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
|
/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
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/>. */
/* TILE-Gx specifies that "unsigned int" is sign extended in the high
32 bits. But since the userspace API claims to be "unsigned long",
calls into __ioctl() will not be sign extended, but rather pass all
64 bits of the argument. Therefore, when we pass the "request"
value to the kernel, we must explicitly sign-extend it to match the
kernel's internal use of "unsigned int" as the second argument,
which we do by casting to "unsigned int". */
#include <sysdep.h>
.text
ENTRY (__ioctl)
FEEDBACK_ENTER(__ioctl)
{
addxi r1, r1, 0
moveli TREG_SYSCALL_NR_NAME, __NR_ioctl
}
swint1
bnez r1, 0f
jrp lr
PSEUDO_END (__ioctl)
libc_hidden_def (__ioctl)
weak_alias (__ioctl, ioctl)
|
