Merge pull request #6830 from akien-mga/thirdparty

Move most "drivers" as toggleable "modules" and split their thirdparty libraries in an own tree

1 files changed, 290 insertions, 0 deletions

diff --git a/thirdparty/openssl/crypto/bn/bn_sqr.c b/thirdparty/openssl/crypto/bn/bn_sqr.c
new file mode 100644
index 0000000000..3ca69879ee
--- /dev/null
+++ b/thirdparty/openssl/crypto/bn/bn_sqr.c
@@ -0,0 +1,290 @@
+/* crypto/bn/bn_sqr.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include "bn_lcl.h"
+
+/* r must not be a */
+/*
+ * I've just gone over this and it is now %20 faster on x86 - eay - 27 Jun 96
+ */
+int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
+{
+    int max, al;
+    int ret = 0;
+    BIGNUM *tmp, *rr;
+
+#ifdef BN_COUNT
+    fprintf(stderr, "BN_sqr %d * %d\n", a->top, a->top);
+#endif
+    bn_check_top(a);
+
+    al = a->top;
+    if (al <= 0) {
+        r->top = 0;
+        r->neg = 0;
+        return 1;
+    }
+
+    BN_CTX_start(ctx);
+    rr = (a != r) ? r : BN_CTX_get(ctx);
+    tmp = BN_CTX_get(ctx);
+    if (!rr || !tmp)
+        goto err;
+
+    max = 2 * al;               /* Non-zero (from above) */
+    if (bn_wexpand(rr, max) == NULL)
+        goto err;
+
+    if (al == 4) {
+#ifndef BN_SQR_COMBA
+        BN_ULONG t[8];
+        bn_sqr_normal(rr->d, a->d, 4, t);
+#else
+        bn_sqr_comba4(rr->d, a->d);
+#endif
+    } else if (al == 8) {
+#ifndef BN_SQR_COMBA
+        BN_ULONG t[16];
+        bn_sqr_normal(rr->d, a->d, 8, t);
+#else
+        bn_sqr_comba8(rr->d, a->d);
+#endif
+    } else {
+#if defined(BN_RECURSION)
+        if (al < BN_SQR_RECURSIVE_SIZE_NORMAL) {
+            BN_ULONG t[BN_SQR_RECURSIVE_SIZE_NORMAL * 2];
+            bn_sqr_normal(rr->d, a->d, al, t);
+        } else {
+            int j, k;
+
+            j = BN_num_bits_word((BN_ULONG)al);
+            j = 1 << (j - 1);
+            k = j + j;
+            if (al == j) {
+                if (bn_wexpand(tmp, k * 2) == NULL)
+                    goto err;
+                bn_sqr_recursive(rr->d, a->d, al, tmp->d);
+            } else {
+                if (bn_wexpand(tmp, max) == NULL)
+                    goto err;
+                bn_sqr_normal(rr->d, a->d, al, tmp->d);
+            }
+        }
+#else
+        if (bn_wexpand(tmp, max) == NULL)
+            goto err;
+        bn_sqr_normal(rr->d, a->d, al, tmp->d);
+#endif
+    }
+
+    rr->neg = 0;
+    /*
+     * If the most-significant half of the top word of 'a' is zero, then the
+     * square of 'a' will max-1 words.
+     */
+    if (a->d[al - 1] == (a->d[al - 1] & BN_MASK2l))
+        rr->top = max - 1;
+    else
+        rr->top = max;
+    if (rr != r)
+        BN_copy(r, rr);
+    ret = 1;
+ err:
+    bn_check_top(rr);
+    bn_check_top(tmp);
+    BN_CTX_end(ctx);
+    return (ret);
+}
+
+/* tmp must have 2*n words */
+void bn_sqr_normal(BN_ULONG *r, const BN_ULONG *a, int n, BN_ULONG *tmp)
+{
+    int i, j, max;
+    const BN_ULONG *ap;
+    BN_ULONG *rp;
+
+    max = n * 2;
+    ap = a;
+    rp = r;
+    rp[0] = rp[max - 1] = 0;
+    rp++;
+    j = n;
+
+    if (--j > 0) {
+        ap++;
+        rp[j] = bn_mul_words(rp, ap, j, ap[-1]);
+        rp += 2;
+    }
+
+    for (i = n - 2; i > 0; i--) {
+        j--;
+        ap++;
+        rp[j] = bn_mul_add_words(rp, ap, j, ap[-1]);
+        rp += 2;
+    }
+
+    bn_add_words(r, r, r, max);
+
+    /* There will not be a carry */
+
+    bn_sqr_words(tmp, a, n);
+
+    bn_add_words(r, r, tmp, max);
+}
+
+#ifdef BN_RECURSION
+/*-
+ * r is 2*n words in size,
+ * a and b are both n words in size.    (There's not actually a 'b' here ...)
+ * n must be a power of 2.
+ * We multiply and return the result.
+ * t must be 2*n words in size
+ * We calculate
+ * a[0]*b[0]
+ * a[0]*b[0]+a[1]*b[1]+(a[0]-a[1])*(b[1]-b[0])
+ * a[1]*b[1]
+ */
+void bn_sqr_recursive(BN_ULONG *r, const BN_ULONG *a, int n2, BN_ULONG *t)
+{
+    int n = n2 / 2;
+    int zero, c1;
+    BN_ULONG ln, lo, *p;
+
+# ifdef BN_COUNT
+    fprintf(stderr, " bn_sqr_recursive %d * %d\n", n2, n2);
+# endif
+    if (n2 == 4) {
+# ifndef BN_SQR_COMBA
+        bn_sqr_normal(r, a, 4, t);
+# else
+        bn_sqr_comba4(r, a);
+# endif
+        return;
+    } else if (n2 == 8) {
+# ifndef BN_SQR_COMBA
+        bn_sqr_normal(r, a, 8, t);
+# else
+        bn_sqr_comba8(r, a);
+# endif
+        return;
+    }
+    if (n2 < BN_SQR_RECURSIVE_SIZE_NORMAL) {
+        bn_sqr_normal(r, a, n2, t);
+        return;
+    }
+    /* r=(a[0]-a[1])*(a[1]-a[0]) */
+    c1 = bn_cmp_words(a, &(a[n]), n);
+    zero = 0;
+    if (c1 > 0)
+        bn_sub_words(t, a, &(a[n]), n);
+    else if (c1 < 0)
+        bn_sub_words(t, &(a[n]), a, n);
+    else
+        zero = 1;
+
+    /* The result will always be negative unless it is zero */
+    p = &(t[n2 * 2]);
+
+    if (!zero)
+        bn_sqr_recursive(&(t[n2]), t, n, p);
+    else
+        memset(&(t[n2]), 0, n2 * sizeof(BN_ULONG));
+    bn_sqr_recursive(r, a, n, p);
+    bn_sqr_recursive(&(r[n2]), &(a[n]), n, p);
+
+    /*-
+     * t[32] holds (a[0]-a[1])*(a[1]-a[0]), it is negative or zero
+     * r[10] holds (a[0]*b[0])
+     * r[32] holds (b[1]*b[1])
+     */
+
+    c1 = (int)(bn_add_words(t, r, &(r[n2]), n2));
+
+    /* t[32] is negative */
+    c1 -= (int)(bn_sub_words(&(t[n2]), t, &(t[n2]), n2));
+
+    /*-
+     * t[32] holds (a[0]-a[1])*(a[1]-a[0])+(a[0]*a[0])+(a[1]*a[1])
+     * r[10] holds (a[0]*a[0])
+     * r[32] holds (a[1]*a[1])
+     * c1 holds the carry bits
+     */
+    c1 += (int)(bn_add_words(&(r[n]), &(r[n]), &(t[n2]), n2));
+    if (c1) {
+        p = &(r[n + n2]);
+        lo = *p;
+        ln = (lo + c1) & BN_MASK2;
+        *p = ln;
+
+        /*
+         * The overflow will stop before we over write words we should not
+         * overwrite
+         */
+        if (ln < (BN_ULONG)c1) {
+            do {
+                p++;
+                lo = *p;
+                ln = (lo + 1) & BN_MASK2;
+                *p = ln;
+            } while (ln == 0);
+        }
+    }
+}
+#endif