src/cpu/x86/vm/stubRoutines_x86_64.hpp

rev 3149 : 7147740: add assertions to check stack alignment on VM entry from generated code (x64)
Summary: check stack alignment on VM entry on x64.
Reviewed-by:

@@ -39,10 +39,11 @@
 class x86 {
  friend class StubGenerator;
 
  private:
   static address _get_previous_fp_entry;
+  static address _get_previous_sp_entry;
   static address _verify_mxcsr_entry;
 
   static address _f2i_fixup;
   static address _f2l_fixup;
   static address _d2i_fixup;

@@ -59,10 +60,15 @@
   static address get_previous_fp_entry()
   {
     return _get_previous_fp_entry;
   }
 
+  static address get_previous_sp_entry()
+  {
+    return _get_previous_sp_entry;
+  }
+
   static address verify_mxcsr_entry()
   {
     return _verify_mxcsr_entry;
   }