Re: floating point (was: GNU sed 2.05)

You (Robert Mayer - Student) wrote:
>
> You (Peter Holzer) wrote:
> >
> > Not an emulator, but I have a soft-FP library lying around. It was
> > originally written for the Minix bcc compiler, and I added some glue
> > for the c386 compiler. Adding glue for gcc would be trivial (just
> > compile the libgcc?.c-files with c386 -gas).
> >
>
> I don't think it is that easy. If you e.g. multiply two reals, then gcc
> generates floating point instructions to do this, and not a function call to
> libgcc.a. One would have to modify gcc's code generator to make your scheme
> work.

You also have to use the -msoft-float and -mno-fp-ret-in-387 flags (or
recompile gcc to make them default).

        hp

-- 
   _  | hp@vmars.tuwien.ac.at | Peter Holzer | TU Vienna | CS/Real-Time Systems
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