arch/ppc-sam440/exec/userstate.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: UserState() - Return to normal mode after changing things.
   6     Lang: english
   7 */
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12 #include <proto/exec.h>
  13 #include <asm/amcc440.h>
  14
  15         AROS_LH1(void, UserState,
  16
  17 /*  SYNOPSIS */
  18         AROS_LHA(APTR, sysStack, D0),
  19
  20 /*  LOCATION */
  21         struct ExecBase *, SysBase, 26, Exec)
  22
  23 /*  FUNCTION
  24         Return to user mode after a call to SuperState().
  25
  26     INPUTS
  27         sysStack    -   The return value from SuperState()
  28
  29     RESULT
  30         The system will be back to normal.
  31
  32     NOTES
  33
  34     EXAMPLE
  35
  36     BUGS
  37
  38     SEE ALSO
  39         SuperState(), Supervisor()
  40
  41     INTERNALS
  42         Undo SuperState()
  43
  44 ******************************************************************************/
  45 {
  46     AROS_LIBFUNC_INIT
  47
  48     wrmsr(rdmsr() | (MSR_PR));
  49
  50     sysStack = 0;   /* Get rid of the compiler warning */
  51
  52     AROS_LIBFUNC_EXIT
  53 } /* UserState() */