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[/] [or1k/] [trunk/] [insight/] [bfd/] [coff-ia64.c] - Blame information for rev 1776

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1 578 markom
/* BFD back-end for HP/Intel IA-64 COFF files.
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   Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
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   Contributed by David Mosberger <davidm@hpl.hp.com>
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "coff/ia64.h"
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#include "coff/internal.h"
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#include "coff/pe.h"
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#include "libcoff.h"
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
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/* The page size is a guess based on ELF.  */
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#define COFF_PAGE_SIZE 0x1000
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static reloc_howto_type howto_table[] =
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{
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  EMPTY_HOWTO (0),
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};
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#define BADMAG(x) IA64BADMAG(x)
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#define IA64 1                  /* Customize coffcode.h */
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#ifdef COFF_WITH_pep
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# undef AOUTSZ
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# define AOUTSZ         PEPAOUTSZ
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# define PEAOUTHDR      PEPAOUTHDR
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#endif
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#define RTYPE2HOWTO(cache_ptr, dst) \
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            (cache_ptr)->howto = howto_table + (dst)->r_type;
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#ifdef COFF_WITH_PE
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/* Return true if this relocation should
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   appear in the output .reloc section.  */
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static boolean
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in_reloc_p(abfd, howto)
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     bfd * abfd ATTRIBUTE_UNUSED;
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     reloc_howto_type *howto ATTRIBUTE_UNUSED;
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{
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  return 0;                      /* We don't do relocs for now...  */
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}
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#endif
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#include "coffcode.h"
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static const bfd_target *
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ia64coff_object_p (abfd)
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     bfd *abfd;
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{
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#ifdef COFF_IMAGE_WITH_PE
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  {
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    struct external_PEI_DOS_hdr dos_hdr;
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    struct external_PEI_IMAGE_hdr image_hdr;
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    file_ptr offset;
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    if (bfd_seek (abfd, 0x00, SEEK_SET) != 0
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        || bfd_read (&dos_hdr, 1, sizeof (dos_hdr), abfd)
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           != sizeof (dos_hdr))
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      {
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        if (bfd_get_error () != bfd_error_system_call)
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          bfd_set_error (bfd_error_wrong_format);
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        return NULL;
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      }
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    /* There are really two magic numbers involved; the magic number
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       that says this is a NT executable (PEI) and the magic number
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       that determines the architecture.  The former is DOSMAGIC,
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       stored in the e_magic field.  The latter is stored in the
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       f_magic field.  If the NT magic number isn't valid, the
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       architecture magic number could be mimicked by some other
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       field (specifically, the number of relocs in section 3).  Since
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       this routine can only be called correctly for a PEI file, check
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       the e_magic number here, and, if it doesn't match, clobber the
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       f_magic number so that we don't get a false match.  */
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    if (bfd_h_get_16 (abfd, (bfd_byte *) dos_hdr.e_magic) != DOSMAGIC)
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      {
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        bfd_set_error (bfd_error_wrong_format);
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        return NULL;
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      }
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    offset = bfd_h_get_32 (abfd, (bfd_byte *) dos_hdr.e_lfanew);
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    if (bfd_seek (abfd, (file_ptr) offset, SEEK_SET) != 0
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        || bfd_read (&image_hdr, 1, sizeof (image_hdr), abfd)
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           != sizeof (image_hdr))
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      {
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        if (bfd_get_error () != bfd_error_system_call)
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          bfd_set_error (bfd_error_wrong_format);
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        return NULL;
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      }
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    if (bfd_h_get_32 (abfd, (bfd_byte *) image_hdr.nt_signature)
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        != 0x4550)
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      {
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        bfd_set_error (bfd_error_wrong_format);
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        return NULL;
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      }
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    /* Here is the hack.  coff_object_p wants to read filhsz bytes to
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       pick up the COFF header for PE, see "struct external_PEI_filehdr"
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       in include/coff/pe.h.  We adjust so that that will work. */
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    if (bfd_seek (abfd,
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                  (file_ptr) (offset - sizeof (dos_hdr)),
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                  SEEK_SET)
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        != 0)
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      {
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        if (bfd_get_error () != bfd_error_system_call)
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          bfd_set_error (bfd_error_wrong_format);
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        return NULL;
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      }
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  }
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#endif
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  return coff_object_p (abfd);
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}
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const bfd_target
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#ifdef TARGET_SYM
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  TARGET_SYM =
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#else
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  ia64coff_vec =
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#endif
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{
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#ifdef TARGET_NAME
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  TARGET_NAME,
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#else
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  "coff-ia64",                  /* name */
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#endif
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  bfd_target_coff_flavour,
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  BFD_ENDIAN_LITTLE,            /* data byte order is little */
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  BFD_ENDIAN_LITTLE,            /* header byte order is little */
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  (HAS_RELOC | EXEC_P |         /* object flags */
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   HAS_LINENO | HAS_DEBUG |
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   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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#ifndef COFF_WITH_PE
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  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
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   | SEC_CODE | SEC_DATA),
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#else
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  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
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   | SEC_CODE | SEC_DATA
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   | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
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#endif
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#ifdef TARGET_UNDERSCORE
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  TARGET_UNDERSCORE,            /* leading underscore */
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#else
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  0,                             /* leading underscore */
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#endif
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  '/',                          /* ar_pad_char */
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  15,                           /* ar_max_namelen */
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  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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     bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
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  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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     bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
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/* Note that we allow an object file to be treated as a core file as well.  */
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    {_bfd_dummy_target, ia64coff_object_p, /* bfd_check_format */
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       bfd_generic_archive_p, ia64coff_object_p},
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    {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
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       bfd_false},
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    {bfd_false, coff_write_object_contents, /* bfd_write_contents */
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       _bfd_write_archive_contents, bfd_false},
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     BFD_JUMP_TABLE_GENERIC (coff),
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     BFD_JUMP_TABLE_COPY (coff),
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     BFD_JUMP_TABLE_CORE (_bfd_nocore),
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     BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
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     BFD_JUMP_TABLE_SYMBOLS (coff),
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     BFD_JUMP_TABLE_RELOCS (coff),
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     BFD_JUMP_TABLE_WRITE (coff),
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     BFD_JUMP_TABLE_LINK (coff),
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     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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  NULL,
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  COFF_SWAP_TABLE
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};

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