-/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+/* opncls.c -- open and close a BFD.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
+ 2001, 2002
+ Free Software Foundation, Inc.
-This file is part of BFD, the Binary File Diddler.
+ Written by Cygnus Support.
-BFD 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 1, or (at your option)
-any later version.
+ This file is part of BFD, the Binary File Descriptor library.
-BFD 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.
+ 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.
-You should have received a copy of the GNU General Public License
-along with BFD; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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.
-/* $Id$ */
+ 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. */
-/*** opncls.c -- open and close a bfd. */
-
-#include "sysdep.h"
#include "bfd.h"
+#include "sysdep.h"
+#include "objalloc.h"
#include "libbfd.h"
+#ifndef S_IXUSR
+#define S_IXUSR 0100 /* Execute by owner. */
+#endif
+#ifndef S_IXGRP
+#define S_IXGRP 0010 /* Execute by group. */
+#endif
+#ifndef S_IXOTH
+#define S_IXOTH 0001 /* Execute by others. */
+#endif
+
+/* Counter used to initialize the bfd identifier. */
-extern void bfd_cache_init();
-FILE *bfd_open_file();
+static unsigned int _bfd_id_counter = 0;
/* fdopen is a loser -- we should use stdio exclusively. Unfortunately
if we do that we can't use fcntl. */
-\f
-/** Locking
-
- Locking is loosely controlled by the preprocessor variable
- BFD_LOCKS. I say loosely because Unix barely understands locking
- -- at least in BSD it doesn't affect programs which don't
- explicitly use it! That is to say it's practically useless, though
- if everyone uses this library you'll be OK.
-
- From among the many and varied lock facilities available, (none of
- which, of course, knows about any other) we use the fcntl locks,
- because they're Posix.
-
- The reason that bfd_openr and bfd_fdopenr exist, yet only bfd_openw
- exists is because of locking. When we do output, we lock the
- filename file for output, then open a temporary file which does not
- actually get its correct filename until closing time. This is
- safest, but requires the asymmetry in read and write entry points.
-
- Perhaps, since unix has so many different kinds of locking anyway,
- we should use the emacs lock scheme?... */
-\f
-bfd *new_bfd()
+/* Return a new BFD. All BFD's are allocated through this routine. */
+
+bfd *
+_bfd_new_bfd ()
{
- bfd *nbfd = (bfd *)zalloc(sizeof(bfd));
+ bfd *nbfd;
+
+ nbfd = (bfd *) bfd_zmalloc ((bfd_size_type) sizeof (bfd));
+ if (nbfd == NULL)
+ return NULL;
+
+ nbfd->id = _bfd_id_counter++;
+
+ nbfd->memory = (PTR) objalloc_create ();
+ if (nbfd->memory == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ free (nbfd);
+ return NULL;
+ }
+
+ nbfd->arch_info = &bfd_default_arch_struct;
nbfd->direction = no_direction;
nbfd->iostream = NULL;
nbfd->where = 0;
- nbfd->sections = (asection *)NULL;
+ if (!bfd_hash_table_init_n (&nbfd->section_htab,
+ bfd_section_hash_newfunc,
+ 251))
+ {
+ free (nbfd);
+ return NULL;
+ }
+ nbfd->sections = (asection *) NULL;
+ nbfd->section_tail = &nbfd->sections;
nbfd->format = bfd_unknown;
- nbfd->my_archive = (bfd *)NULL;
- nbfd->origin = 0;
- nbfd->opened_once = false;
- nbfd->output_has_begun = false;
+ nbfd->my_archive = (bfd *) NULL;
+ nbfd->origin = 0;
+ nbfd->opened_once = FALSE;
+ nbfd->output_has_begun = FALSE;
nbfd->section_count = 0;
- nbfd->usrdata = (void *)NULL;
- nbfd->sections = (asection *)NULL;
- nbfd->cacheable = false;
- nbfd->flags = NO_FLAGS;
+ nbfd->usrdata = (PTR) NULL;
+ nbfd->cacheable = FALSE;
+ nbfd->flags = BFD_NO_FLAGS;
+ nbfd->mtime_set = FALSE;
+
+ return nbfd;
+}
+
+/* Allocate a new BFD as a member of archive OBFD. */
+
+bfd *
+_bfd_new_bfd_contained_in (obfd)
+ bfd *obfd;
+{
+ bfd *nbfd;
+
+ nbfd = _bfd_new_bfd ();
+ if (nbfd == NULL)
+ return NULL;
+ nbfd->xvec = obfd->xvec;
+ nbfd->my_archive = obfd;
+ nbfd->direction = read_direction;
+ nbfd->target_defaulted = obfd->target_defaulted;
return nbfd;
}
-bfd *new_bfd_contained_in(obfd)
-bfd *obfd;
+
+/* Delete a BFD. */
+
+void
+_bfd_delete_bfd (abfd)
+ bfd *abfd;
{
- bfd *nbfd = new_bfd(obfd);
- nbfd->xvec = obfd->xvec;
- nbfd->my_archive = obfd;
- nbfd->direction = read_direction;
- return nbfd;
+ bfd_hash_table_free (&abfd->section_htab);
+ objalloc_free ((struct objalloc *) abfd->memory);
+ free (abfd);
}
-/** bfd_openr, bfd_fdopenr -- open for reading.
- Returns a pointer to a freshly-allocated bfd on success, or NULL. */
+/*
+SECTION
+ Opening and closing BFDs
+
+*/
+
+/*
+FUNCTION
+ bfd_openr
+
+SYNOPSIS
+ bfd *bfd_openr(const char *filename, const char *target);
+
+DESCRIPTION
+ Open the file @var{filename} (using <<fopen>>) with the target
+ @var{target}. Return a pointer to the created BFD.
+
+ Calls <<bfd_find_target>>, so @var{target} is interpreted as by
+ that function.
+
+ If <<NULL>> is returned then an error has occured. Possible errors
+ are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or
+ <<system_call>> error.
+*/
bfd *
bfd_openr (filename, target)
- char *filename;
- char *target;
+ const char *filename;
+ const char *target;
{
bfd *nbfd;
- bfd_target *target_vec;
+ const bfd_target *target_vec;
- target_vec = bfd_find_target (target);
- if (target_vec == NULL) {
- bfd_error = invalid_target;
+ nbfd = _bfd_new_bfd ();
+ if (nbfd == NULL)
return NULL;
- }
- bfd_error = system_call_error;
- nbfd = new_bfd();
- if (nbfd == NULL) {
- bfd_error = no_memory;
- return NULL;
- }
+ target_vec = bfd_find_target (target, nbfd);
+ if (target_vec == NULL)
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
nbfd->filename = filename;
- nbfd->xvec = target_vec;
- nbfd->direction = read_direction;
+ nbfd->direction = read_direction;
+
+ if (bfd_open_file (nbfd) == NULL)
+ {
+ /* File didn't exist, or some such. */
+ bfd_set_error (bfd_error_system_call);
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
- if (bfd_open_file (nbfd) == NULL) {
- bfd_error = system_call_error; /* File didn't exist, or some such */
- free (nbfd);
- return NULL;
- }
return nbfd;
}
-
/* Don't try to `optimize' this function:
o - We lock using stack space so that interrupting the locking
won't cause a storage leak.
o - We open the file stream last, since we don't want to have to
close it if anything goes wrong. Closing the stream means closing
- the file descriptor too, even though we didn't open it.
- */
+ the file descriptor too, even though we didn't open it. */
+/*
+FUNCTION
+ bfd_fdopenr
+
+SYNOPSIS
+ bfd *bfd_fdopenr(const char *filename, const char *target, int fd);
+
+DESCRIPTION
+ <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to
+ <<fopen>>. It opens a BFD on a file already described by the
+ @var{fd} supplied.
+
+ When the file is later <<bfd_close>>d, the file descriptor will
+ be closed. If the caller desires that this file descriptor be
+ cached by BFD (opened as needed, closed as needed to free
+ descriptors for other opens), with the supplied @var{fd} used as
+ an initial file descriptor (but subject to closure at any time),
+ call bfd_set_cacheable(bfd, 1) on the returned BFD. The default
+ is to assume no cacheing; the file descriptor will remain open
+ until <<bfd_close>>, and will not be affected by BFD operations
+ on other files.
+
+ Possible errors are <<bfd_error_no_memory>>,
+ <<bfd_error_invalid_target>> and <<bfd_error_system_call>>.
+*/
bfd *
bfd_fdopenr (filename, target, fd)
- char *filename;
- char *target;
+ const char *filename;
+ const char *target;
int fd;
{
bfd *nbfd;
- bfd_target *target_vec;
+ const bfd_target *target_vec;
int fdflags;
-#ifdef BFD_LOCKS
- struct flock lock, *lockp = &lock;
-#endif
- target_vec = bfd_find_target (target);
- if (target_vec == NULL) {
- bfd_error = invalid_target;
+ bfd_set_error (bfd_error_system_call);
+#if ! defined(HAVE_FCNTL) || ! defined(F_GETFL)
+ fdflags = O_RDWR; /* Assume full access. */
+#else
+ fdflags = fcntl (fd, F_GETFL, NULL);
+#endif
+ if (fdflags == -1)
return NULL;
- }
- bfd_error = system_call_error;
-
- fdflags = fcntl (fd, F_GETFL);
- if (fdflags == -1) return NULL;
+ nbfd = _bfd_new_bfd ();
+ if (nbfd == NULL)
+ return NULL;
-#ifdef BFD_LOCKS
- lockp->l_type = F_RDLCK;
- if (fcntl (fd, F_SETLKW, lockp) == -1) return NULL;
+ target_vec = bfd_find_target (target, nbfd);
+ if (target_vec == NULL)
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
+
+#ifndef HAVE_FDOPEN
+ nbfd->iostream = (PTR) fopen (filename, FOPEN_RB);
+#else
+ /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */
+ switch (fdflags & (O_ACCMODE))
+ {
+ case O_RDONLY: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RB); break;
+ case O_WRONLY: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RUB); break;
+ case O_RDWR: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RUB); break;
+ default: abort ();
+ }
#endif
- nbfd = new_bfd();
-
- if (nbfd == NULL) {
- bfd_error = no_memory;
- return NULL;
- }
-#ifdef BFD_LOCKS
- nbfd->lock = (struct flock *) (nbfd + 1);
-#endif
- /* if the fd were open for read only, this still would not hurt: */
- nbfd->iostream = (char *) fdopen (fd, "r+");
- if (nbfd->iostream == NULL) {
- free (nbfd);
- return NULL;
- }
-
- /* OK, put everything where it belongs */
+ if (nbfd->iostream == NULL)
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
+ /* OK, put everything where it belongs. */
nbfd->filename = filename;
- nbfd->xvec = target_vec;
/* As a special case we allow a FD open for read/write to
be written through, although doing so requires that we end
the previous clause with a preposition. */
- switch (fdflags & O_ACCMODE) {
- case O_RDONLY: nbfd->direction = read_direction; break;
- case O_WRONLY: nbfd->direction = write_direction; break;
- case O_RDWR: nbfd->direction = both_direction; break;
- default: abort ();
- }
-
-#ifdef BFD_LOCKS
- memcpy (nbfd->lock, lockp, sizeof (struct flock))
-#endif
+ /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */
+ switch (fdflags & (O_ACCMODE))
+ {
+ case O_RDONLY: nbfd->direction = read_direction; break;
+ case O_WRONLY: nbfd->direction = write_direction; break;
+ case O_RDWR: nbfd->direction = both_direction; break;
+ default: abort ();
+ }
+
+ if (! bfd_cache_init (nbfd))
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
+ nbfd->opened_once = TRUE;
+
+ return nbfd;
+}
+
+/*
+FUNCTION
+ bfd_openstreamr
- bfd_cache_init (nbfd);
+SYNOPSIS
+ bfd *bfd_openstreamr(const char *, const char *, PTR);
+
+DESCRIPTION
+
+ Open a BFD for read access on an existing stdio stream. When
+ the BFD is passed to <<bfd_close>>, the stream will be closed.
+*/
+
+bfd *
+bfd_openstreamr (filename, target, streamarg)
+ const char *filename;
+ const char *target;
+ PTR streamarg;
+{
+ FILE *stream = (FILE *) streamarg;
+ bfd *nbfd;
+ const bfd_target *target_vec;
+
+ nbfd = _bfd_new_bfd ();
+ if (nbfd == NULL)
+ return NULL;
+
+ target_vec = bfd_find_target (target, nbfd);
+ if (target_vec == NULL)
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
+
+ nbfd->iostream = (PTR) stream;
+ nbfd->filename = filename;
+ nbfd->direction = read_direction;
+
+ if (! bfd_cache_init (nbfd))
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
return nbfd;
}
\f
-/** bfd_openw -- open for writing.
- Returns a pointer to a freshly-allocated bfd on success, or NULL.
+/* bfd_openw -- open for writing.
+ Returns a pointer to a freshly-allocated BFD on success, or NULL.
+
+ See comment by bfd_fdopenr before you try to modify this function. */
+
+/*
+FUNCTION
+ bfd_openw
+
+SYNOPSIS
+ bfd *bfd_openw(const char *filename, const char *target);
- See comment by bfd_fdopenr before you try to modify this function. */
+DESCRIPTION
+ Create a BFD, associated with file @var{filename}, using the
+ file format @var{target}, and return a pointer to it.
+
+ Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>,
+ <<bfd_error_invalid_target>>.
+*/
bfd *
bfd_openw (filename, target)
- char *filename;
- char *target;
+ const char *filename;
+ const char *target;
{
bfd *nbfd;
- bfd_target *target_vec;
-
- target_vec = bfd_find_target (target);
- if (target_vec == NULL) return NULL;
-
- bfd_error = system_call_error;
+ const bfd_target *target_vec;
/* nbfd has to point to head of malloc'ed block so that bfd_close may
- reclaim it correctly. */
-
- nbfd = new_bfd();
- if (nbfd == NULL) {
- bfd_error = no_memory;
+ reclaim it correctly. */
+ nbfd = _bfd_new_bfd ();
+ if (nbfd == NULL)
return NULL;
- }
+
+ target_vec = bfd_find_target (target, nbfd);
+ if (target_vec == NULL)
+ {
+ _bfd_delete_bfd (nbfd);
+ return NULL;
+ }
nbfd->filename = filename;
- nbfd->xvec = target_vec;
nbfd->direction = write_direction;
- if (bfd_open_file (nbfd) == NULL) {
- bfd_error = system_call_error; /* File not writeable, etc */
- free (nbfd);
- return NULL;
+ if (bfd_open_file (nbfd) == NULL)
+ {
+ /* File not writeable, etc. */
+ bfd_set_error (bfd_error_system_call);
+ _bfd_delete_bfd (nbfd);
+ return NULL;
}
+
return nbfd;
}
+/*
-\f
-/** Close up shop, get your deposit back. */
-boolean
+FUNCTION
+ bfd_close
+
+SYNOPSIS
+ bfd_boolean bfd_close (bfd *abfd);
+
+DESCRIPTION
+
+ Close a BFD. If the BFD was open for writing, then pending
+ operations are completed and the file written out and closed.
+ If the created file is executable, then <<chmod>> is called
+ to mark it as such.
+
+ All memory attached to the BFD is released.
+
+ The file descriptor associated with the BFD is closed (even
+ if it was passed in to BFD by <<bfd_fdopenr>>).
+
+RETURNS
+ <<TRUE>> is returned if all is ok, otherwise <<FALSE>>.
+*/
+
+
+bfd_boolean
bfd_close (abfd)
bfd *abfd;
{
- if (BFD_SEND (abfd, _close_and_cleanup, (abfd)) != true) return false;
-
- bfd_cache_close(abfd);
-/* If the file was open for writing and is now executable
- make it so */
- if (abfd->direction == write_direction
- && abfd->flags & EXEC_P) {
- struct stat buf;
- stat(abfd->filename, &buf);
- chmod(abfd->filename,buf.st_mode | S_IXUSR | S_IXGRP | S_IXOTH);
- }
- free (abfd);
- return true;
+ bfd_boolean ret;
+
+ if (bfd_write_p (abfd))
+ {
+ if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)))
+ return FALSE;
+ }
+
+ if (! BFD_SEND (abfd, _close_and_cleanup, (abfd)))
+ return FALSE;
+
+ ret = bfd_cache_close (abfd);
+
+ /* If the file was open for writing and is now executable,
+ make it so. */
+ if (ret
+ && abfd->direction == write_direction
+ && abfd->flags & EXEC_P)
+ {
+ struct stat buf;
+
+ if (stat (abfd->filename, &buf) == 0)
+ {
+ unsigned int mask = umask (0);
+
+ umask (mask);
+ chmod (abfd->filename,
+ (0777
+ & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask))));
+ }
+ }
+
+ _bfd_delete_bfd (abfd);
+
+ return ret;
}
-/*
- called to create a bfd with no ascociated file or target
- */
+
+/*
+FUNCTION
+ bfd_close_all_done
+
+SYNOPSIS
+ bfd_boolean bfd_close_all_done (bfd *);
+
+DESCRIPTION
+ Close a BFD. Differs from <<bfd_close>> since it does not
+ complete any pending operations. This routine would be used
+ if the application had just used BFD for swapping and didn't
+ want to use any of the writing code.
+
+ If the created file is executable, then <<chmod>> is called
+ to mark it as such.
+
+ All memory attached to the BFD is released.
+
+RETURNS
+ <<TRUE>> is returned if all is ok, otherwise <<FALSE>>.
+*/
+
+bfd_boolean
+bfd_close_all_done (abfd)
+ bfd *abfd;
+{
+ bfd_boolean ret;
+
+ ret = bfd_cache_close (abfd);
+
+ /* If the file was open for writing and is now executable,
+ make it so. */
+ if (ret
+ && abfd->direction == write_direction
+ && abfd->flags & EXEC_P)
+ {
+ struct stat buf;
+
+ if (stat (abfd->filename, &buf) == 0)
+ {
+ unsigned int mask = umask (0);
+
+ umask (mask);
+ chmod (abfd->filename,
+ (0777
+ & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask))));
+ }
+ }
+
+ _bfd_delete_bfd (abfd);
+
+ return ret;
+}
+
+/*
+FUNCTION
+ bfd_create
+
+SYNOPSIS
+ bfd *bfd_create(const char *filename, bfd *templ);
+
+DESCRIPTION
+ Create a new BFD in the manner of <<bfd_openw>>, but without
+ opening a file. The new BFD takes the target from the target
+ used by @var{template}. The format is always set to <<bfd_object>>.
+*/
+
bfd *
-bfd_create(filename, template)
-char *filename;
-bfd *template;
+bfd_create (filename, templ)
+ const char *filename;
+ bfd *templ;
{
- bfd *nbfd = new_bfd();
- if (nbfd == (bfd *)NULL) {
- bfd_error = no_memory;
- return (bfd *)NULL;
- }
+ bfd *nbfd;
+
+ nbfd = _bfd_new_bfd ();
+ if (nbfd == NULL)
+ return NULL;
nbfd->filename = filename;
- nbfd->xvec = template->xvec;
+ if (templ)
+ nbfd->xvec = templ->xvec;
nbfd->direction = no_direction;
+ bfd_set_format (nbfd, bfd_object);
+
return nbfd;
+}
+
+/*
+FUNCTION
+ bfd_make_writable
+SYNOPSIS
+ bfd_boolean bfd_make_writable (bfd *abfd);
+DESCRIPTION
+ Takes a BFD as created by <<bfd_create>> and converts it
+ into one like as returned by <<bfd_openw>>. It does this
+ by converting the BFD to BFD_IN_MEMORY. It's assumed that
+ you will call <<bfd_make_readable>> on this bfd later.
+RETURNS
+ <<TRUE>> is returned if all is ok, otherwise <<FALSE>>.
+*/
+
+bfd_boolean
+bfd_make_writable(abfd)
+ bfd *abfd;
+{
+ struct bfd_in_memory *bim;
+
+ if (abfd->direction != no_direction)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
+
+ bim = ((struct bfd_in_memory *)
+ bfd_malloc ((bfd_size_type) sizeof (struct bfd_in_memory)));
+ abfd->iostream = (PTR) bim;
+ /* bfd_bwrite will grow these as needed. */
+ bim->size = 0;
+ bim->buffer = 0;
+
+ abfd->flags |= BFD_IN_MEMORY;
+ abfd->direction = write_direction;
+ abfd->where = 0;
+
+ return TRUE;
+}
+
+/*
+FUNCTION
+ bfd_make_readable
+
+SYNOPSIS
+ bfd_boolean bfd_make_readable (bfd *abfd);
+
+DESCRIPTION
+ Takes a BFD as created by <<bfd_create>> and
+ <<bfd_make_writable>> and converts it into one like as
+ returned by <<bfd_openr>>. It does this by writing the
+ contents out to the memory buffer, then reversing the
+ direction.
+
+RETURNS
+ <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */
+
+bfd_boolean
+bfd_make_readable(abfd)
+ bfd *abfd;
+{
+ if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY))
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
+
+ if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)))
+ return FALSE;
+
+ if (! BFD_SEND (abfd, _close_and_cleanup, (abfd)))
+ return FALSE;
+
+
+ abfd->arch_info = &bfd_default_arch_struct;
+
+ abfd->where = 0;
+ abfd->format = bfd_unknown;
+ abfd->my_archive = (bfd *) NULL;
+ abfd->origin = 0;
+ abfd->opened_once = FALSE;
+ abfd->output_has_begun = FALSE;
+ abfd->section_count = 0;
+ abfd->usrdata = (PTR) NULL;
+ abfd->cacheable = FALSE;
+ abfd->flags = BFD_IN_MEMORY;
+ abfd->mtime_set = FALSE;
+
+ abfd->target_defaulted = TRUE;
+ abfd->direction = read_direction;
+ abfd->sections = 0;
+ abfd->symcount = 0;
+ abfd->outsymbols = 0;
+ abfd->tdata.any = 0;
+
+ bfd_section_list_clear (abfd);
+ bfd_check_format (abfd, bfd_object);
+
+ return TRUE;
+}
+
+/*
+INTERNAL_FUNCTION
+ bfd_alloc
+
+SYNOPSIS
+ PTR bfd_alloc (bfd *abfd, size_t wanted);
+
+DESCRIPTION
+ Allocate a block of @var{wanted} bytes of memory attached to
+ <<abfd>> and return a pointer to it.
+*/
+
+
+PTR
+bfd_alloc (abfd, size)
+ bfd *abfd;
+ bfd_size_type size;
+{
+ PTR ret;
+
+ if (size != (unsigned long) size)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ ret = objalloc_alloc (abfd->memory, (unsigned long) size);
+ if (ret == NULL)
+ bfd_set_error (bfd_error_no_memory);
+ return ret;
+}
+
+PTR
+bfd_zalloc (abfd, size)
+ bfd *abfd;
+ bfd_size_type size;
+{
+ PTR res;
+
+ res = bfd_alloc (abfd, size);
+ if (res)
+ memset (res, 0, (size_t) size);
+ return res;
+}
+
+/* Free a block allocated for a BFD.
+ Note: Also frees all more recently allocated blocks! */
+
+void
+bfd_release (abfd, block)
+ bfd *abfd;
+ PTR block;
+{
+ objalloc_free_block ((struct objalloc *) abfd->memory, block);
}