6787106: Hotspot 32 bit build fails on platforms having different definitions...

6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
Summary: Avoid casting between int32_t and intptr_t specifically for MasmAssembler::movptr in 32 bit platforms.
Reviewed-by: jrose, kvn

src/cpu/x86/vm/assembler_x86.cpp

@@ -5212,15 +5212,15 @@ void MacroAssembler::pushptr(AddressLiteral src) {
 void MacroAssembler::reset_last_Java_frame(bool clear_fp,
                                            bool clear_pc) {
   // we must set sp to zero to clear frame
-  movptr(Address(r15_thread, JavaThread::last_Java_sp_offset()), (int32_t)NULL_WORD);
+  movptr(Address(r15_thread, JavaThread::last_Java_sp_offset()), NULL_WORD);
   // must clear fp, so that compiled frames are not confused; it is
   // possible that we need it only for debugging
   if (clear_fp) {
-    movptr(Address(r15_thread, JavaThread::last_Java_fp_offset()), (int32_t)NULL_WORD);
+    movptr(Address(r15_thread, JavaThread::last_Java_fp_offset()), NULL_WORD);
   }
 
   if (clear_pc) {
-    movptr(Address(r15_thread, JavaThread::last_Java_pc_offset()), (int32_t)NULL_WORD);
+    movptr(Address(r15_thread, JavaThread::last_Java_pc_offset()), NULL_WORD);
   }
 }
 
@@ -5670,7 +5670,7 @@ void MacroAssembler::call_VM_base(Register oop_result,
   // get oop result if there is one and reset the value in the thread
   if (oop_result->is_valid()) {
     movptr(oop_result, Address(java_thread, JavaThread::vm_result_offset()));
-    movptr(Address(java_thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+    movptr(Address(java_thread, JavaThread::vm_result_offset()), NULL_WORD);
     verify_oop(oop_result, "broken oop in call_VM_base");
   }
 }
@@ -6426,13 +6426,13 @@ void MacroAssembler::reset_last_Java_frame(Register java_thread, bool clear_fp,
     get_thread(java_thread);
   }
   // we must set sp to zero to clear frame
-  movptr(Address(java_thread, JavaThread::last_Java_sp_offset()), (int32_t)NULL_WORD);
+  movptr(Address(java_thread, JavaThread::last_Java_sp_offset()), NULL_WORD);
   if (clear_fp) {
-    movptr(Address(java_thread, JavaThread::last_Java_fp_offset()), (int32_t)NULL_WORD);
+    movptr(Address(java_thread, JavaThread::last_Java_fp_offset()), NULL_WORD);
   }
 
   if (clear_pc)
-    movptr(Address(java_thread, JavaThread::last_Java_pc_offset()), (int32_t)NULL_WORD);
+    movptr(Address(java_thread, JavaThread::last_Java_pc_offset()), NULL_WORD);
 
 }
 

src/cpu/x86/vm/c1_LIRAssembler_x86.cpp

@@ -779,7 +779,7 @@ void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmi
     case T_OBJECT:  // fall through
     case T_ARRAY:
       if (c->as_jobject() == NULL) {
-        __ movptr(as_Address(addr), (int32_t)NULL_WORD);
+        __ movptr(as_Address(addr), NULL_WORD);
       } else {
         if (is_literal_address(addr)) {
           ShouldNotReachHere();

src/cpu/x86/vm/c1_Runtime1_x86.cpp

@@ -78,10 +78,10 @@ int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address e
     movptr(rax, Address(thread, Thread::pending_exception_offset()));
     // make sure that the vm_results are cleared
     if (oop_result1->is_valid()) {
-      movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+      movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
     }
     if (oop_result2->is_valid()) {
-      movptr(Address(thread, JavaThread::vm_result_2_offset()), (int32_t)NULL_WORD);
+      movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
     }
     if (frame_size() == no_frame_size) {
       leave();
@@ -96,12 +96,12 @@ int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address e
   // get oop results if there are any and reset the values in the thread
   if (oop_result1->is_valid()) {
     movptr(oop_result1, Address(thread, JavaThread::vm_result_offset()));
-    movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+    movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
     verify_oop(oop_result1);
   }
   if (oop_result2->is_valid()) {
     movptr(oop_result2, Address(thread, JavaThread::vm_result_2_offset()));
-    movptr(Address(thread, JavaThread::vm_result_2_offset()), (int32_t)NULL_WORD);
+    movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
     verify_oop(oop_result2);
   }
   return call_offset;
@@ -728,8 +728,8 @@ void Runtime1::generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_map
 
   // clear exception fields in JavaThread because they are no longer needed
   // (fields must be cleared because they are processed by GC otherwise)
-  __ movptr(Address(thread, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
-  __ movptr(Address(thread, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(thread, JavaThread::exception_oop_offset()), NULL_WORD);
+  __ movptr(Address(thread, JavaThread::exception_pc_offset()), NULL_WORD);
 
   // pop the stub frame off
   __ leave();
@@ -878,7 +878,7 @@ OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
 
     // load and clear pending exception
     __ movptr(rax, Address(thread, Thread::pending_exception_offset()));
-    __ movptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
+    __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
 
     // check that there is really a valid exception
     __ verify_not_null_oop(rax);
@@ -971,14 +971,14 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
         // load pending exception oop into rax,
         __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset()));
         // clear pending exception
-        __ movptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
+        __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD);
 
         // load issuing PC (the return address for this stub) into rdx
         __ movptr(exception_pc, Address(rbp, 1*BytesPerWord));
 
         // make sure that the vm_results are cleared (may be unnecessary)
-        __ movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
-        __ movptr(Address(thread, JavaThread::vm_result_2_offset()), (int32_t)NULL_WORD);
+        __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
+        __ movptr(Address(thread, JavaThread::vm_result_2_offset()), NULL_WORD);
 
         // verify that that there is really a valid exception in rax,
         __ verify_not_null_oop(exception_oop);

src/cpu/x86/vm/interp_masm_x86_32.cpp

@@ -133,7 +133,7 @@ void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
                              + in_ByteSize(wordSize));
   switch (state) {
     case atos: movptr(rax, oop_addr);
-               movptr(oop_addr, (int32_t)NULL_WORD);
+               movptr(oop_addr, NULL_WORD);
                verify_oop(rax, state);                break;
     case ltos:
                movl(rdx, val_addr1);               // fall through
@@ -148,7 +148,7 @@ void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
   }
   // Clean up tos value in the thread object
   movl(tos_addr,  (int32_t) ilgl);
-  movptr(val_addr,  (int32_t)NULL_WORD);
+  movptr(val_addr,  NULL_WORD);
   NOT_LP64(movl(val_addr1, (int32_t)NULL_WORD));
 }
 
@@ -944,7 +944,7 @@ void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
     movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
 
     // Free entry
-    movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD);
+    movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
 
     if (UseBiasedLocking) {
       biased_locking_exit(obj_reg, header_reg, done);

src/cpu/x86/vm/interp_masm_x86_32.hpp

@@ -120,7 +120,7 @@ class InterpreterMacroAssembler: public MacroAssembler {
   void empty_expression_stack()                            {
        movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
       // NULL last_sp until next java call
-      movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+      movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   }
 
   // Tagged stack helpers for swap and dup

src/cpu/x86/vm/interpreterRT_x86_32.cpp

@@ -54,7 +54,7 @@ void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_
   __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
   Label L;
   __ jcc(Assembler::notZero, L);
-  __ movptr(temp(), ((int32_t)NULL_WORD));
+  __ movptr(temp(), NULL_WORD);
   __ bind(L);
   __ movptr(Address(to(), to_offset * wordSize), temp());
 }

src/cpu/x86/vm/runtime_x86_32.cpp

@@ -129,11 +129,11 @@ void OptoRuntime::generate_exception_blob() {
   // Get the exception pc in case we are deoptimized
   __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset()));
 #ifdef ASSERT
-  __ movptr(Address(rcx, JavaThread::exception_handler_pc_offset()), (int32_t)NULL_WORD);
-  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_handler_pc_offset()), NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD);
 #endif
   // Clear the exception oop so GC no longer processes it as a root.
-  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD);
 
   __ pop(rcx);
 

src/cpu/x86/vm/sharedRuntime_x86_32.cpp

@@ -1793,7 +1793,7 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
   // reset handle block
   __ movptr(rcx, Address(thread, JavaThread::active_handles_offset()));
 
-  __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD);
 
   // Any exception pending?
   __ cmpptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD);
@@ -1865,7 +1865,7 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
     // Save pending exception around call to VM (which contains an EXCEPTION_MARK)
 
     __ pushptr(Address(thread, in_bytes(Thread::pending_exception_offset())));
-    __ movptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD);
+    __ movptr(Address(thread, in_bytes(Thread::pending_exception_offset())), NULL_WORD);
 
 
     // should be a peal
@@ -2431,7 +2431,7 @@ void SharedRuntime::generate_deopt_blob() {
   __ get_thread(rdi);
   __ movptr(rdx, Address(rdi, JavaThread::exception_pc_offset()));
   __ movptr(Address(rbp, wordSize), rdx);
-  __ movptr(Address(rdi, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rdi, JavaThread::exception_pc_offset()), NULL_WORD);
 
 #ifdef ASSERT
   // verify that there is really an exception oop in JavaThread
@@ -2489,8 +2489,8 @@ void SharedRuntime::generate_deopt_blob() {
   __ jcc(Assembler::notEqual, noException);
   __ movptr(rax, Address(rcx, JavaThread::exception_oop_offset()));
   __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset()));
-  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD);
-  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD);
 
   __ verify_oop(rax);
 
@@ -2582,7 +2582,7 @@ void SharedRuntime::generate_deopt_blob() {
           rbx); // Make it walkable
 #else /* CC_INTERP */
   // This value is corrected by layout_activation_impl
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD );
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   __ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable
 #endif /* CC_INTERP */
   __ movptr(sp_temp, rsp);              // pass to next frame
@@ -2802,7 +2802,7 @@ void SharedRuntime::generate_uncommon_trap_blob() {
           rbx); // Make it walkable
 #else /* CC_INTERP */
   // This value is corrected by layout_activation_impl
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD );
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD );
   __ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable
 #endif /* CC_INTERP */
   __ movptr(sp_temp, rsp);              // pass to next frame
@@ -3020,7 +3020,7 @@ static RuntimeStub* generate_resolve_blob(address destination, const char* name)
   // exception pending => remove activation and forward to exception handler
 
   __ get_thread(thread);
-  __ movptr(Address(thread, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD);
   __ movptr(rax, Address(thread, Thread::pending_exception_offset()));
   __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
 

src/cpu/x86/vm/stubGenerator_x86_64.cpp

@@ -472,7 +472,7 @@ class StubGenerator: public StubCodeGenerator {
     // setup rax & rdx, remove return address & clear pending exception
     __ pop(rdx);
     __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset()));
-    __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int)NULL_WORD);
+    __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
 
 #ifdef ASSERT
     // make sure exception is set
@@ -954,9 +954,9 @@ class StubGenerator: public StubCodeGenerator {
     __ jcc(Assembler::zero, exit); // if obj is NULL it is OK
     // Check if the oop is in the right area of memory
     __ movptr(c_rarg2, rax);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_oop_mask());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask());
     __ andptr(c_rarg2, c_rarg3);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_oop_bits());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits());
     __ cmpptr(c_rarg2, c_rarg3);
     __ jcc(Assembler::notZero, error);
 
@@ -969,9 +969,9 @@ class StubGenerator: public StubCodeGenerator {
     __ jcc(Assembler::zero, error); // if klass is NULL it is broken
     // Check if the klass is in the right area of memory
     __ mov(c_rarg2, rax);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_mask());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask());
     __ andptr(c_rarg2, c_rarg3);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_bits());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits());
     __ cmpptr(c_rarg2, c_rarg3);
     __ jcc(Assembler::notZero, error);
 
@@ -980,9 +980,9 @@ class StubGenerator: public StubCodeGenerator {
     __ testptr(rax, rax);
     __ jcc(Assembler::zero, error); // if klass' klass is NULL it is broken
     // Check if the klass' klass is in the right area of memory
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_mask());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask());
     __ andptr(rax, c_rarg3);
-    __ movptr(c_rarg3, (int64_t) Universe::verify_klass_bits());
+    __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits());
     __ cmpptr(rax, c_rarg3);
     __ jcc(Assembler::notZero, error);
 

src/cpu/x86/vm/templateInterpreter_x86_32.cpp

@@ -110,7 +110,7 @@ address TemplateInterpreterGenerator::generate_exception_handler_common(const ch
     if (message != NULL) {
       __ lea(rbx, ExternalAddress((address)message));
     } else {
-      __ movptr(rbx, (int32_t)NULL_WORD);
+      __ movptr(rbx, NULL_WORD);
     }
     __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx);
   }
@@ -123,7 +123,7 @@ address TemplateInterpreterGenerator::generate_exception_handler_common(const ch
 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
   address entry = __ pc();
   // NULL last_sp until next java call
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   __ dispatch_next(state);
   return entry;
 }
@@ -176,7 +176,7 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
   // Restore stack bottom in case i2c adjusted stack
   __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
   // and NULL it as marker that rsp is now tos until next java call
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
 
   __ restore_bcp();
   __ restore_locals();
@@ -211,7 +211,7 @@ address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, i
 
   // The stack is not extended by deopt but we must NULL last_sp as this
   // entry is like a "return".
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   __ restore_bcp();
   __ restore_locals();
   // handle exceptions
@@ -1028,7 +1028,7 @@ address InterpreterGenerator::generate_native_entry(bool synchronized) {
 
   // reset handle block
   __ movptr(t, Address(thread, JavaThread::active_handles_offset()));
-  __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+  __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD);
 
   // If result was an oop then unbox and save it in the frame
   { Label L;
@@ -1488,7 +1488,7 @@ void TemplateInterpreterGenerator::generate_throw_exception() {
 
   // Restore sp to interpreter_frame_last_sp even though we are going
   // to empty the expression stack for the exception processing.
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
   // rax,: exception
   // rdx: return address/pc that threw exception
   __ restore_bcp();                              // rsi points to call/send
@@ -1608,7 +1608,7 @@ void TemplateInterpreterGenerator::generate_throw_exception() {
   __ reset_last_Java_frame(rcx, true, true);
   // Restore the last_sp and null it out
   __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
-  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+  __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
 
   __ restore_bcp();
   __ restore_locals();
@@ -1636,7 +1636,7 @@ void TemplateInterpreterGenerator::generate_throw_exception() {
   // restore exception
   __ get_thread(rcx);
   __ movptr(rax, Address(rcx, JavaThread::vm_result_offset()));
-  __ movptr(Address(rcx, JavaThread::vm_result_offset()), (int32_t)NULL_WORD);
+  __ movptr(Address(rcx, JavaThread::vm_result_offset()), NULL_WORD);
   __ verify_oop(rax);
 
   // Inbetween activations - previous activation type unknown yet

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), NULL_WORD);
+          __ movl(Address(rdx, 0), (int32_t)NULL_WORD);
           // No post barrier for NULL
         } else {
           __ movl(Address(rdx, 0), val);

src/cpu/x86/vm/x86_32.ad

@@ -3371,7 +3371,7 @@ encode %{
          masm.movptr(Address(boxReg, 0), 3) ;            // results in ST-before-CAS penalty
          masm.get_thread (scrReg) ; 
          masm.movptr(boxReg, tmpReg);                    // consider: LEA box, [tmp-2] 
-         masm.movptr(tmpReg, 0);                         // consider: xor vs mov
+         masm.movptr(tmpReg, NULL_WORD);                 // consider: xor vs mov
          if (os::is_MP()) { masm.lock(); } 
          masm.cmpxchgptr(scrReg, Address(boxReg, ObjectMonitor::owner_offset_in_bytes()-2)) ; 
       } else 
@@ -3387,7 +3387,7 @@ encode %{
 
          if ((EmitSync & 64) == 0) {
            // Optimistic form: consider XORL tmpReg,tmpReg
-           masm.movptr(tmpReg, 0 ) ; 
+           masm.movptr(tmpReg, NULL_WORD) ; 
          } else { 
            // Can suffer RTS->RTO upgrades on shared or cold $ lines
            // Test-And-CAS instead of CAS
@@ -3587,7 +3587,7 @@ encode %{
          masm.orptr(boxReg, Address (tmpReg, ObjectMonitor::EntryList_offset_in_bytes()-2)) ; 
          masm.orptr(boxReg, Address (tmpReg, ObjectMonitor::cxq_offset_in_bytes()-2)) ; 
          masm.jccb  (Assembler::notZero, DONE_LABEL) ; 
-         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), 0) ; 
+         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), NULL_WORD) ; 
          masm.jmpb  (DONE_LABEL) ; 
       } else { 
          masm.xorptr(boxReg, Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2)) ;  
@@ -3596,7 +3596,7 @@ encode %{
          masm.movptr(boxReg, Address (tmpReg, ObjectMonitor::EntryList_offset_in_bytes()-2)) ; 
          masm.orptr(boxReg, Address (tmpReg, ObjectMonitor::cxq_offset_in_bytes()-2)) ; 
          masm.jccb  (Assembler::notZero, CheckSucc) ; 
-         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), 0) ; 
+         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), NULL_WORD) ; 
          masm.jmpb  (DONE_LABEL) ; 
       }
 
@@ -3644,7 +3644,7 @@ encode %{
          // We currently use (3), although it's likely that switching to (2)
          // is correct for the future.
             
-         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), 0) ; 
+         masm.movptr(Address (tmpReg, ObjectMonitor::owner_offset_in_bytes()-2), NULL_WORD) ; 
          if (os::is_MP()) { 
             if (VM_Version::supports_sse2() && 1 == FenceInstruction) { 
               masm.mfence();

src/share/vm/utilities/globalDefinitions_gcc.hpp

@@ -116,7 +116,9 @@
   #ifdef _LP64
     #define NULL_WORD  0L
   #else
-    #define NULL_WORD  0
+    // Cast 0 to intptr_t rather than int32_t since they are not the same type
+    // on platforms such as Mac OS X.
+    #define NULL_WORD  ((intptr_t)0)
   #endif
 #else
   #define NULL_WORD  NULL

src/share/vm/utilities/globalDefinitions_sparcWorks.hpp

@@ -115,7 +115,9 @@
   #ifdef _LP64
     #define NULL_WORD  0L
   #else
-    #define NULL_WORD  0
+    // Cast 0 to intptr_t rather than int32_t since they are not the same type
+    // on some platforms.
+    #define NULL_WORD  ((intptr_t)0)
   #endif
 #else
   #define NULL_WORD  NULL