Generate first ARM assembler test and execute (simulate) it.

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"
 #include "vm/virtual_memory.h"
 
 namespace dart {
 
 #define __ assembler->
 
 
 ASSEMBLER_TEST_GENERATE(Simple, assembler) {
-  UNIMPLEMENTED();
+  __ mov(R0, ShifterOperand(42));
+  __ mov(PC, ShifterOperand(LR));
 }
 
 
 ASSEMBLER_TEST_RUN(Simple, entry) {
   typedef int (*SimpleCode)();
-  EXPECT_EQ(42, reinterpret_cast<SimpleCode>(entry)());
+  EXPECT_EQ(42, EXECUTE_TEST_CODE_INT32(SimpleCode, entry));
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM