From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-patches-return-95487-listarch-gdb-patches=sources.redhat.com@sourceware.org>
Received: (qmail 28361 invoked by alias); 25 Oct 2012 13:18:07 -0000
Received: (qmail 28347 invoked by uid 22791); 25 Oct 2012 13:18:04 -0000
X-SWARE-Spam-Status: No, hits=-3.3 required=5.0	tests=AWL,BAYES_00,KHOP_THREADED,RP_MATCHES_RCVD,TW_KD
X-Spam-Check-By: sourceware.org
Received: from sibelius.xs4all.nl (HELO glazunov.sibelius.xs4all.nl) (83.163.83.176)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 25 Oct 2012 13:17:58 +0000
Received: from glazunov.sibelius.xs4all.nl (kettenis@localhost [127.0.0.1])	by glazunov.sibelius.xs4all.nl (8.14.5/8.14.3) with ESMTP id q9PDHsBA017962;	Thu, 25 Oct 2012 15:17:54 +0200 (CEST)
Received: (from kettenis@localhost)	by glazunov.sibelius.xs4all.nl (8.14.5/8.14.3/Submit) id q9PDHrnJ026193;	Thu, 25 Oct 2012 15:17:53 +0200 (CEST)
Date: Thu, 25 Oct 2012 13:18:00 -0000
Message-Id: <201210251317.q9PDHrnJ026193@glazunov.sibelius.xs4all.nl>
From: Mark Kettenis <mark.kettenis@xs4all.nl>
To: brobecker@adacore.com
CC: gdb-patches@sourceware.org
In-reply-to: <1351099417-18960-1-git-send-email-brobecker@adacore.com>
Subject: Re: amd64-windows: Fix funcall with by-pointer arguments
References:  <1351099417-18960-1-git-send-email-brobecker@adacore.com>
Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-patches.sourceware.org>
List-Subscribe: <mailto:gdb-patches-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-patches-owner@sourceware.org
X-SW-Source: 2012-10/txt/msg00495.txt.bz2

> From: "Joel Brobecker" <brobecker@adacore.com>
> Date: Wed, 24 Oct 2012 13:23:35 -0400
> 
> Hello,
> 
> I realized a while ago that I completely misunderstood the amd64-windows
> API regarding arguments that are passed by pointer. The calling
> convention is published there:
> 
>     http://msdn.microsoft.com/en-us/library/zthk2dkh(v=vs.80).aspx

Reading that document, I think you're much much better off just
implementing your own versons of _return_value(), _push_dummy_call()
for Windows.  The complication of "classifying" the parameters makes
very little sense on Windows, and the hookds you're adding (and that
have been added in the past) only complicate the generic ABI code.