bfd/elf32-openrisc.c

   1 /* OpenRISC-specific support for 32-bit ELF.
   2    Copyright 2001, 2002 Free Software Foundation, Inc.
   3    Contributed by Johan Rydberg, jrydberg@opencores.org
   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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24 #include "elf-bfd.h"
  25 #include "elf/openrisc.h"
  26 #include "libiberty.h"
  27
  28 /* Forward declarations.  */
  29
  30 static reloc_howto_type *openrisc_reloc_type_lookup
  31   PARAMS ((bfd * , bfd_reloc_code_real_type));
  32 static void openrisc_info_to_howto_rela
  33   PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
  34 static boolean openrisc_elf_relocate_section
  35   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  36            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
  37 static bfd_reloc_status_type openrisc_final_link_relocate
  38   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
  39            Elf_Internal_Rela *, bfd_vma));
  40 static boolean openrisc_elf_gc_sweep_hook
  41   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  42            const Elf_Internal_Rela *));
  43 static asection * openrisc_elf_gc_mark_hook
  44   PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
  45            struct elf_link_hash_entry *, Elf_Internal_Sym *));
  46 static boolean openrisc_elf_check_relocs
  47   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  48            const Elf_Internal_Rela *));
  49 static boolean openrisc_elf_object_p
  50   PARAMS ((bfd *));
  51 static void openrisc_elf_final_write_processing
  52   PARAMS ((bfd *, boolean));
  53
  54
  55 static reloc_howto_type openrisc_elf_howto_table[] =
  56   {
  57   /* This reloc does nothing.  */
  58   HOWTO (R_OPENRISC_NONE,       /* type */
  59          0,                     /* rightshift */
  60          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  61          32,                    /* bitsize */
  62          false,                 /* pc_relative */
  63          0,                     /* bitpos */
  64          complain_overflow_bitfield, /* complain_on_overflow */
  65          bfd_elf_generic_reloc, /* special_function */
  66          "R_OPENRISC_NONE",     /* name */
  67          false,                 /* partial_inplace */
  68          0,                     /* src_mask */
  69          0,                     /* dst_mask */
  70          false),                /* pcrel_offset */
  71
  72   /* A PC relative 26 bit relocation, right shifted by 2.  */
  73   HOWTO (R_OPENRISC_INSN_REL_26, /* type */
  74          2,                     /* rightshift */
  75          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  76          26,                    /* bitsize */
  77          true,                  /* pc_relative */
  78          0,                     /* bitpos */
  79          complain_overflow_signed, /* complain_on_overflow */
  80          bfd_elf_generic_reloc, /* special_function */
  81          "R_OPENRISC_INSN_REL_26", /* name */
  82          false,                 /* partial_inplace */
  83          0x00000000,            /* src_mask */
  84          0x03ffffff,            /* dst_mask */
  85          false),                /* pcrel_offset */
  86
  87   /* A absolute 26 bit relocation, right shifted by 2.  */
  88   HOWTO (R_OPENRISC_INSN_ABS_26, /* type */
  89          2,                     /* rightshift */
  90          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  91          26,                    /* bitsize */
  92          false,                 /* pc_relative */
  93          0,                     /* bitpos */
  94          complain_overflow_signed, /* complain_on_overflow */
  95          bfd_elf_generic_reloc, /* special_function */
  96          "R_OPENRISC_INSN_ABS_26", /* name */
  97          false,                 /* partial_inplace */
  98          0x00000000,            /* src_mask */
  99          0x03ffffff,            /* dst_mask */
 100          false),                /* pcrel_offset */
 101
 102   HOWTO (R_OPENRISC_LO_16_IN_INSN, /* type */
 103          0,                     /* rightshift */
 104          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 105          16,                    /* bitsize */
 106          false,                 /* pc_relative */
 107          0,                     /* bitpos */
 108          complain_overflow_dont, /* complain_on_overflow */
 109          bfd_elf_generic_reloc, /* special_function */
 110          "R_OPENRISC_LO_16_IN_INSN", /* name */
 111          false,                 /* partial_inplace */
 112          0,                     /* src_mask */
 113          0x0000ffff,            /* dst_mask */
 114          false),                /* pcrel_offset */
 115
 116   HOWTO (R_OPENRISC_HI_16_IN_INSN, /* type */
 117          16,                    /* rightshift */
 118          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 119          16,                    /* bitsize */
 120          false,                 /* pc_relative */
 121          0,                     /* bitpos */
 122          complain_overflow_dont,        /* complain_on_overflow */
 123          bfd_elf_generic_reloc, /* special_function */
 124          "R_OPENRISC_HI_16_IN_INSN",    /* name */
 125          false,                 /* partial_inplace */
 126          0,                     /* src_mask */
 127          0x0000ffff,            /* dst_mask */
 128          false),                /* pcrel_offset */
 129
 130   /* An 8 bit absolute relocation.  */
 131   HOWTO (R_OPENRISC_8,          /* type */
 132          0,                     /* rightshift */
 133          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 134          8,                     /* bitsize */
 135          false,                 /* pc_relative */
 136          0,                     /* bitpos */
 137          complain_overflow_bitfield, /* complain_on_overflow */
 138          bfd_elf_generic_reloc, /* special_function */
 139          "R_OPENRISC_8",        /* name */
 140          true,                  /* partial_inplace */
 141          0x0000,                /* src_mask */
 142          0x00ff,                /* dst_mask */
 143          false),                /* pcrel_offset */
 144
 145   /* A 16 bit absolute relocation.  */
 146   HOWTO (R_OPENRISC_16,         /* type */
 147          0,                     /* rightshift */
 148          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 149          16,                    /* bitsize */
 150          false,                 /* pc_relative */
 151          0,                     /* bitpos */
 152          complain_overflow_bitfield, /* complain_on_overflow */
 153          bfd_elf_generic_reloc, /* special_function */
 154          "R_OPENRISC_16",       /* name */
 155          true,                  /* partial_inplace */
 156          0x00000000,            /* src_mask */
 157          0x0000ffff,            /* dst_mask */
 158          false),                /* pcrel_offset */
 159
 160   /* A 32 bit absolute relocation.  */
 161   HOWTO (R_OPENRISC_32,         /* type */
 162          0,                     /* rightshift */
 163          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 164          32,                    /* bitsize */
 165          false,                 /* pc_relative */
 166          0,                     /* bitpos */
 167          complain_overflow_bitfield, /* complain_on_overflow */
 168          bfd_elf_generic_reloc, /* special_function */
 169          "R_OPENRISC_32",       /* name */
 170          true,                  /* partial_inplace */
 171          0x00000000,            /* src_mask */
 172          0xffffffff,            /* dst_mask */
 173          false),                /* pcrel_offset */
 174
 175   /* GNU extension to record C++ vtable hierarchy */
 176   HOWTO (R_OPENRISC_GNU_VTINHERIT, /* type */
 177          0,                     /* rightshift */
 178          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 179          0,                     /* bitsize */
 180          false,                 /* pc_relative */
 181          0,                     /* bitpos */
 182          complain_overflow_dont, /* complain_on_overflow */
 183          NULL,                  /* special_function */
 184          "R_OPENRISC_GNU_VTINHERIT", /* name */
 185          false,                 /* partial_inplace */
 186          0,                     /* src_mask */
 187          0,                     /* dst_mask */
 188          false),                /* pcrel_offset */
 189
 190   /* GNU extension to record C++ vtable member usage */
 191   HOWTO (R_OPENRISC_GNU_VTENTRY, /* type */
 192          0,                     /* rightshift */
 193          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 194          0,                     /* bitsize */
 195          false,                 /* pc_relative */
 196          0,                     /* bitpos */
 197          complain_overflow_dont, /* complain_on_overflow */
 198          _bfd_elf_rel_vtable_reloc_fn, /* special_function */
 199          "R_OPENRISC_GNU_VTENTRY", /* name */
 200          false,                 /* partial_inplace */
 201          0,                     /* src_mask */
 202          0,                     /* dst_mask */
 203          false),                /* pcrel_offset */
 204 };
 205
 206 /* Map BFD reloc types to OpenRISC ELF reloc types.  */
 207
 208 struct openrisc_reloc_map
 209   {
 210     bfd_reloc_code_real_type bfd_reloc_val;
 211     unsigned int openrisc_reloc_val;
 212   };
 213
 214 static const struct openrisc_reloc_map openrisc_reloc_map[] =
 215   {
 216     { BFD_RELOC_NONE,           R_OPENRISC_NONE },
 217     { BFD_RELOC_32,             R_OPENRISC_32 },
 218     { BFD_RELOC_16,             R_OPENRISC_16 },
 219     { BFD_RELOC_8,              R_OPENRISC_8 },
 220     { BFD_RELOC_OPENRISC_REL_26,R_OPENRISC_INSN_REL_26 },
 221     { BFD_RELOC_OPENRISC_ABS_26,R_OPENRISC_INSN_ABS_26 },
 222     { BFD_RELOC_HI16,           R_OPENRISC_HI_16_IN_INSN },
 223     { BFD_RELOC_LO16,           R_OPENRISC_LO_16_IN_INSN },
 224     { BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT },
 225     { BFD_RELOC_VTABLE_ENTRY,   R_OPENRISC_GNU_VTENTRY }
 226   };
 227
 228 static reloc_howto_type *
 229 openrisc_reloc_type_lookup (abfd, code)
 230      bfd * abfd ATTRIBUTE_UNUSED;
 231      bfd_reloc_code_real_type code;
 232 {
 233   unsigned int i;
 234
 235   for (i = ARRAY_SIZE (openrisc_reloc_map); --i;)
 236     if (openrisc_reloc_map[i].bfd_reloc_val == code)
 237       return & openrisc_elf_howto_table[openrisc_reloc_map[i].
 238                                        openrisc_reloc_val];
 239
 240   return NULL;
 241 }
 242
 243 /* Set the howto pointer for an OpenRISC ELF reloc.  */
 244
 245 static void
 246 openrisc_info_to_howto_rela (abfd, cache_ptr, dst)
 247      bfd * abfd ATTRIBUTE_UNUSED;
 248      arelent * cache_ptr;
 249      Elf32_Internal_Rela * dst;
 250 {
 251   unsigned int r_type;
 252
 253   r_type = ELF32_R_TYPE (dst->r_info);
 254   BFD_ASSERT (r_type < (unsigned int) R_OPENRISC_max);
 255   cache_ptr->howto = & openrisc_elf_howto_table[r_type];
 256 }
 257
 258 /* Perform a single relocation.  By default we use the standard BFD
 259    routines, but a few relocs, we have to do them ourselves.  */
 260
 261 static bfd_reloc_status_type
 262 openrisc_final_link_relocate (howto, input_bfd, input_section, contents, rel,
 263                               relocation)
 264      reloc_howto_type *howto;
 265      bfd *input_bfd;
 266      asection *input_section;
 267      bfd_byte *contents;
 268      Elf_Internal_Rela *rel;
 269      bfd_vma relocation;
 270 {
 271   bfd_reloc_status_type r = bfd_reloc_ok;
 272
 273   switch (howto->type)
 274     {
 275     case R_OPENRISC_LO_16_IN_INSN:
 276       relocation &= 0xffff;
 277       r = _bfd_final_link_relocate (howto, input_bfd, input_section,
 278                                     contents, rel->r_offset,
 279                                     relocation, rel->r_addend);
 280       break;
 281
 282     default:
 283       r = _bfd_final_link_relocate (howto, input_bfd, input_section,
 284                                     contents, rel->r_offset,
 285                                     relocation, rel->r_addend);
 286     }
 287
 288   return r;
 289 }
 290
 291 /* Relocate an OpenRISC ELF section.
 292
 293    The RELOCATE_SECTION function is called by the new ELF backend linker
 294    to handle the relocations for a section.
 295
 296    The relocs are always passed as Rela structures; if the section
 297    actually uses Rel structures, the r_addend field will always be
 298    zero.
 299
 300    This function is responsible for adjusting the section contents as
 301    necessary, and (if using Rela relocs and generating a relocateable
 302    output file) adjusting the reloc addend as necessary.
 303
 304    This function does not have to worry about setting the reloc
 305    address or the reloc symbol index.
 306
 307    LOCAL_SYMS is a pointer to the swapped in local symbols.
 308
 309    LOCAL_SECTIONS is an array giving the section in the input file
 310    corresponding to the st_shndx field of each local symbol.
 311
 312    The global hash table entry for the global symbols can be found
 313    via elf_sym_hashes (input_bfd).
 314
 315    When generating relocateable output, this function must handle
 316    STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 317    going to be the section symbol corresponding to the output
 318    section, which means that the addend must be adjusted
 319    accordingly.  */
 320
 321 static boolean
 322 openrisc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 323                                contents, relocs, local_syms, local_sections)
 324      bfd *output_bfd;
 325      struct bfd_link_info *info;
 326      bfd *input_bfd;
 327      asection *input_section;
 328      bfd_byte *contents;
 329      Elf_Internal_Rela *relocs;
 330      Elf_Internal_Sym *local_syms;
 331      asection **local_sections;
 332 {
 333   Elf_Internal_Shdr *symtab_hdr;
 334   struct elf_link_hash_entry **sym_hashes;
 335   Elf_Internal_Rela *rel;
 336   Elf_Internal_Rela *relend;
 337
 338   if (info->relocateable)
 339     return true;
 340
 341   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
 342   sym_hashes = elf_sym_hashes (input_bfd);
 343   relend = relocs + input_section->reloc_count;
 344
 345   for (rel = relocs; rel < relend; rel++)
 346     {
 347       reloc_howto_type *howto;
 348       unsigned long r_symndx;
 349       Elf_Internal_Sym *sym;
 350       asection *sec;
 351       struct elf_link_hash_entry *h;
 352       bfd_vma relocation;
 353       bfd_reloc_status_type r;
 354       const char *name = NULL;
 355       int r_type;
 356
 357       r_type = ELF32_R_TYPE (rel->r_info);
 358       r_symndx = ELF32_R_SYM (rel->r_info);
 359
 360       if (r_type == R_OPENRISC_GNU_VTINHERIT
 361           || r_type == R_OPENRISC_GNU_VTENTRY)
 362         continue;
 363
 364       if ((unsigned int) r_type >
 365           (sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type)))
 366         abort ();
 367
 368       /* This is a final link.  */
 369       howto = openrisc_elf_howto_table + ELF32_R_TYPE (rel->r_info);
 370       h = NULL;
 371       sym = NULL;
 372       sec = NULL;
 373
 374       if (r_symndx < symtab_hdr->sh_info)
 375         {
 376           sym = local_syms + r_symndx;
 377           sec = local_sections[r_symndx];
 378           relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
 379
 380           name = bfd_elf_string_from_elf_section
 381             (input_bfd, symtab_hdr->sh_link, sym->st_name);
 382           name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
 383         }
 384       else
 385         {
 386           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
 387
 388           while (h->root.type == bfd_link_hash_indirect
 389                  || h->root.type == bfd_link_hash_warning)
 390             h = (struct elf_link_hash_entry *) h->root.u.i.link;
 391
 392           name = h->root.root.string;
 393
 394           if (h->root.type == bfd_link_hash_defined
 395               || h->root.type == bfd_link_hash_defweak)
 396             {
 397               sec = h->root.u.def.section;
 398               relocation = (h->root.u.def.value
 399                             + sec->output_section->vma + sec->output_offset);
 400             }
 401           else if (h->root.type == bfd_link_hash_undefweak)
 402             {
 403               relocation = 0;
 404             }
 405           else
 406             {
 407               if (!((*info->callbacks->undefined_symbol)
 408                     (info, h->root.root.string, input_bfd,
 409                      input_section, rel->r_offset, true)))
 410                 return false;
 411               relocation = 0;
 412             }
 413         }
 414
 415       r = openrisc_final_link_relocate (howto, input_bfd, input_section,
 416                                         contents, rel, relocation);
 417
 418       if (r != bfd_reloc_ok)
 419         {
 420           const char *msg = (const char *) NULL;
 421
 422           switch (r)
 423             {
 424             case bfd_reloc_overflow:
 425               r = info->callbacks->reloc_overflow
 426                 (info, name, howto->name, (bfd_vma) 0,
 427                  input_bfd, input_section, rel->r_offset);
 428               break;
 429
 430             case bfd_reloc_undefined:
 431               r = info->callbacks->undefined_symbol
 432                 (info, name, input_bfd, input_section, rel->r_offset, true);
 433               break;
 434
 435             case bfd_reloc_outofrange:
 436               msg = _("internal error: out of range error");
 437               break;
 438
 439             case bfd_reloc_notsupported:
 440               msg = _("internal error: unsupported relocation error");
 441               break;
 442
 443             case bfd_reloc_dangerous:
 444               msg = _("internal error: dangerous relocation");
 445               break;
 446
 447             default:
 448               msg = _("internal error: unknown error");
 449               break;
 450             }
 451
 452           if (msg)
 453             r = info->callbacks->warning
 454               (info, msg, name, input_bfd, input_section, rel->r_offset);
 455
 456           if (!r)
 457             return false;
 458         }
 459     }
 460
 461   return true;
 462 }
 463
 464 /* Return the section that should be marked against GC for a given
 465    relocation.  */
 466
 467 static asection *
 468 openrisc_elf_gc_mark_hook (sec, info, rel, h, sym)
 469      asection *sec;
 470      struct bfd_link_info *info ATTRIBUTE_UNUSED;
 471      Elf_Internal_Rela *rel;
 472      struct elf_link_hash_entry *h;
 473      Elf_Internal_Sym *sym;
 474 {
 475   if (h != NULL)
 476     {
 477       switch (ELF32_R_TYPE (rel->r_info))
 478         {
 479         case R_OPENRISC_GNU_VTINHERIT:
 480         case R_OPENRISC_GNU_VTENTRY:
 481           break;
 482
 483         default:
 484           switch (h->root.type)
 485             {
 486             case bfd_link_hash_defined:
 487             case bfd_link_hash_defweak:
 488               return h->root.u.def.section;
 489
 490             case bfd_link_hash_common:
 491               return h->root.u.c.p->section;
 492
 493             default:
 494               break;
 495             }
 496         }
 497     }
 498   else
 499     return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
 500
 501   return NULL;
 502 }
 503
 504 /* Update the got entry reference counts for the section being removed.  */
 505
 506 static boolean
 507 openrisc_elf_gc_sweep_hook (abfd, info, sec, relocs)
 508      bfd *abfd ATTRIBUTE_UNUSED;
 509      struct bfd_link_info *info ATTRIBUTE_UNUSED;
 510      asection *sec ATTRIBUTE_UNUSED;
 511      const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
 512 {
 513   return true;
 514 }
 515
 516 /* Look through the relocs for a section during the first phase.
 517    Since we don't do .gots or .plts, we just need to consider the
 518    virtual table relocs for gc.  */
 519
 520 static boolean
 521 openrisc_elf_check_relocs (abfd, info, sec, relocs)
 522      bfd *abfd;
 523      struct bfd_link_info *info;
 524      asection *sec;
 525      const Elf_Internal_Rela *relocs;
 526 {
 527   Elf_Internal_Shdr *symtab_hdr;
 528   struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
 529   const Elf_Internal_Rela *rel;
 530   const Elf_Internal_Rela *rel_end;
 531
 532   if (info->relocateable)
 533     return true;
 534
 535   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
 536   sym_hashes = elf_sym_hashes (abfd);
 537   sym_hashes_end =
 538     sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
 539   if (!elf_bad_symtab (abfd))
 540     sym_hashes_end -= symtab_hdr->sh_info;
 541
 542   rel_end = relocs + sec->reloc_count;
 543   for (rel = relocs; rel < rel_end; rel++)
 544     {
 545       struct elf_link_hash_entry *h;
 546       unsigned long r_symndx;
 547
 548       r_symndx = ELF32_R_SYM (rel->r_info);
 549       if (r_symndx < symtab_hdr->sh_info)
 550         h = NULL;
 551       else
 552         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
 553
 554       switch (ELF32_R_TYPE (rel->r_info))
 555         {
 556           /* This relocation describes the C++ object vtable hierarchy.
 557              Reconstruct it for later use during GC.  */
 558         case R_OPENRISC_GNU_VTINHERIT:
 559           if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
 560             return false;
 561           break;
 562
 563           /* This relocation describes which C++ vtable entries are actually
 564              used.  Record for later use during GC.  */
 565         case R_OPENRISC_GNU_VTENTRY:
 566           if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
 567             return false;
 568           break;
 569         }
 570     }
 571
 572   return true;
 573 }
 574
 575 /* Set the right machine number.  */
 576
 577 static boolean
 578 openrisc_elf_object_p (abfd)
 579      bfd *abfd;
 580 {
 581   switch (elf_elfheader (abfd)->e_flags & 0xf)
 582     {
 583     default:
 584       (void) bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0);
 585       break;
 586     }
 587   return true;
 588 }
 589
 590 /* Store the machine number in the flags field.  */
 591
 592 static void
 593 openrisc_elf_final_write_processing (abfd, linker)
 594      bfd *abfd;
 595      boolean linker ATTRIBUTE_UNUSED;
 596 {
 597   unsigned long val;
 598
 599   switch (bfd_get_mach (abfd))
 600     {
 601     default:
 602       val = 0;
 603       break;
 604     }
 605
 606   elf_elfheader (abfd)->e_flags &= ~0xf;
 607   elf_elfheader (abfd)->e_flags |= val;
 608 }
 609
 610
 611 #define ELF_ARCH                        bfd_arch_openrisc
 612 #define ELF_MACHINE_CODE                EM_OPENRISC
 613 #define ELF_MACHINE_ALT1                EM_OPENRISC_OLD
 614 #define ELF_MAXPAGESIZE                 0x1000
 615
 616 #define TARGET_BIG_SYM                  bfd_elf32_openrisc_vec
 617 #define TARGET_BIG_NAME                 "elf32-openrisc"
 618
 619 #define elf_info_to_howto_rel           NULL
 620 #define elf_info_to_howto               openrisc_info_to_howto_rela
 621 #define elf_backend_relocate_section    openrisc_elf_relocate_section
 622 #define elf_backend_gc_mark_hook        openrisc_elf_gc_mark_hook
 623 #define elf_backend_gc_sweep_hook       openrisc_elf_gc_sweep_hook
 624 #define elf_backend_check_relocs        openrisc_elf_check_relocs
 625
 626 #define elf_backend_can_gc_sections     1
 627 #define elf_backend_rela_normal         1
 628
 629 #define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_lookup
 630
 631 #define elf_backend_object_p                openrisc_elf_object_p
 632 #define elf_backend_final_write_processing  openrisc_elf_final_write_processing
 633
 634 #include "elf32-target.h"