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Wrapping a ROM Function with a Macro |
Sometimes a ROM function exists as a normal ROM call in the jump table, but
for some reason it is not usable in a direct way. This means that it has to
be implemented either using macros or using a wrapper function in
tigcc.a
. Using a macro prevents you from taking the address of
the function and therefore from using it as a callback function.
This does not have to be related to an AMS dependency, although it is in the
special case of XR_stringPtr.
In fact, all functions returning
float
values are
implemented in this way, since the TIOS method of returning floats is strange
to say the least.