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/* Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep-cancel.h>
#define _ERRNO_H 1
#include <bits/errno.h>
#include <bits/kernel-features.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. */
#ifdef SHARED
.section ".toc","aw"
.LC0:
.tc __libc_pthread_functions[TC],__libc_pthread_functions
.section ".text"
.align 2
#endif
ENTRY (__vfork)
#ifdef __NR_vfork
# ifdef SHARED
ld 10,.LC0@toc(2)
ld 10,0(10)
cmpwi 10,0
bne- HIDDEN_JUMPTARGET(fork)
# else
.weak pthread_create
lis 10,pthread_create@highest
ori 10,10,pthread_create@higher
sldi 10,10,32
oris 10,10,pthread_create@h
ori 10,10,pthread_create@l
cmpwi 10,0
bne- .Lhidden_fork
# endif
DO_CALL (SYS_ify (vfork));
# ifdef __ASSUME_VFORK_SYSCALL
PSEUDO_RET
# else
bnslr+
/* Check if vfork syscall is known at all. */
cmpdi r3,ENOSYS
# ifdef SHARED
bne JUMPTARGET(__syscall_error)
# else
bne- .Lsyscall_error
# endif
# endif
#endif
#ifndef __ASSUME_VFORK_SYSCALL
/* If we don't have vfork, fork is close enough. */
DO_CALL (SYS_ify (fork));
PSEUDO_RET
#endif
# ifndef SHARED
.Lhidden_fork:
b HIDDEN_JUMPTARGET(fork)
.Lsyscall_error:
b JUMPTARGET(__syscall_error)
# endif
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
weak_alias (__vfork, vfork)
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