1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_SH_BITOPS_H 3 #define __ASM_SH_BITOPS_H 4 5 #ifndef _LINUX_BITOPS_H 6 #error only <linux/bitops.h> can be included directly 7 #endif 8 9 /* For __swab32 */ 10 #include <asm/byteorder.h> 11 #include <asm/barrier.h> 12 13 #ifdef CONFIG_GUSA_RB 14 #include <asm/bitops-grb.h> 15 #elif defined(CONFIG_CPU_SH2A) 16 #include <asm-generic/bitops/atomic.h> 17 #include <asm/bitops-op32.h> 18 #elif defined(CONFIG_CPU_SH4A) 19 #include <asm/bitops-llsc.h> 20 #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) 21 #include <asm/bitops-cas.h> 22 #else 23 #include <asm-generic/bitops/atomic.h> 24 #include <asm-generic/bitops/non-atomic.h> 25 #endif 26 27 static inline unsigned long ffz(unsigned long word) 28 { 29 unsigned long result; 30 31 __asm__("1:\n\t" 32 "shlr %1\n\t" 33 "bt/s 1b\n\t" 34 " add #1, %0" 35 : "=r" (result), "=r" (word) 36 : "0" (~0L), "1" (word) 37 : "t"); 38 return result; 39 } 40 41 /** 42 * __ffs - find first bit in word. 43 * @word: The word to search 44 * 45 * Undefined if no bit exists, so code should check against 0 first. 46 */ 47 static inline unsigned long __ffs(unsigned long word) 48 { 49 unsigned long result; 50 51 __asm__("1:\n\t" 52 "shlr %1\n\t" 53 "bf/s 1b\n\t" 54 " add #1, %0" 55 : "=r" (result), "=r" (word) 56 : "0" (~0L), "1" (word) 57 : "t"); 58 return result; 59 } 60 61 #include <asm-generic/bitops/ffs.h> 62 #include <asm-generic/bitops/hweight.h> 63 #include <asm-generic/bitops/lock.h> 64 #include <asm-generic/bitops/sched.h> 65 #include <asm-generic/bitops/ext2-atomic.h> 66 #include <asm-generic/bitops/fls.h> 67 #include <asm-generic/bitops/__fls.h> 68 #include <asm-generic/bitops/fls64.h> 69 70 #include <asm-generic/bitops/le.h> 71 72 #endif /* __ASM_SH_BITOPS_H */ 73