1 /* SPARC v9 __mpn_addmul_1 -- Multiply a limb vector with a single limb and
2 add the product to a second limb vector.
4 Copyright (C) 1996 Free Software Foundation, Inc.
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Library General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or (at your
11 option) any later version.
13 The GNU MP Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
16 License for more details.
18 You should have received a copy of the GNU Library General Public License
19 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21 MA 02111-1307, USA. */
42 mov 0,%o0 ! zero cy_limb
44 srl %i3,0,%o1 ! extract low 32 bits of s2_limb
45 srlx %i3,32,%i3 ! extract high 32 bits of s2_limb
47 sllx %o2,32,%o2 ! o2 = 0x100000000
56 srl %g5,0,%i0 ! zero hi bits
58 mulx %o1,%i0,%i4 ! lo product
59 mulx %i3,%i0,%i1 ! mid-1 product
60 mulx %o1,%g5,%l2 ! mid-2 product
61 mulx %i3,%g5,%i5 ! hi product
62 srlx %i4,32,%i0 ! extract high 32 bits of lo product...
63 add %i1,%i0,%i1 ! ...and add it to the mid-1 product
64 addcc %i1,%l2,%i1 ! add mid products
65 mov 0,%l0 ! we need the carry from that add...
66 movcs %xcc,%o2,%l0 ! ...compute it and...
67 add %i5,%l0,%i5 ! ...add to bit 32 of the hi product
68 sllx %i1,32,%i0 ! align low bits of mid product
69 srl %i4,0,%g5 ! zero high 32 bits of lo product
70 add %i0,%g5,%i0 ! combine into low 64 bits of result
71 srlx %i1,32,%i1 ! extract high bits of mid product...
72 add %i5,%i1,%i1 ! ...and add them to the high result
73 addcc %i0,%o0,%i0 ! add cy_limb to low 64 bits of result
82 add %i1,%g5,%o0 ! compute new cy_limb