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

/* BFD back-end for binary objects.
   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <ctype.h>

#include "bfd.h"
#include "sysdep.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

static boolean binary_mkobject PARAMS ((bfd *));
static const bfd_target *binary_object_p PARAMS ((bfd *));
static boolean binary_get_section_contents
  PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
static long binary_get_symtab_upper_bound PARAMS ((bfd *));
static char *mangle_name PARAMS ((bfd *, char *));
static long binary_get_symtab PARAMS ((bfd *, asymbol **));
static asymbol *binary_make_empty_symbol PARAMS ((bfd *));
static void binary_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
static boolean binary_set_section_contents
  PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
static int binary_sizeof_headers PARAMS ((bfd *, boolean));

/* Set by external programs - specifies the BFD architecture
   to use when creating binary BFDs.  */
enum bfd_architecture bfd_external_binary_architecture = bfd_arch_unknown;

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

static boolean
binary_mkobject (abfd)
     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 (abfd)
     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->_raw_size = statbuf.st_size;
  sec->filepos = 0;

  abfd->tdata.any = (PTR) 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, 0));
    }

  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 boolean
binary_get_section_contents (abfd, section, location, offset, count)
     bfd *abfd;
     asection *section ATTRIBUTE_UNUSED;
     PTR 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 (abfd)
     bfd *abfd ATTRIBUTE_UNUSED;
{
  return (BIN_SYMS + 1) * sizeof (asymbol *);
}

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

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

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

  buf = (char *) 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 ((unsigned char) *p))
      *p = '_';

  return buf;
}

/* Return the symbol table.  */

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

  syms = (asymbol *) bfd_alloc (abfd, amt);
  if (syms == NULL)
    return false;

  /* 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->_raw_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->_raw_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;
}

/* Make an empty symbol.  */

static asymbol *
binary_make_empty_symbol (abfd)
     bfd *abfd;
{
  return (asymbol *) bfd_alloc (abfd, (bfd_size_type) sizeof (asymbol));
}

#define binary_print_symbol _bfd_nosymbols_print_symbol

/* Get information about a symbol.  */

static void
binary_get_symbol_info (ignore_abfd, symbol, ret)
     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_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_get_reloc_upper_bound \
  ((long (*) PARAMS ((bfd *, asection *))) bfd_0l)
#define binary_canonicalize_reloc \
  ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l)
#define binary_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup

/* 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 boolean
binary_set_section_contents (abfd, sec, data, offset, size)
     bfd *abfd;
     asection *sec;
     PTR data;
     file_ptr offset;
     bfd_size_type size;
{
  if (size == 0)
    return true;

  if (! abfd->output_has_begun)
    {
      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->_raw_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->_raw_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 (abfd, exec)
     bfd *abfd ATTRIBUTE_UNUSED;
     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_link_hash_table_create _bfd_generic_link_hash_table_create
#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_check_format */
    _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.
dc810e39	2	Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
7898deda	3	Free Software Foundation, Inc.
252b5132 RH	4	Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>
	5
	6	This file is part of BFD, the Binary File Descriptor library.
	7
	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.
	12
	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.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	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
	35	#include <ctype.h>
	36
	37	#include "bfd.h"
	38	#include "sysdep.h"
	39	#include "libbfd.h"
	40
	41	/* Any bfd we create by reading a binary file has three symbols:
	42	a start symbol, an end symbol, and an absolute length symbol. */
	43	#define BIN_SYMS 3
	44
	45	static boolean binary_mkobject PARAMS ((bfd *));
	46	static const bfd_target binary_object_p PARAMS ((bfd ));
	47	static boolean binary_get_section_contents
	48	PARAMS ((bfd , asection , PTR, file_ptr, bfd_size_type));
	49	static long binary_get_symtab_upper_bound PARAMS ((bfd *));
	50	static char mangle_name PARAMS ((bfd , char *));
	51	static long binary_get_symtab PARAMS ((bfd , asymbol *));
	52	static asymbol binary_make_empty_symbol PARAMS ((bfd ));
	53	static void binary_get_symbol_info PARAMS ((bfd , asymbol , symbol_info *));
	54	static boolean binary_set_section_contents
	55	PARAMS ((bfd , asection , PTR, file_ptr, bfd_size_type));
	56	static int binary_sizeof_headers PARAMS ((bfd *, boolean));
	57
43a0748c NC	58	/* Set by external programs - specifies the BFD architecture
	59	to use when creating binary BFDs. */
	60	enum bfd_architecture bfd_external_binary_architecture = bfd_arch_unknown;
	61
252b5132 RH	62	/* Create a binary object. Invoked via bfd_set_format. */
	63
	64	static boolean
	65	binary_mkobject (abfd)
7442e600	66	bfd *abfd ATTRIBUTE_UNUSED;
252b5132 RH	67	{
	68	return true;
	69	}
	70
	71	/* Any file may be considered to be a binary file, provided the target
	72	was not defaulted. That is, it must be explicitly specified as
	73	being binary. */
	74
	75	static const bfd_target *
	76	binary_object_p (abfd)
	77	bfd *abfd;
	78	{
	79	struct stat statbuf;
	80	asection *sec;
	81
	82	if (abfd->target_defaulted)
	83	{
	84	bfd_set_error (bfd_error_wrong_format);
	85	return NULL;
	86	}
	87
	88	abfd->symcount = BIN_SYMS;
	89
	90	/* Find the file size. */
	91	if (bfd_stat (abfd, &statbuf) < 0)
	92	{
	93	bfd_set_error (bfd_error_system_call);
	94	return NULL;
	95	}
	96
	97	/* One data section. */
	98	sec = bfd_make_section (abfd, ".data");
	99	if (sec == NULL)
	100	return NULL;
	101	sec->flags = SEC_ALLOC \| SEC_LOAD \| SEC_DATA \| SEC_HAS_CONTENTS;
	102	sec->vma = 0;
	103	sec->_raw_size = statbuf.st_size;
	104	sec->filepos = 0;
	105
	106	abfd->tdata.any = (PTR) sec;
	107
43a0748c NC	108	if (bfd_get_arch_info (abfd) != NULL)
	109	{
	110	if ((bfd_get_arch_info (abfd)->arch == bfd_arch_unknown)
	111	&& (bfd_external_binary_architecture != bfd_arch_unknown))
	112	bfd_set_arch_info (abfd, bfd_lookup_arch (bfd_external_binary_architecture, 0));
	113	}
dc810e39	114
252b5132 RH	115	return abfd->xvec;
	116	}
	117
	118	#define binary_close_and_cleanup _bfd_generic_close_and_cleanup
	119	#define binary_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
	120	#define binary_new_section_hook _bfd_generic_new_section_hook
	121
	122	/* Get contents of the only section. */
	123
	124	static boolean
	125	binary_get_section_contents (abfd, section, location, offset, count)
	126	bfd *abfd;
7442e600	127	asection *section ATTRIBUTE_UNUSED;
252b5132 RH	128	PTR location;
	129	file_ptr offset;
	130	bfd_size_type count;
	131	{
	132	if (bfd_seek (abfd, offset, SEEK_SET) != 0
dc810e39	133	\|\| bfd_bread (location, count, abfd) != count)
252b5132 RH	134	return false;
	135	return true;
	136	}
	137
	138	/* Return the amount of memory needed to read the symbol table. */
	139
	140	static long
	141	binary_get_symtab_upper_bound (abfd)
7442e600	142	bfd *abfd ATTRIBUTE_UNUSED;
252b5132 RH	143	{
	144	return (BIN_SYMS + 1) * sizeof (asymbol *);
	145	}
	146
	147	/* Create a symbol name based on the bfd's filename. */
	148
	149	static char *
	150	mangle_name (abfd, suffix)
	151	bfd *abfd;
	152	char *suffix;
	153	{
dc810e39	154	bfd_size_type size;
252b5132 RH	155	char *buf;
	156	char *p;
	157
	158	size = (strlen (bfd_get_filename (abfd))
	159	+ strlen (suffix)
	160	+ sizeof "_binary__");
	161
	162	buf = (char *) bfd_alloc (abfd, size);
	163	if (buf == NULL)
	164	return "";
	165
	166	sprintf (buf, "_binary_%s_%s", bfd_get_filename (abfd), suffix);
	167
	168	/* Change any non-alphanumeric characters to underscores. */
	169	for (p = buf; *p; p++)
	170	if (! isalnum ((unsigned char) *p))
	171	*p = '_';
	172
	173	return buf;
	174	}
	175
	176	/* Return the symbol table. */
	177
	178	static long
	179	binary_get_symtab (abfd, alocation)
	180	bfd *abfd;
	181	asymbol **alocation;
	182	{
	183	asection sec = (asection ) abfd->tdata.any;
	184	asymbol *syms;
	185	unsigned int i;
dc810e39	186	bfd_size_type amt = BIN_SYMS * sizeof (asymbol);
252b5132	187
dc810e39	188	syms = (asymbol *) bfd_alloc (abfd, amt);
252b5132 RH	189	if (syms == NULL)
	190	return false;
	191
	192	/* Start symbol. */
	193	syms[0].the_bfd = abfd;
	194	syms[0].name = mangle_name (abfd, "start");
	195	syms[0].value = 0;
	196	syms[0].flags = BSF_GLOBAL;
	197	syms[0].section = sec;
	198	syms[0].udata.p = NULL;
	199
	200	/* End symbol. */
	201	syms[1].the_bfd = abfd;
	202	syms[1].name = mangle_name (abfd, "end");
	203	syms[1].value = sec->_raw_size;
	204	syms[1].flags = BSF_GLOBAL;
	205	syms[1].section = sec;
	206	syms[1].udata.p = NULL;
	207
	208	/* Size symbol. */
	209	syms[2].the_bfd = abfd;
	210	syms[2].name = mangle_name (abfd, "size");
	211	syms[2].value = sec->_raw_size;
	212	syms[2].flags = BSF_GLOBAL;
	213	syms[2].section = bfd_abs_section_ptr;
	214	syms[2].udata.p = NULL;
	215
	216	for (i = 0; i < BIN_SYMS; i++)
	217	*alocation++ = syms++;
	218	*alocation = NULL;
	219
	220	return BIN_SYMS;
	221	}
	222
	223	/* Make an empty symbol. */
	224
	225	static asymbol *
	226	binary_make_empty_symbol (abfd)
	227	bfd *abfd;
	228	{
dc810e39	229	return (asymbol *) bfd_alloc (abfd, (bfd_size_type) sizeof (asymbol));
252b5132 RH	230	}
	231
	232	#define binary_print_symbol _bfd_nosymbols_print_symbol
	233
	234	/* Get information about a symbol. */
	235
	236	static void
	237	binary_get_symbol_info (ignore_abfd, symbol, ret)
7442e600	238	bfd *ignore_abfd ATTRIBUTE_UNUSED;
252b5132 RH	239	asymbol *symbol;
	240	symbol_info *ret;
	241	{
	242	bfd_symbol_info (symbol, ret);
	243	}
	244
	245	#define binary_bfd_is_local_label_name bfd_generic_is_local_label_name
	246	#define binary_get_lineno _bfd_nosymbols_get_lineno
	247	#define binary_find_nearest_line _bfd_nosymbols_find_nearest_line
	248	#define binary_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
	249	#define binary_read_minisymbols _bfd_generic_read_minisymbols
	250	#define binary_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
	251
	252	#define binary_get_reloc_upper_bound \
	253	((long () PARAMS ((bfd , asection *))) bfd_0l)
	254	#define binary_canonicalize_reloc \
	255	((long () PARAMS ((bfd , asection , arelent , asymbol *))) bfd_0l)
	256	#define binary_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
	257
	258	/* Set the architecture of a binary file. */
	259	#define binary_set_arch_mach _bfd_generic_set_arch_mach
	260
	261	/* Write section contents of a binary file. */
	262
	263	static boolean
	264	binary_set_section_contents (abfd, sec, data, offset, size)
	265	bfd *abfd;
	266	asection *sec;
	267	PTR data;
	268	file_ptr offset;
	269	bfd_size_type size;
	270	{
3a71aec8 NC	271	if (size == 0)
	272	return true;
	273
252b5132 RH	274	if (! abfd->output_has_begun)
	275	{
	276	boolean found_low;
	277	bfd_vma low;
	278	asection *s;
	279
	280	/* The lowest section LMA sets the virtual address of the start
	281	of the file. We use this to set the file position of all the
	282	sections. */
	283	found_low = false;
	284	low = 0;
	285	for (s = abfd->sections; s != NULL; s = s->next)
	286	if (((s->flags
	287	& (SEC_HAS_CONTENTS \| SEC_LOAD \| SEC_ALLOC \| SEC_NEVER_LOAD))
	288	== (SEC_HAS_CONTENTS \| SEC_LOAD \| SEC_ALLOC))
3a71aec8	289	&& (s->_raw_size > 0)
252b5132 RH	290	&& (! found_low \|\| s->lma < low))
	291	{
	292	low = s->lma;
	293	found_low = true;
	294	}
	295
	296	for (s = abfd->sections; s != NULL; s = s->next)
	297	{
	298	s->filepos = s->lma - low;
	299
	300	/* Skip following warning check for sections that will not
aebad5fe	301	occupy file space. */
252b5132 RH	302	if ((s->flags
252b5132 RH	303	& (SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_NEVER_LOAD))
3a71aec8 NC	304	!= (SEC_HAS_CONTENTS \| SEC_ALLOC)
3a71aec8 NC	305	\|\| (s->_raw_size == 0))
252b5132 RH	306	continue;
	307
	308	/* If attempting to generate a binary file from a bfd with
	309	LMA's all over the place, huge (sparse?) binary files may
	310	result. This condition attempts to detect this situation
	311	and print a warning. Better heuristics would be nice to
aebad5fe	312	have. */
252b5132 RH	313
	314	if (s->filepos < 0)
	315	(*_bfd_error_handler)
	316	(_("Warning: Writing section `%s' to huge (ie negative) file offset 0x%lx."),
	317	bfd_get_section_name (abfd, s),
	318	(unsigned long) s->filepos);
	319	}
	320
	321	abfd->output_has_begun = true;
	322	}
	323
	324	/* We don't want to output anything for a section that is neither
	325	loaded nor allocated. The contents of such a section are not
	326	meaningful in the binary format. */
	327	if ((sec->flags & (SEC_LOAD \| SEC_ALLOC)) == 0)
	328	return true;
	329	if ((sec->flags & SEC_NEVER_LOAD) != 0)
	330	return true;
	331
	332	return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
	333	}
	334
	335	/* No space is required for header information. */
	336
	337	static int
	338	binary_sizeof_headers (abfd, exec)
7442e600 ILT	339	bfd *abfd ATTRIBUTE_UNUSED;
7442e600 ILT	340	boolean exec ATTRIBUTE_UNUSED;
252b5132 RH	341	{
	342	return 0;
	343	}
	344
	345	#define binary_bfd_get_relocated_section_contents \
	346	bfd_generic_get_relocated_section_contents
	347	#define binary_bfd_relax_section bfd_generic_relax_section
	348	#define binary_bfd_gc_sections bfd_generic_gc_sections
8550eb6e	349	#define binary_bfd_merge_sections bfd_generic_merge_sections
252b5132 RH	350	#define binary_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
	351	#define binary_bfd_link_add_symbols _bfd_generic_link_add_symbols
	352	#define binary_bfd_final_link _bfd_generic_final_link
	353	#define binary_bfd_link_split_section _bfd_generic_link_split_section
	354	#define binary_get_section_contents_in_window \
	355	_bfd_generic_get_section_contents_in_window
	356
	357	const bfd_target binary_vec =
	358	{
	359	"binary", /* name */
	360	bfd_target_unknown_flavour, /* flavour */
	361	BFD_ENDIAN_UNKNOWN, /* byteorder */
	362	BFD_ENDIAN_UNKNOWN, /* header_byteorder */
	363	EXEC_P, /* object_flags */
	364	(SEC_ALLOC \| SEC_LOAD \| SEC_READONLY \| SEC_CODE \| SEC_DATA
	365	\| SEC_ROM \| SEC_HAS_CONTENTS), /* section_flags */
	366	0, /* symbol_leading_char */
	367	' ', /* ar_pad_char */
	368	16, /* ar_max_namelen */
	369	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	370	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	371	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
	372	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	373	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	374	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
	375	{ /* bfd_check_format */
	376	_bfd_dummy_target,
	377	binary_object_p, /* bfd_check_format */
	378	_bfd_dummy_target,
	379	_bfd_dummy_target,
	380	},
	381	{ /* bfd_set_format */
	382	bfd_false,
	383	binary_mkobject,
	384	bfd_false,
	385	bfd_false,
	386	},
	387	{ /* bfd_write_contents */
	388	bfd_false,
	389	bfd_true,
	390	bfd_false,
	391	bfd_false,
	392	},
	393
	394	BFD_JUMP_TABLE_GENERIC (binary),
	395	BFD_JUMP_TABLE_COPY (_bfd_generic),
	396	BFD_JUMP_TABLE_CORE (_bfd_nocore),
	397	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	398	BFD_JUMP_TABLE_SYMBOLS (binary),
	399	BFD_JUMP_TABLE_RELOCS (binary),
	400	BFD_JUMP_TABLE_WRITE (binary),
	401	BFD_JUMP_TABLE_LINK (binary),
	402	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	403
c3c89269	404	NULL,
aebad5fe	405
252b5132 RH	406	NULL
252b5132 RH	407	};