/* opncls.c -- open and close a BFD.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright (C) 1990 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-/* $Id$ */
-
-#include <sysdep.h>
#include "bfd.h"
+#include "sysdep.h"
#include "libbfd.h"
#include "obstack.h"
-extern void bfd_cache_init();
-FILE *bfd_open_file();
+
+#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
/* fdopen is a loser -- we should use stdio exclusively. Unfortunately
if we do that we can't use fcntl. */
#define obstack_chunk_alloc malloc
#define obstack_chunk_free free
+#ifndef HAVE_GETPAGESIZE
+#define getpagesize() 2048
+#endif
+
+long _bfd_chunksize = -1;
+
/* Return a new BFD. All BFD's are allocated through this routine. */
-bfd *new_bfd()
+bfd *
+_bfd_new_bfd ()
{
bfd *nbfd;
- nbfd = (bfd *)zalloc (sizeof (bfd));
+ nbfd = (bfd *)bfd_zmalloc (sizeof (bfd));
if (!nbfd)
return 0;
- obstack_begin(&nbfd->memory, 128);
-
+ if (_bfd_chunksize <= 0)
+ {
+ _bfd_chunksize = getpagesize ();
+ if (_bfd_chunksize <= 0)
+ _bfd_chunksize = 2048;
+ /* Leave some slush space, since many malloc implementations
+ prepend a header, and may wind up wasting another page
+ because of it. */
+ _bfd_chunksize -= 32;
+ }
+
+ if (!obstack_begin(&nbfd->memory, _bfd_chunksize))
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return 0;
+ }
+
+ nbfd->arch_info = &bfd_default_arch_struct;
+
nbfd->direction = no_direction;
nbfd->iostream = NULL;
nbfd->where = 0;
nbfd->sections = (asection *)NULL;
nbfd->format = bfd_unknown;
nbfd->my_archive = (bfd *)NULL;
- nbfd->origin = 0;
+ nbfd->origin = 0;
nbfd->opened_once = false;
nbfd->output_has_begun = false;
nbfd->section_count = 0;
nbfd->usrdata = (PTR)NULL;
- nbfd->sections = (asection *)NULL;
nbfd->cacheable = false;
nbfd->flags = NO_FLAGS;
- nbfd->mtime_set = 0;
+ nbfd->mtime_set = false;
+
return nbfd;
}
/* Allocate a new BFD as a member of archive OBFD. */
-bfd *new_bfd_contained_in(obfd)
-bfd *obfd;
+bfd *
+_bfd_new_bfd_contained_in (obfd)
+ bfd *obfd;
{
- bfd *nbfd = new_bfd();
- nbfd->xvec = obfd->xvec;
- nbfd->my_archive = obfd;
- nbfd->direction = read_direction;
- return nbfd;
+ bfd *nbfd;
+
+ nbfd = _bfd_new_bfd();
+ nbfd->xvec = obfd->xvec;
+ nbfd->my_archive = obfd;
+ nbfd->direction = read_direction;
+ nbfd->target_defaulted = obfd->target_defaulted;
+ return nbfd;
}
-/*doc*
-@section Opening and Closing BFDs
+/*
+SECTION
+ Opening and closing BFDs
*/
-/*proto*
-*i bfd_openr
-Opens the file supplied (using @code{fopen}) with the target supplied, it
-returns a pointer to the created BFD.
-If NULL is returned then an error has occured.
-Possible errors are no_memory, invalid_target or system_call error.
-*; PROTO(bfd*, bfd_openr, (CONST char *filename,CONST char*target));
-*-*/
+/*
+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 *
-DEFUN(bfd_openr, (filename, target),
- CONST char *filename AND
- CONST char *target)
+bfd_openr (filename, target)
+ CONST char *filename;
+ CONST char *target;
{
bfd *nbfd;
- bfd_target *target_vec;
+ const bfd_target *target_vec;
- nbfd = new_bfd();
- if (nbfd == NULL) {
- bfd_error = no_memory;
+ nbfd = _bfd_new_bfd();
+ if (nbfd == NULL)
return NULL;
- }
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL) {
- bfd_error = invalid_target;
+ bfd_set_error (bfd_error_invalid_target);
return NULL;
}
nbfd->filename = filename;
- nbfd->direction = read_direction;
+ nbfd->direction = read_direction;
if (bfd_open_file (nbfd) == NULL) {
- bfd_error = system_call_error; /* File didn't exist, or some such */
+ bfd_set_error (bfd_error_system_call); /* File didn't exist, or some such */
bfd_release(nbfd,0);
return NULL;
}
close it if anything goes wrong. Closing the stream means closing
the file descriptor too, even though we didn't open it.
*/
-/*proto*
-*i bfd_fdopenr
-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.
-
-Possible errors are no_memory, invalid_target and system_call error.
-*; PROTO(bfd *, bfd_fdopenr,
- (CONST char *filename, CONST char *target, int fd));
-*-*/
+/*
+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 *
-DEFUN(bfd_fdopenr,(filename, target, fd),
- CONST char *filename AND
- CONST char *target AND
- int fd)
+bfd_fdopenr (filename, target, fd)
+ CONST char *filename;
+ CONST char *target;
+ int fd;
{
bfd *nbfd;
- bfd_target *target_vec;
+ const bfd_target *target_vec;
int fdflags;
- bfd_error = system_call_error;
-
-#ifdef NO_FCNTL
+ 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;
- nbfd = new_bfd();
+ nbfd = _bfd_new_bfd();
- if (nbfd == NULL) {
- bfd_error = no_memory;
+ if (nbfd == NULL)
return NULL;
- }
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL) {
- bfd_error = invalid_target;
+ bfd_set_error (bfd_error_invalid_target);
return NULL;
}
-
- /* if the fd were open for read only, this still would not hurt: */
- nbfd->iostream = (char *) fdopen (fd, "r+");
+#if defined(VMS) || defined(__GO32__) || defined (WINGDB)
+ 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
if (nbfd->iostream == NULL) {
(void) obstack_free (&nbfd->memory, (PTR)0);
return NULL;
}
-
+
/* OK, put everything where it belongs */
nbfd->filename = filename;
/* 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) {
+ /* (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_WRONLY: nbfd->direction = write_direction; break;
case O_RDWR: nbfd->direction = both_direction; break;
default: abort ();
}
-
- bfd_cache_init (nbfd);
+
+ if (! bfd_cache_init (nbfd))
+ return NULL;
+
+ return nbfd;
+}
+
+/*
+FUNCTION
+ bfd_openstreamr
+
+SYNOPSIS
+ bfd *bfd_openstreamr();
+
+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, stream)
+ const char *filename;
+ const char *target;
+ FILE *stream;
+{
+ 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_set_error (bfd_error_invalid_target);
+ return NULL;
+ }
+
+ nbfd->iostream = (PTR) stream;
+ nbfd->filename = filename;
+ nbfd->direction = read_direction;
+
+ if (! bfd_cache_init (nbfd))
+ return NULL;
return nbfd;
}
See comment by bfd_fdopenr before you try to modify this function. */
-/*proto* bfd_openw
-Creates a BFD, associated with file @var{filename}, using the file
-format @var{target}, and returns a pointer to it.
+/*
+FUNCTION
+ bfd_openw
+
+SYNOPSIS
+ bfd *bfd_openw(CONST char *filename, CONST char *target);
+
+DESCRIPTION
+ Create a BFD, associated with file @var{filename}, using the
+ file format @var{target}, and return a pointer to it.
-Possible errors are system_call_error, no_memory, invalid_target.
-*; PROTO(bfd *, bfd_openw, (CONST char *filename, CONST char *target));
+ Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>,
+ <<bfd_error_invalid_target>>.
*/
bfd *
-DEFUN(bfd_openw,(filename, target),
- CONST char *filename AND
- CONST char *target)
+bfd_openw (filename, target)
+ CONST char *filename;
+ CONST char *target;
{
bfd *nbfd;
- bfd_target *target_vec;
-
- bfd_error = system_call_error;
+ const bfd_target *target_vec;
+
+ bfd_set_error (bfd_error_system_call);
/* 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;
+ nbfd = _bfd_new_bfd();
+ if (nbfd == NULL)
return NULL;
- }
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL) return NULL;
nbfd->direction = write_direction;
if (bfd_open_file (nbfd) == NULL) {
- bfd_error = system_call_error; /* File not writeable, etc */
+ bfd_set_error (bfd_error_system_call); /* File not writeable, etc */
(void) obstack_free (&nbfd->memory, (PTR)0);
return NULL;
}
return nbfd;
}
-/*proto* bfd_close
-This function closes 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 @code{chmod} is called to mark
-it as such.
+/*
+
+FUNCTION
+ bfd_close
+
+SYNOPSIS
+ boolean bfd_close(bfd *abfd);
-All memory attached to the BFD's obstacks is released.
+DESCRIPTION
-@code{true} is returned if all is ok, otherwise @code{false}.
-*; PROTO(boolean, bfd_close,(bfd *));
+ 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's obstacks 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>>.
*/
+
boolean
-DEFUN(bfd_close,(abfd),
- bfd *abfd)
+bfd_close (abfd)
+ bfd *abfd;
{
- if (!bfd_read_p(abfd))
- if (BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)) != true)
- return false;
+ boolean ret;
+
+ if (!bfd_read_p (abfd))
+ {
+ if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)))
+ return false;
+ }
- if (BFD_SEND (abfd, _close_and_cleanup, (abfd)) != true) return false;
+ if (! BFD_SEND (abfd, _close_and_cleanup, (abfd)))
+ return false;
- bfd_cache_close(abfd);
+ ret = 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);
-#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
+ if (ret
+ && abfd->direction == write_direction
+ && abfd->flags & EXEC_P)
+ {
+ struct stat buf;
+
+ if (stat (abfd->filename, &buf) == 0)
+ {
+ int mask = umask (0);
+ umask (mask);
+ chmod (abfd->filename,
+ (0777
+ & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask))));
+ }
+ }
- chmod(abfd->filename,buf.st_mode | S_IXUSR | S_IXGRP | S_IXOTH);
- }
(void) obstack_free (&abfd->memory, (PTR)0);
- /* FIXME, shouldn't we de-allocate the bfd as well? */
- return true;
+ (void) free (abfd);
+
+ return ret;
+}
+
+/*
+FUNCTION
+ bfd_close_all_done
+
+SYNOPSIS
+ 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's obstacks is released.
+
+RETURNS
+ <<true>> is returned if all is ok, otherwise <<false>>.
+
+*/
+
+boolean
+bfd_close_all_done (abfd)
+ bfd *abfd;
+{
+ 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)
+ {
+ int mask = umask (0);
+ umask (mask);
+ chmod (abfd->filename,
+ (0x777
+ & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask))));
+ }
+ }
+ (void) obstack_free (&abfd->memory, (PTR)0);
+ (void) free(abfd);
+ return ret;
}
-/*proto* bfd_create
-This routine creates a new BFD in the manner of @code{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 @code{bfd_object}.
-*; PROTO(bfd *, bfd_create, (CONST char *filename, bfd *template));
+/*
+FUNCTION
+ bfd_alloc_size
+
+SYNOPSIS
+ bfd_size_type bfd_alloc_size(bfd *abfd);
+
+DESCRIPTION
+ Return the number of bytes in the obstacks connected to @var{abfd}.
+
+*/
+
+bfd_size_type
+bfd_alloc_size (abfd)
+ bfd *abfd;
+{
+ struct _obstack_chunk *chunk = abfd->memory.chunk;
+ size_t size = 0;
+ while (chunk) {
+ size += chunk->limit - &(chunk->contents[0]);
+ chunk = chunk->prev;
+ }
+ return size;
+}
+
+
+
+/*
+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 *
-DEFUN(bfd_create,(filename, template),
- CONST char *filename AND
- bfd *template)
+bfd_create (filename, templ)
+ CONST char *filename;
+ bfd *templ;
{
- bfd *nbfd = new_bfd();
- if (nbfd == (bfd *)NULL) {
- bfd_error = no_memory;
+ bfd *nbfd = _bfd_new_bfd();
+ if (nbfd == (bfd *)NULL)
return (bfd *)NULL;
- }
nbfd->filename = filename;
- if(template) {
- nbfd->xvec = template->xvec;
+ if(templ) {
+ nbfd->xvec = templ->xvec;
}
nbfd->direction = no_direction;
bfd_set_format(nbfd, bfd_object);
return nbfd;
}
-/* Memory allocation */
+/*
+INTERNAL_FUNCTION
+ bfd_alloc_by_size_t
-DEFUN(PTR bfd_alloc_by_size_t,(abfd, size),
- bfd *abfd AND
- size_t size)
-{
- PTR res = obstack_alloc(&(abfd->memory), size);
- return res;
-}
+SYNOPSIS
+ PTR bfd_alloc_by_size_t(bfd *abfd, size_t wanted);
-DEFUN(void bfd_alloc_grow,(abfd, ptr, size),
- bfd *abfd AND
- PTR ptr AND
- bfd_size_type size)
-{
- (void) obstack_grow(&(abfd->memory), ptr, size);
-}
-DEFUN(PTR bfd_alloc_finish,(abfd),
- bfd *abfd)
+DESCRIPTION
+ Allocate a block of @var{wanted} bytes of memory in the obstack
+ attatched to <<abfd>> and return a pointer to it.
+*/
+
+
+PTR
+bfd_alloc_by_size_t (abfd, size)
+ bfd *abfd;
+ size_t size;
{
- return obstack_finish(&(abfd->memory));
+ PTR ret;
+
+ ret = obstack_alloc (&(abfd->memory), size);
+ if (ret == NULL)
+ bfd_set_error (bfd_error_no_memory);
+ return ret;
}
-DEFUN(PTR bfd_alloc, (abfd, size),
- bfd *abfd AND
- bfd_size_type size)
+void
+bfd_alloc_grow (abfd, ptr, size)
+ bfd *abfd;
+ PTR ptr;
+ size_t size;
{
- return bfd_alloc_by_size_t(abfd, (size_t)size);
+ (void) obstack_grow(&(abfd->memory), ptr, size);
}
-DEFUN(PTR bfd_zalloc,(abfd, size),
- bfd *abfd AND
- bfd_size_type size)
+PTR
+bfd_alloc_finish (abfd)
+ bfd *abfd;
{
- PTR res = bfd_alloc(abfd, size);
- memset(res, 0, (size_t)size);
- return res;
+ PTR ret;
+
+ ret = obstack_finish (&(abfd->memory));
+ if (ret == NULL)
+ bfd_set_error (bfd_error_no_memory);
+ return ret;
}
-DEFUN(PTR bfd_realloc,(abfd, old, size),
- bfd *abfd AND
- PTR old AND
- bfd_size_type size)
+PTR
+bfd_alloc (abfd, size)
+ bfd *abfd;
+ size_t size;
{
- PTR res = bfd_alloc(abfd, size);
- memcpy(res, old, (size_t)size);
- return res;
+ return bfd_alloc_by_size_t(abfd, (size_t)size);
}
-/*proto* bfd_alloc_size
-Return the number of bytes in the obstacks connected to the supplied
-BFD.
-*; PROTO(bfd_size_type,bfd_alloc_size,(bfd *abfd));
-*/
-
-bfd_size_type
-DEFUN( bfd_alloc_size,(abfd),
- bfd *abfd)
+PTR
+bfd_zalloc (abfd, size)
+ bfd *abfd;
+ size_t size;
{
- struct _obstack_chunk *chunk = abfd->memory.chunk;
- size_t size = 0;
- while (chunk) {
- size += chunk->limit - &(chunk->contents[0]);
- chunk = chunk->prev;
- }
- return size;
+ PTR res;
+ res = bfd_alloc(abfd, size);
+ if (res)
+ memset(res, 0, (size_t)size);
+ return res;
}
projects / binutils.git / blobdiff