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From: lamaster@ames.arc.nasa.gov (Hugh LaMaster)
Newsgroups: comp.arch
Subject: Re: Self-modifying code
Message-ID: <33334@ames.arc.nasa.gov>
Date: 10 Oct 89 20:12:16 GMT
References: <1080@mipos3.intel.com> <4415@bd.sei.cmu.edu>
Sender: usenet@ames.arc.nasa.gov
Organization: NASA - Ames Research Center
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In article <4415@bd.sei.cmu.edu> firth@sei.cmu.edu (Robert Firth) writes:

>into and obeyed as code.  A more sophisticated system allows the
>dynamic replacement of code bodies by alternative versions; thus, if
>during debugging you suspect the new version of "munge()" is bad, you

Anybody else remember the TSS operating system, which let a system
programmer test modified system routines on his own task on the fly
without affecting other tasks?  Of course, VM can do this, too, but
try to find a Unix system with a *real* dynamic loader like this :-)


  Hugh LaMaster, m/s 233-9,  UUCP ames!lamaster
  NASA Ames Research Center  ARPA lamaster@ames.arc.nasa.gov
  Moffett Field, CA 94035     
  Phone:  (415)694-6117