From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <simark@simark.ca>
Received: from simark.ca (simark.ca [158.69.221.121])
 by sourceware.org (Postfix) with ESMTPS id 9AB703959C92
 for <gdb-patches@sourceware.org>; Tue, 10 Mar 2020 15:45:55 +0000 (GMT)
Received: from [172.16.0.95] (192-222-181-218.qc.cable.ebox.net
 [192.222.181.218])
 (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits))
 (No client certificate requested)
 by simark.ca (Postfix) with ESMTPSA id F10971E4A5;
 Tue, 10 Mar 2020 11:45:54 -0400 (EDT)
Subject: Re: [PATCH] gdb: recognize 64 bits Windows executables as Cygwin osabi
To: Eli Zaretskii <eliz@gnu.org>, Jon Turney <jon.turney@dronecode.org.uk>
Cc: gdb-patches@sourceware.org
References: <20200307041742.31158-1-simon.marchi@efficios.com>
 <83zhcsa8my.fsf@gnu.org> <4bd435cd-b06d-e0fc-70a9-9a8a18d73987@efficios.com>
 <835zfg9hz5.fsf@gnu.org>
 <85cd5fc2-8fa7-3612-b974-b3a3261bbb29@dronecode.org.uk>
 <83pndk9r5v.fsf@gnu.org>
From: Simon Marchi <simark@simark.ca>
Message-ID: <97ad4d74-4c9b-8630-f573-ca6d476dfe21@simark.ca>
Date: Tue, 10 Mar 2020 11:45:54 -0400
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.4.1
MIME-Version: 1.0
In-Reply-To: <83pndk9r5v.fsf@gnu.org>
Content-Type: text/plain; charset=utf-8
Content-Language: tl
Content-Transfer-Encoding: 7bit
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, SPF_HELO_PASS,
 SPF_PASS autolearn=ham autolearn_force=no version=3.4.2
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on
 server2.sourceware.org
X-BeenThere: gdb-patches@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gdb-patches mailing list <gdb-patches.sourceware.org>
List-Unsubscribe: <http://sourceware.org/mailman/options/gdb-patches>,
 <mailto:gdb-patches-request@sourceware.org?subject=unsubscribe>
List-Archive: <http://sourceware.org/pipermail/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-request@sourceware.org?subject=help>
List-Subscribe: <http://sourceware.org/mailman/listinfo/gdb-patches>,
 <mailto:gdb-patches-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 10 Mar 2020 15:45:58 -0000

On 2020-03-10 11:16 a.m., Eli Zaretskii wrote:
>> From: Jon Turney <jon.turney@dronecode.org.uk>
>> Date: Sun, 8 Mar 2020 14:05:10 +0000
>>
>>>> So what we can do is add an "MS-Windows" osabi and make "Cygwin" and
>>>> "MS-Windows" functionally equivalent.  Any "pei-i386" or "pei-x86-64"
>>>> executable would be detected as "MS-Windows".
>>
>> I believe this suggestion for x86_64 is wrong, in the other direction:
>> x86_64 Cygwin is LP64, but Windows is LLP64 (Se also table in [1])
> 
> If the LP64 thing is part of what defines the OS ABI, then yes, Cygwin
> should have a separate value.

If I understand correctly, that's one practical reason for introducing the separate
"Windows" OS ABI?

Simon