RFR: JDK-8163469: aarch32: add support for ARMv6K CPU

[Alex Kashchenko]

Hi Andrey,

On 08/09/2016 02:32 PM, Andrey Petushkov wrote:
> Dear All,
>
> Could you please review the changes made in order to support ARMv6K (e.g. ARM1176 found in RPi1)
> The following is done: fixed support of emitting mov+3*orr when movw+movt is not available. Replaced use of some of the instructions unavailable in v6K with those which are available
> In addition the CPU detection code is rewritten in a way to probe the CPU instead of relying on the information from the OS. This is necessary to support some of the emulation engines which only emulate the CPU but not OS and hence do not provide the correct cpuinfo/auxv data
>
> http://cr.openjdk.java.net/~apetushkov/8163469/webrev/ <http://cr.openjdk.java.net/~apetushkov/8163469/webrev/>
>
> Thanks,
> Andrey
>
> PS. Alex, please excuse me for the delay, vacation time is the reason

Thanks for this change, it is great to have RPi Zero/A+/B+ supported!

The build worked for me on B+, currently doing bootstrap rebuild, QEMU 
testing will follow.

-- 
-Alex