1 files changed, 46 insertions, 0 deletions
diff --git a/src/sync/atomic/64bit_arm.go b/src/sync/atomic/64bit_arm.go
new file mode 100644
index 000000000..c08f214c7
--- /dev/null
+++ b/src/sync/atomic/64bit_arm.go
@@ -0,0 +1,46 @@
+// Copyright 2012 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package atomic
+
+func loadUint64(addr *uint64) (val uint64) {
+	for {
+		val = *addr
+		if CompareAndSwapUint64(addr, val, val) {
+			break
+		}
+	}
+	return
+}
+
+func storeUint64(addr *uint64, val uint64) {
+	for {
+		old := *addr
+		if CompareAndSwapUint64(addr, old, val) {
+			break
+		}
+	}
+	return
+}
+
+func addUint64(val *uint64, delta uint64) (new uint64) {
+	for {
+		old := *val
+		new = old + delta
+		if CompareAndSwapUint64(val, old, new) {
+			break
+		}
+	}
+	return
+}
+
+func swapUint64(addr *uint64, new uint64) (old uint64) {
+	for {
+		old = *addr
+		if CompareAndSwapUint64(addr, old, new) {
+			break
+		}
+	}
+	return
+}