35 lines
1.2 KiB
ArmAsm
35 lines
1.2 KiB
ArmAsm
/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
#ifndef SYS_vfork
|
|
#define SYS_vfork 66
|
|
#endif
|
|
|
|
SYSCALL__ (vfork, 0)
|
|
/* %o1 is now 0 for the parent and 1 for the child. Decrement it to
|
|
make it -1 (all bits set) for the parent, and 0 (no bits set)
|
|
for the child. Then AND it with %o0, so the parent gets
|
|
%o0&-1==0, and the child gets %o0&0==0. */
|
|
sub %o1, 1, %o1
|
|
retl
|
|
and %o0, %o1, %o0
|
|
|
|
weak_alias (__vfork, vfork)
|