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Re: [Qemu-ppc] [PATCH 0/3] target/ppc: floating point multiply-add fixes


From: Programmingkid
Subject: Re: [Qemu-ppc] [PATCH 0/3] target/ppc: floating point multiply-add fixes
Date: Sun, 5 Mar 2017 01:03:26 -0500

On Mar 5, 2017, at 12:27 AM, Nikunj A Dadhania wrote:

> Programmingkid <address@hidden> writes:
> 
>> On Mar 4, 2017, at 8:53 AM, Nikunj A Dadhania wrote:
>> 
>>> G 3 <address@hidden> writes:
>>> 
>>>> On Mar 3, 2017, at 4:59 AM, address@hidden wrote:
>>>> 
>>>> Is there a program that could be used to test the floating point  
>>>> instructions in QEMU for accuracy? 
>>> 
>>> I am not aware of any such program. I do the unit test of the
>>> instruction and then use risu to verify with either real hardware or
>>> system simulator.
>> 
>> risu works on PowerPC? 
> 
> Yes, Ziviani ported it.
> 
>> https://wiki.linaro.org/PeterMaydell/Risu
>> This page says its only for ARM.
> 
> Oh, that page would need updation.
> 
> 
>> I was thinking about your patches. They comply with ISA 3.0, but do
>> they comply with older PowerPC chips like the PowerPC 750?
> 
> We have added older instructions, and its simple to add missing
> instructions.

This risu program looks really helpful. Would this work for a PowerPC 750? 



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