--- old/src/hotspot/os_cpu/bsd_x86/os_bsd_x86.hpp	2020-07-18 13:37:21.606533627 -0700
+++ new/src/hotspot/os_cpu/bsd_x86/os_bsd_x86.hpp	2020-07-18 13:37:21.408533617 -0700
@@ -27,6 +27,7 @@
 
   static void setup_fpu();
   static bool supports_sse();
+  static juint cpu_microcode_revision();
 
   static jlong rdtsc();