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/* Generic BFD library interface and support routines.

   Copyright (C) 1990-2015 Free Software Foundation, Inc.

   Written by Cygnus Support.

   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 3 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.  */

/*

INODE

typedef bfd, Error reporting, BFD front end, BFD front end

SECTION

	<>

	A BFD has type <>; objects of this type are the

	cornerstone of any application using BFD. Using BFD

	consists of making references though the BFD and to data in the BFD.

	Here is the structure that defines the type <>.  It

	contains the major data about the file and pointers

	to the rest of the data.

CODE_FRAGMENT

.

.enum bfd_direction

.  {

.    no_direction = 0,

.    read_direction = 1,

.    write_direction = 2,

.    both_direction = 3

.  };

.

.enum bfd_plugin_format

.  {

.    bfd_plugin_uknown = 0,

.    bfd_plugin_yes = 1,

.    bfd_plugin_no = 2

.  };

.

.struct bfd_build_id

.  {

.    bfd_size_type size;

.    bfd_byte data[1];

.  };

.

.struct bfd

.{

.  {* The filename the application opened the BFD with.  *}

.  const char *filename;

.

.  {* A pointer to the target jump table.  *}

.  const struct bfd_target *xvec;

.

.  {* The IOSTREAM, and corresponding IO vector that provide access

.     to the file backing the BFD.  *}

.  void *iostream;

.  const struct bfd_iovec *iovec;

.

.  {* The caching routines use these to maintain a

.     least-recently-used list of BFDs.  *}

.  struct bfd *lru_prev, *lru_next;

.

.  {* When a file is closed by the caching routines, BFD retains

.     state information on the file here...  *}

.  ufile_ptr where;

.

.  {* File modified time, if mtime_set is TRUE.  *}

.  long mtime;

.

.  {* A unique identifier of the BFD  *}

.  unsigned int id;

.

.  {* The format which belongs to the BFD. (object, core, etc.)  *}

.  ENUM_BITFIELD (bfd_format) format : 3;

.

.  {* The direction with which the BFD was opened.  *}

.  ENUM_BITFIELD (bfd_direction) direction : 2;

.

.  {* Format_specific flags.  *}

.  flagword flags : 18;

.

.  {* Values that may appear in the flags field of a BFD.  These also

.     appear in the object_flags field of the bfd_target structure, where

.     they indicate the set of flags used by that backend (not all flags

.     are meaningful for all object file formats) (FIXME: at the moment,

.     the object_flags values have mostly just been copied from backend

.     to another, and are not necessarily correct).  *}

.

.#define BFD_NO_FLAGS	0x00

.

.  {* BFD contains relocation entries.  *}

.#define HAS_RELOC   	0x01

.

.  {* BFD is directly executable.  *}

.#define EXEC_P      	0x02

.

.  {* BFD has line number information (basically used for F_LNNO in a

.     COFF header).  *}

.#define HAS_LINENO  	0x04

.

.  {* BFD has debugging information.  *}

.#define HAS_DEBUG   	0x08

.

.  {* BFD has symbols.  *}

.#define HAS_SYMS    	0x10

.

.  {* BFD has local symbols (basically used for F_LSYMS in a COFF

.     header).  *}

.#define HAS_LOCALS  	0x20

.

.  {* BFD is a dynamic object.  *}

.#define DYNAMIC     	0x40

.

.  {* Text section is write protected (if D_PAGED is not set, this is

.     like an a.out NMAGIC file) (the linker sets this by default, but

.     clears it for -r or -N).  *}

.#define WP_TEXT     	0x80

.

.  {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the

.     linker sets this by default, but clears it for -r or -n or -N).  *}

.#define D_PAGED     	0x100

.

.  {* BFD is relaxable (this means that bfd_relax_section may be able to

.     do something) (sometimes bfd_relax_section can do something even if

.     this is not set).  *}

.#define BFD_IS_RELAXABLE 0x200

.

.  {* This may be set before writing out a BFD to request using a

.     traditional format.  For example, this is used to request that when

.     writing out an a.out object the symbols not be hashed to eliminate

.     duplicates.  *}

.#define BFD_TRADITIONAL_FORMAT 0x400

.

.  {* This flag indicates that the BFD contents are actually cached

.     in memory.  If this is set, iostream points to a bfd_in_memory

.     struct.  *}

.#define BFD_IN_MEMORY 0x800

.

.  {* This BFD has been created by the linker and doesn't correspond

.     to any input file.  *}

.#define BFD_LINKER_CREATED 0x1000

.

.  {* This may be set before writing out a BFD to request that it

.     be written using values for UIDs, GIDs, timestamps, etc. that

.     will be consistent from run to run.  *}

.#define BFD_DETERMINISTIC_OUTPUT 0x2000

.

.  {* Compress sections in this BFD.  *}

.#define BFD_COMPRESS 0x4000

.

.  {* Decompress sections in this BFD.  *}

.#define BFD_DECOMPRESS 0x8000

.

.  {* BFD is a dummy, for plugins.  *}

.#define BFD_PLUGIN 0x10000

.

.  {* Compress sections in this BFD with SHF_COMPRESSED from gABI.  *}

.#define BFD_COMPRESS_GABI 0x20000

.

.  {* Flags bits to be saved in bfd_preserve_save.  *}

.#define BFD_FLAGS_SAVED \

.  (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_PLUGIN \

.   | BFD_COMPRESS_GABI)

.

.  {* Flags bits which are for BFD use only.  *}

.#define BFD_FLAGS_FOR_BFD_USE_MASK \

.  (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \

.   | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \

.   | BFD_COMPRESS_GABI)

.

.  {* Is the file descriptor being cached?  That is, can it be closed as

.     needed, and re-opened when accessed later?  *}

.  unsigned int cacheable : 1;

.

.  {* Marks whether there was a default target specified when the

.     BFD was opened. This is used to select which matching algorithm

.     to use to choose the back end.  *}

.  unsigned int target_defaulted : 1;

.

.  {* ... and here: (``once'' means at least once).  *}

.  unsigned int opened_once : 1;

.

.  {* Set if we have a locally maintained mtime value, rather than

.     getting it from the file each time.  *}

.  unsigned int mtime_set : 1;

.

.  {* Flag set if symbols from this BFD should not be exported.  *}

.  unsigned int no_export : 1;

.

.  {* Remember when output has begun, to stop strange things

.     from happening.  *}

.  unsigned int output_has_begun : 1;

.

.  {* Have archive map.  *}

.  unsigned int has_armap : 1;

.

.  {* Set if this is a thin archive.  *}

.  unsigned int is_thin_archive : 1;

.

.  {* Set if only required symbols should be added in the link hash table for

.     this object.  Used by VMS linkers.  *}

.  unsigned int selective_search : 1;

.

.  {* Set if this is the linker output BFD.  *}

.  unsigned int is_linker_output : 1;

.

.  {* Set if this is the linker input BFD.  *}

.  unsigned int is_linker_input : 1;

.

.  {* If this is an input for a compiler plug-in library.  *}

.  ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;

.

.  {* Set if this is a plugin output file.  *}

.  unsigned int lto_output : 1;

.

.  {* Set to dummy BFD created when claimed by a compiler plug-in

.     library.  *}

.  bfd *plugin_dummy_bfd;

.

.  {* Currently my_archive is tested before adding origin to

.     anything. I believe that this can become always an add of

.     origin, with origin set to 0 for non archive files.  *}

.  ufile_ptr origin;

.

.  {* The origin in the archive of the proxy entry.  This will

.     normally be the same as origin, except for thin archives,

.     when it will contain the current offset of the proxy in the

.     thin archive rather than the offset of the bfd in its actual

.     container.  *}

.  ufile_ptr proxy_origin;

.

.  {* A hash table for section names.  *}

.  struct bfd_hash_table section_htab;

.

.  {* Pointer to linked list of sections.  *}

.  struct bfd_section *sections;

.

.  {* The last section on the section list.  *}

.  struct bfd_section *section_last;

.

.  {* The number of sections.  *}

.  unsigned int section_count;

.

.  {* A field used by _bfd_generic_link_add_archive_symbols.  This will

.     be used only for archive elements.  *}

.  int archive_pass;

.

.  {* Stuff only useful for object files:

.     The start address.  *}

.  bfd_vma start_address;

.

.  {* Symbol table for output BFD (with symcount entries).

.     Also used by the linker to cache input BFD symbols.  *}

.  struct bfd_symbol  **outsymbols;

.

.  {* Used for input and output.  *}

.  unsigned int symcount;

.

.  {* Used for slurped dynamic symbol tables.  *}

.  unsigned int dynsymcount;

.

.  {* Pointer to structure which contains architecture information.  *}

.  const struct bfd_arch_info *arch_info;

.

.  {* Stuff only useful for archives.  *}

.  void *arelt_data;

.  struct bfd *my_archive;      {* The containing archive BFD.  *}

.  struct bfd *archive_next;    {* The next BFD in the archive.  *}

.  struct bfd *archive_head;    {* The first BFD in the archive.  *}

.  struct bfd *nested_archives; {* List of nested archive in a flattened

.                                  thin archive.  *}

.

.  union {

.    {* For input BFDs, a chain of BFDs involved in a link.  *}

.    struct bfd *next;

.    {* For output BFD, the linker hash table.  *}

.    struct bfd_link_hash_table *hash;

.  } link;

.

.  {* Used by the back end to hold private data.  *}

.  union

.    {

.      struct aout_data_struct *aout_data;

.      struct artdata *aout_ar_data;

.      struct _oasys_data *oasys_obj_data;

.      struct _oasys_ar_data *oasys_ar_data;

.      struct coff_tdata *coff_obj_data;

.      struct pe_tdata *pe_obj_data;

.      struct xcoff_tdata *xcoff_obj_data;

.      struct ecoff_tdata *ecoff_obj_data;

.      struct ieee_data_struct *ieee_data;

.      struct ieee_ar_data_struct *ieee_ar_data;

.      struct srec_data_struct *srec_data;

.      struct verilog_data_struct *verilog_data;

.      struct ihex_data_struct *ihex_data;

.      struct tekhex_data_struct *tekhex_data;

.      struct elf_obj_tdata *elf_obj_data;

.      struct nlm_obj_tdata *nlm_obj_data;

.      struct bout_data_struct *bout_data;

.      struct mmo_data_struct *mmo_data;

.      struct sun_core_struct *sun_core_data;

.      struct sco5_core_struct *sco5_core_data;

.      struct trad_core_struct *trad_core_data;

.      struct som_data_struct *som_data;

.      struct hpux_core_struct *hpux_core_data;

.      struct hppabsd_core_struct *hppabsd_core_data;

.      struct sgi_core_struct *sgi_core_data;

.      struct lynx_core_struct *lynx_core_data;

.      struct osf_core_struct *osf_core_data;

.      struct cisco_core_struct *cisco_core_data;

.      struct versados_data_struct *versados_data;

.      struct netbsd_core_struct *netbsd_core_data;

.      struct mach_o_data_struct *mach_o_data;

.      struct mach_o_fat_data_struct *mach_o_fat_data;

.      struct plugin_data_struct *plugin_data;

.      struct bfd_pef_data_struct *pef_data;

.      struct bfd_pef_xlib_data_struct *pef_xlib_data;

.      struct bfd_sym_data_struct *sym_data;

.      void *any;

.    }

.  tdata;

.

.  {* Used by the application to hold private data.  *}

.  void *usrdata;

.

.  {* Where all the allocated stuff under this BFD goes.  This is a

.     struct objalloc *, but we use void * to avoid requiring the inclusion

.     of objalloc.h.  *}

.  void *memory;

.

.  {* For input BFDs, the build ID, if the object has one. *}

.  const struct bfd_build_id *build_id;

.};

.

.{* See note beside bfd_set_section_userdata.  *}

.static inline bfd_boolean

.bfd_set_cacheable (bfd * abfd, bfd_boolean val)

.{

.  abfd->cacheable = val;

.  return TRUE;

.}

.

*/

#include "sysdep.h"

#include 

#include "bfd.h"

#include "bfdver.h"

#include "libiberty.h"

#include "demangle.h"

#include "safe-ctype.h"

#include "bfdlink.h"

#include "libbfd.h"

#include "coff/internal.h"

#include "coff/sym.h"

#include "libcoff.h"

#include "libecoff.h"

#undef obj_symbols

#include "elf-bfd.h"

#ifndef EXIT_FAILURE

#define EXIT_FAILURE 1

#endif

/* provide storage for subsystem, stack and heap data which may have been

   passed in on the command line.  Ld puts this data into a bfd_link_info

   struct which ultimately gets passed in to the bfd.  When it arrives, copy

   it to the following struct so that the data will be available in coffcode.h

   where it is needed.  The typedef's used are defined in bfd.h */

/*

INODE

Error reporting, Miscellaneous, typedef bfd, BFD front end

SECTION

	Error reporting

	Most BFD functions return nonzero on success (check their

	individual documentation for precise semantics).  On an error,

	they call <> to set an error condition that callers

	can check by calling <>.

        If that returns <>, then check

	<>.

	The easiest way to report a BFD error to the user is to

	use <>.

SUBSECTION

	Type <>

	The values returned by <> are defined by the

	enumerated type <>.

CODE_FRAGMENT

.

.typedef enum bfd_error

.{

.  bfd_error_no_error = 0,

.  bfd_error_system_call,

.  bfd_error_invalid_target,

.  bfd_error_wrong_format,

.  bfd_error_wrong_object_format,

.  bfd_error_invalid_operation,

.  bfd_error_no_memory,

.  bfd_error_no_symbols,

.  bfd_error_no_armap,

.  bfd_error_no_more_archived_files,

.  bfd_error_malformed_archive,

.  bfd_error_missing_dso,

.  bfd_error_file_not_recognized,

.  bfd_error_file_ambiguously_recognized,

.  bfd_error_no_contents,

.  bfd_error_nonrepresentable_section,

.  bfd_error_no_debug_section,

.  bfd_error_bad_value,

.  bfd_error_file_truncated,

.  bfd_error_file_too_big,

.  bfd_error_on_input,

.  bfd_error_invalid_error_code

.}

.bfd_error_type;

.

*/

static bfd_error_type bfd_error = bfd_error_no_error;

static bfd *input_bfd = NULL;

static bfd_error_type input_error = bfd_error_no_error;

const char *const bfd_errmsgs[] =

{

  N_("No error"),

  N_("System call error"),

  N_("Invalid bfd target"),

  N_("File in wrong format"),

  N_("Archive object file in wrong format"),

  N_("Invalid operation"),

  N_("Memory exhausted"),

  N_("No symbols"),

  N_("Archive has no index; run ranlib to add one"),

  N_("No more archived files"),

  N_("Malformed archive"),

  N_("DSO missing from command line"),

  N_("File format not recognized"),

  N_("File format is ambiguous"),

  N_("Section has no contents"),

  N_("Nonrepresentable section on output"),

  N_("Symbol needs debug section which does not exist"),

  N_("Bad value"),

  N_("File truncated"),

  N_("File too big"),

  N_("Error reading %s: %s"),

  N_("#")

};

/*

FUNCTION

	bfd_get_error

SYNOPSIS

	bfd_error_type bfd_get_error (void);

DESCRIPTION

	Return the current BFD error condition.

*/

bfd_error_type

bfd_get_error (void)

{

  return bfd_error;

}

/*

FUNCTION

	bfd_set_error

SYNOPSIS

	void bfd_set_error (bfd_error_type error_tag, ...);

DESCRIPTION

	Set the BFD error condition to be @var{error_tag}.

	If @var{error_tag} is bfd_error_on_input, then this function

	takes two more parameters, the input bfd where the error

	occurred, and the bfd_error_type error.

*/

void

bfd_set_error (bfd_error_type error_tag, ...)

{

  bfd_error = error_tag;

  if (error_tag == bfd_error_on_input)

    {

      /* This is an error that occurred during bfd_close when

	 writing an archive, but on one of the input files.  */

      va_list ap;

      va_start (ap, error_tag);

      input_bfd = va_arg (ap, bfd *);

      input_error = (bfd_error_type) va_arg (ap, int);

      if (input_error >= bfd_error_on_input)

	abort ();

      va_end (ap);

    }

}

/*

FUNCTION

	bfd_errmsg

SYNOPSIS

	const char *bfd_errmsg (bfd_error_type error_tag);

DESCRIPTION

	Return a string describing the error @var{error_tag}, or

	the system error if @var{error_tag} is <>.

*/

const char *

bfd_errmsg (bfd_error_type error_tag)

{

#ifndef errno

  extern int errno;

#endif

  if (error_tag == bfd_error_on_input)

    {

      char *buf;

      const char *msg = bfd_errmsg (input_error);

      if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)

	  != -1)

	return buf;

      /* Ick, what to do on out of memory?  */

      return msg;

    }

  if (error_tag == bfd_error_system_call)

    return xstrerror (errno);

  if (error_tag > bfd_error_invalid_error_code)

    error_tag = bfd_error_invalid_error_code;	/* sanity check */

  return _(bfd_errmsgs [error_tag]);

}

/*

FUNCTION

	bfd_perror

SYNOPSIS

	void bfd_perror (const char *message);

DESCRIPTION

	Print to the standard error stream a string describing the

	last BFD error that occurred, or the last system error if

	the last BFD error was a system call failure.  If @var{message}

	is non-NULL and non-empty, the error string printed is preceded

	by @var{message}, a colon, and a space.  It is followed by a newline.

*/

void

bfd_perror (const char *message)

{

  fflush (stdout);

  if (message == NULL || *message == '\0')

    fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));

  else

    fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));

  fflush (stderr);

}

/*

SUBSECTION

	BFD error handler

	Some BFD functions want to print messages describing the

	problem.  They call a BFD error handler function.  This

	function may be overridden by the program.

	The BFD error handler acts like printf.

CODE_FRAGMENT

.

.typedef void (*bfd_error_handler_type) (const char *, ...);

.

*/

/* The program name used when printing BFD error messages.  */

static const char *_bfd_error_program_name;

/* This is the default routine to handle BFD error messages.

   Like fprintf (stderr, ...), but also handles some extra format specifiers.

   %A section name from section.  For group components, print group name too.

   %B file name from bfd.  For archive components, prints archive too.

   Note - because these two extra format specifiers require special handling

   they are scanned for and processed in this function, before calling

   vfprintf.  This means that the *arguments* for these format specifiers

   must be the first ones in the variable argument list, regardless of where

   the specifiers appear in the format string.  Thus for example calling

   this function with a format string of:

      "blah %s blah %A blah %d blah %B"

   would involve passing the arguments as:

      "blah %s blah %A blah %d blah %B",

        asection_for_the_%A,

	bfd_for_the_%B,

	string_for_the_%s,

	integer_for_the_%d);

 */

void

_bfd_default_error_handler (const char *fmt, ...)

{

  va_list ap;

  char *bufp;

  const char *new_fmt, *p;

  size_t avail = 1000;

  char buf[1000];

  /* PR 4992: Don't interrupt output being sent to stdout.  */

  fflush (stdout);

  if (_bfd_error_program_name != NULL)

    fprintf (stderr, "%s: ", _bfd_error_program_name);

  else

    fprintf (stderr, "BFD: ");

  va_start (ap, fmt);

  new_fmt = fmt;

  bufp = buf;

  /* Reserve enough space for the existing format string.  */

  avail -= strlen (fmt) + 1;

  if (avail > 1000)

    _exit (EXIT_FAILURE);

  p = fmt;

  while (1)

    {

      char *q;

      size_t len, extra, trim;

      p = strchr (p, '%');

      if (p == NULL || p[1] == '\0')

	{

	  if (new_fmt == buf)

	    {

	      len = strlen (fmt);

	      memcpy (bufp, fmt, len + 1);

	    }

	  break;

	}

      if (p[1] == 'A' || p[1] == 'B')

	{

	  len = p - fmt;

	  memcpy (bufp, fmt, len);

	  bufp += len;

	  fmt = p + 2;

	  new_fmt = buf;

	  /* If we run out of space, tough, you lose your ridiculously

	     long file or section name.  It's not safe to try to alloc

	     memory here;  We might be printing an out of memory message.  */

	  if (avail == 0)

	    {

	      *bufp++ = '*';

	      *bufp++ = '*';

	      *bufp = '\0';

	    }

	  else

	    {

	      if (p[1] == 'B')

		{

		  bfd *abfd = va_arg (ap, bfd *);

		  if (abfd == NULL)

		    /* Invoking %B with a null bfd pointer is an internal error.  */

		    abort ();

		  else if (abfd->my_archive)

		    snprintf (bufp, avail, "%s(%s)",

			      abfd->my_archive->filename, abfd->filename);

		  else

		    snprintf (bufp, avail, "%s", abfd->filename);

		}

	      else

		{

		  asection *sec = va_arg (ap, asection *);

		  bfd *abfd;

		  const char *group = NULL;

		  struct coff_comdat_info *ci;

		  if (sec == NULL)

		    /* Invoking %A with a null section pointer is an internal error.  */

		    abort ();

		  abfd = sec->owner;

		  if (abfd != NULL

		      && bfd_get_flavour (abfd) == bfd_target_elf_flavour

		      && elf_next_in_group (sec) != NULL

		      && (sec->flags & SEC_GROUP) == 0)

		    group = elf_group_name (sec);

		  else if (abfd != NULL

			   && bfd_get_flavour (abfd) == bfd_target_coff_flavour

			   && (ci = bfd_coff_get_comdat_section (sec->owner,

								 sec)) != NULL)

		    group = ci->name;

		  if (group != NULL)

		    snprintf (bufp, avail, "%s[%s]", sec->name, group);

		  else

		    snprintf (bufp, avail, "%s", sec->name);

		}

	      len = strlen (bufp);

	      avail = avail - len + 2;

	      /* We need to replace any '%' we printed by "%%".

		 First count how many.  */

	      q = bufp;

	      bufp += len;

	      extra = 0;

	      while ((q = strchr (q, '%')) != NULL)

		{

		  ++q;

		  ++extra;

		}

	      /* If there isn't room, trim off the end of the string.  */

	      q = bufp;

	      bufp += extra;

	      if (extra > avail)

		{

		  trim = extra - avail;

		  bufp -= trim;

		  do

		    {

		      if (*--q == '%')

			--extra;

		    }

		  while (--trim != 0);

		  *q = '\0';

		  avail = extra;

		}

	      avail -= extra;

	      /* Now double all '%' chars, shuffling the string as we go.  */

	      while (extra != 0)

		{

		  while ((q[extra] = *q) != '%')

		    --q;

		  q[--extra] = '%';

		  --q;

		}

	    }

	}

      p = p + 2;

    }

  vfprintf (stderr, new_fmt, ap);

  va_end (ap);

  /* On AIX, putc is implemented as a macro that triggers a -Wunused-value

     warning, so use the fputc function to avoid it.  */

  fputc ('\n', stderr);

  fflush (stderr);

}

/* This is a function pointer to the routine which should handle BFD

   error messages.  It is called when a BFD routine encounters an

   error for which it wants to print a message.  Going through a

   function pointer permits a program linked against BFD to intercept

   the messages and deal with them itself.  */

bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;

/*

FUNCTION

	bfd_set_error_handler

SYNOPSIS

	bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);

DESCRIPTION

	Set the BFD error handler function.  Returns the previous

	function.

*/

bfd_error_handler_type

bfd_set_error_handler (bfd_error_handler_type pnew)

{

  bfd_error_handler_type pold;

  pold = _bfd_error_handler;

  _bfd_error_handler = pnew;

  return pold;

}

/*

FUNCTION

	bfd_set_error_program_name

SYNOPSIS

	void bfd_set_error_program_name (const char *);

DESCRIPTION

	Set the program name to use when printing a BFD error.  This

	is printed before the error message followed by a colon and

	space.  The string must not be changed after it is passed to

	this function.

*/

void

bfd_set_error_program_name (const char *name)

{

  _bfd_error_program_name = name;

}

/*

FUNCTION

	bfd_get_error_handler

SYNOPSIS

	bfd_error_handler_type bfd_get_error_handler (void);

DESCRIPTION

	Return the BFD error handler function.

*/

bfd_error_handler_type

bfd_get_error_handler (void)

{

  return _bfd_error_handler;

}

/*

SUBSECTION

	BFD assert handler

	If BFD finds an internal inconsistency, the bfd assert

	handler is called with information on the BFD version, BFD

	source file and line.  If this happens, most programs linked

	against BFD are expected to want to exit with an error, or mark

	the current BFD operation as failed, so it is recommended to

	override the default handler, which just calls

	_bfd_error_handler and continues.

CODE_FRAGMENT

.

.typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,

.                                         const char *bfd_version,

.                                         const char *bfd_file,

.                                         int bfd_line);

.

*/

/* Note the use of bfd_ prefix on the parameter names above: we want to

   show which one is the message and which is the version by naming the

   parameters, but avoid polluting the program-using-bfd namespace as

   the typedef is visible in the exported headers that the program

   includes.  Below, it's just for consistency.  */

static void

_bfd_default_assert_handler (const char *bfd_formatmsg,

			     const char *bfd_version,

			     const char *bfd_file,

			     int bfd_line)

{

  (*_bfd_error_handler) (bfd_formatmsg, bfd_version, bfd_file, bfd_line);

}

/* Similar to _bfd_error_handler, a program can decide to exit on an

   internal BFD error.  We use a non-variadic type to simplify passing

   on parameters to other functions, e.g. _bfd_error_handler.  */

bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler;

/*

FUNCTION

	bfd_set_assert_handler

SYNOPSIS

	bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);

DESCRIPTION

	Set the BFD assert handler function.  Returns the previous

	function.

*/

bfd_assert_handler_type

bfd_set_assert_handler (bfd_assert_handler_type pnew)

{

  bfd_assert_handler_type pold;

  pold = _bfd_assert_handler;

  _bfd_assert_handler = pnew;

  return pold;

}

/*

FUNCTION

	bfd_get_assert_handler

SYNOPSIS

	bfd_assert_handler_type bfd_get_assert_handler (void);

DESCRIPTION

	Return the BFD assert handler function.

*/

bfd_assert_handler_type

bfd_get_assert_handler (void)

{

  return _bfd_assert_handler;

}

/*

INODE

Miscellaneous, Memory Usage, Error reporting, BFD front end

SECTION

	Miscellaneous

SUBSECTION

	Miscellaneous functions

*/

/*

FUNCTION

	bfd_get_reloc_upper_bound

SYNOPSIS

	long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);

DESCRIPTION

	Return the number of bytes required to store the

	relocation information associated with section @var{sect}

	attached to bfd @var{abfd}.  If an error occurs, return -1.

*/

long

bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)

{

  if (abfd->format != bfd_object)

    {

      bfd_set_error (bfd_error_invalid_operation);

      return -1;

    }

  return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));

}

/*

FUNCTION

	bfd_canonicalize_reloc

SYNOPSIS

	long bfd_canonicalize_reloc

	  (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);

DESCRIPTION

	Call the back end associated with the open BFD

	@var{abfd} and translate the external form of the relocation

	information attached to @var{sec} into the internal canonical

	form.  Place the table into memory at @var{loc}, which has

	been preallocated, usually by a call to

	<>.  Returns the number of relocs, or

	-1 on error.

	The @var{syms} table is also needed for horrible internal magic

	reasons.

*/

long

bfd_canonicalize_reloc (bfd *abfd,

			sec_ptr asect,

			arelent **location,

			asymbol **symbols)

{

  if (abfd->format != bfd_object)

    {

      bfd_set_error (bfd_error_invalid_operation);

      return -1;

    }

  return BFD_SEND (abfd, _bfd_canonicalize_reloc,

		   (abfd, asect, location, symbols));

}

/*

FUNCTION

	bfd_set_reloc

SYNOPSIS

	void bfd_set_reloc

	  (bfd *abfd, asection *sec, arelent **rel, unsigned int count);

DESCRIPTION

	Set the relocation pointer and count within

	section @var{sec} to the values @var{rel} and @var{count}.

	The argument @var{abfd} is ignored.

*/

void

bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED,

	       sec_ptr asect,

	       arelent **location,

	       unsigned int count)

{

  asect->orelocation = location;

  asect->reloc_count = count;

}

/*

FUNCTION

	bfd_set_file_flags

SYNOPSIS

	bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);

DESCRIPTION

	Set the flag word in the BFD @var{abfd} to the value @var{flags}.

	Possible errors are:

	o <> - The target bfd was not of object format.

	o <> - The target bfd was open for reading.

	o <> -

	The flag word contained a bit which was not applicable to the

	type of file.  E.g., an attempt was made to set the <> bit

	on a BFD format which does not support demand paging.

*/

bfd_boolean

bfd_set_file_flags (bfd *abfd, flagword flags)

{

  if (abfd->format != bfd_object)

    {

      bfd_set_error (bfd_error_wrong_format);

      return FALSE;

    }

  if (bfd_read_p (abfd))

    {

      bfd_set_error (bfd_error_invalid_operation);

      return FALSE;

    }

  bfd_get_file_flags (abfd) = flags;

  if ((flags & bfd_applicable_file_flags (abfd)) != flags)

    {

      bfd_set_error (bfd_error_invalid_operation);

      return FALSE;

    }

  return TRUE;

}

void

bfd_assert (const char *file, int line)

{

  (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"),

			  BFD_VERSION_STRING, file, line);

}

/* A more or less friendly abort message.  In libbfd.h abort is

   defined to call this function.  */

void

_bfd_abort (const char *file, int line, const char *fn)

{

  if (fn != NULL)

    (*_bfd_error_handler)

      (_("BFD %s internal error, aborting at %s:%d in %s\n"),

       BFD_VERSION_STRING, file, line, fn);

  else

    (*_bfd_error_handler)

      (_("BFD %s internal error, aborting at %s:%d\n"),

       BFD_VERSION_STRING, file, line);

  (*_bfd_error_handler) (_("Please report this bug.\n"));

  _exit (EXIT_FAILURE);

}

/*

FUNCTION

	bfd_get_arch_size

SYNOPSIS

 	int bfd_get_arch_size (bfd *abfd);

DESCRIPTION

	Returns the normalized architecture address size, in bits, as

	determined by the object file's format.  By normalized, we mean

	either 32 or 64.  For ELF, this information is included in the

	header.  Use bfd_arch_bits_per_address for number of bits in

	the architecture address.

RETURNS

	Returns the arch size in bits if known, <<-1>> otherwise.

*/