RFR: 8214128: arm32: not aligned SP on entry call

[Boris Ulasevich]

Thank you, Dmitry!

On 02.12.2018 21:45, Dmitry Samersoff wrote:
> Boris,
> 
> Looks good to me.
> 
> -Dmitry
> 
> 
> On 29.11.2018 16:43, Boris Ulasevich wrote:
>> Hi all,
>>
>> Please review arm32 stack alignment fix.
>>
>> http://bugs.openjdk.java.net/browse/JDK-8214128
>> http://cr.openjdk.java.net/~bulasevich/8214128/webrev.01
>>
>> On arm32 native call with unaligned stack (SP register) does not crash
>> immediately, but causes problems far from the point of the entry point.
>> In the particular case the problem is in printf malfunction far below on
>> the C call stack.
>>
>> call() was changed to call_VM_leaf() variant because the latter one
>> aligns SP. Save_last_java_pc parameter in set_last_Java_frame() was set
>> to true to help vframe unpacker to find CodeBlob.
>>
>> Tested with jtreg :tier1.
>>
>> Thanks,
>> Boris
>