1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
! SPARC __mpn_mul_1 -- Multiply a limb vector with a limb and store
! the result in a second limb vector.
!
! Copyright (C) 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
!
! This file is part of the GNU MP Library.
!
! The GNU MP Library is free software; you can redistribute it and/or modify
! it under the terms of the GNU Lesser General Public License as published by
! the Free Software Foundation; either version 2.1 of the License, or (at your
! option) any later version.
!
! The GNU MP Library is distributed in the hope that it will be useful, but
! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
! License for more details.
!
! You should have received a copy of the GNU Lesser General Public License
! along with the GNU MP Library; see the file COPYING.LIB. If not,
! see <http://www.gnu.org/licenses/>.
! INPUT PARAMETERS
! RES_PTR o0
! S1_PTR o1
! SIZE o2
! S2_LIMB o3
! ADD CODE FOR SMALL MULTIPLIERS!
!1: ld
! st
!
!2: ld ,a
! addxcc a,a,x
! st x,
!
!3_unrolled:
! ld ,a
! addxcc a,a,x1 ! 2a + cy
! addx %g0,%g0,x2
! addcc a,x1,x ! 3a + c
! st x,
!
! ld ,a
! addxcc a,a,y1
! addx %g0,%g0,y2
! addcc a,y1,x
! st x,
!
!4_unrolled:
! ld ,a
! srl a,2,x1 ! 4a
! addxcc y2,x1,x
! sll a,30,x2
! st x,
!
! ld ,a
! srl a,2,y1
! addxcc x2,y1,y
! sll a,30,y2
! st x,
!
!5_unrolled:
! ld ,a
! srl a,2,x1 ! 4a
! addxcc a,x1,x ! 5a + c
! sll a,30,x2
! addx %g0,x2,x2
! st x,
!
! ld ,a
! srl a,2,y1
! addxcc a,y1,x
! sll a,30,y2
! addx %g0,y2,y2
! st x,
!
!8_unrolled:
! ld ,a
! srl a,3,x1 ! 8a
! addxcc y2,x1,x
! sll a,29,x2
! st x,
!
! ld ,a
! srl a,3,y1
! addxcc x2,y1,y
! sll a,29,y2
! st x,
#include <sysdep.h>
ENTRY(__mpn_mul_1)
! Make S1_PTR and RES_PTR point at the end of their blocks
! and put (- 4 x SIZE) in index/loop counter.
sll %o2,2,%o2
add %o0,%o2,%o4 ! RES_PTR in o4 since o0 is retval
add %o1,%o2,%o1
sub %g0,%o2,%o2
cmp %o3,0xfff
bgu LOC(large)
nop
ld [%o1+%o2],%o5
mov 0,%o0
b LOC(0)
add %o4,-4,%o4
LOC(loop0):
st %g1,[%o4+%o2]
LOC(0): wr %g0,%o3,%y
sra %o5,31,%g2
and %o3,%g2,%g2
andcc %g1,0,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,%o5,%g1
mulscc %g1,0,%g1
sra %g1,20,%g4
sll %g1,12,%g1
rd %y,%g3
srl %g3,20,%g3
or %g1,%g3,%g1
addcc %g1,%o0,%g1
addx %g2,%g4,%o0 ! add sign-compensation and cy to hi limb
addcc %o2,4,%o2 ! loop counter
bne,a LOC(loop0)
ld [%o1+%o2],%o5
retl
st %g1,[%o4+%o2]
LOC(large):
ld [%o1+%o2],%o5
mov 0,%o0
sra %o3,31,%g4 ! g4 = mask of ones iff S2_LIMB < 0
b LOC(1)
add %o4,-4,%o4
LOC(loop):
st %g3,[%o4+%o2]
LOC(1): wr %g0,%o5,%y
and %o5,%g4,%g2 ! g2 = S1_LIMB iff S2_LIMB < 0, else 0
andcc %g0,%g0,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%o3,%g1
mulscc %g1,%g0,%g1
rd %y,%g3
addcc %g3,%o0,%g3
addx %g2,%g1,%o0 ! add sign-compensation and cy to hi limb
addcc %o2,4,%o2 ! loop counter
bne,a LOC(loop)
ld [%o1+%o2],%o5
retl
st %g3,[%o4+%o2]
END(__mpn_mul_1)
|
