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
|
AIN DCD 0X7FFFFFFF,0X0
BIN DCD 0X7FFFFFFF,0X0
; DCD 0X1,0X3FFFFFFF,0X0,0X0
OUT FILL 4*4
LDR R0, =AIN
LDR R1, =BIN
LDR R2, =OUT
BL SMUL64X64
END
SMUL64X64 STMED R13!, {R4-R12, LR}
LDR R3, [R0]
LDR R4, [R0, #4]
MOV R5, #0
MOV R6, #0
LDR R7, [R1]
LDR R8, [R1, #4]
MOV R10, #0
MOV R11, #7
AND R9, R3, #1 ;1
CMP R9, R10
BHI SU1
BLO AD1
B CONT1
SU1 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT1
AD1 ADDS R5, R5, R7
ADC R6, R6, R8
CONT1 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
MULT AND R9, R3, #1 ;2
CMP R9, R10
BHI SU2
BLO AD2
B CONT2
SU2 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT2
AD2 ADDS R5, R5, R7
ADC R6, R6, R8
CONT2 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;3
CMP R9, R10
BHI SU3
BLO AD3
B CONT3
SU3 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT3
AD3 ADDS R5, R5, R7
ADC R6, R6, R8
CONT3 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;4
CMP R9, R10
BHI SU4
BLO AD4
B CONT4
SU4 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT4
AD4 ADDS R5, R5, R7
ADC R6, R6, R8
CONT4 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;5
CMP R9, R10
BHI SU5
BLO AD5
B CONT5
SU5 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT5
AD5 ADDS R5, R5, R7
ADC R6, R6, R8
CONT5 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;6
CMP R9, R10
BHI SU6
BLO AD6
B CONT6
SU6 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT6
AD6 ADDS R5, R5, R7
ADC R6, R6, R8
CONT6 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;7
CMP R9, R10
BHI SU7
BLO AD7
B CONT7
SU7 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT7
AD7 ADDS R5, R5, R7
ADC R6, R6, R8
CONT7 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;8
CMP R9, R10
BHI SU8
BLO AD8
B CONT8
SU8 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT8
AD8 ADDS R5, R5, R7
ADC R6, R6, R8
CONT8 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;9
CMP R9, R10
BHI SU9
BLO AD9
B CONT9
SU9 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT9
AD9 ADDS R5, R5, R7
ADC R6, R6, R8
CONT9 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
AND R9, R3, #1 ;10
CMP R9, R10
BHI SU10
BLO AD10
B CONT10
SU10 SUBS R5, R5, R7
SBC R6, R6, R8
B CONT10
AD10 ADDS R5, R5, R7
ADC R6, R6, R8
CONT10 MOVS R6, R6, ASR #1
MOVS R5, R5, RRX
MOVS R4, R4, RRX
MOVS R3, R3, RRX
MOV R10, R9
SUBS R11, R11, #1
BNE MULT
STMIA R2, {R3-R6}
LDMED R13!, {R4-R12, PC}
|