1 /*
2 * syscall.c
3 *
4 * Port on Texas Instruments TMS320C6x architecture
5 *
6 * Copyright (C) 2006, 2010 Texas Instruments Incorporated
7 * Author: Thomas Charleux (thomas.charleux@jaluna.com)
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <features.h>
15 #include <errno.h>
16 #include <sys/types.h>
17 #include <sys/syscall.h>
18 #include <unistd.h>
19 #include <stdarg.h>
20
syscall(long int __sysno,...)21 long int syscall (long int __sysno, ...)
22 {
23 register long no __asm__("B0");
24 register long a __asm__("A4");
25 register long b __asm__("B4");
26 register long c __asm__("A6");
27 register long d __asm__("B6");
28 register long e __asm__("A8");
29 register long f __asm__("B8");
30 long __res;
31 va_list ap;
32
33 va_start( ap, __sysno);
34 a = va_arg( ap, long);
35 b = va_arg( ap, long);
36 c = va_arg( ap, long);
37 d = va_arg( ap, long);
38 e = va_arg( ap, long);
39 f = va_arg( ap, long);
40 va_end( ap );
41
42 no = __sysno;
43
44 __asm__ __volatile__ ("SWE" : "=a" (a) : "a" (a), "b" (b), "a" (c), "b" (d), "a" (e), "b" (f), "b" (no)
45 : "memory", "cc");
46
47 __res = a;
48 __SYSCALL_RETURN (long);
49 }
50