UNIX 6th Ed. - /usr/source/s3/dpadd.s

   1: / C library -- signed dp add
   2: 
   3: / dpadd(l, i)
   4: /	int l[2];
   5: / l =+ i;
   6: 
   7: .globl  _dpadd
   8: 
   9: _dpadd:
  10:         mov     r5,-(sp)
  11:         mov     sp,r5
  12:         mov     4(r5),r0
  13:         tst     6(r5)
  14:         sxt     r1
  15:         add     r1,(r0)+
  16:         add     6(r5),(r0)
  17:         adc     -(r0)
  18:         mov     (sp)+,r5
  19:         rts     pc

Defined functions