From patchwork Thu Jan 29 08:48:59 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yerden Zhumabekov X-Patchwork-Id: 2709 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 34DBA5AB2; Thu, 29 Jan 2015 09:49:14 +0100 (CET) Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id EDC5A5AAE for ; Thu, 29 Jan 2015 09:49:12 +0100 (CET) Received: from mgw.gov.kz (mx.ctsat.kz [178.89.4.95]) by mgw.gov.kz with ESMTP id t0T8nBA0032026-t0T8nBA1032026; Thu, 29 Jan 2015 14:49:11 +0600 Received: from EXCASHUB1.rgp.local (192.168.40.51) by EdgeForefront.rgp.local (192.168.40.59) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 29 Jan 2015 14:47:59 +0600 Received: from r220.rgp.local (192.168.59.10) by excashub1.rgp.local (192.168.40.48) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 29 Jan 2015 14:49:15 +0600 From: Yerden Zhumabekov To: Date: Thu, 29 Jan 2015 14:48:59 +0600 Message-ID: <3fdc339aa3f0206ae2200937b9791af69e83409e.1417092208.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 v6 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 4da7ca4..fe35996 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. *