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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 07:54:36 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Jul 07, 2014 at 11:03:08PM -0700, Richard Henderson wrote:
> On 07/07/2014 09:20 PM, Al Viro wrote:
> > and I'm reasonably sure that this is what they did internally. You are
> > proposing to do 4 cases in all their messy glory in qemu itself...
>
> Yes. Primarily because we *have* to do so for the linux-user case.
>
> > And that's not even going into generating the right si_code for that SIGFPE.
> > What produces those TARGET_GEN_FLTINE and friends?
>
> linux-user/main.c, cpu_loop.
That's where we consume it; where is it produced? Sure, explicit
gentrap in alpha code will lead there, with whatever we have in
$16 deciding what'll go into si_code, but where does that happen on
fp exception codepaths? IOW, what sets si_code on those?
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, (continued)
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/04
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/04
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/05
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/05
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/05
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/07
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/07
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Richard Henderson, 2014/07/07
- 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, 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, 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
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Peter Maydell, 2014/07/08
- Re: [Qemu-devel] [RFC] alpha qemu arithmetic exceptions, Al Viro, 2014/07/10
- 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