[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 (C) 1991, 93, 96, 97, 98, 1999 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 "ldemul.h"
#include "ldfile.h"
#include "ldmisc.h"

#include "ldexp.h"
#include "ldlang.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));

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