coff-i386.c

早期freebsd实现

/* BFD back-end for Intel 386 COFF files.
   Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
   Written by Cygnus Support.

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "obstack.h"
#include "coff/i386.h"
#include "coff/internal.h"
#include "libcoff.h"


static reloc_howto_type howto_table[] = 
{
    {0},
    {1},
    {2},
    {3},
    {4},
    {5},
  HOWTO(R_DIR32,	       0,  2, 	32, false, 0, true,true,0,"dir32",	true, 0xffffffff,0xffffffff, false),
    {7},
    {010},
    {011},
    {012},
    {013},
    {014},
    {015},
    {016},
  HOWTO(R_RELBYTE,	       0,  0,  	8,  false, 0, true,  true,0,"8",	true, 0x000000ff,0x000000ff, false),
  HOWTO(R_RELWORD,	       0,  1, 	16, false, 0, true,  true,0,"16",	true, 0x0000ffff,0x0000ffff, false),
  HOWTO(R_RELLONG,	       0,  2, 	32, false, 0, true,  true,0,"32",	true, 0xffffffff,0xffffffff, false),
  HOWTO(R_PCRBYTE,	       0,  0, 	8,  true,  0, false, true,0,"DISP8",    true, 0x000000ff,0x000000ff, false),
  HOWTO(R_PCRWORD,	       0,  1, 	16, true,  0, false, true,0,"DISP16",   true, 0x0000ffff,0x0000ffff, false),
  HOWTO(R_PCRLONG,	       0,  2, 	32, true,  0, false, true,0,"DISP32",   true, 0xffffffff,0xffffffff, false),
};

/* Turn a howto into a reloc  nunmber */

#define SELECT_RELOC(x,howto) { x = howto->type; }
#define BADMAG(x) I386BADMAG(x)
#define I386 1			/* Customize coffcode.h */

#define RTYPE2HOWTO(cache_ptr, dst) \
	    cache_ptr->howto = howto_table + (dst)->r_type;

#include "coffcode.h"

#define coff_write_armap bsd_write_armap

bfd_target *i3coff_object_p(a)
bfd *a ;
{ return coff_object_p(a); }

bfd_target i386coff_vec =
{
  "coff-i386",			/* name */
  bfd_target_coff_flavour,
  false,			/* data byte order is little */
  false,			/* header byte order is little */

  (HAS_RELOC | EXEC_P |		/* object flags */
   HAS_LINENO | HAS_DEBUG |
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),

  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
  0,				/* leading underscore */
  '/',				/* ar_pad_char */
  15,				/* ar_max_namelen */

  2,				/* minimum alignment power */
  _do_getl64, _do_putl64,  _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
  _do_getl64, _do_putl64,  _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */

/* Note that we allow an object file to be treated as a core file as well. */
    {_bfd_dummy_target, i3coff_object_p, /* bfd_check_format */
       bfd_generic_archive_p, i3coff_object_p},
    {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
       bfd_false},
    {bfd_false, coff_write_object_contents, /* bfd_write_contents */
       _bfd_write_archive_contents, bfd_false},

  JUMP_TABLE(coff),
  COFF_SWAP_TABLE
  };