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diff --git a/src/arch/sparc/intregfile.cc b/src/arch/sparc/intregfile.cc
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+++ b/src/arch/sparc/intregfile.cc
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+/*
+ * Copyright (c) 2003-2005 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
+ *          Ali Saidi
+ */
+
+#include "arch/sparc/intregfile.hh"
+#include "base/trace.hh"
+#include "sim/serialize.hh"
+
+using namespace SparcISA;
+using namespace std;
+
+class Checkpoint;
+
+string SparcISA::getIntRegName(RegIndex index)
+{
+    static std::string intRegName[NumIntRegs] =
+        {"g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
+         "o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7",
+         "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
+         "i0", "i1", "i2", "i3", "i4", "i5", "i6", "i7"};
+    return intRegName[index];
+}
+
+int IntRegFile::flattenIndex(int reg)
+{
+    int flatIndex = offset[reg >> FrameOffsetBits]
+        | (reg & FrameOffsetMask);
+    DPRINTF(Sparc, "Flattened index %d into %d.\n", reg, flatIndex);
+    return flatIndex;
+}
+
+void IntRegFile::clear()
+{
+    int x;
+    for (x = 0; x < MaxGL; x++)
+        memset(regGlobals[x], 0, sizeof(regGlobals[x]));
+    for(int x = 0; x < 2 * NWindows; x++)
+        bzero(regSegments[x], sizeof(regSegments[x]));
+}
+
+IntRegFile::IntRegFile()
+{
+    offset[Globals] = 0;
+    regView[Globals] = regGlobals[0];
+    setCWP(0);
+    clear();
+}
+
+IntReg IntRegFile::readReg(int intReg)
+{
+    IntReg val =
+        regView[intReg >> FrameOffsetBits][intReg & FrameOffsetMask];
+    DPRINTF(Sparc, "Read register %d = 0x%x\n", intReg, val);
+    return val;
+}
+
+Fault IntRegFile::setReg(int intReg, const IntReg &val)
+{
+    if(intReg)
+        DPRINTF(Sparc, "Wrote register %d = 0x%x\n", intReg, val);
+    regView[intReg >> FrameOffsetBits][intReg & FrameOffsetMask] = val;
+    return NoFault;
+}
+
+//This doesn't effect the actual CWP register.
+//It's purpose is to adjust the view of the register file
+//to what it would be if CWP = cwp.
+void IntRegFile::setCWP(int cwp)
+{
+    int index = ((NWindows - cwp) % NWindows) * 2;
+    offset[Outputs] = FrameOffset + (index * RegsPerFrame);
+    offset[Locals] = FrameOffset + ((index+1) * RegsPerFrame);
+    offset[Inputs] = FrameOffset +
+        (((index+2) % (NWindows * 2)) * RegsPerFrame);
+    regView[Outputs] = regSegments[index];
+    regView[Locals] = regSegments[index+1];
+    regView[Inputs] = regSegments[(index+2) % (NWindows * 2)];
+
+    DPRINTF(Sparc, "Changed the CWP value to %d\n", cwp);
+}
+
+void IntRegFile::setGlobals(int gl)
+{
+    DPRINTF(Sparc, "Now using %d globals", gl);
+
+    regView[Globals] = regGlobals[gl];
+    offset[Globals] = RegGlobalOffset + gl * RegsPerFrame;
+}
+
+void IntRegFile::serialize(std::ostream &os)
+{
+    unsigned int x;
+    for(x = 0; x < MaxGL; x++)
+        SERIALIZE_ARRAY(regGlobals[x], RegsPerFrame);
+    for(x = 0; x < 2 * NWindows; x++)
+        SERIALIZE_ARRAY(regSegments[x], RegsPerFrame);
+}
+
+void IntRegFile::unserialize(Checkpoint *cp, const std::string &section)
+{
+    unsigned int x;
+    for(x = 0; x < MaxGL; x++)
+        UNSERIALIZE_ARRAY(regGlobals[x], RegsPerFrame);
+    for(unsigned int x = 0; x < 2 * NWindows; x++)
+        UNSERIALIZE_ARRAY(regSegments[x], RegsPerFrame);
+}