[fb-d] Re: [OpenBIOS] Mixing 16 and 32 bits code

Ronald G Minnich rminnich at lanl.gov
Sat May 20 14:17:20 CEST 2000

On Fri, 19 May 2000, James Hendricks wrote:

> >  Hmm, why would you encode lgdt manually?  I can't recall gas handling it
> > incorrectly and even if it did it would be gas that would need fixing. 
> > AFAIR, the "lgdtl %es:2" instruction yields exactly the same bytes as you
> > emit explicitly above. 
> As I remember we wanted it and a jump to fit in an exact space at FFF0 or
> something like that.  Ron can tell us better Monday (LANL is closed for a
> few days because of fire).

well the reason we don't use a symbolic reference to the GDT is that ld
kept fouling it up. Hence the need to hardcode the address. I just got
disgusted with the whole thing and hand-assembled it.


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