1 # Alpha EV5 __mpn_lshift --
3 # Copyright (C) 1994, 1995 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. If not, see <http://www.gnu.org/licenses/>.
27 # This code runs at 3.25 cycles/limb on the EV5.
38 s8addq $
18,$
17,$
17 # make r17 point at end of s1
39 ldq $
4,-8($
17) # load first limb
41 s8addq $
18,$
16,$
16 # make r16 point at end of RES
43 and $
18,4-1,$
28 # number of limbs in first loop
44 srl $
4,$
20,$
0 # compute function result
50 .Loop0: ldq $3,-16($17)
97 unop
# ldq $31,-96($17)
110 unop
# ldq $31,-96($17)
121 # cool down phase 2/1
122 .Lend2: stq $7,-8($16)
138 # cool down phase 2/2
145 # cool down phase 2/3
149 # cool down phase 1/1
150 .Lend1: srl $1,$20,$7
160 # cool down phase 1/2
170 .Lend: stq $24,-8($16)