From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/sh/include/asm/bitops.h | 104 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 arch/sh/include/asm/bitops.h (limited to 'arch/sh/include/asm/bitops.h') diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h new file mode 100644 index 00000000..ea8706d9 --- /dev/null +++ b/arch/sh/include/asm/bitops.h @@ -0,0 +1,104 @@ +#ifndef __ASM_SH_BITOPS_H +#define __ASM_SH_BITOPS_H + +#ifdef __KERNEL__ + +#ifndef _LINUX_BITOPS_H +#error only can be included directly +#endif + +/* For __swab32 */ +#include + +#ifdef CONFIG_GUSA_RB +#include +#elif defined(CONFIG_CPU_SH2A) +#include +#include +#elif defined(CONFIG_CPU_SH4A) +#include +#else +#include +#include +#endif + +/* + * clear_bit() doesn't provide any barrier for the compiler. + */ +#define smp_mb__before_clear_bit() smp_mb() +#define smp_mb__after_clear_bit() smp_mb() + +#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 +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#endif /* __KERNEL__ */ + +#endif /* __ASM_SH_BITOPS_H */ -- cgit