From: Jonathan Larmour <jlarmour@cygnus.co.uk>
To: Sergei Organov <osv@Javad.RU>
Cc: ecos-discuss@sourceware.cygnus.com
Subject: Re: [ECOS] Re: Ecos Port to PPC509/PPC555
Date: Tue, 28 Sep 1999 07:42:00 -0000 [thread overview]
Message-ID: <37F0D3C3.B36B0E45@cygnus.co.uk> (raw)
In-Reply-To: <874sgfz3at.fsf@osv.javad.ru>
Sergei Organov wrote:
>
> Jonathan Larmour <jlarmour@cygnus.co.uk> writes:
>
> > [...]
> > Certainly one problem with doing this for (e.g.) libm is that sometimes
> > functions in there get called from all around the place, e.g.
> > *printf/*scanf. So there's a lot of scope for programmer error if they think
> > a thread doesn't ever need an FP context. Something to bear in mind
> > anyway.
>
> Isn't it better to just fix *printf/*scanf to don't use FP when it is
> not required by input format. Or am I missing something and this is
> just impossible?
I suppose you could separate out the vararg extraction into a separate
function (and make sure that function could never be inlined), but it would
be non-trivial given the "design" of Berkeley printf/scanf from which the
eCos version is derived.
Jifl
--
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next prev parent reply other threads:[~1999-09-28 7:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-09-21 12:32 [ECOS] " Ramana
1999-09-22 2:01 ` Sergei Organov
1999-09-23 8:16 ` [ECOS] " Bart Veer
1999-09-24 4:39 ` Sergei Organov
1999-09-24 8:52 ` Jonathan Larmour
1999-09-24 10:34 ` Sergei Organov
1999-09-27 11:54 ` Bart Veer
1999-09-27 17:36 ` Jonathan Larmour
1999-09-28 4:23 ` Sergei Organov
1999-09-28 7:42 ` Jonathan Larmour [this message]
1999-09-28 8:00 ` Bart Veer
1999-09-28 8:02 ` Jonathan Larmour
1999-09-28 4:19 ` Sergei Organov
1999-09-28 8:08 ` Jonathan Larmour
1999-09-28 11:03 ` Bart Veer
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