Everything that we care about supports the unixlib path now. Also turns
out we were doing `svc #0` on Windows when unixlib didn't exist which is
kind of funny.
Remove the legacy hacky path as it is no longer necessary.
Centralizes all the nasty behaviour that will end up breaking when WINE
eventually turns on userspace syscall dispatch. Pushes all of the logic
in to the UnixLib. Support both paths until everyone is migrated to
supporting the UnixLib, then we can delete the bit of code duplication
between the PE side and UnixLib side.
Helpful that everything that gets punched through the UnixLib is
optional, so worst case some optional bits can break for a while.
Including fallback to non-unixlib path because we need to support both.
Showcases how these are going to be implemented without throwing the
entire world at it right away. Next PR will be implementing the
remaining four necessary unixlib handlers that we will require:
- Kernel unaligned atomic control
- shm_stats thing
- madvise operation
- prctl vma naming
Currently does nothing other than load it (as the library also doesn't
do anything yet). Ensured it was working by temporarily creating a test
entrypoint and doing `Call` on to it.
Next step after this is to reimplement some of the nasty hacks FEX is
doing inside the unixlib code itself.
Ryan Houdek