Add SM3 ARM/AArch64 assembly implementation

* cipher/Makefile.am: Add 'sm3-aarch64.S'.
* cipher/sm3-aarch64.S: New.
* cipher/sm3.c (USE_AARCH64_SIMD): New.
[USE_AARCH64_SIMD] (_gcry_sm3_transform_aarch64)
(do_sm3_transform_aarch64): New.
(sm3_init) [USE_AARCH64_SIMD]: New.
* configure.ac: Add 'sm3-aarch64.lo'.
* tests/basic.c (main): Add command-line option '--hash' for running
only hash algorithm tests.
--

Benchmark on AWS Graviton2:

Before:
                |  nanosecs/byte   mebibytes/sec   cycles/byte  auto Mhz
 SM3            |      4.24 ns/B     224.8 MiB/s     10.61 c/B      2500

After (~34% faster):
                |  nanosecs/byte   mebibytes/sec   cycles/byte  auto Mhz
 SM3            |      3.15 ns/B     302.4 MiB/s      7.88 c/B      2500

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/basic.c b/tests/basic.c
index e619c2e3..9e0444f6 100644
--- a/tests/basic.c
+++ b/tests/basic.c
@@ -16285,6 +16285,7 @@ main (int argc, char **argv)
   int selftest_only = 0;
   int pubkey_only = 0;
   int cipher_modes_only = 0;
+  int hash_only = 0;
   int loop = 0;
   unsigned int loopcount = 0;
 
@@ -16330,6 +16331,11 @@ main (int argc, char **argv)
           cipher_modes_only = 1;
           argc--; argv++;
         }
+      else if (!strcmp (*argv, "--hash"))
+        {
+          hash_only = 1;
+          argc--; argv++;
+        }
       else if (!strcmp (*argv, "--die"))
         {
           die_on_error = 1;
@@ -16395,6 +16401,12 @@ main (int argc, char **argv)
           check_ciphers ();
           check_cipher_modes ();
         }
+      else if (hash_only)
+        {
+          check_digests ();
+          check_hmac ();
+          check_mac ();
+        }
       else if (!selftest_only)
         {
           check_ciphers ();