X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fsynch_bitops.h;fp=include%2Fasm-ia64%2Fsynch_bitops.h;h=21b7f8cd141da7a2095d90b38b772c01bc779a53;hb=f05f9504c50ed069377d37f02f22e7a16b5921de;hp=0000000000000000000000000000000000000000;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git

diff --git a/include/asm-ia64/synch_bitops.h b/include/asm-ia64/synch_bitops.h
new file mode 100644
index 000000000..21b7f8cd1
--- /dev/null
+++ b/include/asm-ia64/synch_bitops.h
@@ -0,0 +1,61 @@
+#ifndef __XEN_SYNCH_BITOPS_H__
+#define __XEN_SYNCH_BITOPS_H__
+
+/*
+ * Copyright 1992, Linus Torvalds.
+ * Heavily modified to provide guaranteed strong synchronisation
+ * when communicating with Xen or other guest OSes running on other CPUs.
+ */
+
+#define ADDR (*(volatile long *) addr)
+
+static __inline__ void synch_set_bit(int nr, volatile void * addr)
+{
+	set_bit(nr, addr);
+}
+
+static __inline__ void synch_clear_bit(int nr, volatile void * addr)
+{
+	clear_bit(nr, addr);
+}
+
+static __inline__ void synch_change_bit(int nr, volatile void * addr)
+{
+	change_bit(nr, addr);
+}
+
+static __inline__ int synch_test_and_set_bit(int nr, volatile void * addr)
+{
+    return test_and_set_bit(nr, addr);
+}
+
+static __inline__ int synch_test_and_clear_bit(int nr, volatile void * addr)
+{
+    return test_and_clear_bit(nr, addr);
+}
+
+static __inline__ int synch_test_and_change_bit(int nr, volatile void * addr)
+{
+    return test_and_change_bit(nr, addr);
+}
+
+static __inline__ int synch_const_test_bit(int nr, const volatile void * addr)
+{
+    return test_bit(nr, addr);
+}
+
+static __inline__ int synch_var_test_bit(int nr, volatile void * addr)
+{
+    return test_bit(nr, addr);
+}
+
+#define synch_cmpxchg	ia64_cmpxchg4_acq
+
+#define synch_test_bit(nr,addr) \
+(__builtin_constant_p(nr) ? \
+ synch_const_test_bit((nr),(addr)) : \
+ synch_var_test_bit((nr),(addr)))
+
+#define synch_cmpxchg_subword synch_cmpxchg
+
+#endif /* __XEN_SYNCH_BITOPS_H__ */