1 /* Copyright (C) 2004-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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 <https://www.gnu.org/licenses/>. */
20 #include <bits/errno.h>
21 #include <bits/wordsize.h>
22 #include <tcb-offsets.h>
24 /* Clone the calling process, but without copying the whole address space.
25 The calling process is suspended until the new process exits or is
26 replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
27 and the process ID of the new process to the old process. */
30 /* Do vfork system call. */
31 lghi %r1,SYS_ify (vfork)
34 /* Check for error. */
37 jgnl SYSCALL_ERROR_LABEL
41 PSEUDO_END (__libc_vfork)
44 weak_alias (__libc_vfork, vfork)
45 strong_alias (__libc_vfork, __vfork)
46 libc_hidden_def (__vfork)