1 files changed, 104 insertions, 0 deletions
diff --git a/util/statetrace/arch/i386/tracechild.cc b/util/statetrace/arch/i386/tracechild.cc
new file mode 100644
index 000000000..0d868767c
--- /dev/null
+++ b/util/statetrace/arch/i386/tracechild.cc
@@ -0,0 +1,104 @@
+/*
+ * 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 "arch/i386/tracechild.hh"
+
+using namespace std;
+
+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);
+}
+
+TraceChild *
+genTraceChild()
+{
+    return new I386TraceChild;
+}