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diff --git a/rts/gmp/mpn/ns32k/addmul_1.s b/rts/gmp/mpn/ns32k/addmul_1.s
new file mode 100644
index 0000000..df0dcdd
--- /dev/null
+++ b/rts/gmp/mpn/ns32k/addmul_1.s
@@ -0,0 +1,48 @@
+# ns32000 __gmpn_addmul_1 -- Multiply a limb vector with a limb and add
+# the result to a second limb vector.
+
+# Copyright (C) 1992, 1994, 2000 Free Software Foundation, Inc.
+
+# This file is part of the GNU MP Library.
+
+# The GNU MP Library 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.
+
+# The GNU MP Library 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 the GNU MP Library; see the file COPYING.LIB.  If not, write to
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
+
+
+	.align 1
+.globl ___gmpn_addmul_1
+___gmpn_addmul_1:
+	save	[r3,r4,r5,r6,r7]
+	negd	24(sp),r4
+	movd	r4,r0
+	lshd	2,r0
+	movd	20(sp),r5
+	subd	r0,r5			# r5 -> to end of S1
+	movd	16(sp),r6
+	subd	r0,r6			# r6 -> to end of RES
+	subd	r0,r0			# r0 = 0, cy = 0
+	movd	28(sp),r7		# r7 = s2_limb
+
+Loop:	movd	r5[r4:d],r2
+	meid	r7,r2			# r2 = low_prod, r3 = high_prod
+	addcd	r0,r2			# r2 = low_prod + cy_limb
+	movd	r3,r0			# r0 = new cy_limb
+	addcd	0,r0
+	addd	r2,r6[r4:d]
+	acbd	1,r4,Loop
+
+	addcd	0,r0
+	restore	[r7,r6,r5,r4,r3]
+	ret	0