1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef __ASM_CSKY_BITOPS_H 4 #define __ASM_CSKY_BITOPS_H 5 6 #include <linux/compiler.h> 7 #include <asm/barrier.h> 8 9 /* 10 * asm-generic/bitops/ffs.h 11 */ ffs(int x)12static inline int ffs(int x) 13 { 14 if (!x) 15 return 0; 16 17 asm volatile ( 18 "brev %0\n" 19 "ff1 %0\n" 20 "addi %0, 1\n" 21 : "=&r"(x) 22 : "0"(x)); 23 return x; 24 } 25 26 /* 27 * asm-generic/bitops/__ffs.h 28 */ __ffs(unsigned long x)29static __always_inline unsigned long __ffs(unsigned long x) 30 { 31 asm volatile ( 32 "brev %0\n" 33 "ff1 %0\n" 34 : "=&r"(x) 35 : "0"(x)); 36 return x; 37 } 38 39 /* 40 * asm-generic/bitops/fls.h 41 */ fls(unsigned int x)42static __always_inline int fls(unsigned int x) 43 { 44 asm volatile( 45 "ff1 %0\n" 46 : "=&r"(x) 47 : "0"(x)); 48 49 return (32 - x); 50 } 51 52 /* 53 * asm-generic/bitops/__fls.h 54 */ __fls(unsigned long x)55static __always_inline unsigned long __fls(unsigned long x) 56 { 57 return fls(x) - 1; 58 } 59 60 #include <asm-generic/bitops/ffz.h> 61 #include <asm-generic/bitops/fls64.h> 62 63 #ifndef _LINUX_BITOPS_H 64 #error only <linux/bitops.h> can be included directly 65 #endif 66 67 #include <asm-generic/bitops/sched.h> 68 #include <asm-generic/bitops/hweight.h> 69 #include <asm-generic/bitops/lock.h> 70 #include <asm-generic/bitops/atomic.h> 71 72 /* 73 * bug fix, why only could use atomic!!!! 74 */ 75 #include <asm-generic/bitops/non-atomic.h> 76 77 #include <asm-generic/bitops/le.h> 78 #include <asm-generic/bitops/ext2-atomic.h> 79 #endif /* __ASM_CSKY_BITOPS_H */ 80