summaryrefslogtreecommitdiffstats
path: root/src/include/util/align.H
blob: f951b7ce9ad5b064688ceafee6c0184b37d4a78f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: src/include/util/align.H $                                    */
/*                                                                        */
/* IBM CONFIDENTIAL                                                       */
/*                                                                        */
/* COPYRIGHT International Business Machines Corp. 2011,2013              */
/*                                                                        */
/* p1                                                                     */
/*                                                                        */
/* Object Code Only (OCO) source materials                                */
/* Licensed Internal Code Source Materials                                */
/* IBM HostBoot Licensed Internal Code                                    */
/*                                                                        */
/* The source code for this program is not published or otherwise         */
/* divested of its trade secrets, irrespective of what has been           */
/* deposited with the U.S. Copyright Office.                              */
/*                                                                        */
/* Origin: 30                                                             */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
#ifndef __UTIL_ALIGN_H
#define __UTIL_ALIGN_H

#include <limits.h>

// Return a number >= input that is aligned up to the next 4-byte boundary
#define ALIGN_4(u) (((u) + 0x3ull) & ~0x3ull)

// Return a number <= input that is rounded down to nearest 4-byte boundary
#define ALIGN_DOWN_4(u) ((u) & ~3ull)

// Return a number >= input that is aligned up to the next 8-byte bounday
#define ALIGN_8(u) (((u) + 0x7ull) & ~0x7ull)

// Return a number <= input that is rounded down to nearest 8-byte boundary
#define ALIGN_DOWN_8(u) ((u) & ~7ull)

// Return a number >= input that is aligned up to the next page boundary
#define ALIGN_PAGE(u) (((u) + (PAGESIZE-1)) & ~(PAGESIZE-1))

// Return a number <= input that is aligned on a page boundary
#define ALIGN_PAGE_DOWN(u) ((u) - (u)%PAGESIZE)

// Return a number >= input that is aligned up to the next MB boundary
#define ALIGN_MEGABYTE(u) (((u) + (MEGABYTE-1)) & ~(MEGABYTE-1))

// Return a number <= input that is aligned on a MB boundary
#define ALIGN_MEGABYTE_DOWN(u) ((u) - (u)%MEGABYTE)


#endif
OpenPOWER on IntegriCloud