Not sure how this ever managed to work before this point actually. We
were returning a 64-bit pointer when we were supposed to be returning a
32-bit pointer.
Seemingly this was overwriting the len stack variable so then Steam's
chromehtml.so library was checking the results thoroughly and detecting
that the robust list wasn't setup before this point.
SOMEHOW this worked if FEX was built locally, but broke from the PPA
builders? Not sure how that happened, but theoretically on the next PPA
release this is now fixed and Steam can run from those builds.
Also when setting the robust list, make sure to return EINVAL if the
size doesn't match what's expected there.
This can be done in an OS agnostic fashion. FEXCore knows the details of
its JIT and should be done in FEXCore itself.
The frontend is only necessary to inform FEXCore where the fault occured
and provide the array of GPRs for accessing and modifying the signal
state.
This is necessary for supporting both Linux and Wine signal contexts
with their unaligned access handlers.
This is a very OS specific operation and it living in FEXCore doesn't
make much sense. This still requires some strong collaboration between
FEXCore and the frontend but it is now split between the locations.
There's still a bit more cleanup work that can be done after this is
merged, but we need to get this burning fire out of the way.
This is necessary for llvm-mingw, this requires all previous PRs to be
merged first.
After this is merged, most of the llvm-mingw work is complete, just some
minor cleanups.
To be merged first:
- #2602
- #2604
- #2605
- #2607
- #2610
- #2615
- #2619
- #2621
- #2622
- #2624
- #2625
- #2626
- #2627
- #2628
- #2629
Ryan Houdek