l4/pkg/l4re-core/l4util/lib/src/memdesc.c

   1 /*
   2  * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
   3  *               Alexander Warg <warg@os.inf.tu-dresden.de>,
   4  *               Frank Mehnert <fm3@os.inf.tu-dresden.de>
   5  *     economic rights: Technische Universität Dresden (Germany)
   6  * This file is part of TUD:OS and distributed under the terms of the
   7  * GNU Lesser General Public License 2.1.
   8  * Please see the COPYING-LGPL-2.1 file for details.
   9  */
  10 /*
  11  * Some convenience functions for memory descriptors.
  12  */
  13
  14 #include <l4/sigma0/kip.h>
  15 #include <l4/sys/memdesc.h>
  16 #include <l4/util/memdesc.h>
  17
  18 l4_addr_t
  19 l4util_memdesc_vm_high(l4_kernel_info_t *kinfo)
  20 {
  21   l4_kernel_info_mem_desc_t *md = l4_kernel_info_get_mem_descs(kinfo);
  22   int nr = l4_kernel_info_get_num_mem_descs(kinfo);
  23   int i;
  24
  25   for (i = 0; i < nr; i++, md++)
  26     if (l4_kernel_info_get_mem_desc_is_virtual(md))
  27       return l4_kernel_info_get_mem_desc_end(md);
  28
  29   return 0;
  30 }