1 /* Copyright (C) 2004 Free Software Foundation, Inc.
3 This file is part of GCC.
5 GCC is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 GCC is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GCC; see the file COPYING. If not, write to
17 the Free Software Foundation, 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 /* As a special exception, if you include this header file into source
21 files compiled by GCC, this header file does not by itself cause
22 the resulting executable to be covered by the GNU General Public
23 License. This exception does not however invalidate any other
24 reasons why the executable file might be covered by the GNU General
27 #ifndef _MM_MALLOC_H_INCLUDED
28 #define _MM_MALLOC_H_INCLUDED
33 static __inline__
void*
34 _mm_malloc (size_t size
, size_t align
)
39 /* Error if align is not a power of two. */
40 if (align
& (align
- 1))
49 /* Assume malloc'd pointer is aligned at least to sizeof (void*).
50 If necesary, add another sizeof (void*) to store the value
51 returned by malloc. Effectively this enforces a minimum alignment
53 if (align
< 2 * sizeof (void *))
54 align
= 2 * sizeof (void *);
56 malloc_ptr
= malloc (size
+ align
);
60 /* Align We have at least sizeof (void *) space below malloc'd ptr. */
61 aligned_ptr
= (void *) (((size_t) malloc_ptr
+ align
)
62 & ~((size_t) (align
) - 1));
64 /* Store the original pointer just before p. */
65 ((void **) aligned_ptr
) [-1] = malloc_ptr
;
70 static __inline__
void
71 _mm_free (void * aligned_ptr
)
74 free (((void **) aligned_ptr
) [-1]);
77 #endif /* _MM_MALLOC_H_INCLUDED */