Add missing include of cryptlib.h

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

diff --git a/crypto/bn/bn_div.c b/crypto/bn/bn_div.c
index eef1b878c810c9eb3841ea09f7fea204b628ebf0..bd49e07dbc1acce8d7413bfe1810faaa596c42c4 100644 (file)
--- a/crypto/bn/bn_div.c
+++ b/crypto/bn/bn_div.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2017 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
@@ -105,7 +105,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
         ({  asm volatile (                      \
                 "divl   %4"                     \
                 : "=a"(q), "=d"(rem)            \
-                : "a"(n1), "d"(n0), "g"(d0)     \
+                : "a"(n1), "d"(n0), "r"(d0)     \
                 : "cc");                        \
             q;                                  \
         })
@@ -120,7 +120,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
         ({  asm volatile (                      \
                 "divq   %4"                     \
                 : "=a"(q), "=d"(rem)            \
-                : "a"(n1), "d"(n0), "g"(d0)     \
+                : "a"(n1), "d"(n0), "r"(d0)     \
                 : "cc");                        \
             q;                                  \
         })
@@ -130,7 +130,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
 # endif                         /* OPENSSL_NO_ASM */
 
 /*-
- * BN_div computes  dv := num / divisor,  rounding towards
+ * BN_div computes  dv := num / divisor, rounding towards
  * zero, and sets up rm  such that  dv*divisor + rm = num  holds.
  * Thus:
  *     dv->neg == num->neg ^ divisor->neg  (unless the result is zero)
@@ -191,14 +191,11 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
     }
 
     BN_CTX_start(ctx);
+    res = (dv == NULL) ? BN_CTX_get(ctx) : dv;
     tmp = BN_CTX_get(ctx);
     snum = BN_CTX_get(ctx);
     sdiv = BN_CTX_get(ctx);
-    if (dv == NULL)
-        res = BN_CTX_get(ctx);
-    else
-        res = dv;
-    if (sdiv == NULL || res == NULL || tmp == NULL || snum == NULL)
+    if (sdiv == NULL)
         goto err;
 
     /* First we normalise the numbers */
@@ -254,9 +251,9 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
     wnump = &(snum->d[num_n - 1]);
 
     /* Setup to 'res' */
-    res->neg = (num->neg ^ divisor->neg);
     if (!bn_wexpand(res, (loop + 1)))
         goto err;
+    res->neg = (num->neg ^ divisor->neg);
     res->top = loop - no_branch;
     resp = &(res->d[loop - 1]);