mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
53 lines
1.6 KiB
ArmAsm
53 lines
1.6 KiB
ArmAsm
/* Copyright (C) 2004-2017 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 _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 (__libc_vfork)
|
|
|
|
mov.w .L1, r3
|
|
trapa #0x10
|
|
mov r0, r1
|
|
|
|
mov #-12, r2
|
|
shad r2, r1
|
|
not r1, r1 // r1=0 means r0 = -1 to -4095
|
|
tst r1, r1 // i.e. error in linux
|
|
bf .Lpseudo_end
|
|
SYSCALL_ERROR_HANDLER
|
|
.Lpseudo_end:
|
|
rts
|
|
nop
|
|
.L1:
|
|
.word __NR_vfork
|
|
.align 2
|
|
PSEUDO_END (__libc_vfork)
|
|
|
|
#if IS_IN (libc)
|
|
weak_alias (__libc_vfork, vfork)
|
|
strong_alias (__libc_vfork, __vfork)
|
|
libc_hidden_def (__vfork)
|
|
#endif
|