diff options
Diffstat (limited to 'usr/src/uts/intel/asm/bitmap.h')
| -rw-r--r-- | usr/src/uts/intel/asm/bitmap.h | 70 |
1 files changed, 26 insertions, 44 deletions
diff --git a/usr/src/uts/intel/asm/bitmap.h b/usr/src/uts/intel/asm/bitmap.h index c72f52a8e7..6148277085 100644 --- a/usr/src/uts/intel/asm/bitmap.h +++ b/usr/src/uts/intel/asm/bitmap.h @@ -22,6 +22,7 @@ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. + * Copyright 2014 Nexenta Systems, Inc. All rights reserved. */ #ifndef _ASM_BITMAP_H @@ -36,79 +37,60 @@ extern "C" { #if !defined(__lint) && defined(__GNUC__) +#if defined(__amd64) +#define __SUF "q" +#elif defined(__i386) +#define __SUF "l" +#else +#error "port me" +#endif + extern __GNU_INLINE int highbit(ulong_t i) { - long __value = -1l; + long value = -1l; -#if defined(__amd64) - __asm__( - "bsrq %1,%0" - : "+r" (__value) - : "r" (i) - : "cc"); -#elif defined(__i386) __asm__( - "bsrl %1,%0" - : "+r" (__value) + "bsr" __SUF " %1,%0" + : "+r" (value) : "r" (i) : "cc"); -#else -#error "port me" -#endif - return ((int)(__value + 1)); + + return ((int)(value + 1)); } extern __GNU_INLINE int lowbit(ulong_t i) { - long __value = -1l; + long value = -1l; -#if defined(__amd64) - __asm__( - "bsfq %1,%0" - : "+r" (__value) - : "r" (i) - : "cc"); -#elif defined(__i386) __asm__( - "bsfl %1,%0" - : "+r" (__value) + "bsf" __SUF " %1,%0" + : "+r" (value) : "r" (i) : "cc"); -#else -#error "port me" -#endif - return ((int)(__value + 1)); + + return ((int)(value + 1)); } extern __GNU_INLINE uint_t atomic_btr32(uint32_t *memory, uint_t bitnum) { - uint8_t __value; + uint8_t value; -#if defined(__amd64) - __asm__ __volatile__( - "lock;" - "btrl %2, (%0);" - "setc %1" - : "+r" (memory), "+r" (__value) - : "ir" (bitnum) - : "cc"); -#elif defined(__i386) __asm__ __volatile__( "lock;" - "btrl %2, (%0);" + "btrl %2,%0;" "setc %1" - : "+r" (memory), "=r" (__value) + : "+m" (*memory), "=r" (value) : "ir" (bitnum) : "cc"); -#else -#error "port me" -#endif - return ((uint_t)__value); + + return ((uint_t)value); } +#undef __SUF + #endif /* !__lint && __GNUC__ */ #ifdef __cplusplus |