diff -r 000000000000 -r 4f2f89ce4247 JavaScriptCore/interpreter/RegisterFile.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/interpreter/RegisterFile.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "RegisterFile.h"
+
+#include "JSGlobalObject.h"
+
+namespace JSC {
+
+RegisterFile::~RegisterFile()
+{
+#if HAVE(MMAP)
+    munmap(m_buffer, ((m_max - m_start) + m_maxGlobals) * sizeof(Register));
+#elif HAVE(VIRTUALALLOC)
+#if OS(WINCE)
+    VirtualFree(m_buffer, DWORD(m_commitEnd) - DWORD(m_buffer), MEM_DECOMMIT);
+#endif
+    VirtualFree(m_buffer, 0, MEM_RELEASE);
+#else
+    fastFree(m_buffer);
+#endif
+}
+
+void RegisterFile::releaseExcessCapacity()
+{
+#if HAVE(MMAP) && HAVE(MADV_FREE) && !HAVE(VIRTUALALLOC)
+    while (madvise(m_start, (m_max - m_start) * sizeof(Register), MADV_FREE) == -1 && errno == EAGAIN) { }
+#elif HAVE(VIRTUALALLOC)
+    VirtualFree(m_start, (m_max - m_start) * sizeof(Register), MEM_DECOMMIT);
+    m_commitEnd = m_start;
+#endif
+    m_maxUsed = m_start;
+}
+
+void RegisterFile::setGlobalObject(JSGlobalObject* globalObject)
+{
+    m_globalObject = globalObject;
+}
+
+bool RegisterFile::clearGlobalObject(JSGlobalObject* globalObject)
+{
+    return m_globalObject.clear(globalObject);
+}
+
+JSGlobalObject* RegisterFile::globalObject()
+{
+    return m_globalObject.get();
+}
+
+} // namespace JSC