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Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered()
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function |
Date: |
Wed, 13 Apr 2011 08:38:26 -0700 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110307 Fedora/3.1.9-0.39.b3pre.fc14 Thunderbird/3.1.9 |
[ Odd, the original thread doesn't seem to have arrived here. ]
On 04/13/2011 07:52 AM, Peter Maydell wrote:
> So I think you want the _quiet version here. (And helper_cmpteq
> needs to use float64_eq_quiet rather than float64_eq.)
Yes, the _quiet version is what's needed for all comparisons.
For the record, the goal for QEMU should not be to emulate the
hardware exactly, but to emulate the entire HW+OS system. Thus
when looking at Table B-2 one should look at the OS Completion
Handler and User Signal Handler columns.
That's for /s qualified instructions anyway. For non-ieee code
we take care to inject the extra traps via helper_ieee_input*.
(It looks like some of the Alpha code can be cleaned up a bit.
I don't recall flush_inputs_to_zero option being there before,
and we do that by hand in helper_ieee_input*.)
r~
- [Qemu-devel] [PATCH 00/19] softfloat and FPU fixes/improvements, Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 05/19] target-i386: add floatx_{add, mul, sub} and use them, Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 07/19] softfloat-native: add float*_unordered_quiet() functions, Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 06/19] softfloat: add float*_unordered_{, quiet}() functions, Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 15/19] target-arm: fix wrong usage of floatx80_eq_quiet(), Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Aurelien Jarno, 2011/04/12
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Peter Maydell, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Richard Henderson, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Peter Maydell, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Richard Henderson, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Peter Maydell, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Richard Henderson, 2011/04/14
[Qemu-devel] [PATCH 11/19] softfloat: rename float*_eq() into float*_eq_quiet(), Aurelien Jarno, 2011/04/12