1 files changed, 120 insertions, 0 deletions
diff --git a/util/statetrace/arch/tracechild_i386.cc b/util/statetrace/arch/tracechild_i386.cc
new file mode 100644
index 000000000..14c22c7f0
--- /dev/null
+++ b/util/statetrace/arch/tracechild_i386.cc
@@ -0,0 +1,120 @@
+/*
+ * 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
+ */
+
+#include <iostream>
+#include <errno.h>
+#include <sys/ptrace.h>
+#include <stdint.h>
+
+#include "tracechild_i386.hh"
+
+using namespace std;
+
+char * I386TraceChild::regNames[numregs] = {
+                //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"};
+
+int64_t I386TraceChild::getRegs(user_regs_struct & myregs, int num)
+{
+        assert(num < numregs && num >= 0);
+        switch(num)
+        {
+                //GPRs
+                case EAX: return myregs.eax;
+                case EBX: return myregs.ebx;
+                case ECX: return myregs.ecx;
+                case EDX: return myregs.edx;
+                //Index registers
+                case ESI: return myregs.esi;
+                case EDI: return myregs.edi;
+                //Base pointer and stack pointer
+                case EBP: return myregs.ebp;
+                case ESP: return myregs.esp;
+                //Segmentation registers
+                case CS: return myregs.cs;
+                case DS: return myregs.ds;
+                case ES: return myregs.es;
+                case FS: return myregs.fs;
+                case GS: return myregs.gs;
+                case SS: return myregs.ss;
+                //PC
+                case EIP: return myregs.eip;
+                default:
+                        assert(0);
+                        return 0;
+        }
+}
+
+bool I386TraceChild::update(int pid)
+{
+        oldregs = regs;
+        if(ptrace(PTRACE_GETREGS, pid, 0, &regs) != 0)
+                return false;
+        for(unsigned int x = 0; x < numregs; x++)
+        {
+                regDiffSinceUpdate[x] =
+                        (getRegVal(x) != getOldRegVal(x));
+        }
+}
+
+I386TraceChild::I386TraceChild()
+{
+        for(unsigned int x = 0; x < numregs; x++)
+                regDiffSinceUpdate[x] = false;
+}
+
+int64_t I386TraceChild::getRegVal(int num)
+{
+        return getRegs(regs, num);
+}
+
+int64_t I386TraceChild::getOldRegVal(int num)
+{
+        return getRegs(oldregs, num);
+}
+
+char * I386TraceChild::printReg(int num)
+{
+        sprintf(printBuffer, "0x%08X", getRegVal(num));
+        return printBuffer;
+}
+
+TraceChild * genTraceChild()
+{
+        return new I386TraceChild;
+}