1 TEXT strlen(SB),$0 2 3 MOVL $0, AX 4 MOVQ $-1, CX 5 CLD 6/* 7 * look for end of string 8 */ 9 10 MOVQ RARG, DI 11 REPN; SCASB 12 13 MOVQ DI, AX 14 SUBQ RARG, AX 15 SUBQ $1, AX 16 RET 17