[binutils.git] / ld / emultempl / m68kcoff.em

# 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! */

/* Handle embedded relocs for m68k.
   Copyright 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
   Written by Michael Sokolov <[email protected]>, based on generic.em
   by Steve Chamberlain <[email protected]>, embedded relocs code based on
   mipsecoff.em by Ian Lance Taylor <[email protected]>.

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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#define TARGET_IS_${EMULATION_NAME}

#include "bfd.h"
#include "sysdep.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;

  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 (abfd, ".emreloc");
	  if (relsec == NULL
	      || ! bfd_set_section_flags (abfd, relsec,
					  (SEC_ALLOC
					   | SEC_LOAD
					   | SEC_HAS_CONTENTS
					   | SEC_IN_MEMORY))
	      || ! 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"

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

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

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${EMULATION_NAME}_after_open,
  gld${EMULATION_NAME}_after_allocation,
  set_output_arch_default,
  ldemul_default_target,
  before_allocation_default,
  do_assignments_default,
  gld${EMULATION_NAME}_get_script,
  "${EMULATION_NAME}",
  "${OUTPUT_FORMAT}",
  NULL,	/* finish */
  NULL,	/* create output section statements */
  NULL,	/* open dynamic archive */
  NULL,	/* place orphan */
  NULL,	/* set symbols */
  NULL,	/* parse args */
  NULL,	/* add_options */
  NULL,	/* handle_option */
  NULL,	/* unrecognized file */
  NULL,	/* list options */
  NULL,	/* recognized file */
  NULL,	/* find_potential_libraries */
  NULL	/* new_vers_pattern */
};
EOF
Commit	Line	Data
20bccb34 NC	1	# This shell script emits a C file. -- C --
	2	# It does some substitutions.
	3	cat >e${EMULATION_NAME}.c <<EOF
	4	/* This file is is generated by a shell script. DO NOT EDIT! */
	5
	6	/* Handle embedded relocs for m68k.
8423293d	7	Copyright 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
20bccb34 NC	8	Written by Michael Sokolov <[email protected]>, based on generic.em
	9	by Steve Chamberlain <[email protected]>, embedded relocs code based on
	10	mipsecoff.em by Ian Lance Taylor <[email protected]>.
	11
	12	This file is part of GLD, the Gnu Linker.
	13
	14	This program is free software; you can redistribute it and/or modify
	15	it under the terms of the GNU General Public License as published by
	16	the Free Software Foundation; either version 2 of the License, or
	17	(at your option) any later version.
	18
	19	This program is distributed in the hope that it will be useful,
	20	but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	GNU General Public License for more details.
	23
	24	You should have received a copy of the GNU General Public License
	25	along with this program; if not, write to the Free Software
75be928b	26	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20bccb34 NC	27
	28	#define TARGET_IS_${EMULATION_NAME}
	29
	30	#include "bfd.h"
	31	#include "sysdep.h"
	32	#include "bfdlink.h"
	33
	34	#include "ld.h"
	35	#include "ldmain.h"
187ffe95 NC	36	#include "ldexp.h"
187ffe95 NC	37	#include "ldlang.h"
20bccb34	38	#include "ldfile.h"
41392f03	39	#include "ldemul.h"
20bccb34 NC	40	#include "ldmisc.h"
20bccb34 NC	41
0c7a8e5a	42	static void check_sections (bfd , asection , void *);
20bccb34 NC	43
20bccb34 NC	44	static void
0c7a8e5a	45	gld${EMULATION_NAME}_before_parse (void)
20bccb34 NC	46	{
20bccb34 NC	47	#ifndef TARGET_ /* I.e., if not generic. */
5e2f1575	48	ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
20bccb34 NC	49	#endif /* not TARGET_ */
	50	}
	51
	52	/* This function is run after all the input files have been opened.
	53	We create a .emreloc section for each input file with a non zero
	54	.data section. The BFD backend will fill in these sections with
	55	magic numbers which can be used to relocate the data section at run
	56	time. */
	57
	58	static void
0c7a8e5a	59	gld${EMULATION_NAME}_after_open (void)
20bccb34 NC	60	{
	61	bfd *abfd;
	62
	63	if (! command_line.embedded_relocs
1049f94e	64	\|\| link_info.relocatable)
20bccb34 NC	65	return;
	66
	67	for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
	68	{
	69	asection *datasec;
	70
	71	/* As first-order business, make sure that each input BFD is COFF. It
	72	better be, as we are directly calling a COFF backend function. */
	73	if (bfd_get_flavour (abfd) != bfd_target_coff_flavour)
	74	einfo ("%F%B: all input objects must be COFF for --embedded-relocs\n");
	75
	76	datasec = bfd_get_section_by_name (abfd, ".data");
	77
	78	/* Note that we assume that the reloc_count field has already
	79	been set up. We could call bfd_get_reloc_upper_bound, but
	80	that returns the size of a memory buffer rather than a reloc
	81	count. We do not want to call bfd_canonicalize_reloc,
	82	because although it would always work it would force us to
	83	read in the relocs into BFD canonical form, which would waste
	84	a significant amount of time and memory. */
	85	if (datasec != NULL && datasec->reloc_count > 0)
	86	{
	87	asection *relsec;
	88
	89	relsec = bfd_make_section (abfd, ".emreloc");
	90	if (relsec == NULL
	91	\|\| ! bfd_set_section_flags (abfd, relsec,
	92	(SEC_ALLOC
	93	\| SEC_LOAD
	94	\| SEC_HAS_CONTENTS
	95	\| SEC_IN_MEMORY))
	96	\|\| ! bfd_set_section_alignment (abfd, relsec, 2)
	97	\|\| ! bfd_set_section_size (abfd, relsec,
	98	datasec->reloc_count * 12))
	99	einfo ("%F%B: can not create .emreloc section: %E\n");
	100	}
	101
	102	/* Double check that all other data sections are empty, as is
	103	required for embedded PIC code. */
1579bae1	104	bfd_map_over_sections (abfd, check_sections, datasec);
20bccb34 NC	105	}
	106	}
	107
	108	/* Check that of the data sections, only the .data section has
	109	relocs. This is called via bfd_map_over_sections. */
	110
	111	static void
0c7a8e5a	112	check_sections (bfd abfd, asection sec, void *datasec)
20bccb34 NC	113	{
20bccb34 NC	114	if ((bfd_get_section_flags (abfd, sec) & SEC_DATA)
0c7a8e5a	115	&& sec != datasec
20bccb34 NC	116	&& sec->reloc_count != 0)
	117	einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n",
	118	abfd, bfd_get_section_name (abfd, sec));
	119	}
	120
	121	/* This function is called after the section sizes and offsets have
	122	been set. If we are generating embedded relocs, it calls a special
	123	BFD backend routine to do the work. */
	124
	125	static void
0c7a8e5a	126	gld${EMULATION_NAME}_after_allocation (void)
20bccb34 NC	127	{
	128	bfd *abfd;
	129
	130	if (! command_line.embedded_relocs
1049f94e	131	\|\| link_info.relocatable)
20bccb34 NC	132	return;
	133
	134	for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
	135	{
	136	asection datasec, relsec;
	137	char *errmsg;
	138
	139	datasec = bfd_get_section_by_name (abfd, ".data");
	140
	141	if (datasec == NULL \|\| datasec->reloc_count == 0)
	142	continue;
	143
	144	relsec = bfd_get_section_by_name (abfd, ".emreloc");
	145	ASSERT (relsec != NULL);
	146
	147	if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info,
	148	datasec, relsec,
	149	&errmsg))
	150	{
	151	if (errmsg == NULL)
	152	einfo ("%B%X: can not create runtime reloc information: %E\n",
	153	abfd);
	154	else
	155	einfo ("%X%B: can not create runtime reloc information: %s\n",
	156	abfd, errmsg);
	157	}
	158	}
	159	}
	160
	161	static char *
0c7a8e5a	162	gld${EMULATION_NAME}_get_script (int *isfile)
20bccb34 NC	163	EOF
	164
	165	if test -n "$COMPILE_IN"
	166	then
	167	# Scripts compiled in.
	168
	169	# sed commands to quote an ld script as a C string.
	170	sc="-f stringify.sed"
	171
	172	cat >>e${EMULATION_NAME}.c <<EOF
0c7a8e5a	173	{
20bccb34 NC	174	*isfile = 0;
20bccb34 NC	175
1049f94e	176	if (link_info.relocatable && config.build_constructors)
20bccb34 NC	177	return
20bccb34 NC	178	EOF
b34976b6	179	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1049f94e	180	echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
b34976b6 AM	181	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	182	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	183	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	184	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	185	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	186	echo ' ; else return' >> e${EMULATION_NAME}.c
	187	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	188	echo '; }' >> e${EMULATION_NAME}.c
20bccb34 NC	189
	190	else
	191	# Scripts read from the filesystem.
	192
	193	cat >>e${EMULATION_NAME}.c <<EOF
0c7a8e5a	194	{
20bccb34 NC	195	*isfile = 1;
20bccb34 NC	196
1049f94e	197	if (link_info.relocatable && config.build_constructors)
20bccb34	198	return "ldscripts/${EMULATION_NAME}.xu";
1049f94e	199	else if (link_info.relocatable)
20bccb34 NC	200	return "ldscripts/${EMULATION_NAME}.xr";
	201	else if (!config.text_read_only)
	202	return "ldscripts/${EMULATION_NAME}.xbn";
	203	else if (!config.magic_demand_paged)
	204	return "ldscripts/${EMULATION_NAME}.xn";
	205	else
	206	return "ldscripts/${EMULATION_NAME}.x";
	207	}
	208	EOF
	209
	210	fi
	211
	212	cat >>e${EMULATION_NAME}.c <<EOF
	213
0c7a8e5a	214	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
20bccb34 NC	215	{
	216	gld${EMULATION_NAME}_before_parse,
	217	syslib_default,
	218	hll_default,
	219	after_parse_default,
	220	gld${EMULATION_NAME}_after_open,
	221	gld${EMULATION_NAME}_after_allocation,
	222	set_output_arch_default,
	223	ldemul_default_target,
	224	before_allocation_default,
5e797c2c	225	do_assignments_default,
20bccb34 NC	226	gld${EMULATION_NAME}_get_script,
	227	"${EMULATION_NAME}",
	228	"${OUTPUT_FORMAT}",
	229	NULL, /* finish */
	230	NULL, /* create output section statements */
	231	NULL, /* open dynamic archive */
	232	NULL, /* place orphan */
	233	NULL, /* set symbols */
	234	NULL, /* parse args */
3bcf5557 AM	235	NULL, /* add_options */
3bcf5557 AM	236	NULL, /* handle_option */
20bccb34 NC	237	NULL, /* unrecognized file */
	238	NULL, /* list options */
	239	NULL, /* recognized file */
fac1652d AM	240	NULL, /* find_potential_libraries */
fac1652d AM	241	NULL /* new_vers_pattern */
20bccb34 NC	242	};
20bccb34 NC	243	EOF