1 /* SPARC v9 __mpn_lshift --
3 Copyright (C) 1996-2017 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15 License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with the GNU MP Library; see the file COPYING.LIB. If not,
19 see <http://www.gnu.org/licenses/>. */
29 .register %g2, #scratch
30 .register %g3, #scratch
34 add %o1,%g1,%o1 ! make %o1 point at end of src
35 ldx [%o1-8],%g2 ! load first limb
36 sub %g0,%o3,%o5 ! negate shift count
37 add %o0,%g1,%o0 ! make %o0 point at end of res
39 andcc %o2,4-1,%g4 ! number of limbs in first loop
40 srlx %g2,%o5,%g1 ! compute function result
41 be,pn %xcc,.L0 ! if multiple of 4 limbs, skip first loop
44 sub %o2,%g4,%o2 ! adjust count for main loop
46 .Loop0: ldx [%o1-16],%g3
60 .Loop: ldx [%o1-16],%g3
89 .Lend: sllx %g2,%o3,%g2