Subversion Repositories open8_urisc

# This shell script emits a C file. -*- C -*-

# It does some substitutions.

fragment <

/* This file is is generated by a shell script.  DO NOT EDIT! */

/* Handle embedded relocs for m68k.

   Copyright 2000, 2002, 2003, 2004, 2005, 2007, 2008

   Free Software Foundation, Inc.

   Written by Michael Sokolov , based on generic.em

   by Steve Chamberlain , embedded relocs code based on

   mipsecoff.em by Ian Lance Taylor .

   This file is part of the GNU Binutils.

   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_IS_${EMULATION_NAME}

#include "sysdep.h"

#include "bfd.h"

#include "bfdlink.h"

#include "ld.h"

#include "ldmain.h"

#include "ldexp.h"

#include "ldlang.h"

#include "ldfile.h"

#include "ldemul.h"

#include "ldmisc.h"

static void check_sections (bfd *, asection *, void *);

static void

gld${EMULATION_NAME}_before_parse (void)

{

#ifndef TARGET_                 /* I.e., if not generic.  */

  ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);

#endif /* not TARGET_ */

}

/* This function is run after all the input files have been opened.

   We create a .emreloc section for each input file with a non zero

   .data section.  The BFD backend will fill in these sections with

   magic numbers which can be used to relocate the data section at run

   time.  */

static void

gld${EMULATION_NAME}_after_open (void)

{

  bfd *abfd;

  after_open_default ();

  if (! command_line.embedded_relocs

      || link_info.relocatable)

    return;

  for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)

    {

      asection *datasec;

      /* As first-order business, make sure that each input BFD is COFF. It

         better be, as we are directly calling a COFF backend function.  */

      if (bfd_get_flavour (abfd) != bfd_target_coff_flavour)

        einfo ("%F%B: all input objects must be COFF for --embedded-relocs\n");

      datasec = bfd_get_section_by_name (abfd, ".data");

      /* Note that we assume that the reloc_count field has already

         been set up.  We could call bfd_get_reloc_upper_bound, but

         that returns the size of a memory buffer rather than a reloc

         count.  We do not want to call bfd_canonicalize_reloc,

         because although it would always work it would force us to

         read in the relocs into BFD canonical form, which would waste

         a significant amount of time and memory.  */

      if (datasec != NULL && datasec->reloc_count > 0)

        {

          asection *relsec;

          relsec = bfd_make_section_with_flags (abfd, ".emreloc",

                                                (SEC_ALLOC

                                                 | SEC_LOAD

                                                 | SEC_HAS_CONTENTS

                                                 | SEC_IN_MEMORY));

          if (relsec == NULL

              || ! bfd_set_section_alignment (abfd, relsec, 2)

              || ! bfd_set_section_size (abfd, relsec,

                                         datasec->reloc_count * 12))

            einfo ("%F%B: can not create .emreloc section: %E\n");

        }

      /* Double check that all other data sections are empty, as is

         required for embedded PIC code.  */

      bfd_map_over_sections (abfd, check_sections, datasec);

    }

}

/* Check that of the data sections, only the .data section has

   relocs.  This is called via bfd_map_over_sections.  */

static void

check_sections (bfd *abfd, asection *sec, void *datasec)

{

  if ((bfd_get_section_flags (abfd, sec) & SEC_DATA)

      && sec != datasec

      && sec->reloc_count != 0)

    einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n",

           abfd, bfd_get_section_name (abfd, sec));

}

/* This function is called after the section sizes and offsets have

   been set.  If we are generating embedded relocs, it calls a special

   BFD backend routine to do the work.  */

static void

gld${EMULATION_NAME}_after_allocation (void)

{

  bfd *abfd;

  if (! command_line.embedded_relocs

      || link_info.relocatable)

    return;

  for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)

    {

      asection *datasec, *relsec;

      char *errmsg;

      datasec = bfd_get_section_by_name (abfd, ".data");

      if (datasec == NULL || datasec->reloc_count == 0)

        continue;

      relsec = bfd_get_section_by_name (abfd, ".emreloc");

      ASSERT (relsec != NULL);

      if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info,

                                                   datasec, relsec,

                                                   &errmsg))

        {

          if (errmsg == NULL)

            einfo ("%B%X: can not create runtime reloc information: %E\n",

                   abfd);

          else

            einfo ("%X%B: can not create runtime reloc information: %s\n",

                   abfd, errmsg);

        }

    }

}

static char *

gld${EMULATION_NAME}_get_script (int *isfile)

EOF

if test -n "$COMPILE_IN"

then

# Scripts compiled in.

# sed commands to quote an ld script as a C string.

sc="-f stringify.sed"

fragment <

{

  *isfile = 0;

  if (link_info.relocatable && config.build_constructors)

    return

EOF

sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c

echo '  ; else if (link_info.relocatable) return'     >> e${EMULATION_NAME}.c

sed $sc ldscripts/${EMULATION_NAME}.xr                 >> e${EMULATION_NAME}.c

echo '  ; else if (!config.text_read_only) return'     >> e${EMULATION_NAME}.c

sed $sc ldscripts/${EMULATION_NAME}.xbn                >> e${EMULATION_NAME}.c

echo '  ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c

sed $sc ldscripts/${EMULATION_NAME}.xn                 >> e${EMULATION_NAME}.c

echo '  ; else return'                                 >> e${EMULATION_NAME}.c

sed $sc ldscripts/${EMULATION_NAME}.x                  >> e${EMULATION_NAME}.c

echo '; }'                                             >> e${EMULATION_NAME}.c

else

# Scripts read from the filesystem.

fragment <

{

  *isfile = 1;

  if (link_info.relocatable && config.build_constructors)

    return "ldscripts/${EMULATION_NAME}.xu";

  else if (link_info.relocatable)

    return "ldscripts/${EMULATION_NAME}.xr";

  else if (!config.text_read_only)

    return "ldscripts/${EMULATION_NAME}.xbn";

  else if (!config.magic_demand_paged)

    return "ldscripts/${EMULATION_NAME}.xn";

  else

    return "ldscripts/${EMULATION_NAME}.x";

}

EOF

fi

fragment <

struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =

{

  gld${EMULATION_NAME}_before_parse,

  syslib_default,

  hll_default,

  after_parse_default,

  gld${EMULATION_NAME}_after_open,

  gld${EMULATION_NAME}_after_allocation,

  set_output_arch_default,

  ldemul_default_target,

  before_allocation_default,

  gld${EMULATION_NAME}_get_script,

  "${EMULATION_NAME}",

  "${OUTPUT_FORMAT}",

  finish_default,

  NULL, /* create output section statements */

  NULL, /* open dynamic archive */

  NULL, /* place orphan */

  NULL, /* set symbols */

  NULL, /* parse args */

  NULL, /* add_options */

  NULL, /* handle_option */

  NULL, /* unrecognized file */

  NULL, /* list options */

  NULL, /* recognized file */

  NULL, /* find_potential_libraries */

  NULL  /* new_vers_pattern */

};

EOF