--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/sparc/vm/registerMap_sparc.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,53 @@
+/*
+ * Copyright 1998-2007 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.
+ *
+ */
+
+// machine-dependent implemention for register maps
+  friend class frame;
+
+ private:
+  intptr_t* _window;         // register window save area (for L and I regs)
+  intptr_t* _younger_window; // previous save area (for O regs, if needed)
+
+  address pd_location(VMReg reg) const;
+  void pd_clear();
+  void pd_initialize_from(const RegisterMap* map) {
+    _window         = map->_window;
+    _younger_window = map->_younger_window;
+    _location_valid[0] = 0;  // avoid the shift_individual_registers game
+  }
+  void pd_initialize() {
+    _window = NULL;
+    _younger_window = NULL;
+    _location_valid[0] = 0;  // avoid the shift_individual_registers game
+  }
+  void shift_window(intptr_t* sp, intptr_t* younger_sp) {
+    _window         = sp;
+    _younger_window = younger_sp;
+    // Throw away locations for %i, %o, and %l registers:
+    // But do not throw away %g register locs.
+    if (_location_valid[0] != 0)  shift_individual_registers();
+  }
+  void shift_individual_registers();
+  // When popping out of compiled frames, we make all IRegs disappear.
+  void make_integer_regs_unsaved() { _location_valid[0] = 0; }