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Re: [Qemu-devel] [PATCH v2] SPARC: Add and use CPU_FEATURE_CASA
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From: |
Fabien Chouteau |
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Subject: |
Re: [Qemu-devel] [PATCH v2] SPARC: Add and use CPU_FEATURE_CASA |
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Date: |
Fri, 14 Feb 2014 14:44:38 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
On 02/14/2014 09:41 AM, Sebastian Huber wrote:
> On 2014-02-13 16:50, Fabien Chouteau wrote:
>>
>> This ASI 0x80 is really defined nowhere in Leon3 not even in the sources :)
>> Maybe there's a bug in binutils... Did you try to run this program on a real
>> board?
>
> Yes, I tested it on a NGMP board with a LEON4 processor (documentation is the
> same for CAS as in LEON3).
>
Alright so we can use the patch as is.
> The ASI 0x80 is defined in the SPARC V9 manual, Table 12—Address Space
> Identifiers (ASIs). Here we have:
>
> 0x80, ASI_PRIMARY, Unrestricted access, Primary address space
>
> So should I change it to use User Data Access?
>
No I think supervisor data access closer to the definition in Leon3's doc.