From patchwork Thu Oct 13 07:00:04 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konrad Eisele X-Patchwork-Id: 119361 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 2A5EFB6F7D for ; Thu, 13 Oct 2011 18:06:45 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751445Ab1JMHGo (ORCPT ); Thu, 13 Oct 2011 03:06:44 -0400 Received: from mail176c2.megamailservers.com ([69.49.111.76]:33291 "EHLO mail176c2.megamailservers.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750860Ab1JMHGo (ORCPT ); Thu, 13 Oct 2011 03:06:44 -0400 X-Authenticated-User: konrad.gaisler.com Received: from localhost.localdomain (gaisler.se [92.33.28.242]) (authenticated bits=0) by mail176c2.megamailservers.com (8.13.6/8.13.1) with ESMTP id p9D76Xb2003036; Thu, 13 Oct 2011 03:06:40 -0400 From: Konrad Eisele To: davem@davemloft.net Cc: sparclinux@vger.kernel.org, daniel@gaisler.com Subject: [PATCH 3/4] sparc32: return destination pointer on return from memcpy Date: Thu, 13 Oct 2011 09:00:04 +0200 Message-Id: <1318489205-315-4-git-send-email-konrad@gaisler.com> X-Mailer: git-send-email 1.6.4.1 In-Reply-To: <20111011.143858.923549997692641372.davem@davemloft.net> References: <20111011.143858.923549997692641372.davem@davemloft.net> X-CSC: 0 X-CHA: v=1.1 cv=2Gf4Xu/7czTJIpW45n6TwY/zr/fxhY4s3JkmIjrDDIY= c=1 sm=1 a=NZHDMFZwuJYA:10 a=U62ajLuCel8A:10 a=jXKJviUpWSOlMmIvGrHOfw==:17 a=ebG-ZW-8AAAA:8 a=n8Y_iM7U4hPESFCfAY8A:9 a=GIoRDRpJhqNxI2OKPzUA:7 a=cCYF7-FHeg4A:10 a=jXKJviUpWSOlMmIvGrHOfw==:117 Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org Gcc can optimize constant strcpy to a memcpy call. However the return value of strcpy is used in KGDB. Return the standard return value instead of 0 Signed-off-by: Konrad Eisele --- arch/sparc/lib/memcpy.S | 8 ++------ 1 files changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/sparc/lib/memcpy.S b/arch/sparc/lib/memcpy.S index 34fe657..835014b 100644 --- a/arch/sparc/lib/memcpy.S +++ b/arch/sparc/lib/memcpy.S @@ -19,12 +19,8 @@ x: #undef FASTER_NONALIGNED #define FASTER_ALIGNED -/* In kernel these functions don't return a value. - * One should use macros in asm/string.h for that purpose. - * We return 0, so that bugs are more apparent. - */ -#define SETUP_RETL -#define RETL_INSN clr %o0 +#define SETUP_RETL mov %o0, %g6 +#define RETL_INSN mov %g6, %o0 #else