[Icc-mot] Arrays of function pointers and paged functions
Barry Callahan
barryc at rjlsystems.com
Fri May 11 10:05:34 PDT 2007
I've been playing, off and on, with some code to try and figure out why,
when I have expanded memory enabled and paged functions are default in
my project, trying to call functions via an array of pointers "Just
Doesn't Work".
This morning, I had an epiphany. The reason it doesn't work is that the
MCU doesn't know it needs to swap pages before calling the function. If
I use a pragma to make all of the functions that I want to call via the
array nonpaged, it works.
Is there a way that I can use an array to call the functions without
having them all have to be nonpaged?
I mean, I know I can use trampolines. Or I can use a switch structure.
But both of these alternatives are somewhat sub-optimal.
--
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