[OpenBIOS] [commit] r1078 - trunk/openbios-devel/arch/ppc/qemu

[Programmingkid]

On Jan 10, 2013, at 5:24 PM, Olivier DANET wrote:

>>  De : Mark Cave-Ayland
>>  Envoyés : 10.01.13 20:54
>>  Objet : Re: [OpenBIOS] [commit] r1078 - trunk/openbios-devel/arch/ppc/qemu
>> 
>>   
>> On 10/01/13 18:25, Programmingkid wrote:
>> 
>>> On Jan 9, 2013, at 7:27 PM, Mark Cave-Ayland wrote:
>>> 
>>>> (this is what I get with the patch I just posted applied):
>>>> 
>>>> 0> here 10 0 fill ok
>>>> 0> here 4 44332211 filll ok
>>>> 0> here 8 dump
>>>> fff503c0 44 33 22 11 00 00 00 00 00 00 00 00 00 00 00 00 D3".............
>>> 
>>> Same as Open Firmware.
>>> 
>>> 
>>>> 0> here 5 44332211 filll ok
>>>> 0> here 8 dump
>>>> fff503c0 44 33 22 11 44 00 00 00 00 00 00 00 00 00 00 00 D3".D...........
>>> 
>>> This output in incorrect. This is what Open Firmware outputs:
>>> ff94d75c: 44 33 22 11 44 33 22 11
>>> 
>>> 
>>>> 0> here 6 44332211 filll ok
>>>> 0> here 8 dump
>>>> fff503c0 44 33 22 11 44 33 00 00 00 00 00 00 00 00 00 00 D3".D3..........
>>> 
>>> This output is also incorrect. This is what Open Firmware outputs:
>>> ff94d75c: 44 33 22 11 44 33 22 11
>>> 
>>> 
>>>> 0> here 7 44332211 filll ok
>>>> 0> here 8 dump
>>>> fff503c0 44 33 22 11 44 33 22 00 00 00 00 00 00 00 00 00 D3".D3".........
>>> 
>>> This output is incorrect. This is what Open Firmware outputs:
>>> ff94d75c: 44 33 22 11 44 33 22 11
>>> 
>>> 
>>>> 0> here 8 44332211 filll ok
>>>> 0> here 8 dump
>>>> fff503c0 44 33 22 11 44 33 22 11 00 00 00 00 00 00 00 00 D3".D3"........
>> 
>> Hmmm well that looks as if it just rounds up to the next 4-byte word, 
>> which is like the last patch but without the extra byte handling on the 
>> end. Segher - can you confirm this on your hardware?
>> 
>> 
>> ATB,
>> 
>> Mark.
> 
> Out of curiosity, I have tried these sequences on a SparcStation5 and a PowerPC G3 iBook
> Both get the same result.
> 
> here 4 44332211 fill
>> 11 11 11 11
> 
> here 5 44332211 fill
>> 11 11 11 11 11
> 
> here 8 44332211 fill
>> 11 11 11 11 11 11 11 11
> 
> The lowest significant byte is repeated and the lenght is the byte count.
> Hope this help ...
> 
> Olivier

Thank you for trying, but we are testing the filll (3 L's) word.