bfd/elf32-epiphany.c

   1 /* Adapteva epiphany specific support for 32-bit ELF
   2    Copyright (C) 2000-2018 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 (bfd_link_relocatable (link_info)
 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       /* xgettext:c-format */
 376       _bfd_error_handler (_("%B: invalid Epiphany reloc number: %d"), abfd, r_type);
 377       r_type = 0;
 378     }
 379   cache_ptr->howto = & epiphany_elf_howto_table [r_type];
 380 }
 381
 382 /* Perform a single relocation.
 383    By default we use the standard BFD routines.  */
 384
 385 static bfd_reloc_status_type
 386 epiphany_final_link_relocate (reloc_howto_type *  howto,
 387                               bfd *               input_bfd,
 388                               asection *          input_section,
 389                               bfd_byte *          contents,
 390                               Elf_Internal_Rela * rel,
 391                               bfd_vma             relocation)
 392 {
 393   switch (howto->type)
 394     {
 395       /* Handle 16 bit immediates.  */
 396     case R_EPIPHANY_HIGH:
 397       relocation += rel->r_addend;
 398       relocation >>= 16;
 399       goto common;
 400
 401     case R_EPIPHANY_LOW:
 402       relocation += rel->r_addend;
 403     common:
 404       relocation = ((relocation & 0xff00L) << 12)
 405         | ((relocation & 0x00ffL) << 5);
 406       /* Sanity check the address.  */
 407       if (rel->r_offset > bfd_get_section_limit (input_bfd, input_section))
 408         return bfd_reloc_outofrange;
 409
 410       return _bfd_relocate_contents (howto, input_bfd, relocation,
 411                                      contents + rel->r_offset);
 412
 413     case R_EPIPHANY_SIMM11:
 414       relocation += rel->r_addend;
 415       /* Check signed overflow.  */
 416       if ((int)relocation > 1023 || (int)relocation < -1024)
 417         return bfd_reloc_outofrange;
 418       goto disp11;
 419
 420     case R_EPIPHANY_IMM11:
 421       relocation += rel->r_addend;
 422       if ((unsigned int) relocation > 0x7ff)
 423         return bfd_reloc_outofrange;
 424       /* Fall through.  */
 425     disp11:
 426       relocation = (((relocation & 7) << 5)
 427                     | ((relocation & 0x7f8 ) << 13));
 428       return _bfd_relocate_contents (howto, input_bfd, relocation,
 429                                      contents + rel->r_offset);
 430
 431       /* Pass others through.  */
 432     default:
 433       break;
 434     }
 435
 436   /* Only install relocation if above tests did not disqualify it.  */
 437   return _bfd_final_link_relocate (howto, input_bfd, input_section,
 438                                    contents, rel->r_offset,
 439                                    relocation, rel->r_addend);
 440 }
 441
 442 /* Relocate an EPIPHANY ELF section.
 443
 444    The RELOCATE_SECTION function is called by the new ELF backend linker
 445    to handle the relocations for a section.
 446
 447    The relocs are always passed as Rela structures; if the section
 448    actually uses Rel structures, the r_addend field will always be
 449    zero.
 450
 451    This function is responsible for adjusting the section contents as
 452    necessary, and (if using Rela relocs and generating a relocatable
 453    output file) adjusting the reloc addend as necessary.
 454
 455    This function does not have to worry about setting the reloc
 456    address or the reloc symbol index.
 457
 458    LOCAL_SYMS is a pointer to the swapped in local symbols.
 459
 460    LOCAL_SECTIONS is an array giving the section in the input file
 461    corresponding to the st_shndx field of each local symbol.
 462
 463    The global hash table entry for the global symbols can be found
 464    via elf_sym_hashes (input_bfd).
 465
 466    When generating relocatable output, this function must handle
 467    STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 468    going to be the section symbol corresponding to the output
 469    section, which means that the addend must be adjusted
 470    accordingly.  */
 471
 472 static bfd_boolean
 473 epiphany_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
 474                                struct bfd_link_info *info,
 475                                bfd *input_bfd,
 476                                asection *input_section,
 477                                bfd_byte *contents,
 478                                Elf_Internal_Rela *relocs,
 479                                Elf_Internal_Sym *local_syms,
 480                                asection **local_sections)
 481 {
 482   Elf_Internal_Shdr *symtab_hdr;
 483   struct elf_link_hash_entry **sym_hashes;
 484   Elf_Internal_Rela *rel;
 485   Elf_Internal_Rela *relend;
 486
 487   symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
 488   sym_hashes = elf_sym_hashes (input_bfd);
 489   relend     = relocs + input_section->reloc_count;
 490
 491   for (rel = relocs; rel < relend; rel ++)
 492     {
 493       reloc_howto_type *           howto;
 494       unsigned long                r_symndx;
 495       Elf_Internal_Sym *           sym;
 496       asection *                   sec;
 497       struct elf_link_hash_entry * h;
 498       bfd_vma                      relocation;
 499       bfd_reloc_status_type        r;
 500       const char *                 name = NULL;
 501       int                          r_type ATTRIBUTE_UNUSED;
 502
 503       r_type = ELF32_R_TYPE (rel->r_info);
 504       r_symndx = ELF32_R_SYM (rel->r_info);
 505       howto  = epiphany_elf_howto_table + ELF32_R_TYPE (rel->r_info);
 506       h      = NULL;
 507       sym    = NULL;
 508       sec    = NULL;
 509
 510       if (r_symndx < symtab_hdr->sh_info)
 511         {
 512           sym = local_syms + r_symndx;
 513           sec = local_sections [r_symndx];
 514           relocation = BASEADDR (sec) + sym->st_value;
 515
 516           name = bfd_elf_string_from_elf_section
 517             (input_bfd, symtab_hdr->sh_link, sym->st_name);
 518           name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
 519         }
 520       else
 521         {
 522           bfd_boolean warned ATTRIBUTE_UNUSED;
 523           bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED;
 524           bfd_boolean ignored ATTRIBUTE_UNUSED;
 525
 526           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
 527                                    r_symndx, symtab_hdr, sym_hashes,
 528                                    h, sec, relocation,
 529                                    unresolved_reloc, warned, ignored);
 530
 531           name = h->root.root.string;
 532         }
 533
 534       if (sec != NULL && discarded_section (sec))
 535         RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
 536                                          rel, 1, relend, howto, 0, contents);
 537
 538       if (bfd_link_relocatable (info))
 539         continue;
 540
 541       /* Finally, the sole EPIPHANY-specific part.  */
 542       r = epiphany_final_link_relocate (howto, input_bfd, input_section,
 543                                      contents, rel, relocation);
 544
 545       if (r != bfd_reloc_ok)
 546         {
 547           const char * msg = NULL;
 548
 549           switch (r)
 550             {
 551             case bfd_reloc_overflow:
 552               (*info->callbacks->reloc_overflow)
 553                 (info, (h ? &h->root : NULL), name, howto->name,
 554                  (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
 555               break;
 556
 557             case bfd_reloc_undefined:
 558               (*info->callbacks->undefined_symbol)
 559                 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
 560               break;
 561
 562             case bfd_reloc_outofrange:
 563               msg = _("internal error: out of range error");
 564               break;
 565
 566               /* This is how epiphany_final_link_relocate tells us of a
 567                  non-kosher reference between insn & data address spaces.  */
 568             case bfd_reloc_notsupported:
 569               if (sym != NULL) /* Only if it's not an unresolved symbol.  */
 570                  msg = _("unsupported relocation between data/insn address spaces");
 571               break;
 572
 573             case bfd_reloc_dangerous:
 574               msg = _("internal error: dangerous relocation");
 575               break;
 576
 577             default:
 578               msg = _("internal error: unknown error");
 579               break;
 580             }
 581
 582           if (msg)
 583             (*info->callbacks->warning) (info, msg, name, input_bfd,
 584                                          input_section, rel->r_offset);
 585         }
 586     }
 587
 588   return TRUE;
 589 }
 590
 591 /* We only have a little-endian target.  */
 592 #define TARGET_LITTLE_SYM        epiphany_elf32_vec
 593 #define TARGET_LITTLE_NAME  "elf32-epiphany"
 594
 595 #define ELF_ARCH         bfd_arch_epiphany
 596 #define ELF_MACHINE_CODE EM_ADAPTEVA_EPIPHANY
 597
 598 #define ELF_MAXPAGESIZE  0x8000 /* No pages on the EPIPHANY.  */
 599
 600 #define elf_info_to_howto_rel                   NULL
 601 #define elf_info_to_howto                       epiphany_info_to_howto_rela
 602
 603 #define elf_backend_can_gc_sections             1
 604 #define elf_backend_rela_normal                 1
 605 #define elf_backend_relocate_section            epiphany_elf_relocate_section
 606
 607 #define elf_symbol_leading_char                 '_'
 608 #define bfd_elf32_bfd_reloc_type_lookup         epiphany_reloc_type_lookup
 609 #define bfd_elf32_bfd_reloc_name_lookup         epiphany_reloc_name_lookup
 610 #define bfd_elf32_bfd_relax_section             epiphany_elf_relax_section
 611
 612 #include "elf32-target.h"