mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-31 22:10:34 +03:00
51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
/* vfork for Linux.
|
|
Copyright (C) 2022-2024 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 <sysdep.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)
|
|
|
|
li.d a0, 0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
|
|
add.d a1, zero, sp
|
|
|
|
/* Do the system call. */
|
|
li.d a7, __NR_clone
|
|
syscall 0
|
|
|
|
blt a0, zero ,L (error)
|
|
|
|
ret
|
|
|
|
L (error):
|
|
b __syscall_error
|
|
|
|
END (__vfork)
|
|
|
|
libc_hidden_def (__vfork)
|
|
|
|
weak_alias (__vfork, vfork)
|
|
strong_alias (__vfork, __libc_vfork)
|