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Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions
From: |
Al Viro |
Subject: |
Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions |
Date: |
Tue, 8 Jul 2014 21:20:15 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Jul 08, 2014 at 12:04:10PM -0700, Richard Henderson wrote:
> > Just one thing - 0x1fffffffffffff will make 32bit hosts whine about integer
> > constant being too large. So will 0x1ffffffffffffful, unfortunately - it
> > really ought to be ull.
> >
>
> I did use ull on the branch.
Aha... So you've caught that one already... I've looked at your branch;
AFAICS, the only thing missing there is treating stores to FPCR.DNOD in
system mode as "not implemented" (which it is in the code as well as in
21[0-3]64 hardware). Other than that everything seems to be fine; you are
right about cvtql treatment - since that sucker doesn't have /i in any
allowed trap suffices, we might as well just raise Inexact and let it be
masked out - float_flag_inexact will be present in 'ignore'. And yes,
folding the calculation itself in there obviously makes sense.
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, (continued)
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Peter Maydell, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Peter Maydell, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/08
- Message not available
- Message not available
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Alex Bennée, 2014/07/10
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Alex Bennée, 2014/07/09
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions,
Al Viro <=
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/09
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/09
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/10
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/09