bn/bn_add.c: address performance regression.

[openssl.git] / crypto / bn / rsaz_exp.c

diff --git a/crypto/bn/rsaz_exp.c b/crypto/bn/rsaz_exp.c
index c54c6feb51b560602b163c7639351afb85a17ec8..1a70f6caded2eab20b0a0b4026556c23bf3b93a0 100644 (file)
--- a/crypto/bn/rsaz_exp.c
+++ b/crypto/bn/rsaz_exp.c
@@ -1,3 +1,12 @@
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
 /*****************************************************************************
 *                                                                            *
 *  Copyright (c) 2012, Intel Corporation                                     *
@@ -40,9 +49,12 @@
 * (2) University of Haifa, Israel                                            *
 *****************************************************************************/
 
+#include <openssl/opensslconf.h>
 #include "rsaz_exp.h"
 
-#ifdef RSAZ_ENABLED
+#ifndef RSAZ_ENABLED
+NON_EMPTY_TRANSLATION_UNIT
+#else
 
 /*
  * See crypto/bn/asm/rsaz-avx2.pl for further details.
@@ -241,7 +253,7 @@ void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
 
         rsaz_1024_sqr_avx2(result, result, m, k0, 5);
 
-        wvalue = *((unsigned short *)&p_str[index / 8]);
+        wvalue = (p_str[(index / 8) + 1] << 8) | p_str[index / 8];
         wvalue = (wvalue >> (index % 8)) & 31;
         index -= 5;
 
@@ -337,10 +349,4 @@ void RSAZ_512_mod_exp(BN_ULONG result[8],
     OPENSSL_cleanse(storage, sizeof(storage));
 }
 
-#else
-
-# if defined(PEDANTIC) || defined(__DECC) || defined(__clang__)
-static void *dummy = &dummy;
-# endif
-
 #endif