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
|
/* vi: set sw=4 ts=4: */
/* syscall for blackfin/uClibc
*
* Copyright (C) 2004 by Analog Devices Inc.
* Copyright (C) 2002 by Erik Andersen <andersen@uclibc.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program 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 Library General Public License
* for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <features.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/syscall.h>
long syscall(long sysnum, long a, long b, long c, long d, long e)
{
int _r0 = 0;
asm volatile(
"p0 = %1;" /*SysCall Number*/
"r0 = %2;"
"r1 = %3;"
"r2 = %4;"
"r3 = %6;"
"r4 = %5;"
"excpt 0;" /*Call the System Call*/
"%0 = r0;" /*Store the result of syscall*/
: "=r"(_r0)
: "r"(sysnum), "r"(a), "r"(b),
"r"(c), "r"(d), "r"(e)
: "memory");
if(_r0 >=(unsigned long) -4095) {
(*__errno_location())=(-_r0);
_r0=(unsigned long) -1;
}
return (long) _r0;
}
|
