ref: 78eff200d85e0fc2f92622d221c0e3d81aaf9522 dir: /sys/src/libc/68000/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