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
diff --git a/libunwindstack/tests/ArmExidxDecodeTest.cpp b/libunwindstack/tests/ArmExidxDecodeTest.cpp
index 4fff48e..94cb493 100644
--- a/libunwindstack/tests/ArmExidxDecodeTest.cpp
+++ b/libunwindstack/tests/ArmExidxDecodeTest.cpp
@@ -23,13 +23,16 @@
 
 #include <gtest/gtest.h>
 
+#include <unwindstack/Log.h>
+#include <unwindstack/Regs.h>
+
 #include "ArmExidx.h"
-#include "Regs.h"
-#include "Log.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class ArmExidxDecodeTest : public ::testing::TestWithParam<std::string> {
  protected:
   void Init(Memory* process_memory = nullptr) {
@@ -1092,3 +1095,5 @@
 }
 
 INSTANTIATE_TEST_CASE_P(, ArmExidxDecodeTest, ::testing::Values("logging", "no_logging"));
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/ArmExidxExtractTest.cpp b/libunwindstack/tests/ArmExidxExtractTest.cpp
index aed75bf..caad131 100644
--- a/libunwindstack/tests/ArmExidxExtractTest.cpp
+++ b/libunwindstack/tests/ArmExidxExtractTest.cpp
@@ -21,12 +21,15 @@
 
 #include <gtest/gtest.h>
 
+#include <unwindstack/Log.h>
+
 #include "ArmExidx.h"
-#include "Log.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class ArmExidxExtractTest : public ::testing::Test {
  protected:
   void SetUp() override {
@@ -329,3 +332,5 @@
   ASSERT_TRUE(exidx_->ExtractEntryData(0x5000));
   ASSERT_EQ("4 unwind Raw Data: 0x11 0x22 0x33 0xb0\n", GetFakeLogPrint());
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfCfaLogTest.cpp b/libunwindstack/tests/DwarfCfaLogTest.cpp
index 967c2c2..b17ca33 100644
--- a/libunwindstack/tests/DwarfCfaLogTest.cpp
+++ b/libunwindstack/tests/DwarfCfaLogTest.cpp
@@ -23,15 +23,18 @@
 #include <android-base/stringprintf.h>
 #include <gtest/gtest.h>
 
+#include <unwindstack/DwarfLocation.h>
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/DwarfStructs.h>
+#include <unwindstack/Log.h>
+
 #include "DwarfCfa.h"
-#include "DwarfLocation.h"
-#include "DwarfMemory.h"
-#include "DwarfStructs.h"
-#include "Log.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class DwarfCfaLogTest : public ::testing::Test {
  protected:
@@ -812,3 +815,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfCfaLogTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfCfaLogTest, DwarfCfaLogTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfCfaTest.cpp b/libunwindstack/tests/DwarfCfaTest.cpp
index 687af7d..73a67ac 100644
--- a/libunwindstack/tests/DwarfCfaTest.cpp
+++ b/libunwindstack/tests/DwarfCfaTest.cpp
@@ -21,15 +21,19 @@
 
 #include <gtest/gtest.h>
 
+#include <unwindstack/DwarfLocation.h>
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/DwarfStructs.h>
+#include <unwindstack/Log.h>
+
 #include "DwarfCfa.h"
-#include "DwarfLocation.h"
-#include "DwarfMemory.h"
-#include "DwarfStructs.h"
-#include "Log.h"
+#include "DwarfError.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class DwarfCfaTest : public ::testing::Test {
  protected:
@@ -957,3 +961,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfCfaTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfCfaTest, DwarfCfaTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfDebugFrameTest.cpp b/libunwindstack/tests/DwarfDebugFrameTest.cpp
index 94a9974..69813e5 100644
--- a/libunwindstack/tests/DwarfDebugFrameTest.cpp
+++ b/libunwindstack/tests/DwarfDebugFrameTest.cpp
@@ -21,11 +21,14 @@
 
 #include "DwarfDebugFrame.h"
 #include "DwarfEncoding.h"
+#include "DwarfError.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 #include "RegsFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class MockDwarfDebugFrame : public DwarfDebugFrame<TypeParam> {
  public:
@@ -454,3 +457,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfDebugFrameTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfDebugFrameTest, DwarfDebugFrameTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfEhFrameTest.cpp b/libunwindstack/tests/DwarfEhFrameTest.cpp
index 4e538d4..e9501e3 100644
--- a/libunwindstack/tests/DwarfEhFrameTest.cpp
+++ b/libunwindstack/tests/DwarfEhFrameTest.cpp
@@ -21,11 +21,14 @@
 
 #include "DwarfEhFrame.h"
 #include "DwarfEncoding.h"
+#include "DwarfError.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 #include "RegsFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class MockDwarfEhFrame : public DwarfEhFrame<TypeParam> {
  public:
@@ -407,3 +410,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfEhFrameTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfEhFrameTest, DwarfEhFrameTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfMemoryTest.cpp b/libunwindstack/tests/DwarfMemoryTest.cpp
index b7df8f7..08fe7cf 100644
--- a/libunwindstack/tests/DwarfMemoryTest.cpp
+++ b/libunwindstack/tests/DwarfMemoryTest.cpp
@@ -21,10 +21,12 @@
 
 #include <gtest/gtest.h>
 
-#include "DwarfMemory.h"
+#include <unwindstack/DwarfMemory.h>
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class DwarfMemoryTest : public ::testing::Test {
  protected:
   void SetUp() override {
@@ -494,3 +496,5 @@
   ASSERT_TRUE(dwarf_mem_->AdjustEncodedValue(0x40, &value));
   ASSERT_EQ(0x14234U, value);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfOpLogTest.cpp b/libunwindstack/tests/DwarfOpLogTest.cpp
index d18aad0..234d1c9 100644
--- a/libunwindstack/tests/DwarfOpLogTest.cpp
+++ b/libunwindstack/tests/DwarfOpLogTest.cpp
@@ -21,14 +21,17 @@
 
 #include <gtest/gtest.h>
 
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/Log.h>
+#include <unwindstack/Regs.h>
+
 #include "DwarfError.h"
-#include "DwarfMemory.h"
 #include "DwarfOp.h"
-#include "Log.h"
-#include "Regs.h"
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class DwarfOpLogTest : public ::testing::Test {
  protected:
@@ -66,3 +69,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfOpLogTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfOpLogTest, DwarfOpLogTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfOpTest.cpp b/libunwindstack/tests/DwarfOpTest.cpp
index 20c488a..47a40cf 100644
--- a/libunwindstack/tests/DwarfOpTest.cpp
+++ b/libunwindstack/tests/DwarfOpTest.cpp
@@ -21,14 +21,17 @@
 
 #include <gtest/gtest.h>
 
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/Log.h>
+
 #include "DwarfError.h"
-#include "DwarfMemory.h"
 #include "DwarfOp.h"
-#include "Log.h"
 
 #include "MemoryFake.h"
 #include "RegsFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class DwarfOpTest : public ::testing::Test {
  protected:
@@ -1579,3 +1582,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfOpTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfOpTest, DwarfOpTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfSectionImplTest.cpp b/libunwindstack/tests/DwarfSectionImplTest.cpp
index 71b114a..b871539 100644
--- a/libunwindstack/tests/DwarfSectionImplTest.cpp
+++ b/libunwindstack/tests/DwarfSectionImplTest.cpp
@@ -19,12 +19,17 @@
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
-#include "DwarfSection.h"
+#include <unwindstack/DwarfSection.h>
+
+#include "DwarfEncoding.h"
+#include "DwarfError.h"
 
 #include "LogFake.h"
 #include "MemoryFake.h"
 #include "RegsFake.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class MockDwarfSectionImpl : public DwarfSectionImpl<TypeParam> {
  public:
@@ -830,3 +835,5 @@
 
 typedef ::testing::Types<uint32_t, uint64_t> DwarfSectionImplTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, DwarfSectionImplTest, DwarfSectionImplTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/DwarfSectionTest.cpp b/libunwindstack/tests/DwarfSectionTest.cpp
index 20f0e2a..fc67063 100644
--- a/libunwindstack/tests/DwarfSectionTest.cpp
+++ b/libunwindstack/tests/DwarfSectionTest.cpp
@@ -19,10 +19,12 @@
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
-#include "DwarfSection.h"
+#include <unwindstack/DwarfSection.h>
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class MockDwarfSection : public DwarfSection {
  public:
   MockDwarfSection(Memory* memory) : DwarfSection(memory) {}
@@ -158,3 +160,5 @@
 
   ASSERT_TRUE(mock_section.Step(0x1000, nullptr, &process));
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/ElfInterfaceArmTest.cpp b/libunwindstack/tests/ElfInterfaceArmTest.cpp
index 67c9a6b..c7ef4a1 100644
--- a/libunwindstack/tests/ElfInterfaceArmTest.cpp
+++ b/libunwindstack/tests/ElfInterfaceArmTest.cpp
@@ -20,12 +20,15 @@
 
 #include <vector>
 
+#include <unwindstack/Regs.h>
+
 #include "ElfInterfaceArm.h"
 #include "Machine.h"
-#include "Regs.h"
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class ElfInterfaceArmTest : public ::testing::Test {
  protected:
   void SetUp() override {
@@ -370,3 +373,5 @@
   ASSERT_EQ(0x10U, regs.pc());
   ASSERT_EQ(0x10U, regs[ARM_REG_PC]);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/ElfInterfaceTest.cpp b/libunwindstack/tests/ElfInterfaceTest.cpp
index 0f56ba8..acb7320 100644
--- a/libunwindstack/tests/ElfInterfaceTest.cpp
+++ b/libunwindstack/tests/ElfInterfaceTest.cpp
@@ -20,7 +20,9 @@
 
 #include <gtest/gtest.h>
 
-#include "ElfInterface.h"
+#include <unwindstack/ElfInterface.h>
+
+#include "DwarfEncoding.h"
 #include "ElfInterfaceArm.h"
 
 #include "MemoryFake.h"
@@ -33,6 +35,8 @@
 #define EM_AARCH64 183
 #endif
 
+namespace unwindstack {
+
 class ElfInterfaceTest : public ::testing::Test {
  protected:
   void SetUp() override {
@@ -921,3 +925,5 @@
 TEST_F(ElfInterfaceTest, init_section_headers_offsets64) {
   InitSectionHeadersOffsets<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>();
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/ElfTest.cpp b/libunwindstack/tests/ElfTest.cpp
index bf0823b..72ceb85 100644
--- a/libunwindstack/tests/ElfTest.cpp
+++ b/libunwindstack/tests/ElfTest.cpp
@@ -22,7 +22,8 @@
 
 #include <gtest/gtest.h>
 
-#include "Elf.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
 
 #include "ElfTestUtils.h"
 #include "MemoryFake.h"
@@ -31,6 +32,8 @@
 #define PT_ARM_EXIDX 0x70000001
 #endif
 
+namespace unwindstack {
+
 class ElfTest : public ::testing::Test {
  protected:
   void SetUp() override {
@@ -237,3 +240,33 @@
   elf.InitGnuDebugdata();
   ASSERT_TRUE(elf.gnu_debugdata_interface() != nullptr);
 }
+
+class MockElf : public Elf {
+ public:
+  MockElf(Memory* memory) : Elf(memory) {}
+  virtual ~MockElf() = default;
+
+  void set_valid(bool valid) { valid_ = valid; }
+  void set_elf_interface(ElfInterface* interface) { interface_.reset(interface); }
+};
+
+TEST_F(ElfTest, rel_pc) {
+  MockElf elf(memory_);
+
+  ElfInterface* interface = new ElfInterface32(memory_);
+  elf.set_elf_interface(interface);
+
+  elf.set_valid(true);
+  interface->set_load_bias(0);
+  MapInfo map_info{.start = 0x1000, .end = 0x2000};
+
+  ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info));
+
+  interface->set_load_bias(0x3000);
+  ASSERT_EQ(0x3101U, elf.GetRelPc(0x1101, &map_info));
+
+  elf.set_valid(false);
+  ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info));
+}
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/ElfTestUtils.cpp b/libunwindstack/tests/ElfTestUtils.cpp
index 81064dd..069386b 100644
--- a/libunwindstack/tests/ElfTestUtils.cpp
+++ b/libunwindstack/tests/ElfTestUtils.cpp
@@ -31,6 +31,8 @@
 
 #include "ElfTestUtils.h"
 
+namespace unwindstack {
+
 template <typename Ehdr>
 void TestInitEhdr(Ehdr* ehdr, uint32_t elf_class, uint32_t machine_type) {
   memset(ehdr, 0, sizeof(Ehdr));
@@ -136,3 +138,5 @@
                                                            TestCopyFuncType);
 template void TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(uint32_t, uint32_t, bool,
                                                            TestCopyFuncType);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/ElfTestUtils.h b/libunwindstack/tests/ElfTestUtils.h
index 4fd3bbc..6ef00e1 100644
--- a/libunwindstack/tests/ElfTestUtils.h
+++ b/libunwindstack/tests/ElfTestUtils.h
@@ -19,6 +19,8 @@
 
 #include <functional>
 
+namespace unwindstack {
+
 typedef std::function<void(uint64_t, const void*, size_t)> TestCopyFuncType;
 
 template <typename Ehdr>
@@ -28,4 +30,6 @@
 void TestInitGnuDebugdata(uint32_t elf_class, uint32_t machine_type, bool init_gnu_debudata,
                           TestCopyFuncType copy_func);
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_TESTS_ELF_TEST_UTILS_H
diff --git a/libunwindstack/tests/LogFake.cpp b/libunwindstack/tests/LogFake.cpp
index 411594a..537ccaf 100644
--- a/libunwindstack/tests/LogFake.cpp
+++ b/libunwindstack/tests/LogFake.cpp
@@ -25,7 +25,6 @@
 #include "LogFake.h"
 
 // Forward declarations.
-class Backtrace;
 struct EventTagMap;
 struct AndroidLogEntry;
 
@@ -33,6 +32,8 @@
 
 std::string g_fake_log_print;
 
+namespace unwindstack {
+
 void ResetLogs() {
   g_fake_log_buf = "";
   g_fake_log_print = "";
@@ -46,6 +47,8 @@
   return g_fake_log_print;
 }
 
+}  // namespace unwindstack
+
 extern "C" int __android_log_buf_write(int bufId, int prio, const char* tag, const char* msg) {
   g_fake_log_buf += std::to_string(bufId) + ' ' + std::to_string(prio) + ' ';
   g_fake_log_buf += tag;
diff --git a/libunwindstack/tests/LogFake.h b/libunwindstack/tests/LogFake.h
index 006d393..e1dc50d 100644
--- a/libunwindstack/tests/LogFake.h
+++ b/libunwindstack/tests/LogFake.h
@@ -19,8 +19,12 @@
 
 #include <string>
 
+namespace unwindstack {
+
 void ResetLogs();
 std::string GetFakeLogBuf();
 std::string GetFakeLogPrint();
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_TESTS_LOG_FAKE_H
diff --git a/libunwindstack/tests/MapInfoCreateMemoryTest.cpp b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
index b82c841..9e45e78 100644
--- a/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
+++ b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
@@ -30,9 +30,11 @@
 #include <android-base/test_utils.h>
 #include <gtest/gtest.h>
 
-#include "Elf.h"
-#include "MapInfo.h"
-#include "Memory.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 class MapInfoCreateMemoryTest : public ::testing::Test {
  protected:
@@ -203,3 +205,5 @@
   kill(pid, SIGKILL);
   ASSERT_EQ(pid, wait(nullptr));
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MapInfoGetElfTest.cpp b/libunwindstack/tests/MapInfoGetElfTest.cpp
index fc36cc6..abfa172 100644
--- a/libunwindstack/tests/MapInfoGetElfTest.cpp
+++ b/libunwindstack/tests/MapInfoGetElfTest.cpp
@@ -30,9 +30,13 @@
 #include <android-base/test_utils.h>
 #include <gtest/gtest.h>
 
-#include "Elf.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Memory.h>
+
 #include "ElfTestUtils.h"
-#include "MapInfo.h"
+
+namespace unwindstack {
 
 class MapInfoGetElfTest : public ::testing::Test {
  protected:
@@ -138,3 +142,5 @@
   EXPECT_EQ(ELFCLASS64, elf->class_type());
   EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MapsTest.cpp b/libunwindstack/tests/MapsTest.cpp
index 7eb9bae..9430cf3 100644
--- a/libunwindstack/tests/MapsTest.cpp
+++ b/libunwindstack/tests/MapsTest.cpp
@@ -20,7 +20,9 @@
 #include <android-base/test_utils.h>
 #include <gtest/gtest.h>
 
-#include "Maps.h"
+#include <unwindstack/Maps.h>
+
+namespace unwindstack {
 
 TEST(MapsTest, parse_permissions) {
   BufferMaps maps(
@@ -235,3 +237,5 @@
   ASSERT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, info->flags);
   ASSERT_EQ("/system/lib/fake5.so", info->name);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryBufferTest.cpp b/libunwindstack/tests/MemoryBufferTest.cpp
index af3d6b9..50a8a1b 100644
--- a/libunwindstack/tests/MemoryBufferTest.cpp
+++ b/libunwindstack/tests/MemoryBufferTest.cpp
@@ -18,10 +18,12 @@
 
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
 
 #include "LogFake.h"
 
+namespace unwindstack {
+
 class MemoryBufferTest : public ::testing::Test {
  protected:
   void SetUp() override {
@@ -75,3 +77,5 @@
 
   ASSERT_FALSE(memory_->Read(UINT64_MAX - 100, buffer.data(), 200));
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryFake.cpp b/libunwindstack/tests/MemoryFake.cpp
index afb1029..2026acc 100644
--- a/libunwindstack/tests/MemoryFake.cpp
+++ b/libunwindstack/tests/MemoryFake.cpp
@@ -21,6 +21,8 @@
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 void MemoryFake::SetMemory(uint64_t addr, const void* memory, size_t length) {
   const uint8_t* src = reinterpret_cast<const uint8_t*>(memory);
   for (size_t i = 0; i < length; i++, addr++) {
@@ -44,3 +46,5 @@
   }
   return true;
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryFake.h b/libunwindstack/tests/MemoryFake.h
index 70ef30a..d374261 100644
--- a/libunwindstack/tests/MemoryFake.h
+++ b/libunwindstack/tests/MemoryFake.h
@@ -23,7 +23,9 @@
 #include <vector>
 #include <unordered_map>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 class MemoryFake : public Memory {
  public:
@@ -87,4 +89,6 @@
   }
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_TESTS_MEMORY_FAKE_H
diff --git a/libunwindstack/tests/MemoryFileTest.cpp b/libunwindstack/tests/MemoryFileTest.cpp
index aa7a23a..a204bae 100644
--- a/libunwindstack/tests/MemoryFileTest.cpp
+++ b/libunwindstack/tests/MemoryFileTest.cpp
@@ -21,7 +21,9 @@
 #include <android-base/file.h>
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 class MemoryFileTest : public ::testing::Test {
  protected:
@@ -269,3 +271,5 @@
     ASSERT_EQ(2, read_buffer[i]) << "Failed at byte " << i;
   }
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryLocalTest.cpp b/libunwindstack/tests/MemoryLocalTest.cpp
index ab999da..73eebdd 100644
--- a/libunwindstack/tests/MemoryLocalTest.cpp
+++ b/libunwindstack/tests/MemoryLocalTest.cpp
@@ -21,7 +21,9 @@
 
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 TEST(MemoryLocalTest, read) {
   std::vector<uint8_t> src(1024);
@@ -64,3 +66,5 @@
   uint64_t value;
   ASSERT_FALSE(local.Read(reinterpret_cast<uint64_t>(&value), dst.data(), SIZE_MAX));
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryRangeTest.cpp b/libunwindstack/tests/MemoryRangeTest.cpp
index 469afcc..6d1366c 100644
--- a/libunwindstack/tests/MemoryRangeTest.cpp
+++ b/libunwindstack/tests/MemoryRangeTest.cpp
@@ -22,10 +22,12 @@
 
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 TEST(MemoryRangeTest, read) {
   std::vector<uint8_t> src(1024);
   memset(src.data(), 0x4c, 1024);
@@ -70,3 +72,5 @@
   std::unique_ptr<MemoryRange> overflow(new MemoryRange(new MemoryFakeAlwaysReadZero, 100, 200));
   ASSERT_FALSE(overflow->Read(UINT64_MAX - 10, buffer.data(), 100));
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryRemoteTest.cpp b/libunwindstack/tests/MemoryRemoteTest.cpp
index 7210786..f8965b2 100644
--- a/libunwindstack/tests/MemoryRemoteTest.cpp
+++ b/libunwindstack/tests/MemoryRemoteTest.cpp
@@ -31,10 +31,12 @@
 #include <android-base/file.h>
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class MemoryRemoteTest : public ::testing::Test {
  protected:
   static uint64_t NanoTime() {
@@ -164,3 +166,5 @@
   kill(pid, SIGKILL);
   ASSERT_EQ(pid, wait(nullptr));
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MemoryTest.cpp b/libunwindstack/tests/MemoryTest.cpp
index 51b5d7d..4a9ed9f 100644
--- a/libunwindstack/tests/MemoryTest.cpp
+++ b/libunwindstack/tests/MemoryTest.cpp
@@ -22,10 +22,12 @@
 
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 TEST(MemoryTest, read32) {
   MemoryFakeAlwaysReadZero memory;
 
@@ -124,3 +126,5 @@
   ASSERT_TRUE(memory.ReadString(0, &dst_name));
   ASSERT_EQ("short", dst_name);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/RegsFake.h b/libunwindstack/tests/RegsFake.h
index c57954c..e796c9b 100644
--- a/libunwindstack/tests/RegsFake.h
+++ b/libunwindstack/tests/RegsFake.h
@@ -19,7 +19,10 @@
 
 #include <stdint.h>
 
-#include "Regs.h"
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
+namespace unwindstack {
 
 template <typename TypeParam>
 class RegsFake : public RegsImpl<TypeParam> {
@@ -28,10 +31,11 @@
       : RegsImpl<TypeParam>(total_regs, sp_reg, Regs::Location(Regs::LOCATION_UNKNOWN, 0)) {}
   virtual ~RegsFake() = default;
 
-  uint64_t GetRelPc(Elf*, const MapInfo*) override { return 0; }
   uint64_t GetAdjustedPc(uint64_t, Elf*) override { return 0; }
   void SetFromRaw() override {}
   bool GetReturnAddressFromDefault(Memory*, uint64_t*) { return false; }
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_TESTS_REGS_FAKE_H
diff --git a/libunwindstack/tests/RegsTest.cpp b/libunwindstack/tests/RegsTest.cpp
index dde42de..3613689 100644
--- a/libunwindstack/tests/RegsTest.cpp
+++ b/libunwindstack/tests/RegsTest.cpp
@@ -18,13 +18,15 @@
 
 #include <gtest/gtest.h>
 
-#include "Elf.h"
-#include "ElfInterface.h"
-#include "MapInfo.h"
-#include "Regs.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Regs.h>
 
 #include "MemoryFake.h"
 
+namespace unwindstack {
+
 class ElfFake : public Elf {
  public:
   ElfFake(Memory* memory) : Elf(memory) { valid_ = true; }
@@ -70,9 +72,6 @@
   }
 
   template <typename AddressType>
-  void regs_rel_pc();
-
-  template <typename AddressType>
   void regs_return_address_register();
 
   ElfInterfaceFake* elf_interface_;
@@ -127,26 +126,6 @@
 }
 
 template <typename AddressType>
-void RegsTest::regs_rel_pc() {
-  RegsTestImpl<AddressType> regs(30, 12);
-
-  elf_interface_->set_load_bias(0);
-  MapInfo map_info{.start = 0x1000, .end = 0x2000};
-  regs.set_pc(0x1101);
-  ASSERT_EQ(0x101U, regs.GetRelPc(elf_.get(), &map_info));
-  elf_interface_->set_load_bias(0x3000);
-  ASSERT_EQ(0x3101U, regs.GetRelPc(elf_.get(), &map_info));
-}
-
-TEST_F(RegsTest, regs32_rel_pc) {
-  regs_rel_pc<uint32_t>();
-}
-
-TEST_F(RegsTest, regs64_rel_pc) {
-  regs_rel_pc<uint64_t>();
-}
-
-template <typename AddressType>
 void RegsTest::regs_return_address_register() {
   RegsTestImpl<AddressType> regs(20, 10, Regs::Location(Regs::LOCATION_REGISTER, 5));
 
@@ -250,19 +229,19 @@
   MapInfo map_info{.start = 0x1000, .end = 0x2000};
 
   regs_arm.set_pc(0x1500);
-  ASSERT_EQ(0x500U, regs_arm.GetRelPc(&invalid_elf, &map_info));
+  ASSERT_EQ(0x500U, invalid_elf.GetRelPc(regs_arm.pc(), &map_info));
   ASSERT_EQ(0x500U, regs_arm.GetAdjustedPc(0x500U, &invalid_elf));
 
   regs_arm64.set_pc(0x1600);
-  ASSERT_EQ(0x600U, regs_arm64.GetRelPc(&invalid_elf, &map_info));
+  ASSERT_EQ(0x600U, invalid_elf.GetRelPc(regs_arm64.pc(), &map_info));
   ASSERT_EQ(0x600U, regs_arm64.GetAdjustedPc(0x600U, &invalid_elf));
 
   regs_x86.set_pc(0x1700);
-  ASSERT_EQ(0x700U, regs_x86.GetRelPc(&invalid_elf, &map_info));
+  ASSERT_EQ(0x700U, invalid_elf.GetRelPc(regs_x86.pc(), &map_info));
   ASSERT_EQ(0x700U, regs_x86.GetAdjustedPc(0x700U, &invalid_elf));
 
   regs_x86_64.set_pc(0x1800);
-  ASSERT_EQ(0x800U, regs_x86_64.GetRelPc(&invalid_elf, &map_info));
+  ASSERT_EQ(0x800U, invalid_elf.GetRelPc(regs_x86_64.pc(), &map_info));
   ASSERT_EQ(0x800U, regs_x86_64.GetAdjustedPc(0x800U, &invalid_elf));
 }
 
@@ -305,3 +284,5 @@
   EXPECT_EQ(0x1200000000U, x86_64.sp());
   EXPECT_EQ(0x4900000000U, x86_64.pc());
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/SymbolsTest.cpp b/libunwindstack/tests/SymbolsTest.cpp
index a0a21e6..da258a6 100644
--- a/libunwindstack/tests/SymbolsTest.cpp
+++ b/libunwindstack/tests/SymbolsTest.cpp
@@ -32,10 +32,13 @@
 #include <android-base/test_utils.h>
 #include <gtest/gtest.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
+
 #include "MemoryFake.h"
 #include "Symbols.h"
 
+namespace unwindstack {
+
 template <typename TypeParam>
 class SymbolsTest : public ::testing::Test {
  protected:
@@ -333,3 +336,5 @@
 
 typedef ::testing::Types<Elf32_Sym, Elf64_Sym> SymbolsTestTypes;
 INSTANTIATE_TYPED_TEST_CASE_P(, SymbolsTest, SymbolsTestTypes);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/UnwindTest.cpp b/libunwindstack/tests/UnwindTest.cpp
index 7497b65..72065c9 100644
--- a/libunwindstack/tests/UnwindTest.cpp
+++ b/libunwindstack/tests/UnwindTest.cpp
@@ -31,12 +31,14 @@
 #include <string>
 #include <thread>
 
-#include "Elf.h"
-#include "MapInfo.h"
-#include "Maps.h"
-#include "Memory.h"
-#include "Regs.h"
-#include "RegsGetLocal.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+#include <unwindstack/RegsGetLocal.h>
+
+namespace unwindstack {
 
 static std::atomic_bool g_ready(false);
 static volatile bool g_ready_for_remote = false;
@@ -71,7 +73,7 @@
     ASSERT_TRUE(map_info != nullptr) << ErrorMsg(function_names, function_name_index, unwind_stream);
 
     Elf* elf = map_info->GetElf(pid, true);
-    uint64_t rel_pc = regs->GetRelPc(elf, map_info);
+    uint64_t rel_pc = elf->GetRelPc(regs->pc(), map_info);
     uint64_t adjusted_rel_pc = rel_pc;
     if (frame_num != 0) {
       adjusted_rel_pc = regs->GetAdjustedPc(rel_pc, elf);
@@ -210,7 +212,7 @@
 
   // Wait for context data.
   void* ucontext;
-  for (size_t i = 0; i < 200; i++) {
+  for (size_t i = 0; i < 2000; i++) {
     ucontext = reinterpret_cast<void*>(g_ucontext.load());
     if (ucontext != nullptr) {
       break;
@@ -231,3 +233,5 @@
   g_finish = true;
   thread.join();
 }
+
+}  // namespace unwindstack