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/*
* ====================================================
* Copyright (C) 1998 by Cygnus Solutions. All rights reserved.
*
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#include "i386mach.h"
.global SYM (memcpy)
SYM (memcpy):
pushl ebp
movl esp,ebp
subl $16,esp
pushl edi
pushl esi
movl 8(ebp),edi
movl 12(ebp),esi
movl 16(ebp),ecx
cld
#ifndef __OPTIMIZE_SIZE__
/* if aligned on long boundary, move doublewords at a time first */
movl edi,eax
orl esi,eax
testb $3,al
jne BYTEMOVE
shrl $2,ecx
rep
movsl
/* calculate any remainder bytes after moving doublewords */
movl 16(ebp),ecx
andl $3,ecx
#endif /* not __OPTIMIZE_SIZE__ */
/* move any unaligned bytes or remainder bytes, one at a time */
BYTEMOVE:
rep
movsb
/* return destination address */
movl 8(ebp),eax
leal -24(ebp),esp
popl esi
popl edi
leave
ret
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