The porting for the PSoC 6 is also planned.
With this FORTH-pagage it is possible to test all C-applications interactively without debugger. The Kernel have integrated an interpreter and compiler.
The Compiler is extendabel in FORTH itself.
If you would like to know more about FORTH, you will find the classic Starting-FORTH and Thinking-FORTH by Leo Brodie:
The Definition of ANS FORTH you can find here: http://lars.nocrew.org/dpans/dpans.htm
If you want to know more about Mecrisp-Stellaris you are right here: