[deliverable/binutils-gdb.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, 2007
   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 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 "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;

  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,
  gld${EMULATION_NAME}_get_script,
  "${EMULATION_NAME}",
  "${OUTPUT_FORMAT}",
  finish_default,
  NULL,	/* create output section statements */
  NULL,	/* open dynamic archive */
  NULL,	/* place orphan */
  NULL,	/* set symbols */
  NULL,	/* parse args */
  NULL,	/* add_options */
  NULL,	/* handle_option */
  NULL,	/* unrecognized file */
  NULL,	/* list options */
  NULL,	/* recognized file */
  NULL,	/* find_potential_libraries */
  NULL	/* new_vers_pattern */
};
EOF
Commit	Line	Data
20bccb34 NC	1	# This shell script emits a C file. -- C --
	2	# It does some substitutions.
	3	cat >e${EMULATION_NAME}.c <<EOF
	4	/* This file is is generated by a shell script. DO NOT EDIT! */
	5
	6	/* Handle embedded relocs for m68k.
3db64b00 AM	7	Copyright 2000, 2002, 2003, 2004, 2005, 2007
3db64b00 AM	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
	13	This file is part of GLD, the Gnu Linker.
	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 2 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
75be928b	27	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20bccb34 NC	28
	29	#define TARGET_IS_${EMULATION_NAME}
	30
20bccb34	31	#include "sysdep.h"
3db64b00	32	#include "bfd.h"
20bccb34 NC	33	#include "bfdlink.h"
	34
	35	#include "ld.h"
	36	#include "ldmain.h"
187ffe95 NC	37	#include "ldexp.h"
187ffe95 NC	38	#include "ldlang.h"
20bccb34	39	#include "ldfile.h"
41392f03	40	#include "ldemul.h"
20bccb34 NC	41	#include "ldmisc.h"
20bccb34 NC	42
0c7a8e5a	43	static void check_sections (bfd , asection , void *);
20bccb34 NC	44
20bccb34 NC	45	static void
0c7a8e5a	46	gld${EMULATION_NAME}_before_parse (void)
20bccb34 NC	47	{
20bccb34 NC	48	#ifndef TARGET_ /* I.e., if not generic. */
5e2f1575	49	ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
20bccb34 NC	50	#endif /* not TARGET_ */
	51	}
	52
	53	/* This function is run after all the input files have been opened.
	54	We create a .emreloc section for each input file with a non zero
	55	.data section. The BFD backend will fill in these sections with
	56	magic numbers which can be used to relocate the data section at run
	57	time. */
	58
	59	static void
0c7a8e5a	60	gld${EMULATION_NAME}_after_open (void)
20bccb34 NC	61	{
	62	bfd *abfd;
	63
	64	if (! command_line.embedded_relocs
1049f94e	65	\|\| link_info.relocatable)
20bccb34 NC	66	return;
	67
	68	for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
	69	{
	70	asection *datasec;
	71
	72	/* As first-order business, make sure that each input BFD is COFF. It
	73	better be, as we are directly calling a COFF backend function. */
	74	if (bfd_get_flavour (abfd) != bfd_target_coff_flavour)
	75	einfo ("%F%B: all input objects must be COFF for --embedded-relocs\n");
	76
	77	datasec = bfd_get_section_by_name (abfd, ".data");
	78
	79	/* Note that we assume that the reloc_count field has already
	80	been set up. We could call bfd_get_reloc_upper_bound, but
	81	that returns the size of a memory buffer rather than a reloc
	82	count. We do not want to call bfd_canonicalize_reloc,
	83	because although it would always work it would force us to
	84	read in the relocs into BFD canonical form, which would waste
	85	a significant amount of time and memory. */
	86	if (datasec != NULL && datasec->reloc_count > 0)
	87	{
	88	asection *relsec;
	89
	90	relsec = bfd_make_section (abfd, ".emreloc");
	91	if (relsec == NULL
	92	\|\| ! bfd_set_section_flags (abfd, relsec,
	93	(SEC_ALLOC
	94	\| SEC_LOAD
	95	\| SEC_HAS_CONTENTS
	96	\| SEC_IN_MEMORY))
	97	\|\| ! bfd_set_section_alignment (abfd, relsec, 2)
	98	\|\| ! bfd_set_section_size (abfd, relsec,
	99	datasec->reloc_count * 12))
	100	einfo ("%F%B: can not create .emreloc section: %E\n");
	101	}
	102
	103	/* Double check that all other data sections are empty, as is
	104	required for embedded PIC code. */
1579bae1	105	bfd_map_over_sections (abfd, check_sections, datasec);
20bccb34 NC	106	}
	107	}
	108
	109	/* Check that of the data sections, only the .data section has
	110	relocs. This is called via bfd_map_over_sections. */
	111
	112	static void
0c7a8e5a	113	check_sections (bfd abfd, asection sec, void *datasec)
20bccb34 NC	114	{
20bccb34 NC	115	if ((bfd_get_section_flags (abfd, sec) & SEC_DATA)
0c7a8e5a	116	&& sec != datasec
20bccb34 NC	117	&& sec->reloc_count != 0)
	118	einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n",
	119	abfd, bfd_get_section_name (abfd, sec));
	120	}
	121
	122	/* This function is called after the section sizes and offsets have
	123	been set. If we are generating embedded relocs, it calls a special
	124	BFD backend routine to do the work. */
	125
	126	static void
0c7a8e5a	127	gld${EMULATION_NAME}_after_allocation (void)
20bccb34 NC	128	{
	129	bfd *abfd;
	130
	131	if (! command_line.embedded_relocs
1049f94e	132	\|\| link_info.relocatable)
20bccb34 NC	133	return;
	134
	135	for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
	136	{
	137	asection datasec, relsec;
	138	char *errmsg;
	139
	140	datasec = bfd_get_section_by_name (abfd, ".data");
	141
	142	if (datasec == NULL \|\| datasec->reloc_count == 0)
	143	continue;
	144
	145	relsec = bfd_get_section_by_name (abfd, ".emreloc");
	146	ASSERT (relsec != NULL);
	147
	148	if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info,
	149	datasec, relsec,
	150	&errmsg))
	151	{
	152	if (errmsg == NULL)
	153	einfo ("%B%X: can not create runtime reloc information: %E\n",
	154	abfd);
	155	else
	156	einfo ("%X%B: can not create runtime reloc information: %s\n",
	157	abfd, errmsg);
	158	}
	159	}
	160	}
	161
	162	static char *
0c7a8e5a	163	gld${EMULATION_NAME}_get_script (int *isfile)
20bccb34 NC	164	EOF
	165
	166	if test -n "$COMPILE_IN"
	167	then
	168	# Scripts compiled in.
	169
	170	# sed commands to quote an ld script as a C string.
	171	sc="-f stringify.sed"
	172
	173	cat >>e${EMULATION_NAME}.c <<EOF
0c7a8e5a	174	{
20bccb34 NC	175	*isfile = 0;
20bccb34 NC	176
1049f94e	177	if (link_info.relocatable && config.build_constructors)
20bccb34 NC	178	return
20bccb34 NC	179	EOF
b34976b6	180	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1049f94e	181	echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
b34976b6 AM	182	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	183	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	184	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	185	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	186	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	187	echo ' ; else return' >> e${EMULATION_NAME}.c
	188	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	189	echo '; }' >> e${EMULATION_NAME}.c
20bccb34 NC	190
	191	else
	192	# Scripts read from the filesystem.
	193
	194	cat >>e${EMULATION_NAME}.c <<EOF
0c7a8e5a	195	{
20bccb34 NC	196	*isfile = 1;
20bccb34 NC	197
1049f94e	198	if (link_info.relocatable && config.build_constructors)
20bccb34	199	return "ldscripts/${EMULATION_NAME}.xu";
1049f94e	200	else if (link_info.relocatable)
20bccb34 NC	201	return "ldscripts/${EMULATION_NAME}.xr";
	202	else if (!config.text_read_only)
	203	return "ldscripts/${EMULATION_NAME}.xbn";
	204	else if (!config.magic_demand_paged)
	205	return "ldscripts/${EMULATION_NAME}.xn";
	206	else
	207	return "ldscripts/${EMULATION_NAME}.x";
	208	}
	209	EOF
	210
	211	fi
	212
	213	cat >>e${EMULATION_NAME}.c <<EOF
	214
0c7a8e5a	215	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
20bccb34 NC	216	{
	217	gld${EMULATION_NAME}_before_parse,
	218	syslib_default,
	219	hll_default,
	220	after_parse_default,
	221	gld${EMULATION_NAME}_after_open,
	222	gld${EMULATION_NAME}_after_allocation,
	223	set_output_arch_default,
	224	ldemul_default_target,
	225	before_allocation_default,
	226	gld${EMULATION_NAME}_get_script,
	227	"${EMULATION_NAME}",
	228	"${OUTPUT_FORMAT}",
1e035701	229	finish_default,
20bccb34 NC	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