[OpenBIOS] SOLVED: the mystery of Solaris on SPARC32 and the missing Forth arguments

[Artyom Tarasenko]

On Fri, Oct 29, 2010 at 10:58 PM, Blue Swirl <blauwirbel at gmail.com> wrote:
> On Fri, Oct 29, 2010 at 8:42 PM, Artyom Tarasenko <atar4qemu at gmail.com> wrote:
>> On Fri, Oct 29, 2010 at 10:28 PM, Mark Cave-Ayland
>> <mark.cave-ayland at siriusit.co.uk> wrote:
>>> Blue Swirl wrote:
>>>
>>>>> So it would be useful to have someone who understands both SPARC32 and
>>>>> qemu
>>>>> to take a look (hint, hint!) ;)
>>
>>>> Trap 0x29 is TT_DATA_ACCESS, invoked on access to unassigned memory by
>>>> QEMU. Perhaps enabling DEBUG_UNASSIGNED in target-sparc/op_helper.c
>>>> may reveal something.
>>>>
>>>> It has been suspected that QEMU may be a bit too trigger happy with
>>>> unassigned memory accesses. There may also be an undocumented device,
>>>> or Solaris just tries to access a device which does not exist on SS-5.
>>>
>>> Okay. With that DEBUG_UNASSIGNED enabled I get the following message as the
>>> trap is invoked:
>>>
>>> Unassigned mem write access of 4 bytes to ffffffffffff0ecc from f004127c
>>
>> No, it's not the same as with OBP. Btw I have a fix for the OBP fault,
>> but it waits till someone commits the
>> promised refactoring.
>
> Which refactoring?

le/esp dma split.


-- 
Regards,
Artyom Tarasenko

solaris/sparc under qemu blog: http://tyom.blogspot.com/