ADD file via upload

master
pumnflqv2 3 years ago
parent 483736c7a8
commit ddfe2b83ca

@ -0,0 +1,15 @@
/*
* NOTE!!! memcpy(dest,src,n) assumes ds=es=normal data segment. This
* goes for all kernel functions (ds=es=kernel space, fs=local data,
* gs=null), as well as for all well-behaving user programs (ds=es=
* user data space). This is NOT a bug, as any user program that changes
* es deserves to die if it isn't careful.
*/
#define memcpy(dest,src,n) ({ \
void * _res = dest; \
__asm__ ("cld;rep;movsb" \
::"D" ((long)(_res)),"S" ((long)(src)),"c" ((long) (n)) \
); \
_res; \
})
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