From: "J-P. Rosen" <rosen@adalog.fr>
Subject: Re: Erroneous code generation from GNAT or GCC?
Date: Wed, 01 May 2013 20:19:10 +0200
Date: 2013-05-01T20:19:10+02:00 [thread overview]
Message-ID: <klrm4k$clo$1@dont-email.me> (raw)
In-Reply-To: <lyr4hrrg7y.fsf@pushface.org>
Le 30/04/2013 21:06, Simon Wright a écrit :
> The whole thing is bizarre: code statements are written using the form
> of a qualified expression though clearly not a qualified expression
> since it can't be assigned anywhere!
Ada 83 had a requirement to allow inclusion of machine code. There was
therefore a need to have a syntactic form that would fit every possible
machine code. It made sense to represent a machine instruction as a kind
of record, with fields like op-code, registers, address... Specifying
code statements as aggregates provided the necessary flexibility without
inventing a new syntactic form.
--
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr
prev parent reply other threads:[~2013-05-01 18:19 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-27 21:08 GNAT not generating any code for sub‑program: known bug? Yannick Duchêne (Hibou57)
2013-04-27 22:22 ` Yannick Duchêne (Hibou57)
2013-04-27 23:48 ` Yannick Duchêne (Hibou57)
2013-04-28 7:14 ` Simon Wright
2013-04-28 17:52 ` Yannick Duchêne (Hibou57)
2013-04-28 19:27 ` Yannick Duchêne (Hibou57)
2013-04-28 20:46 ` Simon Wright
2013-04-28 20:43 ` Simon Wright
2013-04-28 22:35 ` Erroneous code generation from GNAT or GCC? Yannick Duchêne (Hibou57)
2013-04-28 22:49 ` Yannick Duchêne (Hibou57)
2013-04-28 23:52 ` Yannick Duchêne (Hibou57)
2013-04-29 1:35 ` Yannick Duchêne (Hibou57)
2013-04-30 0:48 ` Yannick Duchêne (Hibou57)
2013-04-30 6:40 ` Simon Wright
2013-04-30 17:04 ` Yannick Duchêne (Hibou57)
2013-04-30 19:06 ` Simon Wright
2013-04-30 21:28 ` Yannick Duchêne (Hibou57)
2013-04-30 22:22 ` Simon Wright
2013-05-01 18:19 ` J-P. Rosen [this message]
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