simpleperf: add stuff in report_lib_interface.

It's a preparation to annotate binaries, containing following
changes:
1. Export build_id for binaries.
2. Export function virtual addresses.
3. Add unit tests in simpleperf_report_lib.py.

Bug: http://b/32834638
Test: simpleperf_unit_test.
Test: run `python simpleperf_report_lib.py`.
Change-Id: Ieed40935ff9ede44bf823ba9c88ad87806ffac0a

1 files changed, 6 insertions, 2 deletions

diff --git a/simpleperf/dso.cpp b/simpleperf/dso.cpp
index c8894160..d52c445f 100644
--- a/simpleperf/dso.cpp
+++ b/simpleperf/dso.cpp
@@ -118,14 +118,18 @@ void Dso::SetBuildIds(
   build_id_map_ = std::move(map);
 }
 
-BuildId Dso::GetExpectedBuildId() {
-  auto it = build_id_map_.find(path_);
+BuildId Dso::FindExpectedBuildIdForPath(const std::string& path) {
+  auto it = build_id_map_.find(path);
   if (it != build_id_map_.end()) {
     return it->second;
   }
   return BuildId();
 }
 
+BuildId Dso::GetExpectedBuildId() {
+  return FindExpectedBuildIdForPath(path_);
+}
+
 std::unique_ptr<Dso> Dso::CreateDso(DsoType dso_type,
                                     const std::string& dso_path) {
   return std::unique_ptr<Dso>(new Dso(dso_type, dso_path));