Bug 1566126 - freebl: POWER GHASH Vector Acceleration, r=mt

Implementation for POWER8 adapted from the ARM paper:
https://conradoplg.cryptoland.net/files/2010/12/gcm14.pdf

Benchmark of `bltest -E -m aes_gcm -i tests/aes_gcm/plaintext10 \
-v tests/aes_gcm/iv10  -k tests/aes_gcm/key10 -5 10` on POWER8 3.3GHz.

NSS_DISABLE_HW_CRYPTO=1
      mode          in symmkey  opreps  cxreps     context          op   time(sec)     thrgput
 aes_gcm_e       309Mb     192      5M       0       0.000   10000.000      10.001        30Mb

      mode          in symmkey  opreps  cxreps     context          op   time(sec)     thrgput
 aes_gcm_e       829Mb     192     14M       0       0.000   10000.000      10.001        82Mb

Notable operf results, sw:
samples  %        image name               symbol name
226033   59.3991  libfreeblpriv3.so        bmul
80606    21.1824  libfreeblpriv3.so        rijndael_encryptBlock128
28851     7.5817  libfreeblpriv3.so        gcm_HashMult_sftw

hw:
213899   56.2037  libfreeblpriv3.so        rijndael_encryptBlock128
45233    11.8853  libfreeblpriv3.so        gcm_HashMult_hw

So the ghash part is ~5.6x faster.

Signed-off-by: Lauri Kasanen <cand@gmx.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/freebl/freebl.gyp b/lib/freebl/freebl.gyp
index f12508136..7ea5c3750 100644
--- a/lib/freebl/freebl.gyp
+++ b/lib/freebl/freebl.gyp
@@ -133,6 +133,24 @@
       ]
     },
     {
+      'target_name': 'gcm-aes-ppc_c_lib',
+      'type': 'static_library',
+      'sources': [
+        'gcm-ppc.c'
+      ],
+      'dependencies': [
+        '<(DEPTH)/exports.gyp:nss_exports'
+      ],
+      'cflags': [
+        '-mcrypto',
+        '-maltivec'
+      ],
+      'cflags_mozilla': [
+        '-mcrypto',
+        '-maltivec'
+      ]
+    },
+    {
       'target_name': 'armv8_c_lib',
       'type': 'static_library',
       'sources': [
@@ -199,6 +217,11 @@
             'gcm-aes-aarch64_c_lib',
           ],
         }],
+        [ 'target_arch=="ppc64le"', {
+          'dependencies': [
+            'gcm-aes-ppc_c_lib',
+          ],
+        }],
         [ 'OS=="linux"', {
           'defines!': [
             'FREEBL_NO_DEPEND',
@@ -245,6 +268,11 @@
             'gcm-aes-aarch64_c_lib',
           ],
         }],
+        [ 'target_arch=="ppc64" or target_arch=="ppc64le"', {
+          'dependencies': [
+            'gcm-aes-ppc_c_lib',
+          ],
+        }],
         [ 'OS!="linux"', {
           'conditions': [
             [ 'moz_fold_libs==0', {