6795913: A few remaining wrong casts need to be fixed for building hotspot successfully on Mac OS.

Summary: Use NULL_WORD in the places where intptr_t is expected due to incompatible types between intptr_t & int32_t
Reviewed-by: phh, coleenp, never

src/cpu/x86/vm/c1_Runtime1_x86.cpp

@@ -1393,7 +1393,7 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
         __ ret(0);
 
         __ bind(miss);
-        __ movptr(Address(rsp, (super_off) * VMRegImpl::stack_slot_size), 0); // result
+        __ movptr(Address(rsp, (super_off) * VMRegImpl::stack_slot_size), NULL_WORD); // result
         __ pop(rax);
         __ pop(rcx);
         __ pop(rsi);

src/cpu/x86/vm/interp_masm_x86_32.cpp

@@ -149,7 +149,7 @@ void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
   // Clean up tos value in the thread object
   movl(tos_addr,  (int32_t) ilgl);
   movptr(val_addr,  NULL_WORD);
-  NOT_LP64(movl(val_addr1, (int32_t)NULL_WORD));
+  NOT_LP64(movptr(val_addr1, NULL_WORD));
 }
 
 

src/cpu/x86/vm/interpreterRT_x86_32.cpp

@@ -110,7 +110,7 @@ class SlowSignatureHandler: public NativeSignatureIterator {
   virtual void pass_object() {
     // pass address of from
     intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
-    *_to++ = (*(intptr_t*)from_addr == 0) ? NULL : from_addr;
+    *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;
     debug_only(verify_tag(frame::TagReference));
     _from -= Interpreter::stackElementSize();
    }

src/cpu/x86/vm/stubGenerator_x86_32.cpp

@@ -407,7 +407,7 @@ class StubGenerator: public StubCodeGenerator {
     __ get_thread(rcx);
     __ pop(rdx);
     __ movptr(rax, Address(rcx, Thread::pending_exception_offset()));
-    __ movptr(Address(rcx, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
+    __ movptr(Address(rcx, Thread::pending_exception_offset()), NULL_WORD);
 
 #ifdef ASSERT
     // make sure exception is set

src/cpu/x86/vm/templateInterpreter_x86_32.cpp

@@ -382,7 +382,7 @@ void InterpreterGenerator::generate_counter_overflow(Label* do_continue) {
   // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp).
   // The call returns the address of the verified entry point for the method or NULL
   // if the compilation did not complete (either went background or bailed out).
-  __ movptr(rax, (int32_t)false);
+  __ movptr(rax, (intptr_t)false);
   __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax);
 
   __ movptr(rbx, Address(rbp, method_offset));   // restore methodOop

src/cpu/x86/vm/templateTable_x86_32.cpp

@@ -137,7 +137,7 @@ static void do_oop_store(InterpreterMacroAssembler* _masm,
         // Do the actual store
         // noreg means NULL
         if (val == noreg) {
-          __ movl(Address(rdx, 0), (int32_t)NULL_WORD);
+          __ movptr(Address(rdx, 0), NULL_WORD);
           // No post barrier for NULL
         } else {
           __ movl(Address(rdx, 0), val);
@@ -152,7 +152,7 @@ static void do_oop_store(InterpreterMacroAssembler* _masm,
     case BarrierSet::CardTableExtension:
       {
         if (val == noreg) {
-          __ movl(obj, NULL_WORD);
+          __ movptr(obj, NULL_WORD);
         } else {
           __ movl(obj, val);
           // flatten object address if needed
@@ -168,7 +168,7 @@ static void do_oop_store(InterpreterMacroAssembler* _masm,
     case BarrierSet::ModRef:
     case BarrierSet::Other:
       if (val == noreg) {
-        __ movl(obj, NULL_WORD);
+        __ movptr(obj, NULL_WORD);
       } else {
         __ movl(obj, val);
       }