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/* vfork for ARC Linux.
Copyright (C) 2020-2021 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
<https://www.gnu.org/licenses/>. */
#include <sys/syscall.h>
#include <sysdep.h>
#include <tcb-offsets.h>
#define _SIGNAL_H
#include <bits/signum-arch.h> /* For SIGCHLD */
#define CLONE_VM 0x00000100
#define CLONE_VFORK 0x00004000
#define CLONE_FLAGS_FOR_VFORK (CLONE_VM|CLONE_VFORK|SIGCHLD)
ENTRY (__vfork)
mov r0, CLONE_FLAGS_FOR_VFORK
mov_s r1, sp
mov r8, __NR_clone
ARC_TRAP_INSN
cmp r0, 0
jge [blink] ; child continues
b __syscall_error
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
weak_alias (__vfork, vfork)
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