1: / C library -- gtty 2: 3: / error = gtty(filep, ttyvec); 4: 5: / filep is descriptor of open tty 6: / ttyvec[0, 1, 2] correspond to args of gtty 7: 8: .globl _gtty, cerror 9: 10: _gtty: 11: mov r5,-(sp) 12: mov sp,r5 13: mov 4(r5),r0 14: mov 6(r5),0f 15: sys 0; 9f 16: bec 1f 17: jmp cerror 18: 1: 19: clr r0 20: mov (sp)+,r5 21: rts pc 22: .data 23: 9: 24: sys gtty; 0:..