RFR(XS): Provide information when hitting a HaltNode for architectures other than x86

[Andrew Haley]

On 27/05/2020 21:09, Liu, Xin wrote:
> Yes, it's better.  I compare two stacktraces and cframes in the previous stacktrace indeed disturb users from understanding their own problems.
> I reviewed Andrew's webrev.  It looks good to me.

> I am happy to see that you solve rscratch1 clobber problem in such
> elegant way!

Great, thanks.

> Just one thing:  for this instruction emit_int64((intptr_t)msg),  can we safely say a pointer is always 64-bit on aarch64?

That's a fair point. I'll change it: there's no need for that code to
depend on pointer size.

> According to arm document, in theory, aarch64 has the ILP32 data
> model, but I don't think we ever use ILP32 before on aarch64.

If anyone ever makes IPL32 work, we'll be happy to fix HotSpot to run
on it.

> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0490a/ar01s01.html
>
> May I ask Andrew to sponsor my patch when you push JDK-8245986?
> Now it become trivial.  http://cr.openjdk.java.net/~xliu/8230552/02/webrev/


-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671