arch/arm-native/kernel/virtualtophysical.c

   1 /*
   2     Copyright © 2015, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6 */
   7
   8 #include <aros/kernel.h>
   9 #include <aros/libcall.h>
  10
  11 #include <kernel_base.h>
  12 #include <proto/kernel.h>
  13
  14 #include "kernel_intern.h"
  15 extern struct TagItem *BootMsg;
  16
  17 AROS_LH1I(void *, KrnVirtualToPhysical,
  18         AROS_LHA(void *, virtual, A0),
  19         struct KernelBase *, KernelBase, 20, Kernel)
  20 {
  21     AROS_LIBFUNC_INIT
  22
  23     if (virtual < (void *)0xf8000000)
  24         return virtual;
  25     else
  26     {
  27         void *lowest = krnFindTagItem(KRN_KernelLowest, BootMsg);
  28         void *physlowest = krnFindTagItem(KRN_KernelPhysLowest, BootMsg);
  29
  30         return virtual - lowest + physlowest;
  31     }
  32
  33     AROS_LIBFUNC_EXIT
  34 }