--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,49 @@
+/*
+ * Copyright 1999-2003 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.
+ *
+ */
+
+  // Processor dependent parts of ThreadLocalStorage
+
+#ifndef AMD64
+  // map stack pointer to thread pointer - see notes in threadLS_linux_x86.cpp
+  #define SP_BITLENGTH  32
+  #define PAGE_SHIFT    12
+  #define PAGE_SIZE     (1UL << PAGE_SHIFT)
+  static Thread* _sp_map[1UL << (SP_BITLENGTH - PAGE_SHIFT)];
+#endif // !AMD64
+
+public:
+
+#ifndef AMD64
+  static Thread** sp_map_addr() { return _sp_map; }
+#endif // !AMD64
+
+  static Thread* thread() {
+#ifdef AMD64
+    return (Thread*) os::thread_local_storage_at(thread_index());
+#else
+    uintptr_t sp;
+    __asm__ volatile ("movl %%esp, %0" : "=r" (sp));
+    return _sp_map[sp >> PAGE_SHIFT];
+#endif // AMD64
+  }