[deliverable/binutils-gdb.git] / ld / emultempl / m68kcoff.em

# This shell script emits a C file. -*- C -*-
# It does some substitutions.
fragment <<EOF
/* 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 <msokolov@ivan.Harhan.ORG>, based on generic.em
   by Steve Chamberlain <steve@cygnus.com>, embedded relocs code based on
   mipsecoff.em by Ian Lance Taylor <ian@cygnus.com>.

   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 <<EOF
{
  *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 <<EOF
{
  *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 <<EOF

struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
  gld${EMULATION_NAME}_before_parse,
  syslib_default,
  hll_default,
  after_parse_default,
  gld${EMULATION_NAME}_after_open,
  gld${EMULATION_NAME}_after_allocation,
  set_output_arch_default,
  ldemul_default_target,
  before_allocation_default,
  gld${EMULATION_NAME}_get_script,
  "${EMULATION_NAME}",
  "${OUTPUT_FORMAT}",
  finish_default,
  NULL,	/* create output section statements */
  NULL,	/* open dynamic archive */
  NULL,	/* place orphan */
  NULL,	/* set symbols */
  NULL,	/* parse args */
  NULL,	/* add_options */
  NULL,	/* handle_option */
  NULL,	/* unrecognized file */
  NULL,	/* list options */
  NULL,	/* recognized file */
  NULL,	/* find_potential_libraries */
  NULL	/* new_vers_pattern */
};
EOF
Commit	Line	Data
20bccb34 NC	1	# This shell script emits a C file. -- C --
20bccb34 NC	2	# It does some substitutions.
92b93329	3	fragment <<EOF
20bccb34 NC	4	/* This file is is generated by a shell script. DO NOT EDIT! */
	5
	6	/* Handle embedded relocs for m68k.
9795b468	7	Copyright 2000, 2002, 2003, 2004, 2005, 2007, 2008
3db64b00	8	Free Software Foundation, Inc.
20bccb34 NC	9	Written by Michael Sokolov <msokolov@ivan.Harhan.ORG>, based on generic.em
	10	by Steve Chamberlain <steve@cygnus.com>, embedded relocs code based on
	11	mipsecoff.em by Ian Lance Taylor <ian@cygnus.com>.
	12
f96b4a7b NC	13	This file is part of the GNU Binutils.
	14
	15	This program is free software; you can redistribute it and/or modify
	16	it under the terms of the GNU General Public License as published by
	17	the Free Software Foundation; either version 3 of the License, or
	18	(at your option) any later version.
	19
	20	This program is distributed in the hope that it will be useful,
	21	but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	GNU General Public License for more details.
	24
	25	You should have received a copy of the GNU General Public License
	26	along with this program; if not, write to the Free Software
	27	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	28	MA 02110-1301, USA. */
20bccb34 NC	29
	30	#define TARGET_IS_${EMULATION_NAME}
	31
20bccb34	32	#include "sysdep.h"
3db64b00	33	#include "bfd.h"
20bccb34 NC	34	#include "bfdlink.h"
	35
	36	#include "ld.h"
	37	#include "ldmain.h"
187ffe95 NC	38	#include "ldexp.h"
187ffe95 NC	39	#include "ldlang.h"
20bccb34	40	#include "ldfile.h"
41392f03	41	#include "ldemul.h"
20bccb34 NC	42	#include "ldmisc.h"
20bccb34 NC	43
0c7a8e5a	44	static void check_sections (bfd , asection , void *);
20bccb34 NC	45
20bccb34 NC	46	static void
0c7a8e5a	47	gld${EMULATION_NAME}_before_parse (void)
20bccb34 NC	48	{
20bccb34 NC	49	#ifndef TARGET_ /* I.e., if not generic. */
5e2f1575	50	ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
20bccb34 NC	51	#endif /* not TARGET_ */
	52	}
	53
	54	/* This function is run after all the input files have been opened.
	55	We create a .emreloc section for each input file with a non zero
	56	.data section. The BFD backend will fill in these sections with
	57	magic numbers which can be used to relocate the data section at run
	58	time. */
	59
	60	static void
0c7a8e5a	61	gld${EMULATION_NAME}_after_open (void)
20bccb34 NC	62	{
	63	bfd *abfd;
	64
5c3049d2 AM	65	after_open_default ();
5c3049d2 AM	66
20bccb34	67	if (! command_line.embedded_relocs
1049f94e	68	\|\| link_info.relocatable)
20bccb34 NC	69	return;
	70
	71	for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
	72	{
	73	asection *datasec;
	74
	75	/* As first-order business, make sure that each input BFD is COFF. It
	76	better be, as we are directly calling a COFF backend function. */
	77	if (bfd_get_flavour (abfd) != bfd_target_coff_flavour)
	78	einfo ("%F%B: all input objects must be COFF for --embedded-relocs\n");
	79
	80	datasec = bfd_get_section_by_name (abfd, ".data");
	81
	82	/* Note that we assume that the reloc_count field has already
	83	been set up. We could call bfd_get_reloc_upper_bound, but
	84	that returns the size of a memory buffer rather than a reloc
	85	count. We do not want to call bfd_canonicalize_reloc,
	86	because although it would always work it would force us to
	87	read in the relocs into BFD canonical form, which would waste
	88	a significant amount of time and memory. */
	89	if (datasec != NULL && datasec->reloc_count > 0)
	90	{
	91	asection *relsec;
	92
9795b468 AM	93	relsec = bfd_make_section_with_flags (abfd, ".emreloc",
	94	(SEC_ALLOC
	95	\| SEC_LOAD
	96	\| SEC_HAS_CONTENTS
	97	\| SEC_IN_MEMORY));
20bccb34	98	if (relsec == NULL
20bccb34 NC	99	\|\| ! bfd_set_section_alignment (abfd, relsec, 2)
	100	\|\| ! bfd_set_section_size (abfd, relsec,
	101	datasec->reloc_count * 12))
	102	einfo ("%F%B: can not create .emreloc section: %E\n");
	103	}
	104
	105	/* Double check that all other data sections are empty, as is
	106	required for embedded PIC code. */
1579bae1	107	bfd_map_over_sections (abfd, check_sections, datasec);
20bccb34 NC	108	}
	109	}
	110
	111	/* Check that of the data sections, only the .data section has
	112	relocs. This is called via bfd_map_over_sections. */
	113
	114	static void
0c7a8e5a	115	check_sections (bfd abfd, asection sec, void *datasec)
20bccb34 NC	116	{
20bccb34 NC	117	if ((bfd_get_section_flags (abfd, sec) & SEC_DATA)
0c7a8e5a	118	&& sec != datasec
20bccb34 NC	119	&& sec->reloc_count != 0)
	120	einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n",
	121	abfd, bfd_get_section_name (abfd, sec));
	122	}
	123
	124	/* This function is called after the section sizes and offsets have
	125	been set. If we are generating embedded relocs, it calls a special
	126	BFD backend routine to do the work. */
	127
	128	static void
0c7a8e5a	129	gld${EMULATION_NAME}_after_allocation (void)
20bccb34 NC	130	{
	131	bfd *abfd;
	132
	133	if (! command_line.embedded_relocs
1049f94e	134	\|\| link_info.relocatable)
20bccb34 NC	135	return;
	136
	137	for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
	138	{
	139	asection datasec, relsec;
	140	char *errmsg;
	141
	142	datasec = bfd_get_section_by_name (abfd, ".data");
	143
	144	if (datasec == NULL \|\| datasec->reloc_count == 0)
	145	continue;
	146
	147	relsec = bfd_get_section_by_name (abfd, ".emreloc");
	148	ASSERT (relsec != NULL);
	149
	150	if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info,
	151	datasec, relsec,
	152	&errmsg))
	153	{
	154	if (errmsg == NULL)
	155	einfo ("%B%X: can not create runtime reloc information: %E\n",
	156	abfd);
	157	else
	158	einfo ("%X%B: can not create runtime reloc information: %s\n",
	159	abfd, errmsg);
	160	}
	161	}
	162	}
	163
	164	static char *
0c7a8e5a	165	gld${EMULATION_NAME}_get_script (int *isfile)
20bccb34 NC	166	EOF
	167
	168	if test -n "$COMPILE_IN"
	169	then
	170	# Scripts compiled in.
	171
	172	# sed commands to quote an ld script as a C string.
	173	sc="-f stringify.sed"
	174
92b93329	175	fragment <<EOF
0c7a8e5a	176	{
20bccb34 NC	177	*isfile = 0;
20bccb34 NC	178
1049f94e	179	if (link_info.relocatable && config.build_constructors)
20bccb34 NC	180	return
20bccb34 NC	181	EOF
b34976b6	182	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1049f94e	183	echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
b34976b6 AM	184	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	185	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	186	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	187	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	188	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	189	echo ' ; else return' >> e${EMULATION_NAME}.c
	190	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	191	echo '; }' >> e${EMULATION_NAME}.c
20bccb34 NC	192
	193	else
	194	# Scripts read from the filesystem.
	195
92b93329	196	fragment <<EOF
0c7a8e5a	197	{
20bccb34 NC	198	*isfile = 1;
20bccb34 NC	199
1049f94e	200	if (link_info.relocatable && config.build_constructors)
20bccb34	201	return "ldscripts/${EMULATION_NAME}.xu";
1049f94e	202	else if (link_info.relocatable)
20bccb34 NC	203	return "ldscripts/${EMULATION_NAME}.xr";
	204	else if (!config.text_read_only)
	205	return "ldscripts/${EMULATION_NAME}.xbn";
	206	else if (!config.magic_demand_paged)
	207	return "ldscripts/${EMULATION_NAME}.xn";
	208	else
	209	return "ldscripts/${EMULATION_NAME}.x";
	210	}
	211	EOF
	212
	213	fi
	214
92b93329	215	fragment <<EOF
20bccb34	216
0c7a8e5a	217	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
20bccb34 NC	218	{
	219	gld${EMULATION_NAME}_before_parse,
	220	syslib_default,
	221	hll_default,
	222	after_parse_default,
	223	gld${EMULATION_NAME}_after_open,
	224	gld${EMULATION_NAME}_after_allocation,
	225	set_output_arch_default,
	226	ldemul_default_target,
	227	before_allocation_default,
	228	gld${EMULATION_NAME}_get_script,
	229	"${EMULATION_NAME}",
	230	"${OUTPUT_FORMAT}",
1e035701	231	finish_default,
20bccb34 NC	232	NULL, /* create output section statements */
	233	NULL, /* open dynamic archive */
	234	NULL, /* place orphan */
	235	NULL, /* set symbols */
	236	NULL, /* parse args */
3bcf5557 AM	237	NULL, /* add_options */
3bcf5557 AM	238	NULL, /* handle_option */
20bccb34 NC	239	NULL, /* unrecognized file */
	240	NULL, /* list options */
	241	NULL, /* recognized file */
fac1652d AM	242	NULL, /* find_potential_libraries */
fac1652d AM	243	NULL /* new_vers_pattern */
20bccb34 NC	244	};
20bccb34 NC	245	EOF