--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/zero/vm/sharkFrame_zero.hpp	Tue Oct 13 12:04:21 2009 -0700
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2008 Red Hat, Inc.
+ * 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.
+ *
+ */
+
+// |  ...               |
+// +--------------------+  ------------------
+// | stack slot n-1     |       low addresses
+// |  ...               |
+// | stack slot 0       |
+// | monitor m-1        |
+// |  ...               |
+// | monitor 0          |
+// | oop_tmp            |
+// | method             |
+// | unextended_sp      |
+// | pc                 |
+// | frame_type         |
+// | next_frame         |      high addresses
+// +--------------------+  ------------------
+// |  ...               |
+
+class SharkFrame : public ZeroFrame {
+  friend class SharkFunction;
+
+ private:
+  SharkFrame() : ZeroFrame() {
+    ShouldNotCallThis();
+  }
+
+ protected:
+  enum Layout {
+    pc_off = jf_header_words,
+    unextended_sp_off,
+    method_off,
+    oop_tmp_off,
+    header_words
+  };
+
+ public:
+  address pc() const {
+    return (address) value_of_word(pc_off);
+  }
+
+  intptr_t* unextended_sp() const {
+    return (intptr_t *) value_of_word(unextended_sp_off);
+  }
+
+  methodOop method() const {
+    return (methodOop) value_of_word(method_off);
+  }
+
+ public:
+  void identify_word(int   frame_index,
+                     int   offset,
+                     char* fieldbuf,
+                     char* valuebuf,
+                     int   buflen) const;
+};