l4/pkg/l4re-core/l4util/include/ARCH-arm/stack_impl.h

   1 /**
   2  * \file
   3  * \brief Stack utilities, arm version
   4  */
   5 /*
   6  * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>
   7  *     economic rights: Technische Universität Dresden (Germany)
   8  * This file is part of TUD:OS and distributed under the terms of the
   9  * GNU Lesser General Public License 2.1.
  10  * Please see the COPYING-LGPL-2.1 file for details.
  11  */
  12 #ifndef __L4UTIL__INCLUDE__ARCH_ARM__STACK_IMPL_H__
  13 #define __L4UTIL__INCLUDE__ARCH_ARM__STACK_IMPL_H__
  14
  15 #include <l4/sys/compiler.h>
  16
  17 EXTERN_C_BEGIN
  18
  19 #ifndef _L4UTIL_STACK_H
  20 #error Do not include stack_impl.h directly, use stack.h instead
  21 #endif
  22
  23 L4_INLINE l4_addr_t l4util_stack_get_sp(void)
  24 {
  25   register l4_addr_t sp asm ("sp");
  26   return sp;
  27 }
  28
  29 EXTERN_C_END
  30
  31 #endif /* ! __L4UTIL__INCLUDE__ARCH_ARM__STACK_IMPL_H__ */