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/* SPDX-License-Identifier: GPL-2.0 */ // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. #ifndef __ASM_CSKY_BITOPS_H #define __ASM_CSKY_BITOPS_H #include <linux/compiler.h> #include <asm/barrier.h> /* * asm-generic/bitops/ffs.h */ static inline int ffs(int x) { if (!x) return 0; asm volatile ( "brev %0\n" "ff1 %0\n" "addi %0, 1\n" : "=&r"(x) : "0"(x)); return x; } /* * asm-generic/bitops/__ffs.h */ static __always_inline unsigned long __ffs(unsigned long x) { asm volatile ( "brev %0\n" "ff1 %0\n" : "=&r"(x) : "0"(x)); return x; } /* * asm-generic/bitops/fls.h */ static __always_inline int fls(unsigned int x) { asm volatile( "ff1 %0\n" : "=&r"(x) : "0"(x)); return (32 - x); } /* * asm-generic/bitops/__fls.h */ static __always_inline unsigned long __fls(unsigned long x) { return fls(x) - 1; } #include <asm-generic/bitops/ffz.h> #include <asm-generic/bitops/fls64.h> #include <asm-generic/bitops/find.h> #ifndef _LINUX_BITOPS_H #error only <linux/bitops.h> can be included directly #endif #include <asm-generic/bitops/sched.h> #include <asm-generic/bitops/hweight.h> #include <asm-generic/bitops/lock.h> #include <asm-generic/bitops/atomic.h> /* * bug fix, why only could use atomic!!!! */ #include <asm-generic/bitops/non-atomic.h> #define __clear_bit(nr, vaddr) clear_bit(nr, vaddr) #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic.h> #endif /* __ASM_CSKY_BITOPS_H */
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