mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
61 lines
1.8 KiB
ArmAsm
61 lines
1.8 KiB
ArmAsm
/* Copyright (C) 1999-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Andreas Schwab <schwab@gnu.org>.
|
|
|
|
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 _ERRNO_H 1
|
|
#include <bits/errno.h>
|
|
#include <tcb-offsets.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)
|
|
|
|
/* Pop the return PC value into A0. */
|
|
movel %sp@+, %a0
|
|
cfi_adjust_cfa_offset (-4)
|
|
cfi_register (%pc, %a0)
|
|
|
|
/* Stuff the syscall number in D0 and trap into the kernel. */
|
|
movel #SYS_ify (vfork), %d0
|
|
trap #0
|
|
|
|
tstl %d0
|
|
jmi .Lerror /* Branch forward if it failed. */
|
|
|
|
/* Jump to the return PC. */
|
|
jmp %a0@
|
|
|
|
.Lerror:
|
|
/* Push back the return PC. */
|
|
movel %a0,%sp@-
|
|
cfi_adjust_cfa_offset (4)
|
|
cfi_rel_offset (%pc, 0)
|
|
|
|
#ifndef PIC
|
|
jbra SYSCALL_ERROR_LABEL
|
|
#endif
|
|
|
|
PSEUDO_END (__vfork)
|
|
libc_hidden_def (__vfork)
|
|
|
|
weak_alias (__vfork, vfork)
|
|
strong_alias (__vfork, __libc_vfork)
|