/* Copyright (C) 2000-2018 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, see

   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

#define _SIGNAL_H

#include <bits/signum.h>

#include <tcb-offsets.h>

/* The following are defined in linux/sched.h, which unfortunately	*/

/* is not safe for inclusion in an assembly file.			*/

#define CLONE_VM        0x00000100      /* set if VM shared between processes */

#define CLONE_VFORK     0x00004000      /* set if the parent wants the child to wake it up on mm_release */

/* pid_t vfork(void); */

/* Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0)	*/

ENTRY (__libc_vfork)

	.prologue	// work around a GAS bug which triggers if

	.body		// first .prologue is not at the beginning of proc.

	alloc r2=ar.pfs,0,0,2,0

	mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD

	mov out1=0		/* Standard sp value.			*/

	;;

	DO_CALL (SYS_ify (clone))

	cmp.eq p6,p0=0,r8

(p6)	br.cond.dptk 1f

1:

	cmp.eq p6,p0=-1,r10

(p6)	br.cond.spnt.few __syscall_error

	ret

PSEUDO_END (__libc_vfork)

strong_alias (__libc_vfork, __vfork)

libc_hidden_def (__vfork)

weak_alias (__vfork, vfork)