include/urcu/arch/alpha.h

   1 #ifndef _URCU_ARCH_ALPHA_H
   2 #define _URCU_ARCH_ALPHA_H
   3
   4 /*
   5  * arch_alpha.h: trivial definitions for the Alpha architecture.
   6  *
   7  * Copyright (c) 2010 Paolo Bonzini <pbonzini@redhat.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <urcu/compiler.h>
  25 #include <urcu/config.h>
  26 #include <urcu/syscall-compat.h>
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #define cmm_mb()                        __asm__ __volatile__ ("mb":::"memory")
  33 #define cmm_wmb()                       __asm__ __volatile__ ("wmb":::"memory")
  34 #define cmm_read_barrier_depends()      __asm__ __volatile__ ("mb":::"memory")
  35
  36 /*
  37  * On Linux, define the membarrier system call number if not yet available in
  38  * the system headers.
  39  */
  40 #if (defined(__linux__) && !defined(__NR_membarrier))
  41 #define __NR_membarrier         517
  42 #endif
  43
  44 #ifdef __cplusplus
  45 }
  46 #endif
  47
  48 #include <urcu/arch/generic.h>
  49
  50 #endif /* _URCU_ARCH_ALPHA_H */