Move most of runtime/base to libartbase/base

Enforce the layering that code in runtime/base should not depend on
runtime by separating it into libartbase.  Some of the code in
runtime/base depends on the Runtime class, so it cannot be moved yet.
Also, some of the tests depend on CommonRuntimeTest, which itself needs
to be factored (in a subsequent CL).

Bug: 22322814
Test: make -j 50 checkbuild
      make -j 50 test-art-host

Change-Id: I8b096c1e2542f829eb456b4b057c71421b77d7e2
Merged-In: c431b9dc4b23cc950eb313695258df5d89f53b22

(cherry picked from commit c431b9dc4b23cc950eb313695258df5d89f53b22)

1 files changed, 38 insertions, 0 deletions

diff --git a/libartbase/base/file_magic.h b/libartbase/base/file_magic.h
new file mode 100644
index 0000000000..53f551cb3a
--- /dev/null
+++ b/libartbase/base/file_magic.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_FILE_MAGIC_H_
+#define ART_LIBARTBASE_BASE_FILE_MAGIC_H_
+
+#include <stdint.h>
+#include <string>
+
+#include "base/os.h"
+
+namespace art {
+
+// Open file and read magic number
+File OpenAndReadMagic(const char* filename, uint32_t* magic, std::string* error_msg);
+
+// Read magic number and reset pointer to SEEK_SET.
+bool ReadMagicAndReset(int fd, uint32_t* magic, std::string* error_msg);
+
+// Check whether the given magic matches a known file type.
+bool IsZipMagic(uint32_t magic);
+
+}  // namespace art
+
+#endif  // ART_LIBARTBASE_BASE_FILE_MAGIC_H_