From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031584AbWK3Wc6 (ORCPT ); Thu, 30 Nov 2006 17:32:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031585AbWK3Wc6 (ORCPT ); Thu, 30 Nov 2006 17:32:58 -0500 Received: from smtp.osdl.org ([65.172.181.25]:59789 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1031584AbWK3Wc5 (ORCPT ); Thu, 30 Nov 2006 17:32:57 -0500 Date: Thu, 30 Nov 2006 14:32:46 -0800 From: Andrew Morton To: Andi Kleen Cc: bugme-daemon@bugzilla.kernel.org, linux-kernel@vger.kernel.org, mjw99@ic.ac.uk Subject: Re: [Bugme-new] [Bug 7602] New: Failure on compilation: include/asm/bitops.h:122: error: inconsistent operand constraints in an `asm' in nfs_access_add_cache() Message-Id: <20061130143246.4a4bb970.akpm@osdl.org> In-Reply-To: <200611302322.00167.ak@suse.de> References: <200611302118.kAULIrxS011661@fire-2.osdl.org> <20061130133748.11261443.akpm@osdl.org> <200611302322.00167.ak@suse.de> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.6; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 30 Nov 2006 23:22:00 +0100 Andi Kleen wrote: > > > > static __inline__ int __test_and_set_bit(int nr, volatile void * addr) > > { > > int oldbit; > > > > __asm__( > > "btsl %2,%1\n\tsbbl %0,%0" > > :"=r" (oldbit),"+m" (ADDR) > > :"dIr" (nr)); > > return oldbit; > > } > > > > explodes with gcc-3.4.4. > > Known issue. The new form is correct and needed, but the old gcc doesn't accept > it. I haven't gotten a form that is both and correct and works on the old compiler > out of the gcc hackers I asked. Oh, thanks. What does "d" do, btw? My gcc info page only covers "x86" and says only "`d' register" (And, more importantly, where is the best description of gcc asm constraints?)