diff -r 60bfce711da4 -r 6bdd6923ba16 src/share/vm/runtime/os.hpp
--- a/src/share/vm/runtime/os.hpp	Mon Mar 23 10:42:20 2009 -0400
+++ b/src/share/vm/runtime/os.hpp	Wed Mar 25 14:19:20 2009 -0400
@@ -202,8 +202,10 @@
   static char*  attempt_reserve_memory_at(size_t bytes, char* addr);
   static void   split_reserved_memory(char *base, size_t size,
                                       size_t split, bool realloc);
-  static bool   commit_memory(char* addr, size_t bytes);
-  static bool   commit_memory(char* addr, size_t size, size_t alignment_hint);
+  static bool   commit_memory(char* addr, size_t bytes,
+                              bool executable = false);
+  static bool   commit_memory(char* addr, size_t size, size_t alignment_hint,
+                              bool executable = false);
   static bool   uncommit_memory(char* addr, size_t bytes);
   static bool   release_memory(char* addr, size_t bytes);
 
@@ -243,7 +245,8 @@
 
   static char*  non_memory_address_word();
   // reserve, commit and pin the entire memory region
-  static char*  reserve_memory_special(size_t size, char* addr = NULL);
+  static char*  reserve_memory_special(size_t size, char* addr = NULL,
+                bool executable = false);
   static bool   release_memory_special(char* addr, size_t bytes);
   static bool   large_page_init();
   static size_t large_page_size();