arch/all-pc/exec/supervisor.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Supervisor() - Execute some code in a privileged environment.
   6     Lang: english
   7 */
   8
   9 #include <aros/libcall.h>
  10 #include <exec/execbase.h>
  11
  12 #include "kernel_syscall.h"
  13
  14 AROS_LH1I(IPTR, Supervisor,
  15          AROS_LHA(void *, userFunction, A5),
  16          struct ExecBase *, SysBase, 5, Exec)
  17 {
  18     AROS_LIBFUNC_INIT
  19
  20     IPTR retval;
  21
  22     /* Put function pointer into e(r)dx because on x86-64 it doesn't require additional reload */
  23     __asm__ __volatile__ ("int $0xfe":"=a"(retval):"a"(SC_SUPERVISOR),"D"(userFunction));
  24     return retval;
  25
  26     AROS_LIBFUNC_EXIT
  27 } /* Supervisor() */