1 files changed, 74 insertions, 0 deletions
diff --git a/comm/third_party/libgcrypt/mpi/aarch64/mpih-add1.S b/comm/third_party/libgcrypt/mpi/aarch64/mpih-add1.S
new file mode 100644
index 0000000000..bc62cf9873
--- /dev/null
+++ b/comm/third_party/libgcrypt/mpi/aarch64/mpih-add1.S
@@ -0,0 +1,74 @@
+/* ARM64 add_n -- Add two limb vectors of the same length > 0 and store
+ *                sum in a third limb vector.
+ *
+ *      Copyright (C) 2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+#include "asm-common-aarch64.h"
+
+/*******************
+ *  mpi_limb_t
+ *  _gcry_mpih_add_n( mpi_ptr_t res_ptr,	x0
+ *		   mpi_ptr_t s1_ptr,		x1
+ *		   mpi_ptr_t s2_ptr,		x2
+ *		   mpi_size_t size)		w3
+ */
+
+.text
+
+.globl _gcry_mpih_add_n
+ELF(.type  _gcry_mpih_add_n,%function)
+_gcry_mpih_add_n:
+	CFI_STARTPROC()
+	and	w5, w3, #3;
+	adds	xzr, xzr, xzr; /* clear carry flag */
+
+	cbz	w5, .Large_loop;
+
+.Loop:
+	ldr	x4, [x1], #8;
+	sub	w3, w3, #1;
+	ldr	x11, [x2], #8;
+	and	w5, w3, #3;
+	adcs	x4, x4, x11;
+	str	x4, [x0], #8;
+	cbz	w3, .Lend;
+	cbnz	w5, .Loop;
+
+.Large_loop:
+	ldp	x4, x6, [x1], #16;
+	ldp	x5, x7, [x2], #16;
+	ldp	x8, x10, [x1], #16;
+	ldp	x9, x11, [x2], #16;
+	sub	w3, w3, #4;
+	adcs	x4, x4, x5;
+	adcs	x6, x6, x7;
+	adcs	x8, x8, x9;
+	adcs	x10, x10, x11;
+	stp	x4, x6, [x0], #16;
+	stp	x8, x10, [x0], #16;
+	cbnz	w3, .Large_loop;
+
+.Lend:
+	adc	x0, xzr, xzr;
+	ret;
+	CFI_ENDPROC()
+ELF(.size _gcry_mpih_add_n,.-_gcry_mpih_add_n;)