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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-08-31 12:48:31 +0300 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-08-31 13:31:34 +0300 |
| commit | 99d15543b8d94a8f1ef66c6ccb862b0ce82c514d (patch) | |
| tree | 1aa148d6c41647926f23607d7851a8d1e3f33aff /configure.ac | |
| parent | 03da7f8ba3ec24d4639a2bcebbc0d9d831734c08 (diff) | |
| download | libgcrypt-99d15543b8d94a8f1ef66c6ccb862b0ce82c514d.tar.gz | |
sha512: add ARM/NEON assembly version of transform function
* cipher/Makefile.am: Add 'sha512-armv7-neon.S'.
* cipher/sha512-armv7-neon.S: New file.
* cipher/sha512.c (USE_ARM_NEON_ASM): New macro.
(SHA512_CONTEXT) [USE_ARM_NEON_ASM]: Add 'use_neon'.
(sha512_init, sha384_init) [USE_ARM_NEON_ASM]: Enable 'use_neon' if
CPU support NEON instructions.
(k): Round constant array moved outside of 'transform' function.
(__transform): Renamed from 'tranform' function.
[USE_ARM_NEON_ASM] (_gcry_sha512_transform_armv7_neon): New prototype.
(transform): New wrapper function for different transform versions.
(sha512_write, sha512_final): Burn stack by the amount returned by
transform function.
* configure.ac (sha512) [neonsupport]: Add 'sha512-armv7-neon.lo'.
--
Add NEON assembly for transform function for faster SHA512 on ARM. Major speed
up thanks to 64-bit integer registers and large register file that can hold
full input buffer.
Benchmark results on Cortex-A8, 1Ghz:
Old:
$ tests/benchmark --hash-repetitions 100 md sha512 sha384
SHA512 17050ms 18780ms 29120ms 18040ms 17190ms
SHA384 17130ms 18720ms 29160ms 18090ms 17280ms
New:
$ tests/benchmark --hash-repetitions 100 md sha512 sha384
SHA512 3600ms 5070ms 15330ms 4510ms 3480ms
SHA384 3590ms 5060ms 15350ms 4510ms 3520ms
New vs old:
SHA512 4.74x 3.70x 1.90x 4.00x 4.94x
SHA384 4.77x 3.70x 1.90x 4.01x 4.91x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 89b9366d..959327ad 100644 --- a/configure.ac +++ b/configure.ac @@ -1526,6 +1526,11 @@ LIST_MEMBER(sha512, $enabled_digests) if test "$found" = "1" ; then GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512.lo" AC_DEFINE(USE_SHA512, 1, [Defined if this module should be included]) + + if test x"$neonsupport" = xyes ; then + # Build with the NEON implementation + GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-armv7-neon.lo" + fi fi LIST_MEMBER(tiger, $enabled_digests) |