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From: ddb@ns.network.com (David Dyer-Bennet)
Newsgroups: comp.arch
Subject: Re: ABI and growth
Message-ID: <1990Jan16.220508.3882@ns.network.com>
Date: 16 Jan 90 22:05:08 GMT
References: <6186@celit.fps.com> <2020@crdos1.crd.ge.COM> <6197@internal.Apple.COM> <5344@blake.acs.washington.edu>
Sender: news@ns.network.com (David Dyer-Bennet)
Reply-To: ddb@ns.UUCP (David Dyer-Bennet)
Organization: Terrabit Software
Lines: 20

In article <5344@blake.acs.washington.edu> mrc@Tomobiki-Cho.CAC.Washington.EDU (Mark Crispin) writes:
:In article <6197@internal.Apple.COM> desnoyer@apple.com (Peter Desnoyers) writes:
:>This sounds like a variation on run-time loading. I'm not sure of the 
:>specifics, but I believe some variation on {link in call to loader, load 
:>function on first call, patch stub to jump to loaded function} is used in 
:>[...] TOPS-20.
:
:Not that I know of, and I was a TOPS-20 OS programmer for 10 years.

I did implement something like this for TOPS-20 dynamic library
support, which was actually used with the TOPS-20 version of Datatrieve
(did that ever ship?) but not, so far as I know, with anything else.
It didn't require any changes in the OS (it used the PDV facility that
appeared in version whatever).  Each dynamic library was loaded into
its own segment (it started out as a one-weekend hack, ok?).
-- 
David Dyer-Bennet, ddb@terrabit.fidonet.org
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