1 ; 29000 __gmpn_lshift --
3 ; Copyright 1992, 1994, 2000 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 3 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. If not, see http://www.gnu.org/licenses/.
27 ; We use the loadm/storem instructions and operate on chunks of 8
28 ; limbs/per iteration, until less than 8 limbs remain.
33 .global ___gmpn_lshift
43 srl gr96,gr119,gr116 ; return value
44 sub lr4,lr4,1 ; actual loop count is SIZE - 1
46 srl gr117,lr4,3 ; chuck count = (actual count) / 8
51 sub gr117,gr117,2 ; count for jmpfdec
53 ; Main loop working 8 limbs/iteration.
58 extract gr109,gr119,gr107
59 extract gr108,gr107,gr106
60 extract gr107,gr106,gr105
61 extract gr106,gr105,gr104
62 extract gr105,gr104,gr103
63 extract gr104,gr103,gr102
64 extract gr103,gr102,gr101
65 extract gr102,gr101,gr100
73 ; Code for the last up-to-7 limbs.
76 Ltail: cpeq gr118,lr4,0
78 sub lr4,lr4,2 ; count for jmpfdec
82 extract gr117,gr119,gr116
88 Lend: extract gr117,gr119,0