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
|
! sparc __mpn_add_n -- Add two limb vectors of the same length > 0 and store
! sum in a third limb vector.
! Copyright (C) 1992, 1994 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 Library General Public License as published by
! the Free Software Foundation; either version 2 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 Library General Public
! License for more details.
! You should have received a copy of the GNU Library General Public License
! along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
! INPUT PARAMETERS
! res_ptr %o0
! s1_ptr %o1
! s2_ptr %o2
! size %o3
#include "sysdep.h"
.text
.align 4
.global C_SYMBOL_NAME(__mpn_add_n)
C_SYMBOL_NAME(__mpn_add_n):
ld [%o1+0],%o4 ! read first limb from s1_ptr
srl %o3,4,%g1
ld [%o2+0],%o5 ! read first limb from s2_ptr
sub %g0,%o3,%o3
andcc %o3,(16-1),%o3
be Lzero
nop
sll %o3,2,%o3 ! multiply by 4
sub %o0,%o3,%o0 ! adjust res_ptr
sub %o1,%o3,%o1 ! adjust s1_ptr
sub %o2,%o3,%o2 ! adjust s2_ptr
mov %o4,%g2
sethi %hi(Lbase),%g3
or %g3,%lo(Lbase),%g3
sll %o3,2,%o3 ! multiply by 4
jmp %g3+%o3
mov %o5,%g3
Loop: addxcc %g2,%g3,%o3
add %o1,64,%o1
st %o3,[%o0+60]
add %o2,64,%o2
ld [%o1+0],%o4
add %o0,64,%o0
ld [%o2+0],%o5
Lzero: sub %g1,1,%g1 ! add 0 + 16r limbs (adjust loop counter)
Lbase: ld [%o1+4],%g2
addxcc %o4,%o5,%o3
ld [%o2+4],%g3
st %o3,[%o0+0]
ld [%o1+8],%o4 ! add 15 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+8],%o5
st %o3,[%o0+4]
ld [%o1+12],%g2 ! add 14 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+12],%g3
st %o3,[%o0+8]
ld [%o1+16],%o4 ! add 13 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+16],%o5
st %o3,[%o0+12]
ld [%o1+20],%g2 ! add 12 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+20],%g3
st %o3,[%o0+16]
ld [%o1+24],%o4 ! add 11 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+24],%o5
st %o3,[%o0+20]
ld [%o1+28],%g2 ! add 10 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+28],%g3
st %o3,[%o0+24]
ld [%o1+32],%o4 ! add 9 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+32],%o5
st %o3,[%o0+28]
ld [%o1+36],%g2 ! add 8 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+36],%g3
st %o3,[%o0+32]
ld [%o1+40],%o4 ! add 7 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+40],%o5
st %o3,[%o0+36]
ld [%o1+44],%g2 ! add 6 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+44],%g3
st %o3,[%o0+40]
ld [%o1+48],%o4 ! add 5 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+48],%o5
st %o3,[%o0+44]
ld [%o1+52],%g2 ! add 4 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+52],%g3
st %o3,[%o0+48]
ld [%o1+56],%o4 ! add 3 + 16r limbs
addxcc %g2,%g3,%o3
ld [%o2+56],%o5
st %o3,[%o0+52]
ld [%o1+60],%g2 ! add 2 + 16r limbs
addxcc %o4,%o5,%o3
ld [%o2+60],%g3
st %o3,[%o0+56]
addx %g0,%g0,%o4
tst %g1
bne Loop
subcc %g0,%o4,%g0 ! restore cy (delay slot)
addxcc %g2,%g3,%o3
st %o3,[%o0+60] ! store most significant limb
retl
addx %g0,%g0,%o0 ! return carry-out from most sign. limb
|
