On Tue, Mar 16, 2010 at 11:23:35PM +0100, Maarten Brock wrote:
> Peter,
>
> > The overflow in DSEG is all
> > sloc variables and I don't know how to move those (thats what stack-auto
> > is supposed to do I think?) out of the internal ram.
>
> Yes, stack-auto puts the sloc's on stack too. And you
> cannot move slocs to any other memory, because then SDCC
> would need sloc's to access those sloc's.
>
Does that then imply a severe limit on arguments to functions? Using
both --model-large and --stack-auto makes the failing code compile (but as
noted not run ...).
> > I don't have Keil (and at $2K US am not likely to buy it :-)) but this
> > code is written for it and runs (I have .hex files from the original code).
> > >From the Makefile I think it is using large model (only because the asm
> > >flags
> > set large). I would assume (but don't know for sure) that it should be
> > reentrant by default. From the original Makefile:
> >
> > KEIL = c:/apps/keil/c51
> >
> > ASM = $(KEIL)/bin/a51
> > AFLAGS = set "(large)" debug ep xref
> >
> > CC = $(KEIL)/bin/c51
> > CFLAGS = code noaregs objectextend symbols debug
> >
> > export C51INC = ../W7100/inc
> >
> > LINK = $(KEIL)/bin/bl51
> > export C51LIB = $(KEIL)/lib
> >
> > HEX = $(KEIL)/bin/oh51
> >
> > Peter Van Epp
>
> I don't see anything like large in CFLAGS and therefor
> assume small memory model. Maybe the assembly does use
> large. Keil can mix the models IIRC. And no, the default
> for Keil is not reentrant.
Ah, then perhaps pragma nonreentrant statements may halp me as the
code shouldn't be directly reentrant I don't think. I'll poke further in a
few days (I need to verify a used Oncore GPS receiver works and buy some
more if it does for the next little while :-)). Thanks for the help!
Well I'm here, should code the compiles and runs with --model-medium
also run with only --model-large or are there more flags needed for large
model (and also a huge model now I inderstand)?
Peter
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