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diff --git a/util/statetrace/arch/i686/tracechild.hh b/util/statetrace/arch/i686/tracechild.hh
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+++ b/util/statetrace/arch/i686/tracechild.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_I686_HH
+#define REGSTATE_I686_HH
+
+#include <sys/user.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <cassert>
+#include <string>
+
+#include "base/tracechild.hh"
+
+class I686TraceChild : 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:
+    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:
+
+    I686TraceChild();
+
+    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 i686 initial state not yet implemented"
+               << std::endl;
+        return output;
+    }
+};
+
+#endif