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diff --git a/src/systemc/core/port.hh b/src/systemc/core/port.hh
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+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * 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: Gabe Black
+ */
+
+#ifndef __SYSTEMC_CORE_PORT_HH__
+#define __SYSTEMC_CORE_PORT_HH__
+
+#include <list>
+#include <vector>
+
+#include "systemc/ext/core/sc_interface.hh"
+#include "systemc/ext/core/sc_port.hh"
+
+namespace sc_gem5
+{
+
+class StaticSensitivityPort;
+class StaticSensitivityFinder;
+
+class Port;
+
+extern std::list<Port *> allPorts;
+
+class Port
+{
+  private:
+    ::sc_core::sc_port_base *portBase;
+
+    bool finalized;
+    int _maxSize;
+    int _size;
+
+    void finalizePort(StaticSensitivityPort *port);
+    void finalizeFinder(StaticSensitivityFinder *finder);
+
+    void
+    addInterface(::sc_core::sc_interface *i)
+    {
+        _size++;
+        portBase->_gem5AddInterface(i);
+    }
+
+    void
+    addInterfaces(::sc_core::sc_port_base *pb)
+    {
+        for (int i = 0; i < pb->size(); i++)
+            addInterface(pb->_gem5Interface(i));
+    }
+
+    ::sc_core::sc_interface *
+    getInterface(int i)
+    {
+        return portBase->_gem5Interface(i);
+    }
+
+    struct Binding
+    {
+        explicit Binding(::sc_core::sc_interface *interface) :
+            interface(interface), port(nullptr)
+        {}
+
+        explicit Binding(::sc_core::sc_port_base *port) :
+            interface(nullptr), port(port)
+        {}
+
+        ::sc_core::sc_interface *interface;
+        ::sc_core::sc_port_base *port;
+    };
+
+    struct Sensitivity
+    {
+        Sensitivity(StaticSensitivityPort *port) :
+            port(port), finder(nullptr)
+        {}
+
+        Sensitivity(StaticSensitivityFinder *finder) :
+            port(nullptr), finder(finder)
+        {}
+
+        StaticSensitivityPort *port;
+        StaticSensitivityFinder *finder;
+    };
+
+    std::vector<Binding *> bindings;
+    std::vector<Sensitivity *> sensitivities;
+
+  public:
+    static Port *
+    fromPort(const ::sc_core::sc_port_base *pb)
+    {
+        return pb->_gem5Port;
+    }
+
+    ::sc_core::sc_port_base *sc_port_base() { return portBase; }
+
+    Port(::sc_core::sc_port_base *port_base, int max) :
+        portBase(port_base), finalized(false), _maxSize(max), _size(0)
+    {
+        allPorts.push_front(this);
+    }
+
+    void
+    bind(::sc_core::sc_interface *interface)
+    {
+        bindings.push_back(new Binding(interface));
+    }
+
+    void
+    bind(::sc_core::sc_port_base *port)
+    {
+        bindings.push_back(new Binding(port));
+    }
+
+    void sensitive(StaticSensitivityPort *port);
+    void sensitive(StaticSensitivityFinder *finder);
+
+    void finalize();
+
+    int size() { return _size; }
+    int maxSize() { return _maxSize; }
+};
+
+} // namespace sc_gem5
+
+#endif // __SYSTEMC_CORE_PORT_HH__