[OpenBIOS] How primitive words are getting called?

Hello,

I am unable to understand how the forth words are called? The
definitions for forth words are maintained in "char *wordnames[]" of
"/kernel/bootstrap.c" and in "/kernel/primitive.c" all the functions for
primitive words are defined.

When we say "dup" what will be the s/w flow? Please let me know how
these two files are interconnected.

Please give me some input with regard to this.

Thanks and Regards
Swamy