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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

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   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.  */

#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 */