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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2020-12-30 17:46:07 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2020-12-30 17:46:07 +0200 |
| commit | 1f75681cbba895ea2f7ea0637900721f4522e729 (patch) | |
| tree | 19eb7a48b5513f9f5811b1e515a3d4c8e637641c /cipher/Makefile.am | |
| parent | 6a0bb9ab7f886087d7edb0725c90485086a1c0b4 (diff) | |
| download | libgcrypt-cipher-s390x-optimizations.tar.gz | |
Add s390x/zSeries implementation of Poly1305cipher-s390x-optimizations
* cipher/Makefile.am: Add 'poly1305-s390x.S' and
'asm-poly1305-s390x.h'.
* cipher/asm-poly1305-s390x.h: New
* cipher/chacha20-s390x.S (_gcry_chacha20_poly1305_s390x_vx_blocks8)
(_gcry_chacha20_poly1305_s390x_vx_blocks4_2_1): New, stitched
chacha20-poly1305 implementation.
* cipher/chacha20.c (USE_S390X_VX_POLY1305): New.
(_gcry_chacha20_poly1305_s390x_vx_blocks8)
(_gcry_chacha20_poly1305_s390x_vx_blocks4_2_1): New prototypes.
(_gcry_chacha20_poly1305_encrypt, _gcry_chacha20_poly1305_decrypt): Add
s390x/VX stitched chacha20-poly1305 code-path.
* cipher/poly1305-s390x.S: New.
* cipher/poly1305.c (USE_S390X_ASM, HAVE_ASM_POLY1305_BLOCKS): New.
[USE_S390X_ASM] (_gcry_poly1305_s390x_blocks1, poly1305_blocks): New.
* configure.ac (gcry_cv_gcc_inline_asm_s390x): Check for 'risbgn' and
'algrk' instructions.
* tests/basic.c (_check_poly1305_cipher): Add large chacha20-poly1305
test vector.
--
Patch adds Poly1305 and stitched ChaCha20-Poly1305 implementation
for zSeries. Stitched implementation interleaves ChaCha20 and Poly1305
processing for higher instruction level parallelism and better
utilization of execution units.
Benchmark on z15 (4504 Mhz):
Before:
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
POLY1305 enc | 1.16 ns/B 823.2 MiB/s 5.22 c/B
POLY1305 dec | 1.16 ns/B 823.2 MiB/s 5.22 c/B
POLY1305 auth | 0.736 ns/B 1295 MiB/s 3.32 c/B
After (chacha20-poly1305 ~71% faster, poly1305 ~29% faster):
CHACHA20 | nanosecs/byte mebibytes/sec cycles/byte
POLY1305 enc | 0.677 ns/B 1409 MiB/s 3.05 c/B
POLY1305 dec | 0.655 ns/B 1456 MiB/s 2.95 c/B
POLY1305 auth | 0.569 ns/B 1675 MiB/s 2.56 c/B
GnuPG-bug-id: 5202
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'cipher/Makefile.am')
| -rw-r--r-- | cipher/Makefile.am | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/cipher/Makefile.am b/cipher/Makefile.am index 3234bcb2..6727b8b1 100644 --- a/cipher/Makefile.am +++ b/cipher/Makefile.am @@ -60,6 +60,7 @@ libcipher_la_SOURCES = \ mac.c mac-internal.h \ mac-hmac.c mac-cmac.c mac-gmac.c mac-poly1305.c \ poly1305.c poly1305-internal.h \ + poly1305-s390x.S \ kdf.c kdf-internal.h \ bithelp.h \ bufhelp.h \ @@ -75,6 +76,7 @@ EXTRA_libcipher_la_SOURCES = \ asm-inline-s390x.h \ asm-poly1305-aarch64.h \ asm-poly1305-amd64.h \ + asm-poly1305-s390x.h \ arcfour.c arcfour-amd64.S \ blowfish.c blowfish-amd64.S blowfish-arm.S \ cast5.c cast5-amd64.S cast5-arm.S \ |