From: Andy Polyakov <appro@openssl.org>
Date: Wed, 6 Mar 2013 09:42:21 +0000 (+0100)
Subject: ghash-x86_64.pl: fix length handling bug.
X-Git-Tag: master-pre-reformat~1339
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=28997596f2782d7b09203ac4f01e1f6bf97663cd;p=openssl

ghash-x86_64.pl: fix length handling bug.

Thanks to Shay Gueron & Vlad Krasnov for report.
---

diff --git a/crypto/modes/asm/ghash-x86_64.pl b/crypto/modes/asm/ghash-x86_64.pl
index 4bbd4ab5d6..df4101cc2d 100644
--- a/crypto/modes/asm/ghash-x86_64.pl
+++ b/crypto/modes/asm/ghash-x86_64.pl
@@ -754,8 +754,9 @@ ___
 $code.=<<___;
 	add	\$0x40,$len
 	jz	.Ldone
-	sub	\$0x10,$len
 	movdqu	0x20($Htbl),$HK
+	sub	\$0x10,$len
+	jz	.Lodd_tail
 .Lskip4x:
 ___
 }