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
|
/* vi: set sw=4 ts=4: */
/* syscall for arm/uClibc
*
* Copyright (C) 2002 by Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#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, long f)
{
#if !defined(__thumb__)
register long _r0 __asm__("r0")=(long)(sysnum);
register long _r6 __asm__("r6")=(long)(f);
register long _r5 __asm__("r5")=(long)(e);
register long _r4 __asm__("r4")=(long)(d);
register long _r3 __asm__("r3")=(long)(c);
register long _r2 __asm__("r2")=(long)(b);
register long _r1 __asm__("r1")=(long)(a);
__asm__ __volatile__(
"swi %1"
: "=r"(_r0)
: "i"(__NR_syscall), "r"(_r0), "r"(_r1),
"r"(_r2), "r"(_r3), "r"(_r4), "r"(_r5),
"r"(_r6)
: "memory");
#else
register long _r7 __asm__("r7")=(long)(sysnum);
register long _r5 __asm__("r5")=(long)(f);
register long _r4 __asm__("r4")=(long)(e);
register long _r3 __asm__("r3")=(long)(d);
register long _r2 __asm__("r2")=(long)(c);
register long _r1 __asm__("r1")=(long)(b);
register long _r0 __asm__("r0")=(long)(a);
__asm__ __volatile__(
"swi 0"
: "=r"(_r0)
: "r"(_r0), "r"(_r1), "r"(_r2), "r"(_r3),
"r"(_r4), "r"(_r5), "r"(_r7)
: "memory");
#endif
if(_r0 >=(unsigned long) -4095) {
long err = _r0;
(*__errno_location())=(-err);
_r0=(unsigned long) -1;
}
return (long) _r0;
}
|
