diff options
| -rw-r--r-- | src/arch/x86/lib/memcpy.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/src/arch/x86/lib/memcpy.c b/src/arch/x86/lib/memcpy.c index de210928a3..f8607cfc50 100644 --- a/src/arch/x86/lib/memcpy.c +++ b/src/arch/x86/lib/memcpy.c @@ -1,13 +1,15 @@ #include <string.h> -void *memcpy(void *__restrict __dest, - __const void *__restrict __src, size_t __n) +void *memcpy(void *dest, const void *src, size_t n) { - asm("cld\n" - "rep\n" - "movsb" - : /* no input (?) */ - :"S"(__src), "D"(__dest), "c"(__n) - ); - return __dest; + unsigned long d0, d1, d2; + + asm volatile( + "rep movsb" + : "=S"(d0), "=D"(d1), "=c"(d2) + : "0"(src), "1"(dest), "2"(n) + : "memory" + ); + + return dest; } |