1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13171
13172
13173
13174
13175
13176
13177
13178
13179
13180
13181
13182
13183
13184
13185
13186
13187
13188
13189
13190
13191
13192
13193
13194
13195
13196
13197
13198
13199
13200
13201
13202
13203
13204
13205
13206
13207
13208
13209
13210
13211
13212
13213
13214
13215
13216
13217
13218
13219
13220
13221
13222
13223
13224
13225
13226
13227
13228
13229
13230
13231
13232
13233
13234
13235
13236
13237
13238
13239
13240
13241
13242
13243
13244
13245
13246
13247
13248
13249
13250
13251
13252
13253
13254
13255
13256
13257
13258
13259
13260
13261
13262
13263
13264
13265
13266
13267
13268
13269
13270
13271
13272
13273
13274
13275
13276
13277
13278
13279
13280
13281
13282
13283
13284
13285
13286
13287
13288
13289
13290
13291
13292
13293
13294
13295
13296
13297
13298
13299
13300
13301
13302
13303
13304
13305
13306
13307
13308
13309
13310
13311
13312
13313
13314
13315
13316
13317
13318
13319
13320
13321
13322
13323
13324
13325
13326
13327
13328
13329
13330
13331
13332
13333
13334
13335
13336
13337
13338
13339
13340
13341
13342
13343
13344
13345
13346
13347
13348
13349
13350
13351
13352
13353
13354
13355
13356
13357
13358
13359
13360
13361
13362
13363
13364
13365
13366
13367
13368
13369
13370
13371
13372
13373
13374
13375
13376
13377
13378
13379
13380
13381
13382
13383
13384
13385
13386
13387
13388
13389
13390
13391
13392
13393
13394
13395
13396
13397
13398
13399
13400
13401
13402
13403
13404
13405
13406
13407
13408
13409
13410
13411
13412
13413
13414
13415
13416
13417
13418
13419
13420
13421
13422
13423
13424
13425
13426
13427
13428
13429
13430
13431
13432
13433
13434
13435
13436
13437
13438
13439
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13461
13462
13463
13464
13465
13466
13467
13468
13469
13470
13471
13472
13473
13474
13475
13476
13477
13478
13479
13480
13481
13482
13483
13484
13485
13486
13487
13488
13489
13490
13491
13492
13493
13494
13495
13496
13497
13498
13499
13500
13501
13502
13503
13504
13505
13506
13507
13508
13509
13510
13511
13512
13513
13514
13515
13516
13517
13518
13519
13520
13521
13522
13523
13524
13525
13526
13527
13528
13529
13530
13531
13532
13533
13534
13535
13536
13537
13538
13539
13540
13541
13542
13543
13544
13545
13546
13547
13548
13549
13550
13551
13552
13553
13554
13555
13556
13557
13558
13559
13560
13561
13562
13563
13564
13565
13566
13567
13568
13569
13570
13571
13572
13573
13574
13575
13576
13577
13578
13579
13580
13581
13582
13583
13584
13585
13586
13587
13588
13589
13590
13591
13592
13593
13594
13595
13596
13597
13598
13599
13600
13601
13602
13603
13604
13605
13606
13607
13608
13609
13610
13611
13612
13613
13614
13615
13616
13617
13618
13619
13620
13621
13622
13623
13624
13625
13626
13627
13628
13629
13630
13631
13632
13633
13634
13635
13636
13637
13638
13639
13640
13641
13642
13643
13644
13645
13646
13647
13648
13649
13650
13651
13652
13653
13654
13655
13656
13657
13658
13659
13660
13661
13662
13663
13664
13665
13666
13667
13668
13669
13670
13671
13672
13673
13674
13675
13676
13677
13678
13679
13680
13681
13682
13683
13684
13685
13686
13687
13688
13689
13690
13691
13692
13693
13694
13695
13696
13697
13698
13699
13700
13701
13702
13703
13704
13705
13706
13707
13708
13709
13710
13711
13712
13713
13714
13715
13716
13717
13718
13719
13720
13721
13722
13723
13724
13725
13726
13727
13728
13729
13730
13731
13732
13733
13734
13735
13736
13737
13738
13739
13740
13741
13742
13743
13744
13745
13746
13747
13748
13749
13750
13751
13752
13753
13754
13755
13756
13757
13758
13759
13760
13761
13762
13763
13764
13765
13766
13767
13768
13769
13770
13771
13772
13773
13774
13775
13776
13777
13778
13779
13780
13781
13782
13783
13784
13785
13786
13787
13788
13789
13790
13791
13792
13793
13794
13795
13796
13797
13798
13799
13800
13801
13802
13803
13804
13805
13806
13807
13808
13809
13810
13811
13812
13813
13814
13815
13816
13817
13818
13819
13820
13821
13822
13823
13824
13825
13826
13827
13828
13829
13830
13831
13832
13833
13834
13835
13836
13837
13838
13839
13840
13841
13842
13843
13844
13845
13846
13847
13848
13849
13850
13851
13852
13853
13854
13855
13856
13857
13858
13859
13860
13861
13862
13863
13864
13865
13866
13867
13868
13869
13870
13871
13872
13873
13874
13875
13876
13877
13878
13879
13880
13881
13882
13883
13884
13885
13886
13887
13888
13889
13890
13891
13892
13893
13894
13895
13896
13897
13898
13899
13900
13901
13902
13903
13904
13905
13906
13907
13908
13909
13910
13911
13912
13913
13914
13915
13916
13917
13918
13919
13920
13921
13922
13923
13924
13925
13926
13927
13928
13929
13930
13931
13932
13933
13934
13935
13936
13937
13938
13939
13940
13941
13942
13943
13944
13945
13946
13947
13948
13949
13950
13951
13952
13953
13954
13955
13956
13957
13958
13959
13960
13961
13962
13963
13964
13965
13966
13967
13968
13969
13970
13971
13972
13973
13974
13975
13976
13977
13978
13979
13980
13981
13982
13983
13984
13985
13986
13987
13988
13989
13990
13991
13992
13993
13994
13995
13996
13997
13998
13999
14000
14001
14002
14003
14004
14005
14006
14007
14008
14009
14010
14011
14012
14013
14014
14015
14016
14017
14018
14019
14020
14021
14022
14023
14024
14025
14026
14027
14028
14029
14030
14031
14032
14033
14034
14035
14036
14037
14038
14039
14040
14041
14042
14043
14044
14045
14046
14047
14048
14049
14050
14051
14052
14053
14054
14055
14056
14057
14058
14059
14060
14061
14062
14063
14064
14065
14066
14067
14068
14069
14070
14071
14072
14073
14074
14075
14076
14077
14078
14079
14080
14081
14082
14083
14084
14085
14086
14087
14088
14089
14090
14091
14092
14093
14094
14095
14096
14097
14098
14099
14100
14101
14102
14103
14104
14105
14106
14107
14108
14109
14110
14111
14112
14113
14114
14115
14116
14117
14118
14119
14120
14121
14122
14123
14124
14125
14126
14127
14128
14129
14130
14131
14132
14133
14134
14135
14136
14137
14138
14139
14140
14141
14142
14143
14144
14145
14146
14147
14148
14149
14150
14151
14152
14153
14154
14155
14156
14157
14158
14159
14160
14161
14162
14163
14164
14165
14166
14167
14168
14169
14170
14171
14172
14173
14174
14175
14176
14177
14178
14179
14180
14181
14182
14183
14184
14185
14186
14187
14188
14189
14190
14191
14192
14193
14194
14195
14196
14197
14198
14199
14200
14201
14202
14203
14204
14205
14206
14207
14208
14209
14210
14211
14212
14213
14214
14215
14216
14217
14218
14219
14220
14221
14222
14223
14224
14225
14226
14227
14228
14229
14230
14231
14232
14233
14234
14235
14236
14237
14238
14239
14240
14241
14242
14243
14244
14245
14246
14247
14248
14249
14250
14251
14252
14253
14254
14255
14256
14257
14258
14259
14260
14261
14262
14263
14264
14265
14266
14267
14268
14269
14270
14271
14272
14273
14274
14275
14276
14277
14278
14279
14280
14281
14282
14283
14284
14285
14286
14287
14288
14289
14290
14291
14292
14293
14294
14295
14296
14297
14298
14299
14300
14301
14302
14303
14304
14305
14306
14307
14308
14309
14310
14311
14312
14313
14314
14315
14316
14317
14318
14319
14320
14321
14322
14323
14324
14325
14326
14327
14328
14329
14330
14331
14332
14333
14334
14335
14336
14337
14338
14339
14340
14341
14342
14343
14344
14345
14346
14347
14348
14349
14350
14351
14352
14353
14354
14355
14356
14357
14358
14359
14360
14361
14362
14363
14364
14365
14366
14367
14368
14369
14370
14371
14372
14373
14374
14375
14376
14377
14378
14379
14380
14381
14382
14383
14384
14385
14386
14387
14388
14389
14390
14391
14392
14393
14394
14395
14396
14397
14398
14399
14400
14401
14402
14403
14404
14405
14406
14407
14408
14409
14410
14411
14412
14413
14414
14415
14416
14417
14418
14419
14420
14421
14422
14423
14424
14425
14426
14427
14428
14429
14430
14431
14432
14433
14434
14435
14436
14437
14438
14439
14440
14441
14442
14443
14444
14445
14446
14447
14448
14449
14450
14451
14452
14453
14454
14455
14456
14457
14458
14459
14460
14461
14462
14463
14464
14465
14466
14467
14468
14469
14470
14471
14472
14473
14474
14475
14476
14477
14478
14479
14480
14481
14482
14483
14484
14485
14486
14487
14488
14489
14490
14491
14492
14493
14494
14495
14496
14497
14498
14499
14500
14501
14502
14503
14504
14505
14506
14507
14508
14509
14510
14511
14512
14513
14514
14515
14516
14517
14518
14519
14520
14521
14522
14523
14524
14525
14526
14527
14528
14529
14530
14531
14532
14533
14534
14535
14536
14537
14538
14539
14540
14541
14542
14543
14544
14545
14546
14547
14548
14549
14550
14551
14552
14553
14554
14555
14556
14557
14558
14559
14560
14561
14562
14563
14564
14565
14566
14567
14568
14569
14570
14571
14572
14573
14574
14575
14576
14577
14578
14579
14580
14581
14582
14583
14584
14585
14586
14587
14588
14589
14590
14591
14592
14593
14594
14595
14596
14597
14598
14599
14600
14601
14602
14603
14604
14605
14606
14607
14608
14609
14610
14611
14612
14613
14614
14615
14616
14617
14618
14619
14620
14621
14622
14623
14624
14625
14626
14627
14628
14629
14630
14631
14632
14633
14634
14635
14636
14637
14638
14639
14640
14641
14642
14643
14644
14645
14646
14647
14648
14649
14650
14651
14652
14653
14654
14655
14656
14657
14658
14659
14660
14661
14662
14663
14664
14665
14666
14667
14668
14669
14670
14671
14672
14673
14674
14675
14676
14677
14678
14679
14680
14681
14682
14683
14684
14685
14686
14687
14688
14689
14690
14691
14692
14693
14694
14695
14696
14697
14698
14699
14700
14701
14702
14703
14704
14705
14706
14707
14708
14709
14710
14711
14712
14713
14714
14715
14716
14717
14718
14719
14720
14721
14722
14723
14724
14725
14726
14727
14728
14729
14730
14731
14732
14733
14734
14735
14736
14737
14738
14739
14740
14741
14742
14743
14744
14745
14746
14747
14748
14749
14750
14751
14752
14753
14754
14755
14756
14757
14758
14759
14760
14761
14762
14763
14764
14765
14766
14767
14768
14769
14770
14771
14772
14773
14774
14775
14776
14777
14778
14779
14780
14781
14782
14783
14784
14785
14786
14787
14788
14789
14790
14791
14792
14793
14794
14795
14796
14797
14798
14799
14800
14801
14802
14803
14804
14805
14806
14807
14808
14809
14810
14811
14812
14813
14814
14815
14816
14817
14818
14819
14820
14821
14822
14823
14824
14825
14826
14827
14828
14829
14830
14831
14832
14833
14834
14835
14836
14837
14838
14839
14840
14841
14842
14843
14844
14845
14846
14847
14848
14849
14850
14851
14852
14853
14854
14855
14856
14857
14858
14859
14860
14861
14862
14863
14864
14865
14866
14867
14868
14869
14870
14871
14872
14873
14874
14875
14876
14877
14878
14879
14880
14881
14882
14883
14884
14885
14886
14887
14888
14889
14890
14891
14892
14893
14894
14895
14896
14897
14898
14899
14900
14901
14902
14903
14904
14905
14906
14907
14908
14909
14910
14911
14912
14913
14914
14915
14916
14917
14918
14919
14920
14921
14922
14923
14924
14925
14926
14927
14928
14929
14930
14931
14932
14933
14934
14935
14936
14937
14938
14939
14940
14941
14942
14943
14944
14945
14946
14947
14948
14949
14950
14951
14952
14953
14954
14955
14956
14957
14958
14959
14960
14961
14962
14963
14964
14965
14966
14967
14968
14969
14970
14971
14972
14973
14974
14975
14976
14977
14978
14979
14980
14981
14982
14983
14984
14985
14986
14987
14988
14989
14990
14991
14992
14993
14994
14995
14996
14997
14998
14999
15000
15001
15002
15003
15004
15005
15006
15007
15008
15009
15010
15011
15012
15013
15014
15015
15016
15017
15018
15019
15020
15021
15022
15023
15024
15025
15026
15027
15028
15029
15030
15031
15032
15033
15034
15035
15036
15037
15038
15039
15040
15041
15042
15043
15044
15045
15046
15047
15048
15049
15050
15051
15052
15053
15054
15055
15056
15057
15058
15059
15060
15061
15062
15063
15064
15065
15066
15067
15068
15069
15070
15071
15072
15073
15074
15075
15076
15077
15078
15079
15080
15081
15082
15083
15084
15085
15086
15087
15088
15089
15090
15091
15092
15093
15094
15095
15096
15097
15098
15099
15100
15101
15102
15103
15104
15105
15106
15107
15108
15109
15110
15111
15112
15113
15114
15115
15116
15117
15118
15119
15120
15121
15122
15123
15124
15125
15126
15127
15128
15129
15130
15131
15132
15133
15134
15135
15136
15137
15138
15139
15140
15141
15142
15143
15144
15145
15146
15147
15148
15149
15150
15151
15152
15153
15154
15155
15156
15157
15158
15159
15160
15161
15162
15163
15164
15165
15166
15167
15168
15169
15170
15171
15172
15173
15174
15175
15176
15177
15178
15179
15180
15181
15182
15183
15184
15185
15186
15187
15188
15189
15190
15191
15192
15193
15194
15195
15196
15197
15198
15199
15200
15201
15202
15203
15204
15205
15206
15207
15208
15209
15210
15211
15212
15213
15214
15215
15216
15217
15218
15219
15220
15221
15222
15223
15224
15225
15226
15227
15228
15229
15230
15231
15232
15233
15234
15235
15236
15237
15238
15239
15240
15241
15242
15243
15244
15245
15246
15247
15248
15249
15250
15251
15252
15253
15254
15255
15256
15257
15258
15259
15260
15261
15262
15263
15264
15265
15266
15267
15268
15269
15270
15271
15272
15273
15274
15275
15276
15277
15278
15279
15280
15281
15282
15283
15284
15285
15286
15287
15288
15289
15290
15291
15292
15293
15294
15295
15296
15297
15298
15299
15300
15301
15302
15303
15304
15305
15306
15307
15308
15309
15310
15311
15312
15313
15314
15315
15316
15317
15318
15319
15320
15321
15322
15323
15324
15325
15326
15327
15328
15329
15330
15331
15332
15333
15334
15335
15336
15337
15338
15339
15340
15341
15342
15343
15344
15345
15346
15347
15348
15349
15350
15351
15352
15353
15354
15355
15356
15357
15358
15359
15360
15361
15362
15363
15364
15365
15366
15367
15368
15369
15370
15371
15372
15373
15374
15375
15376
15377
15378
15379
15380
15381
15382
15383
15384
15385
15386
15387
15388
15389
15390
15391
15392
15393
15394
15395
15396
15397
15398
15399
15400
15401
15402
15403
15404
15405
15406
15407
15408
15409
15410
15411
15412
15413
15414
15415
15416
15417
15418
15419
15420
15421
15422
15423
15424
15425
15426
15427
15428
15429
15430
15431
15432
15433
15434
15435
15436
15437
15438
15439
15440
15441
15442
15443
15444
15445
15446
15447
15448
15449
15450
15451
15452
15453
15454
15455
15456
15457
15458
15459
15460
15461
15462
15463
15464
15465
15466
15467
15468
15469
15470
15471
15472
15473
15474
15475
15476
15477
15478
15479
15480
15481
15482
15483
15484
15485
15486
15487
15488
15489
15490
15491
15492
15493
15494
15495
15496
15497
15498
15499
15500
15501
15502
15503
15504
15505
15506
15507
15508
15509
15510
15511
15512
15513
15514
15515
15516
15517
15518
15519
15520
15521
15522
15523
15524
15525
15526
15527
15528
15529
15530
15531
15532
15533
15534
15535
15536
15537
15538
15539
15540
15541
15542
15543
15544
15545
15546
15547
15548
15549
15550
15551
15552
15553
15554
15555
15556
15557
15558
15559
15560
15561
15562
15563
15564
15565
15566
15567
15568
15569
15570
15571
15572
15573
15574
15575
15576
15577
15578
15579
15580
15581
15582
15583
15584
15585
15586
15587
15588
15589
15590
15591
15592
15593
15594
15595
15596
15597
15598
15599
15600
15601
15602
15603
15604
15605
15606
15607
15608
15609
15610
15611
15612
15613
15614
15615
15616
15617
15618
15619
15620
15621
15622
15623
15624
15625
15626
15627
15628
15629
15630
15631
15632
15633
15634
15635
15636
15637
15638
15639
15640
15641
15642
15643
15644
15645
15646
15647
15648
15649
15650
15651
15652
15653
15654
15655
15656
15657
15658
15659
15660
15661
15662
15663
15664
15665
15666
15667
15668
15669
15670
15671
15672
15673
15674
15675
15676
15677
15678
15679
15680
15681
15682
15683
15684
15685
15686
15687
15688
15689
15690
15691
15692
15693
15694
15695
15696
15697
15698
15699
15700
15701
15702
15703
15704
15705
15706
15707
15708
15709
15710
15711
15712
15713
15714
15715
15716
15717
15718
15719
15720
15721
15722
15723
15724
15725
15726
15727
15728
15729
15730
15731
15732
15733
15734
15735
15736
15737
15738
15739
15740
15741
15742
15743
15744
15745
15746
15747
15748
15749
15750
15751
15752
15753
15754
15755
15756
15757
15758
15759
15760
15761
15762
15763
15764
15765
15766
15767
15768
15769
15770
15771
15772
15773
15774
15775
15776
15777
15778
15779
15780
15781
15782
15783
15784
15785
15786
15787
15788
15789
15790
15791
15792
15793
15794
15795
15796
15797
15798
15799
15800
15801
15802
15803
15804
15805
15806
15807
15808
15809
15810
15811
15812
15813
15814
15815
15816
15817
15818
15819
|
/* 32-bit ELF support for ARM
Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010, 2011 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include <limits.h>
#include "bfd.h"
#include "libiberty.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf-vxworks.h"
#include "elf/arm.h"
/* Return the relocation section associated with NAME. HTAB is the
bfd's elf32_arm_link_hash_entry. */
#define RELOC_SECTION(HTAB, NAME) \
((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
/* Return size of a relocation entry. HTAB is the bfd's
elf32_arm_link_hash_entry. */
#define RELOC_SIZE(HTAB) \
((HTAB)->use_rel \
? sizeof (Elf32_External_Rel) \
: sizeof (Elf32_External_Rela))
/* Return function to swap relocations in. HTAB is the bfd's
elf32_arm_link_hash_entry. */
#define SWAP_RELOC_IN(HTAB) \
((HTAB)->use_rel \
? bfd_elf32_swap_reloc_in \
: bfd_elf32_swap_reloca_in)
/* Return function to swap relocations out. HTAB is the bfd's
elf32_arm_link_hash_entry. */
#define SWAP_RELOC_OUT(HTAB) \
((HTAB)->use_rel \
? bfd_elf32_swap_reloc_out \
: bfd_elf32_swap_reloca_out)
#define elf_info_to_howto 0
#define elf_info_to_howto_rel elf32_arm_info_to_howto
#define ARM_ELF_ABI_VERSION 0
#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
static bfd_boolean elf32_arm_write_section (bfd *output_bfd,
struct bfd_link_info *link_info,
asection *sec,
bfd_byte *contents);
/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
in that slot. */
static reloc_howto_type elf32_arm_howto_table_1[] =
{
/* No relocation. */
HOWTO (R_ARM_NONE, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_PC24, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_PC24", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* 32 bit absolute */
HOWTO (R_ARM_ABS32, /* 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_ARM_ABS32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* standard 32bit pc-relative reloc */
HOWTO (R_ARM_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_ARM_REL32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
HOWTO (R_ARM_LDR_PC_G0, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_PC_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* 16 bit absolute */
HOWTO (R_ARM_ABS16, /* 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_ARM_ABS16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 12 bit absolute */
HOWTO (R_ARM_ABS12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ABS12", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_ABS5, /* type */
6, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
5, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_ABS5", /* name */
FALSE, /* partial_inplace */
0x000007e0, /* src_mask */
0x000007e0, /* dst_mask */
FALSE), /* pcrel_offset */
/* 8 bit absolute */
HOWTO (R_ARM_ABS8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ABS8", /* name */
FALSE, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_SBREL32, /* type */
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_ARM_SBREL32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_CALL, /* type */
1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_CALL", /* name */
FALSE, /* partial_inplace */
0x07ff07ff, /* src_mask */
0x07ff07ff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_PC8, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_PC8", /* name */
FALSE, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_BREL_ADJ, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_BREL_ADJ", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_DESC, /* 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_ARM_TLS_DESC", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_SWI8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_SWI8", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
/* BLX instruction for the ARM. */
HOWTO (R_ARM_XPC25, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
25, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_XPC25", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* BLX instruction for the Thumb. */
HOWTO (R_ARM_THM_XPC22, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
22, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_XPC22", /* name */
FALSE, /* partial_inplace */
0x07ff07ff, /* src_mask */
0x07ff07ff, /* dst_mask */
TRUE), /* pcrel_offset */
/* Dynamic TLS relocations. */
HOWTO (R_ARM_TLS_DTPMOD32, /* 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_ARM_TLS_DTPMOD32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_DTPOFF32, /* 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_ARM_TLS_DTPOFF32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_TPOFF32, /* 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_ARM_TLS_TPOFF32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Relocs used in ARM Linux */
HOWTO (R_ARM_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_ARM_COPY", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_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_ARM_GLOB_DAT", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_JUMP_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_ARM_JUMP_SLOT", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_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_ARM_RELATIVE", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_GOTOFF32, /* 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_ARM_GOTOFF32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_GOTPC, /* 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_ARM_GOTPC", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_GOT32, /* 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_ARM_GOT32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_PLT32, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_PLT32", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_CALL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_CALL", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_JUMP24, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_JUMP24", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_JUMP24, /* type */
1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_JUMP24", /* name */
FALSE, /* partial_inplace */
0x07ff2fff, /* src_mask */
0x07ff2fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_BASE_ABS, /* type */
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_ARM_BASE_ABS", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PCREL7_0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PCREL_7_0", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PCREL15_8, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
TRUE, /* pc_relative */
8, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PCREL_15_8",/* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PCREL23_15, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
TRUE, /* pc_relative */
16, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PCREL_23_15",/* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_SBREL_11_0",/* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
12, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SBREL_19_12",/* name */
FALSE, /* partial_inplace */
0x000ff000, /* src_mask */
0x000ff000, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
20, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SBREL_27_20",/* name */
FALSE, /* partial_inplace */
0x0ff00000, /* src_mask */
0x0ff00000, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TARGET1, /* type */
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_ARM_TARGET1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_ROSEGREL32, /* type */
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_ARM_ROSEGREL32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_V4BX, /* type */
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_ARM_V4BX", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TARGET2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_TARGET2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_PREL31, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
31, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_PREL31", /* name */
FALSE, /* partial_inplace */
0x7fffffff, /* src_mask */
0x7fffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_MOVW_ABS_NC, /* type */
0, /* rightshift */
2, /* 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_ARM_MOVW_ABS_NC", /* name */
FALSE, /* partial_inplace */
0x000f0fff, /* src_mask */
0x000f0fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_MOVT_ABS, /* 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_ARM_MOVT_ABS", /* name */
FALSE, /* partial_inplace */
0x000f0fff, /* src_mask */
0x000f0fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_MOVW_PREL_NC, /* type */
0, /* rightshift */
2, /* 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_ARM_MOVW_PREL_NC", /* name */
FALSE, /* partial_inplace */
0x000f0fff, /* src_mask */
0x000f0fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_MOVT_PREL, /* type */
0, /* rightshift */
2, /* 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_ARM_MOVT_PREL", /* name */
FALSE, /* partial_inplace */
0x000f0fff, /* src_mask */
0x000f0fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
0, /* rightshift */
2, /* 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_ARM_THM_MOVW_ABS_NC",/* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVT_ABS, /* 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_ARM_THM_MOVT_ABS", /* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
0, /* rightshift */
2, /* 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_ARM_THM_MOVW_PREL_NC",/* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVT_PREL, /* type */
0, /* rightshift */
2, /* 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_ARM_THM_MOVT_PREL", /* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_JUMP19, /* type */
1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
19, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_JUMP19", /* name */
FALSE, /* partial_inplace */
0x043f2fff, /* src_mask */
0x043f2fff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_JUMP6, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
6, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_JUMP6", /* name */
FALSE, /* partial_inplace */
0x02f8, /* src_mask */
0x02f8, /* dst_mask */
TRUE), /* pcrel_offset */
/* These are declared as 13-bit signed relocations because we can
address -4095 .. 4095(base) by altering ADDW to SUBW or vice
versa. */
HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
13, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_ALU_PREL_11_0",/* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_PC12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
13, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_PC12", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ABS32_NOI, /* type */
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_ARM_ABS32_NOI", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_REL32_NOI, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_REL32_NOI", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Group relocations. */
HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PC_G0_NC", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PC_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PC_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PC_G1_NC", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PC_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PC_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_PC_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_PC_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDR_PC_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_PC_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDR_PC_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_PC_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDRS_PC_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDRS_PC_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDRS_PC_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDRS_PC_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDRS_PC_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDRS_PC_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDC_PC_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDC_PC_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDC_PC_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDC_PC_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDC_PC_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDC_PC_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SB_G0_NC", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SB_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SB_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SB_G1_NC", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SB_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SB_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_ALU_SB_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_ALU_SB_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDR_SB_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_SB_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDR_SB_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_SB_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDR_SB_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDR_SB_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDRS_SB_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDRS_SB_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDRS_SB_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDRS_SB_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDRS_SB_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDRS_SB_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDC_SB_G0, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDC_SB_G0", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDC_SB_G1, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDC_SB_G1", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_LDC_SB_G2, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_LDC_SB_G2", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* End of group relocations. */
HOWTO (R_ARM_MOVW_BREL_NC, /* type */
0, /* rightshift */
2, /* 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_ARM_MOVW_BREL_NC", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_MOVT_BREL, /* 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_ARM_MOVT_BREL", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_MOVW_BREL, /* type */
0, /* rightshift */
2, /* 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_ARM_MOVW_BREL", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
0, /* rightshift */
2, /* 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_ARM_THM_MOVW_BREL_NC",/* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVT_BREL, /* 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_ARM_THM_MOVT_BREL", /* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_MOVW_BREL, /* type */
0, /* rightshift */
2, /* 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_ARM_THM_MOVW_BREL", /* name */
FALSE, /* partial_inplace */
0x040f70ff, /* src_mask */
0x040f70ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_GOTDESC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
NULL, /* special_function */
"R_ARM_TLS_GOTDESC", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_CALL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_TLS_CALL", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_DESCSEQ, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_TLS_DESCSEQ", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_TLS_CALL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_TLS_CALL", /* name */
FALSE, /* partial_inplace */
0x07ff07ff, /* src_mask */
0x07ff07ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_PLT32_ABS, /* type */
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_ARM_PLT32_ABS", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_GOT_ABS, /* type */
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_ARM_GOT_ABS", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_GOT_PREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_GOT_PREL", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_GOT_BREL12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_GOT_BREL12", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_GOTOFF12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_GOTOFF12", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
/* GNU extension to record C++ vtable member usage */
HOWTO (R_ARM_GNU_VTENTRY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
"R_ARM_GNU_VTENTRY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
HOWTO (R_ARM_GNU_VTINHERIT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_ARM_GNU_VTINHERIT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_THM_JUMP11, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
11, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_JUMP11", /* name */
FALSE, /* partial_inplace */
0x000007ff, /* src_mask */
0x000007ff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_ARM_THM_JUMP8, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_JUMP8", /* name */
FALSE, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
TRUE), /* pcrel_offset */
/* TLS relocations */
HOWTO (R_ARM_TLS_GD32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
NULL, /* special_function */
"R_ARM_TLS_GD32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_LDM32, /* 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_ARM_TLS_LDM32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_LDO32, /* 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_ARM_TLS_LDO32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_IE32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
NULL, /* special_function */
"R_ARM_TLS_IE32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_LE32, /* 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_ARM_TLS_LE32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_LDO12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_TLS_LDO12", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_LE12, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_TLS_LE12", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_TLS_IE12GP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_TLS_IE12GP", /* name */
FALSE, /* partial_inplace */
0x00000fff, /* src_mask */
0x00000fff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 112-127 private relocations. */
EMPTY_HOWTO (112),
EMPTY_HOWTO (113),
EMPTY_HOWTO (114),
EMPTY_HOWTO (115),
EMPTY_HOWTO (116),
EMPTY_HOWTO (117),
EMPTY_HOWTO (118),
EMPTY_HOWTO (119),
EMPTY_HOWTO (120),
EMPTY_HOWTO (121),
EMPTY_HOWTO (122),
EMPTY_HOWTO (123),
EMPTY_HOWTO (124),
EMPTY_HOWTO (125),
EMPTY_HOWTO (126),
EMPTY_HOWTO (127),
/* R_ARM_ME_TOO, obsolete. */
EMPTY_HOWTO (128),
HOWTO (R_ARM_THM_TLS_DESCSEQ, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_TLS_DESCSEQ",/* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
};
/* 160 onwards: */
static reloc_howto_type elf32_arm_howto_table_2[1] =
{
HOWTO (R_ARM_IRELATIVE, /* 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_ARM_IRELATIVE", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE) /* pcrel_offset */
};
/* 249-255 extended, currently unused, relocations: */
static reloc_howto_type elf32_arm_howto_table_3[4] =
{
HOWTO (R_ARM_RREL32, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_RREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_RABS32, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_RABS32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_RPC24, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_RPC24", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_ARM_RBASE, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_RBASE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE) /* pcrel_offset */
};
static reloc_howto_type *
elf32_arm_howto_from_type (unsigned int r_type)
{
if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
return &elf32_arm_howto_table_1[r_type];
if (r_type == R_ARM_IRELATIVE)
return &elf32_arm_howto_table_2[r_type - R_ARM_IRELATIVE];
if (r_type >= R_ARM_RREL32
&& r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_3))
return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32];
return NULL;
}
static void
elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
Elf_Internal_Rela * elf_reloc)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (elf_reloc->r_info);
bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
}
struct elf32_arm_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
/* All entries in this list must also be present in elf32_arm_howto_table. */
static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
{
{BFD_RELOC_NONE, R_ARM_NONE},
{BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
{BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
{BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
{BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
{BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
{BFD_RELOC_32, R_ARM_ABS32},
{BFD_RELOC_32_PCREL, R_ARM_REL32},
{BFD_RELOC_8, R_ARM_ABS8},
{BFD_RELOC_16, R_ARM_ABS16},
{BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
{BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
{BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
{BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
{BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
{BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
{BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
{BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
{BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
{BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
{BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
{BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
{BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
{BFD_RELOC_ARM_GOT_PREL, R_ARM_GOT_PREL},
{BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
{BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
{BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
{BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
{BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
{BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
{BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
{BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
{BFD_RELOC_ARM_TLS_GOTDESC, R_ARM_TLS_GOTDESC},
{BFD_RELOC_ARM_TLS_CALL, R_ARM_TLS_CALL},
{BFD_RELOC_ARM_THM_TLS_CALL, R_ARM_THM_TLS_CALL},
{BFD_RELOC_ARM_TLS_DESCSEQ, R_ARM_TLS_DESCSEQ},
{BFD_RELOC_ARM_THM_TLS_DESCSEQ, R_ARM_THM_TLS_DESCSEQ},
{BFD_RELOC_ARM_TLS_DESC, R_ARM_TLS_DESC},
{BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
{BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
{BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
{BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
{BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
{BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
{BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
{BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
{BFD_RELOC_ARM_IRELATIVE, R_ARM_IRELATIVE},
{BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
{BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
{BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
{BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
{BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
{BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
{BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
{BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
{BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
{BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
{BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
{BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
{BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
{BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
{BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
{BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
{BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
{BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
{BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
{BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
{BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
{BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
{BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
{BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
{BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
{BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
{BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
{BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
{BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
{BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
{BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
{BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
{BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
{BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
{BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
{BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
{BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
{BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
{BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
};
static reloc_howto_type *
elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
return NULL;
}
static reloc_howto_type *
elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
if (elf32_arm_howto_table_1[i].name != NULL
&& strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
return &elf32_arm_howto_table_1[i];
for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
if (elf32_arm_howto_table_2[i].name != NULL
&& strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
return &elf32_arm_howto_table_2[i];
for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_3); i++)
if (elf32_arm_howto_table_3[i].name != NULL
&& strcasecmp (elf32_arm_howto_table_3[i].name, r_name) == 0)
return &elf32_arm_howto_table_3[i];
return NULL;
}
/* Support for core dump NOTE sections. */
static bfd_boolean
elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
size_t size;
switch (note->descsz)
{
default:
return FALSE;
case 148: /* Linux/ARM 32-bit. */
/* pr_cursig */
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
size = 72;
break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
size, note->descpos + offset);
}
static bfd_boolean
elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->descsz)
{
default:
return FALSE;
case 124: /* Linux/ARM elf_prpsinfo. */
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
elf_tdata (abfd)->core_command
= _bfd_elfcore_strndup (abfd, note->descdata + 44, 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;
}
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
#define TARGET_LITTLE_NAME "elf32-littlearm"
#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
#define TARGET_BIG_NAME "elf32-bigarm"
#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
typedef unsigned long int insn32;
typedef unsigned short int insn16;
/* In lieu of proper flags, assume all EABIv4 or later objects are
interworkable. */
#define INTERWORK_FLAG(abfd) \
(EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
|| (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK) \
|| ((abfd)->flags & BFD_LINKER_CREATED))
/* The linker script knows the section names for placement.
The entry_names are used to do simple name mangling on the stubs.
Given a function name, and its type, the stub can be found. The
name can be changed. The only requirement is the %s be present. */
#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
#define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
#define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
#define STUB_ENTRY_NAME "__%s_veneer"
/* The name of the dynamic interpreter. This is put in the .interp
section. */
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
static const unsigned long tls_trampoline [] =
{
0xe08e0000, /* add r0, lr, r0 */
0xe5901004, /* ldr r1, [r0,#4] */
0xe12fff11, /* bx r1 */
};
static const unsigned long dl_tlsdesc_lazy_trampoline [] =
{
0xe52d2004, /* push {r2} */
0xe59f200c, /* ldr r2, [pc, #3f - . - 8] */
0xe59f100c, /* ldr r1, [pc, #4f - . - 8] */
0xe79f2002, /* 1: ldr r2, [pc, r2] */
0xe081100f, /* 2: add r1, pc */
0xe12fff12, /* bx r2 */
0x00000014, /* 3: .word _GLOBAL_OFFSET_TABLE_ - 1b - 8
+ dl_tlsdesc_lazy_resolver(GOT) */
0x00000018, /* 4: .word _GLOBAL_OFFSET_TABLE_ - 2b - 8 */
};
#ifdef FOUR_WORD_PLT
/* The first entry in a procedure linkage table looks like
this. It is set up so that any shared library function that is
called before the relocation has been set up calls the dynamic
linker first. */
static const bfd_vma elf32_arm_plt0_entry [] =
{
0xe52de004, /* str lr, [sp, #-4]! */
0xe59fe010, /* ldr lr, [pc, #16] */
0xe08fe00e, /* add lr, pc, lr */
0xe5bef008, /* ldr pc, [lr, #8]! */
};
/* Subsequent entries in a procedure linkage table look like
this. */
static const bfd_vma elf32_arm_plt_entry [] =
{
0xe28fc600, /* add ip, pc, #NN */
0xe28cca00, /* add ip, ip, #NN */
0xe5bcf000, /* ldr pc, [ip, #NN]! */
0x00000000, /* unused */
};
#else
/* The first entry in a procedure linkage table looks like
this. It is set up so that any shared library function that is
called before the relocation has been set up calls the dynamic
linker first. */
static const bfd_vma elf32_arm_plt0_entry [] =
{
0xe52de004, /* str lr, [sp, #-4]! */
0xe59fe004, /* ldr lr, [pc, #4] */
0xe08fe00e, /* add lr, pc, lr */
0xe5bef008, /* ldr pc, [lr, #8]! */
0x00000000, /* &GOT[0] - . */
};
/* Subsequent entries in a procedure linkage table look like
this. */
static const bfd_vma elf32_arm_plt_entry [] =
{
0xe28fc600, /* add ip, pc, #0xNN00000 */
0xe28cca00, /* add ip, ip, #0xNN000 */
0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
};
#endif
/* The format of the first entry in the procedure linkage table
for a VxWorks executable. */
static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
{
0xe52dc008, /* str ip,[sp,#-8]! */
0xe59fc000, /* ldr ip,[pc] */
0xe59cf008, /* ldr pc,[ip,#8] */
0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
};
/* The format of subsequent entries in a VxWorks executable. */
static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
{
0xe59fc000, /* ldr ip,[pc] */
0xe59cf000, /* ldr pc,[ip] */
0x00000000, /* .long @got */
0xe59fc000, /* ldr ip,[pc] */
0xea000000, /* b _PLT */
0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
};
/* The format of entries in a VxWorks shared library. */
static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
{
0xe59fc000, /* ldr ip,[pc] */
0xe79cf009, /* ldr pc,[ip,r9] */
0x00000000, /* .long @got */
0xe59fc000, /* ldr ip,[pc] */
0xe599f008, /* ldr pc,[r9,#8] */
0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
};
/* An initial stub used if the PLT entry is referenced from Thumb code. */
#define PLT_THUMB_STUB_SIZE 4
static const bfd_vma elf32_arm_plt_thumb_stub [] =
{
0x4778, /* bx pc */
0x46c0 /* nop */
};
/* The entries in a PLT when using a DLL-based target with multiple
address spaces. */
static const bfd_vma elf32_arm_symbian_plt_entry [] =
{
0xe51ff004, /* ldr pc, [pc, #-4] */
0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
};
#define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
#define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
#define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
#define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
#define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
#define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
enum stub_insn_type
{
THUMB16_TYPE = 1,
THUMB32_TYPE,
ARM_TYPE,
DATA_TYPE
};
#define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0}
/* A bit of a hack. A Thumb conditional branch, in which the proper condition
is inserted in arm_build_one_stub(). */
#define THUMB16_BCOND_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 1}
#define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0}
#define THUMB32_B_INSN(X, Z) {(X), THUMB32_TYPE, R_ARM_THM_JUMP24, (Z)}
#define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0}
#define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)}
#define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)}
typedef struct
{
bfd_vma data;
enum stub_insn_type type;
unsigned int r_type;
int reloc_addend;
} insn_sequence;
/* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx
to reach the stub if necessary. */
static const insn_sequence elf32_arm_stub_long_branch_any_any[] =
{
ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
};
/* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not
available. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] =
{
ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
ARM_INSN(0xe12fff1c), /* bx ip */
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
};
/* Thumb -> Thumb long branch stub. Used on M-profile architectures. */
static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] =
{
THUMB16_INSN(0xb401), /* push {r0} */
THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
THUMB16_INSN(0x4684), /* mov ip, r0 */
THUMB16_INSN(0xbc01), /* pop {r0} */
THUMB16_INSN(0x4760), /* bx ip */
THUMB16_INSN(0xbf00), /* nop */
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
};
/* V4T Thumb -> Thumb long branch stub. Using the stack is not
allowed. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] =
{
THUMB16_INSN(0x4778), /* bx pc */
THUMB16_INSN(0x46c0), /* nop */
ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
ARM_INSN(0xe12fff1c), /* bx ip */
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
};
/* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not
available. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] =
{
THUMB16_INSN(0x4778), /* bx pc */
THUMB16_INSN(0x46c0), /* nop */
ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
};
/* V4T Thumb -> ARM short branch stub. Shorter variant of the above
one, when the destination is close enough. */
static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] =
{
THUMB16_INSN(0x4778), /* bx pc */
THUMB16_INSN(0x46c0), /* nop */
ARM_REL_INSN(0xea000000, -8), /* b (X-8) */
};
/* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use
blx to reach the stub if necessary. */
static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] =
{
ARM_INSN(0xe59fc000), /* ldr ip, [pc] */
ARM_INSN(0xe08ff00c), /* add pc, pc, ip */
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */
};
/* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use
blx to reach the stub if necessary. We can not add into pc;
it is not guaranteed to mode switch (different in ARMv6 and
ARMv7). */
static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] =
{
ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
ARM_INSN(0xe12fff1c), /* bx ip */
DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
};
/* V4T ARM -> ARM long branch stub, PIC. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] =
{
ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
ARM_INSN(0xe12fff1c), /* bx ip */
DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
};
/* V4T Thumb -> ARM long branch stub, PIC. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] =
{
THUMB16_INSN(0x4778), /* bx pc */
THUMB16_INSN(0x46c0), /* nop */
ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
ARM_INSN(0xe08cf00f), /* add pc, ip, pc */
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */
};
/* Thumb -> Thumb long branch stub, PIC. Used on M-profile
architectures. */
static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] =
{
THUMB16_INSN(0xb401), /* push {r0} */
THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
THUMB16_INSN(0x46fc), /* mov ip, pc */
THUMB16_INSN(0x4484), /* add ip, r0 */
THUMB16_INSN(0xbc01), /* pop {r0} */
THUMB16_INSN(0x4760), /* bx ip */
DATA_WORD(0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */
};
/* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not
allowed. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] =
{
THUMB16_INSN(0x4778), /* bx pc */
THUMB16_INSN(0x46c0), /* nop */
ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
ARM_INSN(0xe12fff1c), /* bx ip */
DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
};
/* Thumb2/ARM -> TLS trampoline. Lowest common denominator, which is a
long PIC stub. We can use r1 as a scratch -- and cannot use ip. */
static const insn_sequence elf32_arm_stub_long_branch_any_tls_pic[] =
{
ARM_INSN(0xe59f1000), /* ldr r1, [pc] */
ARM_INSN(0xe08ff001), /* add pc, pc, r1 */
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */
};
/* V4T Thumb -> TLS trampoline. lowest common denominator, which is a
long PIC stub. We can use r1 as a scratch -- and cannot use ip. */
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_tls_pic[] =
{
THUMB16_INSN(0x4778), /* bx pc */
THUMB16_INSN(0x46c0), /* nop */
ARM_INSN(0xe59f1000), /* ldr r1, [pc, #0] */
ARM_INSN(0xe081f00f), /* add pc, r1, pc */
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */
};
/* Cortex-A8 erratum-workaround stubs. */
/* Stub used for conditional branches (which may be beyond +/-1MB away, so we
can't use a conditional branch to reach this stub). */
static const insn_sequence elf32_arm_stub_a8_veneer_b_cond[] =
{
THUMB16_BCOND_INSN(0xd001), /* b<cond>.n true. */
THUMB32_B_INSN(0xf000b800, -4), /* b.w insn_after_original_branch. */
THUMB32_B_INSN(0xf000b800, -4) /* true: b.w original_branch_dest. */
};
/* Stub used for b.w and bl.w instructions. */
static const insn_sequence elf32_arm_stub_a8_veneer_b[] =
{
THUMB32_B_INSN(0xf000b800, -4) /* b.w original_branch_dest. */
};
static const insn_sequence elf32_arm_stub_a8_veneer_bl[] =
{
THUMB32_B_INSN(0xf000b800, -4) /* b.w original_branch_dest. */
};
/* Stub used for Thumb-2 blx.w instructions. We modified the original blx.w
instruction (which switches to ARM mode) to point to this stub. Jump to the
real destination using an ARM-mode branch. */
static const insn_sequence elf32_arm_stub_a8_veneer_blx[] =
{
ARM_REL_INSN(0xea000000, -8) /* b original_branch_dest. */
};
/* Section name for stubs is the associated section name plus this
string. */
#define STUB_SUFFIX ".stub"
/* One entry per long/short branch stub defined above. */
#define DEF_STUBS \
DEF_STUB(long_branch_any_any) \
DEF_STUB(long_branch_v4t_arm_thumb) \
DEF_STUB(long_branch_thumb_only) \
DEF_STUB(long_branch_v4t_thumb_thumb) \
DEF_STUB(long_branch_v4t_thumb_arm) \
DEF_STUB(short_branch_v4t_thumb_arm) \
DEF_STUB(long_branch_any_arm_pic) \
DEF_STUB(long_branch_any_thumb_pic) \
DEF_STUB(long_branch_v4t_thumb_thumb_pic) \
DEF_STUB(long_branch_v4t_arm_thumb_pic) \
DEF_STUB(long_branch_v4t_thumb_arm_pic) \
DEF_STUB(long_branch_thumb_only_pic) \
DEF_STUB(long_branch_any_tls_pic) \
DEF_STUB(long_branch_v4t_thumb_tls_pic) \
DEF_STUB(a8_veneer_b_cond) \
DEF_STUB(a8_veneer_b) \
DEF_STUB(a8_veneer_bl) \
DEF_STUB(a8_veneer_blx)
#define DEF_STUB(x) arm_stub_##x,
enum elf32_arm_stub_type {
arm_stub_none,
DEF_STUBS
/* Note the first a8_veneer type */
arm_stub_a8_veneer_lwm = arm_stub_a8_veneer_b_cond
};
#undef DEF_STUB
typedef struct
{
const insn_sequence* template_sequence;
int template_size;
} stub_def;
#define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)},
static const stub_def stub_definitions[] = {
{NULL, 0},
DEF_STUBS
};
struct elf32_arm_stub_hash_entry
{
/* Base hash table entry structure. */
struct bfd_hash_entry root;
/* The stub section. */
asection *stub_sec;
/* Offset within stub_sec of the beginning of this stub. */
bfd_vma stub_offset;
/* Given the symbol's value and its section we can determine its final
value when building the stubs (so the stub knows where to jump). */
bfd_vma target_value;
asection *target_section;
/* Offset to apply to relocation referencing target_value. */
bfd_vma target_addend;
/* The instruction which caused this stub to be generated (only valid for
Cortex-A8 erratum workaround stubs at present). */
unsigned long orig_insn;
/* The stub type. */
enum elf32_arm_stub_type stub_type;
/* Its encoding size in bytes. */
int stub_size;
/* Its template. */
const insn_sequence *stub_template;
/* The size of the template (number of entries). */
int stub_template_size;
/* The symbol table entry, if any, that this was derived from. */
struct elf32_arm_link_hash_entry *h;
/* Type of branch. */
enum arm_st_branch_type branch_type;
/* Where this stub is being called from, or, in the case of combined
stub sections, the first input section in the group. */
asection *id_sec;
/* The name for the local symbol at the start of this stub. The
stub name in the hash table has to be unique; this does not, so
it can be friendlier. */
char *output_name;
};
/* Used to build a map of a section. This is required for mixed-endian
code/data. */
typedef struct elf32_elf_section_map
{
bfd_vma vma;
char type;
}
elf32_arm_section_map;
/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
typedef enum
{
VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
VFP11_ERRATUM_ARM_VENEER,
VFP11_ERRATUM_THUMB_VENEER
}
elf32_vfp11_erratum_type;
typedef struct elf32_vfp11_erratum_list
{
struct elf32_vfp11_erratum_list *next;
bfd_vma vma;
union
{
struct
{
struct elf32_vfp11_erratum_list *veneer;
unsigned int vfp_insn;
} b;
struct
{
struct elf32_vfp11_erratum_list *branch;
unsigned int id;
} v;
} u;
elf32_vfp11_erratum_type type;
}
elf32_vfp11_erratum_list;
typedef enum
{
DELETE_EXIDX_ENTRY,
INSERT_EXIDX_CANTUNWIND_AT_END
}
arm_unwind_edit_type;
/* A (sorted) list of edits to apply to an unwind table. */
typedef struct arm_unwind_table_edit
{
arm_unwind_edit_type type;
/* Note: we sometimes want to insert an unwind entry corresponding to a
section different from the one we're currently writing out, so record the
(text) section this edit relates to here. */
asection *linked_section;
unsigned int index;
struct arm_unwind_table_edit *next;
}
arm_unwind_table_edit;
typedef struct _arm_elf_section_data
{
/* Information about mapping symbols. */
struct bfd_elf_section_data elf;
unsigned int mapcount;
unsigned int mapsize;
elf32_arm_section_map *map;
/* Information about CPU errata. */
unsigned int erratumcount;
elf32_vfp11_erratum_list *erratumlist;
/* Information about unwind tables. */
union
{
/* Unwind info attached to a text section. */
struct
{
asection *arm_exidx_sec;
} text;
/* Unwind info attached to an .ARM.exidx section. */
struct
{
arm_unwind_table_edit *unwind_edit_list;
arm_unwind_table_edit *unwind_edit_tail;
} exidx;
} u;
}
_arm_elf_section_data;
#define elf32_arm_section_data(sec) \
((_arm_elf_section_data *) elf_section_data (sec))
/* A fix which might be required for Cortex-A8 Thumb-2 branch/TLB erratum.
These fixes are subject to a relaxation procedure (in elf32_arm_size_stubs),
so may be created multiple times: we use an array of these entries whilst
relaxing which we can refresh easily, then create stubs for each potentially
erratum-triggering instruction once we've settled on a solution. */
struct a8_erratum_fix {
bfd *input_bfd;
asection *section;
bfd_vma offset;
bfd_vma addend;
unsigned long orig_insn;
char *stub_name;
enum elf32_arm_stub_type stub_type;
enum arm_st_branch_type branch_type;
};
/* A table of relocs applied to branches which might trigger Cortex-A8
erratum. */
struct a8_erratum_reloc {
bfd_vma from;
bfd_vma destination;
struct elf32_arm_link_hash_entry *hash;
const char *sym_name;
unsigned int r_type;
enum arm_st_branch_type branch_type;
bfd_boolean non_a8_stub;
};
/* The size of the thread control block. */
#define TCB_SIZE 8
/* ARM-specific information about a PLT entry, over and above the usual
gotplt_union. */
struct arm_plt_info {
/* We reference count Thumb references to a PLT entry separately,
so that we can emit the Thumb trampoline only if needed. */
bfd_signed_vma thumb_refcount;
/* Some references from Thumb code may be eliminated by BL->BLX
conversion, so record them separately. */
bfd_signed_vma maybe_thumb_refcount;
/* How many of the recorded PLT accesses were from non-call relocations.
This information is useful when deciding whether anything takes the
address of an STT_GNU_IFUNC PLT. A value of 0 means that all
non-call references to the function should resolve directly to the
real runtime target. */
unsigned int noncall_refcount;
/* Since PLT entries have variable size if the Thumb prologue is
used, we need to record the index into .got.plt instead of
recomputing it from the PLT offset. */
bfd_signed_vma got_offset;
};
/* Information about an .iplt entry for a local STT_GNU_IFUNC symbol. */
struct arm_local_iplt_info {
/* The information that is usually found in the generic ELF part of
the hash table entry. */
union gotplt_union root;
/* The information that is usually found in the ARM-specific part of
the hash table entry. */
struct arm_plt_info arm;
/* A list of all potential dynamic relocations against this symbol. */
struct elf_dyn_relocs *dyn_relocs;
};
struct elf_arm_obj_tdata
{
struct elf_obj_tdata root;
/* tls_type for each local got entry. */
char *local_got_tls_type;
/* GOTPLT entries for TLS descriptors. */
bfd_vma *local_tlsdesc_gotent;
/* Information for local symbols that need entries in .iplt. */
struct arm_local_iplt_info **local_iplt;
/* Zero to warn when linking objects with incompatible enum sizes. */
int no_enum_size_warning;
/* Zero to warn when linking objects with incompatible wchar_t sizes. */
int no_wchar_size_warning;
};
#define elf_arm_tdata(bfd) \
((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
#define elf32_arm_local_got_tls_type(bfd) \
(elf_arm_tdata (bfd)->local_got_tls_type)
#define elf32_arm_local_tlsdesc_gotent(bfd) \
(elf_arm_tdata (bfd)->local_tlsdesc_gotent)
#define elf32_arm_local_iplt(bfd) \
(elf_arm_tdata (bfd)->local_iplt)
#define is_arm_elf(bfd) \
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
&& elf_tdata (bfd) != NULL \
&& elf_object_id (bfd) == ARM_ELF_DATA)
static bfd_boolean
elf32_arm_mkobject (bfd *abfd)
{
return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
ARM_ELF_DATA);
}
#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
/* Arm ELF linker hash entry. */
struct elf32_arm_link_hash_entry
{
struct elf_link_hash_entry root;
/* Track dynamic relocs copied for this symbol. */
struct elf_dyn_relocs *dyn_relocs;
/* ARM-specific PLT information. */
struct arm_plt_info plt;
#define GOT_UNKNOWN 0
#define GOT_NORMAL 1
#define GOT_TLS_GD 2
#define GOT_TLS_IE 4
#define GOT_TLS_GDESC 8
#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLS_GDESC))
unsigned int tls_type : 8;
/* True if the symbol's PLT entry is in .iplt rather than .plt. */
unsigned int is_iplt : 1;
unsigned int unused : 23;
/* Offset of the GOTPLT entry reserved for the TLS descriptor,
starting at the end of the jump table. */
bfd_vma tlsdesc_got;
/* The symbol marking the real symbol location for exported thumb
symbols with Arm stubs. */
struct elf_link_hash_entry *export_glue;
/* A pointer to the most recently used stub hash entry against this
symbol. */
struct elf32_arm_stub_hash_entry *stub_cache;
};
/* Traverse an arm ELF linker hash table. */
#define elf32_arm_link_hash_traverse(table, func, info) \
(elf_link_hash_traverse \
(&(table)->root, \
(bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
(info)))
/* Get the ARM elf linker hash table from a link_info structure. */
#define elf32_arm_hash_table(info) \
(elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
== ARM_ELF_DATA ? ((struct elf32_arm_link_hash_table *) ((info)->hash)) : NULL)
#define arm_stub_hash_lookup(table, string, create, copy) \
((struct elf32_arm_stub_hash_entry *) \
bfd_hash_lookup ((table), (string), (create), (copy)))
/* Array to keep track of which stub sections have been created, and
information on stub grouping. */
struct map_stub
{
/* This is the section to which stubs in the group will be
attached. */
asection *link_sec;
/* The stub section. */
asection *stub_sec;
};
#define elf32_arm_compute_jump_table_size(htab) \
((htab)->next_tls_desc_index * 4)
/* ARM ELF linker hash table. */
struct elf32_arm_link_hash_table
{
/* The main hash table. */
struct elf_link_hash_table root;
/* The size in bytes of the section containing the Thumb-to-ARM glue. */
bfd_size_type thumb_glue_size;
/* The size in bytes of the section containing the ARM-to-Thumb glue. */
bfd_size_type arm_glue_size;
/* The size in bytes of section containing the ARMv4 BX veneers. */
bfd_size_type bx_glue_size;
/* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
veneer has been populated. */
bfd_vma bx_glue_offset[15];
/* The size in bytes of the section containing glue for VFP11 erratum
veneers. */
bfd_size_type vfp11_erratum_glue_size;
/* A table of fix locations for Cortex-A8 Thumb-2 branch/TLB erratum. This
holds Cortex-A8 erratum fix locations between elf32_arm_size_stubs() and
elf32_arm_write_section(). */
struct a8_erratum_fix *a8_erratum_fixes;
unsigned int num_a8_erratum_fixes;
/* An arbitrary input BFD chosen to hold the glue sections. */
bfd * bfd_of_glue_owner;
/* Nonzero to output a BE8 image. */
int byteswap_code;
/* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
int target1_is_rel;
/* The relocation to use for R_ARM_TARGET2 relocations. */
int target2_reloc;
/* 0 = Ignore R_ARM_V4BX.
1 = Convert BX to MOV PC.
2 = Generate v4 interworing stubs. */
int fix_v4bx;
/* Whether we should fix the Cortex-A8 Thumb-2 branch/TLB erratum. */
int fix_cortex_a8;
/* Nonzero if the ARM/Thumb BLX instructions are available for use. */
int use_blx;
/* What sort of code sequences we should look for which may trigger the
VFP11 denorm erratum. */
bfd_arm_vfp11_fix vfp11_fix;
/* Global counter for the number of fixes we have emitted. */
int num_vfp11_fixes;
/* Nonzero to force PIC branch veneers. */
int pic_veneer;
/* The number of bytes in the initial entry in the PLT. */
bfd_size_type plt_header_size;
/* The number of bytes in the subsequent PLT etries. */
bfd_size_type plt_entry_size;
/* True if the target system is VxWorks. */
int vxworks_p;
/* True if the target system is Symbian OS. */
int symbian_p;
/* True if the target uses REL relocations. */
int use_rel;
/* The index of the next unused R_ARM_TLS_DESC slot in .rel.plt. */
bfd_vma next_tls_desc_index;
/* How many R_ARM_TLS_DESC relocations were generated so far. */
bfd_vma num_tls_desc;
/* Short-cuts to get to dynamic linker sections. */
asection *sdynbss;
asection *srelbss;
/* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
asection *srelplt2;
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. */
bfd_vma dt_tlsdesc_plt;
/* The offset into sgot of the GOT entry used by the PLT entry
above. */
bfd_vma dt_tlsdesc_got;
/* Offset in .plt section of tls_arm_trampoline. */
bfd_vma tls_trampoline;
/* Data for R_ARM_TLS_LDM32 relocations. */
union
{
bfd_signed_vma refcount;
bfd_vma offset;
} tls_ldm_got;
/* Small local sym cache. */
struct sym_cache sym_cache;
/* For convenience in allocate_dynrelocs. */
bfd * obfd;
/* The amount of space used by the reserved portion of the sgotplt
section, plus whatever space is used by the jump slots. */
bfd_vma sgotplt_jump_table_size;
/* The stub hash table. */
struct bfd_hash_table stub_hash_table;
/* Linker stub bfd. */
bfd *stub_bfd;
/* Linker call-backs. */
asection * (*add_stub_section) (const char *, asection *);
void (*layout_sections_again) (void);
/* Array to keep track of which stub sections have been created, and
information on stub grouping. */
struct map_stub *stub_group;
/* Number of elements in stub_group. */
int top_id;
/* Assorted information used by elf32_arm_size_stubs. */
unsigned int bfd_count;
int top_index;
asection **input_list;
};
/* Create an entry in an ARM ELF linker hash table. */
static struct bfd_hash_entry *
elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
struct bfd_hash_table * table,
const char * string)
{
struct elf32_arm_link_hash_entry * ret =
(struct elf32_arm_link_hash_entry *) entry;
/* Allocate the structure if it has not already been allocated by a
subclass. */
if (ret == NULL)
ret = (struct elf32_arm_link_hash_entry *)
bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
if (ret == NULL)
return (struct bfd_hash_entry *) ret;
/* Call the allocation method of the superclass. */
ret = ((struct elf32_arm_link_hash_entry *)
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
table, string));
if (ret != NULL)
{
ret->dyn_relocs = NULL;
ret->tls_type = GOT_UNKNOWN;
ret->tlsdesc_got = (bfd_vma) -1;
ret->plt.thumb_refcount = 0;
ret->plt.maybe_thumb_refcount = 0;
ret->plt.noncall_refcount = 0;
ret->plt.got_offset = -1;
ret->is_iplt = FALSE;
ret->export_glue = NULL;
ret->stub_cache = NULL;
}
return (struct bfd_hash_entry *) ret;
}
/* Ensure that we have allocated bookkeeping structures for ABFD's local
symbols. */
static bfd_boolean
elf32_arm_allocate_local_sym_info (bfd *abfd)
{
if (elf_local_got_refcounts (abfd) == NULL)
{
bfd_size_type num_syms;
bfd_size_type size;
char *data;
num_syms = elf_tdata (abfd)->symtab_hdr.sh_info;
size = num_syms * (sizeof (bfd_signed_vma)
+ sizeof (struct arm_local_iplt_info *)
+ sizeof (bfd_vma)
+ sizeof (char));
data = bfd_zalloc (abfd, size);
if (data == NULL)
return FALSE;
elf_local_got_refcounts (abfd) = (bfd_signed_vma *) data;
data += num_syms * sizeof (bfd_signed_vma);
elf32_arm_local_iplt (abfd) = (struct arm_local_iplt_info **) data;
data += num_syms * sizeof (struct arm_local_iplt_info *);
elf32_arm_local_tlsdesc_gotent (abfd) = (bfd_vma *) data;
data += num_syms * sizeof (bfd_vma);
elf32_arm_local_got_tls_type (abfd) = data;
}
return TRUE;
}
/* Return the .iplt information for local symbol R_SYMNDX, which belongs
to input bfd ABFD. Create the information if it doesn't already exist.
Return null if an allocation fails. */
static struct arm_local_iplt_info *
elf32_arm_create_local_iplt (bfd *abfd, unsigned long r_symndx)
{
struct arm_local_iplt_info **ptr;
if (!elf32_arm_allocate_local_sym_info (abfd))
return NULL;
BFD_ASSERT (r_symndx < elf_tdata (abfd)->symtab_hdr.sh_info);
ptr = &elf32_arm_local_iplt (abfd)[r_symndx];
if (*ptr == NULL)
*ptr = bfd_zalloc (abfd, sizeof (**ptr));
return *ptr;
}
/* Try to obtain PLT information for the symbol with index R_SYMNDX
in ABFD's symbol table. If the symbol is global, H points to its
hash table entry, otherwise H is null.
Return true if the symbol does have PLT information. When returning
true, point *ROOT_PLT at the target-independent reference count/offset
union and *ARM_PLT at the ARM-specific information. */
static bfd_boolean
elf32_arm_get_plt_info (bfd *abfd, struct elf32_arm_link_hash_entry *h,
unsigned long r_symndx, union gotplt_union **root_plt,
struct arm_plt_info **arm_plt)
{
struct arm_local_iplt_info *local_iplt;
if (h != NULL)
{
*root_plt = &h->root.plt;
*arm_plt = &h->plt;
return TRUE;
}
if (elf32_arm_local_iplt (abfd) == NULL)
return FALSE;
local_iplt = elf32_arm_local_iplt (abfd)[r_symndx];
if (local_iplt == NULL)
return FALSE;
*root_plt = &local_iplt->root;
*arm_plt = &local_iplt->arm;
return TRUE;
}
/* Return true if the PLT described by ARM_PLT requires a Thumb stub
before it. */
static bfd_boolean
elf32_arm_plt_needs_thumb_stub_p (struct bfd_link_info *info,
struct arm_plt_info *arm_plt)
{
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
return (arm_plt->thumb_refcount != 0
|| (!htab->use_blx && arm_plt->maybe_thumb_refcount != 0));
}
/* Return a pointer to the head of the dynamic reloc list that should
be used for local symbol ISYM, which is symbol number R_SYMNDX in
ABFD's symbol table. Return null if an error occurs. */
static struct elf_dyn_relocs **
elf32_arm_get_local_dynreloc_list (bfd *abfd, unsigned long r_symndx,
Elf_Internal_Sym *isym)
{
if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
{
struct arm_local_iplt_info *local_iplt;
local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx);
if (local_iplt == NULL)
return NULL;
return &local_iplt->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_elf_index (abfd, isym->st_shndx);
if (s == NULL)
abort ();
vpp = &elf_section_data (s)->local_dynrel;
return (struct elf_dyn_relocs **) vpp;
}
}
/* Initialize an entry in the stub hash table. */
static struct bfd_hash_entry *
stub_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 = (struct bfd_hash_entry *)
bfd_hash_allocate (table, sizeof (struct elf32_arm_stub_hash_entry));
if (entry == NULL)
return entry;
}
/* Call the allocation method of the superclass. */
entry = bfd_hash_newfunc (entry, table, string);
if (entry != NULL)
{
struct elf32_arm_stub_hash_entry *eh;
/* Initialize the local fields. */
eh = (struct elf32_arm_stub_hash_entry *) entry;
eh->stub_sec = NULL;
eh->stub_offset = 0;
eh->target_value = 0;
eh->target_section = NULL;
eh->target_addend = 0;
eh->orig_insn = 0;
eh->stub_type = arm_stub_none;
eh->stub_size = 0;
eh->stub_template = NULL;
eh->stub_template_size = 0;
eh->h = NULL;
eh->id_sec = NULL;
eh->output_name = NULL;
}
return entry;
}
/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
shortcuts to them in our hash table. */
static bfd_boolean
create_got_section (bfd *dynobj, struct bfd_link_info *info)
{
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
/* BPABI objects never have a GOT, or associated sections. */
if (htab->symbian_p)
return TRUE;
if (! _bfd_elf_create_got_section (dynobj, info))
return FALSE;
return TRUE;
}
/* Create the .iplt, .rel(a).iplt and .igot.plt sections. */
static bfd_boolean
create_ifunc_sections (struct bfd_link_info *info)
{
struct elf32_arm_link_hash_table *htab;
const struct elf_backend_data *bed;
bfd *dynobj;
asection *s;
flagword flags;
htab = elf32_arm_hash_table (info);
dynobj = htab->root.dynobj;
bed = get_elf_backend_data (dynobj);
flags = bed->dynamic_sec_flags;
if (htab->root.iplt == NULL)
{
s = bfd_make_section_with_flags (dynobj, ".iplt",
flags | SEC_READONLY | SEC_CODE);
if (s == NULL
|| !bfd_set_section_alignment (abfd, s, bed->plt_alignment))
return FALSE;
htab->root.iplt = s;
}
if (htab->root.irelplt == NULL)
{
s = bfd_make_section_with_flags (dynobj, RELOC_SECTION (htab, ".iplt"),
flags | SEC_READONLY);
if (s == NULL
|| !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
htab->root.irelplt = s;
}
if (htab->root.igotplt == NULL)
{
s = bfd_make_section_with_flags (dynobj, ".igot.plt", flags);
if (s == NULL
|| !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align))
return FALSE;
htab->root.igotplt = s;
}
return TRUE;
}
/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
.rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
hash table. */
static bfd_boolean
elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
{
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
if (!htab->root.sgot && !create_got_section (dynobj, info))
return FALSE;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
if (!info->shared)
htab->srelbss = bfd_get_section_by_name (dynobj,
RELOC_SECTION (htab, ".bss"));
if (htab->vxworks_p)
{
if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
return FALSE;
if (info->shared)
{
htab->plt_header_size = 0;
htab->plt_entry_size
= 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
}
else
{
htab->plt_header_size
= 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
htab->plt_entry_size
= 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
}
}
if (!htab->root.splt
|| !htab->root.srelplt
|| !htab->sdynbss
|| (!info->shared && !htab->srelbss))
abort ();
return TRUE;
}
/* Copy the extra info we tack onto an elf_link_hash_entry. */
static void
elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *dir,
struct elf_link_hash_entry *ind)
{
struct elf32_arm_link_hash_entry *edir, *eind;
edir = (struct elf32_arm_link_hash_entry *) dir;
eind = (struct elf32_arm_link_hash_entry *) ind;
if (eind->dyn_relocs != NULL)
{
if (edir->dyn_relocs != NULL)
{
struct elf_dyn_relocs **pp;
struct 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 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;
}
if (ind->root.type == bfd_link_hash_indirect)
{
/* Copy over PLT info. */
edir->plt.thumb_refcount += eind->plt.thumb_refcount;
eind->plt.thumb_refcount = 0;
edir->plt.maybe_thumb_refcount += eind->plt.maybe_thumb_refcount;
eind->plt.maybe_thumb_refcount = 0;
edir->plt.noncall_refcount += eind->plt.noncall_refcount;
eind->plt.noncall_refcount = 0;
/* We should only allocate a function to .iplt once the final
symbol information is known. */
BFD_ASSERT (!eind->is_iplt);
if (dir->got.refcount <= 0)
{
edir->tls_type = eind->tls_type;
eind->tls_type = GOT_UNKNOWN;
}
}
_bfd_elf_link_hash_copy_indirect (info, dir, ind);
}
/* Create an ARM elf linker hash table. */
static struct bfd_link_hash_table *
elf32_arm_link_hash_table_create (bfd *abfd)
{
struct elf32_arm_link_hash_table *ret;
bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
ret = (struct elf32_arm_link_hash_table *) bfd_malloc (amt);
if (ret == NULL)
return NULL;
if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
elf32_arm_link_hash_newfunc,
sizeof (struct elf32_arm_link_hash_entry),
ARM_ELF_DATA))
{
free (ret);
return NULL;
}
ret->sdynbss = NULL;
ret->srelbss = NULL;
ret->srelplt2 = NULL;
ret->dt_tlsdesc_plt = 0;
ret->dt_tlsdesc_got = 0;
ret->tls_trampoline = 0;
ret->next_tls_desc_index = 0;
ret->num_tls_desc = 0;
ret->thumb_glue_size = 0;
ret->arm_glue_size = 0;
ret->bx_glue_size = 0;
memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
ret->vfp11_erratum_glue_size = 0;
ret->num_vfp11_fixes = 0;
ret->fix_cortex_a8 = 0;
ret->bfd_of_glue_owner = NULL;
ret->byteswap_code = 0;
ret->target1_is_rel = 0;
ret->target2_reloc = R_ARM_NONE;
#ifdef FOUR_WORD_PLT
ret->plt_header_size = 16;
ret->plt_entry_size = 16;
#else
ret->plt_header_size = 20;
ret->plt_entry_size = 12;
#endif
ret->fix_v4bx = 0;
ret->use_blx = 0;
ret->vxworks_p = 0;
ret->symbian_p = 0;
ret->use_rel = 1;
ret->sym_cache.abfd = NULL;
ret->obfd = abfd;
ret->tls_ldm_got.refcount = 0;
ret->stub_bfd = NULL;
ret->add_stub_section = NULL;
ret->layout_sections_again = NULL;
ret->stub_group = NULL;
ret->top_id = 0;
ret->bfd_count = 0;
ret->top_index = 0;
ret->input_list = NULL;
if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
sizeof (struct elf32_arm_stub_hash_entry)))
{
free (ret);
return NULL;
}
return &ret->root.root;
}
/* Free the derived linker hash table. */
static void
elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
{
struct elf32_arm_link_hash_table *ret
= (struct elf32_arm_link_hash_table *) hash;
bfd_hash_table_free (&ret->stub_hash_table);
_bfd_generic_link_hash_table_free (hash);
}
/* Determine if we're dealing with a Thumb only architecture. */
static bfd_boolean
using_thumb_only (struct elf32_arm_link_hash_table *globals)
{
int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
Tag_CPU_arch);
int profile;
if (arch == TAG_CPU_ARCH_V6_M || arch == TAG_CPU_ARCH_V6S_M)
return TRUE;
if (arch != TAG_CPU_ARCH_V7 && arch != TAG_CPU_ARCH_V7E_M)
return FALSE;
profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
Tag_CPU_arch_profile);
return profile == 'M';
}
/* Determine if we're dealing with a Thumb-2 object. */
static bfd_boolean
using_thumb2 (struct elf32_arm_link_hash_table *globals)
{
int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
Tag_CPU_arch);
return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
}
/* Determine what kind of NOPs are available. */
static bfd_boolean
arch_has_arm_nop (struct elf32_arm_link_hash_table *globals)
{
const int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
Tag_CPU_arch);
return arch == TAG_CPU_ARCH_V6T2
|| arch == TAG_CPU_ARCH_V6K
|| arch == TAG_CPU_ARCH_V7
|| arch == TAG_CPU_ARCH_V7E_M;
}
static bfd_boolean
arch_has_thumb2_nop (struct elf32_arm_link_hash_table *globals)
{
const int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
Tag_CPU_arch);
return (arch == TAG_CPU_ARCH_V6T2 || arch == TAG_CPU_ARCH_V7
|| arch == TAG_CPU_ARCH_V7E_M);
}
static bfd_boolean
arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
{
switch (stub_type)
{
case arm_stub_long_branch_thumb_only:
case arm_stub_long_branch_v4t_thumb_arm:
case arm_stub_short_branch_v4t_thumb_arm:
case arm_stub_long_branch_v4t_thumb_arm_pic:
case arm_stub_long_branch_v4t_thumb_tls_pic:
case arm_stub_long_branch_thumb_only_pic:
return TRUE;
case arm_stub_none:
BFD_FAIL ();
return FALSE;
break;
default:
return FALSE;
}
}
/* Determine the type of stub needed, if any, for a call. */
static enum elf32_arm_stub_type
arm_type_of_stub (struct bfd_link_info *info,
asection *input_sec,
const Elf_Internal_Rela *rel,
unsigned char st_type,
enum arm_st_branch_type *actual_branch_type,
struct elf32_arm_link_hash_entry *hash,
bfd_vma destination,
asection *sym_sec,
bfd *input_bfd,
const char *name)
{
bfd_vma location;
bfd_signed_vma branch_offset;
unsigned int r_type;
struct elf32_arm_link_hash_table * globals;
int thumb2;
int thumb_only;
enum elf32_arm_stub_type stub_type = arm_stub_none;
int use_plt = 0;
enum arm_st_branch_type branch_type = *actual_branch_type;
union gotplt_union *root_plt;
struct arm_plt_info *arm_plt;
if (branch_type == ST_BRANCH_LONG)
return stub_type;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return stub_type;
thumb_only = using_thumb_only (globals);
thumb2 = using_thumb2 (globals);
/* Determine where the call point is. */
location = (input_sec->output_offset
+ input_sec->output_section->vma
+ rel->r_offset);
r_type = ELF32_R_TYPE (rel->r_info);
/* For TLS call relocs, it is the caller's responsibility to provide
the address of the appropriate trampoline. */
if (r_type != R_ARM_TLS_CALL
&& r_type != R_ARM_THM_TLS_CALL
&& elf32_arm_get_plt_info (input_bfd, hash, ELF32_R_SYM (rel->r_info),
&root_plt, &arm_plt)
&& root_plt->offset != (bfd_vma) -1)
{
asection *splt;
if (hash == NULL || hash->is_iplt)
splt = globals->root.iplt;
else
splt = globals->root.splt;
if (splt != NULL)
{
use_plt = 1;
/* Note when dealing with PLT entries: the main PLT stub is in
ARM mode, so if the branch is in Thumb mode, another
Thumb->ARM stub will be inserted later just before the ARM
PLT stub. We don't take this extra distance into account
here, because if a long branch stub is needed, we'll add a
Thumb->Arm one and branch directly to the ARM PLT entry
because it avoids spreading offset corrections in several
places. */
destination = (splt->output_section->vma
+ splt->output_offset
+ root_plt->offset);
st_type = STT_FUNC;
branch_type = ST_BRANCH_TO_ARM;
}
}
/* Calls to STT_GNU_IFUNC symbols should go through a PLT. */
BFD_ASSERT (st_type != STT_GNU_IFUNC);
branch_offset = (bfd_signed_vma)(destination - location);
if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24
|| r_type == R_ARM_THM_TLS_CALL)
{
/* Handle cases where:
- this call goes too far (different Thumb/Thumb2 max
distance)
- it's a Thumb->Arm call and blx is not available, or it's a
Thumb->Arm branch (not bl). A stub is needed in this case,
but only if this call is not through a PLT entry. Indeed,
PLT stubs handle mode switching already.
*/
if ((!thumb2
&& (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
|| (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
|| (thumb2
&& (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
|| (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
|| (branch_type == ST_BRANCH_TO_ARM
&& (((r_type == R_ARM_THM_CALL
|| r_type == R_ARM_THM_TLS_CALL) && !globals->use_blx)
|| (r_type == R_ARM_THM_JUMP24))
&& !use_plt))
{
if (branch_type == ST_BRANCH_TO_THUMB)
{
/* Thumb to thumb. */
if (!thumb_only)
{
stub_type = (info->shared | globals->pic_veneer)
/* PIC stubs. */
? ((globals->use_blx
&& (r_type ==R_ARM_THM_CALL))
/* V5T and above. Stub starts with ARM code, so
we must be able to switch mode before
reaching it, which is only possible for 'bl'
(ie R_ARM_THM_CALL relocation). */
? arm_stub_long_branch_any_thumb_pic
/* On V4T, use Thumb code only. */
: arm_stub_long_branch_v4t_thumb_thumb_pic)
/* non-PIC stubs. */
: ((globals->use_blx
&& (r_type ==R_ARM_THM_CALL))
/* V5T and above. */
? arm_stub_long_branch_any_any
/* V4T. */
: arm_stub_long_branch_v4t_thumb_thumb);
}
else
{
stub_type = (info->shared | globals->pic_veneer)
/* PIC stub. */
? arm_stub_long_branch_thumb_only_pic
/* non-PIC stub. */
: arm_stub_long_branch_thumb_only;
}
}
else
{
/* Thumb to arm. */
if (sym_sec != NULL
&& sym_sec->owner != NULL
&& !INTERWORK_FLAG (sym_sec->owner))
{
(*_bfd_error_handler)
(_("%B(%s): warning: interworking not enabled.\n"
" first occurrence: %B: Thumb call to ARM"),
sym_sec->owner, input_bfd, name);
}
stub_type =
(info->shared | globals->pic_veneer)
/* PIC stubs. */
? (r_type == R_ARM_THM_TLS_CALL
/* TLS PIC stubs */
? (globals->use_blx ? arm_stub_long_branch_any_tls_pic
: arm_stub_long_branch_v4t_thumb_tls_pic)
: ((globals->use_blx && r_type == R_ARM_THM_CALL)
/* V5T PIC and above. */
? arm_stub_long_branch_any_arm_pic
/* V4T PIC stub. */
: arm_stub_long_branch_v4t_thumb_arm_pic))
/* non-PIC stubs. */
: ((globals->use_blx && r_type == R_ARM_THM_CALL)
/* V5T and above. */
? arm_stub_long_branch_any_any
/* V4T. */
: arm_stub_long_branch_v4t_thumb_arm);
/* Handle v4t short branches. */
if ((stub_type == arm_stub_long_branch_v4t_thumb_arm)
&& (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
&& (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
stub_type = arm_stub_short_branch_v4t_thumb_arm;
}
}
}
else if (r_type == R_ARM_CALL
|| r_type == R_ARM_JUMP24
|| r_type == R_ARM_PLT32
|| r_type == R_ARM_TLS_CALL)
{
if (branch_type == ST_BRANCH_TO_THUMB)
{
/* Arm to thumb. */
if (sym_sec != NULL
&& sym_sec->owner != NULL
&& !INTERWORK_FLAG (sym_sec->owner))
{
(*_bfd_error_handler)
(_("%B(%s): warning: interworking not enabled.\n"
" first occurrence: %B: ARM call to Thumb"),
sym_sec->owner, input_bfd, name);
}
/* We have an extra 2-bytes reach because of
the mode change (bit 24 (H) of BLX encoding). */
if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
|| (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
|| (r_type == R_ARM_CALL && !globals->use_blx)
|| (r_type == R_ARM_JUMP24)
|| (r_type == R_ARM_PLT32))
{
stub_type = (info->shared | globals->pic_veneer)
/* PIC stubs. */
? ((globals->use_blx)
/* V5T and above. */
? arm_stub_long_branch_any_thumb_pic
/* V4T stub. */
: arm_stub_long_branch_v4t_arm_thumb_pic)
/* non-PIC stubs. */
: ((globals->use_blx)
/* V5T and above. */
? arm_stub_long_branch_any_any
/* V4T. */
: arm_stub_long_branch_v4t_arm_thumb);
}
}
else
{
/* Arm to arm. */
if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
|| (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
{
stub_type =
(info->shared | globals->pic_veneer)
/* PIC stubs. */
? (r_type == R_ARM_TLS_CALL
/* TLS PIC Stub */
? arm_stub_long_branch_any_tls_pic
: arm_stub_long_branch_any_arm_pic)
/* non-PIC stubs. */
: arm_stub_long_branch_any_any;
}
}
}
/* If a stub is needed, record the actual destination type. */
if (stub_type != arm_stub_none)
*actual_branch_type = branch_type;
return stub_type;
}
/* Build a name for an entry in the stub hash table. */
static char *
elf32_arm_stub_name (const asection *input_section,
const asection *sym_sec,
const struct elf32_arm_link_hash_entry *hash,
const Elf_Internal_Rela *rel,
enum elf32_arm_stub_type stub_type)
{
char *stub_name;
bfd_size_type len;
if (hash)
{
len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1 + 2 + 1;
stub_name = (char *) bfd_malloc (len);
if (stub_name != NULL)
sprintf (stub_name, "%08x_%s+%x_%d",
input_section->id & 0xffffffff,
hash->root.root.root.string,
(int) rel->r_addend & 0xffffffff,
(int) stub_type);
}
else
{
len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1 + 2 + 1;
stub_name = (char *) bfd_malloc (len);
if (stub_name != NULL)
sprintf (stub_name, "%08x_%x:%x+%x_%d",
input_section->id & 0xffffffff,
sym_sec->id & 0xffffffff,
ELF32_R_TYPE (rel->r_info) == R_ARM_TLS_CALL
|| ELF32_R_TYPE (rel->r_info) == R_ARM_THM_TLS_CALL
? 0 : (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
(int) rel->r_addend & 0xffffffff,
(int) stub_type);
}
return stub_name;
}
/* Look up an entry in the stub hash. Stub entries are cached because
creating the stub name takes a bit of time. */
static struct elf32_arm_stub_hash_entry *
elf32_arm_get_stub_entry (const asection *input_section,
const asection *sym_sec,
struct elf_link_hash_entry *hash,
const Elf_Internal_Rela *rel,
struct elf32_arm_link_hash_table *htab,
enum elf32_arm_stub_type stub_type)
{
struct elf32_arm_stub_hash_entry *stub_entry;
struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
const asection *id_sec;
if ((input_section->flags & SEC_CODE) == 0)
return NULL;
/* If this input section is part of a group of sections sharing one
stub section, then use the id of the first section in the group.
Stub names need to include a section id, as there may well be
more than one stub used to reach say, printf, and we need to
distinguish between them. */
id_sec = htab->stub_group[input_section->id].link_sec;
if (h != NULL && h->stub_cache != NULL
&& h->stub_cache->h == h
&& h->stub_cache->id_sec == id_sec
&& h->stub_cache->stub_type == stub_type)
{
stub_entry = h->stub_cache;
}
else
{
char *stub_name;
stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel, stub_type);
if (stub_name == NULL)
return NULL;
stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
stub_name, FALSE, FALSE);
if (h != NULL)
h->stub_cache = stub_entry;
free (stub_name);
}
return stub_entry;
}
/* Find or create a stub section. Returns a pointer to the stub section, and
the section to which the stub section will be attached (in *LINK_SEC_P).
LINK_SEC_P may be NULL. */
static asection *
elf32_arm_create_or_find_stub_sec (asection **link_sec_p, asection *section,
struct elf32_arm_link_hash_table *htab)
{
asection *link_sec;
asection *stub_sec;
link_sec = htab->stub_group[section->id].link_sec;
stub_sec = htab->stub_group[section->id].stub_sec;
if (stub_sec == NULL)
{
stub_sec = htab->stub_group[link_sec->id].stub_sec;
if (stub_sec == NULL)
{
size_t namelen;
bfd_size_type len;
char *s_name;
namelen = strlen (link_sec->name);
len = namelen + sizeof (STUB_SUFFIX);
s_name = (char *) bfd_alloc (htab->stub_bfd, len);
if (s_name == NULL)
return NULL;
memcpy (s_name, link_sec->name, namelen);
memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
stub_sec = (*htab->add_stub_section) (s_name, link_sec);
if (stub_sec == NULL)
return NULL;
htab->stub_group[link_sec->id].stub_sec = stub_sec;
}
htab->stub_group[section->id].stub_sec = stub_sec;
}
if (link_sec_p)
*link_sec_p = link_sec;
return stub_sec;
}
/* Add a new stub entry to the stub hash. Not all fields of the new
stub entry are initialised. */
static struct elf32_arm_stub_hash_entry *
elf32_arm_add_stub (const char *stub_name,
asection *section,
struct elf32_arm_link_hash_table *htab)
{
asection *link_sec;
asection *stub_sec;
struct elf32_arm_stub_hash_entry *stub_entry;
stub_sec = elf32_arm_create_or_find_stub_sec (&link_sec, section, htab);
if (stub_sec == NULL)
return NULL;
/* Enter this entry into the linker stub hash table. */
stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
TRUE, FALSE);
if (stub_entry == NULL)
{
(*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
section->owner,
stub_name);
return NULL;
}
stub_entry->stub_sec = stub_sec;
stub_entry->stub_offset = 0;
stub_entry->id_sec = link_sec;
return stub_entry;
}
/* Store an Arm insn into an output section not processed by
elf32_arm_write_section. */
static void
put_arm_insn (struct elf32_arm_link_hash_table * htab,
bfd * output_bfd, bfd_vma val, void * ptr)
{
if (htab->byteswap_code != bfd_little_endian (output_bfd))
bfd_putl32 (val, ptr);
else
bfd_putb32 (val, ptr);
}
/* Store a 16-bit Thumb insn into an output section not processed by
elf32_arm_write_section. */
static void
put_thumb_insn (struct elf32_arm_link_hash_table * htab,
bfd * output_bfd, bfd_vma val, void * ptr)
{
if (htab->byteswap_code != bfd_little_endian (output_bfd))
bfd_putl16 (val, ptr);
else
bfd_putb16 (val, ptr);
}
/* If it's possible to change R_TYPE to a more efficient access
model, return the new reloc type. */
static unsigned
elf32_arm_tls_transition (struct bfd_link_info *info, int r_type,
struct elf_link_hash_entry *h)
{
int is_local = (h == NULL);
if (info->shared || (h && h->root.type == bfd_link_hash_undefweak))
return r_type;
/* We do not support relaxations for Old TLS models. */
switch (r_type)
{
case R_ARM_TLS_GOTDESC:
case R_ARM_TLS_CALL:
case R_ARM_THM_TLS_CALL:
case R_ARM_TLS_DESCSEQ:
case R_ARM_THM_TLS_DESCSEQ:
return is_local ? R_ARM_TLS_LE32 : R_ARM_TLS_IE32;
}
return r_type;
}
static bfd_reloc_status_type elf32_arm_final_link_relocate
(reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *,
const char *, unsigned char, enum arm_st_branch_type,
struct elf_link_hash_entry *, bfd_boolean *, char **);
static unsigned int
arm_stub_required_alignment (enum elf32_arm_stub_type stub_type)
{
switch (stub_type)
{
case arm_stub_a8_veneer_b_cond:
case arm_stub_a8_veneer_b:
case arm_stub_a8_veneer_bl:
return 2;
case arm_stub_long_branch_any_any:
case arm_stub_long_branch_v4t_arm_thumb:
case arm_stub_long_branch_thumb_only:
case arm_stub_long_branch_v4t_thumb_thumb:
case arm_stub_long_branch_v4t_thumb_arm:
case arm_stub_short_branch_v4t_thumb_arm:
case arm_stub_long_branch_any_arm_pic:
case arm_stub_long_branch_any_thumb_pic:
case arm_stub_long_branch_v4t_thumb_thumb_pic:
case arm_stub_long_branch_v4t_arm_thumb_pic:
case arm_stub_long_branch_v4t_thumb_arm_pic:
case arm_stub_long_branch_thumb_only_pic:
case arm_stub_long_branch_any_tls_pic:
case arm_stub_long_branch_v4t_thumb_tls_pic:
case arm_stub_a8_veneer_blx:
return 4;
default:
abort (); /* Should be unreachable. */
}
}
static bfd_boolean
arm_build_one_stub (struct bfd_hash_entry *gen_entry,
void * in_arg)
{
#define MAXRELOCS 2
struct elf32_arm_stub_hash_entry *stub_entry;
struct elf32_arm_link_hash_table *globals;
struct bfd_link_info *info;
asection *stub_sec;
bfd *stub_bfd;
bfd_byte *loc;
bfd_vma sym_value;
int template_size;
int size;
const insn_sequence *template_sequence;
int i;
int stub_reloc_idx[MAXRELOCS] = {-1, -1};
int stub_reloc_offset[MAXRELOCS] = {0, 0};
int nrelocs = 0;
/* Massage our args to the form they really have. */
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
info = (struct bfd_link_info *) in_arg;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return FALSE;
stub_sec = stub_entry->stub_sec;
if ((globals->fix_cortex_a8 < 0)
!= (arm_stub_required_alignment (stub_entry->stub_type) == 2))
/* We have to do less-strictly-aligned fixes last. */
return TRUE;
/* Make a note of the offset within the stubs for this entry. */
stub_entry->stub_offset = stub_sec->size;
loc = stub_sec->contents + stub_entry->stub_offset;
stub_bfd = stub_sec->owner;
/* This is the address of the stub destination. */
sym_value = (stub_entry->target_value
+ stub_entry->target_section->output_offset
+ stub_entry->target_section->output_section->vma);
template_sequence = stub_entry->stub_template;
template_size = stub_entry->stub_template_size;
size = 0;
for (i = 0; i < template_size; i++)
{
switch (template_sequence[i].type)
{
case THUMB16_TYPE:
{
bfd_vma data = (bfd_vma) template_sequence[i].data;
if (template_sequence[i].reloc_addend != 0)
{
/* We've borrowed the reloc_addend field to mean we should
insert a condition code into this (Thumb-1 branch)
instruction. See THUMB16_BCOND_INSN. */
BFD_ASSERT ((data & 0xff00) == 0xd000);
data |= ((stub_entry->orig_insn >> 22) & 0xf) << 8;
}
bfd_put_16 (stub_bfd, data, loc + size);
size += 2;
}
break;
case THUMB32_TYPE:
bfd_put_16 (stub_bfd,
(template_sequence[i].data >> 16) & 0xffff,
loc + size);
bfd_put_16 (stub_bfd, template_sequence[i].data & 0xffff,
loc + size + 2);
if (template_sequence[i].r_type != R_ARM_NONE)
{
stub_reloc_idx[nrelocs] = i;
stub_reloc_offset[nrelocs++] = size;
}
size += 4;
break;
case ARM_TYPE:
bfd_put_32 (stub_bfd, template_sequence[i].data,
loc + size);
/* Handle cases where the target is encoded within the
instruction. */
if (template_sequence[i].r_type == R_ARM_JUMP24)
{
stub_reloc_idx[nrelocs] = i;
stub_reloc_offset[nrelocs++] = size;
}
size += 4;
break;
case DATA_TYPE:
bfd_put_32 (stub_bfd, template_sequence[i].data, loc + size);
stub_reloc_idx[nrelocs] = i;
stub_reloc_offset[nrelocs++] = size;
size += 4;
break;
default:
BFD_FAIL ();
return FALSE;
}
}
stub_sec->size += size;
/* Stub size has already been computed in arm_size_one_stub. Check
consistency. */
BFD_ASSERT (size == stub_entry->stub_size);
/* Destination is Thumb. Force bit 0 to 1 to reflect this. */
if (stub_entry->branch_type == ST_BRANCH_TO_THUMB)
sym_value |= 1;
/* Assume there is at least one and at most MAXRELOCS entries to relocate
in each stub. */
BFD_ASSERT (nrelocs != 0 && nrelocs <= MAXRELOCS);
for (i = 0; i < nrelocs; i++)
if (template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_JUMP24
|| template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_JUMP19
|| template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_CALL
|| template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_XPC22)
{
Elf_Internal_Rela rel;
bfd_boolean unresolved_reloc;
char *error_message;
enum arm_st_branch_type branch_type
= (template_sequence[stub_reloc_idx[i]].r_type != R_ARM_THM_XPC22
? ST_BRANCH_TO_THUMB : ST_BRANCH_TO_ARM);
bfd_vma points_to = sym_value + stub_entry->target_addend;
rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i];
rel.r_info = ELF32_R_INFO (0,
template_sequence[stub_reloc_idx[i]].r_type);
rel.r_addend = template_sequence[stub_reloc_idx[i]].reloc_addend;
if (stub_entry->stub_type == arm_stub_a8_veneer_b_cond && i == 0)
/* The first relocation in the elf32_arm_stub_a8_veneer_b_cond[]
template should refer back to the instruction after the original
branch. */
points_to = sym_value;
/* There may be unintended consequences if this is not true. */
BFD_ASSERT (stub_entry->h == NULL);
/* Note: _bfd_final_link_relocate doesn't handle these relocations
properly. We should probably use this function unconditionally,
rather than only for certain relocations listed in the enclosing
conditional, for the sake of consistency. */
elf32_arm_final_link_relocate (elf32_arm_howto_from_type
(template_sequence[stub_reloc_idx[i]].r_type),
stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel,
points_to, info, stub_entry->target_section, "", STT_FUNC,
branch_type, (struct elf_link_hash_entry *) stub_entry->h,
&unresolved_reloc, &error_message);
}
else
{
Elf_Internal_Rela rel;
bfd_boolean unresolved_reloc;
char *error_message;
bfd_vma points_to = sym_value + stub_entry->target_addend
+ template_sequence[stub_reloc_idx[i]].reloc_addend;
rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i];
rel.r_info = ELF32_R_INFO (0,
template_sequence[stub_reloc_idx[i]].r_type);
rel.r_addend = 0;
elf32_arm_final_link_relocate (elf32_arm_howto_from_type
(template_sequence[stub_reloc_idx[i]].r_type),
stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel,
points_to, info, stub_entry->target_section, "", STT_FUNC,
stub_entry->branch_type,
(struct elf_link_hash_entry *) stub_entry->h, &unresolved_reloc,
&error_message);
}
return TRUE;
#undef MAXRELOCS
}
/* Calculate the template, template size and instruction size for a stub.
Return value is the instruction size. */
static unsigned int
find_stub_size_and_template (enum elf32_arm_stub_type stub_type,
const insn_sequence **stub_template,
int *stub_template_size)
{
const insn_sequence *template_sequence = NULL;
int template_size = 0, i;
unsigned int size;
template_sequence = stub_definitions[stub_type].template_sequence;
if (stub_template)
*stub_template = template_sequence;
template_size = stub_definitions[stub_type].template_size;
if (stub_template_size)
*stub_template_size = template_size;
size = 0;
for (i = 0; i < template_size; i++)
{
switch (template_sequence[i].type)
{
case THUMB16_TYPE:
size += 2;
break;
case ARM_TYPE:
case THUMB32_TYPE:
case DATA_TYPE:
size += 4;
break;
default:
BFD_FAIL ();
return 0;
}
}
return size;
}
/* As above, but don't actually build the stub. Just bump offset so
we know stub section sizes. */
static bfd_boolean
arm_size_one_stub (struct bfd_hash_entry *gen_entry,
void *in_arg ATTRIBUTE_UNUSED)
{
struct elf32_arm_stub_hash_entry *stub_entry;
const insn_sequence *template_sequence;
int template_size, size;
/* Massage our args to the form they really have. */
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
BFD_ASSERT((stub_entry->stub_type > arm_stub_none)
&& stub_entry->stub_type < ARRAY_SIZE(stub_definitions));
size = find_stub_size_and_template (stub_entry->stub_type, &template_sequence,
&template_size);
stub_entry->stub_size = size;
stub_entry->stub_template = template_sequence;
stub_entry->stub_template_size = template_size;
size = (size + 7) & ~7;
stub_entry->stub_sec->size += size;
return TRUE;
}
/* External entry points for sizing and building linker stubs. */
/* Set up various things so that we can make a list of input sections
for each output section included in the link. Returns -1 on error,
0 when no stubs will be needed, and 1 on success. */
int
elf32_arm_setup_section_lists (bfd *output_bfd,
struct bfd_link_info *info)
{
bfd *input_bfd;
unsigned int bfd_count;
int top_id, top_index;
asection *section;
asection **input_list, **list;
bfd_size_type amt;
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
if (htab == NULL)
return 0;
if (! is_elf_hash_table (htab))
return 0;
/* Count the number of input BFDs and find the top input section id. */
for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
input_bfd != NULL;
input_bfd = input_bfd->link_next)
{
bfd_count += 1;
for (section = input_bfd->sections;
section != NULL;
section = section->next)
{
if (top_id < section->id)
top_id = section->id;
}
}
htab->bfd_count = bfd_count;
amt = sizeof (struct map_stub) * (top_id + 1);
htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
if (htab->stub_group == NULL)
return -1;
htab->top_id = top_id;
/* We can't use output_bfd->section_count here to find the top output
section index as some sections may have been removed, and
_bfd_strip_section_from_output doesn't renumber the indices. */
for (section = output_bfd->sections, top_index = 0;
section != NULL;
section = section->next)
{
if (top_index < section->index)
top_index = section->index;
}
htab->top_index = top_index;
amt = sizeof (asection *) * (top_index + 1);
input_list = (asection **) bfd_malloc (amt);
htab->input_list = input_list;
if (input_list == NULL)
return -1;
/* For sections we aren't interested in, mark their entries with a
value we can check later. */
list = input_list + top_index;
do
*list = bfd_abs_section_ptr;
while (list-- != input_list);
for (section = output_bfd->sections;
section != NULL;
section = section->next)
{
if ((section->flags & SEC_CODE) != 0)
input_list[section->index] = NULL;
}
return 1;
}
/* The linker repeatedly calls this function for each input section,
in the order that input sections are linked into output sections.
Build lists of input sections to determine groupings between which
we may insert linker stubs. */
void
elf32_arm_next_input_section (struct bfd_link_info *info,
asection *isec)
{
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
if (htab == NULL)
return;
if (isec->output_section->index <= htab->top_index)
{
asection **list = htab->input_list + isec->output_section->index;
if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0)
{
/* Steal the link_sec pointer for our list. */
#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
/* This happens to make the list in reverse order,
which we reverse later. */
PREV_SEC (isec) = *list;
*list = isec;
}
}
}
/* See whether we can group stub sections together. Grouping stub
sections may result in fewer stubs. More importantly, we need to
put all .init* and .fini* stubs at the end of the .init or
.fini output sections respectively, because glibc splits the
_init and _fini functions into multiple parts. Putting a stub in
the middle of a function is not a good idea. */
static void
group_sections (struct elf32_arm_link_hash_table *htab,
bfd_size_type stub_group_size,
bfd_boolean stubs_always_after_branch)
{
asection **list = htab->input_list;
do
{
asection *tail = *list;
asection *head;
if (tail == bfd_abs_section_ptr)
continue;
/* Reverse the list: we must avoid placing stubs at the
beginning of the section because the beginning of the text
section may be required for an interrupt vector in bare metal
code. */
#define NEXT_SEC PREV_SEC
head = NULL;
while (tail != NULL)
{
/* Pop from tail. */
asection *item = tail;
tail = PREV_SEC (item);
/* Push on head. */
NEXT_SEC (item) = head;
head = item;
}
while (head != NULL)
{
asection *curr;
asection *next;
bfd_vma stub_group_start = head->output_offset;
bfd_vma end_of_next;
curr = head;
while (NEXT_SEC (curr) != NULL)
{
next = NEXT_SEC (curr);
end_of_next = next->output_offset + next->size;
if (end_of_next - stub_group_start >= stub_group_size)
/* End of NEXT is too far from start, so stop. */
break;
/* Add NEXT to the group. */
curr = next;
}
/* OK, the size from the start to the start of CURR is less
than stub_group_size and thus can be handled by one stub
section. (Or the head section is itself larger than
stub_group_size, in which case we may be toast.)
We should really be keeping track of the total size of
stubs added here, as stubs contribute to the final output
section size. */
do
{
next = NEXT_SEC (head);
/* Set up this stub group. */
htab->stub_group[head->id].link_sec = curr;
}
while (head != curr && (head = next) != NULL);
/* But wait, there's more! Input sections up to stub_group_size
bytes after the stub section can be handled by it too. */
if (!stubs_always_after_branch)
{
stub_group_start = curr->output_offset + curr->size;
while (next != NULL)
{
end_of_next = next->output_offset + next->size;
if (end_of_next - stub_group_start >= stub_group_size)
/* End of NEXT is too far from stubs, so stop. */
break;
/* Add NEXT to the stub group. */
head = next;
next = NEXT_SEC (head);
htab->stub_group[head->id].link_sec = curr;
}
}
head = next;
}
}
while (list++ != htab->input_list + htab->top_index);
free (htab->input_list);
#undef PREV_SEC
#undef NEXT_SEC
}
/* Comparison function for sorting/searching relocations relating to Cortex-A8
erratum fix. */
static int
a8_reloc_compare (const void *a, const void *b)
{
const struct a8_erratum_reloc *ra = (const struct a8_erratum_reloc *) a;
const struct a8_erratum_reloc *rb = (const struct a8_erratum_reloc *) b;
if (ra->from < rb->from)
return -1;
else if (ra->from > rb->from)
return 1;
else
return 0;
}
static struct elf_link_hash_entry *find_thumb_glue (struct bfd_link_info *,
const char *, char **);
/* Helper function to scan code for sequences which might trigger the Cortex-A8
branch/TLB erratum. Fill in the table described by A8_FIXES_P,
NUM_A8_FIXES_P, A8_FIX_TABLE_SIZE_P. Returns true if an error occurs, false
otherwise. */
static bfd_boolean
cortex_a8_erratum_scan (bfd *input_bfd,
struct bfd_link_info *info,
struct a8_erratum_fix **a8_fixes_p,
unsigned int *num_a8_fixes_p,
unsigned int *a8_fix_table_size_p,
struct a8_erratum_reloc *a8_relocs,
unsigned int num_a8_relocs,
unsigned prev_num_a8_fixes,
bfd_boolean *stub_changed_p)
{
asection *section;
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
struct a8_erratum_fix *a8_fixes = *a8_fixes_p;
unsigned int num_a8_fixes = *num_a8_fixes_p;
unsigned int a8_fix_table_size = *a8_fix_table_size_p;
if (htab == NULL)
return FALSE;
for (section = input_bfd->sections;
section != NULL;
section = section->next)
{
bfd_byte *contents = NULL;
struct _arm_elf_section_data *sec_data;
unsigned int span;
bfd_vma base_vma;
if (elf_section_type (section) != SHT_PROGBITS
|| (elf_section_flags (section) & SHF_EXECINSTR) == 0
|| (section->flags & SEC_EXCLUDE) != 0
|| (section->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
|| (section->output_section == bfd_abs_section_ptr))
continue;
base_vma = section->output_section->vma + section->output_offset;
if (elf_section_data (section)->this_hdr.contents != NULL)
contents = elf_section_data (section)->this_hdr.contents;
else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
return TRUE;
sec_data = elf32_arm_section_data (section);
for (span = 0; span < sec_data->mapcount; span++)
{
unsigned int span_start = sec_data->map[span].vma;
unsigned int span_end = (span == sec_data->mapcount - 1)
? section->size : sec_data->map[span + 1].vma;
unsigned int i;
char span_type = sec_data->map[span].type;
bfd_boolean last_was_32bit = FALSE, last_was_branch = FALSE;
if (span_type != 't')
continue;
/* Span is entirely within a single 4KB region: skip scanning. */
if (((base_vma + span_start) & ~0xfff)
== ((base_vma + span_end) & ~0xfff))
continue;
/* Scan for 32-bit Thumb-2 branches which span two 4K regions, where:
* The opcode is BLX.W, BL.W, B.W, Bcc.W
* The branch target is in the same 4KB region as the
first half of the branch.
* The instruction before the branch is a 32-bit
length non-branch instruction. */
for (i = span_start; i < span_end;)
{
unsigned int insn = bfd_getl16 (&contents[i]);
bfd_boolean insn_32bit = FALSE, is_blx = FALSE, is_b = FALSE;
bfd_boolean is_bl = FALSE, is_bcc = FALSE, is_32bit_branch;
if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000)
insn_32bit = TRUE;
if (insn_32bit)
{
/* Load the rest of the insn (in manual-friendly order). */
insn = (insn << 16) | bfd_getl16 (&contents[i + 2]);
/* Encoding T4: B<c>.W. */
is_b = (insn & 0xf800d000) == 0xf0009000;
/* Encoding T1: BL<c>.W. */
is_bl = (insn & 0xf800d000) == 0xf000d000;
/* Encoding T2: BLX<c>.W. */
is_blx = (insn & 0xf800d000) == 0xf000c000;
/* Encoding T3: B<c>.W (not permitted in IT block). */
is_bcc = (insn & 0xf800d000) == 0xf0008000
&& (insn & 0x07f00000) != 0x03800000;
}
is_32bit_branch = is_b || is_bl || is_blx || is_bcc;
if (((base_vma + i) & 0xfff) == 0xffe
&& insn_32bit
&& is_32bit_branch
&& last_was_32bit
&& ! last_was_branch)
{
bfd_signed_vma offset = 0;
bfd_boolean force_target_arm = FALSE;
bfd_boolean force_target_thumb = FALSE;
bfd_vma target;
enum elf32_arm_stub_type stub_type = arm_stub_none;
struct a8_erratum_reloc key, *found;
bfd_boolean use_plt = FALSE;
key.from = base_vma + i;
found = (struct a8_erratum_reloc *)
bsearch (&key, a8_relocs, num_a8_relocs,
sizeof (struct a8_erratum_reloc),
&a8_reloc_compare);
if (found)
{
char *error_message = NULL;
struct elf_link_hash_entry *entry;
/* We don't care about the error returned from this
function, only if there is glue or not. */
entry = find_thumb_glue (info, found->sym_name,
&error_message);
if (entry)
found->non_a8_stub = TRUE;
/* Keep a simpler condition, for the sake of clarity. */
if (htab->root.splt != NULL && found->hash != NULL
&& found->hash->root.plt.offset != (bfd_vma) -1)
use_plt = TRUE;
if (found->r_type == R_ARM_THM_CALL)
{
if (found->branch_type == ST_BRANCH_TO_ARM
|| use_plt)
force_target_arm = TRUE;
else
force_target_thumb = TRUE;
}
}
/* Check if we have an offending branch instruction. */
if (found && found->non_a8_stub)
/* We've already made a stub for this instruction, e.g.
it's a long branch or a Thumb->ARM stub. Assume that
stub will suffice to work around the A8 erratum (see
setting of always_after_branch above). */
;
else if (is_bcc)
{
offset = (insn & 0x7ff) << 1;
offset |= (insn & 0x3f0000) >> 4;
offset |= (insn & 0x2000) ? 0x40000 : 0;
offset |= (insn & 0x800) ? 0x80000 : 0;
offset |= (insn & 0x4000000) ? 0x100000 : 0;
if (offset & 0x100000)
offset |= ~ ((bfd_signed_vma) 0xfffff);
stub_type = arm_stub_a8_veneer_b_cond;
}
else if (is_b || is_bl || is_blx)
{
int s = (insn & 0x4000000) != 0;
int j1 = (insn & 0x2000) != 0;
int j2 = (insn & 0x800) != 0;
int i1 = !(j1 ^ s);
int i2 = !(j2 ^ s);
offset = (insn & 0x7ff) << 1;
offset |= (insn & 0x3ff0000) >> 4;
offset |= i2 << 22;
offset |= i1 << 23;
offset |= s << 24;
if (offset & 0x1000000)
offset |= ~ ((bfd_signed_vma) 0xffffff);
if (is_blx)
offset &= ~ ((bfd_signed_vma) 3);
stub_type = is_blx ? arm_stub_a8_veneer_blx :
is_bl ? arm_stub_a8_veneer_bl : arm_stub_a8_veneer_b;
}
if (stub_type != arm_stub_none)
{
bfd_vma pc_for_insn = base_vma + i + 4;
/* The original instruction is a BL, but the target is
an ARM instruction. If we were not making a stub,
the BL would have been converted to a BLX. Use the
BLX stub instead in that case. */
if (htab->use_blx && force_target_arm
&& stub_type == arm_stub_a8_veneer_bl)
{
stub_type = arm_stub_a8_veneer_blx;
is_blx = TRUE;
is_bl = FALSE;
}
/* Conversely, if the original instruction was
BLX but the target is Thumb mode, use the BL
stub. */
else if (force_target_thumb
&& stub_type == arm_stub_a8_veneer_blx)
{
stub_type = arm_stub_a8_veneer_bl;
is_blx = FALSE;
is_bl = TRUE;
}
if (is_blx)
pc_for_insn &= ~ ((bfd_vma) 3);
/* If we found a relocation, use the proper destination,
not the offset in the (unrelocated) instruction.
Note this is always done if we switched the stub type
above. */
if (found)
offset =
(bfd_signed_vma) (found->destination - pc_for_insn);
/* If the stub will use a Thumb-mode branch to a
PLT target, redirect it to the preceding Thumb
entry point. */
if (stub_type != arm_stub_a8_veneer_blx && use_plt)
offset -= PLT_THUMB_STUB_SIZE;
target = pc_for_insn + offset;
/* The BLX stub is ARM-mode code. Adjust the offset to
take the different PC value (+8 instead of +4) into
account. */
if (stub_type == arm_stub_a8_veneer_blx)
offset += 4;
if (((base_vma + i) & ~0xfff) == (target & ~0xfff))
{
char *stub_name = NULL;
if (num_a8_fixes == a8_fix_table_size)
{
a8_fix_table_size *= 2;
a8_fixes = (struct a8_erratum_fix *)
bfd_realloc (a8_fixes,
sizeof (struct a8_erratum_fix)
* a8_fix_table_size);
}
if (num_a8_fixes < prev_num_a8_fixes)
{
/* If we're doing a subsequent scan,
check if we've found the same fix as
before, and try and reuse the stub
name. */
stub_name = a8_fixes[num_a8_fixes].stub_name;
if ((a8_fixes[num_a8_fixes].section != section)
|| (a8_fixes[num_a8_fixes].offset != i))
{
free (stub_name);
stub_name = NULL;
*stub_changed_p = TRUE;
}
}
if (!stub_name)
{
stub_name = (char *) bfd_malloc (8 + 1 + 8 + 1);
if (stub_name != NULL)
sprintf (stub_name, "%x:%x", section->id, i);
}
a8_fixes[num_a8_fixes].input_bfd = input_bfd;
a8_fixes[num_a8_fixes].section = section;
a8_fixes[num_a8_fixes].offset = i;
a8_fixes[num_a8_fixes].addend = offset;
a8_fixes[num_a8_fixes].orig_insn = insn;
a8_fixes[num_a8_fixes].stub_name = stub_name;
a8_fixes[num_a8_fixes].stub_type = stub_type;
a8_fixes[num_a8_fixes].branch_type =
is_blx ? ST_BRANCH_TO_ARM : ST_BRANCH_TO_THUMB;
num_a8_fixes++;
}
}
}
i += insn_32bit ? 4 : 2;
last_was_32bit = insn_32bit;
last_was_branch = is_32bit_branch;
}
}
if (elf_section_data (section)->this_hdr.contents == NULL)
free (contents);
}
*a8_fixes_p = a8_fixes;
*num_a8_fixes_p = num_a8_fixes;
*a8_fix_table_size_p = a8_fix_table_size;
return FALSE;
}
/* Determine and set the size of the stub section for a final link.
The basic idea here is to examine all the relocations looking for
PC-relative calls to a target that is unreachable with a "bl"
instruction. */
bfd_boolean
elf32_arm_size_stubs (bfd *output_bfd,
bfd *stub_bfd,
struct bfd_link_info *info,
bfd_signed_vma group_size,
asection * (*add_stub_section) (const char *, asection *),
void (*layout_sections_again) (void))
{
bfd_size_type stub_group_size;
bfd_boolean stubs_always_after_branch;
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
struct a8_erratum_fix *a8_fixes = NULL;
unsigned int num_a8_fixes = 0, a8_fix_table_size = 10;
struct a8_erratum_reloc *a8_relocs = NULL;
unsigned int num_a8_relocs = 0, a8_reloc_table_size = 10, i;
if (htab == NULL)
return FALSE;
if (htab->fix_cortex_a8)
{
a8_fixes = (struct a8_erratum_fix *)
bfd_zmalloc (sizeof (struct a8_erratum_fix) * a8_fix_table_size);
a8_relocs = (struct a8_erratum_reloc *)
bfd_zmalloc (sizeof (struct a8_erratum_reloc) * a8_reloc_table_size);
}
/* Propagate mach to stub bfd, because it may not have been
finalized when we created stub_bfd. */
bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
bfd_get_mach (output_bfd));
/* Stash our params away. */
htab->stub_bfd = stub_bfd;
htab->add_stub_section = add_stub_section;
htab->layout_sections_again = layout_sections_again;
stubs_always_after_branch = group_size < 0;
/* The Cortex-A8 erratum fix depends on stubs not being in the same 4K page
as the first half of a 32-bit branch straddling two 4K pages. This is a
crude way of enforcing that. */
if (htab->fix_cortex_a8)
stubs_always_after_branch = 1;
if (group_size < 0)
stub_group_size = -group_size;
else
stub_group_size = group_size;
if (stub_group_size == 1)
{
/* Default values. */
/* Thumb branch range is +-4MB has to be used as the default
maximum size (a given section can contain both ARM and Thumb
code, so the worst case has to be taken into account).
This value is 24K less than that, which allows for 2025
12-byte stubs. If we exceed that, then we will fail to link.
The user will have to relink with an explicit group size
option. */
stub_group_size = 4170000;
}
group_sections (htab, stub_group_size, stubs_always_after_branch);
/* If we're applying the cortex A8 fix, we need to determine the
program header size now, because we cannot change it later --
that could alter section placements. Notice the A8 erratum fix
ends up requiring the section addresses to remain unchanged
modulo the page size. That's something we cannot represent
inside BFD, and we don't want to force the section alignment to
be the page size. */
if (htab->fix_cortex_a8)
(*htab->layout_sections_again) ();
while (1)
{
bfd *input_bfd;
unsigned int bfd_indx;
asection *stub_sec;
bfd_boolean stub_changed = FALSE;
unsigned prev_num_a8_fixes = num_a8_fixes;
num_a8_fixes = 0;
for (input_bfd = info->input_bfds, bfd_indx = 0;
input_bfd != NULL;
input_bfd = input_bfd->link_next, bfd_indx++)
{
Elf_Internal_Shdr *symtab_hdr;
asection *section;
Elf_Internal_Sym *local_syms = NULL;
num_a8_relocs = 0;
/* We'll need the symbol table in a second. */
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
if (symtab_hdr->sh_info == 0)
continue;
/* Walk over each section attached to the input bfd. */
for (section = input_bfd->sections;
section != NULL;
section = section->next)
{
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
/* If there aren't any relocs, then there's nothing more
to do. */
if ((section->flags & SEC_RELOC) == 0
|| section->reloc_count == 0
|| (section->flags & SEC_CODE) == 0)
continue;
/* If this section is a link-once section that will be
discarded, then don't create any stubs. */
if (section->output_section == NULL
|| section->output_section->owner != output_bfd)
continue;
/* Get the relocs. */
internal_relocs
= _bfd_elf_link_read_relocs (input_bfd, section, NULL,
NULL, info->keep_memory);
if (internal_relocs == NULL)
goto error_ret_free_local;
/* Now examine each relocation. */
irela = internal_relocs;
irelaend = irela + section->reloc_count;
for (; irela < irelaend; irela++)
{
unsigned int r_type, r_indx;
enum elf32_arm_stub_type stub_type;
struct elf32_arm_stub_hash_entry *stub_entry;
asection *sym_sec;
bfd_vma sym_value;
bfd_vma destination;
struct elf32_arm_link_hash_entry *hash;
const char *sym_name;
char *stub_name;
const asection *id_sec;
unsigned char st_type;
enum arm_st_branch_type branch_type;
bfd_boolean created_stub = FALSE;
r_type = ELF32_R_TYPE (irela->r_info);
r_indx = ELF32_R_SYM (irela->r_info);
if (r_type >= (unsigned int) R_ARM_max)
{
bfd_set_error (bfd_error_bad_value);
error_ret_free_internal:
if (elf_section_data (section)->relocs == NULL)
free (internal_relocs);
goto error_ret_free_local;
}
hash = NULL;
if (r_indx >= symtab_hdr->sh_info)
hash = elf32_arm_hash_entry
(elf_sym_hashes (input_bfd)
[r_indx - symtab_hdr->sh_info]);
/* Only look for stubs on branch instructions, or
non-relaxed TLSCALL */
if ((r_type != (unsigned int) R_ARM_CALL)
&& (r_type != (unsigned int) R_ARM_THM_CALL)
&& (r_type != (unsigned int) R_ARM_JUMP24)
&& (r_type != (unsigned int) R_ARM_THM_JUMP19)
&& (r_type != (unsigned int) R_ARM_THM_XPC22)
&& (r_type != (unsigned int) R_ARM_THM_JUMP24)
&& (r_type != (unsigned int) R_ARM_PLT32)
&& !((r_type == (unsigned int) R_ARM_TLS_CALL
|| r_type == (unsigned int) R_ARM_THM_TLS_CALL)
&& r_type == elf32_arm_tls_transition
(info, r_type, &hash->root)
&& ((hash ? hash->tls_type
: (elf32_arm_local_got_tls_type
(input_bfd)[r_indx]))
& GOT_TLS_GDESC) != 0))
continue;
/* Now determine the call target, its name, value,
section. */
sym_sec = NULL;
sym_value = 0;
destination = 0;
sym_name = NULL;
if (r_type == (unsigned int) R_ARM_TLS_CALL
|| r_type == (unsigned int) R_ARM_THM_TLS_CALL)
{
/* A non-relaxed TLS call. The target is the
plt-resident trampoline and nothing to do
with the symbol. */
BFD_ASSERT (htab->tls_trampoline > 0);
sym_sec = htab->root.splt;
sym_value = htab->tls_trampoline;
hash = 0;
st_type = STT_FUNC;
branch_type = ST_BRANCH_TO_ARM;
}
else if (!hash)
{
/* It's a local symbol. */
Elf_Internal_Sym *sym;
if (local_syms == NULL)
{
local_syms
= (Elf_Internal_Sym *) symtab_hdr->contents;
if (local_syms == NULL)
local_syms
= bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
symtab_hdr->sh_info, 0,
NULL, NULL, NULL);
if (local_syms == NULL)
goto error_ret_free_internal;
}
sym = local_syms + r_indx;
if (sym->st_shndx == SHN_UNDEF)
sym_sec = bfd_und_section_ptr;
else if (sym->st_shndx == SHN_ABS)
sym_sec = bfd_abs_section_ptr;
else if (sym->st_shndx == SHN_COMMON)
sym_sec = bfd_com_section_ptr;
else
sym_sec =
bfd_section_from_elf_index (input_bfd, sym->st_shndx);
if (!sym_sec)
/* This is an undefined symbol. It can never
be resolved. */
continue;
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
sym_value = sym->st_value;
destination = (sym_value + irela->r_addend
+ sym_sec->output_offset
+ sym_sec->output_section->vma);
st_type = ELF_ST_TYPE (sym->st_info);
branch_type = ARM_SYM_BRANCH_TYPE (sym);
sym_name
= bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym->st_name);
}
else
{
/* It's an external symbol. */
while (hash->root.root.type == bfd_link_hash_indirect
|| hash->root.root.type == bfd_link_hash_warning)
hash = ((struct elf32_arm_link_hash_entry *)
hash->root.root.u.i.link);
if (hash->root.root.type == bfd_link_hash_defined
|| hash->root.root.type == bfd_link_hash_defweak)
{
sym_sec = hash->root.root.u.def.section;
sym_value = hash->root.root.u.def.value;
struct elf32_arm_link_hash_table *globals =
elf32_arm_hash_table (info);
/* For a destination in a shared library,
use the PLT stub as target address to
decide whether a branch stub is
needed. */
if (globals != NULL
&& globals->root.splt != NULL
&& hash != NULL
&& hash->root.plt.offset != (bfd_vma) -1)
{
sym_sec = globals->root.splt;
sym_value = hash->root.plt.offset;
if (sym_sec->output_section != NULL)
destination = (sym_value
+ sym_sec->output_offset
+ sym_sec->output_section->vma);
}
else if (sym_sec->output_section != NULL)
destination = (sym_value + irela->r_addend
+ sym_sec->output_offset
+ sym_sec->output_section->vma);
}
else if ((hash->root.root.type == bfd_link_hash_undefined)
|| (hash->root.root.type == bfd_link_hash_undefweak))
{
/* For a shared library, use the PLT stub as
target address to decide whether a long
branch stub is needed.
For absolute code, they cannot be handled. */
struct elf32_arm_link_hash_table *globals =
elf32_arm_hash_table (info);
if (globals != NULL
&& globals->root.splt != NULL
&& hash != NULL
&& hash->root.plt.offset != (bfd_vma) -1)
{
sym_sec = globals->root.splt;
sym_value = hash->root.plt.offset;
if (sym_sec->output_section != NULL)
destination = (sym_value
+ sym_sec->output_offset
+ sym_sec->output_section->vma);
}
else
continue;
}
else
{
bfd_set_error (bfd_error_bad_value);
goto error_ret_free_internal;
}
st_type = hash->root.type;
branch_type = hash->root.target_internal;
sym_name = hash->root.root.root.string;
}
do
{
/* Determine what (if any) linker stub is needed. */
stub_type = arm_type_of_stub (info, section, irela,
st_type, &branch_type,
hash, destination, sym_sec,
input_bfd, sym_name);
if (stub_type == arm_stub_none)
break;
/* Support for grouping stub sections. */
id_sec = htab->stub_group[section->id].link_sec;
/* Get the name of this stub. */
stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash,
irela, stub_type);
if (!stub_name)
goto error_ret_free_internal;
/* We've either created a stub for this reloc already,
or we are about to. */
created_stub = TRUE;
stub_entry = arm_stub_hash_lookup
(&htab->stub_hash_table, stub_name,
FALSE, FALSE);
if (stub_entry != NULL)
{
/* The proper stub has already been created. */
free (stub_name);
stub_entry->target_value = sym_value;
break;
}
stub_entry = elf32_arm_add_stub (stub_name, section,
htab);
if (stub_entry == NULL)
{
free (stub_name);
goto error_ret_free_internal;
}
stub_entry->target_value = sym_value;
stub_entry->target_section = sym_sec;
stub_entry->stub_type = stub_type;
stub_entry->h = hash;
stub_entry->branch_type = branch_type;
if (sym_name == NULL)
sym_name = "unnamed";
stub_entry->output_name = (char *)
bfd_alloc (htab->stub_bfd,
sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
+ strlen (sym_name));
if (stub_entry->output_name == NULL)
{
free (stub_name);
goto error_ret_free_internal;
}
/* For historical reasons, use the existing names for
ARM-to-Thumb and Thumb-to-ARM stubs. */
if ((r_type == (unsigned int) R_ARM_THM_CALL
|| r_type == (unsigned int) R_ARM_THM_JUMP24)
&& branch_type == ST_BRANCH_TO_ARM)
sprintf (stub_entry->output_name,
THUMB2ARM_GLUE_ENTRY_NAME, sym_name);
else if ((r_type == (unsigned int) R_ARM_CALL
|| r_type == (unsigned int) R_ARM_JUMP24)
&& branch_type == ST_BRANCH_TO_THUMB)
sprintf (stub_entry->output_name,
ARM2THUMB_GLUE_ENTRY_NAME, sym_name);
else
sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
sym_name);
stub_changed = TRUE;
}
while (0);
/* Look for relocations which might trigger Cortex-A8
erratum. */
if (htab->fix_cortex_a8
&& (r_type == (unsigned int) R_ARM_THM_JUMP24
|| r_type == (unsigned int) R_ARM_THM_JUMP19
|| r_type == (unsigned int) R_ARM_THM_CALL
|| r_type == (unsigned int) R_ARM_THM_XPC22))
{
bfd_vma from = section->output_section->vma
+ section->output_offset
+ irela->r_offset;
if ((from & 0xfff) == 0xffe)
{
/* Found a candidate. Note we haven't checked the
destination is within 4K here: if we do so (and
don't create an entry in a8_relocs) we can't tell
that a branch should have been relocated when
scanning later. */
if (num_a8_relocs == a8_reloc_table_size)
{
a8_reloc_table_size *= 2;
a8_relocs = (struct a8_erratum_reloc *)
bfd_realloc (a8_relocs,
sizeof (struct a8_erratum_reloc)
* a8_reloc_table_size);
}
a8_relocs[num_a8_relocs].from = from;
a8_relocs[num_a8_relocs].destination = destination;
a8_relocs[num_a8_relocs].r_type = r_type;
a8_relocs[num_a8_relocs].branch_type = branch_type;
a8_relocs[num_a8_relocs].sym_name = sym_name;
a8_relocs[num_a8_relocs].non_a8_stub = created_stub;
a8_relocs[num_a8_relocs].hash = hash;
num_a8_relocs++;
}
}
}
/* We're done with the internal relocs, free them. */
if (elf_section_data (section)->relocs == NULL)
free (internal_relocs);
}
if (htab->fix_cortex_a8)
{
/* Sort relocs which might apply to Cortex-A8 erratum. */
qsort (a8_relocs, num_a8_relocs,
sizeof (struct a8_erratum_reloc),
&a8_reloc_compare);
/* Scan for branches which might trigger Cortex-A8 erratum. */
if (cortex_a8_erratum_scan (input_bfd, info, &a8_fixes,
&num_a8_fixes, &a8_fix_table_size,
a8_relocs, num_a8_relocs,
prev_num_a8_fixes, &stub_changed)
!= 0)
goto error_ret_free_local;
}
}
if (prev_num_a8_fixes != num_a8_fixes)
stub_changed = TRUE;
if (!stub_changed)
break;
/* OK, we've added some stubs. Find out the new size of the
stub sections. */
for (stub_sec = htab->stub_bfd->sections;
stub_sec != NULL;
stub_sec = stub_sec->next)
{
/* Ignore non-stub sections. */
if (!strstr (stub_sec->name, STUB_SUFFIX))
continue;
stub_sec->size = 0;
}
bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
/* Add Cortex-A8 erratum veneers to stub section sizes too. */
if (htab->fix_cortex_a8)
for (i = 0; i < num_a8_fixes; i++)
{
stub_sec = elf32_arm_create_or_find_stub_sec (NULL,
a8_fixes[i].section, htab);
if (stub_sec == NULL)
goto error_ret_free_local;
stub_sec->size
+= find_stub_size_and_template (a8_fixes[i].stub_type, NULL,
NULL);
}
/* Ask the linker to do its stuff. */
(*htab->layout_sections_again) ();
}
/* Add stubs for Cortex-A8 erratum fixes now. */
if (htab->fix_cortex_a8)
{
for (i = 0; i < num_a8_fixes; i++)
{
struct elf32_arm_stub_hash_entry *stub_entry;
char *stub_name = a8_fixes[i].stub_name;
asection *section = a8_fixes[i].section;
unsigned int section_id = a8_fixes[i].section->id;
asection *link_sec = htab->stub_group[section_id].link_sec;
asection *stub_sec = htab->stub_group[section_id].stub_sec;
const insn_sequence *template_sequence;
int template_size, size = 0;
stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
TRUE, FALSE);
if (stub_entry == NULL)
{
(*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
section->owner,
stub_name);
return FALSE;
}
stub_entry->stub_sec = stub_sec;
stub_entry->stub_offset = 0;
stub_entry->id_sec = link_sec;
stub_entry->stub_type = a8_fixes[i].stub_type;
stub_entry->target_section = a8_fixes[i].section;
stub_entry->target_value = a8_fixes[i].offset;
stub_entry->target_addend = a8_fixes[i].addend;
stub_entry->orig_insn = a8_fixes[i].orig_insn;
stub_entry->branch_type = a8_fixes[i].branch_type;
size = find_stub_size_and_template (a8_fixes[i].stub_type,
&template_sequence,
&template_size);
stub_entry->stub_size = size;
stub_entry->stub_template = template_sequence;
stub_entry->stub_template_size = template_size;
}
/* Stash the Cortex-A8 erratum fix array for use later in
elf32_arm_write_section(). */
htab->a8_erratum_fixes = a8_fixes;
htab->num_a8_erratum_fixes = num_a8_fixes;
}
else
{
htab->a8_erratum_fixes = NULL;
htab->num_a8_erratum_fixes = 0;
}
return TRUE;
error_ret_free_local:
return FALSE;
}
/* Build all the stubs associated with the current output file. The
stubs are kept in a hash table attached to the main linker hash
table. We also set up the .plt entries for statically linked PIC
functions here. This function is called via arm_elf_finish in the
linker. */
bfd_boolean
elf32_arm_build_stubs (struct bfd_link_info *info)
{
asection *stub_sec;
struct bfd_hash_table *table;
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
for (stub_sec = htab->stub_bfd->sections;
stub_sec != NULL;
stub_sec = stub_sec->next)
{
bfd_size_type size;
/* Ignore non-stub sections. */
if (!strstr (stub_sec->name, STUB_SUFFIX))
continue;
/* Allocate memory to hold the linker stubs. */
size = stub_sec->size;
stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size);
if (stub_sec->contents == NULL && size != 0)
return FALSE;
stub_sec->size = 0;
}
/* Build the stubs as directed by the stub hash table. */
table = &htab->stub_hash_table;
bfd_hash_traverse (table, arm_build_one_stub, info);
if (htab->fix_cortex_a8)
{
/* Place the cortex a8 stubs last. */
htab->fix_cortex_a8 = -1;
bfd_hash_traverse (table, arm_build_one_stub, info);
}
return TRUE;
}
/* Locate the Thumb encoded calling stub for NAME. */
static struct elf_link_hash_entry *
find_thumb_glue (struct bfd_link_info *link_info,
const char *name,
char **error_message)
{
char *tmp_name;
struct elf_link_hash_entry *hash;
struct elf32_arm_link_hash_table *hash_table;
/* We need a pointer to the armelf specific hash table. */
hash_table = elf32_arm_hash_table (link_info);
if (hash_table == NULL)
return NULL;
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
+ strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
BFD_ASSERT (tmp_name);
sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
hash = elf_link_hash_lookup
(&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
if (hash == NULL
&& asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
tmp_name, name) == -1)
*error_message = (char *) bfd_errmsg (bfd_error_system_call);
free (tmp_name);
return hash;
}
/* Locate the ARM encoded calling stub for NAME. */
static struct elf_link_hash_entry *
find_arm_glue (struct bfd_link_info *link_info,
const char *name,
char **error_message)
{
char *tmp_name;
struct elf_link_hash_entry *myh;
struct elf32_arm_link_hash_table *hash_table;
/* We need a pointer to the elfarm specific hash table. */
hash_table = elf32_arm_hash_table (link_info);
if (hash_table == NULL)
return NULL;
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
+ strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
BFD_ASSERT (tmp_name);
sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
myh = elf_link_hash_lookup
(&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
if (myh == NULL
&& asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
tmp_name, name) == -1)
*error_message = (char *) bfd_errmsg (bfd_error_system_call);
free (tmp_name);
return myh;
}
/* ARM->Thumb glue (static images):
.arm
__func_from_arm:
ldr r12, __func_addr
bx r12
__func_addr:
.word func @ behave as if you saw a ARM_32 reloc.
(v5t static images)
.arm
__func_from_arm:
ldr pc, __func_addr
__func_addr:
.word func @ behave as if you saw a ARM_32 reloc.
(relocatable images)
.arm
__func_from_arm:
ldr r12, __func_offset
add r12, r12, pc
bx r12
__func_offset:
.word func - . */
#define ARM2THUMB_STATIC_GLUE_SIZE 12
static const insn32 a2t1_ldr_insn = 0xe59fc000;
static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
static const insn32 a2t3_func_addr_insn = 0x00000001;
#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
static const insn32 a2t2v5_func_addr_insn = 0x00000001;
#define ARM2THUMB_PIC_GLUE_SIZE 16
static const insn32 a2t1p_ldr_insn = 0xe59fc004;
static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
/* Thumb->ARM: Thumb->(non-interworking aware) ARM
.thumb .thumb
.align 2 .align 2
__func_from_thumb: __func_from_thumb:
bx pc push {r6, lr}
nop ldr r6, __func_addr
.arm mov lr, pc
b func bx r6
.arm
;; back_to_thumb
ldmia r13! {r6, lr}
bx lr
__func_addr:
.word func */
#define THUMB2ARM_GLUE_SIZE 8
static const insn16 t2a1_bx_pc_insn = 0x4778;
static const insn16 t2a2_noop_insn = 0x46c0;
static const insn32 t2a3_b_insn = 0xea000000;
#define VFP11_ERRATUM_VENEER_SIZE 8
#define ARM_BX_VENEER_SIZE 12
static const insn32 armbx1_tst_insn = 0xe3100001;
static const insn32 armbx2_moveq_insn = 0x01a0f000;
static const insn32 armbx3_bx_insn = 0xe12fff10;
#ifndef ELFARM_NABI_C_INCLUDED
static void
arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
{
asection * s;
bfd_byte * contents;
if (size == 0)
{
/* Do not include empty glue sections in the output. */
if (abfd != NULL)
{
s = bfd_get_section_by_name (abfd, name);
if (s != NULL)
s->flags |= SEC_EXCLUDE;
}
return;
}
BFD_ASSERT (abfd != NULL);
s = bfd_get_section_by_name (abfd, name);
BFD_ASSERT (s != NULL);
contents = (bfd_byte *) bfd_alloc (abfd, size);
BFD_ASSERT (s->size == size);
s->contents = contents;
}
bfd_boolean
bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
{
struct elf32_arm_link_hash_table * globals;
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
globals->arm_glue_size,
ARM2THUMB_GLUE_SECTION_NAME);
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
globals->thumb_glue_size,
THUMB2ARM_GLUE_SECTION_NAME);
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
globals->vfp11_erratum_glue_size,
VFP11_ERRATUM_VENEER_SECTION_NAME);
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
globals->bx_glue_size,
ARM_BX_GLUE_SECTION_NAME);
return TRUE;
}
/* Allocate space and symbols for calling a Thumb function from Arm mode.
returns the symbol identifying the stub. */
static struct elf_link_hash_entry *
record_arm_to_thumb_glue (struct bfd_link_info * link_info,
struct elf_link_hash_entry * h)
{
const char * name = h->root.root.string;
asection * s;
char * tmp_name;
struct elf_link_hash_entry * myh;
struct bfd_link_hash_entry * bh;
struct elf32_arm_link_hash_table * globals;
bfd_vma val;
bfd_size_type size;
globals = elf32_arm_hash_table (link_info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
s = bfd_get_section_by_name
(globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
BFD_ASSERT (s != NULL);
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
+ strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
BFD_ASSERT (tmp_name);
sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
myh = elf_link_hash_lookup
(&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
if (myh != NULL)
{
/* We've already seen this guy. */
free (tmp_name);
return myh;
}
/* The only trick here is using hash_table->arm_glue_size as the value.
Even though the section isn't allocated yet, this is where we will be
putting it. The +1 on the value marks that the stub has not been
output yet - not that it is a Thumb function. */
bh = NULL;
val = globals->arm_glue_size + 1;
_bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
tmp_name, BSF_GLOBAL, s, val,
NULL, TRUE, FALSE, &bh);
myh = (struct elf_link_hash_entry *) bh;
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
myh->forced_local = 1;
free (tmp_name);
if (link_info->shared || globals->root.is_relocatable_executable
|| globals->pic_veneer)
size = ARM2THUMB_PIC_GLUE_SIZE;
else if (globals->use_blx)
size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
else
size = ARM2THUMB_STATIC_GLUE_SIZE;
s->size += size;
globals->arm_glue_size += size;
return myh;
}
/* Allocate space for ARMv4 BX veneers. */
static void
record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
{
asection * s;
struct elf32_arm_link_hash_table *globals;
char *tmp_name;
struct elf_link_hash_entry *myh;
struct bfd_link_hash_entry *bh;
bfd_vma val;
/* BX PC does not need a veneer. */
if (reg == 15)
return;
globals = elf32_arm_hash_table (link_info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
/* Check if this veneer has already been allocated. */
if (globals->bx_glue_offset[reg])
return;
s = bfd_get_section_by_name
(globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
BFD_ASSERT (s != NULL);
/* Add symbol for veneer. */
tmp_name = (char *)
bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
BFD_ASSERT (tmp_name);
sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
myh = elf_link_hash_lookup
(&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
BFD_ASSERT (myh == NULL);
bh = NULL;
val = globals->bx_glue_size;
_bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
NULL, TRUE, FALSE, &bh);
myh = (struct elf_link_hash_entry *) bh;
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
myh->forced_local = 1;
s->size += ARM_BX_VENEER_SIZE;
globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
globals->bx_glue_size += ARM_BX_VENEER_SIZE;
}
/* Add an entry to the code/data map for section SEC. */
static void
elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
{
struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
unsigned int newidx;
if (sec_data->map == NULL)
{
sec_data->map = (elf32_arm_section_map *)
bfd_malloc (sizeof (elf32_arm_section_map));
sec_data->mapcount = 0;
sec_data->mapsize = 1;
}
newidx = sec_data->mapcount++;
if (sec_data->mapcount > sec_data->mapsize)
{
sec_data->mapsize *= 2;
sec_data->map = (elf32_arm_section_map *)
bfd_realloc_or_free (sec_data->map, sec_data->mapsize
* sizeof (elf32_arm_section_map));
}
if (sec_data->map)
{
sec_data->map[newidx].vma = vma;
sec_data->map[newidx].type = type;
}
}
/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
veneers are handled for now. */
static bfd_vma
record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
elf32_vfp11_erratum_list *branch,
bfd *branch_bfd,
asection *branch_sec,
unsigned int offset)
{
asection *s;
struct elf32_arm_link_hash_table *hash_table;
char *tmp_name;
struct elf_link_hash_entry *myh;
struct bfd_link_hash_entry *bh;
bfd_vma val;
struct _arm_elf_section_data *sec_data;
elf32_vfp11_erratum_list *newerr;
hash_table = elf32_arm_hash_table (link_info);
BFD_ASSERT (hash_table != NULL);
BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
s = bfd_get_section_by_name
(hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
sec_data = elf32_arm_section_data (s);
BFD_ASSERT (s != NULL);
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen
(VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
BFD_ASSERT (tmp_name);
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
hash_table->num_vfp11_fixes);
myh = elf_link_hash_lookup
(&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
BFD_ASSERT (myh == NULL);
bh = NULL;
val = hash_table->vfp11_erratum_glue_size;
_bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
NULL, TRUE, FALSE, &bh);
myh = (struct elf_link_hash_entry *) bh;
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
myh->forced_local = 1;
/* Link veneer back to calling location. */
sec_data->erratumcount += 1;
newerr = (elf32_vfp11_erratum_list *)
bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
newerr->type = VFP11_ERRATUM_ARM_VENEER;
newerr->vma = -1;
newerr->u.v.branch = branch;
newerr->u.v.id = hash_table->num_vfp11_fixes;
branch->u.b.veneer = newerr;
newerr->next = sec_data->erratumlist;
sec_data->erratumlist = newerr;
/* A symbol for the return from the veneer. */
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
hash_table->num_vfp11_fixes);
myh = elf_link_hash_lookup
(&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
if (myh != NULL)
abort ();
bh = NULL;
val = offset + 4;
_bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
branch_sec, val, NULL, TRUE, FALSE, &bh);
myh = (struct elf_link_hash_entry *) bh;
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
myh->forced_local = 1;
free (tmp_name);
/* Generate a mapping symbol for the veneer section, and explicitly add an
entry for that symbol to the code/data map for the section. */
if (hash_table->vfp11_erratum_glue_size == 0)
{
bh = NULL;
/* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
ever requires this erratum fix. */
_bfd_generic_link_add_one_symbol (link_info,
hash_table->bfd_of_glue_owner, "$a",
BSF_LOCAL, s, 0, NULL,
TRUE, FALSE, &bh);
myh = (struct elf_link_hash_entry *) bh;
myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
myh->forced_local = 1;
/* The elf32_arm_init_maps function only cares about symbols from input
BFDs. We must make a note of this generated mapping symbol
ourselves so that code byteswapping works properly in
elf32_arm_write_section. */
elf32_arm_section_map_add (s, 'a', 0);
}
s->size += VFP11_ERRATUM_VENEER_SIZE;
hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
hash_table->num_vfp11_fixes++;
/* The offset of the veneer. */
return val;
}
#define ARM_GLUE_SECTION_FLAGS \
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \
| SEC_READONLY | SEC_LINKER_CREATED)
/* Create a fake section for use by the ARM backend of the linker. */
static bfd_boolean
arm_make_glue_section (bfd * abfd, const char * name)
{
asection * sec;
sec = bfd_get_section_by_name (abfd, name);
if (sec != NULL)
/* Already made. */
return TRUE;
sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
if (sec == NULL
|| !bfd_set_section_alignment (abfd, sec, 2))
return FALSE;
/* Set the gc mark to prevent the section from being removed by garbage
collection, despite the fact that no relocs refer to this section. */
sec->gc_mark = 1;
return TRUE;
}
/* Add the glue sections to ABFD. This function is called from the
linker scripts in ld/emultempl/{armelf}.em. */
bfd_boolean
bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
struct bfd_link_info *info)
{
/* If we are only performing a partial
link do not bother adding the glue. */
if (info->relocatable)
return TRUE;
return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
&& arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
&& arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
&& arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
}
/* Select a BFD to be used to hold the sections used by the glue code.
This function is called from the linker scripts in ld/emultempl/
{armelf/pe}.em. */
bfd_boolean
bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
{
struct elf32_arm_link_hash_table *globals;
/* If we are only performing a partial link
do not bother getting a bfd to hold the glue. */
if (info->relocatable)
return TRUE;
/* Make sure we don't attach the glue sections to a dynamic object. */
BFD_ASSERT (!(abfd->flags & DYNAMIC));
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
if (globals->bfd_of_glue_owner != NULL)
return TRUE;
/* Save the bfd for later use. */
globals->bfd_of_glue_owner = abfd;
return TRUE;
}
static void
check_use_blx (struct elf32_arm_link_hash_table *globals)
{
if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
Tag_CPU_arch) > 2)
globals->use_blx = 1;
}
bfd_boolean
bfd_elf32_arm_process_before_allocation (bfd *abfd,
struct bfd_link_info *link_info)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *internal_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
bfd_byte *contents = NULL;
asection *sec;
struct elf32_arm_link_hash_table *globals;
/* If we are only performing a partial link do not bother
to construct any glue. */
if (link_info->relocatable)
return TRUE;
/* Here we have a bfd that is to be included on the link. We have a
hook to do reloc rummaging, before section sizes are nailed down. */
globals = elf32_arm_hash_table (link_info);
BFD_ASSERT (globals != NULL);
check_use_blx (globals);
if (globals->byteswap_code && !bfd_big_endian (abfd))
{
_bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
abfd);
return FALSE;
}
/* PR 5398: If we have not decided to include any loadable sections in
the output then we will not have a glue owner bfd. This is OK, it
just means that there is nothing else for us to do here. */
if (globals->bfd_of_glue_owner == NULL)
return TRUE;
/* Rummage around all the relocs and map the glue vectors. */
sec = abfd->sections;
if (sec == NULL)
return TRUE;
for (; sec != NULL; sec = sec->next)
{
if (sec->reloc_count == 0)
continue;
if ((sec->flags & SEC_EXCLUDE) != 0)
continue;
symtab_hdr = & elf_symtab_hdr (abfd);
/* Load the relocs. */
internal_relocs
= _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
if (internal_relocs == NULL)
goto error_return;
irelend = internal_relocs + sec->reloc_count;
for (irel = internal_relocs; irel < irelend; irel++)
{
long r_type;
unsigned long r_index;
struct elf_link_hash_entry *h;
r_type = ELF32_R_TYPE (irel->r_info);
r_index = ELF32_R_SYM (irel->r_info);
/* These are the only relocation types we care about. */
if ( r_type != R_ARM_PC24
&& (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
continue;
/* Get the section contents if we haven't done so already. */
if (contents == NULL)
{
/* Get cached copy if it exists. */
if (elf_section_data (sec)->this_hdr.contents != NULL)
contents = elf_section_data (sec)->this_hdr.contents;
else
{
/* Go get them off disk. */
if (! bfd_malloc_and_get_section (abfd, sec, &contents))
goto error_return;
}
}
if (r_type == R_ARM_V4BX)
{
int reg;
reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
record_arm_bx_glue (link_info, reg);
continue;
}
/* If the relocation is not against a symbol it cannot concern us. */
h = NULL;
/* We don't care about local symbols. */
if (r_index < symtab_hdr->sh_info)
continue;
/* This is an external symbol. */
r_index -= symtab_hdr->sh_info;
h = (struct elf_link_hash_entry *)
elf_sym_hashes (abfd)[r_index];
/* If the relocation is against a static symbol it must be within
the current section and so cannot be a cross ARM/Thumb relocation. */
if (h == NULL)
continue;
/* If the call will go through a PLT entry then we do not need
glue. */
if (globals->root.splt != NULL && h->plt.offset != (bfd_vma) -1)
continue;
switch (r_type)
{
case R_ARM_PC24:
/* This one is a call from arm code. We need to look up
the target of the call. If it is a thumb target, we
insert glue. */
if (h->target_internal == ST_BRANCH_TO_THUMB)
record_arm_to_thumb_glue (link_info, h);
break;
default:
abort ();
}
}
if (contents != NULL
&& elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
contents = NULL;
if (internal_relocs != NULL
&& elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
internal_relocs = NULL;
}
return TRUE;
error_return:
if (contents != NULL
&& elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
if (internal_relocs != NULL
&& elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
return FALSE;
}
#endif
/* Initialise maps of ARM/Thumb/data for input BFDs. */
void
bfd_elf32_arm_init_maps (bfd *abfd)
{
Elf_Internal_Sym *isymbuf;
Elf_Internal_Shdr *hdr;
unsigned int i, localsyms;
/* PR 7093: Make sure that we are dealing with an arm elf binary. */
if (! is_arm_elf (abfd))
return;
if ((abfd->flags & DYNAMIC) != 0)
return;
hdr = & elf_symtab_hdr (abfd);
localsyms = hdr->sh_info;
/* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
should contain the number of local symbols, which should come before any
global symbols. Mapping symbols are always local. */
isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
NULL);
/* No internal symbols read? Skip this BFD. */
if (isymbuf == NULL)
return;
for (i = 0; i < localsyms; i++)
{
Elf_Internal_Sym *isym = &isymbuf[i];
asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
const char *name;
if (sec != NULL
&& ELF_ST_BIND (isym->st_info) == STB_LOCAL)
{
name = bfd_elf_string_from_elf_section (abfd,
hdr->sh_link, isym->st_name);
if (bfd_is_arm_special_symbol_name (name,
BFD_ARM_SPECIAL_SYM_TYPE_MAP))
elf32_arm_section_map_add (sec, name[1], isym->st_value);
}
}
}
/* Auto-select enabling of Cortex-A8 erratum fix if the user didn't explicitly
say what they wanted. */
void
bfd_elf32_arm_set_cortex_a8_fix (bfd *obfd, struct bfd_link_info *link_info)
{
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
if (globals == NULL)
return;
if (globals->fix_cortex_a8 == -1)
{
/* Turn on Cortex-A8 erratum workaround for ARMv7-A. */
if (out_attr[Tag_CPU_arch].i == TAG_CPU_ARCH_V7
&& (out_attr[Tag_CPU_arch_profile].i == 'A'
|| out_attr[Tag_CPU_arch_profile].i == 0))
globals->fix_cortex_a8 = 1;
else
globals->fix_cortex_a8 = 0;
}
}
void
bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
{
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
if (globals == NULL)
return;
/* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
{
switch (globals->vfp11_fix)
{
case BFD_ARM_VFP11_FIX_DEFAULT:
case BFD_ARM_VFP11_FIX_NONE:
globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
break;
default:
/* Give a warning, but do as the user requests anyway. */
(*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
"workaround is not necessary for target architecture"), obfd);
}
}
else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
/* For earlier architectures, we might need the workaround, but do not
enable it by default. If users is running with broken hardware, they
must enable the erratum fix explicitly. */
globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
}
enum bfd_arm_vfp11_pipe
{
VFP11_FMAC,
VFP11_LS,
VFP11_DS,
VFP11_BAD
};
/* Return a VFP register number. This is encoded as RX:X for single-precision
registers, or X:RX for double-precision registers, where RX is the group of
four bits in the instruction encoding and X is the single extension bit.
RX and X fields are specified using their lowest (starting) bit. The return
value is:
0...31: single-precision registers s0...s31
32...63: double-precision registers d0...d31.
Although X should be zero for VFP11 (encoding d0...d15 only), we might
encounter VFP3 instructions, so we allow the full range for DP registers. */
static unsigned int
bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
unsigned int x)
{
if (is_double)
return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
else
return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
}
/* Set bits in *WMASK according to a register number REG as encoded by
bfd_arm_vfp11_regno(). Ignore d16-d31. */
static void
bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
{
if (reg < 32)
*wmask |= 1 << reg;
else if (reg < 48)
*wmask |= 3 << ((reg - 32) * 2);
}
/* Return TRUE if WMASK overwrites anything in REGS. */
static bfd_boolean
bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
{
int i;
for (i = 0; i < numregs; i++)
{
unsigned int reg = regs[i];
if (reg < 32 && (wmask & (1 << reg)) != 0)
return TRUE;
reg -= 32;
if (reg >= 16)
continue;
if ((wmask & (3 << (reg * 2))) != 0)
return TRUE;
}
return FALSE;
}
/* In this function, we're interested in two things: finding input registers
for VFP data-processing instructions, and finding the set of registers which
arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
hold the written set, so FLDM etc. are easy to deal with (we're only
interested in 32 SP registers or 16 dp registers, due to the VFP version
implemented by the chip in question). DP registers are marked by setting
both SP registers in the write mask). */
static enum bfd_arm_vfp11_pipe
bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
int *numregs)
{
enum bfd_arm_vfp11_pipe vpipe = VFP11_BAD;
bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
{
unsigned int pqrs;
unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
pqrs = ((insn & 0x00800000) >> 20)
| ((insn & 0x00300000) >> 19)
| ((insn & 0x00000040) >> 6);
switch (pqrs)
{
case 0: /* fmac[sd]. */
case 1: /* fnmac[sd]. */
case 2: /* fmsc[sd]. */
case 3: /* fnmsc[sd]. */
vpipe = VFP11_FMAC;
bfd_arm_vfp11_write_mask (destmask, fd);
regs[0] = fd;
regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
regs[2] = fm;
*numregs = 3;
break;
case 4: /* fmul[sd]. */
case 5: /* fnmul[sd]. */
case 6: /* fadd[sd]. */
case 7: /* fsub[sd]. */
vpipe = VFP11_FMAC;
goto vfp_binop;
case 8: /* fdiv[sd]. */
vpipe = VFP11_DS;
vfp_binop:
bfd_arm_vfp11_write_mask (destmask, fd);
regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
regs[1] = fm;
*numregs = 2;
break;
case 15: /* extended opcode. */
{
unsigned int extn = ((insn >> 15) & 0x1e)
| ((insn >> 7) & 1);
switch (extn)
{
case 0: /* fcpy[sd]. */
case 1: /* fabs[sd]. */
case 2: /* fneg[sd]. */
case 8: /* fcmp[sd]. */
case 9: /* fcmpe[sd]. */
case 10: /* fcmpz[sd]. */
case 11: /* fcmpez[sd]. */
case 16: /* fuito[sd]. */
case 17: /* fsito[sd]. */
case 24: /* ftoui[sd]. */
case 25: /* ftouiz[sd]. */
case 26: /* ftosi[sd]. */
case 27: /* ftosiz[sd]. */
/* These instructions will not bounce due to underflow. */
*numregs = 0;
vpipe = VFP11_FMAC;
break;
case 3: /* fsqrt[sd]. */
/* fsqrt cannot underflow, but it can (perhaps) overwrite
registers to cause the erratum in previous instructions. */
bfd_arm_vfp11_write_mask (destmask, fd);
vpipe = VFP11_DS;
break;
case 15: /* fcvt{ds,sd}. */
{
int rnum = 0;
bfd_arm_vfp11_write_mask (destmask, fd);
/* Only FCVTSD can underflow. */
if ((insn & 0x100) != 0)
regs[rnum++] = fm;
*numregs = rnum;
vpipe = VFP11_FMAC;
}
break;
default:
return VFP11_BAD;
}
}
break;
default:
return VFP11_BAD;
}
}
/* Two-register transfer. */
else if ((insn & 0x0fe00ed0) == 0x0c400a10)
{
unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
if ((insn & 0x100000) == 0)
{
if (is_double)
bfd_arm_vfp11_write_mask (destmask, fm);
else
{
bfd_arm_vfp11_write_mask (destmask, fm);
bfd_arm_vfp11_write_mask (destmask, fm + 1);
}
}
vpipe = VFP11_LS;
}
else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
{
int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
switch (puw)
{
case 0: /* Two-reg transfer. We should catch these above. */
abort ();
case 2: /* fldm[sdx]. */
case 3:
case 5:
{
unsigned int i, offset = insn & 0xff;
if (is_double)
offset >>= 1;
for (i = fd; i < fd + offset; i++)
bfd_arm_vfp11_write_mask (destmask, i);
}
break;
case 4: /* fld[sd]. */
case 6:
bfd_arm_vfp11_write_mask (destmask, fd);
break;
default:
return VFP11_BAD;
}
vpipe = VFP11_LS;
}
/* Single-register transfer. Note L==0. */
else if ((insn & 0x0f100e10) == 0x0e000a10)
{
unsigned int opcode = (insn >> 21) & 7;
unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
switch (opcode)
{
case 0: /* fmsr/fmdlr. */
case 1: /* fmdhr. */
/* Mark fmdhr and fmdlr as writing to the whole of the DP
destination register. I don't know if this is exactly right,
but it is the conservative choice. */
bfd_arm_vfp11_write_mask (destmask, fn);
break;
case 7: /* fmxr. */
break;
}
vpipe = VFP11_LS;
}
return vpipe;
}
static int elf32_arm_compare_mapping (const void * a, const void * b);
/* Look for potentially-troublesome code sequences which might trigger the
VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
(available from ARM) for details of the erratum. A short version is
described in ld.texinfo. */
bfd_boolean
bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
{
asection *sec;
bfd_byte *contents = NULL;
int state = 0;
int regs[3], numregs = 0;
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
if (globals == NULL)
return FALSE;
/* We use a simple FSM to match troublesome VFP11 instruction sequences.
The states transition as follows:
0 -> 1 (vector) or 0 -> 2 (scalar)
A VFP FMAC-pipeline instruction has been seen. Fill
regs[0]..regs[numregs-1] with its input operands. Remember this
instruction in 'first_fmac'.
1 -> 2
Any instruction, except for a VFP instruction which overwrites
regs[*].
1 -> 3 [ -> 0 ] or
2 -> 3 [ -> 0 ]
A VFP instruction has been seen which overwrites any of regs[*].
We must make a veneer! Reset state to 0 before examining next
instruction.
2 -> 0
If we fail to match anything in state 2, reset to state 0 and reset
the instruction pointer to the instruction after 'first_fmac'.
If the VFP11 vector mode is in use, there must be at least two unrelated
instructions between anti-dependent VFP11 instructions to properly avoid
triggering the erratum, hence the use of the extra state 1. */
/* If we are only performing a partial link do not bother
to construct any glue. */
if (link_info->relocatable)
return TRUE;
/* Skip if this bfd does not correspond to an ELF image. */
if (! is_arm_elf (abfd))
return TRUE;
/* We should have chosen a fix type by the time we get here. */
BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
return TRUE;
/* Skip this BFD if it corresponds to an executable or dynamic object. */
if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
return TRUE;
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
struct _arm_elf_section_data *sec_data;
/* If we don't have executable progbits, we're not interested in this
section. Also skip if section is to be excluded. */
if (elf_section_type (sec) != SHT_PROGBITS
|| (elf_section_flags (sec) & SHF_EXECINSTR) == 0
|| (sec->flags & SEC_EXCLUDE) != 0
|| sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
|| sec->output_section == bfd_abs_section_ptr
|| strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
continue;
sec_data = elf32_arm_section_data (sec);
if (sec_data->mapcount == 0)
continue;
if (elf_section_data (sec)->this_hdr.contents != NULL)
contents = elf_section_data (sec)->this_hdr.contents;
else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
goto error_return;
qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
elf32_arm_compare_mapping);
for (span = 0; span < sec_data->mapcount; span++)
{
unsigned int span_start = sec_data->map[span].vma;
unsigned int span_end = (span == sec_data->mapcount - 1)
? sec->size : sec_data->map[span + 1].vma;
char span_type = sec_data->map[span].type;
/* FIXME: Only ARM mode is supported at present. We may need to
support Thumb-2 mode also at some point. */
if (span_type != 'a')
continue;
for (i = span_start; i < span_end;)
{
unsigned int next_i = i + 4;
unsigned int insn = bfd_big_endian (abfd)
? (contents[i] << 24)
| (contents[i + 1] << 16)
| (contents[i + 2] << 8)
| contents[i + 3]
: (contents[i + 3] << 24)
| (contents[i + 2] << 16)
| (contents[i + 1] << 8)
| contents[i];
unsigned int writemask = 0;
enum bfd_arm_vfp11_pipe vpipe;
switch (state)
{
case 0:
vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
&numregs);
/* I'm assuming the VFP11 erratum can trigger with denorm
operands on either the FMAC or the DS pipeline. This might
lead to slightly overenthusiastic veneer insertion. */
if (vpipe == VFP11_FMAC || vpipe == VFP11_DS)
{
state = use_vector ? 1 : 2;
first_fmac = i;
veneer_of_insn = insn;
}
break;
case 1:
{
int other_regs[3], other_numregs;
vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
other_regs,
&other_numregs);
if (vpipe != VFP11_BAD
&& bfd_arm_vfp11_antidependency (writemask, regs,
numregs))
state = 3;
else
state = 2;
}
break;
case 2:
{
int other_regs[3], other_numregs;
vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
other_regs,
&other_numregs);
if (vpipe != VFP11_BAD
&& bfd_arm_vfp11_antidependency (writemask, regs,
numregs))
state = 3;
else
{
state = 0;
next_i = first_fmac + 4;
}
}
break;
case 3:
abort (); /* Should be unreachable. */
}
if (state == 3)
{
elf32_vfp11_erratum_list *newerr =(elf32_vfp11_erratum_list *)
bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
elf32_arm_section_data (sec)->erratumcount += 1;
newerr->u.b.vfp_insn = veneer_of_insn;
switch (span_type)
{
case 'a':
newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
break;
default:
abort ();
}
record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
first_fmac);
newerr->vma = -1;
newerr->next = sec_data->erratumlist;
sec_data->erratumlist = newerr;
state = 0;
}
i = next_i;
}
}
if (contents != NULL
&& elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
contents = NULL;
}
return TRUE;
error_return:
if (contents != NULL
&& elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
return FALSE;
}
/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
after sections have been laid out, using specially-named symbols. */
void
bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
struct bfd_link_info *link_info)
{
asection *sec;
struct elf32_arm_link_hash_table *globals;
char *tmp_name;
if (link_info->relocatable)
return;
/* Skip if this bfd does not correspond to an ELF image. */
if (! is_arm_elf (abfd))
return;
globals = elf32_arm_hash_table (link_info);
if (globals == NULL)
return;
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen
(VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
for (; errnode != NULL; errnode = errnode->next)
{
struct elf_link_hash_entry *myh;
bfd_vma vma;
switch (errnode->type)
{
case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
/* Find veneer symbol. */
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
errnode->u.b.veneer->u.v.id);
myh = elf_link_hash_lookup
(&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
if (myh == NULL)
(*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
"`%s'"), abfd, tmp_name);
vma = myh->root.u.def.section->output_section->vma
+ myh->root.u.def.section->output_offset
+ myh->root.u.def.value;
errnode->u.b.veneer->vma = vma;
break;
case VFP11_ERRATUM_ARM_VENEER:
case VFP11_ERRATUM_THUMB_VENEER:
/* Find return location. */
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
errnode->u.v.id);
myh = elf_link_hash_lookup
(&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
if (myh == NULL)
(*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
"`%s'"), abfd, tmp_name);
vma = myh->root.u.def.section->output_section->vma
+ myh->root.u.def.section->output_offset
+ myh->root.u.def.value;
errnode->u.v.branch->vma = vma;
break;
default:
abort ();
}
}
}
free (tmp_name);
}
/* Set target relocation values needed during linking. */
void
bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
struct bfd_link_info *link_info,
int target1_is_rel,
char * target2_type,
int fix_v4bx,
int use_blx,
bfd_arm_vfp11_fix vfp11_fix,
int no_enum_warn, int no_wchar_warn,
int pic_veneer, int fix_cortex_a8)
{
struct elf32_arm_link_hash_table *globals;
globals = elf32_arm_hash_table (link_info);
if (globals == NULL)
return;
globals->target1_is_rel = target1_is_rel;
if (strcmp (target2_type, "rel") == 0)
globals->target2_reloc = R_ARM_REL32;
else if (strcmp (target2_type, "abs") == 0)
globals->target2_reloc = R_ARM_ABS32;
else if (strcmp (target2_type, "got-rel") == 0)
globals->target2_reloc = R_ARM_GOT_PREL;
else
{
_bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
target2_type);
}
globals->fix_v4bx = fix_v4bx;
globals->use_blx |= use_blx;
globals->vfp11_fix = vfp11_fix;
globals->pic_veneer = pic_veneer;
globals->fix_cortex_a8 = fix_cortex_a8;
BFD_ASSERT (is_arm_elf (output_bfd));
elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
}
/* Replace the target offset of a Thumb bl or b.w instruction. */
static void
insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
{
bfd_vma upper;
bfd_vma lower;
int reloc_sign;
BFD_ASSERT ((offset & 1) == 0);
upper = bfd_get_16 (abfd, insn);
lower = bfd_get_16 (abfd, insn + 2);
reloc_sign = (offset < 0) ? 1 : 0;
upper = (upper & ~(bfd_vma) 0x7ff)
| ((offset >> 12) & 0x3ff)
| (reloc_sign << 10);
lower = (lower & ~(bfd_vma) 0x2fff)
| (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
| (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
| ((offset >> 1) & 0x7ff);
bfd_put_16 (abfd, upper, insn);
bfd_put_16 (abfd, lower, insn + 2);
}
/* Thumb code calling an ARM function. */
static int
elf32_thumb_to_arm_stub (struct bfd_link_info * info,
const char * name,
bfd * input_bfd,
bfd * output_bfd,
asection * input_section,
bfd_byte * hit_data,
asection * sym_sec,
bfd_vma offset,
bfd_signed_vma addend,
bfd_vma val,
char **error_message)
{
asection * s = 0;
bfd_vma my_offset;
long int ret_offset;
struct elf_link_hash_entry * myh;
struct elf32_arm_link_hash_table * globals;
myh = find_thumb_glue (info, name, error_message);
if (myh == NULL)
return FALSE;
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
my_offset = myh->root.u.def.value;
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
THUMB2ARM_GLUE_SECTION_NAME);
BFD_ASSERT (s != NULL);
BFD_ASSERT (s->contents != NULL);
BFD_ASSERT (s->output_section != NULL);
if ((my_offset & 0x01) == 0x01)
{
if (sym_sec != NULL
&& sym_sec->owner != NULL
&& !INTERWORK_FLAG (sym_sec->owner))
{
(*_bfd_error_handler)
(_("%B(%s): warning: interworking not enabled.\n"
" first occurrence: %B: thumb call to arm"),
sym_sec->owner, input_bfd, name);
return FALSE;
}
--my_offset;
myh->root.u.def.value = my_offset;
put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
s->contents + my_offset);
put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
s->contents + my_offset + 2);
ret_offset =
/* Address of destination of the stub. */
((bfd_signed_vma) val)
- ((bfd_signed_vma)
/* Offset from the start of the current section
to the start of the stubs. */
(s->output_offset
/* Offset of the start of this stub from the start of the stubs. */
+ my_offset
/* Address of the start of the current section. */
+ s->output_section->vma)
/* The branch instruction is 4 bytes into the stub. */
+ 4
/* ARM branches work from the pc of the instruction + 8. */
+ 8);
put_arm_insn (globals, output_bfd,
(bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
s->contents + my_offset + 4);
}
BFD_ASSERT (my_offset <= globals->thumb_glue_size);
/* Now go back and fix up the original BL insn to point to here. */
ret_offset =
/* Address of where the stub is located. */
(s->output_section->vma + s->output_offset + my_offset)
/* Address of where the BL is located. */
- (input_section->output_section->vma + input_section->output_offset
+ offset)
/* Addend in the relocation. */
- addend
/* Biassing for PC-relative addressing. */
- 8;
insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
return TRUE;
}
/* Populate an Arm to Thumb stub. Returns the stub symbol. */
static struct elf_link_hash_entry *
elf32_arm_create_thumb_stub (struct bfd_link_info * info,
const char * name,
bfd * input_bfd,
bfd * output_bfd,
asection * sym_sec,
bfd_vma val,
asection * s,
char ** error_message)
{
bfd_vma my_offset;
long int ret_offset;
struct elf_link_hash_entry * myh;
struct elf32_arm_link_hash_table * globals;
myh = find_arm_glue (info, name, error_message);
if (myh == NULL)
return NULL;
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
my_offset = myh->root.u.def.value;
if ((my_offset & 0x01) == 0x01)
{
if (sym_sec != NULL
&& sym_sec->owner != NULL
&& !INTERWORK_FLAG (sym_sec->owner))
{
(*_bfd_error_handler)
(_("%B(%s): warning: interworking not enabled.\n"
" first occurrence: %B: arm call to thumb"),
sym_sec->owner, input_bfd, name);
}
--my_offset;
myh->root.u.def.value = my_offset;
if (info->shared || globals->root.is_relocatable_executable
|| globals->pic_veneer)
{
/* For relocatable objects we can't use absolute addresses,
so construct the address from a relative offset. */
/* TODO: If the offset is small it's probably worth
constructing the address with adds. */
put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
s->contents + my_offset);
put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
s->contents + my_offset + 4);
put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
s->contents + my_offset + 8);
/* Adjust the offset by 4 for the position of the add,
and 8 for the pipeline offset. */
ret_offset = (val - (s->output_offset
+ s->output_section->vma
+ my_offset + 12))
| 1;
bfd_put_32 (output_bfd, ret_offset,
s->contents + my_offset + 12);
}
else if (globals->use_blx)
{
put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
s->contents + my_offset);
/* It's a thumb address. Add the low order bit. */
bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
s->contents + my_offset + 4);
}
else
{
put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
s->contents + my_offset);
put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
s->contents + my_offset + 4);
/* It's a thumb address. Add the low order bit. */
bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
s->contents + my_offset + 8);
my_offset += 12;
}
}
BFD_ASSERT (my_offset <= globals->arm_glue_size);
return myh;
}
/* Arm code calling a Thumb function. */
static int
elf32_arm_to_thumb_stub (struct bfd_link_info * info,
const char * name,
bfd * input_bfd,
bfd * output_bfd,
asection * input_section,
bfd_byte * hit_data,
asection * sym_sec,
bfd_vma offset,
bfd_signed_vma addend,
bfd_vma val,
char **error_message)
{
unsigned long int tmp;
bfd_vma my_offset;
asection * s;
long int ret_offset;
struct elf_link_hash_entry * myh;
struct elf32_arm_link_hash_table * globals;
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
ARM2THUMB_GLUE_SECTION_NAME);
BFD_ASSERT (s != NULL);
BFD_ASSERT (s->contents != NULL);
BFD_ASSERT (s->output_section != NULL);
myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
sym_sec, val, s, error_message);
if (!myh)
return FALSE;
my_offset = myh->root.u.def.value;
tmp = bfd_get_32 (input_bfd, hit_data);
tmp = tmp & 0xFF000000;
/* Somehow these are both 4 too far, so subtract 8. */
ret_offset = (s->output_offset
+ my_offset
+ s->output_section->vma
- (input_section->output_offset
+ input_section->output_section->vma
+ offset + addend)
- 8);
tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
return TRUE;
}
/* Populate Arm stub for an exported Thumb function. */
static bfd_boolean
elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
{
struct bfd_link_info * info = (struct bfd_link_info *) inf;
asection * s;
struct elf_link_hash_entry * myh;
struct elf32_arm_link_hash_entry *eh;
struct elf32_arm_link_hash_table * globals;
asection *sec;
bfd_vma val;
char *error_message;
eh = elf32_arm_hash_entry (h);
/* Allocate stubs for exported Thumb functions on v4t. */
if (eh->export_glue == NULL)
return TRUE;
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
ARM2THUMB_GLUE_SECTION_NAME);
BFD_ASSERT (s != NULL);
BFD_ASSERT (s->contents != NULL);
BFD_ASSERT (s->output_section != NULL);
sec = eh->export_glue->root.u.def.section;
BFD_ASSERT (sec->output_section != NULL);
val = eh->export_glue->root.u.def.value + sec->output_offset
+ sec->output_section->vma;
myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
h->root.u.def.section->owner,
globals->obfd, sec, val, s,
&error_message);
BFD_ASSERT (myh);
return TRUE;
}
/* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
static bfd_vma
elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
{
bfd_byte *p;
bfd_vma glue_addr;
asection *s;
struct elf32_arm_link_hash_table *globals;
globals = elf32_arm_hash_table (info);
BFD_ASSERT (globals != NULL);
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
ARM_BX_GLUE_SECTION_NAME);
BFD_ASSERT (s != NULL);
BFD_ASSERT (s->contents != NULL);
BFD_ASSERT (s->output_section != NULL);
BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
if ((globals->bx_glue_offset[reg] & 1) == 0)
{
p = s->contents + glue_addr;
bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
globals->bx_glue_offset[reg] |= 1;
}
return glue_addr + s->output_section->vma + s->output_offset;
}
/* Generate Arm stubs for exported Thumb symbols. */
static void
elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info)
{
struct elf32_arm_link_hash_table * globals;
if (link_info == NULL)
/* Ignore this if we are not called by the ELF backend linker. */
return;
globals = elf32_arm_hash_table (link_info);
if (globals == NULL)
return;
/* If blx is available then exported Thumb symbols are OK and there is
nothing to do. */
if (globals->use_blx)
return;
elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
link_info);
}
/* Reserve space for COUNT dynamic relocations in relocation selection
SRELOC. */
static void
elf32_arm_allocate_dynrelocs (struct bfd_link_info *info, asection *sreloc,
bfd_size_type count)
{
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
BFD_ASSERT (htab->root.dynamic_sections_created);
if (sreloc == NULL)
abort ();
sreloc->size += RELOC_SIZE (htab) * count;
}
/* Reserve space for COUNT R_ARM_IRELATIVE relocations. If the link is
dynamic, the relocations should go in SRELOC, otherwise they should
go in the special .rel.iplt section. */
static void
elf32_arm_allocate_irelocs (struct bfd_link_info *info, asection *sreloc,
bfd_size_type count)
{
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (!htab->root.dynamic_sections_created)
htab->root.irelplt->size += RELOC_SIZE (htab) * count;
else
{
BFD_ASSERT (sreloc != NULL);
sreloc->size += RELOC_SIZE (htab) * count;
}
}
/* Add relocation REL to the end of relocation section SRELOC. */
static void
elf32_arm_add_dynreloc (bfd *output_bfd, struct bfd_link_info *info,
asection *sreloc, Elf_Internal_Rela *rel)
{
bfd_byte *loc;
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (!htab->root.dynamic_sections_created
&& ELF32_R_TYPE (rel->r_info) == R_ARM_IRELATIVE)
sreloc = htab->root.irelplt;
if (sreloc == NULL)
abort ();
loc = sreloc->contents;
loc += sreloc->reloc_count++ * RELOC_SIZE (htab);
if (sreloc->reloc_count * RELOC_SIZE (htab) > sreloc->size)
abort ();
SWAP_RELOC_OUT (htab) (output_bfd, rel, loc);
}
/* Allocate room for a PLT entry described by ROOT_PLT and ARM_PLT.
IS_IPLT_ENTRY says whether the entry belongs to .iplt rather than
to .plt. */
static void
elf32_arm_allocate_plt_entry (struct bfd_link_info *info,
bfd_boolean is_iplt_entry,
union gotplt_union *root_plt,
struct arm_plt_info *arm_plt)
{
struct elf32_arm_link_hash_table *htab;
asection *splt;
asection *sgotplt;
htab = elf32_arm_hash_table (info);
if (is_iplt_entry)
{
splt = htab->root.iplt;
sgotplt = htab->root.igotplt;
/* Allocate room for an R_ARM_IRELATIVE relocation in .rel.iplt. */
elf32_arm_allocate_irelocs (info, htab->root.irelplt, 1);
}
else
{
splt = htab->root.splt;
sgotplt = htab->root.sgotplt;
/* Allocate room for an R_JUMP_SLOT relocation in .rel.plt. */
elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1);
/* If this is the first .plt entry, make room for the special
first entry. */
if (splt->size == 0)
splt->size += htab->plt_header_size;
}
/* Allocate the PLT entry itself, including any leading Thumb stub. */
if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt))
splt->size += PLT_THUMB_STUB_SIZE;
root_plt->offset = splt->size;
splt->size += htab->plt_entry_size;
if (!htab->symbian_p)
{
/* We also need to make an entry in the .got.plt section, which
will be placed in the .got section by the linker script. */
arm_plt->got_offset = sgotplt->size - 8 * htab->num_tls_desc;
sgotplt->size += 4;
}
}
/* Fill in a PLT entry and its associated GOT slot. If DYNINDX == -1,
the entry lives in .iplt and resolves to (*SYM_VALUE)().
Otherwise, DYNINDX is the index of the symbol in the dynamic
symbol table and SYM_VALUE is undefined.
ROOT_PLT points to the offset of the PLT entry from the start of its
section (.iplt or .plt). ARM_PLT points to the symbol's ARM-specific
bookkeeping information. */
static void
elf32_arm_populate_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
union gotplt_union *root_plt,
struct arm_plt_info *arm_plt,
int dynindx, bfd_vma sym_value)
{
struct elf32_arm_link_hash_table *htab;
asection *sgot;
asection *splt;
asection *srel;
bfd_byte *loc;
bfd_vma plt_index;
Elf_Internal_Rela rel;
bfd_vma plt_header_size;
bfd_vma got_header_size;
htab = elf32_arm_hash_table (info);
/* Pick the appropriate sections and sizes. */
if (dynindx == -1)
{
splt = htab->root.iplt;
sgot = htab->root.igotplt;
srel = htab->root.irelplt;
/* There are no reserved entries in .igot.plt, and no special
first entry in .iplt. */
got_header_size = 0;
plt_header_size = 0;
}
else
{
splt = htab->root.splt;
sgot = htab->root.sgotplt;
srel = htab->root.srelplt;
got_header_size = get_elf_backend_data (output_bfd)->got_header_size;
plt_header_size = htab->plt_header_size;
}
BFD_ASSERT (splt != NULL && srel != NULL);
/* Fill in the entry in the procedure linkage table. */
if (htab->symbian_p)
{
BFD_ASSERT (dynindx >= 0);
put_arm_insn (htab, output_bfd,
elf32_arm_symbian_plt_entry[0],
splt->contents + root_plt->offset);
bfd_put_32 (output_bfd,
elf32_arm_symbian_plt_entry[1],
splt->contents + root_plt->offset + 4);
/* Fill in the entry in the .rel.plt section. */
rel.r_offset = (splt->output_section->vma
+ splt->output_offset
+ root_plt->offset + 4);
rel.r_info = ELF32_R_INFO (dynindx, R_ARM_GLOB_DAT);
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
in all the symbols for which we are making plt entries. The
first entry in the procedure linkage table is reserved. */
plt_index = ((root_plt->offset - plt_header_size)
/ htab->plt_entry_size);
}
else
{
bfd_vma got_offset, got_address, plt_address;
bfd_vma got_displacement, initial_got_entry;
bfd_byte * ptr;
BFD_ASSERT (sgot != NULL);
/* Get the offset into the .(i)got.plt table of the entry that
corresponds to this function. */
got_offset = (arm_plt->got_offset & -2);
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
in all the symbols for which we are making plt entries.
After the reserved .got.plt entries, all symbols appear in
the same order as in .plt. */
plt_index = (got_offset - got_header_size) / 4;
/* Calculate the address of the GOT entry. */
got_address = (sgot->output_section->vma
+ sgot->output_offset
+ got_offset);
/* ...and the address of the PLT entry. */
plt_address = (splt->output_section->vma
+ splt->output_offset
+ root_plt->offset);
ptr = splt->contents + root_plt->offset;
if (htab->vxworks_p && info->shared)
{
unsigned int i;
bfd_vma val;
for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
{
val = elf32_arm_vxworks_shared_plt_entry[i];
if (i == 2)
val |= got_address - sgot->output_section->vma;
if (i == 5)
val |= plt_index * RELOC_SIZE (htab);
if (i == 2 || i == 5)
bfd_put_32 (output_bfd, val, ptr);
else
put_arm_insn (htab, output_bfd, val, ptr);
}
}
else if (htab->vxworks_p)
{
unsigned int i;
bfd_vma val;
for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
{
val = elf32_arm_vxworks_exec_plt_entry[i];
if (i == 2)
val |= got_address;
if (i == 4)
val |= 0xffffff & -((root_plt->offset + i * 4 + 8) >> 2);
if (i == 5)
val |= plt_index * RELOC_SIZE (htab);
if (i == 2 || i == 5)
bfd_put_32 (output_bfd, val, ptr);
else
put_arm_insn (htab, output_bfd, val, ptr);
}
loc = (htab->srelplt2->contents
+ (plt_index * 2 + 1) * RELOC_SIZE (htab));
/* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
referencing the GOT for this PLT entry. */
rel.r_offset = plt_address + 8;
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
rel.r_addend = got_offset;
SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
loc += RELOC_SIZE (htab);
/* Create the R_ARM_ABS32 relocation referencing the
beginning of the PLT for this GOT entry. */
rel.r_offset = got_address;
rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
rel.r_addend = 0;
SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
}
else
{
/* Calculate the displacement between the PLT slot and the
entry in the GOT. The eight-byte offset accounts for the
value produced by adding to pc in the first instruction
of the PLT stub. */
got_displacement = got_address - (plt_address + 8);
BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt))
{
put_thumb_insn (htab, output_bfd,
elf32_arm_plt_thumb_stub[0], ptr - 4);
put_thumb_insn (htab, output_bfd,
elf32_arm_plt_thumb_stub[1], ptr - 2);
}
put_arm_insn (htab, output_bfd,
elf32_arm_plt_entry[0]
| ((got_displacement & 0x0ff00000) >> 20),
ptr + 0);
put_arm_insn (htab, output_bfd,
elf32_arm_plt_entry[1]
| ((got_displacement & 0x000ff000) >> 12),
ptr+ 4);
put_arm_insn (htab, output_bfd,
elf32_arm_plt_entry[2]
| (got_displacement & 0x00000fff),
ptr + 8);
#ifdef FOUR_WORD_PLT
bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
#endif
}
/* Fill in the entry in the .rel(a).(i)plt section. */
rel.r_offset = got_address;
rel.r_addend = 0;
if (dynindx == -1)
{
/* .igot.plt entries use IRELATIVE relocations against SYM_VALUE.
The dynamic linker or static executable then calls SYM_VALUE
to determine the correct run-time value of the .igot.plt entry. */
rel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE);
initial_got_entry = sym_value;
}
else
{
rel.r_info = ELF32_R_INFO (dynindx, R_ARM_JUMP_SLOT);
initial_got_entry = (splt->output_section->vma
+ splt->output_offset);
}
/* Fill in the entry in the global offset table. */
bfd_put_32 (output_bfd, initial_got_entry,
sgot->contents + got_offset);
}
loc = srel->contents + plt_index * RELOC_SIZE (htab);
SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
}
/* Some relocations map to different relocations depending on the
target. Return the real relocation. */
static int
arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
int r_type)
{
switch (r_type)
{
case R_ARM_TARGET1:
if (globals->target1_is_rel)
return R_ARM_REL32;
else
return R_ARM_ABS32;
case R_ARM_TARGET2:
return globals->target2_reloc;
default:
return r_type;
}
}
/* Return the base VMA address which should be subtracted from real addresses
when resolving @dtpoff relocation.
This is PT_TLS segment p_vaddr. */
static bfd_vma
dtpoff_base (struct bfd_link_info *info)
{
/* If tls_sec is NULL, we should have signalled an error already. */
if (elf_hash_table (info)->tls_sec == NULL)
return 0;
return elf_hash_table (info)->tls_sec->vma;
}
/* Return the relocation value for @tpoff relocation
if STT_TLS virtual address is ADDRESS. */
static bfd_vma
tpoff (struct bfd_link_info *info, bfd_vma address)
{
struct elf_link_hash_table *htab = elf_hash_table (info);
bfd_vma base;
/* If tls_sec is NULL, we should have signalled an error already. */
if (htab->tls_sec == NULL)
return 0;
base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
return address - htab->tls_sec->vma + base;
}
/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
VALUE is the relocation value. */
static bfd_reloc_status_type
elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
{
if (value > 0xfff)
return bfd_reloc_overflow;
value |= bfd_get_32 (abfd, data) & 0xfffff000;
bfd_put_32 (abfd, value, data);
return bfd_reloc_ok;
}
/* Handle TLS relaxations. Relaxing is possible for symbols that use
R_ARM_GOTDESC, R_ARM_{,THM_}TLS_CALL or
R_ARM_{,THM_}TLS_DESCSEQ relocations, during a static link.
Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
is to then call final_link_relocate. Return other values in the
case of error.
FIXME:When --emit-relocs is in effect, we'll emit relocs describing
the pre-relaxed code. It would be nice if the relocs were updated
to match the optimization. */
static bfd_reloc_status_type
elf32_arm_tls_relax (struct elf32_arm_link_hash_table *globals,
bfd *input_bfd, asection *input_sec, bfd_byte *contents,
Elf_Internal_Rela *rel, unsigned long is_local)
{
unsigned long insn;
switch (ELF32_R_TYPE (rel->r_info))
{
default:
return bfd_reloc_notsupported;
case R_ARM_TLS_GOTDESC:
if (is_local)
insn = 0;
else
{
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
if (insn & 1)
insn -= 5; /* THUMB */
else
insn -= 8; /* ARM */
}
bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
return bfd_reloc_continue;
case R_ARM_THM_TLS_DESCSEQ:
/* Thumb insn. */
insn = bfd_get_16 (input_bfd, contents + rel->r_offset);
if ((insn & 0xff78) == 0x4478) /* add rx, pc */
{
if (is_local)
/* nop */
bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset);
}
else if ((insn & 0xffc0) == 0x6840) /* ldr rx,[ry,#4] */
{
if (is_local)
/* nop */
bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset);
else
/* ldr rx,[ry] */
bfd_put_16 (input_bfd, insn & 0xf83f, contents + rel->r_offset);
}
else if ((insn & 0xff87) == 0x4780) /* blx rx */
{
if (is_local)
/* nop */
bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset);
else
/* mov r0, rx */
bfd_put_16 (input_bfd, 0x4600 | (insn & 0x78),
contents + rel->r_offset);
}
else
{
if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800)
/* It's a 32 bit instruction, fetch the rest of it for
error generation. */
insn = (insn << 16)
| bfd_get_16 (input_bfd, contents + rel->r_offset + 2);
(*_bfd_error_handler)
(_("%B(%A+0x%lx):unexpected Thumb instruction '0x%x' in TLS trampoline"),
input_bfd, input_sec, (unsigned long)rel->r_offset, insn);
return bfd_reloc_notsupported;
}
break;
case R_ARM_TLS_DESCSEQ:
/* arm insn. */
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
if ((insn & 0xffff0ff0) == 0xe08f0000) /* add rx,pc,ry */
{
if (is_local)
/* mov rx, ry */
bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xffff),
contents + rel->r_offset);
}
else if ((insn & 0xfff00fff) == 0xe5900004) /* ldr rx,[ry,#4]*/
{
if (is_local)
/* nop */
bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset);
else
/* ldr rx,[ry] */
bfd_put_32 (input_bfd, insn & 0xfffff000,
contents + rel->r_offset);
}
else if ((insn & 0xfffffff0) == 0xe12fff30) /* blx rx */
{
if (is_local)
/* nop */
bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset);
else
/* mov r0, rx */
bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xf),
contents + rel->r_offset);
}
else
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx):unexpected ARM instruction '0x%x' in TLS trampoline"),
input_bfd, input_sec, (unsigned long)rel->r_offset, insn);
return bfd_reloc_notsupported;
}
break;
case R_ARM_TLS_CALL:
/* GD->IE relaxation, turn the instruction into 'nop' or
'ldr r0, [pc,r0]' */
insn = is_local ? 0xe1a00000 : 0xe79f0000;
bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
break;
case R_ARM_THM_TLS_CALL:
/* GD->IE relaxation */
if (!is_local)
/* add r0,pc; ldr r0, [r0] */
insn = 0x44786800;
else if (arch_has_thumb2_nop (globals))
/* nop.w */
insn = 0xf3af8000;
else
/* nop; nop */
insn = 0xbf00bf00;
bfd_put_16 (input_bfd, insn >> 16, contents + rel->r_offset);
bfd_put_16 (input_bfd, insn & 0xffff, contents + rel->r_offset + 2);
break;
}
return bfd_reloc_ok;
}
/* For a given value of n, calculate the value of G_n as required to
deal with group relocations. We return it in the form of an
encoded constant-and-rotation, together with the final residual. If n is
specified as less than zero, then final_residual is filled with the
input value and no further action is performed. */
static bfd_vma
calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
{
int current_n;
bfd_vma g_n;
bfd_vma encoded_g_n = 0;
bfd_vma residual = value; /* Also known as Y_n. */
for (current_n = 0; current_n <= n; current_n++)
{
int shift;
/* Calculate which part of the value to mask. */
if (residual == 0)
shift = 0;
else
{
int msb;
/* Determine the most significant bit in the residual and
align the resulting value to a 2-bit boundary. */
for (msb = 30; msb >= 0; msb -= 2)
if (residual & (3 << msb))
break;
/* The desired shift is now (msb - 6), or zero, whichever
is the greater. */
shift = msb - 6;
if (shift < 0)
shift = 0;
}
/* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
g_n = residual & (0xff << shift);
encoded_g_n = (g_n >> shift)
| ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
/* Calculate the residual for the next time around. */
residual &= ~g_n;
}
*final_residual = residual;
return encoded_g_n;
}
/* Given an ARM instruction, determine whether it is an ADD or a SUB.
Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
static int
identify_add_or_sub (bfd_vma insn)
{
int opcode = insn & 0x1e00000;
if (opcode == 1 << 23) /* ADD */
return 1;
if (opcode == 1 << 22) /* SUB */
return -1;
return 0;
}
/* Perform a relocation as part of a final link. */
static bfd_reloc_status_type
elf32_arm_final_link_relocate (reloc_howto_type * howto,
bfd * input_bfd,
bfd * output_bfd,
asection * input_section,
bfd_byte * contents,
Elf_Internal_Rela * rel,
bfd_vma value,
struct bfd_link_info * info,
asection * sym_sec,
const char * sym_name,
unsigned char st_type,
enum arm_st_branch_type branch_type,
struct elf_link_hash_entry * h,
bfd_boolean * unresolved_reloc_p,
char ** error_message)
{
unsigned long r_type = howto->type;
unsigned long r_symndx;
bfd_byte * hit_data = contents + rel->r_offset;
bfd_vma * local_got_offsets;
bfd_vma * local_tlsdesc_gotents;
asection * sgot;
asection * splt;
asection * sreloc = NULL;
asection * srelgot;
bfd_vma addend;
bfd_signed_vma signed_addend;
unsigned char dynreloc_st_type;
bfd_vma dynreloc_value;
struct elf32_arm_link_hash_table * globals;
struct elf32_arm_link_hash_entry *eh;
union gotplt_union *root_plt;
struct arm_plt_info *arm_plt;
bfd_vma plt_offset;
bfd_vma gotplt_offset;
bfd_boolean has_iplt_entry;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return bfd_reloc_notsupported;
BFD_ASSERT (is_arm_elf (input_bfd));
/* Some relocation types map to different relocations depending on the
target. We pick the right one here. */
r_type = arm_real_reloc_type (globals, r_type);
/* It is possible to have linker relaxations on some TLS access
models. Update our information here. */
r_type = elf32_arm_tls_transition (info, r_type, h);
if (r_type != howto->type)
howto = elf32_arm_howto_from_type (r_type);
/* If the start address has been set, then set the EF_ARM_HASENTRY
flag. Setting this more than once is redundant, but the cost is
not too high, and it keeps the code simple.
The test is done here, rather than somewhere else, because the
start address is only set just before the final link commences.
Note - if the user deliberately sets a start address of 0, the
flag will not be set. */
if (bfd_get_start_address (output_bfd) != 0)
elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
eh = (struct elf32_arm_link_hash_entry *) h;
sgot = globals->root.sgot;
local_got_offsets = elf_local_got_offsets (input_bfd);
local_tlsdesc_gotents = elf32_arm_local_tlsdesc_gotent (input_bfd);
if (globals->root.dynamic_sections_created)
srelgot = globals->root.srelgot;
else
srelgot = NULL;
r_symndx = ELF32_R_SYM (rel->r_info);
if (globals->use_rel)
{
addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
if (addend & ((howto->src_mask + 1) >> 1))
{
signed_addend = -1;
signed_addend &= ~ howto->src_mask;
signed_addend |= addend;
}
else
signed_addend = addend;
}
else
addend = signed_addend = rel->r_addend;
/* Record the symbol information that should be used in dynamic
relocations. */
dynreloc_st_type = st_type;
dynreloc_value = value;
if (branch_type == ST_BRANCH_TO_THUMB)
dynreloc_value |= 1;
/* Find out whether the symbol has a PLT. Set ST_VALUE, BRANCH_TYPE and
VALUE appropriately for relocations that we resolve at link time. */
has_iplt_entry = FALSE;
if (elf32_arm_get_plt_info (input_bfd, eh, r_symndx, &root_plt, &arm_plt)
&& root_plt->offset != (bfd_vma) -1)
{
plt_offset = root_plt->offset;
gotplt_offset = arm_plt->got_offset;
if (h == NULL || eh->is_iplt)
{
has_iplt_entry = TRUE;
splt = globals->root.iplt;
/* Populate .iplt entries here, because not all of them will
be seen by finish_dynamic_symbol. The lower bit is set if
we have already populated the entry. */
if (plt_offset & 1)
plt_offset--;
else
{
elf32_arm_populate_plt_entry (output_bfd, info, root_plt, arm_plt,
-1, dynreloc_value);
root_plt->offset |= 1;
}
/* Static relocations always resolve to the .iplt entry. */
st_type = STT_FUNC;
value = (splt->output_section->vma
+ splt->output_offset
+ plt_offset);
branch_type = ST_BRANCH_TO_ARM;
/* If there are non-call relocations that resolve to the .iplt
entry, then all dynamic ones must too. */
if (arm_plt->noncall_refcount != 0)
{
dynreloc_st_type = st_type;
dynreloc_value = value;
}
}
else
/* We populate the .plt entry in finish_dynamic_symbol. */
splt = globals->root.splt;
}
else
{
splt = NULL;
plt_offset = (bfd_vma) -1;
gotplt_offset = (bfd_vma) -1;
}
switch (r_type)
{
case R_ARM_NONE:
/* We don't need to find a value for this symbol. It's just a
marker. */
*unresolved_reloc_p = FALSE;
return bfd_reloc_ok;
case R_ARM_ABS12:
if (!globals->vxworks_p)
return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
case R_ARM_PC24:
case R_ARM_ABS32:
case R_ARM_ABS32_NOI:
case R_ARM_REL32:
case R_ARM_REL32_NOI:
case R_ARM_CALL:
case R_ARM_JUMP24:
case R_ARM_XPC25:
case R_ARM_PREL31:
case R_ARM_PLT32:
/* Handle relocations which should use the PLT entry. ABS32/REL32
will use the symbol's value, which may point to a PLT entry, but we
don't need to handle that here. If we created a PLT entry, all
branches in this object should go to it, except if the PLT is too
far away, in which case a long branch stub should be inserted. */
if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
&& r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI
&& r_type != R_ARM_CALL
&& r_type != R_ARM_JUMP24
&& r_type != R_ARM_PLT32)
&& plt_offset != (bfd_vma) -1)
{
/* If we've created a .plt section, and assigned a PLT entry
to this function, it must either be a STT_GNU_IFUNC reference
or not be known to bind locally. In other cases, we should
have cleared the PLT entry by now. */
BFD_ASSERT (has_iplt_entry || !SYMBOL_CALLS_LOCAL (info, h));
value = (splt->output_section->vma
+ splt->output_offset
+ plt_offset);
*unresolved_reloc_p = FALSE;
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
}
/* When generating a shared object or relocatable executable, these
relocations are copied into the output file to be resolved at
run time. */
if ((info->shared || globals->root.is_relocatable_executable)
&& (input_section->flags & SEC_ALLOC)
&& !(globals->vxworks_p
&& strcmp (input_section->output_section->name,
".tls_vars") == 0)
&& ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
|| !SYMBOL_CALLS_LOCAL (info, h))
&& (!strstr (input_section->name, STUB_SUFFIX))
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& r_type != R_ARM_PC24
&& r_type != R_ARM_CALL
&& r_type != R_ARM_JUMP24
&& r_type != R_ARM_PREL31
&& r_type != R_ARM_PLT32)
{
Elf_Internal_Rela outrel;
bfd_boolean skip, relocate;
*unresolved_reloc_p = FALSE;
if (sreloc == NULL && globals->root.dynamic_sections_created)
{
sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section,
! globals->use_rel);
if (sreloc == NULL)
return bfd_reloc_notsupported;
}
skip = FALSE;
relocate = FALSE;
outrel.r_addend = addend;
outrel.r_offset =
_bfd_elf_section_offset (output_bfd, info, input_section,
rel->r_offset);
if (outrel.r_offset == (bfd_vma) -1)
skip = TRUE;
else if (outrel.r_offset == (bfd_vma) -2)
skip = TRUE, relocate = TRUE;
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
if (skip)
memset (&outrel, 0, sizeof outrel);
else if (h != NULL
&& h->dynindx != -1
&& (!info->shared
|| !info->symbolic
|| !h->def_regular))
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
else
{
int symbol;
/* This symbol is local, or marked to become local. */
BFD_ASSERT (r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI);
if (globals->symbian_p)
{
asection *osec;
/* On Symbian OS, the data segment and text segement
can be relocated independently. Therefore, we
must indicate the segment to which this
relocation is relative. The BPABI allows us to
use any symbol in the right segment; we just use
the section symbol as it is convenient. (We
cannot use the symbol given by "h" directly as it
will not appear in the dynamic symbol table.)
Note that the dynamic linker ignores the section
symbol value, so we don't subtract osec->vma
from the emitted reloc addend. */
if (sym_sec)
osec = sym_sec->output_section;
else
osec = input_section->output_section;
symbol = elf_section_data (osec)->dynindx;
if (symbol == 0)
{
struct elf_link_hash_table *htab = elf_hash_table (info);
if ((osec->flags & SEC_READONLY) == 0
&& htab->data_index_section != NULL)
osec = htab->data_index_section;
else
osec = htab->text_index_section;
symbol = elf_section_data (osec)->dynindx;
}
BFD_ASSERT (symbol != 0);
}
else
/* On SVR4-ish systems, the dynamic loader cannot
relocate the text and data segments independently,
so the symbol does not matter. */
symbol = 0;
if (dynreloc_st_type == STT_GNU_IFUNC)
/* We have an STT_GNU_IFUNC symbol that doesn't resolve
to the .iplt entry. Instead, every non-call reference
must use an R_ARM_IRELATIVE relocation to obtain the
correct run-time address. */
outrel.r_info = ELF32_R_INFO (symbol, R_ARM_IRELATIVE);
else
outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
if (globals->use_rel)
relocate = TRUE;
else
outrel.r_addend += dynreloc_value;
}
elf32_arm_add_dynreloc (output_bfd, info, sreloc, &outrel);
/* If this reloc is against an external symbol, we do not want to
fiddle with the addend. Otherwise, we need to include the symbol
value so that it becomes an addend for the dynamic reloc. */
if (! relocate)
return bfd_reloc_ok;
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
dynreloc_value, (bfd_vma) 0);
}
else switch (r_type)
{
case R_ARM_ABS12:
return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
case R_ARM_XPC25: /* Arm BLX instruction. */
case R_ARM_CALL:
case R_ARM_JUMP24:
case R_ARM_PC24: /* Arm B/BL instruction. */
case R_ARM_PLT32:
{
struct elf32_arm_stub_hash_entry *stub_entry = NULL;
if (r_type == R_ARM_XPC25)
{
/* Check for Arm calling Arm function. */
/* FIXME: Should we translate the instruction into a BL
instruction instead ? */
if (branch_type != ST_BRANCH_TO_THUMB)
(*_bfd_error_handler)
(_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
input_bfd,
h ? h->root.root.string : "(local)");
}
else if (r_type == R_ARM_PC24)
{
/* Check for Arm calling Thumb function. */
if (branch_type == ST_BRANCH_TO_THUMB)
{
if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
output_bfd, input_section,
hit_data, sym_sec, rel->r_offset,
signed_addend, value,
error_message))
return bfd_reloc_ok;
else
return bfd_reloc_dangerous;
}
}
/* Check if a stub has to be inserted because the
destination is too far or we are changing mode. */
if ( r_type == R_ARM_CALL
|| r_type == R_ARM_JUMP24
|| r_type == R_ARM_PLT32)
{
enum elf32_arm_stub_type stub_type = arm_stub_none;
struct elf32_arm_link_hash_entry *hash;
hash = (struct elf32_arm_link_hash_entry *) h;
stub_type = arm_type_of_stub (info, input_section, rel,
st_type, &branch_type,
hash, value, sym_sec,
input_bfd, sym_name);
if (stub_type != arm_stub_none)
{
/* The target is out of reach, so redirect the
branch to the local stub for this function. */
stub_entry = elf32_arm_get_stub_entry (input_section,
sym_sec, h,
rel, globals,
stub_type);
if (stub_entry != NULL)
value = (stub_entry->stub_offset
+ stub_entry->stub_sec->output_offset
+ stub_entry->stub_sec->output_section->vma);
}
else
{
/* If the call goes through a PLT entry, make sure to
check distance to the right destination address. */
if (plt_offset != (bfd_vma) -1)
{
value = (splt->output_section->vma
+ splt->output_offset
+ plt_offset);
*unresolved_reloc_p = FALSE;
/* The PLT entry is in ARM mode, regardless of the
target function. */
branch_type = ST_BRANCH_TO_ARM;
}
}
}
/* The ARM ELF ABI says that this reloc is computed as: S - P + A
where:
S is the address of the symbol in the relocation.
P is address of the instruction being relocated.
A is the addend (extracted from the instruction) in bytes.
S is held in 'value'.
P is the base address of the section containing the
instruction plus the offset of the reloc into that
section, ie:
(input_section->output_section->vma +
input_section->output_offset +
rel->r_offset).
A is the addend, converted into bytes, ie:
(signed_addend * 4)
Note: None of these operations have knowledge of the pipeline
size of the processor, thus it is up to the assembler to
encode this information into the addend. */
value -= (input_section->output_section->vma
+ input_section->output_offset);
value -= rel->r_offset;
if (globals->use_rel)
value += (signed_addend << howto->size);
else
/* RELA addends do not have to be adjusted by howto->size. */
value += signed_addend;
signed_addend = value;
signed_addend >>= howto->rightshift;
/* A branch to an undefined weak symbol is turned into a jump to
the next instruction unless a PLT entry will be created.
Do the same for local undefined symbols (but not for STN_UNDEF).
The jump to the next instruction is optimized as a NOP depending
on the architecture. */
if (h ? (h->root.type == bfd_link_hash_undefweak
&& plt_offset == (bfd_vma) -1)
: r_symndx != STN_UNDEF && bfd_is_und_section (sym_sec))
{
value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000);
if (arch_has_arm_nop (globals))
value |= 0x0320f000;
else
value |= 0x01a00000; /* Using pre-UAL nop: mov r0, r0. */
}
else
{
/* Perform a signed range check. */
if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
|| signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
return bfd_reloc_overflow;
addend = (value & 2);
value = (signed_addend & howto->dst_mask)
| (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
if (r_type == R_ARM_CALL)
{
/* Set the H bit in the BLX instruction. */
if (branch_type == ST_BRANCH_TO_THUMB)
{
if (addend)
value |= (1 << 24);
else
value &= ~(bfd_vma)(1 << 24);
}
/* Select the correct instruction (BL or BLX). */
/* Only if we are not handling a BL to a stub. In this
case, mode switching is performed by the stub. */
if (branch_type == ST_BRANCH_TO_THUMB && !stub_entry)
value |= (1 << 28);
else if (stub_entry || branch_type != ST_BRANCH_UNKNOWN)
{
value &= ~(bfd_vma)(1 << 28);
value |= (1 << 24);
}
}
}
}
break;
case R_ARM_ABS32:
value += addend;
if (branch_type == ST_BRANCH_TO_THUMB)
value |= 1;
break;
case R_ARM_ABS32_NOI:
value += addend;
break;
case R_ARM_REL32:
value += addend;
if (branch_type == ST_BRANCH_TO_THUMB)
value |= 1;
value -= (input_section->output_section->vma
+ input_section->output_offset + rel->r_offset);
break;
case R_ARM_REL32_NOI:
value += addend;
value -= (input_section->output_section->vma
+ input_section->output_offset + rel->r_offset);
break;
case R_ARM_PREL31:
value -= (input_section->output_section->vma
+ input_section->output_offset + rel->r_offset);
value += signed_addend;
if (! h || h->root.type != bfd_link_hash_undefweak)
{
/* Check for overflow. */
if ((value ^ (value >> 1)) & (1 << 30))
return bfd_reloc_overflow;
}
value &= 0x7fffffff;
value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
if (branch_type == ST_BRANCH_TO_THUMB)
value |= 1;
break;
}
bfd_put_32 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_ARM_ABS8:
value += addend;
/* There is no way to tell whether the user intended to use a signed or
unsigned addend. When checking for overflow we accept either,
as specified by the AAELF. */
if ((long) value > 0xff || (long) value < -0x80)
return bfd_reloc_overflow;
bfd_put_8 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_ARM_ABS16:
value += addend;
/* See comment for R_ARM_ABS8. */
if ((long) value > 0xffff || (long) value < -0x8000)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_ARM_THM_ABS5:
/* Support ldr and str instructions for the thumb. */
if (globals->use_rel)
{
/* Need to refetch addend. */
addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
/* ??? Need to determine shift amount from operand size. */
addend >>= howto->rightshift;
}
value += addend;
/* ??? Isn't value unsigned? */
if ((long) value > 0x1f || (long) value < -0x10)
return bfd_reloc_overflow;
/* ??? Value needs to be properly shifted into place first. */
value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_ARM_THM_ALU_PREL_11_0:
/* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
{
bfd_vma insn;
bfd_signed_vma relocation;
insn = (bfd_get_16 (input_bfd, hit_data) << 16)
| bfd_get_16 (input_bfd, hit_data + 2);
if (globals->use_rel)
{
signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
| ((insn & (1 << 26)) >> 15);
if (insn & 0xf00000)
signed_addend = -signed_addend;
}
relocation = value + signed_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
value = abs (relocation);
if (value >= 0x1000)
return bfd_reloc_overflow;
insn = (insn & 0xfb0f8f00) | (value & 0xff)
| ((value & 0x700) << 4)
| ((value & 0x800) << 15);
if (relocation < 0)
insn |= 0xa00000;
bfd_put_16 (input_bfd, insn >> 16, hit_data);
bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
return bfd_reloc_ok;
}
case R_ARM_THM_PC8:
/* PR 10073: This reloc is not generated by the GNU toolchain,
but it is supported for compatibility with third party libraries
generated by other compilers, specifically the ARM/IAR. */
{
bfd_vma insn;
bfd_signed_vma relocation;
insn = bfd_get_16 (input_bfd, hit_data);
if (globals->use_rel)
addend = (insn & 0x00ff) << 2;
relocation = value + addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
value = abs (relocation);
/* We do not check for overflow of this reloc. Although strictly
speaking this is incorrect, it appears to be necessary in order
to work with IAR generated relocs. Since GCC and GAS do not
generate R_ARM_THM_PC8 relocs, the lack of a check should not be
a problem for them. */
value &= 0x3fc;
insn = (insn & 0xff00) | (value >> 2);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_ARM_THM_PC12:
/* Corresponds to: ldr.w reg, [pc, #offset]. */
{
bfd_vma insn;
bfd_signed_vma relocation;
insn = (bfd_get_16 (input_bfd, hit_data) << 16)
| bfd_get_16 (input_bfd, hit_data + 2);
if (globals->use_rel)
{
signed_addend = insn & 0xfff;
if (!(insn & (1 << 23)))
signed_addend = -signed_addend;
}
relocation = value + signed_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
value = abs (relocation);
if (value >= 0x1000)
return bfd_reloc_overflow;
insn = (insn & 0xff7ff000) | value;
if (relocation >= 0)
insn |= (1 << 23);
bfd_put_16 (input_bfd, insn >> 16, hit_data);
bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
return bfd_reloc_ok;
}
case R_ARM_THM_XPC22:
case R_ARM_THM_CALL:
case R_ARM_THM_JUMP24:
/* Thumb BL (branch long instruction). */
{
bfd_vma relocation;
bfd_vma reloc_sign;
bfd_boolean overflow = FALSE;
bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
bfd_signed_vma reloc_signed_max;
bfd_signed_vma reloc_signed_min;
bfd_vma check;
bfd_signed_vma signed_check;
int bitsize;
const int thumb2 = using_thumb2 (globals);
/* A branch to an undefined weak symbol is turned into a jump to
the next instruction unless a PLT entry will be created.
The jump to the next instruction is optimized as a NOP.W for
Thumb-2 enabled architectures. */
if (h && h->root.type == bfd_link_hash_undefweak
&& plt_offset == (bfd_vma) -1)
{
if (arch_has_thumb2_nop (globals))
{
bfd_put_16 (input_bfd, 0xf3af, hit_data);
bfd_put_16 (input_bfd, 0x8000, hit_data + 2);
}
else
{
bfd_put_16 (input_bfd, 0xe000, hit_data);
bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
}
return bfd_reloc_ok;
}
/* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
with Thumb-1) involving the J1 and J2 bits. */
if (globals->use_rel)
{
bfd_vma s = (upper_insn & (1 << 10)) >> 10;
bfd_vma upper = upper_insn & 0x3ff;
bfd_vma lower = lower_insn & 0x7ff;
bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
bfd_vma i1 = j1 ^ s ? 0 : 1;
bfd_vma i2 = j2 ^ s ? 0 : 1;
addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
/* Sign extend. */
addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
signed_addend = addend;
}
if (r_type == R_ARM_THM_XPC22)
{
/* Check for Thumb to Thumb call. */
/* FIXME: Should we translate the instruction into a BL
instruction instead ? */
if (branch_type == ST_BRANCH_TO_THUMB)
(*_bfd_error_handler)
(_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
input_bfd,
h ? h->root.root.string : "(local)");
}
else
{
/* If it is not a call to Thumb, assume call to Arm.
If it is a call relative to a section name, then it is not a
function call at all, but rather a long jump. Calls through
the PLT do not require stubs. */
if (branch_type == ST_BRANCH_TO_ARM && plt_offset == (bfd_vma) -1)
{
if (globals->use_blx && r_type == R_ARM_THM_CALL)
{
/* Convert BL to BLX. */
lower_insn = (lower_insn & ~0x1000) | 0x0800;
}
else if (( r_type != R_ARM_THM_CALL)
&& (r_type != R_ARM_THM_JUMP24))
{
if (elf32_thumb_to_arm_stub
(info, sym_name, input_bfd, output_bfd, input_section,
hit_data, sym_sec, rel->r_offset, signed_addend, value,
error_message))
return bfd_reloc_ok;
else
return bfd_reloc_dangerous;
}
}
else if (branch_type == ST_BRANCH_TO_THUMB
&& globals->use_blx
&& r_type == R_ARM_THM_CALL)
{
/* Make sure this is a BL. */
lower_insn |= 0x1800;
}
}
enum elf32_arm_stub_type stub_type = arm_stub_none;
if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24)
{
/* Check if a stub has to be inserted because the destination
is too far. */
struct elf32_arm_stub_hash_entry *stub_entry;
struct elf32_arm_link_hash_entry *hash;
hash = (struct elf32_arm_link_hash_entry *) h;
stub_type = arm_type_of_stub (info, input_section, rel,
st_type, &branch_type,
hash, value, sym_sec,
input_bfd, sym_name);
if (stub_type != arm_stub_none)
{
/* The target is out of reach or we are changing modes, so
redirect the branch to the local stub for this
function. */
stub_entry = elf32_arm_get_stub_entry (input_section,
sym_sec, h,
rel, globals,
stub_type);
if (stub_entry != NULL)
value = (stub_entry->stub_offset
+ stub_entry->stub_sec->output_offset
+ stub_entry->stub_sec->output_section->vma);
/* If this call becomes a call to Arm, force BLX. */
if (globals->use_blx && (r_type == R_ARM_THM_CALL))
{
if ((stub_entry
&& !arm_stub_is_thumb (stub_entry->stub_type))
|| branch_type != ST_BRANCH_TO_THUMB)
lower_insn = (lower_insn & ~0x1000) | 0x0800;
}
}
}
/* Handle calls via the PLT. */
if (stub_type == arm_stub_none && plt_offset != (bfd_vma) -1)
{
value = (splt->output_section->vma
+ splt->output_offset
+ plt_offset);
if (globals->use_blx && r_type == R_ARM_THM_CALL)
{
/* If the Thumb BLX instruction is available, convert
the BL to a BLX instruction to call the ARM-mode
PLT entry. */
lower_insn = (lower_insn & ~0x1000) | 0x0800;
branch_type = ST_BRANCH_TO_ARM;
}
else
{
/* Target the Thumb stub before the ARM PLT entry. */
value -= PLT_THUMB_STUB_SIZE;
branch_type = ST_BRANCH_TO_THUMB;
}
*unresolved_reloc_p = FALSE;
}
relocation = value + signed_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
check = relocation >> howto->rightshift;
/* If this is a signed value, the rightshift just dropped
leading 1 bits (assuming twos complement). */
if ((bfd_signed_vma) relocation >= 0)
signed_check = check;
else
signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
/* Calculate the permissable maximum and minimum values for
this relocation according to whether we're relocating for
Thumb-2 or not. */
bitsize = howto->bitsize;
if (!thumb2)
bitsize -= 2;
reloc_signed_max = (1 << (bitsize - 1)) - 1;
reloc_signed_min = ~reloc_signed_max;
/* Assumes two's complement. */
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
overflow = TRUE;
if ((lower_insn & 0x5000) == 0x4000)
/* For a BLX instruction, make sure that the relocation is rounded up
to a word boundary. This follows the semantics of the instruction
which specifies that bit 1 of the target address will come from bit
1 of the base address. */
relocation = (relocation + 2) & ~ 3;
/* Put RELOCATION back into the insn. Assumes two's complement.
We use the Thumb-2 encoding, which is safe even if dealing with
a Thumb-1 instruction by virtue of our overflow check above. */
reloc_sign = (signed_check < 0) ? 1 : 0;
upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
| ((relocation >> 12) & 0x3ff)
| (reloc_sign << 10);
lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
| (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
| (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
| ((relocation >> 1) & 0x7ff);
/* Put the relocated value back in the object file: */
bfd_put_16 (input_bfd, upper_insn, hit_data);
bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
}
break;
case R_ARM_THM_JUMP19:
/* Thumb32 conditional branch instruction. */
{
bfd_vma relocation;
bfd_boolean overflow = FALSE;
bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
bfd_signed_vma reloc_signed_max = 0xffffe;
bfd_signed_vma reloc_signed_min = -0x100000;
bfd_signed_vma signed_check;
/* Need to refetch the addend, reconstruct the top three bits,
and squish the two 11 bit pieces together. */
if (globals->use_rel)
{
bfd_vma S = (upper_insn & 0x0400) >> 10;
bfd_vma upper = (upper_insn & 0x003f);
bfd_vma J1 = (lower_insn & 0x2000) >> 13;
bfd_vma J2 = (lower_insn & 0x0800) >> 11;
bfd_vma lower = (lower_insn & 0x07ff);
upper |= J1 << 6;
upper |= J2 << 7;
upper |= (!S) << 8;
upper -= 0x0100; /* Sign extend. */
addend = (upper << 12) | (lower << 1);
signed_addend = addend;
}
/* Handle calls via the PLT. */
if (plt_offset != (bfd_vma) -1)
{
value = (splt->output_section->vma
+ splt->output_offset
+ plt_offset);
/* Target the Thumb stub before the ARM PLT entry. */
value -= PLT_THUMB_STUB_SIZE;
*unresolved_reloc_p = FALSE;
}
/* ??? Should handle interworking? GCC might someday try to
use this for tail calls. */
relocation = value + signed_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
signed_check = (bfd_signed_vma) relocation;
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
overflow = TRUE;
/* Put RELOCATION back into the insn. */
{
bfd_vma S = (relocation & 0x00100000) >> 20;
bfd_vma J2 = (relocation & 0x00080000) >> 19;
bfd_vma J1 = (relocation & 0x00040000) >> 18;
bfd_vma hi = (relocation & 0x0003f000) >> 12;
bfd_vma lo = (relocation & 0x00000ffe) >> 1;
upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
}
/* Put the relocated value back in the object file: */
bfd_put_16 (input_bfd, upper_insn, hit_data);
bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
}
case R_ARM_THM_JUMP11:
case R_ARM_THM_JUMP8:
case R_ARM_THM_JUMP6:
/* Thumb B (branch) instruction). */
{
bfd_signed_vma relocation;
bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
bfd_signed_vma signed_check;
/* CZB cannot jump backward. */
if (r_type == R_ARM_THM_JUMP6)
reloc_signed_min = 0;
if (globals->use_rel)
{
/* Need to refetch addend. */
addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
if (addend & ((howto->src_mask + 1) >> 1))
{
signed_addend = -1;
signed_addend &= ~ howto->src_mask;
signed_addend |= addend;
}
else
signed_addend = addend;
/* The value in the insn has been right shifted. We need to
undo this, so that we can perform the address calculation
in terms of bytes. */
signed_addend <<= howto->rightshift;
}
relocation = value + signed_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
relocation >>= howto->rightshift;
signed_check = relocation;
if (r_type == R_ARM_THM_JUMP6)
relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
else
relocation &= howto->dst_mask;
relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
bfd_put_16 (input_bfd, relocation, hit_data);
/* Assumes two's complement. */
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
return bfd_reloc_overflow;
return bfd_reloc_ok;
}
case R_ARM_ALU_PCREL7_0:
case R_ARM_ALU_PCREL15_8:
case R_ARM_ALU_PCREL23_15:
{
bfd_vma insn;
bfd_vma relocation;
insn = bfd_get_32 (input_bfd, hit_data);
if (globals->use_rel)
{
/* Extract the addend. */
addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
signed_addend = addend;
}
relocation = value + signed_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
insn = (insn & ~0xfff)
| ((howto->bitpos << 7) & 0xf00)
| ((relocation >> howto->bitpos) & 0xff);
bfd_put_32 (input_bfd, value, hit_data);
}
return bfd_reloc_ok;
case R_ARM_GNU_VTINHERIT:
case R_ARM_GNU_VTENTRY:
return bfd_reloc_ok;
case R_ARM_GOTOFF32:
/* Relocation is relative to the start of the
global offset table. */
BFD_ASSERT (sgot != NULL);
if (sgot == NULL)
return bfd_reloc_notsupported;
/* If we are addressing a Thumb function, we need to adjust the
address by one, so that attempts to call the function pointer will
correctly interpret it as Thumb code. */
if (branch_type == ST_BRANCH_TO_THUMB)
value += 1;
/* Note that sgot->output_offset is not involved in this
calculation. We always want the start of .got. If we
define _GLOBAL_OFFSET_TABLE in a different way, as is
permitted by the ABI, we might have to change this
calculation. */
value -= sgot->output_section->vma;
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
case R_ARM_GOTPC:
/* Use global offset table as symbol value. */
BFD_ASSERT (sgot != NULL);
if (sgot == NULL)
return bfd_reloc_notsupported;
*unresolved_reloc_p = FALSE;
value = sgot->output_section->vma;
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
case R_ARM_GOT32:
case R_ARM_GOT_PREL:
/* Relocation is to the entry for this symbol in the
global offset table. */
if (sgot == NULL)
return bfd_reloc_notsupported;
if (dynreloc_st_type == STT_GNU_IFUNC
&& plt_offset != (bfd_vma) -1
&& (h == NULL || SYMBOL_REFERENCES_LOCAL (info, h)))
{
/* We have a relocation against a locally-binding STT_GNU_IFUNC
symbol, and the relocation resolves directly to the runtime
target rather than to the .iplt entry. This means that any
.got entry would be the same value as the .igot.plt entry,
so there's no point creating both. */
sgot = globals->root.igotplt;
value = sgot->output_offset + gotplt_offset;
}
else if (h != NULL)
{
bfd_vma off;
off = h->got.offset;
BFD_ASSERT (off != (bfd_vma) -1);
if ((off & 1) != 0)
{
/* We have already processsed one GOT relocation against
this symbol. */
off &= ~1;
if (globals->root.dynamic_sections_created
&& !SYMBOL_REFERENCES_LOCAL (info, h))
*unresolved_reloc_p = FALSE;
}
else
{
Elf_Internal_Rela outrel;
if (!SYMBOL_REFERENCES_LOCAL (info, h))
{
/* If the symbol doesn't resolve locally in a static
object, we have an undefined reference. If the
symbol doesn't resolve locally in a dynamic object,
it should be resolved by the dynamic linker. */
if (globals->root.dynamic_sections_created)
{
outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
*unresolved_reloc_p = FALSE;
}
else
outrel.r_info = 0;
outrel.r_addend = 0;
}
else
{
if (dynreloc_st_type == STT_GNU_IFUNC)
outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE);
else if (info->shared)
outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
else
outrel.r_info = 0;
outrel.r_addend = dynreloc_value;
}
/* The GOT entry is initialized to zero by default.
See if we should install a different value. */
if (outrel.r_addend != 0
&& (outrel.r_info == 0 || globals->use_rel))
{
bfd_put_32 (output_bfd, outrel.r_addend,
sgot->contents + off);
outrel.r_addend = 0;
}
if (outrel.r_info != 0)
{
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ off);
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
}
h->got.offset |= 1;
}
value = sgot->output_offset + off;
}
else
{
bfd_vma off;
BFD_ASSERT (local_got_offsets != NULL &&
local_got_offsets[r_symndx] != (bfd_vma) -1);
off = 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
generated the necessary reloc. */
if ((off & 1) != 0)
off &= ~1;
else
{
if (globals->use_rel)
bfd_put_32 (output_bfd, dynreloc_value, sgot->contents + off);
if (info->shared || dynreloc_st_type == STT_GNU_IFUNC)
{
Elf_Internal_Rela outrel;
outrel.r_addend = addend + dynreloc_value;
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ off);
if (dynreloc_st_type == STT_GNU_IFUNC)
outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE);
else
outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
}
local_got_offsets[r_symndx] |= 1;
}
value = sgot->output_offset + off;
}
if (r_type != R_ARM_GOT32)
value += sgot->output_section->vma;
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
case R_ARM_TLS_LDO32:
value = value - dtpoff_base (info);
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
case R_ARM_TLS_LDM32:
{
bfd_vma off;
if (sgot == NULL)
abort ();
off = globals->tls_ldm_got.offset;
if ((off & 1) != 0)
off &= ~1;
else
{
/* If we don't know the module number, create a relocation
for it. */
if (info->shared)
{
Elf_Internal_Rela outrel;
if (srelgot == NULL)
abort ();
outrel.r_addend = 0;
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset + off);
outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
if (globals->use_rel)
bfd_put_32 (output_bfd, outrel.r_addend,
sgot->contents + off);
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
}
else
bfd_put_32 (output_bfd, 1, sgot->contents + off);
globals->tls_ldm_got.offset |= 1;
}
value = sgot->output_section->vma + sgot->output_offset + off
- (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
}
case R_ARM_TLS_CALL:
case R_ARM_THM_TLS_CALL:
case R_ARM_TLS_GD32:
case R_ARM_TLS_IE32:
case R_ARM_TLS_GOTDESC:
case R_ARM_TLS_DESCSEQ:
case R_ARM_THM_TLS_DESCSEQ:
{
bfd_vma off, offplt;
int indx = 0;
char tls_type;
BFD_ASSERT (sgot != NULL);
if (h != NULL)
{
bfd_boolean dyn;
dyn = globals->root.dynamic_sections_created;
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
&& (!info->shared
|| !SYMBOL_REFERENCES_LOCAL (info, h)))
{
*unresolved_reloc_p = FALSE;
indx = h->dynindx;
}
off = h->got.offset;
offplt = elf32_arm_hash_entry (h)->tlsdesc_got;
tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
}
else
{
BFD_ASSERT (local_got_offsets != NULL);
off = local_got_offsets[r_symndx];
offplt = local_tlsdesc_gotents[r_symndx];
tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
}
/* Linker relaxations happens from one of the
R_ARM_{GOTDESC,CALL,DESCSEQ} relocations to IE or LE. */
if (ELF32_R_TYPE(rel->r_info) != r_type)
tls_type = GOT_TLS_IE;
BFD_ASSERT (tls_type != GOT_UNKNOWN);
if ((off & 1) != 0)
off &= ~1;
else
{
bfd_boolean need_relocs = FALSE;
Elf_Internal_Rela outrel;
int cur_off = off;
/* The GOT entries have not been initialized yet. Do it
now, and emit any relocations. If both an IE GOT and a
GD GOT are necessary, we emit the GD first. */
if ((info->shared || indx != 0)
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
{
need_relocs = TRUE;
BFD_ASSERT (srelgot != NULL);
}
if (tls_type & GOT_TLS_GDESC)
{
bfd_byte *loc;
/* We should have relaxed, unless this is an undefined
weak symbol. */
BFD_ASSERT ((h && (h->root.type == bfd_link_hash_undefweak))
|| info->shared);
BFD_ASSERT (globals->sgotplt_jump_table_size + offplt + 8
<= globals->root.sgotplt->size);
outrel.r_addend = 0;
outrel.r_offset = (globals->root.sgotplt->output_section->vma
+ globals->root.sgotplt->output_offset
+ offplt
+ globals->sgotplt_jump_table_size);
outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DESC);
sreloc = globals->root.srelplt;
loc = sreloc->contents;
loc += globals->next_tls_desc_index++ * RELOC_SIZE (globals);
BFD_ASSERT (loc + RELOC_SIZE (globals)
<= sreloc->contents + sreloc->size);
SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
/* For globals, the first word in the relocation gets
the relocation index and the top bit set, or zero,
if we're binding now. For locals, it gets the
symbol's offset in the tls section. */
bfd_put_32 (output_bfd,
!h ? value - elf_hash_table (info)->tls_sec->vma
: info->flags & DF_BIND_NOW ? 0
: 0x80000000 | ELF32_R_SYM (outrel.r_info),
globals->root.sgotplt->contents + offplt +
globals->sgotplt_jump_table_size);
/* Second word in the relocation is always zero. */
bfd_put_32 (output_bfd, 0,
globals->root.sgotplt->contents + offplt +
globals->sgotplt_jump_table_size + 4);
}
if (tls_type & GOT_TLS_GD)
{
if (need_relocs)
{
outrel.r_addend = 0;
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ cur_off);
outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
if (globals->use_rel)
bfd_put_32 (output_bfd, outrel.r_addend,
sgot->contents + cur_off);
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
if (indx == 0)
bfd_put_32 (output_bfd, value - dtpoff_base (info),
sgot->contents + cur_off + 4);
else
{
outrel.r_addend = 0;
outrel.r_info = ELF32_R_INFO (indx,
R_ARM_TLS_DTPOFF32);
outrel.r_offset += 4;
if (globals->use_rel)
bfd_put_32 (output_bfd, outrel.r_addend,
sgot->contents + cur_off + 4);
elf32_arm_add_dynreloc (output_bfd, info,
srelgot, &outrel);
}
}
else
{
/* If we are not emitting relocations for a
general dynamic reference, then we must be in a
static link or an executable link with the
symbol binding locally. Mark it as belonging
to module 1, the executable. */
bfd_put_32 (output_bfd, 1,
sgot->contents + cur_off);
bfd_put_32 (output_bfd, value - dtpoff_base (info),
sgot->contents + cur_off + 4);
}
cur_off += 8;
}
if (tls_type & GOT_TLS_IE)
{
if (need_relocs)
{
if (indx == 0)
outrel.r_addend = value - dtpoff_base (info);
else
outrel.r_addend = 0;
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ cur_off);
outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
if (globals->use_rel)
bfd_put_32 (output_bfd, outrel.r_addend,
sgot->contents + cur_off);
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
}
else
bfd_put_32 (output_bfd, tpoff (info, value),
sgot->contents + cur_off);
cur_off += 4;
}
if (h != NULL)
h->got.offset |= 1;
else
local_got_offsets[r_symndx] |= 1;
}
if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
off += 8;
else if (tls_type & GOT_TLS_GDESC)
off = offplt;
if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL
|| ELF32_R_TYPE(rel->r_info) == R_ARM_THM_TLS_CALL)
{
bfd_signed_vma offset;
/* TLS stubs are arm mode. The original symbol is a
data object, so branch_type is bogus. */
branch_type = ST_BRANCH_TO_ARM;
enum elf32_arm_stub_type stub_type
= arm_type_of_stub (info, input_section, rel,
st_type, &branch_type,
(struct elf32_arm_link_hash_entry *)h,
globals->tls_trampoline, globals->root.splt,
input_bfd, sym_name);
if (stub_type != arm_stub_none)
{
struct elf32_arm_stub_hash_entry *stub_entry
= elf32_arm_get_stub_entry
(input_section, globals->root.splt, 0, rel,
globals, stub_type);
offset = (stub_entry->stub_offset
+ stub_entry->stub_sec->output_offset
+ stub_entry->stub_sec->output_section->vma);
}
else
offset = (globals->root.splt->output_section->vma
+ globals->root.splt->output_offset
+ globals->tls_trampoline);
if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL)
{
unsigned long inst;
offset -= (input_section->output_section->vma +
input_section->output_offset + rel->r_offset + 8);
inst = offset >> 2;
inst &= 0x00ffffff;
value = inst | (globals->use_blx ? 0xfa000000 : 0xeb000000);
}
else
{
/* Thumb blx encodes the offset in a complicated
fashion. */
unsigned upper_insn, lower_insn;
unsigned neg;
offset -= (input_section->output_section->vma +
input_section->output_offset
+ rel->r_offset + 4);
if (stub_type != arm_stub_none
&& arm_stub_is_thumb (stub_type))
{
lower_insn = 0xd000;
}
else
{
lower_insn = 0xc000;
/* Round up the offset to a word boundary */
offset = (offset + 2) & ~2;
}
neg = offset < 0;
upper_insn = (0xf000
| ((offset >> 12) & 0x3ff)
| (neg << 10));
lower_insn |= (((!((offset >> 23) & 1)) ^ neg) << 13)
| (((!((offset >> 22) & 1)) ^ neg) << 11)
| ((offset >> 1) & 0x7ff);
bfd_put_16 (input_bfd, upper_insn, hit_data);
bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
return bfd_reloc_ok;
}
}
/* These relocations needs special care, as besides the fact
they point somewhere in .gotplt, the addend must be
adjusted accordingly depending on the type of instruction
we refer to */
else if ((r_type == R_ARM_TLS_GOTDESC) && (tls_type & GOT_TLS_GDESC))
{
unsigned long data, insn;
unsigned thumb;
data = bfd_get_32 (input_bfd, hit_data);
thumb = data & 1;
data &= ~1u;
if (thumb)
{
insn = bfd_get_16 (input_bfd, contents + rel->r_offset - data);
if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800)
insn = (insn << 16)
| bfd_get_16 (input_bfd,
contents + rel->r_offset - data + 2);
if ((insn & 0xf800c000) == 0xf000c000)
/* bl/blx */
value = -6;
else if ((insn & 0xffffff00) == 0x4400)
/* add */
value = -5;
else
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx):unexpected Thumb instruction '0x%x' referenced by TLS_GOTDESC"),
input_bfd, input_section,
(unsigned long)rel->r_offset, insn);
return bfd_reloc_notsupported;
}
}
else
{
insn = bfd_get_32 (input_bfd, contents + rel->r_offset - data);
switch (insn >> 24)
{
case 0xeb: /* bl */
case 0xfa: /* blx */
value = -4;
break;
case 0xe0: /* add */
value = -8;
break;
default:
(*_bfd_error_handler)
(_("%B(%A+0x%lx):unexpected ARM instruction '0x%x' referenced by TLS_GOTDESC"),
input_bfd, input_section,
(unsigned long)rel->r_offset, insn);
return bfd_reloc_notsupported;
}
}
value += ((globals->root.sgotplt->output_section->vma
+ globals->root.sgotplt->output_offset + off)
- (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset)
+ globals->sgotplt_jump_table_size);
}
else
value = ((globals->root.sgot->output_section->vma
+ globals->root.sgot->output_offset + off)
- (input_section->output_section->vma
+ input_section->output_offset + rel->r_offset));
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
}
case R_ARM_TLS_LE32:
if (info->shared)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
input_bfd, input_section,
(long) rel->r_offset, howto->name);
return (bfd_reloc_status_type) FALSE;
}
else
value = tpoff (info, value);
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset, value,
rel->r_addend);
case R_ARM_V4BX:
if (globals->fix_v4bx)
{
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
/* Ensure that we have a BX instruction. */
BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
{
/* Branch to veneer. */
bfd_vma glue_addr;
glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
glue_addr -= input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset + 8;
insn = (insn & 0xf0000000) | 0x0a000000
| ((glue_addr >> 2) & 0x00ffffff);
}
else
{
/* Preserve Rm (lowest four bits) and the condition code
(highest four bits). Other bits encode MOV PC,Rm. */
insn = (insn & 0xf000000f) | 0x01a0f000;
}
bfd_put_32 (input_bfd, insn, hit_data);
}
return bfd_reloc_ok;
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
case R_ARM_MOVW_PREL_NC:
case R_ARM_MOVT_PREL:
/* Until we properly support segment-base-relative addressing then
we assume the segment base to be zero, as for the group relocations.
Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
case R_ARM_MOVW_BREL_NC:
case R_ARM_MOVW_BREL:
case R_ARM_MOVT_BREL:
{
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
if (globals->use_rel)
{
addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
signed_addend = (addend ^ 0x8000) - 0x8000;
}
value += signed_addend;
if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
value -= (input_section->output_section->vma
+ input_section->output_offset + rel->r_offset);
if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
return bfd_reloc_overflow;
if (branch_type == ST_BRANCH_TO_THUMB)
value |= 1;
if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
|| r_type == R_ARM_MOVT_BREL)
value >>= 16;
insn &= 0xfff0f000;
insn |= value & 0xfff;
insn |= (value & 0xf000) << 4;
bfd_put_32 (input_bfd, insn, hit_data);
}
return bfd_reloc_ok;
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
case R_ARM_THM_MOVW_PREL_NC:
case R_ARM_THM_MOVT_PREL:
/* Until we properly support segment-base-relative addressing then
we assume the segment base to be zero, as for the above relocations.
Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
as R_ARM_THM_MOVT_ABS. */
case R_ARM_THM_MOVW_BREL_NC:
case R_ARM_THM_MOVW_BREL:
case R_ARM_THM_MOVT_BREL:
{
bfd_vma insn;
insn = bfd_get_16 (input_bfd, hit_data) << 16;
insn |= bfd_get_16 (input_bfd, hit_data + 2);
if (globals->use_rel)
{
addend = ((insn >> 4) & 0xf000)
| ((insn >> 15) & 0x0800)
| ((insn >> 4) & 0x0700)
| (insn & 0x00ff);
signed_addend = (addend ^ 0x8000) - 0x8000;
}
value += signed_addend;
if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
value -= (input_section->output_section->vma
+ input_section->output_offset + rel->r_offset);
if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
return bfd_reloc_overflow;
if (branch_type == ST_BRANCH_TO_THUMB)
value |= 1;
if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
|| r_type == R_ARM_THM_MOVT_BREL)
value >>= 16;
insn &= 0xfbf08f00;
insn |= (value & 0xf000) << 4;
insn |= (value & 0x0800) << 15;
insn |= (value & 0x0700) << 4;
insn |= (value & 0x00ff);
bfd_put_16 (input_bfd, insn >> 16, hit_data);
bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
}
return bfd_reloc_ok;
case R_ARM_ALU_PC_G0_NC:
case R_ARM_ALU_PC_G1_NC:
case R_ARM_ALU_PC_G0:
case R_ARM_ALU_PC_G1:
case R_ARM_ALU_PC_G2:
case R_ARM_ALU_SB_G0_NC:
case R_ARM_ALU_SB_G1_NC:
case R_ARM_ALU_SB_G0:
case R_ARM_ALU_SB_G1:
case R_ARM_ALU_SB_G2:
{
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
bfd_vma pc = input_section->output_section->vma
+ input_section->output_offset + rel->r_offset;
/* sb should be the origin of the *segment* containing the symbol.
It is not clear how to obtain this OS-dependent value, so we
make an arbitrary choice of zero. */
bfd_vma sb = 0;
bfd_vma residual;
bfd_vma g_n;
bfd_signed_vma signed_value;
int group = 0;
/* Determine which group of bits to select. */
switch (r_type)
{
case R_ARM_ALU_PC_G0_NC:
case R_ARM_ALU_PC_G0:
case R_ARM_ALU_SB_G0_NC:
case R_ARM_ALU_SB_G0:
group = 0;
break;
case R_ARM_ALU_PC_G1_NC:
case R_ARM_ALU_PC_G1:
case R_ARM_ALU_SB_G1_NC:
case R_ARM_ALU_SB_G1:
group = 1;
break;
case R_ARM_ALU_PC_G2:
case R_ARM_ALU_SB_G2:
group = 2;
break;
default:
abort ();
}
/* If REL, extract the addend from the insn. If RELA, it will
have already been fetched for us. */
if (globals->use_rel)
{
int negative;
bfd_vma constant = insn & 0xff;
bfd_vma rotation = (insn & 0xf00) >> 8;
if (rotation == 0)
signed_addend = constant;
else
{
/* Compensate for the fact that in the instruction, the
rotation is stored in multiples of 2 bits. */
rotation *= 2;
/* Rotate "constant" right by "rotation" bits. */
signed_addend = (constant >> rotation) |
(constant << (8 * sizeof (bfd_vma) - rotation));
}
/* Determine if the instruction is an ADD or a SUB.
(For REL, this determines the sign of the addend.) */
negative = identify_add_or_sub (insn);
if (negative == 0)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
input_bfd, input_section,
(long) rel->r_offset, howto->name);
return bfd_reloc_overflow;
}
signed_addend *= negative;
}
/* Compute the value (X) to go in the place. */
if (r_type == R_ARM_ALU_PC_G0_NC
|| r_type == R_ARM_ALU_PC_G1_NC
|| r_type == R_ARM_ALU_PC_G0
|| r_type == R_ARM_ALU_PC_G1
|| r_type == R_ARM_ALU_PC_G2)
/* PC relative. */
signed_value = value - pc + signed_addend;
else
/* Section base relative. */
signed_value = value - sb + signed_addend;
/* If the target symbol is a Thumb function, then set the
Thumb bit in the address. */
if (branch_type == ST_BRANCH_TO_THUMB)
signed_value |= 1;
/* Calculate the value of the relevant G_n, in encoded
constant-with-rotation format. */
g_n = calculate_group_reloc_mask (abs (signed_value), group,
&residual);
/* Check for overflow if required. */
if ((r_type == R_ARM_ALU_PC_G0
|| r_type == R_ARM_ALU_PC_G1
|| r_type == R_ARM_ALU_PC_G2
|| r_type == R_ARM_ALU_SB_G0
|| r_type == R_ARM_ALU_SB_G1
|| r_type == R_ARM_ALU_SB_G2) && residual != 0)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
input_bfd, input_section,
(long) rel->r_offset, abs (signed_value), howto->name);
return bfd_reloc_overflow;
}
/* Mask out the value and the ADD/SUB part of the opcode; take care
not to destroy the S bit. */
insn &= 0xff1ff000;
/* Set the opcode according to whether the value to go in the
place is negative. */
if (signed_value < 0)
insn |= 1 << 22;
else
insn |= 1 << 23;
/* Encode the offset. */
insn |= g_n;
bfd_put_32 (input_bfd, insn, hit_data);
}
return bfd_reloc_ok;
case R_ARM_LDR_PC_G0:
case R_ARM_LDR_PC_G1:
case R_ARM_LDR_PC_G2:
case R_ARM_LDR_SB_G0:
case R_ARM_LDR_SB_G1:
case R_ARM_LDR_SB_G2:
{
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
bfd_vma pc = input_section->output_section->vma
+ input_section->output_offset + rel->r_offset;
bfd_vma sb = 0; /* See note above. */
bfd_vma residual;
bfd_signed_vma signed_value;
int group = 0;
/* Determine which groups of bits to calculate. */
switch (r_type)
{
case R_ARM_LDR_PC_G0:
case R_ARM_LDR_SB_G0:
group = 0;
break;
case R_ARM_LDR_PC_G1:
case R_ARM_LDR_SB_G1:
group = 1;
break;
case R_ARM_LDR_PC_G2:
case R_ARM_LDR_SB_G2:
group = 2;
break;
default:
abort ();
}
/* If REL, extract the addend from the insn. If RELA, it will
have already been fetched for us. */
if (globals->use_rel)
{
int negative = (insn & (1 << 23)) ? 1 : -1;
signed_addend = negative * (insn & 0xfff);
}
/* Compute the value (X) to go in the place. */
if (r_type == R_ARM_LDR_PC_G0
|| r_type == R_ARM_LDR_PC_G1
|| r_type == R_ARM_LDR_PC_G2)
/* PC relative. */
signed_value = value - pc + signed_addend;
else
/* Section base relative. */
signed_value = value - sb + signed_addend;
/* Calculate the value of the relevant G_{n-1} to obtain
the residual at that stage. */
calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
/* Check for overflow. */
if (residual >= 0x1000)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
input_bfd, input_section,
(long) rel->r_offset, abs (signed_value), howto->name);
return bfd_reloc_overflow;
}
/* Mask out the value and U bit. */
insn &= 0xff7ff000;
/* Set the U bit if the value to go in the place is non-negative. */
if (signed_value >= 0)
insn |= 1 << 23;
/* Encode the offset. */
insn |= residual;
bfd_put_32 (input_bfd, insn, hit_data);
}
return bfd_reloc_ok;
case R_ARM_LDRS_PC_G0:
case R_ARM_LDRS_PC_G1:
case R_ARM_LDRS_PC_G2:
case R_ARM_LDRS_SB_G0:
case R_ARM_LDRS_SB_G1:
case R_ARM_LDRS_SB_G2:
{
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
bfd_vma pc = input_section->output_section->vma
+ input_section->output_offset + rel->r_offset;
bfd_vma sb = 0; /* See note above. */
bfd_vma residual;
bfd_signed_vma signed_value;
int group = 0;
/* Determine which groups of bits to calculate. */
switch (r_type)
{
case R_ARM_LDRS_PC_G0:
case R_ARM_LDRS_SB_G0:
group = 0;
break;
case R_ARM_LDRS_PC_G1:
case R_ARM_LDRS_SB_G1:
group = 1;
break;
case R_ARM_LDRS_PC_G2:
case R_ARM_LDRS_SB_G2:
group = 2;
break;
default:
abort ();
}
/* If REL, extract the addend from the insn. If RELA, it will
have already been fetched for us. */
if (globals->use_rel)
{
int negative = (insn & (1 << 23)) ? 1 : -1;
signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
}
/* Compute the value (X) to go in the place. */
if (r_type == R_ARM_LDRS_PC_G0
|| r_type == R_ARM_LDRS_PC_G1
|| r_type == R_ARM_LDRS_PC_G2)
/* PC relative. */
signed_value = value - pc + signed_addend;
else
/* Section base relative. */
signed_value = value - sb + signed_addend;
/* Calculate the value of the relevant G_{n-1} to obtain
the residual at that stage. */
calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
/* Check for overflow. */
if (residual >= 0x100)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
input_bfd, input_section,
(long) rel->r_offset, abs (signed_value), howto->name);
return bfd_reloc_overflow;
}
/* Mask out the value and U bit. */
insn &= 0xff7ff0f0;
/* Set the U bit if the value to go in the place is non-negative. */
if (signed_value >= 0)
insn |= 1 << 23;
/* Encode the offset. */
insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
bfd_put_32 (input_bfd, insn, hit_data);
}
return bfd_reloc_ok;
case R_ARM_LDC_PC_G0:
case R_ARM_LDC_PC_G1:
case R_ARM_LDC_PC_G2:
case R_ARM_LDC_SB_G0:
case R_ARM_LDC_SB_G1:
case R_ARM_LDC_SB_G2:
{
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
bfd_vma pc = input_section->output_section->vma
+ input_section->output_offset + rel->r_offset;
bfd_vma sb = 0; /* See note above. */
bfd_vma residual;
bfd_signed_vma signed_value;
int group = 0;
/* Determine which groups of bits to calculate. */
switch (r_type)
{
case R_ARM_LDC_PC_G0:
case R_ARM_LDC_SB_G0:
group = 0;
break;
case R_ARM_LDC_PC_G1:
case R_ARM_LDC_SB_G1:
group = 1;
break;
case R_ARM_LDC_PC_G2:
case R_ARM_LDC_SB_G2:
group = 2;
break;
default:
abort ();
}
/* If REL, extract the addend from the insn. If RELA, it will
have already been fetched for us. */
if (globals->use_rel)
{
int negative = (insn & (1 << 23)) ? 1 : -1;
signed_addend = negative * ((insn & 0xff) << 2);
}
/* Compute the value (X) to go in the place. */
if (r_type == R_ARM_LDC_PC_G0
|| r_type == R_ARM_LDC_PC_G1
|| r_type == R_ARM_LDC_PC_G2)
/* PC relative. */
signed_value = value - pc + signed_addend;
else
/* Section base relative. */
signed_value = value - sb + signed_addend;
/* Calculate the value of the relevant G_{n-1} to obtain
the residual at that stage. */
calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
/* Check for overflow. (The absolute value to go in the place must be
divisible by four and, after having been divided by four, must
fit in eight bits.) */
if ((residual & 0x3) != 0 || residual >= 0x400)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
input_bfd, input_section,
(long) rel->r_offset, abs (signed_value), howto->name);
return bfd_reloc_overflow;
}
/* Mask out the value and U bit. */
insn &= 0xff7fff00;
/* Set the U bit if the value to go in the place is non-negative. */
if (signed_value >= 0)
insn |= 1 << 23;
/* Encode the offset. */
insn |= residual >> 2;
bfd_put_32 (input_bfd, insn, hit_data);
}
return bfd_reloc_ok;
default:
return bfd_reloc_notsupported;
}
}
/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
static void
arm_add_to_rel (bfd * abfd,
bfd_byte * address,
reloc_howto_type * howto,
bfd_signed_vma increment)
{
bfd_signed_vma addend;
if (howto->type == R_ARM_THM_CALL
|| howto->type == R_ARM_THM_JUMP24)
{
int upper_insn, lower_insn;
int upper, lower;
upper_insn = bfd_get_16 (abfd, address);
lower_insn = bfd_get_16 (abfd, address + 2);
upper = upper_insn & 0x7ff;
lower = lower_insn & 0x7ff;
addend = (upper << 12) | (lower << 1);
addend += increment;
addend >>= 1;
upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
}
else
{
bfd_vma contents;
contents = bfd_get_32 (abfd, address);
/* Get the (signed) value from the instruction. */
addend = contents & howto->src_mask;
if (addend & ((howto->src_mask + 1) >> 1))
{
bfd_signed_vma mask;
mask = -1;
mask &= ~ howto->src_mask;
addend |= mask;
}
/* Add in the increment, (which is a byte value). */
switch (howto->type)
{
default:
addend += increment;
break;
case R_ARM_PC24:
case R_ARM_PLT32:
case R_ARM_CALL:
case R_ARM_JUMP24:
addend <<= howto->size;
addend += increment;
/* Should we check for overflow here ? */
/* Drop any undesired bits. */
addend >>= howto->rightshift;
break;
}
contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
bfd_put_32 (abfd, contents, address);
}
}
#define IS_ARM_TLS_RELOC(R_TYPE) \
((R_TYPE) == R_ARM_TLS_GD32 \
|| (R_TYPE) == R_ARM_TLS_LDO32 \
|| (R_TYPE) == R_ARM_TLS_LDM32 \
|| (R_TYPE) == R_ARM_TLS_DTPOFF32 \
|| (R_TYPE) == R_ARM_TLS_DTPMOD32 \
|| (R_TYPE) == R_ARM_TLS_TPOFF32 \
|| (R_TYPE) == R_ARM_TLS_LE32 \
|| (R_TYPE) == R_ARM_TLS_IE32 \
|| IS_ARM_TLS_GNU_RELOC (R_TYPE))
/* Specific set of relocations for the gnu tls dialect. */
#define IS_ARM_TLS_GNU_RELOC(R_TYPE) \
((R_TYPE) == R_ARM_TLS_GOTDESC \
|| (R_TYPE) == R_ARM_TLS_CALL \
|| (R_TYPE) == R_ARM_THM_TLS_CALL \
|| (R_TYPE) == R_ARM_TLS_DESCSEQ \
|| (R_TYPE) == R_ARM_THM_TLS_DESCSEQ)
/* Relocate an ARM ELF section. */
static bfd_boolean
elf32_arm_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;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
const char *name;
struct elf32_arm_link_hash_table * globals;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return FALSE;
symtab_hdr = & elf_symtab_hdr (input_bfd);
sym_hashes = elf_sym_hashes (input_bfd);
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
reloc_howto_type * howto;
unsigned long r_symndx;
Elf_Internal_Sym * sym;
asection * sec;
struct elf_link_hash_entry * h;
bfd_vma relocation;
bfd_reloc_status_type r;
arelent bfd_reloc;
char sym_type;
bfd_boolean unresolved_reloc = FALSE;
char *error_message = NULL;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
r_type = arm_real_reloc_type (globals, r_type);
if ( r_type == R_ARM_GNU_VTENTRY
|| r_type == R_ARM_GNU_VTINHERIT)
continue;
bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
howto = bfd_reloc.howto;
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sym_type = ELF32_ST_TYPE (sym->st_info);
sec = local_sections[r_symndx];
/* An object file might have a reference to a local
undefined symbol. This is a daft object file, but we
should at least do something about it. V4BX & NONE
relocations do not use the symbol and are explicitly
allowed to use the undefined symbol, so allow those.
Likewise for relocations against STN_UNDEF. */
if (r_type != R_ARM_V4BX
&& r_type != R_ARM_NONE
&& r_symndx != STN_UNDEF
&& bfd_is_und_section (sec)
&& ELF_ST_BIND (sym->st_info) != STB_WEAK)
{
if (!info->callbacks->undefined_symbol
(info, bfd_elf_string_from_elf_section
(input_bfd, symtab_hdr->sh_link, sym->st_name),
input_bfd, input_section,
rel->r_offset, TRUE))
return FALSE;
}
if (globals->use_rel)
{
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
if (!info->relocatable
&& (sec->flags & SEC_MERGE)
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
asection *msec;
bfd_vma addend, value;
switch (r_type)
{
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
value = bfd_get_32 (input_bfd, contents + rel->r_offset);
addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
addend = (addend ^ 0x8000) - 0x8000;
break;
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
value = bfd_get_16 (input_bfd, contents + rel->r_offset)
<< 16;
value |= bfd_get_16 (input_bfd,
contents + rel->r_offset + 2);
addend = ((value & 0xf7000) >> 4) | (value & 0xff)
| ((value & 0x04000000) >> 15);
addend = (addend ^ 0x8000) - 0x8000;
break;
default:
if (howto->rightshift
|| (howto->src_mask & (howto->src_mask + 1)))
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
input_bfd, input_section,
(long) rel->r_offset, howto->name);
return FALSE;
}
value = bfd_get_32 (input_bfd, contents + rel->r_offset);
/* Get the (signed) value from the instruction. */
addend = value & howto->src_mask;
if (addend & ((howto->src_mask + 1) >> 1))
{
bfd_signed_vma mask;
mask = -1;
mask &= ~ howto->src_mask;
addend |= mask;
}
break;
}
msec = sec;
addend =
_bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
- relocation;
addend += msec->output_section->vma + msec->output_offset;
/* Cases here must match those in the preceding
switch statement. */
switch (r_type)
{
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
| (addend & 0xfff);
bfd_put_32 (input_bfd, value, contents + rel->r_offset);
break;
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
| (addend & 0xff) | ((addend & 0x0800) << 15);
bfd_put_16 (input_bfd, value >> 16,
contents + rel->r_offset);
bfd_put_16 (input_bfd, value,
contents + rel->r_offset + 2);
break;
default:
value = (value & ~ howto->dst_mask)
| (addend & howto->dst_mask);
bfd_put_32 (input_bfd, value, contents + rel->r_offset);
break;
}
}
}
else
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
bfd_boolean warned;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
sym_type = h->type;
}
if (sec != NULL && elf_discarded_section (sec))
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
rel, relend, howto, contents);
if (info->relocatable)
{
/* This is a relocatable link. We don't have to change
anything, unless the reloc is against a section symbol,
in which case we have to adjust according to where the
section symbol winds up in the output section. */
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
if (globals->use_rel)
arm_add_to_rel (input_bfd, contents + rel->r_offset,
howto, (bfd_signed_vma) sec->output_offset);
else
rel->r_addend += sec->output_offset;
}
continue;
}
if (h != NULL)
name = h->root.root.string;
else
{
name = (bfd_elf_string_from_elf_section
(input_bfd, symtab_hdr->sh_link, sym->st_name));
if (name == NULL || *name == '\0')
name = bfd_section_name (input_bfd, sec);
}
if (r_symndx != STN_UNDEF
&& r_type != R_ARM_NONE
&& (h == NULL
|| h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
{
(*_bfd_error_handler)
((sym_type == STT_TLS
? _("%B(%A+0x%lx): %s used with TLS symbol %s")
: _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
input_bfd,
input_section,
(long) rel->r_offset,
howto->name,
name);
}
/* We call elf32_arm_final_link_relocate unless we're completely
done, i.e., the relaxation produced the final output we want,
and we won't let anybody mess with it. Also, we have to do
addend adjustments in case of a R_ARM_TLS_GOTDESC relocation
both in relaxed and non-relaxed cases */
if ((elf32_arm_tls_transition (info, r_type, h) != (unsigned)r_type)
|| (IS_ARM_TLS_GNU_RELOC (r_type)
&& !((h ? elf32_arm_hash_entry (h)->tls_type :
elf32_arm_local_got_tls_type (input_bfd)[r_symndx])
& GOT_TLS_GDESC)))
{
r = elf32_arm_tls_relax (globals, input_bfd, input_section,
contents, rel, h == NULL);
/* This may have been marked unresolved because it came from
a shared library. But we've just dealt with that. */
unresolved_reloc = 0;
}
else
r = bfd_reloc_continue;
if (r == bfd_reloc_continue)
r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
input_section, contents, rel,
relocation, info, sec, name, sym_type,
(h ? h->target_internal
: ARM_SYM_BRANCH_TYPE (sym)), h,
&unresolved_reloc, &error_message);
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
because such sections are not SEC_ALLOC and thus ld.so will
not process them. */
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,
h->root.root.string);
return FALSE;
}
if (r != bfd_reloc_ok)
{
switch (r)
{
case bfd_reloc_overflow:
/* If the overflowing reloc was to an undefined symbol,
we have already printed one error message and there
is no point complaining again. */
if ((! h ||
h->root.type != bfd_link_hash_undefined)
&& (!((*info->callbacks->reloc_overflow)
(info, (h ? &h->root : NULL), name, howto->name,
(bfd_vma) 0, input_bfd, input_section,
rel->r_offset))))
return FALSE;
break;
case bfd_reloc_undefined:
if (!((*info->callbacks->undefined_symbol)
(info, name, input_bfd, input_section,
rel->r_offset, TRUE)))
return FALSE;
break;
case bfd_reloc_outofrange:
error_message = _("out of range");
goto common_error;
case bfd_reloc_notsupported:
error_message = _("unsupported relocation");
goto common_error;
case bfd_reloc_dangerous:
/* error_message should already be set. */
goto common_error;
default:
error_message = _("unknown error");
/* Fall through. */
common_error:
BFD_ASSERT (error_message != NULL);
if (!((*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section,
rel->r_offset)))
return FALSE;
break;
}
}
}
return TRUE;
}
/* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
adds the edit to the start of the list. (The list must be built in order of
ascending TINDEX: the function's callers are primarily responsible for
maintaining that condition). */
static void
add_unwind_table_edit (arm_unwind_table_edit **head,
arm_unwind_table_edit **tail,
arm_unwind_edit_type type,
asection *linked_section,
unsigned int tindex)
{
arm_unwind_table_edit *new_edit = (arm_unwind_table_edit *)
xmalloc (sizeof (arm_unwind_table_edit));
new_edit->type = type;
new_edit->linked_section = linked_section;
new_edit->index = tindex;
if (tindex > 0)
{
new_edit->next = NULL;
if (*tail)
(*tail)->next = new_edit;
(*tail) = new_edit;
if (!*head)
(*head) = new_edit;
}
else
{
new_edit->next = *head;
if (!*tail)
*tail = new_edit;
*head = new_edit;
}
}
static _arm_elf_section_data *get_arm_elf_section_data (asection *);
/* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST mau be negative. */
static void
adjust_exidx_size(asection *exidx_sec, int adjust)
{
asection *out_sec;
if (!exidx_sec->rawsize)
exidx_sec->rawsize = exidx_sec->size;
bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust);
out_sec = exidx_sec->output_section;
/* Adjust size of output section. */
bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust);
}
/* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
static void
insert_cantunwind_after(asection *text_sec, asection *exidx_sec)
{
struct _arm_elf_section_data *exidx_arm_data;
exidx_arm_data = get_arm_elf_section_data (exidx_sec);
add_unwind_table_edit (
&exidx_arm_data->u.exidx.unwind_edit_list,
&exidx_arm_data->u.exidx.unwind_edit_tail,
INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX);
adjust_exidx_size(exidx_sec, 8);
}
/* Scan .ARM.exidx tables, and create a list describing edits which should be
made to those tables, such that:
1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
codes which have been inlined into the index).
If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
The edits are applied when the tables are written
(in elf32_arm_write_section).
*/
bfd_boolean
elf32_arm_fix_exidx_coverage (asection **text_section_order,
unsigned int num_text_sections,
struct bfd_link_info *info,
bfd_boolean merge_exidx_entries)
{
bfd *inp;
unsigned int last_second_word = 0, i;
asection *last_exidx_sec = NULL;
asection *last_text_sec = NULL;
int last_unwind_type = -1;
/* Walk over all EXIDX sections, and create backlinks from the corrsponding
text sections. */
for (inp = info->input_bfds; inp != NULL; inp = inp->link_next)
{
asection *sec;
for (sec = inp->sections; sec != NULL; sec = sec->next)
{
struct bfd_elf_section_data *elf_sec = elf_section_data (sec);
Elf_Internal_Shdr *hdr = &elf_sec->this_hdr;
if (!hdr || hdr->sh_type != SHT_ARM_EXIDX)
continue;
if (elf_sec->linked_to)
{
Elf_Internal_Shdr *linked_hdr
= &elf_section_data (elf_sec->linked_to)->this_hdr;
struct _arm_elf_section_data *linked_sec_arm_data
= get_arm_elf_section_data (linked_hdr->bfd_section);
if (linked_sec_arm_data == NULL)
continue;
/* Link this .ARM.exidx section back from the text section it
describes. */
linked_sec_arm_data->u.text.arm_exidx_sec = sec;
}
}
}
/* Walk all text sections in order of increasing VMA. Eilminate duplicate
index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
for (i = 0; i < num_text_sections; i++)
{
asection *sec = text_section_order[i];
asection *exidx_sec;
struct _arm_elf_section_data *arm_data = get_arm_elf_section_data (sec);
struct _arm_elf_section_data *exidx_arm_data;
bfd_byte *contents = NULL;
int deleted_exidx_bytes = 0;
bfd_vma j;
arm_unwind_table_edit *unwind_edit_head = NULL;
arm_unwind_table_edit *unwind_edit_tail = NULL;
Elf_Internal_Shdr *hdr;
bfd *ibfd;
if (arm_data == NULL)
continue;
exidx_sec = arm_data->u.text.arm_exidx_sec;
if (exidx_sec == NULL)
{
/* Section has no unwind data. */
if (last_unwind_type == 0 || !last_exidx_sec)
continue;
/* Ignore zero sized sections. */
if (sec->size == 0)
continue;
insert_cantunwind_after(last_text_sec, last_exidx_sec);
last_unwind_type = 0;
continue;
}
/* Skip /DISCARD/ sections. */
if (bfd_is_abs_section (exidx_sec->output_section))
continue;
hdr = &elf_section_data (exidx_sec)->this_hdr;
if (hdr->sh_type != SHT_ARM_EXIDX)
continue;
exidx_arm_data = get_arm_elf_section_data (exidx_sec);
if (exidx_arm_data == NULL)
continue;
ibfd = exidx_sec->owner;
if (hdr->contents != NULL)
contents = hdr->contents;
else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents))
/* An error? */
continue;
for (j = 0; j < hdr->sh_size; j += 8)
{
unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4);
int unwind_type;
int elide = 0;
/* An EXIDX_CANTUNWIND entry. */
if (second_word == 1)
{
if (last_unwind_type == 0)
elide = 1;
unwind_type = 0;
}
/* Inlined unwinding data. Merge if equal to previous. */
else if ((second_word & 0x80000000) != 0)
{
if (merge_exidx_entries
&& last_second_word == second_word && last_unwind_type == 1)
elide = 1;
unwind_type = 1;
last_second_word = second_word;
}
/* Normal table entry. In theory we could merge these too,
but duplicate entries are likely to be much less common. */
else
unwind_type = 2;
if (elide)
{
add_unwind_table_edit (&unwind_edit_head, &unwind_edit_tail,
DELETE_EXIDX_ENTRY, NULL, j / 8);
deleted_exidx_bytes += 8;
}
last_unwind_type = unwind_type;
}
/* Free contents if we allocated it ourselves. */
if (contents != hdr->contents)
free (contents);
/* Record edits to be applied later (in elf32_arm_write_section). */
exidx_arm_data->u.exidx.unwind_edit_list = unwind_edit_head;
exidx_arm_data->u.exidx.unwind_edit_tail = unwind_edit_tail;
if (deleted_exidx_bytes > 0)
adjust_exidx_size(exidx_sec, -deleted_exidx_bytes);
last_exidx_sec = exidx_sec;
last_text_sec = sec;
}
/* Add terminating CANTUNWIND entry. */
if (last_exidx_sec && last_unwind_type != 0)
insert_cantunwind_after(last_text_sec, last_exidx_sec);
return TRUE;
}
static bfd_boolean
elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd,
bfd *ibfd, const char *name)
{
asection *sec, *osec;
sec = bfd_get_section_by_name (ibfd, name);
if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0)
return TRUE;
osec = sec->output_section;
if (elf32_arm_write_section (obfd, info, sec, sec->contents))
return TRUE;
if (! bfd_set_section_contents (obfd, osec, sec->contents,
sec->output_offset, sec->size))
return FALSE;
return TRUE;
}
static bfd_boolean
elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info)
{
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info);
asection *sec, *osec;
if (globals == NULL)
return FALSE;
/* Invoke the regular ELF backend linker to do all the work. */
if (!bfd_elf_final_link (abfd, info))
return FALSE;
/* Process stub sections (eg BE8 encoding, ...). */
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
int i;
for (i=0; i<htab->top_id; i++)
{
sec = htab->stub_group[i].stub_sec;
/* Only process it once, in its link_sec slot. */
if (sec && i == htab->stub_group[i].link_sec->id)
{
osec = sec->output_section;
elf32_arm_write_section (abfd, info, sec, sec->contents);
if (! bfd_set_section_contents (abfd, osec, sec->contents,
sec->output_offset, sec->size))
return FALSE;
}
}
/* Write out any glue sections now that we have created all the
stubs. */
if (globals->bfd_of_glue_owner != NULL)
{
if (! elf32_arm_output_glue_section (info, abfd,
globals->bfd_of_glue_owner,
ARM2THUMB_GLUE_SECTION_NAME))
return FALSE;
if (! elf32_arm_output_glue_section (info, abfd,
globals->bfd_of_glue_owner,
THUMB2ARM_GLUE_SECTION_NAME))
return FALSE;
if (! elf32_arm_output_glue_section (info, abfd,
globals->bfd_of_glue_owner,
VFP11_ERRATUM_VENEER_SECTION_NAME))
return FALSE;
if (! elf32_arm_output_glue_section (info, abfd,
globals->bfd_of_glue_owner,
ARM_BX_GLUE_SECTION_NAME))
return FALSE;
}
return TRUE;
}
/* Set the right machine number. */
static bfd_boolean
elf32_arm_object_p (bfd *abfd)
{
unsigned int mach;
mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
if (mach != bfd_mach_arm_unknown)
bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
else
bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
return TRUE;
}
/* Function to keep ARM specific flags in the ELF header. */
static bfd_boolean
elf32_arm_set_private_flags (bfd *abfd, flagword flags)
{
if (elf_flags_init (abfd)
&& elf_elfheader (abfd)->e_flags != flags)
{
if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
{
if (flags & EF_ARM_INTERWORK)
(*_bfd_error_handler)
(_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
abfd);
else
_bfd_error_handler
(_("Warning: Clearing the interworking flag of %B due to outside request"),
abfd);
}
}
else
{
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = TRUE;
}
return TRUE;
}
/* Copy backend specific data from one object module to another. */
static bfd_boolean
elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
{
flagword in_flags;
flagword out_flags;
if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
return TRUE;
in_flags = elf_elfheader (ibfd)->e_flags;
out_flags = elf_elfheader (obfd)->e_flags;
if (elf_flags_init (obfd)
&& EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
&& in_flags != out_flags)
{
/* Cannot mix APCS26 and APCS32 code. */
if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
return FALSE;
/* Cannot mix float APCS and non-float APCS code. */
if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
return FALSE;
/* If the src and dest have different interworking flags
then turn off the interworking bit. */
if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
{
if (out_flags & EF_ARM_INTERWORK)
_bfd_error_handler
(_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
obfd, ibfd);
in_flags &= ~EF_ARM_INTERWORK;
}
/* Likewise for PIC, though don't warn for this case. */
if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
in_flags &= ~EF_ARM_PIC;
}
elf_elfheader (obfd)->e_flags = in_flags;
elf_flags_init (obfd) = TRUE;
/* Also copy the EI_OSABI field. */
elf_elfheader (obfd)->e_ident[EI_OSABI] =
elf_elfheader (ibfd)->e_ident[EI_OSABI];
/* Copy object attributes. */
_bfd_elf_copy_obj_attributes (ibfd, obfd);
return TRUE;
}
/* Values for Tag_ABI_PCS_R9_use. */
enum
{
AEABI_R9_V6,
AEABI_R9_SB,
AEABI_R9_TLS,
AEABI_R9_unused
};
/* Values for Tag_ABI_PCS_RW_data. */
enum
{
AEABI_PCS_RW_data_absolute,
AEABI_PCS_RW_data_PCrel,
AEABI_PCS_RW_data_SBrel,
AEABI_PCS_RW_data_unused
};
/* Values for Tag_ABI_enum_size. */
enum
{
AEABI_enum_unused,
AEABI_enum_short,
AEABI_enum_wide,
AEABI_enum_forced_wide
};
/* Determine whether an object attribute tag takes an integer, a
string or both. */
static int
elf32_arm_obj_attrs_arg_type (int tag)
{
if (tag == Tag_compatibility)
return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
else if (tag == Tag_nodefaults)
return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT;
else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name)
return ATTR_TYPE_FLAG_STR_VAL;
else if (tag < 32)
return ATTR_TYPE_FLAG_INT_VAL;
else
return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
}
/* The ABI defines that Tag_conformance should be emitted first, and that
Tag_nodefaults should be second (if either is defined). This sets those
two positions, and bumps up the position of all the remaining tags to
compensate. */
static int
elf32_arm_obj_attrs_order (int num)
{
if (num == LEAST_KNOWN_OBJ_ATTRIBUTE)
return Tag_conformance;
if (num == LEAST_KNOWN_OBJ_ATTRIBUTE + 1)
return Tag_nodefaults;
if ((num - 2) < Tag_nodefaults)
return num - 2;
if ((num - 1) < Tag_conformance)
return num - 1;
return num;
}
/* Attribute numbers >=64 (mod 128) can be safely ignored. */
static bfd_boolean
elf32_arm_obj_attrs_handle_unknown (bfd *abfd, int tag)
{
if ((tag & 127) < 64)
{
_bfd_error_handler
(_("%B: Unknown mandatory EABI object attribute %d"),
abfd, tag);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
else
{
_bfd_error_handler
(_("Warning: %B: Unknown EABI object attribute %d"),
abfd, tag);
return TRUE;
}
}
/* Read the architecture from the Tag_also_compatible_with attribute, if any.
Returns -1 if no architecture could be read. */
static int
get_secondary_compatible_arch (bfd *abfd)
{
obj_attribute *attr =
&elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
/* Note: the tag and its argument below are uleb128 values, though
currently-defined values fit in one byte for each. */
if (attr->s
&& attr->s[0] == Tag_CPU_arch
&& (attr->s[1] & 128) != 128
&& attr->s[2] == 0)
return attr->s[1];
/* This tag is "safely ignorable", so don't complain if it looks funny. */
return -1;
}
/* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
The tag is removed if ARCH is -1. */
static void
set_secondary_compatible_arch (bfd *abfd, int arch)
{
obj_attribute *attr =
&elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
if (arch == -1)
{
attr->s = NULL;
return;
}
/* Note: the tag and its argument below are uleb128 values, though
currently-defined values fit in one byte for each. */
if (!attr->s)
attr->s = (char *) bfd_alloc (abfd, 3);
attr->s[0] = Tag_CPU_arch;
attr->s[1] = arch;
attr->s[2] = '\0';
}
/* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
into account. */
static int
tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out,
int newtag, int secondary_compat)
{
#define T(X) TAG_CPU_ARCH_##X
int tagl, tagh, result;
const int v6t2[] =
{
T(V6T2), /* PRE_V4. */
T(V6T2), /* V4. */
T(V6T2), /* V4T. */
T(V6T2), /* V5T. */
T(V6T2), /* V5TE. */
T(V6T2), /* V5TEJ. */
T(V6T2), /* V6. */
T(V7), /* V6KZ. */
T(V6T2) /* V6T2. */
};
const int v6k[] =
{
T(V6K), /* PRE_V4. */
T(V6K), /* V4. */
T(V6K), /* V4T. */
T(V6K), /* V5T. */
T(V6K), /* V5TE. */
T(V6K), /* V5TEJ. */
T(V6K), /* V6. */
T(V6KZ), /* V6KZ. */
T(V7), /* V6T2. */
T(V6K) /* V6K. */
};
const int v7[] =
{
T(V7), /* PRE_V4. */
T(V7), /* V4. */
T(V7), /* V4T. */
T(V7), /* V5T. */
T(V7), /* V5TE. */
T(V7), /* V5TEJ. */
T(V7), /* V6. */
T(V7), /* V6KZ. */
T(V7), /* V6T2. */
T(V7), /* V6K. */
T(V7) /* V7. */
};
const int v6_m[] =
{
-1, /* PRE_V4. */
-1, /* V4. */
T(V6K), /* V4T. */
T(V6K), /* V5T. */
T(V6K), /* V5TE. */
T(V6K), /* V5TEJ. */
T(V6K), /* V6. */
T(V6KZ), /* V6KZ. */
T(V7), /* V6T2. */
T(V6K), /* V6K. */
T(V7), /* V7. */
T(V6_M) /* V6_M. */
};
const int v6s_m[] =
{
-1, /* PRE_V4. */
-1, /* V4. */
T(V6K), /* V4T. */
T(V6K), /* V5T. */
T(V6K), /* V5TE. */
T(V6K), /* V5TEJ. */
T(V6K), /* V6. */
T(V6KZ), /* V6KZ. */
T(V7), /* V6T2. */
T(V6K), /* V6K. */
T(V7), /* V7. */
T(V6S_M), /* V6_M. */
T(V6S_M) /* V6S_M. */
};
const int v7e_m[] =
{
-1, /* PRE_V4. */
-1, /* V4. */
T(V7E_M), /* V4T. */
T(V7E_M), /* V5T. */
T(V7E_M), /* V5TE. */
T(V7E_M), /* V5TEJ. */
T(V7E_M), /* V6. */
T(V7E_M), /* V6KZ. */
T(V7E_M), /* V6T2. */
T(V7E_M), /* V6K. */
T(V7E_M), /* V7. */
T(V7E_M), /* V6_M. */
T(V7E_M), /* V6S_M. */
T(V7E_M) /* V7E_M. */
};
const int v4t_plus_v6_m[] =
{
-1, /* PRE_V4. */
-1, /* V4. */
T(V4T), /* V4T. */
T(V5T), /* V5T. */
T(V5TE), /* V5TE. */
T(V5TEJ), /* V5TEJ. */
T(V6), /* V6. */
T(V6KZ), /* V6KZ. */
T(V6T2), /* V6T2. */
T(V6K), /* V6K. */
T(V7), /* V7. */
T(V6_M), /* V6_M. */
T(V6S_M), /* V6S_M. */
T(V7E_M), /* V7E_M. */
T(V4T_PLUS_V6_M) /* V4T plus V6_M. */
};
const int *comb[] =
{
v6t2,
v6k,
v7,
v6_m,
v6s_m,
v7e_m,
/* Pseudo-architecture. */
v4t_plus_v6_m
};
/* Check we've not got a higher architecture than we know about. */
if (oldtag > MAX_TAG_CPU_ARCH || newtag > MAX_TAG_CPU_ARCH)
{
_bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd);
return -1;
}
/* Override old tag if we have a Tag_also_compatible_with on the output. */
if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T))
|| (oldtag == T(V4T) && *secondary_compat_out == T(V6_M)))
oldtag = T(V4T_PLUS_V6_M);
/* And override the new tag if we have a Tag_also_compatible_with on the
input. */
if ((newtag == T(V6_M) && secondary_compat == T(V4T))
|| (newtag == T(V4T) && secondary_compat == T(V6_M)))
newtag = T(V4T_PLUS_V6_M);
tagl = (oldtag < newtag) ? oldtag : newtag;
result = tagh = (oldtag > newtag) ? oldtag : newtag;
/* Architectures before V6KZ add features monotonically. */
if (tagh <= TAG_CPU_ARCH_V6KZ)
return result;
result = comb[tagh - T(V6T2)][tagl];
/* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
as the canonical version. */
if (result == T(V4T_PLUS_V6_M))
{
result = T(V4T);
*secondary_compat_out = T(V6_M);
}
else
*secondary_compat_out = -1;
if (result == -1)
{
_bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"),
ibfd, oldtag, newtag);
return -1;
}
return result;
#undef T
}
/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
are conflicting attributes. */
static bfd_boolean
elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
{
obj_attribute *in_attr;
obj_attribute *out_attr;
/* Some tags have 0 = don't care, 1 = strong requirement,
2 = weak requirement. */
static const int order_021[3] = {0, 2, 1};
int i;
bfd_boolean result = TRUE;
/* Skip the linker stubs file. This preserves previous behavior
of accepting unknown attributes in the first input file - but
is that a bug? */
if (ibfd->flags & BFD_LINKER_CREATED)
return TRUE;
if (!elf_known_obj_attributes_proc (obfd)[0].i)
{
/* This is the first object. Copy the attributes. */
_bfd_elf_copy_obj_attributes (ibfd, obfd);
out_attr = elf_known_obj_attributes_proc (obfd);
/* Use the Tag_null value to indicate the attributes have been
initialized. */
out_attr[0].i = 1;
/* We do not output objects with Tag_MPextension_use_legacy - we move
the attribute's value to Tag_MPextension_use. */
if (out_attr[Tag_MPextension_use_legacy].i != 0)
{
if (out_attr[Tag_MPextension_use].i != 0
&& out_attr[Tag_MPextension_use_legacy].i
!= out_attr[Tag_MPextension_use].i)
{
_bfd_error_handler
(_("Error: %B has both the current and legacy "
"Tag_MPextension_use attributes"), ibfd);
result = FALSE;
}
out_attr[Tag_MPextension_use] =
out_attr[Tag_MPextension_use_legacy];
out_attr[Tag_MPextension_use_legacy].type = 0;
out_attr[Tag_MPextension_use_legacy].i = 0;
}
return result;
}
in_attr = elf_known_obj_attributes_proc (ibfd);
out_attr = elf_known_obj_attributes_proc (obfd);
/* This needs to happen before Tag_ABI_FP_number_model is merged. */
if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
{
/* Ignore mismatches if the object doesn't use floating point. */
if (out_attr[Tag_ABI_FP_number_model].i == 0)
out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
else if (in_attr[Tag_ABI_FP_number_model].i != 0)
{
_bfd_error_handler
(_("error: %B uses VFP register arguments, %B does not"),
in_attr[Tag_ABI_VFP_args].i ? ibfd : obfd,
in_attr[Tag_ABI_VFP_args].i ? obfd : ibfd);
result = FALSE;
}
}
for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
{
/* Merge this attribute with existing attributes. */
switch (i)
{
case Tag_CPU_raw_name:
case Tag_CPU_name:
/* These are merged after Tag_CPU_arch. */
break;
case Tag_ABI_optimization_goals:
case Tag_ABI_FP_optimization_goals:
/* Use the first value seen. */
break;
case Tag_CPU_arch:
{
int secondary_compat = -1, secondary_compat_out = -1;
unsigned int saved_out_attr = out_attr[i].i;
static const char *name_table[] = {
/* These aren't real CPU names, but we can't guess
that from the architecture version alone. */
"Pre v4",
"ARM v4",
"ARM v4T",
"ARM v5T",
"ARM v5TE",
"ARM v5TEJ",
"ARM v6",
"ARM v6KZ",
"ARM v6T2",
"ARM v6K",
"ARM v7",
"ARM v6-M",
"ARM v6S-M"
};
/* Merge Tag_CPU_arch and Tag_also_compatible_with. */
secondary_compat = get_secondary_compatible_arch (ibfd);
secondary_compat_out = get_secondary_compatible_arch (obfd);
out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i,
&secondary_compat_out,
in_attr[i].i,
secondary_compat);
set_secondary_compatible_arch (obfd, secondary_compat_out);
/* Merge Tag_CPU_name and Tag_CPU_raw_name. */
if (out_attr[i].i == saved_out_attr)
; /* Leave the names alone. */
else if (out_attr[i].i == in_attr[i].i)
{
/* The output architecture has been changed to match the
input architecture. Use the input names. */
out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s
? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s)
: NULL;
out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s
? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s)
: NULL;
}
else
{
out_attr[Tag_CPU_name].s = NULL;
out_attr[Tag_CPU_raw_name].s = NULL;
}
/* If we still don't have a value for Tag_CPU_name,
make one up now. Tag_CPU_raw_name remains blank. */
if (out_attr[Tag_CPU_name].s == NULL
&& out_attr[i].i < ARRAY_SIZE (name_table))
out_attr[Tag_CPU_name].s =
_bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]);
}
break;
case Tag_ARM_ISA_use:
case Tag_THUMB_ISA_use:
case Tag_WMMX_arch:
case Tag_Advanced_SIMD_arch:
/* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
case Tag_ABI_FP_rounding:
case Tag_ABI_FP_exceptions:
case Tag_ABI_FP_user_exceptions:
case Tag_ABI_FP_number_model:
case Tag_FP_HP_extension:
case Tag_CPU_unaligned_access:
case Tag_T2EE_use:
case Tag_MPextension_use:
/* Use the largest value specified. */
if (in_attr[i].i > out_attr[i].i)
out_attr[i].i = in_attr[i].i;
break;
case Tag_ABI_align_preserved:
case Tag_ABI_PCS_RO_data:
/* Use the smallest value specified. */
if (in_attr[i].i < out_attr[i].i)
out_attr[i].i = in_attr[i].i;
break;
case Tag_ABI_align_needed:
if ((in_attr[i].i > 0 || out_attr[i].i > 0)
&& (in_attr[Tag_ABI_align_preserved].i == 0
|| out_attr[Tag_ABI_align_preserved].i == 0))
{
/* This error message should be enabled once all non-conformant
binaries in the toolchain have had the attributes set
properly.
_bfd_error_handler
(_("error: %B: 8-byte data alignment conflicts with %B"),
obfd, ibfd);
result = FALSE; */
}
/* Fall through. */
case Tag_ABI_FP_denormal:
case Tag_ABI_PCS_GOT_use:
/* Use the "greatest" from the sequence 0, 2, 1, or the largest
value if greater than 2 (for future-proofing). */
if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i)
|| (in_attr[i].i <= 2 && out_attr[i].i <= 2
&& order_021[in_attr[i].i] > order_021[out_attr[i].i]))
out_attr[i].i = in_attr[i].i;
break;
case Tag_Virtualization_use:
/* The virtualization tag effectively stores two bits of
information: the intended use of TrustZone (in bit 0), and the
intended use of Virtualization (in bit 1). */
if (out_attr[i].i == 0)
out_attr[i].i = in_attr[i].i;
else if (in_attr[i].i != 0
&& in_attr[i].i != out_attr[i].i)
{
if (in_attr[i].i <= 3 && out_attr[i].i <= 3)
out_attr[i].i = 3;
else
{
_bfd_error_handler
(_("error: %B: unable to merge virtualization attributes "
"with %B"),
obfd, ibfd);
result = FALSE;
}
}
break;
case Tag_CPU_arch_profile:
if (out_attr[i].i != in_attr[i].i)
{
/* 0 will merge with anything.
'A' and 'S' merge to 'A'.
'R' and 'S' merge to 'R'.
'M' and 'A|R|S' is an error. */
if (out_attr[i].i == 0
|| (out_attr[i].i == 'S'
&& (in_attr[i].i == 'A' || in_attr[i].i == 'R')))
out_attr[i].i = in_attr[i].i;
else if (in_attr[i].i == 0
|| (in_attr[i].i == 'S'
&& (out_attr[i].i == 'A' || out_attr[i].i == 'R')))
; /* Do nothing. */
else
{
_bfd_error_handler
(_("error: %B: Conflicting architecture profiles %c/%c"),
ibfd,
in_attr[i].i ? in_attr[i].i : '0',
out_attr[i].i ? out_attr[i].i : '0');
result = FALSE;
}
}
break;
case Tag_FP_arch:
{
/* Tag_ABI_HardFP_use is handled along with Tag_FP_arch since
the meaning of Tag_ABI_HardFP_use depends on Tag_FP_arch
when it's 0. It might mean absence of FP hardware if
Tag_FP_arch is zero, otherwise it is effectively SP + DP. */
static const struct
{
int ver;
int regs;
} vfp_versions[7] =
{
{0, 0},
{1, 16},
{2, 16},
{3, 32},
{3, 16},
{4, 32},
{4, 16}
};
int ver;
int regs;
int newval;
/* If the output has no requirement about FP hardware,
follow the requirement of the input. */
if (out_attr[i].i == 0)
{
BFD_ASSERT (out_attr[Tag_ABI_HardFP_use].i == 0);
out_attr[i].i = in_attr[i].i;
out_attr[Tag_ABI_HardFP_use].i
= in_attr[Tag_ABI_HardFP_use].i;
break;
}
/* If the input has no requirement about FP hardware, do
nothing. */
else if (in_attr[i].i == 0)
{
BFD_ASSERT (in_attr[Tag_ABI_HardFP_use].i == 0);
break;
}
/* Both the input and the output have nonzero Tag_FP_arch.
So Tag_ABI_HardFP_use is (SP & DP) when it's zero. */
/* If both the input and the output have zero Tag_ABI_HardFP_use,
do nothing. */
if (in_attr[Tag_ABI_HardFP_use].i == 0
&& out_attr[Tag_ABI_HardFP_use].i == 0)
;
/* If the input and the output have different Tag_ABI_HardFP_use,
the combination of them is 3 (SP & DP). */
else if (in_attr[Tag_ABI_HardFP_use].i
!= out_attr[Tag_ABI_HardFP_use].i)
out_attr[Tag_ABI_HardFP_use].i = 3;
/* Now we can handle Tag_FP_arch. */
/* Values greater than 6 aren't defined, so just pick the
biggest */
if (in_attr[i].i > 6 && in_attr[i].i > out_attr[i].i)
{
out_attr[i] = in_attr[i];
break;
}
/* The output uses the superset of input features
(ISA version) and registers. */
ver = vfp_versions[in_attr[i].i].ver;
if (ver < vfp_versions[out_attr[i].i].ver)
ver = vfp_versions[out_attr[i].i].ver;
regs = vfp_versions[in_attr[i].i].regs;
if (regs < vfp_versions[out_attr[i].i].regs)
regs = vfp_versions[out_attr[i].i].regs;
/* This assumes all possible supersets are also a valid
options. */
for (newval = 6; newval > 0; newval--)
{
if (regs == vfp_versions[newval].regs
&& ver == vfp_versions[newval].ver)
break;
}
out_attr[i].i = newval;
}
break;
case Tag_PCS_config:
if (out_attr[i].i == 0)
out_attr[i].i = in_attr[i].i;
else if (in_attr[i].i != 0 && out_attr[i].i != 0)
{
/* It's sometimes ok to mix different configs, so this is only
a warning. */
_bfd_error_handler
(_("Warning: %B: Conflicting platform configuration"), ibfd);
}
break;
case Tag_ABI_PCS_R9_use:
if (in_attr[i].i != out_attr[i].i
&& out_attr[i].i != AEABI_R9_unused
&& in_attr[i].i != AEABI_R9_unused)
{
_bfd_error_handler
(_("error: %B: Conflicting use of R9"), ibfd);
result = FALSE;
}
if (out_attr[i].i == AEABI_R9_unused)
out_attr[i].i = in_attr[i].i;
break;
case Tag_ABI_PCS_RW_data:
if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
&& out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
&& out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
{
_bfd_error_handler
(_("error: %B: SB relative addressing conflicts with use of R9"),
ibfd);
result = FALSE;
}
/* Use the smallest value specified. */
if (in_attr[i].i < out_attr[i].i)
out_attr[i].i = in_attr[i].i;
break;
case Tag_ABI_PCS_wchar_t:
if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
&& !elf_arm_tdata (obfd)->no_wchar_size_warning)
{
_bfd_error_handler
(_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
ibfd, in_attr[i].i, out_attr[i].i);
}
else if (in_attr[i].i && !out_attr[i].i)
out_attr[i].i = in_attr[i].i;
break;
case Tag_ABI_enum_size:
if (in_attr[i].i != AEABI_enum_unused)
{
if (out_attr[i].i == AEABI_enum_unused
|| out_attr[i].i == AEABI_enum_forced_wide)
{
/* The existing object is compatible with anything.
Use whatever requirements the new object has. */
out_attr[i].i = in_attr[i].i;
}
else if (in_attr[i].i != AEABI_enum_forced_wide
&& out_attr[i].i != in_attr[i].i
&& !elf_arm_tdata (obfd)->no_enum_size_warning)
{
static const char *aeabi_enum_names[] =
{ "", "variable-size", "32-bit", "" };
const char *in_name =
in_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
? aeabi_enum_names[in_attr[i].i]
: "<unknown>";
const char *out_name =
out_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
? aeabi_enum_names[out_attr[i].i]
: "<unknown>";
_bfd_error_handler
(_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
ibfd, in_name, out_name);
}
}
break;
case Tag_ABI_VFP_args:
/* Aready done. */
break;
case Tag_ABI_WMMX_args:
if (in_attr[i].i != out_attr[i].i)
{
_bfd_error_handler
(_("error: %B uses iWMMXt register arguments, %B does not"),
ibfd, obfd);
result = FALSE;
}
break;
case Tag_compatibility:
/* Merged in target-independent code. */
break;
case Tag_ABI_HardFP_use:
/* This is handled along with Tag_FP_arch. */
break;
case Tag_ABI_FP_16bit_format:
if (in_attr[i].i != 0 && out_attr[i].i != 0)
{
if (in_attr[i].i != out_attr[i].i)
{
_bfd_error_handler
(_("error: fp16 format mismatch between %B and %B"),
ibfd, obfd);
result = FALSE;
}
}
if (in_attr[i].i != 0)
out_attr[i].i = in_attr[i].i;
break;
case Tag_DIV_use:
/* This tag is set to zero if we can use UDIV and SDIV in Thumb
mode on a v7-M or v7-R CPU; to one if we can not use UDIV or
SDIV at all; and to two if we can use UDIV or SDIV on a v7-A
CPU. We will merge as follows: If the input attribute's value
is one then the output attribute's value remains unchanged. If
the input attribute's value is zero or two then if the output
attribute's value is one the output value is set to the input
value, otherwise the output value must be the same as the
inputs. */
if (in_attr[i].i != 1 && out_attr[i].i != 1)
{
if (in_attr[i].i != out_attr[i].i)
{
_bfd_error_handler
(_("DIV usage mismatch between %B and %B"),
ibfd, obfd);
result = FALSE;
}
}
if (in_attr[i].i != 1)
out_attr[i].i = in_attr[i].i;
break;
case Tag_MPextension_use_legacy:
/* We don't output objects with Tag_MPextension_use_legacy - we
move the value to Tag_MPextension_use. */
if (in_attr[i].i != 0 && in_attr[Tag_MPextension_use].i != 0)
{
if (in_attr[Tag_MPextension_use].i != in_attr[i].i)
{
_bfd_error_handler
(_("%B has has both the current and legacy "
"Tag_MPextension_use attributes"),
ibfd);
result = FALSE;
}
}
if (in_attr[i].i > out_attr[Tag_MPextension_use].i)
out_attr[Tag_MPextension_use] = in_attr[i];
break;
case Tag_nodefaults:
/* This tag is set if it exists, but the value is unused (and is
typically zero). We don't actually need to do anything here -
the merge happens automatically when the type flags are merged
below. */
break;
case Tag_also_compatible_with:
/* Already done in Tag_CPU_arch. */
break;
case Tag_conformance:
/* Keep the attribute if it matches. Throw it away otherwise.
No attribute means no claim to conform. */
if (!in_attr[i].s || !out_attr[i].s
|| strcmp (in_attr[i].s, out_attr[i].s) != 0)
out_attr[i].s = NULL;
break;
default:
result
= result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
}
/* If out_attr was copied from in_attr then it won't have a type yet. */
if (in_attr[i].type && !out_attr[i].type)
out_attr[i].type = in_attr[i].type;
}
/* Merge Tag_compatibility attributes and any common GNU ones. */
if (!_bfd_elf_merge_object_attributes (ibfd, obfd))
return FALSE;
/* Check for any attributes not known on ARM. */
result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
return result;
}
/* Return TRUE if the two EABI versions are incompatible. */
static bfd_boolean
elf32_arm_versions_compatible (unsigned iver, unsigned over)
{
/* v4 and v5 are the same spec before and after it was released,
so allow mixing them. */
if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
|| (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
return TRUE;
return (iver == over);
}
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd);
/* Display the flags field. */
static bfd_boolean
elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
{
FILE * file = (FILE *) ptr;
unsigned long flags;
BFD_ASSERT (abfd != NULL && ptr != NULL);
/* Print normal ELF private data. */
_bfd_elf_print_private_bfd_data (abfd, ptr);
flags = elf_elfheader (abfd)->e_flags;
/* Ignore init flag - it may not be set, despite the flags field
containing valid data. */
/* xgettext:c-format */
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
switch (EF_ARM_EABI_VERSION (flags))
{
case EF_ARM_EABI_UNKNOWN:
/* The following flag bits are GNU extensions and not part of the
official ARM ELF extended ABI. Hence they are only decoded if
the EABI version is not set. */
if (flags & EF_ARM_INTERWORK)
fprintf (file, _(" [interworking enabled]"));
if (flags & EF_ARM_APCS_26)
fprintf (file, " [APCS-26]");
else
fprintf (file, " [APCS-32]");
if (flags & EF_ARM_VFP_FLOAT)
fprintf (file, _(" [VFP float format]"));
else if (flags & EF_ARM_MAVERICK_FLOAT)
fprintf (file, _(" [Maverick float format]"));
else
fprintf (file, _(" [FPA float format]"));
if (flags & EF_ARM_APCS_FLOAT)
fprintf (file, _(" [floats passed in float registers]"));
if (flags & EF_ARM_PIC)
fprintf (file, _(" [position independent]"));
if (flags & EF_ARM_NEW_ABI)
fprintf (file, _(" [new ABI]"));
if (flags & EF_ARM_OLD_ABI)
fprintf (file, _(" [old ABI]"));
if (flags & EF_ARM_SOFT_FLOAT)
fprintf (file, _(" [software FP]"));
flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
| EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
| EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
| EF_ARM_MAVERICK_FLOAT);
break;
case EF_ARM_EABI_VER1:
fprintf (file, _(" [Version1 EABI]"));
if (flags & EF_ARM_SYMSARESORTED)
fprintf (file, _(" [sorted symbol table]"));
else
fprintf (file, _(" [unsorted symbol table]"));
flags &= ~ EF_ARM_SYMSARESORTED;
break;
case EF_ARM_EABI_VER2:
fprintf (file, _(" [Version2 EABI]"));
if (flags & EF_ARM_SYMSARESORTED)
fprintf (file, _(" [sorted symbol table]"));
else
fprintf (file, _(" [unsorted symbol table]"));
if (flags & EF_ARM_DYNSYMSUSESEGIDX)
fprintf (file, _(" [dynamic symbols use segment index]"));
if (flags & EF_ARM_MAPSYMSFIRST)
fprintf (file, _(" [mapping symbols precede others]"));
flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
| EF_ARM_MAPSYMSFIRST);
break;
case EF_ARM_EABI_VER3:
fprintf (file, _(" [Version3 EABI]"));
break;
case EF_ARM_EABI_VER4:
fprintf (file, _(" [Version4 EABI]"));
goto eabi;
case EF_ARM_EABI_VER5:
fprintf (file, _(" [Version5 EABI]"));
eabi:
if (flags & EF_ARM_BE8)
fprintf (file, _(" [BE8]"));
if (flags & EF_ARM_LE8)
fprintf (file, _(" [LE8]"));
flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
break;
default:
fprintf (file, _(" <EABI version unrecognised>"));
break;
}
flags &= ~ EF_ARM_EABIMASK;
if (flags & EF_ARM_RELEXEC)
fprintf (file, _(" [relocatable executable]"));
if (flags & EF_ARM_HASENTRY)
fprintf (file, _(" [has entry point]"));
flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
if (flags)
fprintf (file, _("<Unrecognised flag bits set>"));
fputc ('\n', file);
return TRUE;
}
static int
elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
{
switch (ELF_ST_TYPE (elf_sym->st_info))
{
case STT_ARM_TFUNC:
return ELF_ST_TYPE (elf_sym->st_info);
case STT_ARM_16BIT:
/* If the symbol is not an object, return the STT_ARM_16BIT flag.
This allows us to distinguish between data used by Thumb instructions
and non-data (which is probably code) inside Thumb regions of an
executable. */
if (type != STT_OBJECT && type != STT_TLS)
return ELF_ST_TYPE (elf_sym->st_info);
break;
default:
break;
}
return type;
}
static asection *
elf32_arm_gc_mark_hook (asection *sec,
struct bfd_link_info *info,
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_ARM_GNU_VTINHERIT:
case R_ARM_GNU_VTENTRY:
return NULL;
}
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
/* Update the got entry reference counts for the section being removed. */
static bfd_boolean
elf32_arm_gc_sweep_hook (bfd * abfd,
struct bfd_link_info * info,
asection * sec,
const Elf_Internal_Rela * relocs)
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
struct elf32_arm_link_hash_table * globals;
if (info->relocatable)
return TRUE;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return FALSE;
elf_section_data (sec)->local_dynrel = NULL;
symtab_hdr = & elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
local_got_refcounts = elf_local_got_refcounts (abfd);
check_use_blx (globals);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
{
unsigned long r_symndx;
struct elf_link_hash_entry *h = NULL;
struct elf32_arm_link_hash_entry *eh;
int r_type;
bfd_boolean call_reloc_p;
bfd_boolean may_become_dynamic_p;
bfd_boolean may_need_local_target_p;
union gotplt_union *root_plt;
struct arm_plt_info *arm_plt;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
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 elf32_arm_link_hash_entry *) h;
call_reloc_p = FALSE;
may_become_dynamic_p = FALSE;
may_need_local_target_p = FALSE;
r_type = ELF32_R_TYPE (rel->r_info);
r_type = arm_real_reloc_type (globals, r_type);
switch (r_type)
{
case R_ARM_GOT32:
case R_ARM_GOT_PREL:
case R_ARM_TLS_GD32:
case R_ARM_TLS_IE32:
if (h != NULL)
{
if (h->got.refcount > 0)
h->got.refcount -= 1;
}
else if (local_got_refcounts != NULL)
{
if (local_got_refcounts[r_symndx] > 0)
local_got_refcounts[r_symndx] -= 1;
}
break;
case R_ARM_TLS_LDM32:
globals->tls_ldm_got.refcount -= 1;
break;
case R_ARM_PC24:
case R_ARM_PLT32:
case R_ARM_CALL:
case R_ARM_JUMP24:
case R_ARM_PREL31:
case R_ARM_THM_CALL:
case R_ARM_THM_JUMP24:
case R_ARM_THM_JUMP19:
call_reloc_p = TRUE;
may_need_local_target_p = TRUE;
break;
case R_ARM_ABS12:
if (!globals->vxworks_p)
{
may_need_local_target_p = TRUE;
break;
}
/* Fall through. */
case R_ARM_ABS32:
case R_ARM_ABS32_NOI:
case R_ARM_REL32:
case R_ARM_REL32_NOI:
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
case R_ARM_MOVW_PREL_NC:
case R_ARM_MOVT_PREL:
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
case R_ARM_THM_MOVW_PREL_NC:
case R_ARM_THM_MOVT_PREL:
/* Should the interworking branches be here also? */
if ((info->shared || globals->root.is_relocatable_executable)
&& (sec->flags & SEC_ALLOC) != 0)
{
if (h == NULL
&& (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI))
{
call_reloc_p = TRUE;
may_need_local_target_p = TRUE;
}
else
may_become_dynamic_p = TRUE;
}
else
may_need_local_target_p = TRUE;
break;
default:
break;
}
if (may_need_local_target_p
&& elf32_arm_get_plt_info (abfd, eh, r_symndx, &root_plt, &arm_plt))
{
BFD_ASSERT (root_plt->refcount > 0);
root_plt->refcount -= 1;
if (!call_reloc_p)
arm_plt->noncall_refcount--;
if (r_type == R_ARM_THM_CALL)
arm_plt->maybe_thumb_refcount--;
if (r_type == R_ARM_THM_JUMP24
|| r_type == R_ARM_THM_JUMP19)
arm_plt->thumb_refcount--;
}
if (may_become_dynamic_p)
{
struct elf_dyn_relocs **pp;
struct elf_dyn_relocs *p;
if (h != NULL)
pp = &(eh->dyn_relocs);
else
{
Elf_Internal_Sym *isym;
isym = bfd_sym_from_r_symndx (&globals->sym_cache,
abfd, r_symndx);
if (isym == NULL)
return FALSE;
pp = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym);
if (pp == NULL)
return FALSE;
}
for (; (p = *pp) != NULL; pp = &p->next)
if (p->sec == sec)
{
/* Everything must go for SEC. */
*pp = p->next;
break;
}
}
}
return TRUE;
}
/* Look through the relocs for a section during the first phase. */
static bfd_boolean
elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
asection *sec, const Elf_Internal_Rela *relocs)
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
bfd *dynobj;
asection *sreloc;
struct elf32_arm_link_hash_table *htab;
bfd_boolean call_reloc_p;
bfd_boolean may_become_dynamic_p;
bfd_boolean may_need_local_target_p;
unsigned long nsyms;
if (info->relocatable)
return TRUE;
BFD_ASSERT (is_arm_elf (abfd));
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
sreloc = NULL;
/* Create dynamic sections for relocatable executables so that we can
copy relocations. */
if (htab->root.is_relocatable_executable
&& ! htab->root.dynamic_sections_created)
{
if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
return FALSE;
}
if (htab->root.dynobj == NULL)
htab->root.dynobj = abfd;
if (!create_ifunc_sections (info))
return FALSE;
dynobj = htab->root.dynobj;
symtab_hdr = & elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
nsyms = NUM_SHDR_ENTRIES (symtab_hdr);
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
Elf_Internal_Sym *isym;
struct elf_link_hash_entry *h;
struct elf32_arm_link_hash_entry *eh;
unsigned long r_symndx;
int r_type;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
r_type = arm_real_reloc_type (htab, r_type);
if (r_symndx >= nsyms
/* PR 9934: It is possible to have relocations that do not
refer to symbols, thus it is also possible to have an
object file containing relocations but no symbol table. */
&& (r_symndx > STN_UNDEF || nsyms > 0))
{
(*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
r_symndx);
return FALSE;
}
h = NULL;
isym = NULL;
if (nsyms > 0)
{
if (r_symndx < symtab_hdr->sh_info)
{
/* A local symbol. */
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
abfd, r_symndx);
if (isym == NULL)
return FALSE;
}
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;
}
}
eh = (struct elf32_arm_link_hash_entry *) h;
call_reloc_p = FALSE;
may_become_dynamic_p = FALSE;
may_need_local_target_p = FALSE;
/* Could be done earlier, if h were already available. */
r_type = elf32_arm_tls_transition (info, r_type, h);
switch (r_type)
{
case R_ARM_GOT32:
case R_ARM_GOT_PREL:
case R_ARM_TLS_GD32:
case R_ARM_TLS_IE32:
case R_ARM_TLS_GOTDESC:
case R_ARM_TLS_DESCSEQ:
case R_ARM_THM_TLS_DESCSEQ:
case R_ARM_TLS_CALL:
case R_ARM_THM_TLS_CALL:
/* This symbol requires a global offset table entry. */
{
int tls_type, old_tls_type;
switch (r_type)
{
case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
case R_ARM_TLS_GOTDESC:
case R_ARM_TLS_CALL: case R_ARM_THM_TLS_CALL:
case R_ARM_TLS_DESCSEQ: case R_ARM_THM_TLS_DESCSEQ:
tls_type = GOT_TLS_GDESC; break;
default: tls_type = GOT_NORMAL; break;
}
if (h != NULL)
{
h->got.refcount++;
old_tls_type = elf32_arm_hash_entry (h)->tls_type;
}
else
{
/* This is a global offset table entry for a local symbol. */
if (!elf32_arm_allocate_local_sym_info (abfd))
return FALSE;
elf_local_got_refcounts (abfd)[r_symndx] += 1;
old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
}
/* If a variable is accessed with both tls methods, two
slots may be created. */
if (GOT_TLS_GD_ANY_P (old_tls_type)
&& GOT_TLS_GD_ANY_P (tls_type))
tls_type |= old_tls_type;
/* We will already have issued an error message if there
is a TLS/non-TLS mismatch, based on the symbol
type. So just combine any TLS types needed. */
if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
&& tls_type != GOT_NORMAL)
tls_type |= old_tls_type;
/* If the symbol is accessed in both IE and GDESC
method, we're able to relax. Turn off the GDESC flag,
without messing up with any other kind of tls types
that may be involved */
if ((tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_GDESC))
tls_type &= ~GOT_TLS_GDESC;
if (old_tls_type != tls_type)
{
if (h != NULL)
elf32_arm_hash_entry (h)->tls_type = tls_type;
else
elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
/* Fall through. */
case R_ARM_TLS_LDM32:
if (r_type == R_ARM_TLS_LDM32)
htab->tls_ldm_got.refcount++;
/* Fall through. */
case R_ARM_GOTOFF32:
case R_ARM_GOTPC:
if (htab->root.sgot == NULL
&& !create_got_section (htab->root.dynobj, info))
return FALSE;
break;
case R_ARM_PC24:
case R_ARM_PLT32:
case R_ARM_CALL:
case R_ARM_JUMP24:
case R_ARM_PREL31:
case R_ARM_THM_CALL:
case R_ARM_THM_JUMP24:
case R_ARM_THM_JUMP19:
call_reloc_p = TRUE;
may_need_local_target_p = TRUE;
break;
case R_ARM_ABS12:
/* VxWorks uses dynamic R_ARM_ABS12 relocations for
ldr __GOTT_INDEX__ offsets. */
if (!htab->vxworks_p)
{
may_need_local_target_p = TRUE;
break;
}
/* Fall through. */
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
if (info->shared)
{
(*_bfd_error_handler)
(_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
abfd, elf32_arm_howto_table_1[r_type].name,
(h) ? h->root.root.string : "a local symbol");
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
/* Fall through. */
case R_ARM_ABS32:
case R_ARM_ABS32_NOI:
case R_ARM_REL32:
case R_ARM_REL32_NOI:
case R_ARM_MOVW_PREL_NC:
case R_ARM_MOVT_PREL:
case R_ARM_THM_MOVW_PREL_NC:
case R_ARM_THM_MOVT_PREL:
/* Should the interworking branches be listed here? */
if ((info->shared || htab->root.is_relocatable_executable)
&& (sec->flags & SEC_ALLOC) != 0)
{
if (h == NULL
&& (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI))
{
/* In shared libraries and relocatable executables,
we treat local relative references as calls;
see the related SYMBOL_CALLS_LOCAL code in
allocate_dynrelocs. */
call_reloc_p = TRUE;
may_need_local_target_p = TRUE;
}
else
/* We are creating a shared library or relocatable
executable, and this is a reloc against a global symbol,
or a non-PC-relative reloc against a local symbol.
We may need to copy the reloc into the output. */
may_become_dynamic_p = TRUE;
}
else
may_need_local_target_p = TRUE;
break;
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_ARM_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_ARM_GNU_VTENTRY:
BFD_ASSERT (h != NULL);
if (h != NULL
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
return FALSE;
break;
}
if (h != NULL)
{
if (call_reloc_p)
/* We may need a .plt entry if the function this reloc
refers to is in a different object, regardless of the
symbol's type. We can't tell for sure yet, because
something later might force the symbol local. */
h->needs_plt = 1;
else if (may_need_local_target_p)
/* If this reloc is in a read-only section, we might
need a copy reloc. We can't check reliably at this
stage whether the section is read-only, as input
sections have not yet been mapped to output sections.
Tentatively set the flag for now, and correct in
adjust_dynamic_symbol. */
h->non_got_ref = 1;
}
if (may_need_local_target_p
&& (h != NULL || ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC))
{
union gotplt_union *root_plt;
struct arm_plt_info *arm_plt;
struct arm_local_iplt_info *local_iplt;
if (h != NULL)
{
root_plt = &h->plt;
arm_plt = &eh->plt;
}
else
{
local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx);
if (local_iplt == NULL)
return FALSE;
root_plt = &local_iplt->root;
arm_plt = &local_iplt->arm;
}
/* If the symbol is a function that doesn't bind locally,
this relocation will need a PLT entry. */
root_plt->refcount += 1;
if (!call_reloc_p)
arm_plt->noncall_refcount++;
/* It's too early to use htab->use_blx here, so we have to
record possible blx references separately from
relocs that definitely need a thumb stub. */
if (r_type == R_ARM_THM_CALL)
arm_plt->maybe_thumb_refcount += 1;
if (r_type == R_ARM_THM_JUMP24
|| r_type == R_ARM_THM_JUMP19)
arm_plt->thumb_refcount += 1;
}
if (may_become_dynamic_p)
{
struct elf_dyn_relocs *p, **head;
/* Create a reloc section in dynobj. */
if (sreloc == NULL)
{
sreloc = _bfd_elf_make_dynamic_reloc_section
(sec, dynobj, 2, abfd, ! htab->use_rel);
if (sreloc == NULL)
return FALSE;
/* BPABI objects never have dynamic relocations mapped. */
if (htab->symbian_p)
{
flagword flags;
flags = bfd_get_section_flags (dynobj, sreloc);
flags &= ~(SEC_LOAD | SEC_ALLOC);
bfd_set_section_flags (dynobj, sreloc, flags);
}
}
/* If this is a global symbol, count the number of
relocations we need for this symbol. */
if (h != NULL)
head = &((struct elf32_arm_link_hash_entry *) h)->dyn_relocs;
else
{
head = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym);
if (head == NULL)
return FALSE;
}
p = *head;
if (p == NULL || p->sec != sec)
{
bfd_size_type amt = sizeof *p;
p = (struct elf_dyn_relocs *) bfd_alloc (htab->root.dynobj, amt);
if (p == NULL)
return FALSE;
p->next = *head;
*head = p;
p->sec = sec;
p->count = 0;
p->pc_count = 0;
}
if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
p->pc_count += 1;
p->count += 1;
}
}
return TRUE;
}
/* Unwinding tables are not referenced directly. This pass marks them as
required if the corresponding code section is marked. */
static bfd_boolean
elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
elf_gc_mark_hook_fn gc_mark_hook)
{
bfd *sub;
Elf_Internal_Shdr **elf_shdrp;
bfd_boolean again;
/* Marking EH data may cause additional code sections to be marked,
requiring multiple passes. */
again = TRUE;
while (again)
{
again = FALSE;
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
{
asection *o;
if (! is_arm_elf (sub))
continue;
elf_shdrp = elf_elfsections (sub);
for (o = sub->sections; o != NULL; o = o->next)
{
Elf_Internal_Shdr *hdr;
hdr = &elf_section_data (o)->this_hdr;
if (hdr->sh_type == SHT_ARM_EXIDX
&& hdr->sh_link
&& hdr->sh_link < elf_numsections (sub)
&& !o->gc_mark
&& elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
{
again = TRUE;
if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
return FALSE;
}
}
}
}
return TRUE;
}
/* Treat mapping symbols as special target symbols. */
static bfd_boolean
elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
{
return bfd_is_arm_special_symbol_name (sym->name,
BFD_ARM_SPECIAL_SYM_TYPE_ANY);
}
/* This is a copy of elf_find_function() from elf.c except that
ARM mapping symbols are ignored when looking for function names
and STT_ARM_TFUNC is considered to a function type. */
static bfd_boolean
arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
asection * section,
asymbol ** symbols,
bfd_vma offset,
const char ** filename_ptr,
const char ** functionname_ptr)
{
const char * filename = NULL;
asymbol * func = NULL;
bfd_vma low_func = 0;
asymbol ** p;
for (p = symbols; *p != NULL; p++)
{
elf_symbol_type *q;
q = (elf_symbol_type *) *p;
switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
{
default:
break;
case STT_FILE:
filename = bfd_asymbol_name (&q->symbol);
break;
case STT_FUNC:
case STT_ARM_TFUNC:
case STT_NOTYPE:
/* Skip mapping symbols. */
if ((q->symbol.flags & BSF_LOCAL)
&& bfd_is_arm_special_symbol_name (q->symbol.name,
BFD_ARM_SPECIAL_SYM_TYPE_ANY))
continue;
/* Fall through. */
if (bfd_get_section (&q->symbol) == section
&& q->symbol.value >= low_func
&& q->symbol.value <= offset)
{
func = (asymbol *) q;
low_func = q->symbol.value;
}
break;
}
}
if (func == NULL)
return FALSE;
if (filename_ptr)
*filename_ptr = filename;
if (functionname_ptr)
*functionname_ptr = bfd_asymbol_name (func);
return TRUE;
}
/* Find the nearest line to a particular section and offset, for error
reporting. This code is a duplicate of the code in elf.c, except
that it uses arm_elf_find_function. */
static bfd_boolean
elf32_arm_find_nearest_line (bfd * abfd,
asection * section,
asymbol ** symbols,
bfd_vma offset,
const char ** filename_ptr,
const char ** functionname_ptr,
unsigned int * line_ptr)
{
bfd_boolean found = FALSE;
/* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr, 0,
& elf_tdata (abfd)->dwarf2_find_line_info))
{
if (!*functionname_ptr)
arm_elf_find_function (abfd, section, symbols, offset,
*filename_ptr ? NULL : filename_ptr,
functionname_ptr);
return TRUE;
}
if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
& found, filename_ptr,
functionname_ptr, line_ptr,
& elf_tdata (abfd)->line_info))
return FALSE;
if (found && (*functionname_ptr || *line_ptr))
return TRUE;
if (symbols == NULL)
return FALSE;
if (! arm_elf_find_function (abfd, section, symbols, offset,
filename_ptr, functionname_ptr))
return FALSE;
*line_ptr = 0;
return TRUE;
}
static bfd_boolean
elf32_arm_find_inliner_info (bfd * abfd,
const char ** filename_ptr,
const char ** functionname_ptr,
unsigned int * line_ptr)
{
bfd_boolean found;
found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
functionname_ptr, line_ptr,
& elf_tdata (abfd)->dwarf2_find_line_info);
return found;
}
/* 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
elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
struct elf_link_hash_entry * h)
{
bfd * dynobj;
asection * s;
struct elf32_arm_link_hash_entry * eh;
struct elf32_arm_link_hash_table *globals;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return FALSE;
dynobj = elf_hash_table (info)->dynobj;
/* Make sure we know what is going on here. */
BFD_ASSERT (dynobj != NULL
&& (h->needs_plt
|| h->type == STT_GNU_IFUNC
|| h->u.weakdef != NULL
|| (h->def_dynamic
&& h->ref_regular
&& !h->def_regular)));
eh = (struct elf32_arm_link_hash_entry *) h;
/* If this is a function, put it in the procedure linkage table. We
will fill in the contents of the procedure linkage table later,
when we know the address of the .got section. */
if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
{
/* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the
symbol binds locally. */
if (h->plt.refcount <= 0
|| (h->type != STT_GNU_IFUNC
&& (SYMBOL_CALLS_LOCAL (info, h)
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak))))
{
/* This case can occur if we saw a PLT32 reloc in an input
file, but the symbol was never referred to by a dynamic
object, or if all references were garbage collected. In
such a case, we don't actually need to build a procedure
linkage table, and we can just do a PC24 reloc instead. */
h->plt.offset = (bfd_vma) -1;
eh->plt.thumb_refcount = 0;
eh->plt.maybe_thumb_refcount = 0;
eh->plt.noncall_refcount = 0;
h->needs_plt = 0;
}
return TRUE;
}
else
{
/* It's possible that we incorrectly decided a .plt reloc was
needed for an R_ARM_PC24 or similar reloc to a non-function sym
in check_relocs. We can't decide accurately between function
and non-function syms in check-relocs; Objects loaded later in
the link may change h->type. So fix it now. */
h->plt.offset = (bfd_vma) -1;
eh->plt.thumb_refcount = 0;
eh->plt.maybe_thumb_refcount = 0;
eh->plt.noncall_refcount = 0;
}
/* 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;
return TRUE;
}
/* If there are no non-GOT references, we do not need a copy
relocation. */
if (!h->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. Relocatable executables
can reference data in shared objects directly, so we don't need to
do anything here. */
if (info->shared || globals->root.is_relocatable_executable)
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. */
s = bfd_get_section_by_name (dynobj, ".dynbss");
BFD_ASSERT (s != NULL);
/* We must generate a R_ARM_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
.rel(a).bss section we are going to use. */
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
asection *srel;
srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
elf32_arm_allocate_dynrelocs (info, srel, 1);
h->needs_copy = 1;
}
return _bfd_elf_adjust_dynamic_copy (h, s);
}
/* Allocate space in .plt, .got and associated reloc sections for
dynamic relocs. */
static bfd_boolean
allocate_dynrelocs_for_symbol (struct elf_link_hash_entry *h, void * inf)
{
struct bfd_link_info *info;
struct elf32_arm_link_hash_table *htab;
struct elf32_arm_link_hash_entry *eh;
struct elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
eh = (struct elf32_arm_link_hash_entry *) h;
info = (struct bfd_link_info *) inf;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
if ((htab->root.dynamic_sections_created || h->type == STT_GNU_IFUNC)
&& h->plt.refcount > 0)
{
/* 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 the call in the PLT entry binds locally, the associated
GOT entry should use an R_ARM_IRELATIVE relocation instead of
the usual R_ARM_JUMP_SLOT. Put it in the .iplt section rather
than the .plt section. */
if (h->type == STT_GNU_IFUNC && SYMBOL_CALLS_LOCAL (info, h))
{
eh->is_iplt = 1;
if (eh->plt.noncall_refcount == 0
&& SYMBOL_REFERENCES_LOCAL (info, h))
/* All non-call references can be resolved directly.
This means that they can (and in some cases, must)
resolve directly to the run-time target, rather than
to the PLT. That in turns means that any .got entry
would be equal to the .igot.plt entry, so there's
no point having both. */
h->got.refcount = 0;
}
if (info->shared
|| eh->is_iplt
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
elf32_arm_allocate_plt_entry (info, eh->is_iplt, &h->plt, &eh->plt);
/* 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 = htab->root.splt;
h->root.u.def.value = h->plt.offset;
/* Make sure the function is not marked as Thumb, in case
it is the target of an ABS32 relocation, which will
point to the PLT entry. */
h->target_internal = ST_BRANCH_TO_ARM;
}
htab->next_tls_desc_index++;
/* VxWorks executables have a second set of relocations for
each PLT entry. They go in a separate relocation section,
which is processed by the kernel loader. */
if (htab->vxworks_p && !info->shared)
{
/* There is a relocation for the initial PLT entry:
an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
if (h->plt.offset == htab->plt_header_size)
elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 1);
/* There are two extra relocations for each subsequent
PLT entry: an R_ARM_32 relocation for the GOT entry,
and an R_ARM_32 relocation for the PLT entry. */
elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 2);
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
eh = (struct elf32_arm_link_hash_entry *) h;
eh->tlsdesc_got = (bfd_vma) -1;
if (h->got.refcount > 0)
{
asection *s;
bfd_boolean dyn;
int tls_type = elf32_arm_hash_entry (h)->tls_type;
int indx;
/* 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 (!htab->symbian_p)
{
s = htab->root.sgot;
h->got.offset = s->size;
if (tls_type == GOT_UNKNOWN)
abort ();
if (tls_type == GOT_NORMAL)
/* Non-TLS symbols need one GOT slot. */
s->size += 4;
else
{
if (tls_type & GOT_TLS_GDESC)
{
/* R_ARM_TLS_DESC needs 2 GOT slots. */
eh->tlsdesc_got
= (htab->root.sgotplt->size
- elf32_arm_compute_jump_table_size (htab));
htab->root.sgotplt->size += 8;
h->got.offset = (bfd_vma) -2;
/* plt.got_offset needs to know there's a TLS_DESC
reloc in the middle of .got.plt. */
htab->num_tls_desc++;
}
if (tls_type & GOT_TLS_GD)
{
/* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. If
the symbol is both GD and GDESC, got.offset may
have been overwritten. */
h->got.offset = s->size;
s->size += 8;
}
if (tls_type & GOT_TLS_IE)
/* R_ARM_TLS_IE32 needs one GOT slot. */
s->size += 4;
}
dyn = htab->root.dynamic_sections_created;
indx = 0;
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
&& (!info->shared
|| !SYMBOL_REFERENCES_LOCAL (info, h)))
indx = h->dynindx;
if (tls_type != GOT_NORMAL
&& (info->shared || indx != 0)
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
{
if (tls_type & GOT_TLS_IE)
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
if (tls_type & GOT_TLS_GD)
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
if (tls_type & GOT_TLS_GDESC)
{
elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1);
/* GDESC needs a trampoline to jump to. */
htab->tls_trampoline = -1;
}
/* Only GD needs it. GDESC just emits one relocation per
2 entries. */
if ((tls_type & GOT_TLS_GD) && indx != 0)
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
}
else if (!SYMBOL_REFERENCES_LOCAL (info, h))
{
if (htab->root.dynamic_sections_created)
/* Reserve room for the GOT entry's R_ARM_GLOB_DAT relocation. */
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
}
else if (h->type == STT_GNU_IFUNC
&& eh->plt.noncall_refcount == 0)
/* No non-call references resolve the STT_GNU_IFUNC's PLT entry;
they all resolve dynamically instead. Reserve room for the
GOT entry's R_ARM_IRELATIVE relocation. */
elf32_arm_allocate_irelocs (info, htab->root.srelgot, 1);
else if (info->shared)
/* Reserve room for the GOT entry's R_ARM_RELATIVE relocation. */
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
}
}
else
h->got.offset = (bfd_vma) -1;
/* Allocate stubs for exported Thumb functions on v4t. */
if (!htab->use_blx && h->dynindx != -1
&& h->def_regular
&& h->target_internal == ST_BRANCH_TO_THUMB
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
{
struct elf_link_hash_entry * th;
struct bfd_link_hash_entry * bh;
struct elf_link_hash_entry * myh;
char name[1024];
asection *s;
bh = NULL;
/* Create a new symbol to regist the real location of the function. */
s = h->root.u.def.section;
sprintf (name, "__real_%s", h->root.root.string);
_bfd_generic_link_add_one_symbol (info, s->owner,
name, BSF_GLOBAL, s,
h->root.u.def.value,
NULL, TRUE, FALSE, &bh);
myh = (struct elf_link_hash_entry *) bh;
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
myh->forced_local = 1;
myh->target_internal = ST_BRANCH_TO_THUMB;
eh->export_glue = myh;
th = record_arm_to_thumb_glue (info, h);
/* Point the symbol at the stub. */
h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
h->target_internal = ST_BRANCH_TO_ARM;
h->root.u.def.section = th->root.u.def.section;
h->root.u.def.value = th->root.u.def.value & ~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 pc-relative relocs that have become local due to symbol
visibility changes. */
if (info->shared || htab->root.is_relocatable_executable)
{
/* The only relocs that use pc_count are R_ARM_REL32 and
R_ARM_REL32_NOI, which will appear on something like
".long foo - .". 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 assembly like ".long foo - .". */
if (SYMBOL_CALLS_LOCAL (info, h))
{
struct 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;
}
}
if (htab->vxworks_p)
{
struct elf_dyn_relocs **pp;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
{
if (strcmp (p->sec->output_section->name, ".tls_vars") == 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 (htab->root.is_relocatable_executable && h->dynindx == -1
&& h->root.type == bfd_link_hash_new)
{
/* Output absolute symbols so that we can create relocations
against them. For normal symbols we output a relocation
against the section that contains them. */
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
}
else
{
/* 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)
|| (htab->root.dynamic_sections_created
&& (h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_undefined))))
{
/* 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;
if (h->type == STT_GNU_IFUNC
&& eh->plt.noncall_refcount == 0
&& SYMBOL_REFERENCES_LOCAL (info, h))
elf32_arm_allocate_irelocs (info, sreloc, p->count);
else
elf32_arm_allocate_dynrelocs (info, sreloc, p->count);
}
return TRUE;
}
/* Find any dynamic relocs that apply to read-only sections. */
static bfd_boolean
elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
{
struct elf32_arm_link_hash_entry * eh;
struct elf_dyn_relocs * p;
eh = (struct elf32_arm_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *s = p->sec;
if (s != NULL && (s->flags & SEC_READONLY) != 0)
{
struct bfd_link_info *info = (struct bfd_link_info *) inf;
info->flags |= DF_TEXTREL;
/* Not an error, just cut short the traversal. */
return FALSE;
}
}
return TRUE;
}
void
bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
int byteswap_code)
{
struct elf32_arm_link_hash_table *globals;
globals = elf32_arm_hash_table (info);
if (globals == NULL)
return;
globals->byteswap_code = byteswap_code;
}
/* Set the sizes of the dynamic sections. */
static bfd_boolean
elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info * info)
{
bfd * dynobj;
asection * s;
bfd_boolean plt;
bfd_boolean relocs;
bfd *ibfd;
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
check_use_blx (htab);
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 (dynobj, ".interp");
BFD_ASSERT (s != NULL);
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
/* 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;
struct arm_local_iplt_info **local_iplt_ptr, *local_iplt;
char *local_tls_type;
bfd_vma *local_tlsdesc_gotent;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srel;
bfd_boolean is_vxworks = htab->vxworks_p;
unsigned int symndx;
if (! is_arm_elf (ibfd))
continue;
for (s = ibfd->sections; s != NULL; s = s->next)
{
struct elf_dyn_relocs *p;
for (p = (struct 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 (is_vxworks
&& strcmp (p->sec->output_section->name,
".tls_vars") == 0)
{
/* Relocations in vxworks .tls_vars sections are
handled specially by the loader. */
}
else if (p->count != 0)
{
srel = elf_section_data (p->sec)->sreloc;
elf32_arm_allocate_dynrelocs (info, srel, p->count);
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
info->flags |= DF_TEXTREL;
}
}
}
local_got = elf_local_got_refcounts (ibfd);
if (!local_got)
continue;
symtab_hdr = & elf_symtab_hdr (ibfd);
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
local_iplt_ptr = elf32_arm_local_iplt (ibfd);
local_tls_type = elf32_arm_local_got_tls_type (ibfd);
local_tlsdesc_gotent = elf32_arm_local_tlsdesc_gotent (ibfd);
symndx = 0;
s = htab->root.sgot;
srel = htab->root.srelgot;
for (; local_got < end_local_got;
++local_got, ++local_iplt_ptr, ++local_tls_type,
++local_tlsdesc_gotent, ++symndx)
{
*local_tlsdesc_gotent = (bfd_vma) -1;
local_iplt = *local_iplt_ptr;
if (local_iplt != NULL)
{
struct elf_dyn_relocs *p;
if (local_iplt->root.refcount > 0)
{
elf32_arm_allocate_plt_entry (info, TRUE,
&local_iplt->root,
&local_iplt->arm);
if (local_iplt->arm.noncall_refcount == 0)
/* All references to the PLT are calls, so all
non-call references can resolve directly to the
run-time target. This means that the .got entry
would be the same as the .igot.plt entry, so there's
no point creating both. */
*local_got = 0;
}
else
{
BFD_ASSERT (local_iplt->arm.noncall_refcount == 0);
local_iplt->root.offset = (bfd_vma) -1;
}
for (p = local_iplt->dyn_relocs; p != NULL; p = p->next)
{
asection *psrel;
psrel = elf_section_data (p->sec)->sreloc;
if (local_iplt->arm.noncall_refcount == 0)
elf32_arm_allocate_irelocs (info, psrel, p->count);
else
elf32_arm_allocate_dynrelocs (info, psrel, p->count);
}
}
if (*local_got > 0)
{
Elf_Internal_Sym *isym;
*local_got = s->size;
if (*local_tls_type & GOT_TLS_GD)
/* TLS_GD relocs need an 8-byte structure in the GOT. */
s->size += 8;
if (*local_tls_type & GOT_TLS_GDESC)
{
*local_tlsdesc_gotent = htab->root.sgotplt->size
- elf32_arm_compute_jump_table_size (htab);
htab->root.sgotplt->size += 8;
*local_got = (bfd_vma) -2;
/* plt.got_offset needs to know there's a TLS_DESC
reloc in the middle of .got.plt. */
htab->num_tls_desc++;
}
if (*local_tls_type & GOT_TLS_IE)
s->size += 4;
if (*local_tls_type & GOT_NORMAL)
{
/* If the symbol is both GD and GDESC, *local_got
may have been overwritten. */
*local_got = s->size;
s->size += 4;
}
isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, symndx);
if (isym == NULL)
return FALSE;
/* If all references to an STT_GNU_IFUNC PLT are calls,
then all non-call references, including this GOT entry,
resolve directly to the run-time target. */
if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
&& (local_iplt == NULL
|| local_iplt->arm.noncall_refcount == 0))
elf32_arm_allocate_irelocs (info, srel, 1);
else if ((info->shared && !(*local_tls_type & GOT_TLS_GDESC))
|| *local_tls_type & GOT_TLS_GD)
elf32_arm_allocate_dynrelocs (info, srel, 1);
if (info->shared && *local_tls_type & GOT_TLS_GDESC)
{
elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1);
htab->tls_trampoline = -1;
}
}
else
*local_got = (bfd_vma) -1;
}
}
if (htab->tls_ldm_got.refcount > 0)
{
/* Allocate two GOT entries and one dynamic relocation (if necessary)
for R_ARM_TLS_LDM32 relocations. */
htab->tls_ldm_got.offset = htab->root.sgot->size;
htab->root.sgot->size += 8;
if (info->shared)
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
}
else
htab->tls_ldm_got.offset = -1;
/* Allocate global sym .plt and .got entries, and space for global
sym dynamic relocs. */
elf_link_hash_traverse (& htab->root, allocate_dynrelocs_for_symbol, info);
/* Here we rummage through the found bfds to collect glue information. */
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
if (! is_arm_elf (ibfd))
continue;
/* Initialise mapping tables for code/data. */
bfd_elf32_arm_init_maps (ibfd);
if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
|| !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
/* xgettext:c-format */
_bfd_error_handler (_("Errors encountered processing file %s"),
ibfd->filename);
}
/* Allocate space for the glue sections now that we've sized them. */
bfd_elf32_arm_allocate_interworking_sections (info);
/* For every jump slot reserved in the sgotplt, reloc_count is
incremented. However, when we reserve space for TLS descriptors,
it's not incremented, so in order to compute the space reserved
for them, it suffices to multiply the reloc count by the jump
slot size. */
if (htab->root.srelplt)
htab->sgotplt_jump_table_size = elf32_arm_compute_jump_table_size(htab);
if (htab->tls_trampoline)
{
if (htab->root.splt->size == 0)
htab->root.splt->size += htab->plt_header_size;
htab->tls_trampoline = htab->root.splt->size;
htab->root.splt->size += htab->plt_entry_size;
/* If we're not using lazy TLS relocations, don't generate the
PLT and GOT entries they require. */
if (!(info->flags & DF_BIND_NOW))
{
htab->dt_tlsdesc_got = htab->root.sgot->size;
htab->root.sgot->size += 4;
htab->dt_tlsdesc_plt = htab->root.splt->size;
htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline);
}
}
/* The check_relocs and adjust_dynamic_symbol entry points have
determined the sizes of the various dynamic sections. Allocate
memory for them. */
plt = FALSE;
relocs = FALSE;
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char * name;
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
/* It's OK to base decisions on the section name, because none
of the dynobj section names depend upon the input files. */
name = bfd_get_section_name (dynobj, s);
if (s == htab->root.splt)
{
/* Remember whether there is a PLT. */
plt = s->size != 0;
}
else if (CONST_STRNEQ (name, ".rel"))
{
if (s->size != 0)
{
/* Remember whether there are any reloc sections other
than .rel(a).plt and .rela.plt.unloaded. */
if (s != htab->root.srelplt && s != htab->srelplt2)
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 if (s != htab->root.sgot
&& s != htab->root.sgotplt
&& s != htab->root.iplt
&& s != htab->root.igotplt
&& s != htab->sdynbss)
{
/* It's not one of our sections, so don't allocate space. */
continue;
}
if (s->size == 0)
{
/* If we don't need this section, strip it from the
output file. This is mostly to handle .rel(a).bss and
.rel(a).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 = (unsigned char *) bfd_zalloc (dynobj, s->size);
if (s->contents == NULL)
return FALSE;
}
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
values later, in elf32_arm_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 (plt)
{
if ( !add_dynamic_entry (DT_PLTGOT, 0)
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|| !add_dynamic_entry (DT_PLTREL,
htab->use_rel ? DT_REL : DT_RELA)
|| !add_dynamic_entry (DT_JMPREL, 0))
return FALSE;
if (htab->dt_tlsdesc_plt &&
(!add_dynamic_entry (DT_TLSDESC_PLT,0)
|| !add_dynamic_entry (DT_TLSDESC_GOT,0)))
return FALSE;
}
if (relocs)
{
if (htab->use_rel)
{
if (!add_dynamic_entry (DT_REL, 0)
|| !add_dynamic_entry (DT_RELSZ, 0)
|| !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
return FALSE;
}
else
{
if (!add_dynamic_entry (DT_RELA, 0)
|| !add_dynamic_entry (DT_RELASZ, 0)
|| !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
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 (& htab->root, elf32_arm_readonly_dynrelocs,
info);
if ((info->flags & DF_TEXTREL) != 0)
{
if (!add_dynamic_entry (DT_TEXTREL, 0))
return FALSE;
}
if (htab->vxworks_p
&& !elf_vxworks_add_dynamic_entries (output_bfd, info))
return FALSE;
}
#undef add_dynamic_entry
return TRUE;
}
/* Size sections even though they're not dynamic. We use it to setup
_TLS_MODULE_BASE_, if needed. */
static bfd_boolean
elf32_arm_always_size_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
asection *tls_sec;
if (info->relocatable)
return TRUE;
tls_sec = elf_hash_table (info)->tls_sec;
if (tls_sec)
{
struct elf_link_hash_entry *tlsbase;
tlsbase = elf_link_hash_lookup
(elf_hash_table (info), "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
if (tlsbase)
{
struct bfd_link_hash_entry *bh = NULL;
const struct elf_backend_data *bed
= get_elf_backend_data (output_bfd);
if (!(_bfd_generic_link_add_one_symbol
(info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
tls_sec, 0, NULL, FALSE,
bed->collect, &bh)))
return FALSE;
tlsbase->type = STT_TLS;
tlsbase = (struct elf_link_hash_entry *)bh;
tlsbase->def_regular = 1;
tlsbase->other = STV_HIDDEN;
(*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
}
}
return TRUE;
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
static bfd_boolean
elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
struct bfd_link_info * info,
struct elf_link_hash_entry * h,
Elf_Internal_Sym * sym)
{
struct elf32_arm_link_hash_table *htab;
struct elf32_arm_link_hash_entry *eh;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
eh = (struct elf32_arm_link_hash_entry *) h;
if (h->plt.offset != (bfd_vma) -1)
{
if (!eh->is_iplt)
{
BFD_ASSERT (h->dynindx != -1);
elf32_arm_populate_plt_entry (output_bfd, info, &h->plt, &eh->plt,
h->dynindx, 0);
}
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;
}
else if (eh->is_iplt && eh->plt.noncall_refcount != 0)
{
/* At least one non-call relocation references this .iplt entry,
so the .iplt entry is the function's canonical address. */
sym->st_info = ELF_ST_INFO (ELF_ST_BIND (sym->st_info), STT_FUNC);
sym->st_target_internal = ST_BRANCH_TO_ARM;
sym->st_shndx = (_bfd_elf_section_from_bfd_section
(output_bfd, htab->root.iplt->output_section));
sym->st_value = (h->plt.offset
+ htab->root.iplt->output_section->vma
+ htab->root.iplt->output_offset);
}
}
if (h->needs_copy)
{
asection * s;
Elf_Internal_Rela rel;
/* This symbol needs a copy reloc. Set it up. */
BFD_ASSERT (h->dynindx != -1
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak));
s = htab->srelbss;
BFD_ASSERT (s != NULL);
rel.r_addend = 0;
rel.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
elf32_arm_add_dynreloc (output_bfd, info, s, &rel);
}
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
to the ".got" section. */
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|| (!htab->vxworks_p && h == htab->root.hgot))
sym->st_shndx = SHN_ABS;
return TRUE;
}
static void
arm_put_trampoline (struct elf32_arm_link_hash_table *htab, bfd *output_bfd,
void *contents,
const unsigned long *template, unsigned count)
{
unsigned ix;
for (ix = 0; ix != count; ix++)
{
unsigned long insn = template[ix];
/* Emit mov pc,rx if bx is not permitted. */
if (htab->fix_v4bx == 1 && (insn & 0x0ffffff0) == 0x012fff10)
insn = (insn & 0xf000000f) | 0x01a0f000;
put_arm_insn (htab, output_bfd, insn, (char *)contents + ix*4);
}
}
/* Finish up the dynamic sections. */
static bfd_boolean
elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
{
bfd * dynobj;
asection * sgot;
asection * sdyn;
struct elf32_arm_link_hash_table *htab;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
dynobj = elf_hash_table (info)->dynobj;
sgot = htab->root.sgotplt;
/* A broken linker script might have discarded the dynamic sections.
Catch this here so that we do not seg-fault later on. */
if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
return FALSE;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
if (elf_hash_table (info)->dynamic_sections_created)
{
asection *splt;
Elf32_External_Dyn *dyncon, *dynconend;
splt = htab->root.splt;
BFD_ASSERT (splt != NULL && sdyn != NULL);
BFD_ASSERT (htab->symbian_p || sgot != NULL);
dyncon = (Elf32_External_Dyn *) sdyn->contents;
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
const char * name;
asection * s;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
unsigned int type;
default:
if (htab->vxworks_p
&& elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_HASH:
name = ".hash";
goto get_vma_if_bpabi;
case DT_STRTAB:
name = ".dynstr";
goto get_vma_if_bpabi;
case DT_SYMTAB:
name = ".dynsym";
goto get_vma_if_bpabi;
case DT_VERSYM:
name = ".gnu.version";
goto get_vma_if_bpabi;
case DT_VERDEF:
name = ".gnu.version_d";
goto get_vma_if_bpabi;
case DT_VERNEED:
name = ".gnu.version_r";
goto get_vma_if_bpabi;
case DT_PLTGOT:
name = ".got";
goto get_vma;
case DT_JMPREL:
name = RELOC_SECTION (htab, ".plt");
get_vma:
s = bfd_get_section_by_name (output_bfd, name);
BFD_ASSERT (s != NULL);
if (!htab->symbian_p)
dyn.d_un.d_ptr = s->vma;
else
/* In the BPABI, tags in the PT_DYNAMIC section point
at the file offset, not the memory address, for the
convenience of the post linker. */
dyn.d_un.d_ptr = s->filepos;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
get_vma_if_bpabi:
if (htab->symbian_p)
goto get_vma;
break;
case DT_PLTRELSZ:
s = htab->root.srelplt;
BFD_ASSERT (s != NULL);
dyn.d_un.d_val = s->size;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_RELSZ:
case DT_RELASZ:
if (!htab->symbian_p)
{
/* My reading of the SVR4 ABI indicates that the
procedure linkage table relocs (DT_JMPREL) should be
included in the overall relocs (DT_REL). This is
what Solaris does. However, UnixWare can not handle
that case. Therefore, we override the DT_RELSZ entry
here to make it not include the JMPREL relocs. Since
the linker script arranges for .rel(a).plt to follow all
other relocation sections, we don't have to worry
about changing the DT_REL entry. */
s = htab->root.srelplt;
if (s != NULL)
dyn.d_un.d_val -= s->size;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
}
/* Fall through. */
case DT_REL:
case DT_RELA:
/* In the BPABI, the DT_REL tag must point at the file
offset, not the VMA, of the first relocation
section. So, we use code similar to that in
elflink.c, but do not check for SHF_ALLOC on the
relcoation section, since relocations sections are
never allocated under the BPABI. The comments above
about Unixware notwithstanding, we include all of the
relocations here. */
if (htab->symbian_p)
{
unsigned int i;
type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
? SHT_REL : SHT_RELA);
dyn.d_un.d_val = 0;
for (i = 1; i < elf_numsections (output_bfd); i++)
{
Elf_Internal_Shdr *hdr
= elf_elfsections (output_bfd)[i];
if (hdr->sh_type == type)
{
if (dyn.d_tag == DT_RELSZ
|| dyn.d_tag == DT_RELASZ)
dyn.d_un.d_val += hdr->sh_size;
else if ((ufile_ptr) hdr->sh_offset
<= dyn.d_un.d_val - 1)
dyn.d_un.d_val = hdr->sh_offset;
}
}
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
break;
case DT_TLSDESC_PLT:
s = htab->root.splt;
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_plt);
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_TLSDESC_GOT:
s = htab->root.sgot;
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_got);
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
/* Set the bottom bit of DT_INIT/FINI if the
corresponding function is Thumb. */
case DT_INIT:
name = info->init_function;
goto get_sym;
case DT_FINI:
name = info->fini_function;
get_sym:
/* If it wasn't set by elf_bfd_final_link
then there is nothing to adjust. */
if (dyn.d_un.d_val != 0)
{
struct elf_link_hash_entry * eh;
eh = elf_link_hash_lookup (elf_hash_table (info), name,
FALSE, FALSE, TRUE);
if (eh != NULL && eh->target_internal == ST_BRANCH_TO_THUMB)
{
dyn.d_un.d_val |= 1;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
}
break;
}
}
/* Fill in the first entry in the procedure linkage table. */
if (splt->size > 0 && htab->plt_header_size)
{
const bfd_vma *plt0_entry;
bfd_vma got_address, plt_address, got_displacement;
/* Calculate the addresses of the GOT and PLT. */
got_address = sgot->output_section->vma + sgot->output_offset;
plt_address = splt->output_section->vma + splt->output_offset;
if (htab->vxworks_p)
{
/* The VxWorks GOT is relocated by the dynamic linker.
Therefore, we must emit relocations rather than simply
computing the values now. */
Elf_Internal_Rela rel;
plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
put_arm_insn (htab, output_bfd, plt0_entry[0],
splt->contents + 0);
put_arm_insn (htab, output_bfd, plt0_entry[1],
splt->contents + 4);
put_arm_insn (htab, output_bfd, plt0_entry[2],
splt->contents + 8);
bfd_put_32 (output_bfd, got_address, splt->contents + 12);
/* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
rel.r_offset = plt_address + 12;
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
rel.r_addend = 0;
SWAP_RELOC_OUT (htab) (output_bfd, &rel,
htab->srelplt2->contents);
}
else
{
got_displacement = got_address - (plt_address + 16);
plt0_entry = elf32_arm_plt0_entry;
put_arm_insn (htab, output_bfd, plt0_entry[0],
splt->contents + 0);
put_arm_insn (htab, output_bfd, plt0_entry[1],
splt->contents + 4);
put_arm_insn (htab, output_bfd, plt0_entry[2],
splt->contents + 8);
put_arm_insn (htab, output_bfd, plt0_entry[3],
splt->contents + 12);
#ifdef FOUR_WORD_PLT
/* The displacement value goes in the otherwise-unused
last word of the second entry. */
bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
#else
bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
#endif
}
}
/* UnixWare sets the entsize of .plt to 4, although that doesn't
really seem like the right value. */
if (splt->output_section->owner == output_bfd)
elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
if (htab->dt_tlsdesc_plt)
{
bfd_vma got_address
= sgot->output_section->vma + sgot->output_offset;
bfd_vma gotplt_address = (htab->root.sgot->output_section->vma
+ htab->root.sgot->output_offset);
bfd_vma plt_address
= splt->output_section->vma + splt->output_offset;
arm_put_trampoline (htab, output_bfd,
splt->contents + htab->dt_tlsdesc_plt,
dl_tlsdesc_lazy_trampoline, 6);
bfd_put_32 (output_bfd,
gotplt_address + htab->dt_tlsdesc_got
- (plt_address + htab->dt_tlsdesc_plt)
- dl_tlsdesc_lazy_trampoline[6],
splt->contents + htab->dt_tlsdesc_plt + 24);
bfd_put_32 (output_bfd,
got_address - (plt_address + htab->dt_tlsdesc_plt)
- dl_tlsdesc_lazy_trampoline[7],
splt->contents + htab->dt_tlsdesc_plt + 24 + 4);
}
if (htab->tls_trampoline)
{
arm_put_trampoline (htab, output_bfd,
splt->contents + htab->tls_trampoline,
tls_trampoline, 3);
#ifdef FOUR_WORD_PLT
bfd_put_32 (output_bfd, 0x00000000,
splt->contents + htab->tls_trampoline + 12);
#endif
}
if (htab->vxworks_p && !info->shared && htab->root.splt->size > 0)
{
/* Correct the .rel(a).plt.unloaded relocations. They will have
incorrect symbol indexes. */
int num_plts;
unsigned char *p;
num_plts = ((htab->root.splt->size - htab->plt_header_size)
/ htab->plt_entry_size);
p = htab->srelplt2->contents + RELOC_SIZE (htab);
for (; num_plts; num_plts--)
{
Elf_Internal_Rela rel;
SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
p += RELOC_SIZE (htab);
SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
p += RELOC_SIZE (htab);
}
}
}
/* Fill in the first three entries in the global offset table. */
if (sgot)
{
if (sgot->size > 0)
{
if (sdyn == NULL)
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
else
bfd_put_32 (output_bfd,
sdyn->output_section->vma + sdyn->output_offset,
sgot->contents);
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
}
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
}
return TRUE;
}
static void
elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
{
Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
struct elf32_arm_link_hash_table *globals;
i_ehdrp = elf_elfheader (abfd);
if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
else
i_ehdrp->e_ident[EI_OSABI] = 0;
i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
if (link_info)
{
globals = elf32_arm_hash_table (link_info);
if (globals != NULL && globals->byteswap_code)
i_ehdrp->e_flags |= EF_ARM_BE8;
}
}
static enum elf_reloc_type_class
elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
{
switch ((int) ELF32_R_TYPE (rela->r_info))
{
case R_ARM_RELATIVE:
return reloc_class_relative;
case R_ARM_JUMP_SLOT:
return reloc_class_plt;
case R_ARM_COPY:
return reloc_class_copy;
default:
return reloc_class_normal;
}
}
/* Set the right machine number for an Arm ELF file. */
static bfd_boolean
elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
{
if (hdr->sh_type == SHT_NOTE)
*flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
return TRUE;
}
static void
elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
{
bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
}
/* Return TRUE if this is an unwinding table entry. */
static bfd_boolean
is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
{
return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
|| CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
}
/* Set the type and flags for an ARM section. We do this by
the section name, which is a hack, but ought to work. */
static bfd_boolean
elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
{
const char * name;
name = bfd_get_section_name (abfd, sec);
if (is_arm_elf_unwind_section_name (abfd, name))
{
hdr->sh_type = SHT_ARM_EXIDX;
hdr->sh_flags |= SHF_LINK_ORDER;
}
return TRUE;
}
/* Handle an ARM 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
elf32_arm_section_from_shdr (bfd *abfd,
Elf_Internal_Shdr * hdr,
const char *name,
int shindex)
{
/* There ought to be a place to keep ELF backend specific flags, but
at the moment there isn't one. We just keep track of the
sections by their name, instead. Fortunately, the ABI gives
names for all the ARM specific sections, so we will probably get
away with this. */
switch (hdr->sh_type)
{
case SHT_ARM_EXIDX:
case SHT_ARM_PREEMPTMAP:
case SHT_ARM_ATTRIBUTES:
break;
default:
return FALSE;
}
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
return FALSE;
return TRUE;
}
static _arm_elf_section_data *
get_arm_elf_section_data (asection * sec)
{
if (sec && sec->owner && is_arm_elf (sec->owner))
return elf32_arm_section_data (sec);
else
return NULL;
}
typedef struct
{
void *finfo;
struct bfd_link_info *info;
asection *sec;
int sec_shndx;
int (*func) (void *, const char *, Elf_Internal_Sym *,
asection *, struct elf_link_hash_entry *);
} output_arch_syminfo;
enum map_symbol_type
{
ARM_MAP_ARM,
ARM_MAP_THUMB,
ARM_MAP_DATA
};
/* Output a single mapping symbol. */
static bfd_boolean
elf32_arm_output_map_sym (output_arch_syminfo *osi,
enum map_symbol_type type,
bfd_vma offset)
{
static const char *names[3] = {"$a", "$t", "$d"};
Elf_Internal_Sym sym;
sym.st_value = osi->sec->output_section->vma
+ osi->sec->output_offset
+ offset;
sym.st_size = 0;
sym.st_other = 0;
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
sym.st_shndx = osi->sec_shndx;
sym.st_target_internal = 0;
elf32_arm_section_map_add (osi->sec, names[type][1], offset);
return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
}
/* Output mapping symbols for the PLT entry described by ROOT_PLT and ARM_PLT.
IS_IPLT_ENTRY_P says whether the PLT is in .iplt rather than .plt. */
static bfd_boolean
elf32_arm_output_plt_map_1 (output_arch_syminfo *osi,
bfd_boolean is_iplt_entry_p,
union gotplt_union *root_plt,
struct arm_plt_info *arm_plt)
{
struct elf32_arm_link_hash_table *htab;
bfd_vma addr, plt_header_size;
if (root_plt->offset == (bfd_vma) -1)
return TRUE;
htab = elf32_arm_hash_table (osi->info);
if (htab == NULL)
return FALSE;
if (is_iplt_entry_p)
{
osi->sec = htab->root.iplt;
plt_header_size = 0;
}
else
{
osi->sec = htab->root.splt;
plt_header_size = htab->plt_header_size;
}
osi->sec_shndx = (_bfd_elf_section_from_bfd_section
(osi->info->output_bfd, osi->sec->output_section));
addr = root_plt->offset & -2;
if (htab->symbian_p)
{
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
return FALSE;
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
return FALSE;
}
else if (htab->vxworks_p)
{
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
return FALSE;
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
return FALSE;
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
return FALSE;
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
return FALSE;
}
else
{
bfd_boolean thumb_stub_p;
thumb_stub_p = elf32_arm_plt_needs_thumb_stub_p (osi->info, arm_plt);
if (thumb_stub_p)
{
if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
return FALSE;
}
#ifdef FOUR_WORD_PLT
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
return FALSE;
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
return FALSE;
#else
/* A three-word PLT with no Thumb thunk contains only Arm code,
so only need to output a mapping symbol for the first PLT entry and
entries with thumb thunks. */
if (thumb_stub_p || addr == plt_header_size)
{
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
return FALSE;
}
#endif
}
return TRUE;
}
/* Output mapping symbols for PLT entries associated with H. */
static bfd_boolean
elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
{
output_arch_syminfo *osi = (output_arch_syminfo *) inf;
struct elf32_arm_link_hash_entry *eh;
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;
eh = (struct elf32_arm_link_hash_entry *) h;
return elf32_arm_output_plt_map_1 (osi, SYMBOL_CALLS_LOCAL (osi->info, h),
&h->plt, &eh->plt);
}
/* Output a single local symbol for a generated stub. */
static bfd_boolean
elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
bfd_vma offset, bfd_vma size)
{
Elf_Internal_Sym sym;
sym.st_value = osi->sec->output_section->vma
+ osi->sec->output_offset
+ offset;
sym.st_size = size;
sym.st_other = 0;
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
sym.st_shndx = osi->sec_shndx;
sym.st_target_internal = 0;
return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
}
static bfd_boolean
arm_map_one_stub (struct bfd_hash_entry * gen_entry,
void * in_arg)
{
struct elf32_arm_stub_hash_entry *stub_entry;
asection *stub_sec;
bfd_vma addr;
char *stub_name;
output_arch_syminfo *osi;
const insn_sequence *template_sequence;
enum stub_insn_type prev_type;
int size;
int i;
enum map_symbol_type sym_type;
/* Massage our args to the form they really have. */
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
osi = (output_arch_syminfo *) in_arg;
stub_sec = stub_entry->stub_sec;
/* Ensure this stub is attached to the current section being
processed. */
if (stub_sec != osi->sec)
return TRUE;
addr = (bfd_vma) stub_entry->stub_offset;
stub_name = stub_entry->output_name;
template_sequence = stub_entry->stub_template;
switch (template_sequence[0].type)
{
case ARM_TYPE:
if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size))
return FALSE;
break;
case THUMB16_TYPE:
case THUMB32_TYPE:
if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1,
stub_entry->stub_size))
return FALSE;
break;
default:
BFD_FAIL ();
return 0;
}
prev_type = DATA_TYPE;
size = 0;
for (i = 0; i < stub_entry->stub_template_size; i++)
{
switch (template_sequence[i].type)
{
case ARM_TYPE:
sym_type = ARM_MAP_ARM;
break;
case THUMB16_TYPE:
case THUMB32_TYPE:
sym_type = ARM_MAP_THUMB;
break;
case DATA_TYPE:
sym_type = ARM_MAP_DATA;
break;
default:
BFD_FAIL ();
return FALSE;
}
if (template_sequence[i].type != prev_type)
{
prev_type = template_sequence[i].type;
if (!elf32_arm_output_map_sym (osi, sym_type, addr + size))
return FALSE;
}
switch (template_sequence[i].type)
{
case ARM_TYPE:
case THUMB32_TYPE:
size += 4;
break;
case THUMB16_TYPE:
size += 2;
break;
case DATA_TYPE:
size += 4;
break;
default:
BFD_FAIL ();
return FALSE;
}
}
return TRUE;
}
/* Output mapping symbols for linker generated sections,
and for those data-only sections that do not have a
$d. */
static bfd_boolean
elf32_arm_output_arch_local_syms (bfd *output_bfd,
struct bfd_link_info *info,
void *finfo,
int (*func) (void *, const char *,
Elf_Internal_Sym *,
asection *,
struct elf_link_hash_entry *))
{
output_arch_syminfo osi;
struct elf32_arm_link_hash_table *htab;
bfd_vma offset;
bfd_size_type size;
bfd *input_bfd;
htab = elf32_arm_hash_table (info);
if (htab == NULL)
return FALSE;
check_use_blx (htab);
osi.finfo = finfo;
osi.info = info;
osi.func = func;
/* Add a $d mapping symbol to data-only sections that
don't have any mapping symbol. This may result in (harmless) redundant
mapping symbols. */
for (input_bfd = info->input_bfds;
input_bfd != NULL;
input_bfd = input_bfd->link_next)
{
if ((input_bfd->flags & (BFD_LINKER_CREATED | HAS_SYMS)) == HAS_SYMS)
for (osi.sec = input_bfd->sections;
osi.sec != NULL;
osi.sec = osi.sec->next)
{
if (osi.sec->output_section != NULL
&& ((osi.sec->output_section->flags & (SEC_ALLOC | SEC_CODE))
!= 0)
&& (osi.sec->flags & (SEC_HAS_CONTENTS | SEC_LINKER_CREATED))
== SEC_HAS_CONTENTS
&& get_arm_elf_section_data (osi.sec) != NULL
&& get_arm_elf_section_data (osi.sec)->mapcount == 0
&& osi.sec->size > 0)
{
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section);
if (osi.sec_shndx != (int)SHN_BAD)
elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 0);
}
}
}
/* ARM->Thumb glue. */
if (htab->arm_glue_size > 0)
{
osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
ARM2THUMB_GLUE_SECTION_NAME);
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section);
if (info->shared || htab->root.is_relocatable_executable
|| htab->pic_veneer)
size = ARM2THUMB_PIC_GLUE_SIZE;
else if (htab->use_blx)
size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
else
size = ARM2THUMB_STATIC_GLUE_SIZE;
for (offset = 0; offset < htab->arm_glue_size; offset += size)
{
elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
}
}
/* Thumb->ARM glue. */
if (htab->thumb_glue_size > 0)
{
osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
THUMB2ARM_GLUE_SECTION_NAME);
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section);
size = THUMB2ARM_GLUE_SIZE;
for (offset = 0; offset < htab->thumb_glue_size; offset += size)
{
elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
}
}
/* ARMv4 BX veneers. */
if (htab->bx_glue_size > 0)
{
osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
ARM_BX_GLUE_SECTION_NAME);
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section);
elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
}
/* Long calls stubs. */
if (htab->stub_bfd && htab->stub_bfd->sections)
{
asection* stub_sec;
for (stub_sec = htab->stub_bfd->sections;
stub_sec != NULL;
stub_sec = stub_sec->next)
{
/* Ignore non-stub sections. */
if (!strstr (stub_sec->name, STUB_SUFFIX))
continue;
osi.sec = stub_sec;
osi.sec_shndx = _bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section);
bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
}
}
/* Finally, output mapping symbols for the PLT. */
if (htab->root.splt && htab->root.splt->size > 0)
{
osi.sec = htab->root.splt;
osi.sec_shndx = (_bfd_elf_section_from_bfd_section
(output_bfd, osi.sec->output_section));
/* Output mapping symbols for the plt header. SymbianOS does not have a
plt header. */
if (htab->vxworks_p)
{
/* VxWorks shared libraries have no PLT header. */
if (!info->shared)
{
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
return FALSE;
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
return FALSE;
}
}
else if (!htab->symbian_p)
{
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
return FALSE;
#ifndef FOUR_WORD_PLT
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
return FALSE;
#endif
}
}
if ((htab->root.splt && htab->root.splt->size > 0)
|| (htab->root.iplt && htab->root.iplt->size > 0))
{
elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, &osi);
for (input_bfd = info->input_bfds;
input_bfd != NULL;
input_bfd = input_bfd->link_next)
{
struct arm_local_iplt_info **local_iplt;
unsigned int i, num_syms;
local_iplt = elf32_arm_local_iplt (input_bfd);
if (local_iplt != NULL)
{
num_syms = elf_symtab_hdr (input_bfd).sh_info;
for (i = 0; i < num_syms; i++)
if (local_iplt[i] != NULL
&& !elf32_arm_output_plt_map_1 (&osi, TRUE,
&local_iplt[i]->root,
&local_iplt[i]->arm))
return FALSE;
}
}
}
if (htab->dt_tlsdesc_plt != 0)
{
/* Mapping symbols for the lazy tls trampoline. */
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->dt_tlsdesc_plt))
return FALSE;
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA,
htab->dt_tlsdesc_plt + 24))
return FALSE;
}
if (htab->tls_trampoline != 0)
{
/* Mapping symbols for the tls trampoline. */
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->tls_trampoline))
return FALSE;
#ifdef FOUR_WORD_PLT
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA,
htab->tls_trampoline + 12))
return FALSE;
#endif
}
return TRUE;
}
/* Allocate target specific section data. */
static bfd_boolean
elf32_arm_new_section_hook (bfd *abfd, asection *sec)
{
if (!sec->used_by_bfd)
{
_arm_elf_section_data *sdata;
bfd_size_type amt = sizeof (*sdata);
sdata = (_arm_elf_section_data *) bfd_zalloc (abfd, amt);
if (sdata == NULL)
return FALSE;
sec->used_by_bfd = sdata;
}
return _bfd_elf_new_section_hook (abfd, sec);
}
/* Used to order a list of mapping symbols by address. */
static int
elf32_arm_compare_mapping (const void * a, const void * b)
{
const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
if (amap->vma > bmap->vma)
return 1;
else if (amap->vma < bmap->vma)
return -1;
else if (amap->type > bmap->type)
/* Ensure results do not depend on the host qsort for objects with
multiple mapping symbols at the same address by sorting on type
after vma. */
return 1;
else if (amap->type < bmap->type)
return -1;
else
return 0;
}
/* Add OFFSET to lower 31 bits of ADDR, leaving other bits unmodified. */
static unsigned long
offset_prel31 (unsigned long addr, bfd_vma offset)
{
return (addr & ~0x7ffffffful) | ((addr + offset) & 0x7ffffffful);
}
/* Copy an .ARM.exidx table entry, adding OFFSET to (applied) PREL31
relocations. */
static void
copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, bfd_vma offset)
{
unsigned long first_word = bfd_get_32 (output_bfd, from);
unsigned long second_word = bfd_get_32 (output_bfd, from + 4);
/* High bit of first word is supposed to be zero. */
if ((first_word & 0x80000000ul) == 0)
first_word = offset_prel31 (first_word, offset);
/* If the high bit of the first word is clear, and the bit pattern is not 0x1
(EXIDX_CANTUNWIND), this is an offset to an .ARM.extab entry. */
if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0))
second_word = offset_prel31 (second_word, offset);
bfd_put_32 (output_bfd, first_word, to);
bfd_put_32 (output_bfd, second_word, to + 4);
}
/* Data for make_branch_to_a8_stub(). */
struct a8_branch_to_stub_data {
asection *writing_section;
bfd_byte *contents;
};
/* Helper to insert branches to Cortex-A8 erratum stubs in the right
places for a particular section. */
static bfd_boolean
make_branch_to_a8_stub (struct bfd_hash_entry *gen_entry,
void *in_arg)
{
struct elf32_arm_stub_hash_entry *stub_entry;
struct a8_branch_to_stub_data *data;
bfd_byte *contents;
unsigned long branch_insn;
bfd_vma veneered_insn_loc, veneer_entry_loc;
bfd_signed_vma branch_offset;
bfd *abfd;
unsigned int target;
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
data = (struct a8_branch_to_stub_data *) in_arg;
if (stub_entry->target_section != data->writing_section
|| stub_entry->stub_type < arm_stub_a8_veneer_lwm)
return TRUE;
contents = data->contents;
veneered_insn_loc = stub_entry->target_section->output_section->vma
+ stub_entry->target_section->output_offset
+ stub_entry->target_value;
veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ stub_entry->stub_sec->output_offset
+ stub_entry->stub_offset;
if (stub_entry->stub_type == arm_stub_a8_veneer_blx)
veneered_insn_loc &= ~3u;
branch_offset = veneer_entry_loc - veneered_insn_loc - 4;
abfd = stub_entry->target_section->owner;
target = stub_entry->target_value;
/* We attempt to avoid this condition by setting stubs_always_after_branch
in elf32_arm_size_stubs if we've enabled the Cortex-A8 erratum workaround.
This check is just to be on the safe side... */
if ((veneered_insn_loc & ~0xfff) == (veneer_entry_loc & ~0xfff))
{
(*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub is "
"allocated in unsafe location"), abfd);
return FALSE;
}
switch (stub_entry->stub_type)
{
case arm_stub_a8_veneer_b:
case arm_stub_a8_veneer_b_cond:
branch_insn = 0xf0009000;
goto jump24;
case arm_stub_a8_veneer_blx:
branch_insn = 0xf000e800;
goto jump24;
case arm_stub_a8_veneer_bl:
{
unsigned int i1, j1, i2, j2, s;
branch_insn = 0xf000d000;
jump24:
if (branch_offset < -16777216 || branch_offset > 16777214)
{
/* There's not much we can do apart from complain if this
happens. */
(*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub out "
"of range (input file too large)"), abfd);
return FALSE;
}
/* i1 = not(j1 eor s), so:
not i1 = j1 eor s
j1 = (not i1) eor s. */
branch_insn |= (branch_offset >> 1) & 0x7ff;
branch_insn |= ((branch_offset >> 12) & 0x3ff) << 16;
i2 = (branch_offset >> 22) & 1;
i1 = (branch_offset >> 23) & 1;
s = (branch_offset >> 24) & 1;
j1 = (!i1) ^ s;
j2 = (!i2) ^ s;
branch_insn |= j2 << 11;
branch_insn |= j1 << 13;
branch_insn |= s << 26;
}
break;
default:
BFD_FAIL ();
return FALSE;
}
bfd_put_16 (abfd, (branch_insn >> 16) & 0xffff, &contents[target]);
bfd_put_16 (abfd, branch_insn & 0xffff, &contents[target + 2]);
return TRUE;
}
/* Do code byteswapping. Return FALSE afterwards so that the section is
written out as normal. */
static bfd_boolean
elf32_arm_write_section (bfd *output_bfd,
struct bfd_link_info *link_info,
asection *sec,
bfd_byte *contents)
{
unsigned int mapcount, errcount;
_arm_elf_section_data *arm_data;
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
elf32_arm_section_map *map;
elf32_vfp11_erratum_list *errnode;
bfd_vma ptr;
bfd_vma end;
bfd_vma offset = sec->output_section->vma + sec->output_offset;
bfd_byte tmp;
unsigned int i;
if (globals == NULL)
return FALSE;
/* If this section has not been allocated an _arm_elf_section_data
structure then we cannot record anything. */
arm_data = get_arm_elf_section_data (sec);
if (arm_data == NULL)
return FALSE;
mapcount = arm_data->mapcount;
map = arm_data->map;
errcount = arm_data->erratumcount;
if (errcount != 0)
{
unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
for (errnode = arm_data->erratumlist; errnode != 0;
errnode = errnode->next)
{
bfd_vma target = errnode->vma - offset;
switch (errnode->type)
{
case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
{
bfd_vma branch_to_veneer;
/* Original condition code of instruction, plus bit mask for
ARM B instruction. */
unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
| 0x0a000000;
/* The instruction is before the label. */
target -= 4;
/* Above offset included in -4 below. */
branch_to_veneer = errnode->u.b.veneer->vma
- errnode->vma - 4;
if ((signed) branch_to_veneer < -(1 << 25)
|| (signed) branch_to_veneer >= (1 << 25))
(*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
"range"), output_bfd);
insn |= (branch_to_veneer >> 2) & 0xffffff;
contents[endianflip ^ target] = insn & 0xff;
contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff;
contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff;
contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff;
}
break;
case VFP11_ERRATUM_ARM_VENEER:
{
bfd_vma branch_from_veneer;
unsigned int insn;
/* Take size of veneer into account. */
branch_from_veneer = errnode->u.v.branch->vma
- errnode->vma - 12;
if ((signed) branch_from_veneer < -(1 << 25)
|| (signed) branch_from_veneer >= (1 << 25))
(*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
"range"), output_bfd);
/* Original instruction. */
insn = errnode->u.v.branch->u.b.vfp_insn;
contents[endianflip ^ target] = insn & 0xff;
contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff;
contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff;
contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff;
/* Branch back to insn after original insn. */
insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
contents[endianflip ^ (target + 4)] = insn & 0xff;
contents[endianflip ^ (target + 5)] = (insn >> 8) & 0xff;
contents[endianflip ^ (target + 6)] = (insn >> 16) & 0xff;
contents[endianflip ^ (target + 7)] = (insn >> 24) & 0xff;
}
break;
default:
abort ();
}
}
}
if (arm_data->elf.this_hdr.sh_type == SHT_ARM_EXIDX)
{
arm_unwind_table_edit *edit_node
= arm_data->u.exidx.unwind_edit_list;
/* Now, sec->size is the size of the section we will write. The original
size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
markers) was sec->rawsize. (This isn't the case if we perform no
edits, then rawsize will be zero and we should use size). */
bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size);
unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size;
unsigned int in_index, out_index;
bfd_vma add_to_offsets = 0;
for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;)
{
if (edit_node)
{
unsigned int edit_index = edit_node->index;
if (in_index < edit_index && in_index * 8 < input_size)
{
copy_exidx_entry (output_bfd, edited_contents + out_index * 8,
contents + in_index * 8, add_to_offsets);
out_index++;
in_index++;
}
else if (in_index == edit_index
|| (in_index * 8 >= input_size
&& edit_index == UINT_MAX))
{
switch (edit_node->type)
{
case DELETE_EXIDX_ENTRY:
in_index++;
add_to_offsets += 8;
break;
case INSERT_EXIDX_CANTUNWIND_AT_END:
{
asection *text_sec = edit_node->linked_section;
bfd_vma text_offset = text_sec->output_section->vma
+ text_sec->output_offset
+ text_sec->size;
bfd_vma exidx_offset = offset + out_index * 8;
unsigned long prel31_offset;
/* Note: this is meant to be equivalent to an
R_ARM_PREL31 relocation. These synthetic
EXIDX_CANTUNWIND markers are not relocated by the
usual BFD method. */
prel31_offset = (text_offset - exidx_offset)
& 0x7ffffffful;
/* First address we can't unwind. */
bfd_put_32 (output_bfd, prel31_offset,
&edited_contents[out_index * 8]);
/* Code for EXIDX_CANTUNWIND. */
bfd_put_32 (output_bfd, 0x1,
&edited_contents[out_index * 8 + 4]);
out_index++;
add_to_offsets -= 8;
}
break;
}
edit_node = edit_node->next;
}
}
else
{
/* No more edits, copy remaining entries verbatim. */
copy_exidx_entry (output_bfd, edited_contents + out_index * 8,
contents + in_index * 8, add_to_offsets);
out_index++;
in_index++;
}
}
if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD))
bfd_set_section_contents (output_bfd, sec->output_section,
edited_contents,
(file_ptr) sec->output_offset, sec->size);
return TRUE;
}
/* Fix code to point to Cortex-A8 erratum stubs. */
if (globals->fix_cortex_a8)
{
struct a8_branch_to_stub_data data;
data.writing_section = sec;
data.contents = contents;
bfd_hash_traverse (&globals->stub_hash_table, make_branch_to_a8_stub,
&data);
}
if (mapcount == 0)
return FALSE;
if (globals->byteswap_code)
{
qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
ptr = map[0].vma;
for (i = 0; i < mapcount; i++)
{
if (i == mapcount - 1)
end = sec->size;
else
end = map[i + 1].vma;
switch (map[i].type)
{
case 'a':
/* Byte swap code words. */
while (ptr + 3 < end)
{
tmp = contents[ptr];
contents[ptr] = contents[ptr + 3];
contents[ptr + 3] = tmp;
tmp = contents[ptr + 1];
contents[ptr + 1] = contents[ptr + 2];
contents[ptr + 2] = tmp;
ptr += 4;
}
break;
case 't':
/* Byte swap code halfwords. */
while (ptr + 1 < end)
{
tmp = contents[ptr];
contents[ptr] = contents[ptr + 1];
contents[ptr + 1] = tmp;
ptr += 2;
}
break;
case 'd':
/* Leave data alone. */
break;
}
ptr = end;
}
}
free (map);
arm_data->mapcount = -1;
arm_data->mapsize = 0;
arm_data->map = NULL;
return FALSE;
}
/* Mangle thumb function symbols as we read them in. */
static bfd_boolean
elf32_arm_swap_symbol_in (bfd * abfd,
const void *psrc,
const void *pshn,
Elf_Internal_Sym *dst)
{
if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
return FALSE;
/* New EABI objects mark thumb function symbols by setting the low bit of
the address. */
if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
|| ELF_ST_TYPE (dst->st_info) == STT_GNU_IFUNC)
{
if (dst->st_value & 1)
{
dst->st_value &= ~(bfd_vma) 1;
dst->st_target_internal = ST_BRANCH_TO_THUMB;
}
else
dst->st_target_internal = ST_BRANCH_TO_ARM;
}
else if (ELF_ST_TYPE (dst->st_info) == STT_ARM_TFUNC)
{
dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_FUNC);
dst->st_target_internal = ST_BRANCH_TO_THUMB;
}
else if (ELF_ST_TYPE (dst->st_info) == STT_SECTION)
dst->st_target_internal = ST_BRANCH_LONG;
else
dst->st_target_internal = ST_BRANCH_UNKNOWN;
return TRUE;
}
/* Mangle thumb function symbols as we write them out. */
static void
elf32_arm_swap_symbol_out (bfd *abfd,
const Elf_Internal_Sym *src,
void *cdst,
void *shndx)
{
Elf_Internal_Sym newsym;
/* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
of the address set, as per the new EABI. We do this unconditionally
because objcopy does not set the elf header flags until after
it writes out the symbol table. */
if (src->st_target_internal == ST_BRANCH_TO_THUMB)
{
newsym = *src;
if (ELF_ST_TYPE (src->st_info) != STT_GNU_IFUNC)
newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
if (newsym.st_shndx != SHN_UNDEF)
{
/* Do this only for defined symbols. At link type, the static
linker will simulate the work of dynamic linker of resolving
symbols and will carry over the thumbness of found symbols to
the output symbol table. It's not clear how it happens, but
the thumbness of undefined symbols can well be different at
runtime, and writing '1' for them will be confusing for users
and possibly for dynamic linker itself.
*/
newsym.st_value |= 1;
}
src = &newsym;
}
bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
}
/* Add the PT_ARM_EXIDX program header. */
static bfd_boolean
elf32_arm_modify_segment_map (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
struct elf_segment_map *m;
asection *sec;
sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
{
/* If there is already a PT_ARM_EXIDX header, then we do not
want to add another one. This situation arises when running
"strip"; the input binary already has the header. */
m = elf_tdata (abfd)->segment_map;
while (m && m->p_type != PT_ARM_EXIDX)
m = m->next;
if (!m)
{
m = (struct elf_segment_map *)
bfd_zalloc (abfd, sizeof (struct elf_segment_map));
if (m == NULL)
return FALSE;
m->p_type = PT_ARM_EXIDX;
m->count = 1;
m->sections[0] = sec;
m->next = elf_tdata (abfd)->segment_map;
elf_tdata (abfd)->segment_map = m;
}
}
return TRUE;
}
/* We may add a PT_ARM_EXIDX program header. */
static int
elf32_arm_additional_program_headers (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
asection *sec;
sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
return 1;
else
return 0;
}
/* Hook called by the linker routine which adds symbols from an object
file. */
static bfd_boolean
elf32_arm_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
Elf_Internal_Sym *sym, const char **namep,
flagword *flagsp, asection **secp, bfd_vma *valp)
{
if ((abfd->flags & DYNAMIC) == 0
&& (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
if (elf32_arm_hash_table (info)->vxworks_p
&& !elf_vxworks_add_symbol_hook (abfd, info, sym, namep,
flagsp, secp, valp))
return FALSE;
return TRUE;
}
/* We use this to override swap_symbol_in and swap_symbol_out. */
const struct elf_size_info elf32_arm_size_info =
{
sizeof (Elf32_External_Ehdr),
sizeof (Elf32_External_Phdr),
sizeof (Elf32_External_Shdr),
sizeof (Elf32_External_Rel),
sizeof (Elf32_External_Rela),
sizeof (Elf32_External_Sym),
sizeof (Elf32_External_Dyn),
sizeof (Elf_External_Note),
4,
1,
32, 2,
ELFCLASS32, EV_CURRENT,
bfd_elf32_write_out_phdrs,
bfd_elf32_write_shdrs_and_ehdr,
bfd_elf32_checksum_contents,
bfd_elf32_write_relocs,
elf32_arm_swap_symbol_in,
elf32_arm_swap_symbol_out,
bfd_elf32_slurp_reloc_table,
bfd_elf32_slurp_symbol_table,
bfd_elf32_swap_dyn_in,
bfd_elf32_swap_dyn_out,
bfd_elf32_swap_reloc_in,
bfd_elf32_swap_reloc_out,
bfd_elf32_swap_reloca_in,
bfd_elf32_swap_reloca_out
};
#define ELF_ARCH bfd_arch_arm
#define ELF_TARGET_ID ARM_ELF_DATA
#define ELF_MACHINE_CODE EM_ARM
#ifdef __QNXTARGET__
#define ELF_MAXPAGESIZE 0x1000
#else
#define ELF_MAXPAGESIZE 0x8000
#endif
#define ELF_MINPAGESIZE 0x1000
#define ELF_COMMONPAGESIZE 0x1000
#define bfd_elf32_mkobject elf32_arm_mkobject
#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
#define bfd_elf32_bfd_final_link elf32_arm_final_link
#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
#define elf_backend_check_relocs elf32_arm_check_relocs
#define elf_backend_relocate_section elf32_arm_relocate_section
#define elf_backend_write_section elf32_arm_write_section
#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
#define elf_backend_always_size_sections elf32_arm_always_size_sections
#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
#define elf_backend_post_process_headers elf32_arm_post_process_headers
#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
#define elf_backend_object_p elf32_arm_object_p
#define elf_backend_section_flags elf32_arm_section_flags
#define elf_backend_fake_sections elf32_arm_fake_sections
#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
#define elf_backend_final_write_processing elf32_arm_final_write_processing
#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
#define elf_backend_size_info elf32_arm_size_info
#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
#define elf_backend_additional_program_headers elf32_arm_additional_program_headers
#define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
#define elf_backend_begin_write_processing elf32_arm_begin_write_processing
#define elf_backend_add_symbol_hook elf32_arm_add_symbol_hook
#define elf_backend_can_refcount 1
#define elf_backend_can_gc_sections 1
#define elf_backend_plt_readonly 1
#define elf_backend_want_got_plt 1
#define elf_backend_want_plt_sym 0
#define elf_backend_may_use_rel_p 1
#define elf_backend_may_use_rela_p 0
#define elf_backend_default_use_rela_p 0
#define elf_backend_got_header_size 12
#undef elf_backend_obj_attrs_vendor
#define elf_backend_obj_attrs_vendor "aeabi"
#undef elf_backend_obj_attrs_section
#define elf_backend_obj_attrs_section ".ARM.attributes"
#undef elf_backend_obj_attrs_arg_type
#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
#undef elf_backend_obj_attrs_section_type
#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
#define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
#define elf_backend_obj_attrs_handle_unknown elf32_arm_obj_attrs_handle_unknown
#include "elf32-target.h"
/* VxWorks Targets. */
#undef TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
#undef TARGET_BIG_SYM
#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
/* Like elf32_arm_link_hash_table_create -- but overrides
appropriately for VxWorks. */
static struct bfd_link_hash_table *
elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
{
struct bfd_link_hash_table *ret;
ret = elf32_arm_link_hash_table_create (abfd);
if (ret)
{
struct elf32_arm_link_hash_table *htab
= (struct elf32_arm_link_hash_table *) ret;
htab->use_rel = 0;
htab->vxworks_p = 1;
}
return ret;
}
static void
elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
{
elf32_arm_final_write_processing (abfd, linker);
elf_vxworks_final_write_processing (abfd, linker);
}
#undef elf32_bed
#define elf32_bed elf32_arm_vxworks_bed
#undef bfd_elf32_bfd_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
#undef elf_backend_final_write_processing
#define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
#undef elf_backend_emit_relocs
#define elf_backend_emit_relocs elf_vxworks_emit_relocs
#undef elf_backend_may_use_rel_p
#define elf_backend_may_use_rel_p 0
#undef elf_backend_may_use_rela_p
#define elf_backend_may_use_rela_p 1
#undef elf_backend_default_use_rela_p
#define elf_backend_default_use_rela_p 1
#undef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym 1
#undef ELF_MAXPAGESIZE
#define ELF_MAXPAGESIZE 0x1000
#include "elf32-target.h"
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
{
flagword out_flags;
flagword in_flags;
bfd_boolean flags_compatible = TRUE;
asection *sec;
/* Check if we have the same endianness. */
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
return FALSE;
if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
return TRUE;
if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
return FALSE;
/* The input BFD must have had its flags initialised. */
/* The following seems bogus to me -- The flags are initialized in
the assembler but I don't think an elf_flags_init field is
written into the object. */
/* BFD_ASSERT (elf_flags_init (ibfd)); */
in_flags = elf_elfheader (ibfd)->e_flags;
out_flags = elf_elfheader (obfd)->e_flags;
/* In theory there is no reason why we couldn't handle this. However
in practice it isn't even close to working and there is no real
reason to want it. */
if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
&& !(ibfd->flags & DYNAMIC)
&& (in_flags & EF_ARM_BE8))
{
_bfd_error_handler (_("error: %B is already in final BE8 format"),
ibfd);
return FALSE;
}
if (!elf_flags_init (obfd))
{
/* If the input is the default architecture and had the default
flags then do not bother setting the flags for the output
architecture, instead allow future merges to do this. If no
future merges ever set these flags then they will retain their
uninitialised values, which surprise surprise, correspond
to the default values. */
if (bfd_get_arch_info (ibfd)->the_default
&& elf_elfheader (ibfd)->e_flags == 0)
return TRUE;
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = in_flags;
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
return TRUE;
}
/* Determine what should happen if the input ARM architecture
does not match the output ARM architecture. */
if (! bfd_arm_merge_machines (ibfd, obfd))
return FALSE;
/* Identical flags must be compatible. */
if (in_flags == out_flags)
return TRUE;
/* Check to see if the input BFD actually contains any sections. If
not, its flags may not have been initialised either, but it
cannot actually cause any incompatiblity. Do not short-circuit
dynamic objects; their section list may be emptied by
elf_link_add_object_symbols.
Also check to see if there are no code sections in the input.
In this case there is no need to check for code specific flags.
XXX - do we need to worry about floating-point format compatability
in data sections ? */
if (!(ibfd->flags & DYNAMIC))
{
bfd_boolean null_input_bfd = TRUE;
bfd_boolean only_data_sections = TRUE;
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
{
/* Ignore synthetic glue sections. */
if (strcmp (sec->name, ".glue_7")
&& strcmp (sec->name, ".glue_7t"))
{
if ((bfd_get_section_flags (ibfd, sec)
& (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
== (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
only_data_sections = FALSE;
null_input_bfd = FALSE;
break;
}
}
if (null_input_bfd || only_data_sections)
return TRUE;
}
/* Complain about various flag mismatches. */
if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
EF_ARM_EABI_VERSION (out_flags)))
{
_bfd_error_handler
(_("error: Source object %B has EABI version %d, but target %B has EABI version %d"),
ibfd, obfd,
(in_flags & EF_ARM_EABIMASK) >> 24,
(out_flags & EF_ARM_EABIMASK) >> 24);
return FALSE;
}
/* Not sure what needs to be checked for EABI versions >= 1. */
/* VxWorks libraries do not use these flags. */
if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
&& get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
&& EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
{
if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
{
_bfd_error_handler
(_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
ibfd, obfd,
in_flags & EF_ARM_APCS_26 ? 26 : 32,
out_flags & EF_ARM_APCS_26 ? 26 : 32);
flags_compatible = FALSE;
}
if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
{
if (in_flags & EF_ARM_APCS_FLOAT)
_bfd_error_handler
(_("error: %B passes floats in float registers, whereas %B passes them in integer registers"),
ibfd, obfd);
else
_bfd_error_handler
(_("error: %B passes floats in integer registers, whereas %B passes them in float registers"),
ibfd, obfd);
flags_compatible = FALSE;
}
if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
{
if (in_flags & EF_ARM_VFP_FLOAT)
_bfd_error_handler
(_("error: %B uses VFP instructions, whereas %B does not"),
ibfd, obfd);
else
_bfd_error_handler
(_("error: %B uses FPA instructions, whereas %B does not"),
ibfd, obfd);
flags_compatible = FALSE;
}
if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
{
if (in_flags & EF_ARM_MAVERICK_FLOAT)
_bfd_error_handler
(_("error: %B uses Maverick instructions, whereas %B does not"),
ibfd, obfd);
else
_bfd_error_handler
(_("error: %B does not use Maverick instructions, whereas %B does"),
ibfd, obfd);
flags_compatible = FALSE;
}
#ifdef EF_ARM_SOFT_FLOAT
if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
{
/* We can allow interworking between code that is VFP format
layout, and uses either soft float or integer regs for
passing floating point arguments and results. We already
know that the APCS_FLOAT flags match; similarly for VFP
flags. */
if ((in_flags & EF_ARM_APCS_FLOAT) != 0
|| (in_flags & EF_ARM_VFP_FLOAT) == 0)
{
if (in_flags & EF_ARM_SOFT_FLOAT)
_bfd_error_handler
(_("error: %B uses software FP, whereas %B uses hardware FP"),
ibfd, obfd);
else
_bfd_error_handler
(_("error: %B uses hardware FP, whereas %B uses software FP"),
ibfd, obfd);
flags_compatible = FALSE;
}
}
#endif
/* Interworking mismatch is only a warning. */
if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
{
if (in_flags & EF_ARM_INTERWORK)
{
_bfd_error_handler
(_("Warning: %B supports interworking, whereas %B does not"),
ibfd, obfd);
}
else
{
_bfd_error_handler
(_("Warning: %B does not support interworking, whereas %B does"),
ibfd, obfd);
}
}
}
return flags_compatible;
}
/* Symbian OS Targets. */
#undef TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
#undef TARGET_BIG_SYM
#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME "elf32-bigarm-symbian"
/* Like elf32_arm_link_hash_table_create -- but overrides
appropriately for Symbian OS. */
static struct bfd_link_hash_table *
elf32_arm_symbian_link_hash_table_create (bfd *abfd)
{
struct bfd_link_hash_table *ret;
ret = elf32_arm_link_hash_table_create (abfd);
if (ret)
{
struct elf32_arm_link_hash_table *htab
= (struct elf32_arm_link_hash_table *)ret;
/* There is no PLT header for Symbian OS. */
htab->plt_header_size = 0;
/* The PLT entries are each one instruction and one word. */
htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
htab->symbian_p = 1;
/* Symbian uses armv5t or above, so use_blx is always true. */
htab->use_blx = 1;
htab->root.is_relocatable_executable = 1;
}
return ret;
}
static const struct bfd_elf_special_section
elf32_arm_symbian_special_sections[] =
{
/* In a BPABI executable, the dynamic linking sections do not go in
the loadable read-only segment. The post-linker may wish to
refer to these sections, but they are not part of the final
program image. */
{ STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
{ STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
{ STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
{ STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
{ STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
/* These sections do not need to be writable as the SymbianOS
postlinker will arrange things so that no dynamic relocation is
required. */
{ STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
{ STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
{ STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
{ NULL, 0, 0, 0, 0 }
};
static void
elf32_arm_symbian_begin_write_processing (bfd *abfd,
struct bfd_link_info *link_info)
{
/* BPABI objects are never loaded directly by an OS kernel; they are
processed by a postlinker first, into an OS-specific format. If
the D_PAGED bit is set on the file, BFD will align segments on
page boundaries, so that an OS can directly map the file. With
BPABI objects, that just results in wasted space. In addition,
because we clear the D_PAGED bit, map_sections_to_segments will
recognize that the program headers should not be mapped into any
loadable segment. */
abfd->flags &= ~D_PAGED;
elf32_arm_begin_write_processing (abfd, link_info);
}
static bfd_boolean
elf32_arm_symbian_modify_segment_map (bfd *abfd,
struct bfd_link_info *info)
{
struct elf_segment_map *m;
asection *dynsec;
/* BPABI shared libraries and executables should have a PT_DYNAMIC
segment. However, because the .dynamic section is not marked
with SEC_LOAD, the generic ELF code will not create such a
segment. */
dynsec = bfd_get_section_by_name (abfd, ".dynamic");
if (dynsec)
{
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
if (m->p_type == PT_DYNAMIC)
break;
if (m == NULL)
{
m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
m->next = elf_tdata (abfd)->segment_map;
elf_tdata (abfd)->segment_map = m;
}
}
/* Also call the generic arm routine. */
return elf32_arm_modify_segment_map (abfd, info);
}
/* 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
elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
const arelent *rel ATTRIBUTE_UNUSED)
{
return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
}
#undef elf32_bed
#define elf32_bed elf32_arm_symbian_bed
/* The dynamic sections are not allocated on SymbianOS; the postlinker
will process them and then discard them. */
#undef ELF_DYNAMIC_SEC_FLAGS
#define ELF_DYNAMIC_SEC_FLAGS \
(SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
#undef elf_backend_emit_relocs
#undef bfd_elf32_bfd_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
#undef elf_backend_special_sections
#define elf_backend_special_sections elf32_arm_symbian_special_sections
#undef elf_backend_begin_write_processing
#define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
#undef elf_backend_final_write_processing
#define elf_backend_final_write_processing elf32_arm_final_write_processing
#undef elf_backend_modify_segment_map
#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
/* There is no .got section for BPABI objects, and hence no header. */
#undef elf_backend_got_header_size
#define elf_backend_got_header_size 0
/* Similarly, there is no .got.plt section. */
#undef elf_backend_want_got_plt
#define elf_backend_want_got_plt 0
#undef elf_backend_plt_sym_val
#define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
#undef elf_backend_may_use_rel_p
#define elf_backend_may_use_rel_p 1
#undef elf_backend_may_use_rela_p
#define elf_backend_may_use_rela_p 0
#undef elf_backend_default_use_rela_p
#define elf_backend_default_use_rela_p 0
#undef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym 0
#undef ELF_MAXPAGESIZE
#define ELF_MAXPAGESIZE 0x8000
#include "elf32-target.h"
|