--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/ia64/IA64CurrentFrameGuess.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2003 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.runtime.ia64;
+
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.debugger.ia64.*;
+import sun.jvm.hotspot.code.*;
+import sun.jvm.hotspot.interpreter.*;
+import sun.jvm.hotspot.runtime.*;
+
+/** <P> Should be able to be used on all ia64 platforms we support
+    (Win32, Linux) to implement JavaThread's
+    "currentFrameGuess()" functionality. Input is an IA64ThreadContext;
+    output is SP, FP, and PC for an IA64Frame. Instantiation of the
+    IA64Frame is left to the caller, since we may need to subclass
+    IA64Frame to support signal handler frames on Unix platforms. </P>
+
+    <P> This is pretty much impossible on ia64.
+    </P> */
+
+public class IA64CurrentFrameGuess {
+  private IA64ThreadContext context;
+  private JavaThread       thread;
+  private Address          spFound;
+  private Address          fpFound;
+  private Address          pcFound;
+
+  private static final boolean DEBUG = false;
+
+  public IA64CurrentFrameGuess(IA64ThreadContext context,
+                              JavaThread thread) {
+    this.context = context;
+    this.thread  = thread;
+  }
+
+  /** Returns false if not able to find a frame within a reasonable range. */
+  public boolean run(long regionInBytesToSearch) {
+    /*
+      Without using the stack walking library this is not possible on ia64.
+      There is also the issue of walking dynamic code where there is no
+      stack walking info generated.
+    */
+    return false;
+  }
+
+  public Address getSP() { return null; }
+  public Address getFP() { return null; }
+  /** May be null if getting values from thread-local storage; take
+      care to call the correct IA64Frame constructor to recover this if
+      necessary */
+  public Address getPC() { return null; }
+
+  private void setValues(Address sp, Address fp, Address pc) {
+    spFound = sp;
+    fpFound = fp;
+    pcFound = pc;
+  }
+}