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

# This shell script emits a C file. -*- C -*-
# It does some substitutions.
if [ -z "$MACHINE" ]; then
  OUTPUT_ARCH=${ARCH}
else
  OUTPUT_ARCH=${ARCH}:${MACHINE}
fi
cat >e${EMULATION_NAME}.c <<EOF
/* This file is is generated by a shell script.  DO NOT EDIT! */

/* Linux a.out emulation code for ${EMULATION_NAME}
   Copyright 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003
   Free Software Foundation, Inc.
   Written by Steve Chamberlain <sac@cygnus.com>
   Linux support by Eric Youngdale <ericy@cais.cais.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#define TARGET_IS_${EMULATION_NAME}

#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.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${EMULATION_NAME}_before_parse PARAMS ((void));
static bfd_boolean gld${EMULATION_NAME}_open_dynamic_archive
  PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
static void gld${EMULATION_NAME}_find_address_statement
  PARAMS ((lang_statement_union_type *));
static void gld${EMULATION_NAME}_create_output_section_statements
  PARAMS ((void));
static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));

static void
gld${EMULATION_NAME}_before_parse()
{
  const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
  if (arch)
    {
      ldfile_output_architecture = arch->arch;
      ldfile_output_machine = arch->mach;
      ldfile_output_machine_name = arch->printable_name;
    }
  else
    ldfile_output_architecture = bfd_arch_${ARCH};
  config.dynamic_link = TRUE;
  config.has_shared = TRUE;
}

/* Try to open a dynamic archive.  This is where we know that Linux
   dynamic libraries have an extension of .sa.  */

static bfd_boolean
gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
     const char *arch;
     search_dirs_type *search;
     lang_input_statement_type *entry;
{
  char *string;

  if (! entry->is_archive)
    return FALSE;

  string = (char *) xmalloc (strlen (search->name)
			     + strlen (entry->filename)
			     + strlen (arch)
			     + sizeof "/lib.sa");

  sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch);

  if (! ldfile_try_open_bfd (string, entry))
    {
      free (string);
      return FALSE;
    }

  entry->filename = string;

  return TRUE;
}

/* This is called by the create_output_section_statements routine via
   lang_for_each_statement.  It locates any address assignment to
   .text, and modifies it to include the size of the headers.  This
   causes -Ttext to mean the starting address of the header, rather
   than the starting address of .text, which is compatible with other
   Linux tools.  */

static void
gld${EMULATION_NAME}_find_address_statement (s)
     lang_statement_union_type *s;
{
  if (s->header.type == lang_address_statement_enum
      && strcmp (s->address_statement.section_name, ".text") == 0)
    {
      ASSERT (s->address_statement.address->type.node_class == etree_value);
      s->address_statement.address->value.value += 0x20;
    }
}

/* This is called before opening the input BFD's.  */

static void
gld${EMULATION_NAME}_create_output_section_statements ()
{
  lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement);
}

/* 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 ()
{
  if (link_info.relocatable)
    return;

  /* Let the backend work out the sizes of any sections required by
     dynamic linking.  */
  if (! bfd_${EMULATION_NAME}_size_dynamic_sections (output_bfd, &link_info))
    einfo ("%P%F: failed to set dynamic section sizes: %E\n");
}

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.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,
  after_open_default,
  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 */
  gld${EMULATION_NAME}_create_output_section_statements,
  gld${EMULATION_NAME}_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
252b5132 RH	1	# This shell script emits a C file. -- C --
252b5132 RH	2	# It does some substitutions.
b34976b6	3	if [ -z "$MACHINE" ]; then
86af25fe L	4	OUTPUT_ARCH=${ARCH}
	5	else
	6	OUTPUT_ARCH=${ARCH}:${MACHINE}
	7	fi
252b5132 RH	8	cat >e${EMULATION_NAME}.c <<EOF
	9	/* This file is is generated by a shell script. DO NOT EDIT! */
	10
	11	/* Linux a.out emulation code for ${EMULATION_NAME}
3bcf5557	12	Copyright 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003
b71e2778	13	Free Software Foundation, Inc.
252b5132 RH	14	Written by Steve Chamberlain <sac@cygnus.com>
	15	Linux support by Eric Youngdale <ericy@cais.cais.com>
	16
	17	This file is part of GLD, the Gnu Linker.
	18
	19	This program is free software; you can redistribute it and/or modify
	20	it under the terms of the GNU General Public License as published by
	21	the Free Software Foundation; either version 2 of the License, or
	22	(at your option) any later version.
	23
	24	This program is distributed in the hope that it will be useful,
	25	but WITHOUT ANY WARRANTY; without even the implied warranty of
	26	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	27	GNU General Public License for more details.
	28
	29	You should have received a copy of the GNU General Public License
	30	along with this program; if not, write to the Free Software
	31	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	32
	33	#define TARGET_IS_${EMULATION_NAME}
	34
	35	#include "bfd.h"
	36	#include "sysdep.h"
	37	#include "bfdlink.h"
	38
	39	#include "ld.h"
	40	#include "ldmain.h"
252b5132 RH	41	#include "ldmisc.h"
	42	#include "ldexp.h"
	43	#include "ldlang.h"
b71e2778 AM	44	#include "ldfile.h"
b71e2778 AM	45	#include "ldemul.h"
252b5132 RH	46
252b5132 RH	47	static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
b34976b6	48	static bfd_boolean gld${EMULATION_NAME}_open_dynamic_archive
252b5132 RH	49	PARAMS ((const char , search_dirs_type , lang_input_statement_type *));
	50	static void gld${EMULATION_NAME}_find_address_statement
	51	PARAMS ((lang_statement_union_type *));
	52	static void gld${EMULATION_NAME}_create_output_section_statements
	53	PARAMS ((void));
	54	static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
	55	static char gld${EMULATION_NAME}_get_script PARAMS ((int isfile));
	56
	57	static void
	58	gld${EMULATION_NAME}_before_parse()
	59	{
86af25fe L	60	const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
	61	if (arch)
	62	{
	63	ldfile_output_architecture = arch->arch;
	64	ldfile_output_machine = arch->mach;
	65	ldfile_output_machine_name = arch->printable_name;
	66	}
	67	else
	68	ldfile_output_architecture = bfd_arch_${ARCH};
b34976b6 AM	69	config.dynamic_link = TRUE;
b34976b6 AM	70	config.has_shared = TRUE;
252b5132 RH	71	}
	72
	73	/* Try to open a dynamic archive. This is where we know that Linux
	74	dynamic libraries have an extension of .sa. */
	75
b34976b6	76	static bfd_boolean
252b5132 RH	77	gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
	78	const char *arch;
	79	search_dirs_type *search;
	80	lang_input_statement_type *entry;
	81	{
	82	char *string;
	83
	84	if (! entry->is_archive)
b34976b6	85	return FALSE;
252b5132 RH	86
	87	string = (char *) xmalloc (strlen (search->name)
	88	+ strlen (entry->filename)
	89	+ strlen (arch)
	90	+ sizeof "/lib.sa");
	91
	92	sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch);
	93
	94	if (! ldfile_try_open_bfd (string, entry))
	95	{
	96	free (string);
b34976b6	97	return FALSE;
252b5132 RH	98	}
	99
	100	entry->filename = string;
	101
b34976b6	102	return TRUE;
252b5132 RH	103	}
	104
	105	/* This is called by the create_output_section_statements routine via
	106	lang_for_each_statement. It locates any address assignment to
	107	.text, and modifies it to include the size of the headers. This
	108	causes -Ttext to mean the starting address of the header, rather
	109	than the starting address of .text, which is compatible with other
	110	Linux tools. */
	111
	112	static void
	113	gld${EMULATION_NAME}_find_address_statement (s)
	114	lang_statement_union_type *s;
	115	{
	116	if (s->header.type == lang_address_statement_enum
	117	&& strcmp (s->address_statement.section_name, ".text") == 0)
	118	{
	119	ASSERT (s->address_statement.address->type.node_class == etree_value);
	120	s->address_statement.address->value.value += 0x20;
	121	}
	122	}
	123
	124	/* This is called before opening the input BFD's. */
	125
	126	static void
	127	gld${EMULATION_NAME}_create_output_section_statements ()
	128	{
	129	lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement);
	130	}
	131
	132	/* This is called after the sections have been attached to output
	133	sections, but before any sizes or addresses have been set. */
	134
	135	static void
	136	gld${EMULATION_NAME}_before_allocation ()
	137	{
1049f94e	138	if (link_info.relocatable)
252b5132 RH	139	return;
	140
	141	/* Let the backend work out the sizes of any sections required by
	142	dynamic linking. */
	143	if (! bfd_${EMULATION_NAME}_size_dynamic_sections (output_bfd, &link_info))
	144	einfo ("%P%F: failed to set dynamic section sizes: %E\n");
	145	}
	146
	147	static char *
	148	gld${EMULATION_NAME}_get_script(isfile)
	149	int *isfile;
	150	EOF
	151
	152	if test -n "$COMPILE_IN"
	153	then
	154	# Scripts compiled in.
	155
	156	# sed commands to quote an ld script as a C string.
597e2591	157	sc="-f stringify.sed"
252b5132 RH	158
252b5132 RH	159	cat >>e${EMULATION_NAME}.c <<EOF
b34976b6	160	{
252b5132 RH	161	*isfile = 0;
252b5132 RH	162
1049f94e	163	if (link_info.relocatable && config.build_constructors)
597e2591	164	return
252b5132	165	EOF
b34976b6	166	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1049f94e	167	echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
b34976b6 AM	168	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	169	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	170	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	171	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	172	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	173	echo ' ; else return' >> e${EMULATION_NAME}.c
	174	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	175	echo '; }' >> e${EMULATION_NAME}.c
252b5132 RH	176
	177	else
	178	# Scripts read from the filesystem.
	179
	180	cat >>e${EMULATION_NAME}.c <<EOF
b34976b6	181	{
252b5132 RH	182	*isfile = 1;
252b5132 RH	183
1049f94e	184	if (link_info.relocatable && config.build_constructors)
252b5132	185	return "ldscripts/${EMULATION_NAME}.xu";
1049f94e	186	else if (link_info.relocatable)
252b5132 RH	187	return "ldscripts/${EMULATION_NAME}.xr";
	188	else if (!config.text_read_only)
	189	return "ldscripts/${EMULATION_NAME}.xbn";
	190	else if (!config.magic_demand_paged)
	191	return "ldscripts/${EMULATION_NAME}.xn";
	192	else
	193	return "ldscripts/${EMULATION_NAME}.x";
	194	}
	195	EOF
	196
	197	fi
	198
	199	cat >>e${EMULATION_NAME}.c <<EOF
	200
b34976b6	201	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
252b5132 RH	202	{
	203	gld${EMULATION_NAME}_before_parse,
	204	syslib_default,
	205	hll_default,
	206	after_parse_default,
	207	after_open_default,
	208	after_allocation_default,
	209	set_output_arch_default,
	210	ldemul_default_target,
	211	gld${EMULATION_NAME}_before_allocation,
	212	gld${EMULATION_NAME}_get_script,
	213	"${EMULATION_NAME}",
	214	"${OUTPUT_FORMAT}",
e1c47aa4	215	NULL, /* finish */
252b5132	216	gld${EMULATION_NAME}_create_output_section_statements,
49bdcdba	217	gld${EMULATION_NAME}_open_dynamic_archive,
e1c47aa4 AM	218	NULL, /* place orphan */
	219	NULL, /* set symbols */
	220	NULL, /* parse args */
3bcf5557 AM	221	NULL, /* add_options */
3bcf5557 AM	222	NULL, /* handle_option */
e1c47aa4 AM	223	NULL, /* unrecognized file */
e1c47aa4 AM	224	NULL, /* list options */
40d109bf	225	NULL, /* recognized file */
fac1652d AM	226	NULL, /* find_potential_libraries */
fac1652d AM	227	NULL /* new_vers_pattern */
252b5132 RH	228	};
252b5132 RH	229	EOF