ref: 9782a0980f5fd5fff080a8e73fce38173705f58c 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