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* NOTE: While they generally work, these instructions are obsoleted by [[Mobile/Fennec/Android/GDB]], which automates most of the steps below and fixes other issues as well. That version of gdb is recommended over the ndk version as of late 2012. | * NOTE: While they generally work, these instructions are obsoleted by [[Mobile/Fennec/Android/GDB]], which automates most of the steps below and fixes other issues as well. That version of gdb is recommended over the ndk version as of late 2012. | ||
=== debugging without rooting === | |||
with Froyo you can debug without rooting your phone. Instructions are below.<br> | |||
First thing, to make this work with the nvidia gdb (which I found more reliable than the android r3 gdb) you need to modify install.sh and debug.sh. | |||
first, change the location where install.sh copies gdbserver to somewhere writable by a non-root process. I used /data/local. Be sure to update that both in the push command and the chmod command. | |||
second, update debug.sh with the new location of gdbserver. | |||
finally, you'll need to add run-as $2 to the adb shell command that launches gdbserver. In the end you should have: install.sh: | |||
#!/bin/sh | |||
mkdir lib | |||
adb push prebuilt/gdbserver /data/local | |||
adb shell chmod 755 /data/local/gdbserver | |||
for file in $(adb shell ls /system/lib | tr "\n" " " | tr "\r" " "); do | |||
adb pull /system/lib/$file lib | |||
done | |||
adb pull /system/bin/app_process lib | |||
The above will miss some vendor drivers, you can use busybox to find all shared libraries | |||
for file in $(adb shell /data/local/busybox find / -name "*.so" | tr "\n" " " | tr "\r" " "); do adb pull /$file lib_unlock_nexus/; done | |||
debug.sh: | |||
#!/bin/sh | |||
if [ $# -ne 2 ] | |||
then | |||
echo "usage: $0 /path/to/your/library.so packagename.of.your.activity" | |||
echo "for example:" | |||
echo " $0 /code/mydemo/libs/armeabi/libmydemo.so com.nvidia.devtech.mydemo" | |||
exit | |||
fi | |||
if [ ! -f $1 ] | |||
then | |||
echo "ERROR: That library file doesn't exist" | |||
exit | |||
fi | |||
cp $1 lib | |||
p=`adb shell ps | grep $2 | awk '{print $2}'` | |||
if [ "$p" = "" ]; | |||
then | |||
echo "ERROR: That doesn't seem to be a running process. Please make sure your" | |||
echo "application has been started and that you are using the correct" | |||
echo "namespace argument." | |||
exit | |||
fi | |||
adb forward tcp:12345 tcp:12345 | |||
adb shell run-as $2 /data/local/gdbserver --attach :12345 $p | |||
=== Attaching GDB === | |||
Assuming you have the nvidia gdb at the top of your home directory and the app_process binary in the current working directory. | |||
~/nvidia-gdb/prebuilt/linux-x86/arm-eabi-gdb ./app_process | |||
= GDB on Android without Root<br> = | = GDB on Android without Root<br> = | ||