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/* Copyright (C) 2004 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 2, 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you include this header file into source
files compiled by GCC, this header file does not by itself cause
the resulting executable to be covered by the GNU General Public
License. This exception does not however invalidate any other
reasons why the executable file might be covered by the GNU General
Public License. */
#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 */