arch/ppc-chrp/exec/superstate.c

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: SuperState() - Switch the processor into a higher plane.
   6     Lang: english
   7 */
   8
   9 #include <proto/exec.h>
  10
  11 /* See rom/exec/superstate.c for documentation */
  12
  13 AROS_LH0(APTR, SuperState,
  14     struct ExecBase *, SysBase, 25, Exec)
  15 {
  16     AROS_LIBFUNC_INIT
  17
  18     asm volatile("li %%r3,%0; sc"::"i"(6 /*SC_SUPERSTATE*/):"memory","r3");
  19
  20     /* We have to return something. NULL is an invalid address for a
  21        stack, so it could be used to say that this function does
  22        nothing.
  23     */
  24     return NULL;
  25
  26     AROS_LIBFUNC_EXIT
  27 } /* SuperState() */