https://bugs.winehq.org/show_bug.cgi?id=38780
--- Comment #20 from Zebediah Figura z.figura12@gmail.com --- (In reply to Martin Storsjö from comment #19)
Currently I'm running with this patch: https://source.winehq.org/patches/data/137759
This pretty much gets the same effect as the suggested compiler handling for prologues/epilogues, but without compiler support - but it doesn't fix callbacks either. This (together with https://source.winehq.org/patches/data/135165) has been a good enough workaround for me so far though.
Sure, I'd just like to see this fixed in a generic way.
Is there any obvious infeasibility about my proposal #2? It's weird, but seems plausible, and maybe wouldn't even be that hard, if we can leverage the same sort of code that -fcall-used-reg uses [disclaimer: I am not a compiler enthusiast yet, either]. Plus it means we can use inline TEB access in Wine code :-)