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From: cheng@ntvax.UUCP
Newsgroups: comp.unix.wizards
Subject: Re: Dynamic function loading
Message-ID: <33200001@ntvax>
Date: Fri, 17-Apr-87 13:38:00 EST
Article-I.D.: ntvax.33200001
Posted: Fri Apr 17 13:38:00 1987
Date-Received: Sun, 19-Apr-87 20:42:51 EST
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Nf-From: ntvax.UUCP!cheng    Apr 17 12:38:00 1987


/* Written 12:35 pm  Apr 10, 1987 by rdin.UUCP!perl in ntvax:comp.unix.wizards */
/* ---------- "Dynamic function loading" ---------- */
I posted this request several months ago but our news reception went
flakey after the newsgroup reorganization and if I got any responses,
my system lost them.  So, if you have any information on this, please
let me know, even if you already sent it to me.

A number of people have pointed out that UNIX has the ability to link
functions into a running program.  Pointers have been given to look at
the documentation for the -A and -T options of ld(1).  Well, I and a
number of other netters have stared at the documentation as long as our
little brains can stand and the bright flash of light that was promised
hasn't come to us.  I know someone out there knows how this works since
Franz Lisp does it.  I can dig that you use "ld -A -T" to create a file
that can be loaded into a specific location within a running process,
but what do you do to do the actual loading?  Exec? What strange
arguments or calling sequences do I have to know about?

As I have already recieved a number of responses requesting the results
of this query, I will post a summary.

Thank you.

Robert Perlberg
Resource Dynamics Inc.
New York
{philabs|delftcc}!rdin!perl
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