diff options
Diffstat (limited to 'include/uapi/linux/bits.h')
| -rw-r--r-- | include/uapi/linux/bits.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/uapi/linux/bits.h b/include/uapi/linux/bits.h new file mode 100644 index 000000000000..682b406e1067 --- /dev/null +++ b/include/uapi/linux/bits.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* bits.h: Macros for dealing with bitmasks. */ + +#ifndef _UAPI_LINUX_BITS_H +#define _UAPI_LINUX_BITS_H + +#define __GENMASK(h, l) (((~_UL(0)) << (l)) & (~_UL(0) >> (BITS_PER_LONG - 1 - (h)))) + +#define __GENMASK_ULL(h, l) (((~_ULL(0)) << (l)) & (~_ULL(0) >> (BITS_PER_LONG_LONG - 1 - (h)))) + +#define __GENMASK_U128(h, l) \ + ((_BIT128((h)) << 1) - (_BIT128(l))) + +#endif /* _UAPI_LINUX_BITS_H */ |