platform_tools/android/bin/android_gdb

#!/bin/bash
#
# android_gdb: Pushes parameter binary and gdbserver. Connects
# and enters debugging environment.

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
APP_NAME=$(basename $1)
PORT=5039

# Collect extra arguments to be passed to the Skia binary
shift
while (( "$#" )); do
  APP_ARGS="$APP_ARGS $1"
  shift
done

source $SCRIPT_DIR/android_setup.sh
source $SCRIPT_DIR/utils/setup_adb.sh

echo "Installing Skia Android app"
$SCRIPT_DIR/android_install_skia -f

# Forward local to remote socket connection.
$ADB forward "tcp:$PORT" "tcp:$PORT"

# We kill all previous instances of gdbserver to rid all port overriding errors.
$ADB shell ps | grep gdbserver | awk '{print $2}' | xargs -r $ADB shell kill

# We need the debug symbols from these files
GDB_TMP_DIR=$(pwd)/android_gdb_tmp
mkdir $GDB_TMP_DIR
echo "Copying symbol files"
$ADB pull /system/bin/app_process $GDB_TMP_DIR
$ADB pull /system/lib/libc.so $GDB_TMP_DIR
$ADB pull /data/data/com.skia/lib/lib$APP_NAME.so $GDB_TMP_DIR

# Launch the app
SK_COMMAND="$APP_NAME$APP_ARGS"
echo "Running command $SK_COMMAND"
$ADB shell am broadcast -a com.skia.intent.action.LAUNCH_SKIA -n com.skia/.SkiaReceiver -e args "$SK_COMMAND"

# Attach gdbserver to the app process
PID=$($ADB shell ps | grep skia_native | awk '{print $2}')
echo "Attaching to pid: $PID"
$ADB shell /data/data/com.skia/lib/gdbserver :$PORT --attach $PID &

# Wait for gdbserver
sleep 2

# Set up gdb commands
GDBSETUP=$GDB_TMP_DIR/gdb.setup
echo "file $GDB_TMP_DIR/app_process" >> $GDBSETUP
echo "target remote :$PORT" >> $GDBSETUP
echo "set solib-absolute-prefix $GDB_TMP_DIR" >> $GDBSETUP
echo "set solib-search-path $GDB_TMP_DIR" >> $GDBSETUP

# Launch gdb client
echo "Entering gdb client shell"
$ANDROID_TOOLCHAIN/arm-linux-androideabi-gdb -x $GDBSETUP

# Clean up
rm -rf $GDB_TMP_DIR