[Freemint-list] Gemma

[Thorsten Otto]

Small update:

I was wrong in two respects: MiNT does not care about that "nargs" argument. The 
"exec" function only checks the function number, then replaces the SLB handle by 
the BASEPAGE of the slb and jumps to the function. This works since the signature 
of those function is the same, except for the type of the first arument. That also 
explains why calling the functions actually works without -mshort, since the slb 
itself is also compiled without. But i would bet that this attempt does not work on 
MagiC anymore (cannot proove that currently).

The second thing is, that apparently the comment in mint about not supporting 
loading slb's from another slb is wrong: it actually works. That kernel32.slb is 
indeed called from a function that is part of a slb. Maybe i misunderstood that 
comment, and you can't do that from the init() or open() function, but it works when 
doing it from a function that is supplied by the slb.

With a few changes (changing the include from gemma/gemma to slb/gemma in a 
few sources mainly), i was now able to compile gemmkfatfs:


What i also noticed in the meantime is that
a) the static library libgemma.a has replacements for most, but not all of the gemlib 
functions. That might cause imho problems when you mix these. It currently also 
only works with the mt_gem.h header, because the non-mt functions are 
redeclared incompatible in slb/gemma.h.

b) the library is currently only compiled for normal & 020. That can simply be 
changed to also include coldfire versions.

c) the slb itself is compiled for 020 only. Maybe that is the reason why it did not 
work for Vincent?

Atleast, with a few changes, we should be able to activate that target again. Maybe 
we can make someone happy with a GUI interface for mkfatfs ;)

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