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Message-ID: <017601c15465$94e266a0$0200a8c0@lifelesswks>
From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To: <cygwin-apps AT cygwin DOT com>
References: <20011014025328 DOT 24230 DOT qmail AT web14505 DOT mail DOT yahoo DOT com> <20011013232846 DOT A2364 AT redhat DOT com>
Subject: Re: GCC-3 additions
Date: Sun, 14 Oct 2001 14:06:20 +1000
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----- Original Message -----
From: "Christopher Faylor" <cgf AT redhat DOT com>
To: <cygwin-apps AT cygwin DOT com>
Sent: Sunday, October 14, 2001 1:28 PM
Subject: Re: GCC-3 additions


> >2) How important is fastcall calling convention to cygwin apps.  I
have
> >been working with Eric Kohl on a patchset that he is keen to get into
mingw
> >binaries. ReactOS project needs them for building MS-compat device
drivers.
> > They involve changes in binutils (as, dlltool, ld) as well as gcc.
These
> >are still WIP
>
> I'd like to have fastcall conventions.  I think it is necessary if we
want
> gcc to be a replacement for MSVC.

Also a requirement to build many low level things with gcc - and if/when
we get more 'mounting' capability, a logical extension to that is the
ability to provide _real_ win32 mounting - and that will require
fastcall AFAIK.

> Out of curiousity, how does fastcall differ from attribute ((regparm
(n)))?

AFAIK it's simply the symbol convention in the object file that is the
issue.

Rob