ref: 2153eb179c21589a991625acba967c69aad1e5d9
dir: /sys/src/ape/lib/ap/68020/strcat.s/
TEXT strcat(SB), $0 MOVL s1+0(FP), A2 MOVL s2+4(FP), A1 l1: TSTB (A2)+ BNE l1 MOVB (A1)+, -1(A2) BEQ done l2: MOVB (A1)+, (A2)+ BNE l2 done: MOVL s1+0(FP), R0 RTS