sparc64: allocate membarrier system call number

[urcu.git] / urcu / arch / sparc64.h

diff --git a/urcu/arch/sparc64.h b/urcu/arch/sparc64.h
index fb99450d36fd0521d1fcb9de72f97cd229cab579..1ff40f5c4698d4d7fd693098a16aabedcf1ba45a 100644 (file)
--- a/urcu/arch/sparc64.h
+++ b/urcu/arch/sparc64.h
@@ -28,7 +28,15 @@
 
 #ifdef __cplusplus
 extern "C" {
-#endif 
+#endif
+
+/*
+ * On Linux, define the membarrier system call number if not yet available in
+ * the system headers.
+ */
+#if (defined(__linux__) && !defined(__NR_membarrier))
+#define __NR_membarrier                351
+#endif
 
 #define CAA_CACHE_LINE_SIZE    256
 
@@ -45,7 +53,7 @@ __asm__ __volatile__("ba,pt %%xcc, 1f\n\t"    \
 #define cmm_rmb()      membar_safe("#LoadLoad")
 #define cmm_wmb()      membar_safe("#StoreStore")
 
-#ifdef __cplusplus 
+#ifdef __cplusplus
 }
 #endif