diff options
Diffstat (limited to 'include/arch/x86_64/linux/bits.h')
| -rw-r--r-- | include/arch/x86_64/linux/bits.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/arch/x86_64/linux/bits.h b/include/arch/x86_64/linux/bits.h new file mode 100644 index 00000000..7c2f98e4 --- /dev/null +++ b/include/arch/x86_64/linux/bits.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* bits.h: Macros for dealing with bitmasks. */ + +#ifndef _LINUX_BITS_H +#define _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 /* _LINUX_BITS_H */ |