--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/sparc/vm/javaFrameAnchor_sparc.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2002-2005 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.
+ *
+ */
+
+private:
+  volatile int _flags;
+
+public:
+
+   enum pd_Constants {
+     flushed = 1                                 // winodows have flushed
+   };
+
+  int flags(void)                                { return _flags; }
+  void set_flags(int flags)                      { _flags = flags; }
+
+  static ByteSize flags_offset()                 { return byte_offset_of(JavaFrameAnchor, _flags); }
+
+  // Each arch must define clear, copy
+  // These are used by objects that only care about:
+  //  1 - initializing a new state (thread creation, javaCalls)
+  //  2 - saving a current state (javaCalls)
+  //  3 - restoring an old state (javaCalls)
+
+  void clear(void) {
+    // clearing _last_Java_sp must be first
+    _last_Java_sp = NULL;
+    // fence?
+    _flags = 0;
+    _last_Java_pc = NULL;
+  }
+
+  void copy(JavaFrameAnchor* src) {
+    // In order to make sure the transition state is valid for "this"
+    // We must clear _last_Java_sp before copying the rest of the new data
+    //
+    // Hack Alert: Temporary bugfix for 4717480/4721647
+    // To act like previous version (pd_cache_state) don't NULL _last_Java_sp
+    // unless the value is changing
+    //
+    if (_last_Java_sp != src->_last_Java_sp)
+      _last_Java_sp = NULL;
+
+    _flags = src->_flags;
+    _last_Java_pc = src->_last_Java_pc;
+    // Must be last so profiler will always see valid frame if has_last_frame() is true
+    _last_Java_sp = src->_last_Java_sp;
+  }
+
+  // Is stack walkable
+  inline bool walkable( void) {
+        return _flags & flushed;
+  }
+
+  void make_walkable(JavaThread* thread);
+
+  void set_last_Java_sp(intptr_t* sp)            { _last_Java_sp = sp; }
+
+  // These are only used by friends
+private:
+
+  intptr_t* last_Java_sp() const {
+    // _last_Java_sp will always be a an unbiased stack pointer
+    // if is is biased then some setter screwed up. This is
+    // deadly.
+#ifdef _LP64
+    assert(((intptr_t)_last_Java_sp & 0xF) == 0, "Biased last_Java_sp");
+#endif
+    return _last_Java_sp;
+  }
+
+  void capture_last_Java_pc(intptr_t* sp);
+
+  void set_window_flushed( void) {
+    _flags |= flushed;
+    OrderAccess::fence();
+  }