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

   1: / error	= ptrace(request, pid, addr, data);
   2: /	  int *addr;
   3: 
   4: .globl  _ptrace
   5: .globl  cerror, _errno
   6: 
   7: _ptrace:
   8:         mov     r5,-(sp)
   9:         mov     sp,r5
  10:         mov     4.(r5),0f+4
  11:         mov     6.(r5),0f+0
  12:         mov     8.(r5),0f+2
  13:         mov     10.(r5),r0
  14:         clr     _errno
  15:         sys     indir; 9f
  16:         bec     1f
  17:         jmp     cerror
  18: 1:
  19:         mov     (sp)+,r5
  20:         rts     pc
  21: 
  22: .data
  23: 9:
  24:         sys     ptrace; 0: .=.+6

Defined functions