Implement write barrier on ARM.

runtime/vm/assembler_test.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/assembler.h"
 #include "vm/globals.h"
 #include "vm/os.h"
+#include "vm/simulator.h"
 #include "vm/unit_test.h"
 #include "vm/virtual_memory.h"
 
 namespace dart {
 
-#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
+#if defined(TARGET_ARCH_IA32) ||                                               \
+    defined(TARGET_ARCH_X64) ||                                                \
+    defined(TARGET_ARCH_ARM)
 
 ASSEMBLER_TEST_EXTERN(StoreIntoObject);
 
 ASSEMBLER_TEST_RUN(StoreIntoObject, test) {
+#if defined(USING_SIMULATOR)
+#define test_code(ctx, value, growable_array)                                  \
+  Simulator::Current()->Call(                                                  \
+      bit_cast<int32_t, uword>(test->entry()),                                 \
+      reinterpret_cast<int32_t>(ctx),                                          \
+      reinterpret_cast<int32_t>(value),                                        \
+      reinterpret_cast<int32_t>(growable_array),                               \
+      0)
+#else
   typedef void (*StoreData)(RawContext* ctx,
                             RawObject* value,
                             RawObject* growable_array);
   StoreData test_code = reinterpret_cast<StoreData>(test->entry());
+#endif
 
   const Array& old_array = Array::Handle(Array::New(3, Heap::kOld));
   const Array& new_array = Array::Handle(Array::New(3, Heap::kNew));
   const GrowableObjectArray& grow_old_array = GrowableObjectArray::Handle(
       GrowableObjectArray::New(old_array, Heap::kOld));
   const GrowableObjectArray& grow_new_array = GrowableObjectArray::Handle(
       GrowableObjectArray::New(old_array, Heap::kNew));
   Smi& smi = Smi::Handle();
   const Context& ctx = Context::Handle(Context::New(0));
 
@@ skipping 31 matching lines @@
   EXPECT(!Isolate::Current()->store_buffer_block()->Contains(
       reinterpret_cast<uword>(grow_new_array.raw())));
 
   // Store an old object into the new object.
   test_code(ctx.raw(), old_array.raw(), grow_new_array.raw());
   EXPECT(old_array.raw() == grow_new_array.data());
   EXPECT(!Isolate::Current()->store_buffer_block()->Contains(
       reinterpret_cast<uword>(grow_new_array.raw())));
 }
 
-#endif
+#endif  // TARGET_ARCH_IA32 || TARGET_ARCH_X64 || TARGET_ARCH_ARM
 
 }  // namespace dart