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Thu, 01 Apr 2021 10:23:09 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 5993ffe6-787f-475b-b7ec-368f2c9a3671; Thu, 01 Apr 2021 10:23:07 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1529BAED7; Thu, 1 Apr 2021 10:23:07 +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: 5993ffe6-787f-475b-b7ec-368f2c9a3671 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=1617272587; 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=5742tdH/lAsOCplYSlX/aqstUJg8Rlv97TdWNCdRmSk=; b=ANROaimZWyzPlbs+4BeRDilkJtvIDsazHfGxSUcZuaQRhSHX2z0Sjb4Bb/sOszH8YVl/lX PH6jFzbeGidL4IhDn7Gyi6zXcWSZFqKKxFmhYaCw6iNB74mjlsJniiTasoOgEV94SxvN6a 0W8/f1ceznKvCPDD+VZsPlyDN7H/Zbw= Subject: [PATCH 09/23] lib: move memchr_inv() From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , George Dunlap , Ian Jackson , Julien Grall , Stefano Stabellini , Wei Liu References: Message-ID: Date: Thu, 1 Apr 2021 12:23:06 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Signed-off-by: Jan Beulich --- a/xen/common/string.c +++ b/xen/common/string.c @@ -311,26 +311,6 @@ char *(strstr)(const char *s1, const cha } #endif -/** - * memchr_inv - Find an unmatching character in an area of memory. - * @s: The memory area - * @c: The byte that is expected - * @n: The size of the area. - * - * returns the address of the first occurrence of a character other than @c, - * or %NULL if the whole buffer contains just @c. - */ -void *memchr_inv(const void *s, int c, size_t n) -{ - const unsigned char *p = s; - - while (n--) - if ((unsigned char)c != *p++) - return (void *)(p - 1); - - return NULL; -} - /* * Local variables: * mode: C --- a/xen/lib/Makefile +++ b/xen/lib/Makefile @@ -5,6 +5,7 @@ lib-y += ctors.o lib-y += ctype.o lib-y += list-sort.o lib-y += memchr.o +lib-y += memchr_inv.o lib-y += memcmp.o lib-y += memcpy.o lib-y += memmove.o --- /dev/null +++ b/xen/lib/memchr_inv.c @@ -0,0 +1,35 @@ +/* + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +#include + +/** + * memchr_inv - Find an unmatching character in an area of memory. + * @s: The memory area + * @c: The byte that is expected + * @n: The size of the area. + * + * returns the address of the first occurrence of a character other than @c, + * or %NULL if the whole buffer contains just @c. + */ +void *memchr_inv(const void *s, int c, size_t n) +{ + const unsigned char *p = s; + + while (n--) + if ((unsigned char)c != *p++) + return (void *)(p - 1); + + return NULL; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: t + * End: + */