[Bug 45642] Chrome/ Chromium sandbox needs x86-64 syscall thunks to match Windows

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45642

--- Comment #17 from Fabian Maurer <dark.shadow4 at web.de> ---
Created attachment 64559
  --> https://bugs.winehq.org/attachment.cgi?id=64559
Workaround for user shared data issue

Ah, I misunderstood. I though memory permissions could be set more granular,
but if it always affects whole pages this would be too expensive...

How about moving the SystemCallPad flag somewhere else? I attached a PoC, this
also makes chrome happy. We just need to set some fixed address to the value 1
and refer to it in the syscall thunks. Would this be feasable?

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