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From: Brian Drummond <brian@shapes.demon.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: Runtime startup code for the GNAT Runtime...and a bit of humble
 pie.
Date: Thu, 21 Mar 2013 16:39:34 +0000 (UTC)
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Date: 2013-03-21T16:39:34+00:00
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On Wed, 20 Mar 2013 07:17:47 -0700, Lucretia wrote:

> On Wednesday, 20 March 2013 00:54:38 UTC, Simon Clubley  wrote:

>>  It's a major exercise to even
>> pull together all the information you need to build a model of how GNAT
>> works and how it is structured internally.
> 
> Right. There is the Javier Miranda *thesis* - that word is important.
> 
> Basically, this thesis outlines how the GNAT RTS works, but it's out of
> date and it's not a "how to" style guide, it's a "how it was" guide. The
> fact that it's a thesis as well means it's aimed at academia, not real
> life.
> 
> Another point to make is that AdaCore hired him and there is no update
> to the doc.

This 
http://www2.adacore.com/gap-static/GNAT_Book/html/node20.htm
would appear to be an update of the thesis, containing a good deal of the 
same text and diagrams.

The front page indicates it's from 2004, so only slightly better!
http://www2.adacore.com/gap-static/GNAT_Book/html/main.htm

They are probably better than nothing, as a guide to understanding the 
sources.

- Brian