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Re: [qemu-s390x] [Qemu-devel] [PATCH v1 04/15] s390x/tcg: Fix parts of I

From: Richard Henderson
Subject: Re: [qemu-s390x] [Qemu-devel] [PATCH v1 04/15] s390x/tcg: Fix parts of IEEE exception handling
Date: Tue, 12 Feb 2019 10:13:07 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 2/12/19 3:02 AM, David Hildenbrand wrote:
> Many things are wrong and some parts cannot be fixed yet. Fix what we
> can fix easily and add two FIXMEs:
> The fpc flags are not updated in case an exception is actually injected.
> Inexact exceptions have to be handled separately, as they are the only
> exceptions that can coexist with underflows and overflows.
> I reread the horribly complicated chapters in the PoP at least 5 times
> and hope I got it right.
> For references:
> - z14 PoP, 9-18, "IEEE Exceptions"
> - z14 PoP, 19-9, Figure 19-8
> Signed-off-by: David Hildenbrand <address@hidden>
> ---
>  target/s390x/fpu_helper.c | 38 ++++++++++++++++++++++++++++++++------
>  1 file changed, 32 insertions(+), 6 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


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