armelf_oabi.em

来自「基于4个mips核的noc设计」· EM 代码 · 共 179 行

# This shell script emits a C file. -*- C -*-
# It does some substitutions.
cat >e${EMULATION_NAME}.c <<EOF
/* This file is is generated by a shell script.  DO NOT EDIT! */

/* emulate the original gld for the given ${EMULATION_NAME}
   Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000
   Free Software Foundation, Inc.
   Written by Steve Chamberlain [e-mail]

This file is part of GLD, the Gnu Linker.

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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#define TARGET_IS_${EMULATION_NAME}

#define bfd_elf32_arm_allocate_interworking_sections \
	bfd_elf32_arm_oabi_allocate_interworking_sections
#define bfd_elf32_arm_get_bfd_for_interworking \
	bfd_elf32_arm_oabi_get_bfd_for_interworking
#define bfd_elf32_arm_process_before_allocation \
	bfd_elf32_arm_oabi_process_before_allocation

#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "getopt.h"

#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"

#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldemul.h"

static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));

static void
gld${EMULATION_NAME}_before_parse ()
{
#ifndef TARGET_			/* I.e., if not generic.  */
  ldfile_set_output_arch ("`echo ${ARCH}`");
#endif /* not TARGET_ */
}

/* This is called after the sections have been attached to output
   sections, but before any sizes or addresses have been set.  */

static void
gld${EMULATION_NAME}_before_allocation ()
{
  /* we should be able to set the size of the interworking stub section */

  /* Here we rummage through the found bfds to collect glue information */
  /* FIXME: should this be based on a command line option? [e-mail] */
  {
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, &link_info, 0))
	  {
	    /* xgettext:c-format */
	    einfo (_("Errors encountered processing file %s"), is->filename);
	  }
      }
  }

  /* We have seen it all. Allocate it, and carry on */
  bfd_elf32_arm_allocate_interworking_sections (& link_info);
}

static void
gld${EMULATION_NAME}_after_open ()
{

  LANG_FOR_EACH_INPUT_STATEMENT (is)
    {
      /* The interworking bfd must be the last one to be processed */
      if (!is->next)
         bfd_elf32_arm_get_bfd_for_interworking (is->the_bfd, & link_info);
    }
}

static char *
gld${EMULATION_NAME}_get_script (isfile)
     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"

cat >>e${EMULATION_NAME}.c <<EOF
{			     
  *isfile = 0;

  if (link_info.relocateable == true && config.build_constructors == true)
    return
EOF
sed $sc ldscripts/${EMULATION_NAME}.xu                     >> e${EMULATION_NAME}.c
echo '  ; else if (link_info.relocateable == true) return' >> e${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.

cat >>e${EMULATION_NAME}.c <<EOF
{			     
  *isfile = 1;

  if (link_info.relocateable == true && config.build_constructors == true)
    return "ldscripts/${EMULATION_NAME}.xu";
  else if (link_info.relocateable == true)
    return "ldscripts/${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

cat >>e${EMULATION_NAME}.c <<EOF

struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 
{
  gld${EMULATION_NAME}_before_parse,
  syslib_default,
  hll_default,
  after_parse_default,
  gld${EMULATION_NAME}_after_open,
  after_allocation_default,
  set_output_arch_default,
  ldemul_default_target,
  gld${EMULATION_NAME}_before_allocation,
  gld${EMULATION_NAME}_get_script,
  "${EMULATION_NAME}",
  "${OUTPUT_FORMAT}",
  NULL,	/* finish */
  NULL,	/* create output section statements */
  NULL,	/* open dynamic archive */
  NULL,	/* place orphan */
  NULL,	/* set symbols */
  NULL,	/* parse args */
  NULL,	/* unrecognized file */
  NULL,	/* list options */
  NULL,	/* recognized file */
  NULL 	/* find_potential_libraries */
};
EOF