19990502 sourceware importbinu_ss_19990502

1 files changed, 2127 insertions, 0 deletions

diff --git a/bfd/archive.c b/bfd/archive.c
new file mode 100644
index 0000000..8ac5aa4
--- /dev/null
+++ b/bfd/archive.c
@@ -0,0 +1,2127 @@
+/* BFD back-end for archive files (libraries).
+   Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998
+   Free Software Foundation, Inc.
+   Written by Cygnus Support.  Mostly Gumby Henkel-Wallace's fault.
+
+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.  */
+
+/*
+@setfilename archive-info
+SECTION
+	Archives
+
+DESCRIPTION
+	An archive (or library) is just another BFD.  It has a symbol
+	table, although there's not much a user program will do with it.
+
+	The big difference between an archive BFD and an ordinary BFD
+	is that the archive doesn't have sections.  Instead it has a
+	chain of BFDs that are considered its contents.  These BFDs can
+	be manipulated like any other.  The BFDs contained in an
+	archive opened for reading will all be opened for reading.  You
+	may put either input or output BFDs into an archive opened for
+	output; they will be handled correctly when the archive is closed.
+
+	Use <<bfd_openr_next_archived_file>> to step through
+	the contents of an archive opened for input.  You don't
+	have to read the entire archive if you don't want
+	to!  Read it until you find what you want.
+
+	Archive contents of output BFDs are chained through the
+	<<next>> pointer in a BFD.  The first one is findable through
+	the <<archive_head>> slot of the archive.  Set it with
+	<<bfd_set_archive_head>> (q.v.).  A given BFD may be in only one
+	open output archive at a time.
+
+	As expected, the BFD archive code is more general than the
+	archive code of any given environment.  BFD archives may
+	contain files of different formats (e.g., a.out and coff) and
+	even different architectures.  You may even place archives
+	recursively into archives!
+
+	This can cause unexpected confusion, since some archive
+	formats are more expressive than others.  For instance, Intel
+	COFF archives can preserve long filenames; SunOS a.out archives
+	cannot.  If you move a file from the first to the second
+	format and back again, the filename may be truncated.
+	Likewise, different a.out environments have different
+	conventions as to how they truncate filenames, whether they
+	preserve directory names in filenames, etc.  When
+	interoperating with native tools, be sure your files are
+	homogeneous.
+
+	Beware: most of these formats do not react well to the
+	presence of spaces in filenames.  We do the best we can, but
+	can't always handle this case due to restrictions in the format of
+	archives.  Many Unix utilities are braindead in regards to
+	spaces and such in filenames anyway, so this shouldn't be much
+	of a restriction.
+
+	Archives are supported in BFD in <<archive.c>>.
+
+*/
+
+/* Assumes:
+   o - all archive elements start on an even boundary, newline padded;
+   o - all arch headers are char *;
+   o - all arch headers are the same size (across architectures).
+*/
+
+/* Some formats provide a way to cram a long filename into the short
+   (16 chars) space provided by a BSD archive.  The trick is: make a
+   special "file" in the front of the archive, sort of like the SYMDEF
+   entry.  If the filename is too long to fit, put it in the extended
+   name table, and use its index as the filename.  To prevent
+   confusion prepend the index with a space.  This means you can't
+   have filenames that start with a space, but then again, many Unix
+   utilities can't handle that anyway.
+
+   This scheme unfortunately requires that you stand on your head in
+   order to write an archive since you need to put a magic file at the
+   front, and need to touch every entry to do so.  C'est la vie.
+
+   We support two variants of this idea:
+   The SVR4 format (extended name table is named "//"),
+   and an extended pseudo-BSD variant (extended name table is named
+   "ARFILENAMES/").  The origin of the latter format is uncertain.
+
+   BSD 4.4 uses a third scheme:  It writes a long filename
+   directly after the header.  This allows 'ar q' to work.
+   We currently can read BSD 4.4 archives, but not write them.
+*/
+
+/* Summary of archive member names:
+
+ Symbol table (must be first):
+ "__.SYMDEF       " - Symbol table, Berkeley style, produced by ranlib.
+ "/               " - Symbol table, system 5 style.
+
+ Long name table (must be before regular file members):
+ "//              " - Long name table, System 5 R4 style.
+ "ARFILENAMES/    " - Long name table, non-standard extended BSD (not BSD 4.4).
+
+ Regular file members with short names:
+ "filename.o/     " - Regular file, System 5 style (embedded spaces ok).
+ "filename.o      " - Regular file, Berkeley style (no embedded spaces).
+
+ Regular files with long names (or embedded spaces, for BSD variants):
+ "/18             " - SVR4 style, name at offset 18 in name table.
+ "#1/23           " - Long name (or embedded paces) 23 characters long,
+		      BSD 4.4 style, full name follows header.
+		      Implemented for reading, not writing.
+ " 18             " - Long name 18 characters long, extended pseudo-BSD.
+ */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "aout/ar.h"
+#include "aout/ranlib.h"
+#include <ctype.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+#ifdef GNU960
+#define BFD_GNU960_ARMAG(abfd)	(BFD_COFF_FILE_P((abfd)) ? ARMAG : ARMAGB)
+#endif
+
+/* Define offsetof for those systems which lack it */
+
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
+#endif
+
+/* We keep a cache of archive filepointers to archive elements to
+   speed up searching the archive by filepos.  We only add an entry to
+   the cache when we actually read one.  We also don't sort the cache;
+   it's generally short enough to search linearly.
+   Note that the pointers here point to the front of the ar_hdr, not
+   to the front of the contents!
+*/
+struct ar_cache
+{
+  file_ptr ptr;
+  bfd *arelt;
+  struct ar_cache *next;
+};
+
+#define ar_padchar(abfd) ((abfd)->xvec->ar_pad_char)
+#define ar_maxnamelen(abfd) ((abfd)->xvec->ar_max_namelen)
+
+#define arch_eltdata(bfd) ((struct areltdata *)((bfd)->arelt_data))
+#define arch_hdr(bfd) ((struct ar_hdr *)arch_eltdata(bfd)->arch_header)
+
+static char *get_extended_arelt_filename PARAMS ((bfd *arch,
+						  const char *name));
+static boolean do_slurp_bsd_armap PARAMS ((bfd *abfd));
+static boolean do_slurp_coff_armap PARAMS ((bfd *abfd));
+static const char *normalize PARAMS ((bfd *, const char *file));
+static struct areltdata *bfd_ar_hdr_from_filesystem PARAMS ((bfd *abfd,
+							     const char *,
+							     bfd *member));
+
+boolean
+_bfd_generic_mkarchive (abfd)
+     bfd *abfd;
+{
+  abfd->tdata.aout_ar_data = ((struct artdata *)
+			      bfd_zalloc (abfd, sizeof (struct artdata)));
+
+  if (bfd_ardata (abfd) == NULL)
+    return false;
+
+  bfd_ardata (abfd)->cache = NULL;
+  bfd_ardata (abfd)->archive_head = NULL;
+  bfd_ardata (abfd)->symdefs = NULL;
+  bfd_ardata (abfd)->extended_names = NULL;
+  bfd_ardata (abfd)->tdata = NULL;
+
+  return true;
+}
+
+/*
+FUNCTION
+	bfd_get_next_mapent
+
+SYNOPSIS
+	symindex bfd_get_next_mapent(bfd *abfd, symindex previous, carsym **sym);
+
+DESCRIPTION
+	Step through archive @var{abfd}'s symbol table (if it
+	has one).  Successively update @var{sym} with the next symbol's
+	information, returning that symbol's (internal) index into the
+	symbol table.
+
+	Supply <<BFD_NO_MORE_SYMBOLS>> as the @var{previous} entry to get
+	the first one; returns <<BFD_NO_MORE_SYMBOLS>> when you've already
+	got the last one.
+
+	A <<carsym>> is a canonical archive symbol.  The only
+	user-visible element is its name, a null-terminated string.
+*/
+
+symindex
+bfd_get_next_mapent (abfd, prev, entry)
+     bfd *abfd;
+     symindex prev;
+     carsym **entry;
+{
+  if (!bfd_has_map (abfd))
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return BFD_NO_MORE_SYMBOLS;
+    }
+
+  if (prev == BFD_NO_MORE_SYMBOLS)
+    prev = 0;
+  else
+    ++prev;
+  if (prev >= bfd_ardata (abfd)->symdef_count)
+    return BFD_NO_MORE_SYMBOLS;
+
+  *entry = (bfd_ardata (abfd)->symdefs + prev);
+  return prev;
+}
+
+/* To be called by backends only */
+
+bfd *
+_bfd_create_empty_archive_element_shell (obfd)
+     bfd *obfd;
+{
+  return _bfd_new_bfd_contained_in (obfd);
+}
+
+/*
+FUNCTION
+	bfd_set_archive_head
+
+SYNOPSIS
+	boolean bfd_set_archive_head(bfd *output, bfd *new_head);
+
+DESCRIPTION
+	Set the head of the chain of
+	BFDs contained in the archive @var{output} to @var{new_head}.
+*/
+
+boolean
+bfd_set_archive_head (output_archive, new_head)
+     bfd *output_archive;
+     bfd *new_head;
+{
+
+  output_archive->archive_head = new_head;
+  return true;
+}
+
+bfd *
+_bfd_look_for_bfd_in_cache (arch_bfd, filepos)
+     bfd *arch_bfd;
+     file_ptr filepos;
+{
+  struct ar_cache *current;
+
+  for (current = bfd_ardata (arch_bfd)->cache; current != NULL;
+       current = current->next)
+    if (current->ptr == filepos)
+      return current->arelt;
+
+  return NULL;
+}
+
+/* Kind of stupid to call cons for each one, but we don't do too many */
+boolean
+_bfd_add_bfd_to_archive_cache (arch_bfd, filepos, new_elt)
+     bfd *arch_bfd, *new_elt;
+     file_ptr filepos;
+{
+  struct ar_cache *new_cache = ((struct ar_cache *)
+				bfd_zalloc (arch_bfd,
+					    sizeof (struct ar_cache)));
+
+  if (new_cache == NULL)
+    return false;
+
+  new_cache->ptr = filepos;
+  new_cache->arelt = new_elt;
+  new_cache->next = (struct ar_cache *) NULL;
+  if (bfd_ardata (arch_bfd)->cache == NULL)
+    bfd_ardata (arch_bfd)->cache = new_cache;
+  else
+    {
+      struct ar_cache *current = bfd_ardata (arch_bfd)->cache;
+
+      while (current->next != NULL)
+	current = current->next;
+      current->next = new_cache;
+    }
+
+  return true;
+}
+
+/* The name begins with space.  Hence the rest of the name is an index into
+   the string table. */
+
+static char *
+get_extended_arelt_filename (arch, name)
+     bfd *arch;
+     const char *name;
+{
+  unsigned long index = 0;
+
+  /* Should extract string so that I can guarantee not to overflow into
+     the next region, but I'm too lazy. */
+  errno = 0;
+  /* Skip first char, which is '/' in SVR4 or ' ' in some other variants. */
+  index = strtol (name + 1, NULL, 10);
+  if (errno != 0)
+    {
+      bfd_set_error (bfd_error_malformed_archive);
+      return NULL;
+    }
+
+  return bfd_ardata (arch)->extended_names + index;
+}
+
+/* This functions reads an arch header and returns an areltdata pointer, or
+   NULL on error.
+
+   Presumes the file pointer is already in the right place (ie pointing
+   to the ar_hdr in the file).   Moves the file pointer; on success it
+   should be pointing to the front of the file contents; on failure it
+   could have been moved arbitrarily.
+*/
+
+PTR
+_bfd_generic_read_ar_hdr (abfd)
+     bfd *abfd;
+{
+  return _bfd_generic_read_ar_hdr_mag (abfd, (const char *) NULL);
+}
+
+/* Alpha ECOFF uses an optional different ARFMAG value, so we have a
+   variant of _bfd_generic_read_ar_hdr which accepts a magic string.  */
+
+PTR
+_bfd_generic_read_ar_hdr_mag (abfd, mag)
+     bfd *abfd;
+     const char *mag;
+{
+  struct ar_hdr hdr;
+  char *hdrp = (char *) &hdr;
+  unsigned int parsed_size;
+  struct areltdata *ared;
+  char *filename = NULL;
+  unsigned int namelen = 0;
+  unsigned int allocsize = sizeof (struct areltdata) + sizeof (struct ar_hdr);
+  char *allocptr = 0;
+
+  if (bfd_read ((PTR) hdrp, 1, sizeof (struct ar_hdr), abfd)
+      != sizeof (struct ar_hdr))
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_no_more_archived_files);
+      return NULL;
+    }
+  if (strncmp (hdr.ar_fmag, ARFMAG, 2) != 0
+      && (mag == NULL
+	  || strncmp (hdr.ar_fmag, mag, 2) != 0))
+    {
+      bfd_set_error (bfd_error_malformed_archive);
+      return NULL;
+    }
+
+  errno = 0;
+  parsed_size = strtol (hdr.ar_size, NULL, 10);
+  if (errno != 0)
+    {
+      bfd_set_error (bfd_error_malformed_archive);
+      return NULL;
+    }
+
+  /* Extract the filename from the archive - there are two ways to
+     specify an extended name table, either the first char of the
+     name is a space, or it's a slash.  */
+  if ((hdr.ar_name[0] == '/'
+       || (hdr.ar_name[0] == ' '
+	   && memchr (hdr.ar_name, '/', ar_maxnamelen (abfd)) == NULL))
+      && bfd_ardata (abfd)->extended_names != NULL)
+    {
+      filename = get_extended_arelt_filename (abfd, hdr.ar_name);
+      if (filename == NULL)
+	{
+	  bfd_set_error (bfd_error_malformed_archive);
+	  return NULL;
+	}
+    }
+  /* BSD4.4-style long filename.
+     Only implemented for reading, so far! */
+  else if (hdr.ar_name[0] == '#'
+	   && hdr.ar_name[1] == '1'
+	   && hdr.ar_name[2] == '/'
+	   && isdigit ((unsigned char) hdr.ar_name[3]))
+    {
+      /* BSD-4.4 extended name */
+      namelen = atoi (&hdr.ar_name[3]);
+      allocsize += namelen + 1;
+      parsed_size -= namelen;
+
+      allocptr = bfd_zalloc (abfd, allocsize);
+      if (allocptr == NULL)
+	return NULL;
+      filename = (allocptr
+		  + sizeof (struct areltdata)
+		  + sizeof (struct ar_hdr));
+      if (bfd_read (filename, 1, namelen, abfd) != namelen)
+	{
+	  if (bfd_get_error () != bfd_error_system_call)
+	    bfd_set_error (bfd_error_no_more_archived_files);
+	  return NULL;
+	}
+      filename[namelen] = '\0';
+    }
+  else
+    {
+      /* We judge the end of the name by looking for '/' or ' '.
+	 Note:  The SYSV format (terminated by '/') allows embedded
+	 spaces, so only look for ' ' if we don't find '/'. */
+
+      char *e;
+      e = memchr (hdr.ar_name, '\0', ar_maxnamelen (abfd));
+      if (e == NULL)
+	{
+          e = memchr (hdr.ar_name, '/', ar_maxnamelen (abfd));
+	  if (e == NULL)
+            e = memchr (hdr.ar_name, ' ', ar_maxnamelen (abfd));
+	}
+
+      if (e != NULL)
+	namelen = e - hdr.ar_name;
+      else
+	{
+	  /* If we didn't find a termination character, then the name
+	     must be the entire field.  */
+	  namelen = ar_maxnamelen (abfd);
+	}
+
+      allocsize += namelen + 1;
+    }
+
+  if (!allocptr)
+    {
+      allocptr = bfd_zalloc (abfd, allocsize);
+      if (allocptr == NULL)
+	return NULL;
+    }
+
+  ared = (struct areltdata *) allocptr;
+
+  ared->arch_header = allocptr + sizeof (struct areltdata);
+  memcpy ((char *) ared->arch_header, (char *) &hdr, sizeof (struct ar_hdr));
+  ared->parsed_size = parsed_size;
+
+  if (filename != NULL)
+    ared->filename = filename;
+  else
+    {
+      ared->filename = allocptr + (sizeof (struct areltdata) +
+				   sizeof (struct ar_hdr));
+      if (namelen)
+	memcpy (ared->filename, hdr.ar_name, namelen);
+      ared->filename[namelen] = '\0';
+    }
+
+  return (PTR) ared;
+}
+
+/* This is an internal function; it's mainly used when indexing
+   through the archive symbol table, but also used to get the next
+   element, since it handles the bookkeeping so nicely for us.  */
+
+bfd *
+_bfd_get_elt_at_filepos (archive, filepos)
+     bfd *archive;
+     file_ptr filepos;
+{
+  struct areltdata *new_areldata;
+  bfd *n_nfd;
+
+  n_nfd = _bfd_look_for_bfd_in_cache (archive, filepos);
+  if (n_nfd)
+    return n_nfd;
+
+  if (0 > bfd_seek (archive, filepos, SEEK_SET))
+    return NULL;
+
+  if ((new_areldata = (struct areltdata *) _bfd_read_ar_hdr (archive)) == NULL)
+    return NULL;
+
+  n_nfd = _bfd_create_empty_archive_element_shell (archive);
+  if (n_nfd == NULL)
+    {
+      bfd_release (archive, (PTR) new_areldata);
+      return NULL;
+    }
+
+  n_nfd->origin = bfd_tell (archive);
+  n_nfd->arelt_data = (PTR) new_areldata;
+  n_nfd->filename = new_areldata->filename;
+
+  if (_bfd_add_bfd_to_archive_cache (archive, filepos, n_nfd))
+    return n_nfd;
+
+  /* huh? */
+  bfd_release (archive, (PTR) n_nfd);
+  bfd_release (archive, (PTR) new_areldata);
+  return NULL;
+}
+
+/* Return the BFD which is referenced by the symbol in ABFD indexed by
+   INDEX.  INDEX should have been returned by bfd_get_next_mapent.  */
+
+bfd *
+_bfd_generic_get_elt_at_index (abfd, index)
+     bfd *abfd;
+     symindex index;
+{
+  carsym *entry;
+
+  entry = bfd_ardata (abfd)->symdefs + index;
+  return _bfd_get_elt_at_filepos (abfd, entry->file_offset);
+}
+
+/*
+FUNCTION
+	bfd_openr_next_archived_file
+
+SYNOPSIS
+	bfd *bfd_openr_next_archived_file(bfd *archive, bfd *previous);
+
+DESCRIPTION
+	Provided a BFD, @var{archive}, containing an archive and NULL, open
+	an input BFD on the first contained element and returns that.
+	Subsequent calls should pass
+	the archive and the previous return value to return a created
+	BFD to the next contained element. NULL is returned when there
+	are no more.
+
+*/
+
+bfd *
+bfd_openr_next_archived_file (archive, last_file)
+     bfd *archive;
+     bfd *last_file;
+{
+  if ((bfd_get_format (archive) != bfd_archive) ||
+      (archive->direction == write_direction))
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return NULL;
+    }
+
+  return BFD_SEND (archive,
+		   openr_next_archived_file,
+		   (archive,
+		    last_file));
+}
+
+bfd *
+bfd_generic_openr_next_archived_file (archive, last_file)
+     bfd *archive;
+     bfd *last_file;
+{
+  file_ptr filestart;
+
+  if (!last_file)
+    filestart = bfd_ardata (archive)->first_file_filepos;
+  else
+    {
+      unsigned int size = arelt_size (last_file);
+      /* Pad to an even boundary...
+	 Note that last_file->origin can be odd in the case of
+	 BSD-4.4-style element with a long odd size. */
+      filestart = last_file->origin + size;
+      filestart += filestart % 2;
+    }
+
+  return _bfd_get_elt_at_filepos (archive, filestart);
+}
+
+
+const bfd_target *
+bfd_generic_archive_p (abfd)
+     bfd *abfd;
+{
+  struct artdata *tdata_hold;
+  char armag[SARMAG + 1];
+
+  tdata_hold = abfd->tdata.aout_ar_data;
+
+  if (bfd_read ((PTR) armag, 1, SARMAG, abfd) != SARMAG)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+#ifdef GNU960
+  if (strncmp (armag, BFD_GNU960_ARMAG (abfd), SARMAG) != 0)
+    return 0;
+#else
+  if (strncmp (armag, ARMAG, SARMAG) != 0 &&
+      strncmp (armag, ARMAGB, SARMAG) != 0)
+    return 0;
+#endif
+
+  /* We are setting bfd_ardata(abfd) here, but since bfd_ardata
+     involves a cast, we can't do it as the left operand of assignment. */
+  abfd->tdata.aout_ar_data = ((struct artdata *)
+			      bfd_zalloc (abfd, sizeof (struct artdata)));
+
+  if (bfd_ardata (abfd) == NULL)
+    return NULL;
+
+  bfd_ardata (abfd)->first_file_filepos = SARMAG;
+  bfd_ardata (abfd)->cache = NULL;
+  bfd_ardata (abfd)->archive_head = NULL;
+  bfd_ardata (abfd)->symdefs = NULL;
+  bfd_ardata (abfd)->extended_names = NULL;
+  bfd_ardata (abfd)->tdata = NULL;
+
+  if (!BFD_SEND (abfd, _bfd_slurp_armap, (abfd)))
+    {
+      bfd_release (abfd, bfd_ardata (abfd));
+      abfd->tdata.aout_ar_data = tdata_hold;
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+  if (!BFD_SEND (abfd, _bfd_slurp_extended_name_table, (abfd)))
+    {
+      bfd_release (abfd, bfd_ardata (abfd));
+      abfd->tdata.aout_ar_data = tdata_hold;
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+  if (bfd_has_map (abfd))
+    {
+      bfd *first;
+
+      /* This archive has a map, so we may presume that the contents
+	 are object files.  Make sure that if the first file in the
+	 archive can be recognized as an object file, it is for this
+	 target.  If not, assume that this is the wrong format.  If
+	 the first file is not an object file, somebody is doing
+	 something weird, and we permit it so that ar -t will work.
+
+	 This is done because any normal format will recognize any
+	 normal archive, regardless of the format of the object files.
+	 We do accept an empty archive.  */
+
+      first = bfd_openr_next_archived_file (abfd, (bfd *) NULL);
+      if (first != NULL)
+	{
+	  boolean fail;
+
+	  first->target_defaulted = false;
+	  fail = false;
+	  if (bfd_check_format (first, bfd_object)
+	      && first->xvec != abfd->xvec)
+	    {
+	      (void) bfd_close (first);
+	      bfd_release (abfd, bfd_ardata (abfd));
+	      abfd->tdata.aout_ar_data = tdata_hold;
+	      bfd_set_error (bfd_error_wrong_format);
+	      return NULL;
+	    }
+
+	  /* We ought to close first here, but we can't, because we
+             have no way to remove it from the archive cache.  FIXME.  */
+	}
+    }
+
+  return abfd->xvec;
+}
+
+/* Some constants for a 32 bit BSD archive structure.  We do not
+   support 64 bit archives presently; so far as I know, none actually
+   exist.  Supporting them would require changing these constants, and
+   changing some bfd_h_get_32 to bfd_h_get_64.  */
+
+/* The size of an external symdef structure.  */
+#define BSD_SYMDEF_SIZE 8
+
+/* The offset from the start of a symdef structure to the file offset.  */
+#define BSD_SYMDEF_OFFSET_SIZE 4
+
+/* The size of the symdef count.  */
+#define BSD_SYMDEF_COUNT_SIZE 4
+
+/* The size of the string count.  */
+#define BSD_STRING_COUNT_SIZE 4
+
+/* Returns false on error, true otherwise */
+
+static boolean
+do_slurp_bsd_armap (abfd)
+     bfd *abfd;
+{
+  struct areltdata *mapdata;
+  unsigned int counter;
+  bfd_byte *raw_armap, *rbase;
+  struct artdata *ardata = bfd_ardata (abfd);
+  char *stringbase;
+  unsigned int parsed_size;
+  carsym *set;
+
+  mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
+  if (mapdata == NULL)
+    return false;
+  parsed_size = mapdata->parsed_size;
+  bfd_release (abfd, (PTR) mapdata);	/* Don't need it any more. */
+
+  raw_armap = (bfd_byte *) bfd_zalloc (abfd, parsed_size);
+  if (raw_armap == (bfd_byte *) NULL)
+    return false;
+
+  if (bfd_read ((PTR) raw_armap, 1, parsed_size, abfd) != parsed_size)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_malformed_archive);
+    byebye:
+      bfd_release (abfd, (PTR) raw_armap);
+      return false;
+    }
+
+  ardata->symdef_count = bfd_h_get_32 (abfd, raw_armap) / BSD_SYMDEF_SIZE;
+
+  if (ardata->symdef_count * BSD_SYMDEF_SIZE >
+      parsed_size - BSD_SYMDEF_COUNT_SIZE)
+    {
+      /* Probably we're using the wrong byte ordering.  */
+      bfd_set_error (bfd_error_wrong_format);
+      goto byebye;
+    }
+
+  ardata->cache = 0;
+  rbase = raw_armap + BSD_SYMDEF_COUNT_SIZE;
+  stringbase = ((char *) rbase
+		+ ardata->symdef_count * BSD_SYMDEF_SIZE
+		+ BSD_STRING_COUNT_SIZE);
+  ardata->symdefs = (carsym *) bfd_alloc (abfd,
+					  (ardata->symdef_count
+					   * sizeof (carsym)));
+  if (!ardata->symdefs)
+    return false;
+
+  for (counter = 0, set = ardata->symdefs;
+       counter < ardata->symdef_count;
+       counter++, set++, rbase += BSD_SYMDEF_SIZE)
+    {
+      set->name = bfd_h_get_32 (abfd, rbase) + stringbase;
+      set->file_offset = bfd_h_get_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE);
+    }
+
+  ardata->first_file_filepos = bfd_tell (abfd);
+  /* Pad to an even boundary if you have to */
+  ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
+  /* FIXME, we should provide some way to free raw_ardata when
+     we are done using the strings from it.  For now, it seems
+     to be allocated on an objalloc anyway... */
+  bfd_has_map (abfd) = true;
+  return true;
+}
+
+/* Returns false on error, true otherwise */
+static boolean
+do_slurp_coff_armap (abfd)
+     bfd *abfd;
+{
+  struct areltdata *mapdata;
+  int *raw_armap, *rawptr;
+  struct artdata *ardata = bfd_ardata (abfd);
+  char *stringbase;
+  unsigned int stringsize;
+  unsigned int parsed_size;
+  carsym *carsyms;
+  unsigned int nsymz;		/* Number of symbols in armap. */
+  bfd_vma (*swap) PARAMS ((const bfd_byte *));
+  char int_buf[sizeof (long)];
+  unsigned int carsym_size, ptrsize, i;
+
+  mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
+  if (mapdata == NULL)
+    return false;
+  parsed_size = mapdata->parsed_size;
+  bfd_release (abfd, (PTR) mapdata);	/* Don't need it any more. */
+
+  if (bfd_read ((PTR) int_buf, 1, 4, abfd) != 4)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_malformed_archive);
+      return false;
+    }
+  /* It seems that all numeric information in a coff archive is always
+     in big endian format, nomatter the host or target. */
+  swap = bfd_getb32;
+  nsymz = bfd_getb32 ((PTR) int_buf);
+  stringsize = parsed_size - (4 * nsymz) - 4;
+
+#if 1
+  /* ... except that some archive formats are broken, and it may be our
+     fault - the i960 little endian coff sometimes has big and sometimes
+     little, because our tools changed.  Here's a horrible hack to clean
+     up the crap.  */
+
+  if (stringsize > 0xfffff
+      && bfd_get_arch (abfd) == bfd_arch_i960
+      && bfd_get_flavour (abfd) == bfd_target_coff_flavour)
+    {
+      /* This looks dangerous, let's do it the other way around */
+      nsymz = bfd_getl32 ((PTR) int_buf);
+      stringsize = parsed_size - (4 * nsymz) - 4;
+      swap = bfd_getl32;
+    }
+#endif
+
+  /* The coff armap must be read sequentially.  So we construct a
+     bsd-style one in core all at once, for simplicity. */
+
+  carsym_size = (nsymz * sizeof (carsym));
+  ptrsize = (4 * nsymz);
+
+  ardata->symdefs = (carsym *) bfd_zalloc (abfd, carsym_size + stringsize + 1);
+  if (ardata->symdefs == NULL)
+    return false;
+  carsyms = ardata->symdefs;
+  stringbase = ((char *) ardata->symdefs) + carsym_size;
+
+  /* Allocate and read in the raw offsets. */
+  raw_armap = (int *) bfd_alloc (abfd, ptrsize);
+  if (raw_armap == NULL)
+    goto release_symdefs;
+  if (bfd_read ((PTR) raw_armap, 1, ptrsize, abfd) != ptrsize
+      || bfd_read ((PTR) stringbase, 1, stringsize, abfd) != stringsize)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_malformed_archive);
+      goto release_raw_armap;
+    }
+
+  /* OK, build the carsyms */
+  for (i = 0; i < nsymz; i++)
+    {
+      rawptr = raw_armap + i;
+      carsyms->file_offset = swap ((PTR) rawptr);
+      carsyms->name = stringbase;
+      stringbase += strlen (stringbase) + 1;
+      carsyms++;
+    }
+  *stringbase = 0;
+
+  ardata->symdef_count = nsymz;
+  ardata->first_file_filepos = bfd_tell (abfd);
+  /* Pad to an even boundary if you have to */
+  ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
+
+
+  bfd_has_map (abfd) = true;
+  bfd_release (abfd, (PTR) raw_armap);
+
+
+  /* Check for a second archive header (as used by PE) */
+  {
+    struct areltdata *tmp;
+
+    bfd_seek (abfd,   ardata->first_file_filepos, SEEK_SET);
+    tmp = (struct areltdata *) _bfd_read_ar_hdr (abfd);
+    if (tmp != NULL) 
+      {
+	if (tmp->arch_header[0] == '/'
+	    && tmp->arch_header[1] == ' ') 
+	  {
+	    ardata->first_file_filepos +=
+	      (tmp->parsed_size + sizeof(struct ar_hdr) + 1) & ~1;
+	  }
+	bfd_release (abfd, tmp);
+      }
+  }
+
+  return true;
+
+release_raw_armap:
+  bfd_release (abfd, (PTR) raw_armap);
+release_symdefs:
+  bfd_release (abfd, (PTR) (ardata)->symdefs);
+  return false;
+}
+
+/* This routine can handle either coff-style or bsd-style armaps.
+   Returns false on error, true otherwise */
+
+boolean
+bfd_slurp_armap (abfd)
+     bfd *abfd;
+{
+  char nextname[17];
+  int i = bfd_read ((PTR) nextname, 1, 16, abfd);
+
+  if (i == 0)
+    return true;
+  if (i != 16)
+    return false;
+
+  if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
+    return false;
+
+  if (!strncmp (nextname, "__.SYMDEF       ", 16)
+      || !strncmp (nextname, "__.SYMDEF/      ", 16)) /* old Linux archives */
+    return do_slurp_bsd_armap (abfd);
+  else if (!strncmp (nextname, "/               ", 16))
+    return do_slurp_coff_armap (abfd);
+  else if (!strncmp (nextname, "/SYM64/         ", 16))
+    {
+      /* Irix 6 archive--must be recognized by code in elf64-mips.c.  */
+      bfd_set_error (bfd_error_wrong_format);
+      return false;
+    }
+
+  bfd_has_map (abfd) = false;
+  return true;
+}
+
+/* Returns false on error, true otherwise */
+/* flavor 2 of a bsd armap, similar to bfd_slurp_bsd_armap except the
+   header is in a slightly different order and the map name is '/'.
+   This flavour is used by hp300hpux. */
+
+#define HPUX_SYMDEF_COUNT_SIZE 2
+
+boolean
+bfd_slurp_bsd_armap_f2 (abfd)
+     bfd *abfd;
+{
+  struct areltdata *mapdata;
+  char nextname[17];
+  unsigned int counter;
+  bfd_byte *raw_armap, *rbase;
+  struct artdata *ardata = bfd_ardata (abfd);
+  char *stringbase;
+  unsigned int stringsize;
+  carsym *set;
+  int i = bfd_read ((PTR) nextname, 1, 16, abfd);
+
+  if (i == 0)
+    return true;
+  if (i != 16)
+    return false;
+
+  /* The archive has at least 16 bytes in it */
+  if (bfd_seek (abfd, -16L, SEEK_CUR) != 0)
+    return false;
+
+  if (!strncmp (nextname, "__.SYMDEF       ", 16)
+      || !strncmp (nextname, "__.SYMDEF/      ", 16)) /* old Linux archives */
+    return do_slurp_bsd_armap (abfd);
+
+  if (strncmp (nextname, "/               ", 16))
+    {
+      bfd_has_map (abfd) = false;
+      return true;
+    }
+
+  mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
+  if (mapdata == NULL)
+    return false;
+
+  raw_armap = (bfd_byte *) bfd_zalloc (abfd, mapdata->parsed_size);
+  if (raw_armap == NULL)
+    {
+    byebye:
+      bfd_release (abfd, (PTR) mapdata);
+      return false;
+    }
+
+  if (bfd_read ((PTR) raw_armap, 1, mapdata->parsed_size, abfd) !=
+      mapdata->parsed_size)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_malformed_archive);
+    byebyebye:
+      bfd_release (abfd, (PTR) raw_armap);
+      goto byebye;
+    }
+
+  ardata->symdef_count = bfd_h_get_16 (abfd, (PTR) raw_armap);
+
+  if (ardata->symdef_count * BSD_SYMDEF_SIZE
+      > mapdata->parsed_size - HPUX_SYMDEF_COUNT_SIZE)
+    {
+      /* Probably we're using the wrong byte ordering.  */
+      bfd_set_error (bfd_error_wrong_format);
+      goto byebyebye;
+    }
+
+  ardata->cache = 0;
+
+  stringsize = bfd_h_get_32 (abfd, raw_armap + HPUX_SYMDEF_COUNT_SIZE);
+  /* skip sym count and string sz */
+  stringbase = ((char *) raw_armap
+		+ HPUX_SYMDEF_COUNT_SIZE
+		+ BSD_STRING_COUNT_SIZE);
+  rbase = (bfd_byte *) stringbase + stringsize;
+  ardata->symdefs = (carsym *) bfd_alloc (abfd,
+					  (ardata->symdef_count
+					   * BSD_SYMDEF_SIZE));
+  if (!ardata->symdefs)
+    return false;
+
+  for (counter = 0, set = ardata->symdefs;
+       counter < ardata->symdef_count;
+       counter++, set++, rbase += BSD_SYMDEF_SIZE)
+    {
+      set->name = bfd_h_get_32 (abfd, rbase) + stringbase;
+      set->file_offset = bfd_h_get_32 (abfd, rbase + BSD_SYMDEF_OFFSET_SIZE);
+    }
+
+  ardata->first_file_filepos = bfd_tell (abfd);
+  /* Pad to an even boundary if you have to */
+  ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
+  /* FIXME, we should provide some way to free raw_ardata when
+     we are done using the strings from it.  For now, it seems
+     to be allocated on an objalloc anyway... */
+  bfd_has_map (abfd) = true;
+  return true;
+}
+
+/** Extended name table.
+
+  Normally archives support only 14-character filenames.
+
+  Intel has extended the format: longer names are stored in a special
+  element (the first in the archive, or second if there is an armap);
+  the name in the ar_hdr is replaced by <space><index into filename
+  element>.  Index is the P.R. of an int (decimal).  Data General have
+  extended the format by using the prefix // for the special element */
+
+/* Returns false on error, true otherwise */
+boolean
+_bfd_slurp_extended_name_table (abfd)
+     bfd *abfd;
+{
+  char nextname[17];
+  struct areltdata *namedata;
+
+  /* FIXME:  Formatting sucks here, and in case of failure of BFD_READ,
+     we probably don't want to return true.  */
+  bfd_seek (abfd, bfd_ardata (abfd)->first_file_filepos, SEEK_SET);
+  if (bfd_read ((PTR) nextname, 1, 16, abfd) == 16)
+    {
+      if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
+	return false;
+
+      if (strncmp (nextname, "ARFILENAMES/    ", 16) != 0 &&
+	  strncmp (nextname, "//              ", 16) != 0)
+	{
+	  bfd_ardata (abfd)->extended_names = NULL;
+	  return true;
+	}
+
+      namedata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
+      if (namedata == NULL)
+	return false;
+
+      bfd_ardata (abfd)->extended_names =
+	bfd_zalloc (abfd, namedata->parsed_size);
+      if (bfd_ardata (abfd)->extended_names == NULL)
+	{
+	byebye:
+	  bfd_release (abfd, (PTR) namedata);
+	  return false;
+	}
+
+      if (bfd_read ((PTR) bfd_ardata (abfd)->extended_names, 1,
+		    namedata->parsed_size, abfd) != namedata->parsed_size)
+	{
+	  if (bfd_get_error () != bfd_error_system_call)
+	    bfd_set_error (bfd_error_malformed_archive);
+	  bfd_release (abfd, (PTR) (bfd_ardata (abfd)->extended_names));
+	  bfd_ardata (abfd)->extended_names = NULL;
+	  goto byebye;
+	}
+
+      /* Since the archive is supposed to be printable if it contains
+	 text, the entries in the list are newline-padded, not null
+	 padded. In SVR4-style archives, the names also have a
+	 trailing '/'.  DOS/NT created archive often have \ in them
+	 We'll fix all problems here..  */
+      {
+	char *temp = bfd_ardata (abfd)->extended_names;
+	char *limit = temp + namedata->parsed_size;
+	for (; temp < limit; ++temp) {
+	  if (*temp == '\012')
+	    temp[temp[-1] == '/' ? -1 : 0] = '\0';
+	  if (*temp == '\\')
+	    *temp = '/';
+	}
+      }
+
+      /* Pad to an even boundary if you have to */
+      bfd_ardata (abfd)->first_file_filepos = bfd_tell (abfd);
+      bfd_ardata (abfd)->first_file_filepos +=
+	(bfd_ardata (abfd)->first_file_filepos) % 2;
+
+      /* FIXME, we can't release namedata here because it was allocated
+	 below extended_names on the objalloc... */
+      /* bfd_release (abfd, namedata); */
+    }
+  return true;
+}
+
+#ifdef VMS
+
+/* Return a copy of the stuff in the filename between any :]> and a
+   semicolon */
+static const char *
+normalize (abfd, file)
+     bfd *abfd;
+     const char *file;
+{
+  CONST char *first;
+  CONST char *last;
+  char *copy;
+
+  first = file + strlen (file) - 1;
+  last = first + 1;
+
+  while (first != file)
+    {
+      if (*first == ';')
+	last = first;
+      if (*first == ':' || *first == ']' || *first == '>')
+	{
+	  first++;
+	  break;
+	}
+      first--;
+    }
+
+  copy = (char *) bfd_alloc (abfd, last - first + 1);
+  if (copy == NULL)
+    return NULL;
+
+  memcpy (copy, first, last - first);
+  copy[last - first] = 0;
+
+  return copy;
+}
+
+#else
+static const char *
+normalize (abfd, file)
+     bfd *abfd;
+     const char *file;
+{
+  const char *filename = strrchr (file, '/');
+
+  if (filename != (char *) NULL)
+    filename++;
+  else
+    filename = file;
+  return filename;
+}
+#endif
+
+/* Build a BFD style extended name table.  */
+
+boolean
+_bfd_archive_bsd_construct_extended_name_table (abfd, tabloc, tablen, name)
+     bfd *abfd;
+     char **tabloc;
+     bfd_size_type *tablen;
+     const char **name;
+{
+  *name = "ARFILENAMES/";
+  return _bfd_construct_extended_name_table (abfd, false, tabloc, tablen);
+}
+
+/* Build an SVR4 style extended name table.  */
+
+boolean
+_bfd_archive_coff_construct_extended_name_table (abfd, tabloc, tablen, name)
+     bfd *abfd;
+     char **tabloc;
+     bfd_size_type *tablen;
+     const char **name;
+{
+  *name = "//";
+  return _bfd_construct_extended_name_table (abfd, true, tabloc, tablen);
+}
+
+/* Follows archive_head and produces an extended name table if
+   necessary.  Returns (in tabloc) a pointer to an extended name
+   table, and in tablen the length of the table.  If it makes an entry
+   it clobbers the filename so that the element may be written without
+   further massage.  Returns true if it ran successfully, false if
+   something went wrong.  A successful return may still involve a
+   zero-length tablen!  */
+
+boolean
+_bfd_construct_extended_name_table (abfd, trailing_slash, tabloc, tablen)
+     bfd *abfd;
+     boolean trailing_slash;
+     char **tabloc;
+     bfd_size_type *tablen;
+{
+  unsigned int maxname = abfd->xvec->ar_max_namelen;
+  unsigned int total_namelen = 0;
+  bfd *current;
+  char *strptr;
+
+  *tablen = 0;
+
+  /* Figure out how long the table should be */
+  for (current = abfd->archive_head; current != NULL; current = current->next)
+    {
+      const char *normal;
+      unsigned int thislen;
+
+      normal = normalize (current, current->filename);
+      if (normal == NULL)
+	return false;
+
+      thislen = strlen (normal);
+
+      if (thislen > maxname
+	  && (bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0)
+	thislen = maxname;
+
+      if (thislen > maxname)
+	{
+	  /* Add one to leave room for \n.  */
+	  total_namelen += thislen + 1;
+	  if (trailing_slash)
+	    {
+	      /* Leave room for trailing slash.  */
+	      ++total_namelen;
+	    }
+	}
+      else
+	{
+	  struct ar_hdr *hdr = arch_hdr (current);
+	  if (strncmp (normal, hdr->ar_name, thislen) != 0
+	      || (thislen < sizeof hdr->ar_name
+		  && hdr->ar_name[thislen] != ar_padchar (current)))
+	    {
+	      /* Must have been using extended format even though it
+	         didn't need to.  Fix it to use normal format.  */
+	      memcpy (hdr->ar_name, normal, thislen);
+	      if (thislen < maxname
+		  || (thislen == maxname && thislen < sizeof hdr->ar_name))
+		hdr->ar_name[thislen] = ar_padchar (current);
+	    }
+	}
+    }
+
+  if (total_namelen == 0)
+    return true;
+
+  *tabloc = bfd_zalloc (abfd, total_namelen);
+  if (*tabloc == NULL)
+    return false;
+
+  *tablen = total_namelen;
+  strptr = *tabloc;
+
+  for (current = abfd->archive_head; current != NULL; current =
+       current->next)
+    {
+      const char *normal;
+      unsigned int thislen;
+
+      normal = normalize (current, current->filename);
+      if (normal == NULL)
+	return false;
+
+      thislen = strlen (normal);
+      if (thislen > maxname)
+	{
+	  /* Works for now; may need to be re-engineered if we
+	     encounter an oddball archive format and want to
+	     generalise this hack. */
+	  struct ar_hdr *hdr = arch_hdr (current);
+	  strcpy (strptr, normal);
+	  if (! trailing_slash)
+	    strptr[thislen] = '\012';
+	  else
+	    {
+	      strptr[thislen] = '/';
+	      strptr[thislen + 1] = '\012';
+	    }
+	  hdr->ar_name[0] = ar_padchar (current);
+	  /* We know there will always be enough room (one of the few
+	     cases where you may safely use sprintf). */
+	  sprintf ((hdr->ar_name) + 1, "%-d", (unsigned) (strptr - *tabloc));
+	  /* Kinda Kludgy.  We should just use the returned value of
+	     sprintf but not all implementations get this right */
+	  {
+	    char *temp = hdr->ar_name + 2;
+	    for (; temp < hdr->ar_name + maxname; temp++)
+	      if (*temp == '\0')
+		*temp = ' ';
+	  }
+	  strptr += thislen + 1;
+	  if (trailing_slash)
+	    ++strptr;
+	}
+    }
+
+  return true;
+}
+
+/** A couple of functions for creating ar_hdrs */
+
+/* Takes a filename, returns an arelt_data for it, or NULL if it can't
+   make one.  The filename must refer to a filename in the filesystem.
+   The filename field of the ar_hdr will NOT be initialized.  If member
+   is set, and it's an in-memory bfd, we fake it. */
+
+static struct areltdata *
+bfd_ar_hdr_from_filesystem (abfd, filename, member)
+     bfd *abfd;
+     const char *filename;
+     bfd *member;
+{
+  struct stat status;
+  struct areltdata *ared;
+  struct ar_hdr *hdr;
+  char *temp, *temp1;
+
+  if (member && (member->flags & BFD_IN_MEMORY) != 0)
+    {
+      /* Assume we just "made" the member, and fake it */
+      struct bfd_in_memory *bim = (struct bfd_in_memory *) member->iostream;
+      time(&status.st_mtime);
+      status.st_uid = getuid();
+      status.st_gid = getgid();
+      status.st_mode = 0644;
+      status.st_size = bim->size;
+    }
+  else if (stat (filename, &status) != 0)
+    {
+      bfd_set_error (bfd_error_system_call);
+      return NULL;
+    }
+
+  ared = (struct areltdata *) bfd_zalloc (abfd, sizeof (struct ar_hdr) +
+					  sizeof (struct areltdata));
+  if (ared == NULL)
+    return NULL;
+  hdr = (struct ar_hdr *) (((char *) ared) + sizeof (struct areltdata));
+
+  /* ar headers are space padded, not null padded! */
+  memset ((PTR) hdr, ' ', sizeof (struct ar_hdr));
+
+  strncpy (hdr->ar_fmag, ARFMAG, 2);
+
+  /* Goddamned sprintf doesn't permit MAXIMUM field lengths */
+  sprintf ((hdr->ar_date), "%-12ld", (long) status.st_mtime);
+  sprintf ((hdr->ar_uid), "%ld", (long) status.st_uid);
+  sprintf ((hdr->ar_gid), "%ld", (long) status.st_gid);
+  sprintf ((hdr->ar_mode), "%-8o", (unsigned int) status.st_mode);
+  sprintf ((hdr->ar_size), "%-10ld", (long) status.st_size);
+  /* Correct for a lossage in sprintf whereby it null-terminates.  I cannot
+     understand how these C losers could design such a ramshackle bunch of
+     IO operations */
+  temp = (char *) hdr;
+  temp1 = temp + sizeof (struct ar_hdr) - 2;
+  for (; temp < temp1; temp++)
+    {
+      if (*temp == '\0')
+	*temp = ' ';
+    }
+  strncpy (hdr->ar_fmag, ARFMAG, 2);
+  ared->parsed_size = status.st_size;
+  ared->arch_header = (char *) hdr;
+
+  return ared;
+}
+
+/* This is magic required by the "ar" program.  Since it's
+    undocumented, it's undocumented.  You may think that it would take
+    a strong stomach to write this, and it does, but it takes even a
+    stronger stomach to try to code around such a thing!  */
+
+struct ar_hdr *bfd_special_undocumented_glue PARAMS ((bfd *, const char *));
+
+struct ar_hdr *
+bfd_special_undocumented_glue (abfd, filename)
+     bfd *abfd;
+     const char *filename;
+{
+  struct areltdata *ar_elt = bfd_ar_hdr_from_filesystem (abfd, filename, 0);
+  if (ar_elt == NULL)
+    return NULL;
+  return (struct ar_hdr *) ar_elt->arch_header;
+}
+
+
+/* Analogous to stat call */
+int
+bfd_generic_stat_arch_elt (abfd, buf)
+     bfd *abfd;
+     struct stat *buf;
+{
+  struct ar_hdr *hdr;
+  char *aloser;
+
+  if (abfd->arelt_data == NULL)
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return -1;
+    }
+
+  hdr = arch_hdr (abfd);
+
+#define foo(arelt, stelt, size)  \
+  buf->stelt = strtol (hdr->arelt, &aloser, size); \
+  if (aloser == hdr->arelt) return -1;
+
+  foo (ar_date, st_mtime, 10);
+  foo (ar_uid, st_uid, 10);
+  foo (ar_gid, st_gid, 10);
+  foo (ar_mode, st_mode, 8);
+
+  buf->st_size = arch_eltdata (abfd)->parsed_size;
+
+  return 0;
+}
+
+void
+bfd_dont_truncate_arname (abfd, pathname, arhdr)
+     bfd *abfd;
+     CONST char *pathname;
+     char *arhdr;
+{
+  /* FIXME: This interacts unpleasantly with ar's quick-append option.
+     Fortunately ic960 users will never use that option.  Fixing this
+     is very hard; fortunately I know how to do it and will do so once
+     intel's release is out the door. */
+
+  struct ar_hdr *hdr = (struct ar_hdr *) arhdr;
+  size_t length;
+  const char *filename;
+  size_t maxlen = ar_maxnamelen (abfd);
+
+  if ((bfd_get_file_flags (abfd) & BFD_TRADITIONAL_FORMAT) != 0)
+    {
+      bfd_bsd_truncate_arname (abfd, pathname, arhdr);
+      return;
+    }
+
+  filename = normalize (abfd, pathname);
+  if (filename == NULL)
+    {
+      /* FIXME */
+      abort ();
+    }
+
+  length = strlen (filename);
+
+  if (length <= maxlen)
+    memcpy (hdr->ar_name, filename, length);
+
+  /* Add the padding character if there is room for it.  */
+  if (length < maxlen
+      || (length == maxlen && length < sizeof hdr->ar_name))
+    (hdr->ar_name)[length] = ar_padchar (abfd);
+}
+
+void
+bfd_bsd_truncate_arname (abfd, pathname, arhdr)
+     bfd *abfd;
+     CONST char *pathname;
+     char *arhdr;
+{
+  struct ar_hdr *hdr = (struct ar_hdr *) arhdr;
+  int length;
+  CONST char *filename = strrchr (pathname, '/');
+  int maxlen = ar_maxnamelen (abfd);
+
+  if (filename == NULL)
+    filename = pathname;
+  else
+    ++filename;
+
+  length = strlen (filename);
+
+  if (length <= maxlen)
+    memcpy (hdr->ar_name, filename, length);
+  else
+    {
+      /* pathname: meet procrustes */
+      memcpy (hdr->ar_name, filename, maxlen);
+      length = maxlen;
+    }
+
+  if (length < maxlen)
+    (hdr->ar_name)[length] = ar_padchar (abfd);
+}
+
+/* Store name into ar header.  Truncates the name to fit.
+   1> strip pathname to be just the basename.
+   2> if it's short enuf to fit, stuff it in.
+   3> If it doesn't end with .o, truncate it to fit
+   4> truncate it before the .o, append .o, stuff THAT in.  */
+
+/* This is what gnu ar does.  It's better but incompatible with the
+   bsd ar. */
+
+void
+bfd_gnu_truncate_arname (abfd, pathname, arhdr)
+     bfd *abfd;
+     CONST char *pathname;
+     char *arhdr;
+{
+  struct ar_hdr *hdr = (struct ar_hdr *) arhdr;
+  int length;
+  CONST char *filename = strrchr (pathname, '/');
+  int maxlen = ar_maxnamelen (abfd);
+
+  if (filename == NULL)
+    filename = pathname;
+  else
+    ++filename;
+
+  length = strlen (filename);
+
+  if (length <= maxlen)
+    memcpy (hdr->ar_name, filename, length);
+  else
+    {				/* pathname: meet procrustes */
+      memcpy (hdr->ar_name, filename, maxlen);
+      if ((filename[length - 2] == '.') && (filename[length - 1] == 'o'))
+	{
+	  hdr->ar_name[maxlen - 2] = '.';
+	  hdr->ar_name[maxlen - 1] = 'o';
+	}
+      length = maxlen;
+    }
+
+  if (length < 16)
+    (hdr->ar_name)[length] = ar_padchar (abfd);
+}
+
+/* The BFD is open for write and has its format set to bfd_archive */
+
+boolean
+_bfd_write_archive_contents (arch)
+     bfd *arch;
+{
+  bfd *current;
+  char *etable = NULL;
+  bfd_size_type elength = 0;
+  const char *ename = NULL;
+  boolean makemap = bfd_has_map (arch);
+  boolean hasobjects = false;	/* if no .o's, don't bother to make a map */
+  bfd_size_type wrote;
+  unsigned int i;
+  int tries;
+
+  /* Verify the viability of all entries; if any of them live in the
+     filesystem (as opposed to living in an archive open for input)
+     then construct a fresh ar_hdr for them.  */
+  for (current = arch->archive_head; current; current = current->next)
+    {
+      if (bfd_write_p (current))
+	{
+	  bfd_set_error (bfd_error_invalid_operation);
+	  return false;
+	}
+      if (!current->arelt_data)
+	{
+	  current->arelt_data =
+	    (PTR) bfd_ar_hdr_from_filesystem (arch, current->filename, current);
+	  if (!current->arelt_data)
+	    return false;
+
+	  /* Put in the file name */
+	  BFD_SEND (arch, _bfd_truncate_arname, (arch,
+						 current->filename,
+					      (char *) arch_hdr (current)));
+	}
+
+      if (makemap && ! hasobjects)
+	{			/* don't bother if we won't make a map! */
+	  if ((bfd_check_format (current, bfd_object))
+#if 0				/* FIXME -- these are not set correctly */
+	      && ((bfd_get_file_flags (current) & HAS_SYMS))
+#endif
+	    )
+	    hasobjects = true;
+	}
+    }
+
+  if (!BFD_SEND (arch, _bfd_construct_extended_name_table,
+		 (arch, &etable, &elength, &ename)))
+    return false;
+
+  if (bfd_seek (arch, (file_ptr) 0, SEEK_SET) != 0)
+    return false;
+#ifdef GNU960
+  wrote = bfd_write (BFD_GNU960_ARMAG (arch), 1, SARMAG, arch);
+#else
+  wrote = bfd_write (ARMAG, 1, SARMAG, arch);
+#endif
+  if (wrote != SARMAG)
+    return false;
+
+  if (makemap && hasobjects)
+    {
+      if (_bfd_compute_and_write_armap (arch, elength) != true)
+	return false;
+    }
+
+  if (elength != 0)
+    {
+      struct ar_hdr hdr;
+
+      memset ((char *) (&hdr), 0, sizeof (struct ar_hdr));
+      strcpy (hdr.ar_name, ename);
+      /* Round size up to even number in archive header.  */
+      sprintf (&(hdr.ar_size[0]), "%-10d",
+	       (int) ((elength + 1) & ~1));
+      strncpy (hdr.ar_fmag, ARFMAG, 2);
+      for (i = 0; i < sizeof (struct ar_hdr); i++)
+	if (((char *) (&hdr))[i] == '\0')
+	  (((char *) (&hdr))[i]) = ' ';
+      if ((bfd_write ((char *) &hdr, 1, sizeof (struct ar_hdr), arch)
+	   != sizeof (struct ar_hdr))
+	  || bfd_write (etable, 1, elength, arch) != elength)
+	return false;
+      if ((elength % 2) == 1)
+	{
+	  if (bfd_write ("\012", 1, 1, arch) != 1)
+	    return false;
+	}
+    }
+
+  for (current = arch->archive_head; current; current = current->next)
+    {
+      char buffer[DEFAULT_BUFFERSIZE];
+      unsigned int remaining = arelt_size (current);
+      struct ar_hdr *hdr = arch_hdr (current);
+
+      /* write ar header */
+      if (bfd_write ((char *) hdr, 1, sizeof (*hdr), arch) != sizeof (*hdr))
+	return false;
+      if (bfd_seek (current, (file_ptr) 0, SEEK_SET) != 0)
+	return false;
+      while (remaining)
+	{
+	  unsigned int amt = DEFAULT_BUFFERSIZE;
+	  if (amt > remaining)
+	    amt = remaining;
+	  errno = 0;
+	  if (bfd_read (buffer, amt, 1, current) != amt)
+	    {
+	      if (bfd_get_error () != bfd_error_system_call)
+		bfd_set_error (bfd_error_malformed_archive);
+	      return false;
+	    }
+	  if (bfd_write (buffer, amt, 1, arch) != amt)
+	    return false;
+	  remaining -= amt;
+	}
+      if ((arelt_size (current) % 2) == 1)
+	{
+	  if (bfd_write ("\012", 1, 1, arch) != 1)
+	    return false;
+	}
+    }
+
+  if (makemap && hasobjects)
+    {
+      /* Verify the timestamp in the archive file.  If it would not be
+	 accepted by the linker, rewrite it until it would be.  If
+	 anything odd happens, break out and just return.  (The
+	 Berkeley linker checks the timestamp and refuses to read the
+	 table-of-contents if it is >60 seconds less than the file's
+	 modified-time.  That painful hack requires this painful hack.  */
+      tries = 1;
+      do
+	{
+	  if (bfd_update_armap_timestamp (arch))
+	    break;
+	  (*_bfd_error_handler)
+	    (_("Warning: writing archive was slow: rewriting timestamp\n"));
+	}
+      while (++tries < 6);
+    }
+
+  return true;
+}
+
+/* Note that the namidx for the first symbol is 0 */
+
+boolean
+_bfd_compute_and_write_armap (arch, elength)
+     bfd *arch;
+     unsigned int elength;
+{
+  char *first_name = NULL;
+  bfd *current;
+  file_ptr elt_no = 0;
+  struct orl *map = NULL;
+  int orl_max = 1024;		/* fine initial default */
+  int orl_count = 0;
+  int stridx = 0;		/* string index */
+  asymbol **syms = NULL;
+  long syms_max = 0;
+  boolean ret;
+
+  /* Dunno if this is the best place for this info... */
+  if (elength != 0)
+    elength += sizeof (struct ar_hdr);
+  elength += elength % 2;
+
+  map = (struct orl *) bfd_malloc (orl_max * sizeof (struct orl));
+  if (map == NULL)
+    goto error_return;
+
+  /* We put the symbol names on the arch objalloc, and then discard
+     them when done.  */
+  first_name = bfd_alloc (arch, 1);
+  if (first_name == NULL)
+    goto error_return;
+
+  /* Drop all the files called __.SYMDEF, we're going to make our
+     own */
+  while (arch->archive_head &&
+	 strcmp (arch->archive_head->filename, "__.SYMDEF") == 0)
+    arch->archive_head = arch->archive_head->next;
+
+  /* Map over each element */
+  for (current = arch->archive_head;
+       current != (bfd *) NULL;
+       current = current->next, elt_no++)
+    {
+      if ((bfd_check_format (current, bfd_object) == true)
+	  && ((bfd_get_file_flags (current) & HAS_SYMS)))
+	{
+	  long storage;
+	  long symcount;
+	  long src_count;
+
+	  storage = bfd_get_symtab_upper_bound (current);
+	  if (storage < 0)
+	    goto error_return;
+
+	  if (storage != 0)
+	    {
+	      if (storage > syms_max)
+		{
+		  if (syms_max > 0)
+		    free (syms);
+		  syms_max = storage;
+		  syms = (asymbol **) bfd_malloc ((size_t) syms_max);
+		  if (syms == NULL)
+		    goto error_return;
+		}
+	      symcount = bfd_canonicalize_symtab (current, syms);
+	      if (symcount < 0)
+		goto error_return;
+
+	      /* Now map over all the symbols, picking out the ones we want */
+	      for (src_count = 0; src_count < symcount; src_count++)
+		{
+		  flagword flags = (syms[src_count])->flags;
+		  asection *sec = syms[src_count]->section;
+
+		  if ((flags & BSF_GLOBAL ||
+		       flags & BSF_WEAK ||
+		       flags & BSF_INDIRECT ||
+		       bfd_is_com_section (sec))
+		      && ! bfd_is_und_section (sec))
+		    {
+		      size_t namelen;
+		      struct orl *new_map;
+
+		      /* This symbol will go into the archive header */
+		      if (orl_count == orl_max)
+			{
+			  orl_max *= 2;
+			  new_map =
+			    ((struct orl *)
+			     bfd_realloc (map, orl_max * sizeof (struct orl)));
+			  if (new_map == (struct orl *) NULL)
+			    goto error_return;
+
+			  map = new_map;
+			}
+
+		      namelen = strlen (syms[src_count]->name);
+		      map[orl_count].name = ((char **)
+					     bfd_alloc (arch,
+							sizeof (char *)));
+		      if (map[orl_count].name == NULL)
+			goto error_return;
+		      *(map[orl_count].name) = bfd_alloc (arch, namelen + 1);
+		      if (*(map[orl_count].name) == NULL)
+			goto error_return;
+		      strcpy (*(map[orl_count].name), syms[src_count]->name);
+		      (map[orl_count]).pos = (file_ptr) current;
+		      (map[orl_count]).namidx = stridx;
+
+		      stridx += namelen + 1;
+		      ++orl_count;
+		    }
+		}
+	    }
+
+	  /* Now ask the BFD to free up any cached information, so we
+	     don't fill all of memory with symbol tables.  */
+	  if (! bfd_free_cached_info (current))
+	    goto error_return;
+	}
+    }
+
+  /* OK, now we have collected all the data, let's write them out */
+  ret = BFD_SEND (arch, write_armap,
+		  (arch, elength, map, orl_count, stridx));
+
+  if (syms_max > 0)
+    free (syms);
+  if (map != NULL)
+    free (map);
+  if (first_name != NULL)
+    bfd_release (arch, first_name);
+
+  return ret;
+
+ error_return:
+  if (syms_max > 0)
+    free (syms);
+  if (map != NULL)
+    free (map);
+  if (first_name != NULL)
+    bfd_release (arch, first_name);
+
+  return false;
+}
+
+boolean
+bsd_write_armap (arch, elength, map, orl_count, stridx)
+     bfd *arch;
+     unsigned int elength;
+     struct orl *map;
+     unsigned int orl_count;
+     int stridx;
+{
+  int padit = stridx & 1;
+  unsigned int ranlibsize = orl_count * BSD_SYMDEF_SIZE;
+  unsigned int stringsize = stridx + padit;
+  /* Include 8 bytes to store ranlibsize and stringsize in output. */
+  unsigned int mapsize = ranlibsize + stringsize + 8;
+  file_ptr firstreal;
+  bfd *current = arch->archive_head;
+  bfd *last_elt = current;	/* last element arch seen */
+  bfd_byte temp[4];
+  unsigned int count;
+  struct ar_hdr hdr;
+  struct stat statbuf;
+  unsigned int i;
+
+  firstreal = mapsize + elength + sizeof (struct ar_hdr) + SARMAG;
+
+  stat (arch->filename, &statbuf);
+  memset ((char *) (&hdr), 0, sizeof (struct ar_hdr));
+  sprintf (hdr.ar_name, RANLIBMAG);
+  /* Remember the timestamp, to keep it holy.  But fudge it a little.  */
+  bfd_ardata (arch)->armap_timestamp = statbuf.st_mtime + ARMAP_TIME_OFFSET;
+  bfd_ardata (arch)->armap_datepos = (SARMAG
+				      + offsetof (struct ar_hdr, ar_date[0]));
+  sprintf (hdr.ar_date, "%ld", bfd_ardata (arch)->armap_timestamp);
+#ifndef _WIN32
+  sprintf (hdr.ar_uid, "%ld", (long) getuid ());
+  sprintf (hdr.ar_gid, "%ld", (long) getgid ());
+#else
+  sprintf (hdr.ar_uid, "%ld", (long) 666);
+  sprintf (hdr.ar_gid, "%ld", (long) 42);
+#endif
+  sprintf (hdr.ar_size, "%-10d", (int) mapsize);
+  strncpy (hdr.ar_fmag, ARFMAG, 2);
+  for (i = 0; i < sizeof (struct ar_hdr); i++)
+    if (((char *) (&hdr))[i] == '\0')
+      (((char *) (&hdr))[i]) = ' ';
+  if (bfd_write ((char *) &hdr, 1, sizeof (struct ar_hdr), arch)
+      != sizeof (struct ar_hdr))
+    return false;
+  bfd_h_put_32 (arch, (bfd_vma) ranlibsize, temp);
+  if (bfd_write (temp, 1, sizeof (temp), arch) != sizeof (temp))
+    return false;
+
+  for (count = 0; count < orl_count; count++)
+    {
+      bfd_byte buf[BSD_SYMDEF_SIZE];
+
+      if (((bfd *) (map[count]).pos) != last_elt)
+	{
+	  do
+	    {
+	      firstreal += arelt_size (current) + sizeof (struct ar_hdr);
+	      firstreal += firstreal % 2;
+	      current = current->next;
+	    }
+	  while (current != (bfd *) (map[count]).pos);
+	}			/* if new archive element */
+
+      last_elt = current;
+      bfd_h_put_32 (arch, map[count].namidx, buf);
+      bfd_h_put_32 (arch, firstreal, buf + BSD_SYMDEF_OFFSET_SIZE);
+      if (bfd_write (buf, BSD_SYMDEF_SIZE, 1, arch) != BSD_SYMDEF_SIZE)
+	return false;
+    }
+
+  /* now write the strings themselves */
+  bfd_h_put_32 (arch, stringsize, temp);
+  if (bfd_write (temp, 1, sizeof (temp), arch) != sizeof (temp))
+    return false;
+  for (count = 0; count < orl_count; count++)
+    {
+      size_t len = strlen (*map[count].name) + 1;
+
+      if (bfd_write (*map[count].name, 1, len, arch) != len)
+	return false;
+    }
+
+  /* The spec sez this should be a newline.  But in order to be
+     bug-compatible for sun's ar we use a null. */
+  if (padit)
+    {
+      if (bfd_write ("", 1, 1, arch) != 1)
+	return false;
+    }
+
+  return true;
+}
+
+/* At the end of archive file handling, update the timestamp in the
+   file, so the linker will accept it.
+
+   Return true if the timestamp was OK, or an unusual problem happened.
+   Return false if we updated the timestamp.  */
+
+boolean
+_bfd_archive_bsd_update_armap_timestamp (arch)
+     bfd *arch;
+{
+  struct stat archstat;
+  struct ar_hdr hdr;
+  unsigned int i;
+
+  /* Flush writes, get last-write timestamp from file, and compare it
+     to the timestamp IN the file.  */
+  bfd_flush (arch);
+  if (bfd_stat (arch, &archstat) == -1)
+    {
+      perror (_("Reading archive file mod timestamp"));
+      return true;		/* Can't read mod time for some reason */
+    }
+  if (archstat.st_mtime <= bfd_ardata (arch)->armap_timestamp)
+    return true;		/* OK by the linker's rules */
+
+  /* Update the timestamp.  */
+  bfd_ardata (arch)->armap_timestamp = archstat.st_mtime + ARMAP_TIME_OFFSET;
+
+  /* Prepare an ASCII version suitable for writing.  */
+  memset (hdr.ar_date, 0, sizeof (hdr.ar_date));
+  sprintf (hdr.ar_date, "%ld", bfd_ardata (arch)->armap_timestamp);
+  for (i = 0; i < sizeof (hdr.ar_date); i++)
+    if (hdr.ar_date[i] == '\0')
+      (hdr.ar_date)[i] = ' ';
+
+  /* Write it into the file.  */
+  bfd_ardata (arch)->armap_datepos = (SARMAG
+				      + offsetof (struct ar_hdr, ar_date[0]));
+  if (bfd_seek (arch, bfd_ardata (arch)->armap_datepos, SEEK_SET) != 0
+      || (bfd_write (hdr.ar_date, sizeof (hdr.ar_date), 1, arch)
+	  != sizeof (hdr.ar_date)))
+    {
+      /* FIXME: bfd can't call perror.  */
+      perror (_("Writing updated armap timestamp"));
+      return true;		/* Some error while writing */
+    }
+
+  return false;			/* We updated the timestamp successfully.  */
+}
+
+/* A coff armap looks like :
+   lARMAG
+   struct ar_hdr with name = '/'
+   number of symbols
+   offset of file for symbol 0
+   offset of file for symbol 1
+
+   offset of file for symbol n-1
+   symbol name 0
+   symbol name 1
+
+   symbol name n-1
+*/
+
+boolean
+coff_write_armap (arch, elength, map, symbol_count, stridx)
+     bfd *arch;
+     unsigned int elength;
+     struct orl *map;
+     unsigned int symbol_count;
+     int stridx;
+{
+  /* The size of the ranlib is the number of exported symbols in the
+     archive * the number of bytes in a int, + an int for the count */
+  unsigned int ranlibsize = (symbol_count * 4) + 4;
+  unsigned int stringsize = stridx;
+  unsigned int mapsize = stringsize + ranlibsize;
+  file_ptr archive_member_file_ptr;
+  bfd *current = arch->archive_head;
+  unsigned int count;
+  struct ar_hdr hdr;
+  unsigned int i;
+  int padit = mapsize & 1;
+
+  if (padit)
+    mapsize++;
+
+  /* work out where the first object file will go in the archive */
+  archive_member_file_ptr = (mapsize
+			     + elength
+			     + sizeof (struct ar_hdr)
+			     + SARMAG);
+
+  memset ((char *) (&hdr), 0, sizeof (struct ar_hdr));
+  hdr.ar_name[0] = '/';
+  sprintf (hdr.ar_size, "%-10d", (int) mapsize);
+  sprintf (hdr.ar_date, "%ld", (long) time (NULL));
+  /* This, at least, is what Intel coff sets the values to.: */
+  sprintf ((hdr.ar_uid), "%d", 0);
+  sprintf ((hdr.ar_gid), "%d", 0);
+  sprintf ((hdr.ar_mode), "%-7o", (unsigned) 0);
+  strncpy (hdr.ar_fmag, ARFMAG, 2);
+
+  for (i = 0; i < sizeof (struct ar_hdr); i++)
+    if (((char *) (&hdr))[i] == '\0')
+      (((char *) (&hdr))[i]) = ' ';
+
+  /* Write the ar header for this item and the number of symbols */
+
+  if (bfd_write ((PTR) &hdr, 1, sizeof (struct ar_hdr), arch)
+      != sizeof (struct ar_hdr))
+    return false;
+
+  bfd_write_bigendian_4byte_int (arch, symbol_count);
+
+  /* Two passes, first write the file offsets for each symbol -
+     remembering that each offset is on a two byte boundary.  */
+
+  /* Write out the file offset for the file associated with each
+     symbol, and remember to keep the offsets padded out.  */
+
+  current = arch->archive_head;
+  count = 0;
+  while (current != (bfd *) NULL && count < symbol_count)
+    {
+      /* For each symbol which is used defined in this object, write out
+	 the object file's address in the archive */
+
+      while (((bfd *) (map[count]).pos) == current)
+	{
+	  bfd_write_bigendian_4byte_int (arch, archive_member_file_ptr);
+	  count++;
+	}
+      /* Add size of this archive entry */
+      archive_member_file_ptr += (arelt_size (current)
+				  + sizeof (struct ar_hdr));
+      /* remember aboout the even alignment */
+      archive_member_file_ptr += archive_member_file_ptr % 2;
+      current = current->next;
+    }
+
+  /* now write the strings themselves */
+  for (count = 0; count < symbol_count; count++)
+    {
+      size_t len = strlen (*map[count].name) + 1;
+
+      if (bfd_write (*map[count].name, 1, len, arch) != len)
+	return false;
+    }
+
+  /* The spec sez this should be a newline.  But in order to be
+     bug-compatible for arc960 we use a null. */
+  if (padit)
+    {
+      if (bfd_write ("", 1, 1, arch) != 1)
+	return false;
+    }
+
+  return true;
+}