Initial revision

lib/i86/string/memcpy.s

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+!	memcpy()					Author: Kees J. Bot
+!								27 Jan 1994
+.sect .text; .sect .rom; .sect .data; .sect .bss
+
+! void *memcpy(void *s1, const void *s2, size_t n)
+!	Copy a chunk of memory.
+!	This routine need not handle overlap, so it does not handle overlap.
+!	One could simply call __memmove, the cost of the overlap check is
+!	negligible, but you are dealing with a programmer who believes that
+!	if anything can go wrong, it should go wrong.
+!
+.sect .text
+.define _memcpy
+_memcpy:
+	push	bp
+	mov	bp, sp
+	push	si
+	push	di
+	mov	di, 4(bp)	! String s1
+	mov	si, 6(bp)	! String s2
+	mov	cx, 8(bp)	! Length
+	! No overlap check here
+	jmp	__memcpy	! Call the part of __memmove that copies up