blob: dc8b7d445d08a6afc97dc916c0f4af65bb69b656 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/*
* libc/sysdeps/linux/nios/vfork.S -- `vfork' syscall for linux/nios
*
* Copyright (C) 2004 Microtronix Datacom Ltd
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License. See the file COPYING.LIB in the main
* directory of this archive for more details.
*
* Written by Wentao Xu <wentao@microtronix.com>
*/
#include <features.h>
#include <bits/errno.h>
#include <sys/syscall.h>
#include "NM_Macros.S"
#ifndef __NR_vfork
#define __NR_vfork __NR_fork /* uClinux-2.0 only has fork which is vfork */
#endif
.text
.align 2
.globl __vfork
.hidden __vfork
.type __vfork,@function
__vfork:
MOVIP %g1, __NR_vfork
trap 63
bgen %g1, 12
not %g1 /* (unsigned long) -4096 */
cmp %o0, %g1
skps cc_hi
jmp %o7
nop
fix_errno:
neg %o0
save %sp, -16
MOVIA %g1, __errno_location@h
call %g1
nop
st [%o0], %i0 /* store errno */
xor %i0, %i0
subi %i0, 1 /* retval=-1 */
ret
restore
.size __vfork,.-__vfork
weak_alias(__vfork,vfork)
libc_hidden_def(vfork)
|
