bfd/coff-i386.c

   1 /* BFD back-end for Intel 386 COFF files.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  22    MA 02110-1301, USA.  */
  23
  24 #include "sysdep.h"
  25 #include "bfd.h"
  26 #include "libbfd.h"
  27
  28 #include "coff/i386.h"
  29
  30 #include "coff/internal.h"
  31
  32 #ifdef COFF_WITH_PE
  33 #include "coff/pe.h"
  34 #endif
  35
  36 #ifdef COFF_GO32_EXE
  37 #include "coff/go32exe.h"
  38 #endif
  39
  40 #ifndef bfd_pe_print_pdata
  41 #define bfd_pe_print_pdata      NULL
  42 #endif
  43
  44 #include "libcoff.h"
  45
  46 static bfd_reloc_status_type coff_i386_reloc
  47   (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);
  48 static reloc_howto_type *coff_i386_rtype_to_howto
  49   (bfd *, asection *, struct internal_reloc *,
  50    struct coff_link_hash_entry *, struct internal_syment *,
  51    bfd_vma *);
  52 static reloc_howto_type *coff_i386_reloc_type_lookup
  53   (bfd *, bfd_reloc_code_real_type);
  54
  55 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
  56 /* The page size is a guess based on ELF.  */
  57
  58 #define COFF_PAGE_SIZE 0x1000
  59
  60 /* For some reason when using i386 COFF the value stored in the .text
  61    section for a reference to a common symbol is the value itself plus
  62    any desired offset.  Ian Taylor, Cygnus Support.  */
  63
  64 /* If we are producing relocatable output, we need to do some
  65    adjustments to the object file that are not done by the
  66    bfd_perform_relocation function.  This function is called by every
  67    reloc type to make any required adjustments.  */
  68
  69 static bfd_reloc_status_type
  70 coff_i386_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd,
  71                  error_message)
  72      bfd *abfd;
  73      arelent *reloc_entry;
  74      asymbol *symbol;
  75      PTR data;
  76      asection *input_section ATTRIBUTE_UNUSED;
  77      bfd *output_bfd;
  78      char **error_message ATTRIBUTE_UNUSED;
  79 {
  80   symvalue diff;
  81
  82 #ifndef COFF_WITH_PE
  83   if (output_bfd == (bfd *) NULL)
  84     return bfd_reloc_continue;
  85 #endif
  86
  87   if (bfd_is_com_section (symbol->section))
  88     {
  89 #ifndef COFF_WITH_PE
  90       /* We are relocating a common symbol.  The current value in the
  91          object file is ORIG + OFFSET, where ORIG is the value of the
  92          common symbol as seen by the object file when it was compiled
  93          (this may be zero if the symbol was undefined) and OFFSET is
  94          the offset into the common symbol (normally zero, but may be
  95          non-zero when referring to a field in a common structure).
  96          ORIG is the negative of reloc_entry->addend, which is set by
  97          the CALC_ADDEND macro below.  We want to replace the value in
  98          the object file with NEW + OFFSET, where NEW is the value of
  99          the common symbol which we are going to put in the final
 100          object file.  NEW is symbol->value.  */
 101       diff = symbol->value + reloc_entry->addend;
 102 #else
 103       /* In PE mode, we do not offset the common symbol.  */
 104       diff = reloc_entry->addend;
 105 #endif
 106     }
 107   else
 108     {
 109       /* For some reason bfd_perform_relocation always effectively
 110          ignores the addend for a COFF target when producing
 111          relocatable output.  This seems to be always wrong for 386
 112          COFF, so we handle the addend here instead.  */
 113 #ifdef COFF_WITH_PE
 114       if (output_bfd == (bfd *) NULL)
 115         {
 116           reloc_howto_type *howto = reloc_entry->howto;
 117
 118           /* Although PC relative relocations are very similar between
 119              PE and non-PE formats, but they are off by 1 << howto->size
 120              bytes. For the external relocation, PE is very different
 121              from others. See md_apply_fix3 () in gas/config/tc-i386.c.
 122              When we link PE and non-PE object files together to
 123              generate a non-PE executable, we have to compensate it
 124              here.  */
 125           if (howto->pc_relative && howto->pcrel_offset)
 126             diff = -(1 << howto->size);
 127           else if (symbol->flags & BSF_WEAK)
 128             diff = reloc_entry->addend - symbol->value;
 129           else
 130             diff = -reloc_entry->addend;
 131         }
 132       else
 133 #endif
 134         diff = reloc_entry->addend;
 135     }
 136
 137 #ifdef COFF_WITH_PE
 138   /* FIXME: How should this case be handled?  */
 139   if (reloc_entry->howto->type == R_IMAGEBASE
 140       && output_bfd != NULL
 141       && bfd_get_flavour(output_bfd) == bfd_target_coff_flavour)
 142     diff -= pe_data (output_bfd)->pe_opthdr.ImageBase;
 143 #endif
 144
 145 #define DOIT(x) \
 146   x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
 147
 148     if (diff != 0)
 149       {
 150         reloc_howto_type *howto = reloc_entry->howto;
 151         unsigned char *addr = (unsigned char *) data + reloc_entry->address;
 152
 153         switch (howto->size)
 154           {
 155           case 0:
 156             {
 157               char x = bfd_get_8 (abfd, addr);
 158               DOIT (x);
 159               bfd_put_8 (abfd, x, addr);
 160             }
 161             break;
 162
 163           case 1:
 164             {
 165               short x = bfd_get_16 (abfd, addr);
 166               DOIT (x);
 167               bfd_put_16 (abfd, (bfd_vma) x, addr);
 168             }
 169             break;
 170
 171           case 2:
 172             {
 173               long x = bfd_get_32 (abfd, addr);
 174               DOIT (x);
 175               bfd_put_32 (abfd, (bfd_vma) x, addr);
 176             }
 177             break;
 178
 179           default:
 180             abort ();
 181           }
 182       }
 183
 184   /* Now let bfd_perform_relocation finish everything up.  */
 185   return bfd_reloc_continue;
 186 }
 187
 188 #ifdef COFF_WITH_PE
 189 /* Return TRUE if this relocation should appear in the output .reloc
 190    section.  */
 191
 192 static bfd_boolean in_reloc_p PARAMS ((bfd *, reloc_howto_type *));
 193
 194 static bfd_boolean in_reloc_p (abfd, howto)
 195      bfd * abfd ATTRIBUTE_UNUSED;
 196      reloc_howto_type *howto;
 197 {
 198   return ! howto->pc_relative && howto->type != R_IMAGEBASE
 199          && howto->type != R_SECREL32;
 200 }
 201 #endif /* COFF_WITH_PE */
 202
 203 #ifndef PCRELOFFSET
 204 #define PCRELOFFSET FALSE
 205 #endif
 206
 207 static reloc_howto_type howto_table[] =
 208 {
 209   EMPTY_HOWTO (0),
 210   EMPTY_HOWTO (1),
 211   EMPTY_HOWTO (2),
 212   EMPTY_HOWTO (3),
 213   EMPTY_HOWTO (4),
 214   EMPTY_HOWTO (5),
 215   HOWTO (R_DIR32,               /* type */
 216          0,                     /* rightshift */
 217          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 218          32,                    /* bitsize */
 219          FALSE,                 /* pc_relative */
 220          0,                     /* bitpos */
 221          complain_overflow_bitfield, /* complain_on_overflow */
 222          coff_i386_reloc,       /* special_function */
 223          "dir32",               /* name */
 224          TRUE,                  /* partial_inplace */
 225          0xffffffff,            /* src_mask */
 226          0xffffffff,            /* dst_mask */
 227          TRUE),                 /* pcrel_offset */
 228   /* PE IMAGE_REL_I386_DIR32NB relocation (7).  */
 229   HOWTO (R_IMAGEBASE,           /* type */
 230          0,                     /* rightshift */
 231          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 232          32,                    /* bitsize */
 233          FALSE,                 /* pc_relative */
 234          0,                     /* bitpos */
 235          complain_overflow_bitfield, /* complain_on_overflow */
 236          coff_i386_reloc,       /* special_function */
 237          "rva32",               /* name */
 238          TRUE,                  /* partial_inplace */
 239          0xffffffff,            /* src_mask */
 240          0xffffffff,            /* dst_mask */
 241          FALSE),                /* pcrel_offset */
 242   EMPTY_HOWTO (010),
 243   EMPTY_HOWTO (011),
 244   EMPTY_HOWTO (012),
 245 #ifdef COFF_WITH_PE
 246   /* 32-bit longword section relative relocation (013).  */
 247   HOWTO (R_SECREL32,            /* type */
 248          0,                     /* rightshift */
 249          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 250          32,                    /* bitsize */
 251          FALSE,                 /* pc_relative */
 252          0,                     /* bitpos */
 253          complain_overflow_bitfield, /* complain_on_overflow */
 254          coff_i386_reloc,       /* special_function */
 255          "secrel32",            /* name */
 256          TRUE,                  /* partial_inplace */
 257          0xffffffff,            /* src_mask */
 258          0xffffffff,            /* dst_mask */
 259          TRUE),                 /* pcrel_offset */
 260 #else
 261   EMPTY_HOWTO (013),
 262 #endif
 263   EMPTY_HOWTO (014),
 264   EMPTY_HOWTO (015),
 265   EMPTY_HOWTO (016),
 266   /* Byte relocation (017).  */
 267   HOWTO (R_RELBYTE,             /* type */
 268          0,                     /* rightshift */
 269          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 270          8,                     /* bitsize */
 271          FALSE,                 /* pc_relative */
 272          0,                     /* bitpos */
 273          complain_overflow_bitfield, /* complain_on_overflow */
 274          coff_i386_reloc,       /* special_function */
 275          "8",                   /* name */
 276          TRUE,                  /* partial_inplace */
 277          0x000000ff,            /* src_mask */
 278          0x000000ff,            /* dst_mask */
 279          PCRELOFFSET),          /* pcrel_offset */
 280   /* 16-bit word relocation (020).  */
 281   HOWTO (R_RELWORD,             /* type */
 282          0,                     /* rightshift */
 283          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 284          16,                    /* bitsize */
 285          FALSE,                 /* pc_relative */
 286          0,                     /* bitpos */
 287          complain_overflow_bitfield, /* complain_on_overflow */
 288          coff_i386_reloc,       /* special_function */
 289          "16",                  /* name */
 290          TRUE,                  /* partial_inplace */
 291          0x0000ffff,            /* src_mask */
 292          0x0000ffff,            /* dst_mask */
 293          PCRELOFFSET),          /* pcrel_offset */
 294   /* 32-bit longword relocation (021).  */
 295   HOWTO (R_RELLONG,             /* type */
 296          0,                     /* rightshift */
 297          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 298          32,                    /* bitsize */
 299          FALSE,                 /* pc_relative */
 300          0,                     /* bitpos */
 301          complain_overflow_bitfield, /* complain_on_overflow */
 302          coff_i386_reloc,       /* special_function */
 303          "32",                  /* name */
 304          TRUE,                  /* partial_inplace */
 305          0xffffffff,            /* src_mask */
 306          0xffffffff,            /* dst_mask */
 307          PCRELOFFSET),          /* pcrel_offset */
 308   /* Byte PC relative relocation (022).  */
 309   HOWTO (R_PCRBYTE,             /* type */
 310          0,                     /* rightshift */
 311          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 312          8,                     /* bitsize */
 313          TRUE,                  /* pc_relative */
 314          0,                     /* bitpos */
 315          complain_overflow_signed, /* complain_on_overflow */
 316          coff_i386_reloc,       /* special_function */
 317          "DISP8",               /* name */
 318          TRUE,                  /* partial_inplace */
 319          0x000000ff,            /* src_mask */
 320          0x000000ff,            /* dst_mask */
 321          PCRELOFFSET),          /* pcrel_offset */
 322   /* 16-bit word PC relative relocation (023).  */
 323   HOWTO (R_PCRWORD,             /* type */
 324          0,                     /* rightshift */
 325          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 326          16,                    /* bitsize */
 327          TRUE,                  /* pc_relative */
 328          0,                     /* bitpos */
 329          complain_overflow_signed, /* complain_on_overflow */
 330          coff_i386_reloc,       /* special_function */
 331          "DISP16",              /* name */
 332          TRUE,                  /* partial_inplace */
 333          0x0000ffff,            /* src_mask */
 334          0x0000ffff,            /* dst_mask */
 335          PCRELOFFSET),          /* pcrel_offset */
 336   /* 32-bit longword PC relative relocation (024).  */
 337   HOWTO (R_PCRLONG,             /* type */
 338          0,                     /* rightshift */
 339          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 340          32,                    /* bitsize */
 341          TRUE,                  /* pc_relative */
 342          0,                     /* bitpos */
 343          complain_overflow_signed, /* complain_on_overflow */
 344          coff_i386_reloc,       /* special_function */
 345          "DISP32",              /* name */
 346          TRUE,                  /* partial_inplace */
 347          0xffffffff,            /* src_mask */
 348          0xffffffff,            /* dst_mask */
 349          PCRELOFFSET)           /* pcrel_offset */
 350 };
 351
 352 /* Turn a howto into a reloc  nunmber */
 353
 354 #define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
 355 #define BADMAG(x) I386BADMAG(x)
 356 #define I386 1                  /* Customize coffcode.h */
 357
 358 #define RTYPE2HOWTO(cache_ptr, dst)                                     \
 359   ((cache_ptr)->howto =                                                 \
 360    ((dst)->r_type < sizeof (howto_table) / sizeof (howto_table[0])      \
 361     ? howto_table + (dst)->r_type                                       \
 362     : NULL))
 363
 364 /* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
 365    library.  On some other COFF targets STYP_BSS is normally
 366    STYP_NOLOAD.  */
 367 #define BSS_NOLOAD_IS_SHARED_LIBRARY
 368
 369 /* Compute the addend of a reloc.  If the reloc is to a common symbol,
 370    the object file contains the value of the common symbol.  By the
 371    time this is called, the linker may be using a different symbol
 372    from a different object file with a different value.  Therefore, we
 373    hack wildly to locate the original symbol from this file so that we
 374    can make the correct adjustment.  This macro sets coffsym to the
 375    symbol from the original file, and uses it to set the addend value
 376    correctly.  If this is not a common symbol, the usual addend
 377    calculation is done, except that an additional tweak is needed for
 378    PC relative relocs.
 379    FIXME: This macro refers to symbols and asect; these are from the
 380    calling function, not the macro arguments.  */
 381
 382 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)                \
 383   {                                                             \
 384     coff_symbol_type *coffsym = (coff_symbol_type *) NULL;      \
 385     if (ptr && bfd_asymbol_bfd (ptr) != abfd)                   \
 386       coffsym = (obj_symbols (abfd)                             \
 387                  + (cache_ptr->sym_ptr_ptr - symbols));         \
 388     else if (ptr)                                               \
 389       coffsym = coff_symbol_from (abfd, ptr);                   \
 390     if (coffsym != (coff_symbol_type *) NULL                    \
 391         && coffsym->native->u.syment.n_scnum == 0)              \
 392       cache_ptr->addend = - coffsym->native->u.syment.n_value;  \
 393     else if (ptr && bfd_asymbol_bfd (ptr) == abfd               \
 394              && ptr->section != (asection *) NULL)              \
 395       cache_ptr->addend = - (ptr->section->vma + ptr->value);   \
 396     else                                                        \
 397       cache_ptr->addend = 0;                                    \
 398     if (ptr && howto_table[reloc.r_type].pc_relative)           \
 399       cache_ptr->addend += asect->vma;                          \
 400   }
 401
 402 /* We use the special COFF backend linker.  For normal i386 COFF, we
 403    can use the generic relocate_section routine.  For PE, we need our
 404    own routine.  */
 405
 406 #ifndef COFF_WITH_PE
 407
 408 #define coff_relocate_section _bfd_coff_generic_relocate_section
 409
 410 #else /* COFF_WITH_PE */
 411
 412 /* The PE relocate section routine.  The only difference between this
 413    and the regular routine is that we don't want to do anything for a
 414    relocatable link.  */
 415
 416 static bfd_boolean coff_pe_i386_relocate_section
 417   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 418            struct internal_reloc *, struct internal_syment *, asection **));
 419
 420 static bfd_boolean
 421 coff_pe_i386_relocate_section (output_bfd, info, input_bfd,
 422                                input_section, contents, relocs, syms,
 423                                sections)
 424      bfd *output_bfd;
 425      struct bfd_link_info *info;
 426      bfd *input_bfd;
 427      asection *input_section;
 428      bfd_byte *contents;
 429      struct internal_reloc *relocs;
 430      struct internal_syment *syms;
 431      asection **sections;
 432 {
 433   if (info->relocatable)
 434     return TRUE;
 435
 436   return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd,
 437                                              input_section, contents,
 438                                              relocs, syms, sections);
 439 }
 440
 441 #define coff_relocate_section coff_pe_i386_relocate_section
 442
 443 #endif /* COFF_WITH_PE */
 444
 445 /* Convert an rtype to howto for the COFF backend linker.  */
 446
 447 static reloc_howto_type *
 448 coff_i386_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
 449      bfd *abfd ATTRIBUTE_UNUSED;
 450      asection *sec;
 451      struct internal_reloc *rel;
 452      struct coff_link_hash_entry *h;
 453      struct internal_syment *sym;
 454      bfd_vma *addendp;
 455 {
 456   reloc_howto_type *howto;
 457
 458   if (rel->r_type >= sizeof (howto_table) / sizeof (howto_table[0]))
 459     {
 460       bfd_set_error (bfd_error_bad_value);
 461       return NULL;
 462     }
 463
 464   howto = howto_table + rel->r_type;
 465
 466 #ifdef COFF_WITH_PE
 467   /* Cancel out code in _bfd_coff_generic_relocate_section.  */
 468   *addendp = 0;
 469 #endif
 470
 471   if (howto->pc_relative)
 472     *addendp += sec->vma;
 473
 474   if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
 475     {
 476       /* This is a common symbol.  The section contents include the
 477          size (sym->n_value) as an addend.  The relocate_section
 478          function will be adding in the final value of the symbol.  We
 479          need to subtract out the current size in order to get the
 480          correct result.  */
 481
 482       BFD_ASSERT (h != NULL);
 483
 484 #ifndef COFF_WITH_PE
 485       /* I think we *do* want to bypass this.  If we don't, I have
 486          seen some data parameters get the wrong relocation address.
 487          If I link two versions with and without this section bypassed
 488          and then do a binary comparison, the addresses which are
 489          different can be looked up in the map.  The case in which
 490          this section has been bypassed has addresses which correspond
 491          to values I can find in the map.  */
 492       *addendp -= sym->n_value;
 493 #endif
 494     }
 495
 496 #ifndef COFF_WITH_PE
 497   /* If the output symbol is common (in which case this must be a
 498      relocatable link), we need to add in the final size of the
 499      common symbol.  */
 500   if (h != NULL && h->root.type == bfd_link_hash_common)
 501     *addendp += h->root.u.c.size;
 502 #endif
 503
 504 #ifdef COFF_WITH_PE
 505   if (howto->pc_relative)
 506     {
 507       *addendp -= 4;
 508
 509       /* If the symbol is defined, then the generic code is going to
 510          add back the symbol value in order to cancel out an
 511          adjustment it made to the addend.  However, we set the addend
 512          to 0 at the start of this function.  We need to adjust here,
 513          to avoid the adjustment the generic code will make.  FIXME:
 514          This is getting a bit hackish.  */
 515       if (sym != NULL && sym->n_scnum != 0)
 516         *addendp -= sym->n_value;
 517     }
 518
 519   if (rel->r_type == R_IMAGEBASE
 520       && (bfd_get_flavour(sec->output_section->owner)
 521           == bfd_target_coff_flavour))
 522     {
 523       *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
 524     }
 525
 526   BFD_ASSERT (sym != NULL);
 527   if (rel->r_type == R_SECREL32 && sym != NULL)
 528     {
 529       bfd_vma osect_vma;
 530
 531       if (h && (h->root.type == bfd_link_hash_defined
 532                 || h->root.type == bfd_link_hash_defweak))
 533         osect_vma = h->root.u.def.section->output_section->vma;
 534       else
 535         {
 536           asection *s;
 537           int i;
 538
 539           /* Sigh, the only way to get the section to offset against
 540              is to find it the hard way.  */
 541
 542           for (s = abfd->sections, i = 1; i < sym->n_scnum; i++)
 543             s = s->next;
 544
 545           osect_vma = s->output_section->vma;
 546         }
 547
 548       *addendp -= osect_vma;
 549     }
 550 #endif
 551
 552   return howto;
 553 }
 554
 555 #define coff_bfd_reloc_type_lookup coff_i386_reloc_type_lookup
 556 #define coff_bfd_reloc_name_lookup coff_i386_reloc_name_lookup
 557
 558 static reloc_howto_type *
 559 coff_i386_reloc_type_lookup (abfd, code)
 560      bfd *abfd ATTRIBUTE_UNUSED;
 561      bfd_reloc_code_real_type code;
 562 {
 563   switch (code)
 564     {
 565     case BFD_RELOC_RVA:
 566       return howto_table + R_IMAGEBASE;
 567     case BFD_RELOC_32:
 568       return howto_table + R_DIR32;
 569     case BFD_RELOC_32_PCREL:
 570       return howto_table + R_PCRLONG;
 571     case BFD_RELOC_16:
 572       return howto_table + R_RELWORD;
 573     case BFD_RELOC_16_PCREL:
 574       return howto_table + R_PCRWORD;
 575     case BFD_RELOC_8:
 576       return howto_table + R_RELBYTE;
 577     case BFD_RELOC_8_PCREL:
 578       return howto_table + R_PCRBYTE;
 579 #ifdef COFF_WITH_PE
 580     case BFD_RELOC_32_SECREL:
 581       return howto_table + R_SECREL32;
 582 #endif
 583     default:
 584       BFD_FAIL ();
 585       return 0;
 586     }
 587 }
 588
 589 static reloc_howto_type *
 590 coff_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 591                              const char *r_name)
 592 {
 593   unsigned int i;
 594
 595   for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
 596     if (howto_table[i].name != NULL
 597         && strcasecmp (howto_table[i].name, r_name) == 0)
 598       return &howto_table[i];
 599
 600   return NULL;
 601 }
 602
 603 #define coff_rtype_to_howto coff_i386_rtype_to_howto
 604
 605 #ifdef TARGET_UNDERSCORE
 606
 607 /* If i386 gcc uses underscores for symbol names, then it does not use
 608    a leading dot for local labels, so if TARGET_UNDERSCORE is defined
 609    we treat all symbols starting with L as local.  */
 610
 611 static bfd_boolean coff_i386_is_local_label_name
 612   PARAMS ((bfd *, const char *));
 613
 614 static bfd_boolean
 615 coff_i386_is_local_label_name (abfd, name)
 616      bfd *abfd;
 617      const char *name;
 618 {
 619   if (name[0] == 'L')
 620     return TRUE;
 621
 622   return _bfd_coff_is_local_label_name (abfd, name);
 623 }
 624
 625 #define coff_bfd_is_local_label_name coff_i386_is_local_label_name
 626
 627 #endif /* TARGET_UNDERSCORE */
 628
 629 #include "coffcode.h"
 630
 631 const bfd_target
 632 #ifdef TARGET_SYM
 633   TARGET_SYM =
 634 #else
 635   i386coff_vec =
 636 #endif
 637 {
 638 #ifdef TARGET_NAME
 639   TARGET_NAME,
 640 #else
 641   "coff-i386",                  /* name */
 642 #endif
 643   bfd_target_coff_flavour,
 644   BFD_ENDIAN_LITTLE,            /* data byte order is little */
 645   BFD_ENDIAN_LITTLE,            /* header byte order is little */
 646
 647   (HAS_RELOC | EXEC_P |         /* object flags */
 648    HAS_LINENO | HAS_DEBUG |
 649    HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
 650
 651   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
 652 #ifdef COFF_WITH_PE
 653    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY
 654 #endif
 655    | SEC_CODE | SEC_DATA),
 656
 657 #ifdef TARGET_UNDERSCORE
 658   TARGET_UNDERSCORE,            /* leading underscore */
 659 #else
 660   0,                            /* leading underscore */
 661 #endif
 662   '/',                          /* ar_pad_char */
 663   15,                           /* ar_max_namelen */
 664   0,                            /* match priority.  */
 665
 666   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 667      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 668      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
 669   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 670      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 671      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
 672
 673 /* Note that we allow an object file to be treated as a core file as well.  */
 674     /* bfd_check_format */
 675 #ifdef COFF_CHECK_FORMAT
 676     {_bfd_dummy_target, COFF_CHECK_FORMAT,
 677        bfd_generic_archive_p, COFF_CHECK_FORMAT},
 678 #else
 679     {_bfd_dummy_target, coff_object_p, bfd_generic_archive_p, coff_object_p},
 680 #endif
 681     {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
 682        bfd_false},
 683     {bfd_false, coff_write_object_contents, /* bfd_write_contents */
 684        _bfd_write_archive_contents, bfd_false},
 685
 686      BFD_JUMP_TABLE_GENERIC (coff),
 687      BFD_JUMP_TABLE_COPY (coff),
 688      BFD_JUMP_TABLE_CORE (_bfd_nocore),
 689      BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 690      BFD_JUMP_TABLE_SYMBOLS (coff),
 691      BFD_JUMP_TABLE_RELOCS (coff),
 692      BFD_JUMP_TABLE_WRITE (coff),
 693      BFD_JUMP_TABLE_LINK (coff),
 694      BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
 695
 696   NULL,
 697
 698   COFF_SWAP_TABLE
 699 };