diff options
Diffstat (limited to 'dxr3memcpy.c')
| -rw-r--r-- | dxr3memcpy.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/dxr3memcpy.c b/dxr3memcpy.c index b274bab..06dd134 100644 --- a/dxr3memcpy.c +++ b/dxr3memcpy.c @@ -40,6 +40,9 @@ void *(* dxr3_memcpy)(void *to, const void *from, size_t len); #if defined(ARCH_X86) || defined(ARCH_X86_64) // ================================== // for small memory blocks (<256 bytes) this version is faster +#define small_memcpy(to,from,n) { register unsigned long int dummy; __asm__ __volatile__("rep; movsb":"=&D"(to), "=&S"(from), "=&c"(dummy) :"0" (to), "1" (from),"2" (n) : "memory"); } +/* +// -- dosn't compile with 2.95 gcc -- #define small_memcpy(to,from,n)\ {\ register unsigned long int dummy;\ @@ -49,7 +52,7 @@ __asm__ __volatile__(\ :"0" (to), "1" (from),"2" (n)\ : "memory");\ } - +*/ // ================================== // linux kernel __memcpy (from: /include/asm/string.h) static __inline__ void * __memcpy ( |