[PATCH] mscoree: Implement VTable fixup for x86_64 architecture.

[Vincent Povirk]

> Frankly I did not intend fixing mono compiler and modifying mono build
> environment in a way that would look like a good patch to send. I
> presume it is rather long way to go to get it done and accepted, while I
> do not deal with .NET/mono in my everyday life.

For loading class libraries, the right solution is to fix Wine so that
it can load pure .NET images in non-x86 processes, using the
_CorValidateImage hook. That shouldn't require changes to Mono.

It sounded like you had also found a bug in the Mono code generator
which could be useful to fix upstream. If you don't want to take the
time to get the fix in, maybe you could file a bug with the Mono
project containing an example of IL code that triggers it?

> Do you think there is any way we can test the current (probably much
> simpler) VTable issue? I could send, for instance, a prebuilt MSI with
> these things hotfixed.

I think I have sufficient information now to test this, but I need
some time try these things and hopefully catch up with what you've
done.

> BTW my real application (its .net parts) worked after all these fixes.
> There is still some crash both in my app and short test on exit from
> application on mono assembly deinit, but this is likely a quite separate
> issue and happens in 32 bit also.

Cool. If you have a testcase with source code that triggers the crash
on 32-bit, I can look into it. Would you be willing to file a bug for
this?