Implement write barrier on ARM.

runtime/vm/assembler_arm_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/globals.h"
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 1518 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(Muls, test) {
   EXPECT(test != NULL);
   typedef int (*Tst)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT32(Tst, test->entry()));
 }
 
 
+// Called from assembler_test.cc.
+// LR: return address.
+// R0: context.
+// R1: value.
+// R2: growable array.
+ASSEMBLER_TEST_GENERATE(StoreIntoObject, assembler) {
+  __ PushList((1 << CTX) | (1 << LR));
+  __ mov(CTX, ShifterOperand(R0));
+  __ StoreIntoObject(R2,
+                     FieldAddress(R2, GrowableObjectArray::data_offset()),
+                     R1);
+  __ PopList((1 << CTX) | (1 << LR));
+  __ Ret();
+}
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM