From: Groepaz (groepaz_at_gmx.net)
Date: 2003-09-05 10:34:36
On Thursday 04 September 2003 18:13, Ullrich von Bassewitz wrote:
> What does that mean? A global variable in a zero page register? No that is
> currently not possible and it would also be difficult to implement, at
> least when using the standard register space in the zero page. Assume a
> function like:
>
> register unsigned g;
>
> void f (void)
> {
> register unsigned foo, bar, faz;
> ....
> }
>
> Since the function uses the complete register bank (6 bytes), the variable
> g would be shadowed by the local variables, as a result an access is no
> longer possible (the old value of g was saved on the stack).
mmmh yes, the pushing/popping register bank to/from stack at each function
entry/exit is exactly what i want to get rid of, since its kindof a
performance killer :o)
is there another way then that would let me do that with a "custom" memory
range in zp then? if possible something that would allow me to use my
variables as before (and not having to convert them to pointers or sth)?
gpz
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This archive was generated by hypermail 2.1.3 : 2003-09-05 10:39:40 CEST