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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
@/*
@ ** Copyright 2003-2010, VisualOn, Inc.
@ **
@ ** Licensed under the Apache License, Version 2.0 (the "License");
@ ** you may not use this file except in compliance with the License.
@ ** You may obtain a copy of the License at
@ **
@ ** http://www.apache.org/licenses/LICENSE-2.0
@ **
@ ** Unless required by applicable law or agreed to in writing, software
@ ** distributed under the License is distributed on an "AS IS" BASIS,
@ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@ ** See the License for the specific language governing permissions and
@ ** limitations under the License.
@ */
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ File: R4R8First_v5.s
@
@ Content: Radix8First and Radix4First function armv5 assemble
@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.section .text
.global Radix4First
Radix4First:
stmdb sp!, {r4 - r11, lr}
movs r10, r1
mov r11, r0
beq Radix4First_END
Radix4First_LOOP:
ldrd r0, [r11]
ldrd r2, [r11, #8]
ldrd r4, [r11, #16]
ldrd r6, [r11, #24]
add r8, r0, r2
add r9, r1, r3
sub r0, r0, r2
sub r1, r1, r3
add r2, r4, r6
add r3, r5, r7
sub r4, r4, r6
sub r5, r5, r7
add r6, r8, r2
add r7, r9, r3
sub r8, r8, r2
sub r9, r9, r3
add r2, r0, r5
sub r3, r1, r4
sub r0, r0, r5
add r1, r1, r4
strd r6, [r11]
strd r2, [r11, #8]
strd r8, [r11, #16]
strd r0, [r11, #24]
subs r10, r10, #1
add r11, r11, #32
bne Radix4First_LOOP
Radix4First_END:
ldmia sp!, {r4 - r11, pc}
@ENDP @ |Radix4First|
.section .text
.global Radix8First
Radix8First:
stmdb sp!, {r4 - r11, lr}
sub sp, sp, #0x24
mov r12, r1
mov r14, r0
cmp r12, #0
beq Radix8First_END
Radix8First_LOOP:
ldrd r0, [r14]
ldrd r2, [r14, #8]
ldrd r4, [r14, #16]
ldrd r6, [r14, #24]
add r8, r0, r2 @ r0 = buf[0] + buf[2]@
add r9, r1, r3 @ i0 = buf[1] + buf[3]@
sub r0, r0, r2 @ r1 = buf[0] - buf[2]@
sub r1, r1, r3 @ i1 = buf[1] - buf[3]@
add r2, r4, r6 @ r2 = buf[4] + buf[6]@
add r3, r5, r7 @ i2 = buf[5] + buf[7]@
sub r4, r4, r6 @ r3 = buf[4] - buf[6]@
sub r5, r5, r7 @ i3 = buf[5] - buf[7]@
add r6, r8, r2 @ r4 = (r0 + r2) >> 1@
add r7, r9, r3 @ i4 = (i0 + i2) >> 1@
sub r8, r8, r2 @ r5 = (r0 - r2) >> 1@
sub r9, r9, r3 @ i5 = (i0 - i2) >> 1@
sub r2, r0, r5 @ r6 = (r1 - i3) >> 1@
add r3, r1, r4 @ i6 = (i1 + r3) >> 1@
add r0, r0, r5 @ r7 = (r1 + i3) >> 1@
sub r1, r1, r4 @ i7 = (i1 - r3) >> 1@
mov r6, r6, asr #1 @
mov r7, r7, asr #1 @
mov r8, r8, asr #1
mov r9, r9, asr #1
mov r2, r2, asr #1
mov r3, r3, asr #1
mov r0, r0, asr #1
mov r1, r1, asr #1
str r6, [sp]
str r7, [sp, #4]
str r8, [sp, #8]
str r9, [sp, #12]
str r2, [sp, #16]
str r3, [sp, #20]
str r0, [sp, #24]
str r1, [sp, #28]
ldrd r2, [r14, #32]
ldrd r4, [r14, #40]
ldrd r6, [r14, #48]
ldrd r8, [r14, #56]
add r0, r2, r4 @ r0 = buf[ 8] + buf[10]@
add r1, r3, r5 @ i0 = buf[ 9] + buf[11]@
sub r2, r2, r4 @ r1 = buf[ 8] - buf[10]@
sub r3, r3, r5 @ i1 = buf[ 9] - buf[11]@
add r4, r6, r8 @ r2 = buf[12] + buf[14]@
add r5, r7, r9 @ i2 = buf[13] + buf[15]@
sub r6, r6, r8 @ r3 = buf[12] - buf[14]@
sub r7, r7, r9 @ i3 = buf[13] - buf[15]@
add r8, r0, r4 @ t0 = (r0 + r2)
add r9, r1, r5 @ t1 = (i0 + i2)
sub r0, r0, r4 @ t2 = (r0 - r2)
sub r1, r1, r5 @ t3 = (i0 - i2)
mov r8, r8, asr #1
ldr r4, [sp]
mov r9, r9, asr #1
ldr r5, [sp, #4]
mov r0, r0, asr #1
mov r1, r1, asr #1
add r10, r4, r8 @ buf[ 0] = r4 + t0@
add r11, r5, r9 @ buf[ 1] = i4 + t1@
sub r4, r4, r8 @ buf[ 8] = r4 - t0@
sub r5, r5, r9 @ buf[ 9] = i4 - t1@
strd r10, [r14]
strd r4, [r14, #32]
ldr r10, [sp, #8]
ldr r11, [sp, #12]
add r4, r10, r1 @ buf[ 4] = r5 + t3@
sub r5, r11, r0 @ buf[ 5] = i5 - t2@
sub r10, r10, r1 @ buf[12] = r5 - t3@
add r11, r11, r0 @ buf[13] = i5 + t2@
strd r4, [r14, #16]
strd r10, [r14, #48]
sub r0, r2, r7 @ r0 = r1 - i3@
add r1, r3, r6 @ i0 = i1 + r3@
ldr r11, DATATab
add r2, r2, r7 @ r2 = r1 + i3@
sub r3, r3, r6 @ i2 = i1 - r3@
sub r4, r0, r1 @ r0 - i0
add r5, r0, r1 @ r0 + i0
sub r0, r2, r3 @ r2 - i2
add r1, r2, r3 @ r2 + i2
smull r8, r6, r4, r11
smull r9, r7, r5, r11
ldr r2, [sp, #16]
ldr r3, [sp, #20]
smull r8, r4, r0, r11
smull r9, r5, r1, r11
ldr r10, [sp, #24]
ldr r11, [sp, #28]
sub r8, r2, r6
sub r9, r3, r7
add r2, r2, r6
add r3, r3, r7
add r6, r10, r5
sub r7, r11, r4
sub r0, r10, r5
add r1, r11, r4
strd r6, [r14, #8]
strd r8, [r14, #24]
strd r0, [r14, #40]
strd r2, [r14, #56]
subs r12, r12, #1
add r14, r14, #64
bne Radix8First_LOOP
Radix8First_END:
add sp, sp, #0x24
ldmia sp!, {r4 - r11, pc}
DATATab:
.word 0x5a82799a
@ENDP @ |Radix8First|
.end
|
