include/urcu/arch/alpha.h

   1 // SPDX-FileCopyrightText: 2010 Paolo Bonzini <pbonzini@redhat.com>
   2 //
   3 // SPDX-License-Identifier: LGPL-2.1-or-later
   4
   5 #ifndef _URCU_ARCH_ALPHA_H
   6 #define _URCU_ARCH_ALPHA_H
   7
   8 /*
   9  * arch_alpha.h: trivial definitions for the Alpha architecture.
  10  */
  11
  12 #include <urcu/compiler.h>
  13 #include <urcu/config.h>
  14 #include <urcu/syscall-compat.h>
  15
  16 #ifdef __cplusplus
  17 extern "C" {
  18 #endif
  19
  20 #define cmm_mb()                        __asm__ __volatile__ ("mb":::"memory")
  21 #define cmm_wmb()                       __asm__ __volatile__ ("wmb":::"memory")
  22 #define cmm_read_barrier_depends()      __asm__ __volatile__ ("mb":::"memory")
  23
  24 /*
  25  * On Linux, define the membarrier system call number if not yet available in
  26  * the system headers.
  27  */
  28 #if (defined(__linux__) && !defined(__NR_membarrier))
  29 #define __NR_membarrier         517
  30 #endif
  31
  32 #ifdef __cplusplus
  33 }
  34 #endif
  35
  36 #include <urcu/arch/generic.h>
  37
  38 #endif /* _URCU_ARCH_ALPHA_H */