arch/arm-native/kernel/issuper.c

   1 /*
   2     Copyright © 2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/kernel.h>
   7 #include <aros/libcall.h>
   8
   9 #include <aros/arm/cpucontext.h>
  10
  11 #include <kernel_base.h>
  12
  13 #include <proto/kernel.h>
  14
  15 /* See rom/kernel/issuper.c for documentation */
  16
  17 AROS_LH0I(int, KrnIsSuper,
  18     struct KernelBase *, KernelBase, 13, Kernel)
  19 {
  20     AROS_LIBFUNC_INIT
  21
  22     register unsigned int reg;
  23     asm volatile("mrs %[reg], cpsr" : [reg] "=r" (reg) );
  24
  25     return !(((reg & CPUMODE_MASK) == CPUMODE_USER) || ((reg & CPUMODE_MASK) == CPUMODE_SYSTEM));
  26
  27     AROS_LIBFUNC_EXIT
  28 }