From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C3E4C433ED for ; Wed, 21 Apr 2021 14:19:54 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 00D696144D for ; Wed, 21 Apr 2021 14:19:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 00D696144D Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.114625.218466 (Exim 4.92) (envelope-from ) id 1lZDhh-0000w9-2S; Wed, 21 Apr 2021 14:19:45 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 114625.218466; Wed, 21 Apr 2021 14:19:45 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZDhg-0000w2-Ve; Wed, 21 Apr 2021 14:19:44 +0000 Received: by outflank-mailman (input) for mailman id 114625; Wed, 21 Apr 2021 14:19:44 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZDhg-0000vn-D9 for xen-devel@lists.xenproject.org; Wed, 21 Apr 2021 14:19:44 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 2243289f-97a6-469f-b304-63de479f3aa3; Wed, 21 Apr 2021 14:19:43 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C41A4B4A7; Wed, 21 Apr 2021 14:19:42 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 2243289f-97a6-469f-b304-63de479f3aa3 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1619014782; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nduKn0BMFGqCtcRpgHoipLRjh1wYJIQ6hbGO3WbSEd0=; b=t4Tz3tvwkS9qeGbkvd3KI3Ps3AD8rgXfGOM+eJVgCvimaTNM43sf9FGmUaC7b0haim8u2b nWVhVVmVHzE0lK1+Kdi3WghSiAvY7XyMLhWJ9HZYFJzPh0nKYNp4rQyF8gwsnbevQdzYW0 xtxlj6CkQPLaQwIx1MHkji/cxHVhD4Q= Subject: [PATCH v2 04/20] lib: move memcmp() From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , George Dunlap , Ian Jackson , Julien Grall , Stefano Stabellini , Wei Liu References: <3ae091ce-6f6c-3ec6-abd3-4490239a707f@suse.com> Message-ID: Date: Wed, 21 Apr 2021 16:19:42 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <3ae091ce-6f6c-3ec6-abd3-4490239a707f@suse.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Allow the function to be individually linkable, discardable, and overridable. Signed-off-by: Jan Beulich --- a/xen/common/string.c +++ b/xen/common/string.c @@ -311,25 +311,6 @@ char *(strstr)(const char *s1, const cha } #endif -#ifndef __HAVE_ARCH_MEMCMP -/** - * memcmp - Compare two areas of memory - * @cs: One area of memory - * @ct: Another area of memory - * @count: The size of the area. - */ -int (memcmp)(const void *cs, const void *ct, size_t count) -{ - const unsigned char *su1, *su2; - int res = 0; - - for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--) - if ((res = *su1 - *su2) != 0) - break; - return res; -} -#endif - #ifndef __HAVE_ARCH_MEMCHR /** * memchr - Find a character in an area of memory. --- a/xen/lib/Makefile +++ b/xen/lib/Makefile @@ -4,6 +4,7 @@ lib-y += bsearch.o lib-y += ctors.o lib-y += ctype.o lib-y += list-sort.o +lib-y += memcmp.o lib-y += memcpy.o lib-y += memmove.o lib-y += memset.o --- /dev/null +++ b/xen/lib/memcmp.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +#include + +/** + * memcmp - Compare two areas of memory + * @cs: One area of memory + * @ct: Another area of memory + * @count: The size of the area. + */ +int (memcmp)(const void *cs, const void *ct, size_t count) +{ + const unsigned char *su1, *su2; + int res = 0; + + for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--) + if ((res = *su1 - *su2) != 0) + break; + return res; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: t + * End: + */