Create libelffile library for ELF file manipulation.

Move some of our tooling to library to make it reusable.

Remove MIPS support from the ELF builder.  This is slightly
easier than making it independent of the runtime.

Bug: 110133331
Test: test.py -b --host
Change-Id: I93343808d0e27ee8e1117e713a2503e8179fc245

1 files changed, 46 insertions, 0 deletions

diff --git a/libelffile/stream/file_output_stream.h b/libelffile/stream/file_output_stream.h
new file mode 100644
index 0000000000..e29930fece
--- /dev/null
+++ b/libelffile/stream/file_output_stream.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2013 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_LIBELFFILE_STREAM_FILE_OUTPUT_STREAM_H_
+#define ART_LIBELFFILE_STREAM_FILE_OUTPUT_STREAM_H_
+
+#include "base/os.h"
+
+#include "output_stream.h"
+
+namespace art {
+
+class FileOutputStream final : public OutputStream {
+ public:
+  explicit FileOutputStream(File* file);
+
+  ~FileOutputStream() override {}
+
+  bool WriteFully(const void* buffer, size_t byte_count) override;
+
+  off_t Seek(off_t offset, Whence whence) override;
+
+  bool Flush() override;
+
+ private:
+  File* const file_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileOutputStream);
+};
+
+}  // namespace art
+
+#endif  // ART_LIBELFFILE_STREAM_FILE_OUTPUT_STREAM_H_