1 /* Copyright (C) 2000, 2002, 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/>. */
19 #include <sysdep-cancel.h>
21 #include <bits/signum.h>
23 /* The following are defined in linux/sched.h, which unfortunately */
24 /* is not safe for inclusion in an assembly file. */
25 #define CLONE_VM 0x00000100 /* set if VM shared between processes */
26 #define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */
28 /* pid_t vfork(void); */
29 /* Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0) */
33 addl r14 = @gprel(__libc_pthread_functions#), gp;;
36 addl r14 = @ltoff(@fptr(pthread_create#)), gp;;
39 cmp.ne p6, p7 = 0, r14
40 (p6) br.cond.spnt.few HIDDEN_JUMPTARGET (fork);;
41 alloc r2=ar.pfs,0,0,2,0
42 mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD
43 mov out1=0 /* Standard sp value. */
45 DO_CALL (SYS_ify (clone))
48 (p6) br.cond.spnt.few __syscall_error
51 libc_hidden_def (__vfork)
53 weak_alias (__vfork, vfork)