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1 | #------------------------------------------------------------------------------ |
2 | # | |
3 | # Copyright (c) 2008-2009 Apple Inc. All rights reserved. | |
4 | # | |
5 | # All rights reserved. This program and the accompanying materials | |
6 | # are licensed and made available under the terms and conditions of the BSD License | |
7 | # which accompanies this distribution. The full text of the license may be found at | |
8 | # http://opensource.org/licenses/bsd-license.php | |
9 | # | |
10 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | # | |
13 | #------------------------------------------------------------------------------ | |
14 | ||
15 | .text | |
16 | .align 2 | |
17 | .globl ___udivmoddi4 | |
18 | ___udivmoddi4: | |
19 | @ args = 8, pretend = 0, frame = 16 | |
20 | @ frame_needed = 1, uses_anonymous_args = 0 | |
21 | stmfd sp!, {r4, r5, r6, r7, lr} | |
22 | add r7, sp, #12 | |
23 | stmfd sp!, {r10, r11} | |
24 | sub sp, sp, #20 | |
25 | stmia sp, {r2-r3} | |
26 | ldr r6, [sp, #48] | |
27 | orrs r2, r2, r3 | |
28 | mov r10, r0 | |
29 | mov r11, r1 | |
30 | beq L2 | |
31 | subs ip, r1, #0 | |
32 | bne L4 | |
33 | cmp r3, #0 | |
34 | bne L6 | |
35 | cmp r6, #0 | |
36 | beq L8 | |
37 | mov r1, r2 | |
38 | bl ___umodsi3 | |
39 | mov r1, #0 | |
40 | stmia r6, {r0-r1} | |
41 | L8: | |
42 | ldr r1, [sp, #0] | |
43 | mov r0, r10 | |
44 | b L45 | |
45 | L6: | |
46 | cmp r6, #0 | |
47 | movne r1, #0 | |
48 | stmneia r6, {r0-r1} | |
49 | b L2 | |
50 | L4: | |
51 | ldr r1, [sp, #0] | |
52 | cmp r1, #0 | |
53 | bne L12 | |
54 | ldr r2, [sp, #4] | |
55 | cmp r2, #0 | |
56 | bne L14 | |
57 | cmp r6, #0 | |
58 | beq L16 | |
59 | mov r1, r2 | |
60 | mov r0, r11 | |
61 | bl ___umodsi3 | |
62 | mov r1, #0 | |
63 | stmia r6, {r0-r1} | |
64 | L16: | |
65 | ldr r1, [sp, #4] | |
66 | mov r0, r11 | |
67 | L45: | |
68 | bl ___udivsi3 | |
69 | L46: | |
70 | mov r10, r0 | |
71 | mov r11, #0 | |
72 | b L10 | |
73 | L14: | |
74 | subs r1, r0, #0 | |
75 | bne L18 | |
76 | cmp r6, #0 | |
77 | beq L16 | |
78 | ldr r1, [sp, #4] | |
79 | mov r0, r11 | |
80 | bl ___umodsi3 | |
81 | mov r4, r10 | |
82 | mov r5, r0 | |
83 | stmia r6, {r4-r5} | |
84 | b L16 | |
85 | L18: | |
86 | sub r3, r2, #1 | |
87 | tst r2, r3 | |
88 | bne L22 | |
89 | cmp r6, #0 | |
90 | movne r4, r0 | |
91 | andne r5, ip, r3 | |
92 | stmneia r6, {r4-r5} | |
93 | L24: | |
94 | rsb r3, r2, #0 | |
95 | and r3, r2, r3 | |
96 | clz r3, r3 | |
97 | rsb r3, r3, #31 | |
98 | mov r0, ip, lsr r3 | |
99 | b L46 | |
100 | L22: | |
101 | clz r2, r2 | |
102 | clz r3, ip | |
103 | rsb r3, r3, r2 | |
104 | cmp r3, #30 | |
105 | bhi L48 | |
106 | rsb r2, r3, #31 | |
107 | add lr, r3, #1 | |
108 | mov r3, r1, asl r2 | |
109 | str r3, [sp, #12] | |
110 | mov r3, r1, lsr lr | |
111 | ldr r0, [sp, #0] | |
112 | mov r5, ip, lsr lr | |
113 | orr r4, r3, ip, asl r2 | |
114 | str r0, [sp, #8] | |
115 | b L29 | |
116 | L12: | |
117 | ldr r3, [sp, #4] | |
118 | cmp r3, #0 | |
119 | bne L30 | |
120 | sub r3, r1, #1 | |
121 | tst r1, r3 | |
122 | bne L32 | |
123 | cmp r6, #0 | |
124 | andne r3, r3, r0 | |
125 | movne r2, r3 | |
126 | movne r3, #0 | |
127 | stmneia r6, {r2-r3} | |
128 | L34: | |
129 | cmp r1, #1 | |
130 | beq L10 | |
131 | rsb r3, r1, #0 | |
132 | and r3, r1, r3 | |
133 | clz r3, r3 | |
134 | rsb r0, r3, #31 | |
135 | mov r1, ip, lsr r0 | |
136 | rsb r3, r0, #32 | |
137 | mov r0, r10, lsr r0 | |
138 | orr ip, r0, ip, asl r3 | |
139 | str r1, [sp, #12] | |
140 | str ip, [sp, #8] | |
141 | ldrd r10, [sp, #8] | |
142 | b L10 | |
143 | L32: | |
144 | clz r2, r1 | |
145 | clz r3, ip | |
146 | rsb r3, r3, r2 | |
147 | rsb r4, r3, #31 | |
148 | mov r2, r0, asl r4 | |
149 | mvn r1, r3 | |
150 | and r2, r2, r1, asr #31 | |
151 | add lr, r3, #33 | |
152 | str r2, [sp, #8] | |
153 | add r2, r3, #1 | |
154 | mov r3, r3, asr #31 | |
155 | and r0, r3, r0, asl r1 | |
156 | mov r3, r10, lsr r2 | |
157 | orr r3, r3, ip, asl r4 | |
158 | and r3, r3, r1, asr #31 | |
159 | orr r0, r0, r3 | |
160 | mov r3, ip, lsr lr | |
161 | str r0, [sp, #12] | |
162 | mov r0, r10, lsr lr | |
163 | and r5, r3, r2, asr #31 | |
164 | rsb r3, lr, #31 | |
165 | mov r3, r3, asr #31 | |
166 | orr r0, r0, ip, asl r1 | |
167 | and r3, r3, ip, lsr r2 | |
168 | and r0, r0, r2, asr #31 | |
169 | orr r4, r3, r0 | |
170 | b L29 | |
171 | L30: | |
172 | clz r2, r3 | |
173 | clz r3, ip | |
174 | rsb r3, r3, r2 | |
175 | cmp r3, #31 | |
176 | bls L37 | |
177 | L48: | |
178 | cmp r6, #0 | |
179 | stmneia r6, {r10-r11} | |
180 | b L2 | |
181 | L37: | |
182 | rsb r1, r3, #31 | |
183 | mov r0, r0, asl r1 | |
184 | add lr, r3, #1 | |
185 | mov r2, #0 | |
186 | str r0, [sp, #12] | |
187 | mov r0, r10, lsr lr | |
188 | str r2, [sp, #8] | |
189 | sub r2, r3, #31 | |
190 | and r0, r0, r2, asr #31 | |
191 | mov r3, ip, lsr lr | |
192 | orr r4, r0, ip, asl r1 | |
193 | and r5, r3, r2, asr #31 | |
194 | L29: | |
195 | mov ip, #0 | |
196 | mov r10, ip | |
197 | b L40 | |
198 | L41: | |
199 | ldr r1, [sp, #12] | |
200 | ldr r2, [sp, #8] | |
201 | mov r3, r4, lsr #31 | |
202 | orr r5, r3, r5, asl #1 | |
203 | mov r3, r1, lsr #31 | |
204 | orr r4, r3, r4, asl #1 | |
205 | mov r3, r2, lsr #31 | |
206 | orr r0, r3, r1, asl #1 | |
207 | orr r1, ip, r2, asl #1 | |
208 | ldmia sp, {r2-r3} | |
209 | str r0, [sp, #12] | |
210 | subs r2, r2, r4 | |
211 | sbc r3, r3, r5 | |
212 | str r1, [sp, #8] | |
213 | subs r0, r2, #1 | |
214 | sbc r1, r3, #0 | |
215 | mov r2, r1, asr #31 | |
216 | ldmia sp, {r0-r1} | |
217 | mov r3, r2 | |
218 | and ip, r2, #1 | |
219 | and r3, r3, r1 | |
220 | and r2, r2, r0 | |
221 | subs r4, r4, r2 | |
222 | sbc r5, r5, r3 | |
223 | add r10, r10, #1 | |
224 | L40: | |
225 | cmp r10, lr | |
226 | bne L41 | |
227 | ldrd r0, [sp, #8] | |
228 | adds r0, r0, r0 | |
229 | adc r1, r1, r1 | |
230 | cmp r6, #0 | |
231 | orr r10, r0, ip | |
232 | mov r11, r1 | |
233 | stmneia r6, {r4-r5} | |
234 | b L10 | |
235 | L2: | |
236 | mov r10, #0 | |
237 | mov r11, #0 | |
238 | L10: | |
239 | mov r0, r10 | |
240 | mov r1, r11 | |
241 | sub sp, r7, #20 | |
242 | ldmfd sp!, {r10, r11} | |
243 | ldmfd sp!, {r4, r5, r6, r7, pc} |