--- old/src/cpu/sparc/vm/assembler_sparc.hpp	2010-11-16 18:01:25.000000000 +0100
+++ new/src/cpu/sparc/vm/assembler_sparc.hpp	2010-11-16 18:01:25.000000000 +0100
@@ -22,6 +22,9 @@
  *
  */
 
+#ifndef CPU_SPARC_VM_ASSEMBLER_SPARC_HPP
+#define CPU_SPARC_VM_ASSEMBLER_SPARC_HPP
+
 class BiasedLockingCounters;
 
 // <sys/trap.h> promises that the system will not use traps 16-31
@@ -2500,3 +2503,5 @@
 // On RISC, there's no benefit to verifying instruction boundaries.
 inline bool AbstractAssembler::pd_check_instruction_mark() { return false; }
 #endif
+
+#endif // CPU_SPARC_VM_ASSEMBLER_SPARC_HPP