Re: [qemu-s390x] [PATCH RFC 2/2] tests/tcg: target/s390: Add test for VECTOR LOAD GR FROM VR ELEMENT

[David Hildenbrand]

On 28.02.19 01:24, Richard Henderson wrote:
> On 2/27/19 1:40 PM, Alex Bennée wrote:
>> And crucially have nice regular sized instructions. Is that not an option?
> 
> s390 insns are {2,4,6} bytes.  I don't think that there's an easy way to pick
> out the hw status codes that would give the ilen of the faulting insn.
> 

We would have to read the faulting instruction to determine based on the
two leftmost bits the ilen. But I don't consider that approach much
cleaner compared to signal + setjmp (signal + sigsetjmp after I fixed it
;) )

Thanks for the pointer though, Alex

> 
> r~
> 


-- 

Thanks,

David / dhildenb