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  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, 2012
  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 reloc_howto_type *coff_i386_rtype_to_howto
  47.   (bfd *, asection *, struct internal_reloc *,
  48.    struct coff_link_hash_entry *, struct internal_syment *,
  49.    bfd_vma *);
  50. static reloc_howto_type *coff_i386_reloc_type_lookup
  51.   (bfd *, bfd_reloc_code_real_type);
  52.  
  53. #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
  54. /* The page size is a guess based on ELF.  */
  55.  
  56. #define COFF_PAGE_SIZE 0x1000
  57.  
  58. /* For some reason when using i386 COFF the value stored in the .text
  59.    section for a reference to a common symbol is the value itself plus
  60.    any desired offset.  Ian Taylor, Cygnus Support.  */
  61.  
  62. /* If we are producing relocatable output, we need to do some
  63.    adjustments to the object file that are not done by the
  64.    bfd_perform_relocation function.  This function is called by every
  65.    reloc type to make any required adjustments.  */
  66.  
  67. static bfd_reloc_status_type
  68. coff_i386_reloc (bfd *abfd,
  69.                  arelent *reloc_entry,
  70.                  asymbol *symbol,
  71.                  void * data,
  72.                  asection *input_section ATTRIBUTE_UNUSED,
  73.                  bfd *output_bfd,
  74.                  char **error_message ATTRIBUTE_UNUSED)
  75. {
  76.   symvalue diff;
  77.  
  78. #ifndef COFF_WITH_PE
  79.   if (output_bfd == (bfd *) NULL)
  80.     return bfd_reloc_continue;
  81. #endif
  82.  
  83.   if (bfd_is_com_section (symbol->section))
  84.     {
  85. #ifndef COFF_WITH_PE
  86.       /* We are relocating a common symbol.  The current value in the
  87.          object file is ORIG + OFFSET, where ORIG is the value of the
  88.          common symbol as seen by the object file when it was compiled
  89.          (this may be zero if the symbol was undefined) and OFFSET is
  90.          the offset into the common symbol (normally zero, but may be
  91.          non-zero when referring to a field in a common structure).
  92.          ORIG is the negative of reloc_entry->addend, which is set by
  93.          the CALC_ADDEND macro below.  We want to replace the value in
  94.          the object file with NEW + OFFSET, where NEW is the value of
  95.          the common symbol which we are going to put in the final
  96.          object file.  NEW is symbol->value.  */
  97.       diff = symbol->value + reloc_entry->addend;
  98. #else
  99.       /* In PE mode, we do not offset the common symbol.  */
  100.       diff = reloc_entry->addend;
  101. #endif
  102.     }
  103.   else
  104.     {
  105.       /* For some reason bfd_perform_relocation always effectively
  106.          ignores the addend for a COFF target when producing
  107.          relocatable output.  This seems to be always wrong for 386
  108.          COFF, so we handle the addend here instead.  */
  109. #ifdef COFF_WITH_PE
  110.       if (output_bfd == (bfd *) NULL)
  111.         {
  112.           reloc_howto_type *howto = reloc_entry->howto;
  113.  
  114.           /* Although PC relative relocations are very similar between
  115.              PE and non-PE formats, but they are off by 1 << howto->size
  116.              bytes. For the external relocation, PE is very different
  117.              from others. See md_apply_fix3 () in gas/config/tc-i386.c.
  118.              When we link PE and non-PE object files together to
  119.              generate a non-PE executable, we have to compensate it
  120.              here.  */
  121.           if (howto->pc_relative && howto->pcrel_offset)
  122.             diff = -(1 << howto->size);
  123.           else if (symbol->flags & BSF_WEAK)
  124.             diff = reloc_entry->addend - symbol->value;
  125.           else
  126.             diff = -reloc_entry->addend;
  127.         }
  128.       else
  129. #endif
  130.         diff = reloc_entry->addend;
  131.     }
  132.  
  133. #ifdef COFF_WITH_PE
  134.   /* FIXME: How should this case be handled?  */
  135.   if (reloc_entry->howto->type == R_IMAGEBASE
  136.       && output_bfd != NULL
  137.       && bfd_get_flavour(output_bfd) == bfd_target_coff_flavour)
  138.     diff -= pe_data (output_bfd)->pe_opthdr.ImageBase;
  139. #endif
  140.  
  141. #define DOIT(x) \
  142.   x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
  143.  
  144.     if (diff != 0)
  145.       {
  146.         reloc_howto_type *howto = reloc_entry->howto;
  147.         unsigned char *addr = (unsigned char *) data + reloc_entry->address;
  148.  
  149.         switch (howto->size)
  150.           {
  151.           case 0:
  152.             {
  153.               char x = bfd_get_8 (abfd, addr);
  154.               DOIT (x);
  155.               bfd_put_8 (abfd, x, addr);
  156.             }
  157.             break;
  158.  
  159.           case 1:
  160.             {
  161.               short x = bfd_get_16 (abfd, addr);
  162.               DOIT (x);
  163.               bfd_put_16 (abfd, (bfd_vma) x, addr);
  164.             }
  165.             break;
  166.  
  167.           case 2:
  168.             {
  169.               long x = bfd_get_32 (abfd, addr);
  170.               DOIT (x);
  171.               bfd_put_32 (abfd, (bfd_vma) x, addr);
  172.             }
  173.             break;
  174.  
  175.           default:
  176.             abort ();
  177.           }
  178.       }
  179.  
  180.   /* Now let bfd_perform_relocation finish everything up.  */
  181.   return bfd_reloc_continue;
  182. }
  183.  
  184. #ifdef COFF_WITH_PE
  185. /* Return TRUE if this relocation should appear in the output .reloc
  186.    section.  */
  187.  
  188. static bfd_boolean in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
  189.                                reloc_howto_type *howto)
  190. {
  191.   return ! howto->pc_relative && howto->type != R_IMAGEBASE
  192.          && howto->type != R_SECREL32;
  193. }
  194. #endif /* COFF_WITH_PE */
  195.  
  196. #ifndef PCRELOFFSET
  197. #define PCRELOFFSET FALSE
  198. #endif
  199.  
  200. static reloc_howto_type howto_table[] =
  201. {
  202.   EMPTY_HOWTO (0),
  203.   EMPTY_HOWTO (1),
  204.   EMPTY_HOWTO (2),
  205.   EMPTY_HOWTO (3),
  206.   EMPTY_HOWTO (4),
  207.   EMPTY_HOWTO (5),
  208.   HOWTO (R_DIR32,               /* type */
  209.          0,                     /* rightshift */
  210.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  211.          32,                    /* bitsize */
  212.          FALSE,                 /* pc_relative */
  213.          0,                     /* bitpos */
  214.          complain_overflow_bitfield, /* complain_on_overflow */
  215.          coff_i386_reloc,       /* special_function */
  216.          "dir32",               /* name */
  217.          TRUE,                  /* partial_inplace */
  218.          0xffffffff,            /* src_mask */
  219.          0xffffffff,            /* dst_mask */
  220.          TRUE),                 /* pcrel_offset */
  221.   /* PE IMAGE_REL_I386_DIR32NB relocation (7).  */
  222.   HOWTO (R_IMAGEBASE,           /* type */
  223.          0,                     /* rightshift */
  224.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  225.          32,                    /* bitsize */
  226.          FALSE,                 /* pc_relative */
  227.          0,                     /* bitpos */
  228.          complain_overflow_bitfield, /* complain_on_overflow */
  229.          coff_i386_reloc,       /* special_function */
  230.          "rva32",               /* name */
  231.          TRUE,                  /* partial_inplace */
  232.          0xffffffff,            /* src_mask */
  233.          0xffffffff,            /* dst_mask */
  234.          FALSE),                /* pcrel_offset */
  235.   EMPTY_HOWTO (010),
  236.   EMPTY_HOWTO (011),
  237.   EMPTY_HOWTO (012),
  238. #ifdef COFF_WITH_PE
  239.   /* 32-bit longword section relative relocation (013).  */
  240.   HOWTO (R_SECREL32,            /* type */
  241.          0,                     /* rightshift */
  242.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  243.          32,                    /* bitsize */
  244.          FALSE,                 /* pc_relative */
  245.          0,                     /* bitpos */
  246.          complain_overflow_bitfield, /* complain_on_overflow */
  247.          coff_i386_reloc,       /* special_function */
  248.          "secrel32",            /* name */
  249.          TRUE,                  /* partial_inplace */
  250.          0xffffffff,            /* src_mask */
  251.          0xffffffff,            /* dst_mask */
  252.          TRUE),                 /* pcrel_offset */
  253. #else
  254.   EMPTY_HOWTO (013),
  255. #endif
  256.   EMPTY_HOWTO (014),
  257.   EMPTY_HOWTO (015),
  258.   EMPTY_HOWTO (016),
  259.   /* Byte relocation (017).  */
  260.   HOWTO (R_RELBYTE,             /* type */
  261.          0,                     /* rightshift */
  262.          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  263.          8,                     /* bitsize */
  264.          FALSE,                 /* pc_relative */
  265.          0,                     /* bitpos */
  266.          complain_overflow_bitfield, /* complain_on_overflow */
  267.          coff_i386_reloc,       /* special_function */
  268.          "8",                   /* name */
  269.          TRUE,                  /* partial_inplace */
  270.          0x000000ff,            /* src_mask */
  271.          0x000000ff,            /* dst_mask */
  272.          PCRELOFFSET),          /* pcrel_offset */
  273.   /* 16-bit word relocation (020).  */
  274.   HOWTO (R_RELWORD,             /* type */
  275.          0,                     /* rightshift */
  276.          1,                     /* size (0 = byte, 1 = short, 2 = long) */
  277.          16,                    /* bitsize */
  278.          FALSE,                 /* pc_relative */
  279.          0,                     /* bitpos */
  280.          complain_overflow_bitfield, /* complain_on_overflow */
  281.          coff_i386_reloc,       /* special_function */
  282.          "16",                  /* name */
  283.          TRUE,                  /* partial_inplace */
  284.          0x0000ffff,            /* src_mask */
  285.          0x0000ffff,            /* dst_mask */
  286.          PCRELOFFSET),          /* pcrel_offset */
  287.   /* 32-bit longword relocation (021).  */
  288.   HOWTO (R_RELLONG,             /* type */
  289.          0,                     /* rightshift */
  290.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  291.          32,                    /* bitsize */
  292.          FALSE,                 /* pc_relative */
  293.          0,                     /* bitpos */
  294.          complain_overflow_bitfield, /* complain_on_overflow */
  295.          coff_i386_reloc,       /* special_function */
  296.          "32",                  /* name */
  297.          TRUE,                  /* partial_inplace */
  298.          0xffffffff,            /* src_mask */
  299.          0xffffffff,            /* dst_mask */
  300.          PCRELOFFSET),          /* pcrel_offset */
  301.   /* Byte PC relative relocation (022).  */
  302.   HOWTO (R_PCRBYTE,             /* type */
  303.          0,                     /* rightshift */
  304.          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  305.          8,                     /* bitsize */
  306.          TRUE,                  /* pc_relative */
  307.          0,                     /* bitpos */
  308.          complain_overflow_signed, /* complain_on_overflow */
  309.          coff_i386_reloc,       /* special_function */
  310.          "DISP8",               /* name */
  311.          TRUE,                  /* partial_inplace */
  312.          0x000000ff,            /* src_mask */
  313.          0x000000ff,            /* dst_mask */
  314.          PCRELOFFSET),          /* pcrel_offset */
  315.   /* 16-bit word PC relative relocation (023).  */
  316.   HOWTO (R_PCRWORD,             /* type */
  317.          0,                     /* rightshift */
  318.          1,                     /* size (0 = byte, 1 = short, 2 = long) */
  319.          16,                    /* bitsize */
  320.          TRUE,                  /* pc_relative */
  321.          0,                     /* bitpos */
  322.          complain_overflow_signed, /* complain_on_overflow */
  323.          coff_i386_reloc,       /* special_function */
  324.          "DISP16",              /* name */
  325.          TRUE,                  /* partial_inplace */
  326.          0x0000ffff,            /* src_mask */
  327.          0x0000ffff,            /* dst_mask */
  328.          PCRELOFFSET),          /* pcrel_offset */
  329.   /* 32-bit longword PC relative relocation (024).  */
  330.   HOWTO (R_PCRLONG,             /* type */
  331.          0,                     /* rightshift */
  332.          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  333.          32,                    /* bitsize */
  334.          TRUE,                  /* pc_relative */
  335.          0,                     /* bitpos */
  336.          complain_overflow_signed, /* complain_on_overflow */
  337.          coff_i386_reloc,       /* special_function */
  338.          "DISP32",              /* name */
  339.          TRUE,                  /* partial_inplace */
  340.          0xffffffff,            /* src_mask */
  341.          0xffffffff,            /* dst_mask */
  342.          PCRELOFFSET)           /* pcrel_offset */
  343. };
  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 < sizeof (howto_table) / sizeof (howto_table[0])      \
  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 (abfd, 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 && howto_table[reloc.r_type].pc_relative)           \
  392.       cache_ptr->addend += asect->vma;                          \
  393.   }
  394.  
  395. /* We use the special COFF backend linker.  For normal i386 COFF, we
  396.    can use the generic relocate_section routine.  For PE, we need our
  397.    own routine.  */
  398.  
  399. #ifndef COFF_WITH_PE
  400.  
  401. #define coff_relocate_section _bfd_coff_generic_relocate_section
  402.  
  403. #else /* COFF_WITH_PE */
  404.  
  405. /* The PE relocate section routine.  The only difference between this
  406.    and the regular routine is that we don't want to do anything for a
  407.    relocatable link.  */
  408.  
  409. static bfd_boolean
  410. coff_pe_i386_relocate_section (bfd *output_bfd,
  411.                                struct bfd_link_info *info,
  412.                                bfd *input_bfd,
  413.                                asection *input_section,
  414.                                bfd_byte *contents,
  415.                                struct internal_reloc *relocs,
  416.                                struct internal_syment *syms,
  417.                                asection **sections)
  418. {
  419.   if (info->relocatable)
  420.     return TRUE;
  421.  
  422.   return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd,
  423.                                              input_section, contents,
  424.                                              relocs, syms, sections);
  425. }
  426.  
  427. #define coff_relocate_section coff_pe_i386_relocate_section
  428.  
  429. #endif /* COFF_WITH_PE */
  430.  
  431. /* Convert an rtype to howto for the COFF backend linker.  */
  432.  
  433. static reloc_howto_type *
  434. coff_i386_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
  435.                           asection *sec,
  436.                           struct internal_reloc *rel,
  437.                           struct coff_link_hash_entry *h,
  438.                           struct internal_syment *sym,
  439.                           bfd_vma *addendp)
  440. {
  441.   reloc_howto_type *howto;
  442.  
  443.   if (rel->r_type >= sizeof (howto_table) / sizeof (howto_table[0]))
  444.     {
  445.       bfd_set_error (bfd_error_bad_value);
  446.       return NULL;
  447.     }
  448.  
  449.   howto = howto_table + rel->r_type;
  450.  
  451. #ifdef COFF_WITH_PE
  452.   /* Cancel out code in _bfd_coff_generic_relocate_section.  */
  453.   *addendp = 0;
  454. #endif
  455.  
  456.   if (howto->pc_relative)
  457.     *addendp += sec->vma;
  458.  
  459.   if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
  460.     {
  461.       /* This is a common symbol.  The section contents include the
  462.          size (sym->n_value) as an addend.  The relocate_section
  463.          function will be adding in the final value of the symbol.  We
  464.          need to subtract out the current size in order to get the
  465.          correct result.  */
  466.  
  467.       BFD_ASSERT (h != NULL);
  468.  
  469. #ifndef COFF_WITH_PE
  470.       /* I think we *do* want to bypass this.  If we don't, I have
  471.          seen some data parameters get the wrong relocation address.
  472.          If I link two versions with and without this section bypassed
  473.          and then do a binary comparison, the addresses which are
  474.          different can be looked up in the map.  The case in which
  475.          this section has been bypassed has addresses which correspond
  476.          to values I can find in the map.  */
  477.       *addendp -= sym->n_value;
  478. #endif
  479.     }
  480.  
  481. #ifndef COFF_WITH_PE
  482.   /* If the output symbol is common (in which case this must be a
  483.      relocatable link), we need to add in the final size of the
  484.      common symbol.  */
  485.   if (h != NULL && h->root.type == bfd_link_hash_common)
  486.     *addendp += h->root.u.c.size;
  487. #endif
  488.  
  489. #ifdef COFF_WITH_PE
  490.   if (howto->pc_relative)
  491.     {
  492.       *addendp -= 4;
  493.  
  494.       /* If the symbol is defined, then the generic code is going to
  495.          add back the symbol value in order to cancel out an
  496.          adjustment it made to the addend.  However, we set the addend
  497.          to 0 at the start of this function.  We need to adjust here,
  498.          to avoid the adjustment the generic code will make.  FIXME:
  499.          This is getting a bit hackish.  */
  500.       if (sym != NULL && sym->n_scnum != 0)
  501.         *addendp -= sym->n_value;
  502.     }
  503.  
  504.   if (rel->r_type == R_IMAGEBASE
  505.       && (bfd_get_flavour(sec->output_section->owner)
  506.           == bfd_target_coff_flavour))
  507.     {
  508.       *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
  509.     }
  510.  
  511.   BFD_ASSERT (sym != NULL);
  512.   if (rel->r_type == R_SECREL32 && sym != NULL)
  513.     {
  514.       bfd_vma osect_vma;
  515.  
  516.       if (h && (h->root.type == bfd_link_hash_defined
  517.                 || h->root.type == bfd_link_hash_defweak))
  518.         osect_vma = h->root.u.def.section->output_section->vma;
  519.       else
  520.         {
  521.           asection *s;
  522.           int i;
  523.  
  524.           /* Sigh, the only way to get the section to offset against
  525.              is to find it the hard way.  */
  526.  
  527.           for (s = abfd->sections, i = 1; i < sym->n_scnum; i++)
  528.             s = s->next;
  529.  
  530.           osect_vma = s->output_section->vma;
  531.         }
  532.  
  533.       *addendp -= osect_vma;
  534.     }
  535. #endif
  536.  
  537.   return howto;
  538. }
  539.  
  540. #define coff_bfd_reloc_type_lookup coff_i386_reloc_type_lookup
  541. #define coff_bfd_reloc_name_lookup coff_i386_reloc_name_lookup
  542.  
  543. static reloc_howto_type *
  544. coff_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
  545.                              bfd_reloc_code_real_type code)
  546. {
  547.   switch (code)
  548.     {
  549.     case BFD_RELOC_RVA:
  550.       return howto_table + R_IMAGEBASE;
  551.     case BFD_RELOC_32:
  552.       return howto_table + R_DIR32;
  553.     case BFD_RELOC_32_PCREL:
  554.       return howto_table + R_PCRLONG;
  555.     case BFD_RELOC_16:
  556.       return howto_table + R_RELWORD;
  557.     case BFD_RELOC_16_PCREL:
  558.       return howto_table + R_PCRWORD;
  559.     case BFD_RELOC_8:
  560.       return howto_table + R_RELBYTE;
  561.     case BFD_RELOC_8_PCREL:
  562.       return howto_table + R_PCRBYTE;
  563. #ifdef COFF_WITH_PE
  564.     case BFD_RELOC_32_SECREL:
  565.       return howto_table + R_SECREL32;
  566. #endif
  567.     default:
  568.       BFD_FAIL ();
  569.       return 0;
  570.     }
  571. }
  572.  
  573. static reloc_howto_type *
  574. coff_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
  575.                              const char *r_name)
  576. {
  577.   unsigned int i;
  578.  
  579.   for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
  580.     if (howto_table[i].name != NULL
  581.         && strcasecmp (howto_table[i].name, r_name) == 0)
  582.       return &howto_table[i];
  583.  
  584.   return NULL;
  585. }
  586.  
  587. #define coff_rtype_to_howto coff_i386_rtype_to_howto
  588.  
  589. #ifdef TARGET_UNDERSCORE
  590.  
  591. /* If i386 gcc uses underscores for symbol names, then it does not use
  592.    a leading dot for local labels, so if TARGET_UNDERSCORE is defined
  593.    we treat all symbols starting with L as local.  */
  594.  
  595. static bfd_boolean
  596. coff_i386_is_local_label_name (bfd *abfd, const char *name)
  597. {
  598.   if (name[0] == 'L')
  599.     return TRUE;
  600.  
  601.   return _bfd_coff_is_local_label_name (abfd, name);
  602. }
  603.  
  604. #define coff_bfd_is_local_label_name coff_i386_is_local_label_name
  605.  
  606. #endif /* TARGET_UNDERSCORE */
  607.  
  608. #include "coffcode.h"
  609.  
  610. #define _bfd_generic_find_nearest_line_discriminator \
  611.         coff_find_nearest_line_discriminator
  612.  
  613. const bfd_target
  614. #ifdef TARGET_SYM
  615.   TARGET_SYM =
  616. #else
  617.   i386coff_vec =
  618. #endif
  619. {
  620. #ifdef TARGET_NAME
  621.   TARGET_NAME,
  622. #else
  623.   "coff-i386",                  /* name */
  624. #endif
  625.   bfd_target_coff_flavour,
  626.   BFD_ENDIAN_LITTLE,            /* data byte order is little */
  627.   BFD_ENDIAN_LITTLE,            /* header byte order is little */
  628.  
  629.   (HAS_RELOC | EXEC_P |         /* object flags */
  630.    HAS_LINENO | HAS_DEBUG |
  631.    HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ),
  632.  
  633.   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
  634. #ifdef COFF_WITH_PE
  635.    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
  636. #endif
  637.    | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
  638.  
  639. #ifdef TARGET_UNDERSCORE
  640.   TARGET_UNDERSCORE,            /* leading underscore */
  641. #else
  642.   0,                            /* leading underscore */
  643. #endif
  644.   '/',                          /* ar_pad_char */
  645.   15,                           /* ar_max_namelen */
  646.   0,                            /* match priority.  */
  647.  
  648.   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
  649.      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
  650.      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
  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, /* hdrs */
  654.  
  655. /* Note that we allow an object file to be treated as a core file as well.  */
  656.     /* bfd_check_format */
  657. #ifdef COFF_CHECK_FORMAT
  658.     {_bfd_dummy_target, COFF_CHECK_FORMAT,
  659.        bfd_generic_archive_p, COFF_CHECK_FORMAT},
  660. #else
  661.     {_bfd_dummy_target, coff_object_p, bfd_generic_archive_p, coff_object_p},
  662. #endif
  663.     {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
  664.        bfd_false},
  665.     {bfd_false, coff_write_object_contents, /* bfd_write_contents */
  666.        _bfd_write_archive_contents, bfd_false},
  667.  
  668.      BFD_JUMP_TABLE_GENERIC (coff),
  669.      BFD_JUMP_TABLE_COPY (coff),
  670.      BFD_JUMP_TABLE_CORE (_bfd_nocore),
  671.      BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
  672.      BFD_JUMP_TABLE_SYMBOLS (coff),
  673.      BFD_JUMP_TABLE_RELOCS (coff),
  674.      BFD_JUMP_TABLE_WRITE (coff),
  675.      BFD_JUMP_TABLE_LINK (coff),
  676.      BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
  677.  
  678.   NULL,
  679.  
  680.   COFF_SWAP_TABLE
  681. };
  682.