Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1000 insertions, 0 deletions

diff --git a/third_party/libwebrtc/build/android/adb_gdb b/third_party/libwebrtc/build/android/adb_gdb
new file mode 100755
index 0000000000..0923210bb6
--- /dev/null
+++ b/third_party/libwebrtc/build/android/adb_gdb
@@ -0,0 +1,1000 @@
+#!/bin/bash
+#
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+
+# A generic script used to attach to a running Chromium process and
+# debug it. Most users should not use this directly, but one of the
+# wrapper scripts like adb_gdb_content_shell
+#
+# Use --help to print full usage instructions.
+#
+
+PROGNAME=$(basename "$0")
+PROGDIR=$(dirname "$0")
+
+# Force locale to C to allow recognizing output from subprocesses.
+LC_ALL=C
+
+# Location of Chromium-top-level sources.
+CHROMIUM_SRC=$(cd "$PROGDIR"/../.. >/dev/null && pwd 2>/dev/null)
+
+TMPDIR=
+GDBSERVER_PIDFILE=
+TARGET_GDBSERVER=
+COMMAND_PREFIX=
+COMMAND_SUFFIX=
+
+clean_exit () {
+  if [ "$TMPDIR" ]; then
+    GDBSERVER_PID=$(cat $GDBSERVER_PIDFILE 2>/dev/null)
+    if [ "$GDBSERVER_PID" ]; then
+      log "Killing background gdbserver process: $GDBSERVER_PID"
+      kill -9 $GDBSERVER_PID >/dev/null 2>&1
+      rm -f "$GDBSERVER_PIDFILE"
+    fi
+    if [ "$TARGET_GDBSERVER" ]; then
+      log "Removing target gdbserver binary: $TARGET_GDBSERVER."
+      "$ADB" shell "$COMMAND_PREFIX" rm "$TARGET_GDBSERVER" \
+          "$TARGET_DOMAIN_SOCKET" "$COMMAND_SUFFIX" >/dev/null 2>&1
+    fi
+    log "Cleaning up: $TMPDIR"
+    rm -rf "$TMPDIR"
+  fi
+  trap "" EXIT
+  exit $1
+}
+
+# Ensure clean exit on Ctrl-C or normal exit.
+trap "clean_exit 1" INT HUP QUIT TERM
+trap "clean_exit \$?" EXIT
+
+panic () {
+  echo "ERROR: $@" >&2
+  exit 1
+}
+
+fail_panic () {
+  if [ $? != 0 ]; then panic "$@"; fi
+}
+
+log () {
+  if [ "$VERBOSE" -gt 0 ]; then
+    echo "$@"
+  fi
+}
+
+DEFAULT_PULL_LIBS_DIR="/tmp/adb-gdb-support-$USER"
+IDE_DIR="$DEFAULT_PULL_LIBS_DIR"
+
+# NOTE: Allow wrapper scripts to set various default through ADB_GDB_XXX
+# environment variables. This is only for cosmetic reasons, i.e. to
+# display proper
+
+# Allow wrapper scripts to set the program name through ADB_GDB_PROGNAME
+PROGNAME=${ADB_GDB_PROGNAME:-$(basename "$0")}
+
+ADB=
+ANNOTATE=
+CGDB=
+GDBINIT=
+GDBSERVER=
+HELP=
+IDE=
+NDK_DIR=
+NO_PULL_LIBS=
+PACKAGE_NAME=
+PID=
+PORT=
+PROGRAM_NAME="activity"
+PULL_LIBS=
+PULL_LIBS_DIR=
+ATTACH_DELAY=1
+SU_PREFIX=
+SYMBOL_DIR=
+TARGET_ARCH=
+TOOLCHAIN=
+VERBOSE=0
+
+for opt; do
+  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
+  case $opt in
+    --adb=*)
+      ADB=$optarg
+      ;;
+    --device=*)
+      export ANDROID_SERIAL=$optarg
+      ;;
+    --annotate=3)
+      ANNOTATE=$optarg
+      ;;
+    --gdbserver=*)
+      GDBSERVER=$optarg
+      ;;
+    --gdb=*)
+      GDB=$optarg
+      ;;
+    --help|-h|-?)
+      HELP=true
+      ;;
+    --ide)
+      IDE=true
+      ;;
+    --ndk-dir=*)
+      NDK_DIR=$optarg
+      ;;
+    --no-pull-libs)
+      NO_PULL_LIBS=true
+      ;;
+    --package-name=*)
+      PACKAGE_NAME=$optarg
+      ;;
+    --pid=*)
+      PID=$optarg
+      ;;
+    --port=*)
+      PORT=$optarg
+      ;;
+    --program-name=*)
+      PROGRAM_NAME=$optarg
+      ;;
+    --pull-libs)
+      PULL_LIBS=true
+      ;;
+    --pull-libs-dir=*)
+      PULL_LIBS_DIR=$optarg
+      ;;
+    --script=*)
+      GDBINIT=$optarg
+      ;;
+    --attach-delay=*)
+      ATTACH_DELAY=$optarg
+      ;;
+    --su-prefix=*)
+      SU_PREFIX=$optarg
+      ;;
+    --symbol-dir=*)
+      SYMBOL_DIR=$optarg
+      ;;
+    --output-directory=*)
+      CHROMIUM_OUTPUT_DIR=$optarg
+      ;;
+    --target-arch=*)
+      TARGET_ARCH=$optarg
+      ;;
+    --toolchain=*)
+      TOOLCHAIN=$optarg
+      ;;
+    --cgdb)
+      CGDB=cgdb
+      ;;
+    --cgdb=*)
+      CGDB=$optarg
+      ;;
+    --verbose)
+      VERBOSE=$(( $VERBOSE + 1 ))
+      ;;
+    -*)
+      panic "Unknown option $opt, see --help." >&2
+      ;;
+    *)
+      if [ "$PACKAGE_NAME" ]; then
+        panic "You can only provide a single package name as argument!\
+ See --help."
+      fi
+      PACKAGE_NAME=$opt
+      ;;
+  esac
+done
+
+if [ "$HELP" ]; then
+  if [ "$ADB_GDB_PROGNAME" ]; then
+    # Assume wrapper scripts all provide a default package name.
+    cat <<EOF
+Usage: $PROGNAME [options]
+
+Attach gdb to a running Android $PROGRAM_NAME process.
+EOF
+  else
+    # Assume this is a direct call to adb_gdb
+  cat <<EOF
+Usage: $PROGNAME [options] [<package-name>]
+
+Attach gdb to a running Android $PROGRAM_NAME process.
+
+If provided, <package-name> must be the name of the Android application's
+package name to be debugged. You can also use --package-name=<name> to
+specify it.
+EOF
+  fi
+
+  cat <<EOF
+
+This script is used to debug a running $PROGRAM_NAME process.
+
+This script needs several things to work properly. It will try to pick
+them up automatically for you though:
+
+   - target gdbserver binary
+   - host gdb client (e.g. arm-linux-androideabi-gdb)
+   - directory with symbolic version of $PROGRAM_NAME's shared libraries.
+
+You can also use --ndk-dir=<path> to specify an alternative NDK installation
+directory.
+
+The script tries to find the most recent version of the debug version of
+shared libraries under one of the following directories:
+
+  \$CHROMIUM_SRC/<out>/lib/                (used by GYP builds)
+  \$CHROMIUM_SRC/<out>/lib.unstripped/     (used by GN builds)
+
+Where <out> is determined by CHROMIUM_OUTPUT_DIR, or --output-directory.
+
+You can set the path manually via --symbol-dir.
+
+The script tries to extract the target architecture from your target device,
+but if this fails, will default to 'arm'. Use --target-arch=<name> to force
+its value.
+
+Otherwise, the script will complain, but you can use the --gdbserver,
+--gdb and --symbol-lib options to specify everything manually.
+
+An alternative to --gdb=<file> is to use --toollchain=<path> to specify
+the path to the host target-specific cross-toolchain.
+
+You will also need the 'adb' tool in your path. Otherwise, use the --adb
+option. The script will complain if there is more than one device connected
+and a device is not specified with either --device or ANDROID_SERIAL).
+
+The first time you use it on a device, the script will pull many system
+libraries required by the process into a temporary directory. This
+is done to strongly improve the debugging experience, like allowing
+readable thread stacks and more. The libraries are copied to the following
+directory by default:
+
+  $DEFAULT_PULL_LIBS_DIR/
+
+But you can use the --pull-libs-dir=<path> option to specify an
+alternative. The script can detect when you change the connected device,
+and will re-pull the libraries only in this case. You can however force it
+with the --pull-libs option.
+
+Any local .gdbinit script will be ignored, but it is possible to pass a
+gdb command script with the --script=<file> option. Note that its commands
+will be passed to gdb after the remote connection and library symbol
+loading have completed.
+
+Valid options:
+  --help|-h|-?          Print this message.
+  --verbose             Increase verbosity.
+
+  --cgdb[=<file>]       Use cgdb (an interface for gdb that shows the code).
+  --symbol-dir=<path>   Specify directory with symbol shared libraries.
+  --output-directory=<path> Specify the output directory (e.g. "out/Debug").
+  --package-name=<name> Specify package name (alternative to 1st argument).
+  --program-name=<name> Specify program name (cosmetic only).
+  --pid=<pid>           Specify application process pid.
+  --attach-delay=<num>  Seconds to wait for gdbserver to attach to the
+                        remote process before starting gdb. Default 1.
+                        <num> may be a float if your sleep(1) supports it.
+  --annotate=<num>      Enable gdb annotation.
+  --script=<file>       Specify extra GDB init script.
+
+  --gdbserver=<file>    Specify target gdbserver binary.
+  --gdb=<file>          Specify host gdb client binary.
+  --target-arch=<name>  Specify NDK target arch.
+  --adb=<file>          Specify host ADB binary.
+  --device=<file>       ADB device serial to use (-s flag).
+  --port=<port>         Specify the tcp port to use.
+  --ide                 Forward gdb port, but do not enter gdb console.
+
+  --su-prefix=<prefix>  Prepend <prefix> to 'adb shell' commands that are
+                        run by this script. This can be useful to use
+                        the 'su' program on rooted production devices.
+                        e.g. --su-prefix="su -c"
+
+  --pull-libs           Force system libraries extraction.
+  --no-pull-libs        Do not extract any system library.
+  --libs-dir=<path>     Specify system libraries extraction directory.
+
+EOF
+  exit 0
+fi
+
+if [ -z "$PACKAGE_NAME" ]; then
+  panic "Please specify a package name on the command line. See --help."
+fi
+
+if [[ -z "$SYMBOL_DIR" && -z "$CHROMIUM_OUTPUT_DIR" ]]; then
+  if [[ -e "build.ninja" ]]; then
+    CHROMIUM_OUTPUT_DIR=$PWD
+  else
+    panic "Please specify an output directory by using one of:
+       --output-directory=out/Debug
+       CHROMIUM_OUTPUT_DIR=out/Debug
+       Setting working directory to an output directory.
+       See --help."
+   fi
+fi
+
+if ls *.so >/dev/null 2>&1; then
+  panic ".so files found in your working directory. These will conflict with" \
+      "library lookup logic. Change your working directory and try again."
+fi
+
+# Detect the build type and symbol directory. This is done by finding
+# the most recent sub-directory containing debug shared libraries under
+# $CHROMIUM_OUTPUT_DIR.
+#
+# Out: nothing, but this sets SYMBOL_DIR
+#
+detect_symbol_dir () {
+  # GYP places unstripped libraries under out/lib
+  # GN places them under out/lib.unstripped
+  local PARENT_DIR="$CHROMIUM_OUTPUT_DIR"
+  if [[ ! -e "$PARENT_DIR" ]]; then
+    PARENT_DIR="$CHROMIUM_SRC/$PARENT_DIR"
+  fi
+  SYMBOL_DIR="$PARENT_DIR/lib.unstripped"
+  if [[ -z "$(ls "$SYMBOL_DIR"/lib*.so 2>/dev/null)" ]]; then
+    SYMBOL_DIR="$PARENT_DIR/lib"
+    if [[ -z "$(ls "$SYMBOL_DIR"/lib*.so 2>/dev/null)" ]]; then
+      panic "Could not find any symbols under \
+$PARENT_DIR/lib{.unstripped}. Please build the program first!"
+    fi
+  fi
+  log "Auto-config: --symbol-dir=$SYMBOL_DIR"
+}
+
+if [ -z "$SYMBOL_DIR" ]; then
+  detect_symbol_dir
+elif [[ -z "$(ls "$SYMBOL_DIR"/lib*.so 2>/dev/null)" ]]; then
+  panic "Could not find any symbols under $SYMBOL_DIR"
+fi
+
+if [ -z "$NDK_DIR" ]; then
+  ANDROID_NDK_ROOT=$(PYTHONPATH=$CHROMIUM_SRC/build/android python -c \
+'from pylib.constants import ANDROID_NDK_ROOT; print ANDROID_NDK_ROOT,')
+else
+  if [ ! -d "$NDK_DIR" ]; then
+    panic "Invalid directory: $NDK_DIR"
+  fi
+  if [ ! -f "$NDK_DIR/ndk-build" ]; then
+    panic "Not a valid NDK directory: $NDK_DIR"
+  fi
+  ANDROID_NDK_ROOT=$NDK_DIR
+fi
+
+if [ "$GDBINIT" -a ! -f "$GDBINIT" ]; then
+  panic "Unknown --script file: $GDBINIT"
+fi
+
+# Check that ADB is in our path
+if [ -z "$ADB" ]; then
+  ADB=$(which adb 2>/dev/null)
+  if [ -z "$ADB" ]; then
+    panic "Can't find 'adb' tool in your path. Install it or use \
+--adb=<file>"
+  fi
+  log "Auto-config: --adb=$ADB"
+fi
+
+# Check that it works minimally
+ADB_VERSION=$($ADB version 2>/dev/null)
+echo "$ADB_VERSION" | fgrep -q -e "Android Debug Bridge"
+if [ $? != 0 ]; then
+  panic "Your 'adb' tool seems invalid, use --adb=<file> to specify a \
+different one: $ADB"
+fi
+
+# If there are more than one device connected, and ANDROID_SERIAL is not
+# defined, print an error message.
+NUM_DEVICES_PLUS2=$($ADB devices 2>/dev/null | wc -l)
+if [ "$NUM_DEVICES_PLUS2" -gt 3 -a -z "$ANDROID_SERIAL" ]; then
+  echo "ERROR: There is more than one Android device connected to ADB."
+  echo "Please define ANDROID_SERIAL to specify which one to use."
+  exit 1
+fi
+
+# Run a command through adb shell, strip the extra \r from the output
+# and return the correct status code to detect failures. This assumes
+# that the adb shell command prints a final \n to stdout.
+# $1+: command to run
+# Out: command's stdout
+# Return: command's status
+# Note: the command's stderr is lost
+adb_shell () {
+  local TMPOUT="$(mktemp)"
+  local LASTLINE RET
+  local ADB=${ADB:-adb}
+
+  # The weird sed rule is to strip the final \r on each output line
+  # Since 'adb shell' never returns the command's proper exit/status code,
+  # we force it to print it as '%%<status>' in the temporary output file,
+  # which we will later strip from it.
+  $ADB shell $@ ";" echo "%%\$?" 2>/dev/null | \
+      sed -e 's![[:cntrl:]]!!g' > $TMPOUT
+  # Get last line in log, which contains the exit code from the command
+  LASTLINE=$(sed -e '$!d' $TMPOUT)
+  # Extract the status code from the end of the line, which must
+  # be '%%<code>'.
+  RET=$(echo "$LASTLINE" | \
+    awk '{ if (match($0, "%%[0-9]+$")) { print substr($0,RSTART+2); } }')
+  # Remove the status code from the last line. Note that this may result
+  # in an empty line.
+  LASTLINE=$(echo "$LASTLINE" | \
+    awk '{ if (match($0, "%%[0-9]+$")) { print substr($0,1,RSTART-1); } }')
+  # The output itself: all lines except the status code.
+  sed -e '$d' $TMPOUT && printf "%s" "$LASTLINE"
+  # Remove temp file.
+  rm -f $TMPOUT
+  # Exit with the appropriate status.
+  return $RET
+}
+
+# Find the target architecture from a local shared library.
+# This returns an NDK-compatible architecture name.
+# out: NDK Architecture name, or empty string.
+get_gyp_target_arch () {
+  # ls prints a broken pipe error when there are a lot of libs.
+  local RANDOM_LIB=$(ls "$SYMBOL_DIR"/lib*.so 2>/dev/null| head -n1)
+  local SO_DESC=$(file $RANDOM_LIB)
+  case $ARCH in
+    *32-bit*ARM,*) echo "arm";;
+    *64-bit*ARM,*) echo "arm64";;
+    *32-bit*Intel,*) echo "x86";;
+    *x86-64,*) echo "x86_64";;
+    *32-bit*MIPS,*) echo "mips";;
+    *) echo "";
+  esac
+}
+
+if [ -z "$TARGET_ARCH" ]; then
+  TARGET_ARCH=$(get_gyp_target_arch)
+  if [ -z "$TARGET_ARCH" ]; then
+    TARGET_ARCH=arm
+  fi
+else
+  # Nit: accept Chromium's 'ia32' as a valid target architecture. This
+  # script prefers the NDK 'x86' name instead because it uses it to find
+  # NDK-specific files (host gdb) with it.
+  if [ "$TARGET_ARCH" = "ia32" ]; then
+    TARGET_ARCH=x86
+    log "Auto-config: --arch=$TARGET_ARCH  (equivalent to ia32)"
+  fi
+fi
+
+# Detect the NDK system name, i.e. the name used to identify the host.
+# out: NDK system name (e.g. 'linux' or 'darwin')
+get_ndk_host_system () {
+  local HOST_OS
+  if [ -z "$NDK_HOST_SYSTEM" ]; then
+    HOST_OS=$(uname -s)
+    case $HOST_OS in
+      Linux) NDK_HOST_SYSTEM=linux;;
+      Darwin) NDK_HOST_SYSTEM=darwin;;
+      *) panic "You can't run this script on this system: $HOST_OS";;
+    esac
+  fi
+  echo "$NDK_HOST_SYSTEM"
+}
+
+# Detect the NDK host architecture name.
+# out: NDK arch name (e.g. 'x86' or 'x86_64')
+get_ndk_host_arch () {
+  local HOST_ARCH HOST_OS
+  if [ -z "$NDK_HOST_ARCH" ]; then
+    HOST_OS=$(get_ndk_host_system)
+    HOST_ARCH=$(uname -p)
+    if [ "$HOST_ARCH" = "unknown" ]; then
+      # In case where "-p" returns "unknown" just use "-m" (machine hardware
+      # name). According to this patch from Fedora "-p" is equivalent to "-m"
+      # anyway: https://goo.gl/Pd47x3
+      HOST_ARCH=$(uname -m)
+    fi
+    case $HOST_ARCH in
+      i?86) NDK_HOST_ARCH=x86;;
+      x86_64|amd64) NDK_HOST_ARCH=x86_64;;
+      *) panic "You can't run this script on this host architecture: $HOST_ARCH";;
+    esac
+    # Darwin trick: "uname -p" always returns i386 on 64-bit installations.
+    if [ "$HOST_OS" = darwin -a "$NDK_HOST_ARCH" = "x86" ]; then
+      # Use '/usr/bin/file', not just 'file' to avoid buggy MacPorts
+      # implementations of the tool. See http://b.android.com/53769
+      HOST_64BITS=$(/usr/bin/file -L "$SHELL" | grep -e "x86[_-]64")
+      if [ "$HOST_64BITS" ]; then
+        NDK_HOST_ARCH=x86_64
+      fi
+    fi
+  fi
+  echo "$NDK_HOST_ARCH"
+}
+
+# Convert an NDK architecture name into a GNU configure triplet.
+# $1: NDK architecture name (e.g. 'arm')
+# Out: Android GNU configure triplet (e.g. 'arm-linux-androideabi')
+get_arch_gnu_config () {
+  case $1 in
+    arm)
+      echo "arm-linux-androideabi"
+      ;;
+    arm64)
+      echo "aarch64-linux-android"
+      ;;
+    x86)
+      echo "i686-linux-android"
+      ;;
+    x86_64)
+      echo "x86_64-linux-android"
+      ;;
+    mips)
+      echo "mipsel-linux-android"
+      ;;
+    *)
+      echo "$ARCH-linux-android"
+      ;;
+  esac
+}
+
+# Convert an NDK architecture name into a toolchain name prefix
+# $1: NDK architecture name (e.g. 'arm')
+# Out: NDK toolchain name prefix (e.g. 'arm-linux-androideabi')
+get_arch_toolchain_prefix () {
+  # Return the configure triplet, except for x86 and x86_64!
+  if [ "$1" = "x86" -o "$1" = "x86_64" ]; then
+    echo "$1"
+  else
+    get_arch_gnu_config $1
+  fi
+}
+
+# Find a NDK toolchain prebuilt file or sub-directory.
+# This will probe the various arch-specific toolchain directories
+# in the NDK for the needed file.
+# $1: NDK install path
+# $2: NDK architecture name
+# $3: prebuilt sub-path to look for.
+# Out: file path, or empty if none is found.
+get_ndk_toolchain_prebuilt () {
+  local NDK_DIR="${1%/}"
+  local ARCH="$2"
+  local SUBPATH="$3"
+  local NAME="$(get_arch_toolchain_prefix $ARCH)"
+  local FILE TARGET
+  FILE=$NDK_DIR/toolchains/$NAME-4.9/prebuilt/$SUBPATH
+  if [ ! -f "$FILE" ]; then
+    FILE=$NDK_DIR/toolchains/$NAME-4.8/prebuilt/$SUBPATH
+    if [ ! -f "$FILE" ]; then
+      FILE=
+    fi
+  fi
+  echo "$FILE"
+}
+
+# Find the path to an NDK's toolchain full prefix for a given architecture
+# $1: NDK install path
+# $2: NDK target architecture name
+# Out: install path + binary prefix (e.g.
+#      ".../path/to/bin/arm-linux-androideabi-")
+get_ndk_toolchain_fullprefix () {
+  local NDK_DIR="$1"
+  local ARCH="$2"
+  local TARGET NAME HOST_OS HOST_ARCH LD CONFIG
+
+  # NOTE: This will need to be updated if the NDK changes the names or moves
+  #        the location of its prebuilt toolchains.
+  #
+  LD=
+  HOST_OS=$(get_ndk_host_system)
+  HOST_ARCH=$(get_ndk_host_arch)
+  CONFIG=$(get_arch_gnu_config $ARCH)
+  LD=$(get_ndk_toolchain_prebuilt \
+        "$NDK_DIR" "$ARCH" "$HOST_OS-$HOST_ARCH/bin/$CONFIG-ld")
+  if [ -z "$LD" -a "$HOST_ARCH" = "x86_64" ]; then
+    LD=$(get_ndk_toolchain_prebuilt \
+         "$NDK_DIR" "$ARCH" "$HOST_OS-x86/bin/$CONFIG-ld")
+  fi
+  if [ ! -f "$LD" -a "$ARCH" = "x86" ]; then
+    # Special case, the x86 toolchain used to be incorrectly
+    # named i686-android-linux-gcc!
+    LD=$(get_ndk_toolchain_prebuilt \
+         "$NDK_DIR" "$ARCH" "$HOST_OS-x86/bin/i686-android-linux-ld")
+  fi
+  if [ -z "$LD" ]; then
+    panic "Cannot find Android NDK toolchain for '$ARCH' architecture. \
+Please verify your NDK installation!"
+  fi
+  echo "${LD%%ld}"
+}
+
+# $1: NDK install path
+get_ndk_host_gdb_client() {
+  local NDK_DIR="$1"
+  local HOST_OS HOST_ARCH
+
+  HOST_OS=$(get_ndk_host_system)
+  HOST_ARCH=$(get_ndk_host_arch)
+  echo "$NDK_DIR/prebuilt/$HOST_OS-$HOST_ARCH/bin/gdb"
+}
+
+# $1: NDK install path
+# $2: target architecture.
+get_ndk_gdbserver () {
+  local NDK_DIR="$1"
+  local ARCH=$2
+  local BINARY
+
+  # The location has moved after NDK r8
+  BINARY=$NDK_DIR/prebuilt/android-$ARCH/gdbserver/gdbserver
+  if [ ! -f "$BINARY" ]; then
+    BINARY=$(get_ndk_toolchain_prebuilt "$NDK_DIR" "$ARCH" gdbserver)
+  fi
+  echo "$BINARY"
+}
+
+# Check/probe the path to the Android toolchain installation. Always
+# use the NDK versions of gdb and gdbserver. They must match to avoid
+# issues when both binaries do not speak the same wire protocol.
+#
+if [ -z "$TOOLCHAIN" ]; then
+  ANDROID_TOOLCHAIN=$(get_ndk_toolchain_fullprefix \
+                      "$ANDROID_NDK_ROOT" "$TARGET_ARCH")
+  ANDROID_TOOLCHAIN=$(dirname "$ANDROID_TOOLCHAIN")
+  log "Auto-config: --toolchain=$ANDROID_TOOLCHAIN"
+else
+  # Be flexible, allow one to specify either the install path or the bin
+  # sub-directory in --toolchain:
+  #
+  if [ -d "$TOOLCHAIN/bin" ]; then
+    TOOLCHAIN=$TOOLCHAIN/bin
+  fi
+  ANDROID_TOOLCHAIN=$TOOLCHAIN
+fi
+
+# Cosmetic: Remove trailing directory separator.
+ANDROID_TOOLCHAIN=${ANDROID_TOOLCHAIN%/}
+
+# Find host GDB client binary
+if [ -z "$GDB" ]; then
+  GDB=$(get_ndk_host_gdb_client "$ANDROID_NDK_ROOT")
+  if [ -z "$GDB" ]; then
+    panic "Can't find Android gdb client in your path, check your \
+--toolchain or --gdb path."
+  fi
+  log "Host gdb client: $GDB"
+fi
+
+# Find gdbserver binary, we will later push it to /data/local/tmp
+# This ensures that both gdbserver and $GDB talk the same binary protocol,
+# otherwise weird problems will appear.
+#
+if [ -z "$GDBSERVER" ]; then
+  GDBSERVER=$(get_ndk_gdbserver "$ANDROID_NDK_ROOT" "$TARGET_ARCH")
+  if [ -z "$GDBSERVER" ]; then
+    panic "Can't find NDK gdbserver binary. use --gdbserver to specify \
+valid one!"
+  fi
+  log "Auto-config: --gdbserver=$GDBSERVER"
+fi
+
+# A unique ID for this script's session. This needs to be the same in all
+# sub-shell commands we're going to launch, so take the PID of the launcher
+# process.
+TMP_ID=$$
+
+# Temporary directory, will get cleaned up on exit.
+TMPDIR=/tmp/$USER-adb-gdb-tmp-$TMP_ID
+mkdir -p "$TMPDIR" && rm -rf "$TMPDIR"/*
+
+GDBSERVER_PIDFILE="$TMPDIR"/gdbserver-$TMP_ID.pid
+
+# Return the timestamp of a given file, as number of seconds since epoch.
+# $1: file path
+# Out: file timestamp
+get_file_timestamp () {
+  stat -c %Y "$1" 2>/dev/null
+}
+
+# Allow several concurrent debugging sessions
+APP_DATA_DIR=$(adb_shell run-as $PACKAGE_NAME /system/bin/sh -c pwd)
+fail_panic "Failed to run-as $PACKAGE_NAME, is the app debuggable?"
+TARGET_GDBSERVER="$APP_DATA_DIR/gdbserver-adb-gdb-$TMP_ID"
+TMP_TARGET_GDBSERVER=/data/local/tmp/gdbserver-adb-gdb-$TMP_ID
+
+# Select correct app_process for architecture.
+case $TARGET_ARCH in
+      arm|x86|mips) GDBEXEC=app_process32;;
+      arm64|x86_64) GDBEXEC=app_process64; SUFFIX_64_BIT=64;;
+      *) panic "Unknown app_process for architecture!";;
+esac
+
+# Default to app_process if bit-width specific process isn't found.
+adb_shell ls /system/bin/$GDBEXEC > /dev/null
+if [ $? != 0 ]; then
+    GDBEXEC=app_process
+fi
+
+# Detect AddressSanitizer setup on the device. In that case app_process is a
+# script, and the real executable is app_process.real.
+GDBEXEC_ASAN=app_process.real
+adb_shell ls /system/bin/$GDBEXEC_ASAN > /dev/null
+if [ $? == 0 ]; then
+    GDBEXEC=$GDBEXEC_ASAN
+fi
+
+ORG_PULL_LIBS_DIR=$PULL_LIBS_DIR
+if [[ -n "$ANDROID_SERIAL" ]]; then
+  DEFAULT_PULL_LIBS_DIR="$DEFAULT_PULL_LIBS_DIR/$ANDROID_SERIAL-$SUFFIX_64_BIT"
+fi
+PULL_LIBS_DIR=${PULL_LIBS_DIR:-$DEFAULT_PULL_LIBS_DIR}
+
+HOST_FINGERPRINT=
+DEVICE_FINGERPRINT=$(adb_shell getprop ro.build.fingerprint)
+[[ "$DEVICE_FINGERPRINT" ]] || panic "Failed to get the device fingerprint"
+log "Device build fingerprint: $DEVICE_FINGERPRINT"
+
+if [ ! -f "$PULL_LIBS_DIR/build.fingerprint" ]; then
+  log "Auto-config: --pull-libs  (no cached libraries)"
+  PULL_LIBS=true
+else
+  HOST_FINGERPRINT=$(< "$PULL_LIBS_DIR/build.fingerprint")
+  log "Host build fingerprint:   $HOST_FINGERPRINT"
+  if [ "$HOST_FINGERPRINT" == "$DEVICE_FINGERPRINT" ]; then
+    log "Auto-config: --no-pull-libs (fingerprint match)"
+    NO_PULL_LIBS=true
+  else
+    log "Auto-config: --pull-libs  (fingerprint mismatch)"
+    PULL_LIBS=true
+  fi
+fi
+
+# If requested, work for M-x gdb.  The gdb indirections make it
+# difficult to pass --annotate=3 to the gdb binary itself.
+if [ "$ANNOTATE" ]; then
+  GDB_ARGS=$GDB_ARGS" --annotate=$ANNOTATE"
+fi
+
+# Get the PID from the first argument or else find the PID of the
+# browser process.
+if [ -z "$PID" ]; then
+  PROCESSNAME=$PACKAGE_NAME
+  if [ -z "$PID" ]; then
+    PID=$(adb_shell ps | \
+          awk '$9 == "'$PROCESSNAME'" { print $2; }' | head -1)
+  fi
+  if [ -z "$PID" ]; then
+    panic "Can't find application process PID."
+  fi
+  log "Found process PID: $PID"
+fi
+
+# Determine if 'adb shell' runs as root or not.
+# If so, we can launch gdbserver directly, otherwise, we have to
+# use run-as $PACKAGE_NAME ..., which requires the package to be debuggable.
+#
+if [ "$SU_PREFIX" ]; then
+  # Need to check that this works properly.
+  SU_PREFIX_TEST_LOG=$TMPDIR/su-prefix.log
+  adb_shell $SU_PREFIX \"echo "foo"\" > $SU_PREFIX_TEST_LOG 2>&1
+  if [ $? != 0 -o "$(cat $SU_PREFIX_TEST_LOG)" != "foo" ]; then
+    echo "ERROR: Cannot use '$SU_PREFIX' as a valid su prefix:"
+    echo "$ adb shell $SU_PREFIX \"echo foo\""
+    cat $SU_PREFIX_TEST_LOG
+    exit 1
+  fi
+  COMMAND_PREFIX="$SU_PREFIX \""
+  COMMAND_SUFFIX="\""
+else
+  SHELL_UID=$("$ADB" shell cat /proc/self/status | \
+              awk '$1 == "Uid:" { print $2; }')
+  log "Shell UID: $SHELL_UID"
+  if [ "$SHELL_UID" != 0 -o -n "$NO_ROOT" ]; then
+    COMMAND_PREFIX="run-as $PACKAGE_NAME"
+    COMMAND_SUFFIX=
+  else
+    COMMAND_PREFIX=
+    COMMAND_SUFFIX=
+  fi
+fi
+log "Command prefix: '$COMMAND_PREFIX'"
+log "Command suffix: '$COMMAND_SUFFIX'"
+
+mkdir -p "$PULL_LIBS_DIR"
+fail_panic "Can't create --libs-dir directory: $PULL_LIBS_DIR"
+
+# Pull device's system libraries that are mapped by our process.
+# Pulling all system libraries is too long, so determine which ones
+# we need by looking at /proc/$PID/maps instead
+if [ "$PULL_LIBS" -a -z "$NO_PULL_LIBS" ]; then
+  echo "Extracting system libraries into: $PULL_LIBS_DIR"
+  MAPPINGS=$(adb_shell $COMMAND_PREFIX cat /proc/$PID/maps $COMMAND_SUFFIX)
+  if [ $? != 0 ]; then
+    echo "ERROR: Could not list process's memory mappings."
+    if [ "$SU_PREFIX" ]; then
+      panic "Are you sure your --su-prefix is correct?"
+    else
+      panic "Use --su-prefix if the application is not debuggable."
+    fi
+  fi
+  # Remove the fingerprint file in case pulling one of the libs fails.
+  rm -f "$PULL_LIBS_DIR/build.fingerprint"
+  SYSTEM_LIBS=$(echo "$MAPPINGS" | \
+      awk '$6 ~ /\/(system|apex|vendor)\/.*\.so$/ { print $6; }' | sort -u)
+  for SYSLIB in /system/bin/linker$SUFFIX_64_BIT $SYSTEM_LIBS; do
+    echo "Pulling from device: $SYSLIB"
+    DST_FILE=$PULL_LIBS_DIR$SYSLIB
+    DST_DIR=$(dirname "$DST_FILE")
+    mkdir -p "$DST_DIR" && "$ADB" pull $SYSLIB "$DST_FILE" 2>/dev/null
+    fail_panic "Could not pull $SYSLIB from device !?"
+  done
+  echo "Writing the device fingerprint"
+  echo "$DEVICE_FINGERPRINT" > "$PULL_LIBS_DIR/build.fingerprint"
+fi
+
+# Pull the app_process binary from the device.
+log "Pulling $GDBEXEC from device"
+"$ADB" pull /system/bin/$GDBEXEC "$TMPDIR"/$GDBEXEC &>/dev/null
+fail_panic "Could not retrieve $GDBEXEC from the device!"
+
+# Find all the sub-directories of $PULL_LIBS_DIR, up to depth 4
+# so we can add them to solib-search-path later.
+SOLIB_DIRS=$(find $PULL_LIBS_DIR -mindepth 1 -maxdepth 4 -type d | \
+             grep -v "^$" | tr '\n' ':')
+SOLIB_DIRS=${SOLIB_DIRS%:}  # Strip trailing :
+
+# Applications with minSdkVersion >= 24 will have their data directories
+# created with rwx------ permissions, preventing adbd from forwarding to
+# the gdbserver socket.
+adb_shell $COMMAND_PREFIX chmod a+x $APP_DATA_DIR $COMMAND_SUFFIX
+
+# Push gdbserver to the device
+log "Pushing gdbserver $GDBSERVER to $TARGET_GDBSERVER"
+"$ADB" push $GDBSERVER $TMP_TARGET_GDBSERVER >/dev/null && \
+    adb_shell $COMMAND_PREFIX cp $TMP_TARGET_GDBSERVER $TARGET_GDBSERVER $COMMAND_SUFFIX && \
+    adb_shell rm $TMP_TARGET_GDBSERVER
+fail_panic "Could not copy gdbserver to the device!"
+
+if [ -z "$PORT" ]; then
+  # Random port to allow multiple concurrent sessions.
+  PORT=$(( $RANDOM % 1000 + 5039 ))
+fi
+HOST_PORT=$PORT
+TARGET_DOMAIN_SOCKET=$APP_DATA_DIR/gdb-socket-$HOST_PORT
+
+# Setup network redirection
+log "Setting network redirection (host:$HOST_PORT -> device:$TARGET_DOMAIN_SOCKET)"
+"$ADB" forward tcp:$HOST_PORT localfilesystem:$TARGET_DOMAIN_SOCKET
+fail_panic "Could not setup network redirection from \
+host:localhost:$HOST_PORT to device:$TARGET_DOMAIN_SOCKET"
+
+# Start gdbserver in the background
+# Note that using run-as requires the package to be debuggable.
+#
+# If not, this will fail horribly. The alternative is to run the
+# program as root, which requires of course root privileges.
+# Maybe we should add a --root option to enable this?
+#
+
+for i in 1 2; do
+  log "Starting gdbserver in the background:"
+  GDBSERVER_LOG=$TMPDIR/gdbserver-$TMP_ID.log
+  log "adb shell $COMMAND_PREFIX $TARGET_GDBSERVER \
+    --once +$TARGET_DOMAIN_SOCKET \
+    --attach $PID $COMMAND_SUFFIX"
+  "$ADB" shell $COMMAND_PREFIX $TARGET_GDBSERVER \
+    --once +$TARGET_DOMAIN_SOCKET \
+    --attach $PID $COMMAND_SUFFIX > $GDBSERVER_LOG 2>&1 &
+  GDBSERVER_PID=$!
+  echo "$GDBSERVER_PID" > $GDBSERVER_PIDFILE
+  log "background job pid: $GDBSERVER_PID"
+
+  # Sleep to allow gdbserver to attach to the remote process and be
+  # ready to connect to.
+  log "Sleeping ${ATTACH_DELAY}s to ensure gdbserver is alive"
+  sleep "$ATTACH_DELAY"
+  log "Job control: $(jobs -l)"
+  STATE=$(jobs -l | awk '$2 == "'$GDBSERVER_PID'" { print $3; }')
+  if [ "$STATE" != "Running" ]; then
+    pid_msg=$(grep "is already traced by process" $GDBSERVER_LOG 2>/dev/null)
+    if [[ -n "$pid_msg" ]]; then
+      old_pid=${pid_msg##* }
+      old_pid=${old_pid//[$'\r\n']}  # Trim trailing \r.
+      echo "Killing previous gdb server process (pid=$old_pid)"
+      adb_shell $COMMAND_PREFIX kill -9 $old_pid $COMMAND_SUFFIX
+      continue
+    fi
+    echo "ERROR: GDBServer either failed to run or attach to PID $PID!"
+    echo "Here is the output from gdbserver (also try --verbose for more):"
+    echo "===== gdbserver.log start ====="
+    cat $GDBSERVER_LOG
+    echo ="===== gdbserver.log end ======"
+    exit 1
+  fi
+  break
+done
+
+# Generate a file containing useful GDB initialization commands
+readonly COMMANDS=$TMPDIR/gdb.init
+log "Generating GDB initialization commands file: $COMMANDS"
+cat > "$COMMANDS" <<EOF
+set osabi GNU/Linux  # Copied from ndk-gdb.py.
+set print pretty 1
+python
+import sys
+sys.path.insert(0, '$CHROMIUM_SRC/tools/gdb/')
+try:
+  import gdb_chrome
+finally:
+  sys.path.pop(0)
+end
+file $TMPDIR/$GDBEXEC
+directory $CHROMIUM_OUTPUT_DIR
+set solib-absolute-prefix $PULL_LIBS_DIR
+set solib-search-path $SOLIB_DIRS:$PULL_LIBS_DIR:$SYMBOL_DIR
+
+python
+# Copied from ndk-gdb.py:
+def target_remote_with_retry(target, timeout_seconds):
+  import time
+  end_time = time.time() + timeout_seconds
+  while True:
+    try:
+      gdb.execute('target remote ' + target)
+      return True
+    except gdb.error as e:
+      time_left = end_time - time.time()
+      if time_left < 0 or time_left > timeout_seconds:
+        print("Error: unable to connect to device.")
+        print(e)
+        return False
+      time.sleep(min(0.25, time_left))
+
+print("Connecting to :$HOST_PORT...")
+if target_remote_with_retry(':$HOST_PORT', 5):
+  print("Attached! Reading symbols (takes ~30 seconds).")
+end
+EOF
+
+if [ "$GDBINIT" ]; then
+  cat "$GDBINIT" >> "$COMMANDS"
+fi
+
+if [ "$VERBOSE" -gt 0 ]; then
+  echo "### START $COMMANDS"
+  cat "$COMMANDS"
+  echo "### END $COMMANDS"
+fi
+
+if [ "$IDE" ]; then
+  mkdir -p "$IDE_DIR"
+  SYM_GDB="$IDE_DIR/gdb"
+  SYM_EXE="$IDE_DIR/app_process"
+  SYM_INIT="$IDE_DIR/gdbinit"
+  ln -sf "$TMPDIR/$GDBEXEC" "$SYM_EXE"
+  ln -sf "$COMMANDS" "$SYM_INIT"
+  # gdb doesn't work when symlinked, so create a wrapper.
+  echo
+  cat > $SYM_GDB <<EOF
+#!/bin/sh
+exec $GDB "\$@"
+EOF
+  chmod u+x $SYM_GDB
+
+  echo "GDB server listening on: localhost:$PORT"
+  echo "GDB wrapper script: $SYM_GDB"
+  echo "App executable: $SYM_EXE"
+  echo "gdbinit: $SYM_INIT"
+  echo "Connect with vscode: https://chromium.googlesource.com/chromium/src/+/main/docs/vscode.md#Launch-Commands"
+  echo "Showing gdbserver logs. Press Ctrl-C to disconnect."
+  tail -f "$GDBSERVER_LOG"
+else
+  log "Launching gdb client: $GDB $GDB_ARGS -x $COMMANDS"
+  echo "Server log: $GDBSERVER_LOG"
+  if [ "$CGDB" ]; then
+    $CGDB -d $GDB -- $GDB_ARGS -x "$COMMANDS"
+  else
+    $GDB $GDB_ARGS -x "$COMMANDS"
+  fi
+fi