src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1999, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2010, Oracle and/or its affiliates. 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.

@@ -20,10 +20,13 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 
+#ifndef OS_CPU_LINUX_X86_VM_THREADLS_LINUX_X86_HPP
+#define OS_CPU_LINUX_X86_VM_THREADLS_LINUX_X86_HPP
+
   // Processor dependent parts of ThreadLocalStorage
 
 #ifndef AMD64
   // map stack pointer to thread pointer - see notes in threadLS_linux_x86.cpp
   #define SP_BITLENGTH  32

@@ -45,5 +48,7 @@
     uintptr_t sp;
     __asm__ volatile ("movl %%esp, %0" : "=r" (sp));
     return _sp_map[sp >> PAGE_SHIFT];
 #endif // AMD64
   }
+
+#endif // OS_CPU_LINUX_X86_VM_THREADLS_LINUX_X86_HPP