GetTitleGpd should work fine for what we're using it for here... it could be a good idea to keep an instance of the current SpaFile of the running title and have a GetTitleSpa that returns that though, since I think some stuff like XamReadString might eventually need access to SPA data, not really sure yet though.
Disclaimer: On old dash it causes memleak (slight),
newer dashboards allocates them only once which is solution for that.
Ps. If anyone have easy solution please implement it. Cheers
Stubs: DmGetXbeInfo, DmIsDebuggerPresent, DmRegisterCommandProcessor, DmRegisterCommandProcessorEx
This helps progress some debug builds of games, DmGetXboxName error codes are based on what some games seem to expect from it.
Will probably be a good idea to move most of this to xbdm_info.cc soon.
Couldn't find a way to get bitfields & byte-swapping to play well together, so this was the best I could come up with... at least the proper version numbers will show in the log file now :)
This should be safe to do hopefully, most errors happen before any part of the XEX is modified, and the errors that can happen after modification should be very rare/impossible thanks to the earlier checks.
It might be good to write up some way to revert any changes though...
Happy new year! Here's my first commit of the 2020s :)
With these fixes, Halo 3 Epsilon will now write cached map data & other things (autosaves/datamine...) to the cache0/cache1 partitions, (as long as mount_cache cvar is set)
(Halo 3 retail will also write some things to cache with this, but oddly doesn't cache map stuff... which is strange because Epsilon was built only a day or two after the retail build, so I'm not sure why it'd work differently...
Maybe retail needs a TU applied for it to work or something like that)
Other games should hopefully work with cache now too (AFAIK the problem was in SDK library code, that a lot of games probably share)
No idea if this will actually improve anything though, but at least things will work closer to what games expect :)
The way this works is by tricking the cache-partition code (staticly linked into the game exe) into thinking that the Partition0/Cache0/Cache1 devices are valid.
To do that I made another kind of VFS device, the NullDevice, which just takes in a list of paths to handle.
Whenever an IO request is made to one of these paths, the NullDevice can simply pretend to the game that everything was successful, which satisfies the requirements needed for caching.
It also makes use of another trick: setting TitleInsecureCacheDrive XEX permission, which seems to skip a huge chunk of cache-init code (STFC filesystem device registration & stuff like that)
I'm not sure if this would work with every single revision of the STFC/cache code though...
At least in Halo 3 the retail code will handle the TitleInsecureCacheDrive case for us fine, but maybe older/more recent versions don't include functionality for it, need to look into it some more.
(I did try an impl. without needing this permission months ago, got pretty far with it but got caught on one tiny issue that I couldn't figure out... too bad I didn't find out about this permission earlier!)
emoose