Subversion Repositories openrisc_2011-10-31

/* BFD back-end for Apple M68K COFF A/UX 3.x files.

   Copyright 1996, 1997, 2000, 2002, 2007 Free Software Foundation, Inc.

   Written by Richard Henderson <rth@tamu.edu>.

   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 3 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., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

#define TARGET_SYM      m68kaux_coff_vec

#define TARGET_NAME     "coff-m68k-aux"

#ifndef TARG_AUX

#define TARG_AUX

#endif

#define COFF_LONG_FILENAMES

/* 4k pages */

#define COFF_PAGE_SIZE 0x1000

/* On AUX, a STYP_NOLOAD|STYP_BSS section is part of a shared library.  */

#define BSS_NOLOAD_IS_SHARED_LIBRARY

#define STATIC_RELOCS

#define COFF_COMMON_ADDEND

#include "sysdep.h"

#include "bfd.h"

static bfd_boolean coff_m68k_aux_link_add_one_symbol

  PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,

           asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,

           struct bfd_link_hash_entry **));

#define coff_link_add_one_symbol coff_m68k_aux_link_add_one_symbol

#include "coff/aux-coff.h"  /* override coff/internal.h and coff/m68k.h */

#include "coff-m68k.c"

/* We need non-absolute symbols to override absolute symbols.  This

   mirrors Apple's "solution" to let a static library symbol override

   a shared library symbol.  On the whole not a good thing, given how

   shared libraries work here, but can work if you are careful with

   what you include in the shared object.  */

static bfd_boolean

coff_m68k_aux_link_add_one_symbol (info, abfd, name, flags, section, value,

                                   string, copy, collect, hashp)

     struct bfd_link_info *info;

     bfd *abfd;

     const char *name;

     flagword flags;

     asection *section;

     bfd_vma value;

     const char *string;

     bfd_boolean copy;

     bfd_boolean collect;

     struct bfd_link_hash_entry **hashp;

{

  struct bfd_link_hash_entry *h;

  if ((flags & (BSF_WARNING | BSF_CONSTRUCTOR | BSF_WEAK)) == 0 &&

      !bfd_is_und_section (section) &&

      !bfd_is_com_section (section))

    {

      /* The new symbol is a definition or an indirect definition */

      /* This bit copied from linker.c */

      if (hashp != NULL && *hashp != NULL)

        {

          h = *hashp;

          BFD_ASSERT (strcmp (h->root.string, name) == 0);

        }

      else

        {

          h = bfd_link_hash_lookup (info->hash, name, TRUE, copy, FALSE);

          if (h == NULL)

            {

              if (hashp != NULL)

                *hashp = NULL;

              return FALSE;

            }

        }

      if (info->notice_hash != (struct bfd_hash_table *) NULL

          && (bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE)

              != (struct bfd_hash_entry *) NULL))

        {

          if (! (*info->callbacks->notice) (info, name, abfd, section, value))

            return FALSE;

        }

      if (hashp != (struct bfd_link_hash_entry **) NULL)

        *hashp = h;

      /* end duplication from linker.c */

      if (h->type == bfd_link_hash_defined

          || h->type == bfd_link_hash_indirect)

        {

          asection *msec;

          if (h->type == bfd_link_hash_defined)

            msec = h->u.def.section;

          else

            msec = bfd_ind_section_ptr;

          if (bfd_is_abs_section (msec) && !bfd_is_abs_section (section))

            {

              h->u.def.section = section;

              h->u.def.value = value;

              return TRUE;

            }

          else if (bfd_is_abs_section (section) && !bfd_is_abs_section (msec))

            return TRUE;

        }

    }

  /* If we didn't exit early, finish processing in the generic routine */

  return _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,

                                           value, string, copy, collect,

                                           hashp);

}