--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/BasicCFrame.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.debugger.cdbg.basic;
+
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.debugger.cdbg.*;
+
+/** Basic implementation of the CFrame interface providing some of the
+    functionality in a platform-independent manner. */
+
+public abstract class BasicCFrame implements CFrame {
+  private CDebugger dbg;
+
+  protected BasicCFrame(CDebugger dbg) {
+    this.dbg = dbg;
+  }
+
+  protected CDebugger dbg() {
+    return dbg;
+  }
+
+  public LoadObject loadObjectForPC() {
+    return dbg.loadObjectContainingPC(pc());
+  }
+
+  public BlockSym blockForPC() {
+    LoadObject lo = loadObjectForPC();
+    if (lo == null) {
+      return null;
+    }
+    return lo.debugInfoForPC(pc());
+  }
+
+  public ClosestSymbol closestSymbolToPC() {
+    LoadObject lo = loadObjectForPC();
+    if (lo == null) {
+      return null;
+    }
+    return lo.closestSymbolToPC(pc());
+  }
+
+  public void iterateLocals(ObjectVisitor v) {
+    BlockSym block = blockForPC();
+    while (block != null) {
+      for (int i = 0; i < block.getNumLocals(); i++) {
+        final LocalSym local = block.getLocal(i);
+        Type t = local.getType();
+        // t should not be null, but be robust in case of bugs in
+        // debug info
+        if (t != null) {
+          t.iterateObject(localVariableBase().addOffsetTo(local.getFrameOffset()),
+                          v,
+                          new NamedFieldIdentifier() {
+                              public Type getType() {
+                                return local.getType();
+                              }
+
+                              public String getName() {
+                                return local.getName();
+                              }
+
+                              public String toString() {
+                                return getName();
+                              }
+                            });
+        }
+      }
+
+      block = block.getParent();
+    }
+  }
+}