[deliverable/binutils-gdb.git] / bfd / binary.c

/* BFD back-end for binary objects.
   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2004, 2005 Free Software Foundation, Inc.
   Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>

   This file is part of BFD, the Binary File Descriptor library.

   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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

/* This is a BFD backend which may be used to write binary objects.
   It may only be used for output, not input.  The intention is that
   this may be used as an output format for objcopy in order to
   generate raw binary data.

   This is very simple.  The only complication is that the real data
   will start at some address X, and in some cases we will not want to
   include X zeroes just to get to that point.  Since the start
   address is not meaningful for this object file format, we use it
   instead to indicate the number of zeroes to skip at the start of
   the file.  objcopy cooperates by specially setting the start
   address to zero by default.  */

#include "bfd.h"
#include "sysdep.h"
#include "safe-ctype.h"
#include "libbfd.h"

/* Any bfd we create by reading a binary file has three symbols:
   a start symbol, an end symbol, and an absolute length symbol.  */
#define BIN_SYMS 3

/* Set by external programs - specifies the BFD architecture and
   machine number to be uses when creating binary BFDs.  */
enum bfd_architecture  bfd_external_binary_architecture = bfd_arch_unknown;
unsigned long          bfd_external_machine = 0;

/* Create a binary object.  Invoked via bfd_set_format.  */

static bfd_boolean
binary_mkobject (bfd *abfd ATTRIBUTE_UNUSED)
{
  return TRUE;
}

/* Any file may be considered to be a binary file, provided the target
   was not defaulted.  That is, it must be explicitly specified as
   being binary.  */

static const bfd_target *
binary_object_p (bfd *abfd)
{
  struct stat statbuf;
  asection *sec;

  if (abfd->target_defaulted)
    {
      bfd_set_error (bfd_error_wrong_format);
      return NULL;
    }

  abfd->symcount = BIN_SYMS;

  /* Find the file size.  */
  if (bfd_stat (abfd, &statbuf) < 0)
    {
      bfd_set_error (bfd_error_system_call);
      return NULL;
    }

  /* One data section.  */
  sec = bfd_make_section (abfd, ".data");
  if (sec == NULL)
    return NULL;
  sec->flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS;
  sec->vma = 0;
  sec->size = statbuf.st_size;
  sec->filepos = 0;

  abfd->tdata.any = (void *) sec;

  if (bfd_get_arch_info (abfd) != NULL)
    {
      if ((bfd_get_arch_info (abfd)->arch == bfd_arch_unknown)
          && (bfd_external_binary_architecture != bfd_arch_unknown))
        bfd_set_arch_info (abfd, bfd_lookup_arch
			   (bfd_external_binary_architecture, bfd_external_machine));
    }

  return abfd->xvec;
}

#define binary_close_and_cleanup     _bfd_generic_close_and_cleanup
#define binary_bfd_free_cached_info  _bfd_generic_bfd_free_cached_info
#define binary_new_section_hook      _bfd_generic_new_section_hook

/* Get contents of the only section.  */

static bfd_boolean
binary_get_section_contents (bfd *abfd,
			     asection *section ATTRIBUTE_UNUSED,
			     void * location,
			     file_ptr offset,
			     bfd_size_type count)
{
  if (bfd_seek (abfd, offset, SEEK_SET) != 0
      || bfd_bread (location, count, abfd) != count)
    return FALSE;
  return TRUE;
}

/* Return the amount of memory needed to read the symbol table.  */

static long
binary_get_symtab_upper_bound (bfd *abfd ATTRIBUTE_UNUSED)
{
  return (BIN_SYMS + 1) * sizeof (asymbol *);
}

/* Create a symbol name based on the bfd's filename.  */

static char *
mangle_name (bfd *abfd, char *suffix)
{
  bfd_size_type size;
  char *buf;
  char *p;

  size = (strlen (bfd_get_filename (abfd))
	  + strlen (suffix)
	  + sizeof "_binary__");

  buf = bfd_alloc (abfd, size);
  if (buf == NULL)
    return "";

  sprintf (buf, "_binary_%s_%s", bfd_get_filename (abfd), suffix);

  /* Change any non-alphanumeric characters to underscores.  */
  for (p = buf; *p; p++)
    if (! ISALNUM (*p))
      *p = '_';

  return buf;
}

/* Return the symbol table.  */

static long
binary_canonicalize_symtab (bfd *abfd, asymbol **alocation)
{
  asection *sec = (asection *) abfd->tdata.any;
  asymbol *syms;
  unsigned int i;
  bfd_size_type amt = BIN_SYMS * sizeof (asymbol);

  syms = bfd_alloc (abfd, amt);
  if (syms == NULL)
    return 0;

  /* Start symbol.  */
  syms[0].the_bfd = abfd;
  syms[0].name = mangle_name (abfd, "start");
  syms[0].value = 0;
  syms[0].flags = BSF_GLOBAL;
  syms[0].section = sec;
  syms[0].udata.p = NULL;

  /* End symbol.  */
  syms[1].the_bfd = abfd;
  syms[1].name = mangle_name (abfd, "end");
  syms[1].value = sec->size;
  syms[1].flags = BSF_GLOBAL;
  syms[1].section = sec;
  syms[1].udata.p = NULL;

  /* Size symbol.  */
  syms[2].the_bfd = abfd;
  syms[2].name = mangle_name (abfd, "size");
  syms[2].value = sec->size;
  syms[2].flags = BSF_GLOBAL;
  syms[2].section = bfd_abs_section_ptr;
  syms[2].udata.p = NULL;

  for (i = 0; i < BIN_SYMS; i++)
    *alocation++ = syms++;
  *alocation = NULL;

  return BIN_SYMS;
}

#define binary_make_empty_symbol  _bfd_generic_make_empty_symbol
#define binary_print_symbol       _bfd_nosymbols_print_symbol

/* Get information about a symbol.  */

static void
binary_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
			asymbol *symbol,
			symbol_info *ret)
{
  bfd_symbol_info (symbol, ret);
}

#define binary_bfd_is_local_label_name      bfd_generic_is_local_label_name
#define binary_get_lineno                  _bfd_nosymbols_get_lineno
#define binary_find_nearest_line           _bfd_nosymbols_find_nearest_line
#define binary_find_inliner_info           _bfd_nosymbols_find_inliner_info
#define binary_bfd_make_debug_symbol       _bfd_nosymbols_bfd_make_debug_symbol
#define binary_read_minisymbols            _bfd_generic_read_minisymbols
#define binary_minisymbol_to_symbol        _bfd_generic_minisymbol_to_symbol
#define binary_bfd_reloc_type_lookup       _bfd_norelocs_bfd_reloc_type_lookup
#define binary_get_reloc_upper_bound        ((long (*) (bfd *, asection *)) bfd_0l)
#define binary_canonicalize_reloc           ((long (*) (bfd *, asection *, arelent **, asymbol **)) bfd_0l)
#define binary_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)

/* Set the architecture of a binary file.  */
#define binary_set_arch_mach _bfd_generic_set_arch_mach

/* Write section contents of a binary file.  */

static bfd_boolean
binary_set_section_contents (bfd *abfd,
			     asection *sec,
			     const void * data,
			     file_ptr offset,
			     bfd_size_type size)
{
  if (size == 0)
    return TRUE;

  if (! abfd->output_has_begun)
    {
      bfd_boolean found_low;
      bfd_vma low;
      asection *s;

      /* The lowest section LMA sets the virtual address of the start
         of the file.  We use this to set the file position of all the
         sections.  */
      found_low = FALSE;
      low = 0;
      for (s = abfd->sections; s != NULL; s = s->next)
	if (((s->flags
	      & (SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_NEVER_LOAD))
	     == (SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC))
	    && (s->size > 0)
	    && (! found_low || s->lma < low))
	  {
	    low = s->lma;
	    found_low = TRUE;
	  }

      for (s = abfd->sections; s != NULL; s = s->next)
	{
	  s->filepos = s->lma - low;

	  /* Skip following warning check for sections that will not
	     occupy file space.  */
	  if ((s->flags
	       & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_NEVER_LOAD))
	      != (SEC_HAS_CONTENTS | SEC_ALLOC)
	      || (s->size == 0))
	    continue;

	  /* If attempting to generate a binary file from a bfd with
	     LMA's all over the place, huge (sparse?) binary files may
	     result.  This condition attempts to detect this situation
	     and print a warning.  Better heuristics would be nice to
	     have.  */

	  if (s->filepos < 0)
	    (*_bfd_error_handler)
	      (_("Warning: Writing section `%s' to huge (ie negative) file offset 0x%lx."),
	       bfd_get_section_name (abfd, s),
	       (unsigned long) s->filepos);
	}

      abfd->output_has_begun = TRUE;
    }

  /* We don't want to output anything for a section that is neither
     loaded nor allocated.  The contents of such a section are not
     meaningful in the binary format.  */
  if ((sec->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
    return TRUE;
  if ((sec->flags & SEC_NEVER_LOAD) != 0)
    return TRUE;

  return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
}

/* No space is required for header information.  */

static int
binary_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
		       bfd_boolean exec ATTRIBUTE_UNUSED)
{
  return 0;
}

#define binary_bfd_get_relocated_section_contents  bfd_generic_get_relocated_section_contents
#define binary_bfd_relax_section                   bfd_generic_relax_section
#define binary_bfd_gc_sections                     bfd_generic_gc_sections
#define binary_bfd_merge_sections                  bfd_generic_merge_sections
#define binary_bfd_is_group_section                bfd_generic_is_group_section
#define binary_bfd_discard_group                   bfd_generic_discard_group
#define binary_section_already_linked             _bfd_generic_section_already_linked
#define binary_bfd_link_hash_table_create         _bfd_generic_link_hash_table_create
#define binary_bfd_link_hash_table_free           _bfd_generic_link_hash_table_free
#define binary_bfd_link_just_syms                 _bfd_generic_link_just_syms
#define binary_bfd_link_add_symbols               _bfd_generic_link_add_symbols
#define binary_bfd_final_link                     _bfd_generic_final_link
#define binary_bfd_link_split_section             _bfd_generic_link_split_section
#define binary_get_section_contents_in_window     _bfd_generic_get_section_contents_in_window

const bfd_target binary_vec =
{
  "binary",			/* name */
  bfd_target_unknown_flavour,	/* flavour */
  BFD_ENDIAN_UNKNOWN,		/* byteorder */
  BFD_ENDIAN_UNKNOWN,		/* header_byteorder */
  EXEC_P,			/* object_flags */
  (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
   | SEC_ROM | SEC_HAS_CONTENTS), /* section_flags */
  0,				/* symbol_leading_char */
  ' ',				/* ar_pad_char */
  16,				/* ar_max_namelen */
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* data */
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* hdrs */
  {				/* bfd_check_format */
    _bfd_dummy_target,
    binary_object_p,
    _bfd_dummy_target,
    _bfd_dummy_target,
  },
  {				/* bfd_set_format */
    bfd_false,
    binary_mkobject,
    bfd_false,
    bfd_false,
  },
  {				/* bfd_write_contents */
    bfd_false,
    bfd_true,
    bfd_false,
    bfd_false,
  },

  BFD_JUMP_TABLE_GENERIC (binary),
  BFD_JUMP_TABLE_COPY (_bfd_generic),
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
  BFD_JUMP_TABLE_SYMBOLS (binary),
  BFD_JUMP_TABLE_RELOCS (binary),
  BFD_JUMP_TABLE_WRITE (binary),
  BFD_JUMP_TABLE_LINK (binary),
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),

  NULL,

  NULL
};
Commit	Line	Data
252b5132	1	/* BFD back-end for binary objects.
72adc230	2	Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
c8e7bf0d	3	2004, 2005 Free Software Foundation, Inc.
252b5132 RH	4	Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>
252b5132 RH	5
b749473b	6	This file is part of BFD, the Binary File Descriptor library.
252b5132	7
b749473b NC	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
252b5132	12
b749473b NC	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
252b5132	17
b749473b NC	18	You should have received a copy of the GNU General Public License
b749473b NC	19	along with this program; if not, write to the Free Software
3e110533	20	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132 RH	21
	22	/* This is a BFD backend which may be used to write binary objects.
	23	It may only be used for output, not input. The intention is that
	24	this may be used as an output format for objcopy in order to
	25	generate raw binary data.
	26
	27	This is very simple. The only complication is that the real data
	28	will start at some address X, and in some cases we will not want to
	29	include X zeroes just to get to that point. Since the start
	30	address is not meaningful for this object file format, we use it
	31	instead to indicate the number of zeroes to skip at the start of
	32	the file. objcopy cooperates by specially setting the start
	33	address to zero by default. */
	34
252b5132 RH	35	#include "bfd.h"
252b5132 RH	36	#include "sysdep.h"
7e250b6c	37	#include "safe-ctype.h"
252b5132 RH	38	#include "libbfd.h"
	39
	40	/* Any bfd we create by reading a binary file has three symbols:
	41	a start symbol, an end symbol, and an absolute length symbol. */
	42	#define BIN_SYMS 3
	43
b749473b NC	44	/* Set by external programs - specifies the BFD architecture and
	45	machine number to be uses when creating binary BFDs. */
	46	enum bfd_architecture bfd_external_binary_architecture = bfd_arch_unknown;
	47	unsigned long bfd_external_machine = 0;
43a0748c	48
252b5132 RH	49	/* Create a binary object. Invoked via bfd_set_format. */
252b5132 RH	50
b34976b6	51	static bfd_boolean
c8e7bf0d	52	binary_mkobject (bfd *abfd ATTRIBUTE_UNUSED)
252b5132	53	{
b34976b6	54	return TRUE;
252b5132 RH	55	}
	56
	57	/* Any file may be considered to be a binary file, provided the target
	58	was not defaulted. That is, it must be explicitly specified as
	59	being binary. */
	60
	61	static const bfd_target *
c8e7bf0d	62	binary_object_p (bfd *abfd)
252b5132 RH	63	{
	64	struct stat statbuf;
	65	asection *sec;
	66
	67	if (abfd->target_defaulted)
	68	{
	69	bfd_set_error (bfd_error_wrong_format);
	70	return NULL;
	71	}
	72
	73	abfd->symcount = BIN_SYMS;
	74
	75	/* Find the file size. */
	76	if (bfd_stat (abfd, &statbuf) < 0)
	77	{
	78	bfd_set_error (bfd_error_system_call);
	79	return NULL;
	80	}
	81
	82	/* One data section. */
	83	sec = bfd_make_section (abfd, ".data");
	84	if (sec == NULL)
	85	return NULL;
	86	sec->flags = SEC_ALLOC \| SEC_LOAD \| SEC_DATA \| SEC_HAS_CONTENTS;
	87	sec->vma = 0;
eea6121a	88	sec->size = statbuf.st_size;
252b5132 RH	89	sec->filepos = 0;
252b5132 RH	90
c8e7bf0d	91	abfd->tdata.any = (void *) sec;
252b5132	92
43a0748c NC	93	if (bfd_get_arch_info (abfd) != NULL)
	94	{
	95	if ((bfd_get_arch_info (abfd)->arch == bfd_arch_unknown)
	96	&& (bfd_external_binary_architecture != bfd_arch_unknown))
b749473b NC	97	bfd_set_arch_info (abfd, bfd_lookup_arch
b749473b NC	98	(bfd_external_binary_architecture, bfd_external_machine));
43a0748c	99	}
dc810e39	100
252b5132 RH	101	return abfd->xvec;
	102	}
	103
c8e7bf0d NC	104	#define binary_close_and_cleanup _bfd_generic_close_and_cleanup
	105	#define binary_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
	106	#define binary_new_section_hook _bfd_generic_new_section_hook
252b5132 RH	107
	108	/* Get contents of the only section. */
	109
b34976b6	110	static bfd_boolean
c8e7bf0d NC	111	binary_get_section_contents (bfd *abfd,
	112	asection *section ATTRIBUTE_UNUSED,
	113	void * location,
	114	file_ptr offset,
	115	bfd_size_type count)
252b5132 RH	116	{
252b5132 RH	117	if (bfd_seek (abfd, offset, SEEK_SET) != 0
dc810e39	118	\|\| bfd_bread (location, count, abfd) != count)
b34976b6 AM	119	return FALSE;
b34976b6 AM	120	return TRUE;
252b5132 RH	121	}
	122
	123	/* Return the amount of memory needed to read the symbol table. */
	124
	125	static long
c8e7bf0d	126	binary_get_symtab_upper_bound (bfd *abfd ATTRIBUTE_UNUSED)
252b5132 RH	127	{
	128	return (BIN_SYMS + 1) * sizeof (asymbol *);
	129	}
	130
	131	/* Create a symbol name based on the bfd's filename. */
	132
	133	static char *
c8e7bf0d	134	mangle_name (bfd abfd, char suffix)
252b5132	135	{
dc810e39	136	bfd_size_type size;
252b5132 RH	137	char *buf;
	138	char *p;
	139
	140	size = (strlen (bfd_get_filename (abfd))
	141	+ strlen (suffix)
	142	+ sizeof "_binary__");
	143
c8e7bf0d	144	buf = bfd_alloc (abfd, size);
252b5132 RH	145	if (buf == NULL)
	146	return "";
	147
	148	sprintf (buf, "_binary_%s_%s", bfd_get_filename (abfd), suffix);
	149
	150	/* Change any non-alphanumeric characters to underscores. */
	151	for (p = buf; *p; p++)
3882b010	152	if (! ISALNUM (*p))
252b5132 RH	153	*p = '_';
	154
	155	return buf;
	156	}
	157
	158	/* Return the symbol table. */
	159
	160	static long
c8e7bf0d	161	binary_canonicalize_symtab (bfd abfd, asymbol *alocation)
252b5132 RH	162	{
	163	asection sec = (asection ) abfd->tdata.any;
	164	asymbol *syms;
	165	unsigned int i;
dc810e39	166	bfd_size_type amt = BIN_SYMS * sizeof (asymbol);
252b5132	167
c8e7bf0d	168	syms = bfd_alloc (abfd, amt);
252b5132	169	if (syms == NULL)
b34976b6	170	return 0;
252b5132 RH	171
	172	/* Start symbol. */
	173	syms[0].the_bfd = abfd;
	174	syms[0].name = mangle_name (abfd, "start");
	175	syms[0].value = 0;
	176	syms[0].flags = BSF_GLOBAL;
	177	syms[0].section = sec;
	178	syms[0].udata.p = NULL;
	179
	180	/* End symbol. */
	181	syms[1].the_bfd = abfd;
	182	syms[1].name = mangle_name (abfd, "end");
eea6121a	183	syms[1].value = sec->size;
252b5132 RH	184	syms[1].flags = BSF_GLOBAL;
	185	syms[1].section = sec;
	186	syms[1].udata.p = NULL;
	187
	188	/* Size symbol. */
	189	syms[2].the_bfd = abfd;
	190	syms[2].name = mangle_name (abfd, "size");
eea6121a	191	syms[2].value = sec->size;
252b5132 RH	192	syms[2].flags = BSF_GLOBAL;
	193	syms[2].section = bfd_abs_section_ptr;
	194	syms[2].udata.p = NULL;
	195
	196	for (i = 0; i < BIN_SYMS; i++)
	197	*alocation++ = syms++;
	198	*alocation = NULL;
	199
	200	return BIN_SYMS;
	201	}
	202
c8e7bf0d NC	203	#define binary_make_empty_symbol _bfd_generic_make_empty_symbol
c8e7bf0d NC	204	#define binary_print_symbol _bfd_nosymbols_print_symbol
252b5132 RH	205
	206	/* Get information about a symbol. */
	207
	208	static void
c8e7bf0d NC	209	binary_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
	210	asymbol *symbol,
	211	symbol_info *ret)
252b5132 RH	212	{
	213	bfd_symbol_info (symbol, ret);
	214	}
	215
c8e7bf0d NC	216	#define binary_bfd_is_local_label_name bfd_generic_is_local_label_name
	217	#define binary_get_lineno _bfd_nosymbols_get_lineno
	218	#define binary_find_nearest_line _bfd_nosymbols_find_nearest_line
4ab527b0	219	#define binary_find_inliner_info _bfd_nosymbols_find_inliner_info
c8e7bf0d NC	220	#define binary_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
	221	#define binary_read_minisymbols _bfd_generic_read_minisymbols
	222	#define binary_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
	223	#define binary_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
	224	#define binary_get_reloc_upper_bound ((long () (bfd , asection *)) bfd_0l)
	225	#define binary_canonicalize_reloc ((long () (bfd , asection , arelent , asymbol *)) bfd_0l)
3c9458e9	226	#define binary_bfd_is_target_special_symbol ((bfd_boolean () (bfd , asymbol *)) bfd_false)
252b5132 RH	227
	228	/* Set the architecture of a binary file. */
	229	#define binary_set_arch_mach _bfd_generic_set_arch_mach
	230
	231	/* Write section contents of a binary file. */
	232
b34976b6	233	static bfd_boolean
c8e7bf0d NC	234	binary_set_section_contents (bfd *abfd,
	235	asection *sec,
	236	const void * data,
	237	file_ptr offset,
	238	bfd_size_type size)
252b5132	239	{
3a71aec8	240	if (size == 0)
b34976b6	241	return TRUE;
3a71aec8	242
252b5132 RH	243	if (! abfd->output_has_begun)
252b5132 RH	244	{
b34976b6	245	bfd_boolean found_low;
252b5132 RH	246	bfd_vma low;
	247	asection *s;
	248
	249	/* The lowest section LMA sets the virtual address of the start
	250	of the file. We use this to set the file position of all the
	251	sections. */
b34976b6	252	found_low = FALSE;
252b5132 RH	253	low = 0;
	254	for (s = abfd->sections; s != NULL; s = s->next)
	255	if (((s->flags
	256	& (SEC_HAS_CONTENTS \| SEC_LOAD \| SEC_ALLOC \| SEC_NEVER_LOAD))
	257	== (SEC_HAS_CONTENTS \| SEC_LOAD \| SEC_ALLOC))
eea6121a	258	&& (s->size > 0)
252b5132 RH	259	&& (! found_low \|\| s->lma < low))
	260	{
	261	low = s->lma;
b34976b6	262	found_low = TRUE;
252b5132 RH	263	}
	264
	265	for (s = abfd->sections; s != NULL; s = s->next)
	266	{
	267	s->filepos = s->lma - low;
	268
	269	/* Skip following warning check for sections that will not
aebad5fe	270	occupy file space. */
252b5132 RH	271	if ((s->flags
252b5132 RH	272	& (SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_NEVER_LOAD))
3a71aec8	273	!= (SEC_HAS_CONTENTS \| SEC_ALLOC)
eea6121a	274	\|\| (s->size == 0))
252b5132 RH	275	continue;
	276
	277	/* If attempting to generate a binary file from a bfd with
	278	LMA's all over the place, huge (sparse?) binary files may
	279	result. This condition attempts to detect this situation
	280	and print a warning. Better heuristics would be nice to
aebad5fe	281	have. */
252b5132 RH	282
	283	if (s->filepos < 0)
	284	(*_bfd_error_handler)
	285	(_("Warning: Writing section `%s' to huge (ie negative) file offset 0x%lx."),
	286	bfd_get_section_name (abfd, s),
	287	(unsigned long) s->filepos);
	288	}
	289
b34976b6	290	abfd->output_has_begun = TRUE;
252b5132 RH	291	}
	292
	293	/* We don't want to output anything for a section that is neither
	294	loaded nor allocated. The contents of such a section are not
	295	meaningful in the binary format. */
	296	if ((sec->flags & (SEC_LOAD \| SEC_ALLOC)) == 0)
b34976b6	297	return TRUE;
252b5132	298	if ((sec->flags & SEC_NEVER_LOAD) != 0)
b34976b6	299	return TRUE;
252b5132 RH	300
	301	return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
	302	}
	303
	304	/* No space is required for header information. */
	305
	306	static int
c8e7bf0d NC	307	binary_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
c8e7bf0d NC	308	bfd_boolean exec ATTRIBUTE_UNUSED)
252b5132 RH	309	{
	310	return 0;
	311	}
	312
c8e7bf0d NC	313	#define binary_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
	314	#define binary_bfd_relax_section bfd_generic_relax_section
	315	#define binary_bfd_gc_sections bfd_generic_gc_sections
	316	#define binary_bfd_merge_sections bfd_generic_merge_sections
	317	#define binary_bfd_is_group_section bfd_generic_is_group_section
	318	#define binary_bfd_discard_group bfd_generic_discard_group
	319	#define binary_section_already_linked _bfd_generic_section_already_linked
	320	#define binary_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
	321	#define binary_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
	322	#define binary_bfd_link_just_syms _bfd_generic_link_just_syms
	323	#define binary_bfd_link_add_symbols _bfd_generic_link_add_symbols
	324	#define binary_bfd_final_link _bfd_generic_final_link
	325	#define binary_bfd_link_split_section _bfd_generic_link_split_section
	326	#define binary_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
252b5132 RH	327
	328	const bfd_target binary_vec =
	329	{
	330	"binary", /* name */
	331	bfd_target_unknown_flavour, /* flavour */
	332	BFD_ENDIAN_UNKNOWN, /* byteorder */
	333	BFD_ENDIAN_UNKNOWN, /* header_byteorder */
	334	EXEC_P, /* object_flags */
	335	(SEC_ALLOC \| SEC_LOAD \| SEC_READONLY \| SEC_CODE \| SEC_DATA
	336	\| SEC_ROM \| SEC_HAS_CONTENTS), /* section_flags */
	337	0, /* symbol_leading_char */
	338	' ', /* ar_pad_char */
	339	16, /* ar_max_namelen */
	340	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	341	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	342	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
	343	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	344	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	345	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
	346	{ /* bfd_check_format */
	347	_bfd_dummy_target,
c8e7bf0d	348	binary_object_p,
252b5132 RH	349	_bfd_dummy_target,
	350	_bfd_dummy_target,
	351	},
	352	{ /* bfd_set_format */
	353	bfd_false,
	354	binary_mkobject,
	355	bfd_false,
	356	bfd_false,
	357	},
	358	{ /* bfd_write_contents */
	359	bfd_false,
	360	bfd_true,
	361	bfd_false,
	362	bfd_false,
	363	},
	364
	365	BFD_JUMP_TABLE_GENERIC (binary),
	366	BFD_JUMP_TABLE_COPY (_bfd_generic),
	367	BFD_JUMP_TABLE_CORE (_bfd_nocore),
	368	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	369	BFD_JUMP_TABLE_SYMBOLS (binary),
	370	BFD_JUMP_TABLE_RELOCS (binary),
	371	BFD_JUMP_TABLE_WRITE (binary),
	372	BFD_JUMP_TABLE_LINK (binary),
	373	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	374
c3c89269	375	NULL,
aebad5fe	376
252b5132 RH	377	NULL
252b5132 RH	378	};