/* SPDX-License-Identifier: GPL-2.0 */#ifndef _TOOLS_LINUX_BITOPS_H_#define _TOOLS_LINUX_BITOPS_H_ #include <asm/types.h>#include <limits.h>#ifndef __WORDSIZE#define __WORDSIZE (__SIZEOF_LONG__ * 8)#endif #ifndef BITS_PER_LONG# define BITS_PER_LONG __WORDSIZE#endif#include <linux/bits.h>#include <linux/compiler.h> #define BITS_PER_TYPE(type)	(sizeof(type) * BITS_PER_BYTE)#define BITS_TO_LONGS(nr)	DIV_ROUND_UP(nr, BITS_PER_TYPE(long))#define BITS_TO_U64(nr)		DIV_ROUND_UP(nr, BITS_PER_TYPE(u64))#define BITS_TO_U32(nr)		DIV_ROUND_UP(nr, BITS_PER_TYPE(u32))#define BITS_TO_BYTES(nr)	DIV_ROUND_UP(nr, BITS_PER_TYPE(char)) extern unsigned int __sw_hweight8(unsigned int w);extern unsigned int __sw_hweight16(unsigned int w);extern unsigned int __sw_hweight32(unsigned int w);extern unsigned long __sw_hweight64(__u64 w); /* * Defined here because those may be needed by architecture-specific static * inlines. */ #define bitop(op, nr, addr)						\	op(nr, addr) #define __set_bit(nr, addr)		bitop(___set_bit, nr, addr)#define __clear_bit(nr, addr)		bitop(___clear_bit, nr, addr)#define __change_bit(nr, addr)		bitop(___change_bit, nr, addr)#define __test_and_set_bit(nr, addr)	bitop(___test_and_set_bit, nr, addr)#define __test_and_clear_bit(nr, addr)	bitop(___test_and_clear_bit, nr, addr)#define __test_and_change_bit(nr, addr)	bitop(___test_and_change_bit, nr, addr)#define test_bit(nr, addr)		bitop(_test_bit, nr, addr) /* * Include this here because some architectures need generic_ffs/fls in * scope * * XXX: this needs to be asm/bitops.h, when we get to per arch optimizations */#include <asm-generic/bitops.h> #define for_each_set_bit(bit, addr, size) \	for ((bit) = find_first_bit((addr), (size));		\	     (bit) < (size);					\	     (bit) = find_next_bit((addr), (size), (bit) + 1)) #define for_each_clear_bit(bit, addr, size) \	for ((bit) = find_first_zero_bit((addr), (size));       \	     (bit) < (size);                                    \	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1)) /* same as for_each_set_bit() but use bit as value to start with */#define for_each_set_bit_from(bit, addr, size) \	for ((bit) = find_next_bit((addr), (size), (bit));	\	     (bit) < (size);					\	     (bit) = find_next_bit((addr), (size), (bit) + 1)) static inline unsigned long hweight_long(unsigned long w){	return sizeof(w) == 4 ? hweight32(w) : hweight64(w);} static inline unsigned fls_long(unsigned long l){	if (sizeof(l) == 4)		return fls(l);	return fls64(l);} /** * rol32 - rotate a 32-bit value left * @word: value to rotate * @shift: bits to roll */static inline __u32 rol32(__u32 word, unsigned int shift){	return (word << shift) | (word >> ((-shift) & 31));} /** * sign_extend64 - sign extend a 64-bit value using specified bit as sign-bit * @value: value to sign extend * @index: 0 based bit index (0<=index<64) to sign bit */static __always_inline __s64 sign_extend64(__u64 value, int index){	__u8 shift = 63 - index;	return (__s64)(value << shift) >> shift;} #endif