--- /dev/null	2009-10-08 09:48:12.966002103 +0100
+++ new/hotspot/src/cpu/zero/vm/frame_zero.hpp	2009-10-08 17:31:13.000000000 +0100
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2007, 2008, 2009 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.
+ *
+ */
+
+// A frame represents a physical stack frame on the Zero stack.
+
+ public:
+  enum {
+    pc_return_offset = 0
+  };
+
+  // Constructor
+ public:
+  frame(intptr_t* sp, intptr_t* fp);
+
+  // The sp of a Zero frame is the address of the highest word in
+  // that frame.  We keep track of the lowest address too, so the
+  // boundaries of the frame are available for debug printing.
+ private:
+  intptr_t* _fp;
+
+ public:
+  intptr_t* fp() const {
+    return _fp;
+  }
+
+#ifdef CC_INTERP
+  inline interpreterState get_interpreterState() const;
+#endif // CC_INTERP
+
+ public:
+  const ZeroFrame *zeroframe() const {
+    return (ZeroFrame *) sp();
+  }
+
+  const EntryFrame *zero_entryframe() const {
+    return zeroframe()->as_entry_frame();
+  }
+  const InterpreterFrame *zero_interpreterframe() const {
+    return zeroframe()->as_interpreter_frame();
+  }
+  const SharkFrame *zero_sharkframe() const {
+    return zeroframe()->as_shark_frame();
+  }
+
+ public:
+  bool is_fake_stub_frame() const;
+
+ public:
+  frame sender_for_fake_stub_frame(RegisterMap* map) const;
+
+ public:
+  void zero_print_on_error(int           index,
+                           outputStream* st,
+                           char*         buf,
+                           int           buflen) const;