hppa: allocate membarrier system call number

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

diff --git a/urcu/arch/hppa.h b/urcu/arch/hppa.h
index b9b9494364a622b98c344419f3f4de01f888a63e..c8d4d057708e1d5fe603697b12200ca54d0d5682 100644 (file)
--- a/urcu/arch/hppa.h
+++ b/urcu/arch/hppa.h
@@ -1,8 +1,29 @@
 #ifndef _URCU_ARCH_HPPA_H
 #define _URCU_ARCH_HPPA_H
 
+/*
+ * arch/hppa.h: definitions for hppa architecture
+ *
+ * Copyright (c) 2014 Helge Deller <deller@gmx.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
 #include <urcu/compiler.h>
 #include <urcu/config.h>
+#include <urcu/syscall-compat.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -11,11 +32,20 @@ extern "C" {
 #include <stdlib.h>
 #include <sys/time.h>
 
-typedef unsigned long cycles_t;
+/*
+ * 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                343
+#endif
+
+#define HAS_CAA_GET_CYCLES
+typedef unsigned long caa_cycles_t;
 
-static inline cycles_t caa_get_cycles(void)
+static inline caa_cycles_t caa_get_cycles(void)
 {
-       cycles_t cycles;
+       caa_cycles_t cycles;
 
        asm volatile("mfctl 16, %0" : "=r" (cycles));
        return cycles;