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diff --git a/mpn/mips2/mul_1.s b/mpn/mips2/mul_1.s
new file mode 100644
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+ # MIPS __mpn_mul_1 -- Multiply a limb vector with a single limb and
+ # store the product in a second limb vector.
+
+ # Copyright (C) 1992, 1994, 1996 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 Library General Public License as published by
+ # the Free Software Foundation; either version 2 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 Library General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Library 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.
+
+
+ # INPUT PARAMETERS
+ # res_ptr	$4
+ # s1_ptr	$5
+ # size		$6
+ # s2_limb	$7
+
+	.text
+	.align	 4
+	.globl	 __mpn_mul_1
+	.ent	__mpn_mul_1
+__mpn_mul_1:
+	.set    noreorder
+	.set    nomacro
+
+ # warm up phase 0
+	lw	$8,0($5)
+
+ # warm up phase 1
+	addiu	$5,$5,4
+	multu	$8,$7
+
+	addiu	$6,$6,-1
+	beq	$6,$0,$LC0
+	 move	$2,$0		# zero cy2
+
+	addiu	$6,$6,-1
+	beq	$6,$0,$LC1
+	lw	$8,0($5)	# load new s1 limb as early as possible
+
+Loop:	mflo	$10
+	mfhi	$9
+	addiu	$5,$5,4
+	addu	$10,$10,$2	# add old carry limb to low product limb
+	multu	$8,$7
+	lw	$8,0($5)	# load new s1 limb as early as possible
+	addiu	$6,$6,-1	# decrement loop counter
+	sltu	$2,$10,$2	# carry from previous addition -> $2
+	sw	$10,0($4)
+	addiu	$4,$4,4
+	bne	$6,$0,Loop
+	 addu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 1
+$LC1:	mflo	$10
+	mfhi	$9
+	addu	$10,$10,$2
+	sltu	$2,$10,$2
+	multu	$8,$7
+	sw	$10,0($4)
+	addiu	$4,$4,4
+	addu	$2,$9,$2	# add high product limb and carry from addition
+
+ # cool down phase 0
+$LC0:	mflo	$10
+	mfhi	$9
+	addu	$10,$10,$2
+	sltu	$2,$10,$2
+	sw	$10,0($4)
+	j	$31
+	addu	$2,$9,$2	# add high product limb and carry from addition
+
+	.end	__mpn_mul_1