diff --git a/include/asm-i386/bitops.h b/include/asm-i386/bitops.h index 26eb9811712fe6ae6cfdbb527a3bc7e696dc88bb..65679aca4b2229ffb4e5b1781363ee8f10ef8efd 100644 --- a/include/asm-i386/bitops.h +++ b/include/asm-i386/bitops.h @@ -367,11 +367,6 @@ static inline unsigned long ffz(unsigned long word) return word; } -/* - * fls: find last bit set. - */ - -#define fls(x) generic_fls(x) #define fls64(x) generic_fls64(x) #ifdef __KERNEL__ @@ -414,6 +409,23 @@ static inline int ffs(int x) return r+1; } +/** + * fls - find last bit set + * @x: the word to search + * + * This is defined the same way as ffs. + */ +static inline int fls(int x) +{ + int r; + + __asm__("bsrl %1,%0\n\t" + "jnz 1f\n\t" + "movl $-1,%0\n" + "1:" : "=r" (r) : "rm" (x)); + return r+1; +} + /** * hweightN - returns the hamming weight of a N-bit word * @x: the word to weigh