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Re: [Qemu-devel] ARM

From: Daniel Jacobowitz
Subject: Re: [Qemu-devel] ARM
Date: Thu, 10 Jul 2003 19:17:17 -0400
User-agent: Mutt/1.5.1i

On Thu, Jul 10, 2003 at 06:45:03PM +0200, Laurent Desnogues wrote:
> > Warning: no FPU emulation is done. I just added the necessary code to 
> > skip the few FPU instructions present in the libc. If anyone has ideas 
> > about FPU on ARM, I am interested
>    When I wrote my ARM v5TE simulator, ARM ISA documentation only
> talked about the VFP unit which had no silicon implementation...
> It looks like there are multiple other FP units on ARM, kind of
> messy!  So what specific implementation is required for QEMU?

The Linux/ARM ABI specifies the use of FPA byte-ordering for floats. 
But I wouldn't shed any tears if QEmu didn't bother to implement the
relevant coprocessor.  FPA's really annoying; the byte ordering is
big-byte-little-word (or the other way around).

Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

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