1/* vfork for Linux, RISC-V version.
2   Copyright (C) 2005-2018 Free Software Foundation, Inc.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library.  If not, see
16   <http://www.gnu.org/licenses/>.  */
17
18/* vfork() is just a special case of clone().  */
19
20#include <sys/asm.h>
21#include <sysdep.h>
22#define __ASSEMBLY__
23#include <linux/sched.h>
24#include <asm/signal.h>
25
26	.text
27LEAF (__vfork)
28
29	li	a0, (CLONE_VFORK | CLONE_VM | SIGCHLD)
30	mv	a1, sp
31
32	li	a7, __NR_clone
33	scall
34
35	bltz	a0, 1f
36	ret
37
381:	j		__syscall_error
39END (__vfork)
40libc_hidden_def(vfork)
41
42weak_alias (__vfork, vfork)
43