Module Name: src
Committed By: christos
Date: Sun Jan 8 01:55:49 UTC 2017
Modified Files:
src/crypto/external/bsd/openssl/dist/crypto/bn/asm: x86_64-gf2m.pl
Log Message:
PR/51569: Andreas Gustafsson: Check the right bit for pclmulqdq:
Perform a Carry-Less Multiplication of Quadword instruction
(accelerator for GCM)
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 \
src/crypto/external/bsd/openssl/dist/crypto/bn/asm/x86_64-gf2m.pl
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/crypto/external/bsd/openssl/dist/crypto/bn/asm/x86_64-gf2m.pl
diff -u src/crypto/external/bsd/openssl/dist/crypto/bn/asm/x86_64-gf2m.pl:1.4 src/crypto/external/bsd/openssl/dist/crypto/bn/asm/x86_64-gf2m.pl:1.5
--- src/crypto/external/bsd/openssl/dist/crypto/bn/asm/x86_64-gf2m.pl:1.4 Fri Oct 14 12:23:18 2016
+++ src/crypto/external/bsd/openssl/dist/crypto/bn/asm/x86_64-gf2m.pl Sat Jan 7 20:55:49 2017
@@ -167,8 +167,9 @@ $code.=<<___;
.type bn_GF2m_mul_2x2,\@abi-omnipotent
.align 16
bn_GF2m_mul_2x2:
- mov OPENSSL_ia32cap_P(%rip),%rax
- bt \$33,%rax
+ mov OPENSSL_ia32cap_P+4(%rip),%rax
+ bt \$1,%rax # check PCLMULQDQ bit
+
jnc .Lvanilla_mul_2x2
movq $a1,%xmm0
