bfd/elf32-epiphany.c

   1 /* Adapteva epiphany specific support for 32-bit ELF
   2    Copyright (C) 2000-2015 Free Software Foundation, Inc.
   3    Contributed by Embecosm on behalf of Adapteva, Inc.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "libbfd.h"
  25 #include "elf-bfd.h"
  26 #include "elf/epiphany.h"
  27 #include "libiberty.h"
  28
  29 /* Struct used to pass miscellaneous paramaters which
  30    helps to avoid overly long parameter lists.  */
  31 struct misc
  32 {
  33   Elf_Internal_Shdr *  symtab_hdr;
  34   Elf_Internal_Rela *  irelbase;
  35   bfd_byte *           contents;
  36   Elf_Internal_Sym *   isymbuf;
  37 };
  38
  39 struct epiphany_opcode
  40 {
  41   unsigned short opcode;
  42   unsigned short mask;
  43 };
  44
  45 static bfd_boolean epiphany_relaxed = FALSE;
  46
  47 /* Relocation tables.  */
  48 static reloc_howto_type epiphany_elf_howto_table [] =
  49 {
  50 #define AHOW(t,rs,s,bs,pr,bp,co,name,sm,dm)     \
  51     HOWTO(t,                    /* type */ \
  52           rs,                   /* rightshift */ \
  53           s,                    /* size (0 = byte, 1 = short, 2 = long) */ \
  54           bs,                   /* bitsize */ \
  55           pr,                   /* pc_relative */ \
  56           bp,                   /* bitpos */ \
  57           co,                   /* complain_on_overflow */             \
  58           bfd_elf_generic_reloc,/* special_function */ \
  59           name,                 /* name */ \
  60           FALSE,                /* partial_inplace */ \
  61           sm,                   /* src_mask */ \
  62           dm,                   /* dst_mask */ \
  63           pr)                   /* pcrel_offset */
  64
  65   /* This reloc does nothing.  */
  66   AHOW (R_EPIPHANY_NONE,    0, 3,0, FALSE, 0, complain_overflow_dont,     "R_EPIPHANY_NONE",        0,          0),
  67
  68   /* 8 bit absolute (not likely) */
  69   AHOW (R_EPIPHANY_8,       0, 0, 8, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_8",      0x000000ff, 0x000000ff),
  70   /* 16 bit absolute */
  71   AHOW (R_EPIPHANY_16,      0, 1,16, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_16",     0x0000ffff, 0x00ff1fe0),
  72   /* A 32 bit absolute relocation.  */
  73   AHOW (R_EPIPHANY_32,      0, 2,32, FALSE, 0, complain_overflow_dont,     "R_EPIPHANY_32",     0xffffffff, 0xffffffff),
  74
  75   /*  8 bit relative relocation */
  76   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),
  77   /* 16 bit relative relocation */
  78   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),
  79   /* 32 bit relative relocation */
  80   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),
  81
  82   /* 8 bit pc-relative relocation */
  83   AHOW (R_EPIPHANY_SIMM8,   1, 0, 8,  TRUE, 8, complain_overflow_signed,   "R_EPIPHANY_SIMM8",   0x000000ff, 0x0000ff00),
  84   /* 24 bit pc-relative relocation */
  85   AHOW (R_EPIPHANY_SIMM24,  1, 2,24,  TRUE, 8, complain_overflow_signed,   "R_EPIPHANY_SIMM24",  0x00ffffff, 0xffffff00),
  86
  87   /* %HIGH(EA) */
  88   AHOW (R_EPIPHANY_HIGH,    0, 2,16, FALSE, 0, complain_overflow_dont,     "R_EPIPHANY_HIGH",    0x0ff01fe0, 0x0ff01fe0),
  89
  90   /* %LOW(EA) */
  91   AHOW (R_EPIPHANY_LOW,     0, 2,16, FALSE, 0, complain_overflow_dont,  "R_EPIPHANY_LOW",     0x0ff01fe0, 0x0ff01fe0),
  92
  93   /* simm11 */
  94   AHOW (R_EPIPHANY_SIMM11,  0, 2,11, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_SIMM11",  0x00ff0380, 0x00ff0380),
  95   /* imm12 - sign-magnitude */
  96   AHOW (R_EPIPHANY_IMM11,   0, 2,11, FALSE, 0, complain_overflow_bitfield, "R_EPIPHANY_IMM12",   0x00ff0380, 0x00ff0380),
  97   /* imm8 */
  98   AHOW (R_EPIPHANY_IMM8,    0, 1, 8, FALSE, 8, complain_overflow_signed,   "R_EPIPHANY_IMM8",    0x0000ff00, 0x0000ff00)
  99
 100
 101 };
 102 #undef AHOW
 103
 104 /* Map BFD reloc types to EPIPHANY ELF reloc types.  */
 105
 106 static reloc_howto_type *
 107 epiphany_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
 108                             bfd_reloc_code_real_type code)
 109 {
 110   /* Note that the epiphany_elf_howto_table is indxed by the R_
 111      constants.  Thus, the order that the howto records appear in the
 112      table *must* match the order of the relocation types defined in
 113      include/elf/epiphany.h.  */
 114
 115   switch (code)
 116     {
 117     case BFD_RELOC_NONE:
 118       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_NONE];
 119
 120     case BFD_RELOC_EPIPHANY_SIMM8:
 121       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_SIMM8];
 122     case BFD_RELOC_EPIPHANY_SIMM24:
 123       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_SIMM24];
 124
 125     case BFD_RELOC_8_PCREL:
 126       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_8_PCREL];
 127     case BFD_RELOC_16_PCREL:
 128       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_16_PCREL];
 129     case BFD_RELOC_32_PCREL:
 130       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_32_PCREL];
 131
 132     case BFD_RELOC_8:
 133       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_8];
 134     case BFD_RELOC_16:
 135       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_16];
 136     case BFD_RELOC_32:
 137       return &epiphany_elf_howto_table[ (int) R_EPIPHANY_32];
 138
 139     case BFD_RELOC_EPIPHANY_HIGH:
 140       return & epiphany_elf_howto_table[ (int) R_EPIPHANY_HIGH];
 141     case BFD_RELOC_EPIPHANY_LOW:
 142       return & epiphany_elf_howto_table[ (int) R_EPIPHANY_LOW];
 143
 144     case BFD_RELOC_EPIPHANY_SIMM11:
 145       return & epiphany_elf_howto_table[ (int) R_EPIPHANY_SIMM11];
 146     case BFD_RELOC_EPIPHANY_IMM11:
 147       return & epiphany_elf_howto_table[ (int) R_EPIPHANY_IMM11];
 148
 149     case BFD_RELOC_EPIPHANY_IMM8:
 150       return & epiphany_elf_howto_table[ (int) R_EPIPHANY_IMM8];
 151
 152     default:
 153       /* Pacify gcc -Wall.  */
 154       return NULL;
 155     }
 156   return NULL;
 157 }
 158
 159 static reloc_howto_type *
 160 epiphany_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
 161 {
 162   unsigned int i;
 163
 164   for (i = 0; i < ARRAY_SIZE (epiphany_elf_howto_table); i++)
 165     if (epiphany_elf_howto_table[i].name != NULL
 166         && strcasecmp (epiphany_elf_howto_table[i].name, r_name) == 0)
 167       return &epiphany_elf_howto_table[i];
 168
 169   return NULL;
 170 }
 171
 172 #define PAGENO(ABSADDR) ((ABSADDR) & 0xFFFFC000)
 173 #define BASEADDR(SEC)   ((SEC)->output_section->vma + (SEC)->output_offset)
 174
 175 /* This function handles relaxing for the epiphany.
 176    Dummy placeholder for future optimizations.  */
 177
 178 static bfd_boolean
 179 epiphany_elf_relax_section (bfd *abfd, asection *sec,
 180                             struct bfd_link_info *link_info,
 181                             bfd_boolean *again)
 182 {
 183   Elf_Internal_Shdr *symtab_hdr;
 184   Elf_Internal_Rela *internal_relocs;
 185   bfd_byte *contents = NULL;
 186   Elf_Internal_Sym *isymbuf = NULL;
 187   static asection * first_section = NULL;
 188   static unsigned long search_addr;
 189   static unsigned long page_start = 0;
 190   static unsigned long page_end = 0;
 191   static unsigned int pass = 0;
 192   static bfd_boolean new_pass = FALSE;
 193   static bfd_boolean changed = FALSE;
 194   struct misc misc ATTRIBUTE_UNUSED;
 195   asection *stab;
 196
 197   /* Assume nothing changes.  */
 198   *again = FALSE;
 199
 200   if (first_section == NULL)
 201     {
 202       epiphany_relaxed = TRUE;
 203       first_section = sec;
 204     }
 205
 206   if (first_section == sec)
 207     {
 208       pass++;
 209       new_pass = TRUE;
 210     }
 211
 212   /* We don't have to do anything for a relocatable link,
 213      if this section does not have relocs, or if this is
 214      not a code section.  */
 215   if (link_info->relocatable
 216       || (sec->flags & SEC_RELOC) == 0
 217       || sec->reloc_count == 0
 218       || (sec->flags & SEC_CODE) == 0)
 219     return TRUE;
 220
 221   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
 222
 223   internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
 224                                                link_info->keep_memory);
 225   if (internal_relocs == NULL)
 226     goto error_return;
 227
 228   /* Make sure the stac.rela stuff gets read in.  */
 229   stab = bfd_get_section_by_name (abfd, ".stab");
 230
 231   if (stab)
 232     {
 233       /* So stab does exits.  */
 234       Elf_Internal_Rela * irelbase ATTRIBUTE_UNUSED;
 235
 236       irelbase = _bfd_elf_link_read_relocs (abfd, stab, NULL, NULL,
 237                                             link_info->keep_memory);
 238     }
 239
 240   /* Get section contents cached copy if it exists.  */
 241   if (contents == NULL)
 242     {
 243       /* Get cached copy if it exists.  */
 244       if (elf_section_data (sec)->this_hdr.contents != NULL)
 245         contents = elf_section_data (sec)->this_hdr.contents;
 246       else
 247         {
 248           /* Go get them off disk.  */
 249           if (!bfd_malloc_and_get_section (abfd, sec, &contents))
 250             goto error_return;
 251         }
 252     }
 253
 254   /* Read this BFD's symbols cached copy if it exists.  */
 255   if (isymbuf == NULL && symtab_hdr->sh_info != 0)
 256     {
 257       isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
 258       if (isymbuf == NULL)
 259         isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
 260                                         symtab_hdr->sh_info, 0,
 261                                         NULL, NULL, NULL);
 262       if (isymbuf == NULL)
 263         goto error_return;
 264     }
 265
 266   misc.symtab_hdr = symtab_hdr;
 267   misc.isymbuf = isymbuf;
 268   misc.irelbase = internal_relocs;
 269   misc.contents = contents;
 270
 271   /* This is where all the relaxation actually get done.  */
 272   if ((pass == 1) || (new_pass && !changed))
 273     {
 274       /* On the first pass we simply search for the lowest page that
 275          we havn't relaxed yet. Note that the pass count is reset
 276          each time a page is complete in order to move on to the next page.
 277          If we can't find any more pages then we are finished.  */
 278       if (new_pass)
 279         {
 280           pass = 1;
 281           new_pass = FALSE;
 282           changed = TRUE; /* Pre-initialize to break out of pass 1.  */
 283           search_addr = 0xFFFFFFFF;
 284         }
 285
 286       if ((BASEADDR (sec) + sec->size < search_addr)
 287           && (BASEADDR (sec) + sec->size > page_end))
 288         {
 289           if (BASEADDR (sec) <= page_end)
 290             search_addr = page_end + 1;
 291           else
 292             search_addr = BASEADDR (sec);
 293
 294           /* Found a page => more work to do.  */
 295           *again = TRUE;
 296         }
 297     }
 298   else
 299     {
 300       if (new_pass)
 301         {
 302           new_pass = FALSE;
 303           changed = FALSE;
 304           page_start = PAGENO (search_addr);
 305           page_end = page_start | 0x00003FFF;
 306         }
 307
 308       /* Only process sections in range.  */
 309       if ((BASEADDR (sec) + sec->size >= page_start)
 310           && (BASEADDR (sec) <= page_end))
 311         {
 312 #if 0
 313           if (!epiphany_elf_relax_section_page (abfd, sec, &changed, &misc,
 314                                                 page_start, page_end))
 315 #endif
 316             return FALSE;
 317         }
 318       *again = TRUE;
 319     }
 320
 321   /* Perform some house keeping after relaxing the section.  */
 322
 323   if (isymbuf != NULL
 324       && symtab_hdr->contents != (unsigned char *) isymbuf)
 325     {
 326       if (! link_info->keep_memory)
 327         free (isymbuf);
 328       else
 329         symtab_hdr->contents = (unsigned char *) isymbuf;
 330     }
 331
 332   if (contents != NULL
 333       && elf_section_data (sec)->this_hdr.contents != contents)
 334     {
 335       if (! link_info->keep_memory)
 336         free (contents);
 337       else
 338         {
 339           /* Cache the section contents for elf_link_input_bfd.  */
 340           elf_section_data (sec)->this_hdr.contents = contents;
 341         }
 342     }
 343
 344   if (internal_relocs != NULL
 345       && elf_section_data (sec)->relocs != internal_relocs)
 346     free (internal_relocs);
 347
 348   return TRUE;
 349
 350  error_return:
 351   if (isymbuf != NULL
 352       && symtab_hdr->contents != (unsigned char *) isymbuf)
 353     free (isymbuf);
 354   if (contents != NULL
 355       && elf_section_data (sec)->this_hdr.contents != contents)
 356     free (contents);
 357   if (internal_relocs != NULL
 358       && elf_section_data (sec)->relocs != internal_relocs)
 359     free (internal_relocs);
 360   return FALSE;
 361 }
 362
 363 /* Set the howto pointer for a EPIPHANY ELF reloc.  */
 364
 365 static void
 366 epiphany_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
 367                              arelent * cache_ptr,
 368                              Elf_Internal_Rela * dst)
 369 {
 370   unsigned int r_type;
 371
 372   r_type = ELF32_R_TYPE (dst->r_info);
 373   if (r_type >= (unsigned int) R_EPIPHANY_max)
 374     {
 375       _bfd_error_handler (_("%B: invalid Epiphany reloc number: %d"), abfd, r_type);
 376       r_type = 0;
 377     }
 378   cache_ptr->howto = & epiphany_elf_howto_table [r_type];
 379 }
 380
 381 /* Perform a single relocation.
 382    By default we use the standard BFD routines.  */
 383
 384 static bfd_reloc_status_type
 385 epiphany_final_link_relocate (reloc_howto_type *  howto,
 386                               bfd *               input_bfd,
 387                               asection *          input_section,
 388                               bfd_byte *          contents,
 389                               Elf_Internal_Rela * rel,
 390                               bfd_vma             relocation)
 391 {
 392   switch (howto->type)
 393     {
 394       /* Handle 16 bit immediates.  */
 395     case R_EPIPHANY_HIGH:
 396       relocation += rel->r_addend;
 397       relocation >>= 16;
 398       goto common;
 399
 400     case R_EPIPHANY_LOW:
 401       relocation += rel->r_addend;
 402     common:
 403       relocation = ((relocation & 0xff00L) << 12)
 404         | ((relocation & 0x00ffL) << 5);
 405       /* Sanity check the address.  */
 406       if (rel->r_offset > bfd_get_section_limit (input_bfd, input_section))
 407         return bfd_reloc_outofrange;
 408
 409       return _bfd_relocate_contents (howto, input_bfd, relocation,
 410                                      contents + rel->r_offset);
 411
 412     case R_EPIPHANY_SIMM11:
 413       relocation += rel->r_addend;
 414       /* Check signed overflow.  */
 415       if ((int)relocation > 1023 || (int)relocation < -1024)
 416         return bfd_reloc_outofrange;
 417       goto disp11;
 418
 419     case R_EPIPHANY_IMM11:
 420       relocation += rel->r_addend;
 421       if ((unsigned int) relocation > 0x7ff)
 422         return bfd_reloc_outofrange;
 423     disp11:
 424       relocation = ((relocation & 7) << 5)
 425         || ((relocation & 0x7f8 )  << 13);
 426       return _bfd_relocate_contents (howto, input_bfd, relocation,
 427                                      contents + rel->r_offset);
 428
 429       /* Pass others through.  */
 430     default:
 431       break;
 432     }
 433
 434   /* Only install relocation if above tests did not disqualify it.  */
 435   return _bfd_final_link_relocate (howto, input_bfd, input_section,
 436                                    contents, rel->r_offset,
 437                                    relocation, rel->r_addend);
 438 }
 439
 440 /* Relocate an EPIPHANY ELF section.
 441
 442    The RELOCATE_SECTION function is called by the new ELF backend linker
 443    to handle the relocations for a section.
 444
 445    The relocs are always passed as Rela structures; if the section
 446    actually uses Rel structures, the r_addend field will always be
 447    zero.
 448
 449    This function is responsible for adjusting the section contents as
 450    necessary, and (if using Rela relocs and generating a relocatable
 451    output file) adjusting the reloc addend as necessary.
 452
 453    This function does not have to worry about setting the reloc
 454    address or the reloc symbol index.
 455
 456    LOCAL_SYMS is a pointer to the swapped in local symbols.
 457
 458    LOCAL_SECTIONS is an array giving the section in the input file
 459    corresponding to the st_shndx field of each local symbol.
 460
 461    The global hash table entry for the global symbols can be found
 462    via elf_sym_hashes (input_bfd).
 463
 464    When generating relocatable output, this function must handle
 465    STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 466    going to be the section symbol corresponding to the output
 467    section, which means that the addend must be adjusted
 468    accordingly.  */
 469
 470 static bfd_boolean
 471 epiphany_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
 472                                struct bfd_link_info *info,
 473                                bfd *input_bfd,
 474                                asection *input_section,
 475                                bfd_byte *contents,
 476                                Elf_Internal_Rela *relocs,
 477                                Elf_Internal_Sym *local_syms,
 478                                asection **local_sections)
 479 {
 480   Elf_Internal_Shdr *symtab_hdr;
 481   struct elf_link_hash_entry **sym_hashes;
 482   Elf_Internal_Rela *rel;
 483   Elf_Internal_Rela *relend;
 484
 485   symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
 486   sym_hashes = elf_sym_hashes (input_bfd);
 487   relend     = relocs + input_section->reloc_count;
 488
 489   for (rel = relocs; rel < relend; rel ++)
 490     {
 491       reloc_howto_type *           howto;
 492       unsigned long                r_symndx;
 493       Elf_Internal_Sym *           sym;
 494       asection *                   sec;
 495       struct elf_link_hash_entry * h;
 496       bfd_vma                      relocation;
 497       bfd_reloc_status_type        r;
 498       const char *                 name = NULL;
 499       int                          r_type ATTRIBUTE_UNUSED;
 500
 501       r_type = ELF32_R_TYPE (rel->r_info);
 502       r_symndx = ELF32_R_SYM (rel->r_info);
 503       howto  = epiphany_elf_howto_table + ELF32_R_TYPE (rel->r_info);
 504       h      = NULL;
 505       sym    = NULL;
 506       sec    = NULL;
 507
 508       if (r_symndx < symtab_hdr->sh_info)
 509         {
 510           sym = local_syms + r_symndx;
 511           sec = local_sections [r_symndx];
 512           relocation = BASEADDR (sec) + sym->st_value;
 513
 514           name = bfd_elf_string_from_elf_section
 515             (input_bfd, symtab_hdr->sh_link, sym->st_name);
 516           name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
 517         }
 518       else
 519         {
 520           bfd_boolean warned ATTRIBUTE_UNUSED;
 521           bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
 522           bfd_boolean ignored ATTRIBUTE_UNUSED;
 523
 524           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
 525                                    r_symndx, symtab_hdr, sym_hashes,
 526                                    h, sec, relocation,
 527                                    unresolved_reloc, warned, ignored);
 528
 529           name = h->root.root.string;
 530         }
 531
 532       if (sec != NULL && discarded_section (sec))
 533         RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
 534                                          rel, 1, relend, howto, 0, contents);
 535
 536       if (info->relocatable)
 537         continue;
 538
 539       /* Finally, the sole EPIPHANY-specific part.  */
 540       r = epiphany_final_link_relocate (howto, input_bfd, input_section,
 541                                      contents, rel, relocation);
 542
 543       if (r != bfd_reloc_ok)
 544         {
 545           const char * msg = NULL;
 546
 547           switch (r)
 548             {
 549             case bfd_reloc_overflow:
 550               r = info->callbacks->reloc_overflow
 551                 (info, (h ? &h->root : NULL), name, howto->name,
 552                  (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
 553               break;
 554
 555             case bfd_reloc_undefined:
 556               r = info->callbacks->undefined_symbol
 557                 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
 558               break;
 559
 560             case bfd_reloc_outofrange:
 561               msg = _("internal error: out of range error");
 562               break;
 563
 564               /* This is how epiphany_final_link_relocate tells us of a
 565                  non-kosher reference between insn & data address spaces.  */
 566             case bfd_reloc_notsupported:
 567               if (sym != NULL) /* Only if it's not an unresolved symbol.  */
 568                  msg = _("unsupported relocation between data/insn address spaces");
 569               break;
 570
 571             case bfd_reloc_dangerous:
 572               msg = _("internal error: dangerous relocation");
 573               break;
 574
 575             default:
 576               msg = _("internal error: unknown error");
 577               break;
 578             }
 579
 580           if (msg)
 581             r = info->callbacks->warning
 582               (info, msg, name, input_bfd, input_section, rel->r_offset);
 583
 584           if (! r)
 585             return FALSE;
 586         }
 587     }
 588
 589   return TRUE;
 590 }
 591
 592 /* We only have a little-endian target.  */
 593 #define TARGET_LITTLE_SYM        epiphany_elf32_vec
 594 #define TARGET_LITTLE_NAME  "elf32-epiphany"
 595
 596 #define ELF_ARCH         bfd_arch_epiphany
 597 #define ELF_MACHINE_CODE EM_ADAPTEVA_EPIPHANY
 598
 599 #define ELF_MAXPAGESIZE  0x8000 /* No pages on the EPIPHANY.  */
 600
 601 #define elf_info_to_howto_rel                   NULL
 602 #define elf_info_to_howto                       epiphany_info_to_howto_rela
 603
 604 #define elf_backend_can_gc_sections             1
 605 #define elf_backend_rela_normal                 1
 606 #define elf_backend_relocate_section            epiphany_elf_relocate_section
 607
 608 #define elf_symbol_leading_char                 '_'
 609 #define bfd_elf32_bfd_reloc_type_lookup         epiphany_reloc_type_lookup
 610 #define bfd_elf32_bfd_reloc_name_lookup         epiphany_reloc_name_lookup
 611 #define bfd_elf32_bfd_relax_section             epiphany_elf_relax_section
 612
 613 #include "elf32-target.h"