[deliverable/binutils-gdb.git] / ld / emultempl / armcoff.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! */

/* emulate the original gld for the given ${EMULATION_NAME}
   Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002
   Free Software Foundation, Inc.
   Written by Steve Chamberlain steve@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., 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 "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${EMULATION_NAME}_get_script PARAMS ((int *isfile));
static int  gld${EMULATION_NAME}_parse_args PARAMS((int, char **));
static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *));
static void gld${EMULATION_NAME}_finish PARAMS ((void));
static void gld${EMULATION_NAME}_after_open PARAMS ((void));

/* If true, then interworking stubs which support calls to old, non-interworking
   aware ARM code should be generated.  */

static int support_old_code = 0;
static char * thumb_entry_symbol = NULL;

#define OPTION_SUPPORT_OLD_CODE		300
#define OPTION_THUMB_ENTRY		301

static struct option longopts[] =
{
  {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
  {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
  {NULL, no_argument, NULL, 0}
};

static void
gld${EMULATION_NAME}_list_options (file)
     FILE * file;
{
  fprintf (file, _("  --support-old-code   Support interworking with old code\n"));
  fprintf (file, _("  --thumb-entry=<sym>  Set the entry point to be Thumb symbol <sym>\n"));
}

static int
gld${EMULATION_NAME}_parse_args (argc, argv)
     int     argc;
     char ** argv;
{
  int        longind;
  int        optc;
  int        prevoptind = optind;
  int        prevopterr = opterr;
  int        wanterror;
  static int lastoptind = -1;

  if (lastoptind != optind)
    opterr = 0;
  
  wanterror  = opterr;
  lastoptind = optind;

  optc   = getopt_long_only (argc, argv, "-", longopts, & longind);
  opterr = prevopterr;

  switch (optc)
    {
    default:
      if (wanterror)
	xexit (1);
      optind =  prevoptind;
      return 0;

    case OPTION_SUPPORT_OLD_CODE:
      support_old_code = 1;
      break;

    case OPTION_THUMB_ENTRY:
      thumb_entry_symbol = optarg;
      break;
    }
  
  return 1;
}
\f
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? krk@cygnus.com */
  {
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (! bfd_arm_process_before_allocation
	    (is->the_bfd, & link_info, support_old_code))
	  {
	    /* xgettext:c-format */
	    einfo (_("Errors encountered processing file %s"), is->filename);
	  }
      }
  }

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

static void
gld${EMULATION_NAME}_after_open ()
{
  if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
    {
      /* The arm backend needs special fields in the output hash structure.
	 These will only be created if the output format is an arm format,
	 hence we do not support linking and changing output formats at the
	 same time.  Use a link followed by objcopy to change output formats.  */
      einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
      return;
    }
  
  {
    LANG_FOR_EACH_INPUT_STATEMENT (is)
      {
	if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
	  break;
      }
  }
}

static void
gld${EMULATION_NAME}_finish PARAMS((void))
{
  struct bfd_link_hash_entry * h;

  if (thumb_entry_symbol == NULL)
    return;
  
  h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);

  if (h != (struct bfd_link_hash_entry *) NULL
      && (h->type == bfd_link_hash_defined
	  || h->type == bfd_link_hash_defweak)
      && h->u.def.section->output_section != NULL)
    {
      static char buffer[32];
      bfd_vma val;
      
      /* Special procesing is required for a Thumb entry symbol.  The
	 bottom bit of its address must be set.  */
      val = (h->u.def.value
	     + bfd_get_section_vma (output_bfd,
				    h->u.def.section->output_section)
	     + h->u.def.section->output_offset);
      
      val |= 1;

      /* Now convert this value into a string and store it in entry_symbol
         where the lang_finish() function will pick it up.  */
      buffer[0] = '0';
      buffer[1] = 'x';
      
      sprintf_vma (buffer + 2, val);

      if (entry_symbol.name != NULL && entry_from_cmdline)
	einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
	       thumb_entry_symbol, entry_symbol.name);
      entry_symbol.name = buffer;
    }
  else
    einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
}

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}",
  "${OUTPUT_FORMAT}",
  gld${EMULATION_NAME}_finish,
  NULL,	/* create output section statements */
  NULL,	/* open dynamic archive */
  NULL,	/* place orphan */
  NULL,	/* set symbols */
  gld${EMULATION_NAME}_parse_args,
  NULL,	/* unrecognised file */
  gld${EMULATION_NAME}_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 --
	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	/* emulate the original gld for the given ${EMULATION_NAME}
e3e942e9	7	Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002
b71e2778	8	Free Software Foundation, Inc.
252b5132 RH	9	Written by Steve Chamberlain steve@cygnus.com
	10
	11	This file is part of GLD, the Gnu Linker.
	12
	13	This program is free software; you can redistribute it and/or modify
	14	it under the terms of the GNU General Public License as published by
	15	the Free Software Foundation; either version 2 of the License, or
	16	(at your option) any later version.
	17
	18	This program is distributed in the hope that it will be useful,
	19	but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	GNU General Public License for more details.
	22
	23	You should have received a copy of the GNU General Public License
	24	along with this program; if not, write to the Free Software
	25	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	26
	27	#define TARGET_IS_${EMULATION_NAME}
	28
	29	#include "bfd.h"
	30	#include "sysdep.h"
	31	#include "bfdlink.h"
	32	#include "getopt.h"
	33
	34	#include "ld.h"
	35	#include "ldmain.h"
252b5132 RH	36	#include "ldmisc.h"
	37
	38	#include "ldexp.h"
	39	#include "ldlang.h"
b71e2778 AM	40	#include "ldfile.h"
b71e2778 AM	41	#include "ldemul.h"
252b5132 RH	42
	43	static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
	44	static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
	45	static char gld${EMULATION_NAME}_get_script PARAMS ((int isfile));
	46	static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **));
229cf42b	47	static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *));
1ac6a752	48	static void gld${EMULATION_NAME}_finish PARAMS ((void));
48f6162b	49	static void gld${EMULATION_NAME}_after_open PARAMS ((void));
252b5132 RH	50
	51	/* If true, then interworking stubs which support calls to old, non-interworking
	52	aware ARM code should be generated. */
	53
	54	static int support_old_code = 0;
6f798e5c	55	static char * thumb_entry_symbol = NULL;
252b5132 RH	56
252b5132 RH	57	#define OPTION_SUPPORT_OLD_CODE 300
6f798e5c	58	#define OPTION_THUMB_ENTRY 301
252b5132 RH	59
	60	static struct option longopts[] =
	61	{
	62	{"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
6f798e5c	63	{"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
252b5132 RH	64	{NULL, no_argument, NULL, 0}
	65	};
	66
	67	static void
	68	gld${EMULATION_NAME}_list_options (file)
	69	FILE * file;
	70	{
	71	fprintf (file, _(" --support-old-code Support interworking with old code\n"));
6f798e5c	72	fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
252b5132 RH	73	}
	74
	75	static int
	76	gld${EMULATION_NAME}_parse_args (argc, argv)
	77	int argc;
	78	char ** argv;
	79	{
	80	int longind;
	81	int optc;
	82	int prevoptind = optind;
	83	int prevopterr = opterr;
	84	int wanterror;
	85	static int lastoptind = -1;
	86
	87	if (lastoptind != optind)
	88	opterr = 0;
	89
	90	wanterror = opterr;
	91	lastoptind = optind;
	92
	93	optc = getopt_long_only (argc, argv, "-", longopts, & longind);
	94	opterr = prevopterr;
	95
	96	switch (optc)
	97	{
	98	default:
	99	if (wanterror)
	100	xexit (1);
	101	optind = prevoptind;
	102	return 0;
	103
	104	case OPTION_SUPPORT_OLD_CODE:
	105	support_old_code = 1;
	106	break;
6f798e5c NC	107
	108	case OPTION_THUMB_ENTRY:
	109	thumb_entry_symbol = optarg;
	110	break;
252b5132 RH	111	}
	112
	113	return 1;
	114	}
	115	\f
	116	static void
	117	gld${EMULATION_NAME}_before_parse ()
	118	{
	119	#ifndef TARGET_ /* I.e., if not generic. */
	120	ldfile_set_output_arch ("`echo ${ARCH}`");
	121	#endif /* not TARGET_ */
	122	}
	123
	124	/* This is called after the sections have been attached to output
	125	sections, but before any sizes or addresses have been set. */
	126
	127	static void
	128	gld${EMULATION_NAME}_before_allocation ()
	129	{
	130	/* we should be able to set the size of the interworking stub section */
	131
	132	/* Here we rummage through the found bfds to collect glue information */
	133	/* FIXME: should this be based on a command line option? krk@cygnus.com */
	134	{
	135	LANG_FOR_EACH_INPUT_STATEMENT (is)
	136	{
	137	if (! bfd_arm_process_before_allocation
	138	(is->the_bfd, & link_info, support_old_code))
	139	{
	140	/* xgettext:c-format */
	141	einfo (_("Errors encountered processing file %s"), is->filename);
	142	}
	143	}
	144	}
	145
	146	/* We have seen it all. Allocate it, and carry on */
	147	bfd_arm_allocate_interworking_sections (& link_info);
	148	}
	149
	150	static void
	151	gld${EMULATION_NAME}_after_open ()
	152	{
f11523b0	153	if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
252b5132	154	{
f11523b0 NC	155	/* The arm backend needs special fields in the output hash structure.
	156	These will only be created if the output format is an arm format,
	157	hence we do not support linking and changing output formats at the
	158	same time. Use a link followed by objcopy to change output formats. */
	159	einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
	160	return;
252b5132	161	}
f11523b0 NC	162
	163	{
	164	LANG_FOR_EACH_INPUT_STATEMENT (is)
	165	{
	166	if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
	167	break;
	168	}
	169	}
252b5132 RH	170	}
252b5132 RH	171
6f798e5c NC	172	static void
	173	gld${EMULATION_NAME}_finish PARAMS((void))
	174	{
	175	struct bfd_link_hash_entry * h;
	176
	177	if (thumb_entry_symbol == NULL)
	178	return;
	179
	180	h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
	181
	182	if (h != (struct bfd_link_hash_entry *) NULL
	183	&& (h->type == bfd_link_hash_defined
	184	\|\| h->type == bfd_link_hash_defweak)
	185	&& h->u.def.section->output_section != NULL)
	186	{
	187	static char buffer[32];
	188	bfd_vma val;
	189
	190	/* Special procesing is required for a Thumb entry symbol. The
	191	bottom bit of its address must be set. */
	192	val = (h->u.def.value
	193	+ bfd_get_section_vma (output_bfd,
	194	h->u.def.section->output_section)
	195	+ h->u.def.section->output_offset);
	196
	197	val \|= 1;
	198
	199	/* Now convert this value into a string and store it in entry_symbol
	200	where the lang_finish() function will pick it up. */
	201	buffer[0] = '0';
	202	buffer[1] = 'x';
	203
	204	sprintf_vma (buffer + 2, val);
	205
e3e942e9	206	if (entry_symbol.name != NULL && entry_from_cmdline)
6f798e5c	207	einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
e3e942e9 AM	208	thumb_entry_symbol, entry_symbol.name);
e3e942e9 AM	209	entry_symbol.name = buffer;
6f798e5c NC	210	}
	211	else
	212	einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
	213	}
	214
252b5132 RH	215	static char *
	216	gld${EMULATION_NAME}_get_script (isfile)
	217	int *isfile;
	218	EOF
	219
	220	if test -n "$COMPILE_IN"
	221	then
	222	# Scripts compiled in.
	223
	224	# sed commands to quote an ld script as a C string.
597e2591	225	sc="-f stringify.sed"
252b5132 RH	226
	227	cat >>e${EMULATION_NAME}.c <<EOF
	228	{
	229	*isfile = 0;
	230
	231	if (link_info.relocateable == true && config.build_constructors == true)
	232	return
	233	EOF
	234	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
	235	echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
	236	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	237	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	238	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	239	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	240	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	241	echo ' ; else return' >> e${EMULATION_NAME}.c
	242	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	243	echo '; }' >> e${EMULATION_NAME}.c
	244
	245	else
	246	# Scripts read from the filesystem.
	247
	248	cat >>e${EMULATION_NAME}.c <<EOF
	249	{
	250	*isfile = 1;
	251
	252	if (link_info.relocateable == true && config.build_constructors == true)
	253	return "ldscripts/${EMULATION_NAME}.xu";
	254	else if (link_info.relocateable == true)
	255	return "ldscripts/${EMULATION_NAME}.xr";
	256	else if (!config.text_read_only)
	257	return "ldscripts/${EMULATION_NAME}.xbn";
	258	else if (!config.magic_demand_paged)
	259	return "ldscripts/${EMULATION_NAME}.xn";
	260	else
	261	return "ldscripts/${EMULATION_NAME}.x";
	262	}
	263	EOF
	264
	265	fi
	266
	267	cat >>e${EMULATION_NAME}.c <<EOF
	268
	269	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
	270	{
	271	gld${EMULATION_NAME}_before_parse,
	272	syslib_default,
	273	hll_default,
	274	after_parse_default,
	275	gld${EMULATION_NAME}_after_open,
	276	after_allocation_default,
	277	set_output_arch_default,
	278	ldemul_default_target,
	279	gld${EMULATION_NAME}_before_allocation,
	280	gld${EMULATION_NAME}_get_script,
	281	"${EMULATION_NAME}",
	282	"${OUTPUT_FORMAT}",
e1c47aa4 AM	283	gld${EMULATION_NAME}_finish,
	284	NULL, /* create output section statements */
	285	NULL, /* open dynamic archive */
	286	NULL, /* place orphan */
	287	NULL, /* set symbols */
252b5132	288	gld${EMULATION_NAME}_parse_args,
e1c47aa4 AM	289	NULL, /* unrecognised file */
e1c47aa4 AM	290	gld${EMULATION_NAME}_list_options,
40d109bf	291	NULL, /* recognized file */
fac1652d AM	292	NULL, /* find_potential_libraries */
fac1652d AM	293	NULL /* new_vers_pattern */
252b5132 RH	294	};
252b5132 RH	295	EOF