aboutsummaryrefslogtreecommitdiff
path: root/bfd/elf32-epiphany.c
blob: 6b798b17a5e9e53433afa564bc67517bcb4562bc (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
/* Adapteva epiphany specific support for 32-bit ELF
   Copyright (C) 2000-2016 Free Software Foundation, Inc.
   Contributed by Embecosm on behalf of Adapteva, 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 "libbfd.h"
#include "elf-bfd.h"
#include "elf/epiphany.h"
#include "libiberty.h"

/* Struct used to pass miscellaneous paramaters which
   helps to avoid overly long parameter lists.  */
struct misc
{
  Elf_Internal_Shdr *  symtab_hdr;
  Elf_Internal_Rela *  irelbase;
  bfd_byte *           contents;
  Elf_Internal_Sym *   isymbuf;
};

struct epiphany_opcode
{
  unsigned short opcode;
  unsigned short mask;
};

static bfd_boolean epiphany_relaxed = FALSE;

/* Relocation tables.  */
static reloc_howto_type epiphany_elf_howto_table [] =
{
#define AHOW(t,rs,s,bs,pr,bp,co,name,sm,dm)	\
    HOWTO(t,                    /* type */ \
	  rs,                   /* rightshift */ \
	  s,                    /* size (0 = byte, 1 = short, 2 = long) */ \
	  bs,                   /* bitsize */ \
	  pr,                   /* pc_relative */ \
	  bp,                   /* bitpos */ \
	  co,			/* complain_on_overflow */	       \
	  bfd_elf_generic_reloc,/* special_function */ \
	  name,                 /* name */ \
	  FALSE,                /* partial_inplace */ \
	  sm,                   /* src_mask */ \
	  dm,                   /* dst_mask */ \
	  pr)                   /* pcrel_offset */

  /* This reloc does nothing.  */
  AHOW (R_EPIPHANY_NONE,    0, 3,0, FALSE, 0, complain_overflow_dont,     "R_EPIPHANY_NONE",        0,          0),

  /* 8 bit absolute (not likely) */
  AHOW (R_EPIPHANY_8,       0, 0, 8, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_8",      0x000000ff, 0x000000ff),
  /* 16 bit absolute */
  AHOW (R_EPIPHANY_16,      0, 1,16, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_16",     0x0000ffff, 0x00ff1fe0),
  /* A 32 bit absolute relocation.  */
  AHOW (R_EPIPHANY_32,      0, 2,32, FALSE, 0, complain_overflow_dont,     "R_EPIPHANY_32",     0xffffffff, 0xffffffff),

  /*  8 bit relative relocation */
  HOWTO ( R_EPIPHANY_8_PCREL,  0, 0,  8, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_EPIPHANY_8_PCREL", FALSE, 0x000000ff, 0x000000ff, FALSE),
  /* 16 bit relative relocation */
  HOWTO ( R_EPIPHANY_16_PCREL, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_EPIPHANY_8_PCREL", FALSE, 0x000000ff, 0x000000ff, FALSE),
  /* 32 bit relative relocation */
  HOWTO ( R_EPIPHANY_32_PCREL, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_EPIPHANY_8_PCREL", FALSE, 0x000000ff, 0x000000ff, FALSE),

  /* 8 bit pc-relative relocation */
  AHOW (R_EPIPHANY_SIMM8,   1, 0, 8,  TRUE, 8, complain_overflow_signed,   "R_EPIPHANY_SIMM8",   0x000000ff, 0x0000ff00),
  /* 24 bit pc-relative relocation */
  AHOW (R_EPIPHANY_SIMM24,  1, 2,24,  TRUE, 8, complain_overflow_signed,   "R_EPIPHANY_SIMM24",  0x00ffffff, 0xffffff00),

  /* %HIGH(EA) */
  AHOW (R_EPIPHANY_HIGH,    0, 2,16, FALSE, 0, complain_overflow_dont,     "R_EPIPHANY_HIGH",    0x0ff01fe0, 0x0ff01fe0),

  /* %LOW(EA) */
  AHOW (R_EPIPHANY_LOW,     0, 2,16, FALSE, 0, complain_overflow_dont,	"R_EPIPHANY_LOW",     0x0ff01fe0, 0x0ff01fe0),

  /* simm11 */
  AHOW (R_EPIPHANY_SIMM11,  0, 2,11, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_SIMM11",  0x00ff0380, 0x00ff0380),
  /* imm12 - sign-magnitude */
  AHOW (R_EPIPHANY_IMM11,   0, 2,11, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_IMM12",   0x00ff0380, 0x00ff0380),
  /* imm8 */
  AHOW (R_EPIPHANY_IMM8,    0, 1, 8, FALSE, 8, complain_overflow_signed,   "R_EPIPHANY_IMM8",    0x0000ff00, 0x0000ff00)


};
#undef AHOW

/* Map BFD reloc types to EPIPHANY ELF reloc types.  */

static reloc_howto_type *
epiphany_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
			    bfd_reloc_code_real_type code)
{
  /* Note that the epiphany_elf_howto_table is indxed 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/epiphany.h.  */

  switch (code)
    {
    case BFD_RELOC_NONE:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_NONE];

    case BFD_RELOC_EPIPHANY_SIMM8:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_SIMM8];
    case BFD_RELOC_EPIPHANY_SIMM24:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_SIMM24];

    case BFD_RELOC_8_PCREL:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_8_PCREL];
    case BFD_RELOC_16_PCREL:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_16_PCREL];
    case BFD_RELOC_32_PCREL:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_32_PCREL];

    case BFD_RELOC_8:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_8];
    case BFD_RELOC_16:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_16];
    case BFD_RELOC_32:
      return &epiphany_elf_howto_table[ (int) R_EPIPHANY_32];

    case BFD_RELOC_EPIPHANY_HIGH:
      return & epiphany_elf_howto_table[ (int) R_EPIPHANY_HIGH];
    case BFD_RELOC_EPIPHANY_LOW:
      return & epiphany_elf_howto_table[ (int) R_EPIPHANY_LOW];

    case BFD_RELOC_EPIPHANY_SIMM11:
      return & epiphany_elf_howto_table[ (int) R_EPIPHANY_SIMM11];
    case BFD_RELOC_EPIPHANY_IMM11:
      return & epiphany_elf_howto_table[ (int) R_EPIPHANY_IMM11];

    case BFD_RELOC_EPIPHANY_IMM8:
      return & epiphany_elf_howto_table[ (int) R_EPIPHANY_IMM8];

    default:
      /* Pacify gcc -Wall.  */
      return NULL;
    }
  return NULL;
}

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

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

  return NULL;
}

#define PAGENO(ABSADDR) ((ABSADDR) & 0xFFFFC000)
#define BASEADDR(SEC)	((SEC)->output_section->vma + (SEC)->output_offset)

/* This function handles relaxing for the epiphany.
   Dummy placeholder for future optimizations.  */

static bfd_boolean
epiphany_elf_relax_section (bfd *abfd, asection *sec,
			    struct bfd_link_info *link_info,
			    bfd_boolean *again)
{
  Elf_Internal_Shdr *symtab_hdr;
  Elf_Internal_Rela *internal_relocs;
  bfd_byte *contents = NULL;
  Elf_Internal_Sym *isymbuf = NULL;
  static asection * first_section = NULL;
  static unsigned long search_addr;
  static unsigned long page_start = 0;
  static unsigned long page_end = 0;
  static unsigned int pass = 0;
  static bfd_boolean new_pass = FALSE;
  static bfd_boolean changed = FALSE;
  struct misc misc ATTRIBUTE_UNUSED;
  asection *stab;

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

  if (first_section == NULL)
    {
      epiphany_relaxed = TRUE;
      first_section = sec;
    }

  if (first_section == sec)
    {
      pass++;
      new_pass = TRUE;
    }

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

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;

  internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
					       link_info->keep_memory);
  if (internal_relocs == NULL)
    goto error_return;

  /* Make sure the stac.rela stuff gets read in.  */
  stab = bfd_get_section_by_name (abfd, ".stab");

  if (stab)
    {
      /* So stab does exits.  */
      Elf_Internal_Rela * irelbase ATTRIBUTE_UNUSED;

      irelbase = _bfd_elf_link_read_relocs (abfd, stab, NULL, NULL,
					    link_info->keep_memory);
    }

  /* Get section contents cached copy if it exists.  */
  if (contents == NULL)
    {
      /* Get cached copy if it exists.  */
      if (elf_section_data (sec)->this_hdr.contents != NULL)
	contents = elf_section_data (sec)->this_hdr.contents;
      else
	{
	  /* Go get them off disk.  */
	  if (!bfd_malloc_and_get_section (abfd, sec, &contents))
	    goto error_return;
	}
    }

  /* Read this BFD's symbols cached copy if it exists.  */
  if (isymbuf == NULL && symtab_hdr->sh_info != 0)
    {
      isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
      if (isymbuf == NULL)
	isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
					symtab_hdr->sh_info, 0,
					NULL, NULL, NULL);
      if (isymbuf == NULL)
	goto error_return;
    }

  misc.symtab_hdr = symtab_hdr;
  misc.isymbuf = isymbuf;
  misc.irelbase = internal_relocs;
  misc.contents = contents;

  /* This is where all the relaxation actually get done.  */
  if ((pass == 1) || (new_pass && !changed))
    {
      /* On the first pass we simply search for the lowest page that
	 we havn't relaxed yet. Note that the pass count is reset
	 each time a page is complete in order to move on to the next page.
	 If we can't find any more pages then we are finished.  */
      if (new_pass)
	{
	  pass = 1;
	  new_pass = FALSE;
	  changed = TRUE; /* Pre-initialize to break out of pass 1.  */
	  search_addr = 0xFFFFFFFF;
	}

      if ((BASEADDR (sec) + sec->size < search_addr)
	  && (BASEADDR (sec) + sec->size > page_end))
	{
	  if (BASEADDR (sec) <= page_end)
	    search_addr = page_end + 1;
	  else
	    search_addr = BASEADDR (sec);

	  /* Found a page => more work to do.  */
	  *again = TRUE;
	}
    }
  else
    {
      if (new_pass)
	{
	  new_pass = FALSE;
	  changed = FALSE;
	  page_start = PAGENO (search_addr);
	  page_end = page_start | 0x00003FFF;
	}

      /* Only process sections in range.  */
      if ((BASEADDR (sec) + sec->size >= page_start)
	  && (BASEADDR (sec) <= page_end))
	{
#if 0
	  if (!epiphany_elf_relax_section_page (abfd, sec, &changed, &misc,
						page_start, page_end))
#endif
	    return FALSE;
	}
      *again = TRUE;
    }

  /* Perform some house keeping after relaxing the section.  */

  if (isymbuf != NULL
      && symtab_hdr->contents != (unsigned char *) isymbuf)
    {
      if (! link_info->keep_memory)
	free (isymbuf);
      else
	symtab_hdr->contents = (unsigned char *) isymbuf;
    }

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

  if (internal_relocs != NULL
      && elf_section_data (sec)->relocs != internal_relocs)
    free (internal_relocs);

  return TRUE;

 error_return:
  if (isymbuf != NULL
      && symtab_hdr->contents != (unsigned char *) isymbuf)
    free (isymbuf);
  if (contents != NULL
      && elf_section_data (sec)->this_hdr.contents != contents)
    free (contents);
  if (internal_relocs != NULL
      && elf_section_data (sec)->relocs != internal_relocs)
    free (internal_relocs);
  return FALSE;
}

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

static void
epiphany_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
			     arelent * cache_ptr,
			     Elf_Internal_Rela * dst)
{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (dst->r_info);
  if (r_type >= (unsigned int) R_EPIPHANY_max)
    {
      _bfd_error_handler (_("%B: invalid Epiphany reloc number: %d"), abfd, r_type);
      r_type = 0;
    }
  cache_ptr->howto = & epiphany_elf_howto_table [r_type];
}

/* Perform a single relocation.
   By default we use the standard BFD routines.  */

static bfd_reloc_status_type
epiphany_final_link_relocate (reloc_howto_type *  howto,
			      bfd *               input_bfd,
			      asection *          input_section,
			      bfd_byte *          contents,
			      Elf_Internal_Rela * rel,
			      bfd_vma             relocation)
{
  switch (howto->type)
    {
      /* Handle 16 bit immediates.  */
    case R_EPIPHANY_HIGH:
      relocation += rel->r_addend;
      relocation >>= 16;
      goto common;

    case R_EPIPHANY_LOW:
      relocation += rel->r_addend;
    common:
      relocation = ((relocation & 0xff00L) << 12)
	| ((relocation & 0x00ffL) << 5);
      /* Sanity check the address.  */
      if (rel->r_offset > bfd_get_section_limit (input_bfd, input_section))
	return bfd_reloc_outofrange;

      return _bfd_relocate_contents (howto, input_bfd, relocation,
				     contents + rel->r_offset);

    case R_EPIPHANY_SIMM11:
      relocation += rel->r_addend;
      /* Check signed overflow.  */
      if ((int)relocation > 1023 || (int)relocation < -1024)
	return bfd_reloc_outofrange;
      goto disp11;

    case R_EPIPHANY_IMM11:
      relocation += rel->r_addend;
      if ((unsigned int) relocation > 0x7ff)
	return bfd_reloc_outofrange;
      /* Fall through.  */
    disp11:
      relocation = (((relocation & 7) << 5)
		    | ((relocation & 0x7f8 ) << 13));
      return _bfd_relocate_contents (howto, input_bfd, relocation,
				     contents + rel->r_offset);

      /* Pass others through.  */
    default:
      break;
    }

  /* Only install relocation if above tests did not disqualify it.  */
  return _bfd_final_link_relocate (howto, input_bfd, input_section,
				   contents, rel->r_offset,
				   relocation, rel->r_addend);
}

/* Relocate an EPIPHANY ELF section.

   The RELOCATE_SECTION function is called by the new ELF backend linker
   to handle the relocations for a section.

   The relocs are always passed as Rela structures; if the section
   actually uses Rel structures, the r_addend field will always be
   zero.

   This function is responsible for adjusting the section contents as
   necessary, and (if using Rela relocs and generating a relocatable
   output file) adjusting the reloc addend as necessary.

   This function does not have to worry about setting the reloc
   address or the reloc symbol index.

   LOCAL_SYMS is a pointer to the swapped in local symbols.

   LOCAL_SECTIONS is an array giving the section in the input file
   corresponding to the st_shndx field of each local symbol.

   The global hash table entry for the global symbols can be found
   via elf_sym_hashes (input_bfd).

   When generating relocatable output, this function must handle
   STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
   going to be the section symbol corresponding to the output
   section, which means that the addend must be adjusted
   accordingly.  */

static bfd_boolean
epiphany_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
			       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 ATTRIBUTE_UNUSED;

      r_type = ELF32_R_TYPE (rel->r_info);
      r_symndx = ELF32_R_SYM (rel->r_info);
      howto  = epiphany_elf_howto_table + ELF32_R_TYPE (rel->r_info);
      h      = NULL;
      sym    = NULL;
      sec    = NULL;

      if (r_symndx < symtab_hdr->sh_info)
	{
	  sym = local_syms + r_symndx;
	  sec = local_sections [r_symndx];
	  relocation = BASEADDR (sec) + sym->st_value;

	  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 warned ATTRIBUTE_UNUSED;
	  bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
	  bfd_boolean ignored ATTRIBUTE_UNUSED;

	  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))
	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
					 rel, 1, relend, howto, 0, contents);

      if (bfd_link_relocatable (info))
	continue;

      /* Finally, the sole EPIPHANY-specific part.  */
      r = epiphany_final_link_relocate (howto, input_bfd, input_section,
				     contents, rel, relocation);

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

	      /* This is how epiphany_final_link_relocate tells us of a
		 non-kosher reference between insn & data address spaces.  */
	    case bfd_reloc_notsupported:
	      if (sym != NULL) /* Only if it's not an unresolved symbol.  */
		 msg = _("unsupported relocation between data/insn address spaces");
	      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;
}

/* We only have a little-endian target.  */
#define TARGET_LITTLE_SYM	 epiphany_elf32_vec
#define TARGET_LITTLE_NAME  "elf32-epiphany"

#define ELF_ARCH	 bfd_arch_epiphany
#define ELF_MACHINE_CODE EM_ADAPTEVA_EPIPHANY

#define ELF_MAXPAGESIZE  0x8000 /* No pages on the EPIPHANY.  */

#define elf_info_to_howto_rel			NULL
#define elf_info_to_howto			epiphany_info_to_howto_rela

#define elf_backend_can_gc_sections     	1
#define elf_backend_rela_normal			1
#define elf_backend_relocate_section		epiphany_elf_relocate_section

#define elf_symbol_leading_char			'_'
#define bfd_elf32_bfd_reloc_type_lookup		epiphany_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup		epiphany_reloc_name_lookup
#define bfd_elf32_bfd_relax_section		epiphany_elf_relax_section

#include "elf32-target.h"