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

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source $SCRIPT_DIR/android_setup.sh

APP_NAME=${APP_ARGS[0]}
PORT=5039

source $SCRIPT_DIR/utils/setup_adb.sh


# 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 -p $GDB_TMP_DIR
echo "Copying symbol files"
adb_pull_if_needed /system/bin/app_process $GDB_TMP_DIR
adb_pull_if_needed /system/lib/libc.so $GDB_TMP_DIR
adb_pull_if_needed /data/data/com.skia/lib/libskia_android.so $GDB_TMP_DIR
adb_pull_if_needed /data/data/com.skia/lib/libSampleApp.so $GDB_TMP_DIR

echo "Pushing gdbserver..."
adb_push_if_needed $ANDROID_TOOLCHAIN/../gdbserver /data/local/tmp

# Launch the app
SK_COMMAND="$APP_ARGS"
echo "Running command $SK_COMMAND"
adb shell am start -n com.skia/com.skia.SkiaSampleActivity

# Attach gdbserver to the app process
PID=$($ADB shell ps | grep com.skia | awk '{print $2}')
echo "Attaching to pid: $PID"
$ADB shell /data/local/tmp/gdbserver :$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"
GDB_COMMAND=$(command ls "$ANDROID_TOOLCHAIN"/*-gdb | head -n1)
"$GDB_COMMAND" -x $GDBSETUP

# Clean up
rm -rf $GDB_TMP_DIR