1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_SH_BITOPS_H 3 #define __ASM_SH_BITOPS_H 4 5 #ifdef __KERNEL__ 6 7 #ifndef _LINUX_BITOPS_H 8 #error only <linux/bitops.h> can be included directly 9 #endif 10 11 /* For __swab32 */ 12 #include <asm/byteorder.h> 13 #include <asm/barrier.h> 14 15 #ifdef CONFIG_GUSA_RB 16 #include <asm/bitops-grb.h> 17 #elif defined(CONFIG_CPU_SH2A) 18 #include <asm-generic/bitops/atomic.h> 19 #include <asm/bitops-op32.h> 20 #elif defined(CONFIG_CPU_SH4A) 21 #include <asm/bitops-llsc.h> 22 #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) 23 #include <asm/bitops-cas.h> 24 #else 25 #include <asm-generic/bitops/atomic.h> 26 #include <asm-generic/bitops/non-atomic.h> 27 #endif 28 29 #ifdef CONFIG_SUPERH32 30 static inline unsigned long ffz(unsigned long word) 31 { 32 unsigned long result; 33 34 __asm__("1:\n\t" 35 "shlr %1\n\t" 36 "bt/s 1b\n\t" 37 " add #1, %0" 38 : "=r" (result), "=r" (word) 39 : "0" (~0L), "1" (word) 40 : "t"); 41 return result; 42 } 43 44 /** 45 * __ffs - find first bit in word. 46 * @word: The word to search 47 * 48 * Undefined if no bit exists, so code should check against 0 first. 49 */ 50 static inline unsigned long __ffs(unsigned long word) 51 { 52 unsigned long result; 53 54 __asm__("1:\n\t" 55 "shlr %1\n\t" 56 "bf/s 1b\n\t" 57 " add #1, %0" 58 : "=r" (result), "=r" (word) 59 : "0" (~0L), "1" (word) 60 : "t"); 61 return result; 62 } 63 #else 64 static inline unsigned long ffz(unsigned long word) 65 { 66 unsigned long result, __d2, __d3; 67 68 __asm__("gettr tr0, %2\n\t" 69 "pta $+32, tr0\n\t" 70 "andi %1, 1, %3\n\t" 71 "beq %3, r63, tr0\n\t" 72 "pta $+4, tr0\n" 73 "0:\n\t" 74 "shlri.l %1, 1, %1\n\t" 75 "addi %0, 1, %0\n\t" 76 "andi %1, 1, %3\n\t" 77 "beqi %3, 1, tr0\n" 78 "1:\n\t" 79 "ptabs %2, tr0\n\t" 80 : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) 81 : "0" (0L), "1" (word)); 82 83 return result; 84 } 85 86 #include <asm-generic/bitops/__ffs.h> 87 #endif 88 89 #include <asm-generic/bitops/find.h> 90 #include <asm-generic/bitops/ffs.h> 91 #include <asm-generic/bitops/hweight.h> 92 #include <asm-generic/bitops/lock.h> 93 #include <asm-generic/bitops/sched.h> 94 #include <asm-generic/bitops/le.h> 95 #include <asm-generic/bitops/ext2-atomic.h> 96 #include <asm-generic/bitops/fls.h> 97 #include <asm-generic/bitops/__fls.h> 98 #include <asm-generic/bitops/fls64.h> 99 100 #endif /* __KERNEL__ */ 101 102 #endif /* __ASM_SH_BITOPS_H */ 103