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
|
dnl x86-32 mpn_mod_1_1p for Pentium 4 and P6 models with SSE2 (i.e., 9,D,E,F).
dnl Contributed to the GNU project by Torbjorn Granlund.
dnl Copyright 2009, 2010 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of either:
dnl
dnl * the GNU Lesser General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl or
dnl
dnl * the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any
dnl later version.
dnl
dnl or both in parallel, as here.
dnl
dnl The GNU MP Library is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
dnl for more details.
dnl
dnl You should have received copies of the GNU General Public License and the
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
dnl see https://www.gnu.org/licenses/.
include(`../config.m4')
C TODO:
C * Optimize. The present code was written quite straightforwardly.
C * Optimize post-loop reduction code; it is from mod_1s_4p, thus overkill.
C * Write a cps function that uses sse2 insns.
C cycles/limb
C P6 model 0-8,10-12 -
C P6 model 9 (Banias) ?
C P6 model 13 (Dothan) ?
C P4 model 0-1 (Willamette) ?
C P4 model 2 (Northwood) 16
C P4 model 3-4 (Prescott) 18
C INPUT PARAMETERS
C ap sp + 4
C n sp + 8
C b sp + 12
C cps sp + 16
define(`B1modb', `%mm1')
define(`B2modb', `%mm2')
define(`ap', `%edx')
define(`n', `%eax')
TEXT
ALIGN(16)
PROLOGUE(mpn_mod_1_1p)
push %ebx
mov 8(%esp), ap
mov 12(%esp), n
mov 20(%esp), %ecx
movd 8(%ecx), B1modb
movd 12(%ecx), B2modb
lea -4(ap,n,4), ap
C FIXME: See comment in generic/mod_1_1.c.
movd (ap), %mm7
movd -4(ap), %mm4
pmuludq B1modb, %mm7
paddq %mm4, %mm7
add $-2, n
jz L(end)
ALIGN(8)
L(top): movq %mm7, %mm6
psrlq $32, %mm7 C rh
movd -8(ap), %mm0
add $-4, ap
pmuludq B2modb, %mm7
pmuludq B1modb, %mm6
add $-1, n
paddq %mm0, %mm7
paddq %mm6, %mm7
jnz L(top)
L(end): pcmpeqd %mm4, %mm4
psrlq $32, %mm4 C 0x00000000FFFFFFFF
pand %mm7, %mm4 C rl
psrlq $32, %mm7 C rh
pmuludq B1modb, %mm7 C rh,cl
paddq %mm4, %mm7 C rh,rl
movd 4(%ecx), %mm4 C cnt
psllq %mm4, %mm7 C rh,rl normalized
movq %mm7, %mm2 C rl in low half
psrlq $32, %mm7 C rh
movd (%ecx), %mm1 C bi
pmuludq %mm7, %mm1 C qh,ql
paddq %mm2, %mm1 C qh-1,ql
movd %mm1, %ecx C ql
psrlq $32, %mm1 C qh-1
movd 16(%esp), %mm3 C b
pmuludq %mm1, %mm3 C (qh-1) * b
psubq %mm3, %mm2 C r in low half (could use psubd)
movd %mm2, %eax C r
mov 16(%esp), %ebx
sub %ebx, %eax C r
cmp %eax, %ecx
lea (%eax,%ebx), %edx
cmovc( %edx, %eax)
movd %mm4, %ecx C cnt
cmp %ebx, %eax
jae L(fix)
emms
pop %ebx
shr %cl, %eax
ret
L(fix): sub %ebx, %eax
emms
pop %ebx
shr %cl, %eax
ret
EPILOGUE()
PROLOGUE(mpn_mod_1_1p_cps)
C CAUTION: This is the same code as in k7/mod_1_1.asm
push %ebp
mov 12(%esp), %ebp
push %esi
bsr %ebp, %ecx
push %ebx
xor $31, %ecx
mov 16(%esp), %esi
sal %cl, %ebp
mov %ebp, %edx
not %edx
mov $-1, %eax
div %ebp
mov %eax, (%esi) C store bi
mov %ecx, 4(%esi) C store cnt
xor %ebx, %ebx
sub %ebp, %ebx
mov $1, %edx
shld %cl, %eax, %edx
imul %edx, %ebx
mul %ebx
add %ebx, %edx
not %edx
imul %ebp, %edx
add %edx, %ebp
cmp %edx, %eax
cmovc( %ebp, %edx)
shr %cl, %ebx
mov %ebx, 8(%esi) C store B1modb
shr %cl, %edx
mov %edx, 12(%esi) C store B2modb
pop %ebx
pop %esi
pop %ebp
ret
EPILOGUE()
|
