This is enough to survive emx.dll intialization and a printf("hello world")
mainline, but note that we need to properly implement DosQueryHType()
before EMX's printf() will work, though (as it currently thinks stdout isn't
open), so we're not quite through a proper C Hello World test yet.
Eventually, we'll maybe need to set the FS register to be a proper TIB pointer,
but I'm mostly hoping that everything else was well-behaved enough to always
use DosGetInfoBlocks() instead. Yeah, right.
Wanted to do this now before it gets out of hand.
Ideally, this can be used for a Winelib-like option eventually, too, where you
don't load OS/2 binaries at all but rather compile and link your OS/2-based
source code against this API reimplementation.
It looks like most of the remaining work for that is filling in dozens of
OS/2 APIs that EMX uses at startup just so we can get to our single
printf() call. :)
For one, they generally have a base address of 0x0, but also, we're probably
going to load/parse these into a hashtable somewhere in the loader
and use that for resource lookups instead of parsing LX binaries during
DosGetResource(), and that is more of a malloc() thing than an mmap() thing.
Ryan C. Gordon