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| 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 | */ |