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diff --git a/rts/gmp/mpn/hppa/hppa1_1/umul.s b/rts/gmp/mpn/hppa/hppa1_1/umul.s
new file mode 100644
index 0000000..1f1300a
--- /dev/null
+++ b/rts/gmp/mpn/hppa/hppa1_1/umul.s
@@ -0,0 +1,42 @@
+; Copyright (C) 1999 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.
+
+	.code
+	.export		__umul_ppmm
+	.align 4
+__umul_ppmm
+	.proc
+	.callinfo frame=64,no_calls
+	.entry
+
+	ldo 64(%r30),%r30
+	stw %r25,-16(0,%r30)
+	fldws -16(0,%r30),%fr22R
+	stw %r24,-16(0,%r30)
+	fldws -16(0,%r30),%fr22L
+	xmpyu %fr22R,%fr22L,%fr22
+	fstds %fr22,-16(0,%r30)
+	ldw -16(0,%r30),%r28
+	ldw -12(0,%r30),%r29
+	stw %r29,0(0,%r26)
+	bv 0(%r2)
+	ldo -64(%r30),%r30
+
+	.exit
+	.procend