diff --git a/adb/Android.mk b/adb/Android.mk
index 1f6f194..ae03593 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -350,11 +350,11 @@
     -D_GNU_SOURCE \
     -Wno-deprecated-declarations \
 
+LOCAL_CFLAGS += -DALLOW_ADBD_ROOT=$(if $(filter userdebug eng,$(TARGET_BUILD_VARIANT)),1,0)
 LOCAL_CFLAGS += -DALLOW_ADBD_NO_AUTH=$(if $(filter userdebug eng,$(TARGET_BUILD_VARIANT)),1,0)
 
 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
 LOCAL_CFLAGS += -DALLOW_ADBD_DISABLE_VERITY=1
-LOCAL_CFLAGS += -DALLOW_ADBD_ROOT=1
 endif
 
 LOCAL_MODULE := adbd
diff --git a/adb/daemon/main.cpp b/adb/daemon/main.cpp
index 1c94298..e0629ab 100644
--- a/adb/daemon/main.cpp
+++ b/adb/daemon/main.cpp
@@ -49,17 +49,23 @@
 
 static const char* root_seclabel = nullptr;
 
+static inline bool is_device_unlocked() {
+    return "orange" == android::base::GetProperty("ro.boot.verifiedbootstate", "");
+}
+
 static void drop_capabilities_bounding_set_if_needed(struct minijail *j) {
-#if defined(ALLOW_ADBD_ROOT)
-    if (__android_log_is_debuggable()) {
-        return;
+    if (ALLOW_ADBD_ROOT || is_device_unlocked()) {
+        if (__android_log_is_debuggable()) {
+            return;
+        }
     }
-#endif
     minijail_capbset_drop(j, CAP_TO_MASK(CAP_SETUID) | CAP_TO_MASK(CAP_SETGID));
 }
 
 static bool should_drop_privileges() {
-#if defined(ALLOW_ADBD_ROOT)
+    // "adb root" not allowed, always drop privileges.
+    if (!ALLOW_ADBD_ROOT && !is_device_unlocked()) return true;
+
     // The properties that affect `adb root` and `adb unroot` are ro.secure and
     // ro.debuggable. In this context the names don't make the expected behavior
     // particularly obvious.
@@ -89,9 +95,6 @@
     }
 
     return drop;
-#else
-    return true; // "adb root" not allowed, always drop privileges.
-#endif // ALLOW_ADBD_ROOT
 }
 
 static void drop_privileges(int server_port) {
@@ -158,7 +161,10 @@
     // descriptor will always be open.
     adbd_cloexec_auth_socket();
 
-    if (ALLOW_ADBD_NO_AUTH && !android::base::GetBoolProperty("ro.adb.secure", false)) {
+    // Respect ro.adb.secure in userdebug/eng builds (ALLOW_ADBD_NO_AUTH), or when the
+    // device is unlocked.
+    if ((ALLOW_ADBD_NO_AUTH || is_device_unlocked()) &&
+        !android::base::GetBoolProperty("ro.adb.secure", false)) {
         auth_required = false;
     }
 
diff --git a/base/chrono_utils.cpp b/base/chrono_utils.cpp
index 5eedf3b..b6bf701 100644
--- a/base/chrono_utils.cpp
+++ b/base/chrono_utils.cpp
@@ -33,5 +33,10 @@
 #endif  // __ANDROID__
 }
 
+std::ostream& operator<<(std::ostream& os, const Timer& t) {
+  os << t.duration().count() << "ms";
+  return os;
+}
+
 }  // namespace base
 }  // namespace android
diff --git a/base/chrono_utils_test.cpp b/base/chrono_utils_test.cpp
index 057132d..da442f4 100644
--- a/base/chrono_utils_test.cpp
+++ b/base/chrono_utils_test.cpp
@@ -19,6 +19,9 @@
 #include <time.h>
 
 #include <chrono>
+#include <sstream>
+#include <string>
+#include <thread>
 
 #include <gtest/gtest.h>
 
@@ -42,5 +45,36 @@
   EXPECT_EQ(now, boot_seconds);
 }
 
+template <typename T>
+void ExpectAboutEqual(T expected, T actual) {
+  auto expected_upper_bound = expected * 1.05f;
+  auto expected_lower_bound = expected * .95;
+  EXPECT_GT(expected_upper_bound, actual);
+  EXPECT_LT(expected_lower_bound, actual);
+}
+
+TEST(ChronoUtilsTest, TimerDurationIsSane) {
+  auto start = boot_clock::now();
+  Timer t;
+  std::this_thread::sleep_for(50ms);
+  auto stop = boot_clock::now();
+  auto stop_timer = t.duration();
+
+  auto expected = std::chrono::duration_cast<std::chrono::milliseconds>(stop - start);
+  ExpectAboutEqual(expected, stop_timer);
+}
+
+TEST(ChronoUtilsTest, TimerOstream) {
+  Timer t;
+  std::this_thread::sleep_for(50ms);
+  auto stop_timer = t.duration().count();
+  std::stringstream os;
+  os << t;
+  decltype(stop_timer) stop_timer_from_stream;
+  os >> stop_timer_from_stream;
+  EXPECT_NE(0, stop_timer);
+  ExpectAboutEqual(stop_timer, stop_timer_from_stream);
+}
+
 }  // namespace base
-}  // namespace android
\ No newline at end of file
+}  // namespace android
diff --git a/base/include/android-base/chrono_utils.h b/base/include/android-base/chrono_utils.h
index 0086425..7679d4c 100644
--- a/base/include/android-base/chrono_utils.h
+++ b/base/include/android-base/chrono_utils.h
@@ -18,6 +18,9 @@
 #define ANDROID_BASE_CHRONO_UTILS_H
 
 #include <chrono>
+#include <sstream>
+
+using namespace std::chrono_literals;
 
 namespace android {
 namespace base {
@@ -31,6 +34,20 @@
   static time_point now();
 };
 
+class Timer {
+ public:
+  Timer() : start_(boot_clock::now()) {}
+
+  std::chrono::milliseconds duration() const {
+    return std::chrono::duration_cast<std::chrono::milliseconds>(boot_clock::now() - start_);
+  }
+
+ private:
+  boot_clock::time_point start_;
+};
+
+std::ostream& operator<<(std::ostream& os, const Timer& t);
+
 }  // namespace base
 }  // namespace android
 
diff --git a/base/include/android-base/utf8.h b/base/include/android-base/utf8.h
index 2d5a6f6..c9cc1ab 100755
--- a/base/include/android-base/utf8.h
+++ b/base/include/android-base/utf8.h
@@ -22,6 +22,8 @@
 #else
 // Bring in prototypes for standard APIs so that we can import them into the utf8 namespace.
 #include <fcntl.h>      // open
+#include <stdio.h>      // fopen
+#include <sys/stat.h>   // mkdir
 #include <unistd.h>     // unlink
 #endif
 
@@ -53,6 +55,19 @@
 // Convert a UTF-8 std::string (including any embedded NULL characters) to
 // UTF-16. Returns whether the conversion was done successfully.
 bool UTF8ToWide(const std::string& utf8, std::wstring* utf16);
+
+// Convert a file system path, represented as a NULL-terminated string of
+// UTF-8 characters, to a UTF-16 string representing the same file system
+// path using the Windows extended-lengh path representation.
+//
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#MAXPATH:
+//   ```The Windows API has many functions that also have Unicode versions to
+//   permit an extended-length path for a maximum total path length of 32,767
+//   characters. To specify an extended-length path, use the "\\?\" prefix.
+//   For example, "\\?\D:\very long path".```
+//
+// Returns whether the conversion was done successfully.
+bool UTF8PathToWindowsLongPath(const char* utf8, std::wstring* utf16);
 #endif
 
 // The functions in the utf8 namespace take UTF-8 strings. For Windows, these
@@ -73,9 +88,13 @@
 namespace utf8 {
 
 #ifdef _WIN32
+FILE* fopen(const char* name, const char* mode);
+int mkdir(const char* name, mode_t mode);
 int open(const char* name, int flags, ...);
 int unlink(const char* name);
 #else
+using ::fopen;
+using ::mkdir;
 using ::open;
 using ::unlink;
 #endif
diff --git a/base/utf8.cpp b/base/utf8.cpp
index 3cca700..5984fb0 100644
--- a/base/utf8.cpp
+++ b/base/utf8.cpp
@@ -19,7 +19,9 @@
 #include "android-base/utf8.h"
 
 #include <fcntl.h>
+#include <stdio.h>
 
+#include <algorithm>
 #include <string>
 
 #include "android-base/logging.h"
@@ -153,12 +155,58 @@
   return UTF8ToWide(utf8.c_str(), utf8.length(), utf16);
 }
 
+static bool isDriveLetter(wchar_t c) {
+  return (c >= L'a' && c <= L'z') || (c >= L'A' && c <= L'Z');
+}
+
+bool UTF8PathToWindowsLongPath(const char* utf8, std::wstring* utf16) {
+  if (!UTF8ToWide(utf8, utf16)) {
+    return false;
+  }
+  // Note: Although most Win32 File I/O API are limited to MAX_PATH (260
+  //       characters), the CreateDirectory API is limited to 248 characters.
+  if (utf16->length() >= 248) {
+    // If path is of the form "x:\" or "x:/"
+    if (isDriveLetter((*utf16)[0]) && (*utf16)[1] == L':' &&
+        ((*utf16)[2] == L'\\' || (*utf16)[2] == L'/')) {
+      // Append long path prefix, and make sure there are no unix-style
+      // separators to ensure a fully compliant Win32 long path string.
+      utf16->insert(0, LR"(\\?\)");
+      std::replace(utf16->begin(), utf16->end(), L'/', L'\\');
+    }
+  }
+  return true;
+}
+
 // Versions of standard library APIs that support UTF-8 strings.
 namespace utf8 {
 
+FILE* fopen(const char* name, const char* mode) {
+  std::wstring name_utf16;
+  if (!UTF8PathToWindowsLongPath(name, &name_utf16)) {
+    return nullptr;
+  }
+
+  std::wstring mode_utf16;
+  if (!UTF8ToWide(mode, &mode_utf16)) {
+    return nullptr;
+  }
+
+  return _wfopen(name_utf16.c_str(), mode_utf16.c_str());
+}
+
+int mkdir(const char* name, mode_t mode) {
+  std::wstring name_utf16;
+  if (!UTF8PathToWindowsLongPath(name, &name_utf16)) {
+    return -1;
+  }
+
+  return _wmkdir(name_utf16.c_str());
+}
+
 int open(const char* name, int flags, ...) {
   std::wstring name_utf16;
-  if (!UTF8ToWide(name, &name_utf16)) {
+  if (!UTF8PathToWindowsLongPath(name, &name_utf16)) {
     return -1;
   }
 
@@ -175,7 +223,7 @@
 
 int unlink(const char* name) {
   std::wstring name_utf16;
-  if (!UTF8ToWide(name, &name_utf16)) {
+  if (!UTF8PathToWindowsLongPath(name, &name_utf16)) {
     return -1;
   }
 
diff --git a/base/utf8_test.cpp b/base/utf8_test.cpp
index ae8fc8c..fcb25c3 100644
--- a/base/utf8_test.cpp
+++ b/base/utf8_test.cpp
@@ -18,7 +18,12 @@
 
 #include <gtest/gtest.h>
 
+#include <fcntl.h>
+#include <stdlib.h>
+
 #include "android-base/macros.h"
+#include "android-base/test_utils.h"
+#include "android-base/unique_fd.h"
 
 namespace android {
 namespace base {
@@ -408,5 +413,76 @@
   EXPECT_EQ(expected_null, SysUTF8ToWide(utf8_null));
 }
 
+TEST(UTF8PathToWindowsLongPathTest, DontAddPrefixIfShorterThanMaxPath) {
+  std::string utf8 = "c:\\mypath\\myfile.txt";
+
+  std::wstring wide;
+  EXPECT_TRUE(UTF8PathToWindowsLongPath(utf8.c_str(), &wide));
+
+  EXPECT_EQ(std::string::npos, wide.find(LR"(\\?\)"));
+}
+
+TEST(UTF8PathToWindowsLongPathTest, AddPrefixIfLongerThanMaxPath) {
+  std::string utf8 = "c:\\mypath";
+  while (utf8.length() < 300 /* MAX_PATH is 260 */) {
+    utf8 += "\\mypathsegment";
+  }
+
+  std::wstring wide;
+  EXPECT_TRUE(UTF8PathToWindowsLongPath(utf8.c_str(), &wide));
+
+  EXPECT_EQ(0U, wide.find(LR"(\\?\)"));
+  EXPECT_EQ(std::string::npos, wide.find(L"/"));
+}
+
+TEST(UTF8PathToWindowsLongPathTest, AddPrefixAndFixSeparatorsIfLongerThanMaxPath) {
+  std::string utf8 = "c:/mypath";
+  while (utf8.length() < 300 /* MAX_PATH is 260 */) {
+    utf8 += "/mypathsegment";
+  }
+
+  std::wstring wide;
+  EXPECT_TRUE(UTF8PathToWindowsLongPath(utf8.c_str(), &wide));
+
+  EXPECT_EQ(0U, wide.find(LR"(\\?\)"));
+  EXPECT_EQ(std::string::npos, wide.find(L"/"));
+}
+
+namespace utf8 {
+
+TEST(Utf8FilesTest, CanCreateOpenAndDeleteFileWithLongPath) {
+  TemporaryDir td;
+
+  // Create long directory path
+  std::string utf8 = td.path;
+  while (utf8.length() < 300 /* MAX_PATH is 260 */) {
+    utf8 += "\\mypathsegment";
+    EXPECT_EQ(0, mkdir(utf8.c_str(), 0));
+  }
+
+  // Create file
+  utf8 += "\\test-file.bin";
+  int flags = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY;
+  int mode = 0666;
+  android::base::unique_fd fd(open(utf8.c_str(), flags, mode));
+  EXPECT_NE(-1, fd.get());
+
+  // Close file
+  fd.reset();
+  EXPECT_EQ(-1, fd.get());
+
+  // Open file with fopen
+  FILE* file = fopen(utf8.c_str(), "rb");
+  EXPECT_NE(nullptr, file);
+
+  if (file) {
+    fclose(file);
+  }
+
+  // Delete file
+  EXPECT_EQ(0, unlink(utf8.c_str()));
+}
+
+}  // namespace utf8
 }  // namespace base
 }  // namespace android
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index a4c2160..344fa9a 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -85,12 +85,13 @@
   fprintf(stderr, "Usage: %s [options]\n", cmd);
   fprintf(stderr,
           "options include:\n"
-          "  -h, --help            Show this help\n"
-          "  -l, --log             Log all metrics to logstorage\n"
-          "  -p, --print           Dump the boot event records to the console\n"
-          "  -r, --record          Record the timestamp of a named boot event\n"
-          "  --value               Optional value to associate with the boot event\n"
-          "  --record_boot_reason  Record the reason why the device booted\n"
+          "  -h, --help              Show this help\n"
+          "  -l, --log               Log all metrics to logstorage\n"
+          "  -p, --print             Dump the boot event records to the console\n"
+          "  -r, --record            Record the timestamp of a named boot event\n"
+          "  --value                 Optional value to associate with the boot event\n"
+          "  --record_boot_complete  Record metrics related to the time for the device boot\n"
+          "  --record_boot_reason    Record the reason why the device booted\n"
           "  --record_time_since_factory_reset Record the time since the device was reset\n");
 }
 
diff --git a/debuggerd/Android.bp b/debuggerd/Android.bp
index f993820..f86aaa0 100644
--- a/debuggerd/Android.bp
+++ b/debuggerd/Android.bp
@@ -275,7 +275,6 @@
         "libdebuggerd_client",
         "liblog",
         "libprocinfo",
-        "libselinux",
     ],
 
     local_include_dirs: ["include"],
diff --git a/debuggerd/crasher/crasher.cpp b/debuggerd/crasher/crasher.cpp
index 6970201..f57349b 100644
--- a/debuggerd/crasher/crasher.cpp
+++ b/debuggerd/crasher/crasher.cpp
@@ -134,6 +134,14 @@
     free(buf); // GCC is smart enough to warn about this, but we're doing it deliberately.
 }
 
+noinline void leak() {
+    while (true) {
+        void* mapping =
+            mmap(nullptr, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+        static_cast<volatile char*>(mapping)[0] = 'a';
+    }
+}
+
 noinline void sigsegv_non_null() {
     int* a = (int *)(&do_action);
     *a = 42;
@@ -160,8 +168,8 @@
     fprintf(stderr, "  stack-overflow        recurse until the stack overflows\n");
     fprintf(stderr, "  nostack               crash with a NULL stack pointer\n");
     fprintf(stderr, "\n");
-    fprintf(stderr, "  heap-corruption       cause a libc abort by corrupting the heap\n");
     fprintf(stderr, "  heap-usage            cause a libc abort by abusing a heap function\n");
+    fprintf(stderr, "  leak                  leak memory until we get OOM-killed\n");
     fprintf(stderr, "\n");
     fprintf(stderr, "  abort                 call abort()\n");
     fprintf(stderr, "  assert                call assert() without a function\n");
@@ -265,6 +273,8 @@
         return pthread_join(0, nullptr);
     } else if (!strcasecmp(arg, "heap-usage")) {
         abuse_heap();
+    } else if (!strcasecmp(arg, "leak")) {
+        leak();
     } else if (!strcasecmp(arg, "SIGSEGV-unmapped")) {
         char* map = reinterpret_cast<char*>(mmap(nullptr, sizeof(int), PROT_READ | PROT_WRITE,
                                                  MAP_SHARED | MAP_ANONYMOUS, -1, 0));
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index 0cc5f69..b016e23 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -28,7 +28,6 @@
 #include <android-base/unique_fd.h>
 #include <debuggerd/client.h>
 #include <procinfo/process.h>
-#include <selinux/selinux.h>
 #include "util.h"
 
 using android::base::unique_fd;
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index 8c19a81..ff9b84f 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -32,6 +32,7 @@
 #include <unistd.h>
 
 #include <memory>
+#include <thread>
 
 #include <android-base/file.h>
 #include <android-base/properties.h>
@@ -78,43 +79,33 @@
     FS_STAT_E2FSCK_F_ALWAYS = 0x0004,
     FS_STAT_UNCLEAN_SHUTDOWN = 0x0008,
     FS_STAT_QUOTA_ENABLED = 0x0010,
-    FS_STAT_TUNE2FS_FAILED = 0x0020,
     FS_STAT_RO_MOUNT_FAILED = 0x0040,
     FS_STAT_RO_UNMOUNT_FAILED = 0x0080,
     FS_STAT_FULL_MOUNT_FAILED = 0x0100,
     FS_STAT_E2FSCK_FAILED = 0x0200,
     FS_STAT_E2FSCK_FS_FIXED = 0x0400,
     FS_STAT_EXT4_INVALID_MAGIC = 0x0800,
+    FS_STAT_TOGGLE_QUOTAS_FAILED = 0x10000,
+    FS_STAT_SET_RESERVED_BLOCKS_FAILED = 0x20000,
+    FS_STAT_ENABLE_ENCRYPTION_FAILED = 0x40000,
 };
 
-/*
- * gettime() - returns the time in seconds of the system's monotonic clock or
- * zero on error.
- */
-static time_t gettime(void)
-{
-    struct timespec ts;
-    int ret;
+// TODO: switch to inotify()
+bool fs_mgr_wait_for_file(const std::string& filename,
+                          const std::chrono::milliseconds relative_timeout) {
+    auto start_time = std::chrono::steady_clock::now();
 
-    ret = clock_gettime(CLOCK_MONOTONIC, &ts);
-    if (ret < 0) {
-        PERROR << "clock_gettime(CLOCK_MONOTONIC) failed";
-        return 0;
+    while (true) {
+        if (!access(filename.c_str(), F_OK) || errno != ENOENT) {
+            return true;
+        }
+
+        std::this_thread::sleep_for(50ms);
+
+        auto now = std::chrono::steady_clock::now();
+        auto time_elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - start_time);
+        if (time_elapsed > relative_timeout) return false;
     }
-
-    return ts.tv_sec;
-}
-
-static int wait_for_file(const char *filename, int timeout)
-{
-    struct stat info;
-    time_t timeout_time = gettime() + timeout;
-    int ret = -1;
-
-    while (gettime() < timeout_time && ((ret = stat(filename, &info)) < 0))
-        usleep(10000);
-
-    return ret;
 }
 
 static void log_fs_stat(const char* blk_device, int fs_stat)
@@ -128,10 +119,16 @@
     }
 }
 
+static bool is_extfs(const std::string& fs_type) {
+    return fs_type == "ext4" || fs_type == "ext3" || fs_type == "ext2";
+}
+
 static bool should_force_check(int fs_stat) {
-    return fs_stat & (FS_STAT_E2FSCK_F_ALWAYS | FS_STAT_UNCLEAN_SHUTDOWN | FS_STAT_QUOTA_ENABLED |
-                      FS_STAT_TUNE2FS_FAILED | FS_STAT_RO_MOUNT_FAILED | FS_STAT_RO_UNMOUNT_FAILED |
-                      FS_STAT_FULL_MOUNT_FAILED | FS_STAT_E2FSCK_FAILED);
+    return fs_stat &
+           (FS_STAT_E2FSCK_F_ALWAYS | FS_STAT_UNCLEAN_SHUTDOWN | FS_STAT_QUOTA_ENABLED |
+            FS_STAT_RO_MOUNT_FAILED | FS_STAT_RO_UNMOUNT_FAILED | FS_STAT_FULL_MOUNT_FAILED |
+            FS_STAT_E2FSCK_FAILED | FS_STAT_TOGGLE_QUOTAS_FAILED |
+            FS_STAT_SET_RESERVED_BLOCKS_FAILED | FS_STAT_ENABLE_ENCRYPTION_FAILED);
 }
 
 static void check_fs(const char *blk_device, char *fs_type, char *target, int *fs_stat)
@@ -144,7 +141,7 @@
     const char* e2fsck_forced_argv[] = {E2FSCK_BIN, "-f", "-y", blk_device};
 
     /* Check for the types of filesystems we know how to check */
-    if (!strcmp(fs_type, "ext2") || !strcmp(fs_type, "ext3") || !strcmp(fs_type, "ext4")) {
+    if (is_extfs(fs_type)) {
         if (*fs_stat & FS_STAT_EXT4_INVALID_MAGIC) {  // will fail, so do not try
             return;
         }
@@ -242,186 +239,208 @@
     return;
 }
 
-/* Function to read the primary superblock */
-static int read_super_block(int fd, struct ext4_super_block *sb)
-{
-    off64_t ret;
-
-    ret = lseek64(fd, 1024, SEEK_SET);
-    if (ret < 0)
-        return ret;
-
-    ret = read(fd, sb, sizeof(*sb));
-    if (ret < 0)
-        return ret;
-    if (ret != sizeof(*sb))
-        return ret;
-
-    return 0;
-}
-
-static ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
-{
+static ext4_fsblk_t ext4_blocks_count(const struct ext4_super_block* es) {
     return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
-            le32_to_cpu(es->s_blocks_count_lo);
+           le32_to_cpu(es->s_blocks_count_lo);
 }
 
-static ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es)
-{
+static ext4_fsblk_t ext4_r_blocks_count(const struct ext4_super_block* es) {
     return ((ext4_fsblk_t)le32_to_cpu(es->s_r_blocks_count_hi) << 32) |
-            le32_to_cpu(es->s_r_blocks_count_lo);
+           le32_to_cpu(es->s_r_blocks_count_lo);
 }
 
-static int do_quota_with_shutdown_check(char *blk_device, char *fs_type,
-                                        struct fstab_rec *rec, int *fs_stat)
-{
-    int force_check = 0;
-    if (!strcmp(fs_type, "ext4")) {
-        /*
-         * Some system images do not have tune2fs for licensing reasons
-         * Detect these and skip reserve blocks.
-         */
-        if (access(TUNE2FS_BIN, X_OK)) {
-            LERROR << "Not running " << TUNE2FS_BIN << " on "
-                   << blk_device << " (executable not in system image)";
-        } else {
-            const char* arg1 = nullptr;
-            const char* arg2 = nullptr;
-            int status = 0;
-            int ret = 0;
-            android::base::unique_fd fd(
-                TEMP_FAILURE_RETRY(open(blk_device, O_RDONLY | O_CLOEXEC)));
-            if (fd >= 0) {
-                struct ext4_super_block sb;
-                ret = read_super_block(fd, &sb);
-                if (ret < 0) {
-                    PERROR << "Can't read '" << blk_device << "' super block";
-                    return force_check;
-                }
-                if (sb.s_magic != EXT4_SUPER_MAGIC) {
-                    LINFO << "Invalid ext4 magic:0x" << std::hex << sb.s_magic << "," << blk_device;
-                    *fs_stat |= FS_STAT_EXT4_INVALID_MAGIC;
-                    return 0;  // not a valid fs, tune2fs, fsck, and mount  will all fail.
-                }
-                *fs_stat |= FS_STAT_IS_EXT4;
-                LINFO << "superblock s_max_mnt_count:" << sb.s_max_mnt_count << "," << blk_device;
-                if (sb.s_max_mnt_count == 0xffff) {  // -1 (int16) in ext2, but uint16 in ext4
-                    *fs_stat |= FS_STAT_NEW_IMAGE_VERSION;
-                }
-                if ((sb.s_feature_incompat & EXT4_FEATURE_INCOMPAT_RECOVER) != 0 ||
-                    (sb.s_state & EXT4_VALID_FS) == 0) {
-                    LINFO << __FUNCTION__ << "(): was not clealy shutdown, state flag:"
-                          << std::hex << sb.s_state
-                          << "incompat flag:" << std::hex << sb.s_feature_incompat;
-                    force_check = 1;
-                    *fs_stat |= FS_STAT_UNCLEAN_SHUTDOWN;
-                }
-                int has_quota = (sb.s_feature_ro_compat
-                        & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_QUOTA)) != 0;
-                int want_quota = fs_mgr_is_quota(rec) != 0;
+// Read the primary superblock from an ext4 filesystem.  On failure return
+// false.  If it's not an ext4 filesystem, also set FS_STAT_EXT4_INVALID_MAGIC.
+static bool read_ext4_superblock(const char* blk_device, struct ext4_super_block* sb, int* fs_stat) {
+    android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(blk_device, O_RDONLY | O_CLOEXEC)));
 
-                if (has_quota == want_quota) {
-                    LINFO << "Requested quota status is match on " << blk_device;
-                    return force_check;
-                } else if (want_quota) {
-                    LINFO << "Enabling quota on " << blk_device;
-                    arg1 = "-Oquota";
-                    arg2 = "-Qusrquota,grpquota";
-                    force_check = 1;
-                    *fs_stat |= FS_STAT_QUOTA_ENABLED;
-                } else {
-                    LINFO << "Disabling quota on " << blk_device;
-                    arg1 = "-Q^usrquota,^grpquota";
-                    arg2 = "-O^quota";
-                }
-            } else {
-                PERROR << "Failed to open '" << blk_device << "'";
-                return force_check;
-            }
-
-            const char *tune2fs_argv[] = {
-                TUNE2FS_BIN,
-                arg1,
-                arg2,
-                blk_device,
-            };
-            ret = android_fork_execvp_ext(ARRAY_SIZE(tune2fs_argv),
-                                          const_cast<char **>(tune2fs_argv),
-                                          &status, true, LOG_KLOG | LOG_FILE,
-                                          true, NULL, NULL, 0);
-            if (ret < 0) {
-                /* No need to check for error in fork, we can't really handle it now */
-                LERROR << "Failed trying to run " << TUNE2FS_BIN;
-                *fs_stat |= FS_STAT_TUNE2FS_FAILED;
-            }
-        }
+    if (fd < 0) {
+        PERROR << "Failed to open '" << blk_device << "'";
+        return false;
     }
-    return force_check;
+
+    if (pread(fd, sb, sizeof(*sb), 1024) != sizeof(*sb)) {
+        PERROR << "Can't read '" << blk_device << "' superblock";
+        return false;
+    }
+
+    if (sb->s_magic != EXT4_SUPER_MAGIC) {
+        LINFO << "Invalid ext4 magic:0x" << std::hex << sb->s_magic << " "
+              << "on '" << blk_device << "'";
+        // not a valid fs, tune2fs, fsck, and mount  will all fail.
+        *fs_stat |= FS_STAT_EXT4_INVALID_MAGIC;
+        return false;
+    }
+    *fs_stat |= FS_STAT_IS_EXT4;
+    LINFO << "superblock s_max_mnt_count:" << sb->s_max_mnt_count << "," << blk_device;
+    if (sb->s_max_mnt_count == 0xffff) {  // -1 (int16) in ext2, but uint16 in ext4
+        *fs_stat |= FS_STAT_NEW_IMAGE_VERSION;
+    }
+    return true;
 }
 
-static void do_reserved_size(char *blk_device, char *fs_type, struct fstab_rec *rec, int *fs_stat)
-{
-    /* Check for the types of filesystems we know how to check */
-    if (!strcmp(fs_type, "ext2") || !strcmp(fs_type, "ext3") || !strcmp(fs_type, "ext4")) {
-        /*
-         * Some system images do not have tune2fs for licensing reasons
-         * Detect these and skip reserve blocks.
-         */
-        if (access(TUNE2FS_BIN, X_OK)) {
-            LERROR << "Not running " << TUNE2FS_BIN << " on "
-                   << blk_device << " (executable not in system image)";
+// Some system images do not have tune2fs for licensing reasons.
+// Detect these and skip running it.
+static bool tune2fs_available(void) {
+    return access(TUNE2FS_BIN, X_OK) == 0;
+}
+
+static bool run_tune2fs(const char* argv[], int argc) {
+    int ret;
+
+    ret = android_fork_execvp_ext(argc, const_cast<char**>(argv), nullptr, true,
+                                  LOG_KLOG | LOG_FILE, true, nullptr, nullptr, 0);
+    return ret == 0;
+}
+
+// Enable/disable quota support on the filesystem if needed.
+static void tune_quota(const char* blk_device, const struct fstab_rec* rec,
+                       const struct ext4_super_block* sb, int* fs_stat) {
+    bool has_quota = (sb->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_QUOTA)) != 0;
+    bool want_quota = fs_mgr_is_quota(rec) != 0;
+
+    if (has_quota == want_quota) {
+        return;
+    }
+
+    if (!tune2fs_available()) {
+        LERROR << "Unable to " << (want_quota ? "enable" : "disable") << " quotas on " << blk_device
+               << " because " TUNE2FS_BIN " is missing";
+        return;
+    }
+
+    const char* argv[] = {TUNE2FS_BIN, nullptr, nullptr, blk_device};
+
+    if (want_quota) {
+        LINFO << "Enabling quotas on " << blk_device;
+        argv[1] = "-Oquota";
+        argv[2] = "-Qusrquota,grpquota";
+        *fs_stat |= FS_STAT_QUOTA_ENABLED;
+    } else {
+        LINFO << "Disabling quotas on " << blk_device;
+        argv[1] = "-O^quota";
+        argv[2] = "-Q^usrquota,^grpquota";
+    }
+
+    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+        LERROR << "Failed to run " TUNE2FS_BIN " to " << (want_quota ? "enable" : "disable")
+               << " quotas on " << blk_device;
+        *fs_stat |= FS_STAT_TOGGLE_QUOTAS_FAILED;
+    }
+}
+
+// Set the number of reserved filesystem blocks if needed.
+static void tune_reserved_size(const char* blk_device, const struct fstab_rec* rec,
+                               const struct ext4_super_block* sb, int* fs_stat) {
+    if (!(rec->fs_mgr_flags & MF_RESERVEDSIZE)) {
+        return;
+    }
+
+    // The size to reserve is given in the fstab, but we won't reserve more
+    // than 2% of the filesystem.
+    const uint64_t max_reserved_blocks = ext4_blocks_count(sb) * 0.02;
+    uint64_t reserved_blocks = rec->reserved_size / EXT4_BLOCK_SIZE(sb);
+
+    if (reserved_blocks > max_reserved_blocks) {
+        LWARNING << "Reserved blocks " << reserved_blocks << " is too large; "
+                 << "capping to " << max_reserved_blocks;
+        reserved_blocks = max_reserved_blocks;
+    }
+
+    if (ext4_r_blocks_count(sb) == reserved_blocks) {
+        return;
+    }
+
+    if (!tune2fs_available()) {
+        LERROR << "Unable to set the number of reserved blocks on " << blk_device
+               << " because " TUNE2FS_BIN " is missing";
+        return;
+    }
+
+    char buf[32];
+    const char* argv[] = {TUNE2FS_BIN, "-r", buf, blk_device};
+
+    snprintf(buf, sizeof(buf), "%" PRIu64, reserved_blocks);
+    LINFO << "Setting reserved block count on " << blk_device << " to " << reserved_blocks;
+    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+        LERROR << "Failed to run " TUNE2FS_BIN " to set the number of reserved blocks on "
+               << blk_device;
+        *fs_stat |= FS_STAT_SET_RESERVED_BLOCKS_FAILED;
+    }
+}
+
+// Enable file-based encryption if needed.
+static void tune_encrypt(const char* blk_device, const struct fstab_rec* rec,
+                         const struct ext4_super_block* sb, int* fs_stat) {
+    bool has_encrypt = (sb->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_ENCRYPT)) != 0;
+    bool want_encrypt = fs_mgr_is_file_encrypted(rec) != 0;
+
+    if (has_encrypt || !want_encrypt) {
+        return;
+    }
+
+    if (!tune2fs_available()) {
+        LERROR << "Unable to enable ext4 encryption on " << blk_device
+               << " because " TUNE2FS_BIN " is missing";
+        return;
+    }
+
+    const char* argv[] = {TUNE2FS_BIN, "-Oencrypt", blk_device};
+
+    LINFO << "Enabling ext4 encryption on " << blk_device;
+    if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
+        LERROR << "Failed to run " TUNE2FS_BIN " to enable "
+               << "ext4 encryption on " << blk_device;
+        *fs_stat |= FS_STAT_ENABLE_ENCRYPTION_FAILED;
+    }
+}
+
+//
+// Prepare the filesystem on the given block device to be mounted.
+//
+// If the "check" option was given in the fstab record, or it seems that the
+// filesystem was uncleanly shut down, we'll run fsck on the filesystem.
+//
+// If needed, we'll also enable (or disable) filesystem features as specified by
+// the fstab record.
+//
+static int prepare_fs_for_mount(const char* blk_device, const struct fstab_rec* rec) {
+    int fs_stat = 0;
+
+    if (is_extfs(rec->fs_type)) {
+        struct ext4_super_block sb;
+
+        if (read_ext4_superblock(blk_device, &sb, &fs_stat)) {
+            if ((sb.s_feature_incompat & EXT4_FEATURE_INCOMPAT_RECOVER) != 0 ||
+                (sb.s_state & EXT4_VALID_FS) == 0) {
+                LINFO << "Filesystem on " << blk_device << " was not cleanly shutdown; "
+                      << "state flags: 0x" << std::hex << sb.s_state << ", "
+                      << "incompat feature flags: 0x" << std::hex << sb.s_feature_incompat;
+                fs_stat |= FS_STAT_UNCLEAN_SHUTDOWN;
+            }
+
+            // Note: quotas should be enabled before running fsck.
+            tune_quota(blk_device, rec, &sb, &fs_stat);
         } else {
-            LINFO << "Running " << TUNE2FS_BIN << " on " << blk_device;
-
-            int status = 0;
-            int ret = 0;
-            unsigned long reserved_blocks = 0;
-            android::base::unique_fd fd(
-                TEMP_FAILURE_RETRY(open(blk_device, O_RDONLY | O_CLOEXEC)));
-            if (fd >= 0) {
-                struct ext4_super_block sb;
-                ret = read_super_block(fd, &sb);
-                if (ret < 0) {
-                    PERROR << "Can't read '" << blk_device << "' super block";
-                    return;
-                }
-                reserved_blocks = rec->reserved_size / EXT4_BLOCK_SIZE(&sb);
-                unsigned long reserved_threshold = ext4_blocks_count(&sb) * 0.02;
-                if (reserved_threshold < reserved_blocks) {
-                    LWARNING << "Reserved blocks " << reserved_blocks
-                             << " is too large";
-                    reserved_blocks = reserved_threshold;
-                }
-
-                if (ext4_r_blocks_count(&sb) == reserved_blocks) {
-                    LINFO << "Have reserved same blocks";
-                    return;
-                }
-            } else {
-                PERROR << "Failed to open '" << blk_device << "'";
-                return;
-            }
-
-            char buf[16] = {0};
-            snprintf(buf, sizeof (buf), "-r %lu", reserved_blocks);
-            const char *tune2fs_argv[] = {
-                TUNE2FS_BIN,
-                buf,
-                blk_device,
-            };
-
-            ret = android_fork_execvp_ext(ARRAY_SIZE(tune2fs_argv),
-                                          const_cast<char **>(tune2fs_argv),
-                                          &status, true, LOG_KLOG | LOG_FILE,
-                                          true, NULL, NULL, 0);
-
-            if (ret < 0) {
-                /* No need to check for error in fork, we can't really handle it now */
-                LERROR << "Failed trying to run " << TUNE2FS_BIN;
-                *fs_stat |= FS_STAT_TUNE2FS_FAILED;
-            }
+            return fs_stat;
         }
     }
+
+    if ((rec->fs_mgr_flags & MF_CHECK) ||
+        (fs_stat & (FS_STAT_UNCLEAN_SHUTDOWN | FS_STAT_QUOTA_ENABLED))) {
+        check_fs(blk_device, rec->fs_type, rec->mount_point, &fs_stat);
+    }
+
+    if (is_extfs(rec->fs_type) && (rec->fs_mgr_flags & (MF_RESERVEDSIZE | MF_FILEENCRYPTION))) {
+        struct ext4_super_block sb;
+
+        if (read_ext4_superblock(blk_device, &sb, &fs_stat)) {
+            tune_reserved_size(blk_device, rec, &sb, &fs_stat);
+            tune_encrypt(blk_device, rec, &sb, &fs_stat);
+        }
+    }
+
+    return fs_stat;
 }
 
 static void remove_trailing_slashes(char *n)
@@ -457,6 +476,16 @@
     return rc;
 }
 
+// Orange state means the device is unlocked, see the following link for details.
+// https://source.android.com/security/verifiedboot/verified-boot#device_state
+bool fs_mgr_is_device_unlocked() {
+    std::string verified_boot_state;
+    if (fs_mgr_get_boot_config("verifiedbootstate", &verified_boot_state)) {
+        return verified_boot_state == "orange";
+    }
+    return false;
+}
+
 /*
  * __mount(): wrapper around the mount() system call which also
  * sets the underlying block device to read-only if the mount is read-only.
@@ -476,10 +505,11 @@
         if ((info.st_mode & S_IFMT) == S_IFLNK)
             unlink(target);
     mkdir(target, 0755);
+    errno = 0;
     ret = mount(source, target, rec->fs_type, mountflags, rec->fs_options);
     save_errno = errno;
-    LINFO << __FUNCTION__ << "(source=" << source << ",target="
-          << target << ",type=" << rec->fs_type << ")=" << ret;
+    PINFO << __FUNCTION__ << "(source=" << source << ",target=" << target
+          << ",type=" << rec->fs_type << ")=" << ret;
     if ((ret == 0) && (mountflags & MS_RDONLY) != 0) {
         fs_mgr_set_blk_ro(source);
     }
@@ -559,10 +589,7 @@
                 continue;
             }
 
-            int fs_stat = 0;
-            int force_check = do_quota_with_shutdown_check(fstab->recs[i].blk_device,
-                                                           fstab->recs[i].fs_type,
-                                                           &fstab->recs[i], &fs_stat);
+            int fs_stat = prepare_fs_for_mount(fstab->recs[i].blk_device, &fstab->recs[i]);
             if (fs_stat & FS_STAT_EXT4_INVALID_MAGIC) {
                 LERROR << __FUNCTION__ << "(): skipping mount, invalid ext4, mountpoint="
                        << fstab->recs[i].mount_point << " rec[" << i
@@ -570,15 +597,6 @@
                 mount_errno = EINVAL;  // continue bootup for FDE
                 continue;
             }
-            if ((fstab->recs[i].fs_mgr_flags & MF_CHECK) || force_check) {
-                check_fs(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
-                         fstab->recs[i].mount_point, &fs_stat);
-            }
-
-            if (fstab->recs[i].fs_mgr_flags & MF_RESERVEDSIZE) {
-                do_reserved_size(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
-                                 &fstab->recs[i], &fs_stat);
-            }
 
             int retry_count = 2;
             while (retry_count-- > 0) {
@@ -744,19 +762,6 @@
     }
 }
 
-// TODO: add ueventd notifiers if they don't exist.
-// This is just doing a wait_for_device for maximum of 1s
-int fs_mgr_test_access(const char *device) {
-    int tries = 25;
-    while (tries--) {
-        if (!access(device, F_OK) || errno != ENOENT) {
-            return 0;
-        }
-        usleep(40 * 1000);
-    }
-    return -1;
-}
-
 bool is_device_secure() {
     int ret = -1;
     char value[PROP_VALUE_MAX];
@@ -817,9 +822,7 @@
         }
 
         /* Translate LABEL= file system labels into block devices */
-        if (!strcmp(fstab->recs[i].fs_type, "ext2") ||
-            !strcmp(fstab->recs[i].fs_type, "ext3") ||
-            !strcmp(fstab->recs[i].fs_type, "ext4")) {
+        if (is_extfs(fstab->recs[i].fs_type)) {
             int tret = translate_ext_labels(&fstab->recs[i]);
             if (tret < 0) {
                 LERROR << "Could not translate label to block device";
@@ -827,8 +830,10 @@
             }
         }
 
-        if (fstab->recs[i].fs_mgr_flags & MF_WAIT) {
-            wait_for_file(fstab->recs[i].blk_device, WAIT_TIMEOUT);
+        if (fstab->recs[i].fs_mgr_flags & MF_WAIT &&
+            !fs_mgr_wait_for_file(fstab->recs[i].blk_device, 20s)) {
+            LERROR << "Skipping '" << fstab->recs[i].blk_device << "' during mount_all";
+            continue;
         }
 
         if (fstab->recs[i].fs_mgr_flags & MF_AVB) {
@@ -1031,22 +1036,12 @@
         }
 
         /* First check the filesystem if requested */
-        if (fstab->recs[i].fs_mgr_flags & MF_WAIT) {
-            wait_for_file(n_blk_device, WAIT_TIMEOUT);
+        if (fstab->recs[i].fs_mgr_flags & MF_WAIT && !fs_mgr_wait_for_file(n_blk_device, 20s)) {
+            LERROR << "Skipping mounting '" << n_blk_device << "'";
+            continue;
         }
 
-        int fs_stat = 0;
-        int force_check = do_quota_with_shutdown_check(n_blk_device, fstab->recs[i].fs_type,
-                                                       &fstab->recs[i], &fs_stat);
-
-        if ((fstab->recs[i].fs_mgr_flags & MF_CHECK) || force_check) {
-            check_fs(n_blk_device, fstab->recs[i].fs_type,
-                     fstab->recs[i].mount_point, &fs_stat);
-        }
-
-        if (fstab->recs[i].fs_mgr_flags & MF_RESERVEDSIZE) {
-            do_reserved_size(n_blk_device, fstab->recs[i].fs_type, &fstab->recs[i], &fs_stat);
-        }
+        int fs_stat = prepare_fs_for_mount(n_blk_device, &fstab->recs[i]);
 
         if (fstab->recs[i].fs_mgr_flags & MF_AVB) {
             if (!avb_handle) {
@@ -1205,8 +1200,11 @@
             fclose(zram_fp);
         }
 
-        if (fstab->recs[i].fs_mgr_flags & MF_WAIT) {
-            wait_for_file(fstab->recs[i].blk_device, WAIT_TIMEOUT);
+        if (fstab->recs[i].fs_mgr_flags & MF_WAIT &&
+            !fs_mgr_wait_for_file(fstab->recs[i].blk_device, 20s)) {
+            LERROR << "Skipping mkswap for '" << fstab->recs[i].blk_device << "'";
+            ret = -1;
+            continue;
         }
 
         /* Initialize the swap area */
diff --git a/fs_mgr/fs_mgr_avb.cpp b/fs_mgr/fs_mgr_avb.cpp
index 2c99aa7..7824cfa 100644
--- a/fs_mgr/fs_mgr_avb.cpp
+++ b/fs_mgr/fs_mgr_avb.cpp
@@ -397,7 +397,7 @@
     fstab_entry->blk_device = strdup(verity_blk_name.c_str());
 
     // Makes sure we've set everything up properly.
-    if (wait_for_verity_dev && fs_mgr_test_access(verity_blk_name.c_str()) < 0) {
+    if (wait_for_verity_dev && !fs_mgr_wait_for_file(verity_blk_name, 1s)) {
         return false;
     }
 
@@ -473,16 +473,6 @@
     return true;
 }
 
-// Orange state means the device is unlocked, see the following link for details.
-// https://source.android.com/security/verifiedboot/verified-boot#device_state
-static inline bool IsDeviceUnlocked() {
-    std::string verified_boot_state;
-    if (fs_mgr_get_boot_config("verifiedbootstate", &verified_boot_state)) {
-        return verified_boot_state == "orange";
-    }
-    return false;
-}
-
 FsManagerAvbUniquePtr FsManagerAvbHandle::Open(const fstab& fstab) {
     FsManagerAvbOps avb_ops(fstab);
     return DoOpen(&avb_ops);
@@ -498,7 +488,7 @@
 }
 
 FsManagerAvbUniquePtr FsManagerAvbHandle::DoOpen(FsManagerAvbOps* avb_ops) {
-    bool is_device_unlocked = IsDeviceUnlocked();
+    bool is_device_unlocked = fs_mgr_is_device_unlocked();
 
     FsManagerAvbUniquePtr avb_handle(new FsManagerAvbHandle());
     if (!avb_handle) {
diff --git a/fs_mgr/fs_mgr_avb_ops.cpp b/fs_mgr/fs_mgr_avb_ops.cpp
index ba1262f..43879fe 100644
--- a/fs_mgr/fs_mgr_avb_ops.cpp
+++ b/fs_mgr/fs_mgr_avb_ops.cpp
@@ -142,10 +142,8 @@
     }
     std::string path = iter->second;
 
-    // Ensures the device path (a symlink created by init) is ready to
-    // access. fs_mgr_test_access() will test a few iterations if the
-    // path doesn't exist yet.
-    if (fs_mgr_test_access(path.c_str()) < 0) {
+    // Ensures the device path (a symlink created by init) is ready to access.
+    if (!fs_mgr_wait_for_file(path, 1s)) {
         return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION;
     }
 
diff --git a/fs_mgr/fs_mgr_boot_config.cpp b/fs_mgr/fs_mgr_boot_config.cpp
index ab5beed..9117667 100644
--- a/fs_mgr/fs_mgr_boot_config.cpp
+++ b/fs_mgr/fs_mgr_boot_config.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <string>
+
 #include <android-base/file.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
@@ -51,9 +53,11 @@
     // lastly, check the device tree
     if (is_dt_compatible()) {
         std::string file_name = kAndroidDtDir + "/" + key;
-        // DT entries terminate with '\0' but so do the properties
         if (android::base::ReadFileToString(file_name, out_val)) {
-            return true;
+            if (!out_val->empty()) {
+                out_val->pop_back();  // Trims the trailing '\0' out.
+                return true;
+            }
         }
     }
 
diff --git a/fs_mgr/fs_mgr_fstab.cpp b/fs_mgr/fs_mgr_fstab.cpp
index 7a41b14..b68875b 100644
--- a/fs_mgr/fs_mgr_fstab.cpp
+++ b/fs_mgr/fs_mgr_fstab.cpp
@@ -810,32 +810,26 @@
     return fstab->fs_mgr_flags & MF_NOEMULATEDSD;
 }
 
-int fs_mgr_is_notrim(struct fstab_rec *fstab)
-{
+int fs_mgr_is_notrim(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & MF_NOTRIM;
 }
 
-int fs_mgr_is_formattable(struct fstab_rec *fstab)
-{
+int fs_mgr_is_formattable(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & (MF_FORMATTABLE);
 }
 
-int fs_mgr_is_slotselect(struct fstab_rec *fstab)
-{
+int fs_mgr_is_slotselect(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & MF_SLOTSELECT;
 }
 
-int fs_mgr_is_nofail(struct fstab_rec *fstab)
-{
+int fs_mgr_is_nofail(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & MF_NOFAIL;
 }
 
-int fs_mgr_is_latemount(struct fstab_rec *fstab)
-{
+int fs_mgr_is_latemount(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & MF_LATEMOUNT;
 }
 
-int fs_mgr_is_quota(struct fstab_rec *fstab)
-{
+int fs_mgr_is_quota(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & MF_QUOTA;
 }
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index c985462..5ea6e98 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -17,8 +17,12 @@
 #ifndef __CORE_FS_MGR_PRIV_H
 #define __CORE_FS_MGR_PRIV_H
 
+#include <chrono>
+#include <string>
+
 #include <android-base/logging.h>
-#include <fs_mgr.h>
+
+#include "fs_mgr.h"
 #include "fs_mgr_priv_boot_config.h"
 
 /* The CHECK() in logging.h will use program invocation name as the tag.
@@ -43,8 +47,6 @@
 
 #define CRYPTO_TMPFS_OPTIONS "size=256m,mode=0771,uid=1000,gid=1000"
 
-#define WAIT_TIMEOUT 20
-
 /* fstab has the following format:
  *
  * Any line starting with a # is a comment and ignored
@@ -110,9 +112,13 @@
 
 #define DM_BUF_SIZE 4096
 
+using namespace std::chrono_literals;
+
 int fs_mgr_set_blk_ro(const char *blockdev);
-int fs_mgr_test_access(const char *device);
+bool fs_mgr_wait_for_file(const std::string& filename,
+                          const std::chrono::milliseconds relative_timeout);
 bool fs_mgr_update_for_slotselect(struct fstab *fstab);
+bool fs_mgr_is_device_unlocked();
 bool is_dt_compatible();
 bool is_device_secure();
 int load_verity_state(struct fstab_rec* fstab, int* mode);
diff --git a/fs_mgr/fs_mgr_verity.cpp b/fs_mgr/fs_mgr_verity.cpp
index 8fa9370..5de0903 100644
--- a/fs_mgr/fs_mgr_verity.cpp
+++ b/fs_mgr/fs_mgr_verity.cpp
@@ -782,8 +782,8 @@
     if (fec_verity_get_metadata(f, &verity) < 0) {
         PERROR << "Failed to get verity metadata '" << fstab->blk_device << "'";
         // Allow verity disabled when the device is unlocked without metadata
-        if ("0" == android::base::GetProperty("ro.boot.flash.locked", "")) {
-            retval = FS_MGR_SETUP_VERITY_DISABLED;
+        if (fs_mgr_is_device_unlocked()) {
+            retval = FS_MGR_SETUP_VERITY_SKIPPED;
             LWARNING << "Allow invalid metadata when the device is unlocked";
         }
         goto out;
@@ -929,7 +929,7 @@
     }
 
     // make sure we've set everything up properly
-    if (wait_for_verity_dev && fs_mgr_test_access(fstab->blk_device) < 0) {
+    if (wait_for_verity_dev && !fs_mgr_wait_for_file(fstab->blk_device, 1s)) {
         goto out;
     }
 
diff --git a/fs_mgr/include_fstab/fstab/fstab.h b/fs_mgr/include_fstab/fstab/fstab.h
index 3ea4e03..17e1fb1 100644
--- a/fs_mgr/include_fstab/fstab/fstab.h
+++ b/fs_mgr/include_fstab/fstab/fstab.h
@@ -80,12 +80,12 @@
 const char* fs_mgr_get_file_encryption_mode(const struct fstab_rec* fstab);
 int fs_mgr_is_convertible_to_fbe(const struct fstab_rec* fstab);
 int fs_mgr_is_noemulatedsd(const struct fstab_rec* fstab);
-int fs_mgr_is_notrim(struct fstab_rec* fstab);
-int fs_mgr_is_formattable(struct fstab_rec* fstab);
-int fs_mgr_is_slotselect(struct fstab_rec* fstab);
-int fs_mgr_is_nofail(struct fstab_rec* fstab);
-int fs_mgr_is_latemount(struct fstab_rec* fstab);
-int fs_mgr_is_quota(struct fstab_rec* fstab);
+int fs_mgr_is_notrim(const struct fstab_rec* fstab);
+int fs_mgr_is_formattable(const struct fstab_rec* fstab);
+int fs_mgr_is_slotselect(const struct fstab_rec* fstab);
+int fs_mgr_is_nofail(const struct fstab_rec* fstab);
+int fs_mgr_is_latemount(const struct fstab_rec* fstab);
+int fs_mgr_is_quota(const struct fstab_rec* fstab);
 
 __END_DECLS
 
diff --git a/healthd/BatteryPropertiesRegistrar.cpp b/healthd/BatteryPropertiesRegistrar.cpp
index 523e1f1..e51a06d 100644
--- a/healthd/BatteryPropertiesRegistrar.cpp
+++ b/healthd/BatteryPropertiesRegistrar.cpp
@@ -36,9 +36,19 @@
 }
 
 void BatteryPropertiesRegistrar::notifyListeners(const struct BatteryProperties& props) {
-    Mutex::Autolock _l(mRegistrationLock);
-    for (size_t i = 0; i < mListeners.size(); i++) {
-        mListeners[i]->batteryPropertiesChanged(props);
+    Vector<sp<IBatteryPropertiesListener> > listenersCopy;
+
+    // Binder currently may service an incoming oneway transaction whenever an
+    // outbound oneway call is made (if there is already a pending incoming
+    // oneway call waiting).  This is considered a bug and may change in the
+    // future.  For now, avoid recursive mutex lock while making outbound
+    // calls by making a local copy of the current list of listeners.
+    {
+        Mutex::Autolock _l(mRegistrationLock);
+        listenersCopy = mListeners;
+    }
+    for (size_t i = 0; i < listenersCopy.size(); i++) {
+        listenersCopy[i]->batteryPropertiesChanged(props);
     }
 }
 
diff --git a/init/Android.bp b/init/Android.bp
index fce424e..47578ea 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -153,6 +153,7 @@
         "init_test.cpp",
         "property_service_test.cpp",
         "service_test.cpp",
+        "ueventd_test.cpp",
         "util_test.cpp",
     ],
     shared_libs: [
diff --git a/init/README.md b/init/README.md
index 72b6c6b..422fdad 100644
--- a/init/README.md
+++ b/init/README.md
@@ -260,6 +260,14 @@
 > Sets the child's /proc/self/oom\_score\_adj to the specified value,
   which must range from -1000 to 1000.
 
+`shutdown <shutdown_behavior>`
+> Set shutdown behavior of the service process. When this is not specified,
+  the service is killed during shutdown process by using SIGTERM and SIGKILL.
+  The service with shutdown_behavior of "critical" is not killed during shutdown
+  until shutdown times out. When shutdown times out, even services tagged with
+  "shutdown critical" will be killed. When the service tagged with "shutdown critical"
+  is not running when shut down starts, it will be started.
+
 
 Triggers
 --------
diff --git a/init/action.cpp b/init/action.cpp
index 6900391..4ec5f17 100644
--- a/init/action.cpp
+++ b/init/action.cpp
@@ -16,6 +16,7 @@
 
 #include "action.h"
 
+#include <android-base/chrono_utils.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/strings.h>
@@ -90,19 +91,18 @@
 }
 
 void Action::ExecuteCommand(const Command& command) const {
-    Timer t;
+    android::base::Timer t;
     int result = command.InvokeFunc();
 
-    double duration_ms = t.duration_s() * 1000;
+    auto duration = t.duration();
     // Any action longer than 50ms will be warned to user as slow operation
-    if (duration_ms > 50.0 ||
-        android::base::GetMinimumLogSeverity() <= android::base::DEBUG) {
+    if (duration > 50ms || android::base::GetMinimumLogSeverity() <= android::base::DEBUG) {
         std::string trigger_name = BuildTriggersString();
         std::string cmd_str = command.BuildCommandString();
 
         LOG(INFO) << "Command '" << cmd_str << "' action=" << trigger_name << " (" << filename_
-                  << ":" << command.line() << ") returned " << result << " took " << duration_ms
-                  << "ms.";
+                  << ":" << command.line() << ") returned " << result << " took "
+                  << duration.count() << "ms.";
     }
 }
 
@@ -326,6 +326,13 @@
     }
 }
 
+void ActionManager::ClearQueue() {
+    // We are shutting down so don't claim the oneshot builtin actions back
+    current_executing_actions_ = {};
+    event_queue_ = {};
+    current_command_ = 0;
+}
+
 bool ActionParser::ParseSection(std::vector<std::string>&& args, const std::string& filename,
                                 int line, std::string* err) {
     std::vector<std::string> triggers(args.begin() + 1, args.end());
diff --git a/init/action.h b/init/action.h
index 5cb50a7..ad15f3f 100644
--- a/init/action.h
+++ b/init/action.h
@@ -104,6 +104,7 @@
     void ExecuteOneCommand();
     bool HasMoreCommands() const;
     void DumpState() const;
+    void ClearQueue();
 
   private:
     ActionManager(ActionManager const&) = delete;
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 00ffbc3..dfd7b73 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -39,6 +39,7 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
@@ -119,7 +120,7 @@
         LOG(ERROR) << "failed to set bootloader message: " << err;
         return -1;
     }
-    DoReboot(ANDROID_RB_RESTART2, "reboot", "recovery", false);
+    property_set("sys.powerctl", "reboot,recovery");
     return 0;
 }
 
@@ -538,9 +539,9 @@
     }
 
     std::string prop_name = "ro.boottime.init.mount_all."s + prop_post_fix;
-    Timer t;
+    android::base::Timer t;
     int ret =  mount_fstab(fstabfile, mount_mode);
-    property_set(prop_name, std::to_string(t.duration_ms()));
+    property_set(prop_name, std::to_string(t.duration().count()));
 
     if (import_rc) {
         /* Paths of .rc files are specified at the 2nd argument and beyond */
diff --git a/init/capabilities.cpp b/init/capabilities.cpp
index 53832a4..642a364 100644
--- a/init/capabilities.cpp
+++ b/init/capabilities.cpp
@@ -107,17 +107,15 @@
 }
 
 static bool SetProcCaps(const CapSet& to_keep, bool add_setpcap) {
-    cap_t caps = cap_init();
-    auto deleter = [](cap_t* p) { cap_free(*p); };
-    std::unique_ptr<cap_t, decltype(deleter)> ptr_caps(&caps, deleter);
+    ScopedCaps caps(cap_init());
 
-    cap_clear(caps);
+    cap_clear(caps.get());
     cap_value_t value[1];
     for (size_t cap = 0; cap < to_keep.size(); ++cap) {
         if (to_keep.test(cap)) {
             value[0] = cap;
-            if (cap_set_flag(caps, CAP_INHERITABLE, arraysize(value), value, CAP_SET) != 0 ||
-                cap_set_flag(caps, CAP_PERMITTED, arraysize(value), value, CAP_SET) != 0) {
+            if (cap_set_flag(caps.get(), CAP_INHERITABLE, arraysize(value), value, CAP_SET) != 0 ||
+                cap_set_flag(caps.get(), CAP_PERMITTED, arraysize(value), value, CAP_SET) != 0) {
                 PLOG(ERROR) << "cap_set_flag(INHERITABLE|PERMITTED, " << cap << ") failed";
                 return false;
             }
@@ -126,14 +124,14 @@
 
     if (add_setpcap) {
         value[0] = CAP_SETPCAP;
-        if (cap_set_flag(caps, CAP_PERMITTED, arraysize(value), value, CAP_SET) != 0 ||
-            cap_set_flag(caps, CAP_EFFECTIVE, arraysize(value), value, CAP_SET) != 0) {
+        if (cap_set_flag(caps.get(), CAP_PERMITTED, arraysize(value), value, CAP_SET) != 0 ||
+            cap_set_flag(caps.get(), CAP_EFFECTIVE, arraysize(value), value, CAP_SET) != 0) {
             PLOG(ERROR) << "cap_set_flag(PERMITTED|EFFECTIVE, " << CAP_SETPCAP << ") failed";
             return false;
         }
     }
 
-    if (cap_set_proc(caps) != 0) {
+    if (cap_set_proc(caps.get()) != 0) {
         PLOG(ERROR) << "cap_set_proc(" << to_keep.to_ulong() << ") failed";
         return false;
     }
diff --git a/init/capabilities.h b/init/capabilities.h
index ef507a6..ede85c3 100644
--- a/init/capabilities.h
+++ b/init/capabilities.h
@@ -15,15 +15,21 @@
 #ifndef _INIT_CAPABILITIES_H
 #define _INIT_CAPABILITIES_H
 
-#include <linux/capability.h>
+#include <sys/capability.h>
 
 #include <bitset>
 #include <string>
+#include <type_traits>
 
 namespace android {
 namespace init {
 
+struct CapDeleter {
+    void operator()(cap_t caps) const { cap_free(caps); }
+};
+
 using CapSet = std::bitset<CAP_LAST_CAP + 1>;
+using ScopedCaps = std::unique_ptr<std::remove_pointer<cap_t>::type, CapDeleter>;
 
 int LookupCap(const std::string& cap_name);
 bool CapAmbientSupported();
diff --git a/init/devices.cpp b/init/devices.cpp
index 215d2ea..13cf991 100644
--- a/init/devices.cpp
+++ b/init/devices.cpp
@@ -219,7 +219,7 @@
     return {0600, 0, 0};
 }
 
-void DeviceHandler::MakeDevice(const std::string& path, int block, int major, int minor,
+void DeviceHandler::MakeDevice(const std::string& path, bool block, int major, int minor,
                                const std::vector<std::string>& links) const {
     auto[mode, uid, gid] = GetDevicePermissions(path, links);
     mode |= (block ? S_IFBLK : S_IFCHR);
@@ -279,45 +279,6 @@
     }
 }
 
-std::vector<std::string> DeviceHandler::GetCharacterDeviceSymlinks(const Uevent& uevent) const {
-    std::string parent_device;
-    if (!FindPlatformDevice(uevent.path, &parent_device)) return {};
-
-    // skip path to the parent driver
-    std::string path = uevent.path.substr(parent_device.length());
-
-    if (!StartsWith(path, "/usb")) return {};
-
-    // skip root hub name and device. use device interface
-    // skip 3 slashes, including the first / by starting the search at the 1st character, not 0th.
-    // then extract what comes between the 3rd and 4th slash
-    // e.g. "/usb/usb_device/name/tty2-1:1.0" -> "name"
-
-    std::string::size_type start = 0;
-    start = path.find('/', start + 1);
-    if (start == std::string::npos) return {};
-
-    start = path.find('/', start + 1);
-    if (start == std::string::npos) return {};
-
-    auto end = path.find('/', start + 1);
-    if (end == std::string::npos) return {};
-
-    start++;  // Skip the first '/'
-
-    auto length = end - start;
-    if (length == 0) return {};
-
-    auto name_string = path.substr(start, length);
-
-    std::vector<std::string> links;
-    links.emplace_back("/dev/usb/" + uevent.subsystem + name_string);
-
-    mkdir("/dev/usb", 0755);
-
-    return links;
-}
-
 // replaces any unacceptable characters with '_', the
 // length of the resulting string is equal to the input string
 void SanitizePartitionName(std::string* string) {
@@ -385,7 +346,7 @@
     return links;
 }
 
-void DeviceHandler::HandleDevice(const std::string& action, const std::string& devpath, int block,
+void DeviceHandler::HandleDevice(const std::string& action, const std::string& devpath, bool block,
                                  int major, int minor, const std::vector<std::string>& links) const {
     if (action == "add") {
         MakeDevice(devpath, block, major, minor, links);
@@ -411,31 +372,26 @@
     }
 }
 
-void DeviceHandler::HandleBlockDeviceEvent(const Uevent& uevent) const {
-    // if it's not a /dev device, nothing to do
-    if (uevent.major < 0 || uevent.minor < 0) return;
-
-    const char* base = "/dev/block/";
-    make_dir(base, 0755, sehandle_);
-
-    std::string name = Basename(uevent.path);
-    std::string devpath = base + name;
-
-    std::vector<std::string> links;
-    if (StartsWith(uevent.path, "/devices")) {
-        links = GetBlockDeviceSymlinks(uevent);
+void DeviceHandler::HandleDeviceEvent(const Uevent& uevent) {
+    if (uevent.action == "add" || uevent.action == "change" || uevent.action == "online") {
+        FixupSysPermissions(uevent.path, uevent.subsystem);
     }
 
-    HandleDevice(uevent.action, devpath, 1, uevent.major, uevent.minor, links);
-}
-
-void DeviceHandler::HandleGenericDeviceEvent(const Uevent& uevent) const {
     // if it's not a /dev device, nothing to do
     if (uevent.major < 0 || uevent.minor < 0) return;
 
     std::string devpath;
+    std::vector<std::string> links;
+    bool block = false;
 
-    if (StartsWith(uevent.subsystem, "usb")) {
+    if (uevent.subsystem == "block") {
+        block = true;
+        devpath = "/dev/block/" + Basename(uevent.path);
+
+        if (StartsWith(uevent.path, "/devices")) {
+            links = GetBlockDeviceSymlinks(uevent);
+        }
+    } else if (StartsWith(uevent.subsystem, "usb")) {
         if (uevent.subsystem == "usb") {
             if (!uevent.device_name.empty()) {
                 devpath = "/dev/" + uevent.device_name;
@@ -461,21 +417,7 @@
 
     mkdir_recursive(Dirname(devpath), 0755, sehandle_);
 
-    auto links = GetCharacterDeviceSymlinks(uevent);
-
-    HandleDevice(uevent.action, devpath, 0, uevent.major, uevent.minor, links);
-}
-
-void DeviceHandler::HandleDeviceEvent(const Uevent& uevent) {
-    if (uevent.action == "add" || uevent.action == "change" || uevent.action == "online") {
-        FixupSysPermissions(uevent.path, uevent.subsystem);
-    }
-
-    if (uevent.subsystem == "block") {
-        HandleBlockDeviceEvent(uevent);
-    } else {
-        HandleGenericDeviceEvent(uevent);
-    }
+    HandleDevice(uevent.action, devpath, block, uevent.major, uevent.minor, links);
 }
 
 DeviceHandler::DeviceHandler(std::vector<Permissions> dev_permissions,
diff --git a/init/devices.h b/init/devices.h
index 5105ad7..c64f5fb 100644
--- a/init/devices.h
+++ b/init/devices.h
@@ -115,16 +115,12 @@
     bool FindPlatformDevice(std::string path, std::string* platform_device_path) const;
     std::tuple<mode_t, uid_t, gid_t> GetDevicePermissions(
         const std::string& path, const std::vector<std::string>& links) const;
-    void MakeDevice(const std::string& path, int block, int major, int minor,
+    void MakeDevice(const std::string& path, bool block, int major, int minor,
                     const std::vector<std::string>& links) const;
-    std::vector<std::string> GetCharacterDeviceSymlinks(const Uevent& uevent) const;
-    void HandleDevice(const std::string& action, const std::string& devpath, int block, int major,
+    void HandleDevice(const std::string& action, const std::string& devpath, bool block, int major,
                       int minor, const std::vector<std::string>& links) const;
     void FixupSysPermissions(const std::string& upath, const std::string& subsystem) const;
 
-    void HandleBlockDeviceEvent(const Uevent& uevent) const;
-    void HandleGenericDeviceEvent(const Uevent& uevent) const;
-
     std::vector<Permissions> dev_permissions_;
     std::vector<SysfsPermissions> sysfs_permissions_;
     std::vector<Subsystem> subsystems_;
diff --git a/init/devices_test.cpp b/init/devices_test.cpp
index 57d8e0f..ac4ab9b 100644
--- a/init/devices_test.cpp
+++ b/init/devices_test.cpp
@@ -30,7 +30,7 @@
 class DeviceHandlerTester {
   public:
     void TestGetSymlinks(const std::string& platform_device, const Uevent& uevent,
-                         const std::vector<std::string> expected_links, bool block) {
+                         const std::vector<std::string> expected_links) {
         TemporaryDir fake_sys_root;
         device_handler_.sysfs_mount_point_ = fake_sys_root.path;
 
@@ -44,11 +44,7 @@
         mkdir_recursive(android::base::Dirname(fake_sys_root.path + uevent.path), 0777, nullptr);
 
         std::vector<std::string> result;
-        if (block) {
-            result = device_handler_.GetBlockDeviceSymlinks(uevent);
-        } else {
-            result = device_handler_.GetCharacterDeviceSymlinks(uevent);
-        }
+        result = device_handler_.GetBlockDeviceSymlinks(uevent);
 
         auto expected_size = expected_links.size();
         ASSERT_EQ(expected_size, result.size());
@@ -64,95 +60,6 @@
     DeviceHandler device_handler_;
 };
 
-TEST(device_handler, get_character_device_symlinks_success) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name/usb/usb_device/name/tty2-1:1.0",
-        .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result{"/dev/usb/ttyname"};
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_no_pdev_match) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/device/name/tty2-1:1.0", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_nothing_after_platform_device) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_no_usb_found) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name/bad/bad/", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_no_roothub) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name/usb/", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_no_usb_device) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name/usb/usb_device/", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_no_final_slash) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name/usb/usb_device/name", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
-TEST(device_handler, get_character_device_symlinks_no_final_name) {
-    const char* platform_device = "/devices/platform/some_device_name";
-    Uevent uevent = {
-        .path = "/devices/platform/some_device_name/usb/usb_device//", .subsystem = "tty",
-    };
-    std::vector<std::string> expected_result;
-
-    DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, false);
-}
-
 TEST(device_handler, get_block_device_symlinks_success_platform) {
     // These are actual paths from bullhead
     const char* platform_device = "/devices/soc.0/f9824900.sdhci";
@@ -164,7 +71,7 @@
     std::vector<std::string> expected_result{"/dev/block/platform/soc.0/f9824900.sdhci/mmcblk0"};
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_success_platform_with_partition) {
@@ -182,7 +89,7 @@
     };
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_success_platform_with_partition_only_num) {
@@ -198,7 +105,7 @@
     };
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_success_platform_with_partition_only_name) {
@@ -214,7 +121,7 @@
     };
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_success_pci) {
@@ -225,7 +132,7 @@
     std::vector<std::string> expected_result{"/dev/block/pci/pci0000:00/0000:00:1f.2/mmcblk0"};
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_pci_bad_format) {
@@ -236,7 +143,7 @@
     std::vector<std::string> expected_result{};
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_success_vbd) {
@@ -247,7 +154,7 @@
     std::vector<std::string> expected_result{"/dev/block/vbd/1234/mmcblk0"};
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_vbd_bad_format) {
@@ -258,7 +165,7 @@
     std::vector<std::string> expected_result{};
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, get_block_device_symlinks_no_matches) {
@@ -271,7 +178,7 @@
     std::vector<std::string> expected_result;
 
     DeviceHandlerTester device_handler_tester_;
-    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result, true);
+    device_handler_tester_.TestGetSymlinks(platform_device, uevent, expected_result);
 }
 
 TEST(device_handler, sanitize_null) {
diff --git a/init/firmware_handler.cpp b/init/firmware_handler.cpp
index 8cd5cc5..b686885 100644
--- a/init/firmware_handler.cpp
+++ b/init/firmware_handler.cpp
@@ -24,12 +24,12 @@
 #include <string>
 #include <thread>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/unique_fd.h>
 
-#include "util.h"
-
+using android::base::Timer;
 using android::base::unique_fd;
 using android::base::WriteFully;
 
@@ -110,31 +110,16 @@
     if (uevent.subsystem != "firmware" || uevent.action != "add") return;
 
     // Loading the firmware in a child means we can do that in parallel...
-    // We double fork instead of waiting for these processes.
-    pid_t pid = fork();
+    auto pid = fork();
     if (pid == -1) {
         PLOG(ERROR) << "could not fork to process firmware event for " << uevent.firmware;
-        return;
     }
-
     if (pid == 0) {
-        pid = fork();
-        if (pid == -1) {
-            PLOG(ERROR) << "could not fork a sceond time to process firmware event for "
-                        << uevent.firmware;
-            _exit(EXIT_FAILURE);
-        }
-        if (pid == 0) {
-            Timer t;
-            ProcessFirmwareEvent(uevent);
-            LOG(INFO) << "loading " << uevent.path << " took " << t;
-            _exit(EXIT_SUCCESS);
-        }
-
+        Timer t;
+        ProcessFirmwareEvent(uevent);
+        LOG(INFO) << "loading " << uevent.path << " took " << t;
         _exit(EXIT_SUCCESS);
     }
-
-    waitpid(pid, nullptr, 0);
 }
 
 }  // namespace init
diff --git a/init/init.cpp b/init/init.cpp
index ec43cb4..b0b2e49 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -73,6 +73,7 @@
 
 using android::base::boot_clock;
 using android::base::GetProperty;
+using android::base::Timer;
 
 namespace android {
 namespace init {
@@ -94,6 +95,7 @@
 static std::unique_ptr<Timer> waiting_for_prop(nullptr);
 static std::string wait_prop_name;
 static std::string wait_prop_value;
+static bool shutting_down;
 
 void DumpState() {
     ServiceManager::GetInstance().DumpState();
@@ -158,21 +160,31 @@
     return true;
 }
 
+void ResetWaitForProp() {
+    wait_prop_name.clear();
+    wait_prop_value.clear();
+    waiting_for_prop.reset();
+}
+
 void property_changed(const std::string& name, const std::string& value) {
     // If the property is sys.powerctl, we bypass the event queue and immediately handle it.
     // This is to ensure that init will always and immediately shutdown/reboot, regardless of
     // if there are other pending events to process or if init is waiting on an exec service or
     // waiting on a property.
-    if (name == "sys.powerctl") HandlePowerctlMessage(value);
+    // In non-thermal-shutdown case, 'shutdown' trigger will be fired to let device specific
+    // commands to be executed.
+    if (name == "sys.powerctl") {
+        if (HandlePowerctlMessage(value)) {
+            shutting_down = true;
+        }
+    }
 
     if (property_triggers_enabled) ActionManager::GetInstance().QueuePropertyChange(name, value);
 
     if (waiting_for_prop) {
         if (wait_prop_name == name && wait_prop_value == value) {
-            wait_prop_name.clear();
-            wait_prop_value.clear();
             LOG(INFO) << "Wait for property took " << *waiting_for_prop;
-            waiting_for_prop.reset();
+            ResetWaitForProp();
         }
     }
 }
@@ -221,7 +233,7 @@
         panic();
     }
 
-    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration_ms()));
+    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration().count()));
     return 0;
 }
 
@@ -862,7 +874,7 @@
         }
 
         // init's first stage can't set properties, so pass the time to the second stage.
-        setenv("INIT_SELINUX_TOOK", std::to_string(t.duration_ms()).c_str(), 1);
+        setenv("INIT_SELINUX_TOOK", std::to_string(t.duration().count()).c_str(), 1);
     } else {
         selinux_init_all_handles();
     }
@@ -1138,7 +1150,7 @@
             am.ExecuteOneCommand();
         }
         if (!(waiting_for_prop || sm.IsWaitingForExec())) {
-            restart_processes();
+            if (!shutting_down) restart_processes();
 
             // If there's a process that needs restarting, wake up in time for that.
             if (process_needs_restart_at != 0) {
diff --git a/init/init.h b/init/init.h
index 479b771..aaab523 100644
--- a/init/init.h
+++ b/init/init.h
@@ -44,6 +44,8 @@
 
 void DumpState();
 
+void ResetWaitForProp();
+
 }  // namespace init
 }  // namespace android
 
diff --git a/init/init_first_stage.cpp b/init/init_first_stage.cpp
index e10c3b2..0f7e38f 100644
--- a/init/init_first_stage.cpp
+++ b/init/init_first_stage.cpp
@@ -25,6 +25,7 @@
 #include <string>
 #include <vector>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/strings.h>
@@ -36,7 +37,7 @@
 #include "uevent_listener.h"
 #include "util.h"
 
-using namespace std::chrono_literals;
+using android::base::Timer;
 
 namespace android {
 namespace init {
@@ -171,10 +172,13 @@
         };
         uevent_listener_.RegenerateUeventsForPath("/sys" + dm_path, dm_callback);
         if (!found) {
+            LOG(INFO) << "device-mapper device not found in /sys, waiting for its uevent";
+            Timer t;
             uevent_listener_.Poll(dm_callback, 10s);
+            LOG(INFO) << "Wait for device-mapper returned after " << t;
         }
         if (!found) {
-            LOG(ERROR) << "device-mapper device not found";
+            LOG(ERROR) << "device-mapper device not found after polling timeout";
             return false;
         }
     }
@@ -185,11 +189,16 @@
     // UeventCallback() will remove found partitions from required_devices_partition_names_.
     // So if it isn't empty here, it means some partitions are not found.
     if (!required_devices_partition_names_.empty()) {
+        LOG(INFO) << __PRETTY_FUNCTION__
+                  << ": partition(s) not found in /sys, waiting for their uevent(s): "
+                  << android::base::Join(required_devices_partition_names_, ", ");
+        Timer t;
         uevent_listener_.Poll(uevent_callback, 10s);
+        LOG(INFO) << "Wait for partitions returned after " << t;
     }
 
     if (!required_devices_partition_names_.empty()) {
-        LOG(ERROR) << __PRETTY_FUNCTION__ << ": partition(s) not found: "
+        LOG(ERROR) << __PRETTY_FUNCTION__ << ": partition(s) not found after polling timeout: "
                    << android::base::Join(required_devices_partition_names_, ", ");
         return false;
     }
@@ -241,10 +250,13 @@
 
     uevent_listener_.RegenerateUeventsForPath(syspath, verity_callback);
     if (!found) {
+        LOG(INFO) << "dm-verity device not found in /sys, waiting for its uevent";
+        Timer t;
         uevent_listener_.Poll(verity_callback, 10s);
+        LOG(INFO) << "wait for dm-verity device returned after " << t;
     }
     if (!found) {
-        LOG(ERROR) << "dm-verity device not found";
+        LOG(ERROR) << "dm-verity device not found after polling timeout";
         return false;
     }
 
diff --git a/init/init_parser.cpp b/init/init_parser.cpp
index e76d589..9f7089b 100644
--- a/init/init_parser.cpp
+++ b/init/init_parser.cpp
@@ -18,6 +18,7 @@
 
 #include <dirent.h>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
@@ -111,7 +112,7 @@
 
 bool Parser::ParseConfigFile(const std::string& path) {
     LOG(INFO) << "Parsing file " << path << "...";
-    Timer t;
+    android::base::Timer t;
     std::string data;
     std::string err;
     if (!ReadFile(path, &data, &err)) {
diff --git a/init/init_parser_test.cpp b/init/init_parser_test.cpp
index 38b8275..95f269a 100644
--- a/init/init_parser_test.cpp
+++ b/init/init_parser_test.cpp
@@ -16,13 +16,14 @@
 
 #include "init_parser.h"
 
-#include "init.h"
-#include "service.h"
+#include <string>
+#include <vector>
 
 #include <gtest/gtest.h>
 
-#include <string>
-#include <vector>
+#include "init.h"
+#include "service.h"
+#include "util.h"
 
 namespace android {
 namespace init {
diff --git a/init/property_service.cpp b/init/property_service.cpp
index 0af6c21..925cc9b 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -42,6 +42,7 @@
 #include <queue>
 #include <vector>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
@@ -55,6 +56,8 @@
 #include "init.h"
 #include "util.h"
 
+using android::base::Timer;
+
 #define PERSISTENT_PROPERTY_DIR  "/data/property"
 #define RECOVERY_MOUNT_POINT "/recovery"
 
@@ -350,7 +353,7 @@
     while (*timeout_ms > 0) {
       Timer timer;
       int nr = poll(ufds, 1, *timeout_ms);
-      uint64_t millis = timer.duration_ms();
+      uint64_t millis = timer.duration().count();
       *timeout_ms = (millis > *timeout_ms) ? 0 : *timeout_ms - millis;
 
       if (nr > 0) {
diff --git a/init/reboot.cpp b/init/reboot.cpp
index df7912f..8196d58 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -20,7 +20,7 @@
 #include <fcntl.h>
 #include <linux/fs.h>
 #include <mntent.h>
-#include <selinux/selinux.h>
+#include <sys/capability.h>
 #include <sys/cdefs.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
@@ -35,6 +35,7 @@
 #include <thread>
 #include <vector>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/macros.h>
@@ -48,10 +49,13 @@
 #include <logwrap/logwrap.h>
 #include <private/android_filesystem_config.h>
 
+#include "capabilities.h"
+#include "init.h"
 #include "property_service.h"
 #include "service.h"
 
 using android::base::StringPrintf;
+using android::base::Timer;
 
 namespace android {
 namespace init {
@@ -159,12 +163,42 @@
 }
 
 static void LogShutdownTime(UmountStat stat, Timer* t) {
-    LOG(WARNING) << "powerctl_shutdown_time_ms:" << std::to_string(t->duration_ms()) << ":" << stat;
+    LOG(WARNING) << "powerctl_shutdown_time_ms:" << std::to_string(t->duration().count()) << ":"
+                 << stat;
+}
+
+// Determines whether the system is capable of rebooting. This is conservative,
+// so if any of the attempts to determine this fail, it will still return true.
+static bool IsRebootCapable() {
+    if (!CAP_IS_SUPPORTED(CAP_SYS_BOOT)) {
+        PLOG(WARNING) << "CAP_SYS_BOOT is not supported";
+        return true;
+    }
+
+    ScopedCaps caps(cap_get_proc());
+    if (!caps) {
+        PLOG(WARNING) << "cap_get_proc() failed";
+        return true;
+    }
+
+    cap_flag_value_t value = CAP_SET;
+    if (cap_get_flag(caps.get(), CAP_SYS_BOOT, CAP_EFFECTIVE, &value) != 0) {
+        PLOG(WARNING) << "cap_get_flag(CAP_SYS_BOOT, EFFECTIVE) failed";
+        return true;
+    }
+    return value == CAP_SET;
 }
 
 static void __attribute__((noreturn))
 RebootSystem(unsigned int cmd, const std::string& rebootTarget) {
     LOG(INFO) << "Reboot ending, jumping to kernel";
+
+    if (!IsRebootCapable()) {
+        // On systems where init does not have the capability of rebooting the
+        // device, just exit cleanly.
+        exit(0);
+    }
+
     switch (cmd) {
         case ANDROID_RB_POWEROFF:
             reboot(RB_POWER_OFF);
@@ -200,7 +234,12 @@
             LOG(INFO) << "mount entry " << mentry->mnt_fsname << ":" << mentry->mnt_dir << " opts "
                       << mentry->mnt_opts << " type " << mentry->mnt_type;
         } else if (MountEntry::IsBlockDevice(*mentry) && hasmntopt(mentry, "rw")) {
-            blockDevPartitions->emplace(blockDevPartitions->begin(), *mentry);
+            std::string mount_dir(mentry->mnt_dir);
+            // These are R/O partitions changed to R/W after adb remount.
+            // Do not umount them as shutdown critical services may rely on them.
+            if (mount_dir != "/system" && mount_dir != "/vendor" && mount_dir != "/oem") {
+                blockDevPartitions->emplace(blockDevPartitions->begin(), *mentry);
+            }
         } else if (MountEntry::IsEmulatedDevice(*mentry)) {
             emulatedPartitions->emplace(emulatedPartitions->begin(), *mentry);
         }
@@ -223,7 +262,7 @@
     }
 }
 
-static UmountStat UmountPartitions(int timeoutMs) {
+static UmountStat UmountPartitions(std::chrono::milliseconds timeout) {
     Timer t;
     UmountStat stat = UMOUNT_STAT_TIMEOUT;
     int retry = 0;
@@ -241,7 +280,7 @@
             stat = UMOUNT_STAT_SUCCESS;
             break;
         }
-        if ((timeoutMs < t.duration_ms()) && retry > 0) {  // try umount at least once
+        if ((timeout < t.duration()) && retry > 0) {  // try umount at least once
             stat = UMOUNT_STAT_TIMEOUT;
             break;
         }
@@ -270,7 +309,7 @@
  *
  * return true when umount was successful. false when timed out.
  */
-static UmountStat TryUmountAndFsck(bool runFsck, int timeoutMs) {
+static UmountStat TryUmountAndFsck(bool runFsck, std::chrono::milliseconds timeout) {
     Timer t;
     std::vector<MountEntry> block_devices;
     std::vector<MountEntry> emulated_devices;
@@ -281,13 +320,13 @@
         return UMOUNT_STAT_ERROR;
     }
 
-    UmountStat stat = UmountPartitions(timeoutMs - t.duration_ms());
+    UmountStat stat = UmountPartitions(timeout - t.duration());
     if (stat != UMOUNT_STAT_SUCCESS) {
         LOG(INFO) << "umount timeout, last resort, kill all and try";
         if (DUMP_ON_UMOUNT_FAILURE) DumpUmountDebuggingInfo(false);
         KillAllProcesses();
         // even if it succeeds, still it is timeout and do not run fsck with all processes killed
-        UmountPartitions(0);
+        UmountPartitions(0ms);
         if (DUMP_ON_UMOUNT_FAILURE) DumpUmountDebuggingInfo(true);
     }
 
@@ -321,26 +360,27 @@
         abort();
     }
 
-    constexpr unsigned int shutdownTimeoutDefault = 6;
-    unsigned int shutdownTimeout = shutdownTimeoutDefault;
-    if (SHUTDOWN_ZERO_TIMEOUT) {  // eng build
-        shutdownTimeout = 0;
-    } else {
-        shutdownTimeout =
-            android::base::GetUintProperty("ro.build.shutdown_timeout", shutdownTimeoutDefault);
+    auto shutdown_timeout = 0s;
+    if (!SHUTDOWN_ZERO_TIMEOUT) {
+        constexpr unsigned int shutdown_timeout_default = 6;
+        auto shutdown_timeout_property =
+            android::base::GetUintProperty("ro.build.shutdown_timeout", shutdown_timeout_default);
+        shutdown_timeout = std::chrono::seconds(shutdown_timeout_property);
     }
-    LOG(INFO) << "Shutdown timeout: " << shutdownTimeout;
+    LOG(INFO) << "Shutdown timeout: " << shutdown_timeout.count() << " seconds";
 
     // keep debugging tools until non critical ones are all gone.
     const std::set<std::string> kill_after_apps{"tombstoned", "logd", "adbd"};
     // watchdogd is a vendor specific component but should be alive to complete shutdown safely.
-    const std::set<std::string> to_starts{"watchdogd", "vold", "ueventd"};
+    const std::set<std::string> to_starts{"watchdogd"};
     ServiceManager::GetInstance().ForEachService([&kill_after_apps, &to_starts](Service* s) {
         if (kill_after_apps.count(s->name())) {
             s->SetShutdownCritical();
         } else if (to_starts.count(s->name())) {
             s->Start();
             s->SetShutdownCritical();
+        } else if (s->IsShutdownCritical()) {
+            s->Start();  // start shutdown critical service if not started
         }
     });
 
@@ -354,7 +394,7 @@
 
     // optional shutdown step
     // 1. terminate all services except shutdown critical ones. wait for delay to finish
-    if (shutdownTimeout > 0) {
+    if (shutdown_timeout > 0s) {
         LOG(INFO) << "terminating init services";
 
         // Ask all services to terminate except shutdown critical ones.
@@ -363,9 +403,9 @@
         });
 
         int service_count = 0;
-        // Up to half as long as shutdownTimeout or 3 seconds, whichever is lower.
-        unsigned int terminationWaitTimeout = std::min<unsigned int>((shutdownTimeout + 1) / 2, 3);
-        while (t.duration_s() < terminationWaitTimeout) {
+        // Up to half as long as shutdown_timeout or 3 seconds, whichever is lower.
+        auto termination_wait_timeout = std::min((shutdown_timeout + 1s) / 2, 3s);
+        while (t.duration() < termination_wait_timeout) {
             ServiceManager::GetInstance().ReapAnyOutstandingChildren();
 
             service_count = 0;
@@ -413,7 +453,7 @@
     });
     // 4. sync, try umount, and optionally run fsck for user shutdown
     sync();
-    UmountStat stat = TryUmountAndFsck(runFsck, shutdownTimeout * 1000 - t.duration_ms());
+    UmountStat stat = TryUmountAndFsck(runFsck, shutdown_timeout - t.duration());
     // Follow what linux shutdown is doing: one more sync with little bit delay
     sync();
     std::this_thread::sleep_for(100ms);
@@ -460,6 +500,9 @@
         }
     } else if (command == "thermal-shutdown") {  // no additional parameter allowed
         cmd = ANDROID_RB_THERMOFF;
+        // Do not queue "shutdown" trigger since we want to shutdown immediately
+        DoReboot(cmd, command, reboot_target, run_fsck);
+        return true;
     } else {
         command_invalid = true;
     }
@@ -468,7 +511,26 @@
         return false;
     }
 
-    DoReboot(cmd, command, reboot_target, run_fsck);
+    LOG(INFO) << "Clear action queue and start shutdown trigger";
+    ActionManager::GetInstance().ClearQueue();
+    // Queue shutdown trigger first
+    ActionManager::GetInstance().QueueEventTrigger("shutdown");
+    // Queue built-in shutdown_done
+    auto shutdown_handler = [cmd, command, reboot_target,
+                             run_fsck](const std::vector<std::string>&) {
+        DoReboot(cmd, command, reboot_target, run_fsck);
+        return 0;
+    };
+    ActionManager::GetInstance().QueueBuiltinAction(shutdown_handler, "shutdown_done");
+
+    // Skip wait for prop if it is in progress
+    ResetWaitForProp();
+
+    // Skip wait for exec if it is in progress
+    if (ServiceManager::GetInstance().IsWaitingForExec()) {
+        ServiceManager::GetInstance().ClearExecWait();
+    }
+
     return true;
 }
 
diff --git a/init/service.cpp b/init/service.cpp
index f9a452b..7a657c8 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -34,6 +34,7 @@
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
 #include <android-base/properties.h>
+#include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <processgroup/processgroup.h>
@@ -47,6 +48,7 @@
 using android::base::boot_clock;
 using android::base::GetProperty;
 using android::base::Join;
+using android::base::make_scope_guard;
 using android::base::ParseInt;
 using android::base::StartsWith;
 using android::base::StringPrintf;
@@ -235,8 +237,15 @@
 void Service::SetProcessAttributes() {
     // Keep capabilites on uid change.
     if (capabilities_.any() && uid_) {
-        if (prctl(PR_SET_SECUREBITS, SECBIT_KEEP_CAPS | SECBIT_KEEP_CAPS_LOCKED) != 0) {
-            PLOG(FATAL) << "prtcl(PR_SET_KEEPCAPS) failed for " << name_;
+        // If Android is running in a container, some securebits might already
+        // be locked, so don't change those.
+        int64_t securebits = prctl(PR_GET_SECUREBITS);
+        if (securebits == -1) {
+            PLOG(FATAL) << "prctl(PR_GET_SECUREBITS) failed for " << name_;
+        }
+        securebits |= SECBIT_KEEP_CAPS | SECBIT_KEEP_CAPS_LOCKED;
+        if (prctl(PR_SET_SECUREBITS, securebits) != 0) {
+            PLOG(FATAL) << "prctl(PR_SET_SECUREBITS) failed for " << name_;
         }
     }
 
@@ -492,6 +501,14 @@
     return true;
 }
 
+bool Service::ParseShutdown(const std::vector<std::string>& args, std::string* err) {
+    if (args[1] == "critical") {
+        flags_ |= SVC_SHUTDOWN_CRITICAL;
+        return true;
+    }
+    return false;
+}
+
 template <typename T>
 bool Service::AddDescriptor(const std::vector<std::string>& args, std::string* err) {
     int perm = args.size() > 3 ? std::strtoul(args[3].c_str(), 0, 8) : -1;
@@ -595,6 +612,7 @@
         {"namespace",   {1,     2,    &Service::ParseNamespace}},
         {"seclabel",    {1,     1,    &Service::ParseSeclabel}},
         {"setenv",      {2,     2,    &Service::ParseSetenv}},
+        {"shutdown",    {1,     1,    &Service::ParseShutdown}},
         {"socket",      {3,     6,    &Service::ParseSocket}},
         {"file",        {2,     2,    &Service::ParseFile}},
         {"user",        {1,     1,    &Service::ParseUser}},
@@ -615,10 +633,10 @@
     return (this->*parser)(args, err);
 }
 
-bool Service::ExecStart(std::unique_ptr<Timer>* exec_waiter) {
+bool Service::ExecStart(std::unique_ptr<android::base::Timer>* exec_waiter) {
     flags_ |= SVC_EXEC | SVC_ONESHOT;
 
-    exec_waiter->reset(new Timer);
+    exec_waiter->reset(new android::base::Timer);
 
     if (!Start()) {
         exec_waiter->reset();
@@ -1081,14 +1099,24 @@
 }
 
 bool ServiceManager::ReapOneProcess() {
-    int status;
-    pid_t pid = TEMP_FAILURE_RETRY(waitpid(-1, &status, WNOHANG));
-    if (pid == 0) {
+    siginfo_t siginfo = {};
+    // This returns a zombie pid or informs us that there are no zombies left to be reaped.
+    // It does NOT reap the pid; that is done below.
+    if (TEMP_FAILURE_RETRY(waitid(P_ALL, 0, &siginfo, WEXITED | WNOHANG | WNOWAIT)) != 0) {
+        PLOG(ERROR) << "waitid failed";
         return false;
-    } else if (pid == -1) {
-        PLOG(ERROR) << "waitpid failed";
-        return false;
-    } else if (PropertyChildReap(pid)) {
+    }
+
+    auto pid = siginfo.si_pid;
+    if (pid == 0) return false;
+
+    // At this point we know we have a zombie pid, so we use this scopeguard to reap the pid
+    // whenever the function returns from this point forward.
+    // We do NOT want to reap the zombie earlier as in Service::Reap(), we kill(-pid, ...) and we
+    // want the pid to remain valid throughout that (and potentially future) usages.
+    auto reaper = make_scope_guard([pid] { TEMP_FAILURE_RETRY(waitpid(pid, nullptr, WNOHANG)); });
+
+    if (PropertyChildReap(pid)) {
         return true;
     }
 
@@ -1099,20 +1127,18 @@
     if (svc) {
         name = StringPrintf("Service '%s' (pid %d)", svc->name().c_str(), pid);
         if (svc->flags() & SVC_EXEC) {
-            wait_string = StringPrintf(" waiting took %f seconds", exec_waiter_->duration_s());
+            wait_string = StringPrintf(" waiting took %f seconds",
+                                       exec_waiter_->duration().count() / 1000.0f);
         }
     } else {
         name = StringPrintf("Untracked pid %d", pid);
     }
 
+    auto status = siginfo.si_status;
     if (WIFEXITED(status)) {
         LOG(INFO) << name << " exited with status " << WEXITSTATUS(status) << wait_string;
     } else if (WIFSIGNALED(status)) {
         LOG(INFO) << name << " killed by signal " << WTERMSIG(status) << wait_string;
-    } else if (WIFSTOPPED(status)) {
-        LOG(INFO) << name << " stopped by signal " << WSTOPSIG(status) << wait_string;
-    } else {
-        LOG(INFO) << name << " state changed" << wait_string;
     }
 
     if (!svc) {
@@ -1136,6 +1162,15 @@
     }
 }
 
+void ServiceManager::ClearExecWait() {
+    // Clear EXEC flag if there is one pending
+    // And clear the wait flag
+    for (const auto& s : services_) {
+        s->UnSetExec();
+    }
+    exec_waiter_.reset();
+}
+
 bool ServiceParser::ParseSection(std::vector<std::string>&& args, const std::string& filename,
                                  int line, std::string* err) {
     if (args.size() < 3) {
diff --git a/init/service.h b/init/service.h
index 3c7dc74..f682abd 100644
--- a/init/service.h
+++ b/init/service.h
@@ -32,7 +32,6 @@
 #include "descriptors.h"
 #include "init_parser.h"
 #include "keyword_map.h"
-#include "util.h"
 
 #define SVC_DISABLED 0x001        // do not autostart with class
 #define SVC_ONESHOT 0x002         // do not restart on exit
@@ -76,7 +75,7 @@
 
     bool IsRunning() { return (flags_ & SVC_RUNNING) != 0; }
     bool ParseLine(const std::vector<std::string>& args, std::string* err);
-    bool ExecStart(std::unique_ptr<Timer>* exec_waiter);
+    bool ExecStart(std::unique_ptr<android::base::Timer>* exec_waiter);
     bool Start();
     bool StartIfNotDisabled();
     bool Enable();
@@ -89,6 +88,7 @@
     void DumpState() const;
     void SetShutdownCritical() { flags_ |= SVC_SHUTDOWN_CRITICAL; }
     bool IsShutdownCritical() const { return (flags_ & SVC_SHUTDOWN_CRITICAL) != 0; }
+    void UnSetExec() { flags_ &= ~SVC_EXEC; }
 
     const std::string& name() const { return name_; }
     const std::set<std::string>& classnames() const { return classnames_; }
@@ -137,6 +137,7 @@
     bool ParseNamespace(const std::vector<std::string>& args, std::string* err);
     bool ParseSeclabel(const std::vector<std::string>& args, std::string* err);
     bool ParseSetenv(const std::vector<std::string>& args, std::string* err);
+    bool ParseShutdown(const std::vector<std::string>& args, std::string* err);
     bool ParseSocket(const std::vector<std::string>& args, std::string* err);
     bool ParseFile(const std::vector<std::string>& args, std::string* err);
     bool ParseUser(const std::vector<std::string>& args, std::string* err);
@@ -186,7 +187,7 @@
 };
 
 class ServiceManager {
-public:
+  public:
     static ServiceManager& GetInstance();
 
     // Exposed for testing
@@ -208,14 +209,15 @@
     void ReapAnyOutstandingChildren();
     void RemoveService(const Service& svc);
     void DumpState() const;
+    void ClearExecWait();
 
-private:
+  private:
     // Cleans up a child process that exited.
     // Returns true iff a children was cleaned up.
     bool ReapOneProcess();
 
     static int exec_count_; // Every service needs a unique name.
-    std::unique_ptr<Timer> exec_waiter_;
+    std::unique_ptr<android::base::Timer> exec_waiter_;
 
     std::vector<std::unique_ptr<Service>> services_;
 };
diff --git a/init/ueventd.cpp b/init/ueventd.cpp
index 81a0572..c0eae1e 100644
--- a/init/ueventd.cpp
+++ b/init/ueventd.cpp
@@ -27,6 +27,7 @@
 #include <set>
 #include <thread>
 
+#include <android-base/chrono_utils.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <selinux/android.h>
@@ -198,7 +199,7 @@
 }
 
 void ColdBoot::Run() {
-    Timer cold_boot_timer;
+    android::base::Timer cold_boot_timer;
 
     RegenerateUevents();
 
@@ -209,7 +210,7 @@
     WaitForSubProcesses();
 
     close(open(COLDBOOT_DONE, O_WRONLY | O_CREAT | O_CLOEXEC, 0000));
-    LOG(INFO) << "Coldboot took " << cold_boot_timer;
+    LOG(INFO) << "Coldboot took " << cold_boot_timer.duration().count() / 1000.0f << " seconds";
 }
 
 DeviceHandler CreateDeviceHandler() {
@@ -268,6 +269,13 @@
         cold_boot.Run();
     }
 
+    // We use waitpid() in ColdBoot, so we can't ignore SIGCHLD until now.
+    signal(SIGCHLD, SIG_IGN);
+    // Reap and pending children that exited between the last call to waitpid() and setting SIG_IGN
+    // for SIGCHLD above.
+    while (waitpid(-1, nullptr, WNOHANG) > 0) {
+    }
+
     uevent_listener.Poll([&device_handler](const Uevent& uevent) {
         HandleFirmwareEvent(uevent);
         device_handler.HandleDeviceEvent(uevent);
diff --git a/init/ueventd_test.cpp b/init/ueventd_test.cpp
new file mode 100644
index 0000000..86d7055
--- /dev/null
+++ b/init/ueventd_test.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2017 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 <linux/futex.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <string>
+#include <thread>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/scopeguard.h>
+#include <android-base/test_utils.h>
+#include <gtest/gtest.h>
+#include <selinux/selinux.h>
+
+using namespace std::string_literals;
+
+template <typename T, typename F>
+void WriteFromMultipleThreads(std::vector<std::pair<std::string, T>>& files_and_parameters,
+                              F function) {
+    auto num_threads = files_and_parameters.size();
+    pthread_barrier_t barrier;
+    pthread_barrier_init(&barrier, nullptr, num_threads);
+    auto barrier_destroy =
+        android::base::make_scope_guard([&barrier]() { pthread_barrier_destroy(&barrier); });
+
+    auto make_thread_function = [&function, &barrier](const auto& file, const auto& parameter) {
+        return [&]() {
+            function(parameter);
+            pthread_barrier_wait(&barrier);
+            android::base::WriteStringToFile("<empty>", file);
+        };
+    };
+
+    std::vector<std::thread> threads;
+    // TODO(b/63712782): Structured bindings + templated containers are broken in clang :(
+    // for (const auto& [file, parameter] : files_and_parameters) {
+    for (const auto& pair : files_and_parameters) {
+        const auto& file = pair.first;
+        const auto& parameter = pair.second;
+        threads.emplace_back(std::thread(make_thread_function(file, parameter)));
+    }
+
+    for (auto& thread : threads) {
+        thread.join();
+    }
+}
+
+TEST(ueventd, setegid_IsPerThread) {
+    if (getuid() != 0) return;
+
+    TemporaryDir dir;
+
+    gid_t gid = 0;
+    std::vector<std::pair<std::string, gid_t>> files_and_gids;
+    std::generate_n(std::back_inserter(files_and_gids), 100, [&gid, &dir]() {
+        gid++;
+        return std::pair(dir.path + "/gid_"s + std::to_string(gid), gid);
+    });
+
+    WriteFromMultipleThreads(files_and_gids, [](gid_t gid) { EXPECT_EQ(0, setegid(gid)); });
+
+    for (const auto& [file, expected_gid] : files_and_gids) {
+        struct stat info;
+        EXPECT_EQ(0, stat(file.c_str(), &info));
+        EXPECT_EQ(expected_gid, info.st_gid);
+    }
+}
+
+TEST(ueventd, setfscreatecon_IsPerThread) {
+    if (getuid() != 0) return;
+
+    const char* const contexts[] = {
+        "u:object_r:audio_device:s0",
+        "u:object_r:sensors_device:s0",
+        "u:object_r:video_device:s0"
+        "u:object_r:zero_device:s0",
+    };
+
+    TemporaryDir dir;
+    std::vector<std::pair<std::string, std::string>> files_and_contexts;
+    for (const char* context : contexts) {
+        files_and_contexts.emplace_back(dir.path + "/context_"s + context, context);
+    }
+
+    WriteFromMultipleThreads(files_and_contexts, [](const std::string& context) {
+        EXPECT_EQ(0, setfscreatecon(context.c_str()));
+    });
+
+    for (const auto& [file, expected_context] : files_and_contexts) {
+        char* file_context;
+        EXPECT_GT(getfilecon(file.c_str(), &file_context), 0);
+        EXPECT_EQ(expected_context, file_context);
+        freecon(file_context);
+    }
+}
diff --git a/init/util.cpp b/init/util.cpp
index 4b1894f..2792794 100644
--- a/init/util.cpp
+++ b/init/util.cpp
@@ -370,14 +370,10 @@
 
 void panic() {
     LOG(ERROR) << "panic: rebooting to bootloader";
+    // Do not queue "shutdown" trigger since we want to shutdown immediately
     DoReboot(ANDROID_RB_RESTART2, "reboot", "bootloader", false);
 }
 
-std::ostream& operator<<(std::ostream& os, const Timer& t) {
-    os << t.duration_s() << " seconds";
-    return os;
-}
-
 // Reads the content of device tree file under kAndroidDtDir directory.
 // Returns true if the read is success, false otherwise.
 bool read_android_dt_file(const std::string& sub_path, std::string* dt_content) {
diff --git a/init/util.h b/init/util.h
index 346953f..452df2d 100644
--- a/init/util.h
+++ b/init/util.h
@@ -44,26 +44,6 @@
 bool ReadFile(const std::string& path, std::string* content, std::string* err);
 bool WriteFile(const std::string& path, const std::string& content, std::string* err);
 
-class Timer {
-  public:
-    Timer() : start_(boot_clock::now()) {}
-
-    double duration_s() const {
-        typedef std::chrono::duration<double> double_duration;
-        return std::chrono::duration_cast<double_duration>(boot_clock::now() - start_).count();
-    }
-
-    int64_t duration_ms() const {
-        return std::chrono::duration_cast<std::chrono::milliseconds>(boot_clock::now() - start_)
-            .count();
-    }
-
-  private:
-    android::base::boot_clock::time_point start_;
-};
-
-std::ostream& operator<<(std::ostream& os, const Timer& t);
-
 bool DecodeUid(const std::string& name, uid_t* uid, std::string* err);
 
 int mkdir_recursive(const std::string& pathname, mode_t mode, selabel_handle* sehandle);
diff --git a/libbacktrace/Android.bp b/libbacktrace/Android.bp
index a643a29..e02aaf2 100644
--- a/libbacktrace/Android.bp
+++ b/libbacktrace/Android.bp
@@ -161,6 +161,7 @@
     shared_libs = [
         "libbase",
         "libunwind",
+        "libziparchive",
     ],
 }
 
diff --git a/libcutils/sched_policy.cpp b/libcutils/sched_policy.cpp
index aeb881a..f733e90 100644
--- a/libcutils/sched_policy.cpp
+++ b/libcutils/sched_policy.cpp
@@ -28,13 +28,6 @@
 
 #define UNUSED __attribute__((__unused__))
 
-#ifndef SLOGE
-#define SLOGE ALOGE
-#endif
-#ifndef SLOGW
-#define SLOGW ALOGW
-#endif
-
 /* Re-map SP_DEFAULT to the system default policy, and leave other values unchanged.
  * Call this any place a SchedPolicy is used as an input parameter.
  * Returns the possibly re-mapped policy.
@@ -125,7 +118,6 @@
 
     In older releases, this was controlled by build-time configuration.
  */
-
 bool cpusets_enabled() {
     static bool enabled = (access("/dev/cpuset/tasks", F_OK) == 0);
 
@@ -137,12 +129,8 @@
     CONFIG_CGROUP_SCHEDTUNE that's in Android common Linux kernel and Linaro
     Stable Kernel (LSK), but not in mainline Linux as of v4.9.
 
-    With runtime check using the following function, build time
-    variables like ENABLE_SCHEDBOOST (used in Android.mk) or schedboost
-    (used in Android.bp) are not needed.
-
+    In older releases, this was controlled by build-time configuration.
  */
-
 bool schedboost_enabled() {
     static bool enabled = (access("/dev/stune/tasks", F_OK) == 0);
 
diff --git a/liblog/Android.bp b/liblog/Android.bp
index e74aa82..b98d18f 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -42,6 +42,24 @@
     "logd_writer.c",
 ]
 
+cc_library_headers {
+    name: "liblog_headers",
+    host_supported: true,
+    vendor_available: true,
+    export_include_dirs: ["include"],
+    target: {
+        windows: {
+            enabled: true,
+        },
+        linux_bionic: {
+            enabled: true,
+        },
+        vendor: {
+            export_include_dirs: ["include_vndk"],
+        },
+    },
+}
+
 // Shared and static library for host and device
 // ========================================================
 cc_library {
@@ -81,7 +99,8 @@
         },
     },
 
-    export_include_dirs: ["include"],
+    header_libs: ["liblog_headers"],
+    export_header_lib_headers: ["liblog_headers"],
 
     cflags: [
         "-Werror",
@@ -100,7 +119,7 @@
 }
 
 ndk_headers {
-    name: "liblog_headers",
+    name: "liblog_ndk_headers",
     from: "include/android",
     to: "android",
     srcs: ["include/android/log.h"],
diff --git a/liblog/include/log/log.h b/liblog/include/log/log.h
index 3a215e9..d01708d 100644
--- a/liblog/include/log/log.h
+++ b/liblog/include/log/log.h
@@ -161,7 +161,7 @@
 #endif
 
 #if __ANDROID_USE_LIBLOG_CLOCK_INTERFACE
-clockid_t android_log_clockid();
+clockid_t android_log_clockid(void);
 #endif
 
 #endif /* __linux__ */
@@ -185,7 +185,7 @@
  * May be used to clean up File descriptors after a Fork, the resources are
  * all O_CLOEXEC so wil self clean on exec().
  */
-void __android_log_close();
+void __android_log_close(void);
 #endif
 
 #ifndef __ANDROID_USE_LIBLOG_RATELIMIT_INTERFACE
diff --git a/liblog/include_vndk/log/log.h b/liblog/include_vndk/log/log.h
index 01623df..a79beec 100644
--- a/liblog/include_vndk/log/log.h
+++ b/liblog/include_vndk/log/log.h
@@ -9,6 +9,7 @@
 #include <log/log_radio.h>
 #include <log/log_read.h>
 #include <log/log_safetynet.h>
+#include <log/log_system.h>
 #include <log/log_time.h>
 
 /*
diff --git a/liblog/include_vndk/log/log_system.h b/liblog/include_vndk/log/log_system.h
new file mode 120000
index 0000000..d0d3904
--- /dev/null
+++ b/liblog/include_vndk/log/log_system.h
@@ -0,0 +1 @@
+../../include/log/log_system.h
\ No newline at end of file
diff --git a/libmemunreachable/Android.bp b/libmemunreachable/Android.bp
index cdac76b..826a576 100644
--- a/libmemunreachable/Android.bp
+++ b/libmemunreachable/Android.bp
@@ -26,6 +26,7 @@
     defaults: ["libmemunreachable_defaults"],
     srcs: [
         "Allocator.cpp",
+        "Binder.cpp",
         "HeapWalker.cpp",
         "LeakFolding.cpp",
         "LeakPipe.cpp",
@@ -84,3 +85,18 @@
         },
     },
 }
+
+cc_test {
+    name: "memunreachable_binder_test",
+    defaults: ["libmemunreachable_defaults"],
+    srcs: [
+        "tests/Binder_test.cpp",
+        "tests/MemUnreachable_test.cpp",
+    ],
+    shared_libs: [
+        "libbinder",
+        "libhwbinder",
+        "libmemunreachable",
+        "libutils",
+    ],
+}
diff --git a/libmemunreachable/Binder.cpp b/libmemunreachable/Binder.cpp
new file mode 100644
index 0000000..60512a3
--- /dev/null
+++ b/libmemunreachable/Binder.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 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 <sys/cdefs.h>
+#include <unistd.h>
+
+#include <functional>
+
+#include "Binder.h"
+#include "log.h"
+
+__BEGIN_DECLS
+
+// Weak undefined references to the symbols in libbinder and libhwbinder
+// so that libmemunreachable can call them in processes that have them
+// loaded without requiring libmemunreachable to have dependencies on them.
+ssize_t __attribute__((weak)) getBinderKernelReferences(size_t, uintptr_t*);
+ssize_t __attribute__((weak)) getHWBinderKernelReferences(size_t, uintptr_t*);
+
+__END_DECLS
+
+namespace android {
+
+static bool BinderReferencesToVector(allocator::vector<uintptr_t>& refs,
+                                     std::function<ssize_t(size_t, uintptr_t*)> fn) {
+  if (fn == nullptr) {
+    return true;
+  }
+
+  size_t size = refs.size();
+
+  do {
+    refs.resize(size);
+
+    ssize_t ret = fn(refs.size(), refs.data());
+    if (ret < 0) {
+      return false;
+    }
+
+    size = ret;
+  } while (size > refs.size());
+
+  refs.resize(size);
+  return true;
+}
+
+bool BinderReferences(allocator::vector<uintptr_t>& refs) {
+  refs.clear();
+
+  allocator::vector<uintptr_t> binder_refs{refs.get_allocator()};
+  if (BinderReferencesToVector(refs, getBinderKernelReferences)) {
+    refs.insert(refs.end(), binder_refs.begin(), binder_refs.end());
+  } else {
+    MEM_ALOGE("getBinderKernelReferences failed");
+  }
+
+  allocator::vector<uintptr_t> hwbinder_refs{refs.get_allocator()};
+  if (BinderReferencesToVector(hwbinder_refs, getHWBinderKernelReferences)) {
+    refs.insert(refs.end(), hwbinder_refs.begin(), hwbinder_refs.end());
+  } else {
+    MEM_ALOGE("getHWBinderKernelReferences failed");
+  }
+
+  return true;
+}
+
+}  // namespace android
diff --git a/libunwindstack/Log.h b/libmemunreachable/Binder.h
similarity index 65%
copy from libunwindstack/Log.h
copy to libmemunreachable/Binder.h
index 2d01aa8..bf4fd3e 100644
--- a/libunwindstack/Log.h
+++ b/libmemunreachable/Binder.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -14,12 +14,15 @@
  * limitations under the License.
  */
 
-#ifndef _LIBUNWINDSTACK_LOG_H
-#define _LIBUNWINDSTACK_LOG_H
+#ifndef LIBMEMUNREACHABLE_BINDER_H_
+#define LIBMEMUNREACHABLE_BINDER_H_
 
-#include <stdint.h>
+#include "Allocator.h"
 
-void log_to_stdout(bool enable);
-void log(uint8_t indent, const char* format, ...);
+namespace android {
 
-#endif  // _LIBUNWINDSTACK_LOG_H
+bool BinderReferences(allocator::vector<uintptr_t>& refs);
+
+}  // namespace android
+
+#endif  // LIBMEMUNREACHABLE_BINDER_H_
diff --git a/libmemunreachable/MemUnreachable.cpp b/libmemunreachable/MemUnreachable.cpp
index a1f74c3..5e062fd 100644
--- a/libmemunreachable/MemUnreachable.cpp
+++ b/libmemunreachable/MemUnreachable.cpp
@@ -28,6 +28,7 @@
 #include <backtrace.h>
 
 #include "Allocator.h"
+#include "Binder.h"
 #include "HeapWalker.h"
 #include "Leak.h"
 #include "LeakFolding.h"
@@ -53,7 +54,8 @@
   MemUnreachable(pid_t pid, Allocator<void> allocator)
       : pid_(pid), allocator_(allocator), heap_walker_(allocator_) {}
   bool CollectAllocations(const allocator::vector<ThreadInfo>& threads,
-                          const allocator::vector<Mapping>& mappings);
+                          const allocator::vector<Mapping>& mappings,
+                          const allocator::vector<uintptr_t>& refs);
   bool GetUnreachableMemory(allocator::vector<Leak>& leaks, size_t limit, size_t* num_leaks,
                             size_t* leak_bytes);
   size_t Allocations() { return heap_walker_.Allocations(); }
@@ -82,7 +84,8 @@
 }
 
 bool MemUnreachable::CollectAllocations(const allocator::vector<ThreadInfo>& threads,
-                                        const allocator::vector<Mapping>& mappings) {
+                                        const allocator::vector<Mapping>& mappings,
+                                        const allocator::vector<uintptr_t>& refs) {
   MEM_ALOGI("searching process %d for allocations", pid_);
   allocator::vector<Mapping> heap_mappings{mappings};
   allocator::vector<Mapping> anon_mappings{mappings};
@@ -118,6 +121,8 @@
     heap_walker_.Root(thread_it->regs);
   }
 
+  heap_walker_.Root(refs);
+
   MEM_ALOGI("searching done");
 
   return true;
@@ -282,6 +287,7 @@
     ThreadCapture thread_capture(parent_pid, heap);
     allocator::vector<ThreadInfo> thread_info(heap);
     allocator::vector<Mapping> mappings(heap);
+    allocator::vector<uintptr_t> refs(heap);
 
     // ptrace all the threads
     if (!thread_capture.CaptureThreads()) {
@@ -301,6 +307,11 @@
       return 1;
     }
 
+    if (!BinderReferences(refs)) {
+      continue_parent_sem.Post();
+      return 1;
+    }
+
     // malloc must be enabled to call fork, at_fork handlers take the same
     // locks as ScopedDisableMalloc.  All threads are paused in ptrace, so
     // memory state is still consistent.  Unfreeze the original thread so it
@@ -326,7 +337,7 @@
 
       MemUnreachable unreachable{parent_pid, heap};
 
-      if (!unreachable.CollectAllocations(thread_info, mappings)) {
+      if (!unreachable.CollectAllocations(thread_info, mappings, refs)) {
         _exit(2);
       }
       size_t num_allocations = unreachable.Allocations();
diff --git a/libmemunreachable/ScopedSignalHandler.h b/libmemunreachable/ScopedSignalHandler.h
index f62f368..ff53fad 100644
--- a/libmemunreachable/ScopedSignalHandler.h
+++ b/libmemunreachable/ScopedSignalHandler.h
@@ -37,7 +37,7 @@
 
   template <class F>
   void install(int signal, F&& f) {
-    if (signal != -1) MEM_LOG_ALWAYS_FATAL("ScopedSignalHandler already installed");
+    if (signal_ != -1) MEM_LOG_ALWAYS_FATAL("ScopedSignalHandler already installed");
 
     handler_ = SignalFn(std::allocator_arg, allocator_,
                         [=](int signal, siginfo_t* si, void* uctx) { f(*this, signal, si, uctx); });
diff --git a/libmemunreachable/tests/AndroidTest.xml b/libmemunreachable/tests/AndroidTest.xml
new file mode 100644
index 0000000..604c0ec
--- /dev/null
+++ b/libmemunreachable/tests/AndroidTest.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+<configuration description="Config for memunreachable_test">
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="memunreachable_test->/data/local/tmp/memunreachable_test" />
+    </target_preparer>
+    <option name="test-suite-tag" value="apct" />
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="memunreachable_test" />
+    </test>
+</configuration>
diff --git a/libmemunreachable/tests/Binder_test.cpp b/libmemunreachable/tests/Binder_test.cpp
new file mode 100644
index 0000000..6e85d5a
--- /dev/null
+++ b/libmemunreachable/tests/Binder_test.cpp
@@ -0,0 +1,156 @@
+/*
+ * 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.
+ */
+
+#include <signal.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <binder/Binder.h>
+#include <binder/IBinder.h>
+#include <binder/IServiceManager.h>
+#include <binder/Parcel.h>
+#include <binder/ProcessState.h>
+
+#include <gtest/gtest.h>
+
+#include "Allocator.h"
+#include "Binder.h"
+
+namespace android {
+
+static const String16 service_name("test.libmemunreachable_binder");
+
+class BinderService : public BBinder {
+ public:
+  BinderService() = default;
+  virtual ~BinderService() = default;
+
+  virtual status_t onTransact(uint32_t /*code*/, const Parcel& data, Parcel* reply,
+                              uint32_t /*flags*/ = 0) {
+    reply->writeStrongBinder(ref);
+    ref = data.readStrongBinder();
+    return 0;
+  }
+
+ private:
+  sp<IBinder> ref;
+};
+
+class BinderObject : public BBinder {
+ public:
+  BinderObject() = default;
+  ~BinderObject() = default;
+};
+
+class ServiceProcess {
+ public:
+  ServiceProcess() : child_(0) {}
+  ~ServiceProcess() { Stop(); }
+
+  bool Run() {
+    pid_t ret = fork();
+    if (ret < 0) {
+      return false;
+    } else if (ret == 0) {
+      // child
+      _exit(Service());
+    } else {
+      // parent
+      child_ = ret;
+      return true;
+    }
+  }
+
+  bool Stop() {
+    if (child_ > 0) {
+      if (kill(child_, SIGTERM)) {
+        return false;
+      }
+      int status = 0;
+      if (TEMP_FAILURE_RETRY(waitpid(child_, &status, 0)) != child_) {
+        return false;
+      }
+      child_ = 0;
+      return WIFEXITED(status) && WEXITSTATUS(status) == 0;
+    }
+
+    return true;
+  }
+
+  int Service() {
+    sp<ProcessState> proc{ProcessState::self()};
+    sp<IServiceManager> sm = defaultServiceManager();
+    if (sm == nullptr) {
+      fprintf(stderr, "Failed to get service manager\n");
+      return 1;
+    }
+    if (sm->addService(service_name, new BinderService()) != OK) {
+      fprintf(stderr, "Failed to add test service\n");
+      return 1;
+    }
+    proc->startThreadPool();
+    pause();
+    return 0;
+  }
+
+ private:
+  pid_t child_;
+};
+
+class BinderTest : public ::testing::Test {
+ protected:
+  ServiceProcess service_process_;
+};
+
+TEST_F(BinderTest, binder) {
+  ServiceProcess service_process;
+  ASSERT_TRUE(service_process.Run());
+
+  sp<IServiceManager> sm = defaultServiceManager();
+  ASSERT_TRUE(sm != nullptr);
+
+  // A small sleep allows the service to start, which
+  // prevents a longer sleep in getService.
+  usleep(100000);
+
+  sp<IBinder> service = sm->getService(service_name);
+  ASSERT_TRUE(service != nullptr);
+
+  sp<IBinder> binder{new BinderObject()};
+
+  Parcel send;
+  Parcel reply;
+
+  send.writeStrongBinder(binder);
+  status_t rv = service->transact(0, send, &reply);
+  ASSERT_EQ(static_cast<status_t>(OK), rv);
+
+  Heap heap;
+  allocator::vector<uintptr_t> refs{heap};
+
+  ASSERT_TRUE(BinderReferences(refs));
+
+  bool found_ref = false;
+  for (auto ref : refs) {
+    if (ref == reinterpret_cast<uintptr_t>(binder.get())) {
+      found_ref = true;
+    }
+  }
+
+  ASSERT_TRUE(found_ref);
+}
+
+}  // namespace android
diff --git a/libmetricslogger/Android.bp b/libmetricslogger/Android.bp
index 38859d1..26a041a 100644
--- a/libmetricslogger/Android.bp
+++ b/libmetricslogger/Android.bp
@@ -31,7 +31,6 @@
 // -----------------------------------------------------------------------------
 cc_library_shared {
     name: "libmetricslogger",
-    vendor_available: true,
     srcs: metricslogger_lib_src_files,
     defaults: ["metricslogger_defaults"],
 }
diff --git a/libnativebridge/Android.bp b/libnativebridge/Android.bp
index 377b7dd..1cea4cd 100644
--- a/libnativebridge/Android.bp
+++ b/libnativebridge/Android.bp
@@ -1,4 +1,11 @@
 
+cc_library_headers {
+    name: "libnativebridge-dummy-headers",
+
+    host_supported: true,
+    export_include_dirs=["include"],
+}
+
 cc_library {
     name: "libnativebridge",
 
@@ -7,6 +14,8 @@
     shared_libs: ["liblog"],
     clang: true,
 
+    export_include_dirs=["include"],
+
     cflags: [
         "-Werror",
         "-Wall",
@@ -23,4 +32,4 @@
     },
 }
 
-subdirs = ["tests"]
\ No newline at end of file
+subdirs = ["tests"]
diff --git a/include/nativebridge/native_bridge.h b/libnativebridge/include/nativebridge/native_bridge.h
similarity index 100%
rename from include/nativebridge/native_bridge.h
rename to libnativebridge/include/nativebridge/native_bridge.h
diff --git a/libnativebridge/tests/Android.bp b/libnativebridge/tests/Android.bp
index efd3978..e31dae0 100644
--- a/libnativebridge/tests/Android.bp
+++ b/libnativebridge/tests/Android.bp
@@ -23,6 +23,7 @@
         "-Wextra",
         "-Werror",
     ],
+    header_libs: ["libnativebridge-dummy-headers"],
     cppflags: ["-fvisibility=protected"],
     target: {
         android: {
diff --git a/libprocessgroup/processgroup.cpp b/libprocessgroup/processgroup.cpp
index f5d4e1c..9b8248e 100644
--- a/libprocessgroup/processgroup.cpp
+++ b/libprocessgroup/processgroup.cpp
@@ -43,9 +43,6 @@
 
 using namespace std::chrono_literals;
 
-// Uncomment line below use memory cgroups for keeping track of (forked) PIDs
-// #define USE_MEMCG 1
-
 #define MEM_CGROUP_PATH "/dev/memcg/apps"
 #define MEM_CGROUP_TASKS "/dev/memcg/apps/tasks"
 #define ACCT_CGROUP_PATH "/acct"
@@ -91,7 +88,6 @@
 };
 
 static const char* getCgroupRootPath() {
-#ifdef USE_MEMCG
     static const char* cgroup_root_path = NULL;
     std::call_once(init_path_flag, [&]() {
             // Check if mem cgroup is mounted, only then check for write-access to avoid
@@ -100,9 +96,6 @@
                     ACCT_CGROUP_PATH : MEM_CGROUP_PATH;
             });
     return cgroup_root_path;
-#else
-    return ACCT_CGROUP_PATH;
-#endif
 }
 
 static int convertUidToPath(char *path, size_t size, uid_t uid)
diff --git a/libsysutils/src/FrameworkListener.cpp b/libsysutils/src/FrameworkListener.cpp
index 6f76e76..87e2684 100644
--- a/libsysutils/src/FrameworkListener.cpp
+++ b/libsysutils/src/FrameworkListener.cpp
@@ -211,7 +211,6 @@
     return;
 
 overflow:
-    LOG_EVENT_INT(78001, cli->getUid());
     cli->sendMsg(500, "Command too long", false);
     goto out;
 }
diff --git a/libsysutils/src/NetlinkListener.cpp b/libsysutils/src/NetlinkListener.cpp
index 896dad3..aad0394 100644
--- a/libsysutils/src/NetlinkListener.cpp
+++ b/libsysutils/src/NetlinkListener.cpp
@@ -57,8 +57,6 @@
     count = TEMP_FAILURE_RETRY(uevent_kernel_recv(socket,
             mBuffer, sizeof(mBuffer), require_group, &uid));
     if (count < 0) {
-        if (uid > 0)
-            LOG_EVENT_INT(65537, uid);
         SLOGE("recvmsg failed (%s)", strerror(errno));
         return false;
     }
diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index d7e949b..94f0f8e 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -31,19 +31,20 @@
         },
     },
 
-    multilib: {
-        lib32: {
-            suffix: "32",
+    arch: {
+        mips: {
+            enabled: false,
         },
-        lib64: {
-            suffix: "64",
+        mips64: {
+            enabled: false,
         },
     },
 }
 
-cc_defaults {
-    name: "libunwindstack_common",
+cc_library {
+    name: "libunwindstack",
     defaults: ["libunwindstack_flags"],
+    export_include_dirs: ["include"],
 
     srcs: [
         "ArmExidx.cpp",
@@ -57,40 +58,34 @@
         "ElfInterface.cpp",
         "ElfInterfaceArm.cpp",
         "Log.cpp",
-        "Regs.cpp",
         "MapInfo.cpp",
         "Maps.cpp",
         "Memory.cpp",
+        "Regs.cpp",
         "Symbols.cpp",
     ],
 
+    arch: {
+        x86: {
+            srcs: ["AsmGetRegsX86.S"],
+        },
+        x86_64: {
+            srcs: ["AsmGetRegsX86_64.S"],
+        },
+    },
+
     shared_libs: [
         "libbase",
         "liblog",
-    ],
-}
-
-cc_library {
-    name: "libunwindstack",
-    defaults: ["libunwindstack_common"],
-}
-
-cc_library {
-    name: "libunwindstack_debug",
-    defaults: ["libunwindstack_common"],
-
-    cflags: [
-        "-UNDEBUG",
-        "-O0",
-        "-g",
+        "liblzma",
     ],
 }
 
 //-------------------------------------------------------------------------
 // Unit Tests
 //-------------------------------------------------------------------------
-cc_defaults {
-    name: "libunwindstack_test_common",
+cc_test {
+    name: "libunwindstack_test",
     defaults: ["libunwindstack_flags"],
 
     srcs: [
@@ -108,16 +103,21 @@
         "tests/ElfInterfaceArmTest.cpp",
         "tests/ElfInterfaceTest.cpp",
         "tests/ElfTest.cpp",
+        "tests/ElfTestUtils.cpp",
         "tests/LogFake.cpp",
-        "tests/MapInfoTest.cpp",
+        "tests/MapInfoCreateMemoryTest.cpp",
+        "tests/MapInfoGetElfTest.cpp",
         "tests/MapsTest.cpp",
+        "tests/MemoryBufferTest.cpp",
         "tests/MemoryFake.cpp",
         "tests/MemoryFileTest.cpp",
         "tests/MemoryLocalTest.cpp",
         "tests/MemoryRangeTest.cpp",
         "tests/MemoryRemoteTest.cpp",
+        "tests/MemoryTest.cpp",
         "tests/RegsTest.cpp",
         "tests/SymbolsTest.cpp",
+        "tests/UnwindTest.cpp",
     ],
 
     cflags: [
@@ -128,6 +128,8 @@
     shared_libs: [
         "libbase",
         "liblog",
+        "liblzma",
+        "libunwindstack",
     ],
 
     static_libs: [
@@ -141,52 +143,69 @@
             ],
         },
     },
-}
 
-// These unit tests run against the shared library.
-cc_test {
-    name: "libunwindstack_test",
-    defaults: ["libunwindstack_test_common"],
-
-    shared_libs: [
-        "libunwindstack",
-    ],
-}
-
-// These unit tests run against the static debug library.
-cc_test {
-    name: "libunwindstack_test_debug",
-    defaults: ["libunwindstack_test_common"],
-
-    static_libs: [
-        "libunwindstack_debug",
+    data: [
+        "tests/files/elf32.xz",
+        "tests/files/elf64.xz",
     ],
 }
 
 //-------------------------------------------------------------------------
-// Utility Executables
+// Tools
 //-------------------------------------------------------------------------
 cc_defaults {
-    name: "libunwindstack_executables",
+    name: "libunwindstack_tools",
     defaults: ["libunwindstack_flags"],
 
     shared_libs: [
         "libunwindstack",
         "libbase",
+        "liblzma",
+    ],
+}
+
+cc_binary {
+    name: "unwind",
+    defaults: ["libunwindstack_tools"],
+
+    srcs: [
+        "tools/unwind.cpp",
     ],
 
-    static_libs: [
-        "liblog",
-    ],
-
-    compile_multilib: "both",
+    target: {
+        linux: {
+            host_ldlibs: [
+                "-lrt",
+            ],
+        },
+    },
 }
 
 cc_binary {
     name: "unwind_info",
-    defaults: ["libunwindstack_executables"],
+    defaults: ["libunwindstack_tools"],
 
     srcs: [
-        "unwind_info.cpp",
+        "tools/unwind_info.cpp",
+    ],
+}
+
+cc_binary {
+    name: "unwind_symbols",
+    defaults: ["libunwindstack_tools"],
+
+    srcs: [
+        "tools/unwind_symbols.cpp",
+    ],
+}
+
+// Generates the elf data for use in the tests for .gnu_debugdata frames.
+// Once these files are generated, use the xz command to compress the data.
+cc_binary_host {
+    name: "gen_gnudebugdata",
+    defaults: ["libunwindstack_flags"],
+
+    srcs: [
+        "tests/GenGnuDebugdata.cpp",
     ],
 }
diff --git a/libunwindstack/ArmExidx.cpp b/libunwindstack/ArmExidx.cpp
index 12adf57..fed3e0e 100644
--- a/libunwindstack/ArmExidx.cpp
+++ b/libunwindstack/ArmExidx.cpp
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-#include <assert.h>
 #include <stdint.h>
 
 #include <deque>
@@ -22,11 +21,15 @@
 
 #include <android-base/stringprintf.h>
 
+#include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
 #include "ArmExidx.h"
-#include "Log.h"
+#include "Check.h"
 #include "Machine.h"
-#include "Memory.h"
-#include "Regs.h"
+
+namespace unwindstack {
 
 void ArmExidx::LogRawData() {
   std::string log_str("Raw Data:");
@@ -173,7 +176,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_10_00(uint8_t byte) {
-  assert((byte >> 4) == 0x8);
+  CHECK((byte >> 4) == 0x8);
 
   uint16_t registers = (byte & 0xf) << 8;
   if (!GetByte(&byte)) {
@@ -232,7 +235,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_10_01(uint8_t byte) {
-  assert((byte >> 4) == 0x9);
+  CHECK((byte >> 4) == 0x9);
 
   uint8_t bits = byte & 0xf;
   if (bits == 13 || bits == 15) {
@@ -258,7 +261,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_10_10(uint8_t byte) {
-  assert((byte >> 4) == 0xa);
+  CHECK((byte >> 4) == 0xa);
 
   // 10100nnn: Pop r4-r[4+nnn]
   // 10101nnn: Pop r4-r[4+nnn], r14
@@ -419,7 +422,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_10_11_1nnn(uint8_t byte) {
-  assert((byte & ~0x07) == 0xb8);
+  CHECK((byte & ~0x07) == 0xb8);
 
   // 10111nnn: Pop VFP double-precision registers D[8]-D[8+nnn] by FSTMFDX
   if (log_) {
@@ -439,7 +442,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_10(uint8_t byte) {
-  assert((byte >> 6) == 0x2);
+  CHECK((byte >> 6) == 0x2);
 
   switch ((byte >> 4) & 0x3) {
   case 0:
@@ -469,7 +472,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_11_000(uint8_t byte) {
-  assert((byte & ~0x07) == 0xc0);
+  CHECK((byte & ~0x07) == 0xc0);
 
   uint8_t bits = byte & 0x7;
   if (bits == 6) {
@@ -550,7 +553,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_11_001(uint8_t byte) {
-  assert((byte & ~0x07) == 0xc8);
+  CHECK((byte & ~0x07) == 0xc8);
 
   uint8_t bits = byte & 0x7;
   if (bits == 0) {
@@ -605,7 +608,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_11_010(uint8_t byte) {
-  assert((byte & ~0x07) == 0xd0);
+  CHECK((byte & ~0x07) == 0xd0);
 
   // 11010nnn: Pop VFP double precision registers D[8]-D[8+nnn] by VPUSH
   if (log_) {
@@ -624,7 +627,7 @@
 }
 
 inline bool ArmExidx::DecodePrefix_11(uint8_t byte) {
-  assert((byte >> 6) == 0x3);
+  CHECK((byte >> 6) == 0x3);
 
   switch ((byte >> 3) & 0x7) {
   case 0:
@@ -684,3 +687,5 @@
   while (Decode());
   return status_ == ARM_STATUS_FINISH;
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/ArmExidx.h b/libunwindstack/ArmExidx.h
index 8c7f15a..f4361d4 100644
--- a/libunwindstack/ArmExidx.h
+++ b/libunwindstack/ArmExidx.h
@@ -21,6 +21,8 @@
 
 #include <deque>
 
+namespace unwindstack {
+
 // Forward declarations.
 class Memory;
 class RegsArm;
@@ -105,4 +107,6 @@
   bool pc_set_ = false;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_ARM_EXIDX_H
diff --git a/libunwindstack/AsmGetRegsX86.S b/libunwindstack/AsmGetRegsX86.S
new file mode 100644
index 0000000..14927a3
--- /dev/null
+++ b/libunwindstack/AsmGetRegsX86.S
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+  .text
+  .global AsmGetRegs
+  .balign 16
+  .type AsmGetRegs, @function
+AsmGetRegs:
+  .cfi_startproc
+  mov 4(%esp), %eax
+  movl $0, (%eax)
+  movl %ecx, 4(%eax)
+  movl %edx, 8(%eax)
+  movl %ebx, 12(%eax)
+
+  /* ESP */
+  leal 4(%esp), %ecx
+  movl %ecx, 16(%eax)
+
+  movl %ebp, 20(%eax)
+  movl %esi, 24(%eax)
+  movl %edi, 28(%eax)
+
+  /* EIP */
+  movl (%esp), %ecx
+  movl %ecx, 32(%eax)
+
+  movl %cs, 36(%eax)
+  movl %ss, 40(%eax)
+  movl %ds, 44(%eax)
+  movl %es, 48(%eax)
+  movl %fs, 52(%eax)
+  movl %gs, 56(%eax)
+  ret
+
+  .cfi_endproc
+  .size AsmGetRegs, .-AsmGetRegs
diff --git a/libunwindstack/AsmGetRegsX86_64.S b/libunwindstack/AsmGetRegsX86_64.S
new file mode 100644
index 0000000..4cd3b6f
--- /dev/null
+++ b/libunwindstack/AsmGetRegsX86_64.S
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+  .text
+  .global AsmGetRegs
+  .balign 16
+  .type AsmGetRegs, @function
+AsmGetRegs:
+  .cfi_startproc
+  movq %rax, (%rdi)
+  movq %rdx, 8(%rdi)
+  movq %rcx, 16(%rdi)
+  movq %rbx, 24(%rdi)
+  movq %rsi, 32(%rdi)
+  movq %rdi, 40(%rdi)
+  movq %rbp, 48(%rdi)
+
+  /* RSP */
+  lea 8(%rsp), %rax
+  movq %rax, 56(%rdi)
+
+  movq %r8, 64(%rdi)
+  movq %r9, 72(%rdi)
+  movq %r10, 80(%rdi)
+  movq %r11, 88(%rdi)
+  movq %r12, 96(%rdi)
+  movq %r13, 104(%rdi)
+  movq %r14, 112(%rdi)
+  movq %r15, 120(%rdi)
+
+  /* RIP */
+  movq (%rsp), %rax
+  movq %rax, 128(%rdi)
+  ret
+
+  .cfi_endproc
+  .size AsmGetRegs, .-AsmGetRegs
diff --git a/libunwindstack/Check.h b/libunwindstack/Check.h
new file mode 100644
index 0000000..2d216d7
--- /dev/null
+++ b/libunwindstack/Check.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2017 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_ERROR_H
+#define _LIBUNWINDSTACK_ERROR_H
+
+#include <stdlib.h>
+
+#include <unwindstack/Log.h>
+
+namespace unwindstack {
+
+#define CHECK(assertion)                                   \
+  if (__builtin_expect(!(assertion), false)) {             \
+    log(0, "%s:%d: %s\n", __FILE__, __LINE__, #assertion); \
+    abort();                                               \
+  }
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_ERROR_H
diff --git a/libunwindstack/DwarfCfa.cpp b/libunwindstack/DwarfCfa.cpp
index 006f039..b1d55ba 100644
--- a/libunwindstack/DwarfCfa.cpp
+++ b/libunwindstack/DwarfCfa.cpp
@@ -23,12 +23,15 @@
 
 #include <android-base/stringprintf.h>
 
+#include <unwindstack/DwarfLocation.h>
+#include <unwindstack/Log.h>
+
 #include "DwarfCfa.h"
 #include "DwarfEncoding.h"
-#include "DwarfMemory.h"
+#include "DwarfError.h"
 #include "DwarfOp.h"
-#include "DwarfStructs.h"
-#include "Log.h"
+
+namespace unwindstack {
 
 template <typename AddressType>
 constexpr typename DwarfCfa<AddressType>::process_func DwarfCfa<AddressType>::kCallbackTable[64];
@@ -711,3 +714,5 @@
 // Explicitly instantiate DwarfCfa.
 template class DwarfCfa<uint32_t>;
 template class DwarfCfa<uint64_t>;
+
+}  // namespace unwindstack
diff --git a/libunwindstack/DwarfCfa.h b/libunwindstack/DwarfCfa.h
index 42ebae1..62b9b7a 100644
--- a/libunwindstack/DwarfCfa.h
+++ b/libunwindstack/DwarfCfa.h
@@ -24,10 +24,13 @@
 #include <type_traits>
 #include <vector>
 
+#include <unwindstack/DwarfLocation.h>
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/DwarfStructs.h>
+
 #include "DwarfError.h"
-#include "DwarfLocation.h"
-#include "DwarfMemory.h"
-#include "DwarfStructs.h"
+
+namespace unwindstack {
 
 // DWARF Standard home: http://dwarfstd.org/
 // This code is based on DWARF 4: http://http://dwarfstd.org/doc/DWARF4.pdf
@@ -252,4 +255,6 @@
   };
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_CFA_H
diff --git a/libunwindstack/DwarfDebugFrame.cpp b/libunwindstack/DwarfDebugFrame.cpp
index 3ac02fc..5707596 100644
--- a/libunwindstack/DwarfDebugFrame.cpp
+++ b/libunwindstack/DwarfDebugFrame.cpp
@@ -19,11 +19,14 @@
 
 #include <algorithm>
 
+#include <unwindstack/DwarfStructs.h>
+#include <unwindstack/Memory.h>
+
 #include "DwarfDebugFrame.h"
-#include "DwarfMemory.h"
-#include "DwarfSection.h"
-#include "DwarfStructs.h"
-#include "Memory.h"
+#include "DwarfEncoding.h"
+#include "DwarfError.h"
+
+namespace unwindstack {
 
 template <typename AddressType>
 bool DwarfDebugFrame<AddressType>::Init(uint64_t offset, uint64_t size) {
@@ -309,3 +312,5 @@
 // Explicitly instantiate DwarfDebugFrame.
 template class DwarfDebugFrame<uint32_t>;
 template class DwarfDebugFrame<uint64_t>;
+
+}  // namespace unwindstack
diff --git a/libunwindstack/DwarfDebugFrame.h b/libunwindstack/DwarfDebugFrame.h
index 320368c..6a6178e 100644
--- a/libunwindstack/DwarfDebugFrame.h
+++ b/libunwindstack/DwarfDebugFrame.h
@@ -21,7 +21,9 @@
 
 #include <vector>
 
-#include "DwarfSection.h"
+#include <unwindstack/DwarfSection.h>
+
+namespace unwindstack {
 
 template <typename AddressType>
 class DwarfDebugFrame : public DwarfSectionImpl<AddressType> {
@@ -73,4 +75,6 @@
   std::vector<FdeInfo> fdes_;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_DEBUG_FRAME_H
diff --git a/libunwindstack/DwarfEhFrame.cpp b/libunwindstack/DwarfEhFrame.cpp
index 045fb36..d0b35c3 100644
--- a/libunwindstack/DwarfEhFrame.cpp
+++ b/libunwindstack/DwarfEhFrame.cpp
@@ -14,14 +14,16 @@
  * limitations under the License.
  */
 
-#include <assert.h>
 #include <stdint.h>
 
+#include <unwindstack/DwarfStructs.h>
+#include <unwindstack/Memory.h>
+
+#include "Check.h"
 #include "DwarfEhFrame.h"
-#include "DwarfMemory.h"
-#include "DwarfSection.h"
-#include "DwarfStructs.h"
-#include "Memory.h"
+#include "DwarfError.h"
+
+namespace unwindstack {
 
 template <typename AddressType>
 bool DwarfEhFrame<AddressType>::Init(uint64_t offset, uint64_t size) {
@@ -105,8 +107,8 @@
 template <typename AddressType>
 bool DwarfEhFrame<AddressType>::GetFdeOffsetBinary(uint64_t pc, uint64_t* fde_offset,
                                                    uint64_t total_entries) {
-  assert(fde_count_ > 0);
-  assert(total_entries <= fde_count_);
+  CHECK(fde_count_ > 0);
+  CHECK(total_entries <= fde_count_);
 
   size_t first = 0;
   size_t last = total_entries;
@@ -133,7 +135,7 @@
 
 template <typename AddressType>
 bool DwarfEhFrame<AddressType>::GetFdeOffsetSequential(uint64_t pc, uint64_t* fde_offset) {
-  assert(fde_count_ != 0);
+  CHECK(fde_count_ != 0);
   last_error_ = DWARF_ERROR_NONE;
   // We can do a binary search if the pc is in the range of the elements
   // that have already been cached.
@@ -211,3 +213,5 @@
 // Explicitly instantiate DwarfEhFrame.
 template class DwarfEhFrame<uint32_t>;
 template class DwarfEhFrame<uint64_t>;
+
+}  // namespace unwindstack
diff --git a/libunwindstack/DwarfEhFrame.h b/libunwindstack/DwarfEhFrame.h
index e6909ed..4207b42 100644
--- a/libunwindstack/DwarfEhFrame.h
+++ b/libunwindstack/DwarfEhFrame.h
@@ -19,7 +19,9 @@
 
 #include <stdint.h>
 
-#include "DwarfSection.h"
+#include <unwindstack/DwarfSection.h>
+
+namespace unwindstack {
 
 // Forward declarations.
 class Memory;
@@ -86,4 +88,6 @@
   std::unordered_map<uint64_t, FdeInfo> fde_info_;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_EH_FRAME_H
diff --git a/libunwindstack/DwarfEncoding.h b/libunwindstack/DwarfEncoding.h
index 0ff3b8c..20db222 100644
--- a/libunwindstack/DwarfEncoding.h
+++ b/libunwindstack/DwarfEncoding.h
@@ -19,6 +19,8 @@
 
 #include <stdint.h>
 
+namespace unwindstack {
+
 enum DwarfEncoding : uint8_t {
   DW_EH_PE_omit = 0xff,
 
@@ -44,4 +46,6 @@
   DW_EH_PE_block = 0x0f,
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_ENCODING_H
diff --git a/libunwindstack/DwarfError.h b/libunwindstack/DwarfError.h
index c00f17d..54199b8 100644
--- a/libunwindstack/DwarfError.h
+++ b/libunwindstack/DwarfError.h
@@ -19,6 +19,8 @@
 
 #include <stdint.h>
 
+namespace unwindstack {
+
 enum DwarfError : uint8_t {
   DWARF_ERROR_NONE,
   DWARF_ERROR_MEMORY_INVALID,
@@ -31,4 +33,6 @@
   DWARF_ERROR_UNSUPPORTED_VERSION,
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_ERROR_H
diff --git a/libunwindstack/DwarfMemory.cpp b/libunwindstack/DwarfMemory.cpp
index 11806ea..b6e0412 100644
--- a/libunwindstack/DwarfMemory.cpp
+++ b/libunwindstack/DwarfMemory.cpp
@@ -14,14 +14,17 @@
  * limitations under the License.
  */
 
-#include <assert.h>
 #include <stdint.h>
 
 #include <string>
 
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/Memory.h>
+
+#include "Check.h"
 #include "DwarfEncoding.h"
-#include "DwarfMemory.h"
-#include "Memory.h"
+
+namespace unwindstack {
 
 bool DwarfMemory::ReadBytes(void* dst, size_t num_bytes) {
   if (!memory_->Read(cur_offset_, dst, num_bytes)) {
@@ -100,8 +103,8 @@
 }
 
 bool DwarfMemory::AdjustEncodedValue(uint8_t encoding, uint64_t* value) {
-  assert((encoding & 0x0f) == 0);
-  assert(encoding != DW_EH_PE_aligned);
+  CHECK((encoding & 0x0f) == 0);
+  CHECK(encoding != DW_EH_PE_aligned);
 
   // Handle the encoding.
   switch (encoding) {
@@ -246,3 +249,5 @@
 
 template bool DwarfMemory::ReadEncodedValue<uint32_t>(uint8_t, uint64_t*);
 template bool DwarfMemory::ReadEncodedValue<uint64_t>(uint8_t, uint64_t*);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/DwarfOp.cpp b/libunwindstack/DwarfOp.cpp
index 507ca08..b3fd0df 100644
--- a/libunwindstack/DwarfOp.cpp
+++ b/libunwindstack/DwarfOp.cpp
@@ -22,12 +22,15 @@
 
 #include <android-base/stringprintf.h>
 
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
 #include "DwarfError.h"
-#include "DwarfMemory.h"
 #include "DwarfOp.h"
-#include "Log.h"
-#include "Memory.h"
-#include "Regs.h"
+
+namespace unwindstack {
 
 template <typename AddressType>
 constexpr typename DwarfOp<AddressType>::OpCallback DwarfOp<AddressType>::kCallbackTable[256];
@@ -460,3 +463,5 @@
 // Explicitly instantiate DwarfOp.
 template class DwarfOp<uint32_t>;
 template class DwarfOp<uint64_t>;
+
+}  // namespace unwindstack
diff --git a/libunwindstack/DwarfOp.h b/libunwindstack/DwarfOp.h
index 0f4b36d..c29bf35 100644
--- a/libunwindstack/DwarfOp.h
+++ b/libunwindstack/DwarfOp.h
@@ -25,6 +25,9 @@
 #include <vector>
 
 #include "DwarfEncoding.h"
+#include "DwarfError.h"
+
+namespace unwindstack {
 
 enum DwarfVersion : uint8_t {
   DWARF_VERSION_2 = 2,
@@ -1633,4 +1636,6 @@
   };
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_OP_H
diff --git a/libunwindstack/DwarfSection.cpp b/libunwindstack/DwarfSection.cpp
index 4c98aa3..1234eb1 100644
--- a/libunwindstack/DwarfSection.cpp
+++ b/libunwindstack/DwarfSection.cpp
@@ -16,16 +16,22 @@
 
 #include <stdint.h>
 
+#include <unwindstack/DwarfLocation.h>
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/DwarfSection.h>
+#include <unwindstack/DwarfStructs.h>
+#include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
 #include "DwarfCfa.h"
+#include "DwarfEncoding.h"
 #include "DwarfError.h"
-#include "DwarfLocation.h"
-#include "DwarfMemory.h"
 #include "DwarfOp.h"
-#include "DwarfSection.h"
-#include "DwarfStructs.h"
-#include "Log.h"
-#include "Memory.h"
-#include "Regs.h"
+
+namespace unwindstack {
+
+DwarfSection::DwarfSection(Memory* memory) : memory_(memory), last_error_(DWARF_ERROR_NONE) {}
 
 const DwarfFde* DwarfSection::GetFdeFromPc(uint64_t pc) {
   uint64_t fde_offset;
@@ -42,6 +48,7 @@
 }
 
 bool DwarfSection::Step(uint64_t pc, Regs* regs, Memory* process_memory) {
+  last_error_ = DWARF_ERROR_NONE;
   const DwarfFde* fde = GetFdeFromPc(pc);
   if (fde == nullptr || fde->cie == nullptr) {
     last_error_ = DWARF_ERROR_ILLEGAL_STATE;
@@ -248,6 +255,9 @@
     last_error_ = DWARF_ERROR_MEMORY_INVALID;
     return false;
   }
+  // Set the default for the lsda encoding.
+  cie->lsda_encoding = DW_EH_PE_omit;
+
   if (length32 == static_cast<uint32_t>(-1)) {
     // 64 bit Cie
     uint64_t length64;
@@ -541,3 +551,5 @@
 // Explicitly instantiate DwarfSectionImpl
 template class DwarfSectionImpl<uint32_t>;
 template class DwarfSectionImpl<uint64_t>;
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Elf.cpp b/libunwindstack/Elf.cpp
index 272b5f0..a800c31 100644
--- a/libunwindstack/Elf.cpp
+++ b/libunwindstack/Elf.cpp
@@ -23,12 +23,17 @@
 #define LOG_TAG "unwind"
 #include <log/log.h>
 
-#include "Elf.h"
-#include "ElfInterface.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
 #include "ElfInterfaceArm.h"
 #include "Machine.h"
-#include "Memory.h"
-#include "Regs.h"
+#include "Symbols.h"
+
+namespace unwindstack {
 
 bool Elf::Init() {
   if (!memory_) {
@@ -49,6 +54,58 @@
   return valid_;
 }
 
+// It is expensive to initialize the .gnu_debugdata section. Provide a method
+// to initialize this data separately.
+void Elf::InitGnuDebugdata() {
+  if (!valid_ || interface_->gnu_debugdata_offset() == 0) {
+    return;
+  }
+
+  gnu_debugdata_memory_.reset(interface_->CreateGnuDebugdataMemory());
+  gnu_debugdata_interface_.reset(CreateInterfaceFromMemory(gnu_debugdata_memory_.get()));
+  ElfInterface* gnu = gnu_debugdata_interface_.get();
+  if (gnu == nullptr) {
+    return;
+  }
+  if (gnu->Init()) {
+    gnu->InitHeaders();
+  } else {
+    // Free all of the memory associated with the gnu_debugdata section.
+    gnu_debugdata_memory_.reset(nullptr);
+    gnu_debugdata_interface_.reset(nullptr);
+  }
+}
+
+bool Elf::GetSoname(std::string* name) {
+  return valid_ && interface_->GetSoname(name);
+}
+
+uint64_t Elf::GetRelPc(uint64_t pc, const MapInfo* map_info) {
+  uint64_t load_bias = 0;
+  if (valid()) {
+    load_bias = interface_->load_bias();
+  }
+
+  return pc - map_info->start + load_bias + map_info->elf_offset;
+}
+
+bool Elf::GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset) {
+  return valid_ && (interface_->GetFunctionName(addr, name, func_offset) ||
+                    (gnu_debugdata_interface_ &&
+                     gnu_debugdata_interface_->GetFunctionName(addr, name, func_offset)));
+}
+
+bool Elf::Step(uint64_t rel_pc, Regs* regs, Memory* process_memory) {
+  return valid_ && (interface_->Step(rel_pc, regs, process_memory) ||
+                    (gnu_debugdata_interface_ &&
+                     gnu_debugdata_interface_->Step(rel_pc, regs, process_memory)));
+}
+
+uint64_t Elf::GetLoadBias() {
+  if (!valid_) return 0;
+  return interface_->load_bias();
+}
+
 bool Elf::IsValidElf(Memory* memory) {
   if (memory == nullptr) {
     return false;
@@ -111,3 +168,5 @@
 
   return interface.release();
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/ElfInterface.cpp b/libunwindstack/ElfInterface.cpp
index 3a7f7cb..75abc85 100644
--- a/libunwindstack/ElfInterface.cpp
+++ b/libunwindstack/ElfInterface.cpp
@@ -20,21 +20,82 @@
 #include <memory>
 #include <string>
 
+#include <7zCrc.h>
+#include <Xz.h>
+#include <XzCrc64.h>
+
+#include <unwindstack/DwarfSection.h>
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
 #include "DwarfDebugFrame.h"
 #include "DwarfEhFrame.h"
-#include "DwarfSection.h"
-#include "ElfInterface.h"
-#include "Log.h"
-#include "Memory.h"
-#include "Regs.h"
 #include "Symbols.h"
 
+namespace unwindstack {
+
 ElfInterface::~ElfInterface() {
   for (auto symbol : symbols_) {
     delete symbol;
   }
 }
 
+Memory* ElfInterface::CreateGnuDebugdataMemory() {
+  if (gnu_debugdata_offset_ == 0 || gnu_debugdata_size_ == 0) {
+    return nullptr;
+  }
+
+  // TODO: Only call these initialization functions once.
+  CrcGenerateTable();
+  Crc64GenerateTable();
+
+  std::vector<uint8_t> src(gnu_debugdata_size_);
+  if (!memory_->Read(gnu_debugdata_offset_, src.data(), gnu_debugdata_size_)) {
+    gnu_debugdata_offset_ = 0;
+    gnu_debugdata_size_ = static_cast<uint64_t>(-1);
+    return nullptr;
+  }
+
+  ISzAlloc alloc;
+  CXzUnpacker state;
+  alloc.Alloc = [](void*, size_t size) { return malloc(size); };
+  alloc.Free = [](void*, void* ptr) { return free(ptr); };
+
+  XzUnpacker_Construct(&state, &alloc);
+
+  std::unique_ptr<MemoryBuffer> dst(new MemoryBuffer);
+  int return_val;
+  size_t src_offset = 0;
+  size_t dst_offset = 0;
+  ECoderStatus status;
+  dst->Resize(5 * gnu_debugdata_size_);
+  do {
+    size_t src_remaining = src.size() - src_offset;
+    size_t dst_remaining = dst->Size() - dst_offset;
+    if (dst_remaining < 2 * gnu_debugdata_size_) {
+      dst->Resize(dst->Size() + 2 * gnu_debugdata_size_);
+      dst_remaining += 2 * gnu_debugdata_size_;
+    }
+    return_val = XzUnpacker_Code(&state, dst->GetPtr(dst_offset), &dst_remaining, &src[src_offset],
+                                 &src_remaining, CODER_FINISH_ANY, &status);
+    src_offset += src_remaining;
+    dst_offset += dst_remaining;
+  } while (return_val == SZ_OK && status == CODER_STATUS_NOT_FINISHED);
+  XzUnpacker_Free(&state);
+  if (return_val != SZ_OK || !XzUnpacker_IsStreamWasFinished(&state)) {
+    gnu_debugdata_offset_ = 0;
+    gnu_debugdata_size_ = static_cast<uint64_t>(-1);
+    return nullptr;
+  }
+
+  // Shrink back down to the exact size.
+  dst->Resize(dst_offset);
+
+  return dst.release();
+}
+
 template <typename AddressType>
 void ElfInterface::InitHeadersWithTemplate() {
   if (eh_frame_offset_ != 0) {
@@ -329,3 +390,5 @@
                                                                    uint64_t*);
 template bool ElfInterface::GetFunctionNameWithTemplate<Elf64_Sym>(uint64_t, std::string*,
                                                                    uint64_t*);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/ElfInterfaceArm.cpp b/libunwindstack/ElfInterfaceArm.cpp
index bab84cc..66bc51f 100644
--- a/libunwindstack/ElfInterfaceArm.cpp
+++ b/libunwindstack/ElfInterfaceArm.cpp
@@ -17,12 +17,14 @@
 #include <elf.h>
 #include <stdint.h>
 
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
 #include "ArmExidx.h"
-#include "ElfInterface.h"
 #include "ElfInterfaceArm.h"
 #include "Machine.h"
-#include "Memory.h"
-#include "Regs.h"
+
+namespace unwindstack {
 
 bool ElfInterfaceArm::FindEntry(uint32_t pc, uint64_t* entry_offset) {
   if (start_offset_ == 0 || total_entries_ == 0) {
@@ -127,3 +129,5 @@
   }
   return false;
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/ElfInterfaceArm.h b/libunwindstack/ElfInterfaceArm.h
index ece694f..1f4e8cb 100644
--- a/libunwindstack/ElfInterfaceArm.h
+++ b/libunwindstack/ElfInterfaceArm.h
@@ -23,8 +23,10 @@
 #include <iterator>
 #include <unordered_map>
 
-#include "ElfInterface.h"
-#include "Memory.h"
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 class ElfInterfaceArm : public ElfInterface32 {
  public:
@@ -87,4 +89,6 @@
   std::unordered_map<size_t, uint32_t> addrs_;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_ELF_INTERFACE_ARM_H
diff --git a/libunwindstack/Log.cpp b/libunwindstack/Log.cpp
index faeb66c..436e23c 100644
--- a/libunwindstack/Log.cpp
+++ b/libunwindstack/Log.cpp
@@ -25,7 +25,9 @@
 
 #include <android-base/stringprintf.h>
 
-#include "Log.h"
+#include <unwindstack/Log.h>
+
+namespace unwindstack {
 
 static bool g_print_to_stdout = false;
 
@@ -51,3 +53,5 @@
   }
   va_end(args);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Machine.h b/libunwindstack/Machine.h
index 323ce80..1fb9309 100644
--- a/libunwindstack/Machine.h
+++ b/libunwindstack/Machine.h
@@ -19,6 +19,8 @@
 
 #include <stdint.h>
 
+namespace unwindstack {
+
 enum ArmReg : uint16_t {
   ARM_REG_R0 = 0,
   ARM_REG_R1,
@@ -83,51 +85,57 @@
   ARM64_REG_LR = ARM64_REG_R30,
 };
 
+// Matches the numbers for the registers as generated by compilers.
+// If this is changed, then unwinding will fail.
 enum X86Reg : uint16_t {
   X86_REG_EAX = 0,
-  X86_REG_ECX,
-  X86_REG_EDX,
-  X86_REG_EBX,
-  X86_REG_ESP,
-  X86_REG_EBP,
-  X86_REG_ESI,
-  X86_REG_EDI,
-  X86_REG_EIP,
-  X86_REG_EFL,
-  X86_REG_CS,
-  X86_REG_SS,
-  X86_REG_DS,
-  X86_REG_ES,
-  X86_REG_FS,
-  X86_REG_GS,
+  X86_REG_ECX = 1,
+  X86_REG_EDX = 2,
+  X86_REG_EBX = 3,
+  X86_REG_ESP = 4,
+  X86_REG_EBP = 5,
+  X86_REG_ESI = 6,
+  X86_REG_EDI = 7,
+  X86_REG_EIP = 8,
+  X86_REG_EFL = 9,
+  X86_REG_CS = 10,
+  X86_REG_SS = 11,
+  X86_REG_DS = 12,
+  X86_REG_ES = 13,
+  X86_REG_FS = 14,
+  X86_REG_GS = 15,
   X86_REG_LAST,
 
   X86_REG_SP = X86_REG_ESP,
   X86_REG_PC = X86_REG_EIP,
 };
 
+// Matches the numbers for the registers as generated by compilers.
+// If this is changed, then unwinding will fail.
 enum X86_64Reg : uint16_t {
   X86_64_REG_RAX = 0,
-  X86_64_REG_RDX,
-  X86_64_REG_RCX,
-  X86_64_REG_RBX,
-  X86_64_REG_RSI,
-  X86_64_REG_RDI,
-  X86_64_REG_RBP,
-  X86_64_REG_RSP,
-  X86_64_REG_R8,
-  X86_64_REG_R9,
-  X86_64_REG_R10,
-  X86_64_REG_R11,
-  X86_64_REG_R12,
-  X86_64_REG_R13,
-  X86_64_REG_R14,
-  X86_64_REG_R15,
-  X86_64_REG_RIP,
+  X86_64_REG_RDX = 1,
+  X86_64_REG_RCX = 2,
+  X86_64_REG_RBX = 3,
+  X86_64_REG_RSI = 4,
+  X86_64_REG_RDI = 5,
+  X86_64_REG_RBP = 6,
+  X86_64_REG_RSP = 7,
+  X86_64_REG_R8 = 8,
+  X86_64_REG_R9 = 9,
+  X86_64_REG_R10 = 10,
+  X86_64_REG_R11 = 11,
+  X86_64_REG_R12 = 12,
+  X86_64_REG_R13 = 13,
+  X86_64_REG_R14 = 14,
+  X86_64_REG_R15 = 15,
+  X86_64_REG_RIP = 16,
   X86_64_REG_LAST,
 
   X86_64_REG_SP = X86_64_REG_RSP,
   X86_64_REG_PC = X86_64_REG_RIP,
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_MACHINE_H
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index 051f700..d0e1216 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -20,10 +20,12 @@
 #include <memory>
 #include <string>
 
-#include "Elf.h"
-#include "MapInfo.h"
-#include "Maps.h"
-#include "Memory.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 Memory* MapInfo::CreateMemory(pid_t pid) {
   if (end <= start) {
@@ -73,14 +75,18 @@
   return new MemoryRange(memory, start, end);
 }
 
-Elf* MapInfo::GetElf(pid_t pid, bool) {
+Elf* MapInfo::GetElf(pid_t pid, bool init_gnu_debugdata) {
   if (elf) {
     return elf;
   }
 
   elf = new Elf(CreateMemory(pid));
-  elf->Init();
+  if (elf->Init() && init_gnu_debugdata) {
+    elf->InitGnuDebugdata();
+  }
   // If the init fails, keep the elf around as an invalid object so we
   // don't try to reinit the object.
   return elf;
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Maps.cpp b/libunwindstack/Maps.cpp
index b869918..8a90423 100644
--- a/libunwindstack/Maps.cpp
+++ b/libunwindstack/Maps.cpp
@@ -29,7 +29,11 @@
 #include <string>
 #include <vector>
 
-#include "Maps.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
 
 MapInfo* Maps::Find(uint64_t pc) {
   if (maps_.empty()) {
@@ -196,3 +200,5 @@
   }
   return true;
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Memory.cpp b/libunwindstack/Memory.cpp
index 9e46509..8c36055 100644
--- a/libunwindstack/Memory.cpp
+++ b/libunwindstack/Memory.cpp
@@ -28,7 +28,11 @@
 
 #include <android-base/unique_fd.h>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
+
+#include "Check.h"
+
+namespace unwindstack {
 
 bool Memory::ReadString(uint64_t addr, std::string* string, uint64_t max_read) {
   string->clear();
@@ -245,6 +249,11 @@
   return true;
 }
 
+MemoryRange::MemoryRange(Memory* memory, uint64_t begin, uint64_t end)
+    : memory_(memory), begin_(begin), length_(end - begin) {
+  CHECK(end > begin);
+}
+
 bool MemoryRange::Read(uint64_t addr, void* dst, size_t size) {
   uint64_t max_read;
   if (__builtin_add_overflow(addr, size, &max_read) || max_read > length_) {
@@ -253,3 +262,5 @@
   // The check above guarantees that addr + begin_ will not overflow.
   return memory_->Read(addr + begin_, dst, size);
 }
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Regs.cpp b/libunwindstack/Regs.cpp
index e7d10b2..aa59e31 100644
--- a/libunwindstack/Regs.cpp
+++ b/libunwindstack/Regs.cpp
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-#include <assert.h>
 #include <elf.h>
 #include <stdint.h>
 #include <sys/ptrace.h>
@@ -22,28 +21,23 @@
 
 #include <vector>
 
-#include "Elf.h"
-#include "ElfInterface.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
+#include "Check.h"
 #include "Machine.h"
-#include "MapInfo.h"
-#include "Regs.h"
+#include "Ucontext.h"
 #include "User.h"
 
-template <typename AddressType>
-uint64_t RegsImpl<AddressType>::GetRelPc(Elf* elf, const MapInfo* map_info) {
-  uint64_t load_bias = 0;
-  if (elf->valid()) {
-    load_bias = elf->interface()->load_bias();
-  }
-
-  return pc_ - map_info->start + load_bias + map_info->elf_offset;
-}
+namespace unwindstack {
 
 template <typename AddressType>
 bool RegsImpl<AddressType>::GetReturnAddressFromDefault(Memory* memory, uint64_t* value) {
   switch (return_loc_.type) {
   case LOCATION_REGISTER:
-    assert(return_loc_.value < total_regs_);
+    CHECK(return_loc_.value < total_regs_);
     *value = regs_[return_loc_.value];
     return true;
   case LOCATION_SP_OFFSET:
@@ -88,6 +82,11 @@
   return rel_pc - 4;
 }
 
+void RegsArm::SetFromRaw() {
+  set_pc(regs_[ARM_REG_PC]);
+  set_sp(regs_[ARM_REG_SP]);
+}
+
 RegsArm64::RegsArm64()
     : RegsImpl<uint64_t>(ARM64_REG_LAST, ARM64_REG_SP, Location(LOCATION_REGISTER, ARM64_REG_LR)) {}
 
@@ -102,6 +101,11 @@
   return rel_pc - 4;
 }
 
+void RegsArm64::SetFromRaw() {
+  set_pc(regs_[ARM64_REG_PC]);
+  set_sp(regs_[ARM64_REG_SP]);
+}
+
 RegsX86::RegsX86()
     : RegsImpl<uint32_t>(X86_REG_LAST, X86_REG_SP, Location(LOCATION_SP_OFFSET, -4)) {}
 
@@ -116,6 +120,11 @@
   return rel_pc - 1;
 }
 
+void RegsX86::SetFromRaw() {
+  set_pc(regs_[X86_REG_PC]);
+  set_sp(regs_[X86_REG_SP]);
+}
+
 RegsX86_64::RegsX86_64()
     : RegsImpl<uint64_t>(X86_64_REG_LAST, X86_64_REG_SP, Location(LOCATION_SP_OFFSET, -8)) {}
 
@@ -131,15 +140,17 @@
   return rel_pc - 1;
 }
 
+void RegsX86_64::SetFromRaw() {
+  set_pc(regs_[X86_64_REG_PC]);
+  set_sp(regs_[X86_64_REG_SP]);
+}
+
 static Regs* ReadArm(void* remote_data) {
   arm_user_regs* user = reinterpret_cast<arm_user_regs*>(remote_data);
 
   RegsArm* regs = new RegsArm();
   memcpy(regs->RawData(), &user->regs[0], ARM_REG_LAST * sizeof(uint32_t));
-
-  regs->set_pc(user->regs[ARM_REG_PC]);
-  regs->set_sp(user->regs[ARM_REG_SP]);
-
+  regs->SetFromRaw();
   return regs;
 }
 
@@ -148,9 +159,10 @@
 
   RegsArm64* regs = new RegsArm64();
   memcpy(regs->RawData(), &user->regs[0], (ARM64_REG_R31 + 1) * sizeof(uint64_t));
-  regs->set_pc(user->pc);
-  regs->set_sp(user->sp);
-
+  uint64_t* reg_data = reinterpret_cast<uint64_t*>(regs->RawData());
+  reg_data[ARM64_REG_PC] = user->pc;
+  reg_data[ARM64_REG_SP] = user->sp;
+  regs->SetFromRaw();
   return regs;
 }
 
@@ -168,9 +180,7 @@
   (*regs)[X86_REG_ESP] = user->esp;
   (*regs)[X86_REG_EIP] = user->eip;
 
-  regs->set_pc(user->eip);
-  regs->set_sp(user->esp);
-
+  regs->SetFromRaw();
   return regs;
 }
 
@@ -196,9 +206,7 @@
   (*regs)[X86_64_REG_RSP] = user->rsp;
   (*regs)[X86_64_REG_RIP] = user->rip;
 
-  regs->set_pc(user->rip);
-  regs->set_sp(user->rsp);
-
+  regs->SetFromRaw();
   return regs;
 }
 
@@ -231,3 +239,113 @@
   }
   return nullptr;
 }
+
+static Regs* CreateFromArmUcontext(void* ucontext) {
+  arm_ucontext_t* arm_ucontext = reinterpret_cast<arm_ucontext_t*>(ucontext);
+
+  RegsArm* regs = new RegsArm();
+  memcpy(regs->RawData(), &arm_ucontext->uc_mcontext.regs[0], ARM_REG_LAST * sizeof(uint32_t));
+  regs->SetFromRaw();
+  return regs;
+}
+
+static Regs* CreateFromArm64Ucontext(void* ucontext) {
+  arm64_ucontext_t* arm64_ucontext = reinterpret_cast<arm64_ucontext_t*>(ucontext);
+
+  RegsArm64* regs = new RegsArm64();
+  memcpy(regs->RawData(), &arm64_ucontext->uc_mcontext.regs[0], ARM64_REG_LAST * sizeof(uint64_t));
+  regs->SetFromRaw();
+  return regs;
+}
+
+static Regs* CreateFromX86Ucontext(void* ucontext) {
+  x86_ucontext_t* x86_ucontext = reinterpret_cast<x86_ucontext_t*>(ucontext);
+
+  RegsX86* regs = new RegsX86();
+  // Put the registers in the expected order.
+  (*regs)[X86_REG_GS] = x86_ucontext->uc_mcontext.gs;
+  (*regs)[X86_REG_FS] = x86_ucontext->uc_mcontext.fs;
+  (*regs)[X86_REG_ES] = x86_ucontext->uc_mcontext.es;
+  (*regs)[X86_REG_DS] = x86_ucontext->uc_mcontext.ds;
+  (*regs)[X86_REG_EDI] = x86_ucontext->uc_mcontext.edi;
+  (*regs)[X86_REG_ESI] = x86_ucontext->uc_mcontext.esi;
+  (*regs)[X86_REG_EBP] = x86_ucontext->uc_mcontext.ebp;
+  (*regs)[X86_REG_ESP] = x86_ucontext->uc_mcontext.esp;
+  (*regs)[X86_REG_EBX] = x86_ucontext->uc_mcontext.ebx;
+  (*regs)[X86_REG_EDX] = x86_ucontext->uc_mcontext.edx;
+  (*regs)[X86_REG_ECX] = x86_ucontext->uc_mcontext.ecx;
+  (*regs)[X86_REG_EAX] = x86_ucontext->uc_mcontext.eax;
+  (*regs)[X86_REG_EIP] = x86_ucontext->uc_mcontext.eip;
+  regs->SetFromRaw();
+  return regs;
+}
+
+static Regs* CreateFromX86_64Ucontext(void* ucontext) {
+  x86_64_ucontext_t* x86_64_ucontext = reinterpret_cast<x86_64_ucontext_t*>(ucontext);
+
+  RegsX86_64* regs = new RegsX86_64();
+  // Put the registers in the expected order.
+
+  // R8-R15
+  memcpy(&(*regs)[X86_64_REG_R8], &x86_64_ucontext->uc_mcontext.r8, 8 * sizeof(uint64_t));
+
+  // Rest of the registers.
+  (*regs)[X86_64_REG_RDI] = x86_64_ucontext->uc_mcontext.rdi;
+  (*regs)[X86_64_REG_RSI] = x86_64_ucontext->uc_mcontext.rsi;
+  (*regs)[X86_64_REG_RBP] = x86_64_ucontext->uc_mcontext.rbp;
+  (*regs)[X86_64_REG_RBX] = x86_64_ucontext->uc_mcontext.rbx;
+  (*regs)[X86_64_REG_RDX] = x86_64_ucontext->uc_mcontext.rdx;
+  (*regs)[X86_64_REG_RAX] = x86_64_ucontext->uc_mcontext.rax;
+  (*regs)[X86_64_REG_RCX] = x86_64_ucontext->uc_mcontext.rcx;
+  (*regs)[X86_64_REG_RSP] = x86_64_ucontext->uc_mcontext.rsp;
+  (*regs)[X86_64_REG_RIP] = x86_64_ucontext->uc_mcontext.rip;
+
+  regs->SetFromRaw();
+  return regs;
+}
+
+Regs* Regs::CreateFromUcontext(uint32_t machine_type, void* ucontext) {
+  switch (machine_type) {
+    case EM_386:
+      return CreateFromX86Ucontext(ucontext);
+    case EM_X86_64:
+      return CreateFromX86_64Ucontext(ucontext);
+    case EM_ARM:
+      return CreateFromArmUcontext(ucontext);
+    case EM_AARCH64:
+      return CreateFromArm64Ucontext(ucontext);
+  }
+  return nullptr;
+}
+
+uint32_t Regs::GetMachineType() {
+#if defined(__arm__)
+  return EM_ARM;
+#elif defined(__aarch64__)
+  return EM_AARCH64;
+#elif defined(__i386__)
+  return EM_386;
+#elif defined(__x86_64__)
+  return EM_X86_64;
+#else
+  abort();
+#endif
+}
+
+Regs* Regs::CreateFromLocal() {
+  Regs* regs;
+#if defined(__arm__)
+  regs = new RegsArm();
+#elif defined(__aarch64__)
+  regs = new RegsArm64();
+#elif defined(__i386__)
+  regs = new RegsX86();
+#elif defined(__x86_64__)
+  regs = new RegsX86_64();
+#else
+  abort();
+#endif
+  return regs;
+}
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Symbols.cpp b/libunwindstack/Symbols.cpp
index 86c1233..42d816a 100644
--- a/libunwindstack/Symbols.cpp
+++ b/libunwindstack/Symbols.cpp
@@ -14,15 +14,18 @@
  * limitations under the License.
  */
 
-#include <assert.h>
 #include <elf.h>
 #include <stdint.h>
 
 #include <string>
 
-#include "Memory.h"
+#include <unwindstack/Memory.h>
+
+#include "Check.h"
 #include "Symbols.h"
 
+namespace unwindstack {
+
 Symbols::Symbols(uint64_t offset, uint64_t size, uint64_t entry_size, uint64_t str_offset,
                  uint64_t str_size)
     : cur_offset_(offset),
@@ -58,7 +61,7 @@
   if (symbols_.size() != 0) {
     const Info* info = GetInfoFromCache(addr);
     if (info) {
-      assert(addr >= info->start_offset && addr <= info->end_offset);
+      CHECK(addr >= info->start_offset && addr <= info->end_offset);
       *func_offset = addr - info->start_offset;
       return elf_memory->ReadString(info->str_offset, name, str_end_ - info->str_offset);
     }
@@ -108,3 +111,5 @@
 // Instantiate all of the needed template functions.
 template bool Symbols::GetName<Elf32_Sym>(uint64_t, uint64_t, Memory*, std::string*, uint64_t*);
 template bool Symbols::GetName<Elf64_Sym>(uint64_t, uint64_t, Memory*, std::string*, uint64_t*);
+
+}  // namespace unwindstack
diff --git a/libunwindstack/Symbols.h b/libunwindstack/Symbols.h
index 3c0d033..689144b 100644
--- a/libunwindstack/Symbols.h
+++ b/libunwindstack/Symbols.h
@@ -22,6 +22,8 @@
 #include <string>
 #include <vector>
 
+namespace unwindstack {
+
 // Forward declaration.
 class Memory;
 
@@ -61,4 +63,6 @@
   std::vector<Info> symbols_;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_SYMBOLS_H
diff --git a/libunwindstack/Ucontext.h b/libunwindstack/Ucontext.h
new file mode 100644
index 0000000..410af26
--- /dev/null
+++ b/libunwindstack/Ucontext.h
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LIBUNWINDSTACK_UCONTEXT_H
+#define _LIBUNWINDSTACK_UCONTEXT_H
+
+#include <stdint.h>
+
+namespace unwindstack {
+
+//-------------------------------------------------------------------
+// ARM ucontext structures
+//-------------------------------------------------------------------
+struct arm_stack_t {
+  uint32_t ss_sp;    // void __user*
+  int32_t ss_flags;  // int
+  uint32_t ss_size;  // size_t
+};
+
+struct arm_mcontext_t {
+  uint32_t trap_no;             // unsigned long
+  uint32_t error_code;          // unsigned long
+  uint32_t oldmask;             // unsigned long
+  uint32_t regs[ARM_REG_LAST];  // unsigned long
+  uint32_t cpsr;                // unsigned long
+  uint32_t fault_address;       // unsigned long
+};
+
+struct arm_ucontext_t {
+  uint32_t uc_flags;  // unsigned long
+  uint32_t uc_link;   // struct ucontext*
+  arm_stack_t uc_stack;
+  arm_mcontext_t uc_mcontext;
+  // Nothing else is used, so don't define it.
+};
+//-------------------------------------------------------------------
+
+//-------------------------------------------------------------------
+// ARM64 ucontext structures
+//-------------------------------------------------------------------
+struct arm64_stack_t {
+  uint64_t ss_sp;    // void __user*
+  int32_t ss_flags;  // int
+  uint64_t ss_size;  // size_t
+};
+
+struct arm64_sigset_t {
+  uint64_t sig;  // unsigned long
+};
+
+struct arm64_mcontext_t {
+  uint64_t fault_address;         // __u64
+  uint64_t regs[ARM64_REG_LAST];  // __u64
+  uint64_t pstate;                // __u64
+  // Nothing else is used, so don't define it.
+};
+
+struct arm64_ucontext_t {
+  uint64_t uc_flags;  // unsigned long
+  uint64_t uc_link;   // struct ucontext*
+  arm64_stack_t uc_stack;
+  arm64_sigset_t uc_sigmask;
+  // The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64.
+  char __padding[128 - sizeof(arm64_sigset_t)];
+  // The full structure requires 16 byte alignment, but our partial structure
+  // doesn't, so force the alignment.
+  arm64_mcontext_t uc_mcontext __attribute__((aligned(16)));
+};
+//-------------------------------------------------------------------
+
+//-------------------------------------------------------------------
+// X86 ucontext structures
+//-------------------------------------------------------------------
+struct x86_stack_t {
+  uint32_t ss_sp;    // void __user*
+  int32_t ss_flags;  // int
+  uint32_t ss_size;  // size_t
+};
+
+struct x86_mcontext_t {
+  uint32_t gs;
+  uint32_t fs;
+  uint32_t es;
+  uint32_t ds;
+  uint32_t edi;
+  uint32_t esi;
+  uint32_t ebp;
+  uint32_t esp;
+  uint32_t ebx;
+  uint32_t edx;
+  uint32_t ecx;
+  uint32_t eax;
+  uint32_t trapno;
+  uint32_t err;
+  uint32_t eip;
+  uint32_t cs;
+  uint32_t efl;
+  uint32_t uesp;
+  uint32_t ss;
+  // Only care about the registers, skip everything else.
+};
+
+struct x86_ucontext_t {
+  uint32_t uc_flags;  // unsigned long
+  uint32_t uc_link;   // struct ucontext*
+  x86_stack_t uc_stack;
+  x86_mcontext_t uc_mcontext;
+  // Nothing else is used, so don't define it.
+};
+//-------------------------------------------------------------------
+
+//-------------------------------------------------------------------
+// X86_64 ucontext structures
+//-------------------------------------------------------------------
+struct x86_64_stack_t {
+  uint64_t ss_sp;    // void __user*
+  int32_t ss_flags;  // int
+  uint64_t ss_size;  // size_t
+};
+
+struct x86_64_mcontext_t {
+  uint64_t r8;
+  uint64_t r9;
+  uint64_t r10;
+  uint64_t r11;
+  uint64_t r12;
+  uint64_t r13;
+  uint64_t r14;
+  uint64_t r15;
+  uint64_t rdi;
+  uint64_t rsi;
+  uint64_t rbp;
+  uint64_t rbx;
+  uint64_t rdx;
+  uint64_t rax;
+  uint64_t rcx;
+  uint64_t rsp;
+  uint64_t rip;
+  uint64_t efl;
+  uint64_t csgsfs;
+  uint64_t err;
+  uint64_t trapno;
+  uint64_t oldmask;
+  uint64_t cr2;
+  // Only care about the registers, skip everything else.
+};
+
+typedef struct x86_64_ucontext {
+  uint64_t uc_flags;  // unsigned long
+  uint64_t uc_link;   // struct ucontext*
+  x86_64_stack_t uc_stack;
+  x86_64_mcontext_t uc_mcontext;
+  // Nothing else is used, so don't define it.
+} x86_64_ucontext_t;
+//-------------------------------------------------------------------
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_UCONTEXT_H
diff --git a/libunwindstack/User.h b/libunwindstack/User.h
index a695467..53f7e50 100644
--- a/libunwindstack/User.h
+++ b/libunwindstack/User.h
@@ -29,6 +29,8 @@
 #ifndef _LIBUNWINDSTACK_USER_H
 #define _LIBUNWINDSTACK_USER_H
 
+namespace unwindstack {
+
 struct x86_user_regs {
   uint32_t ebx;
   uint32_t ecx;
@@ -93,4 +95,6 @@
 // The largest user structure.
 constexpr size_t MAX_USER_REGS_SIZE = sizeof(arm64_user_regs) + 10;
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_USER_H
diff --git a/libunwindstack/DwarfLocation.h b/libunwindstack/include/unwindstack/DwarfLocation.h
similarity index 95%
rename from libunwindstack/DwarfLocation.h
rename to libunwindstack/include/unwindstack/DwarfLocation.h
index 062d125..3467e6a 100644
--- a/libunwindstack/DwarfLocation.h
+++ b/libunwindstack/include/unwindstack/DwarfLocation.h
@@ -21,6 +21,8 @@
 
 #include <unordered_map>
 
+namespace unwindstack {
+
 enum DwarfLocationEnum : uint8_t {
   DWARF_LOCATION_INVALID = 0,
   DWARF_LOCATION_UNDEFINED,
@@ -38,4 +40,6 @@
 
 typedef std::unordered_map<uint16_t, DwarfLocation> dwarf_loc_regs_t;
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_LOCATION_H
diff --git a/libunwindstack/DwarfMemory.h b/libunwindstack/include/unwindstack/DwarfMemory.h
similarity index 97%
rename from libunwindstack/DwarfMemory.h
rename to libunwindstack/include/unwindstack/DwarfMemory.h
index a304dd9..8dd8d2b 100644
--- a/libunwindstack/DwarfMemory.h
+++ b/libunwindstack/include/unwindstack/DwarfMemory.h
@@ -19,6 +19,8 @@
 
 #include <stdint.h>
 
+namespace unwindstack {
+
 // Forward declarations.
 class Memory;
 
@@ -69,4 +71,6 @@
   uint64_t text_offset_ = static_cast<uint64_t>(-1);
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_MEMORY_H
diff --git a/libunwindstack/DwarfSection.h b/libunwindstack/include/unwindstack/DwarfSection.h
similarity index 93%
rename from libunwindstack/DwarfSection.h
rename to libunwindstack/include/unwindstack/DwarfSection.h
index e617601..a97ca2b 100644
--- a/libunwindstack/DwarfSection.h
+++ b/libunwindstack/include/unwindstack/DwarfSection.h
@@ -22,18 +22,20 @@
 #include <iterator>
 #include <unordered_map>
 
-#include "DwarfError.h"
-#include "DwarfLocation.h"
-#include "DwarfMemory.h"
-#include "DwarfStructs.h"
+#include <unwindstack/DwarfLocation.h>
+#include <unwindstack/DwarfMemory.h>
+#include <unwindstack/DwarfStructs.h>
+
+namespace unwindstack {
 
 // Forward declarations.
+enum DwarfError : uint8_t;
 class Memory;
 class Regs;
 
 class DwarfSection {
  public:
-  DwarfSection(Memory* memory) : memory_(memory) {}
+  DwarfSection(Memory* memory);
   virtual ~DwarfSection() = default;
 
   class iterator : public std::iterator<std::bidirectional_iterator_tag, DwarfFde*> {
@@ -102,7 +104,7 @@
 
  protected:
   DwarfMemory memory_;
-  DwarfError last_error_ = DWARF_ERROR_NONE;
+  DwarfError last_error_;
 
   uint64_t fde_count_;
   std::unordered_map<uint64_t, DwarfFde> fde_entries_;
@@ -134,4 +136,6 @@
                       AddressType* value);
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_SECTION_H
diff --git a/libunwindstack/DwarfStructs.h b/libunwindstack/include/unwindstack/DwarfStructs.h
similarity index 92%
rename from libunwindstack/DwarfStructs.h
rename to libunwindstack/include/unwindstack/DwarfStructs.h
index 87182c9..4b481f0 100644
--- a/libunwindstack/DwarfStructs.h
+++ b/libunwindstack/include/unwindstack/DwarfStructs.h
@@ -21,12 +21,12 @@
 
 #include <vector>
 
-#include "DwarfEncoding.h"
+namespace unwindstack {
 
 struct DwarfCie {
   uint8_t version = 0;
-  uint8_t fde_address_encoding = DW_EH_PE_absptr;
-  uint8_t lsda_encoding = DW_EH_PE_omit;
+  uint8_t fde_address_encoding = 0;
+  uint8_t lsda_encoding = 0;
   uint8_t segment_size = 0;
   std::vector<char> augmentation_string;
   uint64_t personality_handler = 0;
@@ -49,4 +49,6 @@
 
 constexpr uint16_t CFA_REG = static_cast<uint16_t>(-1);
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_DWARF_STRUCTS_H
diff --git a/libunwindstack/Elf.h b/libunwindstack/include/unwindstack/Elf.h
similarity index 77%
rename from libunwindstack/Elf.h
rename to libunwindstack/include/unwindstack/Elf.h
index f9db541..d89a746 100644
--- a/libunwindstack/Elf.h
+++ b/libunwindstack/include/unwindstack/Elf.h
@@ -22,14 +22,17 @@
 #include <memory>
 #include <string>
 
-#include "ElfInterface.h"
-#include "Memory.h"
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/Memory.h>
 
 #if !defined(EM_AARCH64)
 #define EM_AARCH64 183
 #endif
 
+namespace unwindstack {
+
 // Forward declaration.
+struct MapInfo;
 class Regs;
 
 class Elf {
@@ -41,20 +44,18 @@
 
   void InitGnuDebugdata();
 
-  bool GetSoname(std::string* name) {
-    return valid_ && interface_->GetSoname(name);
-  }
+  bool GetSoname(std::string* name);
 
-  bool GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset) {
-    return valid_ && interface_->GetFunctionName(addr, name, func_offset);
-  }
+  bool GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset);
 
-  bool Step(uint64_t rel_pc, Regs* regs, Memory* process_memory) {
-    return valid_ && interface_->Step(rel_pc, regs, process_memory);
-  }
+  uint64_t GetRelPc(uint64_t pc, const MapInfo* map_info);
+
+  bool Step(uint64_t rel_pc, Regs* regs, Memory* process_memory);
 
   ElfInterface* CreateInterfaceFromMemory(Memory* memory);
 
+  uint64_t GetLoadBias();
+
   bool valid() { return valid_; }
 
   uint32_t machine_type() { return machine_type_; }
@@ -65,6 +66,8 @@
 
   ElfInterface* interface() { return interface_.get(); }
 
+  ElfInterface* gnu_debugdata_interface() { return gnu_debugdata_interface_.get(); }
+
   static bool IsValidElf(Memory* memory);
 
  protected:
@@ -73,6 +76,11 @@
   std::unique_ptr<Memory> memory_;
   uint32_t machine_type_;
   uint8_t class_type_;
+
+  std::unique_ptr<Memory> gnu_debugdata_memory_;
+  std::unique_ptr<ElfInterface> gnu_debugdata_interface_;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_ELF_H
diff --git a/libunwindstack/ElfInterface.h b/libunwindstack/include/unwindstack/ElfInterface.h
similarity index 97%
rename from libunwindstack/ElfInterface.h
rename to libunwindstack/include/unwindstack/ElfInterface.h
index d0d0d28..5cac0d3 100644
--- a/libunwindstack/ElfInterface.h
+++ b/libunwindstack/include/unwindstack/ElfInterface.h
@@ -25,7 +25,9 @@
 #include <unordered_map>
 #include <vector>
 
-#include "DwarfSection.h"
+#include <unwindstack/DwarfSection.h>
+
+namespace unwindstack {
 
 // Forward declarations.
 class Memory;
@@ -166,4 +168,6 @@
   }
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_ELF_INTERFACE_H
diff --git a/libunwindstack/Log.h b/libunwindstack/include/unwindstack/Log.h
similarity index 93%
rename from libunwindstack/Log.h
rename to libunwindstack/include/unwindstack/Log.h
index 2d01aa8..aa1219c 100644
--- a/libunwindstack/Log.h
+++ b/libunwindstack/include/unwindstack/Log.h
@@ -19,7 +19,11 @@
 
 #include <stdint.h>
 
+namespace unwindstack {
+
 void log_to_stdout(bool enable);
 void log(uint8_t indent, const char* format, ...);
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_LOG_H
diff --git a/libunwindstack/MapInfo.h b/libunwindstack/include/unwindstack/MapInfo.h
similarity index 95%
rename from libunwindstack/MapInfo.h
rename to libunwindstack/include/unwindstack/MapInfo.h
index 79a2ada..2a97dde 100644
--- a/libunwindstack/MapInfo.h
+++ b/libunwindstack/include/unwindstack/MapInfo.h
@@ -21,6 +21,8 @@
 
 #include <string>
 
+namespace unwindstack {
+
 // Forward declarations.
 class Elf;
 class Memory;
@@ -42,4 +44,6 @@
   Elf* GetElf(pid_t pid, bool init_gnu_debugdata = false);
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_MAP_INFO_H
diff --git a/libunwindstack/Maps.h b/libunwindstack/include/unwindstack/Maps.h
similarity index 96%
rename from libunwindstack/Maps.h
rename to libunwindstack/include/unwindstack/Maps.h
index 239b64a..0b02739 100644
--- a/libunwindstack/Maps.h
+++ b/libunwindstack/include/unwindstack/Maps.h
@@ -23,8 +23,9 @@
 #include <string>
 #include <vector>
 
-#include "Elf.h"
-#include "MapInfo.h"
+#include <unwindstack/MapInfo.h>
+
+namespace unwindstack {
 
 // Special flag to indicate a map is in /dev/. However, a map in
 // /dev/ashmem/... does not set this flag.
@@ -104,4 +105,6 @@
   bool Parse() override;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_MAPS_H
diff --git a/libunwindstack/Memory.h b/libunwindstack/include/unwindstack/Memory.h
similarity index 89%
rename from libunwindstack/Memory.h
rename to libunwindstack/include/unwindstack/Memory.h
index f9f6d56..0c05266 100644
--- a/libunwindstack/Memory.h
+++ b/libunwindstack/include/unwindstack/Memory.h
@@ -17,7 +17,6 @@
 #ifndef _LIBUNWINDSTACK_MEMORY_H
 #define _LIBUNWINDSTACK_MEMORY_H
 
-#include <assert.h>
 #include <stdint.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -25,6 +24,8 @@
 #include <string>
 #include <vector>
 
+namespace unwindstack {
+
 class Memory {
  public:
   Memory() = default;
@@ -46,13 +47,9 @@
     return Read(offset, field, size);
   }
 
-  inline bool Read32(uint64_t addr, uint32_t* dst) {
-    return Read(addr, dst, sizeof(uint32_t));
-  }
+  inline bool Read32(uint64_t addr, uint32_t* dst) { return Read(addr, dst, sizeof(uint32_t)); }
 
-  inline bool Read64(uint64_t addr, uint64_t* dst) {
-    return Read(addr, dst, sizeof(uint64_t));
-  }
+  inline bool Read64(uint64_t addr, uint64_t* dst) { return Read(addr, dst, sizeof(uint64_t)); }
 };
 
 class MemoryBuffer : public Memory {
@@ -128,10 +125,7 @@
 
 class MemoryRange : public Memory {
  public:
-  MemoryRange(Memory* memory, uint64_t begin, uint64_t end)
-      : memory_(memory), begin_(begin), length_(end - begin) {
-    assert(end > begin);
-  }
+  MemoryRange(Memory* memory, uint64_t begin, uint64_t end);
   virtual ~MemoryRange() { delete memory_; }
 
   bool Read(uint64_t addr, void* dst, size_t size) override;
@@ -142,4 +136,6 @@
   uint64_t length_;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_MEMORY_H
diff --git a/libunwindstack/Regs.h b/libunwindstack/include/unwindstack/Regs.h
similarity index 89%
rename from libunwindstack/Regs.h
rename to libunwindstack/include/unwindstack/Regs.h
index 8f5a721..ab98f32 100644
--- a/libunwindstack/Regs.h
+++ b/libunwindstack/include/unwindstack/Regs.h
@@ -21,9 +21,12 @@
 
 #include <vector>
 
+namespace unwindstack {
+
 // Forward declarations.
 class Elf;
 struct MapInfo;
+class Memory;
 
 class Regs {
  public:
@@ -50,14 +53,17 @@
 
   virtual bool GetReturnAddressFromDefault(Memory* memory, uint64_t* value) = 0;
 
-  virtual uint64_t GetRelPc(Elf* elf, const MapInfo* map_info) = 0;
-
   virtual uint64_t GetAdjustedPc(uint64_t rel_pc, Elf* elf) = 0;
 
+  virtual void SetFromRaw() = 0;
+
   uint16_t sp_reg() { return sp_reg_; }
   uint16_t total_regs() { return total_regs_; }
 
+  static uint32_t GetMachineType();
   static Regs* RemoteGet(pid_t pid, uint32_t* machine_type);
+  static Regs* CreateFromUcontext(uint32_t machine_type, void* ucontext);
+  static Regs* CreateFromLocal();
 
  protected:
   uint16_t total_regs_;
@@ -72,8 +78,6 @@
       : Regs(total_regs, sp_reg, return_loc), regs_(total_regs) {}
   virtual ~RegsImpl() = default;
 
-  uint64_t GetRelPc(Elf* elf, const MapInfo* map_info) override;
-
   bool GetReturnAddressFromDefault(Memory* memory, uint64_t* value) override;
 
   uint64_t pc() override { return pc_; }
@@ -98,6 +102,8 @@
   virtual ~RegsArm() = default;
 
   uint64_t GetAdjustedPc(uint64_t rel_pc, Elf* elf) override;
+
+  void SetFromRaw() override;
 };
 
 class RegsArm64 : public RegsImpl<uint64_t> {
@@ -106,6 +112,8 @@
   virtual ~RegsArm64() = default;
 
   uint64_t GetAdjustedPc(uint64_t rel_pc, Elf* elf) override;
+
+  void SetFromRaw() override;
 };
 
 class RegsX86 : public RegsImpl<uint32_t> {
@@ -114,6 +122,8 @@
   virtual ~RegsX86() = default;
 
   uint64_t GetAdjustedPc(uint64_t rel_pc, Elf* elf) override;
+
+  void SetFromRaw() override;
 };
 
 class RegsX86_64 : public RegsImpl<uint64_t> {
@@ -122,6 +132,10 @@
   virtual ~RegsX86_64() = default;
 
   uint64_t GetAdjustedPc(uint64_t rel_pc, Elf* elf) override;
+
+  void SetFromRaw() override;
 };
 
+}  // namespace unwindstack
+
 #endif  // _LIBUNWINDSTACK_REGS_H
diff --git a/libunwindstack/include/unwindstack/RegsGetLocal.h b/libunwindstack/include/unwindstack/RegsGetLocal.h
new file mode 100644
index 0000000..ffec213
--- /dev/null
+++ b/libunwindstack/include/unwindstack/RegsGetLocal.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LIBUNWINDSTACK_REGS_GET_LOCAL_H
+#define _LIBUNWINDSTACK_REGS_GET_LOCAL_H
+
+namespace unwindstack {
+
+#if defined(__arm__)
+
+inline void RegsGetLocal(Regs* regs) {
+  void* reg_data = regs->RawData();
+  asm volatile(
+      ".align 2\n"
+      "bx pc\n"
+      "nop\n"
+      ".code 32\n"
+      "stmia %[base], {r0-r12}\n"
+      "add %[base], #52\n"
+      "mov r1, r13\n"
+      "mov r2, r14\n"
+      "mov r3, r15\n"
+      "stmia %[base], {r1-r3}\n"
+      "orr %[base], pc, #1\n"
+      "bx %[base]\n"
+      : [base] "+r"(reg_data)
+      :
+      : "memory");
+
+  regs->SetFromRaw();
+}
+
+#elif defined(__aarch64__)
+
+inline void RegsGetLocal(Regs* regs) {
+  void* reg_data = regs->RawData();
+  asm volatile(
+      "1:\n"
+      "stp x0, x1, [%[base], #0]\n"
+      "stp x2, x3, [%[base], #16]\n"
+      "stp x4, x5, [%[base], #32]\n"
+      "stp x6, x7, [%[base], #48]\n"
+      "stp x8, x9, [%[base], #64]\n"
+      "stp x10, x11, [%[base], #80]\n"
+      "stp x12, x13, [%[base], #96]\n"
+      "stp x14, x15, [%[base], #112]\n"
+      "stp x16, x17, [%[base], #128]\n"
+      "stp x18, x19, [%[base], #144]\n"
+      "stp x20, x21, [%[base], #160]\n"
+      "stp x22, x23, [%[base], #176]\n"
+      "stp x24, x25, [%[base], #192]\n"
+      "stp x26, x27, [%[base], #208]\n"
+      "stp x28, x29, [%[base], #224]\n"
+      "str x30, [%[base], #240]\n"
+      "mov x12, sp\n"
+      "adr x13, 1b\n"
+      "stp x12, x13, [%[base], #248]\n"
+      : [base] "+r"(reg_data)
+      :
+      : "x12", "x13", "memory");
+
+  regs->SetFromRaw();
+}
+
+#elif defined(__i386__) || defined(__x86_64__)
+
+extern "C" void AsmGetRegs(void* regs);
+
+inline void RegsGetLocal(Regs* regs) {
+  AsmGetRegs(regs->RawData());
+
+  regs->SetFromRaw();
+}
+
+#endif
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_REGS_GET_LOCAL_H
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 4877f36..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 {
@@ -237,9 +239,13 @@
   ASSERT_EQ(0U, value);
 }
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_omit_uint32_t) { ReadEncodedValue_omit<uint32_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_omit_uint32_t) {
+  ReadEncodedValue_omit<uint32_t>();
+}
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_omit_uint64_t) { ReadEncodedValue_omit<uint64_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_omit_uint64_t) {
+  ReadEncodedValue_omit<uint64_t>();
+}
 
 TEST_F(DwarfMemoryTest, ReadEncodedValue_absptr_uint32_t) {
   uint64_t value = 100;
@@ -302,9 +308,13 @@
   ASSERT_EQ(0xffffffffffffe100ULL, value);
 }
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_leb128_uint32_t) { ReadEncodedValue_leb128<uint32_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_leb128_uint32_t) {
+  ReadEncodedValue_leb128<uint32_t>();
+}
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_leb128_uint64_t) { ReadEncodedValue_leb128<uint64_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_leb128_uint64_t) {
+  ReadEncodedValue_leb128<uint64_t>();
+}
 
 template <typename AddressType>
 void DwarfMemoryTest::ReadEncodedValue_data1() {
@@ -319,9 +329,13 @@
   ASSERT_EQ(0xffffffffffffffe0ULL, value);
 }
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data1_uint32_t) { ReadEncodedValue_data1<uint32_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data1_uint32_t) {
+  ReadEncodedValue_data1<uint32_t>();
+}
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data1_uint64_t) { ReadEncodedValue_data1<uint64_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data1_uint64_t) {
+  ReadEncodedValue_data1<uint64_t>();
+}
 
 template <typename AddressType>
 void DwarfMemoryTest::ReadEncodedValue_data2() {
@@ -336,9 +350,13 @@
   ASSERT_EQ(0xffffffffffffe000ULL, value);
 }
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data2_uint32_t) { ReadEncodedValue_data2<uint32_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data2_uint32_t) {
+  ReadEncodedValue_data2<uint32_t>();
+}
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data2_uint64_t) { ReadEncodedValue_data2<uint64_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data2_uint64_t) {
+  ReadEncodedValue_data2<uint64_t>();
+}
 
 template <typename AddressType>
 void DwarfMemoryTest::ReadEncodedValue_data4() {
@@ -353,9 +371,13 @@
   ASSERT_EQ(0xffffffffe0000000ULL, value);
 }
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data4_uint32_t) { ReadEncodedValue_data4<uint32_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data4_uint32_t) {
+  ReadEncodedValue_data4<uint32_t>();
+}
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data4_uint64_t) { ReadEncodedValue_data4<uint64_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data4_uint64_t) {
+  ReadEncodedValue_data4<uint64_t>();
+}
 
 template <typename AddressType>
 void DwarfMemoryTest::ReadEncodedValue_data8() {
@@ -370,9 +392,13 @@
   ASSERT_EQ(0xe000000000000000ULL, value);
 }
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data8_uint32_t) { ReadEncodedValue_data8<uint32_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data8_uint32_t) {
+  ReadEncodedValue_data8<uint32_t>();
+}
 
-TEST_F(DwarfMemoryTest, ReadEncodedValue_data8_uint64_t) { ReadEncodedValue_data8<uint64_t>(); }
+TEST_F(DwarfMemoryTest, ReadEncodedValue_data8_uint64_t) {
+  ReadEncodedValue_data8<uint64_t>();
+}
 
 template <typename AddressType>
 void DwarfMemoryTest::ReadEncodedValue_non_zero_adjust() {
@@ -470,3 +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 25fec8e..72ceb85 100644
--- a/libunwindstack/tests/ElfTest.cpp
+++ b/libunwindstack/tests/ElfTest.cpp
@@ -15,20 +15,24 @@
  */
 
 #include <elf.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 #include <gtest/gtest.h>
 
-#include "Elf.h"
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
 
+#include "ElfTestUtils.h"
 #include "MemoryFake.h"
 
 #if !defined(PT_ARM_EXIDX)
 #define PT_ARM_EXIDX 0x70000001
 #endif
 
-#if !defined(EM_AARCH64)
-#define EM_AARCH64 183
-#endif
+namespace unwindstack {
 
 class ElfTest : public ::testing::Test {
  protected:
@@ -36,35 +40,16 @@
     memory_ = new MemoryFake;
   }
 
-  template <typename Ehdr>
-  void InitEhdr(Ehdr* ehdr) {
-    memset(ehdr, 0, sizeof(Ehdr));
-    memcpy(&ehdr->e_ident[0], ELFMAG, SELFMAG);
-    ehdr->e_ident[EI_DATA] = ELFDATA2LSB;
-    ehdr->e_ident[EI_VERSION] = EV_CURRENT;
-    ehdr->e_ident[EI_OSABI] = ELFOSABI_SYSV;
-  }
-
-  void InitElf32(uint32_t type) {
+  void InitElf32(uint32_t machine_type) {
     Elf32_Ehdr ehdr;
+    TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, machine_type);
 
-    InitEhdr<Elf32_Ehdr>(&ehdr);
-    ehdr.e_ident[EI_CLASS] = ELFCLASS32;
-
-    ehdr.e_type = ET_DYN;
-    ehdr.e_machine = type;
-    ehdr.e_version = EV_CURRENT;
-    ehdr.e_entry = 0;
     ehdr.e_phoff = 0x100;
-    ehdr.e_shoff = 0;
-    ehdr.e_flags = 0;
     ehdr.e_ehsize = sizeof(ehdr);
     ehdr.e_phentsize = sizeof(Elf32_Phdr);
     ehdr.e_phnum = 1;
     ehdr.e_shentsize = sizeof(Elf32_Shdr);
-    ehdr.e_shnum = 0;
-    ehdr.e_shstrndx = 0;
-    if (type == EM_ARM) {
+    if (machine_type == EM_ARM) {
       ehdr.e_flags = 0x5000200;
       ehdr.e_phnum = 2;
     }
@@ -73,16 +58,13 @@
     Elf32_Phdr phdr;
     memset(&phdr, 0, sizeof(phdr));
     phdr.p_type = PT_LOAD;
-    phdr.p_offset = 0;
-    phdr.p_vaddr = 0;
-    phdr.p_paddr = 0;
     phdr.p_filesz = 0x10000;
     phdr.p_memsz = 0x10000;
     phdr.p_flags = PF_R | PF_X;
     phdr.p_align = 0x1000;
     memory_->SetMemory(0x100, &phdr, sizeof(phdr));
 
-    if (type == EM_ARM) {
+    if (machine_type == EM_ARM) {
       memset(&phdr, 0, sizeof(phdr));
       phdr.p_type = PT_ARM_EXIDX;
       phdr.p_offset = 0x30000;
@@ -96,33 +78,21 @@
     }
   }
 
-  void InitElf64(uint32_t type) {
+  void InitElf64(uint32_t machine_type) {
     Elf64_Ehdr ehdr;
+    TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, machine_type);
 
-    InitEhdr<Elf64_Ehdr>(&ehdr);
-    ehdr.e_ident[EI_CLASS] = ELFCLASS64;
-
-    ehdr.e_type = ET_DYN;
-    ehdr.e_machine = type;
-    ehdr.e_version = EV_CURRENT;
-    ehdr.e_entry = 0;
     ehdr.e_phoff = 0x100;
-    ehdr.e_shoff = 0;
     ehdr.e_flags = 0x5000200;
     ehdr.e_ehsize = sizeof(ehdr);
     ehdr.e_phentsize = sizeof(Elf64_Phdr);
     ehdr.e_phnum = 1;
     ehdr.e_shentsize = sizeof(Elf64_Shdr);
-    ehdr.e_shnum = 0;
-    ehdr.e_shstrndx = 0;
     memory_->SetMemory(0, &ehdr, sizeof(ehdr));
 
     Elf64_Phdr phdr;
     memset(&phdr, 0, sizeof(phdr));
     phdr.p_type = PT_LOAD;
-    phdr.p_offset = 0;
-    phdr.p_vaddr = 0;
-    phdr.p_paddr = 0;
     phdr.p_filesz = 0x10000;
     phdr.p_memsz = 0x10000;
     phdr.p_flags = PF_R | PF_X;
@@ -208,3 +178,95 @@
   ASSERT_EQ(ELFCLASS64, elf.class_type());
   ASSERT_TRUE(elf.interface() != nullptr);
 }
+
+TEST_F(ElfTest, gnu_debugdata_init_fail32) {
+  TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(ELFCLASS32, EM_ARM, false,
+                                               [&](uint64_t offset, const void* ptr, size_t size) {
+                                                 memory_->SetMemory(offset, ptr, size);
+                                               });
+
+  Elf elf(memory_);
+  ASSERT_TRUE(elf.Init());
+  ASSERT_TRUE(elf.interface() != nullptr);
+  ASSERT_TRUE(elf.gnu_debugdata_interface() == nullptr);
+  EXPECT_EQ(0x1acU, elf.interface()->gnu_debugdata_offset());
+  EXPECT_EQ(0x100U, elf.interface()->gnu_debugdata_size());
+}
+
+TEST_F(ElfTest, gnu_debugdata_init_fail64) {
+  TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(ELFCLASS64, EM_AARCH64, false,
+                                               [&](uint64_t offset, const void* ptr, size_t size) {
+                                                 memory_->SetMemory(offset, ptr, size);
+                                               });
+
+  Elf elf(memory_);
+  ASSERT_TRUE(elf.Init());
+  ASSERT_TRUE(elf.interface() != nullptr);
+  ASSERT_TRUE(elf.gnu_debugdata_interface() == nullptr);
+  EXPECT_EQ(0x200U, elf.interface()->gnu_debugdata_offset());
+  EXPECT_EQ(0x100U, elf.interface()->gnu_debugdata_size());
+}
+
+TEST_F(ElfTest, gnu_debugdata_init32) {
+  TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(ELFCLASS32, EM_ARM, true,
+                                               [&](uint64_t offset, const void* ptr, size_t size) {
+                                                 memory_->SetMemory(offset, ptr, size);
+                                               });
+
+  Elf elf(memory_);
+  ASSERT_TRUE(elf.Init());
+  ASSERT_TRUE(elf.interface() != nullptr);
+  ASSERT_TRUE(elf.gnu_debugdata_interface() == nullptr);
+  EXPECT_EQ(0x1acU, elf.interface()->gnu_debugdata_offset());
+  EXPECT_EQ(0x8cU, elf.interface()->gnu_debugdata_size());
+
+  elf.InitGnuDebugdata();
+  ASSERT_TRUE(elf.gnu_debugdata_interface() != nullptr);
+}
+
+TEST_F(ElfTest, gnu_debugdata_init64) {
+  TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(ELFCLASS64, EM_AARCH64, true,
+                                               [&](uint64_t offset, const void* ptr, size_t size) {
+                                                 memory_->SetMemory(offset, ptr, size);
+                                               });
+
+  Elf elf(memory_);
+  ASSERT_TRUE(elf.Init());
+  ASSERT_TRUE(elf.interface() != nullptr);
+  ASSERT_TRUE(elf.gnu_debugdata_interface() == nullptr);
+  EXPECT_EQ(0x200U, elf.interface()->gnu_debugdata_offset());
+  EXPECT_EQ(0x90U, elf.interface()->gnu_debugdata_size());
+
+  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
new file mode 100644
index 0000000..069386b
--- /dev/null
+++ b/libunwindstack/tests/ElfTestUtils.cpp
@@ -0,0 +1,142 @@
+/*
+ * 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.
+ */
+
+#include <elf.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <string>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#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));
+  memcpy(&ehdr->e_ident[0], ELFMAG, SELFMAG);
+  ehdr->e_ident[EI_DATA] = ELFDATA2LSB;
+  ehdr->e_ident[EI_VERSION] = EV_CURRENT;
+  ehdr->e_ident[EI_OSABI] = ELFOSABI_SYSV;
+  ehdr->e_ident[EI_CLASS] = elf_class;
+  ehdr->e_type = ET_DYN;
+  ehdr->e_machine = machine_type;
+  ehdr->e_version = EV_CURRENT;
+  ehdr->e_ehsize = sizeof(Ehdr);
+}
+
+static std::string GetTestFileDirectory() {
+  std::string exec(testing::internal::GetArgvs()[0]);
+  auto const value = exec.find_last_of('/');
+  if (value == std::string::npos) {
+    return "tests/files/";
+  }
+  return exec.substr(0, value + 1) + "tests/files/";
+}
+
+template <typename Ehdr, typename Shdr>
+void TestInitGnuDebugdata(uint32_t elf_class, uint32_t machine, bool init_gnu_debugdata,
+                          TestCopyFuncType copy_func) {
+  Ehdr ehdr;
+
+  TestInitEhdr(&ehdr, elf_class, machine);
+
+  uint64_t offset = sizeof(Ehdr);
+  ehdr.e_shoff = offset;
+  ehdr.e_shnum = 3;
+  ehdr.e_shentsize = sizeof(Shdr);
+  ehdr.e_shstrndx = 2;
+  copy_func(0, &ehdr, sizeof(ehdr));
+
+  Shdr shdr;
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_NULL;
+  copy_func(offset, &shdr, sizeof(shdr));
+  offset += ehdr.e_shentsize;
+
+  // Skip this header, it will contain the gnu_debugdata information.
+  uint64_t gnu_offset = offset;
+  offset += ehdr.e_shentsize;
+
+  uint64_t symtab_offset = sizeof(ehdr) + ehdr.e_shnum * ehdr.e_shentsize;
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_name = 1;
+  shdr.sh_type = SHT_STRTAB;
+  shdr.sh_offset = symtab_offset;
+  shdr.sh_size = 0x100;
+  copy_func(offset, &shdr, sizeof(shdr));
+
+  char value = '\0';
+  uint64_t symname_offset = symtab_offset;
+  copy_func(symname_offset, &value, 1);
+  symname_offset++;
+  std::string name(".shstrtab");
+  copy_func(symname_offset, name.c_str(), name.size() + 1);
+  symname_offset += name.size() + 1;
+  name = ".gnu_debugdata";
+  copy_func(symname_offset, name.c_str(), name.size() + 1);
+
+  ssize_t bytes = 0x100;
+  offset = symtab_offset + 0x100;
+  if (init_gnu_debugdata) {
+    // Read in the compressed elf data and copy it in.
+    name = GetTestFileDirectory();
+    if (elf_class == ELFCLASS32) {
+      name += "elf32.xz";
+    } else {
+      name += "elf64.xz";
+    }
+    int fd = TEMP_FAILURE_RETRY(open(name.c_str(), O_RDONLY));
+    ASSERT_NE(-1, fd) << "Cannot open " + name;
+    // Assumes the file is less than 1024 bytes.
+    std::vector<uint8_t> buf(1024);
+    bytes = TEMP_FAILURE_RETRY(read(fd, buf.data(), buf.size()));
+    ASSERT_GT(bytes, 0);
+    // Make sure the file isn't too big.
+    ASSERT_NE(static_cast<size_t>(bytes), buf.size())
+        << "File " + name + " is too big, increase buffer size.";
+    close(fd);
+    buf.resize(bytes);
+    copy_func(offset, buf.data(), buf.size());
+  }
+
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_name = symname_offset - symtab_offset;
+  shdr.sh_addr = offset;
+  shdr.sh_offset = offset;
+  shdr.sh_size = bytes;
+  copy_func(gnu_offset, &shdr, sizeof(shdr));
+}
+
+template void TestInitEhdr<Elf32_Ehdr>(Elf32_Ehdr*, uint32_t, uint32_t);
+template void TestInitEhdr<Elf64_Ehdr>(Elf64_Ehdr*, uint32_t, uint32_t);
+
+template void TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(uint32_t, uint32_t, bool,
+                                                           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
new file mode 100644
index 0000000..6ef00e1
--- /dev/null
+++ b/libunwindstack/tests/ElfTestUtils.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 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_TESTS_ELF_TEST_UTILS_H
+#define _LIBUNWINDSTACK_TESTS_ELF_TEST_UTILS_H
+
+#include <functional>
+
+namespace unwindstack {
+
+typedef std::function<void(uint64_t, const void*, size_t)> TestCopyFuncType;
+
+template <typename Ehdr>
+void TestInitEhdr(Ehdr* ehdr, uint32_t elf_class, uint32_t machine_type);
+
+template <typename Ehdr, typename Shdr>
+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/GenGnuDebugdata.cpp b/libunwindstack/tests/GenGnuDebugdata.cpp
new file mode 100644
index 0000000..2644582
--- /dev/null
+++ b/libunwindstack/tests/GenGnuDebugdata.cpp
@@ -0,0 +1,112 @@
+/*
+ * 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.
+ */
+
+#include <elf.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <string>
+
+#if !defined(EM_AARCH64)
+#define EM_AARCH64 183
+#endif
+
+template <typename Ehdr>
+void InitEhdr(Ehdr* ehdr, uint32_t elf_class, uint32_t machine) {
+  memset(ehdr, 0, sizeof(Ehdr));
+  memcpy(&ehdr->e_ident[0], ELFMAG, SELFMAG);
+  ehdr->e_ident[EI_DATA] = ELFDATA2LSB;
+  ehdr->e_ident[EI_VERSION] = EV_CURRENT;
+  ehdr->e_ident[EI_OSABI] = ELFOSABI_SYSV;
+  ehdr->e_ident[EI_CLASS] = elf_class;
+  ehdr->e_type = ET_DYN;
+  ehdr->e_machine = machine;
+  ehdr->e_version = EV_CURRENT;
+  ehdr->e_ehsize = sizeof(Ehdr);
+}
+
+template <typename Ehdr, typename Shdr>
+void GenElf(Ehdr* ehdr, int fd) {
+  uint64_t offset = sizeof(Ehdr);
+  ehdr->e_shoff = offset;
+  ehdr->e_shnum = 3;
+  ehdr->e_shentsize = sizeof(Shdr);
+  ehdr->e_shstrndx = 2;
+  TEMP_FAILURE_RETRY(write(fd, ehdr, sizeof(Ehdr)));
+
+  Shdr shdr;
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_name = 0;
+  shdr.sh_type = SHT_NULL;
+  TEMP_FAILURE_RETRY(write(fd, &shdr, sizeof(Shdr)));
+  offset += ehdr->e_shentsize;
+
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_PROGBITS;
+  shdr.sh_name = 11;
+  shdr.sh_addr = 0x5000;
+  shdr.sh_offset = 0x5000;
+  shdr.sh_entsize = 0x100;
+  shdr.sh_size = 0x800;
+  TEMP_FAILURE_RETRY(write(fd, &shdr, sizeof(Shdr)));
+  offset += ehdr->e_shentsize;
+
+  memset(&shdr, 0, sizeof(shdr));
+  shdr.sh_type = SHT_STRTAB;
+  shdr.sh_name = 1;
+  shdr.sh_offset = 0x200;
+  shdr.sh_size = 24;
+  TEMP_FAILURE_RETRY(write(fd, &shdr, sizeof(Shdr)));
+
+  // Write out the name entries information.
+  lseek(fd, 0x200, SEEK_SET);
+  std::string name;
+  TEMP_FAILURE_RETRY(write(fd, name.data(), name.size() + 1));
+  name = ".shstrtab";
+  TEMP_FAILURE_RETRY(write(fd, name.data(), name.size() + 1));
+  name = ".debug_frame";
+  TEMP_FAILURE_RETRY(write(fd, name.data(), name.size() + 1));
+}
+
+int main() {
+  int elf32_fd = TEMP_FAILURE_RETRY(open("elf32", O_RDWR | O_CREAT | O_TRUNC | O_CLOEXEC, 0644));
+  if (elf32_fd == -1) {
+    printf("Failed to create elf32: %s\n", strerror(errno));
+    return 1;
+  }
+
+  int elf64_fd = TEMP_FAILURE_RETRY(open("elf64", O_RDWR | O_CREAT | O_TRUNC | O_CLOEXEC, 0644));
+  if (elf64_fd == -1) {
+    printf("Failed to create elf64: %s\n", strerror(errno));
+    return 1;
+  }
+
+  Elf32_Ehdr ehdr32;
+  InitEhdr<Elf32_Ehdr>(&ehdr32, ELFCLASS32, EM_ARM);
+  GenElf<Elf32_Ehdr, Elf32_Shdr>(&ehdr32, elf32_fd);
+  close(elf32_fd);
+
+  Elf64_Ehdr ehdr64;
+  InitEhdr<Elf64_Ehdr>(&ehdr64, ELFCLASS64, EM_AARCH64);
+  GenElf<Elf64_Ehdr, Elf64_Shdr>(&ehdr64, elf64_fd);
+  close(elf64_fd);
+}
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/MapInfoTest.cpp b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
similarity index 84%
rename from libunwindstack/tests/MapInfoTest.cpp
rename to libunwindstack/tests/MapInfoCreateMemoryTest.cpp
index 6e47dc0..9e45e78 100644
--- a/libunwindstack/tests/MapInfoTest.cpp
+++ b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
@@ -30,11 +30,13 @@
 #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>
 
-class MapInfoTest : public ::testing::Test {
+namespace unwindstack {
+
+class MapInfoCreateMemoryTest : public ::testing::Test {
  protected:
   static void SetUpTestCase() {
     std::vector<uint8_t> buffer(1024);
@@ -58,10 +60,10 @@
 
   static TemporaryFile elf_at_100_;
 };
-TemporaryFile MapInfoTest::elf_;
-TemporaryFile MapInfoTest::elf_at_100_;
+TemporaryFile MapInfoCreateMemoryTest::elf_;
+TemporaryFile MapInfoCreateMemoryTest::elf_at_100_;
 
-TEST_F(MapInfoTest, end_le_start) {
+TEST_F(MapInfoCreateMemoryTest, end_le_start) {
   MapInfo info{.start = 0x100, .end = 0x100, .offset = 0, .name = elf_.path};
 
   std::unique_ptr<Memory> memory;
@@ -80,7 +82,7 @@
 
 // Verify that if the offset is non-zero but there is no elf at the offset,
 // that the full file is used.
-TEST_F(MapInfoTest, create_memory_file_backed_non_zero_offset_full_file) {
+TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_full_file) {
   MapInfo info{.start = 0x100, .end = 0x200, .offset = 0x100, .name = elf_.path};
 
   std::unique_ptr<Memory> memory(info.CreateMemory(getpid()));
@@ -100,7 +102,7 @@
 
 // Verify that if the offset is non-zero and there is an elf at that
 // offset, that only part of the file is used.
-TEST_F(MapInfoTest, create_memory_file_backed_non_zero_offset_partial_file) {
+TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_partial_file) {
   MapInfo info{.start = 0x100, .end = 0x200, .offset = 0x100, .name = elf_at_100_.path};
 
   std::unique_ptr<Memory> memory(info.CreateMemory(getpid()));
@@ -119,7 +121,7 @@
 }
 
 // Verify that device file names will never result in Memory object creation.
-TEST_F(MapInfoTest, create_memory_check_device_maps) {
+TEST_F(MapInfoCreateMemoryTest, check_device_maps) {
   // Set up some memory so that a valid local memory object would
   // be returned if the file mapping fails, but the device check is incorrect.
   std::vector<uint8_t> buffer(1024);
@@ -135,7 +137,7 @@
   ASSERT_TRUE(memory.get() == nullptr);
 }
 
-TEST_F(MapInfoTest, create_memory_local_memory) {
+TEST_F(MapInfoCreateMemoryTest, local_memory) {
   // Set up some memory for a valid local memory object.
   std::vector<uint8_t> buffer(1024);
   for (size_t i = 0; i < buffer.size(); i++) {
@@ -160,7 +162,7 @@
   ASSERT_FALSE(memory->Read(read_buffer.size(), read_buffer.data(), 1));
 }
 
-TEST_F(MapInfoTest, create_memory_remote_memory) {
+TEST_F(MapInfoCreateMemoryTest, remote_memory) {
   std::vector<uint8_t> buffer(1024);
   memset(buffer.data(), 0xa, buffer.size());
 
@@ -201,20 +203,7 @@
   ASSERT_TRUE(ptrace(PTRACE_DETACH, pid, 0, 0) == 0);
 
   kill(pid, SIGKILL);
+  ASSERT_EQ(pid, wait(nullptr));
 }
 
-TEST_F(MapInfoTest, get_elf) {
-  // Create a map to use as initialization data.
-  void* map = mmap(nullptr, 1024, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-  ASSERT_NE(MAP_FAILED, map);
-
-  uint64_t start = reinterpret_cast<uint64_t>(map);
-  MapInfo info{.start = start, .end = start + 1024, .offset = 0, .name = ""};
-
-  // The map contains garbage, but this should still produce an elf object.
-  std::unique_ptr<Elf> elf(info.GetElf(getpid(), false));
-  ASSERT_TRUE(elf.get() != nullptr);
-  ASSERT_FALSE(elf->valid());
-
-  ASSERT_EQ(0, munmap(map, 1024));
-}
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/MapInfoGetElfTest.cpp b/libunwindstack/tests/MapInfoGetElfTest.cpp
new file mode 100644
index 0000000..abfa172
--- /dev/null
+++ b/libunwindstack/tests/MapInfoGetElfTest.cpp
@@ -0,0 +1,146 @@
+/*
+ * 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.
+ */
+
+#include <elf.h>
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <memory>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/test_utils.h>
+#include <gtest/gtest.h>
+
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Memory.h>
+
+#include "ElfTestUtils.h"
+
+namespace unwindstack {
+
+class MapInfoGetElfTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    map_ = mmap(nullptr, kMapSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+    ASSERT_NE(MAP_FAILED, map_);
+
+    uint64_t start = reinterpret_cast<uint64_t>(map_);
+    info_.reset(new MapInfo{.start = start, .end = start + 1024, .offset = 0, .name = ""});
+  }
+
+  void TearDown() override { munmap(map_, kMapSize); }
+
+  const size_t kMapSize = 4096;
+
+  void* map_ = nullptr;
+  std::unique_ptr<MapInfo> info_;
+};
+
+TEST_F(MapInfoGetElfTest, invalid) {
+  // The map is empty, but this should still create an invalid elf object.
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_FALSE(elf->valid());
+}
+
+TEST_F(MapInfoGetElfTest, valid32) {
+  Elf32_Ehdr ehdr;
+  TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
+  memcpy(map_, &ehdr, sizeof(ehdr));
+
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_TRUE(elf->valid());
+  EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
+  EXPECT_EQ(ELFCLASS32, elf->class_type());
+}
+
+TEST_F(MapInfoGetElfTest, valid64) {
+  Elf64_Ehdr ehdr;
+  TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, EM_AARCH64);
+  memcpy(map_, &ehdr, sizeof(ehdr));
+
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_TRUE(elf->valid());
+  EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
+  EXPECT_EQ(ELFCLASS64, elf->class_type());
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init32) {
+  TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
+      ELFCLASS32, EM_ARM, false, [&](uint64_t offset, const void* ptr, size_t size) {
+        memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+      });
+
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_TRUE(elf->valid());
+  EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
+  EXPECT_EQ(ELFCLASS32, elf->class_type());
+  EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init64) {
+  TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
+      ELFCLASS64, EM_AARCH64, false, [&](uint64_t offset, const void* ptr, size_t size) {
+        memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+      });
+
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_TRUE(elf->valid());
+  EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
+  EXPECT_EQ(ELFCLASS64, elf->class_type());
+  EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_init32) {
+  TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
+      ELFCLASS32, EM_ARM, true, [&](uint64_t offset, const void* ptr, size_t size) {
+        memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+      });
+
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_TRUE(elf->valid());
+  EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
+  EXPECT_EQ(ELFCLASS32, elf->class_type());
+  EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
+}
+
+TEST_F(MapInfoGetElfTest, gnu_debugdata_init64) {
+  TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
+      ELFCLASS64, EM_AARCH64, true, [&](uint64_t offset, const void* ptr, size_t size) {
+        memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
+      });
+
+  std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
+  ASSERT_TRUE(elf.get() != nullptr);
+  ASSERT_TRUE(elf->valid());
+  EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
+  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/MemoryBuffer.cpp b/libunwindstack/tests/MemoryBufferTest.cpp
similarity index 96%
rename from libunwindstack/tests/MemoryBuffer.cpp
rename to libunwindstack/tests/MemoryBufferTest.cpp
index af3d6b9..50a8a1b 100644
--- a/libunwindstack/tests/MemoryBuffer.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 e48edf7..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() {
@@ -91,6 +93,7 @@
   ASSERT_TRUE(Detach(pid));
 
   kill(pid, SIGKILL);
+  ASSERT_EQ(pid, wait(nullptr));
 }
 
 TEST_F(MemoryRemoteTest, read_fail) {
@@ -131,6 +134,7 @@
   ASSERT_TRUE(Detach(pid));
 
   kill(pid, SIGKILL);
+  ASSERT_EQ(pid, wait(nullptr));
 }
 
 TEST_F(MemoryRemoteTest, read_overflow) {
@@ -160,4 +164,7 @@
   ASSERT_TRUE(Detach(pid));
 
   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 ff030c8..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> {
@@ -28,9 +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 3056373..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; }
@@ -56,7 +58,8 @@
       : RegsImpl<TypeParam>(total_regs, regs_sp, return_loc) {}
   virtual ~RegsTestImpl() = default;
 
-  uint64_t GetAdjustedPc(uint64_t, Elf*) { return 0; }
+  uint64_t GetAdjustedPc(uint64_t, Elf*) override { return 0; }
+  void SetFromRaw() override {}
 };
 
 class RegsTest : public ::testing::Test {
@@ -69,9 +72,6 @@
   }
 
   template <typename AddressType>
-  void regs_rel_pc();
-
-  template <typename AddressType>
   void regs_return_address_register();
 
   ElfInterfaceFake* elf_interface_;
@@ -126,26 +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));
 
@@ -249,18 +229,60 @@
   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));
 }
+
+TEST_F(RegsTest, arm_set_from_raw) {
+  RegsArm arm;
+  uint32_t* regs = reinterpret_cast<uint32_t*>(arm.RawData());
+  regs[13] = 0x100;
+  regs[15] = 0x200;
+  arm.SetFromRaw();
+  EXPECT_EQ(0x100U, arm.sp());
+  EXPECT_EQ(0x200U, arm.pc());
+}
+
+TEST_F(RegsTest, arm64_set_from_raw) {
+  RegsArm64 arm64;
+  uint64_t* regs = reinterpret_cast<uint64_t*>(arm64.RawData());
+  regs[31] = 0xb100000000ULL;
+  regs[32] = 0xc200000000ULL;
+  arm64.SetFromRaw();
+  EXPECT_EQ(0xb100000000U, arm64.sp());
+  EXPECT_EQ(0xc200000000U, arm64.pc());
+}
+
+TEST_F(RegsTest, x86_set_from_raw) {
+  RegsX86 x86;
+  uint32_t* regs = reinterpret_cast<uint32_t*>(x86.RawData());
+  regs[4] = 0x23450000;
+  regs[8] = 0xabcd0000;
+  x86.SetFromRaw();
+  EXPECT_EQ(0x23450000U, x86.sp());
+  EXPECT_EQ(0xabcd0000U, x86.pc());
+}
+
+TEST_F(RegsTest, x86_64_set_from_raw) {
+  RegsX86_64 x86_64;
+  uint64_t* regs = reinterpret_cast<uint64_t*>(x86_64.RawData());
+  regs[7] = 0x1200000000ULL;
+  regs[16] = 0x4900000000ULL;
+  x86_64.SetFromRaw();
+  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
new file mode 100644
index 0000000..72065c9
--- /dev/null
+++ b/libunwindstack/tests/UnwindTest.cpp
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2017 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 <errno.h>
+#include <string.h>
+
+#include <signal.h>
+#include <stdint.h>
+#include <sys/ptrace.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include <gtest/gtest.h>
+
+#include <atomic>
+#include <memory>
+#include <sstream>
+#include <string>
+#include <thread>
+
+#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;
+static std::atomic_bool g_finish(false);
+static std::atomic_uintptr_t g_ucontext;
+
+static void Signal(int, siginfo_t*, void* sigcontext) {
+  g_ucontext = reinterpret_cast<uintptr_t>(sigcontext);
+  while (!g_finish.load()) {
+  }
+}
+
+static std::string ErrorMsg(const char** function_names, size_t index,
+                            std::stringstream& unwind_stream) {
+  return std::string(
+             "Unwind completed without finding all frames\n"
+             "  Looking for function: ") +
+         function_names[index] + "\n" + "Unwind data:\n" + unwind_stream.str();
+}
+
+static void VerifyUnwind(pid_t pid, Memory* memory, Maps* maps, Regs* regs) {
+  const char* function_names[] = {
+      "InnerFunction", "MiddleFunction", "OuterFunction",
+  };
+  size_t function_name_index = 0;
+
+  std::stringstream unwind_stream;
+  unwind_stream << std::hex;
+  for (size_t frame_num = 0; frame_num < 64; frame_num++) {
+    ASSERT_NE(0U, regs->pc()) << ErrorMsg(function_names, function_name_index, unwind_stream);
+    MapInfo* map_info = maps->Find(regs->pc());
+    ASSERT_TRUE(map_info != nullptr) << ErrorMsg(function_names, function_name_index, unwind_stream);
+
+    Elf* elf = map_info->GetElf(pid, true);
+    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);
+    }
+    unwind_stream << "  PC: 0x" << regs->pc() << " Rel: 0x" << adjusted_rel_pc;
+    unwind_stream << " Map: ";
+    if (!map_info->name.empty()) {
+      unwind_stream << map_info->name;
+    } else {
+      unwind_stream << " anonymous";
+    }
+    unwind_stream << "<" << map_info->start << "-" << map_info->end << ">";
+
+    std::string name;
+    uint64_t func_offset;
+    if (elf->GetFunctionName(adjusted_rel_pc, &name, &func_offset)) {
+      if (name == function_names[function_name_index]) {
+        function_name_index++;
+        if (function_name_index == sizeof(function_names) / sizeof(const char*)) {
+          return;
+        }
+      }
+      unwind_stream << " " << name;
+    }
+    unwind_stream << "\n";
+    ASSERT_TRUE(elf->Step(rel_pc + map_info->elf_offset, regs, memory))
+        << ErrorMsg(function_names, function_name_index, unwind_stream);
+  }
+  ASSERT_TRUE(false) << ErrorMsg(function_names, function_name_index, unwind_stream);
+}
+
+// This test assumes that this code is compiled with optimizations turned
+// off. If this doesn't happen, then all of the calls will be optimized
+// away.
+extern "C" void InnerFunction(bool local) {
+  if (local) {
+    LocalMaps maps;
+    ASSERT_TRUE(maps.Parse());
+    std::unique_ptr<Regs> regs(Regs::CreateFromLocal());
+    RegsGetLocal(regs.get());
+    MemoryLocal memory;
+
+    VerifyUnwind(getpid(), &memory, &maps, regs.get());
+  } else {
+    g_ready_for_remote = true;
+    g_ready = true;
+    while (!g_finish.load()) {
+    }
+  }
+}
+
+extern "C" void MiddleFunction(bool local) {
+  InnerFunction(local);
+}
+
+extern "C" void OuterFunction(bool local) {
+  MiddleFunction(local);
+}
+
+TEST(UnwindTest, local) {
+  OuterFunction(true);
+}
+
+TEST(UnwindTest, remote) {
+  pid_t pid;
+  if ((pid = fork()) == 0) {
+    OuterFunction(false);
+    exit(0);
+  }
+  ASSERT_NE(-1, pid);
+
+  bool ready = false;
+  uint64_t addr = reinterpret_cast<uint64_t>(&g_ready_for_remote);
+  for (size_t i = 0; i < 100; i++) {
+    ASSERT_EQ(0, ptrace(PTRACE_ATTACH, pid, 0, 0));
+    for (size_t j = 0; j < 100; j++) {
+      siginfo_t si;
+      if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si) == 0) {
+        // Check to see if process is ready to be unwound.
+        MemoryRemote memory(pid);
+        // Read the remote value to see if we are ready.
+        bool value;
+        if (memory.Read(addr, &value, sizeof(value)) && value) {
+          ready = true;
+          break;
+        }
+      }
+      usleep(1000);
+    }
+    if (ready) {
+      break;
+    }
+    ASSERT_EQ(0, ptrace(PTRACE_DETACH, pid, 0, 0));
+    usleep(1000);
+  }
+  ASSERT_TRUE(read) << "Timed out waiting for remote process to be ready.";
+
+  RemoteMaps maps(pid);
+  ASSERT_TRUE(maps.Parse());
+  MemoryRemote memory(pid);
+  uint32_t machine_type;
+  std::unique_ptr<Regs> regs(Regs::RemoteGet(pid, &machine_type));
+  ASSERT_TRUE(regs.get() != nullptr);
+
+  VerifyUnwind(pid, &memory, &maps, regs.get());
+
+  ASSERT_EQ(0, ptrace(PTRACE_DETACH, pid, 0, 0));
+
+  kill(pid, SIGKILL);
+  ASSERT_EQ(pid, wait(nullptr));
+}
+
+TEST(UnwindTest, from_context) {
+  std::atomic_int tid(0);
+  std::thread thread([&]() {
+    tid = syscall(__NR_gettid);
+    OuterFunction(false);
+  });
+
+  struct sigaction act, oldact;
+  memset(&act, 0, sizeof(act));
+  act.sa_sigaction = Signal;
+  act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
+  ASSERT_EQ(0, sigaction(SIGUSR1, &act, &oldact));
+  // Wait for the tid to get set.
+  for (size_t i = 0; i < 100; i++) {
+    if (tid.load() != 0) {
+      break;
+    }
+    usleep(1000);
+  }
+  ASSERT_NE(0, tid.load());
+  // Portable tgkill method.
+  ASSERT_EQ(0, syscall(__NR_tgkill, getpid(), tid.load(), SIGUSR1)) << "Failed because "
+                                                                    << strerror(errno);
+
+  // Wait for context data.
+  void* ucontext;
+  for (size_t i = 0; i < 2000; i++) {
+    ucontext = reinterpret_cast<void*>(g_ucontext.load());
+    if (ucontext != nullptr) {
+      break;
+    }
+    usleep(1000);
+  }
+  ASSERT_TRUE(ucontext != nullptr) << "Timed out waiting for thread to respond to signal.";
+
+  LocalMaps maps;
+  ASSERT_TRUE(maps.Parse());
+  std::unique_ptr<Regs> regs(Regs::CreateFromUcontext(Regs::GetMachineType(), ucontext));
+  MemoryLocal memory;
+
+  VerifyUnwind(tid.load(), &memory, &maps, regs.get());
+
+  ASSERT_EQ(0, sigaction(SIGUSR1, &oldact, nullptr));
+
+  g_finish = true;
+  thread.join();
+}
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/files/elf32.xz b/libunwindstack/tests/files/elf32.xz
new file mode 100644
index 0000000..f25d433
--- /dev/null
+++ b/libunwindstack/tests/files/elf32.xz
Binary files differ
diff --git a/libunwindstack/tests/files/elf64.xz b/libunwindstack/tests/files/elf64.xz
new file mode 100644
index 0000000..eb1618e
--- /dev/null
+++ b/libunwindstack/tests/files/elf64.xz
Binary files differ
diff --git a/libunwindstack/tools/unwind.cpp b/libunwindstack/tools/unwind.cpp
new file mode 100644
index 0000000..642105a
--- /dev/null
+++ b/libunwindstack/tools/unwind.cpp
@@ -0,0 +1,162 @@
+/*
+ * 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.
+ */
+
+#include <elf.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <string>
+
+#include <unwindstack/Elf.h>
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+
+static bool Attach(pid_t pid) {
+  if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {
+    return false;
+  }
+
+  // Allow at least 1 second to attach properly.
+  for (size_t i = 0; i < 1000; i++) {
+    siginfo_t si;
+    if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si) == 0) {
+      return true;
+    }
+    usleep(1000);
+  }
+  printf("%d: Failed to stop.\n", pid);
+  return false;
+}
+
+static bool Detach(pid_t pid) {
+  return ptrace(PTRACE_DETACH, pid, 0, 0) == 0;
+}
+
+void DoUnwind(pid_t pid) {
+  unwindstack::RemoteMaps remote_maps(pid);
+  if (!remote_maps.Parse()) {
+    printf("Failed to parse map data.\n");
+    return;
+  }
+
+  uint32_t machine_type;
+  unwindstack::Regs* regs = unwindstack::Regs::RemoteGet(pid, &machine_type);
+  if (regs == nullptr) {
+    printf("Unable to get remote reg data\n");
+    return;
+  }
+
+  bool bits32 = true;
+  printf("ABI: ");
+  switch (machine_type) {
+    case EM_ARM:
+      printf("arm");
+      break;
+    case EM_386:
+      printf("x86");
+      break;
+    case EM_AARCH64:
+      printf("arm64");
+      bits32 = false;
+      break;
+    case EM_X86_64:
+      printf("x86_64");
+      bits32 = false;
+      break;
+    default:
+      printf("unknown\n");
+      return;
+  }
+  printf("\n");
+
+  unwindstack::MemoryRemote remote_memory(pid);
+  for (size_t frame_num = 0; frame_num < 64; frame_num++) {
+    if (regs->pc() == 0) {
+      break;
+    }
+    unwindstack::MapInfo* map_info = remote_maps.Find(regs->pc());
+    if (map_info == nullptr) {
+      printf("Failed to find map data for the pc\n");
+      break;
+    }
+
+    unwindstack::Elf* elf = map_info->GetElf(pid, true);
+
+    uint64_t rel_pc = elf->GetRelPc(regs->pc(), map_info);
+    uint64_t adjusted_rel_pc = rel_pc;
+    // Don't need to adjust the first frame pc.
+    if (frame_num != 0) {
+      adjusted_rel_pc = regs->GetAdjustedPc(rel_pc, elf);
+    }
+
+    std::string name;
+    if (bits32) {
+      printf("  #%02zu pc %08" PRIx64, frame_num, adjusted_rel_pc);
+    } else {
+      printf("  #%02zu pc %016" PRIx64, frame_num, adjusted_rel_pc);
+    }
+    if (!map_info->name.empty()) {
+      printf("  %s", map_info->name.c_str());
+      if (map_info->elf_offset != 0) {
+        printf(" (offset 0x%" PRIx64 ")", map_info->elf_offset);
+      }
+    } else {
+      printf("  <anonymous:%" PRIx64 ">", map_info->offset);
+    }
+    uint64_t func_offset;
+    if (elf->GetFunctionName(adjusted_rel_pc, &name, &func_offset)) {
+      printf(" (%s", name.c_str());
+      if (func_offset != 0) {
+        printf("+%" PRId64, func_offset);
+      }
+      printf(")");
+    }
+    printf("\n");
+
+    if (!elf->Step(rel_pc + map_info->elf_offset, regs, &remote_memory)) {
+      break;
+    }
+  }
+}
+
+int main(int argc, char** argv) {
+  if (argc != 2) {
+    printf("Usage: unwind <PID>\n");
+    return 1;
+  }
+
+  pid_t pid = atoi(argv[1]);
+  if (!Attach(pid)) {
+    printf("Failed to attach to pid %d: %s\n", pid, strerror(errno));
+    return 1;
+  }
+
+  DoUnwind(pid);
+
+  Detach(pid);
+
+  return 0;
+}
diff --git a/libunwindstack/tools/unwind_info.cpp b/libunwindstack/tools/unwind_info.cpp
new file mode 100644
index 0000000..66a9439
--- /dev/null
+++ b/libunwindstack/tools/unwind_info.cpp
@@ -0,0 +1,184 @@
+/*
+ * 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.
+ */
+
+#include <elf.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <unwindstack/DwarfSection.h>
+#include <unwindstack/DwarfStructs.h>
+#include <unwindstack/Elf.h>
+#include <unwindstack/ElfInterface.h>
+#include <unwindstack/Log.h>
+
+#include "ArmExidx.h"
+#include "ElfInterfaceArm.h"
+
+namespace unwindstack {
+
+void DumpArm(ElfInterfaceArm* interface) {
+  if (interface == nullptr) {
+    printf("No ARM Unwind Information.\n\n");
+    return;
+  }
+
+  printf("ARM Unwind Information:\n");
+  for (const auto& entry : interface->pt_loads()) {
+    uint64_t load_bias = entry.second.table_offset;
+    printf(" PC Range 0x%" PRIx64 " - 0x%" PRIx64 "\n", entry.second.offset + load_bias,
+           entry.second.table_size + load_bias);
+    for (auto addr : *interface) {
+      std::string name;
+      printf("  PC 0x%" PRIx64, addr + load_bias);
+      uint64_t func_offset;
+      uint64_t pc = addr + load_bias;
+      // This might be a thumb function, so set the low bit.
+      if (interface->GetFunctionName(pc | 1, &name, &func_offset) && !name.empty()) {
+        printf(" <%s>", name.c_str());
+      }
+      printf("\n");
+      uint64_t entry;
+      if (!interface->FindEntry(pc, &entry)) {
+        printf("    Cannot find entry for address.\n");
+        continue;
+      }
+      ArmExidx arm(nullptr, interface->memory(), nullptr);
+      arm.set_log(true);
+      arm.set_log_skip_execution(true);
+      arm.set_log_indent(2);
+      if (!arm.ExtractEntryData(entry)) {
+        if (arm.status() != ARM_STATUS_NO_UNWIND) {
+          printf("    Error trying to extract data.\n");
+        }
+        continue;
+      }
+      if (arm.data()->size() > 0) {
+        if (!arm.Eval() && arm.status() != ARM_STATUS_NO_UNWIND) {
+          printf("      Error trying to evaluate dwarf data.\n");
+        }
+      }
+    }
+  }
+  printf("\n");
+}
+
+void DumpDwarfSection(ElfInterface* interface, DwarfSection* section, uint64_t load_bias) {
+  for (const DwarfFde* fde : *section) {
+    // Sometimes there are entries that have empty length, skip those since
+    // they don't contain any interesting information.
+    if (fde->pc_start == fde->pc_end) {
+      continue;
+    }
+    printf("\n  PC 0x%" PRIx64, fde->pc_start + load_bias);
+    std::string name;
+    uint64_t func_offset;
+    if (interface->GetFunctionName(fde->pc_start + load_bias, &name, &func_offset) &&
+        !name.empty()) {
+      printf(" <%s>", name.c_str());
+    }
+    printf("\n");
+    if (!section->Log(2, UINT64_MAX, load_bias, fde)) {
+      printf("Failed to process cfa information for entry at 0x%" PRIx64 "\n", fde->pc_start);
+    }
+  }
+}
+
+int GetElfInfo(const char* file) {
+  // Send all log messages to stdout.
+  log_to_stdout(true);
+
+  MemoryFileAtOffset* memory = new MemoryFileAtOffset;
+  if (!memory->Init(file, 0)) {
+    // Initializatation failed.
+    printf("Failed to init\n");
+    return 1;
+  }
+
+  Elf elf(memory);
+  if (!elf.Init() || !elf.valid()) {
+    printf("%s is not a valid elf file.\n", file);
+    return 1;
+  }
+
+  ElfInterface* interface = elf.interface();
+  if (elf.machine_type() == EM_ARM) {
+    DumpArm(reinterpret_cast<ElfInterfaceArm*>(interface));
+    printf("\n");
+  }
+
+  if (interface->eh_frame() != nullptr) {
+    printf("eh_frame information:\n");
+    DumpDwarfSection(interface, interface->eh_frame(), interface->load_bias());
+    printf("\n");
+  } else {
+    printf("\nno eh_frame information\n");
+  }
+
+  if (interface->debug_frame() != nullptr) {
+    printf("\ndebug_frame information:\n");
+    DumpDwarfSection(interface, interface->debug_frame(), interface->load_bias());
+    printf("\n");
+  } else {
+    printf("\nno debug_frame information\n");
+  }
+
+  // If there is a gnu_debugdata interface, dump the information for that.
+  ElfInterface* gnu_debugdata_interface = elf.gnu_debugdata_interface();
+  if (gnu_debugdata_interface != nullptr) {
+    if (gnu_debugdata_interface->eh_frame() != nullptr) {
+      printf("\ngnu_debugdata (eh_frame):\n");
+      DumpDwarfSection(gnu_debugdata_interface, gnu_debugdata_interface->eh_frame(), 0);
+      printf("\n");
+    }
+    if (gnu_debugdata_interface->debug_frame() != nullptr) {
+      printf("\ngnu_debugdata (debug_frame):\n");
+      DumpDwarfSection(gnu_debugdata_interface, gnu_debugdata_interface->debug_frame(), 0);
+      printf("\n");
+    }
+  } else {
+    printf("\nno valid gnu_debugdata information\n");
+  }
+
+  return 0;
+}
+
+}  // namespace unwindstack
+
+int main(int argc, char** argv) {
+  if (argc != 2) {
+    printf("Need to pass the name of an elf file to the program.\n");
+    return 1;
+  }
+
+  struct stat st;
+  if (stat(argv[1], &st) == -1) {
+    printf("Cannot stat %s: %s\n", argv[1], strerror(errno));
+    return 1;
+  }
+  if (!S_ISREG(st.st_mode)) {
+    printf("%s is not a regular file.\n", argv[1]);
+    return 1;
+  }
+
+  return unwindstack::GetElfInfo(argv[1]);
+}
diff --git a/libunwindstack/tools/unwind_symbols.cpp b/libunwindstack/tools/unwind_symbols.cpp
new file mode 100644
index 0000000..b757c1e
--- /dev/null
+++ b/libunwindstack/tools/unwind_symbols.cpp
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ */
+
+#include <elf.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <unwindstack/Elf.h>
+#include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
+
+int main(int argc, char** argv) {
+  if (argc != 2) {
+    printf("Need to pass the name of an elf file to the program.\n");
+    return 1;
+  }
+
+  struct stat st;
+  if (stat(argv[1], &st) == -1) {
+    printf("Cannot stat %s: %s\n", argv[1], strerror(errno));
+    return 1;
+  }
+  if (!S_ISREG(st.st_mode)) {
+    printf("%s is not a regular file.\n", argv[1]);
+    return 1;
+  }
+
+  // Send all log messages to stdout.
+  unwindstack::log_to_stdout(true);
+
+  unwindstack::MemoryFileAtOffset* memory = new unwindstack::MemoryFileAtOffset;
+  if (!memory->Init(argv[1], 0)) {
+    printf("Failed to init\n");
+    return 1;
+  }
+
+  unwindstack::Elf elf(memory);
+  if (!elf.Init() || !elf.valid()) {
+    printf("%s is not a valid elf file.\n", argv[1]);
+    return 1;
+  }
+
+  switch (elf.machine_type()) {
+    case EM_ARM:
+      printf("ABI: arm\n");
+      break;
+    case EM_AARCH64:
+      printf("ABI: arm64\n");
+      break;
+    case EM_386:
+      printf("ABI: x86\n");
+      break;
+    case EM_X86_64:
+      printf("ABI: x86_64\n");
+      break;
+    default:
+      printf("ABI: unknown\n");
+      return 1;
+  }
+
+  // This is a crude way to get the symbols in order.
+  std::string name;
+  uint64_t load_bias = elf.interface()->load_bias();
+  for (const auto& entry : elf.interface()->pt_loads()) {
+    uint64_t start = entry.second.offset + load_bias;
+    uint64_t end = entry.second.table_size + load_bias;
+    for (uint64_t addr = start; addr < end; addr += 4) {
+      std::string cur_name;
+      uint64_t func_offset;
+      if (elf.GetFunctionName(addr, &cur_name, &func_offset)) {
+        if (cur_name != name) {
+          printf("<0x%" PRIx64 "> Function: %s\n", addr - func_offset, cur_name.c_str());
+        }
+        name = cur_name;
+      }
+    }
+  }
+
+  return 0;
+}
diff --git a/libunwindstack/unwind_info.cpp b/libunwindstack/unwind_info.cpp
deleted file mode 100644
index 6f158b0..0000000
--- a/libunwindstack/unwind_info.cpp
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * 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.
- */
-
-#include <elf.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include "ArmExidx.h"
-#include "Elf.h"
-#include "ElfInterface.h"
-#include "ElfInterfaceArm.h"
-#include "Log.h"
-
-void DumpArm(ElfInterfaceArm* interface) {
-  if (interface == nullptr) {
-    printf("No ARM Unwind Information.\n\n");
-    return;
-  }
-
-  printf("ARM Unwind Information:\n");
-  for (const auto& entry : interface->pt_loads()) {
-    uint64_t load_bias = entry.second.table_offset;
-    printf(" PC Range 0x%" PRIx64 " - 0x%" PRIx64 "\n", entry.second.offset + load_bias,
-           entry.second.table_size + load_bias);
-    for (auto addr : *interface) {
-      std::string name;
-      printf("  PC 0x%" PRIx64, addr + load_bias);
-      uint64_t func_offset;
-      if (interface->GetFunctionName(addr + load_bias + 1, &name, &func_offset) && !name.empty()) {
-        printf(" <%s>", name.c_str());
-      }
-      printf("\n");
-      uint64_t entry;
-      if (!interface->FindEntry(addr + load_bias, &entry)) {
-        printf("    Cannot find entry for address.\n");
-        continue;
-      }
-      ArmExidx arm(nullptr, interface->memory(), nullptr);
-      arm.set_log(true);
-      arm.set_log_skip_execution(true);
-      arm.set_log_indent(2);
-      if (!arm.ExtractEntryData(entry)) {
-        if (arm.status() != ARM_STATUS_NO_UNWIND) {
-          printf("    Error trying to extract data.\n");
-        }
-        continue;
-      }
-      if (arm.data()->size() > 0) {
-        if (!arm.Eval() && arm.status() != ARM_STATUS_NO_UNWIND) {
-          printf("      Error trying to evaluate dwarf data.\n");
-        }
-      }
-    }
-  }
-  printf("\n");
-}
-
-int main(int argc, char** argv) {
-  if (argc != 2) {
-    printf("Need to pass the name of an elf file to the program.\n");
-    return 1;
-  }
-
-  struct stat st;
-  if (stat(argv[1], &st) == -1) {
-    printf("Cannot stat %s: %s\n", argv[1], strerror(errno));
-    return 1;
-  }
-  if (!S_ISREG(st.st_mode)) {
-    printf("%s is not a regular file.\n", argv[1]);
-    return 1;
-  }
-  if (S_ISDIR(st.st_mode)) {
-    printf("%s is a directory.\n", argv[1]);
-    return 1;
-  }
-
-  // Send all log messages to stdout.
-  log_to_stdout(true);
-
-  MemoryFileAtOffset* memory = new MemoryFileAtOffset;
-  if (!memory->Init(argv[1], 0)) {
-    // Initializatation failed.
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  Elf elf(memory);
-  if (!elf.Init() || !elf.valid()) {
-    printf("%s is not a valid elf file.\n", argv[1]);
-    return 1;
-  }
-
-  ElfInterface* interface = elf.interface();
-  if (elf.machine_type() == EM_ARM) {
-    DumpArm(reinterpret_cast<ElfInterfaceArm*>(interface));
-    printf("\n");
-  }
-
-  return 0;
-}
diff --git a/libutils/Android.bp b/libutils/Android.bp
index 33770ba..fbfb7c2 100644
--- a/libutils/Android.bp
+++ b/libutils/Android.bp
@@ -18,10 +18,12 @@
     host_supported: true,
 
     header_libs: [
+        "liblog_headers",
         "libsystem_headers",
         "libcutils_headers"
     ],
     export_header_lib_headers: [
+        "liblog_headers",
         "libsystem_headers",
         "libcutils_headers"
     ],
@@ -51,7 +53,6 @@
         "FileMap.cpp",
         "JenkinsHash.cpp",
         "LinearTransform.cpp",
-        "Log.cpp",
         "NativeHandle.cpp",
         "Printer.cpp",
         "PropertyMap.cpp",
@@ -76,6 +77,10 @@
     header_libs: ["libutils_headers"],
     export_header_lib_headers: ["libutils_headers"],
 
+    shared_libs: [
+        "liblog",
+    ],
+
     arch: {
         mips: {
             cflags: ["-DALIGN_DOUBLE"],
@@ -97,7 +102,6 @@
                 "libbacktrace",
                 "libcutils",
                 "libdl",
-                "liblog",
             ],
 
             sanitize: {
diff --git a/libutils/Log.cpp b/libutils/Log.cpp
deleted file mode 100644
index bffb56e..0000000
--- a/libutils/Log.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2012 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.
- */
-
-#define LOG_TAG "Log"
-
-#include <utils/Log.h>
-#include <utils/Timers.h>
-
-namespace android {
-
-LogIfSlow::LogIfSlow(const char* tag, android_LogPriority priority,
-        int timeoutMillis, const char* message) :
-        mTag(tag), mPriority(priority), mTimeoutMillis(timeoutMillis), mMessage(message),
-        mStart(systemTime(SYSTEM_TIME_BOOTTIME)) {
-}
-
-LogIfSlow::~LogIfSlow() {
-    int durationMillis = nanoseconds_to_milliseconds(systemTime(SYSTEM_TIME_BOOTTIME) - mStart);
-    if (durationMillis > mTimeoutMillis) {
-        LOG_PRI(mPriority, mTag, "%s: %dms", mMessage, durationMillis);
-    }
-}
-
-} // namespace android
diff --git a/libutils/include/utils/Log.h b/libutils/include/utils/Log.h
index 5276a49..42e03e7 100644
--- a/libutils/include/utils/Log.h
+++ b/libutils/include/utils/Log.h
@@ -1,72 +1,7 @@
-/*
- * Copyright (C) 2005 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.
- */
+// DO NOT INCLUDE ANYTHING NEW IN THIS FILE.
 
-//
-// C/C++ logging functions.  See the logging documentation for API details.
-//
-// We'd like these to be available from C code (in case we import some from
-// somewhere), so this has a C interface.
-//
-// The output will be correct when the log file is shared between multiple
-// threads and/or multiple processes so long as the operating system
-// supports O_APPEND.  These calls have mutex-protected data structures
-// and so are NOT reentrant.  Do not use LOG in a signal handler.
-//
-#ifndef _LIBS_UTILS_LOG_H
-#define _LIBS_UTILS_LOG_H
-
-#include <sys/types.h>
+// <log/log.h> has replaced this file and all changes should go there instead.
+// This path remains strictly to include that header as there are thousands of
+// references to <utils/Log.h> in the tree.
 
 #include <log/log.h>
-
-#ifdef __cplusplus
-
-namespace android {
-
-/*
- * A very simple utility that yells in the log when an operation takes too long.
- */
-class LogIfSlow {
-public:
-    LogIfSlow(const char* tag, android_LogPriority priority,
-            int timeoutMillis, const char* message);
-    ~LogIfSlow();
-
-private:
-    const char* const mTag;
-    const android_LogPriority mPriority;
-    const int mTimeoutMillis;
-    const char* const mMessage;
-    const int64_t mStart;
-};
-
-/*
- * Writes the specified debug log message if this block takes longer than the
- * specified number of milliseconds to run.  Includes the time actually taken.
- *
- * {
- *     ALOGD_IF_SLOW(50, "Excessive delay doing something.");
- *     doSomething();
- * }
- */
-#define ALOGD_IF_SLOW(timeoutMillis, message) \
-    android::LogIfSlow _logIfSlow(LOG_TAG, ANDROID_LOG_DEBUG, timeoutMillis, message);
-
-} // namespace android
-
-#endif // __cplusplus
-
-#endif // _LIBS_UTILS_LOG_H
diff --git a/libziparchive/Android.bp b/libziparchive/Android.bp
index 1084d59..333835c 100644
--- a/libziparchive/Android.bp
+++ b/libziparchive/Android.bp
@@ -50,6 +50,8 @@
         "libbase",
         "liblog",
     ],
+
+    export_include_dirs: ["include"],
 }
 
 cc_library {
diff --git a/libziparchive/entry_name_utils-inl.h b/libziparchive/entry_name_utils-inl.h
index ddbc286..5fc2fb4 100644
--- a/libziparchive/entry_name_utils-inl.h
+++ b/libziparchive/entry_name_utils-inl.h
@@ -55,5 +55,4 @@
   return true;
 }
 
-
 #endif  // LIBZIPARCHIVE_ENTRY_NAME_UTILS_INL_H_
diff --git a/libziparchive/entry_name_utils_test.cc b/libziparchive/entry_name_utils_test.cc
index 20715bb..d83d854 100644
--- a/libziparchive/entry_name_utils_test.cc
+++ b/libziparchive/entry_name_utils_test.cc
@@ -20,44 +20,43 @@
 
 TEST(entry_name_utils, NullChars) {
   // 'A', 'R', '\0', 'S', 'E'
-  const uint8_t zeroes[] = { 0x41, 0x52, 0x00, 0x53, 0x45 };
+  const uint8_t zeroes[] = {0x41, 0x52, 0x00, 0x53, 0x45};
   ASSERT_FALSE(IsValidEntryName(zeroes, sizeof(zeroes)));
 
-  const uint8_t zeroes_continuation_chars[] = { 0xc2, 0xa1, 0xc2, 0x00 };
-  ASSERT_FALSE(IsValidEntryName(zeroes_continuation_chars,
-                                sizeof(zeroes_continuation_chars)));
+  const uint8_t zeroes_continuation_chars[] = {0xc2, 0xa1, 0xc2, 0x00};
+  ASSERT_FALSE(IsValidEntryName(zeroes_continuation_chars, sizeof(zeroes_continuation_chars)));
 }
 
 TEST(entry_name_utils, InvalidSequence) {
   // 0xfe is an invalid start byte
-  const uint8_t invalid[] = { 0x41, 0xfe };
+  const uint8_t invalid[] = {0x41, 0xfe};
   ASSERT_FALSE(IsValidEntryName(invalid, sizeof(invalid)));
 
   // 0x91 is an invalid start byte (it's a valid continuation byte).
-  const uint8_t invalid2[] = { 0x41, 0x91 };
+  const uint8_t invalid2[] = {0x41, 0x91};
   ASSERT_FALSE(IsValidEntryName(invalid2, sizeof(invalid2)));
 }
 
 TEST(entry_name_utils, TruncatedContinuation) {
   // Malayalam script with truncated bytes. There should be 2 bytes
   // after 0xe0
-  const uint8_t truncated[] = { 0xe0, 0xb4, 0x85, 0xe0, 0xb4 };
+  const uint8_t truncated[] = {0xe0, 0xb4, 0x85, 0xe0, 0xb4};
   ASSERT_FALSE(IsValidEntryName(truncated, sizeof(truncated)));
 
   // 0xc2 is the start of a 2 byte sequence that we've subsequently
   // dropped.
-  const uint8_t truncated2[] = { 0xc2, 0xc2, 0xa1 };
+  const uint8_t truncated2[] = {0xc2, 0xc2, 0xa1};
   ASSERT_FALSE(IsValidEntryName(truncated2, sizeof(truncated2)));
 }
 
 TEST(entry_name_utils, BadContinuation) {
   // 0x41 is an invalid continuation char, since it's MSBs
   // aren't "10..." (are 01).
-  const uint8_t bad[] = { 0xc2, 0xa1, 0xc2, 0x41 };
+  const uint8_t bad[] = {0xc2, 0xa1, 0xc2, 0x41};
   ASSERT_FALSE(IsValidEntryName(bad, sizeof(bad)));
 
   // 0x41 is an invalid continuation char, since it's MSBs
   // aren't "10..." (are 11).
-  const uint8_t bad2[] = { 0xc2, 0xa1, 0xc2, 0xfe };
+  const uint8_t bad2[] = {0xc2, 0xa1, 0xc2, 0xfe};
   ASSERT_FALSE(IsValidEntryName(bad2, sizeof(bad2)));
 }
diff --git a/include/ziparchive/zip_archive.h b/libziparchive/include/ziparchive/zip_archive.h
similarity index 90%
rename from include/ziparchive/zip_archive.h
rename to libziparchive/include/ziparchive/zip_archive.h
index ece8693..73ae68d 100644
--- a/include/ziparchive/zip_archive.h
+++ b/libziparchive/include/ziparchive/zip_archive.h
@@ -28,8 +28,8 @@
 
 /* Zip compression methods we support */
 enum {
-  kCompressStored     = 0,        // no compression
-  kCompressDeflated   = 8,        // standard deflate
+  kCompressStored = 0,    // no compression
+  kCompressDeflated = 8,  // standard deflate
 };
 
 struct ZipString {
@@ -44,19 +44,17 @@
   explicit ZipString(const char* entry_name);
 
   bool operator==(const ZipString& rhs) const {
-    return name && (name_length == rhs.name_length) &&
-        (memcmp(name, rhs.name, name_length) == 0);
+    return name && (name_length == rhs.name_length) && (memcmp(name, rhs.name, name_length) == 0);
   }
 
   bool StartsWith(const ZipString& prefix) const {
     return name && (name_length >= prefix.name_length) &&
-        (memcmp(name, prefix.name, prefix.name_length) == 0);
+           (memcmp(name, prefix.name, prefix.name_length) == 0);
   }
 
   bool EndsWith(const ZipString& suffix) const {
     return name && (name_length >= suffix.name_length) &&
-        (memcmp(name + name_length - suffix.name_length, suffix.name,
-                suffix.name_length) == 0);
+           (memcmp(name + name_length - suffix.name_length, suffix.name, suffix.name_length) == 0);
   }
 };
 
@@ -134,11 +132,11 @@
  *
  * Returns 0 on success, and negative values on failure.
  */
-int32_t OpenArchiveFd(const int fd, const char* debugFileName,
-                      ZipArchiveHandle *handle, bool assume_ownership = true);
+int32_t OpenArchiveFd(const int fd, const char* debugFileName, ZipArchiveHandle* handle,
+                      bool assume_ownership = true);
 
 int32_t OpenArchiveFromMemory(void* address, size_t length, const char* debugFileName,
-                              ZipArchiveHandle *handle);
+                              ZipArchiveHandle* handle);
 /*
  * Close archive, releasing resources associated with it. This will
  * unmap the central directory of the zipfile and free all internal
@@ -164,8 +162,7 @@
  * On non-Windows platforms this method does not modify internal state and
  * can be called concurrently.
  */
-int32_t FindEntry(const ZipArchiveHandle handle, const ZipString& entryName,
-                  ZipEntry* data);
+int32_t FindEntry(const ZipArchiveHandle handle, const ZipString& entryName, ZipEntry* data);
 
 /*
  * Start iterating over all entries of a zip file. The order of iteration
@@ -180,8 +177,7 @@
  *
  * Returns 0 on success and negative values on failure.
  */
-int32_t StartIteration(ZipArchiveHandle handle, void** cookie_ptr,
-                       const ZipString* optional_prefix,
+int32_t StartIteration(ZipArchiveHandle handle, void** cookie_ptr, const ZipString* optional_prefix,
                        const ZipString* optional_suffix);
 
 /*
@@ -217,8 +213,7 @@
  *
  * Returns 0 on success and negative values on failure.
  */
-int32_t ExtractToMemory(ZipArchiveHandle handle, ZipEntry* entry,
-                        uint8_t* begin, uint32_t size);
+int32_t ExtractToMemory(ZipArchiveHandle handle, ZipEntry* entry, uint8_t* begin, uint32_t size);
 
 int GetFileDescriptor(const ZipArchiveHandle handle);
 
@@ -230,9 +225,9 @@
 /*
  * Stream the uncompressed data through the supplied function,
  * passing cookie to it each time it gets called.
-*/
+ */
 int32_t ProcessZipEntryContents(ZipArchiveHandle handle, ZipEntry* entry,
-        ProcessZipEntryFunction func, void* cookie);
+                                ProcessZipEntryFunction func, void* cookie);
 #endif
 
 #endif  // LIBZIPARCHIVE_ZIPARCHIVE_H_
diff --git a/include/ziparchive/zip_archive_stream_entry.h b/libziparchive/include/ziparchive/zip_archive_stream_entry.h
similarity index 100%
rename from include/ziparchive/zip_archive_stream_entry.h
rename to libziparchive/include/ziparchive/zip_archive_stream_entry.h
diff --git a/include/ziparchive/zip_writer.h b/libziparchive/include/ziparchive/zip_writer.h
similarity index 96%
rename from include/ziparchive/zip_writer.h
rename to libziparchive/include/ziparchive/zip_writer.h
index 08ead48..c350a27 100644
--- a/include/ziparchive/zip_writer.h
+++ b/libziparchive/include/ziparchive/zip_writer.h
@@ -19,7 +19,6 @@
 
 #include <cstdio>
 #include <ctime>
-#include <zlib.h>
 
 #include <memory>
 #include <string>
@@ -28,6 +27,9 @@
 #include "android-base/macros.h"
 #include "utils/Compat.h"
 
+struct z_stream_s;
+typedef struct z_stream_s z_stream;
+
 /**
  * Writes a Zip file via a stateful interface.
  *
@@ -50,7 +52,7 @@
  *   fclose(file);
  */
 class ZipWriter {
-public:
+ public:
   enum {
     /**
      * Flag to compress the zip entry using deflate.
@@ -120,8 +122,7 @@
   /**
    * Same as StartAlignedEntry(const char*, size_t), but sets a last modified time for the entry.
    */
-  int32_t StartAlignedEntryWithTime(const char* path, size_t flags, time_t time,
-                                    uint32_t alignment);
+  int32_t StartAlignedEntryWithTime(const char* path, size_t flags, time_t time, uint32_t alignment);
 
   /**
    * Writes bytes to the zip file for the previously started zip entry.
@@ -156,7 +157,7 @@
    */
   int32_t Finish();
 
-private:
+ private:
   DISALLOW_COPY_AND_ASSIGN(ZipWriter);
 
   int32_t HandleError(int32_t error_code);
@@ -179,7 +180,7 @@
   std::vector<FileEntry> files_;
   FileEntry current_file_entry_;
 
-  std::unique_ptr<z_stream, void(*)(z_stream*)> z_stream_;
+  std::unique_ptr<z_stream, void (*)(z_stream*)> z_stream_;
   std::vector<uint8_t> buffer_;
 };
 
diff --git a/libziparchive/testdata/bad_filename.zip b/libziparchive/testdata/bad_filename.zip
new file mode 100644
index 0000000..294eaf5
--- /dev/null
+++ b/libziparchive/testdata/bad_filename.zip
Binary files differ
diff --git a/libziparchive/testdata/crash.apk b/libziparchive/testdata/crash.apk
new file mode 100644
index 0000000..d6dd52d
--- /dev/null
+++ b/libziparchive/testdata/crash.apk
Binary files differ
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index efe1096..17c268b 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -115,8 +115,7 @@
  * Convert a ZipEntry to a hash table index, verifying that it's in a
  * valid range.
  */
-static int64_t EntryToIndex(const ZipString* hash_table,
-                            const uint32_t hash_table_size,
+static int64_t EntryToIndex(const ZipString* hash_table, const uint32_t hash_table_size,
                             const ZipString& name) {
   const uint32_t hash = ComputeHash(name);
 
@@ -137,7 +136,7 @@
 /*
  * Add a new entry to the hash table.
  */
-static int32_t AddToHash(ZipString *hash_table, const uint64_t hash_table_size,
+static int32_t AddToHash(ZipString* hash_table, const uint64_t hash_table_size,
                          const ZipString& name) {
   const uint64_t hash = ComputeHash(name);
   uint32_t ent = hash & (hash_table_size - 1);
@@ -161,13 +160,12 @@
 }
 
 static int32_t MapCentralDirectory0(const char* debug_file_name, ZipArchive* archive,
-                                    off64_t file_length, off64_t read_amount,
-                                    uint8_t* scan_buffer) {
+                                    off64_t file_length, off64_t read_amount, uint8_t* scan_buffer) {
   const off64_t search_start = file_length - read_amount;
 
-  if(!archive->mapped_zip.ReadAtOffset(scan_buffer, read_amount, search_start)) {
-    ALOGE("Zip: read %" PRId64 " from offset %" PRId64 " failed",
-          static_cast<int64_t>(read_amount), static_cast<int64_t>(search_start));
+  if (!archive->mapped_zip.ReadAtOffset(scan_buffer, read_amount, search_start)) {
+    ALOGE("Zip: read %" PRId64 " from offset %" PRId64 " failed", static_cast<int64_t>(read_amount),
+          static_cast<int64_t>(search_start));
     return kIoError;
   }
 
@@ -198,8 +196,7 @@
    * Verify that there's no trailing space at the end of the central directory
    * and its comment.
    */
-  const off64_t calculated_length = eocd_offset + sizeof(EocdRecord)
-      + eocd->comment_length;
+  const off64_t calculated_length = eocd_offset + sizeof(EocdRecord) + eocd->comment_length;
   if (calculated_length != file_length) {
     ALOGW("Zip: %" PRId64 " extraneous bytes at the end of the central directory",
           static_cast<int64_t>(file_length - calculated_length));
@@ -212,7 +209,7 @@
    */
   if (static_cast<off64_t>(eocd->cd_start_offset) + eocd->cd_size > eocd_offset) {
     ALOGW("Zip: bad offsets (dir %" PRIu32 ", size %" PRIu32 ", eocd %" PRId64 ")",
-        eocd->cd_start_offset, eocd->cd_size, static_cast<int64_t>(eocd_offset));
+          eocd->cd_start_offset, eocd->cd_size, static_cast<int64_t>(eocd_offset));
 #if defined(__ANDROID__)
     if (eocd->cd_start_offset + eocd->cd_size <= eocd_offset) {
       android_errorWriteLog(0x534e4554, "31251826");
@@ -225,8 +222,8 @@
     return kEmptyArchive;
   }
 
-  ALOGV("+++ num_entries=%" PRIu32 " dir_size=%" PRIu32 " dir_offset=%" PRIu32,
-        eocd->num_records, eocd->cd_size, eocd->cd_start_offset);
+  ALOGV("+++ num_entries=%" PRIu32 " dir_size=%" PRIu32 " dir_offset=%" PRIu32, eocd->num_records,
+        eocd->cd_size, eocd->cd_start_offset);
 
   /*
    * It all looks good.  Create a mapping for the CD, and set the fields
@@ -255,7 +252,6 @@
  *   num_entries
  */
 static int32_t MapCentralDirectory(const char* debug_file_name, ZipArchive* archive) {
-
   // Test file length. We use lseek64 to make sure the file
   // is small enough to be a zip file (Its size must be less than
   // 0xffffffff bytes).
@@ -292,8 +288,8 @@
   }
 
   std::vector<uint8_t> scan_buffer(read_amount);
-  int32_t result = MapCentralDirectory0(debug_file_name, archive, file_length, read_amount,
-                                        scan_buffer.data());
+  int32_t result =
+      MapCentralDirectory0(debug_file_name, archive, file_length, read_amount, scan_buffer.data());
   return result;
 }
 
@@ -314,8 +310,13 @@
    * least one unused entry to avoid an infinite loop during creation.
    */
   archive->hash_table_size = RoundUpPower2(1 + (num_entries * 4) / 3);
-  archive->hash_table = reinterpret_cast<ZipString*>(calloc(archive->hash_table_size,
-      sizeof(ZipString)));
+  archive->hash_table =
+      reinterpret_cast<ZipString*>(calloc(archive->hash_table_size, sizeof(ZipString)));
+  if (archive->hash_table == nullptr) {
+    ALOGW("Zip: unable to allocate the %u-entry hash_table, entry size: %zu",
+          archive->hash_table_size, sizeof(ZipString));
+    return -1;
+  }
 
   /*
    * Walk through the central directory, adding entries to the hash
@@ -324,22 +325,24 @@
   const uint8_t* const cd_end = cd_ptr + cd_length;
   const uint8_t* ptr = cd_ptr;
   for (uint16_t i = 0; i < num_entries; i++) {
-    const CentralDirectoryRecord* cdr =
-        reinterpret_cast<const CentralDirectoryRecord*>(ptr);
-    if (cdr->record_signature != CentralDirectoryRecord::kSignature) {
-      ALOGW("Zip: missed a central dir sig (at %" PRIu16 ")", i);
+    if (ptr > cd_end - sizeof(CentralDirectoryRecord)) {
+      ALOGW("Zip: ran off the end (at %" PRIu16 ")", i);
+#if defined(__ANDROID__)
+      android_errorWriteLog(0x534e4554, "36392138");
+#endif
       return -1;
     }
 
-    if (ptr + sizeof(CentralDirectoryRecord) > cd_end) {
-      ALOGW("Zip: ran off the end (at %" PRIu16 ")", i);
+    const CentralDirectoryRecord* cdr = reinterpret_cast<const CentralDirectoryRecord*>(ptr);
+    if (cdr->record_signature != CentralDirectoryRecord::kSignature) {
+      ALOGW("Zip: missed a central dir sig (at %" PRIu16 ")", i);
       return -1;
     }
 
     const off64_t local_header_offset = cdr->local_file_header_offset;
     if (local_header_offset >= archive->directory_offset) {
       ALOGW("Zip: bad LFH offset %" PRId64 " at entry %" PRIu16,
-          static_cast<int64_t>(local_header_offset), i);
+            static_cast<int64_t>(local_header_offset), i);
       return -1;
     }
 
@@ -348,6 +351,13 @@
     const uint16_t comment_length = cdr->comment_length;
     const uint8_t* file_name = ptr + sizeof(CentralDirectoryRecord);
 
+    if (file_name + file_name_length > cd_end) {
+      ALOGW(
+          "Zip: file name boundary exceeds the central directory range, file_name_length: "
+          "%" PRIx16 ", cd_length: %zu",
+          file_name_length, cd_length);
+      return -1;
+    }
     /* check that file name is valid UTF-8 and doesn't contain NUL (U+0000) characters */
     if (!IsValidEntryName(file_name, file_name_length)) {
       return -1;
@@ -357,8 +367,7 @@
     ZipString entry_name;
     entry_name.name = file_name;
     entry_name.name_length = file_name_length;
-    const int add_result = AddToHash(archive->hash_table,
-        archive->hash_table_size, entry_name);
+    const int add_result = AddToHash(archive->hash_table, archive->hash_table_size, entry_name);
     if (add_result != 0) {
       ALOGW("Zip: Error adding entry to hash table %d", add_result);
       return add_result;
@@ -366,8 +375,7 @@
 
     ptr += sizeof(CentralDirectoryRecord) + file_name_length + extra_length + comment_length;
     if ((ptr - cd_ptr) > static_cast<int64_t>(cd_length)) {
-      ALOGW("Zip: bad CD advance (%tu vs %zu) at entry %" PRIu16,
-          ptr - cd_ptr, cd_length, i);
+      ALOGW("Zip: bad CD advance (%tu vs %zu) at entry %" PRIu16, ptr - cd_ptr, cd_length, i);
       return -1;
     }
   }
@@ -376,8 +384,7 @@
   return 0;
 }
 
-static int32_t OpenArchiveInternal(ZipArchive* archive,
-                                   const char* debug_file_name) {
+static int32_t OpenArchiveInternal(ZipArchive* archive, const char* debug_file_name) {
   int32_t result = -1;
   if ((result = MapCentralDirectory(debug_file_name, archive)) != 0) {
     return result;
@@ -390,8 +397,8 @@
   return 0;
 }
 
-int32_t OpenArchiveFd(int fd, const char* debug_file_name,
-                      ZipArchiveHandle* handle, bool assume_ownership) {
+int32_t OpenArchiveFd(int fd, const char* debug_file_name, ZipArchiveHandle* handle,
+                      bool assume_ownership) {
   ZipArchive* archive = new ZipArchive(fd, assume_ownership);
   *handle = archive;
   return OpenArchiveInternal(archive, debug_file_name);
@@ -411,7 +418,7 @@
 }
 
 int32_t OpenArchiveFromMemory(void* address, size_t length, const char* debug_file_name,
-                              ZipArchiveHandle *handle) {
+                              ZipArchiveHandle* handle) {
   ZipArchive* archive = new ZipArchive(address, length);
   *handle = archive;
   return OpenArchiveInternal(archive, debug_file_name);
@@ -451,8 +458,7 @@
   return 0;
 }
 
-static int32_t FindEntry(const ZipArchive* archive, const int ent,
-                         ZipEntry* data) {
+static int32_t FindEntry(const ZipArchive* archive, const int ent, ZipEntry* data) {
   const uint16_t nameLen = archive->hash_table[ent].name_length;
 
   // Recover the start of the central directory entry from the filename
@@ -470,8 +476,7 @@
     return kInvalidOffset;
   }
 
-  const CentralDirectoryRecord *cdr =
-      reinterpret_cast<const CentralDirectoryRecord*>(ptr);
+  const CentralDirectoryRecord* cdr = reinterpret_cast<const CentralDirectoryRecord*>(ptr);
 
   // The offset of the start of the central directory in the zipfile.
   // We keep this lying around so that we can sanity check all our lengths
@@ -499,15 +504,15 @@
   uint8_t lfh_buf[sizeof(LocalFileHeader)];
   if (!archive->mapped_zip.ReadAtOffset(lfh_buf, sizeof(lfh_buf), local_header_offset)) {
     ALOGW("Zip: failed reading lfh name from offset %" PRId64,
-        static_cast<int64_t>(local_header_offset));
+          static_cast<int64_t>(local_header_offset));
     return kIoError;
   }
 
-  const LocalFileHeader *lfh = reinterpret_cast<const LocalFileHeader*>(lfh_buf);
+  const LocalFileHeader* lfh = reinterpret_cast<const LocalFileHeader*>(lfh_buf);
 
   if (lfh->lfh_signature != LocalFileHeader::kSignature) {
     ALOGW("Zip: didn't find signature at start of lfh, offset=%" PRId64,
-        static_cast<int64_t>(local_header_offset));
+          static_cast<int64_t>(local_header_offset));
     return kInvalidOffset;
   }
 
@@ -536,13 +541,12 @@
   // header agree on the crc, compressed, and uncompressed sizes of the entry.
   if ((lfh->gpb_flags & kGPBDDFlagMask) == 0) {
     data->has_data_descriptor = 0;
-    if (data->compressed_length != lfh->compressed_size
-        || data->uncompressed_length != lfh->uncompressed_size
-        || data->crc32 != lfh->crc32) {
-      ALOGW("Zip: size/crc32 mismatch. expected {%" PRIu32 ", %" PRIu32
-        ", %" PRIx32 "}, was {%" PRIu32 ", %" PRIu32 ", %" PRIx32 "}",
-        data->compressed_length, data->uncompressed_length, data->crc32,
-        lfh->compressed_size, lfh->uncompressed_size, lfh->crc32);
+    if (data->compressed_length != lfh->compressed_size ||
+        data->uncompressed_length != lfh->uncompressed_size || data->crc32 != lfh->crc32) {
+      ALOGW("Zip: size/crc32 mismatch. expected {%" PRIu32 ", %" PRIu32 ", %" PRIx32
+            "}, was {%" PRIu32 ", %" PRIu32 ", %" PRIx32 "}",
+            data->compressed_length, data->uncompressed_length, data->crc32, lfh->compressed_size,
+            lfh->uncompressed_size, lfh->crc32);
       return kInconsistentInformation;
     }
   } else {
@@ -580,8 +584,8 @@
     return kInconsistentInformation;
   }
 
-  const off64_t data_offset = local_header_offset + sizeof(LocalFileHeader)
-      + lfh->file_name_length + lfh->extra_field_length;
+  const off64_t data_offset = local_header_offset + sizeof(LocalFileHeader) +
+                              lfh->file_name_length + lfh->extra_field_length;
   if (data_offset > cd_offset) {
     ALOGW("Zip: bad data offset %" PRId64 " in zip", static_cast<int64_t>(data_offset));
     return kInvalidOffset;
@@ -589,16 +593,17 @@
 
   if (static_cast<off64_t>(data_offset + data->compressed_length) > cd_offset) {
     ALOGW("Zip: bad compressed length in zip (%" PRId64 " + %" PRIu32 " > %" PRId64 ")",
-      static_cast<int64_t>(data_offset), data->compressed_length, static_cast<int64_t>(cd_offset));
+          static_cast<int64_t>(data_offset), data->compressed_length,
+          static_cast<int64_t>(cd_offset));
     return kInvalidOffset;
   }
 
   if (data->method == kCompressStored &&
-    static_cast<off64_t>(data_offset + data->uncompressed_length) > cd_offset) {
-     ALOGW("Zip: bad uncompressed length in zip (%" PRId64 " + %" PRIu32 " > %" PRId64 ")",
-       static_cast<int64_t>(data_offset), data->uncompressed_length,
-       static_cast<int64_t>(cd_offset));
-     return kInvalidOffset;
+      static_cast<off64_t>(data_offset + data->uncompressed_length) > cd_offset) {
+    ALOGW("Zip: bad uncompressed length in zip (%" PRId64 " + %" PRIu32 " > %" PRId64 ")",
+          static_cast<int64_t>(data_offset), data->uncompressed_length,
+          static_cast<int64_t>(cd_offset));
+    return kInvalidOffset;
   }
 
   data->offset = data_offset;
@@ -613,8 +618,7 @@
   ZipString suffix;
   ZipArchive* archive;
 
-  IterationHandle(const ZipString* in_prefix,
-                  const ZipString* in_suffix) {
+  IterationHandle(const ZipString* in_prefix, const ZipString* in_suffix) {
     if (in_prefix) {
       uint8_t* name_copy = new uint8_t[in_prefix->name_length];
       memcpy(name_copy, in_prefix->name, in_prefix->name_length);
@@ -641,8 +645,7 @@
   }
 };
 
-int32_t StartIteration(ZipArchiveHandle handle, void** cookie_ptr,
-                       const ZipString* optional_prefix,
+int32_t StartIteration(ZipArchiveHandle handle, void** cookie_ptr, const ZipString* optional_prefix,
                        const ZipString* optional_suffix) {
   ZipArchive* archive = reinterpret_cast<ZipArchive*>(handle);
 
@@ -655,7 +658,7 @@
   cookie->position = 0;
   cookie->archive = archive;
 
-  *cookie_ptr = cookie ;
+  *cookie_ptr = cookie;
   return 0;
 }
 
@@ -663,16 +666,14 @@
   delete reinterpret_cast<IterationHandle*>(cookie);
 }
 
-int32_t FindEntry(const ZipArchiveHandle handle, const ZipString& entryName,
-                  ZipEntry* data) {
+int32_t FindEntry(const ZipArchiveHandle handle, const ZipString& entryName, ZipEntry* data) {
   const ZipArchive* archive = reinterpret_cast<ZipArchive*>(handle);
   if (entryName.name_length == 0) {
     ALOGW("Zip: Invalid filename %.*s", entryName.name_length, entryName.name);
     return kInvalidEntryName;
   }
 
-  const int64_t ent = EntryToIndex(archive->hash_table,
-    archive->hash_table_size, entryName);
+  const int64_t ent = EntryToIndex(archive->hash_table, archive->hash_table_size, entryName);
 
   if (ent < 0) {
     ALOGV("Zip: Could not find entry %.*s", entryName.name_length, entryName.name);
@@ -700,10 +701,8 @@
 
   for (uint32_t i = currentOffset; i < hash_table_length; ++i) {
     if (hash_table[i].name != NULL &&
-        (handle->prefix.name_length == 0 ||
-         hash_table[i].StartsWith(handle->prefix)) &&
-        (handle->suffix.name_length == 0 ||
-         hash_table[i].EndsWith(handle->suffix))) {
+        (handle->prefix.name_length == 0 || hash_table[i].StartsWith(handle->prefix)) &&
+        (handle->suffix.name_length == 0 || hash_table[i].EndsWith(handle->suffix))) {
       handle->position = (i + 1);
       const int error = FindEntry(archive, i, data);
       if (!error) {
@@ -723,8 +722,10 @@
  public:
   virtual bool Append(uint8_t* buf, size_t buf_size) = 0;
   virtual ~Writer() {}
+
  protected:
   Writer() = default;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(Writer);
 };
@@ -734,14 +735,12 @@
 // the data appended to it.
 class MemoryWriter : public Writer {
  public:
-  MemoryWriter(uint8_t* buf, size_t size) : Writer(),
-      buf_(buf), size_(size), bytes_written_(0) {
-  }
+  MemoryWriter(uint8_t* buf, size_t size) : Writer(), buf_(buf), size_(size), bytes_written_(0) {}
 
   virtual bool Append(uint8_t* buf, size_t buf_size) override {
     if (bytes_written_ + buf_size > size_) {
-      ALOGW("Zip: Unexpected size " ZD " (declared) vs " ZD " (actual)",
-            size_, bytes_written_ + buf_size);
+      ALOGW("Zip: Unexpected size " ZD " (declared) vs " ZD " (actual)", size_,
+            bytes_written_ + buf_size);
       return false;
     }
 
@@ -760,7 +759,6 @@
 // The file will be truncated to the end of the written data.
 class FileWriter : public Writer {
  public:
-
   // Creates a FileWriter for |fd| and prepare to write |entry| to it,
   // guaranteeing that the file descriptor is valid and that there's enough
   // space on the volume to write out the entry completely and that the file
@@ -819,8 +817,8 @@
 
   virtual bool Append(uint8_t* buf, size_t buf_size) override {
     if (total_bytes_written_ + buf_size > declared_length_) {
-      ALOGW("Zip: Unexpected size " ZD " (declared) vs " ZD " (actual)",
-            declared_length_, total_bytes_written_ + buf_size);
+      ALOGW("Zip: Unexpected size " ZD " (declared) vs " ZD " (actual)", declared_length_,
+            total_bytes_written_ + buf_size);
       return false;
     }
 
@@ -833,13 +831,10 @@
 
     return result;
   }
+
  private:
-  FileWriter(const int fd, const size_t declared_length) :
-      Writer(),
-      fd_(fd),
-      declared_length_(declared_length),
-      total_bytes_written_(0) {
-  }
+  FileWriter(const int fd, const size_t declared_length)
+      : Writer(), fd_(fd), declared_length_(declared_length), total_bytes_written_(0) {}
 
   const int fd_;
   const size_t declared_length_;
@@ -882,8 +877,7 @@
   zerr = zlib_inflateInit2(&zstream, -MAX_WBITS);
   if (zerr != Z_OK) {
     if (zerr == Z_VERSION_ERROR) {
-      ALOGE("Installed zlib is not compatible with linked version (%s)",
-        ZLIB_VERSION);
+      ALOGE("Installed zlib is not compatible with linked version (%s)", ZLIB_VERSION);
     } else {
       ALOGW("Call to inflateInit2 failed (zerr=%d)", zerr);
     }
@@ -892,7 +886,7 @@
   }
 
   auto zstream_deleter = [](z_stream* stream) {
-    inflateEnd(stream);  /* free up any allocated structures */
+    inflateEnd(stream); /* free up any allocated structures */
   };
 
   std::unique_ptr<z_stream, decltype(zstream_deleter)> zstream_guard(&zstream, zstream_deleter);
@@ -919,15 +913,13 @@
     /* uncompress the data */
     zerr = inflate(&zstream, Z_NO_FLUSH);
     if (zerr != Z_OK && zerr != Z_STREAM_END) {
-      ALOGW("Zip: inflate zerr=%d (nIn=%p aIn=%u nOut=%p aOut=%u)",
-          zerr, zstream.next_in, zstream.avail_in,
-          zstream.next_out, zstream.avail_out);
+      ALOGW("Zip: inflate zerr=%d (nIn=%p aIn=%u nOut=%p aOut=%u)", zerr, zstream.next_in,
+            zstream.avail_in, zstream.next_out, zstream.avail_out);
       return kZlibError;
     }
 
     /* write when we're full or when we're done */
-    if (zstream.avail_out == 0 ||
-      (zerr == Z_STREAM_END && zstream.avail_out != kBufSize)) {
+    if (zstream.avail_out == 0 || (zerr == Z_STREAM_END && zstream.avail_out != kBufSize)) {
       const size_t write_size = zstream.next_out - &write_buf[0];
       if (!writer->Append(&write_buf[0], write_size)) {
         // The file might have declared a bogus length.
@@ -941,7 +933,7 @@
     }
   } while (zerr == Z_OK);
 
-  assert(zerr == Z_STREAM_END);     /* other errors should've been caught */
+  assert(zerr == Z_STREAM_END); /* other errors should've been caught */
 
   // NOTE: zstream.adler is always set to 0, because we're using the -MAX_WBITS
   // "feature" of zlib to tell it there won't be a zlib file header. zlib
@@ -952,8 +944,8 @@
   *crc_out = crc;
 
   if (zstream.total_out != uncompressed_length || compressed_length != 0) {
-    ALOGW("Zip: size mismatch on inflated file (%lu vs %" PRIu32 ")",
-        zstream.total_out, uncompressed_length);
+    ALOGW("Zip: size mismatch on inflated file (%lu vs %" PRIu32 ")", zstream.total_out,
+          uncompressed_length);
     return kInconsistentInformation;
   }
 
@@ -961,7 +953,7 @@
 }
 
 static int32_t CopyEntryToWriter(MappedZipFile& mapped_zip, const ZipEntry* entry, Writer* writer,
-                                 uint64_t *crc_out) {
+                                 uint64_t* crc_out) {
   static const uint32_t kBufSize = 32768;
   std::vector<uint8_t> buf(kBufSize);
 
@@ -991,8 +983,7 @@
   return 0;
 }
 
-int32_t ExtractToWriter(ZipArchiveHandle handle,
-                        ZipEntry* entry, Writer* writer) {
+int32_t ExtractToWriter(ZipArchiveHandle handle, ZipEntry* entry, Writer* writer) {
   ZipArchive* archive = reinterpret_cast<ZipArchive*>(handle);
   const uint16_t method = entry->method;
   off64_t data_offset = entry->offset;
@@ -1027,14 +1018,12 @@
   return return_value;
 }
 
-int32_t ExtractToMemory(ZipArchiveHandle handle, ZipEntry* entry,
-                        uint8_t* begin, uint32_t size) {
+int32_t ExtractToMemory(ZipArchiveHandle handle, ZipEntry* entry, uint8_t* begin, uint32_t size) {
   std::unique_ptr<Writer> writer(new MemoryWriter(begin, size));
   return ExtractToWriter(handle, entry, writer.get());
 }
 
-int32_t ExtractEntryToFile(ZipArchiveHandle handle,
-                           ZipEntry* entry, int fd) {
+int32_t ExtractEntryToFile(ZipArchiveHandle handle, ZipEntry* entry, int fd) {
   std::unique_ptr<Writer> writer(FileWriter::Create(fd, entry));
   if (writer.get() == nullptr) {
     return kIoError;
@@ -1061,8 +1050,7 @@
   return reinterpret_cast<ZipArchive*>(handle)->mapped_zip.GetFileDescriptor();
 }
 
-ZipString::ZipString(const char* entry_name)
-    : name(reinterpret_cast<const uint8_t*>(entry_name)) {
+ZipString::ZipString(const char* entry_name) : name(reinterpret_cast<const uint8_t*>(entry_name)) {
   size_t len = strlen(entry_name);
   CHECK_LE(len, static_cast<size_t>(UINT16_MAX));
   name_length = static_cast<uint16_t>(len);
@@ -1071,10 +1059,8 @@
 #if !defined(_WIN32)
 class ProcessWriter : public Writer {
  public:
-  ProcessWriter(ProcessZipEntryFunction func, void* cookie) : Writer(),
-    proc_function_(func),
-    cookie_(cookie) {
-  }
+  ProcessWriter(ProcessZipEntryFunction func, void* cookie)
+      : Writer(), proc_function_(func), cookie_(cookie) {}
 
   virtual bool Append(uint8_t* buf, size_t buf_size) override {
     return proc_function_(buf, buf_size, cookie_);
@@ -1091,7 +1077,7 @@
   return ExtractToWriter(handle, entry, &writer);
 }
 
-#endif //!defined(_WIN32)
+#endif  //! defined(_WIN32)
 
 int MappedZipFile::GetFileDescriptor() const {
   if (!has_fd_) {
@@ -1134,8 +1120,7 @@
     return true;
   } else {
     if (offset < 0 || offset > static_cast<off64_t>(data_length_)) {
-      ALOGE("Zip: invalid offset: %" PRId64 ", data length: %" PRId64 "\n" , offset,
-            data_length_);
+      ALOGE("Zip: invalid offset: %" PRId64 ", data length: %" PRId64 "\n", offset, data_length_);
       return false;
     }
 
@@ -1146,7 +1131,7 @@
 
 bool MappedZipFile::ReadData(uint8_t* buffer, size_t read_amount) {
   if (has_fd_) {
-    if(!android::base::ReadFully(fd_, buffer, read_amount)) {
+    if (!android::base::ReadFully(fd_, buffer, read_amount)) {
       ALOGE("Zip: read from %d failed\n", fd_);
       return false;
     }
@@ -1172,7 +1157,6 @@
     return false;
   }
   return ReadData(buf, len);
-
 }
 
 void CentralDirectory::Initialize(void* map_base_ptr, off64_t cd_start_offset, size_t cd_size) {
@@ -1183,13 +1167,13 @@
 bool ZipArchive::InitializeCentralDirectory(const char* debug_file_name, off64_t cd_start_offset,
                                             size_t cd_size) {
   if (mapped_zip.HasFd()) {
-    if (!directory_map->create(debug_file_name, mapped_zip.GetFileDescriptor(),
-                               cd_start_offset, cd_size, true /* read only */)) {
+    if (!directory_map->create(debug_file_name, mapped_zip.GetFileDescriptor(), cd_start_offset,
+                               cd_size, true /* read only */)) {
       return false;
     }
 
     CHECK_EQ(directory_map->getDataLength(), cd_size);
-    central_directory.Initialize(directory_map->getDataPtr(), 0/*offset*/, cd_size);
+    central_directory.Initialize(directory_map->getDataPtr(), 0 /*offset*/, cd_size);
   } else {
     if (mapped_zip.GetBasePtr() == nullptr) {
       ALOGE("Zip: Failed to map central directory, bad mapped_zip base pointer\n");
@@ -1197,9 +1181,10 @@
     }
     if (static_cast<off64_t>(cd_start_offset) + static_cast<off64_t>(cd_size) >
         mapped_zip.GetFileLength()) {
-      ALOGE("Zip: Failed to map central directory, offset exceeds mapped memory region ("
-            "start_offset %"  PRId64 ", cd_size %zu, mapped_region_size %" PRId64 ")",
-            static_cast<int64_t>(cd_start_offset), cd_size, mapped_zip.GetFileLength());
+      ALOGE(
+          "Zip: Failed to map central directory, offset exceeds mapped memory region ("
+          "start_offset %" PRId64 ", cd_size %zu, mapped_region_size %" PRId64 ")",
+          static_cast<int64_t>(cd_start_offset), cd_size, mapped_zip.GetFileLength());
       return false;
     }
 
diff --git a/libziparchive/zip_archive_common.h b/libziparchive/zip_archive_common.h
index bc1ebb4..8b99bde 100644
--- a/libziparchive/zip_archive_common.h
+++ b/libziparchive/zip_archive_common.h
@@ -57,6 +57,7 @@
   uint32_t cd_start_offset;
   // Length of the central directory comment.
   uint16_t comment_length;
+
  private:
   EocdRecord() = default;
   DISALLOW_COPY_AND_ASSIGN(EocdRecord);
@@ -111,6 +112,7 @@
   // The offset to the local file header for this entry, from the
   // beginning of this archive.
   uint32_t local_file_header_offset;
+
  private:
   CentralDirectoryRecord() = default;
   DISALLOW_COPY_AND_ASSIGN(CentralDirectoryRecord);
@@ -149,6 +151,7 @@
   // The length of the extra field info (in bytes). This data
   // will appear immediately after the entry file name.
   uint16_t extra_field_length;
+
  private:
   LocalFileHeader() = default;
   DISALLOW_COPY_AND_ASSIGN(LocalFileHeader);
@@ -164,6 +167,7 @@
   uint32_t compressed_size;
   // Uncompressed size of the entry.
   uint32_t uncompressed_size;
+
  private:
   DataDescriptor() = default;
   DISALLOW_COPY_AND_ASSIGN(DataDescriptor);
diff --git a/libziparchive/zip_archive_private.h b/libziparchive/zip_archive_private.h
index de93ecd..840f1af 100644
--- a/libziparchive/zip_archive_private.h
+++ b/libziparchive/zip_archive_private.h
@@ -92,21 +92,17 @@
 
 class MappedZipFile {
  public:
-  explicit MappedZipFile(const int fd) :
-    has_fd_(true),
-    fd_(fd),
-    base_ptr_(nullptr),
-    data_length_(0),
-    read_pos_(0) {}
+  explicit MappedZipFile(const int fd)
+      : has_fd_(true), fd_(fd), base_ptr_(nullptr), data_length_(0), read_pos_(0) {}
 
-  explicit MappedZipFile(void* address, size_t length) :
-    has_fd_(false),
-    fd_(-1),
-    base_ptr_(address),
-    data_length_(static_cast<off64_t>(length)),
-    read_pos_(0) {}
+  explicit MappedZipFile(void* address, size_t length)
+      : has_fd_(false),
+        fd_(-1),
+        base_ptr_(address),
+        data_length_(static_cast<off64_t>(length)),
+        read_pos_(0) {}
 
-  bool HasFd() const {return has_fd_;}
+  bool HasFd() const { return has_fd_; }
 
   int GetFileDescriptor() const;
 
@@ -137,13 +133,11 @@
 
 class CentralDirectory {
  public:
-  CentralDirectory(void) :
-    base_ptr_(nullptr),
-    length_(0) {}
+  CentralDirectory(void) : base_ptr_(nullptr), length_(0) {}
 
-  const uint8_t* GetBasePtr() const {return base_ptr_;}
+  const uint8_t* GetBasePtr() const { return base_ptr_; }
 
-  size_t GetMapLength() const {return length_;}
+  size_t GetMapLength() const { return length_; }
 
   void Initialize(void* map_base_ptr, off64_t cd_start_offset, size_t cd_size);
 
@@ -172,25 +166,25 @@
   uint32_t hash_table_size;
   ZipString* hash_table;
 
-  ZipArchive(const int fd, bool assume_ownership) :
-    mapped_zip(fd),
-    close_file(assume_ownership),
-    directory_offset(0),
-    central_directory(),
-    directory_map(new android::FileMap()),
-    num_entries(0),
-    hash_table_size(0),
-    hash_table(nullptr) {}
+  ZipArchive(const int fd, bool assume_ownership)
+      : mapped_zip(fd),
+        close_file(assume_ownership),
+        directory_offset(0),
+        central_directory(),
+        directory_map(new android::FileMap()),
+        num_entries(0),
+        hash_table_size(0),
+        hash_table(nullptr) {}
 
-  ZipArchive(void* address, size_t length) :
-    mapped_zip(address, length),
-    close_file(false),
-    directory_offset(0),
-    central_directory(),
-    directory_map(new android::FileMap()),
-    num_entries(0),
-    hash_table_size(0),
-    hash_table(nullptr) {}
+  ZipArchive(void* address, size_t length)
+      : mapped_zip(address, length),
+        close_file(false),
+        directory_offset(0),
+        central_directory(),
+        directory_map(new android::FileMap()),
+        num_entries(0),
+        hash_table_size(0),
+        hash_table(nullptr) {}
 
   ~ZipArchive() {
     if (close_file && mapped_zip.GetFileDescriptor() >= 0) {
@@ -202,7 +196,6 @@
 
   bool InitializeCentralDirectory(const char* debug_file_name, off64_t cd_start_offset,
                                   size_t cd_size);
-
 };
 
 #endif  // LIBZIPARCHIVE_ZIPARCHIVE_PRIVATE_H_
diff --git a/libziparchive/zip_archive_stream_entry.cc b/libziparchive/zip_archive_stream_entry.cc
index 3f336a6..50352ef 100644
--- a/libziparchive/zip_archive_stream_entry.cc
+++ b/libziparchive/zip_archive_stream_entry.cc
@@ -162,8 +162,7 @@
   int zerr = zlib_inflateInit2(&z_stream_, -MAX_WBITS);
   if (zerr != Z_OK) {
     if (zerr == Z_VERSION_ERROR) {
-      ALOGE("Installed zlib is not compatible with linked version (%s)",
-        ZLIB_VERSION);
+      ALOGE("Installed zlib is not compatible with linked version (%s)", ZLIB_VERSION);
     } else {
       ALOGE("Call to inflateInit2 failed (zerr=%d)", zerr);
     }
@@ -193,13 +192,14 @@
 
 bool ZipArchiveStreamEntryCompressed::Verify() {
   return z_stream_init_ && uncompressed_length_ == 0 && compressed_length_ == 0 &&
-      crc32_ == computed_crc32_;
+         crc32_ == computed_crc32_;
 }
 
 const std::vector<uint8_t>* ZipArchiveStreamEntryCompressed::Read() {
   if (z_stream_.avail_out == 0) {
     z_stream_.next_out = out_.data();
-    z_stream_.avail_out = out_.size();;
+    z_stream_.avail_out = out_.size();
+    ;
   }
 
   while (true) {
@@ -226,9 +226,8 @@
 
     int zerr = inflate(&z_stream_, Z_NO_FLUSH);
     if (zerr != Z_OK && zerr != Z_STREAM_END) {
-      ALOGE("inflate zerr=%d (nIn=%p aIn=%u nOut=%p aOut=%u)",
-          zerr, z_stream_.next_in, z_stream_.avail_in,
-          z_stream_.next_out, z_stream_.avail_out);
+      ALOGE("inflate zerr=%d (nIn=%p aIn=%u nOut=%p aOut=%u)", zerr, z_stream_.next_in,
+            z_stream_.avail_in, z_stream_.next_out, z_stream_.avail_out);
       return nullptr;
     }
 
@@ -276,8 +275,8 @@
   return length_ == 0;
 }
 
-ZipArchiveStreamEntry* ZipArchiveStreamEntry::Create(
-    ZipArchiveHandle handle, const ZipEntry& entry) {
+ZipArchiveStreamEntry* ZipArchiveStreamEntry::Create(ZipArchiveHandle handle,
+                                                     const ZipEntry& entry) {
   ZipArchiveStreamEntry* stream = nullptr;
   if (entry.method != kCompressStored) {
     stream = new ZipArchiveStreamEntryCompressed(handle);
@@ -292,8 +291,8 @@
   return stream;
 }
 
-ZipArchiveStreamEntry* ZipArchiveStreamEntry::CreateRaw(
-    ZipArchiveHandle handle, const ZipEntry& entry) {
+ZipArchiveStreamEntry* ZipArchiveStreamEntry::CreateRaw(ZipArchiveHandle handle,
+                                                        const ZipEntry& entry) {
   ZipArchiveStreamEntry* stream = nullptr;
   if (entry.method == kCompressStored) {
     // Not compressed, don't need to do anything special.
diff --git a/libziparchive/zip_archive_test.cc b/libziparchive/zip_archive_test.cc
index 52099c3..dbc14f0 100644
--- a/libziparchive/zip_archive_test.cc
+++ b/libziparchive/zip_archive_test.cc
@@ -40,23 +40,17 @@
 static const std::string kValidZip = "valid.zip";
 static const std::string kLargeZip = "large.zip";
 static const std::string kBadCrcZip = "bad_crc.zip";
+static const std::string kCrashApk = "crash.apk";
+static const std::string kBadFilenameZip = "bad_filename.zip";
 static const std::string kUpdateZip = "dummy-update.zip";
 
-static const std::vector<uint8_t> kATxtContents {
-  'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
-  'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
-  '\n'
-};
+static const std::vector<uint8_t> kATxtContents{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'a',
+                                                'b', 'c', 'd', 'e', 'f', 'g', 'h', '\n'};
 
-static const std::vector<uint8_t> kATxtContentsCompressed {
-  'K', 'L', 'J', 'N', 'I', 'M', 'K', 207, 'H',
-  132, 210, '\\', '\0'
-};
+static const std::vector<uint8_t> kATxtContentsCompressed{'K', 'L', 'J', 'N', 'I',  'M', 'K',
+                                                          207, 'H', 132, 210, '\\', '\0'};
 
-static const std::vector<uint8_t> kBTxtContents {
-  'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
-  '\n'
-};
+static const std::vector<uint8_t> kBTxtContents{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '\n'};
 
 static const std::string kATxtName("a.txt");
 static const std::string kBTxtName("b.txt");
@@ -65,14 +59,12 @@
 static const std::string kLargeCompressTxtName("compress.txt");
 static const std::string kLargeUncompressTxtName("uncompress.txt");
 
-static int32_t OpenArchiveWrapper(const std::string& name,
-                                  ZipArchiveHandle* handle) {
+static int32_t OpenArchiveWrapper(const std::string& name, ZipArchiveHandle* handle) {
   const std::string abs_path = test_data_dir + "/" + name;
   return OpenArchive(abs_path.c_str(), handle);
 }
 
-static void AssertNameEquals(const std::string& name_str,
-                             const ZipString& name) {
+static void AssertNameEquals(const std::string& name_str, const ZipString& name) {
   ASSERT_EQ(name_str.size(), name.name_length);
   ASSERT_EQ(0, memcmp(name_str.c_str(), name.name, name.name_length));
 }
@@ -85,7 +77,15 @@
 TEST(ziparchive, Open) {
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveWrapper(kValidZip, &handle));
+  CloseArchive(handle);
 
+  ASSERT_EQ(-1, OpenArchiveWrapper(kBadFilenameZip, &handle));
+  CloseArchive(handle);
+}
+
+TEST(ziparchive, OutOfBound) {
+  ZipArchiveHandle handle;
+  ASSERT_EQ(-8, OpenArchiveWrapper(kCrashApk, &handle));
   CloseArchive(handle);
 }
 
@@ -335,47 +335,36 @@
 }
 
 static const uint32_t kEmptyEntriesZip[] = {
-      0x04034b50, 0x0000000a, 0x63600000, 0x00004438, 0x00000000, 0x00000000,
-      0x00090000, 0x6d65001c, 0x2e797470, 0x55747874, 0x03000954, 0x52e25c13,
-      0x52e25c24, 0x000b7875, 0x42890401, 0x88040000, 0x50000013, 0x1e02014b,
-      0x00000a03, 0x60000000, 0x00443863, 0x00000000, 0x00000000, 0x09000000,
-      0x00001800, 0x00000000, 0xa0000000, 0x00000081, 0x706d6500, 0x742e7974,
-      0x54557478, 0x13030005, 0x7552e25c, 0x01000b78, 0x00428904, 0x13880400,
-      0x4b500000, 0x00000605, 0x00010000, 0x004f0001, 0x00430000, 0x00000000 };
+    0x04034b50, 0x0000000a, 0x63600000, 0x00004438, 0x00000000, 0x00000000, 0x00090000,
+    0x6d65001c, 0x2e797470, 0x55747874, 0x03000954, 0x52e25c13, 0x52e25c24, 0x000b7875,
+    0x42890401, 0x88040000, 0x50000013, 0x1e02014b, 0x00000a03, 0x60000000, 0x00443863,
+    0x00000000, 0x00000000, 0x09000000, 0x00001800, 0x00000000, 0xa0000000, 0x00000081,
+    0x706d6500, 0x742e7974, 0x54557478, 0x13030005, 0x7552e25c, 0x01000b78, 0x00428904,
+    0x13880400, 0x4b500000, 0x00000605, 0x00010000, 0x004f0001, 0x00430000, 0x00000000};
 
 // This is a zip file containing a single entry (ab.txt) that contains
 // 90072 repetitions of the string "ab\n" and has an uncompressed length
 // of 270216 bytes.
 static const uint16_t kAbZip[] = {
-  0x4b50, 0x0403, 0x0014, 0x0000, 0x0008, 0x51d2, 0x4698, 0xc4b0,
-  0x2cda, 0x011b, 0x0000, 0x1f88, 0x0004, 0x0006, 0x001c, 0x6261,
-  0x742e, 0x7478, 0x5455, 0x0009, 0x7c03, 0x3a09, 0x7c55, 0x3a09,
-  0x7555, 0x0b78, 0x0100, 0x8904, 0x0042, 0x0400, 0x1388, 0x0000,
-  0xc2ed, 0x0d31, 0x0000, 0x030c, 0x7fa0, 0x3b2e, 0x22ff, 0xa2aa,
-  0x841f, 0x45fc, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
-  0x5555, 0x5555, 0x5555, 0x5555, 0xdd55, 0x502c, 0x014b, 0x1e02,
-  0x1403, 0x0000, 0x0800, 0xd200, 0x9851, 0xb046, 0xdac4, 0x1b2c,
-  0x0001, 0x8800, 0x041f, 0x0600, 0x1800, 0x0000, 0x0000, 0x0100,
-  0x0000, 0xa000, 0x0081, 0x0000, 0x6100, 0x2e62, 0x7874, 0x5574,
-  0x0554, 0x0300, 0x097c, 0x553a, 0x7875, 0x000b, 0x0401, 0x4289,
-  0x0000, 0x8804, 0x0013, 0x5000, 0x054b, 0x0006, 0x0000, 0x0100,
-  0x0100, 0x4c00, 0x0000, 0x5b00, 0x0001, 0x0000, 0x0000
-};
+    0x4b50, 0x0403, 0x0014, 0x0000, 0x0008, 0x51d2, 0x4698, 0xc4b0, 0x2cda, 0x011b, 0x0000, 0x1f88,
+    0x0004, 0x0006, 0x001c, 0x6261, 0x742e, 0x7478, 0x5455, 0x0009, 0x7c03, 0x3a09, 0x7c55, 0x3a09,
+    0x7555, 0x0b78, 0x0100, 0x8904, 0x0042, 0x0400, 0x1388, 0x0000, 0xc2ed, 0x0d31, 0x0000, 0x030c,
+    0x7fa0, 0x3b2e, 0x22ff, 0xa2aa, 0x841f, 0x45fc, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555, 0x5555,
+    0x5555, 0x5555, 0x5555, 0x5555, 0xdd55, 0x502c, 0x014b, 0x1e02, 0x1403, 0x0000, 0x0800, 0xd200,
+    0x9851, 0xb046, 0xdac4, 0x1b2c, 0x0001, 0x8800, 0x041f, 0x0600, 0x1800, 0x0000, 0x0000, 0x0100,
+    0x0000, 0xa000, 0x0081, 0x0000, 0x6100, 0x2e62, 0x7874, 0x5574, 0x0554, 0x0300, 0x097c, 0x553a,
+    0x7875, 0x000b, 0x0401, 0x4289, 0x0000, 0x8804, 0x0013, 0x5000, 0x054b, 0x0006, 0x0000, 0x0100,
+    0x0100, 0x4c00, 0x0000, 0x5b00, 0x0001, 0x0000, 0x0000};
 
 static const std::string kAbTxtName("ab.txt");
 static const size_t kAbUncompressedSize = 270216;
@@ -396,7 +385,6 @@
   uint8_t buffer[1];
   ASSERT_EQ(0, ExtractToMemory(handle, &entry, buffer, 1));
 
-
   TemporaryFile tmp_output_file;
   ASSERT_NE(-1, tmp_output_file.fd);
   ASSERT_EQ(0, ExtractEntryToFile(handle, &entry, tmp_output_file.fd));
@@ -410,7 +398,7 @@
   TemporaryFile tmp_file;
   ASSERT_NE(-1, tmp_file.fd);
   ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, reinterpret_cast<const uint8_t*>(kAbZip),
-                         sizeof(kAbZip) - 1));
+                                        sizeof(kAbZip) - 1));
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveFd(tmp_file.fd, "EntryLargerThan32KTest", &handle));
 
@@ -438,8 +426,7 @@
   // the same as the memory buffer we extracted directly to.
   std::vector<uint8_t> file_contents(kAbUncompressedSize);
   ASSERT_EQ(0, lseek64(tmp_output_file.fd, 0, SEEK_SET));
-  ASSERT_TRUE(android::base::ReadFully(tmp_output_file.fd, &file_contents[0],
-                                       file_contents.size()));
+  ASSERT_TRUE(android::base::ReadFully(tmp_output_file.fd, &file_contents[0], file_contents.size()));
   ASSERT_EQ(file_contents, buffer);
 
   for (int i = 0; i < 90072; ++i) {
@@ -455,7 +442,7 @@
   ASSERT_NE(-1, tmp_file.fd);
 
   // Create a file with 8 bytes of random garbage.
-  static const uint8_t trailer[] = { 'A' ,'n', 'd', 'r', 'o', 'i', 'd', 'z' };
+  static const uint8_t trailer[] = {'A', 'n', 'd', 'r', 'o', 'i', 'd', 'z'};
   ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, kEmptyEntriesZip, sizeof(kEmptyEntriesZip)));
   ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, trailer, sizeof(trailer)));
 
@@ -466,7 +453,7 @@
 TEST(ziparchive, ExtractToFile) {
   TemporaryFile tmp_file;
   ASSERT_NE(-1, tmp_file.fd);
-  const uint8_t data[8] = { '1', '2', '3', '4', '5', '6', '7', '8' };
+  const uint8_t data[8] = {'1', '2', '3', '4', '5', '6', '7', '8'};
   const size_t data_size = sizeof(data);
 
   ASSERT_TRUE(android::base::WriteFully(tmp_file.fd, data, data_size));
@@ -480,7 +467,6 @@
   ASSERT_EQ(0, FindEntry(handle, name, &entry));
   ASSERT_EQ(0, ExtractEntryToFile(handle, &entry, tmp_file.fd));
 
-
   // Assert that the first 8 bytes of the file haven't been clobbered.
   uint8_t read_buffer[data_size];
   ASSERT_EQ(0, lseek64(tmp_file.fd, 0, SEEK_SET));
@@ -489,10 +475,9 @@
 
   // Assert that the remainder of the file contains the incompressed data.
   std::vector<uint8_t> uncompressed_data(entry.uncompressed_length);
-  ASSERT_TRUE(android::base::ReadFully(tmp_file.fd, uncompressed_data.data(),
-                                       entry.uncompressed_length));
-  ASSERT_EQ(0, memcmp(&uncompressed_data[0], kATxtContents.data(),
-                      kATxtContents.size()));
+  ASSERT_TRUE(
+      android::base::ReadFully(tmp_file.fd, uncompressed_data.data(), entry.uncompressed_length));
+  ASSERT_EQ(0, memcmp(&uncompressed_data[0], kATxtContents.data(), kATxtContents.size()));
 
   // Assert that the total length of the file is sane
   ASSERT_EQ(static_cast<ssize_t>(data_size + kATxtContents.size()),
@@ -509,7 +494,7 @@
 
   // Memory map the file first and open the archive from the memory region.
   android::FileMap file_map;
-  file_map.create(zip_path.c_str(), fd, 0/*offset*/, sb.st_size, true);
+  file_map.create(zip_path.c_str(), fd, 0 /*offset*/, sb.st_size, true);
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveFromMemory(file_map.getDataPtr(), file_map.getDataLength(),
                                      zip_path.c_str(), &handle));
@@ -525,9 +510,8 @@
 }
 #endif
 
-static void ZipArchiveStreamTest(
-    ZipArchiveHandle& handle, const std::string& entry_name, bool raw,
-    bool verified, ZipEntry* entry, std::vector<uint8_t>* read_data) {
+static void ZipArchiveStreamTest(ZipArchiveHandle& handle, const std::string& entry_name, bool raw,
+                                 bool verified, ZipEntry* entry, std::vector<uint8_t>* read_data) {
   ZipString name;
   SetZipString(&name, entry_name);
   ASSERT_EQ(0, FindEntry(handle, name, entry));
@@ -556,9 +540,9 @@
   ASSERT_EQ(total_size, read_data->size());
 }
 
-static void ZipArchiveStreamTestUsingContents(
-    const std::string& zip_file, const std::string& entry_name,
-    const std::vector<uint8_t>& contents, bool raw) {
+static void ZipArchiveStreamTestUsingContents(const std::string& zip_file,
+                                              const std::string& entry_name,
+                                              const std::vector<uint8_t>& contents, bool raw) {
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveWrapper(zip_file, &handle));
 
@@ -572,7 +556,8 @@
   CloseArchive(handle);
 }
 
-static void ZipArchiveStreamTestUsingMemory(const std::string& zip_file, const std::string& entry_name) {
+static void ZipArchiveStreamTestUsingMemory(const std::string& zip_file,
+                                            const std::string& entry_name) {
   ZipArchiveHandle handle;
   ASSERT_EQ(0, OpenArchiveWrapper(zip_file, &handle));
 
@@ -735,10 +720,8 @@
 int main(int argc, char** argv) {
   ::testing::InitGoogleTest(&argc, argv);
 
-  static struct option options[] = {
-    { "test_data_dir", required_argument, nullptr, 't' },
-    { nullptr, 0, nullptr, 0 }
-  };
+  static struct option options[] = {{"test_data_dir", required_argument, nullptr, 't'},
+                                    {nullptr, 0, nullptr, 0}};
 
   while (true) {
     int option_index;
diff --git a/libziparchive/zip_writer.cc b/libziparchive/zip_writer.cc
index 6d28bdb..6ad3366 100644
--- a/libziparchive/zip_writer.cc
+++ b/libziparchive/zip_writer.cc
@@ -16,11 +16,11 @@
 
 #include "ziparchive/zip_writer.h"
 
-#include <cstdio>
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <zlib.h>
-#define DEF_MEM_LEVEL 8                // normally in zutil.h?
+#include <cstdio>
+#define DEF_MEM_LEVEL 8  // normally in zutil.h?
 
 #include <memory>
 #include <vector>
@@ -33,13 +33,13 @@
 #include "zip_archive_common.h"
 
 #if !defined(powerof2)
-#define powerof2(x) ((((x)-1)&(x))==0)
+#define powerof2(x) ((((x)-1) & (x)) == 0)
 #endif
 
 /* Zip compression methods we support */
 enum {
-  kCompressStored     = 0,        // no compression
-  kCompressDeflated   = 8,        // standard deflate
+  kCompressStored = 0,    // no compression
+  kCompressDeflated = 8,  // standard deflate
 };
 
 // Size of the output buffer used for compression.
@@ -67,10 +67,7 @@
 static const int32_t kInvalidAlignment = -6;
 
 static const char* sErrorCodes[] = {
-    "Invalid state",
-    "IO error",
-    "Invalid entry name",
-    "Zlib error",
+    "Invalid state", "IO error", "Invalid entry name", "Zlib error",
 };
 
 const char* ZipWriter::ErrorCodeString(int32_t error_code) {
@@ -85,9 +82,13 @@
   delete stream;
 }
 
-ZipWriter::ZipWriter(FILE* f) : file_(f), seekable_(false), current_offset_(0),
-                                state_(State::kWritingZip), z_stream_(nullptr, DeleteZStream),
-                                buffer_(kBufSize) {
+ZipWriter::ZipWriter(FILE* f)
+    : file_(f),
+      seekable_(false),
+      current_offset_(0),
+      state_(State::kWritingZip),
+      z_stream_(nullptr, DeleteZStream),
+      buffer_(kBufSize) {
   // Check if the file is seekable (regular file). If fstat fails, that's fine, subsequent calls
   // will fail as well.
   struct stat file_stats;
@@ -96,13 +97,14 @@
   }
 }
 
-ZipWriter::ZipWriter(ZipWriter&& writer) : file_(writer.file_),
-                                           seekable_(writer.seekable_),
-                                           current_offset_(writer.current_offset_),
-                                           state_(writer.state_),
-                                           files_(std::move(writer.files_)),
-                                           z_stream_(std::move(writer.z_stream_)),
-                                           buffer_(std::move(writer.buffer_)){
+ZipWriter::ZipWriter(ZipWriter&& writer)
+    : file_(writer.file_),
+      seekable_(writer.seekable_),
+      current_offset_(writer.current_offset_),
+      state_(writer.state_),
+      files_(std::move(writer.files_)),
+      z_stream_(std::move(writer.z_stream_)),
+      buffer_(std::move(writer.buffer_)) {
   writer.file_ = nullptr;
   writer.state_ = State::kError;
 }
@@ -154,10 +156,10 @@
 
   struct tm* ptm;
 #if !defined(_WIN32)
-    struct tm tm_result;
-    ptm = localtime_r(&when, &tm_result);
+  struct tm tm_result;
+  ptm = localtime_r(&when, &tm_result);
 #else
-    ptm = localtime(&when);
+  ptm = localtime(&when);
 #endif
 
   int year = ptm->tm_year;
@@ -193,8 +195,8 @@
   dst->extra_field_length = src.padding_length;
 }
 
-int32_t ZipWriter::StartAlignedEntryWithTime(const char* path, size_t flags,
-                                             time_t time, uint32_t alignment) {
+int32_t ZipWriter::StartAlignedEntryWithTime(const char* path, size_t flags, time_t time,
+                                             uint32_t alignment) {
   if (state_ != State::kWritingZip) {
     return kInvalidState;
   }
@@ -252,9 +254,8 @@
     return HandleError(kIoError);
   }
 
-  if (file_entry.padding_length != 0 &&
-      fwrite(zero_padding.data(), 1, file_entry.padding_length, file_)
-      != file_entry.padding_length) {
+  if (file_entry.padding_length != 0 && fwrite(zero_padding.data(), 1, file_entry.padding_length,
+                                               file_) != file_entry.padding_length) {
     return HandleError(kIoError);
   }
 
@@ -292,7 +293,7 @@
   CHECK(state_ == State::kWritingZip);
 
   // Initialize the z_stream for compression.
-  z_stream_ = std::unique_ptr<z_stream, void(*)(z_stream*)>(new z_stream(), DeleteZStream);
+  z_stream_ = std::unique_ptr<z_stream, void (*)(z_stream*)>(new z_stream(), DeleteZStream);
 
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wold-style-cast"
@@ -331,8 +332,8 @@
     return result;
   }
 
-  current_file_entry_.crc32 = crc32(current_file_entry_.crc32,
-                                    reinterpret_cast<const Bytef*>(data), len);
+  current_file_entry_.crc32 =
+      crc32(current_file_entry_.crc32, reinterpret_cast<const Bytef*>(data), len);
   current_file_entry_.uncompressed_size += len;
   return kNoError;
 }
diff --git a/libziparchive/zip_writer_test.cc b/libziparchive/zip_writer_test.cc
index 9ad0252..c284273 100644
--- a/libziparchive/zip_writer_test.cc
+++ b/libziparchive/zip_writer_test.cc
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#include "ziparchive/zip_archive.h"
 #include "ziparchive/zip_writer.h"
+#include "ziparchive/zip_archive.h"
 
 #include <android-base/test_utils.h>
 #include <gtest/gtest.h>
@@ -361,7 +361,7 @@
 
   ASSERT_EQ(0, writer.StartEntry("large.txt", 0));
   std::vector<uint8_t> data;
-  data.resize(1024*1024, 0xef);
+  data.resize(1024 * 1024, 0xef);
   ASSERT_EQ(0, writer.WriteBytes(data.data(), data.size()));
   ASSERT_EQ(0, writer.FinishEntry());
 
@@ -382,8 +382,9 @@
                                                             ZipArchiveHandle handle,
                                                             ZipEntry* zip_entry) {
   if (expected.size() != zip_entry->uncompressed_length) {
-    return ::testing::AssertionFailure() << "uncompressed entry size "
-        << zip_entry->uncompressed_length << " does not match expected size " << expected.size();
+    return ::testing::AssertionFailure()
+           << "uncompressed entry size " << zip_entry->uncompressed_length
+           << " does not match expected size " << expected.size();
   }
 
   std::string actual;
@@ -396,7 +397,7 @@
 
   if (expected != actual) {
     return ::testing::AssertionFailure() << "actual zip_entry data '" << actual
-        << "' does not match expected '" << expected << "'";
+                                         << "' does not match expected '" << expected << "'";
   }
   return ::testing::AssertionSuccess();
 }
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index e9ef9cc..f64196f 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -1638,7 +1638,7 @@
                 logcat_panic(context, HELP_FALSE, "read: unexpected length.\n");
                 break;
             }
-            logcat_panic(context, HELP_FALSE, "logcat read failure");
+            logcat_panic(context, HELP_FALSE, "logcat read failure\n");
             break;
         }
 
diff --git a/logd/Android.bp b/logd/Android.bp
new file mode 100644
index 0000000..68b79d3
--- /dev/null
+++ b/logd/Android.bp
@@ -0,0 +1,78 @@
+// Copyright (C) 2017 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.
+
+// This is what we want to do:
+//  event_logtags = $(shell
+//    sed -n
+//        "s/^\([0-9]*\)[ \t]*$1[ \t].*/-D`echo $1 | tr a-z A-Z`_LOG_TAG=\1/p"
+//        $(LOCAL_PATH)/$2/event.logtags)
+//  event_flag := $(call event_logtags,auditd)
+//  event_flag += $(call event_logtags,logd)
+//  event_flag += $(call event_logtags,tag_def)
+// so make sure we do not regret hard-coding it as follows:
+event_flag = [
+    "-DAUDITD_LOG_TAG=1003",
+    "-DCHATTY_LOG_TAG=1004",
+    "-DTAG_DEF_LOG_TAG=1005",
+    "-DLIBLOG_LOG_TAG=1006"
+]
+
+cc_library_static {
+    name: "liblogd",
+
+    srcs: [
+        "LogCommand.cpp",
+        "CommandListener.cpp",
+        "LogListener.cpp",
+        "LogReader.cpp",
+        "FlushCommand.cpp",
+        "LogBuffer.cpp",
+        "LogBufferElement.cpp",
+        "LogBufferInterface.cpp",
+        "LogTimes.cpp",
+        "LogStatistics.cpp",
+        "LogWhiteBlackList.cpp",
+        "libaudit.c",
+        "LogAudit.cpp",
+        "LogKlog.cpp",
+        "LogTags.cpp",
+    ],
+    logtags: ["event.logtags"],
+
+    shared_libs: ["libbase"],
+
+    export_include_dirs: ["."],
+
+    cflags: ["-Werror"] + event_flag,
+}
+
+cc_binary {
+    name: "logd",
+    init_rc: ["logd.rc"],
+
+    srcs: ["main.cpp"],
+
+    static_libs: ["liblogd"],
+
+    shared_libs: [
+        "libsysutils",
+        "liblog",
+        "libcutils",
+        "libbase",
+        "libpackagelistparser",
+        "libcap",
+    ],
+
+    cflags: ["-Werror"],
+}
diff --git a/logd/Android.mk b/logd/Android.mk
index fb51992..1bca891 100644
--- a/logd/Android.mk
+++ b/logd/Android.mk
@@ -2,73 +2,6 @@
 
 include $(CLEAR_VARS)
 
-LOCAL_MODULE:= liblogd
-
-LOCAL_SRC_FILES := \
-    LogCommand.cpp \
-    CommandListener.cpp \
-    LogListener.cpp \
-    LogReader.cpp \
-    FlushCommand.cpp \
-    LogBuffer.cpp \
-    LogBufferElement.cpp \
-    LogBufferInterface.cpp \
-    LogTimes.cpp \
-    LogStatistics.cpp \
-    LogWhiteBlackList.cpp \
-    libaudit.c \
-    LogAudit.cpp \
-    LogKlog.cpp \
-    LogTags.cpp \
-    event.logtags
-
-LOCAL_SHARED_LIBRARIES := \
-    libbase
-
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
-
-# This is what we want to do:
-#  event_logtags = $(shell \
-#    sed -n \
-#        "s/^\([0-9]*\)[ \t]*$1[ \t].*/-D`echo $1 | tr a-z A-Z`_LOG_TAG=\1/p" \
-#        $(LOCAL_PATH)/$2/event.logtags)
-#  event_flag := $(call event_logtags,auditd)
-#  event_flag += $(call event_logtags,logd)
-#  event_flag += $(call event_logtags,tag_def)
-# so make sure we do not regret hard-coding it as follows:
-event_flag := -DAUDITD_LOG_TAG=1003 -DCHATTY_LOG_TAG=1004 -DTAG_DEF_LOG_TAG=1005
-event_flag += -DLIBLOG_LOG_TAG=1006
-
-LOCAL_CFLAGS := -Werror $(event_flag)
-
-include $(BUILD_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE:= logd
-
-LOCAL_INIT_RC := logd.rc
-
-LOCAL_SRC_FILES := \
-    main.cpp
-
-LOCAL_STATIC_LIBRARIES := \
-    liblogd
-
-LOCAL_SHARED_LIBRARIES := \
-    libsysutils \
-    liblog \
-    libcutils \
-    libbase \
-    libpackagelistparser \
-    libcap
-
-LOCAL_CFLAGS := -Werror
-
-include $(BUILD_EXECUTABLE)
-
-include $(CLEAR_VARS)
-
 LOCAL_MODULE := logtagd.rc
 LOCAL_SRC_FILES := $(LOCAL_MODULE)
 LOCAL_MODULE_CLASS := ETC
diff --git a/rootdir/init.rc b/rootdir/init.rc
index d9fe090..9301743 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -36,6 +36,8 @@
     mount cgroup none /dev/memcg memory
     # app mem cgroups, used by activity manager, lmkd and zygote
     mkdir /dev/memcg/apps/ 0755 system system
+    # cgroup for system_server and surfaceflinger
+    mkdir /dev/memcg/system 0550 system system
 
     start ueventd
 
@@ -374,6 +376,20 @@
 
     # create basic filesystem structure
     mkdir /data/misc 01771 system misc
+    mkdir /data/misc/recovery 0770 system log
+    copy /data/misc/recovery/default.prop /data/misc/recovery/default.prop.1
+    chmod 0440 /data/misc/recovery/default.prop.1
+    chown system log /data/misc/recovery/default.prop.1
+    copy /default.prop /data/misc/recovery/default.prop
+    chmod 0440 /data/misc/recovery/default.prop
+    chown system log /data/misc/recovery/default.prop
+    mkdir /data/misc/recovery/proc 0770 system log
+    copy /data/misc/recovery/proc/version /data/misc/recovery/proc/version.1
+    chmod 0440 /data/misc/recovery/proc/version.1
+    chown system log /data/misc/recovery/proc/version.1
+    copy /proc/version /data/misc/recovery/proc/version
+    chmod 0440 /data/misc/recovery/proc/version
+    chown system log /data/misc/recovery/proc/version
     mkdir /data/misc/bluedroid 02770 bluetooth bluetooth
     # Fix the access permissions and group ownership for 'bt_config.conf'
     chmod 0660 /data/misc/bluedroid/bt_config.conf
@@ -679,12 +695,17 @@
 on property:security.perf_harden=1
     write /proc/sys/kernel/perf_event_paranoid 3
 
+# on shutdown
+# In device's init.rc, this trigger can be used to do device-specific actions
+# before shutdown. e.g disable watchdog and mask error handling
+
 ## Daemon processes to be run by init.
 ##
 service ueventd /sbin/ueventd
     class core
     critical
     seclabel u:r:ueventd:s0
+    shutdown critical
 
 service healthd /sbin/healthd
     class core
diff --git a/shell_and_utilities/Android.bp b/shell_and_utilities/Android.bp
index 6d35fed..9620d63 100644
--- a/shell_and_utilities/Android.bp
+++ b/shell_and_utilities/Android.bp
@@ -4,7 +4,6 @@
         "bzip2",
         "grep",
         "grep_vendor",
-        "gzip",
         "mkshrc",
         "mkshrc_vendor",
         "reboot",