hashes);
    }

  return false;
}

/* Add a symbol to the output symbol table.  */

static boolean
elf_link_output_sym (finfo, name, elfsym, input_sec)
     struct elf_final_link_info *finfo;
     const char *name;
     Elf_Internal_Sym *elfsym;
     asection *input_sec;
{
  boolean (*output_symbol_hook) PARAMS ((bfd *,
					 struct bfd_link_info *info,
					 const char *,
					 Elf_Internal_Sym *,
					 asection *));

  output_symbol_hook = get_elf_backend_data (finfo->output_bfd)->
    elf_backend_link_output_symbol_hook;
  if (output_symbol_hook != NULL)
    {
      if (! ((*output_symbol_hook)
	     (finfo->output_bfd, finfo->info, name, elfsym, input_sec)))
	return false;
    }

  if (name == (const char *) NULL || *name == '\0')
    elfsym->st_name = 0;
  else
    {
      elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab,
							    name, true,
							    false);
      if (elfsym->st_name == (unsigned long) -1)
	return false;
    }

  if (finfo->symbuf_count >= finfo->symbuf_size)
    {
      if (! elf_link_flush_output_syms (finfo))
	return false;
    }

  elf_swap_symbol_out (finfo->output_bfd, elfsym,
		       (PTR) (finfo->symbuf + finfo->symbuf_count));
  ++finfo->symbuf_count;

  ++finfo->output_bfd->symcount;

  return true;
}

/* Flush the output symbols to the file.  */

static boolean
elf_link_flush_output_syms (finfo)
     struct elf_final_link_info *finfo;
{
  if (finfo->symbuf_count > 0)
    {
      Elf_Internal_Shdr *symtab;

      symtab = &elf_tdata (finfo->output_bfd)->symtab_hdr;

      if (bfd_seek (finfo->output_bfd, symtab->sh_offset + symtab->sh_size,
		    SEEK_SET) != 0
	  || (bfd_write ((PTR) finfo->symbuf, finfo->symbuf_count,
			 sizeof (Elf_External_Sym), finfo->output_bfd)
	      != finfo->symbuf_count * sizeof (Elf_External_Sym)))
	return false;

      symtab->sh_size += finfo->symbuf_count * sizeof (Elf_External_Sym);

      finfo->symbuf_count = 0;
    }

  return true;
}

/* Add an external symbol to the symbol table.  This is called from
   the hash table traversal routine.  */

static boolean
elf_link_output_extsym (h, data)
     struct elf_link_hash_entry *h;
     PTR data;
{
  struct elf_finfo_failed *eif = (struct elf_finfo_failed *) data;
  struct elf_final_link_info *finfo = eif->finfo;
  boolean strip;
  Elf_Internal_Sym sym;
  asection *input_sec;

  /* If we are not creating a shared library, and this symbol is
     referenced by a shared library but is not defined anywhere, then
     warn that it is undefined.  If we do not do this, the runtime
     linker will complain that the symbol is undefined when the
     program is run.  We don't have to worry about symbols that are
     referenced by regular files, because we will already have issued
     warnings for them.  */
  if (! finfo->info->relocateable
      && ! finfo->info->shared
      && h->root.type == bfd_link_hash_undefined
      && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
      && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
    {
      if (! ((*finfo->info->callbacks->undefined_symbol)
	     (finfo->info, h->root.root.string, h->root.u.undef.abfd,
	      (asection *) NULL, 0)))
	{
	  eif->failed = true;
	  return false;
	}
    }

  /* We don't want to output symbols that have never been mentioned by
     a regular file, or that we have been told to strip.  However, if
     h->indx is set to -2, the symbol is used by a reloc and we must
     output it.  */
  if (h->indx == -2)
    strip = false;
  else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
	    || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
	   && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
	   && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
    strip = true;
  else if (finfo->info->strip == strip_all
	   || (finfo->info->strip == strip_some
	       && bfd_hash_lookup (finfo->info->keep_hash,
				   h->root.root.string,
				   false, false) == NULL))
    strip = true;
  else
    strip = false;

  /* If we're stripping it, and it's not a dynamic symbol, there's
     nothing else to do.  */
  if (strip && h->dynindx == -1)
    return true;

  sym.st_value = 0;
  sym.st_size = h->size;
  sym.st_other = 0;
  if (h->root.type == bfd_link_hash_undefweak
      || h->root.type == bfd_link_hash_defweak)
    sym.st_info = ELF_ST_INFO (STB_WEAK, h->type);
  else
    sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type);

  switch (h->root.type)
    {
    default:
    case bfd_link_hash_new:
      abort ();
      return false;

    case bfd_link_hash_undefined:
      input_sec = bfd_und_section_ptr;
      sym.st_shndx = SHN_UNDEF;
      break;

    case bfd_link_hash_undefweak:
      input_sec = bfd_und_section_ptr;
      sym.st_shndx = SHN_UNDEF;
      break;

    case bfd_link_hash_defined:
    case bfd_link_hash_defweak:
      {
	input_sec = h->root.u.def.section;
	if (input_sec->output_section != NULL)
	  {
	    sym.st_shndx =
	      _bfd_elf_section_from_bfd_section (finfo->output_bfd,
						 input_sec->output_section);
	    if (sym.st_shndx == (unsigned short) -1)
	      {
		eif->failed = true;
		return false;
	      }

	    /* ELF symbols in relocateable files are section relative,
	       but in nonrelocateable files they are virtual
	       addresses.  */
	    sym.st_value = h->root.u.def.value + input_sec->output_offset;
	    if (! finfo->info->relocateable)
	      sym.st_value += input_sec->output_section->vma;
	  }
	else
	  {
	    BFD_ASSERT ((bfd_get_flavour (input_sec->owner)
			 == bfd_target_elf_flavour)
			&& elf_elfheader (input_sec->owner)->e_type == ET_DYN);
	    sym.st_shndx = SHN_UNDEF;
	    input_sec = bfd_und_section_ptr;
	  }
      }
      break;

    case bfd_link_hash_common:
      input_sec = bfd_com_section_ptr;
      sym.st_shndx = SHN_COMMON;
      sym.st_value = 1 << h->root.u.c.p->alignment_power;
      break;

    case bfd_link_hash_indirect:
    case bfd_link_hash_warning:
      /* We can't represent these symbols in ELF.  A warning symbol
         may have come from a .gnu.warning.SYMBOL section anyhow.  We
         just put the target symbol in the hash table.  If the target
         symbol does not really exist, don't do anything.  */
      if (h->root.u.i.link->type == bfd_link_hash_new)
	return true;
      return (elf_link_output_extsym
	      ((struct elf_link_hash_entry *) h->root.u.i.link, data));
    }

  /* If this symbol should be put in the .dynsym section, then put it
     there now.  We have already know the symbol index.  We also fill
     in the entry in the .hash section.  */
  if (h->dynindx != -1
      && elf_hash_table (finfo->info)->dynamic_sections_created)
    {
      struct elf_backend_data *bed;
      size_t bucketcount;
      size_t bucket;
      bfd_byte *bucketpos;
      bfd_vma chain;

      sym.st_name = h->dynstr_index;

      /* Give the processor backend a chance to tweak the symbol
	 value, and also to finish up anything that needs to be done
	 for this symbol.  */
      bed = get_elf_backend_data (finfo->output_bfd);
      if (! ((*bed->elf_backend_finish_dynamic_symbol)
	     (finfo->output_bfd, finfo->info, h, &sym)))
	{
	  eif->failed = true;
	  return false;
	}

      elf_swap_symbol_out (finfo->output_bfd, &sym,
			   (PTR) (((Elf_External_Sym *)
				   finfo->dynsym_sec->contents)
				  + h->dynindx));

      bucketcount = elf_hash_table (finfo->info)->bucketcount;
      bucket = (bfd_elf_hash ((const unsigned char *) h->root.root.string)
		% bucketcount);
      bucketpos = ((bfd_byte *) finfo->hash_sec->contents
		   + (bucket + 2) * (ARCH_SIZE / 8));
      chain = get_word (finfo->output_bfd, bucketpos);
      put_word (finfo->output_bfd, h->dynindx, bucketpos);
      put_word (finfo->output_bfd, chain,
		((bfd_byte *) finfo->hash_sec->contents
		 + (bucketcount + 2 + h->dynindx) * (ARCH_SIZE / 8)));
    }

  /* If we're stripping it, then it was just a dynamic symbol, and
     there's nothing else to do.  */
  if (strip)
    return true;

  h->indx = finfo->output_bfd->symcount;

  if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec))
    {
      eif->failed = true;
      return false;
    }

  return true;
}

/* Link an input file into the linker output file.  This function
   handles all the sections and relocations of the input file at once.
   This is so that we only have to read the local symbols once, and
   don't have to keep them in memory.  */

static boolean
elf_link_input_bfd (finfo, input_bfd)
     struct elf_final_link_info *finfo;
     bfd *input_bfd;
{
  boolean (*relocate_section) PARAMS ((bfd *, struct bfd_link_info *,
				       bfd *, asection *, bfd_byte *,
				       Elf_Internal_Rela *,
				       Elf_Internal_Sym *, asection **));
  bfd *output_bfd;
  Elf_Internal_Shdr *symtab_hdr;
  size_t locsymcount;
  size_t extsymoff;
  Elf_External_Sym *esym;
  Elf_External_Sym *esymend;
  Elf_Internal_Sym *isym;
  long *pindex;
  asection **ppsection;
  asection *o;

  output_bfd = finfo->output_bfd;
  relocate_section =
    get_elf_backend_data (output_bfd)->elf_backend_relocate_section;

  /* If this is a dynamic object, we don't want to do anything here:
     we don't want the local symbols, and we don't want the section
     contents.  */
  if (elf_elfheader (input_bfd)->e_type == ET_DYN)
    return true;

  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
  if (elf_bad_symtab (input_bfd))
    {
      locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym);
      extsymoff = 0;
    }
  else
    {
      locsymcount = symtab_hdr->sh_info;
      extsymoff = symtab_hdr->sh_info;
    }

  /* Read the local symbols.  */
  if (locsymcount > 0
      && (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
      	  || (bfd_read (finfo->external_syms, sizeof (Elf_External_Sym),
			locsymcount, input_bfd)
	      != locsymcount * sizeof (Elf_External_Sym))))
    return false;

  /* Swap in the local symbols and write out the ones which we know
     are going into the output file.  */
  esym = finfo->external_syms;
  esymend = esym + locsymcount;
  isym = finfo->internal_syms;
  pindex = finfo->indices;
  ppsection = finfo->sections;
  for (; esym < esymend; esym++, isym++, pindex++, ppsection++)
    {
      asection *isec;
      const char *name;
      Elf_Internal_Sym osym;

      elf_swap_symbol_in (input_bfd, esym, isym);
      *pindex = -1;

      if (elf_bad_symtab (input_bfd))
	{
	  if (ELF_ST_BIND (isym->st_info) != STB_LOCAL)
	    {
	      *ppsection = NULL;
	      continue;
	    }
	}

      if (isym->st_shndx == SHN_UNDEF)
	isec = bfd_und_section_ptr;
      else if (isym->st_shndx > 0 && isym->st_shndx < SHN_LORESERVE)
	isec = section_from_elf_index (input_bfd, isym->st_shndx);
      else if (isym->st_shndx == SHN_ABS)
	isec = bfd_abs_section_ptr;
      else if (isym->st_shndx == SHN_COMMON)
	isec = bfd_com_section_ptr;
      else
	{
	  /* Who knows?  */
	  isec = NULL;
	}

      *ppsection = isec;

      /* Don't output the first, undefined, symbol.  */
      if (esym == finfo->external_syms)
	continue;

      /* If we are stripping all symbols, we don't want to output this
	 one.  */
      if (finfo->info->strip == strip_all)
	continue;

      /* We never output section symbols.  Instead, we use the section
	 symbol of the corresponding section in the output file.  */
      if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
	continue;

      /* If we are discarding all local symbols, we don't want to
	 output this one.  If we are generating a relocateable output
	 file, then some of the local symbols may be required by
	 relocs; we output them below as we discover that they are
	 needed.  */
      if (finfo->info->discard == discard_all)
	continue;

      /* Get the name of the symbol.  */
      name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link,
					  isym->st_name);
      if (name == NULL)
	return false;

      /* See if we are discarding symbols with this name.  */
      if ((finfo->info->strip == strip_some
	   && (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
	       == NULL))
	  || (finfo->info->discard == discard_l
	      && strncmp (name, finfo->info->lprefix,
			  finfo->info->lprefix_len) == 0))
	continue;

      /* If we get here, we are going to output this symbol.  */

      osym = *isym;

      /* Adjust the section index for the output file.  */
      osym.st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
							 isec->output_section);
      if (osym.st_shndx == (unsigned short) -1)
	return false;

      *pindex = output_bfd->symcount;

      /* ELF symbols in relocateable files are section relative, but
	 in executable files they are virtual addresses.  Note that
	 this code assumes that all ELF sections have an associated
	 BFD section with a reasonable value for output_offset; below
	 we assume that they also have a reasonable value for
	 output_section.  Any special sections must be set up to meet
	 these requirements.  */
      osym.st_value += isec->output_offset;
      if (! finfo->info->relocateable)
	osym.st_value += isec->output_section->vma;

      if (! elf_link_output_sym (finfo, name, &osym, isec))
	return false;
    }

  /* Relocate the contents of each section.  */
  for (o = input_bfd->sections; o != NULL; o = o->next)
    {
      if (! o->linker_mark)
	{
	  /* This section was omitted from the link.  */
	  continue;
	}

      if ((o->flags & SEC_HAS_CONTENTS) == 0
	  || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0))
	continue;

      if ((o->flags & SEC_IN_MEMORY) != 0
	  && input_bfd == elf_hash_table (finfo->info)->dynobj)
	{
	  /* Section was created by elf_link_create_dynamic_sections.
             FIXME: This test is fragile.  */
	  continue;
	}

      /* Read the contents of the section.  */
      if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
				      (file_ptr) 0, o->_raw_size))
	return false;

      if ((o->flags & SEC_RELOC) != 0)
	{
	  Elf_Internal_Rela *internal_relocs;

	  /* Get the swapped relocs.  */
	  internal_relocs = elf_link_read_relocs (input_bfd, o,
						  finfo->external_relocs,
						  finfo->internal_relocs,
						  false);
	  if (internal_relocs == NULL
	      && o->reloc_count > 0)
	    return false;

	  /* Relocate the section by invoking a back end routine.

	     The back end routine is responsible for adjusting the
	     section contents as necessary, and (if using Rela relocs
	     and generating a relocateable output file) adjusting the
	     reloc addend as necessary.

	     The back end routine does not have to worry about setting
	     the reloc address or the reloc symbol index.

	     The back end routine is given a pointer to the swapped in
	     internal symbols, and can access the hash table entries
	     for the external symbols via elf_sym_hashes (input_bfd).

	     When generating relocateable output, the back end routine
	     must handle STB_LOCAL/STT_SECTION symbols specially.  The
	     output symbol is going to be a section symbol
	     corresponding to the output section, which will require
	     the addend to be adjusted.  */

	  if (! (*relocate_section) (output_bfd, finfo->info,
				     input_bfd, o,
				     finfo->contents,
				     internal_relocs,
				     finfo->internal_syms,
				     finfo->sections))
	    return false;

	  if (finfo->info->relocateable)
	    {
	      Elf_Internal_Rela *irela;
	      Elf_Internal_Rela *irelaend;
	      struct elf_link_hash_entry **rel_hash;
	      Elf_Internal_Shdr *input_rel_hdr;
	      Elf_Internal_Shdr *output_rel_hdr;

	      /* Adjust the reloc addresses and symbol indices.  */

	      irela = internal_relocs;
	      irelaend = irela + o->reloc_count;
	      rel_hash = (elf_section_data (o->output_section)->rel_hashes
			  + o->output_section->reloc_count);
	      for (; irela < irelaend; irela++, rel_hash++)
		{
		  unsigned long r_symndx;
		  Elf_Internal_Sym *isym;
		  asection *sec;

		  irela->r_offset += o->output_offset;

		  r_symndx = ELF_R_SYM (irela->r_info);

		  if (r_symndx == 0)
		    continue;

		  if (r_symndx >= locsymcount
		      || (elf_bad_symtab (input_bfd)
			  && finfo->sections[r_symndx] == NULL))
		    {
		      long indx;

		      /* This is a reloc against a global symbol.  We
			 have not yet output all the local symbols, so
			 we do not know the symbol index of any global
			 symbol.  We set the rel_hash entry for this
			 reloc to point to the global hash table entry
			 for this symbol.  The symbol index is then
			 set at the end of elf_bfd_final_link.  */
		      indx = r_symndx - extsymoff;
		      *rel_hash = elf_sym_hashes (input_bfd)[indx];

		      /* Setting the index to -2 tells
			 elf_link_output_extsym that this symbol is
			 used by a reloc.  */
		      BFD_ASSERT ((*rel_hash)->indx < 0);
		      (*rel_hash)->indx = -2;

		      continue;
		    }

		  /* This is a reloc against a local symbol. */

		  *rel_hash = NULL;
		  isym = finfo->internal_syms + r_symndx;
		  sec = finfo->sections[r_symndx];
		  if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
		    {
		      /* I suppose the backend ought to fill in the
			 section of any STT_SECTION symbol against a
			 processor specific section.  */
		      if (sec != NULL && bfd_is_abs_section (sec))
			r_symndx = 0;
		      else if (sec == NULL || sec->owner == NULL)
			{
			  bfd_set_error (bfd_error_bad_value);
			  return false;
			}
		      else
			{
			  r_symndx = sec->output_section->target_index;
			  BFD_ASSERT (r_symndx != 0);
			}
		    }
		  else
		    {
		      if (finfo->indices[r_symndx] == -1)
			{
			  unsigned long link;
			  const char *name;
			  asection *osec;

			  if (finfo->info->strip == strip_all)
			    {
			      /* You can't do ld -r -s.  */
			      bfd_set_error (bfd_error_invalid_operation);
			      return false;
			    }

			  /* This symbol was skipped earlier, but
			     since it is needed by a reloc, we
			     must output it now.  */
			  link = symtab_hdr->sh_link;
			  name = bfd_elf_string_from_elf_section (input_bfd,
								  link,
								  isym->st_name);
			  if (name == NULL)
			    return false;

			  osec = sec->output_section;
			  isym->st_shndx =
			    _bfd_elf_section_from_bfd_section (output_bfd,
							       osec);
			  if (isym->st_shndx == (unsigned short) -1)
			    return false;

			  isym->st_value += sec->output_offset;
			  if (! finfo->info->relocateable)
			    isym->st_value += osec->vma;

			  finfo->indices[r_symndx] = output_bfd->symcount;

			  if (! elf_link_output_sym (finfo, name, isym, sec))
			    return false;
			}

		      r_symndx = finfo->indices[r_symndx];
		    }

		  irela->r_info = ELF_R_INFO (r_symndx,
					      ELF_R_TYPE (irela->r_info));
		}

	      /* Swap out the relocs.  */
	      input_rel_hdr = &elf_section_data (o)->rel_hdr;
	      output_rel_hdr = &elf_section_data (o->output_section)->rel_hdr;
	      BFD_ASSERT (output_rel_hdr->sh_entsize
			  == input_rel_hdr->sh_entsize);
	      irela = internal_relocs;
	      irelaend = irela + o->reloc_count;
	      if (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
		{
		  Elf_External_Rel *erel;

		  erel = ((Elf_External_Rel *) output_rel_hdr->contents
			  + o->output_section->reloc_count);
		  for (; irela < irelaend; irela++, erel++)
		    {
		      Elf_Internal_Rel irel;

		      irel.r_offset = irela->r_offset;
		      irel.r_info = irela->r_info;
		      BFD_ASSERT (irela->r_addend == 0);
		      elf_swap_reloc_out (output_bfd, &irel, erel);
		    }
		}
	      else
		{
		  Elf_External_Rela *erela;

		  BFD_ASSERT (input_rel_hdr->sh_entsize
			      == sizeof (Elf_External_Rela));
		  erela = ((Elf_External_Rela *) output_rel_hdr->contents
			   + o->output_section->reloc_count);
		  for (; irela < irelaend; irela++, erela++)
		    elf_swap_reloca_out (output_bfd, irela, erela);
		}

	      o->output_section->reloc_count += o->reloc_count;
	    }
	}

      /* Write out the modified section contents.  */
      if (elf_section_data (o)->stab_info == NULL)
	{
	  if (! bfd_set_section_contents (output_bfd, o->output_section,
					  finfo->contents, o->output_offset,
					  (o->_cooked_size != 0
					   ? o->_cooked_size
					   : o->_raw_size)))
	    return false;
	}
      else
	{
	  if (! _bfd_write_section_stabs (output_bfd, o,
					  &elf_section_data (o)->stab_info,
					  finfo->contents))
	    return false;
	}
    }

  return true;
}

/* Generate a reloc when linking an ELF file.  This is a reloc
   requested by the linker, and does come from any input file.  This
   is used to build constructor and destructor tables when linking
   with -Ur.  */

static boolean
elf_reloc_link_order (output_bfd, info, output_section, link_order)
     bfd *output_bfd;
     struct bfd_link_info *info;
     asection *output_section;
     struct bfd_link_order *link_order;
{
  reloc_howto_type *howto;
  long indx;
  bfd_vma offset;
  bfd_vma addend;
  struct elf_link_hash_entry **rel_hash_ptr;
  Elf_Internal_Shdr *rel_hdr;

  howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
  if (howto == NULL)
    {
      bfd_set_error (bfd_error_bad_value);
      return false;
    }

  addend = link_order->u.reloc.p->addend;

  /* Figure out the symbol index.  */
  rel_hash_ptr = (elf_section_data (output_section)->rel_hashes
		  + output_section->reloc_count);
  if (link_order->type == bfd_section_reloc_link_order)
    {
      indx = link_order->u.reloc.p->u.section->target_index;
      BFD_ASSERT (indx != 0);
      *rel_hash_ptr = NULL;
    }
  else
    {
      struct elf_link_hash_entry *h;

      /* Treat a reloc against a defined symbol as though it were
         actually against the section.  */
      h = ((struct elf_link_hash_entry *)
	   bfd_wrapped_link_hash_lookup (output_bfd, info,
					 link_order->u.reloc.p->u.name,
					 false, false, true));
      if (h != NULL
	  && (h->root.type == bfd_link_hash_defined
	      || h->root.type == bfd_link_hash_defweak))
	{
	  asection *section;

	  section = h->root.u.def.section;
	  indx = section->output_section->target_index;
	  *rel_hash_ptr = NULL;
	  /* It seems that we ought to add the symbol value to the
             addend here, but in practice it has already been added
             because it was passed to constructor_callback.  */
	  addend += section->output_section->vma + section->output_offset;
	}
      else if (h != NULL)
	{
	  /* Setting the index to -2 tells elf_link_output_extsym that
	     this symbol is used by a reloc.  */
	  h->indx = -2;
	  *rel_hash_ptr = h;
	  indx = 0;
	}
      else
	{
	  if (! ((*info->callbacks->unattached_reloc)
		 (info, link_order->u.reloc.p->u.name, (bfd *) NULL,
		  (asection *) NULL, (bfd_vma) 0)))
	    return false;
	  indx = 0;
	}
    }

  /* If this is an inplace reloc, we must write the addend into the
     object file.  */
  if (howto->partial_inplace && addend != 0)
    {
      bfd_size_type size;
      bfd_reloc_status_type rstat;
      bfd_byte *buf;
      boolean ok;

      size = bfd_get_reloc_size (howto);
      buf = (bfd_byte *) bfd_zmalloc (size);
      if (buf == (bfd_byte *) NULL)
	return false;
      rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
      switch (rstat)
	{
	case bfd_reloc_ok:
	  break;
	default:
	case bfd_reloc_outofrange:
	  abort ();
	case bfd_reloc_overflow:
	  if (! ((*info->callbacks->reloc_overflow)
		 (info,
		  (link_order->type == bfd_section_reloc_link_order
		   ? bfd_section_name (output_bfd,
				       link_order->u.reloc.p->u.section)
		   : link_order->u.reloc.p->u.name),
		  howto->name, addend, (bfd *) NULL, (asection *) NULL,
		  (bfd_vma) 0)))
	    {
	      free (buf);
	      return false;
	    }
	  break;
	}
      ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf,
				     (file_ptr) link_order->offset, size);
      free (buf);
      if (! ok)
	return false;
    }

  /* The address of a reloc is relative to the section in a
     relocateable file, and is a virtual address in an executable
     file.  */
  offset = link_order->offset;
  if (! info->relocateable)
    offset += output_section->vma;

  rel_hdr = &elf_section_data (output_section)->rel_hdr;

  if (rel_hdr->sh_type == SHT_REL)
    {
      Elf_Internal_Rel irel;
      Elf_External_Rel *erel;

      irel.r_offset = offset;
      irel.r_info = ELF_R_INFO (indx, howto->type);
      erel = ((Elf_External_Rel *) rel_hdr->contents
	      + output_section->reloc_count);
      elf_swap_reloc_out (output_bfd, &irel, erel);
    }
  else
    {
      Elf_Internal_Rela irela;
      Elf_External_Rela *erela;

      irela.r_offset = offset;
      irela.r_info = ELF_R_INFO (indx, howto->type);
      irela.r_addend = addend;
      erela = ((Elf_External_Rela *) rel_hdr->contents
	       + output_section->reloc_count);
      elf_swap_reloca_out (output_bfd, &irela, erela);
    }

  ++output_section->reloc_count;

  return true;
}


/* Allocate a pointer to live in a linker created section.  */

boolean
elf_create_pointer_linker_section (abfd, info, lsect, h, rel)
     bfd *abfd;
     struct bfd_link_info *info;
     elf_linker_section_t *lsect;
     struct elf_link_hash_entry *h;
     const Elf_Internal_Rela *rel;
{
  elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
  elf_linker_section_pointers_t *linker_section_ptr;
  unsigned long r_symndx = ELF_R_SYM (rel->r_info);;

  BFD_ASSERT (lsect != NULL);

  /* Is this a global symbol? */
  if (h != NULL)
    {
      /* Has this symbol already been allocated, if so, our work is done */
      if (_bfd_elf_find_pointer_linker_section (h->linker_section_pointer,
						rel->r_addend,
						lsect->which))
	return true;

      ptr_linker_section_ptr = &h->linker_section_pointer;
      /* Make sure this symbol is output as a dynamic symbol.  */
      if (h->dynindx == -1)
	{
	  if (! elf_link_record_dynamic_symbol (info, h))
	    return false;
	}

      if (lsect->rel_section)
	lsect->rel_section->_raw_size += sizeof (Elf_External_Rela);
    }

  else  /* Allocation of a pointer to a local symbol */
    {
      elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);

      /* Allocate a table to hold the local symbols if first time */
      if (!ptr)
	{
	  int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
	  register unsigned int i;

	  ptr = (elf_linker_section_pointers_t **)
	    bfd_alloc (abfd, num_symbols * sizeof (elf_linker_section_pointers_t *));

	  if (!ptr)
	    return false;

	  elf_local_ptr_offsets (abfd) = ptr;
	  for (i = 0; i < num_symbols; i++)
	    ptr[i] = (elf_linker_section_pointers_t *)0;
	}

      /* Has this symbol already been allocated, if so, our work is done */
      if (_bfd_elf_find_pointer_linker_section (ptr[r_symndx],
						rel->r_addend,
						lsect->which))
	return true;

      ptr_linker_section_ptr = &ptr[r_symndx];

      if (info->shared)
	{
	  /* If we are generating a shared object, we need to
	     output a R_<xxx>_RELATIVE reloc so that the
	     dynamic linker can adjust this GOT entry.  */
	  BFD_ASSERT (lsect->rel_section != NULL);
	  lsect->rel_section->_raw_size += sizeof (Elf_External_Rela);
	}
    }

  /* Allocate space for a pointer in the linker section, and allocate a new pointer record
     from internal memory.  */
  BFD_ASSERT (ptr_linker_section_ptr != NULL);
  linker_section_ptr = (elf_linker_section_pointers_t *)
    bfd_alloc (abfd, sizeof (elf_linker_section_pointers_t));

  if (!linker_section_ptr)
    return false;

  linker_section_ptr->next = *ptr_linker_section_ptr;
  linker_section_ptr->addend = rel->r_addend;
  linker_section_ptr->which = lsect->which;
  linker_section_ptr->written_address_p = false;
  *ptr_linker_section_ptr = linker_section_ptr;

#if 0
  if (lsect->hole_size && lsect->hole_offset < lsect->max_hole_offset)
    {
      linker_section_ptr->offset = lsect->section->_raw_size - lsect->hole_size + (ARCH_SIZE / 8);
      lsect->hole_offset += ARCH_SIZE / 8;
      lsect->sym_offset  += ARCH_SIZE / 8;
      if (lsect->sym_hash)	/* Bump up symbol value if needed */
	{
	  lsect->sym_hash->root.u.def.value += ARCH_SIZE / 8;
#ifdef DEBUG
	  fprintf (stderr, "Bump up %s by %ld, current value = %ld\n",
		   lsect->sym_hash->root.root.string,
		   (long)ARCH_SIZE / 8,
		   (long)lsect->sym_hash->root.u.def.value);
#endif
	}
    }
  else
#endif
    linker_section_ptr->offset = lsect->section->_raw_size;

  lsect->section->_raw_size += ARCH_SIZE / 8;

#ifdef DEBUG
  fprintf (stderr, "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
	   lsect->name, (long)linker_section_ptr->offset, (long)lsect->section->_raw_size);
#endif

  return true;
}


#if ARCH_SIZE==64
#define bfd_put_ptr(BFD,VAL,ADDR) bfd_put_64 (BFD, VAL, ADDR)
#endif
#if ARCH_SIZE==32
#define bfd_put_ptr(BFD,VAL,ADDR) bfd_put_32 (BFD, VAL, ADDR)
#endif

/* Fill in the address for a pointer generated in alinker section.  */

bfd_vma
elf_finish_pointer_linker_section (output_bfd, input_bfd, info, lsect, h, relocation, rel, relative_reloc)
     bfd *output_bfd;
     bfd *input_bfd;
     struct bfd_link_info *info;
     elf_linker_section_t *lsect;
     struct elf_link_hash_entry *h;
     bfd_vma relocation;
     const Elf_Internal_Rela *rel;
     int relative_reloc;
{
  elf_linker_section_pointers_t *linker_section_ptr;

  BFD_ASSERT (lsect != NULL);

  if (h != NULL)		/* global symbol */
    {
      linker_section_ptr = _bfd_elf_find_pointer_linker_section (h->linker_section_pointer,
								 rel->r_addend,
								 lsect->which);

      BFD_ASSERT (linker_section_ptr != NULL);

      if (! elf_hash_table (info)->dynamic_sections_created
	  || (info->shared
	      && info->symbolic
	      && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
	{
	  /* This is actually a static link, or it is a
	     -Bsymbolic link and the symbol is defined
	     locally.  We must initialize this entry in the
	     global section.

	     When doing a dynamic link, we create a .rela.<xxx>
	     relocation entry to initialize the value.  This
	     is done in the finish_dynamic_symbol routine.  */
	  if (!linker_section_ptr->written_address_p)
	    {
	      linker_section_ptr->written_address_p = true;
	      bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
			  lsect->section->contents + linker_section_ptr->offset);
	    }
	}
    }
  else				/* local symbol */
    {
      unsigned long r_symndx = ELF_R_SYM (rel->r_info);
      BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
      BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL);
      linker_section_ptr = _bfd_elf_find_pointer_linker_section (elf_local_ptr_offsets (input_bfd)[r_symndx],
								 rel->r_addend,
								 lsect->which);

      BFD_ASSERT (linker_section_ptr != NULL);

      /* Write out pointer if it hasn't been rewritten out before */
      if (!linker_section_ptr->written_address_p)
	{
	  linker_section_ptr->written_address_p = true;
	  bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
		       lsect->section->contents + linker_section_ptr->offset);

	  if (info->shared)
	    {
	      asection *srel = lsect->rel_section;
	      Elf_Internal_Rela outrel;

	      /* We need to generate a relative reloc for the dynamic linker.  */
	      if (!srel)
		lsect->rel_section = srel = bfd_get_section_by_name (elf_hash_table (info)->dynobj,
								     lsect->rel_name);

	      BFD_ASSERT (srel != NULL);

	      outrel.r_offset = (lsect->section->output_section->vma
				 + lsect->section->output_offset
				 + linker_section_ptr->offset);
	      outrel.r_info = ELF_R_INFO (0, relative_reloc);
	      outrel.r_addend = 0;
	      elf_swap_reloca_out (output_bfd, &outrel,
				   (((Elf_External_Rela *)
				     lsect->section->contents)
				    + lsect->section->reloc_count));
	      ++lsect->section->reloc_count;
	    }
	}
    }

  relocation = (lsect->section->output_offset
		+ linker_section_ptr->offset
		- lsect->hole_offset
		- lsect->sym_offset);

#ifdef DEBUG
  fprintf (stderr, "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
	   lsect->name, (long)relocation, (long)relocation);
#endif

  /* Subtract out the addend, because it will get added back in by the normal
     processing.  */
  return relocation - linker_section_ptr->addend;
}