From patchwork Fri Jul 27 13:37:16 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anthony Liguori X-Patchwork-Id: 173670 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id F08A72C007C for ; Fri, 27 Jul 2012 23:38:00 +1000 (EST) Received: from localhost ([::1]:53987 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sukju-0001uu-Go for incoming@patchwork.ozlabs.org; Fri, 27 Jul 2012 09:37:58 -0400 Received: from eggs.gnu.org ([208.118.235.92]:57355) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sukjj-0001um-CX for qemu-devel@nongnu.org; Fri, 27 Jul 2012 09:37:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sukjd-0008Ks-MJ for qemu-devel@nongnu.org; Fri, 27 Jul 2012 09:37:47 -0400 Received: from e8.ny.us.ibm.com ([32.97.182.138]:49406) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sukjd-0008Kl-IJ for qemu-devel@nongnu.org; Fri, 27 Jul 2012 09:37:41 -0400 Received: from /spool/local by e8.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 27 Jul 2012 09:37:34 -0400 Received: from d01dlp02.pok.ibm.com (9.56.224.85) by e8.ny.us.ibm.com (192.168.1.108) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 27 Jul 2012 09:37:30 -0400 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id C1C426E8036 for ; Fri, 27 Jul 2012 09:37:29 -0400 (EDT) Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q6RDbTwo357614 for ; Fri, 27 Jul 2012 09:37:29 -0400 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q6RDbT7U009381 for ; Fri, 27 Jul 2012 10:37:29 -0300 Received: from titi.austin.rr.com ([9.76.49.219]) by d01av02.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id q6RDbN5L008888; Fri, 27 Jul 2012 10:37:28 -0300 From: Anthony Liguori To: qemu-devel@nongnu.org Date: Fri, 27 Jul 2012 08:37:16 -0500 Message-Id: <1343396239-19272-5-git-send-email-aliguori@us.ibm.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1343396239-19272-1-git-send-email-aliguori@us.ibm.com> References: <1343396239-19272-1-git-send-email-aliguori@us.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12072713-9360-0000-0000-000008D3615D X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 32.97.182.138 Cc: Peter Maydell , Anthony Liguori , libvir-list@redhat.com, Alexander Graf , Markus Armbruster , Eric Blake Subject: [Qemu-devel] [PATCH 4/7] compiler: add macro for GCC weak symbols X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This lets us provide a default implementation of a symbol which targets can override. Signed-off-by: Anthony Liguori --- compiler.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/compiler.h b/compiler.h index 736e770..f76921e 100644 --- a/compiler.h +++ b/compiler.h @@ -45,6 +45,7 @@ # define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2))) # define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m))) # endif +#define GCC_WEAK __attribute__((weak)) #else #define GCC_ATTR /**/ #define GCC_FMT_ATTR(n, m)