urcu/arch_sparc64.h

   1 #ifndef _URCU_ARCH_SPARC64_H
   2 #define _URCU_ARCH_SPARC64_H
   3
   4 /*
   5  * arch_sparc64.h: trivial definitions for the Sparc64 architecture.
   6  *
   7  * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
   8  * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  23  */
  24
  25 #include <urcu/compiler.h>
  26 #include <urcu/config.h>
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #define CACHE_LINE_SIZE 256
  33
  34 /*
  35  * Inspired from the Linux kernel. Workaround Spitfire bug #51.
  36  */
  37 #define membar_safe(type)                       \
  38 __asm__ __volatile__("ba,pt %%xcc, 1f\n\t"      \
  39                      "membar " type "\n"        \
  40                      "1:\n"                     \
  41                      : : : "memory")
  42
  43 #define cmm_mb()        membar_safe("#LoadLoad | #LoadStore | #StoreStore | #StoreLoad")
  44 #define cmm_rmb()       membar_safe("#LoadLoad")
  45 #define cmm_wmb()       membar_safe("#StoreStore")
  46
  47 typedef unsigned long long cycles_t;
  48
  49 static inline cycles_t get_cycles (void)
  50 {
  51         return 0;       /* unimplemented */
  52 }
  53
  54 #ifdef __cplusplus
  55 }
  56 #endif
  57
  58 #include <urcu/arch_generic.h>
  59
  60 #endif /* _URCU_ARCH_SPARC64_H */