aboutsummaryrefslogtreecommitdiff
path: root/bfd/elf32-h8300.c
blob: 5ca695520a99deb1faf24253fb43b878fec4f566 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
/* Generic support for 32-bit ELF
   Copyright 1993, 1995, 1998, 1999, 2001 Free Software Foundation, Inc.

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

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

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/h8.h"

static reloc_howto_type *elf32_h8_reloc_type_lookup
  PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void elf32_h8_info_to_howto
  PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static void elf32_h8_info_to_howto_rel
  PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
static unsigned long elf32_h8_mach
  PARAMS ((flagword));
static void elf32_h8_final_write_processing
  PARAMS ((bfd *, boolean));
static boolean elf32_h8_object_p
  PARAMS ((bfd *));
static boolean elf32_h8_merge_private_bfd_data
  PARAMS ((bfd *, bfd *));
static boolean elf32_h8_relax_section
  PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
static boolean elf32_h8_relax_delete_bytes
  PARAMS ((bfd *, asection *, bfd_vma, int));
static boolean elf32_h8_symbol_address_p
  PARAMS ((bfd *, asection *, Elf32_External_Sym *, bfd_vma));
static bfd_byte *elf32_h8_get_relocated_section_contents
  PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
	   bfd_byte *, boolean, asymbol **));
static bfd_reloc_status_type elf32_h8_final_link_relocate
  PARAMS ((unsigned long, bfd *, bfd *, asection *,
	   bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
	   struct bfd_link_info *, asection *, int));
static boolean elf32_h8_relocate_section
  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
	   bfd_byte *, Elf_Internal_Rela *,
	   Elf_Internal_Sym *, asection **));
static bfd_reloc_status_type special
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));

/* This does not include any relocation information, but should be
   good enough for GDB or objdump to read the file.  */

static reloc_howto_type h8_elf_howto_table[] =
{
#define R_H8_NONE_X 0
  HOWTO (R_H8_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 */
	 special,			/* special_function */
	 "R_H8_NONE",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR32_X (R_H8_NONE_X + 1)
  HOWTO (R_H8_DIR32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR32",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR16_X (R_H8_DIR32_X + 1)
  HOWTO (R_H8_DIR16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR16",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR8_X (R_H8_DIR16_X + 1)
  HOWTO (R_H8_DIR8,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR16",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0x000000ff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR16A8_X (R_H8_DIR8_X + 1)
  HOWTO (R_H8_DIR16A8,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR16A8",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR16R8_X (R_H8_DIR16A8_X + 1)
  HOWTO (R_H8_DIR16R8,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR16R8",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR24A8_X (R_H8_DIR16R8_X + 1)
  HOWTO (R_H8_DIR24A8,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 24,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR24A8",	/* name */
	 true,			/* partial_inplace */
	 0xff000000,		/* src_mask */
	 0x00ffffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR24R8_X (R_H8_DIR24A8_X + 1)
  HOWTO (R_H8_DIR24R8,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 24,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR24R8",	/* name */
	 true,			/* partial_inplace */
	 0xff000000,		/* src_mask */
	 0x00ffffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_DIR32A16_X (R_H8_DIR24R8_X + 1)
  HOWTO (R_H8_DIR32A16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_DIR32",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */
#define R_H8_PCREL16_X (R_H8_DIR32A16_X + 1)
  HOWTO (R_H8_PCREL16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 true,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_PCREL16",	/* name */
	 false,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 true),			/* pcrel_offset */
#define R_H8_PCREL8_X (R_H8_PCREL16_X + 1)
  HOWTO (R_H8_PCREL8,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 true,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 special,			/* special_function */
	 "R_H8_PCREL8",		/* name */
	 false,			/* partial_inplace */
	 0xff,			/* src_mask */
	 0xff,			/* dst_mask */
	 true),			/* pcrel_offset */
};

/* This structure is used to map BFD reloc codes to H8 ELF relocs.  */

struct elf_reloc_map
{
  bfd_reloc_code_real_type bfd_reloc_val;
  unsigned char howto_index;
};

/* An array mapping BFD reloc codes to SH ELF relocs.  */

static const struct elf_reloc_map h8_reloc_map[] =
{
  { BFD_RELOC_NONE, R_H8_NONE_X },
  { BFD_RELOC_32, R_H8_DIR32_X },
  { BFD_RELOC_16, R_H8_DIR16_X },
  { BFD_RELOC_8, R_H8_DIR8_X },
  { BFD_RELOC_H8_DIR16A8, R_H8_DIR16A8_X },
  { BFD_RELOC_H8_DIR16R8, R_H8_DIR16R8_X },
  { BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X },
  { BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X },
  { BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X },
  { BFD_RELOC_16_PCREL, R_H8_PCREL16_X },
  { BFD_RELOC_8_PCREL, R_H8_PCREL8_X },
};


static reloc_howto_type *
elf32_h8_reloc_type_lookup (abfd, code)
     bfd *abfd ATTRIBUTE_UNUSED;
     bfd_reloc_code_real_type code;
{
  unsigned int i;

  for (i = 0; i < sizeof (h8_reloc_map) / sizeof (struct elf_reloc_map); i++)
    {
      if (h8_reloc_map[i].bfd_reloc_val == code)
	return &h8_elf_howto_table[(int) h8_reloc_map[i].howto_index];
    }
  return NULL;
}

static void
elf32_h8_info_to_howto (abfd, bfd_reloc, elf_reloc)
     bfd *abfd ATTRIBUTE_UNUSED;
     arelent *bfd_reloc;
     Elf32_Internal_Rela *elf_reloc;
{
  unsigned int r;
  unsigned int i;

  r = ELF32_R_TYPE (elf_reloc->r_info);
  for (i = 0; i < sizeof (h8_elf_howto_table) / sizeof (reloc_howto_type); i++)
    if (h8_elf_howto_table[i].type== r)
      {
	bfd_reloc->howto = &h8_elf_howto_table[i];
	return;
      }
  abort ();
}

static void
elf32_h8_info_to_howto_rel (abfd, bfd_reloc, elf_reloc)
     bfd *abfd ATTRIBUTE_UNUSED;
     arelent *bfd_reloc;
     Elf32_Internal_Rel *elf_reloc ATTRIBUTE_UNUSED;
{
  unsigned int r;

  abort ();
  r = ELF32_R_TYPE (elf_reloc->r_info);
  bfd_reloc->howto = &h8_elf_howto_table[r];
}

/* Special handling for H8/300 relocs.
   We only come here for pcrel stuff and return normally if not an -r link.
   When doing -r, we can't do any arithmetic for the pcrel stuff, because
   we support relaxing on the H8/300 series chips.  */
static bfd_reloc_status_type
special (abfd, reloc_entry, symbol, data, input_section, output_bfd,
	 error_message)
     bfd *abfd ATTRIBUTE_UNUSED;
     arelent *reloc_entry ATTRIBUTE_UNUSED;
     asymbol *symbol ATTRIBUTE_UNUSED;
     PTR data ATTRIBUTE_UNUSED;
     asection *input_section ATTRIBUTE_UNUSED;
     bfd *output_bfd;
     char **error_message ATTRIBUTE_UNUSED;
{
  if (output_bfd == (bfd *) NULL)
    return bfd_reloc_continue;

  /* Adjust the reloc address to that in the output section.  */
  reloc_entry->address += input_section->output_offset;
  return bfd_reloc_ok;
}

/* Perform a relocation as part of a final link.  */
static bfd_reloc_status_type
elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
			      input_section, contents, offset, value,
			      addend, info, sym_sec, is_local)
     unsigned long r_type;
     bfd *input_bfd;
     bfd *output_bfd ATTRIBUTE_UNUSED;
     asection *input_section ATTRIBUTE_UNUSED;
     bfd_byte *contents;
     bfd_vma offset;
     bfd_vma value;
     bfd_vma addend;
     struct bfd_link_info *info ATTRIBUTE_UNUSED;
     asection *sym_sec ATTRIBUTE_UNUSED;
     int is_local ATTRIBUTE_UNUSED;
{
  bfd_byte *hit_data = contents + offset;

  switch (r_type)
    {

    case R_H8_NONE:
      return bfd_reloc_ok;

    case R_H8_DIR32:
    case R_H8_DIR32A16:
    case R_H8_DIR24A8:
      value += addend;
      bfd_put_32 (input_bfd, value, hit_data);
      return bfd_reloc_ok;

    case R_H8_DIR16:
    case R_H8_DIR16A8:
    case R_H8_DIR16R8:
      value += addend;
      bfd_put_16 (input_bfd, value, hit_data);
      return bfd_reloc_ok;

    /* AKA R_RELBYTE */
    case R_H8_DIR8:
      value += addend;

      bfd_put_8 (input_bfd, value, hit_data);
      return bfd_reloc_ok;

    case R_H8_DIR24R8:
      value += addend;

      /* HIT_DATA is the address for the first byte for the relocated
	 value.  Subtract 1 so that we can manipulate the data in 32bit
	 hunks.  */
      hit_data--;

      /* Clear out the top byte in value.  */
      value &= 0xffffff;

      /* Retrieve the type byte for value from the section contents.  */
      value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);

      /* Now scribble it out in one 32bit hunk.  */
      bfd_put_32 (input_bfd, value, hit_data);
      return bfd_reloc_ok;

    case R_H8_PCREL16:
      value -= (input_section->output_section->vma
		+ input_section->output_offset);
      value -= offset;
      value += addend;

      /* The value is relative to the start of the instruction,
	 not the relocation offset.  Subtract 2 to account for
	 this minor issue.  */
      value -= 2;

      bfd_put_16 (input_bfd, value, hit_data);
      return bfd_reloc_ok;

    case R_H8_PCREL8:
      value -= (input_section->output_section->vma
		+ input_section->output_offset);
      value -= offset;
      value += addend;

      /* The value is relative to the start of the instruction,
	 not the relocation offset.  Subtract 1 to account for
	 this minor issue.  */
      value -= 1;

      bfd_put_8 (input_bfd, value, hit_data);
      return bfd_reloc_ok;

    default:
      return bfd_reloc_notsupported;
    }
}

/* Relocate an H8 ELF section.  */
static boolean
elf32_h8_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_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  Elf_Internal_Rela *rel, *relend;

  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (input_bfd);

  rel = relocs;
  relend = relocs + input_section->reloc_count;
  for (; rel < relend; rel++)
    {
      unsigned int r_type;
      unsigned long r_symndx;
      Elf_Internal_Sym *sym;
      asection *sec;
      struct elf_link_hash_entry *h;
      bfd_vma relocation;
      bfd_reloc_status_type r;

      r_symndx = ELF32_R_SYM (rel->r_info);
      r_type = ELF32_R_TYPE (rel->r_info);

      if (info->relocateable)
	{
	  /* This is a relocateable link.  We don't have to change
             anything, unless the reloc is against a section symbol,
             in which case we have to adjust according to where the
             section symbol winds up in the output section.  */
	  if (r_symndx < symtab_hdr->sh_info)
	    {
	      sym = local_syms + r_symndx;
	      if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
		{
		  sec = local_sections[r_symndx];
		  rel->r_addend += sec->output_offset + sym->st_value;
		}
	    }

	  continue;
	}

      /* This is a final link.  */
      h = NULL;
      sym = NULL;
      sec = NULL;
      if (r_symndx < symtab_hdr->sh_info)
	{
	  sym = local_syms + r_symndx;
	  sec = local_sections[r_symndx];
	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
	}
      else
	{
	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
	  while (h->root.type == bfd_link_hash_indirect
		 || h->root.type == bfd_link_hash_warning)
	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
	  if (h->root.type == bfd_link_hash_defined
	      || h->root.type == bfd_link_hash_defweak)
	    {
	      sec = h->root.u.def.section;
	      relocation = (h->root.u.def.value
			    + sec->output_section->vma
			    + sec->output_offset);
	    }
	  else if (h->root.type == bfd_link_hash_undefweak)
	    relocation = 0;
	  else
	    {
	      if (! ((*info->callbacks->undefined_symbol)
		     (info, h->root.root.string, input_bfd,
		      input_section, rel->r_offset, true)))
		return false;
	      relocation = 0;
	    }
	}

      r = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
					input_section,
					contents, rel->r_offset,
					relocation, rel->r_addend,
					info, sec, h == NULL);

      if (r != bfd_reloc_ok)
	{
	  const char *name;
	  const char *msg = (const char *) 0;
	  arelent bfd_reloc;
	  reloc_howto_type *howto;

	  elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel);
	  howto = bfd_reloc.howto;

	  if (h != NULL)
	    name = h->root.root.string;
	  else
	    {
	      name = (bfd_elf_string_from_elf_section
		      (input_bfd, symtab_hdr->sh_link, sym->st_name));
	      if (name == NULL || *name == '\0')
		name = bfd_section_name (input_bfd, sec);
	    }

	  switch (r)
	    {
	    case bfd_reloc_overflow:
	      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_undefined:
	      if (! ((*info->callbacks->undefined_symbol)
		     (info, name, input_bfd, input_section,
		      rel->r_offset, true)))
		return false;
	      break;

	    case bfd_reloc_outofrange:
	      msg = _("internal error: out of range error");
	      goto common_error;

	    case bfd_reloc_notsupported:
	      msg = _("internal error: unsupported relocation error");
	      goto common_error;

	    case bfd_reloc_dangerous:
	      msg = _("internal error: dangerous error");
	      goto common_error;

	    default:
	      msg = _("internal error: unknown error");
	      /* fall through */

	    common_error:
	      if (!((*info->callbacks->warning)
		    (info, msg, name, input_bfd, input_section,
		     rel->r_offset)))
		return false;
	      break;
	    }
	}
    }

  return true;
}

/* Object files encode the specific H8 model they were compiled
   for in the ELF flags field.

   Examine that field and return the proper BFD machine type for
   the object file.  */
static unsigned long
elf32_h8_mach (flags)
     flagword flags;
{
  switch (flags & EF_H8_MACH)
    {
    case E_H8_MACH_H8300:
    default:
      return bfd_mach_h8300;

    case E_H8_MACH_H8300H:
      return bfd_mach_h8300h;

    case E_H8_MACH_H8300S:
      return bfd_mach_h8300s;
    }
}

/* The final processing done just before writing out a H8 ELF object
   file.  We use this opportunity to encode the BFD machine type
   into the flags field in the object file.  */

static void
elf32_h8_final_write_processing (abfd, linker)
     bfd *abfd;
     boolean linker ATTRIBUTE_UNUSED;
{
  unsigned long val;

  switch (bfd_get_mach (abfd))
    {
    default:
    case bfd_mach_h8300:
      val = E_H8_MACH_H8300;
      break;

    case bfd_mach_h8300h:
      val = E_H8_MACH_H8300H;
      break;

    case bfd_mach_h8300s:
      val = E_H8_MACH_H8300S;
      break;
    }

  elf_elfheader (abfd)->e_flags &= ~ (EF_H8_MACH);
  elf_elfheader (abfd)->e_flags |= val;
}

/* Return nonzero if ABFD represents a valid H8 ELF object file; also
   record the encoded machine type found in the ELF flags.  */

static boolean
elf32_h8_object_p (abfd)
     bfd *abfd;
{
  bfd_default_set_arch_mach (abfd, bfd_arch_h8300,
			     elf32_h8_mach (elf_elfheader (abfd)->e_flags));
  return true;
}

/* Merge backend specific data from an object file to the output
   object file when linking.  The only data we need to copy at this
   time is the architecture/machine information.  */

static boolean
elf32_h8_merge_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;

  if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
      && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
    {
      if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
                               bfd_get_mach (ibfd)))
        return false;
    }

  return true;
}

/* This function handles relaxing for the H8..

   There's a few relaxing opportunites available on the H8:

     jmp/jsr:24    ->    bra/bsr:8		2 bytes
     The jmp may be completely eliminated if the previous insn is a
     conditional branch to the insn after the jump.  In that case
     we invert the branch and delete the jump and save 4 bytes.

     bCC:16          ->    bCC:8                  2 bytes
     bsr:16          ->    bsr:8                  2 bytes

     mov.b:16	     ->    mov.b:8                2 bytes
     mov.b:24/32     ->    mov.b:8                4 bytes

     mov.[bwl]:24/32 ->    mov.[bwl]:16           2 bytes


*/

static boolean
elf32_h8_relax_section (abfd, sec, link_info, again)
     bfd *abfd;
     asection *sec;
     struct bfd_link_info *link_info;
     boolean *again;
{
  Elf_Internal_Shdr *symtab_hdr;
  Elf_Internal_Rela *internal_relocs;
  Elf_Internal_Rela *free_relocs = NULL;
  Elf_Internal_Rela *irel, *irelend;
  bfd_byte *contents = NULL;
  bfd_byte *free_contents = NULL;
  Elf32_External_Sym *extsyms = NULL;
  Elf32_External_Sym *free_extsyms = NULL;
  static asection *last_input_section = NULL;
  static Elf_Internal_Rela *last_reloc = NULL;

  /* Assume nothing changes.  */
  *again = false;

  /* We don't have to do anything for a relocateable link, if
     this section does not have relocs, or if this is not a
     code section.  */
  if (link_info->relocateable
      || (sec->flags & SEC_RELOC) == 0
      || sec->reloc_count == 0
      || (sec->flags & SEC_CODE) == 0)
    return true;

  /* If this is the first time we have been called for this section,
     initialize the cooked size.  */
  if (sec->_cooked_size == 0)
    sec->_cooked_size = sec->_raw_size;

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;

  /* Get a copy of the native relocations.  */
  internal_relocs = (_bfd_elf32_link_read_relocs
		     (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
		      link_info->keep_memory));
  if (internal_relocs == NULL)
    goto error_return;
  if (! link_info->keep_memory)
    free_relocs = internal_relocs;

  if (sec != last_input_section)
    last_reloc = NULL;

  last_input_section = sec;

  /* Walk through the relocs looking for relaxing opportunities.  */
  irelend = internal_relocs + sec->reloc_count;
  for (irel = internal_relocs; irel < irelend; irel++)
    {
      bfd_vma symval;

      /* Keep track of the previous reloc so that we can delete
	 some long jumps created by the compiler.  */
      if (irel != internal_relocs)
	last_reloc = irel - 1;

      /* Get the section contents if we haven't done so already.  */
      if (contents == NULL)
	{
	  /* Get cached copy if it exists.  */
	  if (elf_section_data (sec)->this_hdr.contents != NULL)
	    contents = elf_section_data (sec)->this_hdr.contents;
	  else
	    {
	      /* Go get them off disk.  */
	      contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
	      if (contents == NULL)
		goto error_return;
	      free_contents = contents;

	      if (! bfd_get_section_contents (abfd, sec, contents,
					      (file_ptr) 0, sec->_raw_size))
		goto error_return;
	    }
	}

      /* Read this BFD's symbols if we haven't done so already.  */
      if (extsyms == NULL)
	{
	  /* Get cached copy if it exists.  */
	  if (symtab_hdr->contents != NULL)
	    extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
	  else
	    {
	      /* Go get them off disk.  */
	      extsyms = ((Elf32_External_Sym *)
			 bfd_malloc (symtab_hdr->sh_size));
	      if (extsyms == NULL)
		goto error_return;
	      free_extsyms = extsyms;
	      if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
		  || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd)
		      != symtab_hdr->sh_size))
		goto error_return;
	    }
	}

      /* Get the value of the symbol referred to by the reloc.  */
      if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
	{
	  Elf_Internal_Sym isym;
	  asection *sym_sec;

	  /* A local symbol.  */
	  bfd_elf32_swap_symbol_in (abfd,
				    extsyms + ELF32_R_SYM (irel->r_info),
				    &isym);

	  sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
	  symval = (isym.st_value
		    + sym_sec->output_section->vma
		    + sym_sec->output_offset);
	}
      else
	{
	  unsigned long indx;
	  struct elf_link_hash_entry *h;

	  /* An external symbol.  */
	  indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
	  h = elf_sym_hashes (abfd)[indx];
	  BFD_ASSERT (h != NULL);
	  if (h->root.type != bfd_link_hash_defined
	      && h->root.type != bfd_link_hash_defweak)
	    {
	      /* This appears to be a reference to an undefined
                 symbol.  Just ignore it--it will be caught by the
                 regular reloc processing.  */
	      continue;
	    }

	  symval = (h->root.u.def.value
		    + h->root.u.def.section->output_section->vma
		    + h->root.u.def.section->output_offset);
	}

      /* For simplicity of coding, we are going to modify the section
	 contents, the section relocs, and the BFD symbol table.  We
	 must tell the rest of the code not to free up this
	 information.  It would be possible to instead create a table
	 of changes which have to be made, as is done in coff-mips.c;
	 that would be more work, but would require less memory when
	 the linker is run.  */
      switch (ELF32_R_TYPE (irel->r_info))
	{
        /* Try to turn a 24 bit absolute branch/call into an 8 bit
	   pc-relative branch/call.  */
	case R_H8_DIR24R8:
	  {
	    bfd_vma value = symval + irel->r_addend;
	    bfd_vma dot, gap;

	    /* Get the address of this instruction.  */
	    dot = (sec->output_section->vma
		   + sec->output_offset + irel->r_offset - 1);

	    /* Compute the distance from this insn to the branch target.  */
	    gap = value - dot;

	    /* If the distance is within -126..+130 inclusive, then we can
	       relax this jump.  +130 is valid since the target will move
	       two bytes closer if we do relax this branch.  */
	    if ((int) gap >= -126 && (int) gap <= 130)
	      {
		unsigned char code;

		/* Note that we've changed the relocs, section contents,
		   etc.  */
		elf_section_data (sec)->relocs = internal_relocs;
		free_relocs = NULL;

		elf_section_data (sec)->this_hdr.contents = contents;
		free_contents = NULL;

		symtab_hdr->contents = (bfd_byte *) extsyms;
		free_extsyms = NULL;

		/* If the previous instruction conditionally jumped around
		   this instruction, we may be able to reverse the condition
		   and redirect the previous instruction to the target of
		   this instruction.

		   Such sequences are used by the compiler to deal with
		   long conditional branches.  */
		if ((int) gap <= 130
		    && (int) gap >= -128
		    && last_reloc
		    && ELF32_R_TYPE (last_reloc->r_info) == R_H8_PCREL8
		    && ELF32_R_SYM (last_reloc->r_info) < symtab_hdr->sh_info)
		  {
		    bfd_vma last_value;
		    asection *last_sym_sec;
		    Elf_Internal_Sym last_symbol;

		    /* We will need to examine the symbol used by the
		       previous relocation.  */

		    bfd_elf32_swap_symbol_in (abfd,
					      (extsyms + ELF32_R_SYM (last_reloc->r_info)),
					      &last_symbol);

		    last_sym_sec
		      = bfd_section_from_elf_index (abfd, last_symbol.st_shndx);
		    last_value = (last_symbol.st_value
				  + last_sym_sec->output_section->vma
				  + last_sym_sec->output_offset);

		    /* Verify that the previous relocation was for a
		       branch around this instruction and that no symbol
		       exists at the current location.  */
		    if (last_value == dot + 4
			&& last_reloc->r_offset + 2 == irel->r_offset
			&& ! elf32_h8_symbol_address_p (abfd, sec,
						        extsyms, dot))
		      {
			/* We can eliminate this jump.  Twiddle the
			   previous relocation as necessary.  */
			irel->r_info
			  = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					  ELF32_R_TYPE (R_H8_NONE));

		        last_reloc->r_info
			  = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					ELF32_R_TYPE (R_H8_PCREL8));
		        last_reloc->r_addend = irel->r_addend;


			code = bfd_get_8 (abfd,
					  contents + last_reloc->r_offset - 1);
			code ^= 1;
			bfd_put_8 (abfd,
				   code,
			contents + last_reloc->r_offset - 1);

			/* Delete four bytes of data.  */
			if (!elf32_h8_relax_delete_bytes (abfd, sec,
							  irel->r_offset - 1,
							  4))
			  goto error_return;

			*again = true;
			break;
		      }
		  }

		/* We could not eliminate this jump, so just shorten it.  */
		code = bfd_get_8 (abfd, contents + irel->r_offset - 1);

		if (code == 0x5e)
		  bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1);
		else if (code == 0x5a)
		  bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1);
		else
		  abort ();

		/* Fix the relocation's type.  */
		irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					     R_H8_PCREL8);

		/* Delete two bytes of data.  */
		if (!elf32_h8_relax_delete_bytes (abfd, sec,
						  irel->r_offset + 1, 2))
		  goto error_return;

		/* That will change things, so, we should relax again.
		   Note that this is not required, and it may be slow.  */
		*again = true;
	      }
	    break;
	  }

	/* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
	   branch.  */
	case R_H8_PCREL16:
	  {
	    bfd_vma value = symval + irel->r_addend;
	    bfd_vma dot;
	    bfd_vma gap;

	    /* Get the address of this instruction.  */
	    dot = (sec->output_section->vma
		   + sec->output_offset
		   + irel->r_offset - 2);

	    gap = value - dot;

	    /* If the distance is within -126..+130 inclusive, then we can
	       relax this jump.  +130 is valid since the target will move
	       two bytes closer if we do relax this branch.  */
	    if ((int)gap >= -126 && (int)gap <= 130)
	      {
	        unsigned char code;

	        /* Note that we've changed the relocs, section contents,
		   etc.  */
	        elf_section_data (sec)->relocs = internal_relocs;
	        free_relocs = NULL;

	        elf_section_data (sec)->this_hdr.contents = contents;
	        free_contents = NULL;

	        symtab_hdr->contents = (bfd_byte *) extsyms;
	        free_extsyms = NULL;

	        /* Get the opcode.  */
	        code = bfd_get_8 (abfd, contents + irel->r_offset - 2);

		if (code == 0x58)
		  {
		    /* bCC:16 -> bCC:8 */
		    /* Get the condition code from the original insn.  */
		    code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
		    code &= 0xf0;
		    code >>= 4;
		    code |= 0x40;
		    bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
		  }
		else if (code == 0x5c)
		  bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2);
		else
		  abort ();

		/* Fix the relocation's type.  */
	        irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					     R_H8_PCREL8);
	        irel->r_offset--;

	        /* Delete two bytes of data.  */
	        if (!elf32_h8_relax_delete_bytes (abfd, sec,
						  irel->r_offset + 1, 2))
		  goto error_return;

	        /* That will change things, so, we should relax again.
		   Note that this is not required, and it may be slow.  */
	        *again = true;
	      }
	    break;
	  }

	/* This is a 16 bit absolute address in a "mov.b" insn, which may
	   become an 8 bit absolute address if its in the right range.  */
	case R_H8_DIR16A8:
	  {
	    bfd_vma value = symval + irel->r_addend;

	    if ((bfd_get_mach (abfd) == bfd_mach_h8300
	         && value >= 0xff00
	         && value <= 0xffff)
	        || ((bfd_get_mach (abfd) == bfd_mach_h8300h
		     || bfd_get_mach (abfd) == bfd_mach_h8300s)
		    && value >= 0xffff00
		    && value <= 0xffffff))
	      {
	        unsigned char code;

	        /* Note that we've changed the relocs, section contents,
		   etc.  */
	        elf_section_data (sec)->relocs = internal_relocs;
	        free_relocs = NULL;

	        elf_section_data (sec)->this_hdr.contents = contents;
	        free_contents = NULL;

	        symtab_hdr->contents = (bfd_byte *) extsyms;
	        free_extsyms = NULL;

	        /* Get the opcode.  */
	        code = bfd_get_8 (abfd, contents + irel->r_offset - 2);

	        /* Sanity check.  */
	        if (code != 0x6a)
		  abort ();

	        code = bfd_get_8 (abfd, contents + irel->r_offset - 1);

	        if ((code & 0xf0) == 0x00)
		  bfd_put_8 (abfd,
			     (code & 0xf) | 0x20,
			      contents + irel->r_offset - 2);
	        else if ((code & 0xf0) == 0x80)
		  bfd_put_8 (abfd,
			     (code & 0xf) | 0x30,
			      contents + irel->r_offset - 2);
	        else
		  abort ();

	        /* Fix the relocation's type.  */
	        irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					     R_H8_DIR8);

	        /* Delete two bytes of data.  */
	        if (!elf32_h8_relax_delete_bytes (abfd, sec,
						  irel->r_offset + 1, 2))
		  goto error_return;

	        /* That will change things, so, we should relax again.
		   Note that this is not required, and it may be slow.  */
	        *again = true;
	      }
	    break;
	  }

	/* This is a 24 bit absolute address in a "mov.b" insn, which may
	   become an 8 bit absolute address if its in the right range.  */
	case R_H8_DIR24A8:
	  {
	    bfd_vma value = symval + irel->r_addend;

	    if ((bfd_get_mach (abfd) == bfd_mach_h8300
	         && value >= 0xff00
	         && value <= 0xffff)
	        || ((bfd_get_mach (abfd) == bfd_mach_h8300h
		     || bfd_get_mach (abfd) == bfd_mach_h8300s)
		    && value >= 0xffff00
		    && value <= 0xffffff))
	      {
	        unsigned char code;

	        /* Note that we've changed the relocs, section contents,
		   etc.  */
	        elf_section_data (sec)->relocs = internal_relocs;
	        free_relocs = NULL;

	        elf_section_data (sec)->this_hdr.contents = contents;
	        free_contents = NULL;

	        symtab_hdr->contents = (bfd_byte *) extsyms;
	        free_extsyms = NULL;

	        /* Get the opcode.  */
	        code = bfd_get_8 (abfd, contents + irel->r_offset - 2);

	        /* Sanity check.  */
	        if (code != 0x6a)
		  abort ();

	        code = bfd_get_8 (abfd, contents + irel->r_offset - 1);

	        if ((code & 0xf0) == 0x00)
		  bfd_put_8 (abfd,
			     (code & 0xf) | 0x20,
			      contents + irel->r_offset - 2);
	        else if ((code & 0xf0) == 0x80)
		  bfd_put_8 (abfd,
			     (code & 0xf) | 0x30,
			      contents + irel->r_offset - 2);
	        else
		  abort ();

	        /* Fix the relocation's type.  */
	        irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					     R_H8_DIR8);

	        /* Delete two bytes of data.  */
	        if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset, 2))
		  goto error_return;

	        /* That will change things, so, we should relax again.
		   Note that this is not required, and it may be slow.  */
	        *again = true;
	      }
	  }

	/* FALLTHRU */

	/* This is a 24/32bit absolute address in a "mov" insn, which may
	   become a 16bit absoulte address if it is in the right range.  */
	case R_H8_DIR32A16:
	  {
	    bfd_vma value = symval + irel->r_addend;

	    if (value <= 0x7fff || value >= 0xff8000)
	      {
	        unsigned char code;

	        /* Note that we've changed the relocs, section contents,
		   etc.  */
	        elf_section_data (sec)->relocs = internal_relocs;
	        free_relocs = NULL;

	        elf_section_data (sec)->this_hdr.contents = contents;
	        free_contents = NULL;

	        symtab_hdr->contents = (bfd_byte *) extsyms;
	        free_extsyms = NULL;

	        /* Get the opcode.  */
	        code = bfd_get_8 (abfd, contents + irel->r_offset - 1);

	        /* We just need to turn off bit 0x20.  */
	        code &= ~0x20;

	        bfd_put_8 (abfd, code, contents + irel->r_offset - 1);

	        /* Fix the relocation's type.  */
	        irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
					     R_H8_DIR16A8);

	        /* Delete two bytes of data.  */
	        if (!elf32_h8_relax_delete_bytes (abfd, sec,
						  irel->r_offset + 1, 2))
		  goto error_return;

	        /* That will change things, so, we should relax again.
		   Note that this is not required, and it may be slow.  */
	        *again = true;
	      }
	    break;
	  }

	default:
	  break;
	}
    }

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

  if (free_contents != NULL)
    {
      if (! link_info->keep_memory)
	free (free_contents);
      else
	{
	  /* Cache the section contents for elf_link_input_bfd.  */
	  elf_section_data (sec)->this_hdr.contents = contents;
	}
      free_contents = NULL;
    }

  if (free_extsyms != NULL)
    {
      if (! link_info->keep_memory)
	free (free_extsyms);
      else
	{
	  /* Cache the symbols for elf_link_input_bfd.  */
	  symtab_hdr->contents = (unsigned char *) extsyms;
	}
      free_extsyms = NULL;
    }

  return true;

 error_return:
  if (free_relocs != NULL)
    free (free_relocs);
  if (free_contents != NULL)
    free (free_contents);
  if (free_extsyms != NULL)
    free (free_extsyms);
  return false;
}

/* Delete some bytes from a section while relaxing.  */

static boolean
elf32_h8_relax_delete_bytes (abfd, sec, addr, count)
     bfd *abfd;
     asection *sec;
     bfd_vma addr;
     int count;
{
  Elf_Internal_Shdr *symtab_hdr;
  Elf32_External_Sym *extsyms;
  int shndx, index;
  bfd_byte *contents;
  Elf_Internal_Rela *irel, *irelend;
  Elf_Internal_Rela *irelalign;
  bfd_vma toaddr;
  Elf32_External_Sym *esym, *esymend;
  struct elf_link_hash_entry *sym_hash;

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  extsyms = (Elf32_External_Sym *) symtab_hdr->contents;

  shndx = _bfd_elf_section_from_bfd_section (abfd, sec);

  contents = elf_section_data (sec)->this_hdr.contents;

  /* The deletion must stop at the next ALIGN reloc for an aligment
     power larger than the number of bytes we are deleting.  */

  irelalign = NULL;
  toaddr = sec->_cooked_size;

  irel = elf_section_data (sec)->relocs;
  irelend = irel + sec->reloc_count;

  /* Actually delete the bytes.  */
  memmove (contents + addr, contents + addr + count,
	   (size_t) (toaddr - addr - count));
  sec->_cooked_size -= count;

  /* Adjust all the relocs.  */
  for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
    {
      /* Get the new reloc address.  */
      if ((irel->r_offset > addr
	   && irel->r_offset < toaddr))
	irel->r_offset -= count;
    }

  /* Adjust the local symbols defined in this section.  */
  esym = extsyms;
  esymend = esym + symtab_hdr->sh_info;
  for (; esym < esymend; esym++)
    {
      Elf_Internal_Sym isym;

      bfd_elf32_swap_symbol_in (abfd, esym, &isym);

      if (isym.st_shndx == shndx
	  && isym.st_value > addr
	  && isym.st_value < toaddr)
	{
	  isym.st_value -= count;
	  bfd_elf32_swap_symbol_out (abfd, &isym, esym);
	}
    }

  /* Now adjust the global symbols defined in this section.  */
  esym = extsyms + symtab_hdr->sh_info;
  esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
  for (index = 0; esym < esymend; esym++, index++)
    {
      Elf_Internal_Sym isym;

      bfd_elf32_swap_symbol_in (abfd, esym, &isym);
      sym_hash = elf_sym_hashes (abfd)[index];
      if (isym.st_shndx == shndx
	  && ((sym_hash)->root.type == bfd_link_hash_defined
	      || (sym_hash)->root.type == bfd_link_hash_defweak)
	  && (sym_hash)->root.u.def.section == sec
	  && (sym_hash)->root.u.def.value > addr
	  && (sym_hash)->root.u.def.value < toaddr)
	{
	  (sym_hash)->root.u.def.value -= count;
	}
    }

  return true;
}

/* Return true if a symbol exists at the given address, else return
   false.  */
static boolean
elf32_h8_symbol_address_p (abfd, sec, extsyms, addr)
     bfd *abfd;
     asection *sec;
     Elf32_External_Sym *extsyms;
     bfd_vma addr;
{
  Elf_Internal_Shdr *symtab_hdr;
  int shndx;
  Elf32_External_Sym *esym, *esymend;
  struct elf_link_hash_entry **sym_hash, **sym_hash_end;

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  shndx = _bfd_elf_section_from_bfd_section (abfd, sec);

  /* Examine all the symbols.  */
  esym = extsyms;
  esymend = esym + symtab_hdr->sh_info;
  for (; esym < esymend; esym++)
    {
      Elf_Internal_Sym isym;

      bfd_elf32_swap_symbol_in (abfd, esym, &isym);

      if (isym.st_shndx == shndx
	  && isym.st_value == addr)
	return true;
    }

  sym_hash = elf_sym_hashes (abfd);
  sym_hash_end = (sym_hash
		  + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
		     - symtab_hdr->sh_info));
  for (; sym_hash < sym_hash_end; sym_hash++)
    {
      if (((*sym_hash)->root.type == bfd_link_hash_defined
	   || (*sym_hash)->root.type == bfd_link_hash_defweak)
	  && (*sym_hash)->root.u.def.section == sec
	  && (*sym_hash)->root.u.def.value == addr)
	return true;
    }
  return false;
}

/* This is a version of bfd_generic_get_relocated_section_contents
   which uses elf32_h8_relocate_section.  */

static bfd_byte *
elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order,
					 data, relocateable, symbols)
     bfd *output_bfd;
     struct bfd_link_info *link_info;
     struct bfd_link_order *link_order;
     bfd_byte *data;
     boolean relocateable;
     asymbol **symbols;
{
  Elf_Internal_Shdr *symtab_hdr;
  asection *input_section = link_order->u.indirect.section;
  bfd *input_bfd = input_section->owner;
  asection **sections = NULL;
  Elf_Internal_Rela *internal_relocs = NULL;
  Elf32_External_Sym *external_syms = NULL;
  Elf_Internal_Sym *internal_syms = NULL;

  /* We only need to handle the case of relaxing, or of having a
     particular set of section contents, specially.  */
  if (relocateable
      || elf_section_data (input_section)->this_hdr.contents == NULL)
    return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
						       link_order, data,
						       relocateable,
						       symbols);

  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;

  memcpy (data, elf_section_data (input_section)->this_hdr.contents,
	  (size_t) input_section->_raw_size);

  if ((input_section->flags & SEC_RELOC) != 0
      && input_section->reloc_count > 0)
    {
      Elf_Internal_Sym *isymp;
      asection **secpp;
      Elf32_External_Sym *esym, *esymend;

      if (symtab_hdr->contents != NULL)
	external_syms = (Elf32_External_Sym *) symtab_hdr->contents;
      else
	{
	  bfd_size_type amt;

	  amt = symtab_hdr->sh_info;
	  amt *= sizeof (Elf32_External_Sym);
	  external_syms = (Elf32_External_Sym *) bfd_malloc (amt);
	  if (external_syms == NULL && symtab_hdr->sh_info > 0)
	    goto error_return;
	  if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
	      || bfd_bread (external_syms, amt, input_bfd) != amt)
	    goto error_return;
	}

      internal_relocs = (_bfd_elf32_link_read_relocs
			 (input_bfd, input_section, (PTR) NULL,
			  (Elf_Internal_Rela *) NULL, false));
      if (internal_relocs == NULL)
	goto error_return;

      internal_syms = ((Elf_Internal_Sym *)
		       bfd_malloc ((bfd_size_type) symtab_hdr->sh_info
				   * sizeof (Elf_Internal_Sym)));
      if (internal_syms == NULL && symtab_hdr->sh_info > 0)
	goto error_return;

      sections = (asection **) bfd_malloc ((bfd_size_type) symtab_hdr->sh_info
					   * sizeof (asection *));
      if (sections == NULL && symtab_hdr->sh_info > 0)
	goto error_return;

      isymp = internal_syms;
      secpp = sections;
      esym = external_syms;
      esymend = esym + symtab_hdr->sh_info;
      for (; esym < esymend; ++esym, ++isymp, ++secpp)
	{
	  asection *isec;

	  bfd_elf32_swap_symbol_in (input_bfd, esym, isymp);

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

	  *secpp = isec;
	}

      if (! elf32_h8_relocate_section (output_bfd, link_info, input_bfd,
				       input_section, data, internal_relocs,
				       internal_syms, sections))
	goto error_return;

      if (sections != NULL)
	free (sections);
      sections = NULL;
      if (internal_syms != NULL)
	free (internal_syms);
      internal_syms = NULL;
      if (external_syms != NULL && symtab_hdr->contents == NULL)
	free (external_syms);
      external_syms = NULL;
      if (internal_relocs != elf_section_data (input_section)->relocs)
	free (internal_relocs);
      internal_relocs = NULL;
    }

  return data;

 error_return:
  if (internal_relocs != NULL
      && internal_relocs != elf_section_data (input_section)->relocs)
    free (internal_relocs);
  if (external_syms != NULL && symtab_hdr->contents == NULL)
    free (external_syms);
  if (internal_syms != NULL)
    free (internal_syms);
  if (sections != NULL)
    free (sections);
  return NULL;
}


#define TARGET_BIG_SYM			bfd_elf32_h8300_vec
#define TARGET_BIG_NAME			"elf32-h8300"
#define ELF_ARCH			bfd_arch_h8300
#define ELF_MACHINE_CODE		EM_H8_300
#define ELF_MAXPAGESIZE			0x1
#define bfd_elf32_bfd_reloc_type_lookup elf32_h8_reloc_type_lookup
#define elf_info_to_howto		elf32_h8_info_to_howto
#define elf_info_to_howto_rel		elf32_h8_info_to_howto_rel

/* So we can set/examine bits in e_flags to get the specific
   H8 architecture in use.  */
#define elf_backend_final_write_processing \
  elf32_h8_final_write_processing
#define elf_backend_object_p \
  elf32_h8_object_p
#define bfd_elf32_bfd_merge_private_bfd_data \
  elf32_h8_merge_private_bfd_data

/* ??? when elf_backend_relocate_section is not defined, elf32-target.h
   defaults to using _bfd_generic_link_hash_table_create, but
   elflink.h:bfd_elf32_size_dynamic_sections uses
   dynobj = elf_hash_table (info)->dynobj;
   and thus requires an elf hash table.  */
#define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create

/* Use an H8 specific linker, not the ELF generic linker.  */
#define elf_backend_relocate_section elf32_h8_relocate_section

/* And relaxing stuff.  */
#define bfd_elf32_bfd_relax_section     elf32_h8_relax_section
#define bfd_elf32_bfd_get_relocated_section_contents \
                                elf32_h8_get_relocated_section_contents


#include "elf32-target.h"