source: rtems/bsps/sparc64/include/kernel/align.h

Last change on this file was 1964b268, checked in by Andreas Dachsberger <andreas.dachsberger@…>, on 04/02/19 at 10:30:22

doxygen: Added subgroup Generic to BSP->SPARC64

Update #3706.
  • Property mode set to 100644
File size: 2.0 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 *   notice, this list of conditions and the following disclaimer in the
13 *   documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 *   derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup RTEMSBSPsSPARC64Generic
30 * @ingroup others
31 * @{
32 */
33/**
34 * @file
35 * @brief Macros for making values and addresses aligned.
36 */
37
38#ifndef KERN_ALIGN_H_
39#define KERN_ALIGN_H_
40
41/** Align to the nearest lower address.
42 *
43 * @param s Address or size to be aligned.
44 * @param a Size of alignment, must be power of 2.
45 */
46#define ALIGN_DOWN(s, a)  ((s) & ~((a) - 1))
47
48
49/** Align to the nearest higher address.
50 *
51 * @param s Address or size to be aligned.
52 * @param a Size of alignment, must be power of 2.
53 */
54#define ALIGN_UP(s, a)  (((s) + ((a) - 1)) & ~((a) - 1))
55
56#endif
57
58/** @}
59 */
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