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From: rapa@well.sf.ca.us (Ralph A. Phraner)
Newsgroups: comp.sys.next,comp.lang.scheme,comp.os.mach
Subject: ELK on NeXT 2.0
Message-ID: <23326@well.sf.ca.us>
Date: 25 Feb 91 20:12:50 GMT
Sender: rapa@well.sf.ca.us
Distribution: na
Organization: Ralph A. Phraner & Assoc.
Lines: 23


	Getting ELK 1.0 to dump a binary executable file and dynamically
load binary objects on NeXT 2.0 requires rewriting the code to change
the usage of the BSD a.out object layout to Mach format.  In NeXT 2.0
Mach the loader symbolic crutches _end, _etext and _edata have apparently
been removed.

	If anyone has already ported ELK to the NeXT or developed these
facilities, a copy of the source diffs by email would save me some time.
Also, it would be useful to hear experiences of those who have ported
similar projects from BSD to Mach, especially in regard to strategies
employed in replacing uses of the exec structure, brk and sbrk with
Mach constructs.

	If I do the port, I'll send the diffs to Oliver Laumann and,
if there is sufficient interest, publish them to comp.lang.scheme.

	By the way, does anyone know if ELK release 1.0 is the latest
and greatest?


Ralph Phraner
(rapa@well.sf.ca.us)


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