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diff --git a/src/dev/x86/X86IntPin.py b/src/dev/x86/X86IntPin.py
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+++ b/src/dev/x86/X86IntPin.py
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+# Copyright (c) 2008 The Regents of The University of Michigan
+# 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: Gabe Black
+
+from m5.params import *
+from m5.SimObject import SimObject
+
+# A generic pin to drive an interrupt signal generated by a device.
+class X86IntSourcePin(SimObject):
+    type = 'X86IntSourcePin'
+    cxx_class = 'X86ISA::IntSourcePin'
+
+# A generic pin to receive an interrupt signal generated by another device.
+class X86IntSinkPin(SimObject):
+    type = 'X86IntSinkPin'
+    cxx_class = 'X86ISA::IntSinkPin'
+
+    device = Param.SimObject("Device this pin belongs to")
+    number = Param.Int("The pin number on the device")
+
+# An interrupt line which is driven by a source pin and drives a sink pin.
+class X86IntLine(SimObject):
+    type = 'X86IntLine'
+    cxx_class = 'X86ISA::IntLine'
+
+    source = Param.X86IntSourcePin("Pin driving this line")
+    sink = Param.X86IntSinkPin("Pin driven by this line")