File: elf32-visium.c

package info (click to toggle)
binutils 2.31.1-15
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 309,056 kB
  • sloc: ansic: 1,161,198; asm: 638,508; cpp: 128,829; exp: 68,580; makefile: 55,828; sh: 22,360; yacc: 14,238; lisp: 13,272; perl: 2,111; ada: 1,681; lex: 1,652; pascal: 1,446; cs: 879; sed: 195; python: 154; xml: 95; awk: 25
file content (878 lines) | stat: -rw-r--r-- 26,490 bytes parent folder | download | duplicates (3)
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
/* Visium-specific support for 32-bit ELF.

   Copyright (C) 2003-2018 Free Software Foundation, Inc.

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

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

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

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

#include "sysdep.h"
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/visium.h"
#include "libiberty.h"

static bfd_reloc_status_type visium_elf_howto_parity_reloc
  (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);

static reloc_howto_type visium_elf_howto_table[] = {
  /* This reloc does nothing.  */
  HOWTO (R_VISIUM_NONE,		/* type */
	 0,			/* rightshift */
	 3,			/* 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_VISIUM_NONE",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 8 bit absolute relocation.  */
  HOWTO (R_VISIUM_8,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_VISIUM_8",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00,			/* src_mask */
	 0xff,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 16 bit absolute relocation.  */
  HOWTO (R_VISIUM_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_VISIUM_16",		/* name */
	 FALSE,			/* partial_inplace */
	 0x0000,		/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 32 bit absolute relocation.  */
  HOWTO (R_VISIUM_32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_VISIUM_32",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */


  /* A 8 bit PC relative relocation.  */
  HOWTO (R_VISIUM_8_PCREL,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_VISIUM_8_PCREL",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00,			/* src_mask */
	 0xff,			/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* A 16 bit PC relative relocation.  */
  HOWTO (R_VISIUM_16_PCREL,	/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_VISIUM_16_PCREL",	/* name */
	 FALSE,			/* partial inplace */
	 0x0000,		/* src_mask */
	 0xffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* A 32-bit PC relative relocation.  */
  HOWTO (R_VISIUM_32_PCREL,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_VISIUM_32_PCREL",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* A 16-bit PC word relative offset, relative to start of instruction
     and always in the second half of the instruction.  */
  HOWTO (R_VISIUM_PC16,		/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,	/* complain_on_overflow */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_PC16",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* The high 16 bits of symbol value.  */
  HOWTO (R_VISIUM_HI16,		/* type */
	 16,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,	/* complain_on_overflow */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_HI16",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* The low 16 bits of symbol value.  */
  HOWTO (R_VISIUM_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 */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_LO16",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 16 bit immediate value.  */
  HOWTO (R_VISIUM_IM16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_unsigned,	/* complain_on_overflow */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_IM16",	/* name */
	 FALSE,			/* partial_inplace */
	 0x0000000,		/* src_mask */
	 0x000ffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* The high 16 bits of symbol value, pc relative.  */
  HOWTO (R_VISIUM_HI16_PCREL,	/* type */
	 16,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,	/* complain_on_overflow */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_HI16_PCREL",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* The low 16 bits of symbol value, pc relative.  */
  HOWTO (R_VISIUM_LO16_PCREL,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,	/* complain_on_overflow */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_LO16_PCREL",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* A 16 bit immediate value, pc relative.  */
  HOWTO (R_VISIUM_IM16_PCREL,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_unsigned,	/* complain_on_overflow */
	 visium_elf_howto_parity_reloc,	/* special_function */
	 "R_VISIUM_IM16_PCREL",	/* name */
	 FALSE,			/* partial_inplace */
	 0x0000000,		/* src_mask */
	 0x000ffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

};

/* GNU extension to record C++ vtable hierarchy.  */
static reloc_howto_type visium_elf_vtinherit_howto =
  HOWTO (R_VISIUM_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_VISIUM_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 visium_elf_vtentry_howto =
  HOWTO (R_VISIUM_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 */
	 NULL,			   /* special_function */
	 "R_VISIUM_GNU_VTENTRY",   /* name */
	 FALSE,			   /* partial_inplace */
	 0,			   /* src_mask */
	 0,			   /* dst_mask */
	 FALSE);		   /* pcrel_offset */

/* Return the parity bit for INSN shifted to its final position.  */

static bfd_vma
visium_parity_bit (bfd_vma insn)
{
  bfd_vma p = 0;
  int i;

  for (i = 0; i < 31; i++)
    {
      p ^= (insn & 1);
      insn >>= 1;
    }

  return p << 31;
}

/* This "special function" will only be used when the input and
   output files have different formats ie. when generating S-records
   directly using "--oformat srec". Otherwise we use
   _bfd_final_link_relocate which uses a howto structure, but does
   not use the special_function field.

   It sets instruction parity to even.  This cannot be done by a howto.  */

static bfd_reloc_status_type
visium_elf_howto_parity_reloc (bfd * input_bfd, arelent *reloc_entry,
			       asymbol *symbol, PTR data,
			       asection *input_section, bfd *output_bfd,
			       char **error_message ATTRIBUTE_UNUSED)
{
  bfd_reloc_status_type ret;
  bfd_vma relocation;
  bfd_byte *inplace_address;
  bfd_vma insn;

  /* This part is from bfd_elf_generic_reloc.
     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->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  /* Now do the reloc in the usual way.  */

  /* Sanity check the address (offset in section).  */
  if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
    return bfd_reloc_outofrange;

  ret = bfd_reloc_ok;
  if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
    ret = bfd_reloc_undefined;

  if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
    relocation = 0;
  else
    relocation = symbol->value;

  /* Only do this for a final link.  */
  if (output_bfd == (bfd *) NULL)
    {
      relocation += symbol->section->output_section->vma;
      relocation += symbol->section->output_offset;
    }

  relocation += reloc_entry->addend;
  inplace_address = (bfd_byte *) data + reloc_entry->address;
  insn = bfd_get_32 (input_bfd, inplace_address);

  if (reloc_entry->howto->pc_relative)
    {
      relocation -= input_section->output_section->vma;
      relocation -= input_section->output_offset;
      relocation -= reloc_entry->address;
    }

  switch (reloc_entry->howto->type)
    {
    case R_VISIUM_PC16:
      if (ret == bfd_reloc_ok
	  && ((bfd_signed_vma) relocation < -0x20000
	      || (bfd_signed_vma) relocation > 0x1ffff))
	ret = bfd_reloc_overflow;
      relocation = (relocation >> 2) & 0xffff;
      break;
    case R_VISIUM_HI16:
    case R_VISIUM_HI16_PCREL:
      relocation = (relocation >> 16) & 0xffff;
      break;
    case R_VISIUM_LO16:
    case R_VISIUM_LO16_PCREL:
      relocation &= 0xffff;
      break;
    case R_VISIUM_IM16:
    case R_VISIUM_IM16_PCREL:
      if (ret == bfd_reloc_ok && (relocation & 0xffff0000) != 0)
	ret = bfd_reloc_overflow;
      relocation &= 0xffff;
      break;
    }
  insn = (insn & 0x7fff0000) | relocation;
  insn |= visium_parity_bit (insn);
  bfd_put_32 (input_bfd, insn, inplace_address);

  if (output_bfd != (bfd *) NULL)
    reloc_entry->address += input_section->output_offset;

  return ret;
}

static reloc_howto_type *
visium_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
			  bfd_reloc_code_real_type code)
{
  /* Note that the visium_elf_howto_table is indexed by the R_
     constants. Thus, the order that the howto records appear in the
     table *must* match the order of the relocation types defined in
     include/elf/visium.h.  */
  switch (code)
    {
    case BFD_RELOC_NONE:
      return &visium_elf_howto_table[(int) R_VISIUM_NONE];
    case BFD_RELOC_8:
      return &visium_elf_howto_table[(int) R_VISIUM_8];
    case BFD_RELOC_16:
      return &visium_elf_howto_table[(int) R_VISIUM_16];
    case BFD_RELOC_32:
      return &visium_elf_howto_table[(int) R_VISIUM_32];
    case BFD_RELOC_8_PCREL:
      return &visium_elf_howto_table[(int) R_VISIUM_8_PCREL];
    case BFD_RELOC_16_PCREL:
      return &visium_elf_howto_table[(int) R_VISIUM_16_PCREL];
    case BFD_RELOC_32_PCREL:
      return &visium_elf_howto_table[(int) R_VISIUM_32_PCREL];
    case BFD_RELOC_VISIUM_REL16:
      return &visium_elf_howto_table[(int) R_VISIUM_PC16];
    case BFD_RELOC_VISIUM_HI16:
      return &visium_elf_howto_table[(int) R_VISIUM_HI16];
    case BFD_RELOC_VISIUM_LO16:
      return &visium_elf_howto_table[(int) R_VISIUM_LO16];
    case BFD_RELOC_VISIUM_IM16:
      return &visium_elf_howto_table[(int) R_VISIUM_IM16];
    case BFD_RELOC_VISIUM_HI16_PCREL:
      return &visium_elf_howto_table[(int) R_VISIUM_HI16_PCREL];
    case BFD_RELOC_VISIUM_LO16_PCREL:
      return &visium_elf_howto_table[(int) R_VISIUM_LO16_PCREL];
    case BFD_RELOC_VISIUM_IM16_PCREL:
      return &visium_elf_howto_table[(int) R_VISIUM_IM16_PCREL];
    case BFD_RELOC_VTABLE_INHERIT:
      return &visium_elf_vtinherit_howto;
    case BFD_RELOC_VTABLE_ENTRY:
      return &visium_elf_vtentry_howto;
    default:
      return NULL;
    }
}

static reloc_howto_type *
visium_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
  unsigned int i;

  for (i = 0;
       i < (sizeof (visium_elf_howto_table)
	    / sizeof (visium_elf_howto_table[0])); i++)
    if (visium_elf_howto_table[i].name != NULL
	&& strcasecmp (visium_elf_howto_table[i].name, r_name) == 0)
      return &visium_elf_howto_table[i];

  if (strcasecmp (visium_elf_vtinherit_howto.name, r_name) == 0)
    return &visium_elf_vtinherit_howto;
  if (strcasecmp (visium_elf_vtentry_howto.name, r_name) == 0)
    return &visium_elf_vtentry_howto;

  return NULL;
}

/* Set the howto pointer for a VISIUM ELF reloc.  */

static bfd_boolean
visium_info_to_howto_rela (bfd *abfd, arelent *cache_ptr,
			   Elf_Internal_Rela *dst)
{
  unsigned int r_type = ELF32_R_TYPE (dst->r_info);

  switch (r_type)
    {
    case R_VISIUM_GNU_VTINHERIT:
      cache_ptr->howto = &visium_elf_vtinherit_howto;
      break;

    case R_VISIUM_GNU_VTENTRY:
      cache_ptr->howto = &visium_elf_vtentry_howto;
      break;

    default:
      if (r_type >= ARRAY_SIZE (visium_elf_howto_table))
	{
	  /* xgettext:c-format */
	  _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
			      abfd, r_type);
	  bfd_set_error (bfd_error_bad_value);
	  return FALSE;
	}
      cache_ptr->howto = &visium_elf_howto_table[r_type];
      break;
    }
  return TRUE;
}

/* Look through the relocs for a section during the first phase.
   Since we don't do .gots or .plts, we just need to consider the
   virtual table relocs for gc.  */

static bfd_boolean
visium_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
			 asection *sec, const Elf_Internal_Rela *relocs)
{
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  const Elf_Internal_Rela *rel;
  const Elf_Internal_Rela *rel_end;

  if (bfd_link_relocatable (info))
    return TRUE;

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

  rel_end = relocs + sec->reloc_count;
  for (rel = relocs; rel < rel_end; rel++)
    {
      struct elf_link_hash_entry *h;
      unsigned long r_symndx;

      r_symndx = ELF32_R_SYM (rel->r_info);
      if (r_symndx < symtab_hdr->sh_info)
	h = NULL;
      else
	{
	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
	  while (h->root.type == bfd_link_hash_indirect
		 || h->root.type == bfd_link_hash_warning)
	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
	}

      switch (ELF32_R_TYPE (rel->r_info))
	{
	  /* This relocation describes the C++ object vtable hierarchy.
	     Reconstruct it for later use during GC.  */
	case R_VISIUM_GNU_VTINHERIT:
	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
	    return FALSE;
	  break;

	  /* This relocation describes which C++ vtable entries are actually
	     used.  Record for later use during GC.  */
	case R_VISIUM_GNU_VTENTRY:
	  if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
	    return FALSE;
	  break;
	}
    }

  return TRUE;
}

/* Relocate a VISIUM ELF section.  */

static bfd_boolean
visium_elf_relocate_section (bfd *output_bfd,
			     struct bfd_link_info *info, bfd *input_bfd,
			     asection *input_section, bfd_byte *contents,
			     Elf_Internal_Rela *relocs,
			     Elf_Internal_Sym *local_syms,
			     asection **local_sections)
{
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  Elf_Internal_Rela *rel;
  Elf_Internal_Rela *relend;

  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (input_bfd);
  relend = relocs + input_section->reloc_count;

  for (rel = relocs; rel < relend; rel++)
    {
      reloc_howto_type *howto;
      unsigned long r_symndx;
      Elf_Internal_Sym *sym;
      asection *sec;
      struct elf_link_hash_entry *h;
      bfd_vma relocation;
      bfd_reloc_status_type r;
      const char *name = NULL;
      int r_type;
      bfd_vma insn;

      r_type = ELF32_R_TYPE (rel->r_info);

      if (r_type == R_VISIUM_GNU_VTINHERIT || r_type == R_VISIUM_GNU_VTENTRY)
	continue;

      r_symndx = ELF32_R_SYM (rel->r_info);

      howto = visium_elf_howto_table + ELF32_R_TYPE (rel->r_info);
      h = NULL;
      sym = NULL;
      sec = NULL;

      if (r_symndx < symtab_hdr->sh_info)
	{
	  /* This is a local symbol.  */
	  sym = local_syms + r_symndx;
	  sec = local_sections[r_symndx];
	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);

	  name = bfd_elf_string_from_elf_section
	    (input_bfd, symtab_hdr->sh_link, sym->st_name);
	  name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
	}
      else
	{
	  bfd_boolean unresolved_reloc;
	  bfd_boolean warned, ignored;

	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
				   r_symndx, symtab_hdr, sym_hashes,
				   h, sec, relocation,
				   unresolved_reloc, warned, ignored);

	  name = h->root.root.string;
	}

      if (sec != NULL && discarded_section (sec))
	{
	  /* For relocs against symbols from removed linkonce sections,
	     or sections discarded by a linker script, we just want the
	     section contents zeroed.  Avoid any special processing.  */
	  _bfd_clear_contents (howto, input_bfd, input_section,
			       contents + rel->r_offset);

	  rel->r_info = 0;
	  rel->r_addend = 0;
	  continue;
	}

      if (bfd_link_relocatable (info))
	continue;

      switch (r_type)
	{
	case R_VISIUM_PC16:
	case R_VISIUM_HI16:
	case R_VISIUM_LO16:
	case R_VISIUM_IM16:
	case R_VISIUM_HI16_PCREL:
	case R_VISIUM_LO16_PCREL:
	case R_VISIUM_IM16_PCREL:
	  r = _bfd_final_link_relocate (howto, input_bfd, input_section,
					contents, rel->r_offset,
					relocation, rel->r_addend);

	  /* For instruction relocations, the parity needs correcting.  */
	  if (r == bfd_reloc_ok)
	    {
	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
	      insn = (insn & 0x7fffffff) | visium_parity_bit (insn);
	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
	    }
	  break;

	default:
	  r = _bfd_final_link_relocate (howto, input_bfd, input_section,
					contents, rel->r_offset,
					relocation, rel->r_addend);
	  break;
	}

      if (r != bfd_reloc_ok)
	{
	  const char *msg = (const char *) NULL;

	  switch (r)
	    {
	    case bfd_reloc_overflow:
	      (*info->callbacks->reloc_overflow)
		(info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
		 input_bfd, input_section, rel->r_offset);
	      break;

	    case bfd_reloc_undefined:
	      (*info->callbacks->undefined_symbol)
		(info, name, input_bfd, input_section, rel->r_offset, TRUE);
	      break;

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

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

	    case bfd_reloc_dangerous:
	      msg = _("internal error: dangerous relocation");
	      break;

	    default:
	      msg = _("internal error: unknown error");
	      break;
	    }

	  if (msg)
	    (*info->callbacks->warning) (info, msg, name, input_bfd,
					 input_section, rel->r_offset);
	}
    }

  return TRUE;
}

/* This function is called during section gc to discover the section a
   to which a particular relocation refers.  Return the section that
   should be marked against GC for a given relocation.  */

static asection *
visium_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
			 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
			 Elf_Internal_Sym *sym)
{
  if (h != NULL)
    switch (ELF32_R_TYPE (rel->r_info))
      {
      case R_VISIUM_GNU_VTINHERIT:
      case R_VISIUM_GNU_VTENTRY:
	return NULL;
      }

  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}

static void
visium_elf_post_process_headers (bfd *abfd,
				 struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
  Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
  i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE;
  i_ehdrp->e_ident[EI_ABIVERSION] = 1;
}

/* Function to set the ELF flag bits.  */

static bfd_boolean
visium_elf_set_private_flags (bfd *abfd, flagword flags)
{
  elf_elfheader (abfd)->e_flags = flags;
  elf_flags_init (abfd) = TRUE;
  return TRUE;
}

/* Copy backend specific data from one object module to another.  */

static bfd_boolean
visium_elf_copy_private_bfd_data (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_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
  elf_flags_init (obfd) = TRUE;

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

  return TRUE;
}

/* Merge backend specific data from an object
   file to the output object file when linking.  */

static bfd_boolean
visium_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
{
  bfd *obfd = info->output_bfd;
  flagword old_flags;
  flagword new_flags;
  flagword mismatch;
  const char *opt_arch = NULL;
  const char *new_opt_with = NULL;
  const char *old_opt_with = NULL;
  const char *with = "with";
  const char *without = "without";
  const char *mcm = "mcm";
  const char *mcm24 = "mcm24";
  const char *gr6 = "gr6";

  new_flags = elf_elfheader (ibfd)->e_flags;
  old_flags = elf_elfheader (obfd)->e_flags;

  if (!elf_flags_init (obfd))
    {
      /* First call, no flags set.  */
      elf_flags_init (obfd) = TRUE;
      elf_elfheader (obfd)->e_flags = new_flags;
    }
  else
    {
      mismatch = (new_flags ^ old_flags)
	& (EF_VISIUM_ARCH_MCM | EF_VISIUM_ARCH_MCM24 | EF_VISIUM_ARCH_GR6);
      if (mismatch & EF_VISIUM_ARCH_GR6)
	{
	  opt_arch = gr6;
	  new_opt_with = new_flags & EF_VISIUM_ARCH_GR6 ? with : without;
	  old_opt_with = old_flags & EF_VISIUM_ARCH_GR6 ? with : without;
	}
      else if (mismatch & EF_VISIUM_ARCH_MCM)
	{
	  opt_arch = mcm;
	  new_opt_with = new_flags & EF_VISIUM_ARCH_MCM ? with : without;
	  old_opt_with = old_flags & EF_VISIUM_ARCH_MCM ? with : without;
	}
      else if (mismatch & EF_VISIUM_ARCH_MCM24)
	{
	  opt_arch = mcm24;
	  new_opt_with = new_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
	  old_opt_with = old_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
	}

      if (mismatch)
	_bfd_error_handler
	  /* xgettext:c-format */
	  (_("%pB: compiled %s -mtune=%s and linked with modules"
	     " compiled %s -mtune=%s"),
	   ibfd, new_opt_with, opt_arch, old_opt_with, opt_arch);
    }

  return TRUE;
}

static bfd_boolean
visium_elf_print_private_bfd_data (bfd *abfd, void *ptr)
{
  FILE *file = (FILE *) ptr;
  flagword flags;

  BFD_ASSERT (abfd != NULL && ptr != NULL);

  /* Print normal ELF private data.  */
  _bfd_elf_print_private_bfd_data (abfd, ptr);

  flags = elf_elfheader (abfd)->e_flags;
  fprintf (file, _("private flags = 0x%lx:"), (long) flags);

  if (flags & EF_VISIUM_ARCH_GR6)
    fprintf (file, " -mtune=gr6");
  else if (flags & EF_VISIUM_ARCH_MCM)
    fprintf (file, " -mtune=mcm");
  else if (flags & EF_VISIUM_ARCH_MCM24)
    fprintf (file, " -mtune=mcm24");

  fputc ('\n', file);
  return TRUE;
}

#define ELF_ARCH		bfd_arch_visium
#define ELF_MACHINE_CODE	EM_VISIUM
#define ELF_MAXPAGESIZE		1

#define TARGET_BIG_SYM		visium_elf32_vec
#define TARGET_BIG_NAME		"elf32-visium"

#define elf_info_to_howto_rel			NULL
#define elf_info_to_howto			visium_info_to_howto_rela
#define elf_backend_relocate_section		visium_elf_relocate_section
#define elf_backend_gc_mark_hook		visium_elf_gc_mark_hook
#define elf_backend_check_relocs		visium_elf_check_relocs
#define elf_backend_rela_normal			1

#define elf_backend_can_gc_sections		1

#define bfd_elf32_bfd_reloc_type_lookup		visium_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup		visium_reloc_name_lookup

#define bfd_elf32_bfd_set_private_flags		visium_elf_set_private_flags
#define bfd_elf32_bfd_copy_private_bfd_data	visium_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data	visium_elf_merge_private_bfd_data
#define bfd_elf32_bfd_print_private_bfd_data	visium_elf_print_private_bfd_data
#define elf_backend_post_process_headers	visium_elf_post_process_headers

#include "elf32-target.h"