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
|
/* MIPS-specific support for 32-bit ELF
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
<mark@codesourcery.com>
Traditional MIPS targets support added by Koundinya.K, Dansk Data
Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
different MIPS ELF from other targets. This matters when linking.
This file supports both, switching at runtime. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "genlink.h"
#include "elf-bfd.h"
#include "elf/mips.h"
/* Get the ECOFF swapping routines. */
#include "coff/sym.h"
#include "coff/symconst.h"
#include "coff/internal.h"
#include "coff/ecoff.h"
#include "coff/mips.h"
#define ECOFF_SIGNED_32
#include "ecoffswap.h"
/* This structure is used to hold .got information when linking. It
is stored in the tdata field of the bfd_elf_section_data structure. */
struct mips_got_info
{
/* The global symbol in the GOT with the lowest index in the dynamic
symbol table. */
struct elf_link_hash_entry *global_gotsym;
/* The number of global .got entries. */
unsigned int global_gotno;
/* The number of local .got entries. */
unsigned int local_gotno;
/* The number of local .got entries we have used. */
unsigned int assigned_gotno;
};
/* The MIPS ELF linker needs additional information for each symbol in
the global hash table. */
struct mips_elf_link_hash_entry
{
struct elf_link_hash_entry root;
/* External symbol information. */
EXTR esym;
/* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
this symbol. */
unsigned int possibly_dynamic_relocs;
/* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against
a readonly section. */
boolean readonly_reloc;
/* The index of the first dynamic relocation (in the .rel.dyn
section) against this symbol. */
unsigned int min_dyn_reloc_index;
/* We must not create a stub for a symbol that has relocations
related to taking the function's address, i.e. any but
R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition",
p. 4-20. */
boolean no_fn_stub;
/* If there is a stub that 32 bit functions should use to call this
16 bit function, this points to the section containing the stub. */
asection *fn_stub;
/* Whether we need the fn_stub; this is set if this symbol appears
in any relocs other than a 16 bit call. */
boolean need_fn_stub;
/* If there is a stub that 16 bit functions should use to call this
32 bit function, this points to the section containing the stub. */
asection *call_stub;
/* This is like the call_stub field, but it is used if the function
being called returns a floating point value. */
asection *call_fp_stub;
};
static bfd_reloc_status_type mips32_64bit_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static reloc_howto_type *mips_rtype_to_howto
PARAMS ((unsigned int));
static void mips_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
static void mips_info_to_howto_rela
PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
static void bfd_mips_elf32_swap_gptab_in
PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
static void bfd_mips_elf32_swap_gptab_out
PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
#if 0
static void bfd_mips_elf_swap_msym_in
PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
#endif
static void bfd_mips_elf_swap_msym_out
PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
static boolean mips_elf_create_procedure_table
PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
struct ecoff_debug_info *));
static INLINE int elf_mips_isa PARAMS ((flagword));
static INLINE unsigned long elf_mips_mach PARAMS ((flagword));
static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
static boolean mips_elf_is_local_label_name
PARAMS ((bfd *, const char *));
static struct bfd_hash_entry *mips_elf_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static int gptab_compare PARAMS ((const void *, const void *));
static bfd_reloc_status_type mips16_jump_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type mips16_gprel_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static boolean mips_elf_create_compact_rel_section
PARAMS ((bfd *, struct bfd_link_info *));
static boolean mips_elf_create_got_section
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_reloc_status_type mips_elf_final_gp
PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
static bfd_byte *elf32_mips_get_relocated_section_contents
PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
bfd_byte *, boolean, asymbol **));
static asection *mips_elf_create_msym_section
PARAMS ((bfd *));
static void mips_elf_irix6_finish_dynamic_symbol
PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
static bfd_vma mips_elf_high PARAMS ((bfd_vma));
static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
static bfd_vma mips_elf_global_got_index
PARAMS ((bfd *, struct elf_link_hash_entry *));
static bfd_vma mips_elf_local_got_index
PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
static bfd_vma mips_elf_got_offset_from_index
PARAMS ((bfd *, bfd *, bfd_vma));
static boolean mips_elf_record_global_got_symbol
PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
struct mips_got_info *));
static bfd_vma mips_elf_got_page
PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
static const Elf_Internal_Rela *mips_elf_next_relocation
PARAMS ((unsigned int, const Elf_Internal_Rela *,
const Elf_Internal_Rela *));
static bfd_reloc_status_type mips_elf_calculate_relocation
PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
boolean *));
static bfd_vma mips_elf_obtain_contents
PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
static boolean mips_elf_perform_relocation
PARAMS ((struct bfd_link_info *, reloc_howto_type *,
const Elf_Internal_Rela *, bfd_vma,
bfd *, asection *, bfd_byte *, boolean));
static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
static boolean mips_elf_sort_hash_table_f
PARAMS ((struct mips_elf_link_hash_entry *, PTR));
static boolean mips_elf_sort_hash_table
PARAMS ((struct bfd_link_info *, unsigned long));
static asection * mips_elf_got_section PARAMS ((bfd *));
static struct mips_got_info *mips_elf_got_info
PARAMS ((bfd *, asection **));
static boolean mips_elf_local_relocation_p
PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean));
static bfd_vma mips_elf_create_local_got_entry
PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
static bfd_vma mips_elf_got16_entry
PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean));
static boolean mips_elf_create_dynamic_relocation
PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
struct mips_elf_link_hash_entry *, asection *,
bfd_vma, bfd_vma *, asection *));
static void mips_elf_allocate_dynamic_relocations
PARAMS ((bfd *, unsigned int));
static boolean mips_elf_stub_section_p
PARAMS ((bfd *, asection *));
static int sort_dynamic_relocs
PARAMS ((const void *, const void *));
static void _bfd_mips_elf_hide_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static void _bfd_mips_elf_copy_indirect_symbol
PARAMS ((struct elf_link_hash_entry *,
struct elf_link_hash_entry *));
static boolean _bfd_elf32_mips_grok_prstatus
PARAMS ((bfd *, Elf_Internal_Note *));
static boolean _bfd_elf32_mips_grok_psinfo
PARAMS ((bfd *, Elf_Internal_Note *));
extern const bfd_target bfd_elf32_tradbigmips_vec;
extern const bfd_target bfd_elf32_tradlittlemips_vec;
#ifdef BFD64
extern const bfd_target bfd_elf64_tradbigmips_vec;
extern const bfd_target bfd_elf64_tradlittlemips_vec;
#endif
/* The level of IRIX compatibility we're striving for. */
typedef enum {
ict_none,
ict_irix5,
ict_irix6
} irix_compat_t;
/* This will be used when we sort the dynamic relocation records. */
static bfd *reldyn_sorting_bfd;
/* Nonzero if ABFD is using the N32 ABI. */
#define ABI_N32_P(abfd) \
((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
/* Nonzero if ABFD is using the 64-bit ABI. */
#define ABI_64_P(abfd) \
((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0)
/* Depending on the target vector we generate some version of Irix
executables or "normal" MIPS ELF ABI executables. */
#ifdef BFD64
#define IRIX_COMPAT(abfd) \
(((abfd->xvec == &bfd_elf64_tradbigmips_vec) || \
(abfd->xvec == &bfd_elf64_tradlittlemips_vec) || \
(abfd->xvec == &bfd_elf32_tradbigmips_vec) || \
(abfd->xvec == &bfd_elf32_tradlittlemips_vec)) ? ict_none : \
((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5))
#else
#define IRIX_COMPAT(abfd) \
(((abfd->xvec == &bfd_elf32_tradbigmips_vec) || \
(abfd->xvec == &bfd_elf32_tradlittlemips_vec)) ? ict_none : \
((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5))
#endif
/* Whether we are trying to be compatible with IRIX at all. */
#define SGI_COMPAT(abfd) \
(IRIX_COMPAT (abfd) != ict_none)
/* The name of the msym section. */
#define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym"
/* The name of the srdata section. */
#define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata"
/* The name of the options section. */
#define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
(IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options")
/* The name of the stub section. */
#define MIPS_ELF_STUB_SECTION_NAME(abfd) \
(IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub")
/* The name of the dynamic relocation section. */
#define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn"
/* The size of an external REL relocation. */
#define MIPS_ELF_REL_SIZE(abfd) \
(get_elf_backend_data (abfd)->s->sizeof_rel)
/* The size of an external dynamic table entry. */
#define MIPS_ELF_DYN_SIZE(abfd) \
(get_elf_backend_data (abfd)->s->sizeof_dyn)
/* The size of a GOT entry. */
#define MIPS_ELF_GOT_SIZE(abfd) \
(get_elf_backend_data (abfd)->s->arch_size / 8)
/* The size of a symbol-table entry. */
#define MIPS_ELF_SYM_SIZE(abfd) \
(get_elf_backend_data (abfd)->s->sizeof_sym)
/* The default alignment for sections, as a power of two. */
#define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
(get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
/* Get word-sized data. */
#define MIPS_ELF_GET_WORD(abfd, ptr) \
(ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
/* Put out word-sized data. */
#define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
(ABI_64_P (abfd) \
? bfd_put_64 (abfd, val, ptr) \
: bfd_put_32 (abfd, val, ptr))
/* Add a dynamic symbol table-entry. */
#ifdef BFD64
#define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
(ABI_64_P (elf_hash_table (info)->dynobj) \
? bfd_elf64_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val) \
: bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
#else
#define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
(ABI_64_P (elf_hash_table (info)->dynobj) \
? (boolean) (abort (), false) \
: bfd_elf32_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
#endif
/* The number of local .got entries we reserve. */
#define MIPS_RESERVED_GOTNO (2)
/* Instructions which appear in a stub. For some reason the stub is
slightly different on an SGI system. */
#define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
#define STUB_LW(abfd) \
(SGI_COMPAT (abfd) \
? (ABI_64_P (abfd) \
? 0xdf998010 /* ld t9,0x8010(gp) */ \
: 0x8f998010) /* lw t9,0x8010(gp) */ \
: 0x8f998010) /* lw t9,0x8000(gp) */
#define STUB_MOVE(abfd) \
(SGI_COMPAT (abfd) ? 0x03e07825 : 0x03e07821) /* move t7,ra */
#define STUB_JALR 0x0320f809 /* jal t9 */
#define STUB_LI16(abfd) \
(SGI_COMPAT (abfd) ? 0x34180000 : 0x24180000) /* ori t8,zero,0 */
#define MIPS_FUNCTION_STUB_SIZE (16)
#if 0
/* We no longer try to identify particular sections for the .dynsym
section. When we do, we wind up crashing if there are other random
sections with relocations. */
/* Names of sections which appear in the .dynsym section in an Irix 5
executable. */
static const char * const mips_elf_dynsym_sec_names[] =
{
".text",
".init",
".fini",
".data",
".rodata",
".sdata",
".sbss",
".bss",
NULL
};
#define SIZEOF_MIPS_DYNSYM_SECNAMES \
(sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0])
/* The number of entries in mips_elf_dynsym_sec_names which go in the
text segment. */
#define MIPS_TEXT_DYNSYM_SECNO (3)
#endif /* 0 */
/* The names of the runtime procedure table symbols used on Irix 5. */
static const char * const mips_elf_dynsym_rtproc_names[] =
{
"_procedure_table",
"_procedure_string_table",
"_procedure_table_size",
NULL
};
/* These structures are used to generate the .compact_rel section on
Irix 5. */
typedef struct
{
unsigned long id1; /* Always one? */
unsigned long num; /* Number of compact relocation entries. */
unsigned long id2; /* Always two? */
unsigned long offset; /* The file offset of the first relocation. */
unsigned long reserved0; /* Zero? */
unsigned long reserved1; /* Zero? */
} Elf32_compact_rel;
typedef struct
{
bfd_byte id1[4];
bfd_byte num[4];
bfd_byte id2[4];
bfd_byte offset[4];
bfd_byte reserved0[4];
bfd_byte reserved1[4];
} Elf32_External_compact_rel;
typedef struct
{
unsigned int ctype : 1; /* 1: long 0: short format. See below. */
unsigned int rtype : 4; /* Relocation types. See below. */
unsigned int dist2to : 8;
unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
unsigned long konst; /* KONST field. See below. */
unsigned long vaddr; /* VADDR to be relocated. */
} Elf32_crinfo;
typedef struct
{
unsigned int ctype : 1; /* 1: long 0: short format. See below. */
unsigned int rtype : 4; /* Relocation types. See below. */
unsigned int dist2to : 8;
unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
unsigned long konst; /* KONST field. See below. */
} Elf32_crinfo2;
typedef struct
{
bfd_byte info[4];
bfd_byte konst[4];
bfd_byte vaddr[4];
} Elf32_External_crinfo;
typedef struct
{
bfd_byte info[4];
bfd_byte konst[4];
} Elf32_External_crinfo2;
/* These are the constants used to swap the bitfields in a crinfo. */
#define CRINFO_CTYPE (0x1)
#define CRINFO_CTYPE_SH (31)
#define CRINFO_RTYPE (0xf)
#define CRINFO_RTYPE_SH (27)
#define CRINFO_DIST2TO (0xff)
#define CRINFO_DIST2TO_SH (19)
#define CRINFO_RELVADDR (0x7ffff)
#define CRINFO_RELVADDR_SH (0)
/* A compact relocation info has long (3 words) or short (2 words)
formats. A short format doesn't have VADDR field and relvaddr
fields contains ((VADDR - vaddr of the previous entry) >> 2). */
#define CRF_MIPS_LONG 1
#define CRF_MIPS_SHORT 0
/* There are 4 types of compact relocation at least. The value KONST
has different meaning for each type:
(type) (konst)
CT_MIPS_REL32 Address in data
CT_MIPS_WORD Address in word (XXX)
CT_MIPS_GPHI_LO GP - vaddr
CT_MIPS_JMPAD Address to jump
*/
#define CRT_MIPS_REL32 0xa
#define CRT_MIPS_WORD 0xb
#define CRT_MIPS_GPHI_LO 0xc
#define CRT_MIPS_JMPAD 0xd
#define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
#define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
#define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
#define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
static void bfd_elf32_swap_compact_rel_out
PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
static void bfd_elf32_swap_crinfo_out
PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
#define USE_REL 1 /* MIPS uses REL relocations instead of RELA */
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma)0) - 1)
static reloc_howto_type elf_mips_howto_table[] =
{
/* No relocation. */
HOWTO (R_MIPS_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_MIPS_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit relocation. */
HOWTO (R_MIPS_16, /* 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_MIPS_16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* 32 bit relocation. */
HOWTO (R_MIPS_32, /* 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_MIPS_32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
/* 32 bit symbol relative relocation. */
HOWTO (R_MIPS_REL32, /* 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_MIPS_REL32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
/* 26 bit jump address. */
HOWTO (R_MIPS_26, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
/* This needs complex overflow
detection, because the upper four
bits must match the PC + 4. */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_26", /* name */
true, /* partial_inplace */
0x3ffffff, /* src_mask */
0x3ffffff, /* dst_mask */
false), /* pcrel_offset */
/* High 16 bits of symbol value. */
HOWTO (R_MIPS_HI16, /* 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_mips_elf_hi16_reloc, /* special_function */
"R_MIPS_HI16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Low 16 bits of symbol value. */
HOWTO (R_MIPS_LO16, /* 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_mips_elf_lo16_reloc, /* special_function */
"R_MIPS_LO16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* GP relative reference. */
HOWTO (R_MIPS_GPREL16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_gprel16_reloc, /* special_function */
"R_MIPS_GPREL16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Reference to literal section. */
HOWTO (R_MIPS_LITERAL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_gprel16_reloc, /* special_function */
"R_MIPS_LITERAL", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Reference to global offset table. */
HOWTO (R_MIPS_GOT16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_got16_reloc, /* special_function */
"R_MIPS_GOT16", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit PC relative reference. */
HOWTO (R_MIPS_PC16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_PC16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
true), /* pcrel_offset */
/* 16 bit call through global offset table. */
HOWTO (R_MIPS_CALL16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_CALL16", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* 32 bit GP relative reference. */
HOWTO (R_MIPS_GPREL32, /* 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_mips_elf_gprel32_reloc, /* special_function */
"R_MIPS_GPREL32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
/* The remaining relocs are defined on Irix 5, although they are
not defined by the ABI. */
EMPTY_HOWTO (13),
EMPTY_HOWTO (14),
EMPTY_HOWTO (15),
/* A 5 bit shift field. */
HOWTO (R_MIPS_SHIFT5, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
5, /* bitsize */
false, /* pc_relative */
6, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_SHIFT5", /* name */
true, /* partial_inplace */
0x000007c0, /* src_mask */
0x000007c0, /* dst_mask */
false), /* pcrel_offset */
/* A 6 bit shift field. */
/* FIXME: This is not handled correctly; a special function is
needed to put the most significant bit in the right place. */
HOWTO (R_MIPS_SHIFT6, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
6, /* bitsize */
false, /* pc_relative */
6, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_SHIFT6", /* name */
true, /* partial_inplace */
0x000007c4, /* src_mask */
0x000007c4, /* dst_mask */
false), /* pcrel_offset */
/* A 64 bit relocation. */
HOWTO (R_MIPS_64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
mips32_64bit_reloc, /* special_function */
"R_MIPS_64", /* name */
true, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
false), /* pcrel_offset */
/* Displacement in the global offset table. */
HOWTO (R_MIPS_GOT_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_DISP", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* Displacement to page pointer in the global offset table. */
HOWTO (R_MIPS_GOT_PAGE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_PAGE", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* Offset from page pointer in the global offset table. */
HOWTO (R_MIPS_GOT_OFST, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_OFST", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_GOT_HI16, /* 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_MIPS_GOT_HI16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_GOT_LO16, /* 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_MIPS_GOT_LO16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* 64 bit subtraction. Used in the N32 ABI. */
HOWTO (R_MIPS_SUB, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_SUB", /* name */
true, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
false), /* pcrel_offset */
/* Used to cause the linker to insert and delete instructions? */
EMPTY_HOWTO (R_MIPS_INSERT_A),
EMPTY_HOWTO (R_MIPS_INSERT_B),
EMPTY_HOWTO (R_MIPS_DELETE),
/* Get the higher value of a 64 bit addend. */
HOWTO (R_MIPS_HIGHER, /* 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_MIPS_HIGHER", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Get the highest value of a 64 bit addend. */
HOWTO (R_MIPS_HIGHEST, /* 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_MIPS_HIGHEST", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_CALL_HI16, /* 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_MIPS_CALL_HI16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_CALL_LO16, /* 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_MIPS_CALL_LO16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
/* Section displacement. */
HOWTO (R_MIPS_SCN_DISP, /* 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_MIPS_SCN_DISP", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO (R_MIPS_REL16),
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
EMPTY_HOWTO (R_MIPS_PJUMP),
EMPTY_HOWTO (R_MIPS_RELGOT),
/* Protected jump conversion. This is an optimization hint. No
relocation is required for correctness. */
HOWTO (R_MIPS_JALR, /* 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_MIPS_JALR", /* name */
false, /* partial_inplace */
0x00000000, /* src_mask */
0x00000000, /* dst_mask */
false), /* pcrel_offset */
};
/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
is a hack to make the linker think that we need 64 bit values. */
static reloc_howto_type elf_mips_ctor64_howto =
HOWTO (R_MIPS_64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips32_64bit_reloc, /* special_function */
"R_MIPS_64", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false); /* pcrel_offset */
/* The reloc used for the mips16 jump instruction. */
static reloc_howto_type elf_mips16_jump_howto =
HOWTO (R_MIPS16_26, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
/* This needs complex overflow
detection, because the upper four
bits must match the PC. */
mips16_jump_reloc, /* special_function */
"R_MIPS16_26", /* name */
true, /* partial_inplace */
0x3ffffff, /* src_mask */
0x3ffffff, /* dst_mask */
false); /* pcrel_offset */
/* The reloc used for the mips16 gprel instruction. */
static reloc_howto_type elf_mips16_gprel_howto =
HOWTO (R_MIPS16_GPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips16_gprel_reloc, /* special_function */
"R_MIPS16_GPREL", /* name */
true, /* partial_inplace */
0x07ff001f, /* src_mask */
0x07ff001f, /* dst_mask */
false); /* pcrel_offset */
/* GNU extensions for embedded-pic. */
/* High 16 bits of symbol value, pc-relative. */
static reloc_howto_type elf_mips_gnu_rel_hi16 =
HOWTO (R_MIPS_GNU_REL_HI16, /* 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_mips_elf_hi16_reloc, /* special_function */
"R_MIPS_GNU_REL_HI16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
true); /* pcrel_offset */
/* Low 16 bits of symbol value, pc-relative. */
static reloc_howto_type elf_mips_gnu_rel_lo16 =
HOWTO (R_MIPS_GNU_REL_LO16, /* 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_mips_elf_lo16_reloc, /* special_function */
"R_MIPS_GNU_REL_LO16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
true); /* pcrel_offset */
/* 16 bit offset for pc-relative branches. */
static reloc_howto_type elf_mips_gnu_rel16_s2 =
HOWTO (R_MIPS_GNU_REL16_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_GNU_REL16_S2", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
true); /* pcrel_offset */
/* 64 bit pc-relative. */
static reloc_howto_type elf_mips_gnu_pcrel64 =
HOWTO (R_MIPS_PC64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_PC64", /* name */
true, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
true); /* pcrel_offset */
/* 32 bit pc-relative. */
static reloc_howto_type elf_mips_gnu_pcrel32 =
HOWTO (R_MIPS_PC32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_PC32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
true); /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
static reloc_howto_type elf_mips_gnu_vtinherit_howto =
HOWTO (R_MIPS_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_MIPS_GNU_VTINHERIT", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false); /* pcrel_offset */
/* GNU extension to record C++ vtable member usage */
static reloc_howto_type elf_mips_gnu_vtentry_howto =
HOWTO (R_MIPS_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_MIPS_GNU_VTENTRY", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false); /* pcrel_offset */
/* Do a R_MIPS_HI16 relocation. This has to be done in combination
with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
the HI16. Here we just save the information we need; we do the
actual relocation when we see the LO16. MIPS ELF requires that the
LO16 immediately follow the HI16. As a GNU extension, we permit an
arbitrary number of HI16 relocs to be associated with a single LO16
reloc. This extension permits gcc to output the HI and LO relocs
itself. */
struct mips_hi16
{
struct mips_hi16 *next;
bfd_byte *addr;
bfd_vma addend;
};
/* FIXME: This should not be a static variable. */
static struct mips_hi16 *mips_hi16_list;
bfd_reloc_status_type
_bfd_mips_elf_hi16_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
error_message)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
bfd_reloc_status_type ret;
bfd_vma relocation;
struct mips_hi16 *n;
/* If we're relocating, and this an external symbol, we don't want
to change anything. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& reloc_entry->addend == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
ret = bfd_reloc_ok;
if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
{
boolean relocateable;
bfd_vma gp;
if (ret == bfd_reloc_undefined)
abort ();
if (output_bfd != NULL)
relocateable = true;
else
{
relocateable = false;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
error_message, &gp);
if (ret != bfd_reloc_ok)
return ret;
relocation = gp - reloc_entry->address;
}
else
{
if (bfd_is_und_section (symbol->section)
&& output_bfd == (bfd *) NULL)
ret = bfd_reloc_undefined;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
}
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc_entry->addend;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
/* Save the information, and let LO16 do the actual relocation. */
n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n);
if (n == NULL)
return bfd_reloc_outofrange;
n->addr = (bfd_byte *) data + reloc_entry->address;
n->addend = relocation;
n->next = mips_hi16_list;
mips_hi16_list = n;
if (output_bfd != (bfd *) NULL)
reloc_entry->address += input_section->output_offset;
return ret;
}
/* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit
inplace relocation; this function exists in order to do the
R_MIPS_HI16 relocation described above. */
bfd_reloc_status_type
_bfd_mips_elf_lo16_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
arelent gp_disp_relent;
if (mips_hi16_list != NULL)
{
struct mips_hi16 *l;
l = mips_hi16_list;
while (l != NULL)
{
unsigned long insn;
unsigned long val;
unsigned long vallo;
struct mips_hi16 *next;
/* Do the HI16 relocation. Note that we actually don't need
to know anything about the LO16 itself, except where to
find the low 16 bits of the addend needed by the LO16. */
insn = bfd_get_32 (abfd, l->addr);
vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
& 0xffff);
val = ((insn & 0xffff) << 16) + vallo;
val += l->addend;
/* The low order 16 bits are always treated as a signed
value. Therefore, a negative value in the low order bits
requires an adjustment in the high order bits. We need
to make this adjustment in two ways: once for the bits we
took from the data, and once for the bits we are putting
back in to the data. */
if ((vallo & 0x8000) != 0)
val -= 0x10000;
if ((val & 0x8000) != 0)
val += 0x10000;
insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
bfd_put_32 (abfd, (bfd_vma) insn, l->addr);
if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
{
gp_disp_relent = *reloc_entry;
reloc_entry = &gp_disp_relent;
reloc_entry->addend = l->addend;
}
next = l->next;
free (l);
l = next;
}
mips_hi16_list = NULL;
}
else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
{
bfd_reloc_status_type ret;
bfd_vma gp, relocation;
/* FIXME: Does this case ever occur? */
ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp);
if (ret != bfd_reloc_ok)
return ret;
relocation = gp - reloc_entry->address;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc_entry->addend;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
gp_disp_relent = *reloc_entry;
reloc_entry = &gp_disp_relent;
reloc_entry->addend = relocation - 4;
}
/* Now do the LO16 reloc in the usual way. */
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
}
/* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
table used for PIC code. If the symbol is an external symbol, the
instruction is modified to contain the offset of the appropriate
entry in the global offset table. If the symbol is a section
symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
addends are combined to form the real addend against the section
symbol; the GOT16 is modified to contain the offset of an entry in
the global offset table, and the LO16 is modified to offset it
appropriately. Thus an offset larger than 16 bits requires a
modified value in the global offset table.
This implementation suffices for the assembler, but the linker does
not yet know how to create global offset tables. */
bfd_reloc_status_type
_bfd_mips_elf_got16_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
/* If we're relocating, and this an external symbol, we don't want
to change anything. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& reloc_entry->addend == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* If we're relocating, and this is a local symbol, we can handle it
just like HI16. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) != 0)
return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
abort ();
}
/* Set the GP value for OUTPUT_BFD. Returns false if this is a
dangerous relocation. */
static boolean
mips_elf_assign_gp (output_bfd, pgp)
bfd *output_bfd;
bfd_vma *pgp;
{
unsigned int count;
asymbol **sym;
unsigned int i;
/* If we've already figured out what GP will be, just return it. */
*pgp = _bfd_get_gp_value (output_bfd);
if (*pgp)
return true;
count = bfd_get_symcount (output_bfd);
sym = bfd_get_outsymbols (output_bfd);
/* The linker script will have created a symbol named `_gp' with the
appropriate value. */
if (sym == (asymbol **) NULL)
i = count;
else
{
for (i = 0; i < count; i++, sym++)
{
register const char *name;
name = bfd_asymbol_name (*sym);
if (*name == '_' && strcmp (name, "_gp") == 0)
{
*pgp = bfd_asymbol_value (*sym);
_bfd_set_gp_value (output_bfd, *pgp);
break;
}
}
}
if (i >= count)
{
/* Only get the error once. */
*pgp = 4;
_bfd_set_gp_value (output_bfd, *pgp);
return false;
}
return true;
}
/* We have to figure out the gp value, so that we can adjust the
symbol value correctly. We look up the symbol _gp in the output
BFD. If we can't find it, we're stuck. We cache it in the ELF
target data. We don't need to adjust the symbol value for an
external symbol if we are producing relocateable output. */
static bfd_reloc_status_type
mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
bfd *output_bfd;
asymbol *symbol;
boolean relocateable;
char **error_message;
bfd_vma *pgp;
{
if (bfd_is_und_section (symbol->section)
&& ! relocateable)
{
*pgp = 0;
return bfd_reloc_undefined;
}
*pgp = _bfd_get_gp_value (output_bfd);
if (*pgp == 0
&& (! relocateable
|| (symbol->flags & BSF_SECTION_SYM) != 0))
{
if (relocateable)
{
/* Make up a value. */
*pgp = symbol->section->output_section->vma + 0x4000;
_bfd_set_gp_value (output_bfd, *pgp);
}
else if (!mips_elf_assign_gp (output_bfd, pgp))
{
*error_message =
(char *) _("GP relative relocation when _gp not defined");
return bfd_reloc_dangerous;
}
}
return bfd_reloc_ok;
}
/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
become the offset from the gp register. This function also handles
R_MIPS_LITERAL relocations, although those can be handled more
cleverly because the entries in the .lit8 and .lit4 sections can be
merged. */
static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *,
arelent *, asection *,
boolean, PTR, bfd_vma));
bfd_reloc_status_type
_bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
boolean relocateable;
bfd_reloc_status_type ret;
bfd_vma gp;
/* If we're relocating, and this is an external symbol with no
addend, we don't want to change anything. We will only have an
addend if this is a newly created reloc, not read from an ELF
file. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& reloc_entry->addend == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (output_bfd != (bfd *) NULL)
relocateable = true;
else
{
relocateable = false;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
return gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
relocateable, data, gp);
}
static bfd_reloc_status_type
gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
gp)
bfd *abfd;
asymbol *symbol;
arelent *reloc_entry;
asection *input_section;
boolean relocateable;
PTR data;
bfd_vma gp;
{
bfd_vma relocation;
unsigned long insn;
unsigned long val;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
/* Set val to the offset into the section or symbol. */
if (reloc_entry->howto->src_mask == 0)
{
/* This case occurs with the 64-bit MIPS ELF ABI. */
val = reloc_entry->addend;
}
else
{
val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
if (val & 0x8000)
val -= 0x10000;
}
/* Adjust val for the final section location and GP value. If we
are producing relocateable output, we don't want to do this for
an external symbol. */
if (! relocateable
|| (symbol->flags & BSF_SECTION_SYM) != 0)
val += relocation - gp;
insn = (insn &~ (bfd_vma) 0xffff) | (val & 0xffff);
bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + reloc_entry->address);
if (relocateable)
reloc_entry->address += input_section->output_offset;
/* Make sure it fit in 16 bits. */
if ((long) val >= 0x8000 || (long) val < -0x8000)
return bfd_reloc_overflow;
return bfd_reloc_ok;
}
/* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
from the gp register? XXX */
static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *,
arelent *, asection *,
boolean, PTR, bfd_vma));
bfd_reloc_status_type
_bfd_mips_elf_gprel32_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
boolean relocateable;
bfd_reloc_status_type ret;
bfd_vma gp;
/* If we're relocating, and this is an external symbol with no
addend, we don't want to change anything. We will only have an
addend if this is a newly created reloc, not read from an ELF
file. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& reloc_entry->addend == 0)
{
*error_message = (char *)
_("32bits gp relative relocation occurs for an external symbol");
return bfd_reloc_outofrange;
}
if (output_bfd != (bfd *) NULL)
{
relocateable = true;
gp = _bfd_get_gp_value (output_bfd);
}
else
{
relocateable = false;
output_bfd = symbol->section->output_section->owner;
ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
error_message, &gp);
if (ret != bfd_reloc_ok)
return ret;
}
return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
relocateable, data, gp);
}
static bfd_reloc_status_type
gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
gp)
bfd *abfd;
asymbol *symbol;
arelent *reloc_entry;
asection *input_section;
boolean relocateable;
PTR data;
bfd_vma gp;
{
bfd_vma relocation;
unsigned long val;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
if (reloc_entry->howto->src_mask == 0)
{
/* This case arises with the 64-bit MIPS ELF ABI. */
val = 0;
}
else
val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
/* Set val to the offset into the section or symbol. */
val += reloc_entry->addend;
/* Adjust val for the final section location and GP value. If we
are producing relocateable output, we don't want to do this for
an external symbol. */
if (! relocateable
|| (symbol->flags & BSF_SECTION_SYM) != 0)
val += relocation - gp;
bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address);
if (relocateable)
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
generated when addresses are 64 bits. The upper 32 bits are a simple
sign extension. */
static bfd_reloc_status_type
mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
bfd_reloc_status_type r;
arelent reloc32;
unsigned long val;
bfd_size_type addr;
r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
if (r != bfd_reloc_continue)
return r;
/* Do a normal 32 bit relocation on the lower 32 bits. */
reloc32 = *reloc_entry;
if (bfd_big_endian (abfd))
reloc32.address += 4;
reloc32.howto = &elf_mips_howto_table[R_MIPS_32];
r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
output_bfd, error_message);
/* Sign extend into the upper 32 bits. */
val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
if ((val & 0x80000000) != 0)
val = 0xffffffff;
else
val = 0;
addr = reloc_entry->address;
if (bfd_little_endian (abfd))
addr += 4;
bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr);
return r;
}
/* Handle a mips16 jump. */
static bfd_reloc_status_type
mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol;
PTR data ATTRIBUTE_UNUSED;
asection *input_section;
bfd *output_bfd;
char **error_message ATTRIBUTE_UNUSED;
{
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& reloc_entry->addend == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* FIXME. */
{
static boolean warned;
if (! warned)
(*_bfd_error_handler)
(_("Linking mips16 objects into %s format is not supported"),
bfd_get_target (input_section->output_section->owner));
warned = true;
}
return bfd_reloc_undefined;
}
/* Handle a mips16 GP relative reloc. */
static bfd_reloc_status_type
mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
boolean relocateable;
bfd_reloc_status_type ret;
bfd_vma gp;
unsigned short extend, insn;
unsigned long final;
/* If we're relocating, and this is an external symbol with no
addend, we don't want to change anything. We will only have an
addend if this is a newly created reloc, not read from an ELF
file. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& reloc_entry->addend == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (output_bfd != NULL)
relocateable = true;
else
{
relocateable = false;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
/* Pick up the mips16 extend instruction and the real instruction. */
extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
/* Stuff the current addend back as a 32 bit value, do the usual
relocation, and then clean up. */
bfd_put_32 (abfd,
(bfd_vma) (((extend & 0x1f) << 11)
| (extend & 0x7e0)
| (insn & 0x1f)),
(bfd_byte *) data + reloc_entry->address);
ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
relocateable, data, gp);
final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bfd_put_16 (abfd,
(bfd_vma) ((extend & 0xf800)
| ((final >> 11) & 0x1f)
| (final & 0x7e0)),
(bfd_byte *) data + reloc_entry->address);
bfd_put_16 (abfd,
(bfd_vma) ((insn & 0xffe0)
| (final & 0x1f)),
(bfd_byte *) data + reloc_entry->address + 2);
return ret;
}
/* Return the ISA for a MIPS e_flags value. */
static INLINE int
elf_mips_isa (flags)
flagword flags;
{
switch (flags & EF_MIPS_ARCH)
{
case E_MIPS_ARCH_1:
return 1;
case E_MIPS_ARCH_2:
return 2;
case E_MIPS_ARCH_3:
return 3;
case E_MIPS_ARCH_4:
return 4;
case E_MIPS_ARCH_5:
return 5;
case E_MIPS_ARCH_32:
return 32;
case E_MIPS_ARCH_64:
return 64;
}
return 4;
}
/* Return the MACH for a MIPS e_flags value. */
static INLINE unsigned long
elf_mips_mach (flags)
flagword flags;
{
switch (flags & EF_MIPS_MACH)
{
case E_MIPS_MACH_3900:
return bfd_mach_mips3900;
case E_MIPS_MACH_4010:
return bfd_mach_mips4010;
case E_MIPS_MACH_4100:
return bfd_mach_mips4100;
case E_MIPS_MACH_4111:
return bfd_mach_mips4111;
case E_MIPS_MACH_4650:
return bfd_mach_mips4650;
case E_MIPS_MACH_SB1:
return bfd_mach_mips_sb1;
default:
switch (flags & EF_MIPS_ARCH)
{
default:
case E_MIPS_ARCH_1:
return bfd_mach_mips3000;
break;
case E_MIPS_ARCH_2:
return bfd_mach_mips6000;
break;
case E_MIPS_ARCH_3:
return bfd_mach_mips4000;
break;
case E_MIPS_ARCH_4:
return bfd_mach_mips8000;
break;
case E_MIPS_ARCH_5:
return bfd_mach_mips5;
break;
case E_MIPS_ARCH_32:
return bfd_mach_mipsisa32;
break;
case E_MIPS_ARCH_64:
return bfd_mach_mipsisa64;
break;
}
}
return 0;
}
/* Return printable name for ABI. */
static INLINE char *
elf_mips_abi_name (abfd)
bfd *abfd;
{
flagword flags;
flags = elf_elfheader (abfd)->e_flags;
switch (flags & EF_MIPS_ABI)
{
case 0:
if (ABI_N32_P (abfd))
return "N32";
else if (ABI_64_P (abfd))
return "64";
else
return "none";
case E_MIPS_ABI_O32:
return "O32";
case E_MIPS_ABI_O64:
return "O64";
case E_MIPS_ABI_EABI32:
return "EABI32";
case E_MIPS_ABI_EABI64:
return "EABI64";
default:
return "unknown abi";
}
}
/* A mapping from BFD reloc types to MIPS ELF reloc types. */
struct elf_reloc_map {
bfd_reloc_code_real_type bfd_reloc_val;
enum elf_mips_reloc_type elf_reloc_val;
};
static const struct elf_reloc_map mips_reloc_map[] =
{
{ BFD_RELOC_NONE, R_MIPS_NONE, },
{ BFD_RELOC_16, R_MIPS_16 },
{ BFD_RELOC_32, R_MIPS_32 },
{ BFD_RELOC_64, R_MIPS_64 },
{ BFD_RELOC_MIPS_JMP, R_MIPS_26 },
{ BFD_RELOC_HI16_S, R_MIPS_HI16 },
{ BFD_RELOC_LO16, R_MIPS_LO16 },
{ BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 },
{ BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
{ BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
{ BFD_RELOC_16_PCREL, R_MIPS_PC16 },
{ BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
{ BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 },
{ BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
{ BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
{ BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
{ BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
{ BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
{ BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
{ BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
{ BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
};
/* Given a BFD reloc type, return a howto structure. */
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
unsigned int i;
for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++)
{
if (mips_reloc_map[i].bfd_reloc_val == code)
return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val];
}
switch (code)
{
default:
bfd_set_error (bfd_error_bad_value);
return NULL;
case BFD_RELOC_CTOR:
/* We need to handle BFD_RELOC_CTOR specially.
Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
size of addresses on this architecture. */
if (bfd_arch_bits_per_address (abfd) == 32)
return &elf_mips_howto_table[(int) R_MIPS_32];
else
return &elf_mips_ctor64_howto;
case BFD_RELOC_MIPS16_JMP:
return &elf_mips16_jump_howto;
case BFD_RELOC_MIPS16_GPREL:
return &elf_mips16_gprel_howto;
case BFD_RELOC_VTABLE_INHERIT:
return &elf_mips_gnu_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
return &elf_mips_gnu_vtentry_howto;
case BFD_RELOC_PCREL_HI16_S:
return &elf_mips_gnu_rel_hi16;
case BFD_RELOC_PCREL_LO16:
return &elf_mips_gnu_rel_lo16;
case BFD_RELOC_16_PCREL_S2:
return &elf_mips_gnu_rel16_s2;
case BFD_RELOC_64_PCREL:
return &elf_mips_gnu_pcrel64;
case BFD_RELOC_32_PCREL:
return &elf_mips_gnu_pcrel32;
}
}
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
static reloc_howto_type *
mips_rtype_to_howto (r_type)
unsigned int r_type;
{
switch (r_type)
{
case R_MIPS16_26:
return &elf_mips16_jump_howto;
break;
case R_MIPS16_GPREL:
return &elf_mips16_gprel_howto;
break;
case R_MIPS_GNU_VTINHERIT:
return &elf_mips_gnu_vtinherit_howto;
break;
case R_MIPS_GNU_VTENTRY:
return &elf_mips_gnu_vtentry_howto;
break;
case R_MIPS_GNU_REL_HI16:
return &elf_mips_gnu_rel_hi16;
break;
case R_MIPS_GNU_REL_LO16:
return &elf_mips_gnu_rel_lo16;
break;
case R_MIPS_GNU_REL16_S2:
return &elf_mips_gnu_rel16_s2;
break;
case R_MIPS_PC64:
return &elf_mips_gnu_pcrel64;
break;
case R_MIPS_PC32:
return &elf_mips_gnu_pcrel32;
break;
default:
BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
return &elf_mips_howto_table[r_type];
break;
}
}
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
static void
mips_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf32_Internal_Rel *dst;
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
cache_ptr->howto = mips_rtype_to_howto (r_type);
/* The addend for a GPREL16 or LITERAL relocation comes from the GP
value for the object file. We get the addend now, rather than
when we do the relocation, because the symbol manipulations done
by the linker may cause us to lose track of the input BFD. */
if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
&& (r_type == (unsigned int) R_MIPS_GPREL16
|| r_type == (unsigned int) R_MIPS_LITERAL))
cache_ptr->addend = elf_gp (abfd);
}
/* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */
static void
mips_info_to_howto_rela (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf32_Internal_Rela *dst;
{
/* Since an Elf32_Internal_Rel is an initial prefix of an
Elf32_Internal_Rela, we can just use mips_info_to_howto_rel
above. */
mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst);
/* If we ever need to do any extra processing with dst->r_addend
(the field omitted in an Elf32_Internal_Rel) we can do it here. */
}
/* A .reginfo section holds a single Elf32_RegInfo structure. These
routines swap this structure in and out. They are used outside of
BFD, so they are globally visible. */
void
bfd_mips_elf32_swap_reginfo_in (abfd, ex, in)
bfd *abfd;
const Elf32_External_RegInfo *ex;
Elf32_RegInfo *in;
{
in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value);
}
void
bfd_mips_elf32_swap_reginfo_out (abfd, in, ex)
bfd *abfd;
const Elf32_RegInfo *in;
Elf32_External_RegInfo *ex;
{
H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value);
}
/* In the 64 bit ABI, the .MIPS.options section holds register
information in an Elf64_Reginfo structure. These routines swap
them in and out. They are globally visible because they are used
outside of BFD. These routines are here so that gas can call them
without worrying about whether the 64 bit ABI has been included. */
void
bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
bfd *abfd;
const Elf64_External_RegInfo *ex;
Elf64_Internal_RegInfo *in;
{
in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask);
in->ri_pad = H_GET_32 (abfd, ex->ri_pad);
in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]);
in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]);
in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]);
in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]);
in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value);
}
void
bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
bfd *abfd;
const Elf64_Internal_RegInfo *in;
Elf64_External_RegInfo *ex;
{
H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask);
H_PUT_32 (abfd, in->ri_pad, ex->ri_pad);
H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]);
H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]);
H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]);
H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]);
H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value);
}
/* Swap an entry in a .gptab section. Note that these routines rely
on the equivalence of the two elements of the union. */
static void
bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
bfd *abfd;
const Elf32_External_gptab *ex;
Elf32_gptab *in;
{
in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value);
in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes);
}
static void
bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
bfd *abfd;
const Elf32_gptab *in;
Elf32_External_gptab *ex;
{
H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value);
H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes);
}
static void
bfd_elf32_swap_compact_rel_out (abfd, in, ex)
bfd *abfd;
const Elf32_compact_rel *in;
Elf32_External_compact_rel *ex;
{
H_PUT_32 (abfd, in->id1, ex->id1);
H_PUT_32 (abfd, in->num, ex->num);
H_PUT_32 (abfd, in->id2, ex->id2);
H_PUT_32 (abfd, in->offset, ex->offset);
H_PUT_32 (abfd, in->reserved0, ex->reserved0);
H_PUT_32 (abfd, in->reserved1, ex->reserved1);
}
static void
bfd_elf32_swap_crinfo_out (abfd, in, ex)
bfd *abfd;
const Elf32_crinfo *in;
Elf32_External_crinfo *ex;
{
unsigned long l;
l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
| ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
| ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
| ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
H_PUT_32 (abfd, l, ex->info);
H_PUT_32 (abfd, in->konst, ex->konst);
H_PUT_32 (abfd, in->vaddr, ex->vaddr);
}
/* Swap in an options header. */
void
bfd_mips_elf_swap_options_in (abfd, ex, in)
bfd *abfd;
const Elf_External_Options *ex;
Elf_Internal_Options *in;
{
in->kind = H_GET_8 (abfd, ex->kind);
in->size = H_GET_8 (abfd, ex->size);
in->section = H_GET_16 (abfd, ex->section);
in->info = H_GET_32 (abfd, ex->info);
}
/* Swap out an options header. */
void
bfd_mips_elf_swap_options_out (abfd, in, ex)
bfd *abfd;
const Elf_Internal_Options *in;
Elf_External_Options *ex;
{
H_PUT_8 (abfd, in->kind, ex->kind);
H_PUT_8 (abfd, in->size, ex->size);
H_PUT_16 (abfd, in->section, ex->section);
H_PUT_32 (abfd, in->info, ex->info);
}
#if 0
/* Swap in an MSYM entry. */
static void
bfd_mips_elf_swap_msym_in (abfd, ex, in)
bfd *abfd;
const Elf32_External_Msym *ex;
Elf32_Internal_Msym *in;
{
in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value);
in->ms_info = H_GET_32 (abfd, ex->ms_info);
}
#endif
/* Swap out an MSYM entry. */
static void
bfd_mips_elf_swap_msym_out (abfd, in, ex)
bfd *abfd;
const Elf32_Internal_Msym *in;
Elf32_External_Msym *ex;
{
H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
H_PUT_32 (abfd, in->ms_info, ex->ms_info);
}
/* Determine whether a symbol is global for the purposes of splitting
the symbol table into global symbols and local symbols. At least
on Irix 5, this split must be between section symbols and all other
symbols. On most ELF targets the split is between static symbols
and externally visible symbols. */
static boolean
mips_elf_sym_is_global (abfd, sym)
bfd *abfd ATTRIBUTE_UNUSED;
asymbol *sym;
{
if (SGI_COMPAT (abfd))
return (sym->flags & BSF_SECTION_SYM) == 0;
else
return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
|| bfd_is_und_section (bfd_get_section (sym))
|| bfd_is_com_section (bfd_get_section (sym)));
}
/* Set the right machine number for a MIPS ELF file. This is used for
both the 32-bit and the 64-bit ABI. */
boolean
_bfd_mips_elf_object_p (abfd)
bfd *abfd;
{
/* Irix 5 and 6 is broken. Object file symbol tables are not always
sorted correctly such that local symbols precede global symbols,
and the sh_info field in the symbol table is not always right. */
if (SGI_COMPAT(abfd))
elf_bad_symtab (abfd) = true;
bfd_default_set_arch_mach (abfd, bfd_arch_mips,
elf_mips_mach (elf_elfheader (abfd)->e_flags));
return true;
}
/* The final processing done just before writing out a MIPS ELF object
file. This gets the MIPS architecture right based on the machine
number. This is used by both the 32-bit and the 64-bit ABI. */
void
_bfd_mips_elf_final_write_processing (abfd, linker)
bfd *abfd;
boolean linker ATTRIBUTE_UNUSED;
{
unsigned long val;
unsigned int i;
Elf_Internal_Shdr **hdrpp;
const char *name;
asection *sec;
switch (bfd_get_mach (abfd))
{
default:
case bfd_mach_mips3000:
val = E_MIPS_ARCH_1;
break;
case bfd_mach_mips3900:
val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900;
break;
case bfd_mach_mips6000:
val = E_MIPS_ARCH_2;
break;
case bfd_mach_mips4000:
case bfd_mach_mips4300:
case bfd_mach_mips4400:
case bfd_mach_mips4600:
val = E_MIPS_ARCH_3;
break;
case bfd_mach_mips4010:
val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010;
break;
case bfd_mach_mips4100:
val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100;
break;
case bfd_mach_mips4111:
val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
break;
case bfd_mach_mips4650:
val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
break;
case bfd_mach_mips5000:
case bfd_mach_mips8000:
case bfd_mach_mips10000:
case bfd_mach_mips12000:
val = E_MIPS_ARCH_4;
break;
case bfd_mach_mips5:
val = E_MIPS_ARCH_5;
break;
case bfd_mach_mips_sb1:
val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1;
break;
case bfd_mach_mipsisa32:
val = E_MIPS_ARCH_32;
break;
case bfd_mach_mipsisa64:
val = E_MIPS_ARCH_64;
}
elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
elf_elfheader (abfd)->e_flags |= val;
/* Set the sh_info field for .gptab sections and other appropriate
info for each special section. */
for (i = 1, hdrpp = elf_elfsections (abfd) + 1;
i < elf_elfheader (abfd)->e_shnum;
i++, hdrpp++)
{
switch ((*hdrpp)->sh_type)
{
case SHT_MIPS_MSYM:
case SHT_MIPS_LIBLIST:
sec = bfd_get_section_by_name (abfd, ".dynstr");
if (sec != NULL)
(*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
break;
case SHT_MIPS_GPTAB:
BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
BFD_ASSERT (name != NULL
&& strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0);
sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1);
BFD_ASSERT (sec != NULL);
(*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
break;
case SHT_MIPS_CONTENT:
BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
BFD_ASSERT (name != NULL
&& strncmp (name, ".MIPS.content",
sizeof ".MIPS.content" - 1) == 0);
sec = bfd_get_section_by_name (abfd,
name + sizeof ".MIPS.content" - 1);
BFD_ASSERT (sec != NULL);
(*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
break;
case SHT_MIPS_SYMBOL_LIB:
sec = bfd_get_section_by_name (abfd, ".dynsym");
if (sec != NULL)
(*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
sec = bfd_get_section_by_name (abfd, ".liblist");
if (sec != NULL)
(*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
break;
case SHT_MIPS_EVENTS:
BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
BFD_ASSERT (name != NULL);
if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0)
sec = bfd_get_section_by_name (abfd,
name + sizeof ".MIPS.events" - 1);
else
{
BFD_ASSERT (strncmp (name, ".MIPS.post_rel",
sizeof ".MIPS.post_rel" - 1) == 0);
sec = bfd_get_section_by_name (abfd,
(name
+ sizeof ".MIPS.post_rel" - 1));
}
BFD_ASSERT (sec != NULL);
(*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
break;
}
}
}
/* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
boolean
_bfd_mips_elf_set_private_flags (abfd, flags)
bfd *abfd;
flagword flags;
{
BFD_ASSERT (!elf_flags_init (abfd)
|| elf_elfheader (abfd)->e_flags == flags);
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = true;
return true;
}
/* Copy backend specific data from one object module to another */
boolean
_bfd_mips_elf_copy_private_bfd_data (ibfd, obfd)
bfd *ibfd;
bfd *obfd;
{
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return true;
BFD_ASSERT (!elf_flags_init (obfd)
|| (elf_elfheader (obfd)->e_flags
== elf_elfheader (ibfd)->e_flags));
elf_gp (obfd) = elf_gp (ibfd);
elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
elf_flags_init (obfd) = true;
return true;
}
/* Merge backend specific data from an object file to the output
object file when linking. */
boolean
_bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
bfd *ibfd;
bfd *obfd;
{
flagword old_flags;
flagword new_flags;
boolean ok;
boolean null_input_bfd = true;
asection *sec;
/* Check if we have the same endianess */
if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
return false;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return true;
new_flags = elf_elfheader (ibfd)->e_flags;
elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
old_flags = elf_elfheader (obfd)->e_flags;
if (! elf_flags_init (obfd))
{
elf_flags_init (obfd) = true;
elf_elfheader (obfd)->e_flags = new_flags;
elf_elfheader (obfd)->e_ident[EI_CLASS]
= elf_elfheader (ibfd)->e_ident[EI_CLASS];
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
{
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
bfd_get_mach (ibfd)))
return false;
}
return true;
}
/* Check flag compatibility. */
new_flags &= ~EF_MIPS_NOREORDER;
old_flags &= ~EF_MIPS_NOREORDER;
if (new_flags == old_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 incompatibility. */
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
{
/* Ignore synthetic sections and empty .text, .data and .bss sections
which are automatically generated by gas. */
if (strcmp (sec->name, ".reginfo")
&& strcmp (sec->name, ".mdebug")
&& ((!strcmp (sec->name, ".text")
|| !strcmp (sec->name, ".data")
|| !strcmp (sec->name, ".bss"))
&& sec->_raw_size != 0))
{
null_input_bfd = false;
break;
}
}
if (null_input_bfd)
return true;
ok = true;
if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
{
new_flags &= ~EF_MIPS_PIC;
old_flags &= ~EF_MIPS_PIC;
(*_bfd_error_handler)
(_("%s: linking PIC files with non-PIC files"),
bfd_archive_filename (ibfd));
ok = false;
}
if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
{
new_flags &= ~EF_MIPS_CPIC;
old_flags &= ~EF_MIPS_CPIC;
(*_bfd_error_handler)
(_("%s: linking abicalls files with non-abicalls files"),
bfd_archive_filename (ibfd));
ok = false;
}
/* Compare the ISA's. */
if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))
!= (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)))
{
int new_mach = new_flags & EF_MIPS_MACH;
int old_mach = old_flags & EF_MIPS_MACH;
int new_isa = elf_mips_isa (new_flags);
int old_isa = elf_mips_isa (old_flags);
/* If either has no machine specified, just compare the general isa's.
Some combinations of machines are ok, if the isa's match. */
if (! new_mach
|| ! old_mach
|| new_mach == old_mach
)
{
/* Don't warn about mixing code using 32-bit ISAs, or mixing code
using 64-bit ISAs. They will normally use the same data sizes
and calling conventions. */
if (( (new_isa == 1 || new_isa == 2 || new_isa == 32)
^ (old_isa == 1 || old_isa == 2 || old_isa == 32)) != 0)
{
(*_bfd_error_handler)
(_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"),
bfd_archive_filename (ibfd), new_isa, old_isa);
ok = false;
}
}
else
{
(*_bfd_error_handler)
(_("%s: ISA mismatch (%d) with previous modules (%d)"),
bfd_archive_filename (ibfd),
elf_mips_mach (new_flags),
elf_mips_mach (old_flags));
ok = false;
}
new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
}
/* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
does set EI_CLASS differently from any 32-bit ABI. */
if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
|| (elf_elfheader (ibfd)->e_ident[EI_CLASS]
!= elf_elfheader (obfd)->e_ident[EI_CLASS]))
{
/* Only error if both are set (to different values). */
if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
|| (elf_elfheader (ibfd)->e_ident[EI_CLASS]
!= elf_elfheader (obfd)->e_ident[EI_CLASS]))
{
(*_bfd_error_handler)
(_("%s: ABI mismatch: linking %s module with previous %s modules"),
bfd_archive_filename (ibfd),
elf_mips_abi_name (ibfd),
elf_mips_abi_name (obfd));
ok = false;
}
new_flags &= ~EF_MIPS_ABI;
old_flags &= ~EF_MIPS_ABI;
}
/* Warn about any other mismatches */
if (new_flags != old_flags)
{
(*_bfd_error_handler)
(_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
bfd_archive_filename (ibfd), (unsigned long) new_flags,
(unsigned long) old_flags);
ok = false;
}
if (! ok)
{
bfd_set_error (bfd_error_bad_value);
return false;
}
return true;
}
boolean
_bfd_mips_elf_print_private_bfd_data (abfd, ptr)
bfd *abfd;
PTR ptr;
{
FILE *file = (FILE *) ptr;
BFD_ASSERT (abfd != NULL && ptr != NULL);
/* Print normal ELF private data. */
_bfd_elf_print_private_bfd_data (abfd, ptr);
/* xgettext:c-format */
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
fprintf (file, _(" [abi=O32]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
fprintf (file, _(" [abi=O64]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
fprintf (file, _(" [abi=EABI32]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
fprintf (file, _(" [abi=EABI64]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
fprintf (file, _(" [abi unknown]"));
else if (ABI_N32_P (abfd))
fprintf (file, _(" [abi=N32]"));
else if (ABI_64_P (abfd))
fprintf (file, _(" [abi=64]"));
else
fprintf (file, _(" [no abi set]"));
if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
fprintf (file, _(" [mips1]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
fprintf (file, _(" [mips2]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
fprintf (file, _(" [mips3]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
fprintf (file, _(" [mips4]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5)
fprintf (file, _ (" [mips5]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32)
fprintf (file, _ (" [mips32]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64)
fprintf (file, _ (" [mips64]"));
else
fprintf (file, _(" [unknown ISA]"));
if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
fprintf (file, _(" [32bitmode]"));
else
fprintf (file, _(" [not 32bitmode]"));
fputc ('\n', file);
return true;
}
/* Handle a MIPS specific section when reading an object file. This
is called when elfcode.h finds a section with an unknown type.
This routine supports both the 32-bit and 64-bit ELF ABI.
FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
how to. */
boolean
_bfd_mips_elf_section_from_shdr (abfd, hdr, name)
bfd *abfd;
Elf_Internal_Shdr *hdr;
char *name;
{
flagword flags = 0;
/* 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
suggested names for all the MIPS specific sections, so we will
probably get away with this. */
switch (hdr->sh_type)
{
case SHT_MIPS_LIBLIST:
if (strcmp (name, ".liblist") != 0)
return false;
break;
case SHT_MIPS_MSYM:
if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0)
return false;
break;
case SHT_MIPS_CONFLICT:
if (strcmp (name, ".conflict") != 0)
return false;
break;
case SHT_MIPS_GPTAB:
if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0)
return false;
break;
case SHT_MIPS_UCODE:
if (strcmp (name, ".ucode") != 0)
return false;
break;
case SHT_MIPS_DEBUG:
if (strcmp (name, ".mdebug") != 0)
return false;
flags = SEC_DEBUGGING;
break;
case SHT_MIPS_REGINFO:
if (strcmp (name, ".reginfo") != 0
|| hdr->sh_size != sizeof (Elf32_External_RegInfo))
return false;
flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
break;
case SHT_MIPS_IFACE:
if (strcmp (name, ".MIPS.interfaces") != 0)
return false;
break;
case SHT_MIPS_CONTENT:
if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
return false;
break;
case SHT_MIPS_OPTIONS:
if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
return false;
break;
case SHT_MIPS_DWARF:
if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
return false;
break;
case SHT_MIPS_SYMBOL_LIB:
if (strcmp (name, ".MIPS.symlib") != 0)
return false;
break;
case SHT_MIPS_EVENTS:
if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
&& strncmp (name, ".MIPS.post_rel",
sizeof ".MIPS.post_rel" - 1) != 0)
return false;
break;
default:
return false;
}
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
return false;
if (flags)
{
if (! bfd_set_section_flags (abfd, hdr->bfd_section,
(bfd_get_section_flags (abfd,
hdr->bfd_section)
| flags)))
return false;
}
/* FIXME: We should record sh_info for a .gptab section. */
/* For a .reginfo section, set the gp value in the tdata information
from the contents of this section. We need the gp value while
processing relocs, so we just get it now. The .reginfo section
is not used in the 64-bit MIPS ELF ABI. */
if (hdr->sh_type == SHT_MIPS_REGINFO)
{
Elf32_External_RegInfo ext;
Elf32_RegInfo s;
if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
(file_ptr) 0,
(bfd_size_type) sizeof ext))
return false;
bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
elf_gp (abfd) = s.ri_gp_value;
}
/* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
set the gp value based on what we find. We may see both
SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
they should agree. */
if (hdr->sh_type == SHT_MIPS_OPTIONS)
{
bfd_byte *contents, *l, *lend;
contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
if (contents == NULL)
return false;
if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
(file_ptr) 0, hdr->sh_size))
{
free (contents);
return false;
}
l = contents;
lend = contents + hdr->sh_size;
while (l + sizeof (Elf_External_Options) <= lend)
{
Elf_Internal_Options intopt;
bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
&intopt);
if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
{
Elf64_Internal_RegInfo intreg;
bfd_mips_elf64_swap_reginfo_in
(abfd,
((Elf64_External_RegInfo *)
(l + sizeof (Elf_External_Options))),
&intreg);
elf_gp (abfd) = intreg.ri_gp_value;
}
else if (intopt.kind == ODK_REGINFO)
{
Elf32_RegInfo intreg;
bfd_mips_elf32_swap_reginfo_in
(abfd,
((Elf32_External_RegInfo *)
(l + sizeof (Elf_External_Options))),
&intreg);
elf_gp (abfd) = intreg.ri_gp_value;
}
l += intopt.size;
}
free (contents);
}
return true;
}
/* Set the correct type for a MIPS ELF section. We do this by the
section name, which is a hack, but ought to work. This routine is
used by both the 32-bit and the 64-bit ABI. */
boolean
_bfd_mips_elf_fake_sections (abfd, hdr, sec)
bfd *abfd;
Elf32_Internal_Shdr *hdr;
asection *sec;
{
register const char *name;
name = bfd_get_section_name (abfd, sec);
if (strcmp (name, ".liblist") == 0)
{
hdr->sh_type = SHT_MIPS_LIBLIST;
hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
/* The sh_link field is set in final_write_processing. */
}
else if (strcmp (name, ".conflict") == 0)
hdr->sh_type = SHT_MIPS_CONFLICT;
else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
{
hdr->sh_type = SHT_MIPS_GPTAB;
hdr->sh_entsize = sizeof (Elf32_External_gptab);
/* The sh_info field is set in final_write_processing. */
}
else if (strcmp (name, ".ucode") == 0)
hdr->sh_type = SHT_MIPS_UCODE;
else if (strcmp (name, ".mdebug") == 0)
{
hdr->sh_type = SHT_MIPS_DEBUG;
/* In a shared object on Irix 5.3, the .mdebug section has an
entsize of 0. FIXME: Does this matter? */
if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
hdr->sh_entsize = 0;
else
hdr->sh_entsize = 1;
}
else if (strcmp (name, ".reginfo") == 0)
{
hdr->sh_type = SHT_MIPS_REGINFO;
/* In a shared object on Irix 5.3, the .reginfo section has an
entsize of 0x18. FIXME: Does this matter? */
if (SGI_COMPAT (abfd))
{
if ((abfd->flags & DYNAMIC) != 0)
hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
else
hdr->sh_entsize = 1;
}
else
hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
}
else if (SGI_COMPAT (abfd)
&& (strcmp (name, ".hash") == 0
|| strcmp (name, ".dynamic") == 0
|| strcmp (name, ".dynstr") == 0))
{
if (SGI_COMPAT (abfd))
hdr->sh_entsize = 0;
#if 0
/* This isn't how the Irix 6 linker behaves. */
hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
#endif
}
else if (strcmp (name, ".got") == 0
|| strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0
|| strcmp (name, ".sdata") == 0
|| strcmp (name, ".sbss") == 0
|| strcmp (name, ".lit4") == 0
|| strcmp (name, ".lit8") == 0)
hdr->sh_flags |= SHF_MIPS_GPREL;
else if (strcmp (name, ".MIPS.interfaces") == 0)
{
hdr->sh_type = SHT_MIPS_IFACE;
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
}
else if (strncmp (name, ".MIPS.content", strlen (".MIPS.content")) == 0)
{
hdr->sh_type = SHT_MIPS_CONTENT;
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
/* The sh_info field is set in final_write_processing. */
}
else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
{
hdr->sh_type = SHT_MIPS_OPTIONS;
hdr->sh_entsize = 1;
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
}
else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
hdr->sh_type = SHT_MIPS_DWARF;
else if (strcmp (name, ".MIPS.symlib") == 0)
{
hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
/* The sh_link and sh_info fields are set in
final_write_processing. */
}
else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
|| strncmp (name, ".MIPS.post_rel",
sizeof ".MIPS.post_rel" - 1) == 0)
{
hdr->sh_type = SHT_MIPS_EVENTS;
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
/* The sh_link field is set in final_write_processing. */
}
else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0)
{
hdr->sh_type = SHT_MIPS_MSYM;
hdr->sh_flags |= SHF_ALLOC;
hdr->sh_entsize = 8;
}
/* The generic elf_fake_sections will set up REL_HDR using the
default kind of relocations. But, we may actually need both
kinds of relocations, so we set up the second header here. */
if ((sec->flags & SEC_RELOC) != 0)
{
struct bfd_elf_section_data *esd;
bfd_size_type amt = sizeof (Elf_Internal_Shdr);
esd = elf_section_data (sec);
BFD_ASSERT (esd->rel_hdr2 == NULL);
esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
if (!esd->rel_hdr2)
return false;
_bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
!elf_section_data (sec)->use_rela_p);
}
return true;
}
/* Given a BFD section, try to locate the corresponding ELF section
index. This is used by both the 32-bit and the 64-bit ABI.
Actually, it's not clear to me that the 64-bit ABI supports these,
but for non-PIC objects we will certainly want support for at least
the .scommon section. */
boolean
_bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval)
bfd *abfd ATTRIBUTE_UNUSED;
Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED;
asection *sec;
int *retval;
{
if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
{
*retval = SHN_MIPS_SCOMMON;
return true;
}
if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
{
*retval = SHN_MIPS_ACOMMON;
return true;
}
return false;
}
/* When are writing out the .options or .MIPS.options section,
remember the bytes we are writing out, so that we can install the
GP value in the section_processing routine. */
boolean
_bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
bfd *abfd;
sec_ptr section;
PTR location;
file_ptr offset;
bfd_size_type count;
{
if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
{
bfd_byte *c;
if (elf_section_data (section) == NULL)
{
bfd_size_type amt = sizeof (struct bfd_elf_section_data);
section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
if (elf_section_data (section) == NULL)
return false;
}
c = (bfd_byte *) elf_section_data (section)->tdata;
if (c == NULL)
{
bfd_size_type size;
if (section->_cooked_size != 0)
size = section->_cooked_size;
else
size = section->_raw_size;
c = (bfd_byte *) bfd_zalloc (abfd, size);
if (c == NULL)
return false;
elf_section_data (section)->tdata = (PTR) c;
}
memcpy (c + offset, location, (size_t) count);
}
return _bfd_elf_set_section_contents (abfd, section, location, offset,
count);
}
/* Work over a section just before writing it out. This routine is
used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
sections that need the SHF_MIPS_GPREL flag by name; there has to be
a better way. */
boolean
_bfd_mips_elf_section_processing (abfd, hdr)
bfd *abfd;
Elf_Internal_Shdr *hdr;
{
if (hdr->sh_type == SHT_MIPS_REGINFO
&& hdr->sh_size > 0)
{
bfd_byte buf[4];
BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
BFD_ASSERT (hdr->contents == NULL);
if (bfd_seek (abfd,
hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
SEEK_SET) != 0)
return false;
H_PUT_32 (abfd, elf_gp (abfd), buf);
if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
return false;
}
if (hdr->sh_type == SHT_MIPS_OPTIONS
&& hdr->bfd_section != NULL
&& elf_section_data (hdr->bfd_section) != NULL
&& elf_section_data (hdr->bfd_section)->tdata != NULL)
{
bfd_byte *contents, *l, *lend;
/* We stored the section contents in the elf_section_data tdata
field in the set_section_contents routine. We save the
section contents so that we don't have to read them again.
At this point we know that elf_gp is set, so we can look
through the section contents to see if there is an
ODK_REGINFO structure. */
contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
l = contents;
lend = contents + hdr->sh_size;
while (l + sizeof (Elf_External_Options) <= lend)
{
Elf_Internal_Options intopt;
bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
&intopt);
if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
{
bfd_byte buf[8];
if (bfd_seek (abfd,
(hdr->sh_offset
+ (l - contents)
+ sizeof (Elf_External_Options)
+ (sizeof (Elf64_External_RegInfo) - 8)),
SEEK_SET) != 0)
return false;
H_PUT_64 (abfd, elf_gp (abfd), buf);
if (bfd_bwrite (buf, (bfd_size_type) 8, abfd) != 8)
return false;
}
else if (intopt.kind == ODK_REGINFO)
{
bfd_byte buf[4];
if (bfd_seek (abfd,
(hdr->sh_offset
+ (l - contents)
+ sizeof (Elf_External_Options)
+ (sizeof (Elf32_External_RegInfo) - 4)),
SEEK_SET) != 0)
return false;
H_PUT_32 (abfd, elf_gp (abfd), buf);
if (bfd_bwrite (buf, (bfd_size_type) 4, abfd) != 4)
return false;
}
l += intopt.size;
}
}
if (hdr->bfd_section != NULL)
{
const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
if (strcmp (name, ".sdata") == 0
|| strcmp (name, ".lit8") == 0
|| strcmp (name, ".lit4") == 0)
{
hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
hdr->sh_type = SHT_PROGBITS;
}
else if (strcmp (name, ".sbss") == 0)
{
hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
hdr->sh_type = SHT_NOBITS;
}
else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0)
{
hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
hdr->sh_type = SHT_PROGBITS;
}
else if (strcmp (name, ".compact_rel") == 0)
{
hdr->sh_flags = 0;
hdr->sh_type = SHT_PROGBITS;
}
else if (strcmp (name, ".rtproc") == 0)
{
if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
{
unsigned int adjust;
adjust = hdr->sh_size % hdr->sh_addralign;
if (adjust != 0)
hdr->sh_size += hdr->sh_addralign - adjust;
}
}
}
return true;
}
/* MIPS ELF uses two common sections. One is the usual one, and the
other is for small objects. All the small objects are kept
together, and then referenced via the gp pointer, which yields
faster assembler code. This is what we use for the small common
section. This approach is copied from ecoff.c. */
static asection mips_elf_scom_section;
static asymbol mips_elf_scom_symbol;
static asymbol *mips_elf_scom_symbol_ptr;
/* MIPS ELF also uses an acommon section, which represents an
allocated common symbol which may be overridden by a
definition in a shared library. */
static asection mips_elf_acom_section;
static asymbol mips_elf_acom_symbol;
static asymbol *mips_elf_acom_symbol_ptr;
/* Handle the special MIPS section numbers that a symbol may use.
This is used for both the 32-bit and the 64-bit ABI. */
void
_bfd_mips_elf_symbol_processing (abfd, asym)
bfd *abfd;
asymbol *asym;
{
elf_symbol_type *elfsym;
elfsym = (elf_symbol_type *) asym;
switch (elfsym->internal_elf_sym.st_shndx)
{
case SHN_MIPS_ACOMMON:
/* This section is used in a dynamically linked executable file.
It is an allocated common section. The dynamic linker can
either resolve these symbols to something in a shared
library, or it can just leave them here. For our purposes,
we can consider these symbols to be in a new section. */
if (mips_elf_acom_section.name == NULL)
{
/* Initialize the acommon section. */
mips_elf_acom_section.name = ".acommon";
mips_elf_acom_section.flags = SEC_ALLOC;
mips_elf_acom_section.output_section = &mips_elf_acom_section;
mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
mips_elf_acom_symbol.name = ".acommon";
mips_elf_acom_symbol.flags = BSF_SECTION_SYM;
mips_elf_acom_symbol.section = &mips_elf_acom_section;
mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol;
}
asym->section = &mips_elf_acom_section;
break;
case SHN_COMMON:
/* Common symbols less than the GP size are automatically
treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
if (asym->value > elf_gp_size (abfd)
|| IRIX_COMPAT (abfd) == ict_irix6)
break;
/* Fall through. */
case SHN_MIPS_SCOMMON:
if (mips_elf_scom_section.name == NULL)
{
/* Initialize the small common section. */
mips_elf_scom_section.name = ".scommon";
mips_elf_scom_section.flags = SEC_IS_COMMON;
mips_elf_scom_section.output_section = &mips_elf_scom_section;
mips_elf_scom_section.symbol = &mips_elf_scom_symbol;
mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr;
mips_elf_scom_symbol.name = ".scommon";
mips_elf_scom_symbol.flags = BSF_SECTION_SYM;
mips_elf_scom_symbol.section = &mips_elf_scom_section;
mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol;
}
asym->section = &mips_elf_scom_section;
asym->value = elfsym->internal_elf_sym.st_size;
break;
case SHN_MIPS_SUNDEFINED:
asym->section = bfd_und_section_ptr;
break;
#if 0 /* for SGI_COMPAT */
case SHN_MIPS_TEXT:
asym->section = mips_elf_text_section_ptr;
break;
case SHN_MIPS_DATA:
asym->section = mips_elf_data_section_ptr;
break;
#endif
}
}
/* When creating an Irix 5 executable, we need REGINFO and RTPROC
segments. */
int
_bfd_mips_elf_additional_program_headers (abfd)
bfd *abfd;
{
asection *s;
int ret = 0;
/* See if we need a PT_MIPS_REGINFO segment. */
s = bfd_get_section_by_name (abfd, ".reginfo");
if (s && (s->flags & SEC_LOAD))
++ret;
/* See if we need a PT_MIPS_OPTIONS segment. */
if (IRIX_COMPAT (abfd) == ict_irix6
&& bfd_get_section_by_name (abfd,
MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
++ret;
/* See if we need a PT_MIPS_RTPROC segment. */
if (IRIX_COMPAT (abfd) == ict_irix5
&& bfd_get_section_by_name (abfd, ".dynamic")
&& bfd_get_section_by_name (abfd, ".mdebug"))
++ret;
return ret;
}
/* Modify the segment map for an Irix 5 executable. */
boolean
_bfd_mips_elf_modify_segment_map (abfd)
bfd *abfd;
{
asection *s;
struct elf_segment_map *m, **pm;
bfd_size_type amt;
/* If there is a .reginfo section, we need a PT_MIPS_REGINFO
segment. */
s = bfd_get_section_by_name (abfd, ".reginfo");
if (s != NULL && (s->flags & SEC_LOAD) != 0)
{
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
if (m->p_type == PT_MIPS_REGINFO)
break;
if (m == NULL)
{
amt = sizeof *m;
m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
return false;
m->p_type = PT_MIPS_REGINFO;
m->count = 1;
m->sections[0] = s;
/* We want to put it after the PHDR and INTERP segments. */
pm = &elf_tdata (abfd)->segment_map;
while (*pm != NULL
&& ((*pm)->p_type == PT_PHDR
|| (*pm)->p_type == PT_INTERP))
pm = &(*pm)->next;
m->next = *pm;
*pm = m;
}
}
/* For IRIX 6, we don't have .mdebug sections, nor does anything but
.dynamic end up in PT_DYNAMIC. However, we do have to insert a
PT_OPTIONS segement immediately following the program header
table. */
if (IRIX_COMPAT (abfd) == ict_irix6)
{
for (s = abfd->sections; s; s = s->next)
if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
break;
if (s)
{
struct elf_segment_map *options_segment;
/* Usually, there's a program header table. But, sometimes
there's not (like when running the `ld' testsuite). So,
if there's no program header table, we just put the
options segement at the end. */
for (pm = &elf_tdata (abfd)->segment_map;
*pm != NULL;
pm = &(*pm)->next)
if ((*pm)->p_type == PT_PHDR)
break;
amt = sizeof (struct elf_segment_map);
options_segment = bfd_zalloc (abfd, amt);
options_segment->next = *pm;
options_segment->p_type = PT_MIPS_OPTIONS;
options_segment->p_flags = PF_R;
options_segment->p_flags_valid = true;
options_segment->count = 1;
options_segment->sections[0] = s;
*pm = options_segment;
}
}
else
{
if (IRIX_COMPAT (abfd) == ict_irix5)
{
/* If there are .dynamic and .mdebug sections, we make a room
for the RTPROC header. FIXME: Rewrite without section names. */
if (bfd_get_section_by_name (abfd, ".interp") == NULL
&& bfd_get_section_by_name (abfd, ".dynamic") != NULL
&& bfd_get_section_by_name (abfd, ".mdebug") != NULL)
{
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
if (m->p_type == PT_MIPS_RTPROC)
break;
if (m == NULL)
{
amt = sizeof *m;
m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
return false;
m->p_type = PT_MIPS_RTPROC;
s = bfd_get_section_by_name (abfd, ".rtproc");
if (s == NULL)
{
m->count = 0;
m->p_flags = 0;
m->p_flags_valid = 1;
}
else
{
m->count = 1;
m->sections[0] = s;
}
/* We want to put it after the DYNAMIC segment. */
pm = &elf_tdata (abfd)->segment_map;
while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
pm = &(*pm)->next;
if (*pm != NULL)
pm = &(*pm)->next;
m->next = *pm;
*pm = m;
}
}
}
/* On Irix 5, the PT_DYNAMIC segment includes the .dynamic,
.dynstr, .dynsym, and .hash sections, and everything in
between. */
for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL;
pm = &(*pm)->next)
if ((*pm)->p_type == PT_DYNAMIC)
break;
m = *pm;
if (m != NULL && IRIX_COMPAT (abfd) == ict_none)
{
/* For a normal mips executable the permissions for the PT_DYNAMIC
segment are read, write and execute. We do that here since
the code in elf.c sets only the read permission. This matters
sometimes for the dynamic linker. */
if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
{
m->p_flags = PF_R | PF_W | PF_X;
m->p_flags_valid = 1;
}
}
if (m != NULL
&& m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0)
{
static const char *sec_names[] =
{
".dynamic", ".dynstr", ".dynsym", ".hash"
};
bfd_vma low, high;
unsigned int i, c;
struct elf_segment_map *n;
low = 0xffffffff;
high = 0;
for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
{
s = bfd_get_section_by_name (abfd, sec_names[i]);
if (s != NULL && (s->flags & SEC_LOAD) != 0)
{
bfd_size_type sz;
if (low > s->vma)
low = s->vma;
sz = s->_cooked_size;
if (sz == 0)
sz = s->_raw_size;
if (high < s->vma + sz)
high = s->vma + sz;
}
}
c = 0;
for (s = abfd->sections; s != NULL; s = s->next)
if ((s->flags & SEC_LOAD) != 0
&& s->vma >= low
&& ((s->vma
+ (s->_cooked_size !=
0 ? s->_cooked_size : s->_raw_size)) <= high))
++c;
amt = sizeof *n + (bfd_size_type) (c - 1) * sizeof (asection *);
n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (n == NULL)
return false;
*n = *m;
n->count = c;
i = 0;
for (s = abfd->sections; s != NULL; s = s->next)
{
if ((s->flags & SEC_LOAD) != 0
&& s->vma >= low
&& ((s->vma
+ (s->_cooked_size != 0 ?
s->_cooked_size : s->_raw_size)) <= high))
{
n->sections[i] = s;
++i;
}
}
*pm = n;
}
}
return true;
}
/* The structure of the runtime procedure descriptor created by the
loader for use by the static exception system. */
typedef struct runtime_pdr {
bfd_vma adr; /* memory address of start of procedure */
long regmask; /* save register mask */
long regoffset; /* save register offset */
long fregmask; /* save floating point register mask */
long fregoffset; /* save floating point register offset */
long frameoffset; /* frame size */
short framereg; /* frame pointer register */
short pcreg; /* offset or reg of return pc */
long irpss; /* index into the runtime string table */
long reserved;
struct exception_info *exception_info;/* pointer to exception array */
} RPDR, *pRPDR;
#define cbRPDR sizeof (RPDR)
#define rpdNil ((pRPDR) 0)
/* Swap RPDR (runtime procedure table entry) for output. */
static void ecoff_swap_rpdr_out
PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
static void
ecoff_swap_rpdr_out (abfd, in, ex)
bfd *abfd;
const RPDR *in;
struct rpdr_ext *ex;
{
/* ECOFF_PUT_OFF was defined in ecoffswap.h. */
ECOFF_PUT_OFF (abfd, in->adr, ex->p_adr);
H_PUT_32 (abfd, in->regmask, ex->p_regmask);
H_PUT_32 (abfd, in->regoffset, ex->p_regoffset);
H_PUT_32 (abfd, in->fregmask, ex->p_fregmask);
H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset);
H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset);
H_PUT_16 (abfd, in->framereg, ex->p_framereg);
H_PUT_16 (abfd, in->pcreg, ex->p_pcreg);
H_PUT_32 (abfd, in->irpss, ex->p_irpss);
#if 0 /* FIXME */
ECOFF_PUT_OFF (abfd, in->exception_info, ex->p_exception_info);
#endif
}
/* Read ECOFF debugging information from a .mdebug section into a
ecoff_debug_info structure. */
boolean
_bfd_mips_elf_read_ecoff_info (abfd, section, debug)
bfd *abfd;
asection *section;
struct ecoff_debug_info *debug;
{
HDRR *symhdr;
const struct ecoff_debug_swap *swap;
char *ext_hdr = NULL;
swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
memset (debug, 0, sizeof (*debug));
ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
if (ext_hdr == NULL && swap->external_hdr_size != 0)
goto error_return;
if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
swap->external_hdr_size)
== false)
goto error_return;
symhdr = &debug->symbolic_header;
(*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
/* The symbolic header contains absolute file offsets and sizes to
read. */
#define READ(ptr, offset, count, size, type) \
if (symhdr->count == 0) \
debug->ptr = NULL; \
else \
{ \
bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
debug->ptr = (type) bfd_malloc (amt); \
if (debug->ptr == NULL) \
goto error_return; \
if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
|| bfd_bread (debug->ptr, amt, abfd) != amt) \
goto error_return; \
}
READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
union aux_ext *);
READ (ss, cbSsOffset, issMax, sizeof (char), char *);
READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
#undef READ
debug->fdr = NULL;
debug->adjust = NULL;
return true;
error_return:
if (ext_hdr != NULL)
free (ext_hdr);
if (debug->line != NULL)
free (debug->line);
if (debug->external_dnr != NULL)
free (debug->external_dnr);
if (debug->external_pdr != NULL)
free (debug->external_pdr);
if (debug->external_sym != NULL)
free (debug->external_sym);
if (debug->external_opt != NULL)
free (debug->external_opt);
if (debug->external_aux != NULL)
free (debug->external_aux);
if (debug->ss != NULL)
free (debug->ss);
if (debug->ssext != NULL)
free (debug->ssext);
if (debug->external_fdr != NULL)
free (debug->external_fdr);
if (debug->external_rfd != NULL)
free (debug->external_rfd);
if (debug->external_ext != NULL)
free (debug->external_ext);
return false;
}
/* MIPS ELF local labels start with '$', not 'L'. */
static boolean
mips_elf_is_local_label_name (abfd, name)
bfd *abfd;
const char *name;
{
if (name[0] == '$')
return true;
/* On Irix 6, the labels go back to starting with '.', so we accept
the generic ELF local label syntax as well. */
return _bfd_elf_is_local_label_name (abfd, name);
}
/* MIPS ELF uses a special find_nearest_line routine in order the
handle the ECOFF debugging information. */
struct mips_elf_find_line
{
struct ecoff_debug_info d;
struct ecoff_find_line i;
};
boolean
_bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
functionname_ptr, line_ptr)
bfd *abfd;
asection *section;
asymbol **symbols;
bfd_vma offset;
const char **filename_ptr;
const char **functionname_ptr;
unsigned int *line_ptr;
{
asection *msec;
if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr))
return true;
if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr,
(unsigned) (ABI_64_P (abfd) ? 8 : 0),
&elf_tdata (abfd)->dwarf2_find_line_info))
return true;
msec = bfd_get_section_by_name (abfd, ".mdebug");
if (msec != NULL)
{
flagword origflags;
struct mips_elf_find_line *fi;
const struct ecoff_debug_swap * const swap =
get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
/* If we are called during a link, mips_elf_final_link may have
cleared the SEC_HAS_CONTENTS field. We force it back on here
if appropriate (which it normally will be). */
origflags = msec->flags;
if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
msec->flags |= SEC_HAS_CONTENTS;
fi = elf_tdata (abfd)->find_line_info;
if (fi == NULL)
{
bfd_size_type external_fdr_size;
char *fraw_src;
char *fraw_end;
struct fdr *fdr_ptr;
bfd_size_type amt = sizeof (struct mips_elf_find_line);
fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
if (fi == NULL)
{
msec->flags = origflags;
return false;
}
if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
{
msec->flags = origflags;
return false;
}
/* Swap in the FDR information. */
amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
if (fi->d.fdr == NULL)
{
msec->flags = origflags;
return false;
}
external_fdr_size = swap->external_fdr_size;
fdr_ptr = fi->d.fdr;
fraw_src = (char *) fi->d.external_fdr;
fraw_end = (fraw_src
+ fi->d.symbolic_header.ifdMax * external_fdr_size);
for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
(*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
elf_tdata (abfd)->find_line_info = fi;
/* Note that we don't bother to ever free this information.
find_nearest_line is either called all the time, as in
objdump -l, so the information should be saved, or it is
rarely called, as in ld error messages, so the memory
wasted is unimportant. Still, it would probably be a
good idea for free_cached_info to throw it away. */
}
if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
&fi->i, filename_ptr, functionname_ptr,
line_ptr))
{
msec->flags = origflags;
return true;
}
msec->flags = origflags;
}
/* Fall back on the generic ELF find_nearest_line routine. */
return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr);
}
/* The mips16 compiler uses a couple of special sections to handle
floating point arguments.
Section names that look like .mips16.fn.FNNAME contain stubs that
copy floating point arguments from the fp regs to the gp regs and
then jump to FNNAME. If any 32 bit function calls FNNAME, the
call should be redirected to the stub instead. If no 32 bit
function calls FNNAME, the stub should be discarded. We need to
consider any reference to the function, not just a call, because
if the address of the function is taken we will need the stub,
since the address might be passed to a 32 bit function.
Section names that look like .mips16.call.FNNAME contain stubs
that copy floating point arguments from the gp regs to the fp
regs and then jump to FNNAME. If FNNAME is a 32 bit function,
then any 16 bit function that calls FNNAME should be redirected
to the stub instead. If FNNAME is not a 32 bit function, the
stub should be discarded.
.mips16.call.fp.FNNAME sections are similar, but contain stubs
which call FNNAME and then copy the return value from the fp regs
to the gp regs. These stubs store the return value in $18 while
calling FNNAME; any function which might call one of these stubs
must arrange to save $18 around the call. (This case is not
needed for 32 bit functions that call 16 bit functions, because
16 bit functions always return floating point values in both
$f0/$f1 and $2/$3.)
Note that in all cases FNNAME might be defined statically.
Therefore, FNNAME is not used literally. Instead, the relocation
information will indicate which symbol the section is for.
We record any stubs that we find in the symbol table. */
#define FN_STUB ".mips16.fn."
#define CALL_STUB ".mips16.call."
#define CALL_FP_STUB ".mips16.call.fp."
/* MIPS ELF linker hash table. */
struct mips_elf_link_hash_table
{
struct elf_link_hash_table root;
#if 0
/* We no longer use this. */
/* String section indices for the dynamic section symbols. */
bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
#endif
/* The number of .rtproc entries. */
bfd_size_type procedure_count;
/* The size of the .compact_rel section (if SGI_COMPAT). */
bfd_size_type compact_rel_size;
/* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
entry is set to the address of __rld_obj_head as in Irix 5. */
boolean use_rld_obj_head;
/* This is the value of the __rld_map or __rld_obj_head symbol. */
bfd_vma rld_value;
/* This is set if we see any mips16 stub sections. */
boolean mips16_stubs_seen;
};
/* Look up an entry in a MIPS ELF linker hash table. */
#define mips_elf_link_hash_lookup(table, string, create, copy, follow) \
((struct mips_elf_link_hash_entry *) \
elf_link_hash_lookup (&(table)->root, (string), (create), \
(copy), (follow)))
/* Traverse a MIPS ELF linker hash table. */
#define mips_elf_link_hash_traverse(table, func, info) \
(elf_link_hash_traverse \
(&(table)->root, \
(boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
(info)))
/* Get the MIPS ELF linker hash table from a link_info structure. */
#define mips_elf_hash_table(p) \
((struct mips_elf_link_hash_table *) ((p)->hash))
static boolean mips_elf_output_extsym
PARAMS ((struct mips_elf_link_hash_entry *, PTR));
/* Create an entry in a MIPS ELF linker hash table. */
static struct bfd_hash_entry *
mips_elf_link_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
{
struct mips_elf_link_hash_entry *ret =
(struct mips_elf_link_hash_entry *) entry;
/* Allocate the structure if it has not already been allocated by a
subclass. */
if (ret == (struct mips_elf_link_hash_entry *) NULL)
ret = ((struct mips_elf_link_hash_entry *)
bfd_hash_allocate (table,
sizeof (struct mips_elf_link_hash_entry)));
if (ret == (struct mips_elf_link_hash_entry *) NULL)
return (struct bfd_hash_entry *) ret;
/* Call the allocation method of the superclass. */
ret = ((struct mips_elf_link_hash_entry *)
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
table, string));
if (ret != (struct mips_elf_link_hash_entry *) NULL)
{
/* Set local fields. */
memset (&ret->esym, 0, sizeof (EXTR));
/* We use -2 as a marker to indicate that the information has
not been set. -1 means there is no associated ifd. */
ret->esym.ifd = -2;
ret->possibly_dynamic_relocs = 0;
ret->readonly_reloc = false;
ret->min_dyn_reloc_index = 0;
ret->no_fn_stub = false;
ret->fn_stub = NULL;
ret->need_fn_stub = false;
ret->call_stub = NULL;
ret->call_fp_stub = NULL;
}
return (struct bfd_hash_entry *) ret;
}
static void
_bfd_mips_elf_hide_symbol (info, entry)
struct bfd_link_info *info;
struct elf_link_hash_entry *entry;
{
bfd *dynobj;
asection *got;
struct mips_got_info *g;
struct mips_elf_link_hash_entry *h;
h = (struct mips_elf_link_hash_entry *) entry;
dynobj = elf_hash_table (info)->dynobj;
got = bfd_get_section_by_name (dynobj, ".got");
g = (struct mips_got_info *) elf_section_data (got)->tdata;
h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
h->root.plt.offset = (bfd_vma) -1;
if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
h->root.dynindx = -1;
/* FIXME: Do we allocate too much GOT space here? */
g->local_gotno++;
got->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
}
/* Create a MIPS ELF linker hash table. */
struct bfd_link_hash_table *
_bfd_mips_elf_link_hash_table_create (abfd)
bfd *abfd;
{
struct mips_elf_link_hash_table *ret;
bfd_size_type amt = sizeof (struct mips_elf_link_hash_table);
ret = (struct mips_elf_link_hash_table *) bfd_alloc (abfd, amt);
if (ret == (struct mips_elf_link_hash_table *) NULL)
return NULL;
if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
mips_elf_link_hash_newfunc))
{
bfd_release (abfd, ret);
return NULL;
}
#if 0
/* We no longer use this. */
for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
#endif
ret->procedure_count = 0;
ret->compact_rel_size = 0;
ret->use_rld_obj_head = false;
ret->rld_value = 0;
ret->mips16_stubs_seen = false;
return &ret->root.root;
}
/* Hook called by the linker routine which adds symbols from an object
file. We must handle the special MIPS section numbers here. */
boolean
_bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
bfd *abfd;
struct bfd_link_info *info;
const Elf_Internal_Sym *sym;
const char **namep;
flagword *flagsp ATTRIBUTE_UNUSED;
asection **secp;
bfd_vma *valp;
{
if (SGI_COMPAT (abfd)
&& (abfd->flags & DYNAMIC) != 0
&& strcmp (*namep, "_rld_new_interface") == 0)
{
/* Skip Irix 5 rld entry name. */
*namep = NULL;
return true;
}
switch (sym->st_shndx)
{
case SHN_COMMON:
/* Common symbols less than the GP size are automatically
treated as SHN_MIPS_SCOMMON symbols. */
if (sym->st_size > elf_gp_size (abfd)
|| IRIX_COMPAT (abfd) == ict_irix6)
break;
/* Fall through. */
case SHN_MIPS_SCOMMON:
*secp = bfd_make_section_old_way (abfd, ".scommon");
(*secp)->flags |= SEC_IS_COMMON;
*valp = sym->st_size;
break;
case SHN_MIPS_TEXT:
/* This section is used in a shared object. */
if (elf_tdata (abfd)->elf_text_section == NULL)
{
asymbol *elf_text_symbol;
asection *elf_text_section;
bfd_size_type amt = sizeof (asection);
elf_text_section = bfd_zalloc (abfd, amt);
if (elf_text_section == NULL)
return false;
amt = sizeof (asymbol);
elf_text_symbol = bfd_zalloc (abfd, amt);
if (elf_text_symbol == NULL)
return false;
/* Initialize the section. */
elf_tdata (abfd)->elf_text_section = elf_text_section;
elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
elf_text_section->symbol = elf_text_symbol;
elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
elf_text_section->name = ".text";
elf_text_section->flags = SEC_NO_FLAGS;
elf_text_section->output_section = NULL;
elf_text_section->owner = abfd;
elf_text_symbol->name = ".text";
elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
elf_text_symbol->section = elf_text_section;
}
/* This code used to do *secp = bfd_und_section_ptr if
info->shared. I don't know why, and that doesn't make sense,
so I took it out. */
*secp = elf_tdata (abfd)->elf_text_section;
break;
case SHN_MIPS_ACOMMON:
/* Fall through. XXX Can we treat this as allocated data? */
case SHN_MIPS_DATA:
/* This section is used in a shared object. */
if (elf_tdata (abfd)->elf_data_section == NULL)
{
asymbol *elf_data_symbol;
asection *elf_data_section;
bfd_size_type amt = sizeof (asection);
elf_data_section = bfd_zalloc (abfd, amt);
if (elf_data_section == NULL)
return false;
amt = sizeof (asymbol);
elf_data_symbol = bfd_zalloc (abfd, amt);
if (elf_data_symbol == NULL)
return false;
/* Initialize the section. */
elf_tdata (abfd)->elf_data_section = elf_data_section;
elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
elf_data_section->symbol = elf_data_symbol;
elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
elf_data_section->name = ".data";
elf_data_section->flags = SEC_NO_FLAGS;
elf_data_section->output_section = NULL;
elf_data_section->owner = abfd;
elf_data_symbol->name = ".data";
elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
elf_data_symbol->section = elf_data_section;
}
/* This code used to do *secp = bfd_und_section_ptr if
info->shared. I don't know why, and that doesn't make sense,
so I took it out. */
*secp = elf_tdata (abfd)->elf_data_section;
break;
case SHN_MIPS_SUNDEFINED:
*secp = bfd_und_section_ptr;
break;
}
if (SGI_COMPAT (abfd)
&& ! info->shared
&& info->hash->creator == abfd->xvec
&& strcmp (*namep, "__rld_obj_head") == 0)
{
struct elf_link_hash_entry *h;
/* Mark __rld_obj_head as dynamic. */
h = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, *namep, BSF_GLOBAL, *secp,
(bfd_vma) *valp, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return false;
mips_elf_hash_table (info)->use_rld_obj_head = true;
}
/* If this is a mips16 text symbol, add 1 to the value to make it
odd. This will cause something like .word SYM to come up with
the right value when it is loaded into the PC. */
if (sym->st_other == STO_MIPS16)
++*valp;
return true;
}
/* Structure used to pass information to mips_elf_output_extsym. */
struct extsym_info
{
bfd *abfd;
struct bfd_link_info *info;
struct ecoff_debug_info *debug;
const struct ecoff_debug_swap *swap;
boolean failed;
};
/* This routine is used to write out ECOFF debugging external symbol
information. It is called via mips_elf_link_hash_traverse. The
ECOFF external symbol information must match the ELF external
symbol information. Unfortunately, at this point we don't know
whether a symbol is required by reloc information, so the two
tables may wind up being different. We must sort out the external
symbol information before we can set the final size of the .mdebug
section, and we must set the size of the .mdebug section before we
can relocate any sections, and we can't know which symbols are
required by relocation until we relocate the sections.
Fortunately, it is relatively unlikely that any symbol will be
stripped but required by a reloc. In particular, it can not happen
when generating a final executable. */
static boolean
mips_elf_output_extsym (h, data)
struct mips_elf_link_hash_entry *h;
PTR data;
{
struct extsym_info *einfo = (struct extsym_info *) data;
boolean strip;
asection *sec, *output_section;
if (h->root.indx == -2)
strip = false;
else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|| (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
&& (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
&& (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
strip = true;
else if (einfo->info->strip == strip_all
|| (einfo->info->strip == strip_some
&& bfd_hash_lookup (einfo->info->keep_hash,
h->root.root.root.string,
false, false) == NULL))
strip = true;
else
strip = false;
if (strip)
return true;
if (h->esym.ifd == -2)
{
h->esym.jmptbl = 0;
h->esym.cobol_main = 0;
h->esym.weakext = 0;
h->esym.reserved = 0;
h->esym.ifd = ifdNil;
h->esym.asym.value = 0;
h->esym.asym.st = stGlobal;
if (h->root.root.type == bfd_link_hash_undefined
|| h->root.root.type == bfd_link_hash_undefweak)
{
const char *name;
/* Use undefined class. Also, set class and type for some
special symbols. */
name = h->root.root.root.string;
if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
|| strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
{
h->esym.asym.sc = scData;
h->esym.asym.st = stLabel;
h->esym.asym.value = 0;
}
else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
{
h->esym.asym.sc = scAbs;
h->esym.asym.st = stLabel;
h->esym.asym.value =
mips_elf_hash_table (einfo->info)->procedure_count;
}
else if (strcmp (name, "_gp_disp") == 0)
{
h->esym.asym.sc = scAbs;
h->esym.asym.st = stLabel;
h->esym.asym.value = elf_gp (einfo->abfd);
}
else
h->esym.asym.sc = scUndefined;
}
else if (h->root.root.type != bfd_link_hash_defined
&& h->root.root.type != bfd_link_hash_defweak)
h->esym.asym.sc = scAbs;
else
{
const char *name;
sec = h->root.root.u.def.section;
output_section = sec->output_section;
/* When making a shared library and symbol h is the one from
the another shared library, OUTPUT_SECTION may be null. */
if (output_section == NULL)
h->esym.asym.sc = scUndefined;
else
{
name = bfd_section_name (output_section->owner, output_section);
if (strcmp (name, ".text") == 0)
h->esym.asym.sc = scText;
else if (strcmp (name, ".data") == 0)
h->esym.asym.sc = scData;
else if (strcmp (name, ".sdata") == 0)
h->esym.asym.sc = scSData;
else if (strcmp (name, ".rodata") == 0
|| strcmp (name, ".rdata") == 0)
h->esym.asym.sc = scRData;
else if (strcmp (name, ".bss") == 0)
h->esym.asym.sc = scBss;
else if (strcmp (name, ".sbss") == 0)
h->esym.asym.sc = scSBss;
else if (strcmp (name, ".init") == 0)
h->esym.asym.sc = scInit;
else if (strcmp (name, ".fini") == 0)
h->esym.asym.sc = scFini;
else
h->esym.asym.sc = scAbs;
}
}
h->esym.asym.reserved = 0;
h->esym.asym.index = indexNil;
}
if (h->root.root.type == bfd_link_hash_common)
h->esym.asym.value = h->root.root.u.c.size;
else if (h->root.root.type == bfd_link_hash_defined
|| h->root.root.type == bfd_link_hash_defweak)
{
if (h->esym.asym.sc == scCommon)
h->esym.asym.sc = scBss;
else if (h->esym.asym.sc == scSCommon)
h->esym.asym.sc = scSBss;
sec = h->root.root.u.def.section;
output_section = sec->output_section;
if (output_section != NULL)
h->esym.asym.value = (h->root.root.u.def.value
+ sec->output_offset
+ output_section->vma);
else
h->esym.asym.value = 0;
}
else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
{
struct mips_elf_link_hash_entry *hd = h;
boolean no_fn_stub = h->no_fn_stub;
while (hd->root.root.type == bfd_link_hash_indirect)
{
hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link;
no_fn_stub = no_fn_stub || hd->no_fn_stub;
}
if (!no_fn_stub)
{
/* Set type and value for a symbol with a function stub. */
h->esym.asym.st = stProc;
sec = hd->root.root.u.def.section;
if (sec == NULL)
h->esym.asym.value = 0;
else
{
output_section = sec->output_section;
if (output_section != NULL)
h->esym.asym.value = (hd->root.plt.offset
+ sec->output_offset
+ output_section->vma);
else
h->esym.asym.value = 0;
}
#if 0 /* FIXME? */
h->esym.ifd = 0;
#endif
}
}
if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
h->root.root.root.string,
&h->esym))
{
einfo->failed = true;
return false;
}
return true;
}
/* Create a runtime procedure table from the .mdebug section. */
static boolean
mips_elf_create_procedure_table (handle, abfd, info, s, debug)
PTR handle;
bfd *abfd;
struct bfd_link_info *info;
asection *s;
struct ecoff_debug_info *debug;
{
const struct ecoff_debug_swap *swap;
HDRR *hdr = &debug->symbolic_header;
RPDR *rpdr, *rp;
struct rpdr_ext *erp;
PTR rtproc;
struct pdr_ext *epdr;
struct sym_ext *esym;
char *ss, **sv;
char *str;
bfd_size_type size;
bfd_size_type count;
unsigned long sindex;
unsigned long i;
PDR pdr;
SYMR sym;
const char *no_name_func = _("static procedure (no name)");
epdr = NULL;
rpdr = NULL;
esym = NULL;
ss = NULL;
sv = NULL;
swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
sindex = strlen (no_name_func) + 1;
count = hdr->ipdMax;
if (count > 0)
{
size = swap->external_pdr_size;
epdr = (struct pdr_ext *) bfd_malloc (size * count);
if (epdr == NULL)
goto error_return;
if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
goto error_return;
size = sizeof (RPDR);
rp = rpdr = (RPDR *) bfd_malloc (size * count);
if (rpdr == NULL)
goto error_return;
size = sizeof (char *);
sv = (char **) bfd_malloc (size * count);
if (sv == NULL)
goto error_return;
count = hdr->isymMax;
size = swap->external_sym_size;
esym = (struct sym_ext *) bfd_malloc (size * count);
if (esym == NULL)
goto error_return;
if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
goto error_return;
count = hdr->issMax;
ss = (char *) bfd_malloc (count);
if (ss == NULL)
goto error_return;
if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
goto error_return;
count = hdr->ipdMax;
for (i = 0; i < (unsigned long) count; i++, rp++)
{
(*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
(*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
rp->adr = sym.value;
rp->regmask = pdr.regmask;
rp->regoffset = pdr.regoffset;
rp->fregmask = pdr.fregmask;
rp->fregoffset = pdr.fregoffset;
rp->frameoffset = pdr.frameoffset;
rp->framereg = pdr.framereg;
rp->pcreg = pdr.pcreg;
rp->irpss = sindex;
sv[i] = ss + sym.iss;
sindex += strlen (sv[i]) + 1;
}
}
size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
size = BFD_ALIGN (size, 16);
rtproc = (PTR) bfd_alloc (abfd, size);
if (rtproc == NULL)
{
mips_elf_hash_table (info)->procedure_count = 0;
goto error_return;
}
mips_elf_hash_table (info)->procedure_count = count + 2;
erp = (struct rpdr_ext *) rtproc;
memset (erp, 0, sizeof (struct rpdr_ext));
erp++;
str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
strcpy (str, no_name_func);
str += strlen (no_name_func) + 1;
for (i = 0; i < count; i++)
{
ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
strcpy (str, sv[i]);
str += strlen (sv[i]) + 1;
}
ECOFF_PUT_OFF (abfd, -1, (erp + count)->p_adr);
/* Set the size and contents of .rtproc section. */
s->_raw_size = size;
s->contents = (bfd_byte *) rtproc;
/* Skip this section later on (I don't think this currently
matters, but someday it might). */
s->link_order_head = (struct bfd_link_order *) NULL;
if (epdr != NULL)
free (epdr);
if (rpdr != NULL)
free (rpdr);
if (esym != NULL)
free (esym);
if (ss != NULL)
free (ss);
if (sv != NULL)
free (sv);
return true;
error_return:
if (epdr != NULL)
free (epdr);
if (rpdr != NULL)
free (rpdr);
if (esym != NULL)
free (esym);
if (ss != NULL)
free (ss);
if (sv != NULL)
free (sv);
return false;
}
/* A comparison routine used to sort .gptab entries. */
static int
gptab_compare (p1, p2)
const PTR p1;
const PTR p2;
{
const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
}
/* We need to use a special link routine to handle the .reginfo and
the .mdebug sections. We need to merge all instances of these
sections together, not write them all out sequentially. */
boolean
_bfd_mips_elf_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
asection **secpp;
asection *o;
struct bfd_link_order *p;
asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
asection *rtproc_sec;
Elf32_RegInfo reginfo;
struct ecoff_debug_info debug;
const struct ecoff_debug_swap *swap
= get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
HDRR *symhdr = &debug.symbolic_header;
PTR mdebug_handle = NULL;
asection *s;
EXTR esym;
unsigned int i;
bfd_size_type amt;
static const char * const secname[] =
{
".text", ".init", ".fini", ".data",
".rodata", ".sdata", ".sbss", ".bss"
};
static const int sc[] =
{
scText, scInit, scFini, scData,
scRData, scSData, scSBss, scBss
};
/* If all the things we linked together were PIC, but we're
producing an executable (rather than a shared object), then the
resulting file is CPIC (i.e., it calls PIC code.) */
if (!info->shared
&& !info->relocateable
&& elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
{
elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
}
/* We'd carefully arranged the dynamic symbol indices, and then the
generic size_dynamic_sections renumbered them out from under us.
Rather than trying somehow to prevent the renumbering, just do
the sort again. */
if (elf_hash_table (info)->dynamic_sections_created)
{
bfd *dynobj;
asection *got;
struct mips_got_info *g;
/* When we resort, we must tell mips_elf_sort_hash_table what
the lowest index it may use is. That's the number of section
symbols we're going to add. The generic ELF linker only
adds these symbols when building a shared object. Note that
we count the sections after (possibly) removing the .options
section above. */
if (!mips_elf_sort_hash_table (info, (info->shared
? bfd_count_sections (abfd) + 1
: 1)))
return false;
/* Make sure we didn't grow the global .got region. */
dynobj = elf_hash_table (info)->dynobj;
got = bfd_get_section_by_name (dynobj, ".got");
g = (struct mips_got_info *) elf_section_data (got)->tdata;
if (g->global_gotsym != NULL)
BFD_ASSERT ((elf_hash_table (info)->dynsymcount
- g->global_gotsym->dynindx)
<= g->global_gotno);
}
/* On IRIX5, we omit the .options section. On IRIX6, however, we
include it, even though we don't process it quite right. (Some
entries are supposed to be merged.) Empirically, we seem to be
better off including it then not. */
if (IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
{
if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
{
for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
if (p->type == bfd_indirect_link_order)
p->u.indirect.section->flags &= ~SEC_HAS_CONTENTS;
(*secpp)->link_order_head = NULL;
*secpp = (*secpp)->next;
--abfd->section_count;
break;
}
}
/* Get a value for the GP register. */
if (elf_gp (abfd) == 0)
{
struct bfd_link_hash_entry *h;
h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
if (h != (struct bfd_link_hash_entry *) NULL
&& h->type == bfd_link_hash_defined)
elf_gp (abfd) = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
else if (info->relocateable)
{
bfd_vma lo;
/* Find the GP-relative section with the lowest offset. */
lo = (bfd_vma) -1;
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
if (o->vma < lo
&& (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
lo = o->vma;
/* And calculate GP relative to that. */
elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
}
else
{
/* If the relocate_section function needs to do a reloc
involving the GP value, it should make a reloc_dangerous
callback to warn that GP is not defined. */
}
}
/* Go through the sections and collect the .reginfo and .mdebug
information. */
reginfo_sec = NULL;
mdebug_sec = NULL;
gptab_data_sec = NULL;
gptab_bss_sec = NULL;
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
{
if (strcmp (o->name, ".reginfo") == 0)
{
memset (®info, 0, sizeof reginfo);
/* We have found the .reginfo section in the output file.
Look through all the link_orders comprising it and merge
the information together. */
for (p = o->link_order_head;
p != (struct bfd_link_order *) NULL;
p = p->next)
{
asection *input_section;
bfd *input_bfd;
Elf32_External_RegInfo ext;
Elf32_RegInfo sub;
if (p->type != bfd_indirect_link_order)
{
if (p->type == bfd_fill_link_order)
continue;
abort ();
}
input_section = p->u.indirect.section;
input_bfd = input_section->owner;
/* The linker emulation code has probably clobbered the
size to be zero bytes. */
if (input_section->_raw_size == 0)
input_section->_raw_size = sizeof (Elf32_External_RegInfo);
if (! bfd_get_section_contents (input_bfd, input_section,
(PTR) &ext,
(file_ptr) 0,
(bfd_size_type) sizeof ext))
return false;
bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub);
reginfo.ri_gprmask |= sub.ri_gprmask;
reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
/* ri_gp_value is set by the function
mips_elf32_section_processing when the section is
finally written out. */
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
input_section->flags &= ~SEC_HAS_CONTENTS;
}
/* Size has been set in mips_elf_always_size_sections */
BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo));
/* Skip this section later on (I don't think this currently
matters, but someday it might). */
o->link_order_head = (struct bfd_link_order *) NULL;
reginfo_sec = o;
}
if (strcmp (o->name, ".mdebug") == 0)
{
struct extsym_info einfo;
bfd_vma last;
/* We have found the .mdebug section in the output file.
Look through all the link_orders comprising it and merge
the information together. */
symhdr->magic = swap->sym_magic;
/* FIXME: What should the version stamp be? */
symhdr->vstamp = 0;
symhdr->ilineMax = 0;
symhdr->cbLine = 0;
symhdr->idnMax = 0;
symhdr->ipdMax = 0;
symhdr->isymMax = 0;
symhdr->ioptMax = 0;
symhdr->iauxMax = 0;
symhdr->issMax = 0;
symhdr->issExtMax = 0;
symhdr->ifdMax = 0;
symhdr->crfd = 0;
symhdr->iextMax = 0;
/* We accumulate the debugging information itself in the
debug_info structure. */
debug.line = NULL;
debug.external_dnr = NULL;
debug.external_pdr = NULL;
debug.external_sym = NULL;
debug.external_opt = NULL;
debug.external_aux = NULL;
debug.ss = NULL;
debug.ssext = debug.ssext_end = NULL;
debug.external_fdr = NULL;
debug.external_rfd = NULL;
debug.external_ext = debug.external_ext_end = NULL;
mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
if (mdebug_handle == (PTR) NULL)
return false;
esym.jmptbl = 0;
esym.cobol_main = 0;
esym.weakext = 0;
esym.reserved = 0;
esym.ifd = ifdNil;
esym.asym.iss = issNil;
esym.asym.st = stLocal;
esym.asym.reserved = 0;
esym.asym.index = indexNil;
last = 0;
for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++)
{
esym.asym.sc = sc[i];
s = bfd_get_section_by_name (abfd, secname[i]);
if (s != NULL)
{
esym.asym.value = s->vma;
last = s->vma + s->_raw_size;
}
else
esym.asym.value = last;
if (!bfd_ecoff_debug_one_external (abfd, &debug, swap,
secname[i], &esym))
return false;
}
for (p = o->link_order_head;
p != (struct bfd_link_order *) NULL;
p = p->next)
{
asection *input_section;
bfd *input_bfd;
const struct ecoff_debug_swap *input_swap;
struct ecoff_debug_info input_debug;
char *eraw_src;
char *eraw_end;
if (p->type != bfd_indirect_link_order)
{
if (p->type == bfd_fill_link_order)
continue;
abort ();
}
input_section = p->u.indirect.section;
input_bfd = input_section->owner;
if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
|| (get_elf_backend_data (input_bfd)
->elf_backend_ecoff_debug_swap) == NULL)
{
/* I don't know what a non MIPS ELF bfd would be
doing with a .mdebug section, but I don't really
want to deal with it. */
continue;
}
input_swap = (get_elf_backend_data (input_bfd)
->elf_backend_ecoff_debug_swap);
BFD_ASSERT (p->size == input_section->_raw_size);
/* The ECOFF linking code expects that we have already
read in the debugging information and set up an
ecoff_debug_info structure, so we do that now. */
if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
&input_debug))
return false;
if (! (bfd_ecoff_debug_accumulate
(mdebug_handle, abfd, &debug, swap, input_bfd,
&input_debug, input_swap, info)))
return false;
/* Loop through the external symbols. For each one with
interesting information, try to find the symbol in
the linker global hash table and save the information
for the output external symbols. */
eraw_src = input_debug.external_ext;
eraw_end = (eraw_src
+ (input_debug.symbolic_header.iextMax
* input_swap->external_ext_size));
for (;
eraw_src < eraw_end;
eraw_src += input_swap->external_ext_size)
{
EXTR ext;
const char *name;
struct mips_elf_link_hash_entry *h;
(*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
if (ext.asym.sc == scNil
|| ext.asym.sc == scUndefined
|| ext.asym.sc == scSUndefined)
continue;
name = input_debug.ssext + ext.asym.iss;
h = mips_elf_link_hash_lookup (mips_elf_hash_table (info),
name, false, false, true);
if (h == NULL || h->esym.ifd != -2)
continue;
if (ext.ifd != -1)
{
BFD_ASSERT (ext.ifd
< input_debug.symbolic_header.ifdMax);
ext.ifd = input_debug.ifdmap[ext.ifd];
}
h->esym = ext;
}
/* Free up the information we just read. */
free (input_debug.line);
free (input_debug.external_dnr);
free (input_debug.external_pdr);
free (input_debug.external_sym);
free (input_debug.external_opt);
free (input_debug.external_aux);
free (input_debug.ss);
free (input_debug.ssext);
free (input_debug.external_fdr);
free (input_debug.external_rfd);
free (input_debug.external_ext);
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
input_section->flags &= ~SEC_HAS_CONTENTS;
}
if (SGI_COMPAT (abfd) && info->shared)
{
/* Create .rtproc section. */
rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
if (rtproc_sec == NULL)
{
flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED | SEC_READONLY);
rtproc_sec = bfd_make_section (abfd, ".rtproc");
if (rtproc_sec == NULL
|| ! bfd_set_section_flags (abfd, rtproc_sec, flags)
|| ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
return false;
}
if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
info, rtproc_sec, &debug))
return false;
}
/* Build the external symbol information. */
einfo.abfd = abfd;
einfo.info = info;
einfo.debug = &debug;
einfo.swap = swap;
einfo.failed = false;
mips_elf_link_hash_traverse (mips_elf_hash_table (info),
mips_elf_output_extsym,
(PTR) &einfo);
if (einfo.failed)
return false;
/* Set the size of the .mdebug section. */
o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
/* Skip this section later on (I don't think this currently
matters, but someday it might). */
o->link_order_head = (struct bfd_link_order *) NULL;
mdebug_sec = o;
}
if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
{
const char *subname;
unsigned int c;
Elf32_gptab *tab;
Elf32_External_gptab *ext_tab;
unsigned int j;
/* The .gptab.sdata and .gptab.sbss sections hold
information describing how the small data area would
change depending upon the -G switch. These sections
not used in executables files. */
if (! info->relocateable)
{
for (p = o->link_order_head;
p != (struct bfd_link_order *) NULL;
p = p->next)
{
asection *input_section;
if (p->type != bfd_indirect_link_order)
{
if (p->type == bfd_fill_link_order)
continue;
abort ();
}
input_section = p->u.indirect.section;
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
input_section->flags &= ~SEC_HAS_CONTENTS;
}
/* Skip this section later on (I don't think this
currently matters, but someday it might). */
o->link_order_head = (struct bfd_link_order *) NULL;
/* Really remove the section. */
for (secpp = &abfd->sections;
*secpp != o;
secpp = &(*secpp)->next)
;
*secpp = (*secpp)->next;
--abfd->section_count;
continue;
}
/* There is one gptab for initialized data, and one for
uninitialized data. */
if (strcmp (o->name, ".gptab.sdata") == 0)
gptab_data_sec = o;
else if (strcmp (o->name, ".gptab.sbss") == 0)
gptab_bss_sec = o;
else
{
(*_bfd_error_handler)
(_("%s: illegal section name `%s'"),
bfd_get_filename (abfd), o->name);
bfd_set_error (bfd_error_nonrepresentable_section);
return false;
}
/* The linker script always combines .gptab.data and
.gptab.sdata into .gptab.sdata, and likewise for
.gptab.bss and .gptab.sbss. It is possible that there is
no .sdata or .sbss section in the output file, in which
case we must change the name of the output section. */
subname = o->name + sizeof ".gptab" - 1;
if (bfd_get_section_by_name (abfd, subname) == NULL)
{
if (o == gptab_data_sec)
o->name = ".gptab.data";
else
o->name = ".gptab.bss";
subname = o->name + sizeof ".gptab" - 1;
BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
}
/* Set up the first entry. */
c = 1;
amt = c * sizeof (Elf32_gptab);
tab = (Elf32_gptab *) bfd_malloc (amt);
if (tab == NULL)
return false;
tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
tab[0].gt_header.gt_unused = 0;
/* Combine the input sections. */
for (p = o->link_order_head;
p != (struct bfd_link_order *) NULL;
p = p->next)
{
asection *input_section;
bfd *input_bfd;
bfd_size_type size;
unsigned long last;
bfd_size_type gpentry;
if (p->type != bfd_indirect_link_order)
{
if (p->type == bfd_fill_link_order)
continue;
abort ();
}
input_section = p->u.indirect.section;
input_bfd = input_section->owner;
/* Combine the gptab entries for this input section one
by one. We know that the input gptab entries are
sorted by ascending -G value. */
size = bfd_section_size (input_bfd, input_section);
last = 0;
for (gpentry = sizeof (Elf32_External_gptab);
gpentry < size;
gpentry += sizeof (Elf32_External_gptab))
{
Elf32_External_gptab ext_gptab;
Elf32_gptab int_gptab;
unsigned long val;
unsigned long add;
boolean exact;
unsigned int look;
if (! (bfd_get_section_contents
(input_bfd, input_section, (PTR) &ext_gptab,
(file_ptr) gpentry,
(bfd_size_type) sizeof (Elf32_External_gptab))))
{
free (tab);
return false;
}
bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab,
&int_gptab);
val = int_gptab.gt_entry.gt_g_value;
add = int_gptab.gt_entry.gt_bytes - last;
exact = false;
for (look = 1; look < c; look++)
{
if (tab[look].gt_entry.gt_g_value >= val)
tab[look].gt_entry.gt_bytes += add;
if (tab[look].gt_entry.gt_g_value == val)
exact = true;
}
if (! exact)
{
Elf32_gptab *new_tab;
unsigned int max;
/* We need a new table entry. */
amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab);
new_tab = (Elf32_gptab *) bfd_realloc ((PTR) tab, amt);
if (new_tab == NULL)
{
free (tab);
return false;
}
tab = new_tab;
tab[c].gt_entry.gt_g_value = val;
tab[c].gt_entry.gt_bytes = add;
/* Merge in the size for the next smallest -G
value, since that will be implied by this new
value. */
max = 0;
for (look = 1; look < c; look++)
{
if (tab[look].gt_entry.gt_g_value < val
&& (max == 0
|| (tab[look].gt_entry.gt_g_value
> tab[max].gt_entry.gt_g_value)))
max = look;
}
if (max != 0)
tab[c].gt_entry.gt_bytes +=
tab[max].gt_entry.gt_bytes;
++c;
}
last = int_gptab.gt_entry.gt_bytes;
}
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
input_section->flags &= ~SEC_HAS_CONTENTS;
}
/* The table must be sorted by -G value. */
if (c > 2)
qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
/* Swap out the table. */
amt = (bfd_size_type) c * sizeof (Elf32_External_gptab);
ext_tab = (Elf32_External_gptab *) bfd_alloc (abfd, amt);
if (ext_tab == NULL)
{
free (tab);
return false;
}
for (j = 0; j < c; j++)
bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j);
free (tab);
o->_raw_size = c * sizeof (Elf32_External_gptab);
o->contents = (bfd_byte *) ext_tab;
/* Skip this section later on (I don't think this currently
matters, but someday it might). */
o->link_order_head = (struct bfd_link_order *) NULL;
}
}
/* Invoke the regular ELF backend linker to do all the work. */
if (ABI_64_P (abfd))
{
#ifdef BFD64
if (!bfd_elf64_bfd_final_link (abfd, info))
return false;
#else
abort ();
return false;
#endif /* BFD64 */
}
else if (!bfd_elf32_bfd_final_link (abfd, info))
return false;
/* Now write out the computed sections. */
if (reginfo_sec != (asection *) NULL)
{
Elf32_External_RegInfo ext;
bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext);
if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
(file_ptr) 0, (bfd_size_type) sizeof ext))
return false;
}
if (mdebug_sec != (asection *) NULL)
{
BFD_ASSERT (abfd->output_has_begun);
if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
swap, info,
mdebug_sec->filepos))
return false;
bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
}
if (gptab_data_sec != (asection *) NULL)
{
if (! bfd_set_section_contents (abfd, gptab_data_sec,
gptab_data_sec->contents,
(file_ptr) 0,
gptab_data_sec->_raw_size))
return false;
}
if (gptab_bss_sec != (asection *) NULL)
{
if (! bfd_set_section_contents (abfd, gptab_bss_sec,
gptab_bss_sec->contents,
(file_ptr) 0,
gptab_bss_sec->_raw_size))
return false;
}
if (SGI_COMPAT (abfd))
{
rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
if (rtproc_sec != NULL)
{
if (! bfd_set_section_contents (abfd, rtproc_sec,
rtproc_sec->contents,
(file_ptr) 0,
rtproc_sec->_raw_size))
return false;
}
}
return true;
}
/* This function is called via qsort() to sort the dynamic relocation
entries by increasing r_symndx value. */
static int
sort_dynamic_relocs (arg1, arg2)
const PTR arg1;
const PTR arg2;
{
const Elf32_External_Rel *ext_reloc1 = (const Elf32_External_Rel *) arg1;
const Elf32_External_Rel *ext_reloc2 = (const Elf32_External_Rel *) arg2;
Elf_Internal_Rel int_reloc1;
Elf_Internal_Rel int_reloc2;
bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc1, &int_reloc1);
bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc2, &int_reloc2);
return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info));
}
/* Returns the GOT section for ABFD. */
static asection *
mips_elf_got_section (abfd)
bfd *abfd;
{
return bfd_get_section_by_name (abfd, ".got");
}
/* Returns the GOT information associated with the link indicated by
INFO. If SGOTP is non-NULL, it is filled in with the GOT
section. */
static struct mips_got_info *
mips_elf_got_info (abfd, sgotp)
bfd *abfd;
asection **sgotp;
{
asection *sgot;
struct mips_got_info *g;
sgot = mips_elf_got_section (abfd);
BFD_ASSERT (sgot != NULL);
BFD_ASSERT (elf_section_data (sgot) != NULL);
g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
BFD_ASSERT (g != NULL);
if (sgotp)
*sgotp = sgot;
return g;
}
/* Return whether a relocation is against a local symbol. */
static boolean
mips_elf_local_relocation_p (input_bfd, relocation, local_sections,
check_forced)
bfd *input_bfd;
const Elf_Internal_Rela *relocation;
asection **local_sections;
boolean check_forced;
{
unsigned long r_symndx;
Elf_Internal_Shdr *symtab_hdr;
struct mips_elf_link_hash_entry *h;
size_t extsymoff;
r_symndx = ELF32_R_SYM (relocation->r_info);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
if (r_symndx < extsymoff)
return true;
if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
return true;
if (check_forced)
{
/* Look up the hash table to check whether the symbol
was forced local. */
h = (struct mips_elf_link_hash_entry *)
elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
/* Find the real hash-table entry for this symbol. */
while (h->root.root.type == bfd_link_hash_indirect
|| h->root.root.type == bfd_link_hash_warning)
h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
return true;
}
return false;
}
/* Sign-extend VALUE, which has the indicated number of BITS. */
static bfd_vma
mips_elf_sign_extend (value, bits)
bfd_vma value;
int bits;
{
if (value & ((bfd_vma) 1 << (bits - 1)))
/* VALUE is negative. */
value |= ((bfd_vma) - 1) << bits;
return value;
}
/* Return non-zero if the indicated VALUE has overflowed the maximum
range expressable by a signed number with the indicated number of
BITS. */
static boolean
mips_elf_overflow_p (value, bits)
bfd_vma value;
int bits;
{
bfd_signed_vma svalue = (bfd_signed_vma) value;
if (svalue > (1 << (bits - 1)) - 1)
/* The value is too big. */
return true;
else if (svalue < -(1 << (bits - 1)))
/* The value is too small. */
return true;
/* All is well. */
return false;
}
/* Calculate the %high function. */
static bfd_vma
mips_elf_high (value)
bfd_vma value;
{
return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
}
/* Calculate the %higher function. */
static bfd_vma
mips_elf_higher (value)
bfd_vma value ATTRIBUTE_UNUSED;
{
#ifdef BFD64
return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
#else
abort ();
return (bfd_vma) -1;
#endif
}
/* Calculate the %highest function. */
static bfd_vma
mips_elf_highest (value)
bfd_vma value ATTRIBUTE_UNUSED;
{
#ifdef BFD64
return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff;
#else
abort ();
return (bfd_vma) -1;
#endif
}
/* Returns the GOT index for the global symbol indicated by H. */
static bfd_vma
mips_elf_global_got_index (abfd, h)
bfd *abfd;
struct elf_link_hash_entry *h;
{
bfd_vma index;
asection *sgot;
struct mips_got_info *g;
g = mips_elf_got_info (abfd, &sgot);
/* Once we determine the global GOT entry with the lowest dynamic
symbol table index, we must put all dynamic symbols with greater
indices into the GOT. That makes it easy to calculate the GOT
offset. */
BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
* MIPS_ELF_GOT_SIZE (abfd));
BFD_ASSERT (index < sgot->_raw_size);
return index;
}
/* Returns the offset for the entry at the INDEXth position
in the GOT. */
static bfd_vma
mips_elf_got_offset_from_index (dynobj, output_bfd, index)
bfd *dynobj;
bfd *output_bfd;
bfd_vma index;
{
asection *sgot;
bfd_vma gp;
sgot = mips_elf_got_section (dynobj);
gp = _bfd_get_gp_value (output_bfd);
return (sgot->output_section->vma + sgot->output_offset + index -
gp);
}
/* If H is a symbol that needs a global GOT entry, but has a dynamic
symbol table index lower than any we've seen to date, record it for
posterity. */
static boolean
mips_elf_record_global_got_symbol (h, info, g)
struct elf_link_hash_entry *h;
struct bfd_link_info *info;
struct mips_got_info *g ATTRIBUTE_UNUSED;
{
/* A global symbol in the GOT must also be in the dynamic symbol
table. */
if (h->dynindx == -1
&& !bfd_elf32_link_record_dynamic_symbol (info, h))
return false;
/* If we've already marked this entry as needing GOT space, we don't
need to do it again. */
if (h->got.offset != (bfd_vma) -1)
return true;
/* By setting this to a value other than -1, we are indicating that
there needs to be a GOT entry for H. Avoid using zero, as the
generic ELF copy_indirect_symbol tests for <= 0. */
h->got.offset = 1;
return true;
}
/* This structure is passed to mips_elf_sort_hash_table_f when sorting
the dynamic symbols. */
struct mips_elf_hash_sort_data
{
/* The symbol in the global GOT with the lowest dynamic symbol table
index. */
struct elf_link_hash_entry *low;
/* The least dynamic symbol table index corresponding to a symbol
with a GOT entry. */
long min_got_dynindx;
/* The greatest dynamic symbol table index not corresponding to a
symbol without a GOT entry. */
long max_non_got_dynindx;
};
/* If H needs a GOT entry, assign it the highest available dynamic
index. Otherwise, assign it the lowest available dynamic
index. */
static boolean
mips_elf_sort_hash_table_f (h, data)
struct mips_elf_link_hash_entry *h;
PTR data;
{
struct mips_elf_hash_sort_data *hsd
= (struct mips_elf_hash_sort_data *) data;
/* Symbols without dynamic symbol table entries aren't interesting
at all. */
if (h->root.dynindx == -1)
return true;
if (h->root.got.offset != 1)
h->root.dynindx = hsd->max_non_got_dynindx++;
else
{
h->root.dynindx = --hsd->min_got_dynindx;
hsd->low = (struct elf_link_hash_entry *) h;
}
return true;
}
/* Sort the dynamic symbol table so that symbols that need GOT entries
appear towards the end. This reduces the amount of GOT space
required. MAX_LOCAL is used to set the number of local symbols
known to be in the dynamic symbol table. During
mips_elf_size_dynamic_sections, this value is 1. Afterward, the
section symbols are added and the count is higher. */
static boolean
mips_elf_sort_hash_table (info, max_local)
struct bfd_link_info *info;
unsigned long max_local;
{
struct mips_elf_hash_sort_data hsd;
struct mips_got_info *g;
bfd *dynobj;
dynobj = elf_hash_table (info)->dynobj;
hsd.low = NULL;
hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
hsd.max_non_got_dynindx = max_local;
mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
elf_hash_table (info)),
mips_elf_sort_hash_table_f,
&hsd);
/* There should have been enough room in the symbol table to
accomodate both the GOT and non-GOT symbols. */
BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
/* Now we know which dynamic symbol has the lowest dynamic symbol
table index in the GOT. */
g = mips_elf_got_info (dynobj, NULL);
g->global_gotsym = hsd.low;
return true;
}
/* Create a local GOT entry for VALUE. Return the index of the entry,
or -1 if it could not be created. */
static bfd_vma
mips_elf_create_local_got_entry (abfd, g, sgot, value)
bfd *abfd;
struct mips_got_info *g;
asection *sgot;
bfd_vma value;
{
if (g->assigned_gotno >= g->local_gotno)
{
/* We didn't allocate enough space in the GOT. */
(*_bfd_error_handler)
(_("not enough GOT space for local GOT entries"));
bfd_set_error (bfd_error_bad_value);
return (bfd_vma) -1;
}
MIPS_ELF_PUT_WORD (abfd, value,
(sgot->contents
+ MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno));
return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
}
/* Returns the GOT offset at which the indicated address can be found.
If there is not yet a GOT entry for this value, create one. Returns
-1 if no satisfactory GOT offset can be found. */
static bfd_vma
mips_elf_local_got_index (abfd, info, value)
bfd *abfd;
struct bfd_link_info *info;
bfd_vma value;
{
asection *sgot;
struct mips_got_info *g;
bfd_byte *entry;
g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
/* Look to see if we already have an appropriate entry. */
for (entry = (sgot->contents
+ MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
entry += MIPS_ELF_GOT_SIZE (abfd))
{
bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry);
if (address == value)
return entry - sgot->contents;
}
return mips_elf_create_local_got_entry (abfd, g, sgot, value);
}
/* Find a GOT entry that is within 32KB of the VALUE. These entries
are supposed to be placed at small offsets in the GOT, i.e.,
within 32KB of GP. Return the index into the GOT for this page,
and store the offset from this entry to the desired address in
OFFSETP, if it is non-NULL. */
static bfd_vma
mips_elf_got_page (abfd, info, value, offsetp)
bfd *abfd;
struct bfd_link_info *info;
bfd_vma value;
bfd_vma *offsetp;
{
asection *sgot;
struct mips_got_info *g;
bfd_byte *entry;
bfd_byte *last_entry;
bfd_vma index = 0;
bfd_vma address;
g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
/* Look to see if we aleady have an appropriate entry. */
last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
for (entry = (sgot->contents
+ MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
entry != last_entry;
entry += MIPS_ELF_GOT_SIZE (abfd))
{
address = MIPS_ELF_GET_WORD (abfd, entry);
if (!mips_elf_overflow_p (value - address, 16))
{
/* This entry will serve as the page pointer. We can add a
16-bit number to it to get the actual address. */
index = entry - sgot->contents;
break;
}
}
/* If we didn't have an appropriate entry, we create one now. */
if (entry == last_entry)
index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
if (offsetp)
{
address = MIPS_ELF_GET_WORD (abfd, entry);
*offsetp = value - address;
}
return index;
}
/* Find a GOT entry whose higher-order 16 bits are the same as those
for value. Return the index into the GOT for this entry. */
static bfd_vma
mips_elf_got16_entry (abfd, info, value, external)
bfd *abfd;
struct bfd_link_info *info;
bfd_vma value;
boolean external;
{
asection *sgot;
struct mips_got_info *g;
bfd_byte *entry;
bfd_byte *last_entry;
bfd_vma index = 0;
bfd_vma address;
if (! external)
{
/* Although the ABI says that it is "the high-order 16 bits" that we
want, it is really the %high value. The complete value is
calculated with a `addiu' of a LO16 relocation, just as with a
HI16/LO16 pair. */
value = mips_elf_high (value) << 16;
}
g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
/* Look to see if we already have an appropriate entry. */
last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
for (entry = (sgot->contents
+ MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
entry != last_entry;
entry += MIPS_ELF_GOT_SIZE (abfd))
{
address = MIPS_ELF_GET_WORD (abfd, entry);
if (address == value)
{
/* This entry has the right high-order 16 bits, and the low-order
16 bits are set to zero. */
index = entry - sgot->contents;
break;
}
}
/* If we didn't have an appropriate entry, we create one now. */
if (entry == last_entry)
index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
return index;
}
/* Returns the first relocation of type r_type found, beginning with
RELOCATION. RELEND is one-past-the-end of the relocation table. */
static const Elf_Internal_Rela *
mips_elf_next_relocation (r_type, relocation, relend)
unsigned int r_type;
const Elf_Internal_Rela *relocation;
const Elf_Internal_Rela *relend;
{
/* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
immediately following. However, for the IRIX6 ABI, the next
relocation may be a composed relocation consisting of several
relocations for the same address. In that case, the R_MIPS_LO16
relocation may occur as one of these. We permit a similar
extension in general, as that is useful for GCC. */
while (relocation < relend)
{
if (ELF32_R_TYPE (relocation->r_info) == r_type)
return relocation;
++relocation;
}
/* We didn't find it. */
bfd_set_error (bfd_error_bad_value);
return NULL;
}
/* Create a rel.dyn relocation for the dynamic linker to resolve. REL
is the original relocation, which is now being transformed into a
dynamic relocation. The ADDENDP is adjusted if necessary; the
caller should store the result in place of the original addend. */
static boolean
mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
symbol, addendp, input_section)
bfd *output_bfd;
struct bfd_link_info *info;
const Elf_Internal_Rela *rel;
struct mips_elf_link_hash_entry *h;
asection *sec;
bfd_vma symbol;
bfd_vma *addendp;
asection *input_section;
{
Elf_Internal_Rel outrel;
boolean skip;
asection *sreloc;
bfd *dynobj;
int r_type;
r_type = ELF32_R_TYPE (rel->r_info);
dynobj = elf_hash_table (info)->dynobj;
sreloc
= bfd_get_section_by_name (dynobj,
MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd));
BFD_ASSERT (sreloc != NULL);
BFD_ASSERT (sreloc->contents != NULL);
BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd)
< sreloc->_raw_size);
skip = false;
/* We begin by assuming that the offset for the dynamic relocation
is the same as for the original relocation. We'll adjust this
later to reflect the correct output offsets. */
if (elf_section_data (input_section)->stab_info == NULL)
outrel.r_offset = rel->r_offset;
else
{
/* Except that in a stab section things are more complex.
Because we compress stab information, the offset given in the
relocation may not be the one we want; we must let the stabs
machinery tell us the offset. */
outrel.r_offset
= (_bfd_stab_section_offset
(output_bfd, &elf_hash_table (info)->stab_info,
input_section,
&elf_section_data (input_section)->stab_info,
rel->r_offset));
/* If we didn't need the relocation at all, this value will be
-1. */
if (outrel.r_offset == (bfd_vma) -1)
skip = true;
}
/* If we've decided to skip this relocation, just output an empty
record. Note that R_MIPS_NONE == 0, so that this call to memset
is a way of setting R_TYPE to R_MIPS_NONE. */
if (skip)
memset (&outrel, 0, sizeof (outrel));
else
{
long indx;
bfd_vma section_offset;
/* We must now calculate the dynamic symbol table index to use
in the relocation. */
if (h != NULL
&& (! info->symbolic || (h->root.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))
{
indx = h->root.dynindx;
/* h->root.dynindx may be -1 if this symbol was marked to
become local. */
if (indx == -1)
indx = 0;
}
else
{
if (sec != NULL && bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
return false;
}
else
{
indx = elf_section_data (sec->output_section)->dynindx;
if (indx == 0)
abort ();
}
/* Figure out how far the target of the relocation is from
the beginning of its section. */
section_offset = symbol - sec->output_section->vma;
/* The relocation we're building is section-relative.
Therefore, the original addend must be adjusted by the
section offset. */
*addendp += section_offset;
/* Now, the relocation is just against the section. */
symbol = sec->output_section->vma;
}
/* If the relocation was previously an absolute relocation and
this symbol will not be referred to by the relocation, we must
adjust it by the value we give it in the dynamic symbol table.
Otherwise leave the job up to the dynamic linker. */
if (!indx && r_type != R_MIPS_REL32)
*addendp += symbol;
/* The relocation is always an REL32 relocation because we don't
know where the shared library will wind up at load-time. */
outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
/* Adjust the output offset of the relocation to reference the
correct location in the output file. */
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
}
/* Put the relocation back out. We have to use the special
relocation outputter in the 64-bit case since the 64-bit
relocation format is non-standard. */
if (ABI_64_P (output_bfd))
{
(*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
(output_bfd, &outrel,
(sreloc->contents
+ sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
}
else
bfd_elf32_swap_reloc_out (output_bfd, &outrel,
(((Elf32_External_Rel *)
sreloc->contents)
+ sreloc->reloc_count));
/* Record the index of the first relocation referencing H. This
information is later emitted in the .msym section. */
if (h != NULL
&& (h->min_dyn_reloc_index == 0
|| sreloc->reloc_count < h->min_dyn_reloc_index))
h->min_dyn_reloc_index = sreloc->reloc_count;
/* We've now added another relocation. */
++sreloc->reloc_count;
/* Make sure the output section is writable. The dynamic linker
will be writing to it. */
elf_section_data (input_section->output_section)->this_hdr.sh_flags
|= SHF_WRITE;
/* On IRIX5, make an entry of compact relocation info. */
if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
{
asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
bfd_byte *cr;
if (scpt)
{
Elf32_crinfo cptrel;
mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
cptrel.vaddr = (rel->r_offset
+ input_section->output_section->vma
+ input_section->output_offset);
if (r_type == R_MIPS_REL32)
mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
else
mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
mips_elf_set_cr_dist2to (cptrel, 0);
cptrel.konst = *addendp;
cr = (scpt->contents
+ sizeof (Elf32_External_compact_rel));
bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
((Elf32_External_crinfo *) cr
+ scpt->reloc_count));
++scpt->reloc_count;
}
}
return true;
}
/* Calculate the value produced by the RELOCATION (which comes from
the INPUT_BFD). The ADDEND is the addend to use for this
RELOCATION; RELOCATION->R_ADDEND is ignored.
The result of the relocation calculation is stored in VALUEP.
REQUIRE_JALXP indicates whether or not the opcode used with this
relocation must be JALX.
This function returns bfd_reloc_continue if the caller need take no
further action regarding this relocation, bfd_reloc_notsupported if
something goes dramatically wrong, bfd_reloc_overflow if an
overflow occurs, and bfd_reloc_ok to indicate success. */
static bfd_reloc_status_type
mips_elf_calculate_relocation (abfd,
input_bfd,
input_section,
info,
relocation,
addend,
howto,
local_syms,
local_sections,
valuep,
namep,
require_jalxp)
bfd *abfd;
bfd *input_bfd;
asection *input_section;
struct bfd_link_info *info;
const Elf_Internal_Rela *relocation;
bfd_vma addend;
reloc_howto_type *howto;
Elf_Internal_Sym *local_syms;
asection **local_sections;
bfd_vma *valuep;
const char **namep;
boolean *require_jalxp;
{
/* The eventual value we will return. */
bfd_vma value;
/* The address of the symbol against which the relocation is
occurring. */
bfd_vma symbol = 0;
/* The final GP value to be used for the relocatable, executable, or
shared object file being produced. */
bfd_vma gp = (bfd_vma) - 1;
/* The place (section offset or address) of the storage unit being
relocated. */
bfd_vma p;
/* The value of GP used to create the relocatable object. */
bfd_vma gp0 = (bfd_vma) - 1;
/* The offset into the global offset table at which the address of
the relocation entry symbol, adjusted by the addend, resides
during execution. */
bfd_vma g = (bfd_vma) - 1;
/* The section in which the symbol referenced by the relocation is
located. */
asection *sec = NULL;
struct mips_elf_link_hash_entry *h = NULL;
/* True if the symbol referred to by this relocation is a local
symbol. */
boolean local_p;
/* True if the symbol referred to by this relocation is "_gp_disp". */
boolean gp_disp_p = false;
Elf_Internal_Shdr *symtab_hdr;
size_t extsymoff;
unsigned long r_symndx;
int r_type;
/* True if overflow occurred during the calculation of the
relocation value. */
boolean overflowed_p;
/* True if this relocation refers to a MIPS16 function. */
boolean target_is_16_bit_code_p = false;
/* Parse the relocation. */
r_symndx = ELF32_R_SYM (relocation->r_info);
r_type = ELF32_R_TYPE (relocation->r_info);
p = (input_section->output_section->vma
+ input_section->output_offset
+ relocation->r_offset);
/* Assume that there will be no overflow. */
overflowed_p = false;
/* Figure out whether or not the symbol is local, and get the offset
used in the array of hash table entries. */
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
local_p = mips_elf_local_relocation_p (input_bfd, relocation,
local_sections, false);
if (! elf_bad_symtab (input_bfd))
extsymoff = symtab_hdr->sh_info;
else
{
/* The symbol table does not follow the rule that local symbols
must come before globals. */
extsymoff = 0;
}
/* Figure out the value of the symbol. */
if (local_p)
{
Elf_Internal_Sym *sym;
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
symbol = sec->output_section->vma + sec->output_offset;
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
symbol += sym->st_value;
/* MIPS16 text labels should be treated as odd. */
if (sym->st_other == STO_MIPS16)
++symbol;
/* Record the name of this symbol, for our caller. */
*namep = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym->st_name);
if (*namep == '\0')
*namep = bfd_section_name (input_bfd, sec);
target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
}
else
{
/* For global symbols we look up the symbol in the hash-table. */
h = ((struct mips_elf_link_hash_entry *)
elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
/* Find the real hash-table entry for this symbol. */
while (h->root.root.type == bfd_link_hash_indirect
|| h->root.root.type == bfd_link_hash_warning)
h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
/* Record the name of this symbol, for our caller. */
*namep = h->root.root.root.string;
/* See if this is the special _gp_disp symbol. Note that such a
symbol must always be a global symbol. */
if (strcmp (h->root.root.root.string, "_gp_disp") == 0)
{
/* Relocations against _gp_disp are permitted only with
R_MIPS_HI16 and R_MIPS_LO16 relocations. */
if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
return bfd_reloc_notsupported;
gp_disp_p = true;
}
/* If this symbol is defined, calculate its address. Note that
_gp_disp is a magic symbol, always implicitly defined by the
linker, so it's inappropriate to check to see whether or not
its defined. */
else if ((h->root.root.type == bfd_link_hash_defined
|| h->root.root.type == bfd_link_hash_defweak)
&& h->root.root.u.def.section)
{
sec = h->root.root.u.def.section;
if (sec->output_section)
symbol = (h->root.root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
else
symbol = h->root.root.u.def.value;
}
else if (h->root.root.type == bfd_link_hash_undefweak)
/* We allow relocations against undefined weak symbols, giving
it the value zero, so that you can undefined weak functions
and check to see if they exist by looking at their
addresses. */
symbol = 0;
else if (info->shared
&& (!info->symbolic || info->allow_shlib_undefined)
&& !info->no_undefined
&& ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
symbol = 0;
else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
{
/* If this is a dynamic link, we should have created a
_DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
in in mips_elf_create_dynamic_sections.
Otherwise, we should define the symbol with a value of 0.
FIXME: It should probably get into the symbol table
somehow as well. */
BFD_ASSERT (! info->shared);
BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
symbol = 0;
}
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.root.string, input_bfd,
input_section, relocation->r_offset,
(!info->shared || info->no_undefined
|| ELF_ST_VISIBILITY (h->root.other)))))
return bfd_reloc_undefined;
symbol = 0;
}
target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
}
/* If this is a 32-bit call to a 16-bit function with a stub, we
need to redirect the call to the stub, unless we're already *in*
a stub. */
if (r_type != R_MIPS16_26 && !info->relocateable
&& ((h != NULL && h->fn_stub != NULL)
|| (local_p && elf_tdata (input_bfd)->local_stubs != NULL
&& elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
&& !mips_elf_stub_section_p (input_bfd, input_section))
{
/* This is a 32-bit call to a 16-bit function. We should
have already noticed that we were going to need the
stub. */
if (local_p)
sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
else
{
BFD_ASSERT (h->need_fn_stub);
sec = h->fn_stub;
}
symbol = sec->output_section->vma + sec->output_offset;
}
/* If this is a 16-bit call to a 32-bit function with a stub, we
need to redirect the call to the stub. */
else if (r_type == R_MIPS16_26 && !info->relocateable
&& h != NULL
&& (h->call_stub != NULL || h->call_fp_stub != NULL)
&& !target_is_16_bit_code_p)
{
/* If both call_stub and call_fp_stub are defined, we can figure
out which one to use by seeing which one appears in the input
file. */
if (h->call_stub != NULL && h->call_fp_stub != NULL)
{
asection *o;
sec = NULL;
for (o = input_bfd->sections; o != NULL; o = o->next)
{
if (strncmp (bfd_get_section_name (input_bfd, o),
CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
{
sec = h->call_fp_stub;
break;
}
}
if (sec == NULL)
sec = h->call_stub;
}
else if (h->call_stub != NULL)
sec = h->call_stub;
else
sec = h->call_fp_stub;
BFD_ASSERT (sec->_raw_size > 0);
symbol = sec->output_section->vma + sec->output_offset;
}
/* Calls from 16-bit code to 32-bit code and vice versa require the
special jalx instruction. */
*require_jalxp = (!info->relocateable
&& ((r_type == R_MIPS16_26) != target_is_16_bit_code_p));
local_p = mips_elf_local_relocation_p (input_bfd, relocation,
local_sections, true);
/* If we haven't already determined the GOT offset, or the GP value,
and we're going to need it, get it now. */
switch (r_type)
{
case R_MIPS_CALL16:
case R_MIPS_GOT16:
case R_MIPS_GOT_DISP:
case R_MIPS_GOT_HI16:
case R_MIPS_CALL_HI16:
case R_MIPS_GOT_LO16:
case R_MIPS_CALL_LO16:
/* Find the index into the GOT where this value is located. */
if (!local_p)
{
BFD_ASSERT (addend == 0);
g = mips_elf_global_got_index
(elf_hash_table (info)->dynobj,
(struct elf_link_hash_entry *) h);
if (! elf_hash_table(info)->dynamic_sections_created
|| (info->shared
&& (info->symbolic || h->root.dynindx == -1)
&& (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
{
/* This is a static link or a -Bsymbolic link. The
symbol is defined locally, or was forced to be local.
We must initialize this entry in the GOT. */
asection *sgot = mips_elf_got_section(elf_hash_table
(info)->dynobj);
MIPS_ELF_PUT_WORD (elf_hash_table (info)->dynobj,
symbol + addend, sgot->contents + g);
}
}
else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16)
/* There's no need to create a local GOT entry here; the
calculation for a local GOT16 entry does not involve G. */
break;
else
{
g = mips_elf_local_got_index (abfd, info, symbol + addend);
if (g == (bfd_vma) -1)
return false;
}
/* Convert GOT indices to actual offsets. */
g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
abfd, g);
break;
case R_MIPS_HI16:
case R_MIPS_LO16:
case R_MIPS_GPREL16:
case R_MIPS_GPREL32:
case R_MIPS_LITERAL:
gp0 = _bfd_get_gp_value (input_bfd);
gp = _bfd_get_gp_value (abfd);
break;
default:
break;
}
/* Figure out what kind of relocation is being performed. */
switch (r_type)
{
case R_MIPS_NONE:
return bfd_reloc_continue;
case R_MIPS_16:
value = symbol + mips_elf_sign_extend (addend, 16);
overflowed_p = mips_elf_overflow_p (value, 16);
break;
case R_MIPS_32:
case R_MIPS_REL32:
case R_MIPS_64:
if ((info->shared
|| (elf_hash_table (info)->dynamic_sections_created
&& h != NULL
&& ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)
!= 0)))
&& (input_section->flags & SEC_ALLOC) != 0)
{
/* If we're creating a shared library, or this relocation is
against a symbol in a shared library, then we can't know
where the symbol will end up. So, we create a relocation
record in the output, and leave the job up to the dynamic
linker. */
value = addend;
if (!mips_elf_create_dynamic_relocation (abfd,
info,
relocation,
h,
sec,
symbol,
&value,
input_section))
return false;
}
else
{
if (r_type != R_MIPS_REL32)
value = symbol + addend;
else
value = addend;
}
value &= howto->dst_mask;
break;
case R_MIPS_PC32:
case R_MIPS_PC64:
case R_MIPS_GNU_REL_LO16:
value = symbol + addend - p;
value &= howto->dst_mask;
break;
case R_MIPS_GNU_REL16_S2:
value = symbol + mips_elf_sign_extend (addend << 2, 18) - p;
overflowed_p = mips_elf_overflow_p (value, 18);
value = (value >> 2) & howto->dst_mask;
break;
case R_MIPS_GNU_REL_HI16:
value = mips_elf_high (addend + symbol - p);
value &= howto->dst_mask;
break;
case R_MIPS16_26:
/* The calculation for R_MIPS16_26 is just the same as for an
R_MIPS_26. It's only the storage of the relocated field into
the output file that's different. That's handled in
mips_elf_perform_relocation. So, we just fall through to the
R_MIPS_26 case here. */
case R_MIPS_26:
if (local_p)
value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2;
else
value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
value &= howto->dst_mask;
break;
case R_MIPS_HI16:
if (!gp_disp_p)
{
value = mips_elf_high (addend + symbol);
value &= howto->dst_mask;
}
else
{
value = mips_elf_high (addend + gp - p);
overflowed_p = mips_elf_overflow_p (value, 16);
}
break;
case R_MIPS_LO16:
if (!gp_disp_p)
value = (symbol + addend) & howto->dst_mask;
else
{
value = addend + gp - p + 4;
/* The MIPS ABI requires checking the R_MIPS_LO16 relocation
for overflow. But, on, say, Irix 5, relocations against
_gp_disp are normally generated from the .cpload
pseudo-op. It generates code that normally looks like
this:
lui $gp,%hi(_gp_disp)
addiu $gp,$gp,%lo(_gp_disp)
addu $gp,$gp,$t9
Here $t9 holds the address of the function being called,
as required by the MIPS ELF ABI. The R_MIPS_LO16
relocation can easily overflow in this situation, but the
R_MIPS_HI16 relocation will handle the overflow.
Therefore, we consider this a bug in the MIPS ABI, and do
not check for overflow here. */
}
break;
case R_MIPS_LITERAL:
/* Because we don't merge literal sections, we can handle this
just like R_MIPS_GPREL16. In the long run, we should merge
shared literals, and then we will need to additional work
here. */
/* Fall through. */
case R_MIPS16_GPREL:
/* The R_MIPS16_GPREL performs the same calculation as
R_MIPS_GPREL16, but stores the relocated bits in a different
order. We don't need to do anything special here; the
differences are handled in mips_elf_perform_relocation. */
case R_MIPS_GPREL16:
if (local_p)
value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp;
else
value = mips_elf_sign_extend (addend, 16) + symbol - gp;
overflowed_p = mips_elf_overflow_p (value, 16);
break;
case R_MIPS_GOT16:
case R_MIPS_CALL16:
if (local_p)
{
boolean forced;
/* The special case is when the symbol is forced to be local. We
need the full address in the GOT since no R_MIPS_LO16 relocation
follows. */
forced = ! mips_elf_local_relocation_p (input_bfd, relocation,
local_sections, false);
value = mips_elf_got16_entry (abfd, info, symbol + addend, forced);
if (value == (bfd_vma) -1)
return false;
value
= mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
abfd,
value);
overflowed_p = mips_elf_overflow_p (value, 16);
break;
}
/* Fall through. */
case R_MIPS_GOT_DISP:
value = g;
overflowed_p = mips_elf_overflow_p (value, 16);
break;
case R_MIPS_GPREL32:
value = (addend + symbol + gp0 - gp) & howto->dst_mask;
break;
case R_MIPS_PC16:
value = mips_elf_sign_extend (addend, 16) + symbol - p;
overflowed_p = mips_elf_overflow_p (value, 16);
value = (bfd_vma) ((bfd_signed_vma) value / 4);
break;
case R_MIPS_GOT_HI16:
case R_MIPS_CALL_HI16:
/* We're allowed to handle these two relocations identically.
The dynamic linker is allowed to handle the CALL relocations
differently by creating a lazy evaluation stub. */
value = g;
value = mips_elf_high (value);
value &= howto->dst_mask;
break;
case R_MIPS_GOT_LO16:
case R_MIPS_CALL_LO16:
value = g & howto->dst_mask;
break;
case R_MIPS_GOT_PAGE:
value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
if (value == (bfd_vma) -1)
return false;
value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
abfd,
value);
overflowed_p = mips_elf_overflow_p (value, 16);
break;
case R_MIPS_GOT_OFST:
mips_elf_got_page (abfd, info, symbol + addend, &value);
overflowed_p = mips_elf_overflow_p (value, 16);
break;
case R_MIPS_SUB:
value = symbol - addend;
value &= howto->dst_mask;
break;
case R_MIPS_HIGHER:
value = mips_elf_higher (addend + symbol);
value &= howto->dst_mask;
break;
case R_MIPS_HIGHEST:
value = mips_elf_highest (addend + symbol);
value &= howto->dst_mask;
break;
case R_MIPS_SCN_DISP:
value = symbol + addend - sec->output_offset;
value &= howto->dst_mask;
break;
case R_MIPS_PJUMP:
case R_MIPS_JALR:
/* Both of these may be ignored. R_MIPS_JALR is an optimization
hint; we could improve performance by honoring that hint. */
return bfd_reloc_continue;
case R_MIPS_GNU_VTINHERIT:
case R_MIPS_GNU_VTENTRY:
/* We don't do anything with these at present. */
return bfd_reloc_continue;
default:
/* An unrecognized relocation type. */
return bfd_reloc_notsupported;
}
/* Store the VALUE for our caller. */
*valuep = value;
return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
}
/* Obtain the field relocated by RELOCATION. */
static bfd_vma
mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
reloc_howto_type *howto;
const Elf_Internal_Rela *relocation;
bfd *input_bfd;
bfd_byte *contents;
{
bfd_vma x;
bfd_byte *location = contents + relocation->r_offset;
/* Obtain the bytes. */
x = bfd_get (((bfd_vma)(8 * bfd_get_reloc_size (howto))), input_bfd, location);
if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26
|| ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL)
&& bfd_little_endian (input_bfd))
/* The two 16-bit words will be reversed on a little-endian
system. See mips_elf_perform_relocation for more details. */
x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
return x;
}
/* It has been determined that the result of the RELOCATION is the
VALUE. Use HOWTO to place VALUE into the output file at the
appropriate position. The SECTION is the section to which the
relocation applies. If REQUIRE_JALX is true, then the opcode used
for the relocation must be either JAL or JALX, and it is
unconditionally converted to JALX.
Returns false if anything goes wrong. */
static boolean
mips_elf_perform_relocation (info, howto, relocation, value,
input_bfd, input_section,
contents, require_jalx)
struct bfd_link_info *info;
reloc_howto_type *howto;
const Elf_Internal_Rela *relocation;
bfd_vma value;
bfd *input_bfd;
asection *input_section;
bfd_byte *contents;
boolean require_jalx;
{
bfd_vma x;
bfd_byte *location;
int r_type = ELF32_R_TYPE (relocation->r_info);
/* Figure out where the relocation is occurring. */
location = contents + relocation->r_offset;
/* Obtain the current value. */
x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
/* Clear the field we are setting. */
x &= ~howto->dst_mask;
/* If this is the R_MIPS16_26 relocation, we must store the
value in a funny way. */
if (r_type == R_MIPS16_26)
{
/* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
Most mips16 instructions are 16 bits, but these instructions
are 32 bits.
The format of these instructions is:
+--------------+--------------------------------+
! JALX ! X! Imm 20:16 ! Imm 25:21 !
+--------------+--------------------------------+
! Immediate 15:0 !
+-----------------------------------------------+
JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
Note that the immediate value in the first word is swapped.
When producing a relocateable object file, R_MIPS16_26 is
handled mostly like R_MIPS_26. In particular, the addend is
stored as a straight 26-bit value in a 32-bit instruction.
(gas makes life simpler for itself by never adjusting a
R_MIPS16_26 reloc to be against a section, so the addend is
always zero). However, the 32 bit instruction is stored as 2
16-bit values, rather than a single 32-bit value. In a
big-endian file, the result is the same; in a little-endian
file, the two 16-bit halves of the 32 bit value are swapped.
This is so that a disassembler can recognize the jal
instruction.
When doing a final link, R_MIPS16_26 is treated as a 32 bit
instruction stored as two 16-bit values. The addend A is the
contents of the targ26 field. The calculation is the same as
R_MIPS_26. When storing the calculated value, reorder the
immediate value as shown above, and don't forget to store the
value as two 16-bit values.
To put it in MIPS ABI terms, the relocation field is T-targ26-16,
defined as
big-endian:
+--------+----------------------+
| | |
| | targ26-16 |
|31 26|25 0|
+--------+----------------------+
little-endian:
+----------+------+-------------+
| | | |
| sub1 | | sub2 |
|0 9|10 15|16 31|
+----------+--------------------+
where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
((sub1 << 16) | sub2)).
When producing a relocateable object file, the calculation is
(((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
When producing a fully linked file, the calculation is
let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
if (!info->relocateable)
/* Shuffle the bits according to the formula above. */
value = (((value & 0x1f0000) << 5)
| ((value & 0x3e00000) >> 5)
| (value & 0xffff));
}
else if (r_type == R_MIPS16_GPREL)
{
/* R_MIPS16_GPREL is used for GP-relative addressing in mips16
mode. A typical instruction will have a format like this:
+--------------+--------------------------------+
! EXTEND ! Imm 10:5 ! Imm 15:11 !
+--------------+--------------------------------+
! Major ! rx ! ry ! Imm 4:0 !
+--------------+--------------------------------+
EXTEND is the five bit value 11110. Major is the instruction
opcode.
This is handled exactly like R_MIPS_GPREL16, except that the
addend is retrieved and stored as shown in this diagram; that
is, the Imm fields above replace the V-rel16 field.
All we need to do here is shuffle the bits appropriately. As
above, the two 16-bit halves must be swapped on a
little-endian system. */
value = (((value & 0x7e0) << 16)
| ((value & 0xf800) << 5)
| (value & 0x1f));
}
/* Set the field. */
x |= (value & howto->dst_mask);
/* If required, turn JAL into JALX. */
if (require_jalx)
{
boolean ok;
bfd_vma opcode = x >> 26;
bfd_vma jalx_opcode;
/* Check to see if the opcode is already JAL or JALX. */
if (r_type == R_MIPS16_26)
{
ok = ((opcode == 0x6) || (opcode == 0x7));
jalx_opcode = 0x7;
}
else
{
ok = ((opcode == 0x3) || (opcode == 0x1d));
jalx_opcode = 0x1d;
}
/* If the opcode is not JAL or JALX, there's a problem. */
if (!ok)
{
(*_bfd_error_handler)
(_("%s: %s+0x%lx: jump to stub routine which is not jal"),
bfd_archive_filename (input_bfd),
input_section->name,
(unsigned long) relocation->r_offset);
bfd_set_error (bfd_error_bad_value);
return false;
}
/* Make this the JALX opcode. */
x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
}
/* Swap the high- and low-order 16 bits on little-endian systems
when doing a MIPS16 relocation. */
if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
&& bfd_little_endian (input_bfd))
x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
/* Put the value into the output. */
bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
return true;
}
/* Returns true if SECTION is a MIPS16 stub section. */
static boolean
mips_elf_stub_section_p (abfd, section)
bfd *abfd ATTRIBUTE_UNUSED;
asection *section;
{
const char *name = bfd_get_section_name (abfd, section);
return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
|| strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
|| strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
}
/* Relocate a MIPS ELF section. */
boolean
_bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
contents, relocs, local_syms, local_sections)
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_Rela *rel;
const Elf_Internal_Rela *relend;
bfd_vma addend = 0;
boolean use_saved_addend_p = false;
struct elf_backend_data *bed;
bed = get_elf_backend_data (output_bfd);
relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
for (rel = relocs; rel < relend; ++rel)
{
const char *name;
bfd_vma value;
reloc_howto_type *howto;
boolean require_jalx;
/* True if the relocation is a RELA relocation, rather than a
REL relocation. */
boolean rela_relocation_p = true;
unsigned int r_type = ELF32_R_TYPE (rel->r_info);
const char * msg = (const char *) NULL;
/* Find the relocation howto for this relocation. */
if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
{
/* Some 32-bit code uses R_MIPS_64. In particular, people use
64-bit code, but make sure all their addresses are in the
lowermost or uppermost 32-bit section of the 64-bit address
space. Thus, when they use an R_MIPS_64 they mean what is
usually meant by R_MIPS_32, with the exception that the
stored value is sign-extended to 64 bits. */
howto = elf_mips_howto_table + R_MIPS_32;
/* On big-endian systems, we need to lie about the position
of the reloc. */
if (bfd_big_endian (input_bfd))
rel->r_offset += 4;
}
else
howto = mips_rtype_to_howto (r_type);
if (!use_saved_addend_p)
{
Elf_Internal_Shdr *rel_hdr;
/* If these relocations were originally of the REL variety,
we must pull the addend out of the field that will be
relocated. Otherwise, we simply use the contents of the
RELA relocation. To determine which flavor or relocation
this is, we depend on the fact that the INPUT_SECTION's
REL_HDR is read before its REL_HDR2. */
rel_hdr = &elf_section_data (input_section)->rel_hdr;
if ((size_t) (rel - relocs)
>= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel))
rel_hdr = elf_section_data (input_section)->rel_hdr2;
if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
{
/* Note that this is a REL relocation. */
rela_relocation_p = false;
/* Get the addend, which is stored in the input file. */
addend = mips_elf_obtain_contents (howto,
rel,
input_bfd,
contents);
addend &= howto->src_mask;
/* For some kinds of relocations, the ADDEND is a
combination of the addend stored in two different
relocations. */
if (r_type == R_MIPS_HI16
|| r_type == R_MIPS_GNU_REL_HI16
|| (r_type == R_MIPS_GOT16
&& mips_elf_local_relocation_p (input_bfd, rel,
local_sections, false)))
{
bfd_vma l;
const Elf_Internal_Rela *lo16_relocation;
reloc_howto_type *lo16_howto;
unsigned int lo;
/* The combined value is the sum of the HI16 addend,
left-shifted by sixteen bits, and the LO16
addend, sign extended. (Usually, the code does
a `lui' of the HI16 value, and then an `addiu' of
the LO16 value.)
Scan ahead to find a matching LO16 relocation. */
if (r_type == R_MIPS_GNU_REL_HI16)
lo = R_MIPS_GNU_REL_LO16;
else
lo = R_MIPS_LO16;
lo16_relocation
= mips_elf_next_relocation (lo, rel, relend);
if (lo16_relocation == NULL)
return false;
/* Obtain the addend kept there. */
lo16_howto = mips_rtype_to_howto (lo);
l = mips_elf_obtain_contents (lo16_howto,
lo16_relocation,
input_bfd, contents);
l &= lo16_howto->src_mask;
l = mips_elf_sign_extend (l, 16);
addend <<= 16;
/* Compute the combined addend. */
addend += l;
}
else if (r_type == R_MIPS16_GPREL)
{
/* The addend is scrambled in the object file. See
mips_elf_perform_relocation for details on the
format. */
addend = (((addend & 0x1f0000) >> 5)
| ((addend & 0x7e00000) >> 16)
| (addend & 0x1f));
}
}
else
addend = rel->r_addend;
}
if (info->relocateable)
{
Elf_Internal_Sym *sym;
unsigned long r_symndx;
if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)
&& bfd_big_endian (input_bfd))
rel->r_offset -= 4;
/* Since we're just relocating, all we need to do is copy
the relocations back out to the object file, unless
they're against a section symbol, in which case we need
to adjust by the section offset, or unless they're GP
relative in which case we need to adjust by the amount
that we're adjusting GP in this relocateable object. */
if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections,
false))
/* There's nothing to do for non-local relocations. */
continue;
if (r_type == R_MIPS16_GPREL
|| r_type == R_MIPS_GPREL16
|| r_type == R_MIPS_GPREL32
|| r_type == R_MIPS_LITERAL)
addend -= (_bfd_get_gp_value (output_bfd)
- _bfd_get_gp_value (input_bfd));
else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
|| r_type == R_MIPS_GNU_REL16_S2)
/* The addend is stored without its two least
significant bits (which are always zero.) In a
non-relocateable link, calculate_relocation will do
this shift; here, we must do it ourselves. */
addend <<= 2;
r_symndx = ELF32_R_SYM (rel->r_info);
sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
/* Adjust the addend appropriately. */
addend += local_sections[r_symndx]->output_offset;
/* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
then we only want to write out the high-order 16 bits.
The subsequent R_MIPS_LO16 will handle the low-order bits. */
if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
|| r_type == R_MIPS_GNU_REL_HI16)
addend = mips_elf_high (addend);
/* If the relocation is for an R_MIPS_26 relocation, then
the two low-order bits are not stored in the object file;
they are implicitly zero. */
else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
|| r_type == R_MIPS_GNU_REL16_S2)
addend >>= 2;
if (rela_relocation_p)
/* If this is a RELA relocation, just update the addend.
We have to cast away constness for REL. */
rel->r_addend = addend;
else
{
/* Otherwise, we have to write the value back out. Note
that we use the source mask, rather than the
destination mask because the place to which we are
writing will be source of the addend in the final
link. */
addend &= howto->src_mask;
if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
/* See the comment above about using R_MIPS_64 in the 32-bit
ABI. Here, we need to update the addend. It would be
possible to get away with just using the R_MIPS_32 reloc
but for endianness. */
{
bfd_vma sign_bits;
bfd_vma low_bits;
bfd_vma high_bits;
if (addend & ((bfd_vma) 1 << 31))
#ifdef BFD64
sign_bits = ((bfd_vma) 1 << 32) - 1;
#else
sign_bits = -1;
#endif
else
sign_bits = 0;
/* If we don't know that we have a 64-bit type,
do two separate stores. */
if (bfd_big_endian (input_bfd))
{
/* Store the sign-bits (which are most significant)
first. */
low_bits = sign_bits;
high_bits = addend;
}
else
{
low_bits = addend;
high_bits = sign_bits;
}
bfd_put_32 (input_bfd, low_bits,
contents + rel->r_offset);
bfd_put_32 (input_bfd, high_bits,
contents + rel->r_offset + 4);
continue;
}
if (!mips_elf_perform_relocation (info, howto, rel, addend,
input_bfd, input_section,
contents, false))
return false;
}
/* Go on to the next relocation. */
continue;
}
/* In the N32 and 64-bit ABIs there may be multiple consecutive
relocations for the same offset. In that case we are
supposed to treat the output of each relocation as the addend
for the next. */
if (rel + 1 < relend
&& rel->r_offset == rel[1].r_offset
&& ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
use_saved_addend_p = true;
else
use_saved_addend_p = false;
/* Figure out what value we are supposed to relocate. */
switch (mips_elf_calculate_relocation (output_bfd,
input_bfd,
input_section,
info,
rel,
addend,
howto,
local_syms,
local_sections,
&value,
&name,
&require_jalx))
{
case bfd_reloc_continue:
/* There's nothing to do. */
continue;
case bfd_reloc_undefined:
/* mips_elf_calculate_relocation already called the
undefined_symbol callback. There's no real point in
trying to perform the relocation at this point, so we
just skip ahead to the next relocation. */
continue;
case bfd_reloc_notsupported:
msg = _("internal error: unsupported relocation error");
info->callbacks->warning
(info, msg, name, input_bfd, input_section, rel->r_offset);
return false;
case bfd_reloc_overflow:
if (use_saved_addend_p)
/* Ignore overflow until we reach the last relocation for
a given location. */
;
else
{
BFD_ASSERT (name != NULL);
if (! ((*info->callbacks->reloc_overflow)
(info, name, howto->name, (bfd_vma) 0,
input_bfd, input_section, rel->r_offset)))
return false;
}
break;
case bfd_reloc_ok:
break;
default:
abort ();
break;
}
/* If we've got another relocation for the address, keep going
until we reach the last one. */
if (use_saved_addend_p)
{
addend = value;
continue;
}
if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
/* See the comment above about using R_MIPS_64 in the 32-bit
ABI. Until now, we've been using the HOWTO for R_MIPS_32;
that calculated the right value. Now, however, we
sign-extend the 32-bit result to 64-bits, and store it as a
64-bit value. We are especially generous here in that we
go to extreme lengths to support this usage on systems with
only a 32-bit VMA. */
{
bfd_vma sign_bits;
bfd_vma low_bits;
bfd_vma high_bits;
if (value & ((bfd_vma) 1 << 31))
#ifdef BFD64
sign_bits = ((bfd_vma) 1 << 32) - 1;
#else
sign_bits = -1;
#endif
else
sign_bits = 0;
/* If we don't know that we have a 64-bit type,
do two separate stores. */
if (bfd_big_endian (input_bfd))
{
/* Undo what we did above. */
rel->r_offset -= 4;
/* Store the sign-bits (which are most significant)
first. */
low_bits = sign_bits;
high_bits = value;
}
else
{
low_bits = value;
high_bits = sign_bits;
}
bfd_put_32 (input_bfd, low_bits,
contents + rel->r_offset);
bfd_put_32 (input_bfd, high_bits,
contents + rel->r_offset + 4);
continue;
}
/* Actually perform the relocation. */
if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd,
input_section, contents,
require_jalx))
return false;
}
return true;
}
/* This hook function is called before the linker writes out a global
symbol. We mark symbols as small common if appropriate. This is
also where we undo the increment of the value for a mips16 symbol. */
boolean
_bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
bfd *abfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
const char *name ATTRIBUTE_UNUSED;
Elf_Internal_Sym *sym;
asection *input_sec;
{
/* If we see a common symbol, which implies a relocatable link, then
if a symbol was small common in an input file, mark it as small
common in the output file. */
if (sym->st_shndx == SHN_COMMON
&& strcmp (input_sec->name, ".scommon") == 0)
sym->st_shndx = SHN_MIPS_SCOMMON;
if (sym->st_other == STO_MIPS16
&& (sym->st_value & 1) != 0)
--sym->st_value;
return true;
}
/* Functions for the dynamic linker. */
/* The name of the dynamic interpreter. This is put in the .interp
section. */
#define ELF_DYNAMIC_INTERPRETER(abfd) \
(ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
: ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
: "/usr/lib/libc.so.1")
/* Create dynamic sections when linking against a dynamic object. */
boolean
_bfd_mips_elf_create_dynamic_sections (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
struct elf_link_hash_entry *h;
flagword flags;
register asection *s;
const char * const *namep;
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED | SEC_READONLY);
/* Mips ABI requests the .dynamic section to be read only. */
s = bfd_get_section_by_name (abfd, ".dynamic");
if (s != NULL)
{
if (! bfd_set_section_flags (abfd, s, flags))
return false;
}
/* We need to create .got section. */
if (! mips_elf_create_got_section (abfd, info))
return false;
/* Create the .msym section on IRIX6. It is used by the dynamic
linker to speed up dynamic relocations, and to avoid computing
the ELF hash for symbols. */
if (IRIX_COMPAT (abfd) == ict_irix6
&& !mips_elf_create_msym_section (abfd))
return false;
/* Create .stub section. */
if (bfd_get_section_by_name (abfd,
MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
{
s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
|| ! bfd_set_section_alignment (abfd, s,
MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return false;
}
if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
&& !info->shared
&& bfd_get_section_by_name (abfd, ".rld_map") == NULL)
{
s = bfd_make_section (abfd, ".rld_map");
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags &~ (flagword) SEC_READONLY)
|| ! bfd_set_section_alignment (abfd, s,
MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return false;
}
/* On IRIX5, we adjust add some additional symbols and change the
alignments of several sections. There is no ABI documentation
indicating that this is necessary on IRIX6, nor any evidence that
the linker takes such action. */
if (IRIX_COMPAT (abfd) == ict_irix5)
{
for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
{
h = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
(bfd_vma) 0, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_SECTION;
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return false;
}
/* We need to create a .compact_rel section. */
if (SGI_COMPAT (abfd))
{
if (!mips_elf_create_compact_rel_section (abfd, info))
return false;
}
/* Change aligments of some sections. */
s = bfd_get_section_by_name (abfd, ".hash");
if (s != NULL)
bfd_set_section_alignment (abfd, s, 4);
s = bfd_get_section_by_name (abfd, ".dynsym");
if (s != NULL)
bfd_set_section_alignment (abfd, s, 4);
s = bfd_get_section_by_name (abfd, ".dynstr");
if (s != NULL)
bfd_set_section_alignment (abfd, s, 4);
s = bfd_get_section_by_name (abfd, ".reginfo");
if (s != NULL)
bfd_set_section_alignment (abfd, s, 4);
s = bfd_get_section_by_name (abfd, ".dynamic");
if (s != NULL)
bfd_set_section_alignment (abfd, s, 4);
}
if (!info->shared)
{
h = NULL;
if (SGI_COMPAT (abfd))
{
if (!(_bfd_generic_link_add_one_symbol
(info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
(bfd_vma) 0, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
}
else
{
/* For normal mips it is _DYNAMIC_LINKING. */
if (!(_bfd_generic_link_add_one_symbol
(info, abfd, "_DYNAMIC_LINKING", BSF_GLOBAL,
bfd_abs_section_ptr, (bfd_vma) 0, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
}
h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_SECTION;
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return false;
if (! mips_elf_hash_table (info)->use_rld_obj_head)
{
/* __rld_map is a four byte word located in the .data section
and is filled in by the rtld to contain a pointer to
the _r_debug structure. Its symbol value will be set in
mips_elf_finish_dynamic_symbol. */
s = bfd_get_section_by_name (abfd, ".rld_map");
BFD_ASSERT (s != NULL);
h = NULL;
if (SGI_COMPAT (abfd))
{
if (!(_bfd_generic_link_add_one_symbol
(info, abfd, "__rld_map", BSF_GLOBAL, s,
(bfd_vma) 0, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
}
else
{
/* For normal mips the symbol is __RLD_MAP. */
if (!(_bfd_generic_link_add_one_symbol
(info, abfd, "__RLD_MAP", BSF_GLOBAL, s,
(bfd_vma) 0, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
}
h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return false;
}
}
return true;
}
/* Create the .compact_rel section. */
static boolean
mips_elf_create_compact_rel_section (abfd, info)
bfd *abfd;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
{
flagword flags;
register asection *s;
if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
{
flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
| SEC_READONLY);
s = bfd_make_section (abfd, ".compact_rel");
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags)
|| ! bfd_set_section_alignment (abfd, s,
MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return false;
s->_raw_size = sizeof (Elf32_External_compact_rel);
}
return true;
}
/* Create the .got section to hold the global offset table. */
static boolean
mips_elf_create_got_section (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
flagword flags;
register asection *s;
struct elf_link_hash_entry *h;
struct mips_got_info *g;
bfd_size_type amt;
/* This function may be called more than once. */
if (mips_elf_got_section (abfd))
return true;
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED);
s = bfd_make_section (abfd, ".got");
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags)
|| ! bfd_set_section_alignment (abfd, s, 4))
return false;
/* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
linker script because we don't want to define the symbol if we
are not creating a global offset table. */
h = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
(bfd_vma) 0, (const char *) NULL, false,
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
if (info->shared
&& ! bfd_elf32_link_record_dynamic_symbol (info, h))
return false;
/* The first several global offset table entries are reserved. */
s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
amt = sizeof (struct mips_got_info);
g = (struct mips_got_info *) bfd_alloc (abfd, amt);
if (g == NULL)
return false;
g->global_gotsym = NULL;
g->local_gotno = MIPS_RESERVED_GOTNO;
g->assigned_gotno = MIPS_RESERVED_GOTNO;
if (elf_section_data (s) == NULL)
{
amt = sizeof (struct bfd_elf_section_data);
s->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
if (elf_section_data (s) == NULL)
return false;
}
elf_section_data (s)->tdata = (PTR) g;
elf_section_data (s)->this_hdr.sh_flags
|= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
return true;
}
/* Returns the .msym section for ABFD, creating it if it does not
already exist. Returns NULL to indicate error. */
static asection *
mips_elf_create_msym_section (abfd)
bfd *abfd;
{
asection *s;
s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
if (!s)
{
s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
if (!s
|| !bfd_set_section_flags (abfd, s,
SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_LINKER_CREATED
| SEC_READONLY)
|| !bfd_set_section_alignment (abfd, s,
MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return NULL;
}
return s;
}
/* Add room for N relocations to the .rel.dyn section in ABFD. */
static void
mips_elf_allocate_dynamic_relocations (abfd, n)
bfd *abfd;
unsigned int n;
{
asection *s;
s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd));
BFD_ASSERT (s != NULL);
if (s->_raw_size == 0)
{
/* Make room for a null element. */
s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
++s->reloc_count;
}
s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
}
/* Look through the relocs for a section during the first phase, and
allocate space in the global offset table. */
boolean
_bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *relocs;
{
const char *name;
bfd *dynobj;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
struct mips_got_info *g;
size_t extsymoff;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sgot;
asection *sreloc;
struct elf_backend_data *bed;
if (info->relocateable)
return true;
dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
/* Check for the mips16 stub sections. */
name = bfd_get_section_name (abfd, sec);
if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
{
unsigned long r_symndx;
/* Look at the relocation information to figure out which symbol
this is for. */
r_symndx = ELF32_R_SYM (relocs->r_info);
if (r_symndx < extsymoff
|| sym_hashes[r_symndx - extsymoff] == NULL)
{
asection *o;
/* This stub is for a local symbol. This stub will only be
needed if there is some relocation in this BFD, other
than a 16 bit function call, which refers to this symbol. */
for (o = abfd->sections; o != NULL; o = o->next)
{
Elf_Internal_Rela *sec_relocs;
const Elf_Internal_Rela *r, *rend;
/* We can ignore stub sections when looking for relocs. */
if ((o->flags & SEC_RELOC) == 0
|| o->reloc_count == 0
|| strncmp (bfd_get_section_name (abfd, o), FN_STUB,
sizeof FN_STUB - 1) == 0
|| strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
sizeof CALL_STUB - 1) == 0
|| strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
sizeof CALL_FP_STUB - 1) == 0)
continue;
sec_relocs = (_bfd_elf32_link_read_relocs
(abfd, o, (PTR) NULL,
(Elf_Internal_Rela *) NULL,
info->keep_memory));
if (sec_relocs == NULL)
return false;
rend = sec_relocs + o->reloc_count;
for (r = sec_relocs; r < rend; r++)
if (ELF32_R_SYM (r->r_info) == r_symndx
&& ELF32_R_TYPE (r->r_info) != R_MIPS16_26)
break;
if (! info->keep_memory)
free (sec_relocs);
if (r < rend)
break;
}
if (o == NULL)
{
/* There is no non-call reloc for this stub, so we do
not need it. Since this function is called before
the linker maps input sections to output sections, we
can easily discard it by setting the SEC_EXCLUDE
flag. */
sec->flags |= SEC_EXCLUDE;
return true;
}
/* Record this stub in an array of local symbol stubs for
this BFD. */
if (elf_tdata (abfd)->local_stubs == NULL)
{
unsigned long symcount;
asection **n;
bfd_size_type amt;
if (elf_bad_symtab (abfd))
symcount = NUM_SHDR_ENTRIES (symtab_hdr);
else
symcount = symtab_hdr->sh_info;
amt = symcount * sizeof (asection *);
n = (asection **) bfd_zalloc (abfd, amt);
if (n == NULL)
return false;
elf_tdata (abfd)->local_stubs = n;
}
elf_tdata (abfd)->local_stubs[r_symndx] = sec;
/* We don't need to set mips16_stubs_seen in this case.
That flag is used to see whether we need to look through
the global symbol table for stubs. We don't need to set
it here, because we just have a local stub. */
}
else
{
struct mips_elf_link_hash_entry *h;
h = ((struct mips_elf_link_hash_entry *)
sym_hashes[r_symndx - extsymoff]);
/* H is the symbol this stub is for. */
h->fn_stub = sec;
mips_elf_hash_table (info)->mips16_stubs_seen = true;
}
}
else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
|| strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
{
unsigned long r_symndx;
struct mips_elf_link_hash_entry *h;
asection **loc;
/* Look at the relocation information to figure out which symbol
this is for. */
r_symndx = ELF32_R_SYM (relocs->r_info);
if (r_symndx < extsymoff
|| sym_hashes[r_symndx - extsymoff] == NULL)
{
/* This stub was actually built for a static symbol defined
in the same file. We assume that all static symbols in
mips16 code are themselves mips16, so we can simply
discard this stub. Since this function is called before
the linker maps input sections to output sections, we can
easily discard it by setting the SEC_EXCLUDE flag. */
sec->flags |= SEC_EXCLUDE;
return true;
}
h = ((struct mips_elf_link_hash_entry *)
sym_hashes[r_symndx - extsymoff]);
/* H is the symbol this stub is for. */
if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
loc = &h->call_fp_stub;
else
loc = &h->call_stub;
/* If we already have an appropriate stub for this function, we
don't need another one, so we can discard this one. Since
this function is called before the linker maps input sections
to output sections, we can easily discard it by setting the
SEC_EXCLUDE flag. We can also discard this section if we
happen to already know that this is a mips16 function; it is
not necessary to check this here, as it is checked later, but
it is slightly faster to check now. */
if (*loc != NULL || h->root.other == STO_MIPS16)
{
sec->flags |= SEC_EXCLUDE;
return true;
}
*loc = sec;
mips_elf_hash_table (info)->mips16_stubs_seen = true;
}
if (dynobj == NULL)
{
sgot = NULL;
g = NULL;
}
else
{
sgot = mips_elf_got_section (dynobj);
if (sgot == NULL)
g = NULL;
else
{
BFD_ASSERT (elf_section_data (sgot) != NULL);
g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
BFD_ASSERT (g != NULL);
}
}
sreloc = NULL;
bed = get_elf_backend_data (abfd);
rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
for (rel = relocs; rel < rel_end; ++rel)
{
unsigned long r_symndx;
unsigned int r_type;
struct elf_link_hash_entry *h;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx < extsymoff)
h = NULL;
else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
{
(*_bfd_error_handler)
(_("%s: Malformed reloc detected for section %s"),
bfd_archive_filename (abfd), name);
bfd_set_error (bfd_error_bad_value);
return false;
}
else
{
h = sym_hashes[r_symndx - extsymoff];
/* This may be an indirect symbol created because of a version. */
if (h != NULL)
{
while (h->root.type == bfd_link_hash_indirect)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
}
/* Some relocs require a global offset table. */
if (dynobj == NULL || sgot == NULL)
{
switch (r_type)
{
case R_MIPS_GOT16:
case R_MIPS_CALL16:
case R_MIPS_CALL_HI16:
case R_MIPS_CALL_LO16:
case R_MIPS_GOT_HI16:
case R_MIPS_GOT_LO16:
case R_MIPS_GOT_PAGE:
case R_MIPS_GOT_OFST:
case R_MIPS_GOT_DISP:
if (dynobj == NULL)
elf_hash_table (info)->dynobj = dynobj = abfd;
if (! mips_elf_create_got_section (dynobj, info))
return false;
g = mips_elf_got_info (dynobj, &sgot);
break;
case R_MIPS_32:
case R_MIPS_REL32:
case R_MIPS_64:
if (dynobj == NULL
&& (info->shared || h != NULL)
&& (sec->flags & SEC_ALLOC) != 0)
elf_hash_table (info)->dynobj = dynobj = abfd;
break;
default:
break;
}
}
if (!h && (r_type == R_MIPS_CALL_LO16
|| r_type == R_MIPS_GOT_LO16
|| r_type == R_MIPS_GOT_DISP))
{
/* We may need a local GOT entry for this relocation. We
don't count R_MIPS_GOT_PAGE because we can estimate the
maximum number of pages needed by looking at the size of
the segment. Similar comments apply to R_MIPS_GOT16 and
R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or
R_MIPS_CALL_HI16 because these are always followed by an
R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16.
This estimation is very conservative since we can merge
duplicate entries in the GOT. In order to be less
conservative, we could actually build the GOT here,
rather than in relocate_section. */
g->local_gotno++;
sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
}
switch (r_type)
{
case R_MIPS_CALL16:
if (h == NULL)
{
(*_bfd_error_handler)
(_("%s: CALL16 reloc at 0x%lx not against global symbol"),
bfd_archive_filename (abfd), (unsigned long) rel->r_offset);
bfd_set_error (bfd_error_bad_value);
return false;
}
/* Fall through. */
case R_MIPS_CALL_HI16:
case R_MIPS_CALL_LO16:
if (h != NULL)
{
/* This symbol requires a global offset table entry. */
if (!mips_elf_record_global_got_symbol (h, info, g))
return false;
/* We need a stub, not a plt entry for the undefined
function. But we record it as if it needs plt. See
elf_adjust_dynamic_symbol in elflink.h. */
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
h->type = STT_FUNC;
}
break;
case R_MIPS_GOT16:
case R_MIPS_GOT_HI16:
case R_MIPS_GOT_LO16:
case R_MIPS_GOT_DISP:
/* This symbol requires a global offset table entry. */
if (h && !mips_elf_record_global_got_symbol (h, info, g))
return false;
break;
case R_MIPS_32:
case R_MIPS_REL32:
case R_MIPS_64:
if ((info->shared || h != NULL)
&& (sec->flags & SEC_ALLOC) != 0)
{
if (sreloc == NULL)
{
const char *dname = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj);
sreloc = bfd_get_section_by_name (dynobj, dname);
if (sreloc == NULL)
{
sreloc = bfd_make_section (dynobj, dname);
if (sreloc == NULL
|| ! bfd_set_section_flags (dynobj, sreloc,
(SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
| SEC_READONLY))
|| ! bfd_set_section_alignment (dynobj, sreloc,
4))
return false;
}
}
#define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
if (info->shared)
{
/* When creating a shared object, we must copy these
reloc types into the output file as R_MIPS_REL32
relocs. We make room for this reloc in the
.rel.dyn reloc section. */
mips_elf_allocate_dynamic_relocations (dynobj, 1);
if ((sec->flags & MIPS_READONLY_SECTION)
== MIPS_READONLY_SECTION)
/* We tell the dynamic linker that there are
relocations against the text segment. */
info->flags |= DF_TEXTREL;
}
else
{
struct mips_elf_link_hash_entry *hmips;
/* We only need to copy this reloc if the symbol is
defined in a dynamic object. */
hmips = (struct mips_elf_link_hash_entry *) h;
++hmips->possibly_dynamic_relocs;
if ((sec->flags & MIPS_READONLY_SECTION)
== MIPS_READONLY_SECTION)
/* We need it to tell the dynamic linker if there
are relocations against the text segment. */
hmips->readonly_reloc = true;
}
/* Even though we don't directly need a GOT entry for
this symbol, a symbol must have a dynamic symbol
table index greater that DT_MIPS_GOTSYM if there are
dynamic relocations against it. */
if (h != NULL
&& !mips_elf_record_global_got_symbol (h, info, g))
return false;
}
if (SGI_COMPAT (abfd))
mips_elf_hash_table (info)->compact_rel_size +=
sizeof (Elf32_External_crinfo);
break;
case R_MIPS_26:
case R_MIPS_GPREL16:
case R_MIPS_LITERAL:
case R_MIPS_GPREL32:
if (SGI_COMPAT (abfd))
mips_elf_hash_table (info)->compact_rel_size +=
sizeof (Elf32_External_crinfo);
break;
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_MIPS_GNU_VTINHERIT:
if (!_bfd_elf32_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_MIPS_GNU_VTENTRY:
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
return false;
break;
default:
break;
}
/* We must not create a stub for a symbol that has relocations
related to taking the function's address. */
switch (r_type)
{
default:
if (h != NULL)
{
struct mips_elf_link_hash_entry *mh;
mh = (struct mips_elf_link_hash_entry *) h;
mh->no_fn_stub = true;
}
break;
case R_MIPS_CALL16:
case R_MIPS_CALL_HI16:
case R_MIPS_CALL_LO16:
break;
}
/* If this reloc is not a 16 bit call, and it has a global
symbol, then we will need the fn_stub if there is one.
References from a stub section do not count. */
if (h != NULL
&& r_type != R_MIPS16_26
&& strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
sizeof FN_STUB - 1) != 0
&& strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
sizeof CALL_STUB - 1) != 0
&& strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
sizeof CALL_FP_STUB - 1) != 0)
{
struct mips_elf_link_hash_entry *mh;
mh = (struct mips_elf_link_hash_entry *) h;
mh->need_fn_stub = true;
}
}
return true;
}
/* Return the section that should be marked against GC for a given
relocation. */
asection *
_bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
bfd *abfd;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
Elf_Internal_Rela *rel;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
/* ??? Do mips16 stub sections need to be handled special? */
if (h != NULL)
{
switch (ELF32_R_TYPE (rel->r_info))
{
case R_MIPS_GNU_VTINHERIT:
case R_MIPS_GNU_VTENTRY:
break;
default:
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
return h->root.u.def.section;
case bfd_link_hash_common:
return h->root.u.c.p->section;
default:
break;
}
}
}
else
{
if (!(elf_bad_symtab (abfd)
&& ELF_ST_BIND (sym->st_info) != STB_LOCAL)
&& ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
&& sym->st_shndx != SHN_COMMON))
{
return bfd_section_from_elf_index (abfd, sym->st_shndx);
}
}
return NULL;
}
/* Update the got entry reference counts for the section being removed. */
boolean
_bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
bfd *abfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
asection *sec ATTRIBUTE_UNUSED;
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
{
#if 0
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
local_got_refcounts = elf_local_got_refcounts (abfd);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
switch (ELF32_R_TYPE (rel->r_info))
{
case R_MIPS_GOT16:
case R_MIPS_CALL16:
case R_MIPS_CALL_HI16:
case R_MIPS_CALL_LO16:
case R_MIPS_GOT_HI16:
case R_MIPS_GOT_LO16:
/* ??? It would seem that the existing MIPS code does no sort
of reference counting or whatnot on its GOT and PLT entries,
so it is not possible to garbage collect them at this time. */
break;
default:
break;
}
#endif
return true;
}
/* Copy data from a MIPS ELF indirect symbol to its direct symbol,
hiding the old indirect symbol. Process additional relocation
information. Also called for weakdefs, in which case we just let
_bfd_elf_link_hash_copy_indirect copy the flags for us. */
static void
_bfd_mips_elf_copy_indirect_symbol (dir, ind)
struct elf_link_hash_entry *dir, *ind;
{
struct mips_elf_link_hash_entry *dirmips, *indmips;
_bfd_elf_link_hash_copy_indirect (dir, ind);
if (ind->root.type != bfd_link_hash_indirect)
return;
dirmips = (struct mips_elf_link_hash_entry *) dir;
indmips = (struct mips_elf_link_hash_entry *) ind;
dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs;
if (indmips->readonly_reloc)
dirmips->readonly_reloc = true;
if (dirmips->min_dyn_reloc_index == 0
|| (indmips->min_dyn_reloc_index != 0
&& indmips->min_dyn_reloc_index < dirmips->min_dyn_reloc_index))
dirmips->min_dyn_reloc_index = indmips->min_dyn_reloc_index;
if (indmips->no_fn_stub)
dirmips->no_fn_stub = true;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
change the definition to something the rest of the link can
understand. */
boolean
_bfd_mips_elf_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
{
bfd *dynobj;
struct mips_elf_link_hash_entry *hmips;
asection *s;
dynobj = elf_hash_table (info)->dynobj;
/* Make sure we know what is going on here. */
BFD_ASSERT (dynobj != NULL
&& ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
|| h->weakdef != NULL
|| ((h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC) != 0
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR) != 0
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0)));
/* If this symbol is defined in a dynamic object, we need to copy
any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
file. */
hmips = (struct mips_elf_link_hash_entry *) h;
if (! info->relocateable
&& hmips->possibly_dynamic_relocs != 0
&& (h->root.type == bfd_link_hash_defweak
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))
{
mips_elf_allocate_dynamic_relocations (dynobj,
hmips->possibly_dynamic_relocs);
if (hmips->readonly_reloc)
/* We tell the dynamic linker that there are relocations
against the text segment. */
info->flags |= DF_TEXTREL;
}
/* For a function, create a stub, if allowed. */
if (! hmips->no_fn_stub
&& (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
{
if (! elf_hash_table (info)->dynamic_sections_created)
return true;
/* If this symbol is not defined in a regular file, then set
the symbol to the stub location. This is required to make
function pointers compare as equal between the normal
executable and the shared library. */
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
/* We need .stub section. */
s = bfd_get_section_by_name (dynobj,
MIPS_ELF_STUB_SECTION_NAME (dynobj));
BFD_ASSERT (s != NULL);
h->root.u.def.section = s;
h->root.u.def.value = s->_raw_size;
/* XXX Write this stub address somewhere. */
h->plt.offset = s->_raw_size;
/* Make room for this stub code. */
s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
/* The last half word of the stub will be filled with the index
of this symbol in .dynsym section. */
return true;
}
}
else if ((h->type == STT_FUNC)
&& (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
{
/* This will set the entry for this symbol in the GOT to 0, and
the dynamic linker will take care of this. */
h->root.u.def.value = 0;
return true;
}
/* 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->weakdef != NULL)
{
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|| h->weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->weakdef->root.u.def.section;
h->root.u.def.value = h->weakdef->root.u.def.value;
return true;
}
/* This is a reference to a symbol defined by a dynamic object which
is not a function. */
return true;
}
/* This function is called after all the input files have been read,
and the input sections have been assigned to output sections. We
check for any mips16 stub sections that we can discard. */
static boolean mips_elf_check_mips16_stubs
PARAMS ((struct mips_elf_link_hash_entry *, PTR));
boolean
_bfd_mips_elf_always_size_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
asection *ri;
/* The .reginfo section has a fixed size. */
ri = bfd_get_section_by_name (output_bfd, ".reginfo");
if (ri != NULL)
bfd_set_section_size (output_bfd, ri,
(bfd_size_type) sizeof (Elf32_External_RegInfo));
if (info->relocateable
|| ! mips_elf_hash_table (info)->mips16_stubs_seen)
return true;
mips_elf_link_hash_traverse (mips_elf_hash_table (info),
mips_elf_check_mips16_stubs,
(PTR) NULL);
return true;
}
/* Check the mips16 stubs for a particular symbol, and see if we can
discard them. */
static boolean
mips_elf_check_mips16_stubs (h, data)
struct mips_elf_link_hash_entry *h;
PTR data ATTRIBUTE_UNUSED;
{
if (h->fn_stub != NULL
&& ! h->need_fn_stub)
{
/* We don't need the fn_stub; the only references to this symbol
are 16 bit calls. Clobber the size to 0 to prevent it from
being included in the link. */
h->fn_stub->_raw_size = 0;
h->fn_stub->_cooked_size = 0;
h->fn_stub->flags &= ~SEC_RELOC;
h->fn_stub->reloc_count = 0;
h->fn_stub->flags |= SEC_EXCLUDE;
}
if (h->call_stub != NULL
&& h->root.other == STO_MIPS16)
{
/* We don't need the call_stub; this is a 16 bit function, so
calls from other 16 bit functions are OK. Clobber the size
to 0 to prevent it from being included in the link. */
h->call_stub->_raw_size = 0;
h->call_stub->_cooked_size = 0;
h->call_stub->flags &= ~SEC_RELOC;
h->call_stub->reloc_count = 0;
h->call_stub->flags |= SEC_EXCLUDE;
}
if (h->call_fp_stub != NULL
&& h->root.other == STO_MIPS16)
{
/* We don't need the call_stub; this is a 16 bit function, so
calls from other 16 bit functions are OK. Clobber the size
to 0 to prevent it from being included in the link. */
h->call_fp_stub->_raw_size = 0;
h->call_fp_stub->_cooked_size = 0;
h->call_fp_stub->flags &= ~SEC_RELOC;
h->call_fp_stub->reloc_count = 0;
h->call_fp_stub->flags |= SEC_EXCLUDE;
}
return true;
}
/* Set the sizes of the dynamic sections. */
boolean
_bfd_mips_elf_size_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *s;
boolean reltext;
struct mips_got_info *g = NULL;
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
s->_raw_size
= strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
s->contents
= (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
}
}
/* The check_relocs and adjust_dynamic_symbol entry points have
determined the sizes of the various dynamic sections. Allocate
memory for them. */
reltext = false;
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char *name;
boolean strip;
/* 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->flags & SEC_LINKER_CREATED) == 0)
continue;
strip = false;
if (strncmp (name, ".rel", 4) == 0)
{
if (s->_raw_size == 0)
{
/* We only strip the section if the output section name
has the same name. Otherwise, there might be several
input sections for this output section. FIXME: This
code is probably not needed these days anyhow, since
the linker now does not create empty output sections. */
if (s->output_section != NULL
&& strcmp (name,
bfd_get_section_name (s->output_section->owner,
s->output_section)) == 0)
strip = true;
}
else
{
const char *outname;
asection *target;
/* If this relocation section applies to a read only
section, then we probably need a DT_TEXTREL entry.
If the relocation section is .rel.dyn, we always
assert a DT_TEXTREL entry rather than testing whether
there exists a relocation to a read only section or
not. */
outname = bfd_get_section_name (output_bfd,
s->output_section);
target = bfd_get_section_by_name (output_bfd, outname + 4);
if ((target != NULL
&& (target->flags & SEC_READONLY) != 0
&& (target->flags & SEC_ALLOC) != 0)
|| strcmp (outname,
MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0)
reltext = true;
/* We use the reloc_count field as a counter if we need
to copy relocs into the output file. */
if (strcmp (name,
MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0)
s->reloc_count = 0;
}
}
else if (strncmp (name, ".got", 4) == 0)
{
int i;
bfd_size_type loadable_size = 0;
bfd_size_type local_gotno;
bfd *sub;
BFD_ASSERT (elf_section_data (s) != NULL);
g = (struct mips_got_info *) elf_section_data (s)->tdata;
BFD_ASSERT (g != NULL);
/* Calculate the total loadable size of the output. That
will give us the maximum number of GOT_PAGE entries
required. */
for (sub = info->input_bfds; sub; sub = sub->link_next)
{
asection *subsection;
for (subsection = sub->sections;
subsection;
subsection = subsection->next)
{
if ((subsection->flags & SEC_ALLOC) == 0)
continue;
loadable_size += ((subsection->_raw_size + 0xf)
&~ (bfd_size_type) 0xf);
}
}
loadable_size += MIPS_FUNCTION_STUB_SIZE;
/* Assume there are two loadable segments consisting of
contiguous sections. Is 5 enough? */
local_gotno = (loadable_size >> 16) + 5;
if (IRIX_COMPAT (output_bfd) == ict_irix6)
/* It's possible we will need GOT_PAGE entries as well as
GOT16 entries. Often, these will be able to share GOT
entries, but not always. */
local_gotno *= 2;
g->local_gotno += local_gotno;
s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
/* There has to be a global GOT entry for every symbol with
a dynamic symbol table index of DT_MIPS_GOTSYM or
higher. Therefore, it make sense to put those symbols
that need GOT entries at the end of the symbol table. We
do that here. */
if (!mips_elf_sort_hash_table (info, 1))
return false;
if (g->global_gotsym != NULL)
i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
else
/* If there are no global symbols, or none requiring
relocations, then GLOBAL_GOTSYM will be NULL. */
i = 0;
g->global_gotno = i;
s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
}
else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
{
/* Irix rld assumes that the function stub isn't at the end
of .text section. So put a dummy. XXX */
s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
}
else if (! info->shared
&& ! mips_elf_hash_table (info)->use_rld_obj_head
&& strncmp (name, ".rld_map", 8) == 0)
{
/* We add a room for __rld_map. It will be filled in by the
rtld to contain a pointer to the _r_debug structure. */
s->_raw_size += 4;
}
else if (SGI_COMPAT (output_bfd)
&& strncmp (name, ".compact_rel", 12) == 0)
s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))
== 0)
s->_raw_size = (sizeof (Elf32_External_Msym)
* (elf_hash_table (info)->dynsymcount
+ bfd_count_sections (output_bfd)));
else if (strncmp (name, ".init", 5) != 0)
{
/* It's not one of our sections, so don't allocate space. */
continue;
}
if (strip)
{
_bfd_strip_section_from_output (info, s);
continue;
}
/* Allocate memory for the section contents. */
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
}
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
values later, in elf_mips_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. */
if (! info->shared)
{
/* SGI object has the equivalence of DT_DEBUG in the
DT_MIPS_RLD_MAP entry. */
if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
return false;
if (!SGI_COMPAT (output_bfd))
{
if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
return false;
}
}
else
{
/* Shared libraries on traditional mips have DT_DEBUG. */
if (!SGI_COMPAT (output_bfd))
{
if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
return false;
}
}
if (reltext && SGI_COMPAT (output_bfd))
info->flags |= DF_TEXTREL;
if ((info->flags & DF_TEXTREL) != 0)
{
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
return false;
}
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
return false;
if (bfd_get_section_by_name (dynobj,
MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)))
{
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
return false;
}
if (SGI_COMPAT (output_bfd))
{
if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
return false;
}
if (SGI_COMPAT (output_bfd))
{
if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
return false;
}
if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
{
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
return false;
s = bfd_get_section_by_name (dynobj, ".liblist");
BFD_ASSERT (s != NULL);
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
return false;
}
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
return false;
#if 0
/* Time stamps in executable files are a bad idea. */
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
return false;
#endif
#if 0 /* FIXME */
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
return false;
#endif
#if 0 /* FIXME */
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
return false;
#endif
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
return false;
if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
return false;
if (IRIX_COMPAT (dynobj) == ict_irix5
&& ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
return false;
if (IRIX_COMPAT (dynobj) == ict_irix6
&& (bfd_get_section_by_name
(dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
&& !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
return false;
if (bfd_get_section_by_name (dynobj,
MIPS_ELF_MSYM_SECTION_NAME (dynobj))
&& !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
return false;
}
return true;
}
/* If NAME is one of the special IRIX6 symbols defined by the linker,
adjust it appropriately now. */
static void
mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
bfd *abfd ATTRIBUTE_UNUSED;
const char *name;
Elf_Internal_Sym *sym;
{
/* The linker script takes care of providing names and values for
these, but we must place them into the right sections. */
static const char* const text_section_symbols[] = {
"_ftext",
"_etext",
"__dso_displacement",
"__elf_header",
"__program_header_table",
NULL
};
static const char* const data_section_symbols[] = {
"_fdata",
"_edata",
"_end",
"_fbss",
NULL
};
const char* const *p;
int i;
for (i = 0; i < 2; ++i)
for (p = (i == 0) ? text_section_symbols : data_section_symbols;
*p;
++p)
if (strcmp (*p, name) == 0)
{
/* All of these symbols are given type STT_SECTION by the
IRIX6 linker. */
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
/* The IRIX linker puts these symbols in special sections. */
if (i == 0)
sym->st_shndx = SHN_MIPS_TEXT;
else
sym->st_shndx = SHN_MIPS_DATA;
break;
}
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
boolean
_bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd;
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
bfd *dynobj;
bfd_vma gval;
asection *sgot;
asection *smsym;
struct mips_got_info *g;
const char *name;
struct mips_elf_link_hash_entry *mh;
dynobj = elf_hash_table (info)->dynobj;
gval = sym->st_value;
mh = (struct mips_elf_link_hash_entry *) h;
if (h->plt.offset != (bfd_vma) -1)
{
asection *s;
bfd_byte *p;
bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
/* This symbol has a stub. Set it up. */
BFD_ASSERT (h->dynindx != -1);
s = bfd_get_section_by_name (dynobj,
MIPS_ELF_STUB_SECTION_NAME (dynobj));
BFD_ASSERT (s != NULL);
/* Fill the stub. */
p = stub;
bfd_put_32 (output_bfd, (bfd_vma) STUB_LW (output_bfd), p);
p += 4;
bfd_put_32 (output_bfd, (bfd_vma) STUB_MOVE (output_bfd), p);
p += 4;
/* FIXME: Can h->dynindex be more than 64K? */
if (h->dynindx & 0xffff0000)
return false;
bfd_put_32 (output_bfd, (bfd_vma) STUB_JALR, p);
p += 4;
bfd_put_32 (output_bfd, (bfd_vma) STUB_LI16 (output_bfd) + h->dynindx, p);
BFD_ASSERT (h->plt.offset <= s->_raw_size);
memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
/* Mark the symbol as undefined. plt.offset != -1 occurs
only for the referenced symbol. */
sym->st_shndx = SHN_UNDEF;
/* The run-time linker uses the st_value field of the symbol
to reset the global offset table entry for this external
to its stub address when unlinking a shared object. */
gval = s->output_section->vma + s->output_offset + h->plt.offset;
sym->st_value = gval;
}
BFD_ASSERT (h->dynindx != -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
sgot = mips_elf_got_section (dynobj);
BFD_ASSERT (sgot != NULL);
BFD_ASSERT (elf_section_data (sgot) != NULL);
g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
BFD_ASSERT (g != NULL);
/* Run through the global symbol table, creating GOT entries for all
the symbols that need them. */
if (g->global_gotsym != NULL
&& h->dynindx >= g->global_gotsym->dynindx)
{
bfd_vma offset;
bfd_vma value;
if (sym->st_value)
value = sym->st_value;
else
{
/* For an entity defined in a shared object, this will be
NULL. (For functions in shared objects for
which we have created stubs, ST_VALUE will be non-NULL.
That's because such the functions are now no longer defined
in a shared object.) */
if (info->shared && h->root.type == bfd_link_hash_undefined)
value = 0;
else
value = h->root.u.def.value;
}
offset = mips_elf_global_got_index (dynobj, h);
MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
}
/* Create a .msym entry, if appropriate. */
smsym = bfd_get_section_by_name (dynobj,
MIPS_ELF_MSYM_SECTION_NAME (dynobj));
if (smsym)
{
Elf32_Internal_Msym msym;
msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
/* It is undocumented what the `1' indicates, but IRIX6 uses
this value. */
msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
bfd_mips_elf_swap_msym_out
(dynobj, &msym,
((Elf32_External_Msym *) smsym->contents) + h->dynindx);
}
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
name = h->root.root.string;
if (strcmp (name, "_DYNAMIC") == 0
|| strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
sym->st_shndx = SHN_ABS;
else if (strcmp (name, "_DYNAMIC_LINK") == 0
|| strcmp (name, "_DYNAMIC_LINKING") == 0)
{
sym->st_shndx = SHN_ABS;
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
sym->st_value = 1;
}
else if (strcmp (name, "_gp_disp") == 0)
{
sym->st_shndx = SHN_ABS;
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
sym->st_value = elf_gp (output_bfd);
}
else if (SGI_COMPAT (output_bfd))
{
if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
|| strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
{
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
sym->st_other = STO_PROTECTED;
sym->st_value = 0;
sym->st_shndx = SHN_MIPS_DATA;
}
else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
{
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
sym->st_other = STO_PROTECTED;
sym->st_value = mips_elf_hash_table (info)->procedure_count;
sym->st_shndx = SHN_ABS;
}
else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
{
if (h->type == STT_FUNC)
sym->st_shndx = SHN_MIPS_TEXT;
else if (h->type == STT_OBJECT)
sym->st_shndx = SHN_MIPS_DATA;
}
}
/* Handle the IRIX6-specific symbols. */
if (IRIX_COMPAT (output_bfd) == ict_irix6)
mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
if (! info->shared)
{
if (! mips_elf_hash_table (info)->use_rld_obj_head
&& (strcmp (name, "__rld_map") == 0
|| strcmp (name, "__RLD_MAP") == 0))
{
asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
BFD_ASSERT (s != NULL);
sym->st_value = s->output_section->vma + s->output_offset;
bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
if (mips_elf_hash_table (info)->rld_value == 0)
mips_elf_hash_table (info)->rld_value = sym->st_value;
}
else if (mips_elf_hash_table (info)->use_rld_obj_head
&& strcmp (name, "__rld_obj_head") == 0)
{
/* IRIX6 does not use a .rld_map section. */
if (IRIX_COMPAT (output_bfd) == ict_irix5
|| IRIX_COMPAT (output_bfd) == ict_none)
BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
!= NULL);
mips_elf_hash_table (info)->rld_value = sym->st_value;
}
}
/* If this is a mips16 symbol, force the value to be even. */
if (sym->st_other == STO_MIPS16
&& (sym->st_value & 1) != 0)
--sym->st_value;
return true;
}
/* Finish up the dynamic sections. */
boolean
_bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *sdyn;
asection *sgot;
struct mips_got_info *g;
dynobj = elf_hash_table (info)->dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
sgot = mips_elf_got_section (dynobj);
if (sgot == NULL)
g = NULL;
else
{
BFD_ASSERT (elf_section_data (sgot) != NULL);
g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
BFD_ASSERT (g != NULL);
}
if (elf_hash_table (info)->dynamic_sections_created)
{
bfd_byte *b;
BFD_ASSERT (sdyn != NULL);
BFD_ASSERT (g != NULL);
for (b = sdyn->contents;
b < sdyn->contents + sdyn->_raw_size;
b += MIPS_ELF_DYN_SIZE (dynobj))
{
Elf_Internal_Dyn dyn;
const char *name;
size_t elemsize;
asection *s;
boolean swap_out_p;
/* Read in the current dynamic entry. */
(*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
/* Assume that we're going to modify it and write it out. */
swap_out_p = true;
switch (dyn.d_tag)
{
case DT_RELENT:
s = (bfd_get_section_by_name
(dynobj,
MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)));
BFD_ASSERT (s != NULL);
dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
break;
case DT_STRSZ:
/* Rewrite DT_STRSZ. */
dyn.d_un.d_val =
_bfd_stringtab_size (elf_hash_table (info)->dynstr);
break;
case DT_PLTGOT:
name = ".got";
goto get_vma;
case DT_MIPS_CONFLICT:
name = ".conflict";
goto get_vma;
case DT_MIPS_LIBLIST:
name = ".liblist";
get_vma:
s = bfd_get_section_by_name (output_bfd, name);
BFD_ASSERT (s != NULL);
dyn.d_un.d_ptr = s->vma;
break;
case DT_MIPS_RLD_VERSION:
dyn.d_un.d_val = 1; /* XXX */
break;
case DT_MIPS_FLAGS:
dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
break;
case DT_MIPS_CONFLICTNO:
name = ".conflict";
elemsize = sizeof (Elf32_Conflict);
goto set_elemno;
case DT_MIPS_LIBLISTNO:
name = ".liblist";
elemsize = sizeof (Elf32_Lib);
set_elemno:
s = bfd_get_section_by_name (output_bfd, name);
if (s != NULL)
{
if (s->_cooked_size != 0)
dyn.d_un.d_val = s->_cooked_size / elemsize;
else
dyn.d_un.d_val = s->_raw_size / elemsize;
}
else
dyn.d_un.d_val = 0;
break;
case DT_MIPS_TIME_STAMP:
time ((time_t *) &dyn.d_un.d_val);
break;
case DT_MIPS_ICHECKSUM:
/* XXX FIXME: */
swap_out_p = false;
break;
case DT_MIPS_IVERSION:
/* XXX FIXME: */
swap_out_p = false;
break;
case DT_MIPS_BASE_ADDRESS:
s = output_bfd->sections;
BFD_ASSERT (s != NULL);
dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff;
break;
case DT_MIPS_LOCAL_GOTNO:
dyn.d_un.d_val = g->local_gotno;
break;
case DT_MIPS_UNREFEXTNO:
/* The index into the dynamic symbol table which is the
entry of the first external symbol that is not
referenced within the same object. */
dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
break;
case DT_MIPS_GOTSYM:
if (g->global_gotsym)
{
dyn.d_un.d_val = g->global_gotsym->dynindx;
break;
}
/* In case if we don't have global got symbols we default
to setting DT_MIPS_GOTSYM to the same value as
DT_MIPS_SYMTABNO, so we just fall through. */
case DT_MIPS_SYMTABNO:
name = ".dynsym";
elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
s = bfd_get_section_by_name (output_bfd, name);
BFD_ASSERT (s != NULL);
if (s->_cooked_size != 0)
dyn.d_un.d_val = s->_cooked_size / elemsize;
else
dyn.d_un.d_val = s->_raw_size / elemsize;
break;
case DT_MIPS_HIPAGENO:
dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
break;
case DT_MIPS_RLD_MAP:
dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
break;
case DT_MIPS_OPTIONS:
s = (bfd_get_section_by_name
(output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
dyn.d_un.d_ptr = s->vma;
break;
case DT_MIPS_MSYM:
s = (bfd_get_section_by_name
(output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)));
dyn.d_un.d_ptr = s->vma;
break;
default:
swap_out_p = false;
break;
}
if (swap_out_p)
(*get_elf_backend_data (dynobj)->s->swap_dyn_out)
(dynobj, &dyn, b);
}
}
/* The first entry of the global offset table will be filled at
runtime. The second entry will be used by some runtime loaders.
This isn't the case of Irix rld. */
if (sgot != NULL && sgot->_raw_size > 0)
{
MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
}
if (sgot != NULL)
elf_section_data (sgot->output_section)->this_hdr.sh_entsize
= MIPS_ELF_GOT_SIZE (output_bfd);
{
asection *smsym;
asection *s;
Elf32_compact_rel cpt;
/* ??? The section symbols for the output sections were set up in
_bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
symbols. Should we do so? */
smsym = bfd_get_section_by_name (dynobj,
MIPS_ELF_MSYM_SECTION_NAME (dynobj));
if (smsym != NULL)
{
Elf32_Internal_Msym msym;
msym.ms_hash_value = 0;
msym.ms_info = ELF32_MS_INFO (0, 1);
for (s = output_bfd->sections; s != NULL; s = s->next)
{
long dynindx = elf_section_data (s)->dynindx;
bfd_mips_elf_swap_msym_out
(output_bfd, &msym,
(((Elf32_External_Msym *) smsym->contents)
+ dynindx));
}
}
if (SGI_COMPAT (output_bfd))
{
/* Write .compact_rel section out. */
s = bfd_get_section_by_name (dynobj, ".compact_rel");
if (s != NULL)
{
cpt.id1 = 1;
cpt.num = s->reloc_count;
cpt.id2 = 2;
cpt.offset = (s->output_section->filepos
+ sizeof (Elf32_External_compact_rel));
cpt.reserved0 = 0;
cpt.reserved1 = 0;
bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
((Elf32_External_compact_rel *)
s->contents));
/* Clean up a dummy stub function entry in .text. */
s = bfd_get_section_by_name (dynobj,
MIPS_ELF_STUB_SECTION_NAME (dynobj));
if (s != NULL)
{
file_ptr dummy_offset;
BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
memset (s->contents + dummy_offset, 0,
MIPS_FUNCTION_STUB_SIZE);
}
}
}
/* We need to sort the entries of the dynamic relocation section. */
if (!ABI_64_P (output_bfd))
{
asection *reldyn;
reldyn = bfd_get_section_by_name (dynobj,
MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
if (reldyn != NULL && reldyn->reloc_count > 2)
{
reldyn_sorting_bfd = output_bfd;
qsort ((Elf32_External_Rel *) reldyn->contents + 1,
(size_t) reldyn->reloc_count - 1,
sizeof (Elf32_External_Rel), sort_dynamic_relocs);
}
}
/* Clean up a first relocation in .rel.dyn. */
s = bfd_get_section_by_name (dynobj,
MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
if (s != NULL && s->_raw_size > 0)
memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
}
return true;
}
/* Support for core dump NOTE sections */
static boolean
_bfd_elf32_mips_grok_prstatus (abfd, note)
bfd *abfd;
Elf_Internal_Note *note;
{
int offset;
unsigned int raw_size;
switch (note->descsz)
{
default:
return false;
case 256: /* Linux/MIPS */
/* pr_cursig */
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
raw_size = 180;
break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
raw_size, note->descpos + offset);
}
static boolean
_bfd_elf32_mips_grok_psinfo (abfd, note)
bfd *abfd;
Elf_Internal_Note *note;
{
switch (note->descsz)
{
default:
return false;
case 128: /* Linux/MIPS elf_prpsinfo */
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
elf_tdata (abfd)->core_command
= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
}
/* Note that for some reason, a spurious space is tacked
onto the end of the args in some (at least one anyway)
implementations, so strip it off if it exists. */
{
char *command = elf_tdata (abfd)->core_command;
int n = strlen (command);
if (0 < n && command[n - 1] == ' ')
command[n - 1] = '\0';
}
return true;
}
/* This is almost identical to bfd_generic_get_... except that some
MIPS relocations need to be handled specially. Sigh. */
static bfd_byte *
elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data,
relocateable, symbols)
bfd *abfd;
struct bfd_link_info *link_info;
struct bfd_link_order *link_order;
bfd_byte *data;
boolean relocateable;
asymbol **symbols;
{
/* Get enough memory to hold the stuff */
bfd *input_bfd = link_order->u.indirect.section->owner;
asection *input_section = link_order->u.indirect.section;
long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
arelent **reloc_vector = NULL;
long reloc_count;
if (reloc_size < 0)
goto error_return;
reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
if (reloc_vector == NULL && reloc_size != 0)
goto error_return;
/* read in the section */
if (!bfd_get_section_contents (input_bfd,
input_section,
(PTR) data,
(file_ptr) 0,
input_section->_raw_size))
goto error_return;
/* We're not relaxing the section, so just copy the size info */
input_section->_cooked_size = input_section->_raw_size;
input_section->reloc_done = true;
reloc_count = bfd_canonicalize_reloc (input_bfd,
input_section,
reloc_vector,
symbols);
if (reloc_count < 0)
goto error_return;
if (reloc_count > 0)
{
arelent **parent;
/* for mips */
int gp_found;
bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
{
struct bfd_hash_entry *h;
struct bfd_link_hash_entry *lh;
/* Skip all this stuff if we aren't mixing formats. */
if (abfd && input_bfd
&& abfd->xvec == input_bfd->xvec)
lh = 0;
else
{
h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false);
lh = (struct bfd_link_hash_entry *) h;
}
lookup:
if (lh)
{
switch (lh->type)
{
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
case bfd_link_hash_common:
gp_found = 0;
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
gp_found = 1;
gp = lh->u.def.value;
break;
case bfd_link_hash_indirect:
case bfd_link_hash_warning:
lh = lh->u.i.link;
/* @@FIXME ignoring warning for now */
goto lookup;
case bfd_link_hash_new:
default:
abort ();
}
}
else
gp_found = 0;
}
/* end mips */
for (parent = reloc_vector; *parent != (arelent *) NULL;
parent++)
{
char *error_message = (char *) NULL;
bfd_reloc_status_type r;
/* Specific to MIPS: Deal with relocation types that require
knowing the gp of the output bfd. */
asymbol *sym = *(*parent)->sym_ptr_ptr;
if (bfd_is_abs_section (sym->section) && abfd)
{
/* The special_function wouldn't get called anyways. */
}
else if (!gp_found)
{
/* The gp isn't there; let the special function code
fall over on its own. */
}
else if ((*parent)->howto->special_function
== _bfd_mips_elf_gprel16_reloc)
{
/* bypass special_function call */
r = gprel16_with_gp (input_bfd, sym, *parent, input_section,
relocateable, (PTR) data, gp);
goto skip_bfd_perform_relocation;
}
/* end mips specific stuff */
r = bfd_perform_relocation (input_bfd,
*parent,
(PTR) data,
input_section,
relocateable ? abfd : (bfd *) NULL,
&error_message);
skip_bfd_perform_relocation:
if (relocateable)
{
asection *os = input_section->output_section;
/* A partial link, so keep the relocs */
os->orelocation[os->reloc_count] = *parent;
os->reloc_count++;
}
if (r != bfd_reloc_ok)
{
switch (r)
{
case bfd_reloc_undefined:
if (!((*link_info->callbacks->undefined_symbol)
(link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
input_bfd, input_section, (*parent)->address,
true)))
goto error_return;
break;
case bfd_reloc_dangerous:
BFD_ASSERT (error_message != (char *) NULL);
if (!((*link_info->callbacks->reloc_dangerous)
(link_info, error_message, input_bfd, input_section,
(*parent)->address)))
goto error_return;
break;
case bfd_reloc_overflow:
if (!((*link_info->callbacks->reloc_overflow)
(link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
(*parent)->howto->name, (*parent)->addend,
input_bfd, input_section, (*parent)->address)))
goto error_return;
break;
case bfd_reloc_outofrange:
default:
abort ();
break;
}
}
}
}
if (reloc_vector != NULL)
free (reloc_vector);
return data;
error_return:
if (reloc_vector != NULL)
free (reloc_vector);
return NULL;
}
#define bfd_elf32_bfd_get_relocated_section_contents \
elf32_mips_get_relocated_section_contents
/* ECOFF swapping routines. These are used when dealing with the
.mdebug section, which is in the ECOFF debugging format. */
static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
/* Symbol table magic number. */
magicSym,
/* Alignment of debugging information. E.g., 4. */
4,
/* Sizes of external symbolic information. */
sizeof (struct hdr_ext),
sizeof (struct dnr_ext),
sizeof (struct pdr_ext),
sizeof (struct sym_ext),
sizeof (struct opt_ext),
sizeof (struct fdr_ext),
sizeof (struct rfd_ext),
sizeof (struct ext_ext),
/* Functions to swap in external symbolic data. */
ecoff_swap_hdr_in,
ecoff_swap_dnr_in,
ecoff_swap_pdr_in,
ecoff_swap_sym_in,
ecoff_swap_opt_in,
ecoff_swap_fdr_in,
ecoff_swap_rfd_in,
ecoff_swap_ext_in,
_bfd_ecoff_swap_tir_in,
_bfd_ecoff_swap_rndx_in,
/* Functions to swap out external symbolic data. */
ecoff_swap_hdr_out,
ecoff_swap_dnr_out,
ecoff_swap_pdr_out,
ecoff_swap_sym_out,
ecoff_swap_opt_out,
ecoff_swap_fdr_out,
ecoff_swap_rfd_out,
ecoff_swap_ext_out,
_bfd_ecoff_swap_tir_out,
_bfd_ecoff_swap_rndx_out,
/* Function to read in symbolic data. */
_bfd_mips_elf_read_ecoff_info
};
#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
#define TARGET_LITTLE_NAME "elf32-littlemips"
#define TARGET_BIG_SYM bfd_elf32_bigmips_vec
#define TARGET_BIG_NAME "elf32-bigmips"
#define ELF_ARCH bfd_arch_mips
#define ELF_MACHINE_CODE EM_MIPS
/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
a value of 0x1000, and we are compatible. */
#define ELF_MAXPAGESIZE 0x1000
#define elf_backend_collect true
#define elf_backend_type_change_ok true
#define elf_backend_can_gc_sections true
#define elf_backend_sign_extend_vma true
#define elf_info_to_howto mips_info_to_howto_rela
#define elf_info_to_howto_rel mips_info_to_howto_rel
#define elf_backend_sym_is_global mips_elf_sym_is_global
#define elf_backend_object_p _bfd_mips_elf_object_p
#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
#define elf_backend_section_from_bfd_section \
_bfd_mips_elf_section_from_bfd_section
#define elf_backend_section_processing _bfd_mips_elf_section_processing
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
#define elf_backend_additional_program_headers \
_bfd_mips_elf_additional_program_headers
#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
#define elf_backend_final_write_processing \
_bfd_mips_elf_final_write_processing
#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
#define elf_backend_create_dynamic_sections \
_bfd_mips_elf_create_dynamic_sections
#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
#define elf_backend_adjust_dynamic_symbol \
_bfd_mips_elf_adjust_dynamic_symbol
#define elf_backend_always_size_sections \
_bfd_mips_elf_always_size_sections
#define elf_backend_size_dynamic_sections \
_bfd_mips_elf_size_dynamic_sections
#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
#define elf_backend_link_output_symbol_hook \
_bfd_mips_elf_link_output_symbol_hook
#define elf_backend_finish_dynamic_symbol \
_bfd_mips_elf_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections \
_bfd_mips_elf_finish_dynamic_sections
#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
#define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO)
#define elf_backend_plt_header_size 0
#define elf_backend_copy_indirect_symbol \
_bfd_mips_elf_copy_indirect_symbol
#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
#define elf_backend_grok_prstatus _bfd_elf32_mips_grok_prstatus
#define elf_backend_grok_psinfo _bfd_elf32_mips_grok_psinfo
#define bfd_elf32_bfd_is_local_label_name \
mips_elf_is_local_label_name
#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
#define bfd_elf32_bfd_link_hash_table_create \
_bfd_mips_elf_link_hash_table_create
#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
#define bfd_elf32_bfd_copy_private_bfd_data \
_bfd_mips_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_mips_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
_bfd_mips_elf_print_private_bfd_data
#include "elf32-target.h"
/* Support for traditional mips targets */
#define INCLUDED_TARGET_FILE /* More a type of flag */
#undef TARGET_LITTLE_SYM
#undef TARGET_LITTLE_NAME
#undef TARGET_BIG_SYM
#undef TARGET_BIG_NAME
#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
#define TARGET_BIG_NAME "elf32-tradbigmips"
/* Include the target file again for this target */
#include "elf32-target.h"
|