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* cipher/sha1-armv7-neon.S: Tweak implementation for speed-up.
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Benchmark on Cortex-A8 1008Mhz:
New:
| nanosecs/byte mebibytes/sec cycles/byte
SHA1 | 7.04 ns/B 135.4 MiB/s 7.10 c/B
Old:
| nanosecs/byte mebibytes/sec cycles/byte
SHA1 | 7.79 ns/B 122.4 MiB/s 7.85 c/B
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
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* cipher/camellia-arm.S (GET_DATA_POINTER): New.
(_gcry_camellia_arm_encrypt_block): Use GET_DATA_POINTER.
(_gcry_camellia_arm_decrypt_block): Ditto.
* cipher/cast5-arm.S (GET_DATA_POINTER): New.
(_gcry_cast5_arm_encrypt_block, _gcry_cast5_arm_decrypt_block)
(_gcry_cast5_arm_enc_blk2, _gcry_cast5_arm_dec_blk2): Use
GET_DATA_POINTER.
* cipher/rijndael-arm.S (GET_DATA_POINTER): New.
(_gcry_aes_arm_encrypt_block, _gcry_aes_arm_decrypt_block): Use
GET_DATA_POINTER.
* cipher/sha1-armv7-neon.S (GET_DATA_POINTER): New.
(.LK_VEC): Move from .text to .data section.
(_gcry_sha1_transform_armv7_neon): Use GET_DATA_POINTER.
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Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
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* cipher/Makefile.am: Add 'sha1-armv7-neon.S'.
* cipher/sha1-armv7-neon.S: New.
* cipher/sha1.c (USE_NEON): New.
(SHA1_CONTEXT, sha1_init) [USE_NEON]: Add and initialize 'use_neon'.
[USE_NEON] (_gcry_sha1_transform_armv7_neon): New.
(transform) [USE_NEON]: Use ARM/NEON assembly if enabled.
* configure.ac: Add 'sha1-armv7-neon.lo'.
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Patch adds ARM/NEON implementation for SHA-1.
Benchmarks show 1.72x improvement on ARM Cortex-A8, 1008 Mhz:
jussi@cubie:~/libgcrypt$ tests/bench-slope --cpu-mhz 1008 hash sha1
Hash:
| nanosecs/byte mebibytes/sec cycles/byte
SHA1 | 7.80 ns/B 122.3 MiB/s 7.86 c/B
=
jussi@cubie:~/libgcrypt$ tests/bench-slope --disable-hwf arm-neon --cpu-mhz 1008 hash sha1
Hash:
| nanosecs/byte mebibytes/sec cycles/byte
SHA1 | 13.41 ns/B 71.10 MiB/s 13.52 c/B
=
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
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