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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /malloc/obstack.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
downloadglibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'malloc/obstack.c')
-rw-r--r--malloc/obstack.c71
1 files changed, 26 insertions, 45 deletions
diff --git a/malloc/obstack.c b/malloc/obstack.c
index 75440d9c79..fddda3ec5b 100644
--- a/malloc/obstack.c
+++ b/malloc/obstack.c
@@ -1,7 +1,8 @@
/* obstack.c - subroutines used implicitly by object stack macros
- Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
+ Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996, 1997,
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library. Its master source is NOT part of
+ the C library, however. The master source lives in /gd/gnu/lib.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -15,9 +16,8 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
-
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
@@ -52,38 +52,22 @@
# endif
#endif
-#include <stddef.h>
+#if defined _LIBC && defined USE_IN_LIBIO
+# include <wchar.h>
+#endif
#ifndef ELIDE_CODE
-# if HAVE_INTTYPES_H
-# include <inttypes.h>
-# endif
-# if HAVE_STDINT_H || defined _LIBC
-# include <stdint.h>
-# endif
-
/* Determine default alignment. */
-union fooround
-{
- uintmax_t i;
- long double d;
- void *p;
-};
-struct fooalign
-{
- char c;
- union fooround u;
-};
+struct fooalign {char x; double d;};
+# define DEFAULT_ALIGNMENT \
+ ((PTR_INT_TYPE) ((char *) &((struct fooalign *) 0)->d - (char *) 0))
/* If malloc were really smart, it would round addresses to DEFAULT_ALIGNMENT.
But in fact it might be less smart and round addresses to as much as
DEFAULT_ROUNDING. So we prepare for it to do that. */
-enum
- {
- DEFAULT_ALIGNMENT = offsetof (struct fooalign, u),
- DEFAULT_ROUNDING = sizeof (union fooround)
- };
+union fooround {long x; double d;};
+# define DEFAULT_ROUNDING (sizeof (union fooround))
/* When we copy a long block of data, this is the unit to do it with.
On some machines, copying successive ints does not work;
@@ -159,7 +143,7 @@ _obstack_begin (struct obstack *h,
register struct _obstack_chunk *chunk; /* points to new chunk */
if (alignment == 0)
- alignment = DEFAULT_ALIGNMENT;
+ alignment = (int) DEFAULT_ALIGNMENT;
if (size == 0)
/* Default size is what GNU malloc can fit in a 4096-byte block. */
{
@@ -186,8 +170,7 @@ _obstack_begin (struct obstack *h,
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
- h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
- alignment - 1);
+ h->next_free = h->object_base = chunk->contents;
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
@@ -206,7 +189,7 @@ _obstack_begin_1 (struct obstack *h, int size, int alignment,
register struct _obstack_chunk *chunk; /* points to new chunk */
if (alignment == 0)
- alignment = DEFAULT_ALIGNMENT;
+ alignment = (int) DEFAULT_ALIGNMENT;
if (size == 0)
/* Default size is what GNU malloc can fit in a 4096-byte block. */
{
@@ -234,8 +217,7 @@ _obstack_begin_1 (struct obstack *h, int size, int alignment,
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
- h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
- alignment - 1);
+ h->next_free = h->object_base = chunk->contents;
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
@@ -277,7 +259,8 @@ _obstack_newchunk (struct obstack *h, int length)
/* Compute an aligned object_base in the new chunk */
object_base =
- __PTR_ALIGN ((char *) new_chunk, new_chunk->contents, h->alignment_mask);
+ __INT_TO_PTR ((__PTR_TO_INT (new_chunk->contents) + h->alignment_mask)
+ & ~ (h->alignment_mask));
/* Move the existing object to the new chunk.
Word at a time is fast and is safe if the object
@@ -302,10 +285,7 @@ _obstack_newchunk (struct obstack *h, int length)
/* If the object just copied was the only data in OLD_CHUNK,
free that chunk and remove it from the chain.
But not if that chunk might contain an empty object. */
- if (! h->maybe_empty_object
- && (h->object_base
- == __PTR_ALIGN ((char *) old_chunk, old_chunk->contents,
- h->alignment_mask)))
+ if (h->object_base == old_chunk->contents && ! h->maybe_empty_object)
{
new_chunk->prev = old_chunk->prev;
CALL_FREEFUN (h, old_chunk);
@@ -430,11 +410,12 @@ print_and_abort (void)
happen because the "memory exhausted" message appears in other places
like this and the translation should be reused instead of creating
a very similar string which requires a separate translation. */
-# ifdef _LIBC
- (void) __fxprintf (NULL, "%s\n", _("memory exhausted"));
-# else
- fprintf (stderr, "%s\n", _("memory exhausted"));
+# if defined _LIBC && defined USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ __fwprintf (stderr, L"%s\n", _("memory exhausted"));
+ else
# endif
+ fprintf (stderr, "%s\n", _("memory exhausted"));
exit (obstack_exit_failure);
}