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, 1999 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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser 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. */
37 mov 0,%o0 ! zero cy_limb
39 sethi %hi(0x80000000),%o2
40 srl %i3,0,%o1 ! extract low 32 bits of s2_limb
42 srlx %i3,32,%i3 ! extract high 32 bits of s2_limb
44 add %o2,%o2,%o2 ! o2 = 0x100000000
52 srl %g5,0,%i0 ! zero hi bits
55 mulx %o1,%i0,%i4 ! lo product
56 mulx %i3,%i0,%i1 ! mid-1 product
57 mulx %o1,%g5,%l2 ! mid-2 product
58 mulx %i3,%g5,%i5 ! hi product
59 srlx %i4,32,%i0 ! extract high 32 bits of lo product...
60 add %i1,%i0,%i1 ! ...and add it to the mid-1 product
61 addcc %i1,%l2,%i1 ! add mid products
62 mov 0,%l0 ! we need the carry from that add...
63 movcs %xcc,%o2,%l0 ! ...compute it and...
64 sllx %i1,32,%i0 ! align low bits of mid product
65 add %i5,%l0,%i5 ! ...add to bit 32 of the hi product
66 srl %i4,0,%g5 ! zero high 32 bits of lo product
67 add %i0,%g5,%i0 ! combine into low 64 bits of result
68 srlx %i1,32,%i1 ! extract high bits of mid product...
69 addcc %i0,%o0,%i0 ! add cy_limb to low 64 bits of result
70 add %i5,%i1,%i1 ! ...and add them to the high result
79 add %i1,%g5,%o0 ! compute new cy_limb