2.9BSD - /usr/src/lib/c/sys/setgrp.s

   1: / error	= setgrp(groups);
   2: /	  short	groups[NGRPS/(sizeof(short)*8)];
   3: 
   4: .globl  _setgrp
   5: .globl  cerror
   6: 
   7: _setgrp:
   8:         mov     r5,-(sp)
   9:         mov     sp,r5
  10:         mov     4(r5),0f
  11:         sys     0; 9f
  12:         bec     1f
  13:         jmp     cerror
  14: 1:
  15:         clr     r0
  16:         mov     (sp)+,r5
  17:         rts     pc
  18: .data
  19: 9:
  20:         sys     setgrp; 0:..

Defined functions