[Bug 47970] Legends of Runeterra crashes at launch

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47970

Zebediah Figura <z.figura12 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|-unknown                    |ntdll
           Hardware|x86                         |x86-64

--- Comment #6 from Zebediah Figura <z.figura12 at gmail.com> ---
I've pushed all of the changes to Staging except for the one setting SegDs to
SegSs.

Reportedly, the game does in fact demand that SegDs == SegSs in an exception
handler. Ideally we'd like to not have to lie about SegDs (consider e.g.
debuggers), so it would be best that %ds actually is equal to %ss. I'm not
immediately sure what we'd need to do to make that the case. Is setting it once
in init_thread_context() enough, or will the kernel ever touch it later? Is it
correct to set %ds to be equal to %ss in the first place? I can't think of any
reason why not, but it would be nice to have a guarantee from the kernel.

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