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authorJing Yu <jingyu@google.com>2009-11-05 15:11:04 -0800
committerJing Yu <jingyu@google.com>2009-11-05 15:11:04 -0800
commitdf62c1c110e8532b995b23540b7e3695729c0779 (patch)
treedbbd4cbdb50ac38011e058a2533ee4c3168b0205 /gcc-4.4.0/gcc/config/i386/gmm_malloc.h
parent8d401cf711539af5a2f78d12447341d774892618 (diff)
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Check in gcc sources for prebuilt toolchains in Eclair.
Diffstat (limited to 'gcc-4.4.0/gcc/config/i386/gmm_malloc.h')
-rw-r--r--gcc-4.4.0/gcc/config/i386/gmm_malloc.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/gcc-4.4.0/gcc/config/i386/gmm_malloc.h b/gcc-4.4.0/gcc/config/i386/gmm_malloc.h
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+/* Copyright (C) 2004, 2009 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC 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 3, or (at your option)
+ any later version.
+
+ GCC 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.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _MM_MALLOC_H_INCLUDED
+#define _MM_MALLOC_H_INCLUDED
+
+#include <stdlib.h>
+#include <errno.h>
+
+static __inline__ void*
+_mm_malloc (size_t size, size_t align)
+{
+ void * malloc_ptr;
+ void * aligned_ptr;
+
+ /* Error if align is not a power of two. */
+ if (align & (align - 1))
+ {
+ errno = EINVAL;
+ return ((void*) 0);
+ }
+
+ if (size == 0)
+ return ((void *) 0);
+
+ /* Assume malloc'd pointer is aligned at least to sizeof (void*).
+ If necessary, add another sizeof (void*) to store the value
+ returned by malloc. Effectively this enforces a minimum alignment
+ of sizeof double. */
+ if (align < 2 * sizeof (void *))
+ align = 2 * sizeof (void *);
+
+ malloc_ptr = malloc (size + align);
+ if (!malloc_ptr)
+ return ((void *) 0);
+
+ /* Align We have at least sizeof (void *) space below malloc'd ptr. */
+ aligned_ptr = (void *) (((size_t) malloc_ptr + align)
+ & ~((size_t) (align) - 1));
+
+ /* Store the original pointer just before p. */
+ ((void **) aligned_ptr) [-1] = malloc_ptr;
+
+ return aligned_ptr;
+}
+
+static __inline__ void
+_mm_free (void * aligned_ptr)
+{
+ if (aligned_ptr)
+ free (((void **) aligned_ptr) [-1]);
+}
+
+#endif /* _MM_MALLOC_H_INCLUDED */