1 /* Copyright (C) 2003 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 <http://www.gnu.org/licenses/>. */
18 #include <sysdep-cancel.h>
20 #include <bits/errno.h>
21 #include <bits/kernel-features.h>
23 /* Clone the calling process, but without copying the whole address space.
24 The calling process is suspended until the new process exits or is
25 replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
26 and the process ID of the new process to the old process. */
31 .tc __libc_pthread_functions[TC],__libc_pthread_functions
44 bne- HIDDEN_JUMPTARGET(fork)
47 lis 10,pthread_create@highest
48 ori 10,10,pthread_create@higher
50 oris 10,10,pthread_create@h
51 ori 10,10,pthread_create@l
56 DO_CALL (SYS_ify (vfork));
58 # ifdef __ASSUME_VFORK_SYSCALL
62 /* Check if vfork syscall is known at all. */
65 bne JUMPTARGET(__syscall_error)
73 #ifndef __ASSUME_VFORK_SYSCALL
74 /* If we don't have vfork, fork is close enough. */
76 DO_CALL (SYS_ify (fork));
82 b HIDDEN_JUMPTARGET(fork)
84 b JUMPTARGET(__syscall_error)
88 libc_hidden_def (__vfork)
90 weak_alias (__vfork, vfork)