[sdcc-devel] trying to create a "rom calls table"

[Sébastien L. <sq...@gm...>]

Hi,

I have a set of functions with different arguments and different return
types, all declared reentrant.

I want to build an entry point table so I declared:

__code void* romcalls[] = {
    /* serial */
    serial_init,
    serial_available,
etc
};

but the compiler complains on each array entry :
error 47: indirections to different types assignment
from type 'void function    ( ) '
to type 'const-void code* '
error 47: indirections to different types assignment
from type 'unsigned-char function    ( ) '
to type 'const-void code* '

isn't it possible to cast a function pointer to __code void* ?

this is not the same error reported a few days ago with the "pointer =
&function() " bad syntax, what I write is (I think) legal C code on a
"normal" (~gcc) compiler.

How can I achieve this behaviour? I just want the functions addresses in an
array or 2-bytes values!

Sebastien

PS: the final goal is to write a set of functions in ROM (0000-7FFF) along
with a loader that loads an user supplied program at 8000-FFFF and then runs
it, using ROM stored functions - I have this type of thing in my TI89
calculator (ok that's a 68k but that's not the point) and that's quite
useful: no need to re-implement classic functions in user code, just use the
ROM routines :-)