From 26c046fbc57d53136b4fb3b5e0d18298318125d4 Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Mon, 9 Nov 2015 05:12:59 +0000
Subject: nss-3.21

---
 nss/lib/freebl/mpi/mpi_hp.c | 82 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 nss/lib/freebl/mpi/mpi_hp.c

(limited to 'nss/lib/freebl/mpi/mpi_hp.c')

diff --git a/nss/lib/freebl/mpi/mpi_hp.c b/nss/lib/freebl/mpi/mpi_hp.c
new file mode 100644
index 0000000..e86d3d6
--- /dev/null
+++ b/nss/lib/freebl/mpi/mpi_hp.c
@@ -0,0 +1,82 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This file contains routines that perform vector multiplication.  */
+
+#include "mpi-priv.h"
+#include <unistd.h>
+
+#include <stddef.h>
+/* #include <sys/systeminfo.h> */
+#include <strings.h>
+
+extern void multacc512( 
+   int             length,        /* doublewords in multiplicand vector. */
+   const mp_digit *scalaraddr,    /* Address of scalar. */
+   const mp_digit *multiplicand,  /* The multiplicand vector. */
+   mp_digit *      result);       /* Where to accumulate the result. */
+
+extern void maxpy_little(
+   int             length,        /* doublewords in multiplicand vector. */
+   const mp_digit *scalaraddr,    /* Address of scalar. */
+   const mp_digit *multiplicand,  /* The multiplicand vector. */
+   mp_digit *      result);       /* Where to accumulate the result. */
+
+extern void add_diag_little(
+   int            length,       /* doublewords in input vector. */
+   const mp_digit *root,         /* The vector to square. */
+   mp_digit *      result);      /* Where to accumulate the result. */
+
+void 
+s_mpv_sqr_add_prop(const mp_digit *pa, mp_size a_len, mp_digit *ps)
+{
+    add_diag_little(a_len, pa, ps);
+}
+
+#define MAX_STACK_DIGITS 258
+#define MULTACC512_LEN   (512 / MP_DIGIT_BIT)
+#define HP_MPY_ADD_FN    (a_len == MULTACC512_LEN ? multacc512 : maxpy_little)
+
+/* c = a * b */
+void 
+s_mpv_mul_d(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c)
+{
+    mp_digit x[MAX_STACK_DIGITS];
+    mp_digit *px = x;
+    size_t   xSize = 0;
+
+    if (a == c) {
+	if (a_len > MAX_STACK_DIGITS) {
+	    xSize = sizeof(mp_digit) * (a_len + 2);
+	    px = malloc(xSize);
+	    if (!px)
+		return;
+	}
+	memcpy(px, a, a_len * sizeof(*a));
+	a = px;
+    }
+    s_mp_setz(c, a_len + 1);
+    HP_MPY_ADD_FN(a_len, &b, a, c);
+    if (px != x && px) {
+	memset(px, 0, xSize);
+	free(px);
+    }
+}
+
+/* c += a * b, where a is a_len words long. */
+void     
+s_mpv_mul_d_add(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c)
+{
+    c[a_len] = 0;	/* so carry propagation stops here. */
+    HP_MPY_ADD_FN(a_len, &b, a, c);
+}
+
+/* c += a * b, where a is y words long. */
+void     
+s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, mp_digit b, 
+			 mp_digit *c)
+{
+    HP_MPY_ADD_FN(a_len, &b, a, c);
+}
+
-- 
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