From: ka@socrates.hr.att.com (Kenneth Almquist)
Subject: Re: GNAT 2.04 Linux binaries?
Date: 1995/04/21
Date: 1995-04-21T00:00:00+00:00 [thread overview]
Message-ID: <D7E6qM.n42@nntpa.cb.att.com> (raw)
In-Reply-To: VLADIMIR.95Apr19211236@speedy.intrepid.com
vladimir@speedy.intrepid.com (Vladimir Vukicevic) asks:
> Or did someone just go off on a whim and say "Hey! Let's make
> setjmp a macro, and break interfacing to every other language! Yeah!"?
There was a machine on which implementing setjmp as a function was
difficult if not impossible. (I don't remember the machine or the
details; it was something to do with not being able to access the
frame pointer for anything besides the current procedure.)
Calling setjmp from a language other than C is not a particularly
good idea anyway; for example if the interface is implemented using
stub routines setjmp won't work at all. The difficulty GNAT faces
is that the method of performing a setjmp is machine-specific but
is not specified in the machine descriptions used by GCC.
Kenneth Almquist
next prev parent reply other threads:[~1995-04-21 0:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <RBREWER.95Apr13234004@rwb114.rh.psu.edu>
[not found] ` <3mm4vn$f52@mica.inel.gov>
1995-04-20 0:00 ` GNAT 2.04 Linux binaries? Vladimir Vukicevic
1995-04-21 0:00 ` Kenneth Almquist [this message]
1995-04-21 0:00 ` Paul H. Whittington
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