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diff --git a/sysdeps/sparc/sparc64/addmul_1.S b/sysdeps/sparc/sparc64/addmul_1.S
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+/* SPARC v9 __mpn_addmul_1 -- Multiply a limb vector with a single limb and
+ add the product to a second limb vector.
+
+ Copyright (C) 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. */
+
+#include <sysdep.h>
+
+
+/* INPUT PARAMETERS
+ res_ptr o0
+ s1_ptr o1
+ size o2
+ s2_limb o3 */
+
+
+ENTRY(__mpn_addmul_1)
+ !#PROLOGUE# 0
+ save %sp,-128,%sp
+ !#PROLOGUE# 1
+
+ sub %g0,%i2,%o7
+ sllx %o7,3,%g5
+ sub %i1,%g5,%o3
+ sub %i0,%g5,%o4
+ mov 0,%o0 ! zero cy_limb
+
+ srl %i3,0,%o1 ! extract low 32 bits of s2_limb
+ srlx %i3,32,%i3 ! extract high 32 bits of s2_limb
+ mov 1,%o2
+ sllx %o2,32,%o2 ! o2 = 0x100000000
+
+ ! hi !
+ ! mid-1 !
+ ! mid-2 !
+ ! lo !
+1:
+ sllx %o7,3,%g1
+ ldx [%o3+%g1],%g5
+ srl %g5,0,%i0 ! zero hi bits
+ srlx %g5,32,%g5
+ mulx %o1,%i0,%i4 ! lo product
+ mulx %i3,%i0,%i1 ! mid-1 product
+ mulx %o1,%g5,%l2 ! mid-2 product
+ mulx %i3,%g5,%i5 ! hi product
+ srlx %i4,32,%i0 ! extract high 32 bits of lo product...
+ add %i1,%i0,%i1 ! ...and add it to the mid-1 product
+ addcc %i1,%l2,%i1 ! add mid products
+ mov 0,%l0 ! we need the carry from that add...
+ movcs %xcc,%o2,%l0 ! ...compute it and...
+ add %i5,%l0,%i5 ! ...add to bit 32 of the hi product
+ sllx %i1,32,%i0 ! align low bits of mid product
+ srl %i4,0,%g5 ! zero high 32 bits of lo product
+ add %i0,%g5,%i0 ! combine into low 64 bits of result
+ srlx %i1,32,%i1 ! extract high bits of mid product...
+ add %i5,%i1,%i1 ! ...and add them to the high result
+ addcc %i0,%o0,%i0 ! add cy_limb to low 64 bits of result
+ mov 0,%g5
+ movcs %xcc,1,%g5
+ add %o7,1,%o7
+ ldx [%o4+%g1],%l1
+ addcc %l1,%i0,%i0
+ movcs %xcc,1,%g5
+ stx %i0,[%o4+%g1]
+ brnz %o7,1b
+ add %i1,%g5,%o0 ! compute new cy_limb
+
+ mov %o0,%i0
+ jmpl %i7+8, %g0
+ restore
+
+END(__mpn_addmul_1)