2002-11-16 Klee Dienes <kdienes@apple.com>

	* Makefile.am (BFD32_LIBS): Add bfdwin.lo, bfdio.lo.
	(BFD32_LIBS_CFILES): Add bfdwin.c, bfdio.c.
	(BFD_H_FILES): Add bfdwin.c, bfdio.c.
	(LIBBFD_H_FILES): Add bfdwin.c, bfdio.c.
	Add dependencies for bfdwin.c, bfdio.c.
	* bfd.c: Remove bfd_get_mtime, bfd_get_size.
	* libbfd.c: Remove real_read, bfd_bread, _bfd_window_internal,
	bfd_init_window, bfd_free_window, bfd_get_file_window, bfd_bwrite,
	bfd_tell, bfd_flush, bfd_stat, bfd_seek.
	* bfdio.c: New file.  Contains real_read, bfd_bread, bfd_write,
	bfd_tell, bfd_flush, bfd_stat, bfd_seek, bfd_ge_mtime,
	bfd_get_size (moved from libbfd.c and bfd.c).
	* bfdwin.c New file.  Contains _bfd_window_internal,
	bfd_init_window, bfd_free_window, bfd_get_file_window (moved from
	libbfd.c and bfd.c).
	* po/SRC-POTFILES.in: Regenerate.
	* po/bfd.pot: Regenerate.
	* libbfd.h: Regenerate.
	* bfd-in2.h: Regenerate.
	* aclocal.m4: Regenerate.
	* Makefile.in: Regenerate.
	* configure: Regenerate.

2002-11-16  Klee Dienes  <kdienes@apple.com>

	* Makefile.am (DOCFILES): Add bfdwin.texi, bfdio.texi.
	(PROTOS): Add bfdio.p, bfdwin.p.
	(SRCDOC): Add bfdio.c, bfdwin.c.
	(SRCPROT): Add bfdio.c, bfdwin.c.
	(SRCIPROT): Add bfdio.c, bfdwin.c.
	(LIBBFD_H_DEP): Add bfdio.c, bfdwin.c.
	(BFD_H_DEP): Add bfdio.c, bfdwin.c.
	Add rules for bfdio.texi, bfdwin.text.
	* bfd.texinfo: Include bfdio.texi.

1 files changed, 0 insertions, 548 deletions

diff --git a/bfd/libbfd.c b/bfd/libbfd.c
index f21abbc..8783def 100644
--- a/bfd/libbfd.c
+++ b/bfd/libbfd.c
@@ -28,8 +28,6 @@
 #define getpagesize() 2048
 #endif
 
-static size_t real_read PARAMS ((PTR, size_t, size_t, FILE *));
-
 /*
 SECTION
 	Internal functions
@@ -222,372 +220,6 @@ bfd_zmalloc (size)
 
   return ptr;
 }
-
-/* Some IO code */
-
-/* Note that archive entries don't have streams; they share their parent's.
-   This allows someone to play with the iostream behind BFD's back.
-
-   Also, note that the origin pointer points to the beginning of a file's
-   contents (0 for non-archive elements).  For archive entries this is the
-   first octet in the file, NOT the beginning of the archive header.  */
-
-static size_t
-real_read (where, a, b, file)
-     PTR where;
-     size_t a;
-     size_t b;
-     FILE *file;
-{
-  /* FIXME - this looks like an optimization, but it's really to cover
-     up for a feature of some OSs (not solaris - sigh) that
-     ld/pe-dll.c takes advantage of (apparently) when it creates BFDs
-     internally and tries to link against them.  BFD seems to be smart
-     enough to realize there are no symbol records in the "file" that
-     doesn't exist but attempts to read them anyway.  On Solaris,
-     attempting to read zero bytes from a NULL file results in a core
-     dump, but on other platforms it just returns zero bytes read.
-     This makes it to something reasonable. - DJ */
-  if (a == 0 || b == 0)
-    return 0;
-
-
-#if defined (__VAX) && defined (VMS)
-  /* Apparently fread on Vax VMS does not keep the record length
-     information.  */
-  return read (fileno (file), where, a * b);
-#else
-  return fread (where, a, b, file);
-#endif
-}
-
-/* Return value is amount read.  */
-
-bfd_size_type
-bfd_bread (ptr, size, abfd)
-     PTR ptr;
-     bfd_size_type size;
-     bfd *abfd;
-{
-  size_t nread;
-
-  if ((abfd->flags & BFD_IN_MEMORY) != 0)
-    {
-      struct bfd_in_memory *bim;
-      bfd_size_type get;
-
-      bim = (struct bfd_in_memory *) abfd->iostream;
-      get = size;
-      if (abfd->where + get > bim->size)
-	{
-	  if (bim->size < (bfd_size_type) abfd->where)
-	    get = 0;
-	  else
-	    get = bim->size - abfd->where;
-	  bfd_set_error (bfd_error_file_truncated);
-	}
-      memcpy (ptr, bim->buffer + abfd->where, (size_t) get);
-      abfd->where += get;
-      return get;
-    }
-
-  nread = real_read (ptr, 1, (size_t) size, bfd_cache_lookup (abfd));
-  if (nread != (size_t) -1)
-    abfd->where += nread;
-
-  /* Set bfd_error if we did not read as much data as we expected.
-
-     If the read failed due to an error set the bfd_error_system_call,
-     else set bfd_error_file_truncated.
-
-     A BFD backend may wish to override bfd_error_file_truncated to
-     provide something more useful (eg. no_symbols or wrong_format).  */
-  if (nread != size)
-    {
-      if (ferror (bfd_cache_lookup (abfd)))
-	bfd_set_error (bfd_error_system_call);
-      else
-	bfd_set_error (bfd_error_file_truncated);
-    }
-
-  return nread;
-}
-
-/* The window support stuff should probably be broken out into
-   another file....  */
-/* The idea behind the next and refcount fields is that one mapped
-   region can suffice for multiple read-only windows or multiple
-   non-overlapping read-write windows.  It's not implemented yet
-   though.  */
-struct _bfd_window_internal {
-  struct _bfd_window_internal *next;
-  PTR data;
-  bfd_size_type size;
-  int refcount : 31;		/* should be enough...  */
-  unsigned mapped : 1;		/* 1 = mmap, 0 = malloc */
-};
-
-void
-bfd_init_window (windowp)
-     bfd_window *windowp;
-{
-  windowp->data = 0;
-  windowp->i = 0;
-  windowp->size = 0;
-}
-
-/* Currently, if USE_MMAP is undefined, none if the window stuff is
-   used.  Okay, so it's mis-named.  At least the command-line option
-   "--without-mmap" is more obvious than "--without-windows" or some
-   such.  */
-#ifdef USE_MMAP
-
-#undef HAVE_MPROTECT /* code's not tested yet */
-
-#if HAVE_MMAP || HAVE_MPROTECT || HAVE_MADVISE
-#include <sys/mman.h>
-#endif
-
-#ifndef MAP_FILE
-#define MAP_FILE 0
-#endif
-
-static int debug_windows;
-
-void
-bfd_free_window (windowp)
-     bfd_window *windowp;
-{
-  bfd_window_internal *i = windowp->i;
-  windowp->i = 0;
-  windowp->data = 0;
-  if (i == 0)
-    return;
-  i->refcount--;
-  if (debug_windows)
-    fprintf (stderr, "freeing window @%p<%p,%lx,%p>\n",
-	     windowp, windowp->data, windowp->size, windowp->i);
-  if (i->refcount != 0)
-    return;
-
-  if (i->mapped)
-    {
-#ifdef HAVE_MMAP
-      munmap (i->data, i->size);
-      goto no_free;
-#else
-      abort ();
-#endif
-    }
-#ifdef HAVE_MPROTECT
-  mprotect (i->data, i->size, PROT_READ | PROT_WRITE);
-#endif
-  free (i->data);
-#ifdef HAVE_MMAP
- no_free:
-#endif
-  i->data = 0;
-  /* There should be no more references to i at this point.  */
-  free (i);
-}
-
-static int ok_to_map = 1;
-
-boolean
-bfd_get_file_window (abfd, offset, size, windowp, writable)
-     bfd *abfd;
-     file_ptr offset;
-     bfd_size_type size;
-     bfd_window *windowp;
-     boolean writable;
-{
-  static size_t pagesize;
-  bfd_window_internal *i = windowp->i;
-  bfd_size_type size_to_alloc = size;
-
-  if (debug_windows)
-    fprintf (stderr, "bfd_get_file_window (%p, %6ld, %6ld, %p<%p,%lx,%p>, %d)",
-	     abfd, (long) offset, (long) size,
-	     windowp, windowp->data, (unsigned long) windowp->size,
-	     windowp->i, writable);
-
-  /* Make sure we know the page size, so we can be friendly to mmap.  */
-  if (pagesize == 0)
-    pagesize = getpagesize ();
-  if (pagesize == 0)
-    abort ();
-
-  if (i == 0)
-    {
-      i = ((bfd_window_internal *)
-	   bfd_zmalloc ((bfd_size_type) sizeof (bfd_window_internal)));
-      windowp->i = i;
-      if (i == 0)
-	return false;
-      i->data = 0;
-    }
-#ifdef HAVE_MMAP
-  if (ok_to_map
-      && (i->data == 0 || i->mapped == 1)
-      && (abfd->flags & BFD_IN_MEMORY) == 0)
-    {
-      file_ptr file_offset, offset2;
-      size_t real_size;
-      int fd;
-      FILE *f;
-
-      /* Find the real file and the real offset into it.  */
-      while (abfd->my_archive != NULL)
-	{
-	  offset += abfd->origin;
-	  abfd = abfd->my_archive;
-	}
-      f = bfd_cache_lookup (abfd);
-      fd = fileno (f);
-
-      /* Compute offsets and size for mmap and for the user's data.  */
-      offset2 = offset % pagesize;
-      if (offset2 < 0)
-	abort ();
-      file_offset = offset - offset2;
-      real_size = offset + size - file_offset;
-      real_size = real_size + pagesize - 1;
-      real_size -= real_size % pagesize;
-
-      /* If we're re-using a memory region, make sure it's big enough.  */
-      if (i->data && i->size < size)
-	{
-	  munmap (i->data, i->size);
-	  i->data = 0;
-	}
-      i->data = mmap (i->data, real_size,
-		      writable ? PROT_WRITE | PROT_READ : PROT_READ,
-		      (writable
-		       ? MAP_FILE | MAP_PRIVATE
-		       : MAP_FILE | MAP_SHARED),
-		      fd, file_offset);
-      if (i->data == (PTR) -1)
-	{
-	  /* An error happened.  Report it, or try using malloc, or
-	     something.  */
-	  bfd_set_error (bfd_error_system_call);
-	  i->data = 0;
-	  windowp->data = 0;
-	  if (debug_windows)
-	    fprintf (stderr, "\t\tmmap failed!\n");
-	  return false;
-	}
-      if (debug_windows)
-	fprintf (stderr, "\n\tmapped %ld at %p, offset is %ld\n",
-		 (long) real_size, i->data, (long) offset2);
-      i->size = real_size;
-      windowp->data = (PTR) ((bfd_byte *) i->data + offset2);
-      windowp->size = size;
-      i->mapped = 1;
-      return true;
-    }
-  else if (debug_windows)
-    {
-      if (ok_to_map)
-	fprintf (stderr, _("not mapping: data=%lx mapped=%d\n"),
-		 (unsigned long) i->data, (int) i->mapped);
-      else
-	fprintf (stderr, _("not mapping: env var not set\n"));
-    }
-#else
-  ok_to_map = 0;
-#endif
-
-#ifdef HAVE_MPROTECT
-  if (!writable)
-    {
-      size_to_alloc += pagesize - 1;
-      size_to_alloc -= size_to_alloc % pagesize;
-    }
-#endif
-  if (debug_windows)
-    fprintf (stderr, "\n\t%s(%6ld)",
-	     i->data ? "realloc" : " malloc", (long) size_to_alloc);
-  i->data = (PTR) bfd_realloc (i->data, size_to_alloc);
-  if (debug_windows)
-    fprintf (stderr, "\t-> %p\n", i->data);
-  i->refcount = 1;
-  if (i->data == NULL)
-    {
-      if (size_to_alloc == 0)
-	return true;
-      return false;
-    }
-  if (bfd_seek (abfd, offset, SEEK_SET) != 0)
-    return false;
-  i->size = bfd_bread (i->data, size, abfd);
-  if (i->size != size)
-    return false;
-  i->mapped = 0;
-#ifdef HAVE_MPROTECT
-  if (!writable)
-    {
-      if (debug_windows)
-	fprintf (stderr, "\tmprotect (%p, %ld, PROT_READ)\n", i->data,
-		 (long) i->size);
-      mprotect (i->data, i->size, PROT_READ);
-    }
-#endif
-  windowp->data = i->data;
-  windowp->size = i->size;
-  return true;
-}
-
-#endif /* USE_MMAP */
-
-bfd_size_type
-bfd_bwrite (ptr, size, abfd)
-     const PTR ptr;
-     bfd_size_type size;
-     bfd *abfd;
-{
-  size_t nwrote;
-
-  if ((abfd->flags & BFD_IN_MEMORY) != 0)
-    {
-      struct bfd_in_memory *bim = (struct bfd_in_memory *) (abfd->iostream);
-      size = (size_t) size;
-      if (abfd->where + size > bim->size)
-	{
-	  bfd_size_type newsize, oldsize;
-
-	  oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
-	  bim->size = abfd->where + size;
-	  /* Round up to cut down on memory fragmentation */
-	  newsize = (bim->size + 127) & ~(bfd_size_type) 127;
-	  if (newsize > oldsize)
-	    {
-	      bim->buffer = (bfd_byte *) bfd_realloc (bim->buffer, newsize);
-	      if (bim->buffer == 0)
-		{
-		  bim->size = 0;
-		  return 0;
-		}
-	    }
-	}
-      memcpy (bim->buffer + abfd->where, ptr, (size_t) size);
-      abfd->where += size;
-      return size;
-    }
-
-  nwrote = fwrite (ptr, 1, (size_t) size, bfd_cache_lookup (abfd));
-  if (nwrote != (size_t) -1)
-    abfd->where += nwrote;
-  if (nwrote != size)
-    {
-#ifdef ENOSPC
-      errno = ENOSPC;
-#endif
-      bfd_set_error (bfd_error_system_call);
-    }
-  return nwrote;
-}
-
 /*
 INTERNAL_FUNCTION
 	bfd_write_bigendian_4byte_int
@@ -611,186 +243,6 @@ bfd_write_bigendian_4byte_int (abfd, i)
   return (boolean) (bfd_bwrite ((PTR) buffer, (bfd_size_type) 4, abfd) == 4);
 }
 
-bfd_vma
-bfd_tell (abfd)
-     bfd *abfd;
-{
-  file_ptr ptr;
-
-  if ((abfd->flags & BFD_IN_MEMORY) != 0)
-    return abfd->where;
-
-  ptr = ftell (bfd_cache_lookup (abfd));
-
-  if (abfd->my_archive)
-    ptr -= abfd->origin;
-  abfd->where = ptr;
-  return ptr;
-}
-
-int
-bfd_flush (abfd)
-     bfd *abfd;
-{
-  if ((abfd->flags & BFD_IN_MEMORY) != 0)
-    return 0;
-  return fflush (bfd_cache_lookup(abfd));
-}
-
-/* Returns 0 for success, negative value for failure (in which case
-   bfd_get_error can retrieve the error code).  */
-int
-bfd_stat (abfd, statbuf)
-     bfd *abfd;
-     struct stat *statbuf;
-{
-  FILE *f;
-  int result;
-
-  if ((abfd->flags & BFD_IN_MEMORY) != 0)
-    abort ();
-
-  f = bfd_cache_lookup (abfd);
-  if (f == NULL)
-    {
-      bfd_set_error (bfd_error_system_call);
-      return -1;
-    }
-  result = fstat (fileno (f), statbuf);
-  if (result < 0)
-    bfd_set_error (bfd_error_system_call);
-  return result;
-}
-
-/* Returns 0 for success, nonzero for failure (in which case bfd_get_error
-   can retrieve the error code).  */
-
-int
-bfd_seek (abfd, position, direction)
-     bfd *abfd;
-     file_ptr position;
-     int direction;
-{
-  int result;
-  FILE *f;
-  long file_position;
-  /* For the time being, a BFD may not seek to it's end.  The problem
-     is that we don't easily have a way to recognize the end of an
-     element in an archive.  */
-
-  BFD_ASSERT (direction == SEEK_SET || direction == SEEK_CUR);
-
-  if (direction == SEEK_CUR && position == 0)
-    return 0;
-
-  if ((abfd->flags & BFD_IN_MEMORY) != 0)
-    {
-      struct bfd_in_memory *bim;
-
-      bim = (struct bfd_in_memory *) abfd->iostream;
-
-      if (direction == SEEK_SET)
-	abfd->where = position;
-      else
-	abfd->where += position;
-
-      if (abfd->where > bim->size)
-	{
-	  if ((abfd->direction == write_direction) ||
-	      (abfd->direction == both_direction))
-	    {
-	      bfd_size_type newsize, oldsize;
-	      oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
-	      bim->size = abfd->where;
-	      /* Round up to cut down on memory fragmentation */
-	      newsize = (bim->size + 127) & ~(bfd_size_type) 127;
-	      if (newsize > oldsize)
-	        {
-		  bim->buffer = (bfd_byte *) bfd_realloc (bim->buffer, newsize);
-		  if (bim->buffer == 0)
-		    {
-		      bim->size = 0;
-		      return -1;
-		    }
-	        }
-	    }
-	  else
-	    {
-	      abfd->where = bim->size;
-	      bfd_set_error (bfd_error_file_truncated);
-	      return -1;
-	    }
-	}
-      return 0;
-    }
-
-  if (abfd->format != bfd_archive && abfd->my_archive == 0)
-    {
-#if 0
-      /* Explanation for this code: I'm only about 95+% sure that the above
-	 conditions are sufficient and that all i/o calls are properly
-	 adjusting the `where' field.  So this is sort of an `assert'
-	 that the `where' field is correct.  If we can go a while without
-	 tripping the abort, we can probably safely disable this code,
-	 so that the real optimizations happen.  */
-      file_ptr where_am_i_now;
-      where_am_i_now = ftell (bfd_cache_lookup (abfd));
-      if (abfd->my_archive)
-	where_am_i_now -= abfd->origin;
-      if (where_am_i_now != abfd->where)
-	abort ();
-#endif
-      if (direction == SEEK_SET && (bfd_vma) position == abfd->where)
-	return 0;
-    }
-  else
-    {
-      /* We need something smarter to optimize access to archives.
-	 Currently, anything inside an archive is read via the file
-	 handle for the archive.  Which means that a bfd_seek on one
-	 component affects the `current position' in the archive, as
-	 well as in any other component.
-
-	 It might be sufficient to put a spike through the cache
-	 abstraction, and look to the archive for the file position,
-	 but I think we should try for something cleaner.
-
-	 In the meantime, no optimization for archives.  */
-    }
-
-  f = bfd_cache_lookup (abfd);
-  file_position = position;
-  if (direction == SEEK_SET && abfd->my_archive != NULL)
-    file_position += abfd->origin;
-
-  result = fseek (f, file_position, direction);
-  if (result != 0)
-    {
-      int hold_errno = errno;
-
-      /* Force redetermination of `where' field.  */
-      bfd_tell (abfd);
-
-      /* An EINVAL error probably means that the file offset was
-         absurd.  */
-      if (hold_errno == EINVAL)
-	bfd_set_error (bfd_error_file_truncated);
-      else
-	{
-	  bfd_set_error (bfd_error_system_call);
-	  errno = hold_errno;
-	}
-    }
-  else
-    {
-      /* Adjust `where' field.  */
-      if (direction == SEEK_SET)
-	abfd->where = position;
-      else
-	abfd->where += position;
-    }
-  return result;
-}
 
 /** The do-it-yourself (byte) sex-change kit */