/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_BITS_H#define __LINUX_BITS_H #include <linux/const.h>#include <vdso/bits.h>#include <asm/bitsperlong.h> #define BIT_ULL(nr)		(ULL(1) << (nr))#define BIT_MASK(nr)		(UL(1) << ((nr) % BITS_PER_LONG))#define BIT_WORD(nr)		((nr) / BITS_PER_LONG)#define BIT_ULL_MASK(nr)	(ULL(1) << ((nr) % BITS_PER_LONG_LONG))#define BIT_ULL_WORD(nr)	((nr) / BITS_PER_LONG_LONG)#define BITS_PER_BYTE		8 /* * Create a contiguous bitmask starting at bit position @l and ending at * position @h. For example * GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000. */#if !defined(__ASSEMBLY__) && \	(!defined(CONFIG_CC_IS_GCC) || CONFIG_GCC_VERSION >= 49000)#include <linux/build_bug.h>#define GENMASK_INPUT_CHECK(h, l) \	(BUILD_BUG_ON_ZERO(__builtin_choose_expr( \		__builtin_constant_p((l) > (h)), (l) > (h), 0)))#else/* * BUILD_BUG_ON_ZERO is not available in h files included from asm files, * disable the input check if that is the case. */#define GENMASK_INPUT_CHECK(h, l) 0#endif #define __GENMASK(h, l) \	(((~UL(0)) - (UL(1) << (l)) + 1) & \	 (~UL(0) >> (BITS_PER_LONG - 1 - (h))))#define GENMASK(h, l) \	(GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) #define __GENMASK_ULL(h, l) \	(((~ULL(0)) - (ULL(1) << (l)) + 1) & \	 (~ULL(0) >> (BITS_PER_LONG_LONG - 1 - (h))))#define GENMASK_ULL(h, l) \	(GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) #endif	/* __LINUX_BITS_H */