Here are some notes on debugging with gdb while rebasing replicant changes on top of the last cyanogenmod.
adb shell while true;do gdbserver 127.0.0.1:8022 --attach $(pidof system_server);done
adb forward tcp:8022 tcp:8022
. build/envsetup.sh lunch cm_maguro-eng $ arm-linux-androideabi-gdb GNU gdb (GDB) 7.1-android-gg2 Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "--host=i686-linux-gnu --target=arm-elf-linux". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. (gdb) set sysroot ./out/target/product/maguro/symbols/ (gdb) set solib-search-path ./out/target/product/maguro/symbols/system/lib/:./out/target/product/maguro/symbols/system/lib/hw/:./out/target/product/maguro/symbols/system/vendor/lib/hw/ (gdb) file ./out/target/product/maguro/symbols/system/bin/system_server (gdb) target remote 192.168.20.132:8022