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
|
dnl Intel P6 mpn_add_n/mpn_sub_n -- mpn add or subtract.
dnl Copyright 2006 Free Software Foundation, Inc.
dnl
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 the GNU Lesser General Public License as published
dnl by the Free Software Foundation; either version 3 of the License, or (at
dnl your option) any later version.
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 Lesser General Public
dnl License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public License
dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
include(`../config.m4')
C TODO:
C * Avoid indexed adressing, it makes us stall on the two-ported register
C file.
C cycles/limb
C P6 model 0-8,10-12) 3.17
C P6 model 9 (Banias) ?
C P6 model 13 (Dothan) 2.25
define(`rp', `%edi')
define(`up', `%esi')
define(`vp', `%ebx')
define(`n', `%ecx')
ifdef(`OPERATION_add_n', `
define(ADCSBB, adc)
define(func, mpn_add_n)
define(func_nc, mpn_add_nc)')
ifdef(`OPERATION_sub_n', `
define(ADCSBB, sbb)
define(func, mpn_sub_n)
define(func_nc, mpn_sub_nc)')
MULFUNC_PROLOGUE(mpn_add_n mpn_add_nc mpn_sub_n mpn_sub_nc)
ASM_START()
TEXT
ALIGN(16)
PROLOGUE(func)
xor %edx, %edx
L(start):
push %edi
push %esi
push %ebx
mov 16(%esp), rp
mov 20(%esp), up
mov 24(%esp), vp
mov 28(%esp), n
lea (up,n,4), up
lea (vp,n,4), vp
lea (rp,n,4), rp
neg n
mov n, %eax
and $-8, n
and $7, %eax
shl $2, %eax C 4x
ifdef(`PIC',`
call L(pic_calc)
L(here):
',`
lea L(ent) (%eax,%eax,2), %eax C 12x
')
shr %edx C set cy flag
jmp *%eax
ifdef(`PIC',`
L(pic_calc):
C See mpn/x86/README about old gas bugs
lea (%eax,%eax,2), %eax
add $L(ent)-L(here), %eax
add (%esp), %eax
ret_internal
')
L(end):
sbb %eax, %eax
neg %eax
pop %ebx
pop %esi
pop %edi
ret
ALIGN(16)
L(top):
jecxz L(end)
L(ent):
Zdisp( mov, 0,(up,n,4), %eax)
Zdisp( ADCSBB, 0,(vp,n,4), %eax)
Zdisp( mov, %eax, 0,(rp,n,4))
mov 4(up,n,4), %edx
ADCSBB 4(vp,n,4), %edx
mov %edx, 4(rp,n,4)
mov 8(up,n,4), %eax
ADCSBB 8(vp,n,4), %eax
mov %eax, 8(rp,n,4)
mov 12(up,n,4), %edx
ADCSBB 12(vp,n,4), %edx
mov %edx, 12(rp,n,4)
mov 16(up,n,4), %eax
ADCSBB 16(vp,n,4), %eax
mov %eax, 16(rp,n,4)
mov 20(up,n,4), %edx
ADCSBB 20(vp,n,4), %edx
mov %edx, 20(rp,n,4)
mov 24(up,n,4), %eax
ADCSBB 24(vp,n,4), %eax
mov %eax, 24(rp,n,4)
mov 28(up,n,4), %edx
ADCSBB 28(vp,n,4), %edx
mov %edx, 28(rp,n,4)
lea 8(n), n
jmp L(top)
EPILOGUE()
PROLOGUE(func_nc)
movl 20(%esp), %edx
jmp L(start)
EPILOGUE()
|
