[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 && config.build_constructors)
    return
EOF
sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c
echo '  ; else if (link_info.relocateable) return'     >> e${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 && config.build_constructors)
    return "ldscripts/${EMULATION_NAME}.xu";
  else if (link_info.relocateable)
    return "ldscripts/${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${EMULATION_NAME}_after_open PARAMS ((void));
252b5132	50
b34976b6	51	/* If TRUE, then interworking stubs which support calls to old, non-interworking
252b5132 RH	52	aware ARM code should be generated. */
	53
	54	static int support_old_code = 0;
6f798e5c	55	static char * thumb_entry_symbol = NULL;
252b5132 RH	56
252b5132 RH	57	#define OPTION_SUPPORT_OLD_CODE 300
6f798e5c	58	#define OPTION_THUMB_ENTRY 301
252b5132 RH	59
	60	static struct option longopts[] =
	61	{
	62	{"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
6f798e5c	63	{"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
252b5132 RH	64	{NULL, no_argument, NULL, 0}
	65	};
	66
	67	static void
	68	gld${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
b34976b6 AM	180	h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
b34976b6 AM	181	FALSE, FALSE, TRUE);
6f798e5c NC	182
	183	if (h != (struct bfd_link_hash_entry *) NULL
	184	&& (h->type == bfd_link_hash_defined
	185	\|\| h->type == bfd_link_hash_defweak)
	186	&& h->u.def.section->output_section != NULL)
	187	{
	188	static char buffer[32];
	189	bfd_vma val;
	190
	191	/* Special procesing is required for a Thumb entry symbol. The
	192	bottom bit of its address must be set. */
	193	val = (h->u.def.value
	194	+ bfd_get_section_vma (output_bfd,
	195	h->u.def.section->output_section)
	196	+ h->u.def.section->output_offset);
	197
	198	val \|= 1;
	199
	200	/* Now convert this value into a string and store it in entry_symbol
	201	where the lang_finish() function will pick it up. */
	202	buffer[0] = '0';
	203	buffer[1] = 'x';
	204
	205	sprintf_vma (buffer + 2, val);
	206
e3e942e9	207	if (entry_symbol.name != NULL && entry_from_cmdline)
6f798e5c	208	einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
e3e942e9 AM	209	thumb_entry_symbol, entry_symbol.name);
e3e942e9 AM	210	entry_symbol.name = buffer;
6f798e5c NC	211	}
	212	else
	213	einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
	214	}
	215
252b5132 RH	216	static char *
	217	gld${EMULATION_NAME}_get_script (isfile)
	218	int *isfile;
	219	EOF
	220
	221	if test -n "$COMPILE_IN"
	222	then
	223	# Scripts compiled in.
	224
	225	# sed commands to quote an ld script as a C string.
597e2591	226	sc="-f stringify.sed"
252b5132 RH	227
	228	cat >>e${EMULATION_NAME}.c <<EOF
	229	{
	230	*isfile = 0;
	231
b34976b6	232	if (link_info.relocateable && config.build_constructors)
252b5132 RH	233	return
252b5132 RH	234	EOF
b34976b6 AM	235	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
	236	echo ' ; else if (link_info.relocateable) return' >> e${EMULATION_NAME}.c
	237	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	238	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	239	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	240	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	241	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	242	echo ' ; else return' >> e${EMULATION_NAME}.c
	243	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	244	echo '; }' >> e${EMULATION_NAME}.c
252b5132 RH	245
	246	else
	247	# Scripts read from the filesystem.
	248
	249	cat >>e${EMULATION_NAME}.c <<EOF
	250	{
	251	*isfile = 1;
	252
b34976b6	253	if (link_info.relocateable && config.build_constructors)
252b5132	254	return "ldscripts/${EMULATION_NAME}.xu";
b34976b6	255	else if (link_info.relocateable)
252b5132 RH	256	return "ldscripts/${EMULATION_NAME}.xr";
	257	else if (!config.text_read_only)
	258	return "ldscripts/${EMULATION_NAME}.xbn";
	259	else if (!config.magic_demand_paged)
	260	return "ldscripts/${EMULATION_NAME}.xn";
	261	else
	262	return "ldscripts/${EMULATION_NAME}.x";
	263	}
	264	EOF
	265
	266	fi
	267
	268	cat >>e${EMULATION_NAME}.c <<EOF
	269
	270	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
	271	{
	272	gld${EMULATION_NAME}_before_parse,
	273	syslib_default,
	274	hll_default,
	275	after_parse_default,
	276	gld${EMULATION_NAME}_after_open,
	277	after_allocation_default,
	278	set_output_arch_default,
	279	ldemul_default_target,
	280	gld${EMULATION_NAME}_before_allocation,
	281	gld${EMULATION_NAME}_get_script,
	282	"${EMULATION_NAME}",
	283	"${OUTPUT_FORMAT}",
e1c47aa4 AM	284	gld${EMULATION_NAME}_finish,
	285	NULL, /* create output section statements */
	286	NULL, /* open dynamic archive */
	287	NULL, /* place orphan */
	288	NULL, /* set symbols */
252b5132	289	gld${EMULATION_NAME}_parse_args,
e1c47aa4 AM	290	NULL, /* unrecognised file */
e1c47aa4 AM	291	gld${EMULATION_NAME}_list_options,
40d109bf	292	NULL, /* recognized file */
fac1652d AM	293	NULL, /* find_potential_libraries */
fac1652d AM	294	NULL /* new_vers_pattern */
252b5132 RH	295	};
252b5132 RH	296	EOF