tools/arch/xtensa/include/asm/barrier.h

   1 /*
   2  * Copied from the kernel sources to tools/:
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 2001 - 2012 Tensilica Inc.
   9  */
  10
  11 #ifndef _TOOLS_LINUX_XTENSA_SYSTEM_H
  12 #define _TOOLS_LINUX_XTENSA_SYSTEM_H
  13
  14 #define mb()  ({ __asm__ __volatile__("memw" : : : "memory"); })
  15 #define rmb() barrier()
  16 #define wmb() mb()
  17
  18 #endif /* _TOOLS_LINUX_XTENSA_SYSTEM_H */