kvisc/ka/crt/mem/memcpy.k

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; The OS/K Team licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.
;
; void memcpy(void *, const void *, int)
;
memcpy:
mov rcx, ax2
ret.cxz
.l:
sub rdx, ax2, rcx
mov b[ax0+rdx], b[ax1+rdx]
loop .l
ret