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  1. /* BFD back-end for Intel 386 COFF files.
  2.    Copyright (C) 1990-2015 Free Software Foundation, Inc.
  3.    Written by Cygnus Support.
  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.  
  26. #include "coff/i386.h"
  27.  
  28. #include "coff/internal.h"
  29.  
  30. #ifdef COFF_WITH_PE
  31. #include "coff/pe.h"
  32. #endif
  33.  
  34. #ifdef COFF_GO32_EXE
  35. #include "coff/go32exe.h"
  36. #endif
  37.  
  38. #ifndef bfd_pe_print_pdata
  39. #define bfd_pe_print_pdata      NULL
  40. #endif
  41.  
  42. #include "libcoff.h"
  43.  
  44. static reloc_howto_type *coff_i386_rtype_to_howto
  45.   (bfd *, asection *, struct internal_reloc *,
  46.    struct coff_link_hash_entry *, struct internal_syment *,
  47.    bfd_vma *);
  48. static reloc_howto_type *coff_i386_reloc_type_lookup
  49.   (bfd *, bfd_reloc_code_real_type);
  50.  
  51. #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
  52. /* The page size is a guess based on ELF.  */
  53.  
  54. #define COFF_PAGE_SIZE 0x1000
  55.  
  56. /* For some reason when using i386 COFF the value stored in the .text
  57.    section for a reference to a common symbol is the value itself plus
  58.    any desired offset.  Ian Taylor, Cygnus Support.  */
  59.  
  60. /* If we are producing relocatable output, we need to do some
  61.    adjustments to the object file that are not done by the
  62.    bfd_perform_relocation function.  This function is called by every
  63.    reloc type to make any required adjustments.  */
  64.  
  65. static bfd_reloc_status_type
  66. coff_i386_reloc (bfd *abfd,
  67.                  arelent *reloc_entry,
  68.                  asymbol *symbol,
  69.                  void * data,
  70.                  asection *input_section ATTRIBUTE_UNUSED,
  71.                  bfd *output_bfd,
  72.                  char **error_message ATTRIBUTE_UNUSED)
  73. {
  74.   symvalue diff;
  75.  
  76. #ifndef COFF_WITH_PE
  77.   if (output_bfd == (bfd *) NULL)
  78.     return bfd_reloc_continue;
  79. #endif
  80.  
  81.   if (bfd_is_com_section (symbol->section))
  82.     {
  83. #ifndef COFF_WITH_PE
  84.       /* We are relocating a common symbol.  The current value in the
  85.          object file is ORIG + OFFSET, where ORIG is the value of the
  86.          common symbol as seen by the object file when it was compiled
  87.          (this may be zero if the symbol was undefined) and OFFSET is
  88.          the offset into the common symbol (normally zero, but may be
  89.          non-zero when referring to a field in a common structure).
  90.          ORIG is the negative of reloc_entry->addend, which is set by
  91.          the CALC_ADDEND macro below.  We want to replace the value in
  92.          the object file with NEW + OFFSET, where NEW is the value of
  93.          the common symbol which we are going to put in the final
  94.          object file.  NEW is symbol->value.  */
  95.       diff = symbol->value + reloc_entry->addend;
  96. #else
  97.       /* In PE mode, we do not offset the common symbol.  */
  98.       diff = reloc_entry->addend;
  99. #endif
  100.     }
  101.   else
  102.     {
  103.       /* For some reason bfd_perform_relocation always effectively
  104.          ignores the addend for a COFF target when producing
  105.          relocatable output.  This seems to be always wrong for 386
  106.          COFF, so we handle the addend here instead.  */
  107. #ifdef COFF_WITH_PE
  108.       if (output_bfd == (bfd *) NULL)
  109.         {
  110.           reloc_howto_type *howto = reloc_entry->howto;
  111.  
  112.           /* Although PC relative relocations are very similar between
  113.              PE and non-PE formats, but they are off by 1 << howto->size
  114.              bytes. For the external relocation, PE is very different
  115.              from others. See md_apply_fix3 () in gas/config/tc-i386.c.
  116.              When we link PE and non-PE object files together to
  117.              generate a non-PE executable, we have to compensate it
  118.              here.  */
  119.           if (howto->pc_relative && howto->pcrel_offset)
  120.             diff = -(1 << howto->size);
  121.           else if (symbol->flags & BSF_WEAK)
  122.             diff = reloc_entry->addend - symbol->value;
  123.           else
  124.             diff = -reloc_entry->addend;
  125.         }
  126.       else
  127. #endif
  128.         diff = reloc_entry->addend;
  129.     }
  130.  
  131. #ifdef COFF_WITH_PE
  132.   /* FIXME: How should this case be handled?  */
  133.   if (reloc_entry->howto->type == R_IMAGEBASE
  134.       && output_bfd != NULL
  135.       && bfd_get_flavour(output_bfd) == bfd_target_coff_flavour)
  136.     diff -= pe_data (output_bfd)->pe_opthdr.ImageBase;
  137. #endif
  138.  
  139. #define DOIT(x) \
  140.   x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
  141.  
  142.     if (diff != 0)
  143.       {
  144.         reloc_howto_type *howto = reloc_entry->howto;
  145.         unsigned char *addr = (unsigned char *) data + reloc_entry->address;
  146.  
  147.         switch (howto->size)
  148.           {
  149.           case 0:
  150.             {
  151.               char x = bfd_get_8 (abfd, addr);
  152.               DOIT (x);
  153.               bfd_put_8 (abfd, x, addr);
  154.             }
  155.             break;
  156.  
  157.           case 1:
  158.             {
  159.               short x = bfd_get_16 (abfd, addr);
  160.               DOIT (x);
  161.               bfd_put_16 (abfd, (bfd_vma) x, addr);
  162.             }
  163.             break;
  164.  
  165.           case 2:
  166.             {
  167.               long x = bfd_get_32 (abfd, addr);
  168.               DOIT (x);
  169.               bfd_put_32 (abfd, (bfd_vma) x, addr);
  170.             }
  171.             break;
  172.  
  173.           default:
  174.             abort ();
  175.           }
  176.       }
  177.  
  178.   /* Now let bfd_perform_relocation finish everything up.  */
  179.   return bfd_reloc_continue;
  180. }
  181.  
  182. #ifdef COFF_WITH_PE
  183. /* Return TRUE if this relocation should appear in the output .reloc
  184.    section.  */
  185.  
  186. static bfd_boolean in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
  187.                                reloc_howto_type *howto)
  188. {
  189.   return ! howto->pc_relative && howto->type != R_IMAGEBASE
  190.          && howto->type != R_SECREL32;
  191. }
  192. #endif /* COFF_WITH_PE */
  193.  
  194. #ifndef PCRELOFFSET
  195. #define PCRELOFFSET FALSE
  196. #endif
  197.  
  198. static reloc_howto_type howto_table[] =
  199. {
  200.   EMPTY_HOWTO (0),
  201.   EMPTY_HOWTO (1),
  202.   EMPTY_HOWTO (2),
  203.   EMPTY_HOWTO (3),
  204.   EMPTY_HOWTO (4),
  205.   EMPTY_HOWTO (5),
  206.   HOWTO (R_DIR32,               /* type */
  207.          0,                     /* rightshift */
  208.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  209.          32,                    /* bitsize */
  210.          FALSE,                 /* pc_relative */
  211.          0,                     /* bitpos */
  212.          complain_overflow_bitfield, /* complain_on_overflow */
  213.          coff_i386_reloc,       /* special_function */
  214.          "dir32",               /* name */
  215.          TRUE,                  /* partial_inplace */
  216.          0xffffffff,            /* src_mask */
  217.          0xffffffff,            /* dst_mask */
  218.          TRUE),                 /* pcrel_offset */
  219.   /* PE IMAGE_REL_I386_DIR32NB relocation (7).  */
  220.   HOWTO (R_IMAGEBASE,           /* type */
  221.          0,                     /* rightshift */
  222.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  223.          32,                    /* bitsize */
  224.          FALSE,                 /* pc_relative */
  225.          0,                     /* bitpos */
  226.          complain_overflow_bitfield, /* complain_on_overflow */
  227.          coff_i386_reloc,       /* special_function */
  228.          "rva32",               /* name */
  229.          TRUE,                  /* partial_inplace */
  230.          0xffffffff,            /* src_mask */
  231.          0xffffffff,            /* dst_mask */
  232.          FALSE),                /* pcrel_offset */
  233.   EMPTY_HOWTO (010),
  234.   EMPTY_HOWTO (011),
  235.   EMPTY_HOWTO (012),
  236. #ifdef COFF_WITH_PE
  237.   /* 32-bit longword section relative relocation (013).  */
  238.   HOWTO (R_SECREL32,            /* type */
  239.          0,                     /* rightshift */
  240.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  241.          32,                    /* bitsize */
  242.          FALSE,                 /* pc_relative */
  243.          0,                     /* bitpos */
  244.          complain_overflow_bitfield, /* complain_on_overflow */
  245.          coff_i386_reloc,       /* special_function */
  246.          "secrel32",            /* name */
  247.          TRUE,                  /* partial_inplace */
  248.          0xffffffff,            /* src_mask */
  249.          0xffffffff,            /* dst_mask */
  250.          TRUE),                 /* pcrel_offset */
  251. #else
  252.   EMPTY_HOWTO (013),
  253. #endif
  254.   EMPTY_HOWTO (014),
  255.   EMPTY_HOWTO (015),
  256.   EMPTY_HOWTO (016),
  257.   /* Byte relocation (017).  */
  258.   HOWTO (R_RELBYTE,             /* type */
  259.          0,                     /* rightshift */
  260.          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  261.          8,                     /* bitsize */
  262.          FALSE,                 /* pc_relative */
  263.          0,                     /* bitpos */
  264.          complain_overflow_bitfield, /* complain_on_overflow */
  265.          coff_i386_reloc,       /* special_function */
  266.          "8",                   /* name */
  267.          TRUE,                  /* partial_inplace */
  268.          0x000000ff,            /* src_mask */
  269.          0x000000ff,            /* dst_mask */
  270.          PCRELOFFSET),          /* pcrel_offset */
  271.   /* 16-bit word relocation (020).  */
  272.   HOWTO (R_RELWORD,             /* type */
  273.          0,                     /* rightshift */
  274.          1,                     /* size (0 = byte, 1 = short, 2 = long) */
  275.          16,                    /* bitsize */
  276.          FALSE,                 /* pc_relative */
  277.          0,                     /* bitpos */
  278.          complain_overflow_bitfield, /* complain_on_overflow */
  279.          coff_i386_reloc,       /* special_function */
  280.          "16",                  /* name */
  281.          TRUE,                  /* partial_inplace */
  282.          0x0000ffff,            /* src_mask */
  283.          0x0000ffff,            /* dst_mask */
  284.          PCRELOFFSET),          /* pcrel_offset */
  285.   /* 32-bit longword relocation (021).  */
  286.   HOWTO (R_RELLONG,             /* type */
  287.          0,                     /* rightshift */
  288.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  289.          32,                    /* bitsize */
  290.          FALSE,                 /* pc_relative */
  291.          0,                     /* bitpos */
  292.          complain_overflow_bitfield, /* complain_on_overflow */
  293.          coff_i386_reloc,       /* special_function */
  294.          "32",                  /* name */
  295.          TRUE,                  /* partial_inplace */
  296.          0xffffffff,            /* src_mask */
  297.          0xffffffff,            /* dst_mask */
  298.          PCRELOFFSET),          /* pcrel_offset */
  299.   /* Byte PC relative relocation (022).  */
  300.   HOWTO (R_PCRBYTE,             /* type */
  301.          0,                     /* rightshift */
  302.          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  303.          8,                     /* bitsize */
  304.          TRUE,                  /* pc_relative */
  305.          0,                     /* bitpos */
  306.          complain_overflow_signed, /* complain_on_overflow */
  307.          coff_i386_reloc,       /* special_function */
  308.          "DISP8",               /* name */
  309.          TRUE,                  /* partial_inplace */
  310.          0x000000ff,            /* src_mask */
  311.          0x000000ff,            /* dst_mask */
  312.          PCRELOFFSET),          /* pcrel_offset */
  313.   /* 16-bit word PC relative relocation (023).  */
  314.   HOWTO (R_PCRWORD,             /* type */
  315.          0,                     /* rightshift */
  316.          1,                     /* size (0 = byte, 1 = short, 2 = long) */
  317.          16,                    /* bitsize */
  318.          TRUE,                  /* pc_relative */
  319.          0,                     /* bitpos */
  320.          complain_overflow_signed, /* complain_on_overflow */
  321.          coff_i386_reloc,       /* special_function */
  322.          "DISP16",              /* name */
  323.          TRUE,                  /* partial_inplace */
  324.          0x0000ffff,            /* src_mask */
  325.          0x0000ffff,            /* dst_mask */
  326.          PCRELOFFSET),          /* pcrel_offset */
  327.   /* 32-bit longword PC relative relocation (024).  */
  328.   HOWTO (R_PCRLONG,             /* type */
  329.          0,                     /* rightshift */
  330.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  331.          32,                    /* bitsize */
  332.          TRUE,                  /* pc_relative */
  333.          0,                     /* bitpos */
  334.          complain_overflow_signed, /* complain_on_overflow */
  335.          coff_i386_reloc,       /* special_function */
  336.          "DISP32",              /* name */
  337.          TRUE,                  /* partial_inplace */
  338.          0xffffffff,            /* src_mask */
  339.          0xffffffff,            /* dst_mask */
  340.          PCRELOFFSET)           /* pcrel_offset */
  341. };
  342.  
  343. #define NUM_HOWTOS (sizeof (howto_table) / sizeof (howto_table[0]))
  344.  
  345. /* Turn a howto into a reloc  nunmber */
  346.  
  347. #define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
  348. #define BADMAG(x) I386BADMAG(x)
  349. #define I386 1                  /* Customize coffcode.h */
  350.  
  351. #define RTYPE2HOWTO(cache_ptr, dst)                                     \
  352.   ((cache_ptr)->howto =                                                 \
  353.    ((dst)->r_type < NUM_HOWTOS                                  \
  354.     ? howto_table + (dst)->r_type                                       \
  355.     : NULL))
  356.  
  357. /* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
  358.    library.  On some other COFF targets STYP_BSS is normally
  359.    STYP_NOLOAD.  */
  360. #define BSS_NOLOAD_IS_SHARED_LIBRARY
  361.  
  362. /* Compute the addend of a reloc.  If the reloc is to a common symbol,
  363.    the object file contains the value of the common symbol.  By the
  364.    time this is called, the linker may be using a different symbol
  365.    from a different object file with a different value.  Therefore, we
  366.    hack wildly to locate the original symbol from this file so that we
  367.    can make the correct adjustment.  This macro sets coffsym to the
  368.    symbol from the original file, and uses it to set the addend value
  369.    correctly.  If this is not a common symbol, the usual addend
  370.    calculation is done, except that an additional tweak is needed for
  371.    PC relative relocs.
  372.    FIXME: This macro refers to symbols and asect; these are from the
  373.    calling function, not the macro arguments.  */
  374.  
  375. #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)                \
  376.   {                                                             \
  377.     coff_symbol_type *coffsym = (coff_symbol_type *) NULL;      \
  378.     if (ptr && bfd_asymbol_bfd (ptr) != abfd)                   \
  379.       coffsym = (obj_symbols (abfd)                             \
  380.                  + (cache_ptr->sym_ptr_ptr - symbols));         \
  381.     else if (ptr)                                               \
  382.       coffsym = coff_symbol_from (ptr);                         \
  383.     if (coffsym != (coff_symbol_type *) NULL                    \
  384.         && coffsym->native->u.syment.n_scnum == 0)              \
  385.       cache_ptr->addend = - coffsym->native->u.syment.n_value;  \
  386.     else if (ptr && bfd_asymbol_bfd (ptr) == abfd               \
  387.              && ptr->section != (asection *) NULL)              \
  388.       cache_ptr->addend = - (ptr->section->vma + ptr->value);   \
  389.     else                                                        \
  390.       cache_ptr->addend = 0;                                    \
  391.     if (ptr && reloc.r_type < NUM_HOWTOS                        \
  392.         && howto_table[reloc.r_type].pc_relative)               \
  393.       cache_ptr->addend += asect->vma;                          \
  394.   }
  395.  
  396. /* We use the special COFF backend linker.  For normal i386 COFF, we
  397.    can use the generic relocate_section routine.  For PE, we need our
  398.    own routine.  */
  399.  
  400. #ifndef COFF_WITH_PE
  401.  
  402. #define coff_relocate_section _bfd_coff_generic_relocate_section
  403.  
  404. #else /* COFF_WITH_PE */
  405.  
  406. /* The PE relocate section routine.  The only difference between this
  407.    and the regular routine is that we don't want to do anything for a
  408.    relocatable link.  */
  409.  
  410. static bfd_boolean
  411. coff_pe_i386_relocate_section (bfd *output_bfd,
  412.                                struct bfd_link_info *info,
  413.                                bfd *input_bfd,
  414.                                asection *input_section,
  415.                                bfd_byte *contents,
  416.                                struct internal_reloc *relocs,
  417.                                struct internal_syment *syms,
  418.                                asection **sections)
  419. {
  420.   if (bfd_link_relocatable (info))
  421.     return TRUE;
  422.  
  423.   return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd,
  424.                                              input_section, contents,
  425.                                              relocs, syms, sections);
  426. }
  427.  
  428. #define coff_relocate_section coff_pe_i386_relocate_section
  429.  
  430. #endif /* COFF_WITH_PE */
  431.  
  432. /* Convert an rtype to howto for the COFF backend linker.  */
  433.  
  434. static reloc_howto_type *
  435. coff_i386_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
  436.                           asection *sec,
  437.                           struct internal_reloc *rel,
  438.                           struct coff_link_hash_entry *h,
  439.                           struct internal_syment *sym,
  440.                           bfd_vma *addendp)
  441. {
  442.   reloc_howto_type *howto;
  443.  
  444.   if (rel->r_type >= NUM_HOWTOS)
  445.     {
  446.       bfd_set_error (bfd_error_bad_value);
  447.       return NULL;
  448.     }
  449.  
  450.   howto = howto_table + rel->r_type;
  451.  
  452. #ifdef COFF_WITH_PE
  453.   /* Cancel out code in _bfd_coff_generic_relocate_section.  */
  454.   *addendp = 0;
  455. #endif
  456.  
  457.   if (howto->pc_relative)
  458.     *addendp += sec->vma;
  459.  
  460.   if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
  461.     {
  462.       /* This is a common symbol.  The section contents include the
  463.          size (sym->n_value) as an addend.  The relocate_section
  464.          function will be adding in the final value of the symbol.  We
  465.          need to subtract out the current size in order to get the
  466.          correct result.  */
  467.  
  468.       BFD_ASSERT (h != NULL);
  469.  
  470. #ifndef COFF_WITH_PE
  471.       /* I think we *do* want to bypass this.  If we don't, I have
  472.          seen some data parameters get the wrong relocation address.
  473.          If I link two versions with and without this section bypassed
  474.          and then do a binary comparison, the addresses which are
  475.          different can be looked up in the map.  The case in which
  476.          this section has been bypassed has addresses which correspond
  477.          to values I can find in the map.  */
  478.       *addendp -= sym->n_value;
  479. #endif
  480.     }
  481.  
  482. #ifndef COFF_WITH_PE
  483.   /* If the output symbol is common (in which case this must be a
  484.      relocatable link), we need to add in the final size of the
  485.      common symbol.  */
  486.   if (h != NULL && h->root.type == bfd_link_hash_common)
  487.     *addendp += h->root.u.c.size;
  488. #endif
  489.  
  490. #ifdef COFF_WITH_PE
  491.   if (howto->pc_relative)
  492.     {
  493.       *addendp -= 4;
  494.  
  495.       /* If the symbol is defined, then the generic code is going to
  496.          add back the symbol value in order to cancel out an
  497.          adjustment it made to the addend.  However, we set the addend
  498.          to 0 at the start of this function.  We need to adjust here,
  499.          to avoid the adjustment the generic code will make.  FIXME:
  500.          This is getting a bit hackish.  */
  501.       if (sym != NULL && sym->n_scnum != 0)
  502.         *addendp -= sym->n_value;
  503.     }
  504.  
  505.   if (rel->r_type == R_IMAGEBASE
  506.       && (bfd_get_flavour(sec->output_section->owner)
  507.           == bfd_target_coff_flavour))
  508.     {
  509.       *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
  510.     }
  511.  
  512.   /* PR 17099 - Absolute R_PCRLONG relocations do not need a symbol.  */
  513.   if (rel->r_type == R_PCRLONG && sym == NULL)
  514.     *addendp -= rel->r_vaddr;
  515.   else
  516.   BFD_ASSERT (sym != NULL);
  517.  
  518.   if (rel->r_type == R_SECREL32 && sym != NULL)
  519.     {
  520.       bfd_vma osect_vma;
  521.  
  522.       if (h && (h->root.type == bfd_link_hash_defined
  523.                 || h->root.type == bfd_link_hash_defweak))
  524.         osect_vma = h->root.u.def.section->output_section->vma;
  525.       else
  526.         {
  527.           asection *s;
  528.           int i;
  529.  
  530.           /* Sigh, the only way to get the section to offset against
  531.              is to find it the hard way.  */
  532.  
  533.           for (s = abfd->sections, i = 1; i < sym->n_scnum; i++)
  534.             s = s->next;
  535.  
  536.           osect_vma = s->output_section->vma;
  537.         }
  538.  
  539.       *addendp -= osect_vma;
  540.     }
  541. #endif
  542.  
  543.   return howto;
  544. }
  545.  
  546. #define coff_bfd_reloc_type_lookup coff_i386_reloc_type_lookup
  547. #define coff_bfd_reloc_name_lookup coff_i386_reloc_name_lookup
  548.  
  549. static reloc_howto_type *
  550. coff_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
  551.                              bfd_reloc_code_real_type code)
  552. {
  553.   switch (code)
  554.     {
  555.     case BFD_RELOC_RVA:
  556.       return howto_table + R_IMAGEBASE;
  557.     case BFD_RELOC_32:
  558.       return howto_table + R_DIR32;
  559.     case BFD_RELOC_32_PCREL:
  560.       return howto_table + R_PCRLONG;
  561.     case BFD_RELOC_16:
  562.       return howto_table + R_RELWORD;
  563.     case BFD_RELOC_16_PCREL:
  564.       return howto_table + R_PCRWORD;
  565.     case BFD_RELOC_8:
  566.       return howto_table + R_RELBYTE;
  567.     case BFD_RELOC_8_PCREL:
  568.       return howto_table + R_PCRBYTE;
  569. #ifdef COFF_WITH_PE
  570.     case BFD_RELOC_32_SECREL:
  571.       return howto_table + R_SECREL32;
  572. #endif
  573.     default:
  574.       BFD_FAIL ();
  575.       return 0;
  576.     }
  577. }
  578.  
  579. static reloc_howto_type *
  580. coff_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
  581.                              const char *r_name)
  582. {
  583.   unsigned int i;
  584.  
  585.   for (i = 0; i < NUM_HOWTOS; i++)
  586.     if (howto_table[i].name != NULL
  587.         && strcasecmp (howto_table[i].name, r_name) == 0)
  588.       return &howto_table[i];
  589.  
  590.   return NULL;
  591. }
  592.  
  593. #define coff_rtype_to_howto coff_i386_rtype_to_howto
  594.  
  595. #ifdef TARGET_UNDERSCORE
  596.  
  597. /* If i386 gcc uses underscores for symbol names, then it does not use
  598.    a leading dot for local labels, so if TARGET_UNDERSCORE is defined
  599.    we treat all symbols starting with L as local.  */
  600.  
  601. static bfd_boolean
  602. coff_i386_is_local_label_name (bfd *abfd, const char *name)
  603. {
  604.   if (name[0] == 'L')
  605.     return TRUE;
  606.  
  607.   return _bfd_coff_is_local_label_name (abfd, name);
  608. }
  609.  
  610. #define coff_bfd_is_local_label_name coff_i386_is_local_label_name
  611.  
  612. #endif /* TARGET_UNDERSCORE */
  613.  
  614. #include "coffcode.h"
  615.  
  616. const bfd_target
  617. #ifdef TARGET_SYM
  618.   TARGET_SYM =
  619. #else
  620.   i386_coff_vec =
  621. #endif
  622. {
  623. #ifdef TARGET_NAME
  624.   TARGET_NAME,
  625. #else
  626.   "coff-i386",                  /* name */
  627. #endif
  628.   bfd_target_coff_flavour,
  629.   BFD_ENDIAN_LITTLE,            /* data byte order is little */
  630.   BFD_ENDIAN_LITTLE,            /* header byte order is little */
  631.  
  632.   (HAS_RELOC | EXEC_P |         /* object flags */
  633.    HAS_LINENO | HAS_DEBUG |
  634.    HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ),
  635.  
  636.   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
  637. #ifdef COFF_WITH_PE
  638.    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
  639. #endif
  640.    | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
  641.  
  642. #ifdef TARGET_UNDERSCORE
  643.   TARGET_UNDERSCORE,            /* leading underscore */
  644. #else
  645.   0,                            /* leading underscore */
  646. #endif
  647.   '/',                          /* ar_pad_char */
  648.   15,                           /* ar_max_namelen */
  649.   0,                            /* match priority.  */
  650.  
  651.   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
  652.      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
  653.      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
  654.   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
  655.      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
  656.      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
  657.  
  658. /* Note that we allow an object file to be treated as a core file as well.  */
  659.     /* bfd_check_format */
  660. #ifdef COFF_CHECK_FORMAT
  661.     {_bfd_dummy_target, COFF_CHECK_FORMAT,
  662.        bfd_generic_archive_p, COFF_CHECK_FORMAT},
  663. #else
  664.     {_bfd_dummy_target, coff_object_p, bfd_generic_archive_p, coff_object_p},
  665. #endif
  666.     {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
  667.        bfd_false},
  668.     {bfd_false, coff_write_object_contents, /* bfd_write_contents */
  669.        _bfd_write_archive_contents, bfd_false},
  670.  
  671.      BFD_JUMP_TABLE_GENERIC (coff),
  672.      BFD_JUMP_TABLE_COPY (coff),
  673.      BFD_JUMP_TABLE_CORE (_bfd_nocore),
  674.      BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
  675.      BFD_JUMP_TABLE_SYMBOLS (coff),
  676.      BFD_JUMP_TABLE_RELOCS (coff),
  677.      BFD_JUMP_TABLE_WRITE (coff),
  678.      BFD_JUMP_TABLE_LINK (coff),
  679.      BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
  680.  
  681.   NULL,
  682.  
  683.   COFF_SWAP_TABLE
  684. };
  685.