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→Running JimDB
This will automatically start gdbserver and fennec on the device, and start gdb on your computer.
=== First run of JimDB ===
Run JimDB, type as usual 'continue' to actually start running Fennec, give it several seconds, and hit Ctrl+C to interrupt Fennec.
The first time, it will probably complain:
Program received signal SIGINT, Interrupt.
warning: Could not load shared library symbols for org.mozilla.fennec_bjacob.
Do you need "set solib-search-path" or "set sysroot"?
Do not worry about this. It will seem frozen for several seconds, but let it run. What's happening is that it's pulling all the libraries from the device into the moz-gdb directory. Ignore the suggestion about setting solib-search-path/sysroot, JimDB will do it all for you. Once it's done, you get a GDB invite as usual.
Do this sanity check:
(gdb) info shared
For each loaded library you'll see whether symbols were found: Yes, No, or "Yes (*)" meaning no debug info. Press Enter until the listing is complete. You want to make two things sure:
* Ensure that libXUL has debug info i.e. you should see a plain Yes for libxul.so. If not, that means that something is wrong with your fennec build (is it a non-debug build?) or with your gdbinit (see above).
* Ensure that no library has a No. Typically, some system drivers will give you a No. For each such library, you want to manually pull it from the device into moz-gdb/lib/<device hex id>/path. These drivers are typically found in /vendor on your device.
