ref: f42e53655e9a2a1b516326f6522fba88db59a81c dir: /sys/src/ape/lib/ap/68020/strcpy.s/
TEXT strcpy(SB), $0 MOVL s1+0(FP), A2 MOVL s2+4(FP), A1 l1: MOVB (A1)+, (A2)+ BNE l1 MOVL s1+0(FP), R0 RTS