--- a/src/hotspot/cpu/aarch64/interpreterRT_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/interpreterRT_aarch64.cpp
@@ -317,10 +317,10 @@
     _from -= Interpreter::stackElementSize;
 
     if (_num_int_args < Argument::n_int_register_parameters_c-1) {
-      *_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
+      *_int_args++ = (*from_addr == 0) ? 0 : (intptr_t)from_addr;
       _num_int_args++;
     } else {
-      *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+      *_to++ = (*from_addr == 0) ? 0 : (intptr_t) from_addr;
       _num_int_args++;
     }
   }
--- a/src/hotspot/share/oops/access.hpp
+++ b/src/hotspot/share/oops/access.hpp
@@ -295,8 +295,8 @@
   static inline void arraycopy(arrayOop src_obj, size_t src_offset_in_bytes,
                                arrayOop dst_obj, size_t dst_offset_in_bytes,
                                size_t length) {
-    AccessT::arraycopy(src_obj, src_offset_in_bytes, reinterpret_cast<const T*>(NULL),
-                       dst_obj, dst_offset_in_bytes, reinterpret_cast<T*>(NULL),
+    AccessT::arraycopy(src_obj, src_offset_in_bytes, reinterpret_cast<const T*>(0),
+                       dst_obj, dst_offset_in_bytes, reinterpret_cast<T*>(0),
                        length);
   }
 
@@ -304,7 +304,7 @@
   static inline void arraycopy_to_native(arrayOop src_obj, size_t src_offset_in_bytes,
                                          T* dst,
                                          size_t length) {
-    AccessT::arraycopy(src_obj, src_offset_in_bytes, reinterpret_cast<const T*>(NULL),
+    AccessT::arraycopy(src_obj, src_offset_in_bytes, reinterpret_cast<const T*>(0),
                        NULL, 0, dst,
                        length);
   }
@@ -314,7 +314,7 @@
                                            arrayOop dst_obj, size_t dst_offset_in_bytes,
                                            size_t length) {
     AccessT::arraycopy(NULL, 0, src,
-                       dst_obj, dst_offset_in_bytes, reinterpret_cast<T*>(NULL),
+                       dst_obj, dst_offset_in_bytes, reinterpret_cast<T*>(0),
                        length);
   }
 
@@ -321,8 +321,8 @@
   static inline bool oop_arraycopy(arrayOop src_obj, size_t src_offset_in_bytes,
                                    arrayOop dst_obj, size_t dst_offset_in_bytes,
                                    size_t length) {
-    return AccessT::oop_arraycopy(src_obj, src_offset_in_bytes, reinterpret_cast<const HeapWord*>(NULL),
-                                  dst_obj, dst_offset_in_bytes, reinterpret_cast<HeapWord*>(NULL),
+    return AccessT::oop_arraycopy(src_obj, src_offset_in_bytes, reinterpret_cast<const HeapWord*>(0),
+                                  dst_obj, dst_offset_in_bytes, reinterpret_cast<HeapWord*>(0),
                                   length);
   }
 
--- a/src/hotspot/cpu/x86/interpreterRT_x86_64.cpp
+++ b/src/hotspot/cpu/x86/interpreterRT_x86_64.cpp
@@ -443,10 +443,10 @@
     _from -= Interpreter::stackElementSize;
 
     if (_num_int_args < Argument::n_int_register_parameters_c-1) {
-      *_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
+      *_int_args++ = (*from_addr == 0) ? 0 : (intptr_t)from_addr;
       _num_int_args++;
     } else {
-      *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+      *_to++ = (*from_addr == 0) ? 0 : (intptr_t) from_addr;
     }
   }
 
--- a/src/hotspot/cpu/arm/interpreterRT_arm.cpp
+++ b/src/hotspot/cpu/arm/interpreterRT_arm.cpp
@@ -306,9 +306,9 @@
   virtual void pass_object() {
     intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
     if(_last_gp < GPR_PARAMS) {
-      _toGP[_last_gp++] = (*(intptr_t*)from_addr == 0) ? NULL : from_addr;
+      _toGP[_last_gp++] = (*(intptr_t*)from_addr == 0) ? 0 : from_addr;
     } else {
-      *_to++ = (*(intptr_t*)from_addr == 0) ? NULL : from_addr;
+      *_to++ = (*(intptr_t*)from_addr == 0) ? 0 : from_addr;
     }
     _from -= Interpreter::stackElementSize;
   }
--- a/src/hotspot/cpu/x86/interp_masm_x86.cpp
+++ b/src/hotspot/cpu/x86/interp_masm_x86.cpp
@@ -1122,7 +1122,7 @@
 
     bind(loop);
     // check if current entry is used
-    cmpptr(Address(rmon, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL);
+    cmpptr(Address(rmon, BasicObjectLock::obj_offset_in_bytes()), (int32_t) 0);
     jcc(Assembler::notEqual, exception);
 
     addptr(rmon, entry_size); // otherwise advance to next entry