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Re: R: R: About hardfloat in ppc
From: |
Alex Bennée |
Subject: |
Re: R: R: About hardfloat in ppc |
Date: |
Wed, 29 Apr 2020 19:25:30 +0100 |
User-agent: |
mu4e 1.4.1; emacs 28.0.50 |
Dino Papararo <address@hidden> writes:
> Hi Alex,
<snip>
>
> I leave to you TCG's experts how it works and how to implement it, I'm
> only tryng to explain a possible fast way to go (if ever possible) 😊
This is all a theoretical discussion unless someone cares enough to
improve the situation. While I have an interest in improving TCG
performance I'm afraid there are many more easier wins before tackling a
target specific hack for which I'm not familiar. No doubt this thread
will be referred to next time someone wants something done about it.
> ..Large majority of software don't check for exceptions at all and if
> I really want to pursue max precision I'll go for a software
> multiprecision library like GMP or MPFR Libraries.
However for QEMU we regard failure to correctly emulate the architecture
as a bug - we don't code to common software patterns because there is
plenty of software out there that doesn't follow it.
> So the hardfloats 'should' be set as first choice and only if
> instruction requires precision/error check process it in softfloats.
Sure but someone will have to do the work to support that.
--
Alex Bennée
- Re: About hardfloat in ppc, (continued)
- Re: About hardfloat in ppc, Yonggang Luo, 2020/04/27
- Re: About hardfloat in ppc, Alex Bennée, 2020/04/28
- Re: About hardfloat in ppc, Yonggang Luo, 2020/04/28
- R: About hardfloat in ppc, Dino Papararo, 2020/04/29
- R: About hardfloat in ppc, Dino Papararo, 2020/04/29
- Re: R: About hardfloat in ppc, Alex Bennée, 2020/04/29
- Re: R: About hardfloat in ppc, Yonggang Luo, 2020/04/29
- Re: R: About hardfloat in ppc, Alex Bennée, 2020/04/29
- R: R: About hardfloat in ppc, Dino Papararo, 2020/04/29
- Re: R: About hardfloat in ppc, Peter Maydell, 2020/04/29
- Re: R: R: About hardfloat in ppc,
Alex Bennée <=
- Re: R: R: About hardfloat in ppc, Yonggang Luo, 2020/04/29
- Re: R: R: About hardfloat in ppc, Richard Henderson, 2020/04/29
- Re: R: R: About hardfloat in ppc, Yonggang Luo, 2020/04/30
- Re: R: R: About hardfloat in ppc, Alex Bennée, 2020/04/30
- Re: R: R: About hardfloat in ppc, Yonggang Luo, 2020/04/30
- Re: R: R: About hardfloat in ppc, BALATON Zoltan, 2020/04/30
- R: R: R: About hardfloat in ppc, Dino Papararo, 2020/04/30
- Re: About hardfloat in ppc, Programmingkid, 2020/04/30
- Re: About hardfloat in ppc, Yonggang Luo, 2020/04/30
- Re: R: About hardfloat in ppc, Yonggang Luo, 2020/04/29