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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_SH_BITOPS_H #define __ASM_SH_BITOPS_H #ifdef __KERNEL__ #ifndef _LINUX_BITOPS_H #error only <linux/bitops.h> can be included directly #endif /* For __swab32 */ #include <asm/byteorder.h> #include <asm/barrier.h> #ifdef CONFIG_GUSA_RB #include <asm/bitops-grb.h> #elif defined(CONFIG_CPU_SH2A) #include <asm-generic/bitops/atomic.h> #include <asm/bitops-op32.h> #elif defined(CONFIG_CPU_SH4A) #include <asm/bitops-llsc.h> #elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) #include <asm/bitops-cas.h> #else #include <asm-generic/bitops/atomic.h> #include <asm-generic/bitops/non-atomic.h> #endif #ifdef CONFIG_SUPERH32 static inline unsigned long ffz(unsigned long word) { unsigned long result; __asm__("1:\n\t" "shlr %1\n\t" "bt/s 1b\n\t" " add #1, %0" : "=r" (result), "=r" (word) : "0" (~0L), "1" (word) : "t"); return result; } /** * __ffs - find first bit in word. * @word: The word to search * * Undefined if no bit exists, so code should check against 0 first. */ static inline unsigned long __ffs(unsigned long word) { unsigned long result; __asm__("1:\n\t" "shlr %1\n\t" "bf/s 1b\n\t" " add #1, %0" : "=r" (result), "=r" (word) : "0" (~0L), "1" (word) : "t"); return result; } #else static inline unsigned long ffz(unsigned long word) { unsigned long result, __d2, __d3; __asm__("gettr tr0, %2\n\t" "pta $+32, tr0\n\t" "andi %1, 1, %3\n\t" "beq %3, r63, tr0\n\t" "pta $+4, tr0\n" "0:\n\t" "shlri.l %1, 1, %1\n\t" "addi %0, 1, %0\n\t" "andi %1, 1, %3\n\t" "beqi %3, 1, tr0\n" "1:\n\t" "ptabs %2, tr0\n\t" : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3) : "0" (0L), "1" (word)); return result; } #include <asm-generic/bitops/__ffs.h> #endif #include <asm-generic/bitops/find.h> #include <asm-generic/bitops/ffs.h> #include <asm-generic/bitops/hweight.h> #include <asm-generic/bitops/lock.h> #include <asm-generic/bitops/sched.h> #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic.h> #include <asm-generic/bitops/fls.h> #include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/fls64.h> #endif /* __KERNEL__ */ #endif /* __ASM_SH_BITOPS_H */
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