From: rswhite@cacd.rockwell.com (Robert S. White)
Subject: Re: Importing C Structures
Date: 23 Mar 1995 18:55:02 GMT
Date: 1995-03-23T18:55:02+00:00 [thread overview]
Message-ID: <3ksg66$h1c@newssvr.cacd.rockwell.com> (raw)
In-Reply-To: VLADIMIR.95Mar22235527@speedy.intrepid.com
In article <VLADIMIR.95Mar22235527@speedy.intrepid.com>,
vladimir@speedy.intrepid.com says...
>
>If there is some some struct that you need to map to Ada, it should be
>farily straightforward. i.e.
> - Vladimir
Do you have a clean way to handle hardware registers that have one
meaning when you read them and another when you write to them with
nice seperate names for each type of usage? I know "use at" for
Ada 83 can overide this but it seems to be not in the spirit of
the 83 LRM;
13.5 "Address clauses should not be used to achieve overlays of
objects...Any program using address clauses to achieve
such effects is erroneous."
A work around is to have a dual meaning name for the register and
use one procedure, appropriately named, to write to it and a function,
again with a suitable name, for reading it.
This is a case where C programmers use the union structure. I
confess that I have not ferreted out in the Ada 95 RM or Rational
the right (and very concise) way to do this now.
Recommendations?
Robert S. White
76166.1137@compuserve.com -- speaking for myself only
next prev parent reply other threads:[~1995-03-23 18:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
1995-03-23 6:34 Importing C Structures Chris O'Regan
1995-03-23 7:55 ` Vladimir Vukicevic
1995-03-23 18:55 ` Robert S. White [this message]
1995-03-24 8:51 ` Vladimir Vukicevic
1995-03-25 9:57 ` Keith Thompson
1995-03-26 13:16 ` Larry Kilgallen, LJK Software
1995-03-27 0:00 ` Kevin F. Quinn
1995-04-07 0:00 ` Larry Kilgallen
1995-03-27 15:35 ` Theodore Dennison
1995-03-28 0:00 ` Robert Dewar
1995-03-28 11:44 ` Keith Thompson
1995-03-29 0:00 ` misattrubation (was: Re: Importing C Structures) Theodore Dennison
1995-03-31 0:00 ` Theodore Dennison
1995-03-27 23:39 ` Importing C Structures Keith Thompson
1995-03-27 16:00 ` Norman H. Cohen
1995-03-24 16:08 ` Robert I. Eachus
1995-03-24 20:20 ` Bob Gilbert
1995-03-25 18:07 ` Robert Dewar
1995-03-24 17:30 ` Robert Dewar
1995-03-24 15:32 ` Robert Dewar
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