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

   1: / error	= nice(incr);
   2: 
   3: .globl  _nice,
   4: .globl  cerror
   5: 
   6: _nice:
   7:         mov     r5,-(sp)
   8:         mov     sp,r5
   9:         mov     4(sp),r0
  10:         sys     nice
  11:         bec     1f
  12:         jmp     cerror
  13: 1:
  14:         clr     r0
  15:         mov     (sp)+,r5
  16:         rts     pc

Defined functions