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diff --git a/gmp/mpn/power/umul.asm b/gmp/mpn/power/umul.asm
new file mode 100644
index 00000000..996f2e6c
--- /dev/null
+++ b/gmp/mpn/power/umul.asm
@@ -0,0 +1,32 @@
+dnl  Copyright 1999, 2001 Free Software Foundation, Inc.
+
+dnl  This file is part of the GNU MP Library.
+
+dnl  The GNU MP Library is free software; you can redistribute it and/or modify
+dnl  it under the terms of the GNU Lesser General Public License as published
+dnl  by the Free Software Foundation; either version 3 of the License, or (at
+dnl  your option) any later version.
+
+dnl  The GNU MP Library is distributed in the hope that it will be useful, but
+dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+dnl  License for more details.
+
+dnl  You should have received a copy of the GNU Lesser General Public License
+dnl  along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+ASM_START()
+PROLOGUE(mpn_umul_ppmm)
+	mul	9,4,5
+	srai	0,4,31
+	and	0,0,5
+	srai	5,5,31
+	and	5,5,4
+	cax	0,0,5
+	mfmq	11
+	st	11,0(3)
+	cax	3,9,0
+	br
+EPILOGUE(mpn_umul_ppmm)