Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Subject: Re: Questions on patching dcrt0.cc
From: Max Kaehn <slothman AT electric-cloud DOT com>
To: cygwin AT cygwin DOT com
In-Reply-To: <Pine.GSO.4.61.0505252005040.8541@slinky.cs.nyu.edu>
References: <1117064831 DOT 5390 DOT 174 DOT camel AT fulgurite> 	 <Pine DOT GSO DOT 4 DOT 61 DOT 0505252005040 DOT 8541 AT slinky DOT cs DOT nyu DOT edu>
Content-Type: text/plain
Message-Id: <1117139233.5390.287.camel@fulgurite>
Mime-Version: 1.0
Date: Thu, 26 May 2005 13:27:13 -0700
Content-Transfer-Encoding: 7bit
X-Spam-Not-Checked:  Messages over 100K or from internal Electric Cloud machines are not checked
X-IsSubscribed: yes

On Wed, 2005-05-25 at 21:38, Igor Pechtchanski wrote:
> As I understand it, the same issues arise whether cygwin1.dll is
> dynamically loaded from an MSVC application or a MinGW application.
> There is a simple way to compile MinGW applications on Cygwin (namely,
> "gcc -mno-cygwin").  You could test your approach with a MinGW-compiled
> app, and if you see the same behavior as with MSVC, the MinGW app could be
> included in the testsuite.

Thanks for the pointer, Igor.  That was extremely helpful.

I just ported the test app to mingw.  The only thing I had to change was
to put an #ifdef in to use GCC-style inline assembly instead of
MSVC-style when it looks at the segment register.  I'm still
reeling in amazement at how easy that was.  Wow.

My hat's off to the mingw folks, and I'll be submitting the test
utility (as a new subdirectory for winsup/testsuite) as mingw 
code (under the cygwin license) with an option in the makefile to 
show that it works for MSVC.



--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/