Re:Tales of the M1 GPU
by rjzzleep on Tuesday November 29, 2022 @09:15PM
(#33796106)
Of course it's possible in either. By the way, Mac drivers are in fact written in a subset of C++. At least they used to be, maybe that has changed.
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They are written in a strange subset of C++ with its own inheritance system and currency classes.
In NeXTStep they were written in ObjC, and probably should've stayed that way.
> They are written in a strange subset of C++ with its own inheritance system and currency classes.
Can someone explain? Is there something other than DriverKit, which seems to be C++?
I suspect they’re either conflating things with ObjectiveC or FireBloom (https://saaramar.github.io/iBoot_firebloom/)
Both would sort of fit those descriptions I guess if one were to squint.
Oh interesting. Thanks for the link
You have to go back to IO Kit, Driver Kit is the new one in userspace.
https://developer.apple.com/documentation/iokit
Which is how the Objective-C framework for NeXTSTEP drivers used to be called,
http://www.nextcomputers.org/NeXTfiles/Docs/NeXTStep/3.3/nd/...
Just like UNIX kernel code is a strange subset of C.
I always find strange how "kernel C" is C, even though ISO C would bork in kernel space, but doing a similar C++ subset is pointed out as not being C++.