blob: d8f2423d30eeb5949694077e06e3d6bfcbe8d907 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
/* $NetBSD: Ovfork.S,v 1.4 2002/07/30 06:07:59 matt Exp $ */
/*
* pid = vfork();
*
* r4 == 0 in parent process, 1 in child process.
* r3 == pid of child in parent, pid of parent in child.
*/
#include "SYS.h"
WARN_REFERENCES(vfork, \
"warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
SYSCALL(vfork)
addi %r4,%r4,-1 # from 1 to 0 in child, 0 to -1 in parent
and %r3,%r3,%r4 # return 0 in child, pid in parent
blr
|