From patchwork Mon Feb 6 17:28:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13130453 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F656C05027 for ; Mon, 6 Feb 2023 17:32:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229570AbjBFRcS (ORCPT ); Mon, 6 Feb 2023 12:32:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229686AbjBFRcS (ORCPT ); Mon, 6 Feb 2023 12:32:18 -0500 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69639270C for ; Mon, 6 Feb 2023 09:32:17 -0800 (PST) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4P9YB033cBz6J7dZ; Tue, 7 Feb 2023 01:27:52 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.17; Mon, 6 Feb 2023 17:32:15 +0000 From: Jonathan Cameron To: , Michael Tsirkin CC: Ben Widawsky , , , Ira Weiny , Gregory Price , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [PATCH v4 08/10] qemu/bswap: Add const_le64() Date: Mon, 6 Feb 2023 17:28:14 +0000 Message-ID: <20230206172816.8201-9-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230206172816.8201-1-Jonathan.Cameron@huawei.com> References: <20230206172816.8201-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100004.china.huawei.com (7.191.162.219) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org From: Ira Weiny Gcc requires constant versions of cpu_to_le* calls. Add a 64 bit version. Reviewed-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Gregory Price Tested-by: Gregory Price Signed-off-by: Ira Weiny Signed-off-by: Jonathan Cameron Reviewed-by: Fan Ni --- v2: Update comment (Philippe) --- include/qemu/bswap.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index 3cbe52246b..eb3bcf2520 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -129,11 +129,20 @@ CPU_CONVERT(le, 32, uint32_t) CPU_CONVERT(le, 64, uint64_t) /* - * Same as cpu_to_le{16,32}, except that gcc will figure the result is + * Same as cpu_to_le{16,32,64}, except that gcc will figure the result is * a compile-time constant if you pass in a constant. So this can be * used to initialize static variables. */ #if HOST_BIG_ENDIAN +# define const_le64(_x) \ + ((((_x) & 0x00000000000000ffU) << 56) | \ + (((_x) & 0x000000000000ff00U) << 40) | \ + (((_x) & 0x0000000000ff0000U) << 24) | \ + (((_x) & 0x00000000ff000000U) << 8) | \ + (((_x) & 0x000000ff00000000U) >> 8) | \ + (((_x) & 0x0000ff0000000000U) >> 24) | \ + (((_x) & 0x00ff000000000000U) >> 40) | \ + (((_x) & 0xff00000000000000U) >> 56)) # define const_le32(_x) \ ((((_x) & 0x000000ffU) << 24) | \ (((_x) & 0x0000ff00U) << 8) | \ @@ -143,6 +152,7 @@ CPU_CONVERT(le, 64, uint64_t) ((((_x) & 0x00ff) << 8) | \ (((_x) & 0xff00) >> 8)) #else +# define const_le64(_x) (_x) # define const_le32(_x) (_x) # define const_le16(_x) (_x) #endif