--- old/src/cpu/x86/vm/c1_FrameMap_x86.hpp	2010-10-28 13:47:22.000000000 +0200
+++ new/src/cpu/x86/vm/c1_FrameMap_x86.hpp	2010-10-28 13:47:22.000000000 +0200
@@ -22,6 +22,9 @@
  *
  */
 
+#ifndef CPU_X86_VM_C1_FRAMEMAP_X86_HPP
+#define CPU_X86_VM_C1_FRAMEMAP_X86_HPP
+
 //  On i486 the frame looks as follows:
 //
 //  +-----------------------------+---------+----------------------------------------+----------------+-----------
@@ -126,3 +129,5 @@
     assert(i >= 0 && i < nof_caller_save_xmm_regs, "out of bounds");
     return _caller_save_xmm_regs[i];
   }
+
+#endif // CPU_X86_VM_C1_FRAMEMAP_X86_HPP