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/* syscall.c - generalized linux system call interface - rick sladkey */

#include <stdarg.h>

#include <syscall.h>

#include <errno.h>

#ifdef PTHREAD_KERNEL

#pragma weak machdep_syscall = __machdep_syscall

int

__machdep_syscall (int number, ...)

{

  register long res asm ("%d0");

  register long d1 asm ("%d1"), d2 asm ("%d2"), d3 asm ("%d3");

  register long d4 asm ("%d4"), d5 asm ("%d5");

  va_list args;

  va_start (args, number);

  d1 = va_arg (args, int);

  d2 = va_arg (args, int);

  d3 = va_arg (args, int);

  d4 = va_arg (args, int);

  d5 = va_arg (args, int);

  va_end (args);

  __asm__ volatile ("trap  #0\n\t"

                    : "=g" (res)

                    : "0" (number), "g" (d1), "g" (d2), "g" (d3), "g" (d4),

                      "g" (d5)

                    : "%d0");

  return res;

}

#else /* PTHREAD_KERNEL */

/* No weak syscall?.  */

#undef _POSIX_THREADS

#ifdef _POSIX_THREADS

#pragma weak syscall

#endif

int

syscall(int number, ...)

{

        long res;

        register long d0 asm("%d0");

        register long d1 asm("%d1"), d2 asm("%d2"), d3 asm("%d3"),

                      d4 asm("%d4"), d5 asm("%d5");

        va_list args;

        va_start(args, number);

        d1 = va_arg(args, int);

        d2 = va_arg(args, int);

        d3 = va_arg(args, int);

        d4 = va_arg(args, int);

        d5 = va_arg(args, int);

        va_end(args);

        __asm__ volatile ("trap  #0\n\t"

                : "=g" (d0)

                : "0" (number), "g" (d1), "g" (d2), "g" (d3), "g" (d4),

                          "g" (d5)

                : "%d0");

        res = d0;

        if (res < 0) {

                errno = -res;

                res = -1;

        }

        return res;

}

#endif /* PTHREAD_KERNEL */