Add ElfWriter::GetStream().
This will be used for writing the OatHeader which is
currently oddly written through the .text stream.
Also move the error delaying output stream out of the
ElfBuilder<> to its own file and move all output stream
files to compiler/linker/.
Change-Id: I00db4e33ed80ac4757ec459946c7b5ae014a3a2e
diff --git a/compiler/linker/vector_output_stream.cc b/compiler/linker/vector_output_stream.cc
new file mode 100644
index 0000000..f758005
--- /dev/null
+++ b/compiler/linker/vector_output_stream.cc
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+#include "vector_output_stream.h"
+
+#include "base/logging.h"
+
+namespace art {
+
+VectorOutputStream::VectorOutputStream(const std::string& location, std::vector<uint8_t>* vector)
+ : OutputStream(location), offset_(vector->size()), vector_(vector) {}
+
+off_t VectorOutputStream::Seek(off_t offset, Whence whence) {
+ CHECK(whence == kSeekSet || whence == kSeekCurrent || whence == kSeekEnd) << whence;
+ off_t new_offset = 0;
+ switch (whence) {
+ case kSeekSet: {
+ new_offset = offset;
+ break;
+ }
+ case kSeekCurrent: {
+ new_offset = offset_ + offset;
+ break;
+ }
+ case kSeekEnd: {
+ new_offset = vector_->size() + offset;
+ break;
+ }
+ }
+ EnsureCapacity(new_offset);
+ offset_ = new_offset;
+ return offset_;
+}
+
+} // namespace art