Fix vm code base so that it can be built for --arch=simarm (no snapshot yet).

runtime/vm/assembler_test.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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/unit_test.h"
 #include "vm/virtual_memory.h"
 
 namespace dart {
 
+#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
+
 ASSEMBLER_TEST_EXTERN(StoreIntoObject);
 
 ASSEMBLER_TEST_RUN(StoreIntoObject, entry) {
   typedef void (*StoreData)(RawContext* ctx,
                             RawObject* value,
                             RawObject* growable_array);
   StoreData test_code = reinterpret_cast<StoreData>(entry);
 
   const Array& old_array = Array::Handle(Array::New(3, Heap::kOld));
   const Array& new_array = Array::Handle(Array::New(3, Heap::kNew));
@@ skipping 45 matching lines @@
       GrowableObjectArray::data_offset() - kHeapObjectTag));
 
   // 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()) +
       GrowableObjectArray::data_offset() - kHeapObjectTag));
 }
 
+#endif
+
 }  // namespace dart