aboutsummaryrefslogtreecommitdiff
path: root/bfd/elf.c
blob: 185028cbd97ae0901c4276c8a4787b12bb75875a (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
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13171
13172
13173
13174
13175
13176
13177
13178
13179
13180
13181
13182
13183
13184
13185
13186
13187
13188
13189
13190
13191
13192
13193
13194
13195
13196
13197
13198
13199
13200
13201
13202
13203
13204
13205
13206
13207
13208
13209
13210
13211
13212
13213
13214
13215
13216
13217
13218
13219
13220
13221
13222
13223
13224
13225
13226
13227
13228
13229
13230
13231
13232
13233
13234
13235
13236
13237
13238
13239
13240
13241
13242
13243
13244
13245
13246
13247
13248
13249
13250
13251
13252
13253
13254
13255
13256
13257
13258
13259
13260
13261
13262
13263
13264
13265
13266
13267
13268
13269
13270
13271
13272
13273
13274
13275
13276
13277
13278
13279
13280
13281
13282
13283
13284
13285
13286
13287
13288
13289
13290
13291
13292
13293
13294
13295
13296
13297
13298
13299
13300
13301
13302
13303
13304
13305
13306
13307
13308
13309
13310
13311
13312
13313
13314
13315
13316
13317
13318
13319
13320
13321
13322
13323
13324
13325
13326
13327
13328
13329
13330
13331
13332
13333
13334
13335
13336
13337
13338
13339
13340
13341
13342
13343
13344
13345
13346
13347
13348
13349
13350
13351
13352
13353
13354
13355
13356
13357
13358
13359
13360
13361
13362
13363
13364
13365
13366
13367
13368
13369
13370
13371
13372
13373
13374
13375
13376
13377
13378
13379
13380
13381
13382
13383
13384
13385
13386
13387
13388
13389
13390
13391
13392
13393
13394
13395
13396
13397
13398
13399
13400
13401
13402
13403
13404
13405
13406
13407
13408
13409
13410
13411
13412
13413
13414
13415
13416
13417
13418
13419
13420
13421
13422
13423
13424
13425
13426
13427
13428
13429
13430
13431
13432
13433
13434
13435
13436
13437
13438
13439
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13461
13462
13463
13464
13465
13466
13467
13468
13469
13470
13471
13472
13473
13474
13475
13476
13477
13478
13479
13480
13481
13482
13483
13484
13485
13486
13487
13488
13489
13490
13491
13492
13493
13494
13495
13496
13497
13498
13499
13500
13501
13502
13503
13504
13505
13506
13507
13508
13509
13510
13511
13512
13513
13514
13515
13516
13517
13518
13519
13520
13521
13522
13523
13524
13525
13526
13527
13528
13529
13530
13531
13532
13533
13534
13535
13536
13537
13538
13539
13540
13541
13542
13543
13544
13545
13546
13547
13548
13549
13550
13551
13552
13553
13554
13555
13556
13557
13558
13559
13560
13561
13562
13563
13564
13565
13566
13567
13568
13569
13570
13571
13572
13573
13574
13575
13576
13577
13578
13579
13580
13581
13582
13583
13584
13585
13586
13587
13588
13589
13590
13591
13592
13593
13594
13595
13596
13597
13598
13599
13600
13601
13602
13603
13604
13605
13606
13607
13608
13609
13610
/* ELF executable support for BFD.

   Copyright (C) 1993-2023 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 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */


/*
SECTION
	ELF backends

	BFD support for ELF formats is being worked on.
	Currently, the best supported back ends are for sparc and i386
	(running svr4 or Solaris 2).

	Documentation of the internals of the support code still needs
	to be written.  The code is changing quickly enough that we
	haven't bothered yet.  */

/* For sparc64-cross-sparc32.  */
#define _SYSCALL32
#include "sysdep.h"
#include <limits.h>
#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#define ARCH_SIZE 0
#include "elf-bfd.h"
#include "libiberty.h"
#include "safe-ctype.h"
#include "elf-linux-core.h"

#ifdef CORE_HEADER
#include CORE_HEADER
#endif

static int elf_sort_sections (const void *, const void *);
static bool assign_file_positions_except_relocs (bfd *, struct bfd_link_info *);
static bool swap_out_syms (bfd *, struct elf_strtab_hash **, int,
			   struct bfd_link_info *);
static bool elf_parse_notes (bfd *abfd, char *buf, size_t size,
			     file_ptr offset, size_t align);

/* Swap version information in and out.  The version information is
   currently size independent.  If that ever changes, this code will
   need to move into elfcode.h.  */

/* Swap in a Verdef structure.  */

void
_bfd_elf_swap_verdef_in (bfd *abfd,
			 const Elf_External_Verdef *src,
			 Elf_Internal_Verdef *dst)
{
  dst->vd_version = H_GET_16 (abfd, src->vd_version);
  dst->vd_flags   = H_GET_16 (abfd, src->vd_flags);
  dst->vd_ndx     = H_GET_16 (abfd, src->vd_ndx);
  dst->vd_cnt     = H_GET_16 (abfd, src->vd_cnt);
  dst->vd_hash    = H_GET_32 (abfd, src->vd_hash);
  dst->vd_aux     = H_GET_32 (abfd, src->vd_aux);
  dst->vd_next    = H_GET_32 (abfd, src->vd_next);
}

/* Swap out a Verdef structure.  */

void
_bfd_elf_swap_verdef_out (bfd *abfd,
			  const Elf_Internal_Verdef *src,
			  Elf_External_Verdef *dst)
{
  H_PUT_16 (abfd, src->vd_version, dst->vd_version);
  H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
  H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
  H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
  H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
  H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
  H_PUT_32 (abfd, src->vd_next, dst->vd_next);
}

/* Swap in a Verdaux structure.  */

void
_bfd_elf_swap_verdaux_in (bfd *abfd,
			  const Elf_External_Verdaux *src,
			  Elf_Internal_Verdaux *dst)
{
  dst->vda_name = H_GET_32 (abfd, src->vda_name);
  dst->vda_next = H_GET_32 (abfd, src->vda_next);
}

/* Swap out a Verdaux structure.  */

void
_bfd_elf_swap_verdaux_out (bfd *abfd,
			   const Elf_Internal_Verdaux *src,
			   Elf_External_Verdaux *dst)
{
  H_PUT_32 (abfd, src->vda_name, dst->vda_name);
  H_PUT_32 (abfd, src->vda_next, dst->vda_next);
}

/* Swap in a Verneed structure.  */

void
_bfd_elf_swap_verneed_in (bfd *abfd,
			  const Elf_External_Verneed *src,
			  Elf_Internal_Verneed *dst)
{
  dst->vn_version = H_GET_16 (abfd, src->vn_version);
  dst->vn_cnt     = H_GET_16 (abfd, src->vn_cnt);
  dst->vn_file    = H_GET_32 (abfd, src->vn_file);
  dst->vn_aux     = H_GET_32 (abfd, src->vn_aux);
  dst->vn_next    = H_GET_32 (abfd, src->vn_next);
}

/* Swap out a Verneed structure.  */

void
_bfd_elf_swap_verneed_out (bfd *abfd,
			   const Elf_Internal_Verneed *src,
			   Elf_External_Verneed *dst)
{
  H_PUT_16 (abfd, src->vn_version, dst->vn_version);
  H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
  H_PUT_32 (abfd, src->vn_file, dst->vn_file);
  H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
  H_PUT_32 (abfd, src->vn_next, dst->vn_next);
}

/* Swap in a Vernaux structure.  */

void
_bfd_elf_swap_vernaux_in (bfd *abfd,
			  const Elf_External_Vernaux *src,
			  Elf_Internal_Vernaux *dst)
{
  dst->vna_hash  = H_GET_32 (abfd, src->vna_hash);
  dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
  dst->vna_other = H_GET_16 (abfd, src->vna_other);
  dst->vna_name  = H_GET_32 (abfd, src->vna_name);
  dst->vna_next  = H_GET_32 (abfd, src->vna_next);
}

/* Swap out a Vernaux structure.  */

void
_bfd_elf_swap_vernaux_out (bfd *abfd,
			   const Elf_Internal_Vernaux *src,
			   Elf_External_Vernaux *dst)
{
  H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
  H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
  H_PUT_16 (abfd, src->vna_other, dst->vna_other);
  H_PUT_32 (abfd, src->vna_name, dst->vna_name);
  H_PUT_32 (abfd, src->vna_next, dst->vna_next);
}

/* Swap in a Versym structure.  */

void
_bfd_elf_swap_versym_in (bfd *abfd,
			 const Elf_External_Versym *src,
			 Elf_Internal_Versym *dst)
{
  dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
}

/* Swap out a Versym structure.  */

void
_bfd_elf_swap_versym_out (bfd *abfd,
			  const Elf_Internal_Versym *src,
			  Elf_External_Versym *dst)
{
  H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
}

/* Standard ELF hash function.  Do not change this function; you will
   cause invalid hash tables to be generated.  */

unsigned long
bfd_elf_hash (const char *namearg)
{
  const unsigned char *name = (const unsigned char *) namearg;
  unsigned long h = 0;
  unsigned long g;
  int ch;

  while ((ch = *name++) != '\0')
    {
      h = (h << 4) + ch;
      if ((g = (h & 0xf0000000)) != 0)
	{
	  h ^= g >> 24;
	  /* The ELF ABI says `h &= ~g', but this is equivalent in
	     this case and on some machines one insn instead of two.  */
	  h ^= g;
	}
    }
  return h & 0xffffffff;
}

/* DT_GNU_HASH hash function.  Do not change this function; you will
   cause invalid hash tables to be generated.  */

unsigned long
bfd_elf_gnu_hash (const char *namearg)
{
  const unsigned char *name = (const unsigned char *) namearg;
  unsigned long h = 5381;
  unsigned char ch;

  while ((ch = *name++) != '\0')
    h = (h << 5) + h + ch;
  return h & 0xffffffff;
}

/* Create a tdata field OBJECT_SIZE bytes in length, zeroed out and with
   the object_id field of an elf_obj_tdata field set to OBJECT_ID.  */
bool
bfd_elf_allocate_object (bfd *abfd,
			 size_t object_size,
			 enum elf_target_id object_id)
{
  BFD_ASSERT (object_size >= sizeof (struct elf_obj_tdata));
  abfd->tdata.any = bfd_zalloc (abfd, object_size);
  if (abfd->tdata.any == NULL)
    return false;

  elf_object_id (abfd) = object_id;
  if (abfd->direction != read_direction)
    {
      struct output_elf_obj_tdata *o = bfd_zalloc (abfd, sizeof *o);
      if (o == NULL)
	return false;
      elf_tdata (abfd)->o = o;
      elf_program_header_size (abfd) = (bfd_size_type) -1;
    }
  return true;
}


bool
bfd_elf_make_object (bfd *abfd)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata),
				  bed->target_id);
}

bool
bfd_elf_mkcorefile (bfd *abfd)
{
  /* I think this can be done just like an object file.  */
  if (!abfd->xvec->_bfd_set_format[(int) bfd_object] (abfd))
    return false;
  elf_tdata (abfd)->core = bfd_zalloc (abfd, sizeof (*elf_tdata (abfd)->core));
  return elf_tdata (abfd)->core != NULL;
}

char *
bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
{
  Elf_Internal_Shdr **i_shdrp;
  bfd_byte *shstrtab = NULL;
  file_ptr offset;
  bfd_size_type shstrtabsize;

  i_shdrp = elf_elfsections (abfd);
  if (i_shdrp == 0
      || shindex >= elf_numsections (abfd)
      || i_shdrp[shindex] == 0)
    return NULL;

  shstrtab = i_shdrp[shindex]->contents;
  if (shstrtab == NULL)
    {
      /* No cached one, attempt to read, and cache what we read.  */
      offset = i_shdrp[shindex]->sh_offset;
      shstrtabsize = i_shdrp[shindex]->sh_size;

      /* Allocate and clear an extra byte at the end, to prevent crashes
	 in case the string table is not terminated.  */
      if (shstrtabsize + 1 <= 1
	  || bfd_seek (abfd, offset, SEEK_SET) != 0
	  || (shstrtab = _bfd_alloc_and_read (abfd, shstrtabsize + 1,
					      shstrtabsize)) == NULL)
	{
	  /* Once we've failed to read it, make sure we don't keep
	     trying.  Otherwise, we'll keep allocating space for
	     the string table over and over.  */
	  i_shdrp[shindex]->sh_size = 0;
	}
      else
	shstrtab[shstrtabsize] = '\0';
      i_shdrp[shindex]->contents = shstrtab;
    }
  return (char *) shstrtab;
}

char *
bfd_elf_string_from_elf_section (bfd *abfd,
				 unsigned int shindex,
				 unsigned int strindex)
{
  Elf_Internal_Shdr *hdr;

  if (strindex == 0)
    return "";

  if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd))
    return NULL;

  hdr = elf_elfsections (abfd)[shindex];

  if (hdr->contents == NULL)
    {
      if (hdr->sh_type != SHT_STRTAB && hdr->sh_type < SHT_LOOS)
	{
	  /* PR 17512: file: f057ec89.  */
	  /* xgettext:c-format */
	  _bfd_error_handler (_("%pB: attempt to load strings from"
				" a non-string section (number %d)"),
			      abfd, shindex);
	  return NULL;
	}

      if (bfd_elf_get_str_section (abfd, shindex) == NULL)
	return NULL;
    }
  else
    {
      /* PR 24273: The string section's contents may have already
	 been loaded elsewhere, eg because a corrupt file has the
	 string section index in the ELF header pointing at a group
	 section.  So be paranoid, and test that the last byte of
	 the section is zero.  */
      if (hdr->sh_size == 0 || hdr->contents[hdr->sh_size - 1] != 0)
	return NULL;
    }

  if (strindex >= hdr->sh_size)
    {
      unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx;
      _bfd_error_handler
	/* xgettext:c-format */
	(_("%pB: invalid string offset %u >= %" PRIu64 " for section `%s'"),
	 abfd, strindex, (uint64_t) hdr->sh_size,
	 (shindex == shstrndx && strindex == hdr->sh_name
	  ? ".shstrtab"
	  : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name)));
      return NULL;
    }

  return ((char *) hdr->contents) + strindex;
}

/* Read and convert symbols to internal format.
   SYMCOUNT specifies the number of symbols to read, starting from
   symbol SYMOFFSET.  If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
   are non-NULL, they are used to store the internal symbols, external
   symbols, and symbol section index extensions, respectively.
   Returns a pointer to the internal symbol buffer (malloced if necessary)
   or NULL if there were no symbols or some kind of problem.  */

Elf_Internal_Sym *
bfd_elf_get_elf_syms (bfd *ibfd,
		      Elf_Internal_Shdr *symtab_hdr,
		      size_t symcount,
		      size_t symoffset,
		      Elf_Internal_Sym *intsym_buf,
		      void *extsym_buf,
		      Elf_External_Sym_Shndx *extshndx_buf)
{
  Elf_Internal_Shdr *shndx_hdr;
  void *alloc_ext;
  const bfd_byte *esym;
  Elf_External_Sym_Shndx *alloc_extshndx;
  Elf_External_Sym_Shndx *shndx;
  Elf_Internal_Sym *alloc_intsym;
  Elf_Internal_Sym *isym;
  Elf_Internal_Sym *isymend;
  const struct elf_backend_data *bed;
  size_t extsym_size;
  size_t amt;
  file_ptr pos;

  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
    abort ();

  if (symcount == 0)
    return intsym_buf;

  /* Normal syms might have section extension entries.  */
  shndx_hdr = NULL;
  if (elf_symtab_shndx_list (ibfd) != NULL)
    {
      elf_section_list * entry;
      Elf_Internal_Shdr **sections = elf_elfsections (ibfd);

      /* Find an index section that is linked to this symtab section.  */
      for (entry = elf_symtab_shndx_list (ibfd); entry != NULL; entry = entry->next)
	{
	  /* PR 20063.  */
	  if (entry->hdr.sh_link >= elf_numsections (ibfd))
	    continue;

	  if (sections[entry->hdr.sh_link] == symtab_hdr)
	    {
	      shndx_hdr = & entry->hdr;
	      break;
	    };
	}

      if (shndx_hdr == NULL)
	{
	  if (symtab_hdr == &elf_symtab_hdr (ibfd))
	    /* Not really accurate, but this was how the old code used
	       to work.  */
	    shndx_hdr = &elf_symtab_shndx_list (ibfd)->hdr;
	  /* Otherwise we do nothing.  The assumption is that
	     the index table will not be needed.  */
	}
    }

  /* Read the symbols.  */
  alloc_ext = NULL;
  alloc_extshndx = NULL;
  alloc_intsym = NULL;
  bed = get_elf_backend_data (ibfd);
  extsym_size = bed->s->sizeof_sym;
  if (_bfd_mul_overflow (symcount, extsym_size, &amt))
    {
      bfd_set_error (bfd_error_file_too_big);
      intsym_buf = NULL;
      goto out;
    }
  pos = symtab_hdr->sh_offset + symoffset * extsym_size;
  if (extsym_buf == NULL)
    {
      alloc_ext = bfd_malloc (amt);
      extsym_buf = alloc_ext;
    }
  if (extsym_buf == NULL
      || bfd_seek (ibfd, pos, SEEK_SET) != 0
      || bfd_bread (extsym_buf, amt, ibfd) != amt)
    {
      intsym_buf = NULL;
      goto out;
    }

  if (shndx_hdr == NULL || shndx_hdr->sh_size == 0)
    extshndx_buf = NULL;
  else
    {
      if (_bfd_mul_overflow (symcount, sizeof (Elf_External_Sym_Shndx), &amt))
	{
	  bfd_set_error (bfd_error_file_too_big);
	  intsym_buf = NULL;
	  goto out;
	}
      pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
      if (extshndx_buf == NULL)
	{
	  alloc_extshndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
	  extshndx_buf = alloc_extshndx;
	}
      if (extshndx_buf == NULL
	  || bfd_seek (ibfd, pos, SEEK_SET) != 0
	  || bfd_bread (extshndx_buf, amt, ibfd) != amt)
	{
	  intsym_buf = NULL;
	  goto out;
	}
    }

  if (intsym_buf == NULL)
    {
      if (_bfd_mul_overflow (symcount, sizeof (Elf_Internal_Sym), &amt))
	{
	  bfd_set_error (bfd_error_file_too_big);
	  goto out;
	}
      alloc_intsym = (Elf_Internal_Sym *) bfd_malloc (amt);
      intsym_buf = alloc_intsym;
      if (intsym_buf == NULL)
	goto out;
    }

  /* Convert the symbols to internal form.  */
  isymend = intsym_buf + symcount;
  for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf,
	   shndx = extshndx_buf;
       isym < isymend;
       esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
    if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym))
      {
	symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size;
	/* xgettext:c-format */
	_bfd_error_handler (_("%pB symbol number %lu references"
			      " nonexistent SHT_SYMTAB_SHNDX section"),
			    ibfd, (unsigned long) symoffset);
	free (alloc_intsym);
	intsym_buf = NULL;
	goto out;
      }

 out:
  free (alloc_ext);
  free (alloc_extshndx);

  return intsym_buf;
}

/* Look up a symbol name.  */
const char *
bfd_elf_sym_name (bfd *abfd,
		  Elf_Internal_Shdr *symtab_hdr,
		  Elf_Internal_Sym *isym,
		  asection *sym_sec)
{
  const char *name;
  unsigned int iname = isym->st_name;
  unsigned int shindex = symtab_hdr->sh_link;

  if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
      /* Check for a bogus st_shndx to avoid crashing.  */
      && isym->st_shndx < elf_numsections (abfd))
    {
      iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name;
      shindex = elf_elfheader (abfd)->e_shstrndx;
    }

  name = bfd_elf_string_from_elf_section (abfd, shindex, iname);
  if (name == NULL)
    name = "(null)";
  else if (sym_sec && *name == '\0')
    name = bfd_section_name (sym_sec);

  return name;
}

/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
   sections.  The first element is the flags, the rest are section
   pointers.  */

typedef union elf_internal_group {
  Elf_Internal_Shdr *shdr;
  unsigned int flags;
} Elf_Internal_Group;

/* Return the name of the group signature symbol.  Why isn't the
   signature just a string?  */

static const char *
group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr)
{
  Elf_Internal_Shdr *hdr;
  unsigned char esym[sizeof (Elf64_External_Sym)];
  Elf_External_Sym_Shndx eshndx;
  Elf_Internal_Sym isym;

  /* First we need to ensure the symbol table is available.  Make sure
     that it is a symbol table section.  */
  if (ghdr->sh_link >= elf_numsections (abfd))
    return NULL;
  hdr = elf_elfsections (abfd) [ghdr->sh_link];
  if (hdr->sh_type != SHT_SYMTAB
      || ! bfd_section_from_shdr (abfd, ghdr->sh_link))
    return NULL;

  /* Go read the symbol.  */
  hdr = &elf_tdata (abfd)->symtab_hdr;
  if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info,
			    &isym, esym, &eshndx) == NULL)
    return NULL;

  return bfd_elf_sym_name (abfd, hdr, &isym, NULL);
}

/* Set next_in_group list pointer, and group name for NEWSECT.  */

static bool
setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
{
  unsigned int num_group = elf_tdata (abfd)->num_group;

  /* If num_group is zero, read in all SHT_GROUP sections.  The count
     is set to -1 if there are no SHT_GROUP sections.  */
  if (num_group == 0)
    {
      unsigned int i, shnum;

      /* First count the number of groups.  If we have a SHT_GROUP
	 section with just a flag word (ie. sh_size is 4), ignore it.  */
      shnum = elf_numsections (abfd);
      num_group = 0;

#define IS_VALID_GROUP_SECTION_HEADER(shdr, minsize)	\
	(   (shdr)->sh_type == SHT_GROUP		\
	 && (shdr)->sh_size >= minsize			\
	 && (shdr)->sh_entsize == GRP_ENTRY_SIZE	\
	 && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0)

      for (i = 0; i < shnum; i++)
	{
	  Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];

	  if (IS_VALID_GROUP_SECTION_HEADER (shdr, 2 * GRP_ENTRY_SIZE))
	    num_group += 1;
	}

      if (num_group == 0)
	{
	  num_group = (unsigned) -1;
	  elf_tdata (abfd)->num_group = num_group;
	  elf_tdata (abfd)->group_sect_ptr = NULL;
	}
      else
	{
	  /* We keep a list of elf section headers for group sections,
	     so we can find them quickly.  */
	  size_t amt;

	  elf_tdata (abfd)->num_group = num_group;
	  amt = num_group * sizeof (Elf_Internal_Shdr *);
	  elf_tdata (abfd)->group_sect_ptr
	    = (Elf_Internal_Shdr **) bfd_zalloc (abfd, amt);
	  if (elf_tdata (abfd)->group_sect_ptr == NULL)
	    return false;
	  num_group = 0;

	  for (i = 0; i < shnum; i++)
	    {
	      Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];

	      if (IS_VALID_GROUP_SECTION_HEADER (shdr, 2 * GRP_ENTRY_SIZE))
		{
		  unsigned char *src;
		  Elf_Internal_Group *dest;

		  /* Make sure the group section has a BFD section
		     attached to it.  */
		  if (!bfd_section_from_shdr (abfd, i))
		    return false;

		  /* Add to list of sections.  */
		  elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
		  num_group += 1;

		  /* Read the raw contents.  */
		  BFD_ASSERT (sizeof (*dest) >= 4 && sizeof (*dest) % 4 == 0);
		  shdr->contents = NULL;
		  if (_bfd_mul_overflow (shdr->sh_size,
					 sizeof (*dest) / 4, &amt)
		      || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
		      || !(shdr->contents
			   = _bfd_alloc_and_read (abfd, amt, shdr->sh_size)))
		    {
		      _bfd_error_handler
			/* xgettext:c-format */
			(_("%pB: invalid size field in group section"
			   " header: %#" PRIx64 ""),
			 abfd, (uint64_t) shdr->sh_size);
		      bfd_set_error (bfd_error_bad_value);
		      -- num_group;
		      continue;
		    }

		  /* Translate raw contents, a flag word followed by an
		     array of elf section indices all in target byte order,
		     to the flag word followed by an array of elf section
		     pointers.  */
		  src = shdr->contents + shdr->sh_size;
		  dest = (Elf_Internal_Group *) (shdr->contents + amt);

		  while (1)
		    {
		      unsigned int idx;

		      src -= 4;
		      --dest;
		      idx = H_GET_32 (abfd, src);
		      if (src == shdr->contents)
			{
			  dest->shdr = NULL;
			  dest->flags = idx;
			  if (shdr->bfd_section != NULL && (idx & GRP_COMDAT))
			    shdr->bfd_section->flags
			      |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
			  break;
			}
		      if (idx < shnum)
			{
			  dest->shdr = elf_elfsections (abfd)[idx];
			  /* PR binutils/23199: All sections in a
			     section group should be marked with
			     SHF_GROUP.  But some tools generate
			     broken objects without SHF_GROUP.  Fix
			     them up here.  */
			  dest->shdr->sh_flags |= SHF_GROUP;
			}
		      if (idx >= shnum
			  || dest->shdr->sh_type == SHT_GROUP)
			{
			  _bfd_error_handler
			    (_("%pB: invalid entry in SHT_GROUP section [%u]"),
			       abfd, i);
			  dest->shdr = NULL;
			}
		    }
		}
	    }

	  /* PR 17510: Corrupt binaries might contain invalid groups.  */
	  if (num_group != (unsigned) elf_tdata (abfd)->num_group)
	    {
	      elf_tdata (abfd)->num_group = num_group;

	      /* If all groups are invalid then fail.  */
	      if (num_group == 0)
		{
		  elf_tdata (abfd)->group_sect_ptr = NULL;
		  elf_tdata (abfd)->num_group = num_group = -1;
		  _bfd_error_handler
		    (_("%pB: no valid group sections found"), abfd);
		  bfd_set_error (bfd_error_bad_value);
		}
	    }
	}
    }

  if (num_group != (unsigned) -1)
    {
      unsigned int search_offset = elf_tdata (abfd)->group_search_offset;
      unsigned int j;

      for (j = 0; j < num_group; j++)
	{
	  /* Begin search from previous found group.  */
	  unsigned i = (j + search_offset) % num_group;

	  Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
	  Elf_Internal_Group *idx;
	  bfd_size_type n_elt;

	  if (shdr == NULL)
	    continue;

	  idx = (Elf_Internal_Group *) shdr->contents;
	  if (idx == NULL || shdr->sh_size < 4)
	    {
	      /* See PR 21957 for a reproducer.  */
	      /* xgettext:c-format */
	      _bfd_error_handler (_("%pB: group section '%pA' has no contents"),
				  abfd, shdr->bfd_section);
	      elf_tdata (abfd)->group_sect_ptr[i] = NULL;
	      bfd_set_error (bfd_error_bad_value);
	      return false;
	    }
	  n_elt = shdr->sh_size / 4;

	  /* Look through this group's sections to see if current
	     section is a member.  */
	  while (--n_elt != 0)
	    if ((++idx)->shdr == hdr)
	      {
		asection *s = NULL;

		/* We are a member of this group.  Go looking through
		   other members to see if any others are linked via
		   next_in_group.  */
		idx = (Elf_Internal_Group *) shdr->contents;
		n_elt = shdr->sh_size / 4;
		while (--n_elt != 0)
		  if ((++idx)->shdr != NULL
		      && (s = idx->shdr->bfd_section) != NULL
		      && elf_next_in_group (s) != NULL)
		    break;
		if (n_elt != 0)
		  {
		    /* Snarf the group name from other member, and
		       insert current section in circular list.  */
		    elf_group_name (newsect) = elf_group_name (s);
		    elf_next_in_group (newsect) = elf_next_in_group (s);
		    elf_next_in_group (s) = newsect;
		  }
		else
		  {
		    const char *gname;

		    gname = group_signature (abfd, shdr);
		    if (gname == NULL)
		      return false;
		    elf_group_name (newsect) = gname;

		    /* Start a circular list with one element.  */
		    elf_next_in_group (newsect) = newsect;
		  }

		/* If the group section has been created, point to the
		   new member.  */
		if (shdr->bfd_section != NULL)
		  elf_next_in_group (shdr->bfd_section) = newsect;

		elf_tdata (abfd)->group_search_offset = i;
		j = num_group - 1;
		break;
	      }
	}
    }

  if (elf_group_name (newsect) == NULL)
    {
      /* xgettext:c-format */
      _bfd_error_handler (_("%pB: no group info for section '%pA'"),
			  abfd, newsect);
      /* PR 29532: Return true here, even though the group info has not been
	 read.  Separate debug info files can have empty group sections, but
	 we do not want this to prevent them from being loaded as otherwise
	 GDB will not be able to use them.  */
      return true;
    }
  return true;
}

bool
_bfd_elf_setup_sections (bfd *abfd)
{
  unsigned int i;
  unsigned int num_group = elf_tdata (abfd)->num_group;
  bool result = true;
  asection *s;

  /* Process SHF_LINK_ORDER.  */
  for (s = abfd->sections; s != NULL; s = s->next)
    {
      Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr;
      if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0)
	{
	  unsigned int elfsec = this_hdr->sh_link;
	  /* An sh_link value of 0 is now allowed.  It indicates that linked
	     to section has already been discarded, but that the current
	     section has been retained for some other reason.  This linking
	     section is still a candidate for later garbage collection
	     however.  */
	  if (elfsec == 0)
	    {
	      elf_linked_to_section (s) = NULL;
	    }
	  else
	    {
	      asection *linksec = NULL;

	      if (elfsec < elf_numsections (abfd))
		{
		  this_hdr = elf_elfsections (abfd)[elfsec];
		  linksec = this_hdr->bfd_section;
		}

	      /* PR 1991, 2008:
		 Some strip/objcopy may leave an incorrect value in
		 sh_link.  We don't want to proceed.  */
	      if (linksec == NULL)
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB: sh_link [%d] in section `%pA' is incorrect"),
		     s->owner, elfsec, s);
		  result = false;
		}

	      elf_linked_to_section (s) = linksec;
	    }
	}
      else if (this_hdr->sh_type == SHT_GROUP
	       && elf_next_in_group (s) == NULL)
	{
	  _bfd_error_handler
	    /* xgettext:c-format */
	    (_("%pB: SHT_GROUP section [index %d] has no SHF_GROUP sections"),
	     abfd, elf_section_data (s)->this_idx);
	  result = false;
	}
    }

  /* Process section groups.  */
  if (num_group == (unsigned) -1)
    return result;

  for (i = 0; i < num_group; i++)
    {
      Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
      Elf_Internal_Group *idx;
      unsigned int n_elt;

      /* PR binutils/18758: Beware of corrupt binaries with invalid
	 group data.  */
      if (shdr == NULL || shdr->bfd_section == NULL || shdr->contents == NULL)
	{
	  _bfd_error_handler
	    /* xgettext:c-format */
	    (_("%pB: section group entry number %u is corrupt"),
	     abfd, i);
	  result = false;
	  continue;
	}

      idx = (Elf_Internal_Group *) shdr->contents;
      n_elt = shdr->sh_size / 4;

      while (--n_elt != 0)
	{
	  ++ idx;

	  if (idx->shdr == NULL)
	    continue;
	  else if (idx->shdr->bfd_section)
	    elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section;
	  else if (idx->shdr->sh_type != SHT_RELA
		   && idx->shdr->sh_type != SHT_REL)
	    {
	      /* There are some unknown sections in the group.  */
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB: unknown type [%#x] section `%s' in group [%pA]"),
		 abfd,
		 idx->shdr->sh_type,
		 bfd_elf_string_from_elf_section (abfd,
						  (elf_elfheader (abfd)
						   ->e_shstrndx),
						  idx->shdr->sh_name),
		 shdr->bfd_section);
	      result = false;
	    }
	}
    }

  return result;
}

bool
bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec)
{
  return elf_next_in_group (sec) != NULL;
}

const char *
bfd_elf_group_name (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec)
{
  if (elf_sec_group (sec) != NULL)
    return elf_group_name (sec);
  return NULL;
}

/* This a copy of lto_section defined in GCC (lto-streamer.h).  */

struct lto_section
{
  int16_t major_version;
  int16_t minor_version;
  unsigned char slim_object;

  /* Flags is a private field that is not defined publicly.  */
  uint16_t flags;
};

/* Make a BFD section from an ELF section.  We store a pointer to the
   BFD section in the bfd_section field of the header.  */

bool
_bfd_elf_make_section_from_shdr (bfd *abfd,
				 Elf_Internal_Shdr *hdr,
				 const char *name,
				 int shindex)
{
  asection *newsect;
  flagword flags;
  const struct elf_backend_data *bed;
  unsigned int opb = bfd_octets_per_byte (abfd, NULL);

  if (hdr->bfd_section != NULL)
    return true;

  newsect = bfd_make_section_anyway (abfd, name);
  if (newsect == NULL)
    return false;

  hdr->bfd_section = newsect;
  elf_section_data (newsect)->this_hdr = *hdr;
  elf_section_data (newsect)->this_idx = shindex;

  /* Always use the real type/flags.  */
  elf_section_type (newsect) = hdr->sh_type;
  elf_section_flags (newsect) = hdr->sh_flags;

  newsect->filepos = hdr->sh_offset;

  flags = SEC_NO_FLAGS;
  if (hdr->sh_type != SHT_NOBITS)
    flags |= SEC_HAS_CONTENTS;
  if (hdr->sh_type == SHT_GROUP)
    flags |= SEC_GROUP;
  if ((hdr->sh_flags & SHF_ALLOC) != 0)
    {
      flags |= SEC_ALLOC;
      if (hdr->sh_type != SHT_NOBITS)
	flags |= SEC_LOAD;
    }
  if ((hdr->sh_flags & SHF_WRITE) == 0)
    flags |= SEC_READONLY;
  if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
    flags |= SEC_CODE;
  else if ((flags & SEC_LOAD) != 0)
    flags |= SEC_DATA;
  if ((hdr->sh_flags & SHF_MERGE) != 0)
    {
      flags |= SEC_MERGE;
      newsect->entsize = hdr->sh_entsize;
    }
  if ((hdr->sh_flags & SHF_STRINGS) != 0)
    flags |= SEC_STRINGS;
  if (hdr->sh_flags & SHF_GROUP)
    if (!setup_group (abfd, hdr, newsect))
      return false;
  if ((hdr->sh_flags & SHF_TLS) != 0)
    flags |= SEC_THREAD_LOCAL;
  if ((hdr->sh_flags & SHF_EXCLUDE) != 0)
    flags |= SEC_EXCLUDE;

  switch (elf_elfheader (abfd)->e_ident[EI_OSABI])
    {
      /* FIXME: We should not recognize SHF_GNU_MBIND for ELFOSABI_NONE,
	 but binutils as of 2019-07-23 did not set the EI_OSABI header
	 byte.  */
    case ELFOSABI_GNU:
    case ELFOSABI_FREEBSD:
      if ((hdr->sh_flags & SHF_GNU_RETAIN) != 0)
	elf_tdata (abfd)->has_gnu_osabi |= elf_gnu_osabi_retain;
      /* Fall through */
    case ELFOSABI_NONE:
      if ((hdr->sh_flags & SHF_GNU_MBIND) != 0)
	elf_tdata (abfd)->has_gnu_osabi |= elf_gnu_osabi_mbind;
      break;
    }

  if ((flags & SEC_ALLOC) == 0)
    {
      /* The debugging sections appear to be recognized only by name,
	 not any sort of flag.  Their SEC_ALLOC bits are cleared.  */
      if (name [0] == '.')
	{
	  if (startswith (name, ".debug")
	      || startswith (name, ".gnu.debuglto_.debug_")
	      || startswith (name, ".gnu.linkonce.wi.")
	      || startswith (name, ".zdebug"))
	    flags |= SEC_DEBUGGING | SEC_ELF_OCTETS;
	  else if (startswith (name, GNU_BUILD_ATTRS_SECTION_NAME)
		   || startswith (name, ".note.gnu"))
	    {
	      flags |= SEC_ELF_OCTETS;
	      opb = 1;
	    }
	  else if (startswith (name, ".line")
		   || startswith (name, ".stab")
		   || strcmp (name, ".gdb_index") == 0)
	    flags |= SEC_DEBUGGING;
	}
    }

  if (!bfd_set_section_vma (newsect, hdr->sh_addr / opb)
      || !bfd_set_section_size (newsect, hdr->sh_size)
      || !bfd_set_section_alignment (newsect, bfd_log2 (hdr->sh_addralign
							& -hdr->sh_addralign)))
    return false;

  /* As a GNU extension, if the name begins with .gnu.linkonce, we
     only link a single copy of the section.  This is used to support
     g++.  g++ will emit each template expansion in its own section.
     The symbols will be defined as weak, so that multiple definitions
     are permitted.  The GNU linker extension is to actually discard
     all but one of the sections.  */
  if (startswith (name, ".gnu.linkonce")
      && elf_next_in_group (newsect) == NULL)
    flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;

  if (!bfd_set_section_flags (newsect, flags))
    return false;

  bed = get_elf_backend_data (abfd);
  if (bed->elf_backend_section_flags)
    if (!bed->elf_backend_section_flags (hdr))
      return false;

  /* We do not parse the PT_NOTE segments as we are interested even in the
     separate debug info files which may have the segments offsets corrupted.
     PT_NOTEs from the core files are currently not parsed using BFD.  */
  if (hdr->sh_type == SHT_NOTE && hdr->sh_size != 0)
    {
      bfd_byte *contents;

      if (!bfd_malloc_and_get_section (abfd, newsect, &contents))
	return false;

      elf_parse_notes (abfd, (char *) contents, hdr->sh_size,
		       hdr->sh_offset, hdr->sh_addralign);
      free (contents);
    }

  if ((newsect->flags & SEC_ALLOC) != 0)
    {
      Elf_Internal_Phdr *phdr;
      unsigned int i, nload;

      /* Some ELF linkers produce binaries with all the program header
	 p_paddr fields zero.  If we have such a binary with more than
	 one PT_LOAD header, then leave the section lma equal to vma
	 so that we don't create sections with overlapping lma.  */
      phdr = elf_tdata (abfd)->phdr;
      for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
	if (phdr->p_paddr != 0)
	  break;
	else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0)
	  ++nload;
      if (i >= elf_elfheader (abfd)->e_phnum && nload > 1)
	return true;

      phdr = elf_tdata (abfd)->phdr;
      for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
	{
	  if (((phdr->p_type == PT_LOAD
		&& (hdr->sh_flags & SHF_TLS) == 0)
	       || phdr->p_type == PT_TLS)
	      && ELF_SECTION_IN_SEGMENT (hdr, phdr))
	    {
	      if ((newsect->flags & SEC_LOAD) == 0)
		newsect->lma = (phdr->p_paddr
				+ hdr->sh_addr - phdr->p_vaddr) / opb;
	      else
		/* We used to use the same adjustment for SEC_LOAD
		   sections, but that doesn't work if the segment
		   is packed with code from multiple VMAs.
		   Instead we calculate the section LMA based on
		   the segment LMA.  It is assumed that the
		   segment will contain sections with contiguous
		   LMAs, even if the VMAs are not.  */
		newsect->lma = (phdr->p_paddr
				+ hdr->sh_offset - phdr->p_offset) / opb;

	      /* With contiguous segments, we can't tell from file
		 offsets whether a section with zero size should
		 be placed at the end of one segment or the
		 beginning of the next.  Decide based on vaddr.  */
	      if (hdr->sh_addr >= phdr->p_vaddr
		  && (hdr->sh_addr + hdr->sh_size
		      <= phdr->p_vaddr + phdr->p_memsz))
		break;
	    }
	}
    }

  /* Compress/decompress DWARF debug sections with names: .debug_*,
     .zdebug_*, .gnu.debuglto_.debug_, after the section flags is set.  */
  if ((newsect->flags & SEC_DEBUGGING) != 0
      && (newsect->flags & SEC_HAS_CONTENTS) != 0
      && (newsect->flags & SEC_ELF_OCTETS) != 0)
    {
      enum { nothing, compress, decompress } action = nothing;
      int compression_header_size;
      bfd_size_type uncompressed_size;
      unsigned int uncompressed_align_power;
      enum compression_type ch_type = ch_none;
      bool compressed
	= bfd_is_section_compressed_info (abfd, newsect,
					  &compression_header_size,
					  &uncompressed_size,
					  &uncompressed_align_power,
					  &ch_type);

      /* Should we decompress?  */
      if ((abfd->flags & BFD_DECOMPRESS) != 0 && compressed)
	action = decompress;

      /* Should we compress?  Or convert to a different compression?  */
      else if ((abfd->flags & BFD_COMPRESS) != 0
	       && newsect->size != 0
	       && compression_header_size >= 0
	       && uncompressed_size > 0)
	{
	  if (!compressed)
	    action = compress;
	  else
	    {
	      enum compression_type new_ch_type = ch_none;
	      if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
		new_ch_type = ((abfd->flags & BFD_COMPRESS_ZSTD) != 0
			       ? ch_compress_zstd : ch_compress_zlib);
	      if (new_ch_type != ch_type)
		action = compress;
	    }
	}

      if (action == compress)
	{
	  if (!bfd_init_section_compress_status (abfd, newsect))
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB: unable to compress section %s"), abfd, name);
	      return false;
	    }
	}
      else if (action == decompress)
	{
	  if (!bfd_init_section_decompress_status (abfd, newsect))
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB: unable to decompress section %s"), abfd, name);
	      return false;
	    }
#ifndef HAVE_ZSTD
	  if (newsect->compress_status == DECOMPRESS_SECTION_ZSTD)
	    {
	      _bfd_error_handler
		  /* xgettext:c-format */
		  (_ ("%pB: section %s is compressed with zstd, but BFD "
		      "is not built with zstd support"),
		   abfd, name);
	      newsect->compress_status = COMPRESS_SECTION_NONE;
	      return false;
	    }
#endif
	  if (abfd->is_linker_input
	      && name[1] == 'z')
	    {
	      /* Rename section from .zdebug_* to .debug_* so that ld
		 scripts will see this section as a debug section.  */
	      char *new_name = bfd_zdebug_name_to_debug (abfd, name);
	      if (new_name == NULL)
		return false;
	      bfd_rename_section (newsect, new_name);
	    }
	}
    }

  /* GCC uses .gnu.lto_.lto.<some_hash> as a LTO bytecode information
     section.  */
  if (startswith (name, ".gnu.lto_.lto."))
    {
      struct lto_section lsection;
      if (bfd_get_section_contents (abfd, newsect, &lsection, 0,
				    sizeof (struct lto_section)))
	abfd->lto_slim_object = lsection.slim_object;
    }

  return true;
}

const char *const bfd_elf_section_type_names[] =
{
  "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
  "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
  "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
};

/* ELF relocs are against symbols.  If we are producing relocatable
   output, and the reloc is against an external symbol, and nothing
   has given us any additional addend, the resulting reloc will also
   be against the same symbol.  In such a case, we don't want to
   change anything about the way the reloc is handled, since it will
   all be done at final link time.  Rather than put special case code
   into bfd_perform_relocation, all the reloc types use this howto
   function, or should call this function for relocatable output.  */

bfd_reloc_status_type
bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED,
		       arelent *reloc_entry,
		       asymbol *symbol,
		       void *data ATTRIBUTE_UNUSED,
		       asection *input_section,
		       bfd *output_bfd,
		       char **error_message ATTRIBUTE_UNUSED)
{
  if (output_bfd != NULL
      && (symbol->flags & BSF_SECTION_SYM) == 0
      && (! reloc_entry->howto->partial_inplace
	  || reloc_entry->addend == 0))
    {
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  /* In some cases the relocation should be treated as output section
     relative, as when linking ELF DWARF into PE COFF.  Many ELF
     targets lack section relative relocations and instead use
     ordinary absolute relocations for references between DWARF
     sections.  That is arguably a bug in those targets but it happens
     to work for the usual case of linking to non-loaded ELF debug
     sections with VMAs forced to zero.  PE COFF on the other hand
     doesn't allow a section VMA of zero.  */
  if (output_bfd == NULL
      && !reloc_entry->howto->pc_relative
      && (symbol->section->flags & SEC_DEBUGGING) != 0
      && (input_section->flags & SEC_DEBUGGING) != 0)
    reloc_entry->addend -= symbol->section->output_section->vma;

  return bfd_reloc_continue;
}

/* Returns TRUE if section A matches section B.
   Names, addresses and links may be different, but everything else
   should be the same.  */

static bool
section_match (const Elf_Internal_Shdr * a,
	       const Elf_Internal_Shdr * b)
{
  if (a->sh_type != b->sh_type
      || ((a->sh_flags ^ b->sh_flags) & ~SHF_INFO_LINK) != 0
      || a->sh_addralign != b->sh_addralign
      || a->sh_entsize != b->sh_entsize)
    return false;
  if (a->sh_type == SHT_SYMTAB
      || a->sh_type == SHT_STRTAB)
    return true;
  return a->sh_size == b->sh_size;
}

/* Find a section in OBFD that has the same characteristics
   as IHEADER.  Return the index of this section or SHN_UNDEF if
   none can be found.  Check's section HINT first, as this is likely
   to be the correct section.  */

static unsigned int
find_link (const bfd *obfd, const Elf_Internal_Shdr *iheader,
	   const unsigned int hint)
{
  Elf_Internal_Shdr ** oheaders = elf_elfsections (obfd);
  unsigned int i;

  BFD_ASSERT (iheader != NULL);

  /* See PR 20922 for a reproducer of the NULL test.  */
  if (hint < elf_numsections (obfd)
      && oheaders[hint] != NULL
      && section_match (oheaders[hint], iheader))
    return hint;

  for (i = 1; i < elf_numsections (obfd); i++)
    {
      Elf_Internal_Shdr * oheader = oheaders[i];

      if (oheader == NULL)
	continue;
      if (section_match (oheader, iheader))
	/* FIXME: Do we care if there is a potential for
	   multiple matches ?  */
	return i;
    }

  return SHN_UNDEF;
}

/* PR 19938: Attempt to set the ELF section header fields of an OS or
   Processor specific section, based upon a matching input section.
   Returns TRUE upon success, FALSE otherwise.  */

static bool
copy_special_section_fields (const bfd *ibfd,
			     bfd *obfd,
			     const Elf_Internal_Shdr *iheader,
			     Elf_Internal_Shdr *oheader,
			     const unsigned int secnum)
{
  const struct elf_backend_data *bed = get_elf_backend_data (obfd);
  const Elf_Internal_Shdr **iheaders
    = (const Elf_Internal_Shdr **) elf_elfsections (ibfd);
  bool changed = false;
  unsigned int sh_link;

  if (oheader->sh_type == SHT_NOBITS)
    {
      /* This is a feature for objcopy --only-keep-debug:
	 When a section's type is changed to NOBITS, we preserve
	 the sh_link and sh_info fields so that they can be
	 matched up with the original.

	 Note: Strictly speaking these assignments are wrong.
	 The sh_link and sh_info fields should point to the
	 relevent sections in the output BFD, which may not be in
	 the same location as they were in the input BFD.  But
	 the whole point of this action is to preserve the
	 original values of the sh_link and sh_info fields, so
	 that they can be matched up with the section headers in
	 the original file.  So strictly speaking we may be
	 creating an invalid ELF file, but it is only for a file
	 that just contains debug info and only for sections
	 without any contents.  */
      if (oheader->sh_link == 0)
	oheader->sh_link = iheader->sh_link;
      if (oheader->sh_info == 0)
	oheader->sh_info = iheader->sh_info;
      return true;
    }

  /* Allow the target a chance to decide how these fields should be set.  */
  if (bed->elf_backend_copy_special_section_fields (ibfd, obfd,
						    iheader, oheader))
    return true;

  /* We have an iheader which might match oheader, and which has non-zero
     sh_info and/or sh_link fields.  Attempt to follow those links and find
     the section in the output bfd which corresponds to the linked section
     in the input bfd.  */
  if (iheader->sh_link != SHN_UNDEF)
    {
      /* See PR 20931 for a reproducer.  */
      if (iheader->sh_link >= elf_numsections (ibfd))
	{
	  _bfd_error_handler
	    /* xgettext:c-format */
	    (_("%pB: invalid sh_link field (%d) in section number %d"),
	     ibfd, iheader->sh_link, secnum);
	  return false;
	}

      sh_link = find_link (obfd, iheaders[iheader->sh_link], iheader->sh_link);
      if (sh_link != SHN_UNDEF)
	{
	  oheader->sh_link = sh_link;
	  changed = true;
	}
      else
	/* FIXME: Should we install iheader->sh_link
	   if we could not find a match ?  */
	_bfd_error_handler
	  /* xgettext:c-format */
	  (_("%pB: failed to find link section for section %d"), obfd, secnum);
    }

  if (iheader->sh_info)
    {
      /* The sh_info field can hold arbitrary information, but if the
	 SHF_LINK_INFO flag is set then it should be interpreted as a
	 section index.  */
      if (iheader->sh_flags & SHF_INFO_LINK)
	{
	  sh_link = find_link (obfd, iheaders[iheader->sh_info],
			       iheader->sh_info);
	  if (sh_link != SHN_UNDEF)
	    oheader->sh_flags |= SHF_INFO_LINK;
	}
      else
	/* No idea what it means - just copy it.  */
	sh_link = iheader->sh_info;

      if (sh_link != SHN_UNDEF)
	{
	  oheader->sh_info = sh_link;
	  changed = true;
	}
      else
	_bfd_error_handler
	  /* xgettext:c-format */
	  (_("%pB: failed to find info section for section %d"), obfd, secnum);
    }

  return changed;
}

/* Copy the program header and other data from one object module to
   another.  */

bool
_bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
{
  const Elf_Internal_Shdr **iheaders
    = (const Elf_Internal_Shdr **) elf_elfsections (ibfd);
  Elf_Internal_Shdr **oheaders = elf_elfsections (obfd);
  const struct elf_backend_data *bed;
  unsigned int i;

  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
    || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
    return true;

  if (!elf_flags_init (obfd))
    {
      elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
      elf_flags_init (obfd) = true;
    }

  elf_gp (obfd) = elf_gp (ibfd);

  /* Also copy the EI_OSABI field.  */
  elf_elfheader (obfd)->e_ident[EI_OSABI] =
    elf_elfheader (ibfd)->e_ident[EI_OSABI];

  /* If set, copy the EI_ABIVERSION field.  */
  if (elf_elfheader (ibfd)->e_ident[EI_ABIVERSION])
    elf_elfheader (obfd)->e_ident[EI_ABIVERSION]
      = elf_elfheader (ibfd)->e_ident[EI_ABIVERSION];

  /* Copy object attributes.  */
  _bfd_elf_copy_obj_attributes (ibfd, obfd);

  if (iheaders == NULL || oheaders == NULL)
    return true;

  bed = get_elf_backend_data (obfd);

  /* Possibly copy other fields in the section header.  */
  for (i = 1; i < elf_numsections (obfd); i++)
    {
      unsigned int j;
      Elf_Internal_Shdr * oheader = oheaders[i];

      /* Ignore ordinary sections.  SHT_NOBITS sections are considered however
	 because of a special case need for generating separate debug info
	 files.  See below for more details.  */
      if (oheader == NULL
	  || (oheader->sh_type != SHT_NOBITS
	      && oheader->sh_type < SHT_LOOS))
	continue;

      /* Ignore empty sections, and sections whose
	 fields have already been initialised.  */
      if (oheader->sh_size == 0
	  || (oheader->sh_info != 0 && oheader->sh_link != 0))
	continue;

      /* Scan for the matching section in the input bfd.
	 First we try for a direct mapping between the input and
	 output sections.  */
      for (j = 1; j < elf_numsections (ibfd); j++)
	{
	  const Elf_Internal_Shdr * iheader = iheaders[j];

	  if (iheader == NULL)
	    continue;

	  if (oheader->bfd_section != NULL
	      && iheader->bfd_section != NULL
	      && iheader->bfd_section->output_section != NULL
	      && iheader->bfd_section->output_section == oheader->bfd_section)
	    {
	      /* We have found a connection from the input section to
		 the output section.  Attempt to copy the header fields.
		 If this fails then do not try any further sections -
		 there should only be a one-to-one mapping between
		 input and output.  */
	      if (!copy_special_section_fields (ibfd, obfd,
						iheader, oheader, i))
		j = elf_numsections (ibfd);
	      break;
	    }
	}

      if (j < elf_numsections (ibfd))
	continue;

      /* That failed.  So try to deduce the corresponding input section.
	 Unfortunately we cannot compare names as the output string table
	 is empty, so instead we check size, address and type.  */
      for (j = 1; j < elf_numsections (ibfd); j++)
	{
	  const Elf_Internal_Shdr * iheader = iheaders[j];

	  if (iheader == NULL)
	    continue;

	  /* Try matching fields in the input section's header.
	     Since --only-keep-debug turns all non-debug sections into
	     SHT_NOBITS sections, the output SHT_NOBITS type matches any
	     input type.  */
	  if ((oheader->sh_type == SHT_NOBITS
	       || iheader->sh_type == oheader->sh_type)
	      && (iheader->sh_flags & ~ SHF_INFO_LINK)
	      == (oheader->sh_flags & ~ SHF_INFO_LINK)
	      && iheader->sh_addralign == oheader->sh_addralign
	      && iheader->sh_entsize == oheader->sh_entsize
	      && iheader->sh_size == oheader->sh_size
	      && iheader->sh_addr == oheader->sh_addr
	      && (iheader->sh_info != oheader->sh_info
		  || iheader->sh_link != oheader->sh_link))
	    {
	      if (copy_special_section_fields (ibfd, obfd, iheader, oheader, i))
		break;
	    }
	}

      if (j == elf_numsections (ibfd) && oheader->sh_type >= SHT_LOOS)
	{
	  /* Final attempt.  Call the backend copy function
	     with a NULL input section.  */
	  (void) bed->elf_backend_copy_special_section_fields (ibfd, obfd,
							       NULL, oheader);
	}
    }

  return true;
}

static const char *
get_segment_type (unsigned int p_type)
{
  const char *pt;
  switch (p_type)
    {
    case PT_NULL: pt = "NULL"; break;
    case PT_LOAD: pt = "LOAD"; break;
    case PT_DYNAMIC: pt = "DYNAMIC"; break;
    case PT_INTERP: pt = "INTERP"; break;
    case PT_NOTE: pt = "NOTE"; break;
    case PT_SHLIB: pt = "SHLIB"; break;
    case PT_PHDR: pt = "PHDR"; break;
    case PT_TLS: pt = "TLS"; break;
    case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
    case PT_GNU_STACK: pt = "STACK"; break;
    case PT_GNU_RELRO: pt = "RELRO"; break;
    case PT_GNU_SFRAME: pt = "SFRAME"; break;
    default: pt = NULL; break;
    }
  return pt;
}

/* Print out the program headers.  */

bool
_bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
{
  FILE *f = (FILE *) farg;
  Elf_Internal_Phdr *p;
  asection *s;
  bfd_byte *dynbuf = NULL;

  p = elf_tdata (abfd)->phdr;
  if (p != NULL)
    {
      unsigned int i, c;

      fprintf (f, _("\nProgram Header:\n"));
      c = elf_elfheader (abfd)->e_phnum;
      for (i = 0; i < c; i++, p++)
	{
	  const char *pt = get_segment_type (p->p_type);
	  char buf[20];

	  if (pt == NULL)
	    {
	      sprintf (buf, "0x%lx", p->p_type);
	      pt = buf;
	    }
	  fprintf (f, "%8s off    0x", pt);
	  bfd_fprintf_vma (abfd, f, p->p_offset);
	  fprintf (f, " vaddr 0x");
	  bfd_fprintf_vma (abfd, f, p->p_vaddr);
	  fprintf (f, " paddr 0x");
	  bfd_fprintf_vma (abfd, f, p->p_paddr);
	  fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
	  fprintf (f, "         filesz 0x");
	  bfd_fprintf_vma (abfd, f, p->p_filesz);
	  fprintf (f, " memsz 0x");
	  bfd_fprintf_vma (abfd, f, p->p_memsz);
	  fprintf (f, " flags %c%c%c",
		   (p->p_flags & PF_R) != 0 ? 'r' : '-',
		   (p->p_flags & PF_W) != 0 ? 'w' : '-',
		   (p->p_flags & PF_X) != 0 ? 'x' : '-');
	  if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
	    fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
	  fprintf (f, "\n");
	}
    }

  s = bfd_get_section_by_name (abfd, ".dynamic");
  if (s != NULL && (s->flags & SEC_HAS_CONTENTS) != 0)
    {
      unsigned int elfsec;
      unsigned long shlink;
      bfd_byte *extdyn, *extdynend;
      size_t extdynsize;
      void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);

      fprintf (f, _("\nDynamic Section:\n"));

      if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
	goto error_return;

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

      extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
      swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;

      for (extdyn = dynbuf, extdynend = dynbuf + s->size;
	   (size_t) (extdynend - extdyn) >= extdynsize;
	   extdyn += extdynsize)
	{
	  Elf_Internal_Dyn dyn;
	  const char *name = "";
	  char ab[20];
	  bool stringp;
	  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

	  (*swap_dyn_in) (abfd, extdyn, &dyn);

	  if (dyn.d_tag == DT_NULL)
	    break;

	  stringp = false;
	  switch (dyn.d_tag)
	    {
	    default:
	      if (bed->elf_backend_get_target_dtag)
		name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag);

	      if (!strcmp (name, ""))
		{
		  sprintf (ab, "%#" PRIx64, (uint64_t) dyn.d_tag);
		  name = ab;
		}
	      break;

	    case DT_NEEDED: name = "NEEDED"; stringp = true; break;
	    case DT_PLTRELSZ: name = "PLTRELSZ"; break;
	    case DT_PLTGOT: name = "PLTGOT"; break;
	    case DT_HASH: name = "HASH"; break;
	    case DT_STRTAB: name = "STRTAB"; break;
	    case DT_SYMTAB: name = "SYMTAB"; break;
	    case DT_RELA: name = "RELA"; break;
	    case DT_RELASZ: name = "RELASZ"; break;
	    case DT_RELAENT: name = "RELAENT"; break;
	    case DT_STRSZ: name = "STRSZ"; break;
	    case DT_SYMENT: name = "SYMENT"; break;
	    case DT_INIT: name = "INIT"; break;
	    case DT_FINI: name = "FINI"; break;
	    case DT_SONAME: name = "SONAME"; stringp = true; break;
	    case DT_RPATH: name = "RPATH"; stringp = true; break;
	    case DT_SYMBOLIC: name = "SYMBOLIC"; break;
	    case DT_REL: name = "REL"; break;
	    case DT_RELSZ: name = "RELSZ"; break;
	    case DT_RELENT: name = "RELENT"; break;
	    case DT_RELR: name = "RELR"; break;
	    case DT_RELRSZ: name = "RELRSZ"; break;
	    case DT_RELRENT: name = "RELRENT"; break;
	    case DT_PLTREL: name = "PLTREL"; break;
	    case DT_DEBUG: name = "DEBUG"; break;
	    case DT_TEXTREL: name = "TEXTREL"; break;
	    case DT_JMPREL: name = "JMPREL"; break;
	    case DT_BIND_NOW: name = "BIND_NOW"; break;
	    case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
	    case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
	    case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
	    case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
	    case DT_RUNPATH: name = "RUNPATH"; stringp = true; break;
	    case DT_FLAGS: name = "FLAGS"; break;
	    case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
	    case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
	    case DT_CHECKSUM: name = "CHECKSUM"; break;
	    case DT_PLTPADSZ: name = "PLTPADSZ"; break;
	    case DT_MOVEENT: name = "MOVEENT"; break;
	    case DT_MOVESZ: name = "MOVESZ"; break;
	    case DT_FEATURE: name = "FEATURE"; break;
	    case DT_POSFLAG_1: name = "POSFLAG_1"; break;
	    case DT_SYMINSZ: name = "SYMINSZ"; break;
	    case DT_SYMINENT: name = "SYMINENT"; break;
	    case DT_CONFIG: name = "CONFIG"; stringp = true; break;
	    case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = true; break;
	    case DT_AUDIT: name = "AUDIT"; stringp = true; break;
	    case DT_PLTPAD: name = "PLTPAD"; break;
	    case DT_MOVETAB: name = "MOVETAB"; break;
	    case DT_SYMINFO: name = "SYMINFO"; break;
	    case DT_RELACOUNT: name = "RELACOUNT"; break;
	    case DT_RELCOUNT: name = "RELCOUNT"; break;
	    case DT_FLAGS_1: name = "FLAGS_1"; break;
	    case DT_VERSYM: name = "VERSYM"; break;
	    case DT_VERDEF: name = "VERDEF"; break;
	    case DT_VERDEFNUM: name = "VERDEFNUM"; break;
	    case DT_VERNEED: name = "VERNEED"; break;
	    case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
	    case DT_AUXILIARY: name = "AUXILIARY"; stringp = true; break;
	    case DT_USED: name = "USED"; break;
	    case DT_FILTER: name = "FILTER"; stringp = true; break;
	    case DT_GNU_HASH: name = "GNU_HASH"; break;
	    }

	  fprintf (f, "  %-20s ", name);
	  if (! stringp)
	    {
	      fprintf (f, "0x");
	      bfd_fprintf_vma (abfd, f, dyn.d_un.d_val);
	    }
	  else
	    {
	      const char *string;
	      unsigned int tagv = dyn.d_un.d_val;

	      string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
	      if (string == NULL)
		goto error_return;
	      fprintf (f, "%s", string);
	    }
	  fprintf (f, "\n");
	}

      free (dynbuf);
      dynbuf = NULL;
    }

  if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
      || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
    {
      if (! _bfd_elf_slurp_version_tables (abfd, false))
	return false;
    }

  if (elf_dynverdef (abfd) != 0)
    {
      Elf_Internal_Verdef *t;

      fprintf (f, _("\nVersion definitions:\n"));
      for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
	{
	  fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
		   t->vd_flags, t->vd_hash,
		   t->vd_nodename ? t->vd_nodename : "<corrupt>");
	  if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL)
	    {
	      Elf_Internal_Verdaux *a;

	      fprintf (f, "\t");
	      for (a = t->vd_auxptr->vda_nextptr;
		   a != NULL;
		   a = a->vda_nextptr)
		fprintf (f, "%s ",
			 a->vda_nodename ? a->vda_nodename : "<corrupt>");
	      fprintf (f, "\n");
	    }
	}
    }

  if (elf_dynverref (abfd) != 0)
    {
      Elf_Internal_Verneed *t;

      fprintf (f, _("\nVersion References:\n"));
      for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
	{
	  Elf_Internal_Vernaux *a;

	  fprintf (f, _("  required from %s:\n"),
		   t->vn_filename ? t->vn_filename : "<corrupt>");
	  for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
	    fprintf (f, "    0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
		     a->vna_flags, a->vna_other,
		     a->vna_nodename ? a->vna_nodename : "<corrupt>");
	}
    }

  return true;

 error_return:
  free (dynbuf);
  return false;
}

/* Get version name.  If BASE_P is TRUE, return "Base" for VER_FLG_BASE
   and return symbol version for symbol version itself.   */

const char *
_bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol,
				    bool base_p,
				    bool *hidden)
{
  const char *version_string = NULL;
  if (elf_dynversym (abfd) != 0
      && (elf_dynverdef (abfd) != 0 || elf_dynverref (abfd) != 0))
    {
      unsigned int vernum = ((elf_symbol_type *) symbol)->version;

      *hidden = (vernum & VERSYM_HIDDEN) != 0;
      vernum &= VERSYM_VERSION;

      if (vernum == 0)
	version_string = "";
      else if (vernum == 1
	       && (vernum > elf_tdata (abfd)->cverdefs
		   || (elf_tdata (abfd)->verdef[0].vd_flags
		       == VER_FLG_BASE)))
	version_string = base_p ? "Base" : "";
      else if (vernum <= elf_tdata (abfd)->cverdefs)
	{
	  const char *nodename
	    = elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
	  version_string = "";
	  if (base_p
	      || nodename == NULL
	      || symbol->name == NULL
	      || strcmp (symbol->name, nodename) != 0)
	    version_string = nodename;
	}
      else
	{
	  Elf_Internal_Verneed *t;

	  version_string = _("<corrupt>");
	  for (t = elf_tdata (abfd)->verref;
	       t != NULL;
	       t = t->vn_nextref)
	    {
	      Elf_Internal_Vernaux *a;

	      for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
		{
		  if (a->vna_other == vernum)
		    {
		      *hidden = true;
		      version_string = a->vna_nodename;
		      break;
		    }
		}
	    }
	}
    }
  return version_string;
}

/* Display ELF-specific fields of a symbol.  */

void
bfd_elf_print_symbol (bfd *abfd,
		      void *filep,
		      asymbol *symbol,
		      bfd_print_symbol_type how)
{
  FILE *file = (FILE *) filep;
  switch (how)
    {
    case bfd_print_symbol_name:
      fprintf (file, "%s", symbol->name);
      break;
    case bfd_print_symbol_more:
      fprintf (file, "elf ");
      bfd_fprintf_vma (abfd, file, symbol->value);
      fprintf (file, " %x", symbol->flags);
      break;
    case bfd_print_symbol_all:
      {
	const char *section_name;
	const char *name = NULL;
	const struct elf_backend_data *bed;
	unsigned char st_other;
	bfd_vma val;
	const char *version_string;
	bool hidden;

	section_name = symbol->section ? symbol->section->name : "(*none*)";

	bed = get_elf_backend_data (abfd);
	if (bed->elf_backend_print_symbol_all)
	  name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);

	if (name == NULL)
	  {
	    name = symbol->name;
	    bfd_print_symbol_vandf (abfd, file, symbol);
	  }

	fprintf (file, " %s\t", section_name);
	/* Print the "other" value for a symbol.  For common symbols,
	   we've already printed the size; now print the alignment.
	   For other symbols, we have no specified alignment, and
	   we've printed the address; now print the size.  */
	if (symbol->section && bfd_is_com_section (symbol->section))
	  val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
	else
	  val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
	bfd_fprintf_vma (abfd, file, val);

	/* If we have version information, print it.  */
	version_string = _bfd_elf_get_symbol_version_string (abfd,
							     symbol,
							     true,
							     &hidden);
	if (version_string)
	  {
	    if (!hidden)
	      fprintf (file, "  %-11s", version_string);
	    else
	      {
		int i;

		fprintf (file, " (%s)", version_string);
		for (i = 10 - strlen (version_string); i > 0; --i)
		  putc (' ', file);
	      }
	  }

	/* If the st_other field is not zero, print it.  */
	st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;

	switch (st_other)
	  {
	  case 0: break;
	  case STV_INTERNAL:  fprintf (file, " .internal");  break;
	  case STV_HIDDEN:    fprintf (file, " .hidden");    break;
	  case STV_PROTECTED: fprintf (file, " .protected"); break;
	  default:
	    /* Some other non-defined flags are also present, so print
	       everything hex.  */
	    fprintf (file, " 0x%02x", (unsigned int) st_other);
	  }

	fprintf (file, " %s", name);
      }
      break;
    }
}

/* ELF .o/exec file reading */

/* Create a new bfd section from an ELF section header.  */

bool
bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
{
  Elf_Internal_Shdr *hdr;
  Elf_Internal_Ehdr *ehdr;
  const struct elf_backend_data *bed;
  const char *name;
  bool ret = true;

  if (shindex >= elf_numsections (abfd))
    return false;

  /* PR17512: A corrupt ELF binary might contain a loop of sections via
     sh_link or sh_info.  Detect this here, by refusing to load a
     section that we are already in the process of loading.  */
  if (elf_tdata (abfd)->being_created[shindex])
    {
      _bfd_error_handler
	(_("%pB: warning: loop in section dependencies detected"), abfd);
      return false;
    }
  elf_tdata (abfd)->being_created[shindex] = true;

  hdr = elf_elfsections (abfd)[shindex];
  ehdr = elf_elfheader (abfd);
  name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx,
					  hdr->sh_name);
  if (name == NULL)
    goto fail;

  bed = get_elf_backend_data (abfd);
  switch (hdr->sh_type)
    {
    case SHT_NULL:
      /* Inactive section. Throw it away.  */
      goto success;

    case SHT_PROGBITS:		/* Normal section with contents.  */
    case SHT_NOBITS:		/* .bss section.  */
    case SHT_HASH:		/* .hash section.  */
    case SHT_NOTE:		/* .note section.  */
    case SHT_INIT_ARRAY:	/* .init_array section.  */
    case SHT_FINI_ARRAY:	/* .fini_array section.  */
    case SHT_PREINIT_ARRAY:	/* .preinit_array section.  */
    case SHT_GNU_LIBLIST:	/* .gnu.liblist section.  */
    case SHT_GNU_HASH:		/* .gnu.hash section.  */
      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
      goto success;

    case SHT_DYNAMIC:	/* Dynamic linking information.  */
      if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
	goto fail;

      if (hdr->sh_link > elf_numsections (abfd))
	{
	  /* PR 10478: Accept Solaris binaries with a sh_link field
	     set to SHN_BEFORE (LORESERVE) or SHN_AFTER (LORESERVE+1).  */
	  switch (bfd_get_arch (abfd))
	    {
	    case bfd_arch_i386:
	    case bfd_arch_sparc:
	      if (hdr->sh_link == (SHN_LORESERVE & 0xffff)
		  || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff))
		break;
	      /* Otherwise fall through.  */
	    default:
	      goto fail;
	    }
	}
      else if (elf_elfsections (abfd)[hdr->sh_link] == NULL)
	goto fail;
      else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
	{
	  Elf_Internal_Shdr *dynsymhdr;

	  /* The shared libraries distributed with hpux11 have a bogus
	     sh_link field for the ".dynamic" section.  Find the
	     string table for the ".dynsym" section instead.  */
	  if (elf_dynsymtab (abfd) != 0)
	    {
	      dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
	      hdr->sh_link = dynsymhdr->sh_link;
	    }
	  else
	    {
	      unsigned int i, num_sec;

	      num_sec = elf_numsections (abfd);
	      for (i = 1; i < num_sec; i++)
		{
		  dynsymhdr = elf_elfsections (abfd)[i];
		  if (dynsymhdr->sh_type == SHT_DYNSYM)
		    {
		      hdr->sh_link = dynsymhdr->sh_link;
		      break;
		    }
		}
	    }
	}
      goto success;

    case SHT_SYMTAB:		/* A symbol table.  */
      if (elf_onesymtab (abfd) == shindex)
	goto success;

      if (hdr->sh_entsize != bed->s->sizeof_sym)
	goto fail;

      if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
	{
	  if (hdr->sh_size != 0)
	    goto fail;
	  /* Some assemblers erroneously set sh_info to one with a
	     zero sh_size.  ld sees this as a global symbol count
	     of (unsigned) -1.  Fix it here.  */
	  hdr->sh_info = 0;
	  goto success;
	}

      /* PR 18854: A binary might contain more than one symbol table.
	 Unusual, but possible.  Warn, but continue.  */
      if (elf_onesymtab (abfd) != 0)
	{
	  _bfd_error_handler
	    /* xgettext:c-format */
	    (_("%pB: warning: multiple symbol tables detected"
	       " - ignoring the table in section %u"),
	     abfd, shindex);
	  goto success;
	}
      elf_onesymtab (abfd) = shindex;
      elf_symtab_hdr (abfd) = *hdr;
      elf_elfsections (abfd)[shindex] = hdr = & elf_symtab_hdr (abfd);
      abfd->flags |= HAS_SYMS;

      /* Sometimes a shared object will map in the symbol table.  If
	 SHF_ALLOC is set, and this is a shared object, then we also
	 treat this section as a BFD section.  We can not base the
	 decision purely on SHF_ALLOC, because that flag is sometimes
	 set in a relocatable object file, which would confuse the
	 linker.  */
      if ((hdr->sh_flags & SHF_ALLOC) != 0
	  && (abfd->flags & DYNAMIC) != 0
	  && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name,
						shindex))
	goto fail;

      /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we
	 can't read symbols without that section loaded as well.  It
	 is most likely specified by the next section header.  */
      {
	elf_section_list * entry;
	unsigned int i, num_sec;

	for (entry = elf_symtab_shndx_list (abfd); entry; entry = entry->next)
	  if (entry->hdr.sh_link == shindex)
	    goto success;

	num_sec = elf_numsections (abfd);
	for (i = shindex + 1; i < num_sec; i++)
	  {
	    Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];

	    if (hdr2->sh_type == SHT_SYMTAB_SHNDX
		&& hdr2->sh_link == shindex)
	      break;
	  }

	if (i == num_sec)
	  for (i = 1; i < shindex; i++)
	    {
	      Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];

	      if (hdr2->sh_type == SHT_SYMTAB_SHNDX
		  && hdr2->sh_link == shindex)
		break;
	    }

	if (i != shindex)
	  ret = bfd_section_from_shdr (abfd, i);
	/* else FIXME: we have failed to find the symbol table.
	   Should we issue an error?  */
	goto success;
      }

    case SHT_DYNSYM:		/* A dynamic symbol table.  */
      if (elf_dynsymtab (abfd) == shindex)
	goto success;

      if (hdr->sh_entsize != bed->s->sizeof_sym)
	goto fail;

      if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
	{
	  if (hdr->sh_size != 0)
	    goto fail;

	  /* Some linkers erroneously set sh_info to one with a
	     zero sh_size.  ld sees this as a global symbol count
	     of (unsigned) -1.  Fix it here.  */
	  hdr->sh_info = 0;
	  goto success;
	}

      /* PR 18854: A binary might contain more than one dynamic symbol table.
	 Unusual, but possible.  Warn, but continue.  */
      if (elf_dynsymtab (abfd) != 0)
	{
	  _bfd_error_handler
	    /* xgettext:c-format */
	    (_("%pB: warning: multiple dynamic symbol tables detected"
	       " - ignoring the table in section %u"),
	     abfd, shindex);
	  goto success;
	}
      elf_dynsymtab (abfd) = shindex;
      elf_tdata (abfd)->dynsymtab_hdr = *hdr;
      elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
      abfd->flags |= HAS_SYMS;

      /* Besides being a symbol table, we also treat this as a regular
	 section, so that objcopy can handle it.  */
      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
      goto success;

    case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections.  */
      {
	elf_section_list * entry;

	for (entry = elf_symtab_shndx_list (abfd); entry; entry = entry->next)
	  if (entry->ndx == shindex)
	    goto success;

	entry = bfd_alloc (abfd, sizeof (*entry));
	if (entry == NULL)
	  goto fail;
	entry->ndx = shindex;
	entry->hdr = * hdr;
	entry->next = elf_symtab_shndx_list (abfd);
	elf_symtab_shndx_list (abfd) = entry;
	elf_elfsections (abfd)[shindex] = & entry->hdr;
	goto success;
      }

    case SHT_STRTAB:		/* A string table.  */
      if (hdr->bfd_section != NULL)
	goto success;

      if (ehdr->e_shstrndx == shindex)
	{
	  elf_tdata (abfd)->shstrtab_hdr = *hdr;
	  elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
	  goto success;
	}

      if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex)
	{
	symtab_strtab:
	  elf_tdata (abfd)->strtab_hdr = *hdr;
	  elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr;
	  goto success;
	}

      if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex)
	{
	dynsymtab_strtab:
	  elf_tdata (abfd)->dynstrtab_hdr = *hdr;
	  hdr = &elf_tdata (abfd)->dynstrtab_hdr;
	  elf_elfsections (abfd)[shindex] = hdr;
	  /* We also treat this as a regular section, so that objcopy
	     can handle it.  */
	  ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name,
						 shindex);
	  goto success;
	}

      /* If the string table isn't one of the above, then treat it as a
	 regular section.  We need to scan all the headers to be sure,
	 just in case this strtab section appeared before the above.  */
      if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0)
	{
	  unsigned int i, num_sec;

	  num_sec = elf_numsections (abfd);
	  for (i = 1; i < num_sec; i++)
	    {
	      Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
	      if (hdr2->sh_link == shindex)
		{
		  /* Prevent endless recursion on broken objects.  */
		  if (i == shindex)
		    goto fail;
		  if (! bfd_section_from_shdr (abfd, i))
		    goto fail;
		  if (elf_onesymtab (abfd) == i)
		    goto symtab_strtab;
		  if (elf_dynsymtab (abfd) == i)
		    goto dynsymtab_strtab;
		}
	    }
	}
      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
      goto success;

    case SHT_REL:
    case SHT_RELA:
    case SHT_RELR:
      /* *These* do a lot of work -- but build no sections!  */
      {
	asection *target_sect;
	Elf_Internal_Shdr *hdr2, **p_hdr;
	unsigned int num_sec = elf_numsections (abfd);
	struct bfd_elf_section_data *esdt;
	bfd_size_type size;

	if (hdr->sh_type == SHT_REL)
	  size = bed->s->sizeof_rel;
	else if (hdr->sh_type == SHT_RELA)
	  size = bed->s->sizeof_rela;
	else
	  size = bed->s->arch_size / 8;
	if (hdr->sh_entsize != size)
	  goto fail;

	/* Check for a bogus link to avoid crashing.  */
	if (hdr->sh_link >= num_sec)
	  {
	    _bfd_error_handler
	      /* xgettext:c-format */
	      (_("%pB: invalid link %u for reloc section %s (index %u)"),
	       abfd, hdr->sh_link, name, shindex);
	    ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
	    goto success;
	  }

	/* Get the symbol table.  */
	if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
	     || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM)
	    && ! bfd_section_from_shdr (abfd, hdr->sh_link))
	  goto fail;

	/* If this is an alloc section in an executable or shared
	   library, or the reloc section does not use the main symbol
	   table we don't treat it as a reloc section.  BFD can't
	   adequately represent such a section, so at least for now,
	   we don't try.  We just present it as a normal section.  We
	   also can't use it as a reloc section if it points to the
	   null section, an invalid section, another reloc section, or
	   its sh_link points to the null section.  */
	if (((abfd->flags & (DYNAMIC | EXEC_P)) != 0
	     && (hdr->sh_flags & SHF_ALLOC) != 0)
	    || hdr->sh_type == SHT_RELR
	    || hdr->sh_link == SHN_UNDEF
	    || hdr->sh_link != elf_onesymtab (abfd)
	    || hdr->sh_info == SHN_UNDEF
	    || hdr->sh_info >= num_sec
	    || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
	    || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA)
	  {
	    ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
	    goto success;
	  }

	if (! bfd_section_from_shdr (abfd, hdr->sh_info))
	  goto fail;

	target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
	if (target_sect == NULL)
	  goto fail;

	esdt = elf_section_data (target_sect);
	if (hdr->sh_type == SHT_RELA)
	  p_hdr = &esdt->rela.hdr;
	else
	  p_hdr = &esdt->rel.hdr;

	/* PR 17512: file: 0b4f81b7.
	   Also see PR 24456, for a file which deliberately has two reloc
	   sections.  */
	if (*p_hdr != NULL)
	  {
	    if (!bed->init_secondary_reloc_section (abfd, hdr, name, shindex))
	      {
		_bfd_error_handler
		  /* xgettext:c-format */
		  (_("%pB: warning: secondary relocation section '%s' "
		     "for section %pA found - ignoring"),
		   abfd, name, target_sect);
	      }
	    else
	      esdt->has_secondary_relocs = true;
	    goto success;
	  }

	hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, sizeof (*hdr2));
	if (hdr2 == NULL)
	  goto fail;
	*hdr2 = *hdr;
	*p_hdr = hdr2;
	elf_elfsections (abfd)[shindex] = hdr2;
	target_sect->reloc_count += (NUM_SHDR_ENTRIES (hdr)
				     * bed->s->int_rels_per_ext_rel);
	target_sect->flags |= SEC_RELOC;
	target_sect->relocation = NULL;
	target_sect->rel_filepos = hdr->sh_offset;
	/* In the section to which the relocations apply, mark whether
	   its relocations are of the REL or RELA variety.  */
	if (hdr->sh_size != 0)
	  {
	    if (hdr->sh_type == SHT_RELA)
	      target_sect->use_rela_p = 1;
	  }
	abfd->flags |= HAS_RELOC;
	goto success;
      }

    case SHT_GNU_verdef:
      if (hdr->sh_info != 0)
	elf_dynverdef (abfd) = shindex;
      elf_tdata (abfd)->dynverdef_hdr = *hdr;
      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
      goto success;

    case SHT_GNU_versym:
      if (hdr->sh_entsize != sizeof (Elf_External_Versym))
	goto fail;

      elf_dynversym (abfd) = shindex;
      elf_tdata (abfd)->dynversym_hdr = *hdr;
      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
      goto success;

    case SHT_GNU_verneed:
      if (hdr->sh_info != 0)
	elf_dynverref (abfd) = shindex;
      elf_tdata (abfd)->dynverref_hdr = *hdr;
      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
      goto success;

    case SHT_SHLIB:
      goto success;

    case SHT_GROUP:
      if (! IS_VALID_GROUP_SECTION_HEADER (hdr, GRP_ENTRY_SIZE))
	goto fail;

      if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
	goto fail;

      goto success;

    default:
      /* Possibly an attributes section.  */
      if (hdr->sh_type == SHT_GNU_ATTRIBUTES
	  || hdr->sh_type == bed->obj_attrs_section_type)
	{
	  if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
	    goto fail;
	  _bfd_elf_parse_attributes (abfd, hdr);
	  goto success;
	}

      /* Check for any processor-specific section types.  */
      if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex))
	goto success;

      if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER)
	{
	  if ((hdr->sh_flags & SHF_ALLOC) != 0)
	    /* FIXME: How to properly handle allocated section reserved
	       for applications?  */
	    _bfd_error_handler
	      /* xgettext:c-format */
	      (_("%pB: unknown type [%#x] section `%s'"),
	       abfd, hdr->sh_type, name);
	  else
	    {
	      /* Allow sections reserved for applications.  */
	      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
	      goto success;
	    }
	}
      else if (hdr->sh_type >= SHT_LOPROC
	       && hdr->sh_type <= SHT_HIPROC)
	/* FIXME: We should handle this section.  */
	_bfd_error_handler
	  /* xgettext:c-format */
	  (_("%pB: unknown type [%#x] section `%s'"),
	   abfd, hdr->sh_type, name);
      else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS)
	{
	  /* Unrecognised OS-specific sections.  */
	  if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0)
	    /* SHF_OS_NONCONFORMING indicates that special knowledge is
	       required to correctly process the section and the file should
	       be rejected with an error message.  */
	    _bfd_error_handler
	      /* xgettext:c-format */
	      (_("%pB: unknown type [%#x] section `%s'"),
	       abfd, hdr->sh_type, name);
	  else
	    {
	      /* Otherwise it should be processed.  */
	      ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
	      goto success;
	    }
	}
      else
	/* FIXME: We should handle this section.  */
	_bfd_error_handler
	  /* xgettext:c-format */
	  (_("%pB: unknown type [%#x] section `%s'"),
	   abfd, hdr->sh_type, name);

      goto fail;
    }

 fail:
  ret = false;
 success:
  elf_tdata (abfd)->being_created[shindex] = false;
  return ret;
}

/* Return the local symbol specified by ABFD, R_SYMNDX.  */

Elf_Internal_Sym *
bfd_sym_from_r_symndx (struct sym_cache *cache,
		       bfd *abfd,
		       unsigned long r_symndx)
{
  unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;

  if (cache->abfd != abfd || cache->indx[ent] != r_symndx)
    {
      Elf_Internal_Shdr *symtab_hdr;
      unsigned char esym[sizeof (Elf64_External_Sym)];
      Elf_External_Sym_Shndx eshndx;

      symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
      if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
				&cache->sym[ent], esym, &eshndx) == NULL)
	return NULL;

      if (cache->abfd != abfd)
	{
	  memset (cache->indx, -1, sizeof (cache->indx));
	  cache->abfd = abfd;
	}
      cache->indx[ent] = r_symndx;
    }

  return &cache->sym[ent];
}

/* Given an ELF section number, retrieve the corresponding BFD
   section.  */

asection *
bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index)
{
  if (sec_index >= elf_numsections (abfd))
    return NULL;
  return elf_elfsections (abfd)[sec_index]->bfd_section;
}

static const struct bfd_elf_special_section special_sections_b[] =
{
  { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE },
  { NULL,		    0,	0, 0,		 0 }
};

static const struct bfd_elf_special_section special_sections_c[] =
{
  { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".ctf"),	0, SHT_PROGBITS,    0 },
  { NULL,			0, 0, 0,	    0 }
};

static const struct bfd_elf_special_section special_sections_d[] =
{
  { STRING_COMMA_LEN (".data"),		-2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".data1"),	 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
  /* There are more DWARF sections than these, but they needn't be added here
     unless you have to cope with broken compilers that don't emit section
     attributes or you want to help the user writing assembler.  */
  { STRING_COMMA_LEN (".debug"),	 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".debug_line"),	 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".debug_info"),	 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".debug_abbrev"),	 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".dynamic"),	 0, SHT_DYNAMIC,  SHF_ALLOC },
  { STRING_COMMA_LEN (".dynstr"),	 0, SHT_STRTAB,	  SHF_ALLOC },
  { STRING_COMMA_LEN (".dynsym"),	 0, SHT_DYNSYM,	  SHF_ALLOC },
  { NULL,		       0,	 0, 0,		  0 }
};

static const struct bfd_elf_special_section special_sections_f[] =
{
  { STRING_COMMA_LEN (".fini"),	       0, SHT_PROGBITS,	  SHF_ALLOC + SHF_EXECINSTR },
  { STRING_COMMA_LEN (".fini_array"), -2, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
  { NULL,			   0 , 0, 0,		  0 }
};

static const struct bfd_elf_special_section special_sections_g[] =
{
  { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS,      SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".gnu.linkonce.n"), -2, SHT_NOBITS,      SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".gnu.linkonce.p"), -2, SHT_PROGBITS,    SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".gnu.lto_"),	  -1, SHT_PROGBITS,    SHF_EXCLUDE },
  { STRING_COMMA_LEN (".got"),		   0, SHT_PROGBITS,    SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".gnu.version"),	   0, SHT_GNU_versym,  0 },
  { STRING_COMMA_LEN (".gnu.version_d"),   0, SHT_GNU_verdef,  0 },
  { STRING_COMMA_LEN (".gnu.version_r"),   0, SHT_GNU_verneed, 0 },
  { STRING_COMMA_LEN (".gnu.liblist"),	   0, SHT_GNU_LIBLIST, SHF_ALLOC },
  { STRING_COMMA_LEN (".gnu.conflict"),	   0, SHT_RELA,	       SHF_ALLOC },
  { STRING_COMMA_LEN (".gnu.hash"),	   0, SHT_GNU_HASH,    SHF_ALLOC },
  { NULL,			 0,	   0, 0,	       0 }
};

static const struct bfd_elf_special_section special_sections_h[] =
{
  { STRING_COMMA_LEN (".hash"), 0, SHT_HASH,	 SHF_ALLOC },
  { NULL,		     0, 0, 0,		 0 }
};

static const struct bfd_elf_special_section special_sections_i[] =
{
  { STRING_COMMA_LEN (".init"),	       0, SHT_PROGBITS,	  SHF_ALLOC + SHF_EXECINSTR },
  { STRING_COMMA_LEN (".init_array"), -2, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".interp"),      0, SHT_PROGBITS,	  0 },
  { NULL,		       0,      0, 0,		  0 }
};

static const struct bfd_elf_special_section special_sections_l[] =
{
  { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 },
  { NULL,		     0, 0, 0,		 0 }
};

static const struct bfd_elf_special_section special_sections_n[] =
{
  { STRING_COMMA_LEN (".noinit"),	 -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".note"),		 -1, SHT_NOTE,	   0 },
  { NULL,		     0,		  0, 0,		   0 }
};

static const struct bfd_elf_special_section special_sections_p[] =
{
  { STRING_COMMA_LEN (".persistent.bss"), 0, SHT_NOBITS,	SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".persistent"),	 -2, SHT_PROGBITS,	SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".preinit_array"), -2, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
  { STRING_COMMA_LEN (".plt"),		  0, SHT_PROGBITS,	SHF_ALLOC + SHF_EXECINSTR },
  { NULL,		    0,		  0, 0,			0 }
};

static const struct bfd_elf_special_section special_sections_r[] =
{
  { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC },
  { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC },
  { STRING_COMMA_LEN (".relr.dyn"), 0, SHT_RELR, SHF_ALLOC },
  { STRING_COMMA_LEN (".rela"),	  -1, SHT_RELA,	    0 },
  { STRING_COMMA_LEN (".rel"),	  -1, SHT_REL,	    0 },
  { NULL,		    0,	   0, 0,	    0 }
};

static const struct bfd_elf_special_section special_sections_s[] =
{
  { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 },
  { STRING_COMMA_LEN (".strtab"),   0, SHT_STRTAB, 0 },
  { STRING_COMMA_LEN (".symtab"),   0, SHT_SYMTAB, 0 },
  /* See struct bfd_elf_special_section declaration for the semantics of
     this special case where .prefix_length != strlen (.prefix).  */
  { ".stabstr",			5,  3, SHT_STRTAB, 0 },
  { NULL,			0,  0, 0,	   0 }
};

static const struct bfd_elf_special_section special_sections_t[] =
{
  { STRING_COMMA_LEN (".text"),	 -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
  { STRING_COMMA_LEN (".tbss"),	 -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_TLS },
  { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
  { NULL,		      0,  0, 0,		   0 }
};

static const struct bfd_elf_special_section special_sections_z[] =
{
  { STRING_COMMA_LEN (".zdebug_line"),	  0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".zdebug_info"),	  0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".zdebug_abbrev"),  0, SHT_PROGBITS, 0 },
  { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 },
  { NULL,		      0,  0, 0,		   0 }
};

static const struct bfd_elf_special_section * const special_sections[] =
{
  special_sections_b,		/* 'b' */
  special_sections_c,		/* 'c' */
  special_sections_d,		/* 'd' */
  NULL,				/* 'e' */
  special_sections_f,		/* 'f' */
  special_sections_g,		/* 'g' */
  special_sections_h,		/* 'h' */
  special_sections_i,		/* 'i' */
  NULL,				/* 'j' */
  NULL,				/* 'k' */
  special_sections_l,		/* 'l' */
  NULL,				/* 'm' */
  special_sections_n,		/* 'n' */
  NULL,				/* 'o' */
  special_sections_p,		/* 'p' */
  NULL,				/* 'q' */
  special_sections_r,		/* 'r' */
  special_sections_s,		/* 's' */
  special_sections_t,		/* 't' */
  NULL,				/* 'u' */
  NULL,				/* 'v' */
  NULL,				/* 'w' */
  NULL,				/* 'x' */
  NULL,				/* 'y' */
  special_sections_z		/* 'z' */
};

const struct bfd_elf_special_section *
_bfd_elf_get_special_section (const char *name,
			      const struct bfd_elf_special_section *spec,
			      unsigned int rela)
{
  int i;
  int len;

  len = strlen (name);

  for (i = 0; spec[i].prefix != NULL; i++)
    {
      int suffix_len;
      int prefix_len = spec[i].prefix_length;

      if (len < prefix_len)
	continue;
      if (memcmp (name, spec[i].prefix, prefix_len) != 0)
	continue;

      suffix_len = spec[i].suffix_length;
      if (suffix_len <= 0)
	{
	  if (name[prefix_len] != 0)
	    {
	      if (suffix_len == 0)
		continue;
	      if (name[prefix_len] != '.'
		  && (suffix_len == -2
		      || (rela && spec[i].type == SHT_REL)))
		continue;
	    }
	}
      else
	{
	  if (len < prefix_len + suffix_len)
	    continue;
	  if (memcmp (name + len - suffix_len,
		      spec[i].prefix + prefix_len,
		      suffix_len) != 0)
	    continue;
	}
      return &spec[i];
    }

  return NULL;
}

const struct bfd_elf_special_section *
_bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec)
{
  int i;
  const struct bfd_elf_special_section *spec;
  const struct elf_backend_data *bed;

  /* See if this is one of the special sections.  */
  if (sec->name == NULL)
    return NULL;

  bed = get_elf_backend_data (abfd);
  spec = bed->special_sections;
  if (spec)
    {
      spec = _bfd_elf_get_special_section (sec->name,
					   bed->special_sections,
					   sec->use_rela_p);
      if (spec != NULL)
	return spec;
    }

  if (sec->name[0] != '.')
    return NULL;

  i = sec->name[1] - 'b';
  if (i < 0 || i > 'z' - 'b')
    return NULL;

  spec = special_sections[i];

  if (spec == NULL)
    return NULL;

  return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p);
}

bool
_bfd_elf_new_section_hook (bfd *abfd, asection *sec)
{
  struct bfd_elf_section_data *sdata;
  const struct elf_backend_data *bed;
  const struct bfd_elf_special_section *ssect;

  sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
  if (sdata == NULL)
    {
      sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd,
							  sizeof (*sdata));
      if (sdata == NULL)
	return false;
      sec->used_by_bfd = sdata;
    }

  /* Indicate whether or not this section should use RELA relocations.  */
  bed = get_elf_backend_data (abfd);
  sec->use_rela_p = bed->default_use_rela_p;

  /* Set up ELF section type and flags for newly created sections, if
     there is an ABI mandated section.  */
  ssect = (*bed->get_sec_type_attr) (abfd, sec);
  if (ssect != NULL)
    {
      elf_section_type (sec) = ssect->type;
      elf_section_flags (sec) = ssect->attr;
    }

  return _bfd_generic_new_section_hook (abfd, sec);
}

/* Create a new bfd section from an ELF program header.

   Since program segments have no names, we generate a synthetic name
   of the form segment<NUM>, where NUM is generally the index in the
   program header table.  For segments that are split (see below) we
   generate the names segment<NUM>a and segment<NUM>b.

   Note that some program segments may have a file size that is different than
   (less than) the memory size.  All this means is that at execution the
   system must allocate the amount of memory specified by the memory size,
   but only initialize it with the first "file size" bytes read from the
   file.  This would occur for example, with program segments consisting
   of combined data+bss.

   To handle the above situation, this routine generates TWO bfd sections
   for the single program segment.  The first has the length specified by
   the file size of the segment, and the second has the length specified
   by the difference between the two sizes.  In effect, the segment is split
   into its initialized and uninitialized parts.  */

bool
_bfd_elf_make_section_from_phdr (bfd *abfd,
				 Elf_Internal_Phdr *hdr,
				 int hdr_index,
				 const char *type_name)
{
  asection *newsect;
  char *name;
  char namebuf[64];
  size_t len;
  int split;
  unsigned int opb = bfd_octets_per_byte (abfd, NULL);

  split = ((hdr->p_memsz > 0)
	    && (hdr->p_filesz > 0)
	    && (hdr->p_memsz > hdr->p_filesz));

  if (hdr->p_filesz > 0)
    {
      sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : "");
      len = strlen (namebuf) + 1;
      name = (char *) bfd_alloc (abfd, len);
      if (!name)
	return false;
      memcpy (name, namebuf, len);
      newsect = bfd_make_section (abfd, name);
      if (newsect == NULL)
	return false;
      newsect->vma = hdr->p_vaddr / opb;
      newsect->lma = hdr->p_paddr / opb;
      newsect->size = hdr->p_filesz;
      newsect->filepos = hdr->p_offset;
      newsect->flags |= SEC_HAS_CONTENTS;
      newsect->alignment_power = bfd_log2 (hdr->p_align);
      if (hdr->p_type == PT_LOAD)
	{
	  newsect->flags |= SEC_ALLOC;
	  newsect->flags |= SEC_LOAD;
	  if (hdr->p_flags & PF_X)
	    {
	      /* FIXME: all we known is that it has execute PERMISSION,
		 may be data.  */
	      newsect->flags |= SEC_CODE;
	    }
	}
      if (!(hdr->p_flags & PF_W))
	{
	  newsect->flags |= SEC_READONLY;
	}
    }

  if (hdr->p_memsz > hdr->p_filesz)
    {
      bfd_vma align;

      sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : "");
      len = strlen (namebuf) + 1;
      name = (char *) bfd_alloc (abfd, len);
      if (!name)
	return false;
      memcpy (name, namebuf, len);
      newsect = bfd_make_section (abfd, name);
      if (newsect == NULL)
	return false;
      newsect->vma = (hdr->p_vaddr + hdr->p_filesz) / opb;
      newsect->lma = (hdr->p_paddr + hdr->p_filesz) / opb;
      newsect->size = hdr->p_memsz - hdr->p_filesz;
      newsect->filepos = hdr->p_offset + hdr->p_filesz;
      align = newsect->vma & -newsect->vma;
      if (align == 0 || align > hdr->p_align)
	align = hdr->p_align;
      newsect->alignment_power = bfd_log2 (align);
      if (hdr->p_type == PT_LOAD)
	{
	  newsect->flags |= SEC_ALLOC;
	  if (hdr->p_flags & PF_X)
	    newsect->flags |= SEC_CODE;
	}
      if (!(hdr->p_flags & PF_W))
	newsect->flags |= SEC_READONLY;
    }

  return true;
}

static bool
_bfd_elf_core_find_build_id (bfd *templ, bfd_vma offset)
{
  /* The return value is ignored.  Build-ids are considered optional.  */
  if (templ->xvec->flavour == bfd_target_elf_flavour)
    return (*get_elf_backend_data (templ)->elf_backend_core_find_build_id)
      (templ, offset);
  return false;
}

bool
bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index)
{
  const struct elf_backend_data *bed;

  switch (hdr->p_type)
    {
    case PT_NULL:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null");

    case PT_LOAD:
      if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load"))
	return false;
      if (bfd_get_format (abfd) == bfd_core && abfd->build_id == NULL)
	_bfd_elf_core_find_build_id (abfd, hdr->p_offset);
      return true;

    case PT_DYNAMIC:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic");

    case PT_INTERP:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp");

    case PT_NOTE:
      if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note"))
	return false;
      if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz,
			    hdr->p_align))
	return false;
      return true;

    case PT_SHLIB:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib");

    case PT_PHDR:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr");

    case PT_GNU_EH_FRAME:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index,
					      "eh_frame_hdr");

    case PT_GNU_STACK:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack");

    case PT_GNU_RELRO:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro");

    case PT_GNU_SFRAME:
      return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index,
					      "sframe");

    default:
      /* Check for any processor-specific program segment types.  */
      bed = get_elf_backend_data (abfd);
      return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc");
    }
}

/* Return the REL_HDR for SEC, assuming there is only a single one, either
   REL or RELA.  */

Elf_Internal_Shdr *
_bfd_elf_single_rel_hdr (asection *sec)
{
  if (elf_section_data (sec)->rel.hdr)
    {
      BFD_ASSERT (elf_section_data (sec)->rela.hdr == NULL);
      return elf_section_data (sec)->rel.hdr;
    }
  else
    return elf_section_data (sec)->rela.hdr;
}

static bool
_bfd_elf_set_reloc_sh_name (bfd *abfd,
			    Elf_Internal_Shdr *rel_hdr,
			    const char *sec_name,
			    bool use_rela_p)
{
  char *name = (char *) bfd_alloc (abfd,
				   sizeof ".rela" + strlen (sec_name));
  if (name == NULL)
    return false;

  sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", sec_name);
  rel_hdr->sh_name =
    (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
					false);
  if (rel_hdr->sh_name == (unsigned int) -1)
    return false;

  return true;
}

/* Allocate and initialize a section-header for a new reloc section,
   containing relocations against ASECT.  It is stored in RELDATA.  If
   USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL
   relocations.  */

static bool
_bfd_elf_init_reloc_shdr (bfd *abfd,
			  struct bfd_elf_section_reloc_data *reldata,
			  const char *sec_name,
			  bool use_rela_p,
			  bool delay_st_name_p)
{
  Elf_Internal_Shdr *rel_hdr;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  BFD_ASSERT (reldata->hdr == NULL);
  rel_hdr = bfd_zalloc (abfd, sizeof (*rel_hdr));
  reldata->hdr = rel_hdr;

  if (delay_st_name_p)
    rel_hdr->sh_name = (unsigned int) -1;
  else if (!_bfd_elf_set_reloc_sh_name (abfd, rel_hdr, sec_name,
					use_rela_p))
    return false;
  rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
  rel_hdr->sh_entsize = (use_rela_p
			 ? bed->s->sizeof_rela
			 : bed->s->sizeof_rel);
  rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;
  rel_hdr->sh_flags = 0;
  rel_hdr->sh_addr = 0;
  rel_hdr->sh_size = 0;
  rel_hdr->sh_offset = 0;

  return true;
}

/* Return the default section type based on the passed in section flags.  */

int
bfd_elf_get_default_section_type (flagword flags)
{
  if ((flags & (SEC_ALLOC | SEC_IS_COMMON)) != 0
      && (flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
    return SHT_NOBITS;
  return SHT_PROGBITS;
}

struct fake_section_arg
{
  struct bfd_link_info *link_info;
  bool failed;
};

/* Set up an ELF internal section header for a section.  */

static void
elf_fake_sections (bfd *abfd, asection *asect, void *fsarg)
{
  struct fake_section_arg *arg = (struct fake_section_arg *)fsarg;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  struct bfd_elf_section_data *esd = elf_section_data (asect);
  Elf_Internal_Shdr *this_hdr;
  unsigned int sh_type;
  const char *name = asect->name;
  bool delay_st_name_p = false;
  bfd_vma mask;

  if (arg->failed)
    {
      /* We already failed; just get out of the bfd_map_over_sections
	 loop.  */
      return;
    }

  this_hdr = &esd->this_hdr;

  /* ld: compress DWARF debug sections with names: .debug_*.  */
  if (arg->link_info
      && (abfd->flags & BFD_COMPRESS) != 0
      && (asect->flags & SEC_DEBUGGING) != 0
      && name[1] == 'd'
      && name[6] == '_')
    {
      /* If this section will be compressed, delay adding section
	 name to section name section after it is compressed in
	 _bfd_elf_assign_file_positions_for_non_load.  */
      delay_st_name_p = true;
    }

  if (delay_st_name_p)
    this_hdr->sh_name = (unsigned int) -1;
  else
    {
      this_hdr->sh_name
	= (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
					      name, false);
      if (this_hdr->sh_name == (unsigned int) -1)
	{
	  arg->failed = true;
	  return;
	}
    }

  /* Don't clear sh_flags. Assembler may set additional bits.  */

  if ((asect->flags & SEC_ALLOC) != 0
      || asect->user_set_vma)
    this_hdr->sh_addr = asect->vma * bfd_octets_per_byte (abfd, asect);
  else
    this_hdr->sh_addr = 0;

  this_hdr->sh_offset = 0;
  this_hdr->sh_size = asect->size;
  this_hdr->sh_link = 0;
  /* PR 17512: file: 0eb809fe, 8b0535ee.  */
  if (asect->alignment_power >= (sizeof (bfd_vma) * 8) - 1)
    {
      _bfd_error_handler
	/* xgettext:c-format */
	(_("%pB: error: alignment power %d of section `%pA' is too big"),
	 abfd, asect->alignment_power, asect);
      arg->failed = true;
      return;
    }
  /* Set sh_addralign to the highest power of two given by alignment
     consistent with the section VMA.  Linker scripts can force VMA.  */
  mask = ((bfd_vma) 1 << asect->alignment_power) | this_hdr->sh_addr;
  this_hdr->sh_addralign = mask & -mask;
  /* The sh_entsize and sh_info fields may have been set already by
     copy_private_section_data.  */

  this_hdr->bfd_section = asect;
  this_hdr->contents = NULL;

  /* If the section type is unspecified, we set it based on
     asect->flags.  */
  if (asect->type != 0)
    sh_type = asect->type;
  else if ((asect->flags & SEC_GROUP) != 0)
    sh_type = SHT_GROUP;
  else
    sh_type = bfd_elf_get_default_section_type (asect->flags);

  if (this_hdr->sh_type == SHT_NULL)
    this_hdr->sh_type = sh_type;
  else if (this_hdr->sh_type == SHT_NOBITS
	   && sh_type == SHT_PROGBITS
	   && (asect->flags & SEC_ALLOC) != 0)
    {
      /* Warn if we are changing a NOBITS section to PROGBITS, but
	 allow the link to proceed.  This can happen when users link
	 non-bss input sections to bss output sections, or emit data
	 to a bss output section via a linker script.  */
      _bfd_error_handler
	(_("warning: section `%pA' type changed to PROGBITS"), asect);
      this_hdr->sh_type = sh_type;
    }

  switch (this_hdr->sh_type)
    {
    default:
      break;

    case SHT_STRTAB:
    case SHT_NOTE:
    case SHT_NOBITS:
    case SHT_PROGBITS:
      break;

    case SHT_INIT_ARRAY:
    case SHT_FINI_ARRAY:
    case SHT_PREINIT_ARRAY:
      this_hdr->sh_entsize = bed->s->arch_size / 8;
      break;

    case SHT_HASH:
      this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
      break;

    case SHT_DYNSYM:
      this_hdr->sh_entsize = bed->s->sizeof_sym;
      break;

    case SHT_DYNAMIC:
      this_hdr->sh_entsize = bed->s->sizeof_dyn;
      break;

    case SHT_RELA:
      if (get_elf_backend_data (abfd)->may_use_rela_p)
	this_hdr->sh_entsize = bed->s->sizeof_rela;
      break;

     case SHT_REL:
      if (get_elf_backend_data (abfd)->may_use_rel_p)
	this_hdr->sh_entsize = bed->s->sizeof_rel;
      break;

     case SHT_GNU_versym:
      this_hdr->sh_entsize = sizeof (Elf_External_Versym);
      break;

     case SHT_GNU_verdef:
      this_hdr->sh_entsize = 0;
      /* objcopy or strip will copy over sh_info, but may not set
	 cverdefs.  The linker will set cverdefs, but sh_info will be
	 zero.  */
      if (this_hdr->sh_info == 0)
	this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
      else
	BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
		    || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
      break;

    case SHT_GNU_verneed:
      this_hdr->sh_entsize = 0;
      /* objcopy or strip will copy over sh_info, but may not set
	 cverrefs.  The linker will set cverrefs, but sh_info will be
	 zero.  */
      if (this_hdr->sh_info == 0)
	this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
      else
	BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
		    || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
      break;

    case SHT_GROUP:
      this_hdr->sh_entsize = GRP_ENTRY_SIZE;
      break;

    case SHT_GNU_HASH:
      this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4;
      break;
    }

  if ((asect->flags & SEC_ALLOC) != 0)
    this_hdr->sh_flags |= SHF_ALLOC;
  if ((asect->flags & SEC_READONLY) == 0)
    this_hdr->sh_flags |= SHF_WRITE;
  if ((asect->flags & SEC_CODE) != 0)
    this_hdr->sh_flags |= SHF_EXECINSTR;
  if ((asect->flags & SEC_MERGE) != 0)
    {
      this_hdr->sh_flags |= SHF_MERGE;
      this_hdr->sh_entsize = asect->entsize;
    }
  if ((asect->flags & SEC_STRINGS) != 0)
    this_hdr->sh_flags |= SHF_STRINGS;
  if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
    this_hdr->sh_flags |= SHF_GROUP;
  if ((asect->flags & SEC_THREAD_LOCAL) != 0)
    {
      this_hdr->sh_flags |= SHF_TLS;
      if (asect->size == 0
	  && (asect->flags & SEC_HAS_CONTENTS) == 0)
	{
	  struct bfd_link_order *o = asect->map_tail.link_order;

	  this_hdr->sh_size = 0;
	  if (o != NULL)
	    {
	      this_hdr->sh_size = o->offset + o->size;
	      if (this_hdr->sh_size != 0)
		this_hdr->sh_type = SHT_NOBITS;
	    }
	}
    }
  if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
    this_hdr->sh_flags |= SHF_EXCLUDE;

  /* If the section has relocs, set up a section header for the
     SHT_REL[A] section.  If two relocation sections are required for
     this section, it is up to the processor-specific back-end to
     create the other.  */
  if ((asect->flags & SEC_RELOC) != 0)
    {
      /* When doing a relocatable link, create both REL and RELA sections if
	 needed.  */
      if (arg->link_info
	  /* Do the normal setup if we wouldn't create any sections here.  */
	  && esd->rel.count + esd->rela.count > 0
	  && (bfd_link_relocatable (arg->link_info)
	      || arg->link_info->emitrelocations))
	{
	  if (esd->rel.count && esd->rel.hdr == NULL
	      && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, name,
					    false, delay_st_name_p))
	    {
	      arg->failed = true;
	      return;
	    }
	  if (esd->rela.count && esd->rela.hdr == NULL
	      && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, name,
					    true, delay_st_name_p))
	    {
	      arg->failed = true;
	      return;
	    }
	}
      else if (!_bfd_elf_init_reloc_shdr (abfd,
					  (asect->use_rela_p
					   ? &esd->rela : &esd->rel),
					  name,
					  asect->use_rela_p,
					  delay_st_name_p))
	{
	  arg->failed = true;
	  return;
	}
    }

  /* Check for processor-specific section types.  */
  sh_type = this_hdr->sh_type;
  if (bed->elf_backend_fake_sections
      && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
    {
      arg->failed = true;
      return;
    }

  if (sh_type == SHT_NOBITS && asect->size != 0)
    {
      /* Don't change the header type from NOBITS if we are being
	 called for objcopy --only-keep-debug.  */
      this_hdr->sh_type = sh_type;
    }
}

/* Fill in the contents of a SHT_GROUP section.  Called from
   _bfd_elf_compute_section_file_positions for gas, objcopy, and
   when ELF targets use the generic linker, ld.  Called for ld -r
   from bfd_elf_final_link.  */

void
bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg)
{
  bool *failedptr = (bool *) failedptrarg;
  asection *elt, *first;
  unsigned char *loc;
  bool gas;

  /* Ignore linker created group section.  See elfNN_ia64_object_p in
     elfxx-ia64.c.  */
  if ((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP
      || sec->size == 0
      || *failedptr)
    return;

  if (elf_section_data (sec)->this_hdr.sh_info == 0)
    {
      unsigned long symindx = 0;

      /* elf_group_id will have been set up by objcopy and the
	 generic linker.  */
      if (elf_group_id (sec) != NULL)
	symindx = elf_group_id (sec)->udata.i;

      if (symindx == 0)
	{
	  /* If called from the assembler, swap_out_syms will have set up
	     elf_section_syms.
	     PR 25699: A corrupt input file could contain bogus group info.  */
	  if (sec->index >= elf_num_section_syms (abfd)
	      || elf_section_syms (abfd)[sec->index] == NULL)
	    {
	      *failedptr = true;
	      return;
	    }
	  symindx = elf_section_syms (abfd)[sec->index]->udata.i;
	}
      elf_section_data (sec)->this_hdr.sh_info = symindx;
    }
  else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2)
    {
      /* The ELF backend linker sets sh_info to -2 when the group
	 signature symbol is global, and thus the index can't be
	 set until all local symbols are output.  */
      asection *igroup;
      struct bfd_elf_section_data *sec_data;
      unsigned long symndx;
      unsigned long extsymoff;
      struct elf_link_hash_entry *h;

      /* The point of this little dance to the first SHF_GROUP section
	 then back to the SHT_GROUP section is that this gets us to
	 the SHT_GROUP in the input object.  */
      igroup = elf_sec_group (elf_next_in_group (sec));
      sec_data = elf_section_data (igroup);
      symndx = sec_data->this_hdr.sh_info;
      extsymoff = 0;
      if (!elf_bad_symtab (igroup->owner))
	{
	  Elf_Internal_Shdr *symtab_hdr;

	  symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr;
	  extsymoff = symtab_hdr->sh_info;
	}
      h = elf_sym_hashes (igroup->owner)[symndx - extsymoff];
      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;

      elf_section_data (sec)->this_hdr.sh_info = h->indx;
    }

  /* The contents won't be allocated for "ld -r" or objcopy.  */
  gas = true;
  if (sec->contents == NULL)
    {
      gas = false;
      sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size);

      /* Arrange for the section to be written out.  */
      elf_section_data (sec)->this_hdr.contents = sec->contents;
      if (sec->contents == NULL)
	{
	  *failedptr = true;
	  return;
	}
    }

  loc = sec->contents + sec->size;

  /* Get the pointer to the first section in the group that gas
     squirreled away here.  objcopy arranges for this to be set to the
     start of the input section group.  */
  first = elt = elf_next_in_group (sec);

  /* First element is a flag word.  Rest of section is elf section
     indices for all the sections of the group.  Write them backwards
     just to keep the group in the same order as given in .section
     directives, not that it matters.  */
  while (elt != NULL)
    {
      asection *s;

      s = elt;
      if (!gas)
	s = s->output_section;
      if (s != NULL
	  && !bfd_is_abs_section (s))
	{
	  struct bfd_elf_section_data *elf_sec = elf_section_data (s);
	  struct bfd_elf_section_data *input_elf_sec = elf_section_data (elt);

	  if (elf_sec->rel.hdr != NULL
	      && (gas
		  || (input_elf_sec->rel.hdr != NULL
		      && input_elf_sec->rel.hdr->sh_flags & SHF_GROUP) != 0))
	    {
	      elf_sec->rel.hdr->sh_flags |= SHF_GROUP;
	      loc -= 4;
	      if (loc == sec->contents)
		break;
	      H_PUT_32 (abfd, elf_sec->rel.idx, loc);
	    }
	  if (elf_sec->rela.hdr != NULL
	      && (gas
		  || (input_elf_sec->rela.hdr != NULL
		      && input_elf_sec->rela.hdr->sh_flags & SHF_GROUP) != 0))
	    {
	      elf_sec->rela.hdr->sh_flags |= SHF_GROUP;
	      loc -= 4;
	      if (loc == sec->contents)
		break;
	      H_PUT_32 (abfd, elf_sec->rela.idx, loc);
	    }
	  loc -= 4;
	  if (loc == sec->contents)
	    break;
	  H_PUT_32 (abfd, elf_sec->this_idx, loc);
	}
      elt = elf_next_in_group (elt);
      if (elt == first)
	break;
    }

  /* We should always get here with loc == sec->contents + 4, but it is
     possible to craft bogus SHT_GROUP sections that will cause segfaults
     in objcopy without checking loc here and in the loop above.  */
  if (loc == sec->contents)
    BFD_ASSERT (0);
  else
    {
      loc -= 4;
      if (loc != sec->contents)
	{
	  BFD_ASSERT (0);
	  memset (sec->contents + 4, 0, loc - sec->contents);
	  loc = sec->contents;
	}
    }

  H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
}

/* Given NAME, the name of a relocation section stripped of its
   .rel/.rela prefix, return the section in ABFD to which the
   relocations apply.  */

asection *
_bfd_elf_plt_get_reloc_section (bfd *abfd, const char *name)
{
  /* If a target needs .got.plt section, relocations in rela.plt/rel.plt
     section likely apply to .got.plt or .got section.  */
  if (get_elf_backend_data (abfd)->want_got_plt
      && strcmp (name, ".plt") == 0)
    {
      asection *sec;

      name = ".got.plt";
      sec = bfd_get_section_by_name (abfd, name);
      if (sec != NULL)
	return sec;
      name = ".got";
    }

  return bfd_get_section_by_name (abfd, name);
}

/* Return the section to which RELOC_SEC applies.  */

static asection *
elf_get_reloc_section (asection *reloc_sec)
{
  const char *name;
  unsigned int type;
  bfd *abfd;
  const struct elf_backend_data *bed;

  type = elf_section_data (reloc_sec)->this_hdr.sh_type;
  if (type != SHT_REL && type != SHT_RELA)
    return NULL;

  /* We look up the section the relocs apply to by name.  */
  name = reloc_sec->name;
  if (!startswith (name, ".rel"))
    return NULL;
  name += 4;
  if (type == SHT_RELA && *name++ != 'a')
    return NULL;

  abfd = reloc_sec->owner;
  bed = get_elf_backend_data (abfd);
  return bed->get_reloc_section (abfd, name);
}

/* Assign all ELF section numbers.  The dummy first section is handled here
   too.  The link/info pointers for the standard section types are filled
   in here too, while we're at it.  LINK_INFO will be 0 when arriving
   here for gas, objcopy, and when using the generic ELF linker.  */

static bool
assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
{
  struct elf_obj_tdata *t = elf_tdata (abfd);
  asection *sec;
  unsigned int section_number;
  Elf_Internal_Shdr **i_shdrp;
  struct bfd_elf_section_data *d;
  bool need_symtab;
  size_t amt;

  section_number = 1;

  _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));

  /* SHT_GROUP sections are in relocatable files only.  */
  if (link_info == NULL || !link_info->resolve_section_groups)
    {
      size_t reloc_count = 0;

      /* Put SHT_GROUP sections first.  */
      for (sec = abfd->sections; sec != NULL; sec = sec->next)
	{
	  d = elf_section_data (sec);

	  if (d->this_hdr.sh_type == SHT_GROUP)
	    {
	      if (sec->flags & SEC_LINKER_CREATED)
		{
		  /* Remove the linker created SHT_GROUP sections.  */
		  bfd_section_list_remove (abfd, sec);
		  abfd->section_count--;
		}
	      else
		d->this_idx = section_number++;
	    }

	  /* Count relocations.  */
	  reloc_count += sec->reloc_count;
	}

      /* Set/clear HAS_RELOC depending on whether there are relocations.  */
      if (reloc_count == 0)
	abfd->flags &= ~HAS_RELOC;
      else
	abfd->flags |= HAS_RELOC;
    }

  for (sec = abfd->sections; sec; sec = sec->next)
    {
      d = elf_section_data (sec);

      if (d->this_hdr.sh_type != SHT_GROUP)
	d->this_idx = section_number++;
      if (d->this_hdr.sh_name != (unsigned int) -1)
	_bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
      if (d->rel.hdr)
	{
	  d->rel.idx = section_number++;
	  if (d->rel.hdr->sh_name != (unsigned int) -1)
	    _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name);
	}
      else
	d->rel.idx = 0;

      if (d->rela.hdr)
	{
	  d->rela.idx = section_number++;
	  if (d->rela.hdr->sh_name != (unsigned int) -1)
	    _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name);
	}
      else
	d->rela.idx = 0;
    }

  need_symtab = (bfd_get_symcount (abfd) > 0
		 || (link_info == NULL
		     && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
			 == HAS_RELOC)));
  if (need_symtab)
    {
      elf_onesymtab (abfd) = section_number++;
      _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
      if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF))
	{
	  elf_section_list *entry;

	  BFD_ASSERT (elf_symtab_shndx_list (abfd) == NULL);

	  entry = bfd_zalloc (abfd, sizeof (*entry));
	  entry->ndx = section_number++;
	  elf_symtab_shndx_list (abfd) = entry;
	  entry->hdr.sh_name
	    = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
						  ".symtab_shndx", false);
	  if (entry->hdr.sh_name == (unsigned int) -1)
	    return false;
	}
      elf_strtab_sec (abfd) = section_number++;
      _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
    }

  elf_shstrtab_sec (abfd) = section_number++;
  _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
  elf_elfheader (abfd)->e_shstrndx = elf_shstrtab_sec (abfd);

  if (section_number >= SHN_LORESERVE)
    {
      /* xgettext:c-format */
      _bfd_error_handler (_("%pB: too many sections: %u"),
			  abfd, section_number);
      return false;
    }

  elf_numsections (abfd) = section_number;
  elf_elfheader (abfd)->e_shnum = section_number;

  /* Set up the list of section header pointers, in agreement with the
     indices.  */
  amt = section_number * sizeof (Elf_Internal_Shdr *);
  i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc (abfd, amt);
  if (i_shdrp == NULL)
    return false;

  i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd,
						 sizeof (Elf_Internal_Shdr));
  if (i_shdrp[0] == NULL)
    {
      bfd_release (abfd, i_shdrp);
      return false;
    }

  elf_elfsections (abfd) = i_shdrp;

  i_shdrp[elf_shstrtab_sec (abfd)] = &t->shstrtab_hdr;
  if (need_symtab)
    {
      i_shdrp[elf_onesymtab (abfd)] = &t->symtab_hdr;
      if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF))
	{
	  elf_section_list * entry = elf_symtab_shndx_list (abfd);
	  BFD_ASSERT (entry != NULL);
	  i_shdrp[entry->ndx] = & entry->hdr;
	  entry->hdr.sh_link = elf_onesymtab (abfd);
	}
      i_shdrp[elf_strtab_sec (abfd)] = &t->strtab_hdr;
      t->symtab_hdr.sh_link = elf_strtab_sec (abfd);
    }

  for (sec = abfd->sections; sec; sec = sec->next)
    {
      asection *s;

      d = elf_section_data (sec);

      i_shdrp[d->this_idx] = &d->this_hdr;
      if (d->rel.idx != 0)
	i_shdrp[d->rel.idx] = d->rel.hdr;
      if (d->rela.idx != 0)
	i_shdrp[d->rela.idx] = d->rela.hdr;

      /* Fill in the sh_link and sh_info fields while we're at it.  */

      /* sh_link of a reloc section is the section index of the symbol
	 table.  sh_info is the section index of the section to which
	 the relocation entries apply.  */
      if (d->rel.idx != 0)
	{
	  d->rel.hdr->sh_link = elf_onesymtab (abfd);
	  d->rel.hdr->sh_info = d->this_idx;
	  d->rel.hdr->sh_flags |= SHF_INFO_LINK;
	}
      if (d->rela.idx != 0)
	{
	  d->rela.hdr->sh_link = elf_onesymtab (abfd);
	  d->rela.hdr->sh_info = d->this_idx;
	  d->rela.hdr->sh_flags |= SHF_INFO_LINK;
	}

      /* We need to set up sh_link for SHF_LINK_ORDER.  */
      if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0)
	{
	  s = elf_linked_to_section (sec);
	  /* We can now have a NULL linked section pointer.
	     This happens when the sh_link field is 0, which is done
	     when a linked to section is discarded but the linking
	     section has been retained for some reason.  */
	  if (s)
	    {
	      /* Check discarded linkonce section.  */
	      if (discarded_section (s))
		{
		  asection *kept;
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB: sh_link of section `%pA' points to"
		       " discarded section `%pA' of `%pB'"),
		     abfd, d->this_hdr.bfd_section, s, s->owner);
		  /* Point to the kept section if it has the same
		     size as the discarded one.  */
		  kept = _bfd_elf_check_kept_section (s, link_info);
		  if (kept == NULL)
		    {
		      bfd_set_error (bfd_error_bad_value);
		      return false;
		    }
		  s = kept;
		}
	      /* Handle objcopy. */
	      else if (s->output_section == NULL)
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB: sh_link of section `%pA' points to"
		       " removed section `%pA' of `%pB'"),
		     abfd, d->this_hdr.bfd_section, s, s->owner);
		  bfd_set_error (bfd_error_bad_value);
		  return false;
		}
	      s = s->output_section;
	      d->this_hdr.sh_link = elf_section_data (s)->this_idx;
	    }
	}

      switch (d->this_hdr.sh_type)
	{
	case SHT_REL:
	case SHT_RELA:
	  /* sh_link is the section index of the symbol table.
	     sh_info is the section index of the section to which the
	     relocation entries apply.  */
	  if (d->this_hdr.sh_link == 0)
	    {
	      /* FIXME maybe: If this is a reloc section which we are
		 treating as a normal section then we likely should
		 not be assuming its sh_link is .dynsym or .symtab.  */
	      if ((sec->flags & SEC_ALLOC) != 0)
		{
		  s = bfd_get_section_by_name (abfd, ".dynsym");
		  if (s != NULL)
		    d->this_hdr.sh_link = elf_section_data (s)->this_idx;
		}
	      else
		d->this_hdr.sh_link = elf_onesymtab (abfd);
	    }

	  s = elf_get_reloc_section (sec);
	  if (s != NULL)
	    {
	      d->this_hdr.sh_info = elf_section_data (s)->this_idx;
	      d->this_hdr.sh_flags |= SHF_INFO_LINK;
	    }
	  break;

	case SHT_STRTAB:
	  /* We assume that a section named .stab*str is a stabs
	     string section.  We look for a section with the same name
	     but without the trailing ``str'', and set its sh_link
	     field to point to this section.  */
	  if (startswith (sec->name, ".stab")
	      && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
	    {
	      size_t len;
	      char *alc;

	      len = strlen (sec->name);
	      alc = (char *) bfd_malloc (len - 2);
	      if (alc == NULL)
		return false;
	      memcpy (alc, sec->name, len - 3);
	      alc[len - 3] = '\0';
	      s = bfd_get_section_by_name (abfd, alc);
	      free (alc);
	      if (s != NULL)
		{
		  elf_section_data (s)->this_hdr.sh_link = d->this_idx;

		  /* This is a .stab section.  */
		  elf_section_data (s)->this_hdr.sh_entsize = 12;
		}
	    }
	  break;

	case SHT_DYNAMIC:
	case SHT_DYNSYM:
	case SHT_GNU_verneed:
	case SHT_GNU_verdef:
	  /* sh_link is the section header index of the string table
	     used for the dynamic entries, or the symbol table, or the
	     version strings.  */
	  s = bfd_get_section_by_name (abfd, ".dynstr");
	  if (s != NULL)
	    d->this_hdr.sh_link = elf_section_data (s)->this_idx;
	  break;

	case SHT_GNU_LIBLIST:
	  /* sh_link is the section header index of the prelink library
	     list used for the dynamic entries, or the symbol table, or
	     the version strings.  */
	  s = bfd_get_section_by_name (abfd, ((sec->flags & SEC_ALLOC)
					      ? ".dynstr" : ".gnu.libstr"));
	  if (s != NULL)
	    d->this_hdr.sh_link = elf_section_data (s)->this_idx;
	  break;

	case SHT_HASH:
	case SHT_GNU_HASH:
	case SHT_GNU_versym:
	  /* sh_link is the section header index of the symbol table
	     this hash table or version table is for.  */
	  s = bfd_get_section_by_name (abfd, ".dynsym");
	  if (s != NULL)
	    d->this_hdr.sh_link = elf_section_data (s)->this_idx;
	  break;

	case SHT_GROUP:
	  d->this_hdr.sh_link = elf_onesymtab (abfd);
	}
    }

  /* Delay setting sh_name to _bfd_elf_write_object_contents so that
     _bfd_elf_assign_file_positions_for_non_load can convert DWARF
     debug section name from .debug_* to .zdebug_* if needed.  */

  return true;
}

static bool
sym_is_global (bfd *abfd, asymbol *sym)
{
  /* If the backend has a special mapping, use it.  */
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  if (bed->elf_backend_sym_is_global)
    return (*bed->elf_backend_sym_is_global) (abfd, sym);

  return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
	  || bfd_is_und_section (bfd_asymbol_section (sym))
	  || bfd_is_com_section (bfd_asymbol_section (sym)));
}

/* Filter global symbols of ABFD to include in the import library.  All
   SYMCOUNT symbols of ABFD can be examined from their pointers in
   SYMS.  Pointers of symbols to keep should be stored contiguously at
   the beginning of that array.

   Returns the number of symbols to keep.  */

unsigned int
_bfd_elf_filter_global_symbols (bfd *abfd, struct bfd_link_info *info,
				asymbol **syms, long symcount)
{
  long src_count, dst_count = 0;

  for (src_count = 0; src_count < symcount; src_count++)
    {
      asymbol *sym = syms[src_count];
      char *name = (char *) bfd_asymbol_name (sym);
      struct bfd_link_hash_entry *h;

      if (!sym_is_global (abfd, sym))
	continue;

      h = bfd_link_hash_lookup (info->hash, name, false, false, false);
      if (h == NULL)
	continue;
      if (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak)
	continue;
      if (h->linker_def || h->ldscript_def)
	continue;

      syms[dst_count++] = sym;
    }

  syms[dst_count] = NULL;

  return dst_count;
}

/* Don't output section symbols for sections that are not going to be
   output, that are duplicates or there is no BFD section.  */

static bool
ignore_section_sym (bfd *abfd, asymbol *sym)
{
  elf_symbol_type *type_ptr;

  if (sym == NULL)
    return false;

  if ((sym->flags & BSF_SECTION_SYM) == 0)
    return false;

  /* Ignore the section symbol if it isn't used.  */
  if ((sym->flags & BSF_SECTION_SYM_USED) == 0)
    return true;

  if (sym->section == NULL)
    return true;

  type_ptr = elf_symbol_from (sym);
  return ((type_ptr != NULL
	   && type_ptr->internal_elf_sym.st_shndx != 0
	   && bfd_is_abs_section (sym->section))
	  || !(sym->section->owner == abfd
	       || (sym->section->output_section != NULL
		   && sym->section->output_section->owner == abfd
		   && sym->section->output_offset == 0)
	       || bfd_is_abs_section (sym->section)));
}

/* Map symbol from it's internal number to the external number, moving
   all local symbols to be at the head of the list.  */

static bool
elf_map_symbols (bfd *abfd, unsigned int *pnum_locals)
{
  unsigned int symcount = bfd_get_symcount (abfd);
  asymbol **syms = bfd_get_outsymbols (abfd);
  asymbol **sect_syms;
  unsigned int num_locals = 0;
  unsigned int num_globals = 0;
  unsigned int num_locals2 = 0;
  unsigned int num_globals2 = 0;
  unsigned int max_index = 0;
  unsigned int idx;
  asection *asect;
  asymbol **new_syms;
  size_t amt;

#ifdef DEBUG
  fprintf (stderr, "elf_map_symbols\n");
  fflush (stderr);
#endif

  for (asect = abfd->sections; asect; asect = asect->next)
    {
      if (max_index < asect->index)
	max_index = asect->index;
    }

  max_index++;
  amt = max_index * sizeof (asymbol *);
  sect_syms = (asymbol **) bfd_zalloc (abfd, amt);
  if (sect_syms == NULL)
    return false;
  elf_section_syms (abfd) = sect_syms;
  elf_num_section_syms (abfd) = max_index;

  /* Init sect_syms entries for any section symbols we have already
     decided to output.  */
  for (idx = 0; idx < symcount; idx++)
    {
      asymbol *sym = syms[idx];

      if ((sym->flags & BSF_SECTION_SYM) != 0
	  && sym->value == 0
	  && !ignore_section_sym (abfd, sym)
	  && !bfd_is_abs_section (sym->section))
	{
	  asection *sec = sym->section;

	  if (sec->owner != abfd)
	    sec = sec->output_section;

	  sect_syms[sec->index] = syms[idx];
	}
    }

  /* Classify all of the symbols.  */
  for (idx = 0; idx < symcount; idx++)
    {
      if (sym_is_global (abfd, syms[idx]))
	num_globals++;
      else if (!ignore_section_sym (abfd, syms[idx]))
	num_locals++;
    }

  /* We will be adding a section symbol for each normal BFD section.  Most
     sections will already have a section symbol in outsymbols, but
     eg. SHT_GROUP sections will not, and we need the section symbol mapped
     at least in that case.  */
  for (asect = abfd->sections; asect; asect = asect->next)
    {
      asymbol *sym = asect->symbol;
      /* Don't include ignored section symbols.  */
      if (!ignore_section_sym (abfd, sym)
	  && sect_syms[asect->index] == NULL)
	{
	  if (!sym_is_global (abfd, asect->symbol))
	    num_locals++;
	  else
	    num_globals++;
	}
    }

  /* Now sort the symbols so the local symbols are first.  */
  amt = (num_locals + num_globals) * sizeof (asymbol *);
  new_syms = (asymbol **) bfd_alloc (abfd, amt);
  if (new_syms == NULL)
    return false;

  for (idx = 0; idx < symcount; idx++)
    {
      asymbol *sym = syms[idx];
      unsigned int i;

      if (sym_is_global (abfd, sym))
	i = num_locals + num_globals2++;
      /* Don't include ignored section symbols.  */
      else if (!ignore_section_sym (abfd, sym))
	i = num_locals2++;
      else
	continue;
      new_syms[i] = sym;
      sym->udata.i = i + 1;
    }
  for (asect = abfd->sections; asect; asect = asect->next)
    {
      asymbol *sym = asect->symbol;
      if (!ignore_section_sym (abfd, sym)
	  && sect_syms[asect->index] == NULL)
	{
	  unsigned int i;

	  sect_syms[asect->index] = sym;
	  if (!sym_is_global (abfd, sym))
	    i = num_locals2++;
	  else
	    i = num_locals + num_globals2++;
	  new_syms[i] = sym;
	  sym->udata.i = i + 1;
	}
    }

  bfd_set_symtab (abfd, new_syms, num_locals + num_globals);

  *pnum_locals = num_locals;
  return true;
}

/* Align to the maximum file alignment that could be required for any
   ELF data structure.  */

static inline file_ptr
align_file_position (file_ptr off, int align)
{
  return (off + align - 1) & ~(align - 1);
}

/* Assign a file position to a section, optionally aligning to the
   required section alignment.  */

file_ptr
_bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp,
					   file_ptr offset,
					   bool align)
{
  if (align && i_shdrp->sh_addralign > 1)
    offset = BFD_ALIGN (offset, i_shdrp->sh_addralign & -i_shdrp->sh_addralign);
  i_shdrp->sh_offset = offset;
  if (i_shdrp->bfd_section != NULL)
    i_shdrp->bfd_section->filepos = offset;
  if (i_shdrp->sh_type != SHT_NOBITS)
    offset += i_shdrp->sh_size;
  return offset;
}

/* Compute the file positions we are going to put the sections at, and
   otherwise prepare to begin writing out the ELF file.  If LINK_INFO
   is not NULL, this is being called by the ELF backend linker.  */

bool
_bfd_elf_compute_section_file_positions (bfd *abfd,
					 struct bfd_link_info *link_info)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  struct fake_section_arg fsargs;
  bool failed;
  struct elf_strtab_hash *strtab = NULL;
  Elf_Internal_Shdr *shstrtab_hdr;
  bool need_symtab;

  if (abfd->output_has_begun)
    return true;

  /* Do any elf backend specific processing first.  */
  if (bed->elf_backend_begin_write_processing)
    (*bed->elf_backend_begin_write_processing) (abfd, link_info);

  if (!(*bed->elf_backend_init_file_header) (abfd, link_info))
    return false;

  fsargs.failed = false;
  fsargs.link_info = link_info;
  bfd_map_over_sections (abfd, elf_fake_sections, &fsargs);
  if (fsargs.failed)
    return false;

  if (!assign_section_numbers (abfd, link_info))
    return false;

  /* The backend linker builds symbol table information itself.  */
  need_symtab = (link_info == NULL
		 && (bfd_get_symcount (abfd) > 0
		     || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
			 == HAS_RELOC)));
  if (need_symtab)
    {
      /* Non-zero if doing a relocatable link.  */
      int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));

      if (! swap_out_syms (abfd, &strtab, relocatable_p, link_info))
	return false;
    }

  failed = false;
  if (link_info == NULL)
    {
      bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
      if (failed)
	return false;
    }

  shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
  /* sh_name was set in init_file_header.  */
  shstrtab_hdr->sh_type = SHT_STRTAB;
  shstrtab_hdr->sh_flags = bed->elf_strtab_flags;
  shstrtab_hdr->sh_addr = 0;
  /* sh_size is set in _bfd_elf_assign_file_positions_for_non_load.  */
  shstrtab_hdr->sh_entsize = 0;
  shstrtab_hdr->sh_link = 0;
  shstrtab_hdr->sh_info = 0;
  /* sh_offset is set in _bfd_elf_assign_file_positions_for_non_load.  */
  shstrtab_hdr->sh_addralign = 1;

  if (!assign_file_positions_except_relocs (abfd, link_info))
    return false;

  if (need_symtab)
    {
      file_ptr off;
      Elf_Internal_Shdr *hdr;

      off = elf_next_file_pos (abfd);

      hdr = & elf_symtab_hdr (abfd);
      off = _bfd_elf_assign_file_position_for_section (hdr, off, true);

      if (elf_symtab_shndx_list (abfd) != NULL)
	{
	  hdr = & elf_symtab_shndx_list (abfd)->hdr;
	  if (hdr->sh_size != 0)
	    off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
	  /* FIXME: What about other symtab_shndx sections in the list ?  */
	}

      hdr = &elf_tdata (abfd)->strtab_hdr;
      off = _bfd_elf_assign_file_position_for_section (hdr, off, true);

      elf_next_file_pos (abfd) = off;

      /* Now that we know where the .strtab section goes, write it
	 out.  */
      if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
	  || ! _bfd_elf_strtab_emit (abfd, strtab))
	return false;
      _bfd_elf_strtab_free (strtab);
    }

  abfd->output_has_begun = true;

  return true;
}

/* Retrieve .eh_frame_hdr.  Prior to size_dynamic_sections the
   function effectively returns whether --eh-frame-hdr is given on the
   command line.  After size_dynamic_sections the result reflects
   whether .eh_frame_hdr will actually be output (sizing isn't done
   until ldemul_after_allocation).  */

static asection *
elf_eh_frame_hdr (const struct bfd_link_info *info)
{
  if (info != NULL && is_elf_hash_table (info->hash))
    return elf_hash_table (info)->eh_info.hdr_sec;
  return NULL;
}

/* Make an initial estimate of the size of the program header.  If we
   get the number wrong here, we'll redo section placement.  */

static bfd_size_type
get_program_header_size (bfd *abfd, struct bfd_link_info *info)
{
  size_t segs;
  asection *s;
  const struct elf_backend_data *bed;

  /* Assume we will need exactly two PT_LOAD segments: one for text
     and one for data.  */
  segs = 2;

  s = bfd_get_section_by_name (abfd, ".interp");
  if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->size != 0)
    {
      /* If we have a loadable interpreter section, we need a
	 PT_INTERP segment.  In this case, assume we also need a
	 PT_PHDR segment, although that may not be true for all
	 targets.  */
      segs += 2;
    }

  if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
    {
      /* We need a PT_DYNAMIC segment.  */
      ++segs;
    }

  if (info != NULL && info->relro)
    {
      /* We need a PT_GNU_RELRO segment.  */
      ++segs;
    }

  if (elf_eh_frame_hdr (info))
    {
      /* We need a PT_GNU_EH_FRAME segment.  */
      ++segs;
    }

  if (elf_stack_flags (abfd))
    {
      /* We need a PT_GNU_STACK segment.  */
      ++segs;
    }

  if (elf_sframe (abfd))
    {
      /* We need a PT_GNU_SFRAME segment.  */
      ++segs;
    }

  s = bfd_get_section_by_name (abfd,
			       NOTE_GNU_PROPERTY_SECTION_NAME);
  if (s != NULL && s->size != 0)
    {
      /* We need a PT_GNU_PROPERTY segment.  */
      ++segs;
    }

  for (s = abfd->sections; s != NULL; s = s->next)
    {
      if ((s->flags & SEC_LOAD) != 0
	  && elf_section_type (s) == SHT_NOTE)
	{
	  unsigned int alignment_power;
	  /* We need a PT_NOTE segment.  */
	  ++segs;
	  /* Try to create just one PT_NOTE segment for all adjacent
	     loadable SHT_NOTE sections.  gABI requires that within a
	     PT_NOTE segment (and also inside of each SHT_NOTE section)
	     each note should have the same alignment.  So we check
	     whether the sections are correctly aligned.  */
	  alignment_power = s->alignment_power;
	  while (s->next != NULL
		 && s->next->alignment_power == alignment_power
		 && (s->next->flags & SEC_LOAD) != 0
		 && elf_section_type (s->next) == SHT_NOTE)
	    s = s->next;
	}
    }

  for (s = abfd->sections; s != NULL; s = s->next)
    {
      if (s->flags & SEC_THREAD_LOCAL)
	{
	  /* We need a PT_TLS segment.  */
	  ++segs;
	  break;
	}
    }

  bed = get_elf_backend_data (abfd);

  if ((abfd->flags & D_PAGED) != 0
      && (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0)
    {
      /* Add a PT_GNU_MBIND segment for each mbind section.  */
      bfd_vma commonpagesize;
      unsigned int page_align_power;

      if (info != NULL)
	commonpagesize = info->commonpagesize;
      else
	commonpagesize = bed->commonpagesize;
      page_align_power = bfd_log2 (commonpagesize);
      for (s = abfd->sections; s != NULL; s = s->next)
	if (elf_section_flags (s) & SHF_GNU_MBIND)
	  {
	    if (elf_section_data (s)->this_hdr.sh_info > PT_GNU_MBIND_NUM)
	      {
		_bfd_error_handler
		  /* xgettext:c-format */
		  (_("%pB: GNU_MBIND section `%pA' has invalid "
		     "sh_info field: %d"),
		   abfd, s, elf_section_data (s)->this_hdr.sh_info);
		continue;
	      }
	    /* Align mbind section to page size.  */
	    if (s->alignment_power < page_align_power)
	      s->alignment_power = page_align_power;
	    segs ++;
	  }
    }

  /* Let the backend count up any program headers it might need.  */
  if (bed->elf_backend_additional_program_headers)
    {
      int a;

      a = (*bed->elf_backend_additional_program_headers) (abfd, info);
      if (a == -1)
	abort ();
      segs += a;
    }

  return segs * bed->s->sizeof_phdr;
}

/* Find the segment that contains the output_section of section.  */

Elf_Internal_Phdr *
_bfd_elf_find_segment_containing_section (bfd * abfd, asection * section)
{
  struct elf_segment_map *m;
  Elf_Internal_Phdr *p;

  for (m = elf_seg_map (abfd), p = elf_tdata (abfd)->phdr;
       m != NULL;
       m = m->next, p++)
    {
      int i;

      for (i = m->count - 1; i >= 0; i--)
	if (m->sections[i] == section)
	  return p;
    }

  return NULL;
}

/* Create a mapping from a set of sections to a program segment.  */

static struct elf_segment_map *
make_mapping (bfd *abfd,
	      asection **sections,
	      unsigned int from,
	      unsigned int to,
	      bool phdr)
{
  struct elf_segment_map *m;
  unsigned int i;
  asection **hdrpp;
  size_t amt;

  amt = sizeof (struct elf_segment_map) - sizeof (asection *);
  amt += (to - from) * sizeof (asection *);
  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
  if (m == NULL)
    return NULL;
  m->next = NULL;
  m->p_type = PT_LOAD;
  for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
    m->sections[i - from] = *hdrpp;
  m->count = to - from;

  if (from == 0 && phdr)
    {
      /* Include the headers in the first PT_LOAD segment.  */
      m->includes_filehdr = 1;
      m->includes_phdrs = 1;
    }

  return m;
}

/* Create the PT_DYNAMIC segment, which includes DYNSEC.  Returns NULL
   on failure.  */

struct elf_segment_map *
_bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec)
{
  struct elf_segment_map *m;

  m = (struct elf_segment_map *) bfd_zalloc (abfd,
					     sizeof (struct elf_segment_map));
  if (m == NULL)
    return NULL;
  m->next = NULL;
  m->p_type = PT_DYNAMIC;
  m->count = 1;
  m->sections[0] = dynsec;

  return m;
}

/* Possibly add or remove segments from the segment map.  */

static bool
elf_modify_segment_map (bfd *abfd,
			struct bfd_link_info *info,
			bool remove_empty_load)
{
  struct elf_segment_map **m;
  const struct elf_backend_data *bed;

  /* The placement algorithm assumes that non allocated sections are
     not in PT_LOAD segments.  We ensure this here by removing such
     sections from the segment map.  We also remove excluded
     sections.  Finally, any PT_LOAD segment without sections is
     removed.  */
  m = &elf_seg_map (abfd);
  while (*m)
    {
      unsigned int i, new_count;

      for (new_count = 0, i = 0; i < (*m)->count; i++)
	{
	  if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0
	      && (((*m)->sections[i]->flags & SEC_ALLOC) != 0
		  || (*m)->p_type != PT_LOAD))
	    {
	      (*m)->sections[new_count] = (*m)->sections[i];
	      new_count++;
	    }
	}
      (*m)->count = new_count;

      if (remove_empty_load
	  && (*m)->p_type == PT_LOAD
	  && (*m)->count == 0
	  && !(*m)->includes_phdrs)
	*m = (*m)->next;
      else
	m = &(*m)->next;
    }

  bed = get_elf_backend_data (abfd);
  if (bed->elf_backend_modify_segment_map != NULL)
    {
      if (!(*bed->elf_backend_modify_segment_map) (abfd, info))
	return false;
    }

  return true;
}

#define IS_TBSS(s) \
  ((s->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) == SEC_THREAD_LOCAL)

/* Set up a mapping from BFD sections to program segments.  Update
   NEED_LAYOUT if the section layout is changed.  */

bool
_bfd_elf_map_sections_to_segments (bfd *abfd,
				   struct bfd_link_info *info,
				   bool *need_layout)
{
  unsigned int count;
  struct elf_segment_map *m;
  asection **sections = NULL;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  bool no_user_phdrs;

  no_user_phdrs = elf_seg_map (abfd) == NULL;

  if (info != NULL)
    {
      info->user_phdrs = !no_user_phdrs;

      /* Size the relative relocations if DT_RELR is enabled.  */
      if (info->enable_dt_relr
	  && need_layout != NULL
	  && bed->size_relative_relocs
	  && !bed->size_relative_relocs (info, need_layout))
	info->callbacks->einfo
	  (_("%F%P: failed to size relative relocations\n"));
    }

  if (no_user_phdrs && bfd_count_sections (abfd) != 0)
    {
      asection *s;
      unsigned int i;
      struct elf_segment_map *mfirst;
      struct elf_segment_map **pm;
      asection *last_hdr;
      bfd_vma last_size;
      unsigned int hdr_index;
      bfd_vma maxpagesize;
      asection **hdrpp;
      bool phdr_in_segment;
      bool writable;
      bool executable;
      unsigned int tls_count = 0;
      asection *first_tls = NULL;
      asection *first_mbind = NULL;
      asection *dynsec, *eh_frame_hdr;
      asection *sframe;
      size_t amt;
      bfd_vma addr_mask, wrap_to = 0;  /* Bytes.  */
      bfd_size_type phdr_size;  /* Octets/bytes.  */
      unsigned int opb = bfd_octets_per_byte (abfd, NULL);

      /* Select the allocated sections, and sort them.  */

      amt = bfd_count_sections (abfd) * sizeof (asection *);
      sections = (asection **) bfd_malloc (amt);
      if (sections == NULL)
	goto error_return;

      /* Calculate top address, avoiding undefined behaviour of shift
	 left operator when shift count is equal to size of type
	 being shifted.  */
      addr_mask = ((bfd_vma) 1 << (bfd_arch_bits_per_address (abfd) - 1)) - 1;
      addr_mask = (addr_mask << 1) + 1;

      i = 0;
      for (s = abfd->sections; s != NULL; s = s->next)
	{
	  if ((s->flags & SEC_ALLOC) != 0)
	    {
	      /* target_index is unused until bfd_elf_final_link
		 starts output of section symbols.  Use it to make
		 qsort stable.  */
	      s->target_index = i;
	      sections[i] = s;
	      ++i;
	      /* A wrapping section potentially clashes with header.  */
	      if (((s->lma + s->size / opb) & addr_mask) < (s->lma & addr_mask))
		wrap_to = (s->lma + s->size / opb) & addr_mask;
	    }
	}
      BFD_ASSERT (i <= bfd_count_sections (abfd));
      count = i;

      qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);

      phdr_size = elf_program_header_size (abfd);
      if (phdr_size == (bfd_size_type) -1)
	phdr_size = get_program_header_size (abfd, info);
      phdr_size += bed->s->sizeof_ehdr;
      /* phdr_size is compared to LMA values which are in bytes.  */
      phdr_size /= opb;
      if (info != NULL)
	maxpagesize = info->maxpagesize;
      else
	maxpagesize = bed->maxpagesize;
      if (maxpagesize == 0)
	maxpagesize = 1;
      phdr_in_segment = info != NULL && info->load_phdrs;
      if (count != 0
	  && (((sections[0]->lma & addr_mask) & (maxpagesize - 1))
	      >= (phdr_size & (maxpagesize - 1))))
	/* For compatibility with old scripts that may not be using
	   SIZEOF_HEADERS, add headers when it looks like space has
	   been left for them.  */
	phdr_in_segment = true;

      /* Build the mapping.  */
      mfirst = NULL;
      pm = &mfirst;

      /* If we have a .interp section, then create a PT_PHDR segment for
	 the program headers and a PT_INTERP segment for the .interp
	 section.  */
      s = bfd_get_section_by_name (abfd, ".interp");
      if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->size != 0)
	{
	  amt = sizeof (struct elf_segment_map);
	  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_PHDR;
	  m->p_flags = PF_R;
	  m->p_flags_valid = 1;
	  m->includes_phdrs = 1;
	  phdr_in_segment = true;
	  *pm = m;
	  pm = &m->next;

	  amt = sizeof (struct elf_segment_map);
	  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_INTERP;
	  m->count = 1;
	  m->sections[0] = s;

	  *pm = m;
	  pm = &m->next;
	}

      /* Look through the sections.  We put sections in the same program
	 segment when the start of the second section can be placed within
	 a few bytes of the end of the first section.  */
      last_hdr = NULL;
      last_size = 0;
      hdr_index = 0;
      writable = false;
      executable = false;
      dynsec = bfd_get_section_by_name (abfd, ".dynamic");
      if (dynsec != NULL
	  && (dynsec->flags & SEC_LOAD) == 0)
	dynsec = NULL;

      if ((abfd->flags & D_PAGED) == 0)
	phdr_in_segment = false;

      /* Deal with -Ttext or something similar such that the first section
	 is not adjacent to the program headers.  This is an
	 approximation, since at this point we don't know exactly how many
	 program headers we will need.  */
      if (phdr_in_segment && count > 0)
	{
	  bfd_vma phdr_lma;  /* Bytes.  */
	  bool separate_phdr = false;

	  phdr_lma = (sections[0]->lma - phdr_size) & addr_mask & -maxpagesize;
	  if (info != NULL
	      && info->separate_code
	      && (sections[0]->flags & SEC_CODE) != 0)
	    {
	      /* If data sections should be separate from code and
		 thus not executable, and the first section is
		 executable then put the file and program headers in
		 their own PT_LOAD.  */
	      separate_phdr = true;
	      if ((((phdr_lma + phdr_size - 1) & addr_mask & -maxpagesize)
		   == (sections[0]->lma & addr_mask & -maxpagesize)))
		{
		  /* The file and program headers are currently on the
		     same page as the first section.  Put them on the
		     previous page if we can.  */
		  if (phdr_lma >= maxpagesize)
		    phdr_lma -= maxpagesize;
		  else
		    separate_phdr = false;
		}
	    }
	  if ((sections[0]->lma & addr_mask) < phdr_lma
	      || (sections[0]->lma & addr_mask) < phdr_size)
	    /* If file and program headers would be placed at the end
	       of memory then it's probably better to omit them.  */
	    phdr_in_segment = false;
	  else if (phdr_lma < wrap_to)
	    /* If a section wraps around to where we'll be placing
	       file and program headers, then the headers will be
	       overwritten.  */
	    phdr_in_segment = false;
	  else if (separate_phdr)
	    {
	      m = make_mapping (abfd, sections, 0, 0, phdr_in_segment);
	      if (m == NULL)
		goto error_return;
	      m->p_paddr = phdr_lma * opb;
	      m->p_vaddr_offset
		= (sections[0]->vma - phdr_size) & addr_mask & -maxpagesize;
	      m->p_paddr_valid = 1;
	      *pm = m;
	      pm = &m->next;
	      phdr_in_segment = false;
	    }
	}

      for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
	{
	  asection *hdr;
	  bool new_segment;

	  hdr = *hdrpp;

	  /* See if this section and the last one will fit in the same
	     segment.  */

	  if (last_hdr == NULL)
	    {
	      /* If we don't have a segment yet, then we don't need a new
		 one (we build the last one after this loop).  */
	      new_segment = false;
	    }
	  else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
	    {
	      /* If this section has a different relation between the
		 virtual address and the load address, then we need a new
		 segment.  */
	      new_segment = true;
	    }
	  else if (hdr->lma < last_hdr->lma + last_size
		   || last_hdr->lma + last_size < last_hdr->lma)
	    {
	      /* If this section has a load address that makes it overlap
		 the previous section, then we need a new segment.  */
	      new_segment = true;
	    }
	  else if ((abfd->flags & D_PAGED) != 0
		   && (((last_hdr->lma + last_size - 1) & -maxpagesize)
		       == (hdr->lma & -maxpagesize)))
	    {
	      /* If we are demand paged then we can't map two disk
		 pages onto the same memory page.  */
	      new_segment = false;
	    }
	  /* In the next test we have to be careful when last_hdr->lma is close
	     to the end of the address space.  If the aligned address wraps
	     around to the start of the address space, then there are no more
	     pages left in memory and it is OK to assume that the current
	     section can be included in the current segment.  */
	  else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize)
		    + maxpagesize > last_hdr->lma)
		   && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize)
		       + maxpagesize <= hdr->lma))
	    {
	      /* If putting this section in this segment would force us to
		 skip a page in the segment, then we need a new segment.  */
	      new_segment = true;
	    }
	  else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
		   && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
	    {
	      /* We don't want to put a loaded section after a
		 nonloaded (ie. bss style) section in the same segment
		 as that will force the non-loaded section to be loaded.
		 Consider .tbss sections as loaded for this purpose.  */
	      new_segment = true;
	    }
	  else if ((abfd->flags & D_PAGED) == 0)
	    {
	      /* If the file is not demand paged, which means that we
		 don't require the sections to be correctly aligned in the
		 file, then there is no other reason for a new segment.  */
	      new_segment = false;
	    }
	  else if (info != NULL
		   && info->separate_code
		   && executable != ((hdr->flags & SEC_CODE) != 0))
	    {
	      new_segment = true;
	    }
	  else if (! writable
		   && (hdr->flags & SEC_READONLY) == 0)
	    {
	      /* We don't want to put a writable section in a read only
		 segment.  */
	      new_segment = true;
	    }
	  else
	    {
	      /* Otherwise, we can use the same segment.  */
	      new_segment = false;
	    }

	  /* Allow interested parties a chance to override our decision.  */
	  if (last_hdr != NULL
	      && info != NULL
	      && info->callbacks->override_segment_assignment != NULL)
	    new_segment
	      = info->callbacks->override_segment_assignment (info, abfd, hdr,
							      last_hdr,
							      new_segment);

	  if (! new_segment)
	    {
	      if ((hdr->flags & SEC_READONLY) == 0)
		writable = true;
	      if ((hdr->flags & SEC_CODE) != 0)
		executable = true;
	      last_hdr = hdr;
	      /* .tbss sections effectively have zero size.  */
	      last_size = (!IS_TBSS (hdr) ? hdr->size : 0) / opb;
	      continue;
	    }

	  /* We need a new program segment.  We must create a new program
	     header holding all the sections from hdr_index until hdr.  */

	  m = make_mapping (abfd, sections, hdr_index, i, phdr_in_segment);
	  if (m == NULL)
	    goto error_return;

	  *pm = m;
	  pm = &m->next;

	  if ((hdr->flags & SEC_READONLY) == 0)
	    writable = true;
	  else
	    writable = false;

	  if ((hdr->flags & SEC_CODE) == 0)
	    executable = false;
	  else
	    executable = true;

	  last_hdr = hdr;
	  /* .tbss sections effectively have zero size.  */
	  last_size = (!IS_TBSS (hdr) ? hdr->size : 0) / opb;
	  hdr_index = i;
	  phdr_in_segment = false;
	}

      /* Create a final PT_LOAD program segment, but not if it's just
	 for .tbss.  */
      if (last_hdr != NULL
	  && (i - hdr_index != 1
	      || !IS_TBSS (last_hdr)))
	{
	  m = make_mapping (abfd, sections, hdr_index, i, phdr_in_segment);
	  if (m == NULL)
	    goto error_return;

	  *pm = m;
	  pm = &m->next;
	}

      /* If there is a .dynamic section, throw in a PT_DYNAMIC segment.  */
      if (dynsec != NULL)
	{
	  m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
	  if (m == NULL)
	    goto error_return;
	  *pm = m;
	  pm = &m->next;
	}

      /* For each batch of consecutive loadable SHT_NOTE  sections,
	 add a PT_NOTE segment.  We don't use bfd_get_section_by_name,
	 because if we link together nonloadable .note sections and
	 loadable .note sections, we will generate two .note sections
	 in the output file.  */
      for (s = abfd->sections; s != NULL; s = s->next)
	{
	  if ((s->flags & SEC_LOAD) != 0
	      && elf_section_type (s) == SHT_NOTE)
	    {
	      asection *s2;
	      unsigned int alignment_power = s->alignment_power;

	      count = 1;
	      for (s2 = s; s2->next != NULL; s2 = s2->next)
		{
		  if (s2->next->alignment_power == alignment_power
		      && (s2->next->flags & SEC_LOAD) != 0
		      && elf_section_type (s2->next) == SHT_NOTE
		      && align_power (s2->lma + s2->size / opb,
				      alignment_power)
		      == s2->next->lma)
		    count++;
		  else
		    break;
		}
	      amt = sizeof (struct elf_segment_map) - sizeof (asection *);
	      amt += count * sizeof (asection *);
	      m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	      if (m == NULL)
		goto error_return;
	      m->next = NULL;
	      m->p_type = PT_NOTE;
	      m->count = count;
	      while (count > 1)
		{
		  m->sections[m->count - count--] = s;
		  BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0);
		  s = s->next;
		}
	      m->sections[m->count - 1] = s;
	      BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0);
	      *pm = m;
	      pm = &m->next;
	    }
	  if (s->flags & SEC_THREAD_LOCAL)
	    {
	      if (! tls_count)
		first_tls = s;
	      tls_count++;
	    }
	  if (first_mbind == NULL
	      && (elf_section_flags (s) & SHF_GNU_MBIND) != 0)
	    first_mbind = s;
	}

      /* If there are any SHF_TLS output sections, add PT_TLS segment.  */
      if (tls_count > 0)
	{
	  amt = sizeof (struct elf_segment_map) - sizeof (asection *);
	  amt += tls_count * sizeof (asection *);
	  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_TLS;
	  m->count = tls_count;
	  /* Mandated PF_R.  */
	  m->p_flags = PF_R;
	  m->p_flags_valid = 1;
	  s = first_tls;
	  for (i = 0; i < tls_count; ++i)
	    {
	      if ((s->flags & SEC_THREAD_LOCAL) == 0)
		{
		  _bfd_error_handler
		    (_("%pB: TLS sections are not adjacent:"), abfd);
		  s = first_tls;
		  i = 0;
		  while (i < tls_count)
		    {
		      if ((s->flags & SEC_THREAD_LOCAL) != 0)
			{
			  _bfd_error_handler (_("	    TLS: %pA"), s);
			  i++;
			}
		      else
			_bfd_error_handler (_("	non-TLS: %pA"), s);
		      s = s->next;
		    }
		  bfd_set_error (bfd_error_bad_value);
		  goto error_return;
		}
	      m->sections[i] = s;
	      s = s->next;
	    }

	  *pm = m;
	  pm = &m->next;
	}

      if (first_mbind
	  && (abfd->flags & D_PAGED) != 0
	  && (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0)
	for (s = first_mbind; s != NULL; s = s->next)
	  if ((elf_section_flags (s) & SHF_GNU_MBIND) != 0
	      && elf_section_data (s)->this_hdr.sh_info <= PT_GNU_MBIND_NUM)
	    {
	      /* Mandated PF_R.  */
	      unsigned long p_flags = PF_R;
	      if ((s->flags & SEC_READONLY) == 0)
		p_flags |= PF_W;
	      if ((s->flags & SEC_CODE) != 0)
		p_flags |= PF_X;

	      amt = sizeof (struct elf_segment_map) + sizeof (asection *);
	      m = bfd_zalloc (abfd, amt);
	      if (m == NULL)
		goto error_return;
	      m->next = NULL;
	      m->p_type = (PT_GNU_MBIND_LO
			   + elf_section_data (s)->this_hdr.sh_info);
	      m->count = 1;
	      m->p_flags_valid = 1;
	      m->sections[0] = s;
	      m->p_flags = p_flags;

	      *pm = m;
	      pm = &m->next;
	    }

      s = bfd_get_section_by_name (abfd,
				   NOTE_GNU_PROPERTY_SECTION_NAME);
      if (s != NULL && s->size != 0)
	{
	  amt = sizeof (struct elf_segment_map) + sizeof (asection *);
	  m = bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_GNU_PROPERTY;
	  m->count = 1;
	  m->p_flags_valid = 1;
	  m->sections[0] = s;
	  m->p_flags = PF_R;
	  *pm = m;
	  pm = &m->next;
	}

      /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
	 segment.  */
      eh_frame_hdr = elf_eh_frame_hdr (info);
      if (eh_frame_hdr != NULL
	  && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
	{
	  amt = sizeof (struct elf_segment_map);
	  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_GNU_EH_FRAME;
	  m->count = 1;
	  m->sections[0] = eh_frame_hdr->output_section;

	  *pm = m;
	  pm = &m->next;
	}

      /* If there is a .sframe section, throw in a PT_GNU_SFRAME
	 segment.  */
      sframe = elf_sframe (abfd);
      if (sframe != NULL
	  && (sframe->output_section->flags & SEC_LOAD) != 0
	  && sframe->size != 0)
	{
	  amt = sizeof (struct elf_segment_map);
	  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_GNU_SFRAME;
	  m->count = 1;
	  m->sections[0] = sframe->output_section;

	  *pm = m;
	  pm = &m->next;
	}

      if (elf_stack_flags (abfd))
	{
	  amt = sizeof (struct elf_segment_map);
	  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	  if (m == NULL)
	    goto error_return;
	  m->next = NULL;
	  m->p_type = PT_GNU_STACK;
	  m->p_flags = elf_stack_flags (abfd);
	  m->p_align = bed->stack_align;
	  m->p_flags_valid = 1;
	  m->p_align_valid = m->p_align != 0;
	  if (info->stacksize > 0)
	    {
	      m->p_size = info->stacksize;
	      m->p_size_valid = 1;
	    }

	  *pm = m;
	  pm = &m->next;
	}

      if (info != NULL && info->relro)
	{
	  for (m = mfirst; m != NULL; m = m->next)
	    {
	      if (m->p_type == PT_LOAD
		  && m->count != 0
		  && m->sections[0]->vma >= info->relro_start
		  && m->sections[0]->vma < info->relro_end)
		{
		  i = m->count;
		  while (--i != (unsigned) -1)
		    {
		      if (m->sections[i]->size > 0
			  && (m->sections[i]->flags & SEC_LOAD) != 0
			  && (m->sections[i]->flags & SEC_HAS_CONTENTS) != 0)
			break;
		    }

		  if (i != (unsigned) -1)
		    break;
		}
	    }

	  /* Make a PT_GNU_RELRO segment only when it isn't empty.  */
	  if (m != NULL)
	    {
	      amt = sizeof (struct elf_segment_map);
	      m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
	      if (m == NULL)
		goto error_return;
	      m->next = NULL;
	      m->p_type = PT_GNU_RELRO;
	      *pm = m;
	      pm = &m->next;
	    }
	}

      free (sections);
      elf_seg_map (abfd) = mfirst;
    }

  if (!elf_modify_segment_map (abfd, info, no_user_phdrs))
    return false;

  for (count = 0, m = elf_seg_map (abfd); m != NULL; m = m->next)
    ++count;
  elf_program_header_size (abfd) = count * bed->s->sizeof_phdr;

  return true;

 error_return:
  free (sections);
  return false;
}

/* Sort sections by address.  */

static int
elf_sort_sections (const void *arg1, const void *arg2)
{
  const asection *sec1 = *(const asection **) arg1;
  const asection *sec2 = *(const asection **) arg2;
  bfd_size_type size1, size2;

  /* Sort by LMA first, since this is the address used to
     place the section into a segment.  */
  if (sec1->lma < sec2->lma)
    return -1;
  else if (sec1->lma > sec2->lma)
    return 1;

  /* Then sort by VMA.  Normally the LMA and the VMA will be
     the same, and this will do nothing.  */
  if (sec1->vma < sec2->vma)
    return -1;
  else if (sec1->vma > sec2->vma)
    return 1;

  /* Put !SEC_LOAD sections after SEC_LOAD ones.  */

#define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 \
		  && (x)->size != 0)

  if (TOEND (sec1))
    {
      if (!TOEND (sec2))
	return 1;
    }
  else if (TOEND (sec2))
    return -1;

#undef TOEND

  /* Sort by size, to put zero sized sections
     before others at the same address.  */

  size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0;
  size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0;

  if (size1 < size2)
    return -1;
  if (size1 > size2)
    return 1;

  return sec1->target_index - sec2->target_index;
}

/* This qsort comparison functions sorts PT_LOAD segments first and
   by p_paddr, for assign_file_positions_for_load_sections.  */

static int
elf_sort_segments (const void *arg1, const void *arg2)
{
  const struct elf_segment_map *m1 = *(const struct elf_segment_map **) arg1;
  const struct elf_segment_map *m2 = *(const struct elf_segment_map **) arg2;

  if (m1->p_type != m2->p_type)
    {
      if (m1->p_type == PT_NULL)
	return 1;
      if (m2->p_type == PT_NULL)
	return -1;
      return m1->p_type < m2->p_type ? -1 : 1;
    }
  if (m1->includes_filehdr != m2->includes_filehdr)
    return m1->includes_filehdr ? -1 : 1;
  if (m1->no_sort_lma != m2->no_sort_lma)
    return m1->no_sort_lma ? -1 : 1;
  if (m1->p_type == PT_LOAD && !m1->no_sort_lma)
    {
      bfd_vma lma1, lma2;  /* Octets.  */
      lma1 = 0;
      if (m1->p_paddr_valid)
	lma1 = m1->p_paddr;
      else if (m1->count != 0)
	{
	  unsigned int opb = bfd_octets_per_byte (m1->sections[0]->owner,
						  m1->sections[0]);
	  lma1 = (m1->sections[0]->lma + m1->p_vaddr_offset) * opb;
	}
      lma2 = 0;
      if (m2->p_paddr_valid)
	lma2 = m2->p_paddr;
      else if (m2->count != 0)
	{
	  unsigned int opb = bfd_octets_per_byte (m2->sections[0]->owner,
						  m2->sections[0]);
	  lma2 = (m2->sections[0]->lma + m2->p_vaddr_offset) * opb;
	}
      if (lma1 != lma2)
	return lma1 < lma2 ? -1 : 1;
    }
  if (m1->idx != m2->idx)
    return m1->idx < m2->idx ? -1 : 1;
  return 0;
}

/* Ian Lance Taylor writes:

   We shouldn't be using % with a negative signed number.  That's just
   not good.  We have to make sure either that the number is not
   negative, or that the number has an unsigned type.  When the types
   are all the same size they wind up as unsigned.  When file_ptr is a
   larger signed type, the arithmetic winds up as signed long long,
   which is wrong.

   What we're trying to say here is something like ``increase OFF by
   the least amount that will cause it to be equal to the VMA modulo
   the page size.''  */
/* In other words, something like:

   vma_offset = m->sections[0]->vma % bed->maxpagesize;
   off_offset = off % bed->maxpagesize;
   if (vma_offset < off_offset)
     adjustment = vma_offset + bed->maxpagesize - off_offset;
   else
     adjustment = vma_offset - off_offset;

   which can be collapsed into the expression below.  */

static file_ptr
vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize)
{
  /* PR binutils/16199: Handle an alignment of zero.  */
  if (maxpagesize == 0)
    maxpagesize = 1;
  return ((vma - off) % maxpagesize);
}

static void
print_segment_map (const struct elf_segment_map *m)
{
  unsigned int j;
  const char *pt = get_segment_type (m->p_type);
  char buf[32];

  if (pt == NULL)
    {
      if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC)
	sprintf (buf, "LOPROC+%7.7x",
		 (unsigned int) (m->p_type - PT_LOPROC));
      else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS)
	sprintf (buf, "LOOS+%7.7x",
		 (unsigned int) (m->p_type - PT_LOOS));
      else
	snprintf (buf, sizeof (buf), "%8.8x",
		  (unsigned int) m->p_type);
      pt = buf;
    }
  fflush (stdout);
  fprintf (stderr, "%s:", pt);
  for (j = 0; j < m->count; j++)
    fprintf (stderr, " %s", m->sections [j]->name);
  putc ('\n',stderr);
  fflush (stderr);
}

/* Assign file positions to the sections based on the mapping from
   sections to segments.  This function also sets up some fields in
   the file header.  */

static bool
assign_file_positions_for_load_sections (bfd *abfd,
					 struct bfd_link_info *link_info)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  struct elf_segment_map *m;
  struct elf_segment_map *phdr_load_seg;
  Elf_Internal_Phdr *phdrs;
  Elf_Internal_Phdr *p;
  file_ptr off;  /* Octets.  */
  bfd_size_type maxpagesize;
  unsigned int alloc, actual;
  unsigned int i, j;
  struct elf_segment_map **sorted_seg_map;
  unsigned int opb = bfd_octets_per_byte (abfd, NULL);

  if (link_info == NULL
      && !_bfd_elf_map_sections_to_segments (abfd, link_info, NULL))
    return false;

  alloc = 0;
  for (m = elf_seg_map (abfd); m != NULL; m = m->next)
    m->idx = alloc++;

  if (alloc)
    {
      elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
      elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
    }
  else
    {
      /* PR binutils/12467.  */
      elf_elfheader (abfd)->e_phoff = 0;
      elf_elfheader (abfd)->e_phentsize = 0;
    }

  elf_elfheader (abfd)->e_phnum = alloc;

  if (elf_program_header_size (abfd) == (bfd_size_type) -1)
    {
      actual = alloc;
      elf_program_header_size (abfd) = alloc * bed->s->sizeof_phdr;
    }
  else
    {
      actual = elf_program_header_size (abfd) / bed->s->sizeof_phdr;
      BFD_ASSERT (elf_program_header_size (abfd)
		  == actual * bed->s->sizeof_phdr);
      BFD_ASSERT (actual >= alloc);
    }

  if (alloc == 0)
    {
      elf_next_file_pos (abfd) = bed->s->sizeof_ehdr;
      return true;
    }

  /* We're writing the size in elf_program_header_size (abfd),
     see assign_file_positions_except_relocs, so make sure we have
     that amount allocated, with trailing space cleared.
     The variable alloc contains the computed need, while
     elf_program_header_size (abfd) contains the size used for the
     layout.
     See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments
     where the layout is forced to according to a larger size in the
     last iterations for the testcase ld-elf/header.  */
  phdrs = bfd_zalloc (abfd, (actual * sizeof (*phdrs)
			     + alloc * sizeof (*sorted_seg_map)));
  sorted_seg_map = (struct elf_segment_map **) (phdrs + actual);
  elf_tdata (abfd)->phdr = phdrs;
  if (phdrs == NULL)
    return false;

  for (m = elf_seg_map (abfd), j = 0; m != NULL; m = m->next, j++)
    {
      sorted_seg_map[j] = m;
      /* If elf_segment_map is not from map_sections_to_segments, the
	 sections may not be correctly ordered.  NOTE: sorting should
	 not be done to the PT_NOTE section of a corefile, which may
	 contain several pseudo-sections artificially created by bfd.
	 Sorting these pseudo-sections breaks things badly.  */
      if (m->count > 1
	  && !(elf_elfheader (abfd)->e_type == ET_CORE
	       && m->p_type == PT_NOTE))
	{
	  for (i = 0; i < m->count; i++)
	    m->sections[i]->target_index = i;
	  qsort (m->sections, (size_t) m->count, sizeof (asection *),
		 elf_sort_sections);
	}
    }
  if (alloc > 1)
    qsort (sorted_seg_map, alloc, sizeof (*sorted_seg_map),
	   elf_sort_segments);

  maxpagesize = 1;
  if ((abfd->flags & D_PAGED) != 0)
    {
      if (link_info != NULL)
	maxpagesize = link_info->maxpagesize;
      else
	maxpagesize = bed->maxpagesize;
    }

  /* Sections must map to file offsets past the ELF file header.  */
  off = bed->s->sizeof_ehdr;
  /* And if one of the PT_LOAD headers doesn't include the program
     headers then we'll be mapping program headers in the usual
     position after the ELF file header.  */
  phdr_load_seg = NULL;
  for (j = 0; j < alloc; j++)
    {
      m = sorted_seg_map[j];
      if (m->p_type != PT_LOAD)
	break;
      if (m->includes_phdrs)
	{
	  phdr_load_seg = m;
	  break;
	}
    }
  if (phdr_load_seg == NULL)
    off += actual * bed->s->sizeof_phdr;

  for (j = 0; j < alloc; j++)
    {
      asection **secpp;
      bfd_vma off_adjust;  /* Octets.  */
      bool no_contents;
      bfd_size_type p_align;
      bool p_align_p;

      /* An ELF segment (described by Elf_Internal_Phdr) may contain a
	 number of sections with contents contributing to both p_filesz
	 and p_memsz, followed by a number of sections with no contents
	 that just contribute to p_memsz.  In this loop, OFF tracks next
	 available file offset for PT_LOAD and PT_NOTE segments.  */
      m = sorted_seg_map[j];
      p = phdrs + m->idx;
      p->p_type = m->p_type;
      p->p_flags = m->p_flags;
      p_align = bed->p_align;
      p_align_p = false;

      if (m->count == 0)
	p->p_vaddr = m->p_vaddr_offset * opb;
      else
	p->p_vaddr = (m->sections[0]->vma + m->p_vaddr_offset) * opb;

      if (m->p_paddr_valid)
	p->p_paddr = m->p_paddr;
      else if (m->count == 0)
	p->p_paddr = 0;
      else
	p->p_paddr = (m->sections[0]->lma + m->p_vaddr_offset) * opb;

      if (p->p_type == PT_LOAD
	  && (abfd->flags & D_PAGED) != 0)
	{
	  /* p_align in demand paged PT_LOAD segments effectively stores
	     the maximum page size.  When copying an executable with
	     objcopy, we set m->p_align from the input file.  Use this
	     value for maxpagesize rather than bed->maxpagesize, which
	     may be different.  Note that we use maxpagesize for PT_TLS
	     segment alignment later in this function, so we are relying
	     on at least one PT_LOAD segment appearing before a PT_TLS
	     segment.  */
	  if (m->p_align_valid)
	    maxpagesize = m->p_align;
	  else if (p_align != 0
		   && (link_info == NULL
		       || !link_info->maxpagesize_is_set))
	    /* Set p_align to the default p_align value while laying
	       out segments aligning to the maximum page size or the
	       largest section alignment.  The run-time loader can
	       align segments to the default p_align value or the
	       maximum page size, depending on system page size.  */
	    p_align_p = true;

	  p->p_align = maxpagesize;
	}
      else if (m->p_align_valid)
	p->p_align = m->p_align;
      else if (m->count == 0)
	p->p_align = 1 << bed->s->log_file_align;

      if (m == phdr_load_seg)
	{
	  if (!m->includes_filehdr)
	    p->p_offset = off;
	  off += actual * bed->s->sizeof_phdr;
	}

      no_contents = false;
      off_adjust = 0;
      if (p->p_type == PT_LOAD
	  && m->count > 0)
	{
	  bfd_size_type align;  /* Bytes.  */
	  unsigned int align_power = 0;

	  if (m->p_align_valid)
	    align = p->p_align;
	  else
	    {
	      for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
		{
		  unsigned int secalign;

		  secalign = bfd_section_alignment (*secpp);
		  if (secalign > align_power)
		    align_power = secalign;
		}
	      align = (bfd_size_type) 1 << align_power;
	      if (align < maxpagesize)
		{
		  /* If a section requires alignment higher than the
		     default p_align value, don't set p_align to the
		     default p_align value.  */
		  if (align > p_align)
		    p_align_p = false;
		  align = maxpagesize;
		}
	      else
		{
		  /* If a section requires alignment higher than the
		     maximum page size, set p_align to the section
		     alignment.  */
		  p_align_p = true;
		  p_align = align;
		}
	    }

	  for (i = 0; i < m->count; i++)
	    if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
	      /* If we aren't making room for this section, then
		 it must be SHT_NOBITS regardless of what we've
		 set via struct bfd_elf_special_section.  */
	      elf_section_type (m->sections[i]) = SHT_NOBITS;

	  /* Find out whether this segment contains any loadable
	     sections.  */
	  no_contents = true;
	  for (i = 0; i < m->count; i++)
	    if (elf_section_type (m->sections[i]) != SHT_NOBITS)
	      {
		no_contents = false;
		break;
	      }

	  off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align * opb);

	  /* Broken hardware and/or kernel require that files do not
	     map the same page with different permissions on some hppa
	     processors.  */
	  if (j != 0
	      && (abfd->flags & D_PAGED) != 0
	      && bed->no_page_alias
	      && (off & (maxpagesize - 1)) != 0
	      && ((off & -maxpagesize)
		  == ((off + off_adjust) & -maxpagesize)))
	    off_adjust += maxpagesize;
	  off += off_adjust;
	  if (no_contents)
	    {
	      /* We shouldn't need to align the segment on disk since
		 the segment doesn't need file space, but the gABI
		 arguably requires the alignment and glibc ld.so
		 checks it.  So to comply with the alignment
		 requirement but not waste file space, we adjust
		 p_offset for just this segment.  (OFF_ADJUST is
		 subtracted from OFF later.)  This may put p_offset
		 past the end of file, but that shouldn't matter.  */
	    }
	  else
	    off_adjust = 0;
	}
      /* Make sure the .dynamic section is the first section in the
	 PT_DYNAMIC segment.  */
      else if (p->p_type == PT_DYNAMIC
	       && m->count > 1
	       && strcmp (m->sections[0]->name, ".dynamic") != 0)
	{
	  _bfd_error_handler
	    (_("%pB: The first section in the PT_DYNAMIC segment"
	       " is not the .dynamic section"),
	     abfd);
	  bfd_set_error (bfd_error_bad_value);
	  return false;
	}
      /* Set the note section type to SHT_NOTE.  */
      else if (p->p_type == PT_NOTE)
	for (i = 0; i < m->count; i++)
	  elf_section_type (m->sections[i]) = SHT_NOTE;

      if (m->includes_filehdr)
	{
	  if (!m->p_flags_valid)
	    p->p_flags |= PF_R;
	  p->p_filesz = bed->s->sizeof_ehdr;
	  p->p_memsz = bed->s->sizeof_ehdr;
	  if (p->p_type == PT_LOAD)
	    {
	      if (m->count > 0)
		{
		  if (p->p_vaddr < (bfd_vma) off
		      || (!m->p_paddr_valid
			  && p->p_paddr < (bfd_vma) off))
		    {
		      _bfd_error_handler
			(_("%pB: not enough room for program headers,"
			   " try linking with -N"),
			 abfd);
		      bfd_set_error (bfd_error_bad_value);
		      return false;
		    }
		  p->p_vaddr -= off;
		  if (!m->p_paddr_valid)
		    p->p_paddr -= off;
		}
	    }
	  else if (sorted_seg_map[0]->includes_filehdr)
	    {
	      Elf_Internal_Phdr *filehdr = phdrs + sorted_seg_map[0]->idx;
	      p->p_vaddr = filehdr->p_vaddr;
	      if (!m->p_paddr_valid)
		p->p_paddr = filehdr->p_paddr;
	    }
	}

      if (m->includes_phdrs)
	{
	  if (!m->p_flags_valid)
	    p->p_flags |= PF_R;
	  p->p_filesz += actual * bed->s->sizeof_phdr;
	  p->p_memsz += actual * bed->s->sizeof_phdr;
	  if (!m->includes_filehdr)
	    {
	      if (p->p_type == PT_LOAD)
		{
		  elf_elfheader (abfd)->e_phoff = p->p_offset;
		  if (m->count > 0)
		    {
		      p->p_vaddr -= off - p->p_offset;
		      if (!m->p_paddr_valid)
			p->p_paddr -= off - p->p_offset;
		    }
		}
	      else if (phdr_load_seg != NULL)
		{
		  Elf_Internal_Phdr *phdr = phdrs + phdr_load_seg->idx;
		  bfd_vma phdr_off = 0;  /* Octets.  */
		  if (phdr_load_seg->includes_filehdr)
		    phdr_off = bed->s->sizeof_ehdr;
		  p->p_vaddr = phdr->p_vaddr + phdr_off;
		  if (!m->p_paddr_valid)
		    p->p_paddr = phdr->p_paddr + phdr_off;
		  p->p_offset = phdr->p_offset + phdr_off;
		}
	      else
		p->p_offset = bed->s->sizeof_ehdr;
	    }
	}

      if (p->p_type == PT_LOAD
	  || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
	{
	  if (!m->includes_filehdr && !m->includes_phdrs)
	    {
	      p->p_offset = off;
	      if (no_contents)
		{
		  /* Put meaningless p_offset for PT_LOAD segments
		     without file contents somewhere within the first
		     page, in an attempt to not point past EOF.  */
		  bfd_size_type align = maxpagesize;
		  if (align < p->p_align)
		    align = p->p_align;
		  if (align < 1)
		    align = 1;
		  p->p_offset = off % align;
		}
	    }
	  else
	    {
	      file_ptr adjust;  /* Octets.  */

	      adjust = off - (p->p_offset + p->p_filesz);
	      if (!no_contents)
		p->p_filesz += adjust;
	      p->p_memsz += adjust;
	    }
	}

      /* Set up p_filesz, p_memsz, p_align and p_flags from the section
	 maps.  Set filepos for sections in PT_LOAD segments, and in
	 core files, for sections in PT_NOTE segments.
	 assign_file_positions_for_non_load_sections will set filepos
	 for other sections and update p_filesz for other segments.  */
      for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
	{
	  asection *sec;
	  bfd_size_type align;
	  Elf_Internal_Shdr *this_hdr;

	  sec = *secpp;
	  this_hdr = &elf_section_data (sec)->this_hdr;
	  align = (bfd_size_type) 1 << bfd_section_alignment (sec);

	  if ((p->p_type == PT_LOAD
	       || p->p_type == PT_TLS)
	      && (this_hdr->sh_type != SHT_NOBITS
		  || ((this_hdr->sh_flags & SHF_ALLOC) != 0
		      && ((this_hdr->sh_flags & SHF_TLS) == 0
			  || p->p_type == PT_TLS))))
	    {
	      bfd_vma p_start = p->p_paddr;		/* Octets.  */
	      bfd_vma p_end = p_start + p->p_memsz;	/* Octets.  */
	      bfd_vma s_start = sec->lma * opb;		/* Octets.  */
	      bfd_vma adjust = s_start - p_end;		/* Octets.  */

	      if (adjust != 0
		  && (s_start < p_end
		      || p_end < p_start))
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB: section %pA lma %#" PRIx64
		       " adjusted to %#" PRIx64),
		     abfd, sec, (uint64_t) s_start / opb,
		     (uint64_t) p_end / opb);
		  adjust = 0;
		  sec->lma = p_end / opb;
		}
	      p->p_memsz += adjust;

	      if (p->p_type == PT_LOAD)
		{
		  if (this_hdr->sh_type != SHT_NOBITS)
		    {
		      off_adjust = 0;
		      if (p->p_filesz + adjust < p->p_memsz)
			{
			  /* We have a PROGBITS section following NOBITS ones.
			     Allocate file space for the NOBITS section(s).
			     We don't need to write out the zeros, posix
			     fseek past the end of data already written
			     followed by a write at that location is
			     guaranteed to result in zeros being read
			     from the gap.  */
			  adjust = p->p_memsz - p->p_filesz;
			}
		    }
		  /* We only adjust sh_offset in SHT_NOBITS sections
		     as would seem proper for their address when the
		     section is first in the segment.  sh_offset
		     doesn't really have any significance for
		     SHT_NOBITS anyway, apart from a notional position
		     relative to other sections.  Historically we
		     didn't bother with adjusting sh_offset and some
		     programs depend on it not being adjusted.  See
		     pr12921 and pr25662.  */
		  if (this_hdr->sh_type != SHT_NOBITS || i == 0)
		    {
		      off += adjust;
		      if (this_hdr->sh_type == SHT_NOBITS)
			off_adjust += adjust;
		    }
		}
	      if (this_hdr->sh_type != SHT_NOBITS)
		p->p_filesz += adjust;
	    }

	  if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
	    {
	      /* The section at i == 0 is the one that actually contains
		 everything.  */
	      if (i == 0)
		{
		  this_hdr->sh_offset = sec->filepos = off;
		  off += this_hdr->sh_size;
		  p->p_filesz = this_hdr->sh_size;
		  p->p_memsz = 0;
		  p->p_align = 1;
		}
	      else
		{
		  /* The rest are fake sections that shouldn't be written.  */
		  sec->filepos = 0;
		  sec->size = 0;
		  sec->flags = 0;
		  continue;
		}
	    }
	  else
	    {
	      if (p->p_type == PT_LOAD)
		{
		  this_hdr->sh_offset = sec->filepos = off;
		  if (this_hdr->sh_type != SHT_NOBITS)
		    off += this_hdr->sh_size;
		}
	      else if (this_hdr->sh_type == SHT_NOBITS
		       && (this_hdr->sh_flags & SHF_TLS) != 0
		       && this_hdr->sh_offset == 0)
		{
		  /* This is a .tbss section that didn't get a PT_LOAD.
		     (See _bfd_elf_map_sections_to_segments "Create a
		     final PT_LOAD".)  Set sh_offset to the value it
		     would have if we had created a zero p_filesz and
		     p_memsz PT_LOAD header for the section.  This
		     also makes the PT_TLS header have the same
		     p_offset value.  */
		  bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr,
							  off, align);
		  this_hdr->sh_offset = sec->filepos = off + adjust;
		}

	      if (this_hdr->sh_type != SHT_NOBITS)
		{
		  p->p_filesz += this_hdr->sh_size;
		  /* A load section without SHF_ALLOC is something like
		     a note section in a PT_NOTE segment.  These take
		     file space but are not loaded into memory.  */
		  if ((this_hdr->sh_flags & SHF_ALLOC) != 0)
		    p->p_memsz += this_hdr->sh_size;
		}
	      else if ((this_hdr->sh_flags & SHF_ALLOC) != 0)
		{
		  if (p->p_type == PT_TLS)
		    p->p_memsz += this_hdr->sh_size;

		  /* .tbss is special.  It doesn't contribute to p_memsz of
		     normal segments.  */
		  else if ((this_hdr->sh_flags & SHF_TLS) == 0)
		    p->p_memsz += this_hdr->sh_size;
		}

	      if (align > p->p_align
		  && !m->p_align_valid
		  && (p->p_type != PT_LOAD
		      || (abfd->flags & D_PAGED) == 0))
		p->p_align = align;
	    }

	  if (!m->p_flags_valid)
	    {
	      p->p_flags |= PF_R;
	      if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0)
		p->p_flags |= PF_X;
	      if ((this_hdr->sh_flags & SHF_WRITE) != 0)
		p->p_flags |= PF_W;
	    }
	}

      off -= off_adjust;

      /* PR ld/20815 - Check that the program header segment, if
	 present, will be loaded into memory.  */
      if (p->p_type == PT_PHDR
	  && phdr_load_seg == NULL
	  && !(bed->elf_backend_allow_non_load_phdr != NULL
	       && bed->elf_backend_allow_non_load_phdr (abfd, phdrs, alloc)))
	{
	  /* The fix for this error is usually to edit the linker script being
	     used and set up the program headers manually.  Either that or
	     leave room for the headers at the start of the SECTIONS.  */
	  _bfd_error_handler (_("%pB: error: PHDR segment not covered"
				" by LOAD segment"),
			      abfd);
	  if (link_info == NULL)
	    return false;
	  /* Arrange for the linker to exit with an error, deleting
	     the output file unless --noinhibit-exec is given.  */
	  link_info->callbacks->info ("%X");
	}

      /* Check that all sections are in a PT_LOAD segment.
	 Don't check funky gdb generated core files.  */
      if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core)
	{
	  bool check_vma = true;

	  for (i = 1; i < m->count; i++)
	    if (m->sections[i]->vma == m->sections[i - 1]->vma
		&& ELF_SECTION_SIZE (&(elf_section_data (m->sections[i])
				       ->this_hdr), p) != 0
		&& ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1])
				       ->this_hdr), p) != 0)
	      {
		/* Looks like we have overlays packed into the segment.  */
		check_vma = false;
		break;
	      }

	  for (i = 0; i < m->count; i++)
	    {
	      Elf_Internal_Shdr *this_hdr;
	      asection *sec;

	      sec = m->sections[i];
	      this_hdr = &(elf_section_data(sec)->this_hdr);
	      if (!ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma, 0)
		  && !ELF_TBSS_SPECIAL (this_hdr, p))
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB: section `%pA' can't be allocated in segment %d"),
		     abfd, sec, j);
		  print_segment_map (m);
		}
	    }

	  if (p_align_p)
	    p->p_align = p_align;
	}
    }

  elf_next_file_pos (abfd) = off;

  if (link_info != NULL
      && phdr_load_seg != NULL
      && phdr_load_seg->includes_filehdr)
    {
      /* There is a segment that contains both the file headers and the
	 program headers, so provide a symbol __ehdr_start pointing there.
	 A program can use this to examine itself robustly.  */

      struct elf_link_hash_entry *hash
	= elf_link_hash_lookup (elf_hash_table (link_info), "__ehdr_start",
				false, false, true);
      /* If the symbol was referenced and not defined, define it.  */
      if (hash != NULL
	  && (hash->root.type == bfd_link_hash_new
	      || hash->root.type == bfd_link_hash_undefined
	      || hash->root.type == bfd_link_hash_undefweak
	      || hash->root.type == bfd_link_hash_common))
	{
	  asection *s = NULL;
	  bfd_vma filehdr_vaddr = phdrs[phdr_load_seg->idx].p_vaddr / opb;

	  if (phdr_load_seg->count != 0)
	    /* The segment contains sections, so use the first one.  */
	    s = phdr_load_seg->sections[0];
	  else
	    /* Use the first (i.e. lowest-addressed) section in any segment.  */
	    for (m = elf_seg_map (abfd); m != NULL; m = m->next)
	      if (m->p_type == PT_LOAD && m->count != 0)
		{
		  s = m->sections[0];
		  break;
		}

	  if (s != NULL)
	    {
	      hash->root.u.def.value = filehdr_vaddr - s->vma;
	      hash->root.u.def.section = s;
	    }
	  else
	    {
	      hash->root.u.def.value = filehdr_vaddr;
	      hash->root.u.def.section = bfd_abs_section_ptr;
	    }

	  hash->root.type = bfd_link_hash_defined;
	  hash->def_regular = 1;
	  hash->non_elf = 0;
	}
    }

  return true;
}

/* Determine if a bfd is a debuginfo file.  Unfortunately there
   is no defined method for detecting such files, so we have to
   use heuristics instead.  */

bool
is_debuginfo_file (bfd *abfd)
{
  if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_elf_flavour)
    return false;

  Elf_Internal_Shdr **start_headers = elf_elfsections (abfd);
  Elf_Internal_Shdr **end_headers = start_headers + elf_numsections (abfd);
  Elf_Internal_Shdr **headerp;

  for (headerp = start_headers; headerp < end_headers; headerp ++)
    {
      Elf_Internal_Shdr *header = * headerp;

      /* Debuginfo files do not have any allocated SHT_PROGBITS sections.
	 The only allocated sections are SHT_NOBITS or SHT_NOTES.  */
      if ((header->sh_flags & SHF_ALLOC) == SHF_ALLOC
	  && header->sh_type != SHT_NOBITS
	  && header->sh_type != SHT_NOTE)
	return false;
    }

  return true;
}

/* Assign file positions for other sections, except for compressed debug
   and sections assigned in _bfd_elf_assign_file_positions_for_non_load.  */

static bool
assign_file_positions_for_non_load_sections (bfd *abfd,
					     struct bfd_link_info *link_info)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  Elf_Internal_Shdr **i_shdrpp;
  Elf_Internal_Shdr **hdrpp, **end_hdrpp;
  Elf_Internal_Phdr *phdrs;
  Elf_Internal_Phdr *p;
  struct elf_segment_map *m;
  file_ptr off;
  unsigned int opb = bfd_octets_per_byte (abfd, NULL);
  bfd_vma maxpagesize;

  if (link_info != NULL)
    maxpagesize = link_info->maxpagesize;
  else
    maxpagesize = bed->maxpagesize;
  i_shdrpp = elf_elfsections (abfd);
  end_hdrpp = i_shdrpp + elf_numsections (abfd);
  off = elf_next_file_pos (abfd);
  for (hdrpp = i_shdrpp + 1; hdrpp < end_hdrpp; hdrpp++)
    {
      Elf_Internal_Shdr *hdr;
      bfd_vma align;

      hdr = *hdrpp;
      if (hdr->bfd_section != NULL
	  && (hdr->bfd_section->filepos != 0
	      || (hdr->sh_type == SHT_NOBITS
		  && hdr->contents == NULL)))
	BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos);
      else if ((hdr->sh_flags & SHF_ALLOC) != 0)
	{
	  if (hdr->sh_size != 0
	      /* PR 24717 - debuginfo files are known to be not strictly
		 compliant with the ELF standard.  In particular they often
		 have .note.gnu.property sections that are outside of any
		 loadable segment.  This is not a problem for such files,
		 so do not warn about them.  */
	      && ! is_debuginfo_file (abfd))
	    _bfd_error_handler
	      /* xgettext:c-format */
	      (_("%pB: warning: allocated section `%s' not in segment"),
	       abfd,
	       (hdr->bfd_section == NULL
		? "*unknown*"
		: hdr->bfd_section->name));
	  /* We don't need to page align empty sections.  */
	  if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0)
	    align = maxpagesize;
	  else
	    align = hdr->sh_addralign & -hdr->sh_addralign;
	  off += vma_page_aligned_bias (hdr->sh_addr, off, align);
	  off = _bfd_elf_assign_file_position_for_section (hdr, off,
							   false);
	}
      else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
		&& hdr->bfd_section == NULL)
	       /* We don't know the offset of these sections yet:
		  their size has not been decided.  */
	       || (abfd->is_linker_output
		   && hdr->bfd_section != NULL
		   && (hdr->sh_name == -1u
		       || bfd_section_is_ctf (hdr->bfd_section)))
	       || hdr == i_shdrpp[elf_onesymtab (abfd)]
	       || (elf_symtab_shndx_list (abfd) != NULL
		   && hdr == i_shdrpp[elf_symtab_shndx_list (abfd)->ndx])
	       || hdr == i_shdrpp[elf_strtab_sec (abfd)]
	       || hdr == i_shdrpp[elf_shstrtab_sec (abfd)])
	hdr->sh_offset = -1;
      else
	off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
    }
  elf_next_file_pos (abfd) = off;

  /* Now that we have set the section file positions, we can set up
     the file positions for the non PT_LOAD segments.  */
  phdrs = elf_tdata (abfd)->phdr;
  for (m = elf_seg_map (abfd), p = phdrs; m != NULL; m = m->next, p++)
    {
      if (p->p_type == PT_GNU_RELRO)
	{
	  bfd_vma start, end;  /* Bytes.  */
	  bool ok;

	  if (link_info != NULL)
	    {
	      /* During linking the range of the RELRO segment is passed
		 in link_info.  Note that there may be padding between
		 relro_start and the first RELRO section.  */
	      start = link_info->relro_start;
	      end = link_info->relro_end;
	    }
	  else if (m->count != 0)
	    {
	      if (!m->p_size_valid)
		abort ();
	      start = m->sections[0]->vma;
	      end = start + m->p_size / opb;
	    }
	  else
	    {
	      start = 0;
	      end = 0;
	    }

	  ok = false;
	  if (start < end)
	    {
	      struct elf_segment_map *lm;
	      const Elf_Internal_Phdr *lp;
	      unsigned int i;

	      /* Find a LOAD segment containing a section in the RELRO
		 segment.  */
	      for (lm = elf_seg_map (abfd), lp = phdrs;
		   lm != NULL;
		   lm = lm->next, lp++)
		{
		  if (lp->p_type == PT_LOAD
		      && lm->count != 0
		      && (lm->sections[lm->count - 1]->vma
			  + (!IS_TBSS (lm->sections[lm->count - 1])
			     ? lm->sections[lm->count - 1]->size / opb
			     : 0)) > start
		      && lm->sections[0]->vma < end)
		    break;
		}

	      if (lm != NULL)
		{
		  /* Find the section starting the RELRO segment.  */
		  for (i = 0; i < lm->count; i++)
		    {
		      asection *s = lm->sections[i];
		      if (s->vma >= start
			  && s->vma < end
			  && s->size != 0)
			break;
		    }

		  if (i < lm->count)
		    {
		      p->p_vaddr = lm->sections[i]->vma * opb;
		      p->p_paddr = lm->sections[i]->lma * opb;
		      p->p_offset = lm->sections[i]->filepos;
		      p->p_memsz = end * opb - p->p_vaddr;
		      p->p_filesz = p->p_memsz;

		      /* The RELRO segment typically ends a few bytes
			 into .got.plt but other layouts are possible.
			 In cases where the end does not match any
			 loaded section (for instance is in file
			 padding), trim p_filesz back to correspond to
			 the end of loaded section contents.  */
		      if (p->p_filesz > lp->p_vaddr + lp->p_filesz - p->p_vaddr)
			p->p_filesz = lp->p_vaddr + lp->p_filesz - p->p_vaddr;

		      /* Preserve the alignment and flags if they are
			 valid.  The gold linker generates RW/4 for
			 the PT_GNU_RELRO section.  It is better for
			 objcopy/strip to honor these attributes
			 otherwise gdb will choke when using separate
			 debug files.  */
		      if (!m->p_align_valid)
			p->p_align = 1;
		      if (!m->p_flags_valid)
			p->p_flags = PF_R;
		      ok = true;
		    }
		}
	    }

	  if (!ok)
	    {
	      if (link_info != NULL)
		_bfd_error_handler
		  (_("%pB: warning: unable to allocate any sections"
		     " to PT_GNU_RELRO segment"),
		   abfd);
	      memset (p, 0, sizeof *p);
	    }
	}
      else if (p->p_type == PT_GNU_STACK)
	{
	  if (m->p_size_valid)
	    p->p_memsz = m->p_size;
	}
      else if (m->count != 0)
	{
	  unsigned int i;

	  if (p->p_type != PT_LOAD
	      && (p->p_type != PT_NOTE
		  || bfd_get_format (abfd) != bfd_core))
	    {
	      /* A user specified segment layout may include a PHDR
		 segment that overlaps with a LOAD segment...  */
	      if (p->p_type == PT_PHDR)
		{
		  m->count = 0;
		  continue;
		}

	      if (m->includes_filehdr || m->includes_phdrs)
		{
		  /* PR 17512: file: 2195325e.  */
		  _bfd_error_handler
		    (_("%pB: error: non-load segment %d includes file header "
		       "and/or program header"),
		     abfd, (int) (p - phdrs));
		  return false;
		}

	      p->p_filesz = 0;
	      p->p_offset = m->sections[0]->filepos;
	      for (i = m->count; i-- != 0;)
		{
		  asection *sect = m->sections[i];
		  Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr;
		  if (hdr->sh_type != SHT_NOBITS)
		    {
		      p->p_filesz = sect->filepos - p->p_offset + hdr->sh_size;
		      /* NB: p_memsz of the loadable PT_NOTE segment
			 should be the same as p_filesz.  */
		      if (p->p_type == PT_NOTE
			  && (hdr->sh_flags & SHF_ALLOC) != 0)
			p->p_memsz = p->p_filesz;
		      break;
		    }
		}
	    }
	}
    }

  return true;
}

static elf_section_list *
find_section_in_list (unsigned int i, elf_section_list * list)
{
  for (;list != NULL; list = list->next)
    if (list->ndx == i)
      break;
  return list;
}

/* Work out the file positions of all the sections.  This is called by
   _bfd_elf_compute_section_file_positions.  All the section sizes and
   VMAs must be known before this is called.

   Reloc sections come in two flavours: Those processed specially as
   "side-channel" data attached to a section to which they apply, and
   those that bfd doesn't process as relocations.  The latter sort are
   stored in a normal bfd section by bfd_section_from_shdr.  We don't
   consider the former sort here, unless they form part of the loadable
   image.  Reloc sections not assigned here (and compressed debugging
   sections and CTF sections which nothing else in the file can rely
   upon) will be handled later by assign_file_positions_for_relocs.

   We also don't set the positions of the .symtab and .strtab here.  */

static bool
assign_file_positions_except_relocs (bfd *abfd,
				     struct bfd_link_info *link_info)
{
  struct elf_obj_tdata *tdata = elf_tdata (abfd);
  Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  unsigned int alloc;

  if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
      && bfd_get_format (abfd) != bfd_core)
    {
      Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
      unsigned int num_sec = elf_numsections (abfd);
      Elf_Internal_Shdr **hdrpp;
      unsigned int i;
      file_ptr off;

      /* Start after the ELF header.  */
      off = i_ehdrp->e_ehsize;

      /* We are not creating an executable, which means that we are
	 not creating a program header, and that the actual order of
	 the sections in the file is unimportant.  */
      for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
	{
	  Elf_Internal_Shdr *hdr;

	  hdr = *hdrpp;
	  if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
	       && hdr->bfd_section == NULL)
	      /* Do not assign offsets for these sections yet: we don't know
		 their sizes.  */
	      || (abfd->is_linker_output
		  && hdr->bfd_section != NULL
		  && (hdr->sh_name == -1u
		      || bfd_section_is_ctf (hdr->bfd_section)))
	      || i == elf_onesymtab (abfd)
	      || (elf_symtab_shndx_list (abfd) != NULL
		  && hdr == i_shdrpp[elf_symtab_shndx_list (abfd)->ndx])
	      || i == elf_strtab_sec (abfd)
	      || i == elf_shstrtab_sec (abfd))
	    {
	      hdr->sh_offset = -1;
	    }
	  else
	    off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
	}

      elf_next_file_pos (abfd) = off;
      elf_program_header_size (abfd) = 0;
    }
  else
    {
      /* Assign file positions for the loaded sections based on the
	 assignment of sections to segments.  */
      if (!assign_file_positions_for_load_sections (abfd, link_info))
	return false;

      /* And for non-load sections.  */
      if (!assign_file_positions_for_non_load_sections (abfd, link_info))
	return false;
    }

  if (!(*bed->elf_backend_modify_headers) (abfd, link_info))
    return false;

  /* Write out the program headers.  */
  alloc = i_ehdrp->e_phnum;
  if (alloc != 0)
    {
      if (link_info != NULL && ! link_info->no_warn_rwx_segments)
	{
	  /* Memory resident segments with non-zero size and RWX
	     permissions are a security risk, so we generate a warning
	     here if we are creating any.  */
	  unsigned int i;

	  for (i = 0; i < alloc; i++)
	    {
	      const Elf_Internal_Phdr * phdr = tdata->phdr + i;

	      if (phdr->p_memsz == 0)
		continue;

	      if (phdr->p_type == PT_TLS && (phdr->p_flags & PF_X))
		_bfd_error_handler (_("warning: %pB has a TLS segment"
				      " with execute permission"),
				    abfd);
	      else if (phdr->p_type == PT_LOAD
		       && ((phdr->p_flags & (PF_R | PF_W | PF_X))
			   == (PF_R | PF_W | PF_X)))
		_bfd_error_handler (_("warning: %pB has a LOAD segment"
				      " with RWX permissions"),
				    abfd);
	    }
	}

      if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) != 0
	  || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0)
	return false;
    }

  return true;
}

bool
_bfd_elf_init_file_header (bfd *abfd,
			   struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
  Elf_Internal_Ehdr *i_ehdrp;	/* Elf file header, internal form.  */
  struct elf_strtab_hash *shstrtab;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  i_ehdrp = elf_elfheader (abfd);

  shstrtab = _bfd_elf_strtab_init ();
  if (shstrtab == NULL)
    return false;

  elf_shstrtab (abfd) = shstrtab;

  i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
  i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
  i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
  i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;

  i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
  i_ehdrp->e_ident[EI_DATA] =
    bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
  i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;

  if ((abfd->flags & DYNAMIC) != 0)
    i_ehdrp->e_type = ET_DYN;
  else if ((abfd->flags & EXEC_P) != 0)
    i_ehdrp->e_type = ET_EXEC;
  else if (bfd_get_format (abfd) == bfd_core)
    i_ehdrp->e_type = ET_CORE;
  else
    i_ehdrp->e_type = ET_REL;

  switch (bfd_get_arch (abfd))
    {
    case bfd_arch_unknown:
      i_ehdrp->e_machine = EM_NONE;
      break;

      /* There used to be a long list of cases here, each one setting
	 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
	 in the corresponding bfd definition.  To avoid duplication,
	 the switch was removed.  Machines that need special handling
	 can generally do it in elf_backend_final_write_processing(),
	 unless they need the information earlier than the final write.
	 Such need can generally be supplied by replacing the tests for
	 e_machine with the conditions used to determine it.  */
    default:
      i_ehdrp->e_machine = bed->elf_machine_code;
    }

  i_ehdrp->e_version = bed->s->ev_current;
  i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;

  /* No program header, for now.  */
  i_ehdrp->e_phoff = 0;
  i_ehdrp->e_phentsize = 0;
  i_ehdrp->e_phnum = 0;

  /* Each bfd section is section header entry.  */
  i_ehdrp->e_entry = bfd_get_start_address (abfd);
  i_ehdrp->e_shentsize = bed->s->sizeof_shdr;

  elf_tdata (abfd)->symtab_hdr.sh_name =
    (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", false);
  elf_tdata (abfd)->strtab_hdr.sh_name =
    (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", false);
  elf_tdata (abfd)->shstrtab_hdr.sh_name =
    (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", false);
  if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
      || elf_tdata (abfd)->strtab_hdr.sh_name == (unsigned int) -1
      || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
    return false;

  return true;
}

/* Set e_type in ELF header to ET_EXEC for -pie -Ttext-segment=.

   FIXME: We used to have code here to sort the PT_LOAD segments into
   ascending order, as per the ELF spec.  But this breaks some programs,
   including the Linux kernel.  But really either the spec should be
   changed or the programs updated.  */

bool
_bfd_elf_modify_headers (bfd *obfd, struct bfd_link_info *link_info)
{
  if (link_info != NULL && bfd_link_pie (link_info))
    {
      Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (obfd);
      unsigned int num_segments = i_ehdrp->e_phnum;
      struct elf_obj_tdata *tdata = elf_tdata (obfd);
      Elf_Internal_Phdr *segment = tdata->phdr;
      Elf_Internal_Phdr *end_segment = &segment[num_segments];

      /* Find the lowest p_vaddr in PT_LOAD segments.  */
      bfd_vma p_vaddr = (bfd_vma) -1;
      for (; segment < end_segment; segment++)
	if (segment->p_type == PT_LOAD && p_vaddr > segment->p_vaddr)
	  p_vaddr = segment->p_vaddr;

      /* Set e_type to ET_EXEC if the lowest p_vaddr in PT_LOAD
	 segments is non-zero.  */
      if (p_vaddr)
	i_ehdrp->e_type = ET_EXEC;
    }
  return true;
}

/* Assign file positions for all the reloc sections which are not part
   of the loadable file image, and the file position of section headers.  */

static bool
_bfd_elf_assign_file_positions_for_non_load (bfd *abfd)
{
  file_ptr off;
  Elf_Internal_Shdr **shdrpp, **end_shdrpp;
  Elf_Internal_Shdr *shdrp;
  Elf_Internal_Ehdr *i_ehdrp;
  const struct elf_backend_data *bed;

  off = elf_next_file_pos (abfd);

  shdrpp = elf_elfsections (abfd);
  end_shdrpp = shdrpp + elf_numsections (abfd);
  for (shdrpp++; shdrpp < end_shdrpp; shdrpp++)
    {
      shdrp = *shdrpp;
      if (shdrp->sh_offset == -1)
	{
	  asection *sec = shdrp->bfd_section;
	  if (sec == NULL
	      || shdrp->sh_type == SHT_REL
	      || shdrp->sh_type == SHT_RELA)
	    ;
	  else if (bfd_section_is_ctf (sec))
	    {
	      /* Update section size and contents.	*/
	      shdrp->sh_size = sec->size;
	      shdrp->contents = sec->contents;
	    }
	  else if (shdrp->sh_name == -1u)
	    {
	      const char *name = sec->name;
	      struct bfd_elf_section_data *d;

	      /* Compress DWARF debug sections.  */
	      if (!bfd_compress_section (abfd, sec, shdrp->contents))
		return false;

	      if (sec->compress_status == COMPRESS_SECTION_DONE
		  && (abfd->flags & BFD_COMPRESS_GABI) == 0
		  && name[1] == 'd')
		{
		  /* If section is compressed with zlib-gnu, convert
		     section name from .debug_* to .zdebug_*.  */
		  char *new_name = bfd_debug_name_to_zdebug (abfd, name);
		  if (new_name == NULL)
		    return false;
		  name = new_name;
		}
	      /* Add section name to section name section.  */
	      shdrp->sh_name
		= (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
						      name, false);
	      d = elf_section_data (sec);

	      /* Add reloc section name to section name section.  */
	      if (d->rel.hdr
		  && !_bfd_elf_set_reloc_sh_name (abfd, d->rel.hdr,
						  name, false))
		return false;
	      if (d->rela.hdr
		  && !_bfd_elf_set_reloc_sh_name (abfd, d->rela.hdr,
						  name, true))
		return false;

	      /* Update section size and contents.  */
	      shdrp->sh_size = sec->size;
	      shdrp->contents = sec->contents;
	      sec->contents = NULL;
	    }

	  off = _bfd_elf_assign_file_position_for_section (shdrp, off, true);
	}
    }

  /* Place section name section after DWARF debug sections have been
     compressed.  */
  _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
  shdrp = &elf_tdata (abfd)->shstrtab_hdr;
  shdrp->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
  off = _bfd_elf_assign_file_position_for_section (shdrp, off, true);

  /* Place the section headers.  */
  i_ehdrp = elf_elfheader (abfd);
  bed = get_elf_backend_data (abfd);
  off = align_file_position (off, 1 << bed->s->log_file_align);
  i_ehdrp->e_shoff = off;
  off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
  elf_next_file_pos (abfd) = off;

  return true;
}

bool
_bfd_elf_write_object_contents (bfd *abfd)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  Elf_Internal_Shdr **i_shdrp;
  bool failed;
  unsigned int count, num_sec;
  struct elf_obj_tdata *t;

  if (! abfd->output_has_begun
      && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
    return false;
  /* Do not rewrite ELF data when the BFD has been opened for update.
     abfd->output_has_begun was set to TRUE on opening, so creation of
     new sections, and modification of existing section sizes was
     restricted.  This means the ELF header, program headers and
     section headers can't have changed.  If the contents of any
     sections has been modified, then those changes have already been
     written to the BFD.  */
  else if (abfd->direction == both_direction)
    {
      BFD_ASSERT (abfd->output_has_begun);
      return true;
    }

  i_shdrp = elf_elfsections (abfd);

  failed = false;
  bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
  if (failed)
    return false;

  if (!_bfd_elf_assign_file_positions_for_non_load (abfd))
    return false;

  /* After writing the headers, we need to write the sections too...  */
  num_sec = elf_numsections (abfd);
  for (count = 1; count < num_sec; count++)
    {
      i_shdrp[count]->sh_name
	= _bfd_elf_strtab_offset (elf_shstrtab (abfd),
				  i_shdrp[count]->sh_name);
      if (bed->elf_backend_section_processing)
	if (!(*bed->elf_backend_section_processing) (abfd, i_shdrp[count]))
	  return false;
      if (i_shdrp[count]->contents)
	{
	  bfd_size_type amt = i_shdrp[count]->sh_size;

	  if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
	      || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
	    return false;
	}
    }

  /* Write out the section header names.  */
  t = elf_tdata (abfd);
  if (elf_shstrtab (abfd) != NULL
      && (bfd_seek (abfd, t->shstrtab_hdr.sh_offset, SEEK_SET) != 0
	  || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))))
    return false;

  if (!(*bed->elf_backend_final_write_processing) (abfd))
    return false;

  if (!bed->s->write_shdrs_and_ehdr (abfd))
    return false;

  /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0].  */
  if (t->o->build_id.after_write_object_contents != NULL
      && !(*t->o->build_id.after_write_object_contents) (abfd))
    return false;
  if (t->o->package_metadata.after_write_object_contents != NULL
      && !(*t->o->package_metadata.after_write_object_contents) (abfd))
    return false;

  return true;
}

bool
_bfd_elf_write_corefile_contents (bfd *abfd)
{
  /* Hopefully this can be done just like an object file.  */
  return _bfd_elf_write_object_contents (abfd);
}

/* Given a section, search the header to find them.  */

unsigned int
_bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
{
  const struct elf_backend_data *bed;
  unsigned int sec_index;

  if (elf_section_data (asect) != NULL
      && elf_section_data (asect)->this_idx != 0)
    return elf_section_data (asect)->this_idx;

  if (bfd_is_abs_section (asect))
    sec_index = SHN_ABS;
  else if (bfd_is_com_section (asect))
    sec_index = SHN_COMMON;
  else if (bfd_is_und_section (asect))
    sec_index = SHN_UNDEF;
  else
    sec_index = SHN_BAD;

  bed = get_elf_backend_data (abfd);
  if (bed->elf_backend_section_from_bfd_section)
    {
      int retval = sec_index;

      if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
	return retval;
    }

  if (sec_index == SHN_BAD)
    bfd_set_error (bfd_error_nonrepresentable_section);

  return sec_index;
}

/* Given a BFD symbol, return the index in the ELF symbol table, or -1
   on error.  */

int
_bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr)
{
  asymbol *asym_ptr = *asym_ptr_ptr;
  int idx;
  flagword flags = asym_ptr->flags;

  /* When gas creates relocations against local labels, it creates its
     own symbol for the section, but does put the symbol into the
     symbol chain, so udata is 0.  When the linker is generating
     relocatable output, this section symbol may be for one of the
     input sections rather than the output section.  */
  if (asym_ptr->udata.i == 0
      && (flags & BSF_SECTION_SYM)
      && asym_ptr->section)
    {
      asection *sec;

      sec = asym_ptr->section;
      if (sec->owner != abfd && sec->output_section != NULL)
	sec = sec->output_section;
      if (sec->owner == abfd
	  && sec->index < elf_num_section_syms (abfd)
	  && elf_section_syms (abfd)[sec->index] != NULL)
	asym_ptr->udata.i = elf_section_syms (abfd)[sec->index]->udata.i;
    }

  idx = asym_ptr->udata.i;

  if (idx == 0)
    {
      /* This case can occur when using --strip-symbol on a symbol
	 which is used in a relocation entry.  */
      _bfd_error_handler
	/* xgettext:c-format */
	(_("%pB: symbol `%s' required but not present"),
	 abfd, bfd_asymbol_name (asym_ptr));
      bfd_set_error (bfd_error_no_symbols);
      return -1;
    }

#if DEBUG & 4
  {
    fprintf (stderr,
	     "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d,"
	     " flags = 0x%.8x\n",
	     (long) asym_ptr, asym_ptr->name, idx, flags);
    fflush (stderr);
  }
#endif

  return idx;
}

static inline bfd_vma
segment_size (Elf_Internal_Phdr *segment)
{
  return (segment->p_memsz > segment->p_filesz
	  ? segment->p_memsz : segment->p_filesz);
}


/* Returns the end address of the segment + 1.  */
static inline bfd_vma
segment_end (Elf_Internal_Phdr *segment, bfd_vma start)
{
  return start + segment_size (segment);
}

static inline bfd_size_type
section_size (asection *section, Elf_Internal_Phdr *segment)
{
  if ((section->flags & SEC_HAS_CONTENTS) != 0
      || (section->flags & SEC_THREAD_LOCAL) == 0
      || segment->p_type == PT_TLS)
    return section->size;
  return 0;
}

/* Returns TRUE if the given section is contained within the given
   segment.  LMA addresses are compared against PADDR when
   USE_VADDR is false, VMA against VADDR when true.  */
static bool
is_contained_by (asection *section, Elf_Internal_Phdr *segment,
		 bfd_vma paddr, bfd_vma vaddr, unsigned int opb,
		 bool use_vaddr)
{
  bfd_vma seg_addr = !use_vaddr ? paddr : vaddr;
  bfd_vma addr = !use_vaddr ? section->lma : section->vma;
  bfd_vma octet;
  if (_bfd_mul_overflow (addr, opb, &octet))
    return false;
  /* The third and fourth lines below are testing that the section end
     address is within the segment.  It's written this way to avoid
     overflow.  Add seg_addr + section_size to both sides of the
     inequality to make it obvious.  */
  return (octet >= seg_addr
	  && segment_size (segment) >= section_size (section, segment)
	  && (octet - seg_addr
	      <= segment_size (segment) - section_size (section, segment)));
}

/* Handle PT_NOTE segment.  */
static bool
is_note (asection *s, Elf_Internal_Phdr *p)
{
  return (p->p_type == PT_NOTE
	  && elf_section_type (s) == SHT_NOTE
	  && (ufile_ptr) s->filepos >= p->p_offset
	  && p->p_filesz >= s->size
	  && (ufile_ptr) s->filepos - p->p_offset <= p->p_filesz - s->size);
}

/* Rewrite program header information.  */

static bool
rewrite_elf_program_header (bfd *ibfd, bfd *obfd, bfd_vma maxpagesize)
{
  Elf_Internal_Ehdr *iehdr;
  struct elf_segment_map *map;
  struct elf_segment_map *map_first;
  struct elf_segment_map **pointer_to_map;
  Elf_Internal_Phdr *segment;
  asection *section;
  unsigned int i;
  unsigned int num_segments;
  bool phdr_included = false;
  bool p_paddr_valid;
  struct elf_segment_map *phdr_adjust_seg = NULL;
  unsigned int phdr_adjust_num = 0;
  const struct elf_backend_data *bed;
  unsigned int opb = bfd_octets_per_byte (ibfd, NULL);

  bed = get_elf_backend_data (ibfd);
  iehdr = elf_elfheader (ibfd);

  map_first = NULL;
  pointer_to_map = &map_first;

  num_segments = elf_elfheader (ibfd)->e_phnum;

  /* The complicated case when p_vaddr is 0 is to handle the Solaris
     linker, which generates a PT_INTERP section with p_vaddr and
     p_memsz set to 0.  */
#define IS_SOLARIS_PT_INTERP(p, s)					\
  (p->p_vaddr == 0							\
   && p->p_paddr == 0							\
   && p->p_memsz == 0							\
   && p->p_filesz > 0							\
   && (s->flags & SEC_HAS_CONTENTS) != 0				\
   && s->size > 0							\
   && (bfd_vma) s->filepos >= p->p_offset				\
   && ((bfd_vma) s->filepos + s->size					\
       <= p->p_offset + p->p_filesz))

  /* Decide if the given section should be included in the given segment.
     A section will be included if:
       1. It is within the address space of the segment -- we use the LMA
	  if that is set for the segment and the VMA otherwise,
       2. It is an allocated section or a NOTE section in a PT_NOTE
	  segment.
       3. There is an output section associated with it,
       4. The section has not already been allocated to a previous segment.
       5. PT_GNU_STACK segments do not include any sections.
       6. PT_TLS segment includes only SHF_TLS sections.
       7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments.
       8. PT_DYNAMIC should not contain empty sections at the beginning
	  (with the possible exception of .dynamic).  */
#define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed, opb)		\
  (((is_contained_by (section, segment, segment->p_paddr,		\
		      segment->p_vaddr, opb,				\
		      bed->want_p_paddr_set_to_zero)			\
     && (section->flags & SEC_ALLOC) != 0)				\
    || is_note (section, segment))					\
   && segment->p_type != PT_GNU_STACK					\
   && (segment->p_type != PT_TLS					\
       || (section->flags & SEC_THREAD_LOCAL))				\
   && (segment->p_type == PT_LOAD					\
       || segment->p_type == PT_TLS					\
       || (section->flags & SEC_THREAD_LOCAL) == 0)			\
   && (segment->p_type != PT_DYNAMIC					\
       || section_size (section, segment) > 0				\
       || (segment->p_paddr						\
	   ? segment->p_paddr != section->lma * (opb)			\
	   : segment->p_vaddr != section->vma * (opb))			\
       || (strcmp (bfd_section_name (section), ".dynamic") == 0))	\
   && (segment->p_type != PT_LOAD || !section->segment_mark))

/* If the output section of a section in the input segment is NULL,
   it is removed from the corresponding output segment.   */
#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed, opb)		\
  (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed, opb)		\
   && section->output_section != NULL)

  /* Returns TRUE iff seg1 starts after the end of seg2.  */
#define SEGMENT_AFTER_SEGMENT(seg1, seg2, field)			\
  (seg1->field >= segment_end (seg2, seg2->field))

  /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
     their VMA address ranges and their LMA address ranges overlap.
     It is possible to have overlapping VMA ranges without overlapping LMA
     ranges.  RedBoot images for example can have both .data and .bss mapped
     to the same VMA range, but with the .data section mapped to a different
     LMA.  */
#define SEGMENT_OVERLAPS(seg1, seg2)					\
  (   !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr)			\
	|| SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr))			\
   && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr)			\
	|| SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))

  /* Initialise the segment mark field, and discard stupid alignment.  */
  for (section = ibfd->sections; section != NULL; section = section->next)
    {
      asection *o = section->output_section;
      if (o != NULL && o->alignment_power >= (sizeof (bfd_vma) * 8) - 1)
	o->alignment_power = 0;
      section->segment_mark = false;
    }

  /* The Solaris linker creates program headers in which all the
     p_paddr fields are zero.  When we try to objcopy or strip such a
     file, we get confused.  Check for this case, and if we find it
     don't set the p_paddr_valid fields.  */
  p_paddr_valid = false;
  for (i = 0, segment = elf_tdata (ibfd)->phdr;
       i < num_segments;
       i++, segment++)
    if (segment->p_paddr != 0)
      {
	p_paddr_valid = true;
	break;
      }

  /* Scan through the segments specified in the program header
     of the input BFD.  For this first scan we look for overlaps
     in the loadable segments.  These can be created by weird
     parameters to objcopy.  Also, fix some solaris weirdness.  */
  for (i = 0, segment = elf_tdata (ibfd)->phdr;
       i < num_segments;
       i++, segment++)
    {
      unsigned int j;
      Elf_Internal_Phdr *segment2;

      if (segment->p_type == PT_INTERP)
	for (section = ibfd->sections; section; section = section->next)
	  if (IS_SOLARIS_PT_INTERP (segment, section))
	    {
	      /* Mininal change so that the normal section to segment
		 assignment code will work.  */
	      segment->p_vaddr = section->vma * opb;
	      break;
	    }

      if (segment->p_type != PT_LOAD)
	{
	  /* Remove PT_GNU_RELRO segment.  */
	  if (segment->p_type == PT_GNU_RELRO)
	    segment->p_type = PT_NULL;
	  continue;
	}

      /* Determine if this segment overlaps any previous segments.  */
      for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++)
	{
	  bfd_signed_vma extra_length;

	  if (segment2->p_type != PT_LOAD
	      || !SEGMENT_OVERLAPS (segment, segment2))
	    continue;

	  /* Merge the two segments together.  */
	  if (segment2->p_vaddr < segment->p_vaddr)
	    {
	      /* Extend SEGMENT2 to include SEGMENT and then delete
		 SEGMENT.  */
	      extra_length = (segment_end (segment, segment->p_vaddr)
			      - segment_end (segment2, segment2->p_vaddr));

	      if (extra_length > 0)
		{
		  segment2->p_memsz += extra_length;
		  segment2->p_filesz += extra_length;
		}

	      segment->p_type = PT_NULL;

	      /* Since we have deleted P we must restart the outer loop.  */
	      i = 0;
	      segment = elf_tdata (ibfd)->phdr;
	      break;
	    }
	  else
	    {
	      /* Extend SEGMENT to include SEGMENT2 and then delete
		 SEGMENT2.  */
	      extra_length = (segment_end (segment2, segment2->p_vaddr)
			      - segment_end (segment, segment->p_vaddr));

	      if (extra_length > 0)
		{
		  segment->p_memsz += extra_length;
		  segment->p_filesz += extra_length;
		}

	      segment2->p_type = PT_NULL;
	    }
	}
    }

  /* The second scan attempts to assign sections to segments.  */
  for (i = 0, segment = elf_tdata (ibfd)->phdr;
       i < num_segments;
       i++, segment++)
    {
      unsigned int section_count;
      asection **sections;
      asection *output_section;
      unsigned int isec;
      asection *matching_lma;
      asection *suggested_lma;
      unsigned int j;
      size_t amt;
      asection *first_section;

      if (segment->p_type == PT_NULL)
	continue;

      first_section = NULL;
      /* Compute how many sections might be placed into this segment.  */
      for (section = ibfd->sections, section_count = 0;
	   section != NULL;
	   section = section->next)
	{
	  /* Find the first section in the input segment, which may be
	     removed from the corresponding output segment.   */
	  if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed, opb))
	    {
	      if (first_section == NULL)
		first_section = section;
	      if (section->output_section != NULL)
		++section_count;
	    }
	}

      /* Allocate a segment map big enough to contain
	 all of the sections we have selected.  */
      amt = sizeof (struct elf_segment_map) - sizeof (asection *);
      amt += section_count * sizeof (asection *);
      map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
      if (map == NULL)
	return false;

      /* Initialise the fields of the segment map.  Default to
	 using the physical address of the segment in the input BFD.  */
      map->next = NULL;
      map->p_type = segment->p_type;
      map->p_flags = segment->p_flags;
      map->p_flags_valid = 1;

      if (map->p_type == PT_LOAD
	  && (ibfd->flags & D_PAGED) != 0
	  && maxpagesize > 1
	  && segment->p_align > 1)
	{
	  map->p_align = segment->p_align;
	  if (segment->p_align > maxpagesize)
	    map->p_align = maxpagesize;
	  map->p_align_valid = 1;
	}

      /* If the first section in the input segment is removed, there is
	 no need to preserve segment physical address in the corresponding
	 output segment.  */
      if (!first_section || first_section->output_section != NULL)
	{
	  map->p_paddr = segment->p_paddr;
	  map->p_paddr_valid = p_paddr_valid;
	}

      /* Determine if this segment contains the ELF file header
	 and if it contains the program headers themselves.  */
      map->includes_filehdr = (segment->p_offset == 0
			       && segment->p_filesz >= iehdr->e_ehsize);
      map->includes_phdrs = 0;

      if (!phdr_included || segment->p_type != PT_LOAD)
	{
	  map->includes_phdrs =
	    (segment->p_offset <= (bfd_vma) iehdr->e_phoff
	     && (segment->p_offset + segment->p_filesz
		 >= ((bfd_vma) iehdr->e_phoff
		     + iehdr->e_phnum * iehdr->e_phentsize)));

	  if (segment->p_type == PT_LOAD && map->includes_phdrs)
	    phdr_included = true;
	}

      if (section_count == 0)
	{
	  /* Special segments, such as the PT_PHDR segment, may contain
	     no sections, but ordinary, loadable segments should contain
	     something.  They are allowed by the ELF spec however, so only
	     a warning is produced.
	     There is however the valid use case of embedded systems which
	     have segments with p_filesz of 0 and a p_memsz > 0 to initialize
	     flash memory with zeros.  No warning is shown for that case.  */
	  if (segment->p_type == PT_LOAD
	      && (segment->p_filesz > 0 || segment->p_memsz == 0))
	    /* xgettext:c-format */
	    _bfd_error_handler
	      (_("%pB: warning: empty loadable segment detected"
		 " at vaddr=%#" PRIx64 ", is this intentional?"),
	       ibfd, (uint64_t) segment->p_vaddr);

	  map->p_vaddr_offset = segment->p_vaddr / opb;
	  map->count = 0;
	  *pointer_to_map = map;
	  pointer_to_map = &map->next;

	  continue;
	}

      /* Now scan the sections in the input BFD again and attempt
	 to add their corresponding output sections to the segment map.
	 The problem here is how to handle an output section which has
	 been moved (ie had its LMA changed).  There are four possibilities:

	 1. None of the sections have been moved.
	    In this case we can continue to use the segment LMA from the
	    input BFD.

	 2. All of the sections have been moved by the same amount.
	    In this case we can change the segment's LMA to match the LMA
	    of the first section.

	 3. Some of the sections have been moved, others have not.
	    In this case those sections which have not been moved can be
	    placed in the current segment which will have to have its size,
	    and possibly its LMA changed, and a new segment or segments will
	    have to be created to contain the other sections.

	 4. The sections have been moved, but not by the same amount.
	    In this case we can change the segment's LMA to match the LMA
	    of the first section and we will have to create a new segment
	    or segments to contain the other sections.

	 In order to save time, we allocate an array to hold the section
	 pointers that we are interested in.  As these sections get assigned
	 to a segment, they are removed from this array.  */

      amt = section_count * sizeof (asection *);
      sections = (asection **) bfd_malloc (amt);
      if (sections == NULL)
	return false;

      /* Step One: Scan for segment vs section LMA conflicts.
	 Also add the sections to the section array allocated above.
	 Also add the sections to the current segment.  In the common
	 case, where the sections have not been moved, this means that
	 we have completely filled the segment, and there is nothing
	 more to do.  */
      isec = 0;
      matching_lma = NULL;
      suggested_lma = NULL;

      for (section = first_section, j = 0;
	   section != NULL;
	   section = section->next)
	{
	  if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed, opb))
	    {
	      output_section = section->output_section;

	      sections[j++] = section;

	      /* The Solaris native linker always sets p_paddr to 0.
		 We try to catch that case here, and set it to the
		 correct value.  Note - some backends require that
		 p_paddr be left as zero.  */
	      if (!p_paddr_valid
		  && segment->p_vaddr != 0
		  && !bed->want_p_paddr_set_to_zero
		  && isec == 0
		  && output_section->lma != 0
		  && (align_power (segment->p_vaddr
				   + (map->includes_filehdr
				      ? iehdr->e_ehsize : 0)
				   + (map->includes_phdrs
				      ? iehdr->e_phnum * iehdr->e_phentsize
				      : 0),
				   output_section->alignment_power * opb)
		      == (output_section->vma * opb)))
		map->p_paddr = segment->p_vaddr;

	      /* Match up the physical address of the segment with the
		 LMA address of the output section.  */
	      if (is_contained_by (output_section, segment, map->p_paddr,
				   0, opb, false)
		  || is_note (section, segment))
		{
		  if (matching_lma == NULL
		      || output_section->lma < matching_lma->lma)
		    matching_lma = output_section;

		  /* We assume that if the section fits within the segment
		     then it does not overlap any other section within that
		     segment.  */
		  map->sections[isec++] = output_section;
		}
	      else if (suggested_lma == NULL)
		suggested_lma = output_section;

	      if (j == section_count)
		break;
	    }
	}

      BFD_ASSERT (j == section_count);

      /* Step Two: Adjust the physical address of the current segment,
	 if necessary.  */
      if (isec == section_count)
	{
	  /* All of the sections fitted within the segment as currently
	     specified.  This is the default case.  Add the segment to
	     the list of built segments and carry on to process the next
	     program header in the input BFD.  */
	  map->count = section_count;
	  *pointer_to_map = map;
	  pointer_to_map = &map->next;

	  if (p_paddr_valid
	      && !bed->want_p_paddr_set_to_zero)
	    {
	      bfd_vma hdr_size = 0;
	      if (map->includes_filehdr)
		hdr_size = iehdr->e_ehsize;
	      if (map->includes_phdrs)
		hdr_size += iehdr->e_phnum * iehdr->e_phentsize;

	      /* Account for padding before the first section in the
		 segment.  */
	      map->p_vaddr_offset = ((map->p_paddr + hdr_size) / opb
				     - matching_lma->lma);
	    }

	  free (sections);
	  continue;
	}
      else
	{
	  /* Change the current segment's physical address to match
	     the LMA of the first section that fitted, or if no
	     section fitted, the first section.  */
	  if (matching_lma == NULL)
	    matching_lma = suggested_lma;

	  map->p_paddr = matching_lma->lma * opb;

	  /* Offset the segment physical address from the lma
	     to allow for space taken up by elf headers.  */
	  if (map->includes_phdrs)
	    {
	      map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;

	      /* iehdr->e_phnum is just an estimate of the number
		 of program headers that we will need.  Make a note
		 here of the number we used and the segment we chose
		 to hold these headers, so that we can adjust the
		 offset when we know the correct value.  */
	      phdr_adjust_num = iehdr->e_phnum;
	      phdr_adjust_seg = map;
	    }

	  if (map->includes_filehdr)
	    {
	      bfd_vma align = (bfd_vma) 1 << matching_lma->alignment_power;
	      map->p_paddr -= iehdr->e_ehsize;
	      /* We've subtracted off the size of headers from the
		 first section lma, but there may have been some
		 alignment padding before that section too.  Try to
		 account for that by adjusting the segment lma down to
		 the same alignment.  */
	      if (segment->p_align != 0 && segment->p_align < align)
		align = segment->p_align;
	      map->p_paddr &= -(align * opb);
	    }
	}

      /* Step Three: Loop over the sections again, this time assigning
	 those that fit to the current segment and removing them from the
	 sections array; but making sure not to leave large gaps.  Once all
	 possible sections have been assigned to the current segment it is
	 added to the list of built segments and if sections still remain
	 to be assigned, a new segment is constructed before repeating
	 the loop.  */
      isec = 0;
      do
	{
	  map->count = 0;
	  suggested_lma = NULL;

	  /* Fill the current segment with sections that fit.  */
	  for (j = 0; j < section_count; j++)
	    {
	      section = sections[j];

	      if (section == NULL)
		continue;

	      output_section = section->output_section;

	      BFD_ASSERT (output_section != NULL);

	      if (is_contained_by (output_section, segment, map->p_paddr,
				   0, opb, false)
		  || is_note (section, segment))
		{
		  if (map->count == 0)
		    {
		      /* If the first section in a segment does not start at
			 the beginning of the segment, then something is
			 wrong.  */
		      if (align_power (map->p_paddr
				       + (map->includes_filehdr
					  ? iehdr->e_ehsize : 0)
				       + (map->includes_phdrs
					  ? iehdr->e_phnum * iehdr->e_phentsize
					  : 0),
				       output_section->alignment_power * opb)
			  != output_section->lma * opb)
			goto sorry;
		    }
		  else
		    {
		      asection *prev_sec;

		      prev_sec = map->sections[map->count - 1];

		      /* If the gap between the end of the previous section
			 and the start of this section is more than
			 maxpagesize then we need to start a new segment.  */
		      if ((BFD_ALIGN (prev_sec->lma + prev_sec->size,
				      maxpagesize)
			   < BFD_ALIGN (output_section->lma, maxpagesize))
			  || (prev_sec->lma + prev_sec->size
			      > output_section->lma))
			{
			  if (suggested_lma == NULL)
			    suggested_lma = output_section;

			  continue;
			}
		    }

		  map->sections[map->count++] = output_section;
		  ++isec;
		  sections[j] = NULL;
		  if (segment->p_type == PT_LOAD)
		    section->segment_mark = true;
		}
	      else if (suggested_lma == NULL)
		suggested_lma = output_section;
	    }

	  /* PR 23932.  A corrupt input file may contain sections that cannot
	     be assigned to any segment - because for example they have a
	     negative size - or segments that do not contain any sections.
	     But there are also valid reasons why a segment can be empty.
	     So allow a count of zero.  */

	  /* Add the current segment to the list of built segments.  */
	  *pointer_to_map = map;
	  pointer_to_map = &map->next;

	  if (isec < section_count)
	    {
	      /* We still have not allocated all of the sections to
		 segments.  Create a new segment here, initialise it
		 and carry on looping.  */
	      amt = sizeof (struct elf_segment_map) - sizeof (asection *);
	      amt += section_count * sizeof (asection *);
	      map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
	      if (map == NULL)
		{
		  free (sections);
		  return false;
		}

	      /* Initialise the fields of the segment map.  Set the physical
		 physical address to the LMA of the first section that has
		 not yet been assigned.  */
	      map->next = NULL;
	      map->p_type = segment->p_type;
	      map->p_flags = segment->p_flags;
	      map->p_flags_valid = 1;
	      map->p_paddr = suggested_lma->lma * opb;
	      map->p_paddr_valid = p_paddr_valid;
	      map->includes_filehdr = 0;
	      map->includes_phdrs = 0;
	    }

	  continue;
	sorry:
	  bfd_set_error (bfd_error_sorry);
	  free (sections);
	  return false;
	}
      while (isec < section_count);

      free (sections);
    }

  elf_seg_map (obfd) = map_first;

  /* If we had to estimate the number of program headers that were
     going to be needed, then check our estimate now and adjust
     the offset if necessary.  */
  if (phdr_adjust_seg != NULL)
    {
      unsigned int count;

      for (count = 0, map = map_first; map != NULL; map = map->next)
	count++;

      if (count > phdr_adjust_num)
	phdr_adjust_seg->p_paddr
	  -= (count - phdr_adjust_num) * iehdr->e_phentsize;

      for (map = map_first; map != NULL; map = map->next)
	if (map->p_type == PT_PHDR)
	  {
	    bfd_vma adjust
	      = phdr_adjust_seg->includes_filehdr ? iehdr->e_ehsize : 0;
	    map->p_paddr = phdr_adjust_seg->p_paddr + adjust;
	    break;
	  }
    }

#undef IS_SOLARIS_PT_INTERP
#undef IS_SECTION_IN_INPUT_SEGMENT
#undef INCLUDE_SECTION_IN_SEGMENT
#undef SEGMENT_AFTER_SEGMENT
#undef SEGMENT_OVERLAPS
  return true;
}

/* Return true if p_align in the ELF program header in ABFD is valid.  */

static bool
elf_is_p_align_valid (bfd *abfd)
{
  unsigned int i;
  Elf_Internal_Phdr *segment;
  unsigned int num_segments;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  bfd_size_type maxpagesize = bed->maxpagesize;
  bfd_size_type p_align = bed->p_align;

  /* Return true if the default p_align value isn't set or the maximum
     page size is the same as the minimum page size.  */
  if (p_align == 0 || maxpagesize == bed->minpagesize)
    return true;

  /* When the default p_align value is set, p_align may be set to the
     default p_align value while segments are aligned to the maximum
     page size.  In this case, the input p_align will be ignored and
     the maximum page size will be used to align the output segments.  */
  segment = elf_tdata (abfd)->phdr;
  num_segments = elf_elfheader (abfd)->e_phnum;
  for (i = 0; i < num_segments; i++, segment++)
    if (segment->p_type == PT_LOAD
	&& (segment->p_align != p_align
	    || vma_page_aligned_bias (segment->p_vaddr,
				      segment->p_offset,
				      maxpagesize) != 0))
      return true;

  return false;
}

/* Copy ELF program header information.  */

static bool
copy_elf_program_header (bfd *ibfd, bfd *obfd)
{
  Elf_Internal_Ehdr *iehdr;
  struct elf_segment_map *map;
  struct elf_segment_map *map_first;
  struct elf_segment_map **pointer_to_map;
  Elf_Internal_Phdr *segment;
  unsigned int i;
  unsigned int num_segments;
  bool phdr_included = false;
  bool p_paddr_valid;
  bool p_palign_valid;
  unsigned int opb = bfd_octets_per_byte (ibfd, NULL);

  iehdr = elf_elfheader (ibfd);

  map_first = NULL;
  pointer_to_map = &map_first;

  /* If all the segment p_paddr fields are zero, don't set
     map->p_paddr_valid.  */
  p_paddr_valid = false;
  num_segments = elf_elfheader (ibfd)->e_phnum;
  for (i = 0, segment = elf_tdata (ibfd)->phdr;
       i < num_segments;
       i++, segment++)
    if (segment->p_paddr != 0)
      {
	p_paddr_valid = true;
	break;
      }

  p_palign_valid = elf_is_p_align_valid (ibfd);

  for (i = 0, segment = elf_tdata (ibfd)->phdr;
       i < num_segments;
       i++, segment++)
    {
      asection *section;
      unsigned int section_count;
      size_t amt;
      Elf_Internal_Shdr *this_hdr;
      asection *first_section = NULL;
      asection *lowest_section;

      /* Compute how many sections are in this segment.  */
      for (section = ibfd->sections, section_count = 0;
	   section != NULL;
	   section = section->next)
	{
	  this_hdr = &(elf_section_data(section)->this_hdr);
	  if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
	    {
	      if (first_section == NULL)
		first_section = section;
	      section_count++;
	    }
	}

      /* Allocate a segment map big enough to contain
	 all of the sections we have selected.  */
      amt = sizeof (struct elf_segment_map) - sizeof (asection *);
      amt += section_count * sizeof (asection *);
      map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
      if (map == NULL)
	return false;

      /* Initialize the fields of the output segment map with the
	 input segment.  */
      map->next = NULL;
      map->p_type = segment->p_type;
      map->p_flags = segment->p_flags;
      map->p_flags_valid = 1;
      map->p_paddr = segment->p_paddr;
      map->p_paddr_valid = p_paddr_valid;
      map->p_align = segment->p_align;
      /* Keep p_align of PT_GNU_STACK for stack alignment.  */
      map->p_align_valid = (map->p_type == PT_GNU_STACK
			    || p_palign_valid);
      map->p_vaddr_offset = 0;

      if (map->p_type == PT_GNU_RELRO
	  || map->p_type == PT_GNU_STACK)
	{
	  /* The PT_GNU_RELRO segment may contain the first a few
	     bytes in the .got.plt section even if the whole .got.plt
	     section isn't in the PT_GNU_RELRO segment.  We won't
	     change the size of the PT_GNU_RELRO segment.
	     Similarly, PT_GNU_STACK size is significant on uclinux
	     systems.    */
	  map->p_size = segment->p_memsz;
	  map->p_size_valid = 1;
	}

      /* Determine if this segment contains the ELF file header
	 and if it contains the program headers themselves.  */
      map->includes_filehdr = (segment->p_offset == 0
			       && segment->p_filesz >= iehdr->e_ehsize);

      map->includes_phdrs = 0;
      if (! phdr_included || segment->p_type != PT_LOAD)
	{
	  map->includes_phdrs =
	    (segment->p_offset <= (bfd_vma) iehdr->e_phoff
	     && (segment->p_offset + segment->p_filesz
		 >= ((bfd_vma) iehdr->e_phoff
		     + iehdr->e_phnum * iehdr->e_phentsize)));

	  if (segment->p_type == PT_LOAD && map->includes_phdrs)
	    phdr_included = true;
	}

      lowest_section = NULL;
      if (section_count != 0)
	{
	  unsigned int isec = 0;

	  for (section = first_section;
	       section != NULL;
	       section = section->next)
	    {
	      this_hdr = &(elf_section_data(section)->this_hdr);
	      if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
		{
		  map->sections[isec++] = section->output_section;
		  if ((section->flags & SEC_ALLOC) != 0)
		    {
		      bfd_vma seg_off;

		      if (lowest_section == NULL
			  || section->lma < lowest_section->lma)
			lowest_section = section;

		      /* Section lmas are set up from PT_LOAD header
			 p_paddr in _bfd_elf_make_section_from_shdr.
			 If this header has a p_paddr that disagrees
			 with the section lma, flag the p_paddr as
			 invalid.  */
		      if ((section->flags & SEC_LOAD) != 0)
			seg_off = this_hdr->sh_offset - segment->p_offset;
		      else
			seg_off = this_hdr->sh_addr - segment->p_vaddr;
		      if (section->lma * opb - segment->p_paddr != seg_off)
			map->p_paddr_valid = false;
		    }
		  if (isec == section_count)
		    break;
		}
	    }
	}

      if (section_count == 0)
	map->p_vaddr_offset = segment->p_vaddr / opb;
      else if (map->p_paddr_valid)
	{
	  /* Account for padding before the first section in the segment.  */
	  bfd_vma hdr_size = 0;
	  if (map->includes_filehdr)
	    hdr_size = iehdr->e_ehsize;
	  if (map->includes_phdrs)
	    hdr_size += iehdr->e_phnum * iehdr->e_phentsize;

	  map->p_vaddr_offset = ((map->p_paddr + hdr_size) / opb
				 - (lowest_section ? lowest_section->lma : 0));
	}

      map->count = section_count;
      *pointer_to_map = map;
      pointer_to_map = &map->next;
    }

  elf_seg_map (obfd) = map_first;
  return true;
}

/* Copy private BFD data.  This copies or rewrites ELF program header
   information.  */

static bool
copy_private_bfd_data (bfd *ibfd, bfd *obfd)
{
  bfd_vma maxpagesize;

  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
    return true;

  if (elf_tdata (ibfd)->phdr == NULL)
    return true;

  if (ibfd->xvec == obfd->xvec)
    {
      /* Check to see if any sections in the input BFD
	 covered by ELF program header have changed.  */
      Elf_Internal_Phdr *segment;
      asection *section, *osec;
      unsigned int i, num_segments;
      Elf_Internal_Shdr *this_hdr;
      const struct elf_backend_data *bed;

      bed = get_elf_backend_data (ibfd);

      /* Regenerate the segment map if p_paddr is set to 0.  */
      if (bed->want_p_paddr_set_to_zero)
	goto rewrite;

      /* Initialize the segment mark field.  */
      for (section = obfd->sections; section != NULL;
	   section = section->next)
	section->segment_mark = false;

      num_segments = elf_elfheader (ibfd)->e_phnum;
      for (i = 0, segment = elf_tdata (ibfd)->phdr;
	   i < num_segments;
	   i++, segment++)
	{
	  /* PR binutils/3535.  The Solaris linker always sets the p_paddr
	     and p_memsz fields of special segments (DYNAMIC, INTERP) to 0
	     which severly confuses things, so always regenerate the segment
	     map in this case.  */
	  if (segment->p_paddr == 0
	      && segment->p_memsz == 0
	      && (segment->p_type == PT_INTERP
		  || segment->p_type == PT_DYNAMIC))
	    goto rewrite;

	  for (section = ibfd->sections;
	       section != NULL; section = section->next)
	    {
	      /* We mark the output section so that we know it comes
		 from the input BFD.  */
	      osec = section->output_section;
	      if (osec)
		osec->segment_mark = true;

	      /* Check if this section is covered by the segment.  */
	      this_hdr = &(elf_section_data(section)->this_hdr);
	      if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
		{
		  /* FIXME: Check if its output section is changed or
		     removed.  What else do we need to check?  */
		  if (osec == NULL
		      || section->flags != osec->flags
		      || section->lma != osec->lma
		      || section->vma != osec->vma
		      || section->size != osec->size
		      || section->rawsize != osec->rawsize
		      || section->alignment_power != osec->alignment_power)
		    goto rewrite;
		}
	    }
	}

      /* Check to see if any output section do not come from the
	 input BFD.  */
      for (section = obfd->sections; section != NULL;
	   section = section->next)
	{
	  if (!section->segment_mark)
	    goto rewrite;
	  else
	    section->segment_mark = false;
	}

      return copy_elf_program_header (ibfd, obfd);
    }

 rewrite:
  maxpagesize = 0;
  if (ibfd->xvec == obfd->xvec)
    {
      /* When rewriting program header, set the output maxpagesize to
	 the maximum alignment of input PT_LOAD segments.  */
      Elf_Internal_Phdr *segment;
      unsigned int i;
      unsigned int num_segments = elf_elfheader (ibfd)->e_phnum;

      for (i = 0, segment = elf_tdata (ibfd)->phdr;
	   i < num_segments;
	   i++, segment++)
	if (segment->p_type == PT_LOAD
	    && maxpagesize < segment->p_align)
	  {
	    /* PR 17512: file: f17299af.  */
	    if (segment->p_align > (bfd_vma) 1 << ((sizeof (bfd_vma) * 8) - 2))
	      /* xgettext:c-format */
	      _bfd_error_handler (_("%pB: warning: segment alignment of %#"
				    PRIx64 " is too large"),
				  ibfd, (uint64_t) segment->p_align);
	    else
	      maxpagesize = segment->p_align;
	  }
    }
  if (maxpagesize == 0)
    maxpagesize = get_elf_backend_data (obfd)->maxpagesize;

  return rewrite_elf_program_header (ibfd, obfd, maxpagesize);
}

/* Initialize private output section information from input section.  */

bool
_bfd_elf_init_private_section_data (bfd *ibfd,
				    asection *isec,
				    bfd *obfd,
				    asection *osec,
				    struct bfd_link_info *link_info)

{
  Elf_Internal_Shdr *ihdr, *ohdr;
  bool final_link = (link_info != NULL
		     && !bfd_link_relocatable (link_info));

  if (ibfd->xvec->flavour != bfd_target_elf_flavour
      || obfd->xvec->flavour != bfd_target_elf_flavour)
    return true;

  BFD_ASSERT (elf_section_data (osec) != NULL);

  /* If this is a known ABI section, ELF section type and flags may
     have been set up when OSEC was created.  For normal sections we
     allow the user to override the type and flags other than
     SHF_MASKOS and SHF_MASKPROC.  */
  if (elf_section_type (osec) == SHT_PROGBITS
      || elf_section_type (osec) == SHT_NOTE
      || elf_section_type (osec) == SHT_NOBITS)
    elf_section_type (osec) = SHT_NULL;
  /* For objcopy and relocatable link, copy the ELF section type from
     the input file if the BFD section flags are the same.  (If they
     are different the user may be doing something like
     "objcopy --set-section-flags .text=alloc,data".)  For a final
     link allow some flags that the linker clears to differ.  */
  if (elf_section_type (osec) == SHT_NULL
      && (osec->flags == isec->flags
	  || (final_link
	      && ((osec->flags ^ isec->flags)
		  & ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC)) == 0)))
    elf_section_type (osec) = elf_section_type (isec);

  /* FIXME: Is this correct for all OS/PROC specific flags?  */
  elf_section_flags (osec) = (elf_section_flags (isec)
			      & (SHF_MASKOS | SHF_MASKPROC));

  /* Copy sh_info from input for mbind section.  */
  if ((elf_tdata (ibfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0
      && elf_section_flags (isec) & SHF_GNU_MBIND)
    elf_section_data (osec)->this_hdr.sh_info
      = elf_section_data (isec)->this_hdr.sh_info;

  /* Set things up for objcopy and relocatable link.  The output
     SHT_GROUP section will have its elf_next_in_group pointing back
     to the input group members.  Ignore linker created group section.
     See elfNN_ia64_object_p in elfxx-ia64.c.  */
  if ((link_info == NULL
       || !link_info->resolve_section_groups)
      && (elf_sec_group (isec) == NULL
	  || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0))
    {
      if (elf_section_flags (isec) & SHF_GROUP)
	elf_section_flags (osec) |= SHF_GROUP;
      elf_next_in_group (osec) = elf_next_in_group (isec);
      elf_section_data (osec)->group = elf_section_data (isec)->group;
    }

  /* If not decompress, preserve SHF_COMPRESSED.  */
  if (!final_link && (ibfd->flags & BFD_DECOMPRESS) == 0)
    elf_section_flags (osec) |= (elf_section_flags (isec)
				 & SHF_COMPRESSED);

  ihdr = &elf_section_data (isec)->this_hdr;

  /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We
     don't use the output section of the linked-to section since it
     may be NULL at this point.  */
  if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0)
    {
      ohdr = &elf_section_data (osec)->this_hdr;
      ohdr->sh_flags |= SHF_LINK_ORDER;
      elf_linked_to_section (osec) = elf_linked_to_section (isec);
    }

  osec->use_rela_p = isec->use_rela_p;

  return true;
}

/* Copy private section information.  This copies over the entsize
   field, and sometimes the info field.  */

bool
_bfd_elf_copy_private_section_data (bfd *ibfd,
				    asection *isec,
				    bfd *obfd,
				    asection *osec)
{
  Elf_Internal_Shdr *ihdr, *ohdr;

  if (ibfd->xvec->flavour != bfd_target_elf_flavour
      || obfd->xvec->flavour != bfd_target_elf_flavour)
    return true;

  ihdr = &elf_section_data (isec)->this_hdr;
  ohdr = &elf_section_data (osec)->this_hdr;

  ohdr->sh_entsize = ihdr->sh_entsize;

  if (ihdr->sh_type == SHT_SYMTAB
      || ihdr->sh_type == SHT_DYNSYM
      || ihdr->sh_type == SHT_GNU_verneed
      || ihdr->sh_type == SHT_GNU_verdef)
    ohdr->sh_info = ihdr->sh_info;

  return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec,
					     NULL);
}

/* Look at all the SHT_GROUP sections in IBFD, making any adjustments
   necessary if we are removing either the SHT_GROUP section or any of
   the group member sections.  DISCARDED is the value that a section's
   output_section has if the section will be discarded, NULL when this
   function is called from objcopy, bfd_abs_section_ptr when called
   from the linker.  */

bool
_bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded)
{
  asection *isec;

  for (isec = ibfd->sections; isec != NULL; isec = isec->next)
    if (elf_section_type (isec) == SHT_GROUP)
      {
	asection *first = elf_next_in_group (isec);
	asection *s = first;
	bfd_size_type removed = 0;

	while (s != NULL)
	  {
	    /* If this member section is being output but the
	       SHT_GROUP section is not, then clear the group info
	       set up by _bfd_elf_copy_private_section_data.  */
	    if (s->output_section != discarded
		&& isec->output_section == discarded)
	      {
		elf_section_flags (s->output_section) &= ~SHF_GROUP;
		elf_group_name (s->output_section) = NULL;
	      }
	    else
	      {
		struct bfd_elf_section_data *elf_sec = elf_section_data (s);
		if (s->output_section == discarded
		    && isec->output_section != discarded)
		  {
		    /* Conversely, if the member section is not being
		       output but the SHT_GROUP section is, then adjust
		       its size.  */
		    removed += 4;
		    if (elf_sec->rel.hdr != NULL
			&& (elf_sec->rel.hdr->sh_flags & SHF_GROUP) != 0)
		      removed += 4;
		    if (elf_sec->rela.hdr != NULL
			&& (elf_sec->rela.hdr->sh_flags & SHF_GROUP) != 0)
		      removed += 4;
		  }
		else
		  {
		    /* Also adjust for zero-sized relocation member
		       section.  */
		    if (elf_sec->rel.hdr != NULL
			&& elf_sec->rel.hdr->sh_size == 0)
		      removed += 4;
		    if (elf_sec->rela.hdr != NULL
			&& elf_sec->rela.hdr->sh_size == 0)
		      removed += 4;
		  }
	      }
	    s = elf_next_in_group (s);
	    if (s == first)
	      break;
	  }
	if (removed != 0)
	  {
	    if (discarded != NULL)
	      {
		/* If we've been called for ld -r, then we need to
		   adjust the input section size.  */
		if (isec->rawsize == 0)
		  isec->rawsize = isec->size;
		isec->size = isec->rawsize - removed;
		if (isec->size <= 4)
		  {
		    isec->size = 0;
		    isec->flags |= SEC_EXCLUDE;
		  }
	      }
	    else if (isec->output_section != NULL)
	      {
		/* Adjust the output section size when called from
		   objcopy. */
		isec->output_section->size -= removed;
		if (isec->output_section->size <= 4)
		  {
		    isec->output_section->size = 0;
		    isec->output_section->flags |= SEC_EXCLUDE;
		  }
	      }
	  }
      }

  return true;
}

/* Copy private header information.  */

bool
_bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd)
{
  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
    return true;

  /* Copy over private BFD data if it has not already been copied.
     This must be done here, rather than in the copy_private_bfd_data
     entry point, because the latter is called after the section
     contents have been set, which means that the program headers have
     already been worked out.  */
  if (elf_seg_map (obfd) == NULL && elf_tdata (ibfd)->phdr != NULL)
    {
      if (! copy_private_bfd_data (ibfd, obfd))
	return false;
    }

  return _bfd_elf_fixup_group_sections (ibfd, NULL);
}

/* Copy private symbol information.  If this symbol is in a section
   which we did not map into a BFD section, try to map the section
   index correctly.  We use special macro definitions for the mapped
   section indices; these definitions are interpreted by the
   swap_out_syms function.  */

#define MAP_ONESYMTAB (SHN_HIOS + 1)
#define MAP_DYNSYMTAB (SHN_HIOS + 2)
#define MAP_STRTAB    (SHN_HIOS + 3)
#define MAP_SHSTRTAB  (SHN_HIOS + 4)
#define MAP_SYM_SHNDX (SHN_HIOS + 5)

bool
_bfd_elf_copy_private_symbol_data (bfd *ibfd,
				   asymbol *isymarg,
				   bfd *obfd,
				   asymbol *osymarg)
{
  elf_symbol_type *isym, *osym;

  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
    return true;

  isym = elf_symbol_from (isymarg);
  osym = elf_symbol_from (osymarg);

  if (isym != NULL
      && isym->internal_elf_sym.st_shndx != 0
      && osym != NULL
      && bfd_is_abs_section (isym->symbol.section))
    {
      unsigned int shndx;

      shndx = isym->internal_elf_sym.st_shndx;
      if (shndx == elf_onesymtab (ibfd))
	shndx = MAP_ONESYMTAB;
      else if (shndx == elf_dynsymtab (ibfd))
	shndx = MAP_DYNSYMTAB;
      else if (shndx == elf_strtab_sec (ibfd))
	shndx = MAP_STRTAB;
      else if (shndx == elf_shstrtab_sec (ibfd))
	shndx = MAP_SHSTRTAB;
      else if (find_section_in_list (shndx, elf_symtab_shndx_list (ibfd)))
	shndx = MAP_SYM_SHNDX;
      osym->internal_elf_sym.st_shndx = shndx;
    }

  return true;
}

/* Swap out the symbols.  */

static bool
swap_out_syms (bfd *abfd,
	       struct elf_strtab_hash **sttp,
	       int relocatable_p,
	       struct bfd_link_info *info)
{
  const struct elf_backend_data *bed;
  unsigned int symcount;
  asymbol **syms;
  struct elf_strtab_hash *stt;
  Elf_Internal_Shdr *symtab_hdr;
  Elf_Internal_Shdr *symtab_shndx_hdr;
  Elf_Internal_Shdr *symstrtab_hdr;
  struct elf_sym_strtab *symstrtab;
  bfd_byte *outbound_syms;
  bfd_byte *outbound_shndx;
  unsigned long outbound_syms_index;
  unsigned int idx;
  unsigned int num_locals;
  size_t amt;
  bool name_local_sections;

  if (!elf_map_symbols (abfd, &num_locals))
    return false;

  /* Dump out the symtabs.  */
  stt = _bfd_elf_strtab_init ();
  if (stt == NULL)
    return false;

  bed = get_elf_backend_data (abfd);
  symcount = bfd_get_symcount (abfd);
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  symtab_hdr->sh_type = SHT_SYMTAB;
  symtab_hdr->sh_entsize = bed->s->sizeof_sym;
  symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
  symtab_hdr->sh_info = num_locals + 1;
  symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;

  symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
  symstrtab_hdr->sh_type = SHT_STRTAB;

  /* Allocate buffer to swap out the .strtab section.  */
  if (_bfd_mul_overflow (symcount + 1, sizeof (*symstrtab), &amt)
      || (symstrtab = (struct elf_sym_strtab *) bfd_malloc (amt)) == NULL)
    {
      bfd_set_error (bfd_error_no_memory);
      _bfd_elf_strtab_free (stt);
      return false;
    }

  if (_bfd_mul_overflow (symcount + 1, bed->s->sizeof_sym, &amt)
      || (outbound_syms = (bfd_byte *) bfd_alloc (abfd, amt)) == NULL)
    {
    error_no_mem:
      bfd_set_error (bfd_error_no_memory);
    error_return:
      free (symstrtab);
      _bfd_elf_strtab_free (stt);
      return false;
    }
  symtab_hdr->contents = outbound_syms;
  outbound_syms_index = 0;

  outbound_shndx = NULL;

  if (elf_symtab_shndx_list (abfd))
    {
      symtab_shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr;
      if (symtab_shndx_hdr->sh_name != 0)
	{
	  if (_bfd_mul_overflow (symcount + 1,
				 sizeof (Elf_External_Sym_Shndx), &amt))
	    goto error_no_mem;
	  outbound_shndx =  (bfd_byte *) bfd_zalloc (abfd, amt);
	  if (outbound_shndx == NULL)
	    goto error_return;

	  symtab_shndx_hdr->contents = outbound_shndx;
	  symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
	  symtab_shndx_hdr->sh_size = amt;
	  symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
	  symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
	}
      /* FIXME: What about any other headers in the list ?  */
    }

  /* Now generate the data (for "contents").  */
  {
    /* Fill in zeroth symbol and swap it out.  */
    Elf_Internal_Sym sym;
    sym.st_name = 0;
    sym.st_value = 0;
    sym.st_size = 0;
    sym.st_info = 0;
    sym.st_other = 0;
    sym.st_shndx = SHN_UNDEF;
    sym.st_target_internal = 0;
    symstrtab[0].sym = sym;
    symstrtab[0].dest_index = outbound_syms_index;
    outbound_syms_index++;
  }

  name_local_sections
    = (bed->elf_backend_name_local_section_symbols
       && bed->elf_backend_name_local_section_symbols (abfd));

  syms = bfd_get_outsymbols (abfd);
  for (idx = 0; idx < symcount;)
    {
      Elf_Internal_Sym sym;
      bfd_vma value = syms[idx]->value;
      elf_symbol_type *type_ptr;
      flagword flags = syms[idx]->flags;
      int type;

      if (!name_local_sections
	  && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
	{
	  /* Local section symbols have no name.  */
	  sym.st_name = (unsigned long) -1;
	}
      else
	{
	  /* Call _bfd_elf_strtab_offset after _bfd_elf_strtab_finalize
	     to get the final offset for st_name.  */
	  sym.st_name
	    = (unsigned long) _bfd_elf_strtab_add (stt, syms[idx]->name,
						   false);
	  if (sym.st_name == (unsigned long) -1)
	    goto error_return;
	}

      type_ptr = elf_symbol_from (syms[idx]);

      if ((flags & BSF_SECTION_SYM) == 0
	  && bfd_is_com_section (syms[idx]->section))
	{
	  /* ELF common symbols put the alignment into the `value' field,
	     and the size into the `size' field.  This is backwards from
	     how BFD handles it, so reverse it here.  */
	  sym.st_size = value;
	  if (type_ptr == NULL
	      || type_ptr->internal_elf_sym.st_value == 0)
	    sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
	  else
	    sym.st_value = type_ptr->internal_elf_sym.st_value;
	  sym.st_shndx = _bfd_elf_section_from_bfd_section
	    (abfd, syms[idx]->section);
	}
      else
	{
	  asection *sec = syms[idx]->section;
	  unsigned int shndx;

	  if (sec->output_section)
	    {
	      value += sec->output_offset;
	      sec = sec->output_section;
	    }

	  /* Don't add in the section vma for relocatable output.  */
	  if (! relocatable_p)
	    value += sec->vma;
	  sym.st_value = value;
	  sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;

	  if (bfd_is_abs_section (sec)
	      && type_ptr != NULL
	      && type_ptr->internal_elf_sym.st_shndx != 0)
	    {
	      /* This symbol is in a real ELF section which we did
		 not create as a BFD section.  Undo the mapping done
		 by copy_private_symbol_data.  */
	      shndx = type_ptr->internal_elf_sym.st_shndx;
	      switch (shndx)
		{
		case MAP_ONESYMTAB:
		  shndx = elf_onesymtab (abfd);
		  break;
		case MAP_DYNSYMTAB:
		  shndx = elf_dynsymtab (abfd);
		  break;
		case MAP_STRTAB:
		  shndx = elf_strtab_sec (abfd);
		  break;
		case MAP_SHSTRTAB:
		  shndx = elf_shstrtab_sec (abfd);
		  break;
		case MAP_SYM_SHNDX:
		  if (elf_symtab_shndx_list (abfd))
		    shndx = elf_symtab_shndx_list (abfd)->ndx;
		  break;
		case SHN_COMMON:
		case SHN_ABS:
		  shndx = SHN_ABS;
		  break;
		default:
		  if (shndx >= SHN_LOPROC && shndx <= SHN_HIOS)
		    {
		      if (bed->symbol_section_index)
			shndx = bed->symbol_section_index (abfd, type_ptr);
		      /* Otherwise just leave the index alone.  */
		    }
		  else
		    {
		      if (shndx > SHN_HIOS && shndx < SHN_HIRESERVE)
			_bfd_error_handler (_("%pB: \
Unable to handle section index %x in ELF symbol.  Using ABS instead."),
					  abfd, shndx);
		      shndx = SHN_ABS;
		    }
		  break;
		}
	    }
	  else
	    {
	      shndx = _bfd_elf_section_from_bfd_section (abfd, sec);

	      if (shndx == SHN_BAD)
		{
		  asection *sec2;

		  /* Writing this would be a hell of a lot easier if
		     we had some decent documentation on bfd, and
		     knew what to expect of the library, and what to
		     demand of applications.  For example, it
		     appears that `objcopy' might not set the
		     section of a symbol to be a section that is
		     actually in the output file.  */
		  sec2 = bfd_get_section_by_name (abfd, sec->name);
		  if (sec2 != NULL)
		    shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
		  if (shndx == SHN_BAD)
		    {
		      /* xgettext:c-format */
		      _bfd_error_handler
			(_("unable to find equivalent output section"
			   " for symbol '%s' from section '%s'"),
			 syms[idx]->name ? syms[idx]->name : "<Local sym>",
			 sec->name);
		      bfd_set_error (bfd_error_invalid_operation);
		      goto error_return;
		    }
		}
	    }

	  sym.st_shndx = shndx;
	}

      if ((flags & BSF_THREAD_LOCAL) != 0)
	type = STT_TLS;
      else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0)
	type = STT_GNU_IFUNC;
      else if ((flags & BSF_FUNCTION) != 0)
	type = STT_FUNC;
      else if ((flags & BSF_OBJECT) != 0)
	type = STT_OBJECT;
      else if ((flags & BSF_RELC) != 0)
	type = STT_RELC;
      else if ((flags & BSF_SRELC) != 0)
	type = STT_SRELC;
      else
	type = STT_NOTYPE;

      if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
	type = STT_TLS;

      /* Processor-specific types.  */
      if (type_ptr != NULL
	  && bed->elf_backend_get_symbol_type)
	type = ((*bed->elf_backend_get_symbol_type)
		(&type_ptr->internal_elf_sym, type));

      if (flags & BSF_SECTION_SYM)
	{
	  if (flags & BSF_GLOBAL)
	    sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
	  else
	    sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
	}
      else if (bfd_is_com_section (syms[idx]->section))
	{
	  if (type != STT_TLS)
	    {
	      if ((abfd->flags & BFD_CONVERT_ELF_COMMON))
		type = ((abfd->flags & BFD_USE_ELF_STT_COMMON)
			? STT_COMMON : STT_OBJECT);
	      else
		type = ((flags & BSF_ELF_COMMON) != 0
			? STT_COMMON : STT_OBJECT);
	    }
	  sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
	}
      else if (bfd_is_und_section (syms[idx]->section))
	sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
				    ? STB_WEAK
				    : STB_GLOBAL),
				   type);
      else if (flags & BSF_FILE)
	sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
      else
	{
	  int bind = STB_LOCAL;

	  if (flags & BSF_LOCAL)
	    bind = STB_LOCAL;
	  else if (flags & BSF_GNU_UNIQUE)
	    bind = STB_GNU_UNIQUE;
	  else if (flags & BSF_WEAK)
	    bind = STB_WEAK;
	  else if (flags & BSF_GLOBAL)
	    bind = STB_GLOBAL;

	  sym.st_info = ELF_ST_INFO (bind, type);
	}

      if (type_ptr != NULL)
	{
	  sym.st_other = type_ptr->internal_elf_sym.st_other;
	  sym.st_target_internal
	    = type_ptr->internal_elf_sym.st_target_internal;
	}
      else
	{
	  sym.st_other = 0;
	  sym.st_target_internal = 0;
	}

      idx++;
      symstrtab[idx].sym = sym;
      symstrtab[idx].dest_index = outbound_syms_index;

      outbound_syms_index++;
    }

  /* Finalize the .strtab section.  */
  _bfd_elf_strtab_finalize (stt);

  /* Swap out the .strtab section.  */
  for (idx = 0; idx <= symcount; idx++)
    {
      struct elf_sym_strtab *elfsym = &symstrtab[idx];
      if (elfsym->sym.st_name == (unsigned long) -1)
	elfsym->sym.st_name = 0;
      else
	elfsym->sym.st_name = _bfd_elf_strtab_offset (stt,
						      elfsym->sym.st_name);
      if (info && info->callbacks->ctf_new_symbol)
	info->callbacks->ctf_new_symbol (elfsym->dest_index,
					 &elfsym->sym);

      /* Inform the linker of the addition of this symbol.  */

      bed->s->swap_symbol_out (abfd, &elfsym->sym,
			       (outbound_syms
				+ (elfsym->dest_index
				   * bed->s->sizeof_sym)),
			       NPTR_ADD (outbound_shndx,
					 (elfsym->dest_index
					  * sizeof (Elf_External_Sym_Shndx))));
    }
  free (symstrtab);

  *sttp = stt;
  symstrtab_hdr->sh_size = _bfd_elf_strtab_size (stt);
  symstrtab_hdr->sh_type = SHT_STRTAB;
  symstrtab_hdr->sh_flags = bed->elf_strtab_flags;
  symstrtab_hdr->sh_addr = 0;
  symstrtab_hdr->sh_entsize = 0;
  symstrtab_hdr->sh_link = 0;
  symstrtab_hdr->sh_info = 0;
  symstrtab_hdr->sh_addralign = 1;

  return true;
}

/* Return the number of bytes required to hold the symtab vector.

   Note that we base it on the count plus 1, since we will null terminate
   the vector allocated based on this size.  However, the ELF symbol table
   always has a dummy entry as symbol #0, so it ends up even.  */

long
_bfd_elf_get_symtab_upper_bound (bfd *abfd)
{
  bfd_size_type symcount;
  long symtab_size;
  Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;

  symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
  if (symcount > LONG_MAX / sizeof (asymbol *))
    {
      bfd_set_error (bfd_error_file_too_big);
      return -1;
    }
  symtab_size = symcount * (sizeof (asymbol *));
  if (symcount == 0)
    symtab_size = sizeof (asymbol *);
  else if (!bfd_write_p (abfd))
    {
      ufile_ptr filesize = bfd_get_file_size (abfd);

      if (filesize != 0 && (unsigned long) symtab_size > filesize)
	{
	  bfd_set_error (bfd_error_file_truncated);
	  return -1;
	}
    }

  return symtab_size;
}

long
_bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd)
{
  bfd_size_type symcount;
  long symtab_size;
  Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;

  if (elf_dynsymtab (abfd) == 0)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return -1;
    }

  symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
  if (symcount > LONG_MAX / sizeof (asymbol *))
    {
      bfd_set_error (bfd_error_file_too_big);
      return -1;
    }
  symtab_size = symcount * (sizeof (asymbol *));
  if (symcount == 0)
    symtab_size = sizeof (asymbol *);
  else if (!bfd_write_p (abfd))
    {
      ufile_ptr filesize = bfd_get_file_size (abfd);

      if (filesize != 0 && (unsigned long) symtab_size > filesize)
	{
	  bfd_set_error (bfd_error_file_truncated);
	  return -1;
	}
    }

  return symtab_size;
}

long
_bfd_elf_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
{
  if (asect->reloc_count != 0 && !bfd_write_p (abfd))
    {
      /* Sanity check reloc section size.  */
      ufile_ptr filesize = bfd_get_file_size (abfd);

      if (filesize != 0)
	{
	  struct bfd_elf_section_data *d = elf_section_data (asect);
	  bfd_size_type rel_size = d->rel.hdr ? d->rel.hdr->sh_size : 0;
	  bfd_size_type rela_size = d->rela.hdr ? d->rela.hdr->sh_size : 0;

	  if (rel_size + rela_size > filesize
	      || rel_size + rela_size < rel_size)
	    {
	      bfd_set_error (bfd_error_file_truncated);
	      return -1;
	    }
	}
    }

#if SIZEOF_LONG == SIZEOF_INT
  if (asect->reloc_count >= LONG_MAX / sizeof (arelent *))
    {
      bfd_set_error (bfd_error_file_too_big);
      return -1;
    }
#endif
  return (asect->reloc_count + 1L) * sizeof (arelent *);
}

/* Canonicalize the relocs.  */

long
_bfd_elf_canonicalize_reloc (bfd *abfd,
			     sec_ptr section,
			     arelent **relptr,
			     asymbol **symbols)
{
  arelent *tblptr;
  unsigned int i;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  if (! bed->s->slurp_reloc_table (abfd, section, symbols, false))
    return -1;

  tblptr = section->relocation;
  for (i = 0; i < section->reloc_count; i++)
    *relptr++ = tblptr++;

  *relptr = NULL;

  return section->reloc_count;
}

long
_bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  long symcount = bed->s->slurp_symbol_table (abfd, allocation, false);

  if (symcount >= 0)
    abfd->symcount = symcount;
  return symcount;
}

long
_bfd_elf_canonicalize_dynamic_symtab (bfd *abfd,
				      asymbol **allocation)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  long symcount = bed->s->slurp_symbol_table (abfd, allocation, true);

  if (symcount >= 0)
    abfd->dynsymcount = symcount;
  return symcount;
}

/* Return the size required for the dynamic reloc entries.  Any loadable
   section that was actually installed in the BFD, and has type SHT_REL
   or SHT_RELA, and uses the dynamic symbol table, is considered to be a
   dynamic reloc section.  */

long
_bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd)
{
  bfd_size_type count, ext_rel_size;
  asection *s;

  if (elf_dynsymtab (abfd) == 0)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return -1;
    }

  count = 1;
  ext_rel_size = 0;
  for (s = abfd->sections; s != NULL; s = s->next)
    if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
	&& (elf_section_data (s)->this_hdr.sh_type == SHT_REL
	    || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
      {
	ext_rel_size += s->size;
	if (ext_rel_size < s->size)
	  {
	    bfd_set_error (bfd_error_file_truncated);
	    return -1;
	  }
	count += s->size / elf_section_data (s)->this_hdr.sh_entsize;
	if (count > LONG_MAX / sizeof (arelent *))
	  {
	    bfd_set_error (bfd_error_file_too_big);
	    return -1;
	  }
      }
  if (count > 1 && !bfd_write_p (abfd))
    {
      /* Sanity check reloc section sizes.  */
      ufile_ptr filesize = bfd_get_file_size (abfd);
      if (filesize != 0 && ext_rel_size > filesize)
	{
	  bfd_set_error (bfd_error_file_truncated);
	  return -1;
	}
    }
  return count * sizeof (arelent *);
}

/* Canonicalize the dynamic relocation entries.  Note that we return the
   dynamic relocations as a single block, although they are actually
   associated with particular sections; the interface, which was
   designed for SunOS style shared libraries, expects that there is only
   one set of dynamic relocs.  Any loadable section that was actually
   installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the
   dynamic symbol table, is considered to be a dynamic reloc section.  */

long
_bfd_elf_canonicalize_dynamic_reloc (bfd *abfd,
				     arelent **storage,
				     asymbol **syms)
{
  bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool);
  asection *s;
  long ret;

  if (elf_dynsymtab (abfd) == 0)
    {
      bfd_set_error (bfd_error_invalid_operation);
      return -1;
    }

  slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
  ret = 0;
  for (s = abfd->sections; s != NULL; s = s->next)
    {
      if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
	  && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
	      || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
	{
	  arelent *p;
	  long count, i;

	  if (! (*slurp_relocs) (abfd, s, syms, true))
	    return -1;
	  count = s->size / elf_section_data (s)->this_hdr.sh_entsize;
	  p = s->relocation;
	  for (i = 0; i < count; i++)
	    *storage++ = p++;
	  ret += count;
	}
    }

  *storage = NULL;

  return ret;
}

/* Read in the version information.  */

bool
_bfd_elf_slurp_version_tables (bfd *abfd, bool default_imported_symver)
{
  bfd_byte *contents = NULL;
  unsigned int freeidx = 0;
  size_t amt;

  if (elf_dynverref (abfd) != 0)
    {
      Elf_Internal_Shdr *hdr;
      Elf_External_Verneed *everneed;
      Elf_Internal_Verneed *iverneed;
      unsigned int i;
      bfd_byte *contents_end;

      hdr = &elf_tdata (abfd)->dynverref_hdr;

      if (hdr->sh_info > hdr->sh_size / sizeof (Elf_External_Verneed))
	{
	error_return_bad_verref:
	  _bfd_error_handler
	    (_("%pB: .gnu.version_r invalid entry"), abfd);
	  bfd_set_error (bfd_error_bad_value);
	error_return_verref:
	  elf_tdata (abfd)->verref = NULL;
	  elf_tdata (abfd)->cverrefs = 0;
	  goto error_return;
	}

      if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0)
	goto error_return_verref;
      contents = _bfd_malloc_and_read (abfd, hdr->sh_size, hdr->sh_size);
      if (contents == NULL)
	goto error_return_verref;

      if (_bfd_mul_overflow (hdr->sh_info, sizeof (Elf_Internal_Verneed), &amt))
	{
	  bfd_set_error (bfd_error_file_too_big);
	  goto error_return_verref;
	}
      if (amt == 0)
	goto error_return_verref;
      elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) bfd_zalloc (abfd, amt);
      if (elf_tdata (abfd)->verref == NULL)
	goto error_return_verref;

      BFD_ASSERT (sizeof (Elf_External_Verneed)
		  == sizeof (Elf_External_Vernaux));
      contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed);
      everneed = (Elf_External_Verneed *) contents;
      iverneed = elf_tdata (abfd)->verref;
      for (i = 0; i < hdr->sh_info; i++, iverneed++)
	{
	  Elf_External_Vernaux *evernaux;
	  Elf_Internal_Vernaux *ivernaux;
	  unsigned int j;

	  _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);

	  iverneed->vn_bfd = abfd;

	  iverneed->vn_filename =
	    bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
					     iverneed->vn_file);
	  if (iverneed->vn_filename == NULL)
	    goto error_return_bad_verref;

	  if (iverneed->vn_cnt == 0)
	    iverneed->vn_auxptr = NULL;
	  else
	    {
	      if (_bfd_mul_overflow (iverneed->vn_cnt,
				     sizeof (Elf_Internal_Vernaux), &amt))
		{
		  bfd_set_error (bfd_error_file_too_big);
		  goto error_return_verref;
		}
	      iverneed->vn_auxptr = (struct elf_internal_vernaux *)
		bfd_alloc (abfd, amt);
	      if (iverneed->vn_auxptr == NULL)
		goto error_return_verref;
	    }

	  if (iverneed->vn_aux
	      > (size_t) (contents_end - (bfd_byte *) everneed))
	    goto error_return_bad_verref;

	  evernaux = ((Elf_External_Vernaux *)
		      ((bfd_byte *) everneed + iverneed->vn_aux));
	  ivernaux = iverneed->vn_auxptr;
	  for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
	    {
	      _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);

	      ivernaux->vna_nodename =
		bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
						 ivernaux->vna_name);
	      if (ivernaux->vna_nodename == NULL)
		goto error_return_bad_verref;

	      if (ivernaux->vna_other > freeidx)
		freeidx = ivernaux->vna_other;

	      ivernaux->vna_nextptr = NULL;
	      if (ivernaux->vna_next == 0)
		{
		  iverneed->vn_cnt = j + 1;
		  break;
		}
	      if (j + 1 < iverneed->vn_cnt)
		ivernaux->vna_nextptr = ivernaux + 1;

	      if (ivernaux->vna_next
		  > (size_t) (contents_end - (bfd_byte *) evernaux))
		goto error_return_bad_verref;

	      evernaux = ((Elf_External_Vernaux *)
			  ((bfd_byte *) evernaux + ivernaux->vna_next));
	    }

	  iverneed->vn_nextref = NULL;
	  if (iverneed->vn_next == 0)
	    break;
	  if (i + 1 < hdr->sh_info)
	    iverneed->vn_nextref = iverneed + 1;

	  if (iverneed->vn_next
	      > (size_t) (contents_end - (bfd_byte *) everneed))
	    goto error_return_bad_verref;

	  everneed = ((Elf_External_Verneed *)
		      ((bfd_byte *) everneed + iverneed->vn_next));
	}
      elf_tdata (abfd)->cverrefs = i;

      free (contents);
      contents = NULL;
    }

  if (elf_dynverdef (abfd) != 0)
    {
      Elf_Internal_Shdr *hdr;
      Elf_External_Verdef *everdef;
      Elf_Internal_Verdef *iverdef;
      Elf_Internal_Verdef *iverdefarr;
      Elf_Internal_Verdef iverdefmem;
      unsigned int i;
      unsigned int maxidx;
      bfd_byte *contents_end_def, *contents_end_aux;

      hdr = &elf_tdata (abfd)->dynverdef_hdr;

      if (hdr->sh_size < sizeof (Elf_External_Verdef))
	{
	error_return_bad_verdef:
	  _bfd_error_handler
	    (_("%pB: .gnu.version_d invalid entry"), abfd);
	  bfd_set_error (bfd_error_bad_value);
	error_return_verdef:
	  elf_tdata (abfd)->verdef = NULL;
	  elf_tdata (abfd)->cverdefs = 0;
	  goto error_return;
	}

      if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0)
	goto error_return_verdef;
      contents = _bfd_malloc_and_read (abfd, hdr->sh_size, hdr->sh_size);
      if (contents == NULL)
	goto error_return_verdef;

      BFD_ASSERT (sizeof (Elf_External_Verdef)
		  >= sizeof (Elf_External_Verdaux));
      contents_end_def = contents + hdr->sh_size
			 - sizeof (Elf_External_Verdef);
      contents_end_aux = contents + hdr->sh_size
			 - sizeof (Elf_External_Verdaux);

      /* We know the number of entries in the section but not the maximum
	 index.  Therefore we have to run through all entries and find
	 the maximum.  */
      everdef = (Elf_External_Verdef *) contents;
      maxidx = 0;
      for (i = 0; i < hdr->sh_info; ++i)
	{
	  _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);

	  if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) == 0)
	    goto error_return_bad_verdef;
	  if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
	    maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);

	  if (iverdefmem.vd_next == 0)
	    break;

	  if (iverdefmem.vd_next
	      > (size_t) (contents_end_def - (bfd_byte *) everdef))
	    goto error_return_bad_verdef;

	  everdef = ((Elf_External_Verdef *)
		     ((bfd_byte *) everdef + iverdefmem.vd_next));
	}

      if (default_imported_symver)
	{
	  if (freeidx > maxidx)
	    maxidx = ++freeidx;
	  else
	    freeidx = ++maxidx;
	}
      if (_bfd_mul_overflow (maxidx, sizeof (Elf_Internal_Verdef), &amt))
	{
	  bfd_set_error (bfd_error_file_too_big);
	  goto error_return_verdef;
	}

      if (amt == 0)
	goto error_return_verdef;
      elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
      if (elf_tdata (abfd)->verdef == NULL)
	goto error_return_verdef;

      elf_tdata (abfd)->cverdefs = maxidx;

      everdef = (Elf_External_Verdef *) contents;
      iverdefarr = elf_tdata (abfd)->verdef;
      for (i = 0; i < hdr->sh_info; i++)
	{
	  Elf_External_Verdaux *everdaux;
	  Elf_Internal_Verdaux *iverdaux;
	  unsigned int j;

	  _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);

	  if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0)
	    goto error_return_bad_verdef;

	  iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
	  memcpy (iverdef, &iverdefmem, offsetof (Elf_Internal_Verdef, vd_bfd));

	  iverdef->vd_bfd = abfd;

	  if (iverdef->vd_cnt == 0)
	    iverdef->vd_auxptr = NULL;
	  else
	    {
	      if (_bfd_mul_overflow (iverdef->vd_cnt,
				     sizeof (Elf_Internal_Verdaux), &amt))
		{
		  bfd_set_error (bfd_error_file_too_big);
		  goto error_return_verdef;
		}
	      iverdef->vd_auxptr = (struct elf_internal_verdaux *)
		bfd_alloc (abfd, amt);
	      if (iverdef->vd_auxptr == NULL)
		goto error_return_verdef;
	    }

	  if (iverdef->vd_aux
	      > (size_t) (contents_end_aux - (bfd_byte *) everdef))
	    goto error_return_bad_verdef;

	  everdaux = ((Elf_External_Verdaux *)
		      ((bfd_byte *) everdef + iverdef->vd_aux));
	  iverdaux = iverdef->vd_auxptr;
	  for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
	    {
	      _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);

	      iverdaux->vda_nodename =
		bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
						 iverdaux->vda_name);
	      if (iverdaux->vda_nodename == NULL)
		goto error_return_bad_verdef;

	      iverdaux->vda_nextptr = NULL;
	      if (iverdaux->vda_next == 0)
		{
		  iverdef->vd_cnt = j + 1;
		  break;
		}
	      if (j + 1 < iverdef->vd_cnt)
		iverdaux->vda_nextptr = iverdaux + 1;

	      if (iverdaux->vda_next
		  > (size_t) (contents_end_aux - (bfd_byte *) everdaux))
		goto error_return_bad_verdef;

	      everdaux = ((Elf_External_Verdaux *)
			  ((bfd_byte *) everdaux + iverdaux->vda_next));
	    }

	  iverdef->vd_nodename = NULL;
	  if (iverdef->vd_cnt)
	    iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;

	  iverdef->vd_nextdef = NULL;
	  if (iverdef->vd_next == 0)
	    break;
	  if ((size_t) (iverdef - iverdefarr) + 1 < maxidx)
	    iverdef->vd_nextdef = iverdef + 1;

	  everdef = ((Elf_External_Verdef *)
		     ((bfd_byte *) everdef + iverdef->vd_next));
	}

      free (contents);
      contents = NULL;
    }
  else if (default_imported_symver)
    {
      if (freeidx < 3)
	freeidx = 3;
      else
	freeidx++;

      if (_bfd_mul_overflow (freeidx, sizeof (Elf_Internal_Verdef), &amt))
	{
	  bfd_set_error (bfd_error_file_too_big);
	  goto error_return;
	}
      if (amt == 0)
	goto error_return;
      elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
      if (elf_tdata (abfd)->verdef == NULL)
	goto error_return;

      elf_tdata (abfd)->cverdefs = freeidx;
    }

  /* Create a default version based on the soname.  */
  if (default_imported_symver)
    {
      Elf_Internal_Verdef *iverdef;
      Elf_Internal_Verdaux *iverdaux;

      iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];

      iverdef->vd_version = VER_DEF_CURRENT;
      iverdef->vd_flags = 0;
      iverdef->vd_ndx = freeidx;
      iverdef->vd_cnt = 1;

      iverdef->vd_bfd = abfd;

      iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd);
      if (iverdef->vd_nodename == NULL)
	goto error_return_verdef;
      iverdef->vd_nextdef = NULL;
      iverdef->vd_auxptr = ((struct elf_internal_verdaux *)
			    bfd_zalloc (abfd, sizeof (Elf_Internal_Verdaux)));
      if (iverdef->vd_auxptr == NULL)
	goto error_return_verdef;

      iverdaux = iverdef->vd_auxptr;
      iverdaux->vda_nodename = iverdef->vd_nodename;
    }

  return true;

 error_return:
  free (contents);
  return false;
}

asymbol *
_bfd_elf_make_empty_symbol (bfd *abfd)
{
  elf_symbol_type *newsym;

  newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (*newsym));
  if (!newsym)
    return NULL;
  newsym->symbol.the_bfd = abfd;
  return &newsym->symbol;
}

void
_bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
			  asymbol *symbol,
			  symbol_info *ret)
{
  bfd_symbol_info (symbol, ret);
}

/* Return whether a symbol name implies a local symbol.  Most targets
   use this function for the is_local_label_name entry point, but some
   override it.  */

bool
_bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
			      const char *name)
{
  /* Normal local symbols start with ``.L''.  */
  if (name[0] == '.' && name[1] == 'L')
    return true;

  /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
     DWARF debugging symbols starting with ``..''.  */
  if (name[0] == '.' && name[1] == '.')
    return true;

  /* gcc will sometimes generate symbols beginning with ``_.L_'' when
     emitting DWARF debugging output.  I suspect this is actually a
     small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
     ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
     underscore to be emitted on some ELF targets).  For ease of use,
     we treat such symbols as local.  */
  if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
    return true;

  /* Treat assembler generated fake symbols, dollar local labels and
     forward-backward labels (aka local labels) as locals.
     These labels have the form:

       L0^A.*				       (fake symbols)

       [.]?L[0123456789]+{^A|^B}[0123456789]*  (local labels)

     Versions which start with .L will have already been matched above,
     so we only need to match the rest.  */
  if (name[0] == 'L' && ISDIGIT (name[1]))
    {
      bool ret = false;
      const char * p;
      char c;

      for (p = name + 2; (c = *p); p++)
	{
	  if (c == 1 || c == 2)
	    {
	      if (c == 1 && p == name + 2)
		/* A fake symbol.  */
		return true;

	      /* FIXME: We are being paranoid here and treating symbols like
		 L0^Bfoo as if there were non-local, on the grounds that the
		 assembler will never generate them.  But can any symbol
		 containing an ASCII value in the range 1-31 ever be anything
		 other than some kind of local ?  */
	      ret = true;
	    }

	  if (! ISDIGIT (c))
	    {
	      ret = false;
	      break;
	    }
	}
      return ret;
    }

  return false;
}

alent *
_bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED,
		     asymbol *symbol ATTRIBUTE_UNUSED)
{
  abort ();
  return NULL;
}

bool
_bfd_elf_set_arch_mach (bfd *abfd,
			enum bfd_architecture arch,
			unsigned long machine)
{
  /* If this isn't the right architecture for this backend, and this
     isn't the generic backend, fail.  */
  if (arch != get_elf_backend_data (abfd)->arch
      && arch != bfd_arch_unknown
      && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
    return false;

  return bfd_default_set_arch_mach (abfd, arch, machine);
}

/* Find the nearest line to a particular section and offset,
   for error reporting.  */

bool
_bfd_elf_find_nearest_line (bfd *abfd,
			    asymbol **symbols,
			    asection *section,
			    bfd_vma offset,
			    const char **filename_ptr,
			    const char **functionname_ptr,
			    unsigned int *line_ptr,
			    unsigned int *discriminator_ptr)
{
  return _bfd_elf_find_nearest_line_with_alt (abfd, NULL, symbols, section,
					      offset, filename_ptr,
					      functionname_ptr, line_ptr,
					      discriminator_ptr);
}

/* Find the nearest line to a particular section and offset,
   for error reporting.  ALT_BFD representing a .gnu_debugaltlink file
   can be optionally specified.  */

bool
_bfd_elf_find_nearest_line_with_alt (bfd *abfd,
				     const char *alt_filename,
				     asymbol **symbols,
				     asection *section,
				     bfd_vma offset,
				     const char **filename_ptr,
				     const char **functionname_ptr,
				     unsigned int *line_ptr,
				     unsigned int *discriminator_ptr)
{
  bool found;

  if (_bfd_dwarf2_find_nearest_line_with_alt (abfd, alt_filename, symbols, NULL,
					      section, offset, filename_ptr,
					      functionname_ptr, line_ptr,
					      discriminator_ptr,
					      dwarf_debug_sections,
					      &elf_tdata (abfd)->dwarf2_find_line_info))
    return true;

  if (_bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset,
				     filename_ptr, functionname_ptr, line_ptr))
    {
      if (!*functionname_ptr)
	_bfd_elf_find_function (abfd, symbols, section, offset,
				*filename_ptr ? NULL : filename_ptr,
				functionname_ptr);
      return true;
    }

  if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
					     &found, filename_ptr,
					     functionname_ptr, line_ptr,
					     &elf_tdata (abfd)->line_info))
    return false;
  if (found && (*functionname_ptr || *line_ptr))
    return true;

  if (symbols == NULL)
    return false;

  if (! _bfd_elf_find_function (abfd, symbols, section, offset,
				filename_ptr, functionname_ptr))
    return false;

  *line_ptr = 0;
  return true;
}

/* Find the line for a symbol.  */

bool
_bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol,
		    const char **filename_ptr, unsigned int *line_ptr)
{
  struct elf_obj_tdata *tdata = elf_tdata (abfd);
  return _bfd_dwarf2_find_nearest_line (abfd, symbols, symbol, NULL, 0,
					filename_ptr, NULL, line_ptr, NULL,
					dwarf_debug_sections,
					&tdata->dwarf2_find_line_info);
}

/* After a call to bfd_find_nearest_line, successive calls to
   bfd_find_inliner_info can be used to get source information about
   each level of function inlining that terminated at the address
   passed to bfd_find_nearest_line.  Currently this is only supported
   for DWARF2 with appropriate DWARF3 extensions. */

bool
_bfd_elf_find_inliner_info (bfd *abfd,
			    const char **filename_ptr,
			    const char **functionname_ptr,
			    unsigned int *line_ptr)
{
  struct elf_obj_tdata *tdata = elf_tdata (abfd);
  return _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
					functionname_ptr, line_ptr,
					&tdata->dwarf2_find_line_info);
}

int
_bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  int ret = bed->s->sizeof_ehdr;

  if (!bfd_link_relocatable (info))
    {
      bfd_size_type phdr_size = elf_program_header_size (abfd);

      if (phdr_size == (bfd_size_type) -1)
	{
	  struct elf_segment_map *m;

	  phdr_size = 0;
	  for (m = elf_seg_map (abfd); m != NULL; m = m->next)
	    phdr_size += bed->s->sizeof_phdr;

	  if (phdr_size == 0)
	    phdr_size = get_program_header_size (abfd, info);
	}

      elf_program_header_size (abfd) = phdr_size;
      ret += phdr_size;
    }

  return ret;
}

bool
_bfd_elf_set_section_contents (bfd *abfd,
			       sec_ptr section,
			       const void *location,
			       file_ptr offset,
			       bfd_size_type count)
{
  Elf_Internal_Shdr *hdr;

  if (! abfd->output_has_begun
      && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
    return false;

  if (!count)
    return true;

  hdr = &elf_section_data (section)->this_hdr;
  if (hdr->sh_offset == (file_ptr) -1)
    {
      unsigned char *contents;

      if (bfd_section_is_ctf (section))
	/* Nothing to do with this section: the contents are generated
	   later.  */
	return true;

      if ((offset + count) > hdr->sh_size)
	{
	  _bfd_error_handler
	    (_("%pB:%pA: error: attempting to write"
	       " over the end of the section"),
	     abfd, section);

	  bfd_set_error (bfd_error_invalid_operation);
	  return false;
	}

      contents = hdr->contents;
      if (contents == NULL)
	{
	  _bfd_error_handler
	    (_("%pB:%pA: error: attempting to write"
	       " section into an empty buffer"),
	     abfd, section);

	  bfd_set_error (bfd_error_invalid_operation);
	  return false;
	}

      memcpy (contents + offset, location, count);
      return true;
    }

  return _bfd_generic_set_section_contents (abfd, section,
					    location, offset, count);
}

bool
_bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
			   arelent *cache_ptr ATTRIBUTE_UNUSED,
			   Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
{
  abort ();
  return false;
}

/* Try to convert a non-ELF reloc into an ELF one.  */

bool
_bfd_elf_validate_reloc (bfd *abfd, arelent *areloc)
{
  /* Check whether we really have an ELF howto.  */

  if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
    {
      bfd_reloc_code_real_type code;
      reloc_howto_type *howto;

      /* Alien reloc: Try to determine its type to replace it with an
	 equivalent ELF reloc.  */

      if (areloc->howto->pc_relative)
	{
	  switch (areloc->howto->bitsize)
	    {
	    case 8:
	      code = BFD_RELOC_8_PCREL;
	      break;
	    case 12:
	      code = BFD_RELOC_12_PCREL;
	      break;
	    case 16:
	      code = BFD_RELOC_16_PCREL;
	      break;
	    case 24:
	      code = BFD_RELOC_24_PCREL;
	      break;
	    case 32:
	      code = BFD_RELOC_32_PCREL;
	      break;
	    case 64:
	      code = BFD_RELOC_64_PCREL;
	      break;
	    default:
	      goto fail;
	    }

	  howto = bfd_reloc_type_lookup (abfd, code);

	  if (howto && areloc->howto->pcrel_offset != howto->pcrel_offset)
	    {
	      if (howto->pcrel_offset)
		areloc->addend += areloc->address;
	      else
		areloc->addend -= areloc->address; /* addend is unsigned!! */
	    }
	}
      else
	{
	  switch (areloc->howto->bitsize)
	    {
	    case 8:
	      code = BFD_RELOC_8;
	      break;
	    case 14:
	      code = BFD_RELOC_14;
	      break;
	    case 16:
	      code = BFD_RELOC_16;
	      break;
	    case 26:
	      code = BFD_RELOC_26;
	      break;
	    case 32:
	      code = BFD_RELOC_32;
	      break;
	    case 64:
	      code = BFD_RELOC_64;
	      break;
	    default:
	      goto fail;
	    }

	  howto = bfd_reloc_type_lookup (abfd, code);
	}

      if (howto)
	areloc->howto = howto;
      else
	goto fail;
    }

  return true;

 fail:
  /* xgettext:c-format */
  _bfd_error_handler (_("%pB: %s unsupported"),
		      abfd, areloc->howto->name);
  bfd_set_error (bfd_error_sorry);
  return false;
}

bool
_bfd_elf_close_and_cleanup (bfd *abfd)
{
  struct elf_obj_tdata *tdata = elf_tdata (abfd);
  if (tdata != NULL
      && (bfd_get_format (abfd) == bfd_object
	  || bfd_get_format (abfd) == bfd_core))
    {
      if (elf_tdata (abfd)->o != NULL && elf_shstrtab (abfd) != NULL)
	_bfd_elf_strtab_free (elf_shstrtab (abfd));
      _bfd_dwarf2_cleanup_debug_info (abfd, &tdata->dwarf2_find_line_info);
      _bfd_dwarf1_cleanup_debug_info (abfd, &tdata->dwarf1_find_line_info);
      _bfd_stab_cleanup (abfd, &tdata->line_info);
    }

  return _bfd_generic_close_and_cleanup (abfd);
}

/* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
   in the relocation's offset.  Thus we cannot allow any sort of sanity
   range-checking to interfere.  There is nothing else to do in processing
   this reloc.  */

bfd_reloc_status_type
_bfd_elf_rel_vtable_reloc_fn
  (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED,
   struct bfd_symbol *symbol ATTRIBUTE_UNUSED,
   void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED,
   bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED)
{
  return bfd_reloc_ok;
}

/* Elf core file support.  Much of this only works on native
   toolchains, since we rely on knowing the
   machine-dependent procfs structure in order to pick
   out details about the corefile.  */

#ifdef HAVE_SYS_PROCFS_H
# include <sys/procfs.h>
#endif

/* Return a PID that identifies a "thread" for threaded cores, or the
   PID of the main process for non-threaded cores.  */

static int
elfcore_make_pid (bfd *abfd)
{
  int pid;

  pid = elf_tdata (abfd)->core->lwpid;
  if (pid == 0)
    pid = elf_tdata (abfd)->core->pid;

  return pid;
}

/* If there isn't a section called NAME, make one, using data from
   SECT.  Note, this function will generate a reference to NAME, so
   you shouldn't deallocate or overwrite it.  */

static bool
elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect)
{
  asection *sect2;

  if (bfd_get_section_by_name (abfd, name) != NULL)
    return true;

  sect2 = bfd_make_section_with_flags (abfd, name, sect->flags);
  if (sect2 == NULL)
    return false;

  sect2->size = sect->size;
  sect2->filepos = sect->filepos;
  sect2->alignment_power = sect->alignment_power;
  return true;
}

/* Create a pseudosection containing SIZE bytes at FILEPOS.  This
   actually creates up to two pseudosections:
   - For the single-threaded case, a section named NAME, unless
     such a section already exists.
   - For the multi-threaded case, a section named "NAME/PID", where
     PID is elfcore_make_pid (abfd).
   Both pseudosections have identical contents.  */
bool
_bfd_elfcore_make_pseudosection (bfd *abfd,
				 char *name,
				 size_t size,
				 ufile_ptr filepos)
{
  char buf[100];
  char *threaded_name;
  size_t len;
  asection *sect;

  /* Build the section name.  */

  sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
  len = strlen (buf) + 1;
  threaded_name = (char *) bfd_alloc (abfd, len);
  if (threaded_name == NULL)
    return false;
  memcpy (threaded_name, buf, len);

  sect = bfd_make_section_anyway_with_flags (abfd, threaded_name,
					     SEC_HAS_CONTENTS);
  if (sect == NULL)
    return false;
  sect->size = size;
  sect->filepos = filepos;
  sect->alignment_power = 2;

  return elfcore_maybe_make_sect (abfd, name, sect);
}

static bool
elfcore_make_auxv_note_section (bfd *abfd, Elf_Internal_Note *note,
				size_t offs)
{
  asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv",
						       SEC_HAS_CONTENTS);

  if (sect == NULL)
    return false;

  sect->size = note->descsz - offs;
  sect->filepos = note->descpos + offs;
  sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;

  return true;
}

/* prstatus_t exists on:
     solaris 2.5+
     linux 2.[01] + glibc
     unixware 4.2
*/

#if defined (HAVE_PRSTATUS_T)

static bool
elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
  size_t size;
  int offset;

  if (note->descsz == sizeof (prstatus_t))
    {
      prstatus_t prstat;

      size = sizeof (prstat.pr_reg);
      offset   = offsetof (prstatus_t, pr_reg);
      memcpy (&prstat, note->descdata, sizeof (prstat));

      /* Do not overwrite the core signal if it
	 has already been set by another thread.  */
      if (elf_tdata (abfd)->core->signal == 0)
	elf_tdata (abfd)->core->signal = prstat.pr_cursig;
      if (elf_tdata (abfd)->core->pid == 0)
	elf_tdata (abfd)->core->pid = prstat.pr_pid;

      /* pr_who exists on:
	 solaris 2.5+
	 unixware 4.2
	 pr_who doesn't exist on:
	 linux 2.[01]
	 */
#if defined (HAVE_PRSTATUS_T_PR_WHO)
      elf_tdata (abfd)->core->lwpid = prstat.pr_who;
#else
      elf_tdata (abfd)->core->lwpid = prstat.pr_pid;
#endif
    }
#if defined (HAVE_PRSTATUS32_T)
  else if (note->descsz == sizeof (prstatus32_t))
    {
      /* 64-bit host, 32-bit corefile */
      prstatus32_t prstat;

      size = sizeof (prstat.pr_reg);
      offset   = offsetof (prstatus32_t, pr_reg);
      memcpy (&prstat, note->descdata, sizeof (prstat));

      /* Do not overwrite the core signal if it
	 has already been set by another thread.  */
      if (elf_tdata (abfd)->core->signal == 0)
	elf_tdata (abfd)->core->signal = prstat.pr_cursig;
      if (elf_tdata (abfd)->core->pid == 0)
	elf_tdata (abfd)->core->pid = prstat.pr_pid;

      /* pr_who exists on:
	 solaris 2.5+
	 unixware 4.2
	 pr_who doesn't exist on:
	 linux 2.[01]
	 */
#if defined (HAVE_PRSTATUS32_T_PR_WHO)
      elf_tdata (abfd)->core->lwpid = prstat.pr_who;
#else
      elf_tdata (abfd)->core->lwpid = prstat.pr_pid;
#endif
    }
#endif /* HAVE_PRSTATUS32_T */
  else
    {
      /* Fail - we don't know how to handle any other
	 note size (ie. data object type).  */
      return true;
    }

  /* Make a ".reg/999" section and a ".reg" section.  */
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
					  size, note->descpos + offset);
}
#endif /* defined (HAVE_PRSTATUS_T) */

/* Create a pseudosection containing the exact contents of NOTE.  */
static bool
elfcore_make_note_pseudosection (bfd *abfd,
				 char *name,
				 Elf_Internal_Note *note)
{
  return _bfd_elfcore_make_pseudosection (abfd, name,
					  note->descsz, note->descpos);
}

/* There isn't a consistent prfpregset_t across platforms,
   but it doesn't matter, because we don't have to pick this
   data structure apart.  */

static bool
elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg2", note);
}

/* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
   type of NT_PRXFPREG.  Just include the whole note's contents
   literally.  */

static bool
elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
}

/* Linux dumps the Intel XSAVE extended state in a note named "LINUX"
   with a note type of NT_X86_XSTATE.  Just include the whole note's
   contents literally.  */

static bool
elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note);
}

static bool
elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note);
}

static bool
elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note);
}

static bool
elfcore_grok_ppc_tar (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tar", note);
}

static bool
elfcore_grok_ppc_ppr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-ppr", note);
}

static bool
elfcore_grok_ppc_dscr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-dscr", note);
}

static bool
elfcore_grok_ppc_ebb (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-ebb", note);
}

static bool
elfcore_grok_ppc_pmu (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-pmu", note);
}

static bool
elfcore_grok_ppc_tm_cgpr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cgpr", note);
}

static bool
elfcore_grok_ppc_tm_cfpr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cfpr", note);
}

static bool
elfcore_grok_ppc_tm_cvmx (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cvmx", note);
}

static bool
elfcore_grok_ppc_tm_cvsx (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cvsx", note);
}

static bool
elfcore_grok_ppc_tm_spr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-spr", note);
}

static bool
elfcore_grok_ppc_tm_ctar (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-ctar", note);
}

static bool
elfcore_grok_ppc_tm_cppr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cppr", note);
}

static bool
elfcore_grok_ppc_tm_cdscr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cdscr", note);
}

static bool
elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note);
}

static bool
elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note);
}

static bool
elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note);
}

static bool
elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note);
}

static bool
elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note);
}

static bool
elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note);
}

static bool
elfcore_grok_s390_last_break (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-last-break", note);
}

static bool
elfcore_grok_s390_system_call (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-system-call", note);
}

static bool
elfcore_grok_s390_tdb (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-tdb", note);
}

static bool
elfcore_grok_s390_vxrs_low (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-vxrs-low", note);
}

static bool
elfcore_grok_s390_vxrs_high (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-vxrs-high", note);
}

static bool
elfcore_grok_s390_gs_cb (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-gs-cb", note);
}

static bool
elfcore_grok_s390_gs_bc (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-s390-gs-bc", note);
}

static bool
elfcore_grok_arm_vfp (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-arm-vfp", note);
}

static bool
elfcore_grok_aarch_tls (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-tls", note);
}

static bool
elfcore_grok_aarch_hw_break (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-break", note);
}

static bool
elfcore_grok_aarch_hw_watch (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-watch", note);
}

static bool
elfcore_grok_aarch_sve (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-sve", note);
}

static bool
elfcore_grok_aarch_pauth (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-pauth", note);
}

static bool
elfcore_grok_aarch_mte (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-aarch-mte",
					  note);
}

static bool
elfcore_grok_arc_v2 (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-arc-v2", note);
}

/* Convert NOTE into a bfd_section called ".reg-riscv-csr".  Return TRUE if
   successful otherwise, return FALSE.  */

static bool
elfcore_grok_riscv_csr (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-riscv-csr", note);
}

/* Convert NOTE into a bfd_section called ".gdb-tdesc".  Return TRUE if
   successful otherwise, return FALSE.  */

static bool
elfcore_grok_gdb_tdesc (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".gdb-tdesc", note);
}

static bool
elfcore_grok_loongarch_cpucfg (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-loongarch-cpucfg", note);
}

static bool
elfcore_grok_loongarch_lbt (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-loongarch-lbt", note);
}

static bool
elfcore_grok_loongarch_lsx (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-loongarch-lsx", note);
}

static bool
elfcore_grok_loongarch_lasx (bfd *abfd, Elf_Internal_Note *note)
{
  return elfcore_make_note_pseudosection (abfd, ".reg-loongarch-lasx", note);
}

#if defined (HAVE_PRPSINFO_T)
typedef prpsinfo_t   elfcore_psinfo_t;
#if defined (HAVE_PRPSINFO32_T)		/* Sparc64 cross Sparc32 */
typedef prpsinfo32_t elfcore_psinfo32_t;
#endif
#endif

#if defined (HAVE_PSINFO_T)
typedef psinfo_t   elfcore_psinfo_t;
#if defined (HAVE_PSINFO32_T)		/* Sparc64 cross Sparc32 */
typedef psinfo32_t elfcore_psinfo32_t;
#endif
#endif

/* return a malloc'ed copy of a string at START which is at
   most MAX bytes long, possibly without a terminating '\0'.
   the copy will always have a terminating '\0'.  */

char *
_bfd_elfcore_strndup (bfd *abfd, char *start, size_t max)
{
  char *dups;
  char *end = (char *) memchr (start, '\0', max);
  size_t len;

  if (end == NULL)
    len = max;
  else
    len = end - start;

  dups = (char *) bfd_alloc (abfd, len + 1);
  if (dups == NULL)
    return NULL;

  memcpy (dups, start, len);
  dups[len] = '\0';

  return dups;
}

#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
static bool
elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
  if (note->descsz == sizeof (elfcore_psinfo_t))
    {
      elfcore_psinfo_t psinfo;

      memcpy (&psinfo, note->descdata, sizeof (psinfo));

#if defined (HAVE_PSINFO_T_PR_PID) || defined (HAVE_PRPSINFO_T_PR_PID)
      elf_tdata (abfd)->core->pid = psinfo.pr_pid;
#endif
      elf_tdata (abfd)->core->program
	= _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
				sizeof (psinfo.pr_fname));

      elf_tdata (abfd)->core->command
	= _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
				sizeof (psinfo.pr_psargs));
    }
#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
  else if (note->descsz == sizeof (elfcore_psinfo32_t))
    {
      /* 64-bit host, 32-bit corefile */
      elfcore_psinfo32_t psinfo;

      memcpy (&psinfo, note->descdata, sizeof (psinfo));

#if defined (HAVE_PSINFO32_T_PR_PID) || defined (HAVE_PRPSINFO32_T_PR_PID)
      elf_tdata (abfd)->core->pid = psinfo.pr_pid;
#endif
      elf_tdata (abfd)->core->program
	= _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
				sizeof (psinfo.pr_fname));

      elf_tdata (abfd)->core->command
	= _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
				sizeof (psinfo.pr_psargs));
    }
#endif

  else
    {
      /* Fail - we don't know how to handle any other
	 note size (ie. data object type).  */
      return true;
    }

  /* Note that for some reason, a spurious space is tacked
     onto the end of the args in some (at least one anyway)
     implementations, so strip it off if it exists.  */

  {
    char *command = elf_tdata (abfd)->core->command;
    int n = strlen (command);

    if (0 < n && command[n - 1] == ' ')
      command[n - 1] = '\0';
  }

  return true;
}
#endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */

#if defined (HAVE_PSTATUS_T)
static bool
elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note)
{
  if (note->descsz == sizeof (pstatus_t)
#if defined (HAVE_PXSTATUS_T)
      || note->descsz == sizeof (pxstatus_t)
#endif
      )
    {
      pstatus_t pstat;

      memcpy (&pstat, note->descdata, sizeof (pstat));

      elf_tdata (abfd)->core->pid = pstat.pr_pid;
    }
#if defined (HAVE_PSTATUS32_T)
  else if (note->descsz == sizeof (pstatus32_t))
    {
      /* 64-bit host, 32-bit corefile */
      pstatus32_t pstat;

      memcpy (&pstat, note->descdata, sizeof (pstat));

      elf_tdata (abfd)->core->pid = pstat.pr_pid;
    }
#endif
  /* Could grab some more details from the "representative"
     lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
     NT_LWPSTATUS note, presumably.  */

  return true;
}
#endif /* defined (HAVE_PSTATUS_T) */

#if defined (HAVE_LWPSTATUS_T)
static bool
elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note)
{
  lwpstatus_t lwpstat;
  char buf[100];
  char *name;
  size_t len;
  asection *sect;

  if (note->descsz != sizeof (lwpstat)
#if defined (HAVE_LWPXSTATUS_T)
      && note->descsz != sizeof (lwpxstatus_t)
#endif
      )
    return true;

  memcpy (&lwpstat, note->descdata, sizeof (lwpstat));

  elf_tdata (abfd)->core->lwpid = lwpstat.pr_lwpid;
  /* Do not overwrite the core signal if it has already been set by
     another thread.  */
  if (elf_tdata (abfd)->core->signal == 0)
    elf_tdata (abfd)->core->signal = lwpstat.pr_cursig;

  /* Make a ".reg/999" section.  */

  sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
  len = strlen (buf) + 1;
  name = bfd_alloc (abfd, len);
  if (name == NULL)
    return false;
  memcpy (name, buf, len);

  sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
  if (sect == NULL)
    return false;

#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
  sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
  sect->filepos = note->descpos
    + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
#endif

#if defined (HAVE_LWPSTATUS_T_PR_REG)
  sect->size = sizeof (lwpstat.pr_reg);
  sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
#endif

  sect->alignment_power = 2;

  if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
    return false;

  /* Make a ".reg2/999" section */

  sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
  len = strlen (buf) + 1;
  name = bfd_alloc (abfd, len);
  if (name == NULL)
    return false;
  memcpy (name, buf, len);

  sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
  if (sect == NULL)
    return false;

#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
  sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
  sect->filepos = note->descpos
    + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
#endif

#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
  sect->size = sizeof (lwpstat.pr_fpreg);
  sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
#endif

  sect->alignment_power = 2;

  return elfcore_maybe_make_sect (abfd, ".reg2", sect);
}
#endif /* defined (HAVE_LWPSTATUS_T) */

/* These constants, and the structure offsets used below, are defined by
   Cygwin's core_dump.h */
#define NOTE_INFO_PROCESS  1
#define NOTE_INFO_THREAD   2
#define NOTE_INFO_MODULE   3
#define NOTE_INFO_MODULE64 4

static bool
elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note)
{
  char buf[30];
  char *name;
  size_t len;
  unsigned int name_size;
  asection *sect;
  unsigned int type;
  int is_active_thread;
  bfd_vma base_addr;

  if (note->descsz < 4)
    return true;

  if (! startswith (note->namedata, "win32"))
    return true;

  type = bfd_get_32 (abfd, note->descdata);

  struct
  {
    const char *type_name;
    unsigned long min_size;
  } size_check[] =
      {
       { "NOTE_INFO_PROCESS", 12 },
       { "NOTE_INFO_THREAD", 12 },
       { "NOTE_INFO_MODULE", 12 },
       { "NOTE_INFO_MODULE64", 16 },
      };

  if (type == 0 || type > (sizeof(size_check)/sizeof(size_check[0])))
      return true;

  if (note->descsz < size_check[type - 1].min_size)
    {
      _bfd_error_handler (_("%pB: warning: win32pstatus %s of size %lu bytes"
			    " is too small"),
			  abfd, size_check[type - 1].type_name, note->descsz);
      return true;
    }

  switch (type)
    {
    case NOTE_INFO_PROCESS:
      /* FIXME: need to add ->core->command.  */
      elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 4);
      elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 8);
      break;

    case NOTE_INFO_THREAD:
      /* Make a ".reg/<tid>" section containing the Win32 API thread CONTEXT
	 structure. */
      /* thread_info.tid */
      sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 4));

      len = strlen (buf) + 1;
      name = (char *) bfd_alloc (abfd, len);
      if (name == NULL)
	return false;

      memcpy (name, buf, len);

      sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
      if (sect == NULL)
	return false;

      /* sizeof (thread_info.thread_context) */
      sect->size = note->descsz - 12;
      /* offsetof (thread_info.thread_context) */
      sect->filepos = note->descpos + 12;
      sect->alignment_power = 2;

      /* thread_info.is_active_thread */
      is_active_thread = bfd_get_32 (abfd, note->descdata + 8);

      if (is_active_thread)
	if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
	  return false;
      break;

    case NOTE_INFO_MODULE:
    case NOTE_INFO_MODULE64:
      /* Make a ".module/xxxxxxxx" section.  */
      if (type == NOTE_INFO_MODULE)
	{
	  /* module_info.base_address */
	  base_addr = bfd_get_32 (abfd, note->descdata + 4);
	  sprintf (buf, ".module/%08lx", (unsigned long) base_addr);
	  /* module_info.module_name_size */
	  name_size = bfd_get_32 (abfd, note->descdata + 8);
	}
      else /* NOTE_INFO_MODULE64 */
	{
	  /* module_info.base_address */
	  base_addr = bfd_get_64 (abfd, note->descdata + 4);
	  sprintf (buf, ".module/%016lx", (unsigned long) base_addr);
	  /* module_info.module_name_size */
	  name_size = bfd_get_32 (abfd, note->descdata + 12);
	}

      len = strlen (buf) + 1;
      name = (char *) bfd_alloc (abfd, len);
      if (name == NULL)
	return false;

      memcpy (name, buf, len);

      sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);

      if (sect == NULL)
	return false;

      if (note->descsz < 12 + name_size)
	{
	  _bfd_error_handler (_("%pB: win32pstatus NOTE_INFO_MODULE of size %lu"
				" is too small to contain a name of size %u"),
			      abfd, note->descsz, name_size);
	  return true;
	}

      sect->size = note->descsz;
      sect->filepos = note->descpos;
      sect->alignment_power = 2;
      break;

    default:
      return true;
    }

  return true;
}

static bool
elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  switch (note->type)
    {
    default:
      return true;

    case NT_PRSTATUS:
      if (bed->elf_backend_grok_prstatus)
	if ((*bed->elf_backend_grok_prstatus) (abfd, note))
	  return true;
#if defined (HAVE_PRSTATUS_T)
      return elfcore_grok_prstatus (abfd, note);
#else
      return true;
#endif

#if defined (HAVE_PSTATUS_T)
    case NT_PSTATUS:
      return elfcore_grok_pstatus (abfd, note);
#endif

#if defined (HAVE_LWPSTATUS_T)
    case NT_LWPSTATUS:
      return elfcore_grok_lwpstatus (abfd, note);
#endif

    case NT_FPREGSET:		/* FIXME: rename to NT_PRFPREG */
      return elfcore_grok_prfpreg (abfd, note);

    case NT_WIN32PSTATUS:
      return elfcore_grok_win32pstatus (abfd, note);

    case NT_PRXFPREG:		/* Linux SSE extension */
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_prxfpreg (abfd, note);
      else
	return true;

    case NT_X86_XSTATE:		/* Linux XSAVE extension */
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_xstatereg (abfd, note);
      else
	return true;

    case NT_PPC_VMX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_vmx (abfd, note);
      else
	return true;

    case NT_PPC_VSX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_vsx (abfd, note);
      else
	return true;

    case NT_PPC_TAR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tar (abfd, note);
      else
	return true;

    case NT_PPC_PPR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_ppr (abfd, note);
      else
	return true;

    case NT_PPC_DSCR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_dscr (abfd, note);
      else
	return true;

    case NT_PPC_EBB:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_ebb (abfd, note);
      else
	return true;

    case NT_PPC_PMU:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_pmu (abfd, note);
      else
	return true;

    case NT_PPC_TM_CGPR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_cgpr (abfd, note);
      else
	return true;

    case NT_PPC_TM_CFPR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_cfpr (abfd, note);
      else
	return true;

    case NT_PPC_TM_CVMX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_cvmx (abfd, note);
      else
	return true;

    case NT_PPC_TM_CVSX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_cvsx (abfd, note);
      else
	return true;

    case NT_PPC_TM_SPR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_spr (abfd, note);
      else
	return true;

    case NT_PPC_TM_CTAR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_ctar (abfd, note);
      else
	return true;

    case NT_PPC_TM_CPPR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_cppr (abfd, note);
      else
	return true;

    case NT_PPC_TM_CDSCR:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_ppc_tm_cdscr (abfd, note);
      else
	return true;

    case NT_S390_HIGH_GPRS:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_high_gprs (abfd, note);
      else
	return true;

    case NT_S390_TIMER:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_timer (abfd, note);
      else
	return true;

    case NT_S390_TODCMP:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_todcmp (abfd, note);
      else
	return true;

    case NT_S390_TODPREG:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_todpreg (abfd, note);
      else
	return true;

    case NT_S390_CTRS:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_ctrs (abfd, note);
      else
	return true;

    case NT_S390_PREFIX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_prefix (abfd, note);
      else
	return true;

    case NT_S390_LAST_BREAK:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_last_break (abfd, note);
      else
	return true;

    case NT_S390_SYSTEM_CALL:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_system_call (abfd, note);
      else
	return true;

    case NT_S390_TDB:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_tdb (abfd, note);
      else
	return true;

    case NT_S390_VXRS_LOW:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_vxrs_low (abfd, note);
      else
	return true;

    case NT_S390_VXRS_HIGH:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_vxrs_high (abfd, note);
      else
	return true;

    case NT_S390_GS_CB:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_gs_cb (abfd, note);
      else
	return true;

    case NT_S390_GS_BC:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_s390_gs_bc (abfd, note);
      else
	return true;

    case NT_ARC_V2:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_arc_v2 (abfd, note);
      else
	return true;

    case NT_ARM_VFP:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_arm_vfp (abfd, note);
      else
	return true;

    case NT_ARM_TLS:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_aarch_tls (abfd, note);
      else
	return true;

    case NT_ARM_HW_BREAK:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_aarch_hw_break (abfd, note);
      else
	return true;

    case NT_ARM_HW_WATCH:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_aarch_hw_watch (abfd, note);
      else
	return true;

    case NT_ARM_SVE:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_aarch_sve (abfd, note);
      else
	return true;

    case NT_ARM_PAC_MASK:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_aarch_pauth (abfd, note);
      else
	return true;

    case NT_ARM_TAGGED_ADDR_CTRL:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_aarch_mte (abfd, note);
      else
	return true;

    case NT_GDB_TDESC:
      if (note->namesz == 4
	  && strcmp (note->namedata, "GDB") == 0)
	return elfcore_grok_gdb_tdesc (abfd, note);
      else
	return true;

    case NT_RISCV_CSR:
      if (note->namesz == 4
	  && strcmp (note->namedata, "GDB") == 0)
	return elfcore_grok_riscv_csr (abfd, note);
      else
	return true;

    case NT_LARCH_CPUCFG:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_loongarch_cpucfg (abfd, note);
      else
	return true;

    case NT_LARCH_LBT:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_loongarch_lbt (abfd, note);
      else
	return true;

    case NT_LARCH_LSX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_loongarch_lsx (abfd, note);
      else
	return true;

    case NT_LARCH_LASX:
      if (note->namesz == 6
	  && strcmp (note->namedata, "LINUX") == 0)
	return elfcore_grok_loongarch_lasx (abfd, note);
      else
	return true;

    case NT_PRPSINFO:
    case NT_PSINFO:
      if (bed->elf_backend_grok_psinfo)
	if ((*bed->elf_backend_grok_psinfo) (abfd, note))
	  return true;
#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
      return elfcore_grok_psinfo (abfd, note);
#else
      return true;
#endif

    case NT_AUXV:
      return elfcore_make_auxv_note_section (abfd, note, 0);

    case NT_FILE:
      return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.file",
					      note);

    case NT_SIGINFO:
      return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.siginfo",
					      note);

    }
}

static bool
elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note)
{
  struct bfd_build_id* build_id;

  if (note->descsz == 0)
    return false;

  build_id = bfd_alloc (abfd, sizeof (struct bfd_build_id) - 1 + note->descsz);
  if (build_id == NULL)
    return false;

  build_id->size = note->descsz;
  memcpy (build_id->data, note->descdata, note->descsz);
  abfd->build_id = build_id;

  return true;
}

static bool
elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note)
{
  switch (note->type)
    {
    default:
      return true;

    case NT_GNU_PROPERTY_TYPE_0:
      return _bfd_elf_parse_gnu_properties (abfd, note);

    case NT_GNU_BUILD_ID:
      return elfobj_grok_gnu_build_id (abfd, note);
    }
}

static bool
elfobj_grok_stapsdt_note_1 (bfd *abfd, Elf_Internal_Note *note)
{
  struct sdt_note *cur =
    (struct sdt_note *) bfd_alloc (abfd,
				   sizeof (struct sdt_note) + note->descsz);

  cur->next = (struct sdt_note *) (elf_tdata (abfd))->sdt_note_head;
  cur->size = (bfd_size_type) note->descsz;
  memcpy (cur->data, note->descdata, note->descsz);

  elf_tdata (abfd)->sdt_note_head = cur;

  return true;
}

static bool
elfobj_grok_stapsdt_note (bfd *abfd, Elf_Internal_Note *note)
{
  switch (note->type)
    {
    case NT_STAPSDT:
      return elfobj_grok_stapsdt_note_1 (abfd, note);

    default:
      return true;
    }
}

static bool
elfcore_grok_freebsd_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
  size_t offset;

  switch (elf_elfheader (abfd)->e_ident[EI_CLASS])
    {
    case ELFCLASS32:
      if (note->descsz < 108)
	return false;
      break;

    case ELFCLASS64:
      if (note->descsz < 120)
	return false;
      break;

    default:
      return false;
    }

  /* Check for version 1 in pr_version.  */
  if (bfd_h_get_32 (abfd, (bfd_byte *) note->descdata) != 1)
    return false;

  offset = 4;

  /* Skip over pr_psinfosz. */
  if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS32)
    offset += 4;
  else
    {
      offset += 4;	/* Padding before pr_psinfosz. */
      offset += 8;
    }

  /* pr_fname is PRFNAMESZ (16) + 1 bytes in size.  */
  elf_tdata (abfd)->core->program
    = _bfd_elfcore_strndup (abfd, note->descdata + offset, 17);
  offset += 17;

  /* pr_psargs is PRARGSZ (80) + 1 bytes in size.  */
  elf_tdata (abfd)->core->command
    = _bfd_elfcore_strndup (abfd, note->descdata + offset, 81);
  offset += 81;

  /* Padding before pr_pid.  */
  offset += 2;

  /* The pr_pid field was added in version "1a".  */
  if (note->descsz < offset + 4)
    return true;

  elf_tdata (abfd)->core->pid
    = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset);

  return true;
}

static bool
elfcore_grok_freebsd_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
  size_t offset;
  size_t size;
  size_t min_size;

  /* Compute offset of pr_getregsz, skipping over pr_statussz.
     Also compute minimum size of this note.  */
  switch (elf_elfheader (abfd)->e_ident[EI_CLASS])
    {
    case ELFCLASS32:
      offset = 4 + 4;
      min_size = offset + (4 * 2) + 4 + 4 + 4;
      break;

    case ELFCLASS64:
      offset = 4 + 4 + 8;	/* Includes padding before pr_statussz.  */
      min_size = offset + (8 * 2) + 4 + 4 + 4 + 4;
      break;

    default:
      return false;
    }

  if (note->descsz < min_size)
    return false;

  /* Check for version 1 in pr_version.  */
  if (bfd_h_get_32 (abfd, (bfd_byte *) note->descdata) != 1)
    return false;

  /* Extract size of pr_reg from pr_gregsetsz.  */
  /* Skip over pr_gregsetsz and pr_fpregsetsz.  */
  if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS32)
    {
      size = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset);
      offset += 4 * 2;
    }
  else
    {
      size = bfd_h_get_64 (abfd, (bfd_byte *) note->descdata + offset);
      offset += 8 * 2;
    }

  /* Skip over pr_osreldate.  */
  offset += 4;

  /* Read signal from pr_cursig.  */
  if (elf_tdata (abfd)->core->signal == 0)
    elf_tdata (abfd)->core->signal
      = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset);
  offset += 4;

  /* Read TID from pr_pid.  */
  elf_tdata (abfd)->core->lwpid
      = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset);
  offset += 4;

  /* Padding before pr_reg.  */
  if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64)
    offset += 4;

  /* Make sure that there is enough data remaining in the note.  */
  if ((note->descsz - offset) < size)
    return false;

  /* Make a ".reg/999" section and a ".reg" section.  */
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
					  size, note->descpos + offset);
}

static bool
elfcore_grok_freebsd_note (bfd *abfd, Elf_Internal_Note *note)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  switch (note->type)
    {
    case NT_PRSTATUS:
      if (bed->elf_backend_grok_freebsd_prstatus)
	if ((*bed->elf_backend_grok_freebsd_prstatus) (abfd, note))
	  return true;
      return elfcore_grok_freebsd_prstatus (abfd, note);

    case NT_FPREGSET:
      return elfcore_grok_prfpreg (abfd, note);

    case NT_PRPSINFO:
      return elfcore_grok_freebsd_psinfo (abfd, note);

    case NT_FREEBSD_THRMISC:
      return elfcore_make_note_pseudosection (abfd, ".thrmisc", note);

    case NT_FREEBSD_PROCSTAT_PROC:
      return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.proc",
					      note);

    case NT_FREEBSD_PROCSTAT_FILES:
      return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.files",
					      note);

    case NT_FREEBSD_PROCSTAT_VMMAP:
      return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.vmmap",
					      note);

    case NT_FREEBSD_PROCSTAT_AUXV:
      return elfcore_make_auxv_note_section (abfd, note, 4);

    case NT_FREEBSD_X86_SEGBASES:
      return elfcore_make_note_pseudosection (abfd, ".reg-x86-segbases", note);

    case NT_X86_XSTATE:
      return elfcore_grok_xstatereg (abfd, note);

    case NT_FREEBSD_PTLWPINFO:
      return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.lwpinfo",
					      note);

    case NT_ARM_TLS:
      return elfcore_grok_aarch_tls (abfd, note);

    case NT_ARM_VFP:
      return elfcore_grok_arm_vfp (abfd, note);

    default:
      return true;
    }
}

static bool
elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp)
{
  char *cp;

  cp = strchr (note->namedata, '@');
  if (cp != NULL)
    {
      *lwpidp = atoi(cp + 1);
      return true;
    }
  return false;
}

static bool
elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
{
  if (note->descsz <= 0x7c + 31)
    return false;

  /* Signal number at offset 0x08. */
  elf_tdata (abfd)->core->signal
    = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);

  /* Process ID at offset 0x50. */
  elf_tdata (abfd)->core->pid
    = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);

  /* Command name at 0x7c (max 32 bytes, including nul). */
  elf_tdata (abfd)->core->command
    = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);

  return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo",
					  note);
}

static bool
elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note)
{
  int lwp;

  if (elfcore_netbsd_get_lwpid (note, &lwp))
    elf_tdata (abfd)->core->lwpid = lwp;

  switch (note->type)
    {
    case NT_NETBSDCORE_PROCINFO:
      /* NetBSD-specific core "procinfo".  Note that we expect to
	 find this note before any of the others, which is fine,
	 since the kernel writes this note out first when it
	 creates a core file.  */
      return elfcore_grok_netbsd_procinfo (abfd, note);
    case NT_NETBSDCORE_AUXV:
      /* NetBSD-specific Elf Auxiliary Vector data. */
      return elfcore_make_auxv_note_section (abfd, note, 4);
    case NT_NETBSDCORE_LWPSTATUS:
      return elfcore_make_note_pseudosection (abfd,
					      ".note.netbsdcore.lwpstatus",
					      note);
    default:
      break;
    }

  /* As of March 2020 there are no other machine-independent notes
     defined for NetBSD core files.  If the note type is less
     than the start of the machine-dependent note types, we don't
     understand it.  */

  if (note->type < NT_NETBSDCORE_FIRSTMACH)
    return true;


  switch (bfd_get_arch (abfd))
    {
      /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
	 PT_GETFPREGS == mach+2.  */

    case bfd_arch_aarch64:
    case bfd_arch_alpha:
    case bfd_arch_sparc:
      switch (note->type)
	{
	case NT_NETBSDCORE_FIRSTMACH+0:
	  return elfcore_make_note_pseudosection (abfd, ".reg", note);

	case NT_NETBSDCORE_FIRSTMACH+2:
	  return elfcore_make_note_pseudosection (abfd, ".reg2", note);

	default:
	  return true;
	}

      /* On SuperH, PT_GETREGS == mach+3 and PT_GETFPREGS == mach+5.
	 There's also old PT___GETREGS40 == mach + 1 for old reg
	 structure which lacks GBR.  */

    case bfd_arch_sh:
      switch (note->type)
	{
	case NT_NETBSDCORE_FIRSTMACH+3:
	  return elfcore_make_note_pseudosection (abfd, ".reg", note);

	case NT_NETBSDCORE_FIRSTMACH+5:
	  return elfcore_make_note_pseudosection (abfd, ".reg2", note);

	default:
	  return true;
	}

      /* On all other arch's, PT_GETREGS == mach+1 and
	 PT_GETFPREGS == mach+3.  */

    default:
      switch (note->type)
	{
	case NT_NETBSDCORE_FIRSTMACH+1:
	  return elfcore_make_note_pseudosection (abfd, ".reg", note);

	case NT_NETBSDCORE_FIRSTMACH+3:
	  return elfcore_make_note_pseudosection (abfd, ".reg2", note);

	default:
	  return true;
	}
    }
    /* NOTREACHED */
}

static bool
elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
{
  if (note->descsz <= 0x48 + 31)
    return false;

  /* Signal number at offset 0x08. */
  elf_tdata (abfd)->core->signal
    = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);

  /* Process ID at offset 0x20. */
  elf_tdata (abfd)->core->pid
    = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20);

  /* Command name at 0x48 (max 32 bytes, including nul). */
  elf_tdata (abfd)->core->command
    = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31);

  return true;
}

/* Processes Solaris's process status note.
   sig_off ~ offsetof(prstatus_t, pr_cursig)
   pid_off ~ offsetof(prstatus_t, pr_pid)
   lwpid_off ~ offsetof(prstatus_t, pr_who)
   gregset_size ~ sizeof(gregset_t)
   gregset_offset ~ offsetof(prstatus_t, pr_reg)  */

static bool
elfcore_grok_solaris_prstatus (bfd *abfd, Elf_Internal_Note* note, int sig_off,
			       int pid_off, int lwpid_off, size_t gregset_size,
			       size_t gregset_offset)
{
  asection *sect = NULL;
  elf_tdata (abfd)->core->signal
    = bfd_get_16 (abfd, note->descdata + sig_off);
  elf_tdata (abfd)->core->pid
    = bfd_get_32 (abfd, note->descdata + pid_off);
  elf_tdata (abfd)->core->lwpid
    = bfd_get_32 (abfd, note->descdata + lwpid_off);

  sect = bfd_get_section_by_name (abfd, ".reg");
  if (sect != NULL)
    sect->size = gregset_size;

  return _bfd_elfcore_make_pseudosection (abfd, ".reg", gregset_size,
					  note->descpos + gregset_offset);
}

/* Gets program and arguments from a core.
   prog_off ~ offsetof(prpsinfo | psinfo_t, pr_fname)
   comm_off ~ offsetof(prpsinfo | psinfo_t, pr_psargs)  */

static bool
elfcore_grok_solaris_info(bfd *abfd, Elf_Internal_Note* note,
			  int prog_off, int comm_off)
{
  elf_tdata (abfd)->core->program
    = _bfd_elfcore_strndup (abfd, note->descdata + prog_off, 16);
  elf_tdata (abfd)->core->command
    = _bfd_elfcore_strndup (abfd, note->descdata + comm_off, 80);

  return true;
}

/* Processes Solaris's LWP status note.
   gregset_size ~ sizeof(gregset_t)
   gregset_off ~ offsetof(lwpstatus_t, pr_reg)
   fpregset_size ~ sizeof(fpregset_t)
   fpregset_off ~ offsetof(lwpstatus_t, pr_fpreg)  */

static bool
elfcore_grok_solaris_lwpstatus (bfd *abfd, Elf_Internal_Note* note,
				size_t gregset_size, int gregset_off,
				size_t fpregset_size, int fpregset_off)
{
  asection *sect = NULL;
  char reg2_section_name[16] = { 0 };

  (void) snprintf (reg2_section_name, 16, "%s/%i", ".reg2",
		   elf_tdata (abfd)->core->lwpid);

  /* offsetof(lwpstatus_t, pr_lwpid) */
  elf_tdata (abfd)->core->lwpid
    = bfd_get_32 (abfd, note->descdata + 4);
  /* offsetof(lwpstatus_t, pr_cursig) */
  elf_tdata (abfd)->core->signal
    = bfd_get_16 (abfd, note->descdata + 12);

  sect = bfd_get_section_by_name (abfd, ".reg");
  if (sect != NULL)
    sect->size = gregset_size;
  else if (!_bfd_elfcore_make_pseudosection (abfd, ".reg", gregset_size,
					     note->descpos + gregset_off))
    return false;

  sect = bfd_get_section_by_name (abfd, reg2_section_name);
  if (sect != NULL)
    {
      sect->size = fpregset_size;
      sect->filepos = note->descpos + fpregset_off;
      sect->alignment_power = 2;
    }
  else if (!_bfd_elfcore_make_pseudosection (abfd, ".reg2", fpregset_size,
					     note->descpos + fpregset_off))
    return false;

  return true;
}

static bool
elfcore_grok_solaris_note_impl (bfd *abfd, Elf_Internal_Note *note)
{
  if (note == NULL)
    return false;

  /* core files are identified as 32- or 64-bit, SPARC or x86,
     by the size of the descsz which matches the sizeof()
     the type appropriate for that note type (e.g., prstatus_t for
     SOLARIS_NT_PRSTATUS) for the corresponding architecture
     on Solaris. The core file bitness may differ from the bitness of
     gdb itself, so fixed values are used instead of sizeof().
     Appropriate fixed offsets are also used to obtain data from
     the note.  */

  switch ((int) note->type)
    {
    case SOLARIS_NT_PRSTATUS:
      switch (note->descsz)
	{
	case 508: /* sizeof(prstatus_t) SPARC 32-bit */
	  return elfcore_grok_solaris_prstatus(abfd, note,
					       136, 216, 308, 152, 356);
	case 904: /* sizeof(prstatus_t) SPARC 64-bit */
	  return elfcore_grok_solaris_prstatus(abfd, note,
					       264, 360, 520, 304, 600);
	case 432: /* sizeof(prstatus_t) Intel 32-bit */
	  return elfcore_grok_solaris_prstatus(abfd, note,
					       136, 216, 308, 76, 356);
	case 824: /* sizeof(prstatus_t) Intel 64-bit */
	  return elfcore_grok_solaris_prstatus(abfd, note,
					       264, 360, 520, 224, 600);
	default:
	  return true;
	}

    case SOLARIS_NT_PSINFO:
    case SOLARIS_NT_PRPSINFO:
      switch (note->descsz)
	{
	case 260: /* sizeof(prpsinfo_t) SPARC and Intel 32-bit */
	  return elfcore_grok_solaris_info(abfd, note, 84, 100);
	case 328: /* sizeof(prpsinfo_t) SPARC and Intel 64-bit */
	  return elfcore_grok_solaris_info(abfd, note, 120, 136);
	case 360: /* sizeof(psinfo_t) SPARC and Intel 32-bit */
	  return elfcore_grok_solaris_info(abfd, note, 88, 104);
	case 440: /* sizeof(psinfo_t) SPARC and Intel 64-bit */
	  return elfcore_grok_solaris_info(abfd, note, 136, 152);
	default:
	  return true;
	}

    case SOLARIS_NT_LWPSTATUS:
      switch (note->descsz)
	{
	case 896: /* sizeof(lwpstatus_t) SPARC 32-bit */
	  return elfcore_grok_solaris_lwpstatus(abfd, note,
						152, 344, 400, 496);
	case 1392: /* sizeof(lwpstatus_t) SPARC 64-bit */
	  return elfcore_grok_solaris_lwpstatus(abfd, note,
						304, 544, 544, 848);
	case 800: /* sizeof(lwpstatus_t) Intel 32-bit */
	  return elfcore_grok_solaris_lwpstatus(abfd, note,
						76, 344, 380, 420);
	case 1296: /* sizeof(lwpstatus_t) Intel 64-bit */
	  return elfcore_grok_solaris_lwpstatus(abfd, note,
						224, 544, 528, 768);
	default:
	  return true;
	}

    case SOLARIS_NT_LWPSINFO:
      /* sizeof(lwpsinfo_t) on 32- and 64-bit, respectively */
      if (note->descsz == 128 || note->descsz == 152)
	elf_tdata (abfd)->core->lwpid =
	  bfd_get_32 (abfd, note->descdata + 4);
      break;

    default:
      break;
    }

  return true;
}

/* For name starting with "CORE" this may be either a Solaris
   core file or a gdb-generated core file.  Do Solaris-specific
   processing on selected note types first with
   elfcore_grok_solaris_note(), then process the note
   in elfcore_grok_note().  */

static bool
elfcore_grok_solaris_note (bfd *abfd, Elf_Internal_Note *note)
{
  if (!elfcore_grok_solaris_note_impl (abfd, note))
    return false;

  return elfcore_grok_note (abfd, note);
}

static bool
elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note)
{
  if (note->type == NT_OPENBSD_PROCINFO)
    return elfcore_grok_openbsd_procinfo (abfd, note);

  if (note->type == NT_OPENBSD_REGS)
    return elfcore_make_note_pseudosection (abfd, ".reg", note);

  if (note->type == NT_OPENBSD_FPREGS)
    return elfcore_make_note_pseudosection (abfd, ".reg2", note);

  if (note->type == NT_OPENBSD_XFPREGS)
    return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);

  if (note->type == NT_OPENBSD_AUXV)
    return elfcore_make_auxv_note_section (abfd, note, 0);

  if (note->type == NT_OPENBSD_WCOOKIE)
    {
      asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie",
							   SEC_HAS_CONTENTS);

      if (sect == NULL)
	return false;
      sect->size = note->descsz;
      sect->filepos = note->descpos;
      sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;

      return true;
    }

  return true;
}

static bool
elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid)
{
  void *ddata = note->descdata;
  char buf[100];
  char *name;
  asection *sect;
  short sig;
  unsigned flags;

  if (note->descsz < 16)
    return false;

  /* nto_procfs_status 'pid' field is at offset 0.  */
  elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, (bfd_byte *) ddata);

  /* nto_procfs_status 'tid' field is at offset 4.  Pass it back.  */
  *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4);

  /* nto_procfs_status 'flags' field is at offset 8.  */
  flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8);

  /* nto_procfs_status 'what' field is at offset 14.  */
  if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0)
    {
      elf_tdata (abfd)->core->signal = sig;
      elf_tdata (abfd)->core->lwpid = *tid;
    }

  /* _DEBUG_FLAG_CURTID (current thread) is 0x80.  Some cores
     do not come from signals so we make sure we set the current
     thread just in case.  */
  if (flags & 0x00000080)
    elf_tdata (abfd)->core->lwpid = *tid;

  /* Make a ".qnx_core_status/%d" section.  */
  sprintf (buf, ".qnx_core_status/%ld", *tid);

  name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
  if (name == NULL)
    return false;
  strcpy (name, buf);

  sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
  if (sect == NULL)
    return false;

  sect->size		= note->descsz;
  sect->filepos		= note->descpos;
  sect->alignment_power = 2;

  return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect));
}

static bool
elfcore_grok_nto_regs (bfd *abfd,
		       Elf_Internal_Note *note,
		       long tid,
		       char *base)
{
  char buf[100];
  char *name;
  asection *sect;

  /* Make a "(base)/%d" section.  */
  sprintf (buf, "%s/%ld", base, tid);

  name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
  if (name == NULL)
    return false;
  strcpy (name, buf);

  sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
  if (sect == NULL)
    return false;

  sect->size		= note->descsz;
  sect->filepos		= note->descpos;
  sect->alignment_power = 2;

  /* This is the current thread.  */
  if (elf_tdata (abfd)->core->lwpid == tid)
    return elfcore_maybe_make_sect (abfd, base, sect);

  return true;
}

static bool
elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note)
{
  /* Every GREG section has a STATUS section before it.  Store the
     tid from the previous call to pass down to the next gregs
     function.  */
  static long tid = 1;

  switch (note->type)
    {
    case QNT_CORE_INFO:
      return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
    case QNT_CORE_STATUS:
      return elfcore_grok_nto_status (abfd, note, &tid);
    case QNT_CORE_GREG:
      return elfcore_grok_nto_regs (abfd, note, tid, ".reg");
    case QNT_CORE_FPREG:
      return elfcore_grok_nto_regs (abfd, note, tid, ".reg2");
    default:
      return true;
    }
}

static bool
elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note)
{
  char *name;
  asection *sect;
  size_t len;

  /* Use note name as section name.  */
  len = note->namesz;
  name = (char *) bfd_alloc (abfd, len);
  if (name == NULL)
    return false;
  memcpy (name, note->namedata, len);
  name[len - 1] = '\0';

  sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
  if (sect == NULL)
    return false;

  sect->size		= note->descsz;
  sect->filepos		= note->descpos;
  sect->alignment_power = 1;

  return true;
}

/* Function: elfcore_write_note

   Inputs:
     buffer to hold note, and current size of buffer
     name of note
     type of note
     data for note
     size of data for note

   Writes note to end of buffer.  ELF64 notes are written exactly as
   for ELF32, despite the current (as of 2006) ELF gabi specifying
   that they ought to have 8-byte namesz and descsz field, and have
   8-byte alignment.  Other writers, eg. Linux kernel, do the same.

   Return:
   Pointer to realloc'd buffer, *BUFSIZ updated.  */

char *
elfcore_write_note (bfd *abfd,
		    char *buf,
		    int *bufsiz,
		    const char *name,
		    int type,
		    const void *input,
		    int size)
{
  Elf_External_Note *xnp;
  size_t namesz;
  size_t newspace;
  char *dest;

  namesz = 0;
  if (name != NULL)
    namesz = strlen (name) + 1;

  newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4);

  buf = (char *) realloc (buf, *bufsiz + newspace);
  if (buf == NULL)
    return buf;
  dest = buf + *bufsiz;
  *bufsiz += newspace;
  xnp = (Elf_External_Note *) dest;
  H_PUT_32 (abfd, namesz, xnp->namesz);
  H_PUT_32 (abfd, size, xnp->descsz);
  H_PUT_32 (abfd, type, xnp->type);
  dest = xnp->name;
  if (name != NULL)
    {
      memcpy (dest, name, namesz);
      dest += namesz;
      while (namesz & 3)
	{
	  *dest++ = '\0';
	  ++namesz;
	}
    }
  memcpy (dest, input, size);
  dest += size;
  while (size & 3)
    {
      *dest++ = '\0';
      ++size;
    }
  return buf;
}

/* gcc-8 warns (*) on all the strncpy calls in this function about
   possible string truncation.  The "truncation" is not a bug.  We
   have an external representation of structs with fields that are not
   necessarily NULL terminated and corresponding internal
   representation fields that are one larger so that they can always
   be NULL terminated.
   gcc versions between 4.2 and 4.6 do not allow pragma control of
   diagnostics inside functions, giving a hard error if you try to use
   the finer control available with later versions.
   gcc prior to 4.2 warns about diagnostic push and pop.
   gcc-5, gcc-6 and gcc-7 warn that -Wstringop-truncation is unknown,
   unless you also add #pragma GCC diagnostic ignored "-Wpragma".
   (*) Depending on your system header files!  */
#if GCC_VERSION >= 8000
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wstringop-truncation"
#endif
char *
elfcore_write_prpsinfo (bfd  *abfd,
			char *buf,
			int  *bufsiz,
			const char *fname,
			const char *psargs)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  if (bed->elf_backend_write_core_note != NULL)
    {
      char *ret;
      ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz,
						 NT_PRPSINFO, fname, psargs);
      if (ret != NULL)
	return ret;
    }

#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
# if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
  if (bed->s->elfclass == ELFCLASS32)
    {
#  if defined (HAVE_PSINFO32_T)
      psinfo32_t data;
      int note_type = NT_PSINFO;
#  else
      prpsinfo32_t data;
      int note_type = NT_PRPSINFO;
#  endif

      memset (&data, 0, sizeof (data));
      strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
      strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
      return elfcore_write_note (abfd, buf, bufsiz,
				 "CORE", note_type, &data, sizeof (data));
    }
  else
# endif
    {
# if defined (HAVE_PSINFO_T)
      psinfo_t data;
      int note_type = NT_PSINFO;
# else
      prpsinfo_t data;
      int note_type = NT_PRPSINFO;
# endif

      memset (&data, 0, sizeof (data));
      strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
      strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
      return elfcore_write_note (abfd, buf, bufsiz,
				 "CORE", note_type, &data, sizeof (data));
    }
#endif	/* PSINFO_T or PRPSINFO_T */

  free (buf);
  return NULL;
}
#if GCC_VERSION >= 8000
# pragma GCC diagnostic pop
#endif

char *
elfcore_write_linux_prpsinfo32
  (bfd *abfd, char *buf, int *bufsiz,
   const struct elf_internal_linux_prpsinfo *prpsinfo)
{
  if (get_elf_backend_data (abfd)->linux_prpsinfo32_ugid16)
    {
      struct elf_external_linux_prpsinfo32_ugid16 data;

      swap_linux_prpsinfo32_ugid16_out (abfd, prpsinfo, &data);
      return elfcore_write_note (abfd, buf, bufsiz, "CORE", NT_PRPSINFO,
				 &data, sizeof (data));
    }
  else
    {
      struct elf_external_linux_prpsinfo32_ugid32 data;

      swap_linux_prpsinfo32_ugid32_out (abfd, prpsinfo, &data);
      return elfcore_write_note (abfd, buf, bufsiz, "CORE", NT_PRPSINFO,
				 &data, sizeof (data));
    }
}

char *
elfcore_write_linux_prpsinfo64
  (bfd *abfd, char *buf, int *bufsiz,
   const struct elf_internal_linux_prpsinfo *prpsinfo)
{
  if (get_elf_backend_data (abfd)->linux_prpsinfo64_ugid16)
    {
      struct elf_external_linux_prpsinfo64_ugid16 data;

      swap_linux_prpsinfo64_ugid16_out (abfd, prpsinfo, &data);
      return elfcore_write_note (abfd, buf, bufsiz,
				 "CORE", NT_PRPSINFO, &data, sizeof (data));
    }
  else
    {
      struct elf_external_linux_prpsinfo64_ugid32 data;

      swap_linux_prpsinfo64_ugid32_out (abfd, prpsinfo, &data);
      return elfcore_write_note (abfd, buf, bufsiz,
				 "CORE", NT_PRPSINFO, &data, sizeof (data));
    }
}

char *
elfcore_write_prstatus (bfd *abfd,
			char *buf,
			int *bufsiz,
			long pid,
			int cursig,
			const void *gregs)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  if (bed->elf_backend_write_core_note != NULL)
    {
      char *ret;
      ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz,
						 NT_PRSTATUS,
						 pid, cursig, gregs);
      if (ret != NULL)
	return ret;
    }

#if defined (HAVE_PRSTATUS_T)
#if defined (HAVE_PRSTATUS32_T)
  if (bed->s->elfclass == ELFCLASS32)
    {
      prstatus32_t prstat;

      memset (&prstat, 0, sizeof (prstat));
      prstat.pr_pid = pid;
      prstat.pr_cursig = cursig;
      memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
      return elfcore_write_note (abfd, buf, bufsiz, "CORE",
				 NT_PRSTATUS, &prstat, sizeof (prstat));
    }
  else
#endif
    {
      prstatus_t prstat;

      memset (&prstat, 0, sizeof (prstat));
      prstat.pr_pid = pid;
      prstat.pr_cursig = cursig;
      memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
      return elfcore_write_note (abfd, buf, bufsiz, "CORE",
				 NT_PRSTATUS, &prstat, sizeof (prstat));
    }
#endif /* HAVE_PRSTATUS_T */

  free (buf);
  return NULL;
}

#if defined (HAVE_LWPSTATUS_T)
char *
elfcore_write_lwpstatus (bfd *abfd,
			 char *buf,
			 int *bufsiz,
			 long pid,
			 int cursig,
			 const void *gregs)
{
  lwpstatus_t lwpstat;
  const char *note_name = "CORE";

  memset (&lwpstat, 0, sizeof (lwpstat));
  lwpstat.pr_lwpid  = pid >> 16;
  lwpstat.pr_cursig = cursig;
#if defined (HAVE_LWPSTATUS_T_PR_REG)
  memcpy (&lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg));
#elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
#if !defined(gregs)
  memcpy (lwpstat.pr_context.uc_mcontext.gregs,
	  gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs));
#else
  memcpy (lwpstat.pr_context.uc_mcontext.__gregs,
	  gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs));
#endif
#endif
  return elfcore_write_note (abfd, buf, bufsiz, note_name,
			     NT_LWPSTATUS, &lwpstat, sizeof (lwpstat));
}
#endif /* HAVE_LWPSTATUS_T */

#if defined (HAVE_PSTATUS_T)
char *
elfcore_write_pstatus (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       long pid,
		       int cursig ATTRIBUTE_UNUSED,
		       const void *gregs ATTRIBUTE_UNUSED)
{
  const char *note_name = "CORE";
#if defined (HAVE_PSTATUS32_T)
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);

  if (bed->s->elfclass == ELFCLASS32)
    {
      pstatus32_t pstat;

      memset (&pstat, 0, sizeof (pstat));
      pstat.pr_pid = pid & 0xffff;
      buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
				NT_PSTATUS, &pstat, sizeof (pstat));
      return buf;
    }
  else
#endif
    {
      pstatus_t pstat;

      memset (&pstat, 0, sizeof (pstat));
      pstat.pr_pid = pid & 0xffff;
      buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
				NT_PSTATUS, &pstat, sizeof (pstat));
      return buf;
    }
}
#endif /* HAVE_PSTATUS_T */

char *
elfcore_write_prfpreg (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *fpregs,
		       int size)
{
  const char *note_name = "CORE";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_FPREGSET, fpregs, size);
}

char *
elfcore_write_prxfpreg (bfd *abfd,
			char *buf,
			int *bufsiz,
			const void *xfpregs,
			int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PRXFPREG, xfpregs, size);
}

char *
elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz,
			 const void *xfpregs, int size)
{
  char *note_name;
  if (get_elf_backend_data (abfd)->elf_osabi == ELFOSABI_FREEBSD)
    note_name = "FreeBSD";
  else
    note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_X86_XSTATE, xfpregs, size);
}

char *
elfcore_write_x86_segbases (bfd *abfd, char *buf, int *bufsiz,
			    const void *regs, int size)
{
  char *note_name = "FreeBSD";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_FREEBSD_X86_SEGBASES, regs, size);
}

char *
elfcore_write_ppc_vmx (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *ppc_vmx,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_VMX, ppc_vmx, size);
}

char *
elfcore_write_ppc_vsx (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *ppc_vsx,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_VSX, ppc_vsx, size);
}

char *
elfcore_write_ppc_tar (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *ppc_tar,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TAR, ppc_tar, size);
}

char *
elfcore_write_ppc_ppr (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *ppc_ppr,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_PPR, ppc_ppr, size);
}

char *
elfcore_write_ppc_dscr (bfd *abfd,
			char *buf,
			int *bufsiz,
			const void *ppc_dscr,
			int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_DSCR, ppc_dscr, size);
}

char *
elfcore_write_ppc_ebb (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *ppc_ebb,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_EBB, ppc_ebb, size);
}

char *
elfcore_write_ppc_pmu (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *ppc_pmu,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_PMU, ppc_pmu, size);
}

char *
elfcore_write_ppc_tm_cgpr (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *ppc_tm_cgpr,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CGPR, ppc_tm_cgpr, size);
}

char *
elfcore_write_ppc_tm_cfpr (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *ppc_tm_cfpr,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CFPR, ppc_tm_cfpr, size);
}

char *
elfcore_write_ppc_tm_cvmx (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *ppc_tm_cvmx,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CVMX, ppc_tm_cvmx, size);
}

char *
elfcore_write_ppc_tm_cvsx (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *ppc_tm_cvsx,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CVSX, ppc_tm_cvsx, size);
}

char *
elfcore_write_ppc_tm_spr (bfd *abfd,
			  char *buf,
			  int *bufsiz,
			  const void *ppc_tm_spr,
			  int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_SPR, ppc_tm_spr, size);
}

char *
elfcore_write_ppc_tm_ctar (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *ppc_tm_ctar,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CTAR, ppc_tm_ctar, size);
}

char *
elfcore_write_ppc_tm_cppr (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *ppc_tm_cppr,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CPPR, ppc_tm_cppr, size);
}

char *
elfcore_write_ppc_tm_cdscr (bfd *abfd,
			    char *buf,
			    int *bufsiz,
			    const void *ppc_tm_cdscr,
			    int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_PPC_TM_CDSCR, ppc_tm_cdscr, size);
}

static char *
elfcore_write_s390_high_gprs (bfd *abfd,
			      char *buf,
			      int *bufsiz,
			      const void *s390_high_gprs,
			      int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_HIGH_GPRS,
			     s390_high_gprs, size);
}

char *
elfcore_write_s390_timer (bfd *abfd,
			  char *buf,
			  int *bufsiz,
			  const void *s390_timer,
			  int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_TIMER, s390_timer, size);
}

char *
elfcore_write_s390_todcmp (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *s390_todcmp,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_TODCMP, s390_todcmp, size);
}

char *
elfcore_write_s390_todpreg (bfd *abfd,
			    char *buf,
			    int *bufsiz,
			    const void *s390_todpreg,
			    int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_TODPREG, s390_todpreg, size);
}

char *
elfcore_write_s390_ctrs (bfd *abfd,
			 char *buf,
			 int *bufsiz,
			 const void *s390_ctrs,
			 int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_CTRS, s390_ctrs, size);
}

char *
elfcore_write_s390_prefix (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *s390_prefix,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_PREFIX, s390_prefix, size);
}

char *
elfcore_write_s390_last_break (bfd *abfd,
			       char *buf,
			       int *bufsiz,
			       const void *s390_last_break,
			       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_LAST_BREAK,
			     s390_last_break, size);
}

char *
elfcore_write_s390_system_call (bfd *abfd,
				char *buf,
				int *bufsiz,
				const void *s390_system_call,
				int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_SYSTEM_CALL,
			     s390_system_call, size);
}

char *
elfcore_write_s390_tdb (bfd *abfd,
			char *buf,
			int *bufsiz,
			const void *s390_tdb,
			int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_TDB, s390_tdb, size);
}

char *
elfcore_write_s390_vxrs_low (bfd *abfd,
			     char *buf,
			     int *bufsiz,
			     const void *s390_vxrs_low,
			     int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_VXRS_LOW, s390_vxrs_low, size);
}

char *
elfcore_write_s390_vxrs_high (bfd *abfd,
			     char *buf,
			     int *bufsiz,
			     const void *s390_vxrs_high,
			     int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_VXRS_HIGH,
			     s390_vxrs_high, size);
}

char *
elfcore_write_s390_gs_cb (bfd *abfd,
			  char *buf,
			  int *bufsiz,
			  const void *s390_gs_cb,
			  int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_GS_CB,
			     s390_gs_cb, size);
}

char *
elfcore_write_s390_gs_bc (bfd *abfd,
			  char *buf,
			  int *bufsiz,
			  const void *s390_gs_bc,
			  int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_S390_GS_BC,
			     s390_gs_bc, size);
}

char *
elfcore_write_arm_vfp (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *arm_vfp,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_VFP, arm_vfp, size);
}

char *
elfcore_write_aarch_tls (bfd *abfd,
		       char *buf,
		       int *bufsiz,
		       const void *aarch_tls,
		       int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_TLS, aarch_tls, size);
}

char *
elfcore_write_aarch_hw_break (bfd *abfd,
			    char *buf,
			    int *bufsiz,
			    const void *aarch_hw_break,
			    int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_HW_BREAK, aarch_hw_break, size);
}

char *
elfcore_write_aarch_hw_watch (bfd *abfd,
			    char *buf,
			    int *bufsiz,
			    const void *aarch_hw_watch,
			    int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_HW_WATCH, aarch_hw_watch, size);
}

char *
elfcore_write_aarch_sve (bfd *abfd,
			 char *buf,
			 int *bufsiz,
			 const void *aarch_sve,
			 int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_SVE, aarch_sve, size);
}

char *
elfcore_write_aarch_pauth (bfd *abfd,
			   char *buf,
			   int *bufsiz,
			   const void *aarch_pauth,
			   int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_PAC_MASK, aarch_pauth, size);
}

char *
elfcore_write_aarch_mte (bfd *abfd,
				      char *buf,
				      int *bufsiz,
				      const void *aarch_mte,
				      int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARM_TAGGED_ADDR_CTRL,
			     aarch_mte,
			     size);
}

char *
elfcore_write_arc_v2 (bfd *abfd,
		      char *buf,
		      int *bufsiz,
		      const void *arc_v2,
		      int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_ARC_V2, arc_v2, size);
}

char *
elfcore_write_loongarch_cpucfg (bfd *abfd,
				char *buf,
				int *bufsiz,
				const void *loongarch_cpucfg,
				int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_LARCH_CPUCFG,
			     loongarch_cpucfg, size);
}

char *
elfcore_write_loongarch_lbt (bfd *abfd,
			     char *buf,
			     int *bufsiz,
			     const void *loongarch_lbt,
			     int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_LARCH_LBT, loongarch_lbt, size);
}

char *
elfcore_write_loongarch_lsx (bfd *abfd,
			     char *buf,
			     int *bufsiz,
			     const void *loongarch_lsx,
			     int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_LARCH_LSX, loongarch_lsx, size);
}

char *
elfcore_write_loongarch_lasx (bfd *abfd,
			      char *buf,
			      int *bufsiz,
			      const void *loongarch_lasx,
			      int size)
{
  char *note_name = "LINUX";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_LARCH_LASX, loongarch_lasx, size);
}

/* Write the buffer of csr values in CSRS (length SIZE) into the note
   buffer BUF and update *BUFSIZ.  ABFD is the bfd the note is being
   written into.  Return a pointer to the new start of the note buffer, to
   replace BUF which may no longer be valid.  */

char *
elfcore_write_riscv_csr (bfd *abfd,
			 char *buf,
			 int *bufsiz,
			 const void *csrs,
			 int size)
{
  const char *note_name = "GDB";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_RISCV_CSR, csrs, size);
}

/* Write the target description (a string) pointed to by TDESC, length
   SIZE, into the note buffer BUF, and update *BUFSIZ.  ABFD is the bfd the
   note is being written into.  Return a pointer to the new start of the
   note buffer, to replace BUF which may no longer be valid.  */

char *
elfcore_write_gdb_tdesc (bfd *abfd,
			 char *buf,
			 int *bufsiz,
			 const void *tdesc,
			 int size)
{
  const char *note_name = "GDB";
  return elfcore_write_note (abfd, buf, bufsiz,
			     note_name, NT_GDB_TDESC, tdesc, size);
}

char *
elfcore_write_register_note (bfd *abfd,
			     char *buf,
			     int *bufsiz,
			     const char *section,
			     const void *data,
			     int size)
{
  if (strcmp (section, ".reg2") == 0)
    return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-xfp") == 0)
    return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-xstate") == 0)
    return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-x86-segbases") == 0)
    return elfcore_write_x86_segbases (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-vmx") == 0)
    return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-vsx") == 0)
    return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tar") == 0)
    return elfcore_write_ppc_tar (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-ppr") == 0)
    return elfcore_write_ppc_ppr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-dscr") == 0)
    return elfcore_write_ppc_dscr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-ebb") == 0)
    return elfcore_write_ppc_ebb (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-pmu") == 0)
    return elfcore_write_ppc_pmu (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-cgpr") == 0)
    return elfcore_write_ppc_tm_cgpr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-cfpr") == 0)
    return elfcore_write_ppc_tm_cfpr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-cvmx") == 0)
    return elfcore_write_ppc_tm_cvmx (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-cvsx") == 0)
    return elfcore_write_ppc_tm_cvsx (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-spr") == 0)
    return elfcore_write_ppc_tm_spr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-ctar") == 0)
    return elfcore_write_ppc_tm_ctar (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-cppr") == 0)
    return elfcore_write_ppc_tm_cppr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-ppc-tm-cdscr") == 0)
    return elfcore_write_ppc_tm_cdscr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-high-gprs") == 0)
    return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-timer") == 0)
    return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-todcmp") == 0)
    return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-todpreg") == 0)
    return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-ctrs") == 0)
    return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-prefix") == 0)
    return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-last-break") == 0)
    return elfcore_write_s390_last_break (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-system-call") == 0)
    return elfcore_write_s390_system_call (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-tdb") == 0)
    return elfcore_write_s390_tdb (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-vxrs-low") == 0)
    return elfcore_write_s390_vxrs_low (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-vxrs-high") == 0)
    return elfcore_write_s390_vxrs_high (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-gs-cb") == 0)
    return elfcore_write_s390_gs_cb (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-s390-gs-bc") == 0)
    return elfcore_write_s390_gs_bc (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-arm-vfp") == 0)
    return elfcore_write_arm_vfp (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-aarch-tls") == 0)
    return elfcore_write_aarch_tls (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-aarch-hw-break") == 0)
    return elfcore_write_aarch_hw_break (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-aarch-hw-watch") == 0)
    return elfcore_write_aarch_hw_watch (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-aarch-sve") == 0)
    return elfcore_write_aarch_sve (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-aarch-pauth") == 0)
    return elfcore_write_aarch_pauth (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-aarch-mte") == 0)
    return elfcore_write_aarch_mte (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-arc-v2") == 0)
    return elfcore_write_arc_v2 (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".gdb-tdesc") == 0)
    return elfcore_write_gdb_tdesc (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-riscv-csr") == 0)
    return elfcore_write_riscv_csr (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-loongarch-cpucfg") == 0)
    return elfcore_write_loongarch_cpucfg (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-loongarch-lbt") == 0)
    return elfcore_write_loongarch_lbt (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-loongarch-lsx") == 0)
    return elfcore_write_loongarch_lsx (abfd, buf, bufsiz, data, size);
  if (strcmp (section, ".reg-loongarch-lasx") == 0)
    return elfcore_write_loongarch_lasx (abfd, buf, bufsiz, data, size);
  return NULL;
}

char *
elfcore_write_file_note (bfd *obfd, char *note_data, int *note_size,
			 const void *buf, int bufsiz)
{
  return elfcore_write_note (obfd, note_data, note_size,
			     "CORE", NT_FILE, buf, bufsiz);
}

static bool
elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset,
		 size_t align)
{
  char *p;

  /* NB: CORE PT_NOTE segments may have p_align values of 0 or 1.
     gABI specifies that PT_NOTE alignment should be aligned to 4
     bytes for 32-bit objects and to 8 bytes for 64-bit objects.  If
     align is less than 4, we use 4 byte alignment.   */
  if (align < 4)
    align = 4;
  if (align != 4 && align != 8)
    return false;

  p = buf;
  while (p < buf + size)
    {
      Elf_External_Note *xnp = (Elf_External_Note *) p;
      Elf_Internal_Note in;

      if (offsetof (Elf_External_Note, name) > buf - p + size)
	return false;

      in.type = H_GET_32 (abfd, xnp->type);

      in.namesz = H_GET_32 (abfd, xnp->namesz);
      in.namedata = xnp->name;
      if (in.namesz > buf - in.namedata + size)
	return false;

      in.descsz = H_GET_32 (abfd, xnp->descsz);
      in.descdata = p + ELF_NOTE_DESC_OFFSET (in.namesz, align);
      in.descpos = offset + (in.descdata - buf);
      if (in.descsz != 0
	  && (in.descdata >= buf + size
	      || in.descsz > buf - in.descdata + size))
	return false;

      switch (bfd_get_format (abfd))
	{
	default:
	  return true;

	case bfd_core:
	  {
#define GROKER_ELEMENT(S,F) {S, sizeof (S) - 1, F}
	    struct
	    {
	      const char * string;
	      size_t len;
	      bool (*func) (bfd *, Elf_Internal_Note *);
	    }
	    grokers[] =
	    {
	      GROKER_ELEMENT ("", elfcore_grok_note),
	      GROKER_ELEMENT ("FreeBSD", elfcore_grok_freebsd_note),
	      GROKER_ELEMENT ("NetBSD-CORE", elfcore_grok_netbsd_note),
	      GROKER_ELEMENT ("OpenBSD", elfcore_grok_openbsd_note),
	      GROKER_ELEMENT ("QNX", elfcore_grok_nto_note),
	      GROKER_ELEMENT ("SPU/", elfcore_grok_spu_note),
	      GROKER_ELEMENT ("GNU", elfobj_grok_gnu_note),
	      GROKER_ELEMENT ("CORE", elfcore_grok_solaris_note)
	    };
#undef GROKER_ELEMENT
	    int i;

	    for (i = ARRAY_SIZE (grokers); i--;)
	      {
		if (in.namesz >= grokers[i].len
		    && strncmp (in.namedata, grokers[i].string,
				grokers[i].len) == 0)
		  {
		    if (! grokers[i].func (abfd, & in))
		      return false;
		    break;
		  }
	      }
	    break;
	  }

	case bfd_object:
	  if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0)
	    {
	      if (! elfobj_grok_gnu_note (abfd, &in))
		return false;
	    }
	  else if (in.namesz == sizeof "stapsdt"
		   && strcmp (in.namedata, "stapsdt") == 0)
	    {
	      if (! elfobj_grok_stapsdt_note (abfd, &in))
		return false;
	    }
	  break;
	}

      p += ELF_NOTE_NEXT_OFFSET (in.namesz, in.descsz, align);
    }

  return true;
}

bool
elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size,
		size_t align)
{
  char *buf;

  if (size == 0 || (size + 1) == 0)
    return true;

  if (bfd_seek (abfd, offset, SEEK_SET) != 0)
    return false;

  buf = (char *) _bfd_malloc_and_read (abfd, size + 1, size);
  if (buf == NULL)
    return false;

  /* PR 17512: file: ec08f814
     0-termintate the buffer so that string searches will not overflow.  */
  buf[size] = 0;

  if (!elf_parse_notes (abfd, buf, size, offset, align))
    {
      free (buf);
      return false;
    }

  free (buf);
  return true;
}

/* Providing external access to the ELF program header table.  */

/* Return an upper bound on the number of bytes required to store a
   copy of ABFD's program header table entries.  Return -1 if an error
   occurs; bfd_get_error will return an appropriate code.  */

long
bfd_get_elf_phdr_upper_bound (bfd *abfd)
{
  if (abfd->xvec->flavour != bfd_target_elf_flavour)
    {
      bfd_set_error (bfd_error_wrong_format);
      return -1;
    }

  return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
}

/* Copy ABFD's program header table entries to *PHDRS.  The entries
   will be stored as an array of Elf_Internal_Phdr structures, as
   defined in include/elf/internal.h.  To find out how large the
   buffer needs to be, call bfd_get_elf_phdr_upper_bound.

   Return the number of program header table entries read, or -1 if an
   error occurs; bfd_get_error will return an appropriate code.  */

int
bfd_get_elf_phdrs (bfd *abfd, void *phdrs)
{
  int num_phdrs;

  if (abfd->xvec->flavour != bfd_target_elf_flavour)
    {
      bfd_set_error (bfd_error_wrong_format);
      return -1;
    }

  num_phdrs = elf_elfheader (abfd)->e_phnum;
  if (num_phdrs != 0)
    memcpy (phdrs, elf_tdata (abfd)->phdr,
	    num_phdrs * sizeof (Elf_Internal_Phdr));

  return num_phdrs;
}

enum elf_reloc_type_class
_bfd_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
			   const asection *rel_sec ATTRIBUTE_UNUSED,
			   const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED)
{
  return reloc_class_normal;
}

/* For RELA architectures, return the relocation value for a
   relocation against a local symbol.  */

bfd_vma
_bfd_elf_rela_local_sym (bfd *abfd,
			 Elf_Internal_Sym *sym,
			 asection **psec,
			 Elf_Internal_Rela *rel)
{
  asection *sec = *psec;
  bfd_vma relocation;

  relocation = (sec->output_section->vma
		+ sec->output_offset
		+ sym->st_value);
  if ((sec->flags & SEC_MERGE)
      && ELF_ST_TYPE (sym->st_info) == STT_SECTION
      && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
    {
      rel->r_addend =
	_bfd_merged_section_offset (abfd, psec,
				    elf_section_data (sec)->sec_info,
				    sym->st_value + rel->r_addend);
      if (sec != *psec)
	{
	  /* If we have changed the section, and our original section is
	     marked with SEC_EXCLUDE, it means that the original
	     SEC_MERGE section has been completely subsumed in some
	     other SEC_MERGE section.  In this case, we need to leave
	     some info around for --emit-relocs.  */
	  if ((sec->flags & SEC_EXCLUDE) != 0)
	    sec->kept_section = *psec;
	  sec = *psec;
	}
      rel->r_addend -= relocation;
      rel->r_addend += sec->output_section->vma + sec->output_offset;
    }
  return relocation;
}

bfd_vma
_bfd_elf_rel_local_sym (bfd *abfd,
			Elf_Internal_Sym *sym,
			asection **psec,
			bfd_vma addend)
{
  asection *sec = *psec;

  if (sec->sec_info_type != SEC_INFO_TYPE_MERGE)
    return sym->st_value + addend;

  return _bfd_merged_section_offset (abfd, psec,
				     elf_section_data (sec)->sec_info,
				     sym->st_value + addend);
}

/* Adjust an address within a section.  Given OFFSET within SEC, return
   the new offset within the section, based upon changes made to the
   section.  Returns -1 if the offset is now invalid.
   The offset (in abnd out) is in target sized bytes, however big a
   byte may be.  */

bfd_vma
_bfd_elf_section_offset (bfd *abfd,
			 struct bfd_link_info *info,
			 asection *sec,
			 bfd_vma offset)
{
  switch (sec->sec_info_type)
    {
    case SEC_INFO_TYPE_STABS:
      return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info,
				       offset);
    case SEC_INFO_TYPE_EH_FRAME:
      return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset);

    default:
      if ((sec->flags & SEC_ELF_REVERSE_COPY) != 0)
	{
	  /* Reverse the offset.  */
	  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
	  bfd_size_type address_size = bed->s->arch_size / 8;

	  /* address_size and sec->size are in octets.  Convert
	     to bytes before subtracting the original offset.  */
	  offset = ((sec->size - address_size)
		    / bfd_octets_per_byte (abfd, sec) - offset);
	}
      return offset;
    }
}

/* Create a new BFD as if by bfd_openr.  Rather than opening a file,
   reconstruct an ELF file by reading the segments out of remote memory
   based on the ELF file header at EHDR_VMA and the ELF program headers it
   points to.  If not null, *LOADBASEP is filled in with the difference
   between the VMAs from which the segments were read, and the VMAs the
   file headers (and hence BFD's idea of each section's VMA) put them at.

   The function TARGET_READ_MEMORY is called to copy LEN bytes from the
   remote memory at target address VMA into the local buffer at MYADDR; it
   should return zero on success or an `errno' code on failure.  TEMPL must
   be a BFD for an ELF target with the word size and byte order found in
   the remote memory.  */

bfd *
bfd_elf_bfd_from_remote_memory
  (bfd *templ,
   bfd_vma ehdr_vma,
   bfd_size_type size,
   bfd_vma *loadbasep,
   int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type))
{
  return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory)
    (templ, ehdr_vma, size, loadbasep, target_read_memory);
}

long
_bfd_elf_get_synthetic_symtab (bfd *abfd,
			       long symcount ATTRIBUTE_UNUSED,
			       asymbol **syms ATTRIBUTE_UNUSED,
			       long dynsymcount,
			       asymbol **dynsyms,
			       asymbol **ret)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  asection *relplt;
  asymbol *s;
  const char *relplt_name;
  bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool);
  arelent *p;
  long count, i, n;
  size_t size;
  Elf_Internal_Shdr *hdr;
  char *names;
  asection *plt;

  *ret = NULL;

  if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
    return 0;

  if (dynsymcount <= 0)
    return 0;

  if (!bed->plt_sym_val)
    return 0;

  relplt_name = bed->relplt_name;
  if (relplt_name == NULL)
    relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt";
  relplt = bfd_get_section_by_name (abfd, relplt_name);
  if (relplt == NULL)
    return 0;

  hdr = &elf_section_data (relplt)->this_hdr;
  if (hdr->sh_link != elf_dynsymtab (abfd)
      || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA))
    return 0;

  plt = bfd_get_section_by_name (abfd, ".plt");
  if (plt == NULL)
    return 0;

  slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
  if (! (*slurp_relocs) (abfd, relplt, dynsyms, true))
    return -1;

  count = relplt->size / hdr->sh_entsize;
  size = count * sizeof (asymbol);
  p = relplt->relocation;
  for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
    {
      size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
      if (p->addend != 0)
	{
#ifdef BFD64
	  size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64);
#else
	  size += sizeof ("+0x") - 1 + 8;
#endif
	}
    }

  s = *ret = (asymbol *) bfd_malloc (size);
  if (s == NULL)
    return -1;

  names = (char *) (s + count);
  p = relplt->relocation;
  n = 0;
  for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
    {
      size_t len;
      bfd_vma addr;

      addr = bed->plt_sym_val (i, plt, p);
      if (addr == (bfd_vma) -1)
	continue;

      *s = **p->sym_ptr_ptr;
      /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set.  Since
	 we are defining a symbol, ensure one of them is set.  */
      if ((s->flags & BSF_LOCAL) == 0)
	s->flags |= BSF_GLOBAL;
      s->flags |= BSF_SYNTHETIC;
      s->section = plt;
      s->value = addr - plt->vma;
      s->name = names;
      s->udata.p = NULL;
      len = strlen ((*p->sym_ptr_ptr)->name);
      memcpy (names, (*p->sym_ptr_ptr)->name, len);
      names += len;
      if (p->addend != 0)
	{
	  char buf[30], *a;

	  memcpy (names, "+0x", sizeof ("+0x") - 1);
	  names += sizeof ("+0x") - 1;
	  bfd_sprintf_vma (abfd, buf, p->addend);
	  for (a = buf; *a == '0'; ++a)
	    ;
	  len = strlen (a);
	  memcpy (names, a, len);
	  names += len;
	}
      memcpy (names, "@plt", sizeof ("@plt"));
      names += sizeof ("@plt");
      ++s, ++n;
    }

  return n;
}

/* It is only used by x86-64 so far.
   ??? This repeats *COM* id of zero.  sec->id is supposed to be unique,
   but current usage would allow all of _bfd_std_section to be zero.  */
static const asymbol lcomm_sym
  = GLOBAL_SYM_INIT ("LARGE_COMMON", &_bfd_elf_large_com_section);
asection _bfd_elf_large_com_section
  = BFD_FAKE_SECTION (_bfd_elf_large_com_section, &lcomm_sym,
		      "LARGE_COMMON", 0, SEC_IS_COMMON);

bool
_bfd_elf_final_write_processing (bfd *abfd)
{
  Elf_Internal_Ehdr *i_ehdrp;	/* ELF file header, internal form.  */

  i_ehdrp = elf_elfheader (abfd);

  if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE)
    i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;

  /* Set the osabi field to ELFOSABI_GNU if the binary contains
     SHF_GNU_MBIND or SHF_GNU_RETAIN sections or symbols of STT_GNU_IFUNC type
     or STB_GNU_UNIQUE binding.  */
  if (elf_tdata (abfd)->has_gnu_osabi != 0)
    {
      if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE)
	i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
      else if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU
	       && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_FREEBSD)
	{
	  if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind)
	    _bfd_error_handler (_("GNU_MBIND section is supported only by GNU "
				  "and FreeBSD targets"));
	  if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_ifunc)
	    _bfd_error_handler (_("symbol type STT_GNU_IFUNC is supported "
				  "only by GNU and FreeBSD targets"));
	  if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_unique)
	    _bfd_error_handler (_("symbol binding STB_GNU_UNIQUE is supported "
				  "only by GNU and FreeBSD targets"));
	  if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_retain)
	    _bfd_error_handler (_("GNU_RETAIN section is supported "
				  "only by GNU and FreeBSD targets"));
	  bfd_set_error (bfd_error_sorry);
	  return false;
	}
    }
  return true;
}


/* Return TRUE for ELF symbol types that represent functions.
   This is the default version of this function, which is sufficient for
   most targets.  It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC.  */

bool
_bfd_elf_is_function_type (unsigned int type)
{
  return (type == STT_FUNC
	  || type == STT_GNU_IFUNC);
}

/* If the ELF symbol SYM might be a function in SEC, return the
   function size and set *CODE_OFF to the function's entry point,
   otherwise return zero.  */

bfd_size_type
_bfd_elf_maybe_function_sym (const asymbol *sym, asection *sec,
			     bfd_vma *code_off)
{
  bfd_size_type size;
  elf_symbol_type * elf_sym = (elf_symbol_type *) sym;

  if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
		     | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0
      || sym->section != sec)
    return 0;

  size = (sym->flags & BSF_SYNTHETIC) ? 0 : elf_sym->internal_elf_sym.st_size;

  /* In theory we should check that the symbol's type satisfies
     _bfd_elf_is_function_type(), but there are some function-like
     symbols which would fail this test.  (eg _start).  Instead
     we check for hidden, local, notype symbols with zero size.
     This type of symbol is generated by the annobin plugin for gcc
     and clang, and should not be considered to be a function symbol.  */
  if (size == 0
      && ((sym->flags & (BSF_SYNTHETIC | BSF_LOCAL)) == BSF_LOCAL)
      && ELF_ST_TYPE (elf_sym->internal_elf_sym.st_info) == STT_NOTYPE
      && ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other) == STV_HIDDEN)
    return 0;

  *code_off = sym->value;
  /* Do not return 0 for the function's size.  */
  return size ? size : 1;
}

/* Set to non-zero to enable some debug messages.  */
#define DEBUG_SECONDARY_RELOCS	 0

/* An internal-to-the-bfd-library only section type
   used to indicate a cached secondary reloc section.  */
#define SHT_SECONDARY_RELOC	 (SHT_LOOS + SHT_RELA)

/* Create a BFD section to hold a secondary reloc section.  */

bool
_bfd_elf_init_secondary_reloc_section (bfd * abfd,
				       Elf_Internal_Shdr *hdr,
				       const char * name,
				       unsigned int shindex)
{
  /* We only support RELA secondary relocs.  */
  if (hdr->sh_type != SHT_RELA)
    return false;

#if DEBUG_SECONDARY_RELOCS
  fprintf (stderr, "secondary reloc section %s encountered\n", name);
#endif
  hdr->sh_type = SHT_SECONDARY_RELOC;
  return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
}

/* Read in any secondary relocs associated with SEC.  */

bool
_bfd_elf_slurp_secondary_reloc_section (bfd *       abfd,
					asection *  sec,
					asymbol **  symbols,
					bool dynamic)
{
  const struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
  asection * relsec;
  bool result = true;
  bfd_vma (*r_sym) (bfd_vma);
  ufile_ptr filesize;

#if BFD_DEFAULT_TARGET_SIZE > 32
  if (bfd_arch_bits_per_address (abfd) != 32)
    r_sym = elf64_r_sym;
  else
#endif
    r_sym = elf32_r_sym;

  if (!elf_section_data (sec)->has_secondary_relocs)
    return true;

  /* Discover if there are any secondary reloc sections
     associated with SEC.  */
  filesize = bfd_get_file_size (abfd);
  for (relsec = abfd->sections; relsec != NULL; relsec = relsec->next)
    {
      Elf_Internal_Shdr * hdr = & elf_section_data (relsec)->this_hdr;

      if (hdr->sh_type == SHT_SECONDARY_RELOC
	  && hdr->sh_info == (unsigned) elf_section_data (sec)->this_idx
	  && (hdr->sh_entsize == ebd->s->sizeof_rel
	      || hdr->sh_entsize == ebd->s->sizeof_rela))
	{
	  bfd_byte * native_relocs;
	  bfd_byte * native_reloc;
	  arelent * internal_relocs;
	  arelent * internal_reloc;
	  size_t i;
	  unsigned int entsize;
	  unsigned int symcount;
	  bfd_size_type reloc_count;
	  size_t amt;

	  if (ebd->elf_info_to_howto == NULL)
	    return false;

#if DEBUG_SECONDARY_RELOCS
	  fprintf (stderr, "read secondary relocs for %s from %s\n",
		   sec->name, relsec->name);
#endif
	  entsize = hdr->sh_entsize;

	  if (filesize != 0
	      && ((ufile_ptr) hdr->sh_offset > filesize
		  || hdr->sh_size > filesize - hdr->sh_offset))
	    {
	      bfd_set_error (bfd_error_file_truncated);
	      result = false;
	      continue;
	    }

	  native_relocs = bfd_malloc (hdr->sh_size);
	  if (native_relocs == NULL)
	    {
	      result = false;
	      continue;
	    }

	  reloc_count = NUM_SHDR_ENTRIES (hdr);
	  if (_bfd_mul_overflow (reloc_count, sizeof (arelent), & amt))
	    {
	      free (native_relocs);
	      bfd_set_error (bfd_error_file_too_big);
	      result = false;
	      continue;
	    }

	  internal_relocs = (arelent *) bfd_alloc (abfd, amt);
	  if (internal_relocs == NULL)
	    {
	      free (native_relocs);
	      result = false;
	      continue;
	    }

	  if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
	      || (bfd_bread (native_relocs, hdr->sh_size, abfd)
		  != hdr->sh_size))
	    {
	      free (native_relocs);
	      /* The internal_relocs will be freed when
		 the memory for the bfd is released.  */
	      result = false;
	      continue;
	    }

	  if (dynamic)
	    symcount = bfd_get_dynamic_symcount (abfd);
	  else
	    symcount = bfd_get_symcount (abfd);

	  for (i = 0, internal_reloc = internal_relocs,
		 native_reloc = native_relocs;
	       i < reloc_count;
	       i++, internal_reloc++, native_reloc += entsize)
	    {
	      bool res;
	      Elf_Internal_Rela rela;

	      if (entsize == ebd->s->sizeof_rel)
		ebd->s->swap_reloc_in (abfd, native_reloc, & rela);
	      else /* entsize == ebd->s->sizeof_rela */
		ebd->s->swap_reloca_in (abfd, native_reloc, & rela);

	      /* The address of an ELF reloc is section relative for an object
		 file, and absolute for an executable file or shared library.
		 The address of a normal BFD reloc is always section relative,
		 and the address of a dynamic reloc is absolute..  */
	      if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
		internal_reloc->address = rela.r_offset;
	      else
		internal_reloc->address = rela.r_offset - sec->vma;

	      if (r_sym (rela.r_info) == STN_UNDEF)
		{
		  /* FIXME: This and the error case below mean that we
		     have a symbol on relocs that is not elf_symbol_type.  */
		  internal_reloc->sym_ptr_ptr =
		    bfd_abs_section_ptr->symbol_ptr_ptr;
		}
	      else if (r_sym (rela.r_info) > symcount)
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB(%pA): relocation %zu has invalid symbol index %lu"),
		     abfd, sec, i, (long) r_sym (rela.r_info));
		  bfd_set_error (bfd_error_bad_value);
		  internal_reloc->sym_ptr_ptr =
		    bfd_abs_section_ptr->symbol_ptr_ptr;
		  result = false;
		}
	      else
		{
		  asymbol **ps;

		  ps = symbols + r_sym (rela.r_info) - 1;
		  internal_reloc->sym_ptr_ptr = ps;
		  /* Make sure that this symbol is not removed by strip.  */
		  (*ps)->flags |= BSF_KEEP;
		}

	      internal_reloc->addend = rela.r_addend;

	      res = ebd->elf_info_to_howto (abfd, internal_reloc, & rela);
	      if (! res || internal_reloc->howto == NULL)
		{
#if DEBUG_SECONDARY_RELOCS
		  fprintf (stderr,
			   "there is no howto associated with reloc %lx\n",
			   rela.r_info);
#endif
		  result = false;
		}
	    }

	  free (native_relocs);
	  /* Store the internal relocs.  */
	  elf_section_data (relsec)->sec_info = internal_relocs;
	}
    }

  return result;
}

/* Set the ELF section header fields of an output secondary reloc section.  */

bool
_bfd_elf_copy_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
				      bfd *obfd ATTRIBUTE_UNUSED,
				      const Elf_Internal_Shdr *isection,
				      Elf_Internal_Shdr *osection)
{
  asection * isec;
  asection * osec;
  struct bfd_elf_section_data * esd;

  if (isection == NULL)
    return false;

  if (isection->sh_type != SHT_SECONDARY_RELOC)
    return true;

  isec = isection->bfd_section;
  if (isec == NULL)
    return false;

  osec = osection->bfd_section;
  if (osec == NULL)
    return false;

  esd = elf_section_data (osec);
  BFD_ASSERT (esd->sec_info == NULL);
  esd->sec_info = elf_section_data (isec)->sec_info;
  osection->sh_type = SHT_RELA;
  osection->sh_link = elf_onesymtab (obfd);
  if (osection->sh_link == 0)
    {
      /* There is no symbol table - we are hosed...  */
      _bfd_error_handler
	/* xgettext:c-format */
	(_("%pB(%pA): link section cannot be set"
	   " because the output file does not have a symbol table"),
	obfd, osec);
      bfd_set_error (bfd_error_bad_value);
      return false;
    }

  /* Find the output section that corresponds to the isection's
     sh_info link.  */
  if (isection->sh_info == 0
      || isection->sh_info >= elf_numsections (ibfd))
    {
      _bfd_error_handler
	/* xgettext:c-format */
	(_("%pB(%pA): info section index is invalid"),
	obfd, osec);
      bfd_set_error (bfd_error_bad_value);
      return false;
    }

  isection = elf_elfsections (ibfd)[isection->sh_info];

  if (isection == NULL
      || isection->bfd_section == NULL
      || isection->bfd_section->output_section == NULL)
    {
      _bfd_error_handler
	/* xgettext:c-format */
	(_("%pB(%pA): info section index cannot be set"
	   " because the section is not in the output"),
	obfd, osec);
      bfd_set_error (bfd_error_bad_value);
      return false;
    }

  esd = elf_section_data (isection->bfd_section->output_section);
  BFD_ASSERT (esd != NULL);
  osection->sh_info = esd->this_idx;
  esd->has_secondary_relocs = true;
#if DEBUG_SECONDARY_RELOCS
  fprintf (stderr, "update header of %s, sh_link = %u, sh_info = %u\n",
	   osec->name, osection->sh_link, osection->sh_info);
  fprintf (stderr, "mark section %s as having secondary relocs\n",
	   bfd_section_name (isection->bfd_section->output_section));
#endif

  return true;
}

/* Write out a secondary reloc section.

   FIXME: Currently this function can result in a serious performance penalty
   for files with secondary relocs and lots of sections.  The proper way to
   fix this is for _bfd_elf_copy_special_section_fields() to chain secondary
   relocs together and then to have this function just walk that chain.  */

bool
_bfd_elf_write_secondary_reloc_section (bfd *abfd, asection *sec)
{
  const struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
  bfd_vma addr_offset;
  asection * relsec;
  bfd_vma (*r_info) (bfd_vma, bfd_vma);
  bool result = true;

  if (sec == NULL)
    return false;

#if BFD_DEFAULT_TARGET_SIZE > 32
  if (bfd_arch_bits_per_address (abfd) != 32)
    r_info = elf64_r_info;
  else
#endif
    r_info = elf32_r_info;

  /* The address of an ELF reloc is section relative for an object
     file, and absolute for an executable file or shared library.
     The address of a BFD reloc is always section relative.  */
  addr_offset = 0;
  if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
    addr_offset = sec->vma;

  /* Discover if there are any secondary reloc sections
     associated with SEC.  */
  for (relsec = abfd->sections; relsec != NULL; relsec = relsec->next)
    {
      const struct bfd_elf_section_data * const esd = elf_section_data (relsec);
      Elf_Internal_Shdr * const hdr = (Elf_Internal_Shdr *) & esd->this_hdr;

      if (hdr->sh_type == SHT_RELA
	  && hdr->sh_info == (unsigned) elf_section_data (sec)->this_idx)
	{
	  asymbol *    last_sym;
	  int          last_sym_idx;
	  size_t       reloc_count;
	  size_t       idx;
	  bfd_size_type entsize;
	  arelent *    src_irel;
	  bfd_byte *   dst_rela;

	  if (hdr->contents != NULL)
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB(%pA): error: secondary reloc section processed twice"),
		 abfd, relsec);
	      bfd_set_error (bfd_error_bad_value);
	      result = false;
	      continue;
	    }

	  entsize = hdr->sh_entsize;
	  if (entsize == 0)
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB(%pA): error: secondary reloc section"
		   " has zero sized entries"),
		 abfd, relsec);
	      bfd_set_error (bfd_error_bad_value);
	      result = false;
	      continue;
	    }
	  else if (entsize != ebd->s->sizeof_rel
		   && entsize != ebd->s->sizeof_rela)
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB(%pA): error: secondary reloc section"
		   " has non-standard sized entries"),
		 abfd, relsec);
	      bfd_set_error (bfd_error_bad_value);
	      result = false;
	      continue;
	    }

	  reloc_count = hdr->sh_size / entsize;
	  hdr->sh_size = entsize * reloc_count;
	  if (reloc_count == 0)
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB(%pA): error: secondary reloc section is empty!"),
		 abfd, relsec);
	      bfd_set_error (bfd_error_bad_value);
	      result = false;
	      continue;
	    }

	  hdr->contents = bfd_alloc (abfd, hdr->sh_size);
	  if (hdr->contents == NULL)
	    continue;

#if DEBUG_SECONDARY_RELOCS
	  fprintf (stderr, "write %u secondary relocs for %s from %s\n",
		   reloc_count, sec->name, relsec->name);
#endif
	  last_sym = NULL;
	  last_sym_idx = 0;
	  dst_rela = hdr->contents;
	  src_irel = (arelent *) esd->sec_info;
	  if (src_irel == NULL)
	    {
	      _bfd_error_handler
		/* xgettext:c-format */
		(_("%pB(%pA): error: internal relocs missing"
		   " for secondary reloc section"),
		 abfd, relsec);
	      bfd_set_error (bfd_error_bad_value);
	      result = false;
	      continue;
	    }

	  for (idx = 0; idx < reloc_count; idx++, dst_rela += entsize)
	    {
	      Elf_Internal_Rela src_rela;
	      arelent *ptr;
	      asymbol *sym;
	      int n;

	      ptr = src_irel + idx;
	      if (ptr == NULL)
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB(%pA): error: reloc table entry %zu is empty"),
		     abfd, relsec, idx);
		  bfd_set_error (bfd_error_bad_value);
		  result = false;
		  break;
		}

	      if (ptr->sym_ptr_ptr == NULL)
		{
		  /* FIXME: Is this an error ? */
		  n = 0;
		}
	      else
		{
		  sym = *ptr->sym_ptr_ptr;

		  if (sym == last_sym)
		    n = last_sym_idx;
		  else
		    {
		      n = _bfd_elf_symbol_from_bfd_symbol (abfd, & sym);
		      if (n < 0)
			{
			  _bfd_error_handler
			    /* xgettext:c-format */
			    (_("%pB(%pA): error: secondary reloc %zu"
			       " references a missing symbol"),
			     abfd, relsec, idx);
			  bfd_set_error (bfd_error_bad_value);
			  result = false;
			  n = 0;
			}

		      last_sym = sym;
		      last_sym_idx = n;
		    }

		  if (sym->the_bfd != NULL
		      && sym->the_bfd->xvec != abfd->xvec
		      && ! _bfd_elf_validate_reloc (abfd, ptr))
		    {
		      _bfd_error_handler
			/* xgettext:c-format */
			(_("%pB(%pA): error: secondary reloc %zu"
			   " references a deleted symbol"),
			 abfd, relsec, idx);
		      bfd_set_error (bfd_error_bad_value);
		      result = false;
		      n = 0;
		    }
		}

	      src_rela.r_offset = ptr->address + addr_offset;
	      if (ptr->howto == NULL)
		{
		  _bfd_error_handler
		    /* xgettext:c-format */
		    (_("%pB(%pA): error: secondary reloc %zu"
		       " is of an unknown type"),
		     abfd, relsec, idx);
		  bfd_set_error (bfd_error_bad_value);
		  result = false;
		  src_rela.r_info = r_info (0, 0);
		}
	      else
		src_rela.r_info = r_info (n, ptr->howto->type);
	      src_rela.r_addend = ptr->addend;

	      if (entsize == ebd->s->sizeof_rel)
		ebd->s->swap_reloc_out (abfd, &src_rela, dst_rela);
	      else /* entsize == ebd->s->sizeof_rela */
		ebd->s->swap_reloca_out (abfd, &src_rela, dst_rela);
	    }
	}
    }

  return result;
}