After some efforts building and tune up of the free development tools I want show what it really works. Tools represented on: https://stm8-binutils-gdb.sourceforge.io/. I was build and assembly it by Linux Debian 4.9.0 and run using Eclipse Oxygen 3. Despite some surprises, it is possible to make quality debugging and verification of your programs. I made a short video that I'm offering to your attention. A huge thanks to Philipp Krause for important tips.
Thank you for your interest.