From e1a3931263e67aacec3c0bfcaa86c7d1441d5c6a Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Wed, 11 Dec 2013 19:32:08 +0200 Subject: SHA-256: Add SSSE3 implementation for x86-64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * cipher/Makefile.am: Add 'sha256-ssse3-amd64.S'. * cipher/sha256-ssse3-amd64.S: New. * cipher/sha256.c (USE_SSSE3): New. (SHA256_CONTEXT) [USE_SSSE3]: Add 'use_ssse3'. (sha256_init, sha224_init) [USE_SSSE3]: Initialize 'use_ssse3'. (transform): Rename to... (_transform): This. [USE_SSSE3] (_gcry_sha256_transform_amd64_ssse3): New. (transform): New. * configure.ac (HAVE_INTEL_SYNTAX_PLATFORM_AS): New check. (sha256): Add 'sha256-ssse3-amd64.lo'. * doc/gcrypt.texi: Document 'intel-ssse3'. * src/g10lib.h (HWF_INTEL_SSSE3): New. * src/hwfeatures.c (hwflist): Add "intel-ssse3". * src/hwf-x86.c (detect_x86_gnuc): Test for SSSE3. -- Patch adds fast SSSE3 implementation of SHA-256 by Intel Corporation. The assembly source is licensed under 3-clause BSD license, thus compatible with LGPL2.1+. Original source can be accessed at: http://www.intel.com/p/en_US/embedded/hwsw/technology/packet-processing#docs Implementation is described in white paper "Fast SHA - 256 Implementations on Intel® Architecture Processors" http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/sha-256-implementations-paper.html Benchmarks: cpu Old New Diff Intel i5-4570 13.99 c/B 10.66 c/B 1.31x Intel i5-2450M 21.53 c/B 15.79 c/B 1.36x Intel Core2 T8100 20.84 c/B 15.07 c/B 1.38x Signed-off-by: Jussi Kivilinna --- src/hwf-x86.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/hwf-x86.c') diff --git a/src/hwf-x86.c b/src/hwf-x86.c index 784fe2a4..ab6dacdc 100644 --- a/src/hwf-x86.c +++ b/src/hwf-x86.c @@ -206,6 +206,9 @@ detect_x86_gnuc (void) if (features & 0x00000002) result |= HWF_INTEL_PCLMUL; #endif + /* Test bit 9 for SSSE3. */ + if (features & 0x00000200) + result |= HWF_INTEL_SSSE3; #ifdef ENABLE_AESNI_SUPPORT /* Test bit 25 for AES-NI. */ if (features & 0x02000000) -- cgit v1.2.1