X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Fuatomic%2Farm.h;fp=urcu%2Fuatomic%2Farm.h;h=e0016b8e3153572caac53956df86a5b612481c0c;hp=0000000000000000000000000000000000000000;hb=a2e7bf9ce5de5113c7f59c380b0087e291cd603d;hpb=1b9119f8d4c3f40a61d4ee5403f0e7e5967c33d8

diff --git a/urcu/uatomic/arm.h b/urcu/uatomic/arm.h
new file mode 100644
index 0000000..e0016b8
--- /dev/null
+++ b/urcu/uatomic/arm.h
@@ -0,0 +1,43 @@
+#ifndef _URCU_ARCH_UATOMIC_ARM_H
+#define _URCU_ARCH_UATOMIC_ARM_H
+
+/* 
+ * Atomics for ARM.  This approach is usable on kernels back to 2.6.15.
+ *
+ * Copyright (c) 1991-1994 by Xerox Corporation.  All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.
+ * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P.
+ * Copyright (c) 2009      Mathieu Desnoyers
+ * Copyright (c) 2010      Paul E. McKenney, IBM Corporation
+ *			   (Adapted from uatomic_arch_ppc.h)
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose,  provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ * Code inspired from libuatomic_ops-1.2, inherited in part from the
+ * Boehm-Demers-Weiser conservative garbage collector.
+ */
+
+#include <urcu/compiler.h>
+#include <urcu/system.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+/* xchg */
+#define uatomic_xchg(addr, v) __sync_lock_test_and_set(addr, v)
+
+#ifdef __cplusplus 
+}
+#endif
+
+#include <urcu/uatomic/generic.h>
+
+#endif /* _URCU_ARCH_UATOMIC_ARM_H */