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fork.S revision 1.2 
      1  1.2       ws /*	$NetBSD: fork.S,v 1.2 1998/05/25 15:28:03 ws Exp $	*/
      2  1.1  thorpej 
      3  1.1  thorpej /*
      4  1.1  thorpej  * pid = fork();
      5  1.1  thorpej  *
      6  1.1  thorpej  * r4 == 0 in parent process, 1 in child process.
      7  1.1  thorpej  * r3 == pid of child in parent, pid of parent in child.
      8  1.1  thorpej  */
      9  1.1  thorpej 
     10  1.1  thorpej #include "SYS.h"
     11  1.1  thorpej 
     12  1.1  thorpej SYSCALL(fork)
     13  1.1  thorpej 	addi	4,4,-1		# from 1 to 0 in child, 0 to -1 in parent
     14  1.1  thorpej 	and	3,3,4		# return 0 in child, pid in parent
     15  1.1  thorpej 	blr
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