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clean dos extender executable format (Developers)

posted by kerravon, Ligao, Free World North, 09.01.2023, 02:32

> I am talk from historic point of view.
> Initially, aout was a 16-bit file format (like Unix System V age) and was
> extended to 32-bit later. And more later, was split to Linux-aout and
> BSD-aout.
>
> So, all 3 type of aout have no segment relocations.
For what reason do you need "segment relocations"?

It just occurred to me - we might be talking cross-purposes.

Robert used a.out for object code format, but he still
necessarily produces standard MZ executables.

There was indeed an issue using a.out as object format
instead of OMF, but it wasn't a big deal.

Assembler code couldn't use the "seg" keyword, and
instead it was necessary to define a "dd" to create
an external reference, and that could be used to
extract the segment information.

Which may well be a nicer thing to do, to simplify
things.

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