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__vfork14.S revision 1.2
      1 /*	$NetBSD: __vfork14.S,v 1.2 1998/05/25 15:28:02 ws Exp $	*/
      2 
      3 /*
      4  * pid = vfork();
      5  *
      6  * r4 == 0 in parent process, 1 in child process.
      7  * r3 == pid of child in parent, pid of parent in child.
      8  */
      9 
     10 #include "SYS.h"
     11 
     12 SYSCALL(__vfork14)
     13 	addi	4,4,-1		# from 1 to 0 in child, 0 to -1 in parent
     14 	and	3,3,4		# return 0 in child, pid in parent
     15 	blr
     16