Make the library usable as a library.

- Add namespace unwindstack everywhere so that it's easier for other
  code to use the library.
- Move some of the header files into include/unwindstack so that they
  can be exposed.
- Modify the headers so that only a limited number need to be exposed.
- Update the tools to use the new headers.
- Add a GetLoadBias() call on the Elf object. This prevents the need
  to get the interface object out of the Elf object.
- Move the GetRelPc() call out of the Reg class, to the Elf class. It's
  not always the case that a Reg object will be around when you want to
  get a relative pc. The tests for this moved to ElfTest.cpp.

Bug: 23762183

Test: Unit tests pass.
Change-Id: Iac609dac1dd90ed83d1a1e24ff2579c96c023bc3

1 files changed, 45 insertions, 0 deletions

diff --git a/libunwindstack/include/unwindstack/DwarfLocation.h b/libunwindstack/include/unwindstack/DwarfLocation.h
new file mode 100644
index 0000000..3467e6a
--- /dev/null
+++ b/libunwindstack/include/unwindstack/DwarfLocation.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 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 _LIBUNWINDSTACK_DWARF_LOCATION_H
+#define _LIBUNWINDSTACK_DWARF_LOCATION_H
+
+#include <stdint.h>
+
+#include <unordered_map>
+
+namespace unwindstack {
+
+enum DwarfLocationEnum : uint8_t {
+  DWARF_LOCATION_INVALID = 0,
+  DWARF_LOCATION_UNDEFINED,
+  DWARF_LOCATION_OFFSET,
+  DWARF_LOCATION_VAL_OFFSET,
+  DWARF_LOCATION_REGISTER,
+  DWARF_LOCATION_EXPRESSION,
+  DWARF_LOCATION_VAL_EXPRESSION,
+};
+
+struct DwarfLocation {
+  DwarfLocationEnum type;
+  uint64_t values[2];
+};
+
+typedef std::unordered_map<uint16_t, DwarfLocation> dwarf_loc_regs_t;
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_DWARF_LOCATION_H