From patchwork Thu Nov 20 05:16:13 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yerden Zhumabekov X-Patchwork-Id: 1356 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 1ABC97F40; Thu, 20 Nov 2014 06:06:18 +0100 (CET) Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id 62F817EB3 for ; Thu, 20 Nov 2014 06:06:13 +0100 (CET) Received: from mgw.gov.kz (mx.ctsat.kz [178.89.4.95]) by mgw.gov.kz with ESMTP id sAK5GWWZ000371-sAK5GWWb000371 (version=TLSv1.0 cipher=AES128-SHA bits=128 verify=NO); Thu, 20 Nov 2014 11:16:34 +0600 Received: from EXCASHUB2.rgp.local (192.168.40.53) by EdgeForefront.rgp.local (192.168.40.59) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 20 Nov 2014 11:16:20 +0600 Received: from r220.rgp.local (192.168.59.10) by excashub2.rgp.local (192.168.40.48) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 20 Nov 2014 11:16:31 +0600 From: Yerden Zhumabekov To: Date: Thu, 20 Nov 2014 11:16:13 +0600 Message-ID: <44ef6fb19223e71d514f18b406342ddeda09529d.1416459284.git.e_zhumabekov@sts.kz> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> MIME-Version: 1.0 X-Originating-IP: [192.168.59.10] X-FEAS-SYSTEM-WL: e_zhumabekov@sts.kz Subject: [dpdk-dev] [PATCH v5 2/7] hash: add assembly implementation of CRC32 intrinsics X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Added: - crc32c_sse42_u32() emits 'crc32l' asm instruction; - crc32c_sse42_u64() emits 'crc32q' asm instruction; - crc32c_sse42_u64_mimic(), wrapper in case of run on 32-bit platform. Signed-off-by: Yerden Zhumabekov --- lib/librte_hash/rte_hash_crc.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/lib/librte_hash/rte_hash_crc.h b/lib/librte_hash/rte_hash_crc.h index 4d7532a..9bd0cf6 100644 --- a/lib/librte_hash/rte_hash_crc.h +++ b/lib/librte_hash/rte_hash_crc.h @@ -363,6 +363,40 @@ crc32c_2words(uint64_t data, uint32_t init_val) return crc; } +static inline uint32_t +crc32c_sse42_u32(uint32_t data, uint32_t init_val) +{ + __asm__ volatile( + "crc32l %[data], %[init_val];" + : [init_val] "+r" (init_val) + : [data] "rm" (data)); + return init_val; +} + +static inline uint32_t +crc32c_sse42_u64(uint64_t data, uint64_t init_val) +{ + __asm__ volatile( + "crc32q %[data], %[init_val];" + : [init_val] "+r" (init_val) + : [data] "rm" (data)); + return init_val; +} + +static inline uint32_t +crc32c_sse42_u64_mimic(uint64_t data, uint64_t init_val) +{ + union { + uint32_t u32[2]; + uint64_t u64; + } d; + + d.u64 = data; + init_val = crc32c_sse42_u32(d.u32[0], init_val); + init_val = crc32c_sse42_u32(d.u32[1], init_val); + return init_val; +} + /** * Use single crc32 instruction to perform a hash on a 4 byte value. *