[OpenBIOS] [RFC 3/3] SPARC32/64: Mimic Sun's OBP behaviour if a divide by zero occurs.

[Mark Cave-Ayland]

On 07/01/13 16:47, Artyom Tarasenko wrote:

Hi Artyom,

Happy New Year!

>> As reported by Artyom Tarasenko, if anything is divided by zero then we should
>> return no value:
>>
>> 0>  4 2 / u. 2  ok
>> 0>  2 0 /  ok
>
> NAK. Either my memory is cheating on me or there is some other Artyom
> Tarasenko who reported it. OBP produces an exception in case of
> division by zero.

Here is the post I referenced sent by your imposter: 
http://lists.openbios.org/pipermail/openbios/2011-August/006626.html.

Also as noted in the first patch's commit message, most of the OpenBIOS 
platforms can't call Forth from a trap :( SPARC64 is the only exception 
here as I had to write something to enable va>tte-data to be called from 
an MMU trap, but that was just one platform and took me in the order of 
months. Hence why the patch takes the approach it does :/

> (This time adding you to cc, since the mailing list bounces my mails
> saying my emai is graylisted - whatever it means).

Graylisting means that the first email from your domain (@gmail.com) in 
every period (say 24 hours) is temporarily delayed to prevent spam 
overload :)


ATB,

Mark.