X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=urcu%2Fuatomic%2Fsparc64.h;fp=urcu%2Fuatomic%2Fsparc64.h;h=d9ecada5aa56c3891c2f34624a60247f02c5168e;hb=a2e7bf9ce5de5113c7f59c380b0087e291cd603d;hp=0000000000000000000000000000000000000000;hpb=1b9119f8d4c3f40a61d4ee5403f0e7e5967c33d8;p=urcu.git

diff --git a/urcu/uatomic/sparc64.h b/urcu/uatomic/sparc64.h
new file mode 100644
index 0000000..d9ecada
--- /dev/null
+++ b/urcu/uatomic/sparc64.h
@@ -0,0 +1,80 @@
+#ifndef _URCU_ARCH_UATOMIC_SPARC64_H
+#define _URCU_ARCH_UATOMIC_SPARC64_H
+
+/* 
+ * Copyright (c) 1991-1994 by Xerox Corporation.  All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.
+ * Copyright (c) 1999-2003 by Hewlett-Packard Company. All rights reserved.
+ * Copyright (c) 2009      Mathieu Desnoyers
+ *
+ * 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 
+
+/* cmpxchg */
+
+static inline __attribute__((always_inline))
+unsigned long _uatomic_cmpxchg(void *addr, unsigned long old,
+			      unsigned long _new, int len)
+{
+	switch (len) {
+	case 4:
+	{
+		__asm__ __volatile__ (
+			"membar #StoreLoad | #LoadLoad\n\t"
+                        "cas [%1],%2,%0\n\t"
+                        "membar #StoreLoad | #StoreStore\n\t"
+                        : "+&r" (_new)
+                        : "r" (addr), "r" (old)
+                        : "memory");
+
+		return _new;
+	}
+#if (CAA_BITS_PER_LONG == 64)
+	case 8:
+	{
+		__asm__ __volatile__ (
+			"membar #StoreLoad | #LoadLoad\n\t"
+                        "casx [%1],%2,%0\n\t"
+                        "membar #StoreLoad | #StoreStore\n\t"
+                        : "+&r" (_new)
+                        : "r" (addr), "r" (old)
+                        : "memory");
+
+		return _new;
+	}
+#endif
+	}
+	__builtin_trap();
+	return 0;
+}
+
+
+#define uatomic_cmpxchg(addr, old, _new)				    \
+	((__typeof__(*(addr))) _uatomic_cmpxchg((addr), (unsigned long)(old),\
+						(unsigned long)(_new), 	    \
+						sizeof(*(addr))))
+
+#ifdef __cplusplus 
+}
+#endif
+
+#include <urcu/uatomic/generic.h>
+
+#endif /* _URCU_ARCH_UATOMIC_PPC_H */