Subversion Repositories HelenOS

Rev

Rev 3022 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3022 Rev 4055
Line 24... Line 24...
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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
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.
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
27
 */
28
 
28
 
29
/** @addtogroup generic
29
/** @addtogroup generic
30
 * @ingroup others
30
 * @ingroup others
31
 * @{
31
 * @{
32
 */
32
 */
33
/**
33
/**
34
 * @file
34
 * @file
35
 * @brief   Macros for making values and addresses aligned.
35
 * @brief Macros for making values and addresses aligned.
36
 */
36
 */
37
 
37
 
38
#ifndef KERN_ALIGN_H_
38
#ifndef KERN_ALIGN_H_
39
#define KERN_ALIGN_H_
39
#define KERN_ALIGN_H_
40
 
40
 
41
/** Align to the nearest lower address.
41
/** Align to the nearest lower address.
42
 *
42
 *
43
 * @param s Address or size to be aligned.
43
 * @param s Address or size to be aligned.
44
 * @param a Size of alignment, must be power of 2.
44
 * @param a Size of alignment, must be power of 2.
45
 */
45
 */
46
#define ALIGN_DOWN(s, a)    ((s) & ~((a) - 1))
46
#define ALIGN_DOWN(s, a)  ((s) & ~((a) - 1))
47
 
47
 
48
 
48
 
49
/** Align to the nearest higher address.
49
/** Align to the nearest higher address.
50
 *
50
 *
51
 * @param s Address or size to be aligned.
51
 * @param s Address or size to be aligned.
52
 * @param a Size of alignment, must be power of 2.
52
 * @param a Size of alignment, must be power of 2.
53
 */
53
 */
54
#define ALIGN_UP(s, a)      (((s) + ((a) - 1)) & ~((a) - 1))
54
#define ALIGN_UP(s, a)  (((s) + ((a) - 1)) & ~((a) - 1))
55
 
55
 
56
#endif
56
#endif
57
 
57
 
58
/** @}
58
/** @}
59
 */
59
 */