diff options
Diffstat (limited to 'contrib/syslinux-4.02/com32/include/syslinux/align.h')
-rw-r--r-- | contrib/syslinux-4.02/com32/include/syslinux/align.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/include/syslinux/align.h b/contrib/syslinux-4.02/com32/include/syslinux/align.h new file mode 100644 index 0000000..81df97f --- /dev/null +++ b/contrib/syslinux-4.02/com32/include/syslinux/align.h @@ -0,0 +1,48 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Intel Corporation; author H. Peter Anvin + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall + * be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * ----------------------------------------------------------------------- */ + +#ifndef _SYSLINUX_ALIGN_H +#define _SYSLINUX_ALIGN_H + +#include <stdint.h> + +static inline uintptr_t __align_down(uintptr_t __p, uintptr_t __a) +{ + return __p & ~(__a - 1); +} + +static inline uintptr_t __align_up(uintptr_t __p, uintptr_t __a) +{ + return (__p + __a - 1) & ~(__a - 1); +} + +#define ALIGN_UP(p,a) ((__typeof__(p))__align_up((uintptr_t)(p), (a))) +#define ALIGN_DOWN(p,a) ((__typeof__(p))__align_down((uintptr_t)(p), (a))) +#define ALIGN_UP_FOR(p,t) ALIGN_UP(p,sizeof(t)) +#define ALIGN_DOWN_FOR(p,t) ALIGN_DOWN(p,sizeof(t)) + +#endif /* _SYSLINUX_ALIGN_H */ |