commit e7b6624c3fd6bb780f6330448fad175e80469384
author Christopher Ferris <cferris@google.com> Fri Dec 15 11:17:45 2017 -0800
committer Christopher Ferris <cferris@google.com> Fri Dec 15 11:17:45 2017 -0800
tree 3d51f04c7a314eddbd0d091b5ae806cdcb18b64d
parent 3fca67514a0634f1645db5d0a1030e42d061bf69

Fix issues in libunwindstack.

- Add a load_bias field in MapInfo so that it can be loaded offline,
  and also so it can be cached.
- Add an Add function to the Maps class so that it's possible to manually
  create a map.
- Remove the OfflineMaps class since I haven't found a reason for this to
  exist.
- Add a pointer to the gnu debugdata compressed section in the interface
  itself and modify the step path to try eh_frame, then debug_frame, then
  gnu_debugdata. This way arm can add exidx as the last step behind
  gnu_debugdata. Add an offline test to verify the order of unwind.
- Fix x86_64_ucontext_t since it was a different size on 32 bit and 64 bit
  systems.

Test: Pass new unit tests.
Change-Id: I978b70d6c244bd307c62a29886d24c1a8cb2af23

libunwindstack/tests/ElfTest.cpp

diff --git a/libunwindstack/tests/ElfTest.cpp b/libunwindstack/tests/ElfTest.cpp
index 7491d40..5e808ef 100644
--- a/libunwindstack/tests/ElfTest.cpp
+++ b/libunwindstack/tests/ElfTest.cpp
@@ -346,7 +346,7 @@
   void InitHeaders() override {}
   bool GetSoname(std::string*) override { return false; }
   bool GetFunctionName(uint64_t, uint64_t, std::string*, uint64_t*) override { return false; }
-  MOCK_METHOD4(Step, bool(uint64_t, Regs*, Memory*, bool*));
+  MOCK_METHOD5(Step, bool(uint64_t, uint64_t, Regs*, Memory*, bool*));
 };
 
 TEST_F(ElfTest, step_in_interface) {
@@ -361,7 +361,7 @@
   MemoryFake process_memory;
 
   bool finished;
-  EXPECT_CALL(*interface, Step(0x1000, &regs, &process_memory, &finished))
+  EXPECT_CALL(*interface, Step(0x1000, 0, &regs, &process_memory, &finished))
       .WillOnce(::testing::Return(true));
 
   ASSERT_TRUE(elf.Step(0x1004, 0x1000, 0x2000, &regs, &process_memory, &finished));
@@ -382,7 +382,7 @@
   bool finished;
   ASSERT_FALSE(elf.Step(0x1004, 0x1000, 0x2000, &regs, &process_memory, &finished));
 
-  EXPECT_CALL(*interface, Step(0x3300, &regs, &process_memory, &finished))
+  EXPECT_CALL(*interface, Step(0x7300, 0x4000, &regs, &process_memory, &finished))
       .WillOnce(::testing::Return(true));
 
   ASSERT_TRUE(elf.Step(0x7304, 0x7300, 0x2000, &regs, &process_memory, &finished));