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/* Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep-cancel.h>
#define _ERRNO_H 1
#include <bits/errno.h>
/* Clone the calling process, but without copying the whole address space.
The calling process is suspended until the new process exits or is
replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
and the process ID of the new process to the old process. */
ENTRY (__vfork)
basr %r1,0
0:
#ifdef SHARED
al %r1,4f-0b(%r1)
l %r1,0(%r1)
ltr %r1,%r1
#else
icm %r1,15,4f-0b(%r1)
#endif
jne 1f
/* Do vfork system call. */
svc SYS_ify (vfork)
/* Check for error. */
lhi %r4,-4095
clr %r2,%r4
jnl SYSCALL_ERROR_LABEL
/* Normal return. */
br %r14
1:
basr %r1,0
2:
al %r1,3f-2b(%r1)
br %r1
3:
.long HIDDEN_JUMPTARGET(fork)-2b
4:
#ifdef SHARED
.long __libc_pthread_functions-0b
#else
.weak pthread_create
.long pthread_create
#endif
PSEUDO_END(__vfork)
libc_hidden_def (__vfork)
weak_alias (__vfork, vfork)
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