Re: kernel fission was: msdos/umsdos support?

[Andru Luvisi]

On Tue, 9 Feb 1999, David Given wrote:
[snip]
> to call a function in a 
> driver all you have to know is the driver's segment info (SS/DS and CS) and 
> the entry point. For the driver to call a function in the kernel it'd have to 
> know the same; it's probably easier to use an interrupt for that direction.
[snip]

what if the module had a list of function pointers at the begining of its
address space?  then a snippit of org 0 asm code (well, actually just
data) could be used within each module to set up the pointers properly in
a 16 bit link, and the same asm stubs in the kernel would work for any
module of a given type.  maybe with some cleverness, there could be only
one stub and a bunch of macros or wrappers for accessing it, to make
porting to other platforms easier.

andru