diff options
Diffstat (limited to 'arch/sh/include/asm/bitops.h')
| -rw-r--r-- | arch/sh/include/asm/bitops.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h new file mode 100644 index 0000000000..10ceb0d6b5 --- /dev/null +++ b/arch/sh/include/asm/bitops.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_SH_BITOPS_H +#define __ASM_SH_BITOPS_H + +#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 + +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; +} + +#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/ext2-atomic.h> +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> + +#include <asm-generic/bitops/le.h> + +#endif /* __ASM_SH_BITOPS_H */ |