[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
   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));

/* 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,
  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 */
};
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 ${EMULATION_NAME}
a2b64bed	7	Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000
b71e2778	8	Free Software Foundation, Inc.
252b5132 RH	9	Written by Steve Chamberlain steve@cygnus.com
	10
	11	This file is part of GLD, the Gnu Linker.
	12
	13	This program is free software; you can redistribute it and/or modify
	14	it under the terms of the GNU General Public License as published by
	15	the Free Software Foundation; either version 2 of the License, or
	16	(at your option) any later version.
	17
	18	This program is distributed in the hope that it will be useful,
	19	but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	GNU General Public License for more details.
	22
	23	You should have received a copy of the GNU General Public License
	24	along with this program; if not, write to the Free Software
	25	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	26
	27	#define TARGET_IS_${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));
252b5132 RH	49
	50	/* If true, then interworking stubs which support calls to old, non-interworking
	51	aware ARM code should be generated. */
	52
	53	static int support_old_code = 0;
6f798e5c	54	static char * thumb_entry_symbol = NULL;
252b5132 RH	55
252b5132 RH	56	#define OPTION_SUPPORT_OLD_CODE 300
6f798e5c	57	#define OPTION_THUMB_ENTRY 301
252b5132 RH	58
	59	static struct option longopts[] =
	60	{
	61	{"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
6f798e5c	62	{"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
252b5132 RH	63	{NULL, no_argument, NULL, 0}
	64	};
	65
	66	static void
	67	gld${EMULATION_NAME}_list_options (file)
	68	FILE * file;
	69	{
	70	fprintf (file, _(" --support-old-code Support interworking with old code\n"));
6f798e5c	71	fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
252b5132 RH	72	}
	73
	74	static int
	75	gld${EMULATION_NAME}_parse_args (argc, argv)
	76	int argc;
	77	char ** argv;
	78	{
	79	int longind;
	80	int optc;
	81	int prevoptind = optind;
	82	int prevopterr = opterr;
	83	int wanterror;
	84	static int lastoptind = -1;
	85
	86	if (lastoptind != optind)
	87	opterr = 0;
	88
	89	wanterror = opterr;
	90	lastoptind = optind;
	91
	92	optc = getopt_long_only (argc, argv, "-", longopts, & longind);
	93	opterr = prevopterr;
	94
	95	switch (optc)
	96	{
	97	default:
	98	if (wanterror)
	99	xexit (1);
	100	optind = prevoptind;
	101	return 0;
	102
	103	case OPTION_SUPPORT_OLD_CODE:
	104	support_old_code = 1;
	105	break;
6f798e5c NC	106
	107	case OPTION_THUMB_ENTRY:
	108	thumb_entry_symbol = optarg;
	109	break;
252b5132 RH	110	}
	111
	112	return 1;
	113	}
	114	\f
	115	static void
	116	gld${EMULATION_NAME}_before_parse ()
	117	{
	118	#ifndef TARGET_ /* I.e., if not generic. */
	119	ldfile_set_output_arch ("`echo ${ARCH}`");
	120	#endif /* not TARGET_ */
	121	}
	122
	123	/* This is called after the sections have been attached to output
	124	sections, but before any sizes or addresses have been set. */
	125
	126	static void
	127	gld${EMULATION_NAME}_before_allocation ()
	128	{
	129	/* we should be able to set the size of the interworking stub section */
	130
	131	/* Here we rummage through the found bfds to collect glue information */
	132	/* FIXME: should this be based on a command line option? krk@cygnus.com */
	133	{
	134	LANG_FOR_EACH_INPUT_STATEMENT (is)
	135	{
	136	if (! bfd_arm_process_before_allocation
	137	(is->the_bfd, & link_info, support_old_code))
	138	{
	139	/* xgettext:c-format */
	140	einfo (_("Errors encountered processing file %s"), is->filename);
	141	}
	142	}
	143	}
	144
	145	/* We have seen it all. Allocate it, and carry on */
	146	bfd_arm_allocate_interworking_sections (& link_info);
	147	}
	148
	149	static void
	150	gld${EMULATION_NAME}_after_open ()
	151	{
f11523b0	152	if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
252b5132	153	{
f11523b0 NC	154	/* The arm backend needs special fields in the output hash structure.
	155	These will only be created if the output format is an arm format,
	156	hence we do not support linking and changing output formats at the
	157	same time. Use a link followed by objcopy to change output formats. */
	158	einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
	159	return;
252b5132	160	}
f11523b0 NC	161
	162	{
	163	LANG_FOR_EACH_INPUT_STATEMENT (is)
	164	{
	165	if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
	166	break;
	167	}
	168	}
252b5132 RH	169	}
252b5132 RH	170
6f798e5c NC	171	static void
	172	gld${EMULATION_NAME}_finish PARAMS((void))
	173	{
	174	struct bfd_link_hash_entry * h;
	175
	176	if (thumb_entry_symbol == NULL)
	177	return;
	178
	179	h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
	180
	181	if (h != (struct bfd_link_hash_entry *) NULL
	182	&& (h->type == bfd_link_hash_defined
	183	\|\| h->type == bfd_link_hash_defweak)
	184	&& h->u.def.section->output_section != NULL)
	185	{
	186	static char buffer[32];
	187	bfd_vma val;
	188
	189	/* Special procesing is required for a Thumb entry symbol. The
	190	bottom bit of its address must be set. */
	191	val = (h->u.def.value
	192	+ bfd_get_section_vma (output_bfd,
	193	h->u.def.section->output_section)
	194	+ h->u.def.section->output_offset);
	195
	196	val \|= 1;
	197
	198	/* Now convert this value into a string and store it in entry_symbol
	199	where the lang_finish() function will pick it up. */
	200	buffer[0] = '0';
	201	buffer[1] = 'x';
	202
	203	sprintf_vma (buffer + 2, val);
	204
	205	if (entry_symbol != NULL && entry_from_cmdline)
	206	einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
	207	thumb_entry_symbol, entry_symbol);
	208	entry_symbol = buffer;
	209	}
	210	else
	211	einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
	212	}
	213
252b5132 RH	214	static char *
	215	gld${EMULATION_NAME}_get_script (isfile)
	216	int *isfile;
	217	EOF
	218
	219	if test -n "$COMPILE_IN"
	220	then
	221	# Scripts compiled in.
	222
	223	# sed commands to quote an ld script as a C string.
597e2591	224	sc="-f stringify.sed"
252b5132 RH	225
	226	cat >>e${EMULATION_NAME}.c <<EOF
	227	{
	228	*isfile = 0;
	229
	230	if (link_info.relocateable == true && config.build_constructors == true)
	231	return
	232	EOF
	233	sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
	234	echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
	235	sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
	236	echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
	237	sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
	238	echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
	239	sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
	240	echo ' ; else return' >> e${EMULATION_NAME}.c
	241	sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
	242	echo '; }' >> e${EMULATION_NAME}.c
	243
	244	else
	245	# Scripts read from the filesystem.
	246
	247	cat >>e${EMULATION_NAME}.c <<EOF
	248	{
	249	*isfile = 1;
	250
	251	if (link_info.relocateable == true && config.build_constructors == true)
	252	return "ldscripts/${EMULATION_NAME}.xu";
	253	else if (link_info.relocateable == true)
	254	return "ldscripts/${EMULATION_NAME}.xr";
	255	else if (!config.text_read_only)
	256	return "ldscripts/${EMULATION_NAME}.xbn";
	257	else if (!config.magic_demand_paged)
	258	return "ldscripts/${EMULATION_NAME}.xn";
	259	else
	260	return "ldscripts/${EMULATION_NAME}.x";
	261	}
	262	EOF
	263
	264	fi
	265
	266	cat >>e${EMULATION_NAME}.c <<EOF
	267
	268	struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
	269	{
	270	gld${EMULATION_NAME}_before_parse,
	271	syslib_default,
	272	hll_default,
	273	after_parse_default,
	274	gld${EMULATION_NAME}_after_open,
	275	after_allocation_default,
	276	set_output_arch_default,
	277	ldemul_default_target,
	278	gld${EMULATION_NAME}_before_allocation,
	279	gld${EMULATION_NAME}_get_script,
	280	"${EMULATION_NAME}",
	281	"${OUTPUT_FORMAT}",
e1c47aa4 AM	282	gld${EMULATION_NAME}_finish,
	283	NULL, /* create output section statements */
	284	NULL, /* open dynamic archive */
	285	NULL, /* place orphan */
	286	NULL, /* set symbols */
252b5132	287	gld${EMULATION_NAME}_parse_args,
e1c47aa4 AM	288	NULL, /* unrecognised file */
e1c47aa4 AM	289	gld${EMULATION_NAME}_list_options,
40d109bf AM	290	NULL, /* recognized file */
40d109bf AM	291	NULL /* find_potential_libraries */
252b5132 RH	292	};
252b5132 RH	293	EOF