--- a/src/hotspot/cpu/aarch64/gc/shared/modRefBarrierSetAssembler_aarch64.hpp	Wed Apr 11 10:05:02 2018 -0400
+++ b/src/hotspot/cpu/aarch64/gc/shared/modRefBarrierSetAssembler_aarch64.hpp	Wed Apr 11 16:07:42 2018 +0200
@@ -28,6 +28,10 @@
 #include "asm/macroAssembler.hpp"
 #include "gc/shared/barrierSetAssembler.hpp"
 
+// The ModRefBarrierSetAssembler filters away accesses on BasicTypes other
+// than T_OBJECT/T_ARRAY (oops). The oop accesses call one of the protected
+// accesses, which are overridden in the concrete BarrierSetAssembler.
+
 class ModRefBarrierSetAssembler: public BarrierSetAssembler {
 protected:
   virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
@@ -35,11 +39,16 @@
   virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
                                                 Register start, Register end, Register tmp, RegSet saved_regs) {}
 
+  virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
+                            Address dst, Register val, Register tmp1, Register tmp2);
+
 public:
   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
                                   Register addr, Register count, RegSet saved_regs);
   virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
                                   Register start, Register end, Register tmp, RegSet saved_regs);
+  virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
+                        Address dst, Register val, Register tmp1, Register tmp2);
 };
 
 #endif // CPU_AARCH64_GC_SHARED_MODREFBARRIERSETASSEMBLER_AARCH64_HPP