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compel: plugins,std -- Implement generic std_memcpy

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The routine was #if0ed for a while (taken from older compel), now it's
time to provide any generic version.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Cyrill Gorcunov 2016-11-11 21:52:00 +03:00 committed by Andrei Vagin
parent 93d0494e3e
commit d9c284c3e9
1 changed files with 5 additions and 13 deletions
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18
compel/plugins/std/string.c
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@ -222,19 +222,11 @@ fin:
void *std_memcpy(void *to, const void *from, unsigned int n) void *std_memcpy(void *to, const void *from, unsigned int n)
{ {
/* FIXME: Per-arch support */ char *tmp = to;
#if 0 const char *s = from;
int d0, d1, d2;
asm volatile("rep ; movsl \n" while (n--)
"movl %4,%%ecx \n" *tmp++ = *s++;
"andl $3,%%ecx \n"
"jz 1f \n"
"rep ; movsb \n"
"1:"
: "=&c" (d0), "=&D" (d1), "=&S" (d2)
: "0" (n / 4), "g" (n), "1" ((long)to), "2" ((long)from)
: "memory");
#endif
return to; return to;
} }