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From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.unix.wizards
Subject: Re: br & cvec (in VAX-device-drivers)
Message-ID: <16479@mimsy.UUCP>
Date: 22 Mar 89 03:24:08 GMT
References: <20718@santra.UUCP>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 12

In article <20718@santra.UUCP> alo@kampi.hut.fi (Antti Louko) writes:
>What are the reasons for using registers r11 (br) and r10 (cvec) as
>global variables in the probe routines of VAX-BSD device-drivers.
>I think there must be some historical reasons for this practise.

Probably the original authors of autoconf (?<someone whose name I have
forgotten> and Michael C. Toy) just liked it that way.  4.4BSD will
probably use global variables.  (The source on okeeffe currently uses
both globals and r11/r10.  Yech.)
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris