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/* syscall.c - generalized linux system call interface */
#include <stdarg.h>
#include <syscall.h>
#include <errno.h>
/* perform a Linux/CRIS system call with variable number of arguments
* put them and the syscall number in the right registers and call
* break 13.
*/
int
syscall(int number, ...)
{
register long __a __asm__ ("r10");
register long __b __asm__ ("r11");
register long __c __asm__ ("r12");
register long __d __asm__ ("r13");
register long __e __asm__ ("r0");
va_list args;
va_start(args, number);
__a = va_arg(args, int);
__b = va_arg(args, int);
__c = va_arg(args, int);
__d = va_arg(args, int);
__e = va_arg(args, int);
va_end(args);
__asm__ volatile ("movu.w %1,$r9\n\tbreak 13\n\t"
: "=r" (__a)
: "g" (number), "0" (__a), "r" (__b), "r" (__c), "r" (__d),
"r" (__e)
: "r10", "r9");
if (__a >= 0)
return __a;
errno = -__a;
return -1;
}
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