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diff --git a/util/statetrace/arch/tracechild_i386.hh b/util/statetrace/arch/tracechild_i386.hh
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+++ b/util/statetrace/arch/tracechild_i386.hh
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+/*
+ * Copyright (c) 2006 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
+ */
+
+#ifndef REGSTATE_I386_HH
+#define REGSTATE_I386_HH
+
+#include <linux/user.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <assert.h>
+#include <string>
+
+#include "tracechild.hh"
+
+class I386TraceChild : public TraceChild
+{
+public:
+        enum RegNum
+        {
+                //GPRs
+                EAX, EBX, ECX, EDX,
+                //Index registers
+                ESI, EDI,
+                //Base pointer and stack pointer
+                EBP, ESP,
+                //Segmentation registers
+                CS, DS, ES, FS, GS, SS,
+                //PC
+                EIP,
+                numregs
+        };
+private:
+        char printBuffer [256];
+        static char * regNames[numregs];
+        int64_t getRegs(user_regs_struct & myregs, int num);
+        user_regs_struct regs;
+        user_regs_struct oldregs;
+        bool regDiffSinceUpdate[numregs];
+
+protected:
+        bool update(int pid);
+
+public:
+
+        I386TraceChild();
+
+        int getNumRegs()
+        {
+                return numregs;
+        }
+
+        bool diffSinceUpdate(int num)
+        {
+                assert(num < numregs && num >= 0);
+                return regDiffSinceUpdate[num];
+        }
+
+        std::string getRegName(int num)
+        {
+                assert(num < numregs && num >= 0);
+                return regNames[num];
+        }
+
+        int64_t getRegVal(int num);
+        int64_t getOldRegVal(int num);
+        uint64_t getPC() {return getRegVal(EIP);}
+        uint64_t getSP() {return getRegVal(ESP);}
+        std::ostream & outputStartState(std::ostream & output)
+        {
+            output << "Printing i386 initial state not yet implemented"
+                << std::endl;
+            return output;
+        }
+
+        char * printReg(int num);
+};
+
+#endif