RFR: 8248404: AArch64: Remove uses of long and unsigned long [v2]

[Andrew Haley]

On Tue, 11 Jan 2022 16:06:33 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Yes, I changed this and wasn't really sure how to fix it better.  I'd love if Address had a unit64_t argument but all the callers that just passed 0 wouldn't compile.  The code is like that in the x86 version. So I thought that'd be safe.
>
> Well, I'm not convinced the x86 version is safe, really. It probably is, but the checked_cast costs nothing in production.

Actually, thinking some more, I can see no guarantee that this `Address` is valid either. So I'm going to change my mind.

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PR: https://git.openjdk.java.net/jdk/pull/7023