Headers: move arch_*.h to urcu/arch/*.h

[urcu.git] / urcu / arch / x86.h

diff --git a/urcu/arch/x86.h b/urcu/arch/x86.h
new file mode 100644 (file)
index 0000000..9e5411f
--- /dev/null
+++ b/urcu/arch/x86.h
@@ -0,0 +1,74 @@
+#ifndef _URCU_ARCH_X86_H
+#define _URCU_ARCH_X86_H
+
+/*
+ * arch_x86.h: trivial definitions for the x86 architecture.
+ *
+ * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
+ * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * 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>
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+#define CAA_CACHE_LINE_SIZE    128
+
+#ifdef CONFIG_RCU_HAVE_FENCE
+#define cmm_mb()    asm volatile("mfence":::"memory")
+#define cmm_rmb()   asm volatile("lfence":::"memory")
+#define cmm_wmb()   asm volatile("sfence"::: "memory")
+#else
+/*
+ * Some non-Intel clones support out of order store. cmm_wmb() ceases to be a
+ * nop for these.
+ */
+#define cmm_mb()    asm volatile("lock; addl $0,0(%%esp)":::"memory")
+#define cmm_rmb()   asm volatile("lock; addl $0,0(%%esp)":::"memory")
+#define cmm_wmb()   asm volatile("lock; addl $0,0(%%esp)"::: "memory")
+#endif
+
+#define caa_cpu_relax()        asm volatile("rep; nop" : : : "memory");
+
+#define rdtscll(val)                                                     \
+       do {                                                              \
+            unsigned int __a, __d;                                       \
+            asm volatile("rdtsc" : "=a" (__a), "=d" (__d));              \
+            (val) = ((unsigned long long)__a)                            \
+                       | (((unsigned long long)__d) << 32);              \
+       } while(0)
+
+typedef unsigned long long cycles_t;
+
+static inline cycles_t caa_get_cycles(void)
+{
+        cycles_t ret = 0;
+
+        rdtscll(ret);
+        return ret;
+}
+
+#ifdef __cplusplus 
+}
+#endif
+
+#include <urcu/arch/generic.h>
+
+#endif /* _URCU_ARCH_X86_H */