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

   1: / error	= phys(segreg, size, physadr);
   2: 
   3: .globl  _phys, cerror
   4: 
   5: _phys:
   6:         mov     r5,-(sp)
   7:         mov     sp,r5
   8:         mov     4(r5),0f
   9:         mov     6(r5),0f+2
  10:         mov     8(r5),0f+4
  11:         sys     0; 9f
  12:         bec     1f
  13:         jmp     cerror
  14: 1:
  15:         mov     (sp)+,r5
  16:         rts     pc
  17: 
  18: .data
  19: 9:
  20:         sys     phys; 0: ..; ..; ..

Defined functions