1/*	$NetBSD: compat_Ovfork.S,v 1.2 2011/01/15 07:31:13 matt 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#if defined(LIBC_SCCS)
13__RCSID("$NetBSD: compat_Ovfork.S,v 1.2 2011/01/15 07:31:13 matt Exp $")
14#endif
15
16WARN_REFERENCES(vfork, \
17    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
18
19SYSCALL(vfork)
20	addi	%r4,%r4,-1	# from 1 to 0 in child, 0 to -1 in parent
21	and	%r3,%r3,%r4	# return 0 in child, pid in parent
22	blr
23END(vfork)
24