Re: [PATCH v5 0/1] MR8466: ntdll: Also restore rbp before calling user mode callback.

[Yuxuan Shui (＠yshui)]

On Sat Jul  5 01:54:30 2025 +0000, Yuxuan Shui wrote:
> > compiler from using those immdeiately after you modified them?
>
> that's fair. this is meant to be a quick test, and many registers did
> retain 0xdeadbeef.
> > And breakage on function exit.
>
> that's an old comment i forgot to delete. that happened when i was using
> RtlUnwindEx and was actually unwinding out of the syscall.

Actually, [looks like](https://testbot.winehq.org/JobDetails.pl?Key=159099) all non-volatile registers are actually all _zeroed_ before calling user callback.