Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754748AbcC0GGx (ORCPT ); Sun, 27 Mar 2016 02:06:53 -0400 Received: from mail-pf0-f194.google.com ([209.85.192.194]:33018 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754331AbcC0GGq (ORCPT ); Sun, 27 Mar 2016 02:06:46 -0400 Subject: [PATCH 07/31] Add mips-specific parity functions To: Ralf Baechle , Leonid Yegoshin , "Maciej W. Rozycki" References: <1458788612-4367-1-git-send-email-zhaoxiu.zeng@gmail.com> Cc: linux-kernel@vger.kernel.org, linux-mips@linux-mips.org From: "zhaoxiu.zeng" Message-ID: <56F7785F.1090101@gmail.com> Date: Sun, 27 Mar 2016 14:06:23 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.1 MIME-Version: 1.0 In-Reply-To: <1458788612-4367-1-git-send-email-zhaoxiu.zeng@gmail.com> Content-Type: text/plain; charset=gbk Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1993 Lines: 75 From: Zeng Zhaoxiu Signed-off-by: Zeng Zhaoxiu --- arch/mips/include/asm/arch_parity.h | 44 +++++++++++++++++++++++++++++++++++++ arch/mips/include/asm/bitops.h | 3 +++ 2 files changed, 47 insertions(+) create mode 100644 arch/mips/include/asm/arch_parity.h diff --git a/arch/mips/include/asm/arch_parity.h b/arch/mips/include/asm/arch_parity.h new file mode 100644 index 0000000..23b3c23 --- /dev/null +++ b/arch/mips/include/asm/arch_parity.h @@ -0,0 +1,44 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + */ +#ifndef _ASM_ARCH_PARITY_H +#define _ASM_ARCH_PARITY_H + +#ifdef ARCH_HAS_USABLE_BUILTIN_POPCOUNT + +#include + +static inline unsigned int __arch_parity32(unsigned int w) +{ + return __builtin_popcount(w) & 1; +} + +static inline unsigned int __arch_parity16(unsigned int w) +{ + return __arch_parity32(w & 0xffff); +} + +static inline unsigned int __arch_parity8(unsigned int w) +{ + return __arch_parity32(w & 0xff); +} + +static inline unsigned int __arch_parity4(unsigned int w) +{ + return __arch_parity32(w & 0xf); +} + +static inline unsigned int __arch_parity64(__u64 w) +{ + return (unsigned int)__builtin_popcountll(w) & 1; +} + +#else +#include +#include +#endif + +#endif /* _ASM_ARCH_PARITY_H */ diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h index ce9666c..0b87734 100644 --- a/arch/mips/include/asm/bitops.h +++ b/arch/mips/include/asm/bitops.h @@ -626,6 +626,9 @@ static inline int ffs(int word) #include #include +#include +#include + #include #include -- 2.5.5