Hi, Zoltan! I think I found some sources for pmon:
http://www.anheng.com.cn/loongson/pmon/updates.lemote.com/files/upload/lm/firmware/pmon/source/pmon-priv.tar.gz slooowly downloading (20507323 (20M)) and then in upper dir http://www.anheng.com.cn/loongson/pmon/ toolchain-pmon.tar.bz2 2010-08-31 09:27 36M