Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!rice!sun-spots-request
From: collberg@dna.lth.se (Christian S. Collberg)
Newsgroups: comp.sys.sun
Subject: mmap (Memory Map) and 407 executables - Do they work together?
Keywords: SunOS
Message-ID: <6042@brazos.Rice.edu>
Date: 23 Mar 90 16:39:58 GMT
Sender: root@rice.edu
Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 93, message 4

I am trying to do memory mapped IO in a 407 executable (the old executable
format) and am getting strange results, namely the address returned by the
mmap function being invalid. When I run the same program as a 413
executable everything works fine. 

I use the options PROT_WRITE, PROT_READ, and MAP_SHARED. I am running
Sun's OS 4.0.3c on a SUN 3/80.

Am I missing something obvious or am I just doing something very wrong?

Thanks,
Chris Collberg
collberg@dna.lth.se