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
|
/* PowerPC-specific support for 32-bit ELF
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
/* This file is based on a preliminary PowerPC ELF ABI. The
information may not match the final PowerPC ELF ABI. It includes
suggestions from the in-progress Embedded PowerPC ABI, and that
information may also not match. */
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/ppc.h"
#include "elf32-ppc.h"
#include "elf-vxworks.h"
/* RELA relocations are used here. */
static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc_elf_unhandled_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
/* Branch prediction bit for branch taken relocs. */
#define BRANCH_PREDICT_BIT 0x200000
/* Mask to set RA in memory instructions. */
#define RA_REGISTER_MASK 0x001f0000
/* Value to shift register by to insert RA. */
#define RA_REGISTER_SHIFT 16
/* The name of the dynamic interpreter. This is put in the .interp
section. */
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
/* For old-style PLT. */
/* The number of single-slot PLT entries (the rest use two slots). */
#define PLT_NUM_SINGLE_ENTRIES 8192
/* For new-style .glink and .plt. */
#define GLINK_PLTRESOLVE 16*4
#define GLINK_ENTRY_SIZE 4*4
/* VxWorks uses its own plt layout, filled in by the static linker. */
/* The standard VxWorks PLT entry. */
#define VXWORKS_PLT_ENTRY_SIZE 32
static const bfd_vma ppc_elf_vxworks_plt_entry
[VXWORKS_PLT_ENTRY_SIZE / 4] =
{
0x3d800000, /* lis r12,0 */
0x818c0000, /* lwz r12,0(r12) */
0x7d8903a6, /* mtctr r12 */
0x4e800420, /* bctr */
0x39600000, /* li r11,0 */
0x48000000, /* b 14 <.PLT0resolve+0x4> */
0x60000000, /* nop */
0x60000000, /* nop */
};
static const bfd_vma ppc_elf_vxworks_pic_plt_entry
[VXWORKS_PLT_ENTRY_SIZE / 4] =
{
0x3d9e0000, /* addis r12,r30,0 */
0x818c0000, /* lwz r12,0(r12) */
0x7d8903a6, /* mtctr r12 */
0x4e800420, /* bctr */
0x39600000, /* li r11,0 */
0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
0x60000000, /* nop */
0x60000000, /* nop */
};
/* The initial VxWorks PLT entry. */
#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
static const bfd_vma ppc_elf_vxworks_plt0_entry
[VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
{
0x3d800000, /* lis r12,0 */
0x398c0000, /* addi r12,r12,0 */
0x800c0008, /* lwz r0,8(r12) */
0x7c0903a6, /* mtctr r0 */
0x818c0004, /* lwz r12,4(r12) */
0x4e800420, /* bctr */
0x60000000, /* nop */
0x60000000, /* nop */
};
static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
[VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
{
0x819e0008, /* lwz r12,8(r30) */
0x7d8903a6, /* mtctr r12 */
0x819e0004, /* lwz r12,4(r30) */
0x4e800420, /* bctr */
0x60000000, /* nop */
0x60000000, /* nop */
0x60000000, /* nop */
0x60000000, /* nop */
};
/* For executables, we have some additional relocations in
.rela.plt.unloaded, for the kernel loader. */
/* The number of non-JMP_SLOT relocations per PLT0 slot. */
#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
/* The number of relocations in the PLTResolve slot. */
#define VXWORKS_PLTRESOLVE_RELOCS 2
/* The number of relocations in the PLTResolve slot when when creating
a shared library. */
#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
/* Some instructions. */
#define ADDIS_11_11 0x3d6b0000
#define ADDIS_11_30 0x3d7e0000
#define ADDIS_12_12 0x3d8c0000
#define ADDI_11_11 0x396b0000
#define ADD_0_11_11 0x7c0b5a14
#define ADD_11_0_11 0x7d605a14
#define B 0x48000000
#define BCL_20_31 0x429f0005
#define BCTR 0x4e800420
#define LIS_11 0x3d600000
#define LIS_12 0x3d800000
#define LWZU_0_12 0x840c0000
#define LWZ_0_12 0x800c0000
#define LWZ_11_11 0x816b0000
#define LWZ_11_30 0x817e0000
#define LWZ_12_12 0x818c0000
#define MFLR_0 0x7c0802a6
#define MFLR_12 0x7d8802a6
#define MTCTR_0 0x7c0903a6
#define MTCTR_11 0x7d6903a6
#define MTLR_0 0x7c0803a6
#define NOP 0x60000000
#define SUB_11_11_12 0x7d6c5850
/* Offset of tp and dtp pointers from start of TLS block. */
#define TP_OFFSET 0x7000
#define DTP_OFFSET 0x8000
static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
static reloc_howto_type ppc_elf_howto_raw[] = {
/* This reloc does nothing. */
HOWTO (R_PPC_NONE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A standard 32 bit relocation. */
HOWTO (R_PPC_ADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* An absolute 26 bit branch; the lower two bits must be zero.
FIXME: we don't check that, we just clear them. */
HOWTO (R_PPC_ADDR24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR24", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
FALSE), /* pcrel_offset */
/* A standard 16 bit relocation. */
HOWTO (R_PPC_ADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit relocation without overflow. */
HOWTO (R_PPC_ADDR16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The high order 16 bits of an address. */
HOWTO (R_PPC_ADDR16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The high order 16 bits of an address, plus 1 if the contents of
the low 16 bits, treated as a signed number, is negative. */
HOWTO (R_PPC_ADDR16_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_ADDR16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* An absolute 16 bit branch; the lower two bits must be zero.
FIXME: we don't check that, we just clear them. */
HOWTO (R_PPC_ADDR14, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
FALSE), /* pcrel_offset */
/* An absolute 16 bit branch, for which bit 10 should be set to
indicate that the branch is expected to be taken. The lower two
bits must be zero. */
HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14_BRTAKEN",/* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
FALSE), /* pcrel_offset */
/* An absolute 16 bit branch, for which bit 10 should be set to
indicate that the branch is not expected to be taken. The lower
two bits must be zero. */
HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14_BRNTAKEN",/* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
FALSE), /* pcrel_offset */
/* A relative 26 bit branch; the lower two bits must be zero. */
HOWTO (R_PPC_REL24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL24", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
TRUE), /* pcrel_offset */
/* A relative 16 bit branch; the lower two bits must be zero. */
HOWTO (R_PPC_REL14, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
TRUE), /* pcrel_offset */
/* A relative 16 bit branch. Bit 10 should be set to indicate that
the branch is expected to be taken. The lower two bits must be
zero. */
HOWTO (R_PPC_REL14_BRTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14_BRTAKEN", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
TRUE), /* pcrel_offset */
/* A relative 16 bit branch. Bit 10 should be set to indicate that
the branch is not expected to be taken. The lower two bits must
be zero. */
HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14_BRNTAKEN",/* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
TRUE), /* pcrel_offset */
/* Like R_PPC_ADDR16, but referring to the GOT table entry for the
symbol. */
HOWTO (R_PPC_GOT16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GOT16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
the symbol. */
HOWTO (R_PPC_GOT16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GOT16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
the symbol. */
HOWTO (R_PPC_GOT16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GOT16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
the symbol. */
HOWTO (R_PPC_GOT16_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_GOT16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_REL24, but referring to the procedure linkage table
entry for the symbol. */
HOWTO (R_PPC_PLTREL24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLTREL24", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
TRUE), /* pcrel_offset */
/* This is used only by the dynamic linker. The symbol should exist
both in the object being run and in some shared library. The
dynamic linker copies the data addressed by the symbol from the
shared library into the object, because the object being
run has to have the data at some particular address. */
HOWTO (R_PPC_COPY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_COPY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR32, but used when setting global offset table
entries. */
HOWTO (R_PPC_GLOB_DAT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GLOB_DAT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Marks a procedure linkage table entry for a symbol. */
HOWTO (R_PPC_JMP_SLOT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_JMP_SLOT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* Used only by the dynamic linker. When the object is run, this
longword is set to the load address of the object, plus the
addend. */
HOWTO (R_PPC_RELATIVE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_RELATIVE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_REL24, but uses the value of the symbol within the
object rather than the final value. Normally used for
_GLOBAL_OFFSET_TABLE_. */
HOWTO (R_PPC_LOCAL24PC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_LOCAL24PC", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
TRUE), /* pcrel_offset */
/* Like R_PPC_ADDR32, but may be unaligned. */
HOWTO (R_PPC_UADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_UADDR32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16, but may be unaligned. */
HOWTO (R_PPC_UADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_UADDR16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32-bit PC relative */
HOWTO (R_PPC_REL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* 32-bit relocation to the symbol's procedure linkage table.
FIXME: not supported. */
HOWTO (R_PPC_PLT32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
FIXME: not supported. */
HOWTO (R_PPC_PLTREL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLTREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
TRUE), /* pcrel_offset */
/* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
the symbol. */
HOWTO (R_PPC_PLT16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
the symbol. */
HOWTO (R_PPC_PLT16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
the symbol. */
HOWTO (R_PPC_PLT16_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_PLT16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
small data items. */
HOWTO (R_PPC_SDAREL16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SDAREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16-bit section relative relocation. */
HOWTO (R_PPC_SECTOFF, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16-bit lower half section relative relocation. */
HOWTO (R_PPC_SECTOFF_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16-bit upper half section relative relocation. */
HOWTO (R_PPC_SECTOFF_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16-bit upper half adjusted section relative relocation. */
HOWTO (R_PPC_SECTOFF_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_SECTOFF_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Marker reloc for TLS. */
HOWTO (R_PPC_TLS,
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_TLS", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* Computes the load module index of the load module that contains the
definition of its TLS sym. */
HOWTO (R_PPC_DTPMOD32,
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_DTPMOD32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Computes a dtv-relative displacement, the difference between the value
of sym+add and the base address of the thread-local storage block that
contains the definition of sym, minus 0x8000. */
HOWTO (R_PPC_DTPREL32,
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_DTPREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit dtprel reloc. */
HOWTO (R_PPC_DTPREL16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_DTPREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like DTPREL16, but no overflow. */
HOWTO (R_PPC_DTPREL16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_DTPREL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like DTPREL16_LO, but next higher group of 16 bits. */
HOWTO (R_PPC_DTPREL16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_DTPREL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like DTPREL16_HI, but adjust for low 16 bits. */
HOWTO (R_PPC_DTPREL16_HA,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_DTPREL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Computes a tp-relative displacement, the difference between the value of
sym+add and the value of the thread pointer (r13). */
HOWTO (R_PPC_TPREL32,
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_TPREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit tprel reloc. */
HOWTO (R_PPC_TPREL16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_TPREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like TPREL16, but no overflow. */
HOWTO (R_PPC_TPREL16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_TPREL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like TPREL16_LO, but next higher group of 16 bits. */
HOWTO (R_PPC_TPREL16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_TPREL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like TPREL16_HI, but adjust for low 16 bits. */
HOWTO (R_PPC_TPREL16_HA,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_TPREL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
to the first entry. */
HOWTO (R_PPC_GOT_TLSGD16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSGD16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TLSGD16, but no overflow. */
HOWTO (R_PPC_GOT_TLSGD16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSGD16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
HOWTO (R_PPC_GOT_TLSGD16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSGD16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
HOWTO (R_PPC_GOT_TLSGD16_HA,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSGD16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
with values (sym+add)@dtpmod and zero, and computes the offset to the
first entry. */
HOWTO (R_PPC_GOT_TLSLD16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSLD16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TLSLD16, but no overflow. */
HOWTO (R_PPC_GOT_TLSLD16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSLD16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
HOWTO (R_PPC_GOT_TLSLD16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSLD16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
HOWTO (R_PPC_GOT_TLSLD16_HA,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TLSLD16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
the offset to the entry. */
HOWTO (R_PPC_GOT_DTPREL16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_DTPREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_DTPREL16, but no overflow. */
HOWTO (R_PPC_GOT_DTPREL16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_DTPREL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
HOWTO (R_PPC_GOT_DTPREL16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_DTPREL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
HOWTO (R_PPC_GOT_DTPREL16_HA,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_DTPREL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
offset to the entry. */
HOWTO (R_PPC_GOT_TPREL16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TPREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TPREL16, but no overflow. */
HOWTO (R_PPC_GOT_TPREL16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TPREL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
HOWTO (R_PPC_GOT_TPREL16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TPREL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
HOWTO (R_PPC_GOT_TPREL16_HA,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unhandled_reloc, /* special_function */
"R_PPC_GOT_TPREL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
/* 32 bit value resulting from the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16 bit value resulting from the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16 bit value resulting from the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_ADDR16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The high order 16 bits of the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The high order 16 bits of the result of the addend minus the address,
plus 1 if the contents of the low 16 bits, treated as a signed number,
is negative. */
HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_EMB_NADDR16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16 bit value resulting from allocating a 4 byte word to hold an
address in the .sdata section, and returning the offset from
_SDA_BASE_ for that relocation. */
HOWTO (R_PPC_EMB_SDAI16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_SDAI16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16 bit value resulting from allocating a 4 byte word to hold an
address in the .sdata2 section, and returning the offset from
_SDA2_BASE_ for that relocation. */
HOWTO (R_PPC_EMB_SDA2I16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_SDA2I16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
small data items. */
HOWTO (R_PPC_EMB_SDA2REL, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_SDA2REL", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
signed offset from the appropriate base, and filling in the register
field with the appropriate register (0, 2, or 13). */
HOWTO (R_PPC_EMB_SDA21, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_SDA21", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Relocation not handled: R_PPC_EMB_MRKREF */
/* Relocation not handled: R_PPC_EMB_RELSEC16 */
/* Relocation not handled: R_PPC_EMB_RELST_LO */
/* Relocation not handled: R_PPC_EMB_RELST_HI */
/* Relocation not handled: R_PPC_EMB_RELST_HA */
/* Relocation not handled: R_PPC_EMB_BIT_FLD */
/* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
in the 16 bit signed offset from the appropriate base, and filling in the
register field with the appropriate register (0, 2, or 13). */
HOWTO (R_PPC_EMB_RELSDA, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_RELSDA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit relative relocation. */
HOWTO (R_PPC_REL16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 16 bit relative relocation without overflow. */
HOWTO (R_PPC_REL16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* The high order 16 bits of a relative address. */
HOWTO (R_PPC_REL16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* The high order 16 bits of a relative address, plus 1 if the contents of
the low 16 bits, treated as a signed number, is negative. */
HOWTO (R_PPC_REL16_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_REL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_PPC_GNU_VTINHERIT, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_PPC_GNU_VTINHERIT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* GNU extension to record C++ vtable member usage. */
HOWTO (R_PPC_GNU_VTENTRY, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_PPC_GNU_VTENTRY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* Phony reloc to handle AIX style TOC entries. */
HOWTO (R_PPC_TOC16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_TOC16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
static void
ppc_elf_howto_init (void)
{
unsigned int i, type;
for (i = 0;
i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
i++)
{
type = ppc_elf_howto_raw[i].type;
if (type >= (sizeof (ppc_elf_howto_table)
/ sizeof (ppc_elf_howto_table[0])))
abort ();
ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
}
}
static reloc_howto_type *
ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
enum elf_ppc_reloc_type r;
/* Initialize howto table if not already done. */
if (!ppc_elf_howto_table[R_PPC_ADDR32])
ppc_elf_howto_init ();
switch (code)
{
default:
return NULL;
case BFD_RELOC_NONE: r = R_PPC_NONE; break;
case BFD_RELOC_32: r = R_PPC_ADDR32; break;
case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
case BFD_RELOC_16: r = R_PPC_ADDR16; break;
case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
}
return ppc_elf_howto_table[r];
};
/* Set the howto pointer for a PowerPC ELF reloc. */
static void
ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
/* Initialize howto table if not already done. */
if (!ppc_elf_howto_table[R_PPC_ADDR32])
ppc_elf_howto_init ();
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
}
/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
static bfd_reloc_status_type
ppc_elf_addr16_ha_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)
{
bfd_vma relocation;
if (output_bfd != NULL)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc_entry->addend;
if (reloc_entry->howto->pc_relative)
relocation -= reloc_entry->address;
reloc_entry->addend += (relocation & 0x8000) << 1;
return bfd_reloc_continue;
}
static bfd_reloc_status_type
ppc_elf_unhandled_reloc (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol,
void *data,
asection *input_section,
bfd *output_bfd,
char **error_message)
{
/* If this is a relocatable link (output_bfd test tells us), just
call the generic function. Any adjustment will be done at final
link time. */
if (output_bfd != NULL)
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
if (error_message != NULL)
{
static char buf[60];
sprintf (buf, _("generic linker can't handle %s"),
reloc_entry->howto->name);
*error_message = buf;
}
return bfd_reloc_dangerous;
}
/* Sections created by the linker. */
typedef struct elf_linker_section
{
/* Pointer to the bfd section. */
asection *section;
/* Section name. */
const char *name;
/* Associated bss section name. */
const char *bss_name;
/* Associated symbol name. */
const char *sym_name;
/* Associated symbol. */
struct elf_link_hash_entry *sym;
} elf_linker_section_t;
/* Linked list of allocated pointer entries. This hangs off of the
symbol lists, and provides allows us to return different pointers,
based on different addend's. */
typedef struct elf_linker_section_pointers
{
/* next allocated pointer for this symbol */
struct elf_linker_section_pointers *next;
/* offset of pointer from beginning of section */
bfd_vma offset;
/* addend used */
bfd_vma addend;
/* which linker section this is */
elf_linker_section_t *lsect;
} elf_linker_section_pointers_t;
struct ppc_elf_obj_tdata
{
struct elf_obj_tdata elf;
/* A mapping from local symbols to offsets into the various linker
sections added. This is index by the symbol index. */
elf_linker_section_pointers_t **linker_section_pointers;
};
#define ppc_elf_tdata(bfd) \
((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
#define elf_local_ptr_offsets(bfd) \
(ppc_elf_tdata (bfd)->linker_section_pointers)
/* Override the generic function because we store some extras. */
static bfd_boolean
ppc_elf_mkobject (bfd *abfd)
{
bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
abfd->tdata.any = bfd_zalloc (abfd, amt);
if (abfd->tdata.any == NULL)
return FALSE;
return TRUE;
}
/* Fix bad default arch selected for a 32 bit input bfd when the
default is 64 bit. */
static bfd_boolean
ppc_elf_object_p (bfd *abfd)
{
if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
{
Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
{
/* Relies on arch after 64 bit default being 32 bit default. */
abfd->arch_info = abfd->arch_info->next;
BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
}
}
return TRUE;
}
/* Function to set whether a module needs the -mrelocatable bit set. */
static bfd_boolean
ppc_elf_set_private_flags (bfd *abfd, flagword flags)
{
BFD_ASSERT (!elf_flags_init (abfd)
|| elf_elfheader (abfd)->e_flags == flags);
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = TRUE;
return TRUE;
}
/* Support for core dump NOTE sections. */
static bfd_boolean
ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
unsigned int size;
switch (note->descsz)
{
default:
return FALSE;
case 268: /* Linux/PPC. */
/* pr_cursig */
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
size = 192;
break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
size, note->descpos + offset);
}
static bfd_boolean
ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->descsz)
{
default:
return FALSE;
case 128: /* Linux/PPC elf_prpsinfo. */
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
elf_tdata (abfd)->core_command
= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
}
/* 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;
}
/* Return address for Ith PLT stub in section PLT, for relocation REL
or (bfd_vma) -1 if it should not be included. */
static bfd_vma
ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
const asection *plt ATTRIBUTE_UNUSED,
const arelent *rel)
{
return rel->address;
}
/* Handle a PowerPC specific section when reading an object file. This
is called when bfd_section_from_shdr finds a section with an unknown
type. */
static bfd_boolean
ppc_elf_section_from_shdr (bfd *abfd,
Elf_Internal_Shdr *hdr,
const char *name,
int shindex)
{
asection *newsect;
flagword flags;
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
return FALSE;
newsect = hdr->bfd_section;
flags = bfd_get_section_flags (abfd, newsect);
if (hdr->sh_flags & SHF_EXCLUDE)
flags |= SEC_EXCLUDE;
if (hdr->sh_type == SHT_ORDERED)
flags |= SEC_SORT_ENTRIES;
bfd_set_section_flags (abfd, newsect, flags);
return TRUE;
}
/* Set up any other section flags and such that may be necessary. */
static bfd_boolean
ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
Elf_Internal_Shdr *shdr,
asection *asect)
{
if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
shdr->sh_flags |= SHF_EXCLUDE;
if ((asect->flags & SEC_SORT_ENTRIES) != 0)
shdr->sh_type = SHT_ORDERED;
return TRUE;
}
/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
need to bump up the number of section headers. */
static int
ppc_elf_additional_program_headers (bfd *abfd)
{
asection *s;
int ret = 0;
s = bfd_get_section_by_name (abfd, ".sbss2");
if (s != NULL && (s->flags & SEC_ALLOC) != 0)
++ret;
s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
if (s != NULL && (s->flags & SEC_ALLOC) != 0)
++ret;
return ret;
}
/* Add extra PPC sections -- Note, for now, make .sbss2 and
.PPC.EMB.sbss0 a normal section, and not a bss section so
that the linker doesn't crater when trying to make more than
2 sections. */
static const struct bfd_elf_special_section ppc_elf_special_sections[] =
{
{ ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
{ ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
{ ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
{ ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
{ ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
{ ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
{ ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
{ ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
{ NULL, 0, 0, 0, 0 }
};
/* This is what we want for new plt/got. */
static struct bfd_elf_special_section ppc_alt_plt =
{ ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC };
static const struct bfd_elf_special_section *
ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
{
const struct bfd_elf_special_section *ssect;
/* See if this is one of the special sections. */
if (sec->name == NULL)
return NULL;
ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
sec->use_rela_p);
if (ssect != NULL)
{
if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
ssect = &ppc_alt_plt;
return ssect;
}
return _bfd_elf_get_sec_type_attr (abfd, sec);
}
/* Very simple linked list structure for recording apuinfo values. */
typedef struct apuinfo_list
{
struct apuinfo_list *next;
unsigned long value;
}
apuinfo_list;
static apuinfo_list *head;
static void
apuinfo_list_init (void)
{
head = NULL;
}
static void
apuinfo_list_add (unsigned long value)
{
apuinfo_list *entry = head;
while (entry != NULL)
{
if (entry->value == value)
return;
entry = entry->next;
}
entry = bfd_malloc (sizeof (* entry));
if (entry == NULL)
return;
entry->value = value;
entry->next = head;
head = entry;
}
static unsigned
apuinfo_list_length (void)
{
apuinfo_list *entry;
unsigned long count;
for (entry = head, count = 0;
entry;
entry = entry->next)
++ count;
return count;
}
static inline unsigned long
apuinfo_list_element (unsigned long number)
{
apuinfo_list * entry;
for (entry = head;
entry && number --;
entry = entry->next)
;
return entry ? entry->value : 0;
}
static void
apuinfo_list_finish (void)
{
apuinfo_list *entry;
for (entry = head; entry;)
{
apuinfo_list *next = entry->next;
free (entry);
entry = next;
}
head = NULL;
}
#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
#define APUINFO_LABEL "APUinfo"
/* Scan the input BFDs and create a linked list of
the APUinfo values that will need to be emitted. */
static void
ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
{
bfd *ibfd;
asection *asec;
char *buffer;
unsigned num_input_sections;
bfd_size_type output_section_size;
unsigned i;
unsigned num_entries;
unsigned long offset;
unsigned long length;
const char *error_message = NULL;
if (link_info == NULL)
return;
/* Scan the input bfds, looking for apuinfo sections. */
num_input_sections = 0;
output_section_size = 0;
for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
{
asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
if (asec)
{
++ num_input_sections;
output_section_size += asec->size;
}
}
/* We need at least one input sections
in order to make merging worthwhile. */
if (num_input_sections < 1)
return;
/* Just make sure that the output section exists as well. */
asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
if (asec == NULL)
return;
/* Allocate a buffer for the contents of the input sections. */
buffer = bfd_malloc (output_section_size);
if (buffer == NULL)
return;
offset = 0;
apuinfo_list_init ();
/* Read in the input sections contents. */
for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
{
unsigned long datum;
char *ptr;
asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
if (asec == NULL)
continue;
length = asec->size;
if (length < 24)
{
error_message = _("corrupt or empty %s section in %B");
goto fail;
}
if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
|| (bfd_bread (buffer + offset, length, ibfd) != length))
{
error_message = _("unable to read in %s section from %B");
goto fail;
}
/* Process the contents of the section. */
ptr = buffer + offset;
error_message = _("corrupt %s section in %B");
/* Verify the contents of the header. Note - we have to
extract the values this way in order to allow for a
host whose endian-ness is different from the target. */
datum = bfd_get_32 (ibfd, ptr);
if (datum != sizeof APUINFO_LABEL)
goto fail;
datum = bfd_get_32 (ibfd, ptr + 8);
if (datum != 0x2)
goto fail;
if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
goto fail;
/* Get the number of bytes used for apuinfo entries. */
datum = bfd_get_32 (ibfd, ptr + 4);
if (datum + 20 != length)
goto fail;
/* Make sure that we do not run off the end of the section. */
if (offset + length > output_section_size)
goto fail;
/* Scan the apuinfo section, building a list of apuinfo numbers. */
for (i = 0; i < datum; i += 4)
apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
/* Update the offset. */
offset += length;
}
error_message = NULL;
/* Compute the size of the output section. */
num_entries = apuinfo_list_length ();
output_section_size = 20 + num_entries * 4;
asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
if (! bfd_set_section_size (abfd, asec, output_section_size))
ibfd = abfd,
error_message = _("warning: unable to set size of %s section in %B");
fail:
free (buffer);
if (error_message)
(*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
}
/* Prevent the output section from accumulating the input sections'
contents. We have already stored this in our linked list structure. */
static bfd_boolean
ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
asection *asec,
bfd_byte *contents ATTRIBUTE_UNUSED)
{
return (apuinfo_list_length ()
&& strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
}
/* Finally we can generate the output section. */
static void
ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
{
bfd_byte *buffer;
asection *asec;
unsigned i;
unsigned num_entries;
bfd_size_type length;
asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
if (asec == NULL)
return;
if (apuinfo_list_length () == 0)
return;
length = asec->size;
if (length < 20)
return;
buffer = bfd_malloc (length);
if (buffer == NULL)
{
(*_bfd_error_handler)
(_("failed to allocate space for new APUinfo section."));
return;
}
/* Create the apuinfo header. */
num_entries = apuinfo_list_length ();
bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
bfd_put_32 (abfd, num_entries * 4, buffer + 4);
bfd_put_32 (abfd, 0x2, buffer + 8);
strcpy ((char *) buffer + 12, APUINFO_LABEL);
length = 20;
for (i = 0; i < num_entries; i++)
{
bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
length += 4;
}
if (length != asec->size)
(*_bfd_error_handler) (_("failed to compute new APUinfo section."));
if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
(*_bfd_error_handler) (_("failed to install new APUinfo section."));
free (buffer);
apuinfo_list_finish ();
}
/* The following functions are specific to the ELF linker, while
functions above are used generally. They appear in this file more
or less in the order in which they are called. eg.
ppc_elf_check_relocs is called early in the link process,
ppc_elf_finish_dynamic_sections is one of the last functions
called. */
/* The PPC linker needs to keep track of the number of relocs that it
decides to copy as dynamic relocs in check_relocs for each symbol.
This is so that it can later discard them if they are found to be
unnecessary. We store the information in a field extending the
regular ELF linker hash table. */
struct ppc_elf_dyn_relocs
{
struct ppc_elf_dyn_relocs *next;
/* The input section of the reloc. */
asection *sec;
/* Total number of relocs copied for the input section. */
bfd_size_type count;
/* Number of pc-relative relocs copied for the input section. */
bfd_size_type pc_count;
};
/* Track PLT entries needed for a given symbol. We might need more
than one glink entry per symbol. */
struct plt_entry
{
struct plt_entry *next;
/* -fPIC uses multiple GOT sections, one per file, called ".got2".
This field stores the offset into .got2 used to initialise the
GOT pointer reg. It will always be at least 32768 (and for
current gcc this is the only offset used). */
bfd_vma addend;
/* The .got2 section. */
asection *sec;
/* PLT refcount or offset. */
union
{
bfd_signed_vma refcount;
bfd_vma offset;
} plt;
/* .glink stub offset. */
bfd_vma glink_offset;
};
/* Of those relocs that might be copied as dynamic relocs, this macro
selects those that must be copied when linking a shared library,
even when the symbol is local. */
#define MUST_BE_DYN_RELOC(RTYPE) \
((RTYPE) != R_PPC_REL24 \
&& (RTYPE) != R_PPC_REL14 \
&& (RTYPE) != R_PPC_REL14_BRTAKEN \
&& (RTYPE) != R_PPC_REL14_BRNTAKEN \
&& (RTYPE) != R_PPC_REL32)
/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
copying dynamic variables from a shared lib into an app's dynbss
section, and instead use a dynamic relocation to point into the
shared lib. */
#define ELIMINATE_COPY_RELOCS 1
/* PPC ELF linker hash entry. */
struct ppc_elf_link_hash_entry
{
struct elf_link_hash_entry elf;
/* If this symbol is used in the linker created sections, the processor
specific backend uses this field to map the field into the offset
from the beginning of the section. */
elf_linker_section_pointers_t *linker_section_pointer;
/* Track dynamic relocs copied for this symbol. */
struct ppc_elf_dyn_relocs *dyn_relocs;
/* Contexts in which symbol is used in the GOT (or TOC).
TLS_GD .. TLS_TLS bits are or'd into the mask as the
corresponding relocs are encountered during check_relocs.
tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
indicate the corresponding GOT entry type is not needed. */
#define TLS_GD 1 /* GD reloc. */
#define TLS_LD 2 /* LD reloc. */
#define TLS_TPREL 4 /* TPREL reloc, => IE. */
#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
#define TLS_TLS 16 /* Any TLS reloc. */
#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
char tls_mask;
/* Nonzero if we have seen a small data relocation referring to this
symbol. */
unsigned char has_sda_refs;
};
#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
enum ppc_elf_plt_type {
PLT_UNSET,
PLT_OLD,
PLT_NEW,
PLT_VXWORKS
};
/* PPC ELF linker hash table. */
struct ppc_elf_link_hash_table
{
struct elf_link_hash_table elf;
/* Short-cuts to get to dynamic linker sections. */
asection *got;
asection *relgot;
asection *glink;
asection *plt;
asection *relplt;
asection *dynbss;
asection *relbss;
asection *dynsbss;
asection *relsbss;
elf_linker_section_t sdata[2];
asection *sbss;
/* Shortcut to .__tls_get_addr. */
struct elf_link_hash_entry *tls_get_addr;
/* TLS local dynamic got entry handling. */
union {
bfd_signed_vma refcount;
bfd_vma offset;
} tlsld_got;
/* Offset of PltResolve function in glink. */
bfd_vma glink_pltresolve;
/* Size of reserved GOT entries. */
unsigned int got_header_size;
/* Non-zero if allocating the header left a gap. */
unsigned int got_gap;
/* The type of PLT we have chosen to use. */
enum ppc_elf_plt_type plt_type;
/* Whether we can use the new PLT layout. */
unsigned int can_use_new_plt:1;
/* Set if we should emit symbols for stubs. */
unsigned int emit_stub_syms:1;
/* Small local sym to section mapping cache. */
struct sym_sec_cache sym_sec;
/* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
asection *srelplt2;
/* The .got.plt section (VxWorks only)*/
asection *sgotplt;
/* True if the target system is VxWorks. */
int is_vxworks;
/* The size of PLT entries. */
int plt_entry_size;
/* The distance between adjacent PLT slots. */
int plt_slot_size;
/* The size of the first PLT entry. */
int plt_initial_entry_size;
};
/* Get the PPC ELF linker hash table from a link_info structure. */
#define ppc_elf_hash_table(p) \
((struct ppc_elf_link_hash_table *) (p)->hash)
/* Create an entry in a PPC ELF linker hash table. */
static struct bfd_hash_entry *
ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
struct bfd_hash_table *table,
const char *string)
{
/* Allocate the structure if it has not already been allocated by a
subclass. */
if (entry == NULL)
{
entry = bfd_hash_allocate (table,
sizeof (struct ppc_elf_link_hash_entry));
if (entry == NULL)
return entry;
}
/* Call the allocation method of the superclass. */
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
if (entry != NULL)
{
ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
ppc_elf_hash_entry (entry)->tls_mask = 0;
}
return entry;
}
/* Create a PPC ELF linker hash table. */
static struct bfd_link_hash_table *
ppc_elf_link_hash_table_create (bfd *abfd)
{
struct ppc_elf_link_hash_table *ret;
ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
if (ret == NULL)
return NULL;
if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
ppc_elf_link_hash_newfunc))
{
free (ret);
return NULL;
}
ret->elf.init_plt_refcount.refcount = 0;
ret->elf.init_plt_refcount.glist = NULL;
ret->elf.init_plt_offset.offset = 0;
ret->elf.init_plt_offset.glist = NULL;
ret->sdata[0].name = ".sdata";
ret->sdata[0].sym_name = "_SDA_BASE_";
ret->sdata[0].bss_name = ".sbss";
ret->sdata[1].name = ".sdata2";
ret->sdata[1].sym_name = "_SDA2_BASE_";
ret->sdata[1].bss_name = ".sbss2";
ret->plt_entry_size = 12;
ret->plt_slot_size = 8;
ret->plt_initial_entry_size = 72;
ret->is_vxworks = 0;
return &ret->elf.root;
}
/* Create .got and the related sections. */
static bfd_boolean
ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
{
struct ppc_elf_link_hash_table *htab;
asection *s;
flagword flags;
if (!_bfd_elf_create_got_section (abfd, info))
return FALSE;
htab = ppc_elf_hash_table (info);
htab->got = s = bfd_get_section_by_name (abfd, ".got");
if (s == NULL)
abort ();
if (htab->is_vxworks)
{
htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
if (!htab->sgotplt)
abort ();
}
else
{
/* The powerpc .got has a blrl instruction in it. Mark it
executable. */
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
if (!bfd_set_section_flags (abfd, s, flags))
return FALSE;
}
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED | SEC_READONLY);
htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
if (!htab->relgot
|| ! bfd_set_section_alignment (abfd, htab->relgot, 2))
return FALSE;
return TRUE;
}
/* We have to create .dynsbss and .rela.sbss here so that they get mapped
to output sections (just like _bfd_elf_create_dynamic_sections has
to create .dynbss and .rela.bss). */
static bfd_boolean
ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
{
struct ppc_elf_link_hash_table *htab;
asection *s;
flagword flags;
htab = ppc_elf_hash_table (info);
if (htab->got == NULL
&& !ppc_elf_create_got (abfd, info))
return FALSE;
if (!_bfd_elf_create_dynamic_sections (abfd, info))
return FALSE;
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
htab->glink = s;
if (s == NULL
|| !bfd_set_section_alignment (abfd, s, 4))
return FALSE;
htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
s = bfd_make_section_with_flags (abfd, ".dynsbss",
SEC_ALLOC | SEC_LINKER_CREATED);
htab->dynsbss = s;
if (s == NULL)
return FALSE;
if (! info->shared)
{
htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
htab->relsbss = s;
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, 2))
return FALSE;
}
/* Create the section for VxWorks static plt relocations. */
if (htab->is_vxworks && !info->shared)
{
s = bfd_make_section (abfd, ".rela.plt.unloaded");
flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY
| SEC_LINKER_CREATED);
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags)
|| ! bfd_set_section_alignment (abfd, s,
get_elf_backend_data (abfd)->s->log_file_align))
return FALSE;
htab->srelplt2 = s;
}
htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
if (s == NULL)
abort ();
flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
if (htab->plt_type == PLT_VXWORKS)
/* The VxWorks PLT is a loaded section with contents. */
flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
return bfd_set_section_flags (abfd, s, flags);
}
/* Copy the extra info we tack onto an elf_link_hash_entry. */
static void
ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *dir,
struct elf_link_hash_entry *ind)
{
struct ppc_elf_link_hash_entry *edir, *eind;
edir = (struct ppc_elf_link_hash_entry *) dir;
eind = (struct ppc_elf_link_hash_entry *) ind;
if (eind->dyn_relocs != NULL)
{
if (edir->dyn_relocs != NULL)
{
struct ppc_elf_dyn_relocs **pp;
struct ppc_elf_dyn_relocs *p;
/* Add reloc counts against the indirect sym to the direct sym
list. Merge any entries against the same section. */
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
{
struct ppc_elf_dyn_relocs *q;
for (q = edir->dyn_relocs; q != NULL; q = q->next)
if (q->sec == p->sec)
{
q->pc_count += p->pc_count;
q->count += p->count;
*pp = p->next;
break;
}
if (q == NULL)
pp = &p->next;
}
*pp = edir->dyn_relocs;
}
edir->dyn_relocs = eind->dyn_relocs;
eind->dyn_relocs = NULL;
}
edir->tls_mask |= eind->tls_mask;
edir->has_sda_refs |= eind->has_sda_refs;
/* If called to transfer flags for a weakdef during processing
of elf_adjust_dynamic_symbol, don't copy non_got_ref.
We clear it ourselves for ELIMINATE_COPY_RELOCS. */
if (!(ELIMINATE_COPY_RELOCS
&& eind->elf.root.type != bfd_link_hash_indirect
&& edir->elf.dynamic_adjusted))
edir->elf.non_got_ref |= eind->elf.non_got_ref;
edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
edir->elf.ref_regular |= eind->elf.ref_regular;
edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
edir->elf.needs_plt |= eind->elf.needs_plt;
/* If we were called to copy over info for a weak sym, that's all. */
if (eind->elf.root.type != bfd_link_hash_indirect)
return;
/* Copy over the GOT refcount entries that we may have already seen to
the symbol which just became indirect. */
edir->elf.got.refcount += eind->elf.got.refcount;
eind->elf.got.refcount = 0;
/* And plt entries. */
if (eind->elf.plt.plist != NULL)
{
if (edir->elf.plt.plist != NULL)
{
struct plt_entry **entp;
struct plt_entry *ent;
for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
{
struct plt_entry *dent;
for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
if (dent->sec == ent->sec && dent->addend == ent->addend)
{
dent->plt.refcount += ent->plt.refcount;
*entp = ent->next;
break;
}
if (dent == NULL)
entp = &ent->next;
}
*entp = edir->elf.plt.plist;
}
edir->elf.plt.plist = eind->elf.plt.plist;
eind->elf.plt.plist = NULL;
}
if (eind->elf.dynindx != -1)
{
if (edir->elf.dynindx != -1)
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
edir->elf.dynstr_index);
edir->elf.dynindx = eind->elf.dynindx;
edir->elf.dynstr_index = eind->elf.dynstr_index;
eind->elf.dynindx = -1;
eind->elf.dynstr_index = 0;
}
}
/* Return 1 if target is one of ours. */
static bfd_boolean
is_ppc_elf_target (const struct bfd_target *targ)
{
extern const bfd_target bfd_elf32_powerpc_vec;
extern const bfd_target bfd_elf32_powerpcle_vec;
return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
}
/* Hook called by the linker routine which adds symbols from an object
file. We use it to put .comm items in .sbss, and not .bss. */
static bfd_boolean
ppc_elf_add_symbol_hook (bfd *abfd,
struct bfd_link_info *info,
Elf_Internal_Sym *sym,
const char **namep ATTRIBUTE_UNUSED,
flagword *flagsp ATTRIBUTE_UNUSED,
asection **secp,
bfd_vma *valp)
{
if (sym->st_shndx == SHN_COMMON
&& !info->relocatable
&& sym->st_size <= elf_gp_size (abfd)
&& is_ppc_elf_target (info->hash->creator))
{
/* Common symbols less than or equal to -G nn bytes are automatically
put into .sbss. */
struct ppc_elf_link_hash_table *htab;
htab = ppc_elf_hash_table (info);
if (htab->sbss == NULL)
{
flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
if (!htab->elf.dynobj)
htab->elf.dynobj = abfd;
htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
".sbss",
flags);
if (htab->sbss == NULL)
return FALSE;
}
*secp = htab->sbss;
*valp = sym->st_size;
}
return TRUE;
}
static bfd_boolean
create_sdata_sym (struct ppc_elf_link_hash_table *htab,
elf_linker_section_t *lsect)
{
lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
TRUE, FALSE, TRUE);
if (lsect->sym == NULL)
return FALSE;
if (lsect->sym->root.type == bfd_link_hash_new)
lsect->sym->non_elf = 0;
lsect->sym->ref_regular = 1;
return TRUE;
}
/* Create a special linker section. */
static bfd_boolean
ppc_elf_create_linker_section (bfd *abfd,
struct bfd_link_info *info,
flagword flags,
elf_linker_section_t *lsect)
{
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
asection *s;
flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED);
/* Record the first bfd that needs the special sections. */
if (!htab->elf.dynobj)
htab->elf.dynobj = abfd;
s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
lsect->name,
flags);
if (s == NULL
|| !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
return FALSE;
lsect->section = s;
return create_sdata_sym (htab, lsect);
}
/* Find a linker generated pointer with a given addend and type. */
static elf_linker_section_pointers_t *
elf_find_pointer_linker_section
(elf_linker_section_pointers_t *linker_pointers,
bfd_vma addend,
elf_linker_section_t *lsect)
{
for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
return linker_pointers;
return NULL;
}
/* Allocate a pointer to live in a linker created section. */
static bfd_boolean
elf_create_pointer_linker_section (bfd *abfd,
elf_linker_section_t *lsect,
struct elf_link_hash_entry *h,
const Elf_Internal_Rela *rel)
{
elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
elf_linker_section_pointers_t *linker_section_ptr;
unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
bfd_size_type amt;
BFD_ASSERT (lsect != NULL);
/* Is this a global symbol? */
if (h != NULL)
{
struct ppc_elf_link_hash_entry *eh;
/* Has this symbol already been allocated? If so, our work is done. */
eh = (struct ppc_elf_link_hash_entry *) h;
if (elf_find_pointer_linker_section (eh->linker_section_pointer,
rel->r_addend,
lsect))
return TRUE;
ptr_linker_section_ptr = &eh->linker_section_pointer;
}
else
{
/* Allocation of a pointer to a local symbol. */
elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
/* Allocate a table to hold the local symbols if first time. */
if (!ptr)
{
unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
amt = num_symbols;
amt *= sizeof (elf_linker_section_pointers_t *);
ptr = bfd_zalloc (abfd, amt);
if (!ptr)
return FALSE;
elf_local_ptr_offsets (abfd) = ptr;
}
/* Has this symbol already been allocated? If so, our work is done. */
if (elf_find_pointer_linker_section (ptr[r_symndx],
rel->r_addend,
lsect))
return TRUE;
ptr_linker_section_ptr = &ptr[r_symndx];
}
/* Allocate space for a pointer in the linker section, and allocate
a new pointer record from internal memory. */
BFD_ASSERT (ptr_linker_section_ptr != NULL);
amt = sizeof (elf_linker_section_pointers_t);
linker_section_ptr = bfd_alloc (abfd, amt);
if (!linker_section_ptr)
return FALSE;
linker_section_ptr->next = *ptr_linker_section_ptr;
linker_section_ptr->addend = rel->r_addend;
linker_section_ptr->lsect = lsect;
*ptr_linker_section_ptr = linker_section_ptr;
linker_section_ptr->offset = lsect->section->size;
lsect->section->size += 4;
#ifdef DEBUG
fprintf (stderr,
"Create pointer in linker section %s, offset = %ld, section size = %ld\n",
lsect->name, (long) linker_section_ptr->offset,
(long) lsect->section->size);
#endif
return TRUE;
}
static bfd_boolean
update_local_sym_info (bfd *abfd,
Elf_Internal_Shdr *symtab_hdr,
unsigned long r_symndx,
int tls_type)
{
bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
char *local_got_tls_masks;
if (local_got_refcounts == NULL)
{
bfd_size_type size = symtab_hdr->sh_info;
size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
local_got_refcounts = bfd_zalloc (abfd, size);
if (local_got_refcounts == NULL)
return FALSE;
elf_local_got_refcounts (abfd) = local_got_refcounts;
}
local_got_refcounts[r_symndx] += 1;
local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
local_got_tls_masks[r_symndx] |= tls_type;
return TRUE;
}
static bfd_boolean
update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
asection *sec, bfd_vma addend)
{
struct plt_entry *ent;
if (addend < 32768)
sec = NULL;
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
if (ent->sec == sec && ent->addend == addend)
break;
if (ent == NULL)
{
bfd_size_type amt = sizeof (*ent);
ent = bfd_alloc (abfd, amt);
if (ent == NULL)
return FALSE;
ent->next = h->plt.plist;
ent->sec = sec;
ent->addend = addend;
ent->plt.refcount = 0;
h->plt.plist = ent;
}
ent->plt.refcount += 1;
return TRUE;
}
static struct plt_entry *
find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
{
struct plt_entry *ent;
if (addend < 32768)
sec = NULL;
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
if (ent->sec == sec && ent->addend == addend)
break;
return ent;
}
static void
bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
{
(*_bfd_error_handler)
(_("%B: relocation %s cannot be used when making a shared object"),
abfd,
ppc_elf_howto_table[r_type]->name);
bfd_set_error (bfd_error_bad_value);
}
/* Look through the relocs for a section during the first phase, and
allocate space in the global offset table or procedure linkage
table. */
static bfd_boolean
ppc_elf_check_relocs (bfd *abfd,
struct bfd_link_info *info,
asection *sec,
const Elf_Internal_Rela *relocs)
{
struct ppc_elf_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *got2, *sreloc;
if (info->relocatable)
return TRUE;
/* Don't do anything special with non-loaded, non-alloced sections.
In particular, any relocs in such sections should not affect GOT
and PLT reference counting (ie. we don't allow them to create GOT
or PLT entries), there's no possibility or desire to optimize TLS
relocs, and there's not much point in propagating relocs to shared
libs that the dynamic linker won't relocate. */
if ((sec->flags & SEC_ALLOC) == 0)
return TRUE;
#ifdef DEBUG
_bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
sec, abfd);
#endif
/* Initialize howto table if not already done. */
if (!ppc_elf_howto_table[R_PPC_ADDR32])
ppc_elf_howto_init ();
htab = ppc_elf_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
got2 = bfd_get_section_by_name (abfd, ".got2");
sreloc = NULL;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
unsigned long r_symndx;
enum elf_ppc_reloc_type r_type;
struct elf_link_hash_entry *h;
int tls_type = 0;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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;
}
/* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
This shows up in particular in an R_PPC_ADDR32 in the eabi
startup code. */
if (h != NULL
&& htab->got == NULL
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
{
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
if (!ppc_elf_create_got (htab->elf.dynobj, info))
return FALSE;
BFD_ASSERT (h == htab->elf.hgot);
}
r_type = ELF32_R_TYPE (rel->r_info);
switch (r_type)
{
case R_PPC_GOT_TLSLD16:
case R_PPC_GOT_TLSLD16_LO:
case R_PPC_GOT_TLSLD16_HI:
case R_PPC_GOT_TLSLD16_HA:
htab->tlsld_got.refcount += 1;
tls_type = TLS_TLS | TLS_LD;
goto dogottls;
case R_PPC_GOT_TLSGD16:
case R_PPC_GOT_TLSGD16_LO:
case R_PPC_GOT_TLSGD16_HI:
case R_PPC_GOT_TLSGD16_HA:
tls_type = TLS_TLS | TLS_GD;
goto dogottls;
case R_PPC_GOT_TPREL16:
case R_PPC_GOT_TPREL16_LO:
case R_PPC_GOT_TPREL16_HI:
case R_PPC_GOT_TPREL16_HA:
if (info->shared)
info->flags |= DF_STATIC_TLS;
tls_type = TLS_TLS | TLS_TPREL;
goto dogottls;
case R_PPC_GOT_DTPREL16:
case R_PPC_GOT_DTPREL16_LO:
case R_PPC_GOT_DTPREL16_HI:
case R_PPC_GOT_DTPREL16_HA:
tls_type = TLS_TLS | TLS_DTPREL;
dogottls:
sec->has_tls_reloc = 1;
/* Fall thru */
/* GOT16 relocations */
case R_PPC_GOT16:
case R_PPC_GOT16_LO:
case R_PPC_GOT16_HI:
case R_PPC_GOT16_HA:
/* This symbol requires a global offset table entry. */
if (htab->got == NULL)
{
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
if (!ppc_elf_create_got (htab->elf.dynobj, info))
return FALSE;
}
if (h != NULL)
{
h->got.refcount += 1;
ppc_elf_hash_entry (h)->tls_mask |= tls_type;
}
else
/* This is a global offset table entry for a local symbol. */
if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
return FALSE;
break;
/* Indirect .sdata relocation. */
case R_PPC_EMB_SDAI16:
if (info->shared)
{
bad_shared_reloc (abfd, r_type);
return FALSE;
}
if (htab->sdata[0].section == NULL
&& !ppc_elf_create_linker_section (abfd, info, 0,
&htab->sdata[0]))
return FALSE;
if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
h, rel))
return FALSE;
if (h != NULL)
{
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
h->non_got_ref = TRUE;
}
break;
/* Indirect .sdata2 relocation. */
case R_PPC_EMB_SDA2I16:
if (info->shared)
{
bad_shared_reloc (abfd, r_type);
return FALSE;
}
if (htab->sdata[1].section == NULL
&& !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
&htab->sdata[1]))
return FALSE;
if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
h, rel))
return FALSE;
if (h != NULL)
{
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
h->non_got_ref = TRUE;
}
break;
case R_PPC_SDAREL16:
if (info->shared)
{
bad_shared_reloc (abfd, r_type);
return FALSE;
}
if (htab->sdata[0].sym == NULL
&& !create_sdata_sym (htab, &htab->sdata[0]))
return FALSE;
if (h != NULL)
{
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
h->non_got_ref = TRUE;
}
break;
case R_PPC_EMB_SDA2REL:
if (info->shared)
{
bad_shared_reloc (abfd, r_type);
return FALSE;
}
if (htab->sdata[1].sym == NULL
&& !create_sdata_sym (htab, &htab->sdata[1]))
return FALSE;
if (h != NULL)
{
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
h->non_got_ref = TRUE;
}
break;
case R_PPC_EMB_SDA21:
case R_PPC_EMB_RELSDA:
if (info->shared)
{
bad_shared_reloc (abfd, r_type);
return FALSE;
}
if (htab->sdata[0].sym == NULL
&& !create_sdata_sym (htab, &htab->sdata[0]))
return FALSE;
if (htab->sdata[1].sym == NULL
&& !create_sdata_sym (htab, &htab->sdata[1]))
return FALSE;
if (h != NULL)
{
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
h->non_got_ref = TRUE;
}
break;
case R_PPC_EMB_NADDR32:
case R_PPC_EMB_NADDR16:
case R_PPC_EMB_NADDR16_LO:
case R_PPC_EMB_NADDR16_HI:
case R_PPC_EMB_NADDR16_HA:
if (info->shared)
{
bad_shared_reloc (abfd, r_type);
return FALSE;
}
if (h != NULL)
h->non_got_ref = TRUE;
break;
case R_PPC_PLT32:
case R_PPC_PLTREL24:
case R_PPC_PLTREL32:
case R_PPC_PLT16_LO:
case R_PPC_PLT16_HI:
case R_PPC_PLT16_HA:
#ifdef DEBUG
fprintf (stderr, "Reloc requires a PLT entry\n");
#endif
/* This symbol requires a procedure linkage table entry. We
actually build the entry in finish_dynamic_symbol,
because this might be a case of linking PIC code without
linking in any dynamic objects, in which case we don't
need to generate a procedure linkage table after all. */
if (h == NULL)
{
/* It does not make sense to have a procedure linkage
table entry for a local symbol. */
(*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
"local symbol"),
abfd,
sec,
(long) rel->r_offset,
ppc_elf_howto_table[r_type]->name);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
else
{
bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
h->needs_plt = 1;
if (!update_plt_info (abfd, h, got2, addend))
return FALSE;
}
break;
/* The following relocations don't need to propagate the
relocation if linking a shared object since they are
section relative. */
case R_PPC_SECTOFF:
case R_PPC_SECTOFF_LO:
case R_PPC_SECTOFF_HI:
case R_PPC_SECTOFF_HA:
case R_PPC_DTPREL16:
case R_PPC_DTPREL16_LO:
case R_PPC_DTPREL16_HI:
case R_PPC_DTPREL16_HA:
case R_PPC_TOC16:
break;
case R_PPC_REL16:
case R_PPC_REL16_LO:
case R_PPC_REL16_HI:
case R_PPC_REL16_HA:
htab->can_use_new_plt = 1;
break;
/* These are just markers. */
case R_PPC_TLS:
case R_PPC_EMB_MRKREF:
case R_PPC_NONE:
case R_PPC_max:
break;
/* These should only appear in dynamic objects. */
case R_PPC_COPY:
case R_PPC_GLOB_DAT:
case R_PPC_JMP_SLOT:
case R_PPC_RELATIVE:
break;
/* These aren't handled yet. We'll report an error later. */
case R_PPC_ADDR30:
case R_PPC_EMB_RELSEC16:
case R_PPC_EMB_RELST_LO:
case R_PPC_EMB_RELST_HI:
case R_PPC_EMB_RELST_HA:
case R_PPC_EMB_BIT_FLD:
break;
/* This refers only to functions defined in the shared library. */
case R_PPC_LOCAL24PC:
if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
htab->plt_type = PLT_OLD;
break;
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_PPC_GNU_VTINHERIT:
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
return FALSE;
break;
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
case R_PPC_GNU_VTENTRY:
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
/* We shouldn't really be seeing these. */
case R_PPC_TPREL32:
if (info->shared)
info->flags |= DF_STATIC_TLS;
goto dodyn;
/* Nor these. */
case R_PPC_DTPMOD32:
case R_PPC_DTPREL32:
goto dodyn;
case R_PPC_TPREL16:
case R_PPC_TPREL16_LO:
case R_PPC_TPREL16_HI:
case R_PPC_TPREL16_HA:
if (info->shared)
info->flags |= DF_STATIC_TLS;
goto dodyn;
case R_PPC_REL32:
if (h == NULL
&& got2 != NULL
&& (sec->flags & SEC_CODE) != 0
&& (info->shared || info->pie)
&& htab->plt_type == PLT_UNSET)
{
/* Old -fPIC gcc code has .long LCTOC1-LCFx just before
the start of a function, which assembles to a REL32
reference to .got2. If we detect one of these, then
force the old PLT layout because the linker cannot
reliably deduce the GOT pointer value needed for
PLT call stubs. */
asection *s;
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
r_symndx);
if (s == got2)
htab->plt_type = PLT_OLD;
}
/* fall through */
case R_PPC_REL24:
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
if (h == NULL)
break;
if (h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
{
htab->plt_type = PLT_OLD;
break;
}
/* fall through */
case R_PPC_ADDR32:
case R_PPC_ADDR24:
case R_PPC_ADDR16:
case R_PPC_ADDR16_LO:
case R_PPC_ADDR16_HI:
case R_PPC_ADDR16_HA:
case R_PPC_ADDR14:
case R_PPC_ADDR14_BRTAKEN:
case R_PPC_ADDR14_BRNTAKEN:
case R_PPC_UADDR32:
case R_PPC_UADDR16:
if (h != NULL && !info->shared)
{
/* We may need a plt entry if the symbol turns out to be
a function defined in a dynamic object. */
if (!update_plt_info (abfd, h, NULL, 0))
return FALSE;
/* We may need a copy reloc too. */
h->non_got_ref = 1;
}
dodyn:
/* If we are creating a shared library, and this is a reloc
against a global symbol, or a non PC relative reloc
against a local symbol, then we need to copy the reloc
into the shared library. However, if we are linking with
-Bsymbolic, we do not need to copy a reloc against a
global symbol which is defined in an object we are
including in the link (i.e., DEF_REGULAR is set). At
this point we have not seen all the input files, so it is
possible that DEF_REGULAR is not set now but will be set
later (it is never cleared). In case of a weak definition,
DEF_REGULAR may be cleared later by a strong definition in
a shared library. We account for that possibility below by
storing information in the dyn_relocs field of the hash
table entry. A similar situation occurs when creating
shared libraries and symbol visibility changes render the
symbol local.
If on the other hand, we are creating an executable, we
may need to keep relocations for symbols satisfied by a
dynamic library if we manage to avoid copy relocs for the
symbol. */
if ((info->shared
&& (MUST_BE_DYN_RELOC (r_type)
|| (h != NULL
&& (! info->symbolic
|| h->root.type == bfd_link_hash_defweak
|| !h->def_regular))))
|| (ELIMINATE_COPY_RELOCS
&& !info->shared
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
|| !h->def_regular)))
{
struct ppc_elf_dyn_relocs *p;
struct ppc_elf_dyn_relocs **head;
#ifdef DEBUG
fprintf (stderr,
"ppc_elf_check_relocs needs to "
"create relocation for %s\n",
(h && h->root.root.string
? h->root.root.string : "<unknown>"));
#endif
if (sreloc == NULL)
{
const char *name;
name = (bfd_elf_string_from_elf_section
(abfd,
elf_elfheader (abfd)->e_shstrndx,
elf_section_data (sec)->rel_hdr.sh_name));
if (name == NULL)
return FALSE;
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
&& strcmp (bfd_get_section_name (abfd, sec),
name + 5) == 0);
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
if (sreloc == NULL)
{
flagword flags;
flags = (SEC_HAS_CONTENTS | SEC_READONLY
| SEC_IN_MEMORY | SEC_LINKER_CREATED
| SEC_ALLOC | SEC_LOAD);
sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
name,
flags);
if (sreloc == NULL
|| ! bfd_set_section_alignment (htab->elf.dynobj,
sreloc, 2))
return FALSE;
}
elf_section_data (sec)->sreloc = sreloc;
}
/* If this is a global symbol, we count the number of
relocations we need for this symbol. */
if (h != NULL)
{
head = &ppc_elf_hash_entry (h)->dyn_relocs;
}
else
{
/* Track dynamic relocs needed for local syms too.
We really need local syms available to do this
easily. Oh well. */
asection *s;
void *vpp;
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
sec, r_symndx);
if (s == NULL)
return FALSE;
vpp = &elf_section_data (s)->local_dynrel;
head = (struct ppc_elf_dyn_relocs **) vpp;
}
p = *head;
if (p == NULL || p->sec != sec)
{
p = bfd_alloc (htab->elf.dynobj, sizeof *p);
if (p == NULL)
return FALSE;
p->next = *head;
*head = p;
p->sec = sec;
p->count = 0;
p->pc_count = 0;
}
p->count += 1;
if (!MUST_BE_DYN_RELOC (r_type))
p->pc_count += 1;
}
break;
}
}
return TRUE;
}
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
{
flagword old_flags;
flagword new_flags;
bfd_boolean error;
if (!is_ppc_elf_target (ibfd->xvec)
|| !is_ppc_elf_target (obfd->xvec))
return TRUE;
/* Check if we have the same endianess. */
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
return FALSE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
if (!elf_flags_init (obfd))
{
/* First call, no flags set. */
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
/* Compatible flags are ok. */
else if (new_flags == old_flags)
;
/* Incompatible flags. */
else
{
/* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
to be linked with either. */
error = FALSE;
if ((new_flags & EF_PPC_RELOCATABLE) != 0
&& (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
{
error = TRUE;
(*_bfd_error_handler)
(_("%B: compiled with -mrelocatable and linked with "
"modules compiled normally"), ibfd);
}
else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
&& (old_flags & EF_PPC_RELOCATABLE) != 0)
{
error = TRUE;
(*_bfd_error_handler)
(_("%B: compiled normally and linked with "
"modules compiled with -mrelocatable"), ibfd);
}
/* The output is -mrelocatable-lib iff both the input files are. */
if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
/* The output is -mrelocatable iff it can't be -mrelocatable-lib,
but each input file is either -mrelocatable or -mrelocatable-lib. */
if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
&& (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
&& (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
/* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
any module uses it. */
elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
/* Warn about any other mismatches. */
if (new_flags != old_flags)
{
error = TRUE;
(*_bfd_error_handler)
(_("%B: uses different e_flags (0x%lx) fields "
"than previous modules (0x%lx)"),
ibfd, (long) new_flags, (long) old_flags);
}
if (error)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
}
return TRUE;
}
/* Choose which PLT scheme to use, and set .plt flags appropriately.
Returns -1 on error, 0 for old PLT, 1 for new PLT. */
int
ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info,
int force_old_plt,
int emit_stub_syms)
{
struct ppc_elf_link_hash_table *htab;
flagword flags;
htab = ppc_elf_hash_table (info);
if (htab->plt_type == PLT_UNSET)
htab->plt_type = (force_old_plt || !htab->can_use_new_plt
? PLT_OLD : PLT_NEW);
htab->emit_stub_syms = emit_stub_syms;
BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
if (htab->plt_type == PLT_NEW)
{
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
/* The new PLT is a loaded section. */
if (htab->plt != NULL
&& !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
return -1;
/* The new GOT is not executable. */
if (htab->got != NULL
&& !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
return -1;
}
else
{
/* Stop an unused .glink section from affecting .text alignment. */
if (htab->glink != NULL
&& !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
return -1;
}
return htab->plt_type == PLT_NEW;
}
/* Return the section that should be marked against GC for a given
relocation. */
static asection *
ppc_elf_gc_mark_hook (asection *sec,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
Elf_Internal_Rela *rel,
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
if (h != NULL)
{
switch (ELF32_R_TYPE (rel->r_info))
{
case R_PPC_GNU_VTINHERIT:
case R_PPC_GNU_VTENTRY:
break;
default:
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
return h->root.u.def.section;
case bfd_link_hash_common:
return h->root.u.c.p->section;
default:
break;
}
}
}
else
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
return NULL;
}
/* Update the got, plt and dynamic reloc reference counts for the
section being removed. */
static bfd_boolean
ppc_elf_gc_sweep_hook (bfd *abfd,
struct bfd_link_info *info,
asection *sec,
const Elf_Internal_Rela *relocs)
{
struct ppc_elf_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
asection *got2;
if ((sec->flags & SEC_ALLOC) == 0)
return TRUE;
elf_section_data (sec)->local_dynrel = NULL;
htab = ppc_elf_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
local_got_refcounts = elf_local_got_refcounts (abfd);
got2 = bfd_get_section_by_name (abfd, ".got2");
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
{
unsigned long r_symndx;
enum elf_ppc_reloc_type r_type;
struct elf_link_hash_entry *h = NULL;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
struct ppc_elf_dyn_relocs **pp, *p;
struct ppc_elf_link_hash_entry *eh;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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;
eh = (struct ppc_elf_link_hash_entry *) h;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
if (p->sec == sec)
{
/* Everything must go for SEC. */
*pp = p->next;
break;
}
}
r_type = ELF32_R_TYPE (rel->r_info);
switch (r_type)
{
case R_PPC_GOT_TLSLD16:
case R_PPC_GOT_TLSLD16_LO:
case R_PPC_GOT_TLSLD16_HI:
case R_PPC_GOT_TLSLD16_HA:
htab->tlsld_got.refcount -= 1;
/* Fall thru */
case R_PPC_GOT_TLSGD16:
case R_PPC_GOT_TLSGD16_LO:
case R_PPC_GOT_TLSGD16_HI:
case R_PPC_GOT_TLSGD16_HA:
case R_PPC_GOT_TPREL16:
case R_PPC_GOT_TPREL16_LO:
case R_PPC_GOT_TPREL16_HI:
case R_PPC_GOT_TPREL16_HA:
case R_PPC_GOT_DTPREL16:
case R_PPC_GOT_DTPREL16_LO:
case R_PPC_GOT_DTPREL16_HI:
case R_PPC_GOT_DTPREL16_HA:
case R_PPC_GOT16:
case R_PPC_GOT16_LO:
case R_PPC_GOT16_HI:
case R_PPC_GOT16_HA:
if (h != NULL)
{
if (h->got.refcount > 0)
h->got.refcount--;
}
else if (local_got_refcounts != NULL)
{
if (local_got_refcounts[r_symndx] > 0)
local_got_refcounts[r_symndx]--;
}
break;
case R_PPC_REL24:
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
case R_PPC_REL32:
if (h == NULL || h == htab->elf.hgot)
break;
/* Fall thru */
case R_PPC_ADDR32:
case R_PPC_ADDR24:
case R_PPC_ADDR16:
case R_PPC_ADDR16_LO:
case R_PPC_ADDR16_HI:
case R_PPC_ADDR16_HA:
case R_PPC_ADDR14:
case R_PPC_ADDR14_BRTAKEN:
case R_PPC_ADDR14_BRNTAKEN:
case R_PPC_UADDR32:
case R_PPC_UADDR16:
if (info->shared)
break;
case R_PPC_PLT32:
case R_PPC_PLTREL24:
case R_PPC_PLTREL32:
case R_PPC_PLT16_LO:
case R_PPC_PLT16_HI:
case R_PPC_PLT16_HA:
if (h != NULL)
{
bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
struct plt_entry *ent = find_plt_ent (h, got2, addend);
if (ent->plt.refcount > 0)
ent->plt.refcount -= 1;
}
break;
default:
break;
}
}
return TRUE;
}
/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
asection *
ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
{
struct ppc_elf_link_hash_table *htab;
htab = ppc_elf_hash_table (info);
if (htab->plt_type == PLT_NEW
&& htab->plt != NULL
&& htab->plt->output_section != NULL)
{
elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
}
htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
FALSE, FALSE, TRUE);
return _bfd_elf_tls_setup (obfd, info);
}
/* Run through all the TLS relocs looking for optimization
opportunities. */
bfd_boolean
ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
bfd *ibfd;
asection *sec;
struct ppc_elf_link_hash_table *htab;
if (info->relocatable || info->shared)
return TRUE;
htab = ppc_elf_hash_table (info);
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
Elf_Internal_Sym *locsyms = NULL;
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
{
Elf_Internal_Rela *relstart, *rel, *relend;
int expecting_tls_get_addr;
/* Read the relocations. */
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
info->keep_memory);
if (relstart == NULL)
return FALSE;
expecting_tls_get_addr = 0;
relend = relstart + sec->reloc_count;
for (rel = relstart; rel < relend; rel++)
{
enum elf_ppc_reloc_type r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h = NULL;
char *tls_mask;
char tls_set, tls_clear;
bfd_boolean is_local;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
struct elf_link_hash_entry **sym_hashes;
sym_hashes = elf_sym_hashes (ibfd);
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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;
}
is_local = FALSE;
if (h == NULL
|| !h->def_dynamic)
is_local = TRUE;
r_type = ELF32_R_TYPE (rel->r_info);
switch (r_type)
{
case R_PPC_GOT_TLSLD16:
case R_PPC_GOT_TLSLD16_LO:
case R_PPC_GOT_TLSLD16_HI:
case R_PPC_GOT_TLSLD16_HA:
/* These relocs should never be against a symbol
defined in a shared lib. Leave them alone if
that turns out to be the case. */
expecting_tls_get_addr = 0;
htab->tlsld_got.refcount -= 1;
if (!is_local)
continue;
/* LD -> LE */
tls_set = 0;
tls_clear = TLS_LD;
expecting_tls_get_addr = 1;
break;
case R_PPC_GOT_TLSGD16:
case R_PPC_GOT_TLSGD16_LO:
case R_PPC_GOT_TLSGD16_HI:
case R_PPC_GOT_TLSGD16_HA:
if (is_local)
/* GD -> LE */
tls_set = 0;
else
/* GD -> IE */
tls_set = TLS_TLS | TLS_TPRELGD;
tls_clear = TLS_GD;
expecting_tls_get_addr = 1;
break;
case R_PPC_GOT_TPREL16:
case R_PPC_GOT_TPREL16_LO:
case R_PPC_GOT_TPREL16_HI:
case R_PPC_GOT_TPREL16_HA:
expecting_tls_get_addr = 0;
if (is_local)
{
/* IE -> LE */
tls_set = 0;
tls_clear = TLS_TPREL;
break;
}
else
continue;
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
case R_PPC_REL24:
if (expecting_tls_get_addr
&& h != NULL
&& h == htab->tls_get_addr)
{
struct plt_entry *ent = find_plt_ent (h, NULL, 0);
if (ent != NULL && ent->plt.refcount > 0)
ent->plt.refcount -= 1;
}
expecting_tls_get_addr = 0;
continue;
default:
expecting_tls_get_addr = 0;
continue;
}
if (h != NULL)
{
if (tls_set == 0)
{
/* We managed to get rid of a got entry. */
if (h->got.refcount > 0)
h->got.refcount -= 1;
}
tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
}
else
{
Elf_Internal_Sym *sym;
bfd_signed_vma *lgot_refs;
char *lgot_masks;
if (locsyms == NULL)
{
locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
if (locsyms == NULL)
locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
symtab_hdr->sh_info,
0, NULL, NULL, NULL);
if (locsyms == NULL)
{
if (elf_section_data (sec)->relocs != relstart)
free (relstart);
return FALSE;
}
}
sym = locsyms + r_symndx;
lgot_refs = elf_local_got_refcounts (ibfd);
if (lgot_refs == NULL)
abort ();
if (tls_set == 0)
{
/* We managed to get rid of a got entry. */
if (lgot_refs[r_symndx] > 0)
lgot_refs[r_symndx] -= 1;
}
lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
tls_mask = &lgot_masks[r_symndx];
}
*tls_mask |= tls_set;
*tls_mask &= ~tls_clear;
}
if (elf_section_data (sec)->relocs != relstart)
free (relstart);
}
if (locsyms != NULL
&& (symtab_hdr->contents != (unsigned char *) locsyms))
{
if (!info->keep_memory)
free (locsyms);
else
symtab_hdr->contents = (unsigned char *) locsyms;
}
}
return TRUE;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
change the definition to something the rest of the link can
understand. */
static bfd_boolean
ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *h)
{
struct ppc_elf_link_hash_table *htab;
asection *s;
unsigned int power_of_two;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
h->root.root.string);
#endif
/* Make sure we know what is going on here. */
htab = ppc_elf_hash_table (info);
BFD_ASSERT (htab->elf.dynobj != NULL
&& (h->needs_plt
|| h->u.weakdef != NULL
|| (h->def_dynamic
&& h->ref_regular
&& !h->def_regular)));
/* Deal with function syms. */
if (h->type == STT_FUNC
|| h->needs_plt)
{
/* Clear procedure linkage table information for any symbol that
won't need a .plt entry. */
struct plt_entry *ent;
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
if (ent->plt.refcount > 0)
break;
if (ent == NULL
|| SYMBOL_CALLS_LOCAL (info, h)
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak))
{
/* A PLT entry is not required/allowed when:
1. We are not using ld.so; because then the PLT entry
can't be set up, so we can't use one. In this case,
ppc_elf_adjust_dynamic_symbol won't even be called.
2. GC has rendered the entry unused.
3. We know for certain that a call to this symbol
will go to this object, or will remain undefined. */
h->plt.plist = NULL;
h->needs_plt = 0;
}
return TRUE;
}
else
h->plt.plist = NULL;
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
if (h->u.weakdef != NULL)
{
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->u.weakdef->root.u.def.section;
h->root.u.def.value = h->u.weakdef->root.u.def.value;
if (ELIMINATE_COPY_RELOCS)
h->non_got_ref = h->u.weakdef->non_got_ref;
return TRUE;
}
/* This is a reference to a symbol defined by a dynamic object which
is not a function. */
/* If we are creating a shared library, we must presume that the
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
if (info->shared)
return TRUE;
/* If there are no references to this symbol that do not use the
GOT, we don't need to generate a copy reloc. */
if (!h->non_got_ref)
return TRUE;
/* If we didn't find any dynamic relocs in read-only sections, then we'll
be keeping the dynamic relocs and avoiding the copy reloc. We can't
do this if there are any small data relocations. */
if (ELIMINATE_COPY_RELOCS
&& !ppc_elf_hash_entry (h)->has_sda_refs)
{
struct ppc_elf_dyn_relocs *p;
for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
{
s = p->sec->output_section;
if (s != NULL && (s->flags & SEC_READONLY) != 0)
break;
}
if (p == NULL)
{
h->non_got_ref = 0;
return TRUE;
}
}
if (h->size == 0)
{
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
h->root.root.string);
return TRUE;
}
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
object will contain position independent code, so all references
from the dynamic object to this symbol will go through the global
offset table. The dynamic linker will use the .dynsym entry to
determine the address it must put in the global offset table, so
both the dynamic object and the regular object will refer to the
same memory location for the variable.
Of course, if the symbol is referenced using SDAREL relocs, we
must instead allocate it in .sbss. */
if (ppc_elf_hash_entry (h)->has_sda_refs)
s = htab->dynsbss;
else
s = htab->dynbss;
BFD_ASSERT (s != NULL);
/* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
copy the initial value out of the dynamic object and into the
runtime process image. We need to remember the offset into the
.rela.bss section we are going to use. */
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
asection *srel;
if (ppc_elf_hash_entry (h)->has_sda_refs)
srel = htab->relsbss;
else
srel = htab->relbss;
BFD_ASSERT (srel != NULL);
srel->size += sizeof (Elf32_External_Rela);
h->needs_copy = 1;
}
/* We need to figure out the alignment required for this symbol. I
have no idea how ELF linkers handle this. */
power_of_two = bfd_log2 (h->size);
if (power_of_two > 4)
power_of_two = 4;
/* Apply the required alignment. */
s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
{
if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
return FALSE;
}
/* Define the symbol as being at this point in the section. */
h->root.u.def.section = s;
h->root.u.def.value = s->size;
/* Increment the section size to make room for the symbol. */
s->size += h->size;
return TRUE;
}
/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
specifying the addend on the plt relocation. For -fpic code, the sym
is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
xxxxxxxx.got2.plt_pic32.<callee>. */
static bfd_boolean
add_stub_sym (struct plt_entry *ent,
struct elf_link_hash_entry *h,
struct bfd_link_info *info)
{
struct elf_link_hash_entry *sh;
size_t len1, len2, len3;
char *name;
const char *stub;
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
if (info->shared || info->pie)
stub = ".plt_pic32.";
else
stub = ".plt_call32.";
len1 = strlen (h->root.root.string);
len2 = strlen (stub);
len3 = 0;
if (ent->sec)
len3 = strlen (ent->sec->name);
name = bfd_malloc (len1 + len2 + len3 + 9);
if (name == NULL)
return FALSE;
sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
if (ent->sec)
memcpy (name + 8, ent->sec->name, len3);
memcpy (name + 8 + len3, stub, len2);
memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
if (sh == NULL)
return FALSE;
if (sh->root.type == bfd_link_hash_new)
{
sh->root.type = bfd_link_hash_defined;
sh->root.u.def.section = htab->glink;
sh->root.u.def.value = ent->glink_offset;
sh->ref_regular = 1;
sh->def_regular = 1;
sh->ref_regular_nonweak = 1;
sh->forced_local = 1;
sh->non_elf = 0;
}
return TRUE;
}
/* Allocate NEED contiguous space in .got, and return the offset.
Handles allocation of the got header when crossing 32k. */
static bfd_vma
allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
{
bfd_vma where;
unsigned int max_before_header;
if (htab->plt_type == PLT_VXWORKS)
{
where = htab->got->size;
htab->got->size += need;
}
else
{
max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
if (need <= htab->got_gap)
{
where = max_before_header - htab->got_gap;
htab->got_gap -= need;
}
else
{
if (htab->got->size + need > max_before_header
&& htab->got->size <= max_before_header)
{
htab->got_gap = max_before_header - htab->got->size;
htab->got->size = max_before_header + htab->got_header_size;
}
where = htab->got->size;
htab->got->size += need;
}
}
return where;
}
/* Allocate space in associated reloc sections for dynamic relocs. */
static bfd_boolean
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
struct bfd_link_info *info = inf;
struct ppc_elf_link_hash_entry *eh;
struct ppc_elf_link_hash_table *htab;
struct ppc_elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
if (h->root.type == bfd_link_hash_warning)
/* When warning symbols are created, they **replace** the "real"
entry in the hash table, thus we never get to see the real
symbol in a hash traversal. So look at it now. */
h = (struct elf_link_hash_entry *) h->root.u.i.link;
htab = ppc_elf_hash_table (info);
if (htab->elf.dynamic_sections_created)
{
struct plt_entry *ent;
bfd_boolean doneone = FALSE;
bfd_vma plt_offset = 0, glink_offset = 0;
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
if (ent->plt.refcount > 0)
{
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1
&& !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
if (info->shared
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->plt;
if (htab->plt_type == PLT_NEW)
{
if (!doneone)
{
plt_offset = s->size;
s->size += 4;
}
ent->plt.offset = plt_offset;
s = htab->glink;
if (!doneone || info->shared || info->pie)
{
glink_offset = s->size;
s->size += GLINK_ENTRY_SIZE;
}
if (!doneone
&& !info->shared
&& !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = glink_offset;
}
ent->glink_offset = glink_offset;
if (htab->emit_stub_syms
&& !add_stub_sym (ent, h, info))
return FALSE;
}
else
{
if (!doneone)
{
/* If this is the first .plt entry, make room
for the special first entry. */
if (s->size == 0)
s->size += htab->plt_initial_entry_size;
/* The PowerPC PLT is actually composed of two
parts, the first part is 2 words (for a load
and a jump), and then there is a remaining
word available at the end. */
plt_offset = (htab->plt_initial_entry_size
+ (htab->plt_slot_size
* ((s->size
- htab->plt_initial_entry_size)
/ htab->plt_entry_size)));
/* If this symbol is not defined in a regular
file, and we are not generating a shared
library, then set the symbol to this location
in the .plt. This is required to make
function pointers compare as equal between
the normal executable and the shared library. */
if (! info->shared
&& !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = plt_offset;
}
/* Make room for this entry. */
s->size += htab->plt_entry_size;
/* After the 8192nd entry, room for two entries
is allocated. */
if (htab->plt_type == PLT_OLD
&& (s->size - htab->plt_initial_entry_size)
/ htab->plt_entry_size
> PLT_NUM_SINGLE_ENTRIES)
s->size += htab->plt_entry_size;
}
ent->plt.offset = plt_offset;
}
/* We also need to make an entry in the .rela.plt section. */
if (!doneone)
{
htab->relplt->size += sizeof (Elf32_External_Rela);
if (htab->plt_type == PLT_VXWORKS)
{
/* Allocate space for the unloaded relocations. */
if (!info->shared)
{
if (ent->plt.offset
== (bfd_vma) htab->plt_initial_entry_size)
{
htab->srelplt2->size
+= sizeof (Elf32_External_Rela)
* VXWORKS_PLTRESOLVE_RELOCS;
}
htab->srelplt2->size
+= sizeof (Elf32_External_Rela)
* VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
}
/* Every PLT entry has an associated GOT entry in
.got.plt. */
htab->sgotplt->size += 4;
}
doneone = TRUE;
}
}
else
ent->plt.offset = (bfd_vma) -1;
if (!doneone)
{
h->plt.plist = NULL;
h->needs_plt = 0;
}
}
}
else
{
h->plt.plist = NULL;
h->needs_plt = 0;
}
eh = (struct ppc_elf_link_hash_entry *) h;
if (eh->elf.got.refcount > 0)
{
/* Make sure this symbol is output as a dynamic symbol. */
if (eh->elf.dynindx == -1
&& !eh->elf.forced_local)
{
if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
return FALSE;
}
if (eh->tls_mask == (TLS_TLS | TLS_LD)
&& !eh->elf.def_dynamic)
/* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
eh->elf.got.offset = (bfd_vma) -1;
else
{
bfd_boolean dyn;
unsigned int need = 0;
if ((eh->tls_mask & TLS_TLS) != 0)
{
if ((eh->tls_mask & TLS_LD) != 0)
need += 8;
if ((eh->tls_mask & TLS_GD) != 0)
need += 8;
if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
need += 4;
if ((eh->tls_mask & TLS_DTPREL) != 0)
need += 4;
}
else
need += 4;
eh->elf.got.offset = allocate_got (htab, need);
dyn = htab->elf.dynamic_sections_created;
if ((info->shared
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
&& (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
|| eh->elf.root.type != bfd_link_hash_undefweak))
{
/* All the entries we allocated need relocs.
Except LD only needs one. */
if ((eh->tls_mask & TLS_LD) != 0)
need -= 4;
htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
}
}
}
else
eh->elf.got.offset = (bfd_vma) -1;
if (eh->dyn_relocs == NULL)
return TRUE;
/* In the shared -Bsymbolic case, discard space allocated for
dynamic pc-relative relocs against symbols which turn out to be
defined in regular objects. For the normal shared case, discard
space for relocs that have become local due to symbol visibility
changes. */
if (info->shared)
{
/* Relocs that use pc_count are those that appear on a call insn,
or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
generated via assembly. We want calls to protected symbols to
resolve directly to the function rather than going via the plt.
If people want function pointer comparisons to work as expected
then they should avoid writing weird assembly. */
if (SYMBOL_CALLS_LOCAL (info, h))
{
struct ppc_elf_dyn_relocs **pp;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
{
p->count -= p->pc_count;
p->pc_count = 0;
if (p->count == 0)
*pp = p->next;
else
pp = &p->next;
}
}
/* Also discard relocs on undefined weak syms with non-default
visibility. */
if (eh->dyn_relocs != NULL
&& h->root.type == bfd_link_hash_undefweak)
{
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
eh->dyn_relocs = NULL;
/* Make sure undefined weak symbols are output as a dynamic
symbol in PIEs. */
else if (h->dynindx == -1
&& !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
}
}
else if (ELIMINATE_COPY_RELOCS)
{
/* For the non-shared case, discard space for relocs against
symbols which turn out to need copy relocs or are not
dynamic. */
if (!h->non_got_ref
&& h->def_dynamic
&& !h->def_regular)
{
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
&& !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
/* If that succeeded, we know we'll be keeping all the
relocs. */
if (h->dynindx != -1)
goto keep;
}
eh->dyn_relocs = NULL;
keep: ;
}
/* Finally, allocate space. */
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
sreloc->size += p->count * sizeof (Elf32_External_Rela);
}
return TRUE;
}
/* Find any dynamic relocs that apply to read-only sections. */
static bfd_boolean
readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
{
struct ppc_elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
{
asection *s = p->sec->output_section;
if (s != NULL
&& ((s->flags & (SEC_READONLY | SEC_ALLOC))
== (SEC_READONLY | SEC_ALLOC)))
{
((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
/* Not an error, just cut short the traversal. */
return FALSE;
}
}
return TRUE;
}
/* Set the sizes of the dynamic sections. */
static bfd_boolean
ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
struct ppc_elf_link_hash_table *htab;
asection *s;
bfd_boolean relocs;
bfd *ibfd;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
#endif
htab = ppc_elf_hash_table (info);
BFD_ASSERT (htab->elf.dynobj != NULL);
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (info->executable)
{
s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
BFD_ASSERT (s != NULL);
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
if (htab->plt_type == PLT_OLD)
htab->got_header_size = 16;
else if (htab->plt_type == PLT_NEW)
htab->got_header_size = 12;
/* Set up .got offsets for local syms, and space for local dynamic
relocs. */
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
char *lgot_masks;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
if (!is_ppc_elf_target (ibfd->xvec))
continue;
for (s = ibfd->sections; s != NULL; s = s->next)
{
struct ppc_elf_dyn_relocs *p;
for (p = ((struct ppc_elf_dyn_relocs *)
elf_section_data (s)->local_dynrel);
p != NULL;
p = p->next)
{
if (!bfd_is_abs_section (p->sec)
&& bfd_is_abs_section (p->sec->output_section))
{
/* Input section has been discarded, either because
it is a copy of a linkonce section or due to
linker script /DISCARD/, so we'll be discarding
the relocs too. */
}
else if (p->count != 0)
{
elf_section_data (p->sec)->sreloc->size
+= p->count * sizeof (Elf32_External_Rela);
if ((p->sec->output_section->flags
& (SEC_READONLY | SEC_ALLOC))
== (SEC_READONLY | SEC_ALLOC))
info->flags |= DF_TEXTREL;
}
}
}
local_got = elf_local_got_refcounts (ibfd);
if (!local_got)
continue;
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
lgot_masks = (char *) end_local_got;
for (; local_got < end_local_got; ++local_got, ++lgot_masks)
if (*local_got > 0)
{
if (*lgot_masks == (TLS_TLS | TLS_LD))
{
/* If just an LD reloc, we'll just use
htab->tlsld_got.offset. */
htab->tlsld_got.refcount += 1;
*local_got = (bfd_vma) -1;
}
else
{
unsigned int need = 0;
if ((*lgot_masks & TLS_TLS) != 0)
{
if ((*lgot_masks & TLS_GD) != 0)
need += 8;
if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
need += 4;
if ((*lgot_masks & TLS_DTPREL) != 0)
need += 4;
}
else
need += 4;
*local_got = allocate_got (htab, need);
if (info->shared)
htab->relgot->size += (need
* (sizeof (Elf32_External_Rela) / 4));
}
}
else
*local_got = (bfd_vma) -1;
}
if (htab->tlsld_got.refcount > 0)
{
htab->tlsld_got.offset = allocate_got (htab, 8);
if (info->shared)
htab->relgot->size += sizeof (Elf32_External_Rela);
}
else
htab->tlsld_got.offset = (bfd_vma) -1;
if (htab->is_vxworks)
{
/* Mark the GOT and PLT symbols as having relocations; they might
not, but we won't know for sure until we build the GOT in
finish_dynamic_symbol. */
if (htab->elf.hgot)
htab->elf.hgot->indx = -2;
if (htab->elf.hplt)
{
htab->elf.hplt->indx = -2;
if (htab->plt->flags & SEC_CODE)
htab->elf.hplt->type = STT_FUNC;
}
}
/* Allocate space for global sym dynamic relocs. */
elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
{
unsigned int g_o_t = 32768;
/* If we haven't allocated the header, do so now. When we get here,
for old plt/got the got size will be 0 to 32764 (not allocated),
or 32780 to 65536 (header allocated). For new plt/got, the
corresponding ranges are 0 to 32768 and 32780 to 65536. */
if (htab->got->size <= 32768)
{
g_o_t = htab->got->size;
if (htab->plt_type == PLT_OLD)
g_o_t += 4;
htab->got->size += htab->got_header_size;
}
htab->elf.hgot->root.u.def.value = g_o_t;
}
if (htab->glink != NULL && htab->glink->size != 0)
{
htab->glink_pltresolve = htab->glink->size;
/* Space for the branch table. */
htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
/* Pad out to align the start of PLTresolve. */
htab->glink->size += -htab->glink->size & 15;
htab->glink->size += GLINK_PLTRESOLVE;
if (htab->emit_stub_syms)
{
struct elf_link_hash_entry *sh;
sh = elf_link_hash_lookup (&htab->elf, "__glink",
TRUE, FALSE, FALSE);
if (sh == NULL)
return FALSE;
if (sh->root.type == bfd_link_hash_new)
{
sh->root.type = bfd_link_hash_defined;
sh->root.u.def.section = htab->glink;
sh->root.u.def.value = htab->glink_pltresolve;
sh->ref_regular = 1;
sh->def_regular = 1;
sh->ref_regular_nonweak = 1;
sh->forced_local = 1;
sh->non_elf = 0;
}
sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
TRUE, FALSE, FALSE);
if (sh == NULL)
return FALSE;
if (sh->root.type == bfd_link_hash_new)
{
sh->root.type = bfd_link_hash_defined;
sh->root.u.def.section = htab->glink;
sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
sh->ref_regular = 1;
sh->def_regular = 1;
sh->ref_regular_nonweak = 1;
sh->forced_local = 1;
sh->non_elf = 0;
}
}
}
/* We've now determined the sizes of the various dynamic sections.
Allocate memory for them. */
relocs = FALSE;
for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
{
bfd_boolean strip_section = TRUE;
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
if (s == htab->plt
|| s == htab->glink
|| s == htab->got
|| s == htab->sgotplt
|| s == htab->sbss
|| s == htab->dynbss
|| s == htab->dynsbss)
{
/* We'd like to strip these sections if they aren't needed, but if
we've exported dynamic symbols from them we must leave them.
It's too late to tell BFD to get rid of the symbols. */
if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
strip_section = FALSE;
/* Strip this section if we don't need it; see the
comment below. */
}
else if (s == htab->sdata[0].section
|| s == htab->sdata[1].section)
{
/* Strip these too. */
}
else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
{
if (s->size != 0)
{
/* Remember whether there are any relocation sections. */
relocs = TRUE;
/* We use the reloc_count field as a counter if we need
to copy relocs into the output file. */
s->reloc_count = 0;
}
}
else
{
/* It's not one of our sections, so don't allocate space. */
continue;
}
if (s->size == 0 && strip_section)
{
/* If we don't need this section, strip it from the
output file. This is mostly to handle .rela.bss and
.rela.plt. We must create both sections in
create_dynamic_sections, because they must be created
before the linker maps input sections to output
sections. The linker does that before
adjust_dynamic_symbol is called, and it is that
function which decides whether anything needs to go
into these sections. */
s->flags |= SEC_EXCLUDE;
continue;
}
if ((s->flags & SEC_HAS_CONTENTS) == 0)
continue;
/* Allocate memory for the section contents. */
s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
if (s->contents == NULL)
return FALSE;
}
if (htab->elf.dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
values later, in ppc_elf_finish_dynamic_sections, but we
must add the entries now so that we get the correct size for
the .dynamic section. The DT_DEBUG entry is filled in by the
dynamic linker and used by the debugger. */
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
}
if (htab->plt != NULL && htab->plt->size != 0)
{
if (!add_dynamic_entry (DT_PLTGOT, 0)
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|| !add_dynamic_entry (DT_JMPREL, 0))
return FALSE;
}
if (htab->glink != NULL && htab->glink->size != 0)
{
if (!add_dynamic_entry (DT_PPC_GOT, 0))
return FALSE;
}
if (relocs)
{
if (!add_dynamic_entry (DT_RELA, 0)
|| !add_dynamic_entry (DT_RELASZ, 0)
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
return FALSE;
}
/* If any dynamic relocs apply to a read-only section, then we
need a DT_TEXTREL entry. */
if ((info->flags & DF_TEXTREL) == 0)
elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
info);
if ((info->flags & DF_TEXTREL) != 0)
{
if (!add_dynamic_entry (DT_TEXTREL, 0))
return FALSE;
}
}
#undef add_dynamic_entry
return TRUE;
}
#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
static const int shared_stub_entry[] =
{
0x7c0802a6, /* mflr 0 */
0x429f0005, /* bcl 20, 31, .Lxxx */
0x7d6802a6, /* mflr 11 */
0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
0x7c0803a6, /* mtlr 0 */
0x7d6903a6, /* mtctr 11 */
0x4e800420, /* bctr */
};
static const int stub_entry[] =
{
0x3d600000, /* lis 11,xxx@ha */
0x396b0000, /* addi 11,11,xxx@l */
0x7d6903a6, /* mtctr 11 */
0x4e800420, /* bctr */
};
static bfd_boolean
ppc_elf_relax_section (bfd *abfd,
asection *isec,
struct bfd_link_info *link_info,
bfd_boolean *again)
{
struct one_fixup
{
struct one_fixup *next;
asection *tsec;
bfd_vma toff;
bfd_vma trampoff;
};
Elf_Internal_Shdr *symtab_hdr;
bfd_byte *contents = NULL;
Elf_Internal_Sym *isymbuf = NULL;
Elf_Internal_Rela *internal_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
struct one_fixup *fixups = NULL;
bfd_boolean changed;
struct ppc_elf_link_hash_table *htab;
bfd_size_type trampoff;
asection *got2;
*again = FALSE;
/* Nothing to do if there are no relocations, and no need to do
anything with non-alloc sections. */
if ((isec->flags & SEC_ALLOC) == 0
|| (isec->flags & SEC_RELOC) == 0
|| isec->reloc_count == 0)
return TRUE;
trampoff = (isec->size + 3) & (bfd_vma) -4;
/* Space for a branch around any trampolines. */
trampoff += 4;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
/* Get a copy of the native relocations. */
internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
link_info->keep_memory);
if (internal_relocs == NULL)
goto error_return;
htab = ppc_elf_hash_table (link_info);
got2 = bfd_get_section_by_name (abfd, ".got2");
irelend = internal_relocs + isec->reloc_count;
for (irel = internal_relocs; irel < irelend; irel++)
{
unsigned long r_type = ELF32_R_TYPE (irel->r_info);
bfd_vma symaddr, reladdr, toff, roff;
asection *tsec;
struct one_fixup *f;
size_t insn_offset = 0;
bfd_vma max_branch_offset, val;
bfd_byte *hit_addr;
unsigned long t0;
unsigned char sym_type;
switch (r_type)
{
case R_PPC_REL24:
case R_PPC_LOCAL24PC:
case R_PPC_PLTREL24:
max_branch_offset = 1 << 25;
break;
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
max_branch_offset = 1 << 15;
break;
default:
continue;
}
/* Get the value of the symbol referred to by the reloc. */
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
{
/* A local symbol. */
Elf_Internal_Sym *isym;
/* Read this BFD's local symbols. */
if (isymbuf == NULL)
{
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
if (isymbuf == NULL)
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
symtab_hdr->sh_info, 0,
NULL, NULL, NULL);
if (isymbuf == 0)
goto error_return;
}
isym = isymbuf + ELF32_R_SYM (irel->r_info);
if (isym->st_shndx == SHN_UNDEF)
continue; /* We can't do anything with undefined symbols. */
else if (isym->st_shndx == SHN_ABS)
tsec = bfd_abs_section_ptr;
else if (isym->st_shndx == SHN_COMMON)
tsec = bfd_com_section_ptr;
else
tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
toff = isym->st_value;
sym_type = ELF_ST_TYPE (isym->st_info);
}
else
{
/* Global symbol handling. */
unsigned long indx;
struct elf_link_hash_entry *h;
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
h = elf_sym_hashes (abfd)[indx];
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;
tsec = NULL;
toff = 0;
if (r_type == R_PPC_PLTREL24
&& htab->plt != NULL)
{
struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
if (ent != NULL)
{
if (htab->plt_type == PLT_NEW)
{
tsec = htab->glink;
toff = ent->glink_offset;
}
else
{
tsec = htab->plt;
toff = ent->plt.offset;
}
}
}
if (tsec != NULL)
;
else if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
tsec = h->root.u.def.section;
toff = h->root.u.def.value;
}
else
continue;
sym_type = h->type;
}
/* If the branch and target are in the same section, you have
no hope of adding stubs. We'll error out later should the
branch overflow. */
if (tsec == isec)
continue;
/* There probably isn't any reason to handle symbols in
SEC_MERGE sections; SEC_MERGE doesn't seem a likely
attribute for a code section, and we are only looking at
branches. However, implement it correctly here as a
reference for other target relax_section functions. */
if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
{
/* At this stage in linking, no SEC_MERGE symbol has been
adjusted, so all references to such symbols need to be
passed through _bfd_merged_section_offset. (Later, in
relocate_section, all SEC_MERGE symbols *except* for
section symbols have been adjusted.)
gas may reduce relocations against symbols in SEC_MERGE
sections to a relocation against the section symbol when
the original addend was zero. When the reloc is against
a section symbol we should include the addend in the
offset passed to _bfd_merged_section_offset, since the
location of interest is the original symbol. On the
other hand, an access to "sym+addend" where "sym" is not
a section symbol should not include the addend; Such an
access is presumed to be an offset from "sym"; The
location of interest is just "sym". */
if (sym_type == STT_SECTION)
toff += irel->r_addend;
toff = _bfd_merged_section_offset (abfd, &tsec,
elf_section_data (tsec)->sec_info,
toff);
if (sym_type != STT_SECTION)
toff += irel->r_addend;
}
/* PLTREL24 addends are special. */
else if (r_type != R_PPC_PLTREL24)
toff += irel->r_addend;
symaddr = tsec->output_section->vma + tsec->output_offset + toff;
roff = irel->r_offset;
reladdr = isec->output_section->vma + isec->output_offset + roff;
/* If the branch is in range, no need to do anything. */
if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
continue;
/* Look for an existing fixup to this address. */
for (f = fixups; f ; f = f->next)
if (f->tsec == tsec && f->toff == toff)
break;
if (f == NULL)
{
size_t size;
unsigned long stub_rtype;
val = trampoff - roff;
if (val >= max_branch_offset)
/* Oh dear, we can't reach a trampoline. Don't try to add
one. We'll report an error later. */
continue;
if (link_info->shared)
{
size = 4 * ARRAY_SIZE (shared_stub_entry);
insn_offset = 12;
stub_rtype = R_PPC_RELAX32PC;
}
else
{
size = 4 * ARRAY_SIZE (stub_entry);
insn_offset = 0;
stub_rtype = R_PPC_RELAX32;
}
if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
!= R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
abort ();
if (tsec == htab->plt
|| tsec == htab->glink)
stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
/* Hijack the old relocation. Since we need two
relocations for this use a "composite" reloc. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
stub_rtype);
irel->r_offset = trampoff + insn_offset;
/* Record the fixup so we don't do it again this section. */
f = bfd_malloc (sizeof (*f));
f->next = fixups;
f->tsec = tsec;
f->toff = toff;
f->trampoff = trampoff;
fixups = f;
trampoff += size;
}
else
{
val = f->trampoff - roff;
if (val >= max_branch_offset)
continue;
/* Nop out the reloc, since we're finalizing things here. */
irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
}
/* Get the section contents. */
if (contents == NULL)
{
/* Get cached copy if it exists. */
if (elf_section_data (isec)->this_hdr.contents != NULL)
contents = elf_section_data (isec)->this_hdr.contents;
else
{
/* Go get them off disk. */
if (!bfd_malloc_and_get_section (abfd, isec, &contents))
goto error_return;
}
}
/* Fix up the existing branch to hit the trampoline. */
hit_addr = contents + roff;
switch (r_type)
{
case R_PPC_REL24:
case R_PPC_LOCAL24PC:
case R_PPC_PLTREL24:
t0 = bfd_get_32 (abfd, hit_addr);
t0 &= ~0x3fffffc;
t0 |= val & 0x3fffffc;
bfd_put_32 (abfd, t0, hit_addr);
break;
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
t0 = bfd_get_32 (abfd, hit_addr);
t0 &= ~0xfffc;
t0 |= val & 0xfffc;
bfd_put_32 (abfd, t0, hit_addr);
break;
}
}
/* Write out the trampolines. */
changed = fixups != NULL;
if (fixups != NULL)
{
const int *stub;
bfd_byte *dest;
bfd_vma val;
int i, size;
do
{
struct one_fixup *f = fixups;
fixups = fixups->next;
free (f);
}
while (fixups);
contents = bfd_realloc (contents, trampoff);
if (contents == NULL)
goto error_return;
isec->size = (isec->size + 3) & (bfd_vma) -4;
/* Branch around the trampolines. */
val = trampoff - isec->size + 0x48000000;
dest = contents + isec->size;
isec->size = trampoff;
bfd_put_32 (abfd, val, dest);
dest += 4;
if (link_info->shared)
{
stub = shared_stub_entry;
size = ARRAY_SIZE (shared_stub_entry);
}
else
{
stub = stub_entry;
size = ARRAY_SIZE (stub_entry);
}
i = 0;
while (dest < contents + trampoff)
{
bfd_put_32 (abfd, stub[i], dest);
i++;
if (i == size)
i = 0;
dest += 4;
}
BFD_ASSERT (i == 0);
}
if (isymbuf != NULL
&& symtab_hdr->contents != (unsigned char *) isymbuf)
{
if (! link_info->keep_memory)
free (isymbuf);
else
{
/* Cache the symbols for elf_link_input_bfd. */
symtab_hdr->contents = (unsigned char *) isymbuf;
}
}
if (contents != NULL
&& elf_section_data (isec)->this_hdr.contents != contents)
{
if (!changed && !link_info->keep_memory)
free (contents);
else
{
/* Cache the section contents for elf_link_input_bfd. */
elf_section_data (isec)->this_hdr.contents = contents;
}
}
if (elf_section_data (isec)->relocs != internal_relocs)
{
if (!changed)
free (internal_relocs);
else
elf_section_data (isec)->relocs = internal_relocs;
}
*again = changed;
return TRUE;
error_return:
if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
free (isymbuf);
if (contents != NULL
&& elf_section_data (isec)->this_hdr.contents != contents)
free (contents);
if (internal_relocs != NULL
&& elf_section_data (isec)->relocs != internal_relocs)
free (internal_relocs);
return FALSE;
}
/* What to do when ld finds relocations against symbols defined in
discarded sections. */
static unsigned int
ppc_elf_action_discarded (asection *sec)
{
if (strcmp (".fixup", sec->name) == 0)
return 0;
if (strcmp (".got2", sec->name) == 0)
return 0;
return _bfd_elf_default_action_discarded (sec);
}
/* Fill in the address for a pointer generated in a linker section. */
static bfd_vma
elf_finish_pointer_linker_section (bfd *input_bfd,
elf_linker_section_t *lsect,
struct elf_link_hash_entry *h,
bfd_vma relocation,
const Elf_Internal_Rela *rel)
{
elf_linker_section_pointers_t *linker_section_ptr;
BFD_ASSERT (lsect != NULL);
if (h != NULL)
{
/* Handle global symbol. */
struct ppc_elf_link_hash_entry *eh;
eh = (struct ppc_elf_link_hash_entry *) h;
BFD_ASSERT (eh->elf.def_regular);
linker_section_ptr = eh->linker_section_pointer;
}
else
{
/* Handle local symbol. */
unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
}
linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
rel->r_addend,
lsect);
BFD_ASSERT (linker_section_ptr != NULL);
/* Offset will always be a multiple of four, so use the bottom bit
as a "written" flag. */
if ((linker_section_ptr->offset & 1) == 0)
{
bfd_put_32 (lsect->section->owner,
relocation + linker_section_ptr->addend,
lsect->section->contents + linker_section_ptr->offset);
linker_section_ptr->offset += 1;
}
relocation = (lsect->section->output_offset
+ linker_section_ptr->offset - 1
- 0x8000);
#ifdef DEBUG
fprintf (stderr,
"Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
lsect->name, (long) relocation, (long) relocation);
#endif
/* Subtract out the addend, because it will get added back in by the normal
processing. */
return relocation - linker_section_ptr->addend;
}
/* The RELOCATE_SECTION function is called by the ELF backend linker
to handle the relocations for a section.
The relocs are always passed as Rela structures; if the section
actually uses Rel structures, the r_addend field will always be
zero.
This function is responsible for adjust the section contents as
necessary, and (if using Rela relocs and generating a
relocatable output file) adjusting the reloc addend as
necessary.
This function does not have to worry about setting the reloc
address or the reloc symbol index.
LOCAL_SYMS is a pointer to the swapped in local symbols.
LOCAL_SECTIONS is an array giving the section in the input file
corresponding to the st_shndx field of each local symbol.
The global hash table entry for the global symbols can be found
via elf_sym_hashes (input_bfd).
When generating relocatable output, this function must handle
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
going to be the section symbol corresponding to the output
section, which means that the addend must be adjusted
accordingly. */
static bfd_boolean
ppc_elf_relocate_section (bfd *output_bfd,
struct bfd_link_info *info,
bfd *input_bfd,
asection *input_section,
bfd_byte *contents,
Elf_Internal_Rela *relocs,
Elf_Internal_Sym *local_syms,
asection **local_sections)
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
struct ppc_elf_link_hash_table *htab;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
Elf_Internal_Rela outrel;
bfd_byte *loc;
asection *got2, *sreloc = NULL;
bfd_vma *local_got_offsets;
bfd_boolean ret = TRUE;
#ifdef DEBUG
_bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
"%ld relocations%s",
input_bfd, input_section,
(long) input_section->reloc_count,
(info->relocatable) ? " (relocatable)" : "");
#endif
got2 = bfd_get_section_by_name (input_bfd, ".got2");
if (info->relocatable)
{
if (got2 == NULL)
return TRUE;
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
enum elf_ppc_reloc_type r_type;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == R_PPC_PLTREL24
&& rel->r_addend >= 32768)
{
/* R_PPC_PLTREL24 is rather special. If non-zero, the
addend specifies the GOT pointer offset within .got2. */
rel->r_addend += got2->output_offset;
}
}
return TRUE;
}
/* Initialize howto table if not already done. */
if (!ppc_elf_howto_table[R_PPC_ADDR32])
ppc_elf_howto_init ();
htab = ppc_elf_hash_table (info);
local_got_offsets = elf_local_got_offsets (input_bfd);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
enum elf_ppc_reloc_type r_type;
bfd_vma addend;
bfd_reloc_status_type r;
Elf_Internal_Sym *sym;
asection *sec;
struct elf_link_hash_entry *h;
const char *sym_name;
reloc_howto_type *howto;
unsigned long r_symndx;
bfd_vma relocation;
bfd_vma branch_bit, insn, from;
bfd_boolean unresolved_reloc;
bfd_boolean warned;
unsigned int tls_type, tls_mask, tls_gd;
r_type = ELF32_R_TYPE (rel->r_info);
sym = NULL;
sec = NULL;
h = NULL;
unresolved_reloc = FALSE;
warned = FALSE;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
sym_name = h->root.root.string;
}
/* TLS optimizations. Replace instruction sequences and relocs
based on information we collected in tls_optimize. We edit
RELOCS so that --emit-relocs will output something sensible
for the final instruction stream. */
tls_mask = 0;
tls_gd = 0;
if (IS_PPC_TLS_RELOC (r_type))
{
if (h != NULL)
tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
else if (local_got_offsets != NULL)
{
char *lgot_masks;
lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
tls_mask = lgot_masks[r_symndx];
}
}
/* Ensure reloc mapping code below stays sane. */
if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
|| (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
|| (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
|| (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
|| (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
|| (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
|| (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
|| (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
abort ();
switch (r_type)
{
default:
break;
case R_PPC_GOT_TPREL16:
case R_PPC_GOT_TPREL16_LO:
if (tls_mask != 0
&& (tls_mask & TLS_TPREL) == 0)
{
bfd_vma insn;
insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
insn &= 31 << 21;
insn |= 0x3c020000; /* addis 0,2,0 */
bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
r_type = R_PPC_TPREL16_HA;
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
}
break;
case R_PPC_TLS:
if (tls_mask != 0
&& (tls_mask & TLS_TPREL) == 0)
{
bfd_vma insn, rtra;
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
if ((insn & ((31 << 26) | (31 << 11)))
== ((31 << 26) | (2 << 11)))
rtra = insn & ((1 << 26) - (1 << 16));
else if ((insn & ((31 << 26) | (31 << 16)))
== ((31 << 26) | (2 << 16)))
rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
else
abort ();
if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
/* add -> addi. */
insn = 14 << 26;
else if ((insn & (31 << 1)) == 23 << 1
&& ((insn & (31 << 6)) < 14 << 6
|| ((insn & (31 << 6)) >= 16 << 6
&& (insn & (31 << 6)) < 24 << 6)))
/* load and store indexed -> dform. */
insn = (32 | ((insn >> 6) & 31)) << 26;
else if ((insn & (31 << 1)) == 21 << 1
&& (insn & (0x1a << 6)) == 0)
/* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
insn = (((58 | ((insn >> 6) & 4)) << 26)
| ((insn >> 6) & 1));
else if ((insn & (31 << 1)) == 21 << 1
&& (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
/* lwax -> lwa. */
insn = (58 << 26) | 2;
else
abort ();
insn |= rtra;
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
r_type = R_PPC_TPREL16_LO;
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
/* Was PPC_TLS which sits on insn boundary, now
PPC_TPREL16_LO which is at insn+2. */
rel->r_offset += 2;
}
break;
case R_PPC_GOT_TLSGD16_HI:
case R_PPC_GOT_TLSGD16_HA:
tls_gd = TLS_TPRELGD;
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
goto tls_gdld_hi;
break;
case R_PPC_GOT_TLSLD16_HI:
case R_PPC_GOT_TLSLD16_HA:
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
{
tls_gdld_hi:
if ((tls_mask & tls_gd) != 0)
r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
+ R_PPC_GOT_TPREL16);
else
{
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
rel->r_offset -= 2;
r_type = R_PPC_NONE;
}
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
}
break;
case R_PPC_GOT_TLSGD16:
case R_PPC_GOT_TLSGD16_LO:
tls_gd = TLS_TPRELGD;
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
goto tls_get_addr_check;
break;
case R_PPC_GOT_TLSLD16:
case R_PPC_GOT_TLSLD16_LO:
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
{
tls_get_addr_check:
if (rel + 1 < relend)
{
enum elf_ppc_reloc_type r_type2;
unsigned long r_symndx2;
struct elf_link_hash_entry *h2;
bfd_vma insn1, insn2;
bfd_vma offset;
/* The next instruction should be a call to
__tls_get_addr. Peek at the reloc to be sure. */
r_type2 = ELF32_R_TYPE (rel[1].r_info);
r_symndx2 = ELF32_R_SYM (rel[1].r_info);
if (r_symndx2 < symtab_hdr->sh_info
|| (r_type2 != R_PPC_REL14
&& r_type2 != R_PPC_REL14_BRTAKEN
&& r_type2 != R_PPC_REL14_BRNTAKEN
&& r_type2 != R_PPC_REL24
&& r_type2 != R_PPC_PLTREL24))
break;
h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
while (h2->root.type == bfd_link_hash_indirect
|| h2->root.type == bfd_link_hash_warning)
h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
if (h2 == NULL || h2 != htab->tls_get_addr)
break;
/* OK, it checks out. Replace the call. */
offset = rel[1].r_offset;
insn1 = bfd_get_32 (output_bfd,
contents + rel->r_offset - 2);
if ((tls_mask & tls_gd) != 0)
{
/* IE */
insn1 &= (1 << 26) - 1;
insn1 |= 32 << 26; /* lwz */
insn2 = 0x7c631214; /* add 3,3,2 */
rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
+ R_PPC_GOT_TPREL16);
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
}
else
{
/* LE */
insn1 = 0x3c620000; /* addis 3,2,0 */
insn2 = 0x38630000; /* addi 3,3,0 */
if (tls_gd == 0)
{
/* Was an LD reloc. */
r_symndx = 0;
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
}
r_type = R_PPC_TPREL16_HA;
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
rel[1].r_info = ELF32_R_INFO (r_symndx,
R_PPC_TPREL16_LO);
rel[1].r_offset += 2;
}
bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
bfd_put_32 (output_bfd, insn2, contents + offset);
if (tls_gd == 0)
{
/* We changed the symbol on an LD reloc. Start over
in order to get h, sym, sec etc. right. */
rel--;
continue;
}
}
}
break;
}
/* Handle other relocations that tweak non-addend part of insn. */
branch_bit = 0;
switch (r_type)
{
default:
break;
/* Branch taken prediction relocations. */
case R_PPC_ADDR14_BRTAKEN:
case R_PPC_REL14_BRTAKEN:
branch_bit = BRANCH_PREDICT_BIT;
/* Fall thru */
/* Branch not taken prediction relocations. */
case R_PPC_ADDR14_BRNTAKEN:
case R_PPC_REL14_BRNTAKEN:
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
insn &= ~BRANCH_PREDICT_BIT;
insn |= branch_bit;
from = (rel->r_offset
+ input_section->output_offset
+ input_section->output_section->vma);
/* Invert 'y' bit if not the default. */
if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
insn ^= BRANCH_PREDICT_BIT;
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
break;
}
addend = rel->r_addend;
tls_type = 0;
howto = NULL;
if (r_type < R_PPC_max)
howto = ppc_elf_howto_table[r_type];
switch (r_type)
{
default:
(*_bfd_error_handler)
(_("%B: unknown relocation type %d for symbol %s"),
input_bfd, (int) r_type, sym_name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
continue;
case R_PPC_NONE:
case R_PPC_TLS:
case R_PPC_EMB_MRKREF:
case R_PPC_GNU_VTINHERIT:
case R_PPC_GNU_VTENTRY:
continue;
/* GOT16 relocations. Like an ADDR16 using the symbol's
address in the GOT as relocation value instead of the
symbol's value itself. Also, create a GOT entry for the
symbol and put the symbol value there. */
case R_PPC_GOT_TLSGD16:
case R_PPC_GOT_TLSGD16_LO:
case R_PPC_GOT_TLSGD16_HI:
case R_PPC_GOT_TLSGD16_HA:
tls_type = TLS_TLS | TLS_GD;
goto dogot;
case R_PPC_GOT_TLSLD16:
case R_PPC_GOT_TLSLD16_LO:
case R_PPC_GOT_TLSLD16_HI:
case R_PPC_GOT_TLSLD16_HA:
tls_type = TLS_TLS | TLS_LD;
goto dogot;
case R_PPC_GOT_TPREL16:
case R_PPC_GOT_TPREL16_LO:
case R_PPC_GOT_TPREL16_HI:
case R_PPC_GOT_TPREL16_HA:
tls_type = TLS_TLS | TLS_TPREL;
goto dogot;
case R_PPC_GOT_DTPREL16:
case R_PPC_GOT_DTPREL16_LO:
case R_PPC_GOT_DTPREL16_HI:
case R_PPC_GOT_DTPREL16_HA:
tls_type = TLS_TLS | TLS_DTPREL;
goto dogot;
case R_PPC_GOT16:
case R_PPC_GOT16_LO:
case R_PPC_GOT16_HI:
case R_PPC_GOT16_HA:
dogot:
{
/* Relocation is to the entry for this symbol in the global
offset table. */
bfd_vma off;
bfd_vma *offp;
unsigned long indx;
if (htab->got == NULL)
abort ();
indx = 0;
if (tls_type == (TLS_TLS | TLS_LD)
&& (h == NULL
|| !h->def_dynamic))
offp = &htab->tlsld_got.offset;
else if (h != NULL)
{
bfd_boolean dyn;
dyn = htab->elf.dynamic_sections_created;
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|| (info->shared
&& SYMBOL_REFERENCES_LOCAL (info, h)))
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
locally, or the symbol was forced to be local
because of a version file. */
;
else
{
indx = h->dynindx;
unresolved_reloc = FALSE;
}
offp = &h->got.offset;
}
else
{
if (local_got_offsets == NULL)
abort ();
offp = &local_got_offsets[r_symndx];
}
/* The offset must always be a multiple of 4. We use the
least significant bit to record whether we have already
processed this entry. */
off = *offp;
if ((off & 1) != 0)
off &= ~1;
else
{
unsigned int tls_m = (tls_mask
& (TLS_LD | TLS_GD | TLS_DTPREL
| TLS_TPREL | TLS_TPRELGD));
if (offp == &htab->tlsld_got.offset)
tls_m = TLS_LD;
else if (h == NULL
|| !h->def_dynamic)
tls_m &= ~TLS_LD;
/* We might have multiple got entries for this sym.
Initialize them all. */
do
{
int tls_ty = 0;
if ((tls_m & TLS_LD) != 0)
{
tls_ty = TLS_TLS | TLS_LD;
tls_m &= ~TLS_LD;
}
else if ((tls_m & TLS_GD) != 0)
{
tls_ty = TLS_TLS | TLS_GD;
tls_m &= ~TLS_GD;
}
else if ((tls_m & TLS_DTPREL) != 0)
{
tls_ty = TLS_TLS | TLS_DTPREL;
tls_m &= ~TLS_DTPREL;
}
else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
{
tls_ty = TLS_TLS | TLS_TPREL;
tls_m = 0;
}
/* Generate relocs for the dynamic linker. */
if ((info->shared || indx != 0)
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
{
outrel.r_offset = (htab->got->output_section->vma
+ htab->got->output_offset
+ off);
outrel.r_addend = 0;
if (tls_ty & (TLS_LD | TLS_GD))
{
outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
if (tls_ty == (TLS_TLS | TLS_GD))
{
loc = htab->relgot->contents;
loc += (htab->relgot->reloc_count++
* sizeof (Elf32_External_Rela));
bfd_elf32_swap_reloca_out (output_bfd,
&outrel, loc);
outrel.r_offset += 4;
outrel.r_info
= ELF32_R_INFO (indx, R_PPC_DTPREL32);
}
}
else if (tls_ty == (TLS_TLS | TLS_DTPREL))
outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
else if (tls_ty == (TLS_TLS | TLS_TPREL))
outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
else if (indx == 0)
outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
else
outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
if (indx == 0)
{
outrel.r_addend += relocation;
if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
outrel.r_addend -= htab->elf.tls_sec->vma;
}
loc = htab->relgot->contents;
loc += (htab->relgot->reloc_count++
* sizeof (Elf32_External_Rela));
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
}
/* Init the .got section contents if we're not
emitting a reloc. */
else
{
bfd_vma value = relocation;
if (tls_ty == (TLS_TLS | TLS_LD))
value = 1;
else if (tls_ty != 0)
{
value -= htab->elf.tls_sec->vma + DTP_OFFSET;
if (tls_ty == (TLS_TLS | TLS_TPREL))
value += DTP_OFFSET - TP_OFFSET;
if (tls_ty == (TLS_TLS | TLS_GD))
{
bfd_put_32 (output_bfd, value,
htab->got->contents + off + 4);
value = 1;
}
}
bfd_put_32 (output_bfd, value,
htab->got->contents + off);
}
off += 4;
if (tls_ty & (TLS_LD | TLS_GD))
off += 4;
}
while (tls_m != 0);
off = *offp;
*offp = off | 1;
}
if (off >= (bfd_vma) -2)
abort ();
if ((tls_type & TLS_TLS) != 0)
{
if (tls_type != (TLS_TLS | TLS_LD))
{
if ((tls_mask & TLS_LD) != 0
&& !(h == NULL
|| !h->def_dynamic))
off += 8;
if (tls_type != (TLS_TLS | TLS_GD))
{
if ((tls_mask & TLS_GD) != 0)
off += 8;
if (tls_type != (TLS_TLS | TLS_DTPREL))
{
if ((tls_mask & TLS_DTPREL) != 0)
off += 4;
}
}
}
}
relocation = htab->got->output_offset + off;
relocation -= htab->elf.hgot->root.u.def.value;
/* Addends on got relocations don't make much sense.
x+off@got is actually x@got+off, and since the got is
generated by a hash table traversal, the value in the
got at entry m+n bears little relation to the entry m. */
if (addend != 0)
(*_bfd_error_handler)
(_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
input_bfd,
input_section,
(long) rel->r_offset,
howto->name,
sym_name);
}
break;
/* Relocations that need no special processing. */
case R_PPC_LOCAL24PC:
/* It makes no sense to point a local relocation
at a symbol not in this object. */
if (unresolved_reloc)
{
if (! (*info->callbacks->undefined_symbol) (info,
h->root.root.string,
input_bfd,
input_section,
rel->r_offset,
TRUE))
return FALSE;
continue;
}
break;
case R_PPC_DTPREL16:
case R_PPC_DTPREL16_LO:
case R_PPC_DTPREL16_HI:
case R_PPC_DTPREL16_HA:
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
break;
/* Relocations that may need to be propagated if this is a shared
object. */
case R_PPC_TPREL16:
case R_PPC_TPREL16_LO:
case R_PPC_TPREL16_HI:
case R_PPC_TPREL16_HA:
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
/* The TPREL16 relocs shouldn't really be used in shared
libs as they will result in DT_TEXTREL being set, but
support them anyway. */
goto dodyn;
case R_PPC_TPREL32:
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
goto dodyn;
case R_PPC_DTPREL32:
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
goto dodyn;
case R_PPC_DTPMOD32:
relocation = 1;
addend = 0;
goto dodyn;
case R_PPC_REL16:
case R_PPC_REL16_LO:
case R_PPC_REL16_HI:
case R_PPC_REL16_HA:
break;
case R_PPC_REL24:
case R_PPC_REL32:
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
/* If these relocations are not to a named symbol, they can be
handled right here, no need to bother the dynamic linker. */
if (SYMBOL_REFERENCES_LOCAL (info, h)
|| h == htab->elf.hgot)
break;
/* fall through */
/* Relocations that always need to be propagated if this is a shared
object. */
case R_PPC_ADDR32:
case R_PPC_ADDR24:
case R_PPC_ADDR16:
case R_PPC_ADDR16_LO:
case R_PPC_ADDR16_HI:
case R_PPC_ADDR16_HA:
case R_PPC_ADDR14:
case R_PPC_ADDR14_BRTAKEN:
case R_PPC_ADDR14_BRNTAKEN:
case R_PPC_UADDR32:
case R_PPC_UADDR16:
/* r_symndx will be zero only for relocs against symbols
from removed linkonce sections, or sections discarded by
a linker script. */
dodyn:
if (r_symndx == 0)
break;
/* Fall thru. */
if ((input_section->flags & SEC_ALLOC) == 0)
break;
/* Fall thru. */
if ((info->shared
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& (MUST_BE_DYN_RELOC (r_type)
|| !SYMBOL_CALLS_LOCAL (info, h)))
|| (ELIMINATE_COPY_RELOCS
&& !info->shared
&& h != NULL
&& h->dynindx != -1
&& !h->non_got_ref
&& h->def_dynamic
&& !h->def_regular))
{
int skip;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_relocate_section needs to "
"create relocation for %s\n",
(h && h->root.root.string
? h->root.root.string : "<unknown>"));
#endif
/* When generating a shared object, these relocations
are copied into the output file to be resolved at run
time. */
if (sreloc == NULL)
{
const char *name;
name = (bfd_elf_string_from_elf_section
(input_bfd,
elf_elfheader (input_bfd)->e_shstrndx,
elf_section_data (input_section)->rel_hdr.sh_name));
if (name == NULL)
return FALSE;
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
&& strcmp (bfd_get_section_name (input_bfd,
input_section),
name + 5) == 0);
sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
BFD_ASSERT (sreloc != NULL);
}
skip = 0;
outrel.r_offset =
_bfd_elf_section_offset (output_bfd, info, input_section,
rel->r_offset);
if (outrel.r_offset == (bfd_vma) -1
|| outrel.r_offset == (bfd_vma) -2)
skip = (int) outrel.r_offset;
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
if (skip)
memset (&outrel, 0, sizeof outrel);
else if (!SYMBOL_REFERENCES_LOCAL (info, h))
{
unresolved_reloc = FALSE;
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
}
else
{
outrel.r_addend = relocation + rel->r_addend;
if (r_type == R_PPC_ADDR32)
outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
else
{
long indx;
if (bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
else
{
asection *osec;
/* We are turning this relocation into one
against a section symbol. It would be
proper to subtract the symbol's value,
osec->vma, from the emitted reloc addend,
but ld.so expects buggy relocs. */
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
BFD_ASSERT (indx > 0);
#ifdef DEBUG
if (indx <= 0)
printf ("indx=%d section=%s flags=%08x name=%s\n",
indx, osec->name, osec->flags,
h->root.root.string);
#endif
}
outrel.r_info = ELF32_R_INFO (indx, r_type);
}
}
loc = sreloc->contents;
loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
if (skip == -1)
continue;
/* This reloc will be computed at runtime. We clear the memory
so that it contains predictable value. */
if (! skip
&& ((input_section->flags & SEC_ALLOC) != 0
|| ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
{
relocation = howto->pc_relative ? outrel.r_offset : 0;
addend = 0;
break;
}
}
break;
case R_PPC_RELAX32PC_PLT:
case R_PPC_RELAX32_PLT:
{
struct plt_entry *ent = find_plt_ent (h, got2, addend);
if (htab->plt_type == PLT_NEW)
relocation = (htab->glink->output_section->vma
+ htab->glink->output_offset
+ ent->glink_offset);
else
relocation = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ ent->plt.offset);
addend = 0;
}
if (r_type == R_PPC_RELAX32_PLT)
goto relax32;
/* Fall thru */
case R_PPC_RELAX32PC:
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset - 4);
/* Fall thru */
case R_PPC_RELAX32:
relax32:
{
unsigned long t0;
unsigned long t1;
t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
/* We're clearing the bits for R_PPC_ADDR16_HA
and R_PPC_ADDR16_LO here. */
t0 &= ~0xffff;
t1 &= ~0xffff;
/* t0 is HA, t1 is LO */
relocation += addend;
t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
t1 |= relocation & 0xffff;
bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
}
continue;
/* Indirect .sdata relocation. */
case R_PPC_EMB_SDAI16:
BFD_ASSERT (htab->sdata[0].section != NULL);
relocation
= elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
h, relocation, rel);
break;
/* Indirect .sdata2 relocation. */
case R_PPC_EMB_SDA2I16:
BFD_ASSERT (htab->sdata[1].section != NULL);
relocation
= elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
h, relocation, rel);
break;
/* Handle the TOC16 reloc. We want to use the offset within the .got
section, not the actual VMA. This is appropriate when generating
an embedded ELF object, for which the .got section acts like the
AIX .toc section. */
case R_PPC_TOC16: /* phony GOT16 relocations */
BFD_ASSERT (sec != NULL);
BFD_ASSERT (bfd_is_und_section (sec)
|| strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
|| strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
addend -= sec->output_section->vma + sec->output_offset + 0x8000;
break;
case R_PPC_PLTREL24:
/* Relocation is to the entry for this symbol in the
procedure linkage table. */
{
struct plt_entry *ent = find_plt_ent (h, got2, addend);
addend = 0;
if (ent == NULL
|| htab->plt == NULL)
{
/* We didn't make a PLT entry for this symbol. This
happens when statically linking PIC code, or when
using -Bsymbolic. */
break;
}
unresolved_reloc = FALSE;
if (htab->plt_type == PLT_NEW)
relocation = (htab->glink->output_section->vma
+ htab->glink->output_offset
+ ent->glink_offset);
else
relocation = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ ent->plt.offset);
}
break;
/* Relocate against _SDA_BASE_. */
case R_PPC_SDAREL16:
{
const char *name;
struct elf_link_hash_entry *sh;
BFD_ASSERT (sec != NULL);
name = bfd_get_section_name (abfd, sec->output_section);
if (! ((strncmp (name, ".sdata", 6) == 0
&& (name[6] == 0 || name[6] == '.'))
|| (strncmp (name, ".sbss", 5) == 0
&& (name[5] == 0 || name[5] == '.'))))
{
(*_bfd_error_handler)
(_("%B: the target (%s) of a %s relocation is "
"in the wrong output section (%s)"),
input_bfd,
sym_name,
howto->name,
name);
}
sh = htab->sdata[0].sym;
addend -= (sh->root.u.def.value
+ sh->root.u.def.section->output_offset
+ sh->root.u.def.section->output_section->vma);
}
break;
/* Relocate against _SDA2_BASE_. */
case R_PPC_EMB_SDA2REL:
{
const char *name;
struct elf_link_hash_entry *sh;
BFD_ASSERT (sec != NULL);
name = bfd_get_section_name (abfd, sec->output_section);
if (! (strncmp (name, ".sdata2", 7) == 0
|| strncmp (name, ".sbss2", 6) == 0))
{
(*_bfd_error_handler)
(_("%B: the target (%s) of a %s relocation is "
"in the wrong output section (%s)"),
input_bfd,
sym_name,
howto->name,
name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
continue;
}
sh = htab->sdata[1].sym;
addend -= (sh->root.u.def.value
+ sh->root.u.def.section->output_offset
+ sh->root.u.def.section->output_section->vma);
}
break;
/* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
case R_PPC_EMB_SDA21:
case R_PPC_EMB_RELSDA:
{
const char *name;
int reg;
struct elf_link_hash_entry *sh;
BFD_ASSERT (sec != NULL);
name = bfd_get_section_name (abfd, sec->output_section);
if (((strncmp (name, ".sdata", 6) == 0
&& (name[6] == 0 || name[6] == '.'))
|| (strncmp (name, ".sbss", 5) == 0
&& (name[5] == 0 || name[5] == '.'))))
{
reg = 13;
sh = htab->sdata[0].sym;
addend -= (sh->root.u.def.value
+ sh->root.u.def.section->output_offset
+ sh->root.u.def.section->output_section->vma);
}
else if (strncmp (name, ".sdata2", 7) == 0
|| strncmp (name, ".sbss2", 6) == 0)
{
reg = 2;
sh = htab->sdata[1].sym;
addend -= (sh->root.u.def.value
+ sh->root.u.def.section->output_offset
+ sh->root.u.def.section->output_section->vma);
}
else if (strcmp (name, ".PPC.EMB.sdata0") == 0
|| strcmp (name, ".PPC.EMB.sbss0") == 0)
{
reg = 0;
}
else
{
(*_bfd_error_handler)
(_("%B: the target (%s) of a %s relocation is "
"in the wrong output section (%s)"),
input_bfd,
sym_name,
howto->name,
name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
continue;
}
if (r_type == R_PPC_EMB_SDA21)
{ /* fill in register field */
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
}
}
break;
/* Relocate against the beginning of the section. */
case R_PPC_SECTOFF:
case R_PPC_SECTOFF_LO:
case R_PPC_SECTOFF_HI:
case R_PPC_SECTOFF_HA:
BFD_ASSERT (sec != NULL);
addend -= sec->output_section->vma;
break;
/* Negative relocations. */
case R_PPC_EMB_NADDR32:
case R_PPC_EMB_NADDR16:
case R_PPC_EMB_NADDR16_LO:
case R_PPC_EMB_NADDR16_HI:
case R_PPC_EMB_NADDR16_HA:
addend -= 2 * relocation;
break;
case R_PPC_COPY:
case R_PPC_GLOB_DAT:
case R_PPC_JMP_SLOT:
case R_PPC_RELATIVE:
case R_PPC_PLT32:
case R_PPC_PLTREL32:
case R_PPC_PLT16_LO:
case R_PPC_PLT16_HI:
case R_PPC_PLT16_HA:
case R_PPC_ADDR30:
case R_PPC_EMB_RELSEC16:
case R_PPC_EMB_RELST_LO:
case R_PPC_EMB_RELST_HI:
case R_PPC_EMB_RELST_HA:
case R_PPC_EMB_BIT_FLD:
(*_bfd_error_handler)
(_("%B: relocation %s is not yet supported for symbol %s."),
input_bfd,
howto->name,
sym_name);
bfd_set_error (bfd_error_invalid_operation);
ret = FALSE;
continue;
}
/* Do any further special processing. */
switch (r_type)
{
default:
break;
case R_PPC_ADDR16_HA:
case R_PPC_REL16_HA:
case R_PPC_GOT16_HA:
case R_PPC_PLT16_HA:
case R_PPC_SECTOFF_HA:
case R_PPC_TPREL16_HA:
case R_PPC_DTPREL16_HA:
case R_PPC_GOT_TLSGD16_HA:
case R_PPC_GOT_TLSLD16_HA:
case R_PPC_GOT_TPREL16_HA:
case R_PPC_GOT_DTPREL16_HA:
case R_PPC_EMB_NADDR16_HA:
case R_PPC_EMB_RELST_HA:
/* It's just possible that this symbol is a weak symbol
that's not actually defined anywhere. In that case,
'sec' would be NULL, and we should leave the symbol
alone (it will be set to zero elsewhere in the link). */
if (sec != NULL)
/* Add 0x10000 if sign bit in 0:15 is set.
Bits 0:15 are not used. */
addend += 0x8000;
break;
}
#ifdef DEBUG
fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
"offset = %ld, addend = %ld\n",
howto->name,
(int) r_type,
sym_name,
r_symndx,
(long) rel->r_offset,
(long) addend);
#endif
if (unresolved_reloc
&& !((input_section->flags & SEC_DEBUGGING) != 0
&& h->def_dynamic))
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
input_bfd,
input_section,
(long) rel->r_offset,
howto->name,
sym_name);
ret = FALSE;
}
r = _bfd_final_link_relocate (howto,
input_bfd,
input_section,
contents,
rel->r_offset,
relocation,
addend);
if (r != bfd_reloc_ok)
{
if (r == bfd_reloc_overflow)
{
if (warned)
continue;
if (h != NULL
&& h->root.type == bfd_link_hash_undefweak
&& howto->pc_relative)
{
/* Assume this is a call protected by other code that
detect the symbol is undefined. If this is the case,
we can safely ignore the overflow. If not, the
program is hosed anyway, and a little warning isn't
going to help. */
continue;
}
if (! (*info->callbacks->reloc_overflow) (info,
(h ? &h->root : NULL),
sym_name,
howto->name,
rel->r_addend,
input_bfd,
input_section,
rel->r_offset))
return FALSE;
}
else
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
input_bfd, input_section,
(long) rel->r_offset, howto->name, sym_name, (int) r);
ret = FALSE;
}
}
}
#ifdef DEBUG
fprintf (stderr, "\n");
#endif
return ret;
}
#define PPC_LO(v) ((v) & 0xffff)
#define PPC_HI(v) (((v) >> 16) & 0xffff)
#define PPC_HA(v) PPC_HI ((v) + 0x8000)
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
static bfd_boolean
ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
struct bfd_link_info *info,
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
struct ppc_elf_link_hash_table *htab;
struct plt_entry *ent;
bfd_boolean doneone;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
h->root.root.string);
#endif
htab = ppc_elf_hash_table (info);
BFD_ASSERT (htab->elf.dynobj != NULL);
doneone = FALSE;
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
if (ent->plt.offset != (bfd_vma) -1)
{
if (!doneone)
{
Elf_Internal_Rela rela;
bfd_byte *loc;
bfd_vma reloc_index;
if (htab->plt_type == PLT_NEW)
reloc_index = ent->plt.offset / 4;
else
{
reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
/ htab->plt_slot_size);
if (reloc_index > PLT_NUM_SINGLE_ENTRIES
&& htab->plt_type == PLT_OLD)
reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
}
/* This symbol has an entry in the procedure linkage table.
Set it up. */
if (htab->plt_type == PLT_VXWORKS)
{
bfd_vma got_offset;
const bfd_vma *plt_entry;
/* The first three entries in .got.plt are reserved. */
got_offset = (reloc_index + 3) * 4;
/* Use the right PLT. */
plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
: ppc_elf_vxworks_plt_entry;
/* Fill in the .plt on VxWorks. */
if (info->shared)
{
bfd_vma got_offset_hi = (got_offset >> 16)
+ ((got_offset & 0x8000) >> 15);
bfd_put_32 (output_bfd,
plt_entry[0] | (got_offset_hi & 0xffff),
htab->plt->contents + ent->plt.offset + 0);
bfd_put_32 (output_bfd,
plt_entry[1] | (got_offset & 0xffff),
htab->plt->contents + ent->plt.offset + 4);
}
else
{
bfd_vma got_loc
= (got_offset
+ htab->elf.hgot->root.u.def.value
+ htab->elf.hgot->root.u.def.section->output_offset
+ htab->elf.hgot->root.u.def.section->output_section->vma);
bfd_vma got_loc_hi = (got_loc >> 16)
+ ((got_loc & 0x8000) >> 15);
bfd_put_32 (output_bfd,
plt_entry[0] | (got_loc_hi & 0xffff),
htab->plt->contents + ent->plt.offset + 0);
bfd_put_32 (output_bfd,
plt_entry[1] | (got_loc & 0xffff),
htab->plt->contents + ent->plt.offset + 4);
}
bfd_put_32 (output_bfd, plt_entry[2],
htab->plt->contents + ent->plt.offset + 8);
bfd_put_32 (output_bfd, plt_entry[3],
htab->plt->contents + ent->plt.offset + 12);
/* This instruction is an immediate load. The value loaded is
the byte offset of the R_PPC_JMP_SLOT relocation from the
start of the .rela.plt section. The value is stored in the
low-order 16 bits of the load instruction. */
/* NOTE: It appears that this is now an index rather than a
prescaled offset. */
bfd_put_32 (output_bfd,
plt_entry[4] | reloc_index,
htab->plt->contents + ent->plt.offset + 16);
/* This instruction is a PC-relative branch whose target is
the start of the PLT section. The address of this branch
instruction is 20 bytes beyond the start of this PLT entry.
The address is encoded in bits 6-29, inclusive. The value
stored is right-shifted by two bits, permitting a 26-bit
offset. */
bfd_put_32 (output_bfd,
(plt_entry[5]
| (-(ent->plt.offset + 20) & 0x03fffffc)),
htab->plt->contents + ent->plt.offset + 20);
bfd_put_32 (output_bfd, plt_entry[6],
htab->plt->contents + ent->plt.offset + 24);
bfd_put_32 (output_bfd, plt_entry[7],
htab->plt->contents + ent->plt.offset + 28);
/* Fill in the GOT entry corresponding to this PLT slot with
the address immediately after the the "bctr" instruction
in this PLT entry. */
bfd_put_32 (output_bfd, (htab->plt->output_section->vma
+ htab->plt->output_offset
+ ent->plt.offset + 16),
htab->sgotplt->contents + got_offset);
if (!info->shared)
{
/* Fill in a couple of entries in .rela.plt.unloaded. */
loc = htab->srelplt2->contents
+ ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
* VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
* sizeof (Elf32_External_Rela));
/* Provide the @ha relocation for the first instruction. */
rela.r_offset = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ ent->plt.offset + 2);
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
R_PPC_ADDR16_HA);
rela.r_addend = got_offset;
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
loc += sizeof (Elf32_External_Rela);
/* Provide the @l relocation for the second instruction. */
rela.r_offset = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ ent->plt.offset + 6);
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
R_PPC_ADDR16_LO);
rela.r_addend = got_offset;
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
loc += sizeof (Elf32_External_Rela);
/* Provide a relocation for the GOT entry corresponding to this
PLT slot. Point it at the middle of the .plt entry. */
rela.r_offset = (htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
+ got_offset);
rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
R_PPC_ADDR32);
rela.r_addend = ent->plt.offset + 16;
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
/* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
In particular, the offset for the relocation is not the
address of the PLT entry for this function, as specified
by the ABI. Instead, the offset is set to the address of
the GOT slot for this function. See EABI 4.4.4.1. */
rela.r_offset = (htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
+ got_offset);
}
else
{
rela.r_offset = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ ent->plt.offset);
if (htab->plt_type == PLT_OLD)
{
/* We don't need to fill in the .plt. The ppc dynamic
linker will fill it in. */
}
else
{
bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
+ htab->glink->output_section->vma
+ htab->glink->output_offset);
bfd_put_32 (output_bfd, val,
htab->plt->contents + ent->plt.offset);
}
}
/* Fill in the entry in the .rela.plt section. */
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
rela.r_addend = 0;
loc = (htab->relplt->contents
+ reloc_index * sizeof (Elf32_External_Rela));
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
if (!h->def_regular)
{
/* Mark the symbol as undefined, rather than as defined in
the .plt section. Leave the value alone. */
sym->st_shndx = SHN_UNDEF;
/* If the symbol is weak, we do need to clear the value.
Otherwise, the PLT entry would provide a definition for
the symbol even if the symbol wasn't defined anywhere,
and so the symbol would never be NULL. */
if (!h->ref_regular_nonweak)
sym->st_value = 0;
}
doneone = TRUE;
}
if (htab->plt_type == PLT_NEW)
{
bfd_vma plt;
unsigned char *p;
plt = (ent->plt.offset
+ htab->plt->output_section->vma
+ htab->plt->output_offset);
p = (unsigned char *) htab->glink->contents + ent->glink_offset;
if (info->shared || info->pie)
{
bfd_vma got = 0;
if (ent->addend >= 32768)
got = (ent->addend
+ ent->sec->output_section->vma
+ ent->sec->output_offset);
else if (htab->elf.hgot != NULL)
got = (htab->elf.hgot->root.u.def.value
+ htab->elf.hgot->root.u.def.section->output_section->vma
+ htab->elf.hgot->root.u.def.section->output_offset);
plt -= got;
if (plt + 0x8000 < 0x10000)
{
bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
p += 4;
bfd_put_32 (output_bfd, MTCTR_11, p);
p += 4;
bfd_put_32 (output_bfd, BCTR, p);
p += 4;
bfd_put_32 (output_bfd, NOP, p);
p += 4;
}
else
{
bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
p += 4;
bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
p += 4;
bfd_put_32 (output_bfd, MTCTR_11, p);
p += 4;
bfd_put_32 (output_bfd, BCTR, p);
p += 4;
}
}
else
{
bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
p += 4;
bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
p += 4;
bfd_put_32 (output_bfd, MTCTR_11, p);
p += 4;
bfd_put_32 (output_bfd, BCTR, p);
p += 4;
/* We only need one non-PIC glink stub. */
break;
}
}
else
break;
}
if (h->needs_copy)
{
asection *s;
Elf_Internal_Rela rela;
bfd_byte *loc;
/* This symbols needs a copy reloc. Set it up. */
#ifdef DEBUG
fprintf (stderr, ", copy");
#endif
BFD_ASSERT (h->dynindx != -1);
if (ppc_elf_hash_entry (h)->has_sda_refs)
s = htab->relsbss;
else
s = htab->relbss;
BFD_ASSERT (s != NULL);
rela.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
rela.r_addend = 0;
loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
#ifdef DEBUG
fprintf (stderr, "\n");
#endif
/* Mark some specially defined symbols as absolute. */
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|| (!htab->is_vxworks
&& (h == htab->elf.hgot
|| strcmp (h->root.root.string,
"_PROCEDURE_LINKAGE_TABLE_") == 0)))
sym->st_shndx = SHN_ABS;
return TRUE;
}
static enum elf_reloc_type_class
ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
{
switch (ELF32_R_TYPE (rela->r_info))
{
case R_PPC_RELATIVE:
return reloc_class_relative;
case R_PPC_REL24:
case R_PPC_ADDR24:
case R_PPC_JMP_SLOT:
return reloc_class_plt;
case R_PPC_COPY:
return reloc_class_copy;
default:
return reloc_class_normal;
}
}
/* Finish up the dynamic sections. */
static bfd_boolean
ppc_elf_finish_dynamic_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
asection *sdyn;
asection *splt;
struct ppc_elf_link_hash_table *htab;
bfd_vma got;
bfd * dynobj;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
#endif
htab = ppc_elf_hash_table (info);
dynobj = elf_hash_table (info)->dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
if (htab->is_vxworks)
splt = bfd_get_section_by_name (dynobj, ".plt");
else
splt = NULL;
got = 0;
if (htab->elf.hgot != NULL)
got = (htab->elf.hgot->root.u.def.value
+ htab->elf.hgot->root.u.def.section->output_section->vma
+ htab->elf.hgot->root.u.def.section->output_offset);
if (htab->elf.dynamic_sections_created)
{
Elf32_External_Dyn *dyncon, *dynconend;
BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
dyncon = (Elf32_External_Dyn *) sdyn->contents;
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
asection *s;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
case DT_PLTGOT:
if (htab->is_vxworks)
s = htab->sgotplt;
else
s = htab->plt;
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
break;
case DT_PLTRELSZ:
dyn.d_un.d_val = htab->relplt->size;
break;
case DT_JMPREL:
s = htab->relplt;
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
break;
case DT_PPC_GOT:
dyn.d_un.d_ptr = got;
break;
case DT_RELASZ:
if (htab->is_vxworks)
{
if (htab->relplt)
dyn.d_un.d_ptr -= htab->relplt->size;
break;
}
continue;
default:
continue;
}
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
}
/* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
easily find the address of the _GLOBAL_OFFSET_TABLE_. */
if (htab->got != NULL)
{
unsigned char *p = htab->got->contents;
bfd_vma val;
p += htab->elf.hgot->root.u.def.value;
if (htab->plt_type == PLT_OLD)
bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
val = 0;
if (sdyn != NULL)
val = sdyn->output_section->vma + sdyn->output_offset;
bfd_put_32 (output_bfd, val, p);
elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
}
/* Fill in the first entry in the VxWorks procedure linkage table. */
if (splt && splt->size > 0)
{
/* Use the right PLT. */
static const bfd_vma *plt_entry = NULL;
plt_entry = info->shared ?
ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
if (!info->shared)
{
bfd_vma got_value =
(htab->elf.hgot->root.u.def.section->output_section->vma
+ htab->elf.hgot->root.u.def.section->output_offset
+ htab->elf.hgot->root.u.def.value);
bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
splt->contents + 0);
bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
splt->contents + 4);
}
else
{
bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
}
bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
if (! info->shared)
{
Elf_Internal_Rela rela;
bfd_byte *loc;
loc = htab->srelplt2->contents;
/* Output the @ha relocation for the first instruction. */
rela.r_offset = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ 2);
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
rela.r_addend = 0;
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
loc += sizeof (Elf32_External_Rela);
/* Output the @l relocation for the second instruction. */
rela.r_offset = (htab->plt->output_section->vma
+ htab->plt->output_offset
+ 6);
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
rela.r_addend = 0;
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
loc += sizeof (Elf32_External_Rela);
/* Fix up the remaining relocations. They may have the wrong
symbol index for _G_O_T_ or _P_L_T_ depending on the order
in which symbols were output. */
while (loc < htab->srelplt2->contents + htab->srelplt2->size)
{
Elf_Internal_Rela rel;
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
loc += sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
loc += sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
loc += sizeof (Elf32_External_Rela);
}
}
}
if (htab->glink != NULL && htab->glink->contents != NULL)
{
unsigned char *p;
unsigned char *endp;
bfd_vma res0;
unsigned int i;
/*
* PIC glink code is the following:
*
* # ith PLT code stub.
* addis 11,30,(plt+(i-1)*4-got)@ha
* lwz 11,(plt+(i-1)*4-got)@l(11)
* mtctr 11
* bctr
*
* # A table of branches, one for each plt entry.
* # The idea is that the plt call stub loads ctr (and r11) with these
* # addresses, so (r11 - res_0) gives the plt index * 4.
* res_0: b PLTresolve
* res_1: b PLTresolve
* .
* # Some number of entries towards the end can be nops
* res_n_m3: nop
* res_n_m2: nop
* res_n_m1:
*
* PLTresolve:
* addis 11,11,(1f-res_0)@ha
* mflr 0
* bcl 20,31,1f
* 1: addi 11,11,(1b-res_0)@l
* mflr 12
* mtlr 0
* sub 11,11,12 # r11 = index * 4
* addis 12,12,(got+4-1b)@ha
* lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
* lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
* mtctr 0
* add 0,11,11
* add 11,0,11 # r11 = index * 12 = reloc offset.
* bctr
*/
static const unsigned int pic_plt_resolve[] =
{
ADDIS_11_11,
MFLR_0,
BCL_20_31,
ADDI_11_11,
MFLR_12,
MTLR_0,
SUB_11_11_12,
ADDIS_12_12,
LWZ_0_12,
LWZ_12_12,
MTCTR_0,
ADD_0_11_11,
ADD_11_0_11,
BCTR,
NOP,
NOP
};
static const unsigned int plt_resolve[] =
{
LIS_12,
ADDIS_11_11,
LWZ_0_12,
ADDI_11_11,
MTCTR_0,
ADD_0_11_11,
LWZ_12_12,
ADD_11_0_11,
BCTR,
NOP,
NOP,
NOP,
NOP,
NOP,
NOP,
NOP
};
if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
abort ();
if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
abort ();
/* Build the branch table, one for each plt entry (less one),
and perhaps some padding. */
p = htab->glink->contents;
p += htab->glink_pltresolve;
endp = htab->glink->contents;
endp += htab->glink->size - GLINK_PLTRESOLVE;
while (p < endp - 8 * 4)
{
bfd_put_32 (output_bfd, B + endp - p, p);
p += 4;
}
while (p < endp)
{
bfd_put_32 (output_bfd, NOP, p);
p += 4;
}
res0 = (htab->glink_pltresolve
+ htab->glink->output_section->vma
+ htab->glink->output_offset);
/* Last comes the PLTresolve stub. */
if (info->shared || info->pie)
{
bfd_vma bcl;
for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
{
bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
p += 4;
}
p -= 4 * ARRAY_SIZE (pic_plt_resolve);
bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
+ htab->glink->output_section->vma
+ htab->glink->output_offset);
bfd_put_32 (output_bfd,
ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
bfd_put_32 (output_bfd,
ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
bfd_put_32 (output_bfd,
ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
{
bfd_put_32 (output_bfd,
LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
bfd_put_32 (output_bfd,
LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
}
else
{
bfd_put_32 (output_bfd,
LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
bfd_put_32 (output_bfd,
LWZ_12_12 + 4, p + 9*4);
}
}
else
{
for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
{
bfd_put_32 (output_bfd, plt_resolve[i], p);
p += 4;
}
p -= 4 * ARRAY_SIZE (plt_resolve);
bfd_put_32 (output_bfd,
LIS_12 + PPC_HA (got + 4), p + 0*4);
bfd_put_32 (output_bfd,
ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
bfd_put_32 (output_bfd,
ADDI_11_11 + PPC_LO (-res0), p + 3*4);
if (PPC_HA (got + 4) == PPC_HA (got + 8))
{
bfd_put_32 (output_bfd,
LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
bfd_put_32 (output_bfd,
LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
}
else
{
bfd_put_32 (output_bfd,
LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
bfd_put_32 (output_bfd,
LWZ_12_12 + 4, p + 6*4);
}
}
}
return TRUE;
}
#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
#define TARGET_LITTLE_NAME "elf32-powerpcle"
#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
#define TARGET_BIG_NAME "elf32-powerpc"
#define ELF_ARCH bfd_arch_powerpc
#define ELF_MACHINE_CODE EM_PPC
#ifdef __QNXTARGET__
#define ELF_MAXPAGESIZE 0x1000
#else
#define ELF_MAXPAGESIZE 0x10000
#endif
#define ELF_MINPAGESIZE 0x1000
#define elf_info_to_howto ppc_elf_info_to_howto
#ifdef EM_CYGNUS_POWERPC
#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
#endif
#ifdef EM_PPC_OLD
#define ELF_MACHINE_ALT2 EM_PPC_OLD
#endif
#define elf_backend_plt_not_loaded 1
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_rela_normal 1
#define bfd_elf32_mkobject ppc_elf_mkobject
#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
#define elf_backend_object_p ppc_elf_object_p
#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
#define elf_backend_relocate_section ppc_elf_relocate_section
#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
#define elf_backend_check_relocs ppc_elf_check_relocs
#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
#define elf_backend_fake_sections ppc_elf_fake_sections
#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
#define elf_backend_final_write_processing ppc_elf_final_write_processing
#define elf_backend_write_section ppc_elf_write_section
#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
#define elf_backend_action_discarded ppc_elf_action_discarded
#include "elf32-target.h"
/* VxWorks Target */
#undef TARGET_LITTLE_SYM
#undef TARGET_LITTLE_NAME
#undef TARGET_BIG_SYM
#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
/* VxWorks uses the elf default section flags for .plt. */
static const struct bfd_elf_special_section *
ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
{
if (sec->name == NULL)
return NULL;
if (strcmp (sec->name, ".plt") == 0)
return _bfd_elf_get_sec_type_attr (abfd, sec);
return ppc_elf_get_sec_type_attr (abfd, sec);
}
/* Like ppc_elf_link_hash_table_create, but overrides
appropriately for VxWorks. */
static struct bfd_link_hash_table *
ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
{
struct bfd_link_hash_table *ret;
ret = ppc_elf_link_hash_table_create (abfd);
if (ret)
{
struct ppc_elf_link_hash_table *htab
= (struct ppc_elf_link_hash_table *)ret;
htab->is_vxworks = 1;
htab->plt_type = PLT_VXWORKS;
htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
}
return ret;
}
/* Tweak magic VxWorks symbols as they are loaded. */
static bfd_boolean
ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
struct bfd_link_info *info,
Elf_Internal_Sym *sym,
const char **namep ATTRIBUTE_UNUSED,
flagword *flagsp ATTRIBUTE_UNUSED,
asection **secp,
bfd_vma *valp)
{
if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
valp))
return FALSE;
return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
}
/* Tweak magic VxWorks symbols as they are written to the output file. */
static bfd_boolean
elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info *info
ATTRIBUTE_UNUSED,
const char *name,
Elf_Internal_Sym *sym,
asection *input_sec ATTRIBUTE_UNUSED,
struct elf_link_hash_entry *h
ATTRIBUTE_UNUSED)
{
/* Ignore the first dummy symbol. */
if (!name)
return TRUE;
return elf_vxworks_link_output_symbol_hook (name, sym);
}
static void
ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
{
ppc_elf_final_write_processing(abfd, linker);
elf_vxworks_final_write_processing(abfd, linker);
}
/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
define it. */
#undef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym 1
#undef elf_backend_want_got_plt
#define elf_backend_want_got_plt 1
#undef elf_backend_got_symbol_offset
#define elf_backend_got_symbol_offset 0
#undef elf_backend_plt_not_loaded
#define elf_backend_plt_not_loaded 0
#undef elf_backend_plt_readonly
#define elf_backend_plt_readonly 1
#undef elf_backend_got_header_size
#define elf_backend_got_header_size 12
#undef bfd_elf32_bfd_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_create \
ppc_elf_vxworks_link_hash_table_create
#undef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook \
ppc_elf_vxworks_add_symbol_hook
#undef elf_backend_link_output_symbol_hook
#define elf_backend_link_output_symbol_hook \
elf_i386_vxworks_link_output_symbol_hook
#undef elf_backend_final_write_processing
#define elf_backend_final_write_processing \
ppc_elf_vxworks_final_write_processing
#undef elf_backend_get_sec_type_attr
#define elf_backend_get_sec_type_attr \
ppc_elf_vxworks_get_sec_type_attr
#undef elf_backend_emit_relocs
#define elf_backend_emit_relocs \
elf_vxworks_emit_relocs
#undef elf32_bed
#define elf32_bed ppc_elf_vxworks_bed
#include "elf32-target.h"
|