Add --image-classes to dex2oat

Change-Id: Ia88f9d302e0f9cd72be2199ee46d212d99864c67
diff --git a/src/primitive.cc b/src/primitive.cc
new file mode 100644
index 0000000..16ca0fe
--- /dev/null
+++ b/src/primitive.cc
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "primitive.h"
+
+namespace art {
+
+static const char* kTypeNames[] = {
+  "PrimNot",
+  "PrimBoolean",
+  "PrimByte",
+  "PrimChar",
+  "PrimShort",
+  "PrimInt",
+  "PrimLong",
+  "PrimFloat",
+  "PrimDouble",
+  "PrimVoid",
+};
+std::ostream& operator<<(std::ostream& os, const Primitive::Type& type) {
+  int32_t int_type = static_cast<int32_t>(type);
+  if (type >= Primitive::kPrimNot && type <= Primitive::kPrimVoid) {
+    os << kTypeNames[int_type];
+  } else {
+    os << "Type[" << int_type << "]";
+  }
+  return os;
+}
+
+}  // namespace art