> On Sunday, October 18, 2015 at 8:23:32 PM UTC-4, Jeffrey Walton wrote:
>>
>>
>> The only thing left to do with it is
>>> a) verify that I actually did the opcode right [1]
>>>
>>
>> By the way, I think RDSEED detection code should look similar to the
>> following. Also see the discussion of Highest Function level at
>> https://en.wikipedia.org/wiki/CPUID#EAX.3D0:_Highest_Function_Parameter
>> ...
>>
>
> Here's what the RDSEED detection code ended up being. AMD does not offer
> RDSEED, so we need to filter the call for Intel processors.
>
> I think the run-time detection code should be in cpu.h and cpu.cpp and not
> in rdrand.h and rdrand.cpp. There is already AMD / Intel and feature
> detection code and our code would fit perfectly there. The outside (of
> cpu.XXX) could access via HasRdRand() and HasRdSeed().
>
Yes, agreed. We have to be careful of versioning requirements at the
moment, so we can't break CPU.{h|cpp}.
That will be one of the first changes made when we can break things.
Jeff
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