[Bug 38780] AArch64 platforms: register X18 (TEB) must remain reserved for Wine to run 64-bit ARM Windows applications ( Distro aarch64 toolchains need '-ffixed-x18' default, loader/libc/userland )

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=38780

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

           What    |Removed                     |Added
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                 CC|                            |z.figura12 at gmail.com

--- Comment #13 from Zebediah Figura <z.figura12 at gmail.com> ---
Is this something we could fix entirely on the Wine side? I'm not an ARM
enthusiast (yet), but I guess we could do one of two things:

(1) unconditionally save and restore x18 in the function prologue, and also
restore it around WINAPI callbacks;
(2) save and restore it around all inferior function calls.

Both would require modification to GCC, I think, but maybe would be more
feasible than trying to get distributions to compile everything with
-ffixed-x18?

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