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diff --git a/src/base/flags.hh b/src/base/flags.hh
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+/*
+ * Copyright (c) 2008 The Hewlett-Packard Development Company
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Nathan Binkert
+ */
+
+#ifndef __BASE_FLAGS_HH__
+#define __BASE_FLAGS_HH__
+
+template <typename T>
+class Flags
+{
+  private:
+    T _flags;
+
+  public:
+    typedef T Type;
+    Flags() : _flags(0) {}
+    Flags(Type flags) : _flags(flags) {}
+
+    operator const Type() const { return _flags; }
+
+    template <typename U> 
+    const Flags<T> &
+    operator=(const Flags<U> &flags)
+    {
+        _flags = flags._flags;
+        return *this;
+    }
+
+    const Flags<T> &
+    operator=(T flags)
+    {
+        _flags = flags;
+        return *this;
+    }
+    
+    bool any() const { return _flags; }
+    bool any(Type flags) const { return (_flags & flags); }
+    bool all() const { return (~_flags); }
+    bool all(Type flags) const { return (_flags & flags) != flags; }
+    bool none() const { return _flags == 0; }
+    bool none(Type flags) const { return (_flags & flags) == 0; }
+    bool exact(Type flags) const { return _flags = flags; }
+    void clear() { _flags = 0; }
+    void clear(Type flags) { _flags &= ~flags; }
+    void reset(Type flags) { _flags = flags;}
+    void set(Type flags) { _flags |= flags; }
+    void set(Type f, bool val) { _flags = (_flags & f) | (val ? f : 0); }
+    void
+    update(Type flags, Type mask)
+    {
+        _flags = (_flags & ~mask) | (flags & mask);
+    }
+};
+
+#endif // __BASE_FLAGS_HH__