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divsi3.S (245548) divsi3.S (248367)
1/* $NetBSD: divsi3.S,v 1.4 2003/04/05 23:27:15 bjh21 Exp $ */
2
3/*-
4 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
5 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
6 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
7 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
8 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
9 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
10 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
11 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
12 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
13 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
14 * SUCH DAMAGE.
15 */
16
17#include <machine/asm.h>
1/* $NetBSD: divsi3.S,v 1.4 2003/04/05 23:27:15 bjh21 Exp $ */
2
3/*-
4 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
5 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
6 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
7 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
8 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
9 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
10 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
11 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
12 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
13 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
14 * SUCH DAMAGE.
15 */
16
17#include <machine/asm.h>
18__FBSDID("$FreeBSD: head/sys/libkern/arm/divsi3.S 245548 2013-01-17 09:37:42Z andrew $");
18__FBSDID("$FreeBSD: head/sys/libkern/arm/divsi3.S 248367 2013-03-16 04:08:01Z andrew $");
19
20/*
21 * stack is aligned as there's a possibility of branching to L_overflow
22 * which makes a C call
23 */
24
25ENTRY_NP(__umodsi3)
26 stmfd sp!, {lr}
27 sub sp, sp, #4 /* align stack */
28 bl .L_udivide
29 add sp, sp, #4 /* unalign stack */
30 mov r0, r1
31 ldmfd sp!, {pc}
19
20/*
21 * stack is aligned as there's a possibility of branching to L_overflow
22 * which makes a C call
23 */
24
25ENTRY_NP(__umodsi3)
26 stmfd sp!, {lr}
27 sub sp, sp, #4 /* align stack */
28 bl .L_udivide
29 add sp, sp, #4 /* unalign stack */
30 mov r0, r1
31 ldmfd sp!, {pc}
32END(__umodsi3)
32
33ENTRY_NP(__modsi3)
34 stmfd sp!, {lr}
35 sub sp, sp, #4 /* align stack */
36 bl .L_divide
37 add sp, sp, #4 /* unalign stack */
38 mov r0, r1
39 ldmfd sp!, {pc}
40
41.L_overflow:
42#if !defined(_KERNEL) && !defined(_STANDALONE)
43 mov r0, #8 /* SIGFPE */
44 bl PIC_SYM(_C_LABEL(raise), PLT) /* raise it */
45 mov r0, #0
46#else
47 /* XXX should cause a fatal error */
48 mvn r0, #0
49#endif
50 RET
33
34ENTRY_NP(__modsi3)
35 stmfd sp!, {lr}
36 sub sp, sp, #4 /* align stack */
37 bl .L_divide
38 add sp, sp, #4 /* unalign stack */
39 mov r0, r1
40 ldmfd sp!, {pc}
41
42.L_overflow:
43#if !defined(_KERNEL) && !defined(_STANDALONE)
44 mov r0, #8 /* SIGFPE */
45 bl PIC_SYM(_C_LABEL(raise), PLT) /* raise it */
46 mov r0, #0
47#else
48 /* XXX should cause a fatal error */
49 mvn r0, #0
50#endif
51 RET
52END(__modsi3)
51
52#ifdef __ARM_EABI__
53ENTRY_NP(__aeabi_uidiv)
54ENTRY_NP(__aeabi_uidivmod)
55#endif
56ENTRY_NP(__udivsi3)
57.L_udivide: /* r0 = r0 / r1; r1 = r0 % r1 */
58 eor r0, r1, r0
59 eor r1, r0, r1
60 eor r0, r1, r0
61 /* r0 = r1 / r0; r1 = r1 % r0 */
62 cmp r0, #1
63 bcc .L_overflow
64 beq .L_divide_l0
65 mov ip, #0
66 movs r1, r1
67 bpl .L_divide_l1
68 orr ip, ip, #0x20000000 /* ip bit 0x20000000 = -ve r1 */
69 movs r1, r1, lsr #1
70 orrcs ip, ip, #0x10000000 /* ip bit 0x10000000 = bit 0 of r1 */
71 b .L_divide_l1
72
73.L_divide_l0: /* r0 == 1 */
74 mov r0, r1
75 mov r1, #0
76 RET
53
54#ifdef __ARM_EABI__
55ENTRY_NP(__aeabi_uidiv)
56ENTRY_NP(__aeabi_uidivmod)
57#endif
58ENTRY_NP(__udivsi3)
59.L_udivide: /* r0 = r0 / r1; r1 = r0 % r1 */
60 eor r0, r1, r0
61 eor r1, r0, r1
62 eor r0, r1, r0
63 /* r0 = r1 / r0; r1 = r1 % r0 */
64 cmp r0, #1
65 bcc .L_overflow
66 beq .L_divide_l0
67 mov ip, #0
68 movs r1, r1
69 bpl .L_divide_l1
70 orr ip, ip, #0x20000000 /* ip bit 0x20000000 = -ve r1 */
71 movs r1, r1, lsr #1
72 orrcs ip, ip, #0x10000000 /* ip bit 0x10000000 = bit 0 of r1 */
73 b .L_divide_l1
74
75.L_divide_l0: /* r0 == 1 */
76 mov r0, r1
77 mov r1, #0
78 RET
79#ifdef __ARM_EABI__
80END(__aeabi_uidiv)
81END(__aeabi_uidivmod)
82#endif
83END(__udivsi3)
77
78#ifdef __ARM_EABI__
79ENTRY_NP(__aeabi_idiv)
80ENTRY_NP(__aeabi_idivmod)
81#endif
82ENTRY_NP(__divsi3)
83.L_divide: /* r0 = r0 / r1; r1 = r0 % r1 */
84 eor r0, r1, r0
85 eor r1, r0, r1
86 eor r0, r1, r0
87 /* r0 = r1 / r0; r1 = r1 % r0 */
88 cmp r0, #1
89 bcc .L_overflow
90 beq .L_divide_l0
91 ands ip, r0, #0x80000000
92 rsbmi r0, r0, #0
93 ands r2, r1, #0x80000000
94 eor ip, ip, r2
95 rsbmi r1, r1, #0
96 orr ip, r2, ip, lsr #1 /* ip bit 0x40000000 = -ve division */
97 /* ip bit 0x80000000 = -ve remainder */
98
99.L_divide_l1:
100 mov r2, #1
101 mov r3, #0
102
103 /*
104 * If the highest bit of the dividend is set, we have to be
105 * careful when shifting the divisor. Test this.
106 */
107 movs r1,r1
108 bpl .L_old_code
109
110 /*
111 * At this point, the highest bit of r1 is known to be set.
112 * We abuse this below in the tst instructions.
113 */
114 tst r1, r0 /*, lsl #0 */
115 bmi .L_divide_b1
116 tst r1, r0, lsl #1
117 bmi .L_divide_b2
118 tst r1, r0, lsl #2
119 bmi .L_divide_b3
120 tst r1, r0, lsl #3
121 bmi .L_divide_b4
122 tst r1, r0, lsl #4
123 bmi .L_divide_b5
124 tst r1, r0, lsl #5
125 bmi .L_divide_b6
126 tst r1, r0, lsl #6
127 bmi .L_divide_b7
128 tst r1, r0, lsl #7
129 bmi .L_divide_b8
130 tst r1, r0, lsl #8
131 bmi .L_divide_b9
132 tst r1, r0, lsl #9
133 bmi .L_divide_b10
134 tst r1, r0, lsl #10
135 bmi .L_divide_b11
136 tst r1, r0, lsl #11
137 bmi .L_divide_b12
138 tst r1, r0, lsl #12
139 bmi .L_divide_b13
140 tst r1, r0, lsl #13
141 bmi .L_divide_b14
142 tst r1, r0, lsl #14
143 bmi .L_divide_b15
144 tst r1, r0, lsl #15
145 bmi .L_divide_b16
146 tst r1, r0, lsl #16
147 bmi .L_divide_b17
148 tst r1, r0, lsl #17
149 bmi .L_divide_b18
150 tst r1, r0, lsl #18
151 bmi .L_divide_b19
152 tst r1, r0, lsl #19
153 bmi .L_divide_b20
154 tst r1, r0, lsl #20
155 bmi .L_divide_b21
156 tst r1, r0, lsl #21
157 bmi .L_divide_b22
158 tst r1, r0, lsl #22
159 bmi .L_divide_b23
160 tst r1, r0, lsl #23
161 bmi .L_divide_b24
162 tst r1, r0, lsl #24
163 bmi .L_divide_b25
164 tst r1, r0, lsl #25
165 bmi .L_divide_b26
166 tst r1, r0, lsl #26
167 bmi .L_divide_b27
168 tst r1, r0, lsl #27
169 bmi .L_divide_b28
170 tst r1, r0, lsl #28
171 bmi .L_divide_b29
172 tst r1, r0, lsl #29
173 bmi .L_divide_b30
174 tst r1, r0, lsl #30
175 bmi .L_divide_b31
176/*
177 * instead of:
178 * tst r1, r0, lsl #31
179 * bmi .L_divide_b32
180 */
181 b .L_divide_b32
182
183.L_old_code:
184 cmp r1, r0
185 bcc .L_divide_b0
186 cmp r1, r0, lsl #1
187 bcc .L_divide_b1
188 cmp r1, r0, lsl #2
189 bcc .L_divide_b2
190 cmp r1, r0, lsl #3
191 bcc .L_divide_b3
192 cmp r1, r0, lsl #4
193 bcc .L_divide_b4
194 cmp r1, r0, lsl #5
195 bcc .L_divide_b5
196 cmp r1, r0, lsl #6
197 bcc .L_divide_b6
198 cmp r1, r0, lsl #7
199 bcc .L_divide_b7
200 cmp r1, r0, lsl #8
201 bcc .L_divide_b8
202 cmp r1, r0, lsl #9
203 bcc .L_divide_b9
204 cmp r1, r0, lsl #10
205 bcc .L_divide_b10
206 cmp r1, r0, lsl #11
207 bcc .L_divide_b11
208 cmp r1, r0, lsl #12
209 bcc .L_divide_b12
210 cmp r1, r0, lsl #13
211 bcc .L_divide_b13
212 cmp r1, r0, lsl #14
213 bcc .L_divide_b14
214 cmp r1, r0, lsl #15
215 bcc .L_divide_b15
216 cmp r1, r0, lsl #16
217 bcc .L_divide_b16
218 cmp r1, r0, lsl #17
219 bcc .L_divide_b17
220 cmp r1, r0, lsl #18
221 bcc .L_divide_b18
222 cmp r1, r0, lsl #19
223 bcc .L_divide_b19
224 cmp r1, r0, lsl #20
225 bcc .L_divide_b20
226 cmp r1, r0, lsl #21
227 bcc .L_divide_b21
228 cmp r1, r0, lsl #22
229 bcc .L_divide_b22
230 cmp r1, r0, lsl #23
231 bcc .L_divide_b23
232 cmp r1, r0, lsl #24
233 bcc .L_divide_b24
234 cmp r1, r0, lsl #25
235 bcc .L_divide_b25
236 cmp r1, r0, lsl #26
237 bcc .L_divide_b26
238 cmp r1, r0, lsl #27
239 bcc .L_divide_b27
240 cmp r1, r0, lsl #28
241 bcc .L_divide_b28
242 cmp r1, r0, lsl #29
243 bcc .L_divide_b29
244 cmp r1, r0, lsl #30
245 bcc .L_divide_b30
246.L_divide_b32:
247 cmp r1, r0, lsl #31
248 subhs r1, r1,r0, lsl #31
249 addhs r3, r3,r2, lsl #31
250.L_divide_b31:
251 cmp r1, r0, lsl #30
252 subhs r1, r1,r0, lsl #30
253 addhs r3, r3,r2, lsl #30
254.L_divide_b30:
255 cmp r1, r0, lsl #29
256 subhs r1, r1,r0, lsl #29
257 addhs r3, r3,r2, lsl #29
258.L_divide_b29:
259 cmp r1, r0, lsl #28
260 subhs r1, r1,r0, lsl #28
261 addhs r3, r3,r2, lsl #28
262.L_divide_b28:
263 cmp r1, r0, lsl #27
264 subhs r1, r1,r0, lsl #27
265 addhs r3, r3,r2, lsl #27
266.L_divide_b27:
267 cmp r1, r0, lsl #26
268 subhs r1, r1,r0, lsl #26
269 addhs r3, r3,r2, lsl #26
270.L_divide_b26:
271 cmp r1, r0, lsl #25
272 subhs r1, r1,r0, lsl #25
273 addhs r3, r3,r2, lsl #25
274.L_divide_b25:
275 cmp r1, r0, lsl #24
276 subhs r1, r1,r0, lsl #24
277 addhs r3, r3,r2, lsl #24
278.L_divide_b24:
279 cmp r1, r0, lsl #23
280 subhs r1, r1,r0, lsl #23
281 addhs r3, r3,r2, lsl #23
282.L_divide_b23:
283 cmp r1, r0, lsl #22
284 subhs r1, r1,r0, lsl #22
285 addhs r3, r3,r2, lsl #22
286.L_divide_b22:
287 cmp r1, r0, lsl #21
288 subhs r1, r1,r0, lsl #21
289 addhs r3, r3,r2, lsl #21
290.L_divide_b21:
291 cmp r1, r0, lsl #20
292 subhs r1, r1,r0, lsl #20
293 addhs r3, r3,r2, lsl #20
294.L_divide_b20:
295 cmp r1, r0, lsl #19
296 subhs r1, r1,r0, lsl #19
297 addhs r3, r3,r2, lsl #19
298.L_divide_b19:
299 cmp r1, r0, lsl #18
300 subhs r1, r1,r0, lsl #18
301 addhs r3, r3,r2, lsl #18
302.L_divide_b18:
303 cmp r1, r0, lsl #17
304 subhs r1, r1,r0, lsl #17
305 addhs r3, r3,r2, lsl #17
306.L_divide_b17:
307 cmp r1, r0, lsl #16
308 subhs r1, r1,r0, lsl #16
309 addhs r3, r3,r2, lsl #16
310.L_divide_b16:
311 cmp r1, r0, lsl #15
312 subhs r1, r1,r0, lsl #15
313 addhs r3, r3,r2, lsl #15
314.L_divide_b15:
315 cmp r1, r0, lsl #14
316 subhs r1, r1,r0, lsl #14
317 addhs r3, r3,r2, lsl #14
318.L_divide_b14:
319 cmp r1, r0, lsl #13
320 subhs r1, r1,r0, lsl #13
321 addhs r3, r3,r2, lsl #13
322.L_divide_b13:
323 cmp r1, r0, lsl #12
324 subhs r1, r1,r0, lsl #12
325 addhs r3, r3,r2, lsl #12
326.L_divide_b12:
327 cmp r1, r0, lsl #11
328 subhs r1, r1,r0, lsl #11
329 addhs r3, r3,r2, lsl #11
330.L_divide_b11:
331 cmp r1, r0, lsl #10
332 subhs r1, r1,r0, lsl #10
333 addhs r3, r3,r2, lsl #10
334.L_divide_b10:
335 cmp r1, r0, lsl #9
336 subhs r1, r1,r0, lsl #9
337 addhs r3, r3,r2, lsl #9
338.L_divide_b9:
339 cmp r1, r0, lsl #8
340 subhs r1, r1,r0, lsl #8
341 addhs r3, r3,r2, lsl #8
342.L_divide_b8:
343 cmp r1, r0, lsl #7
344 subhs r1, r1,r0, lsl #7
345 addhs r3, r3,r2, lsl #7
346.L_divide_b7:
347 cmp r1, r0, lsl #6
348 subhs r1, r1,r0, lsl #6
349 addhs r3, r3,r2, lsl #6
350.L_divide_b6:
351 cmp r1, r0, lsl #5
352 subhs r1, r1,r0, lsl #5
353 addhs r3, r3,r2, lsl #5
354.L_divide_b5:
355 cmp r1, r0, lsl #4
356 subhs r1, r1,r0, lsl #4
357 addhs r3, r3,r2, lsl #4
358.L_divide_b4:
359 cmp r1, r0, lsl #3
360 subhs r1, r1,r0, lsl #3
361 addhs r3, r3,r2, lsl #3
362.L_divide_b3:
363 cmp r1, r0, lsl #2
364 subhs r1, r1,r0, lsl #2
365 addhs r3, r3,r2, lsl #2
366.L_divide_b2:
367 cmp r1, r0, lsl #1
368 subhs r1, r1,r0, lsl #1
369 addhs r3, r3,r2, lsl #1
370.L_divide_b1:
371 cmp r1, r0
372 subhs r1, r1, r0
373 addhs r3, r3, r2
374.L_divide_b0:
375
376 tst ip, #0x20000000
377 bne .L_udivide_l1
378 mov r0, r3
379 cmp ip, #0
380 rsbmi r1, r1, #0
381 movs ip, ip, lsl #1
382 bicmi r0, r0, #0x80000000 /* Fix incase we divided 0x80000000 */
383 rsbmi r0, r0, #0
384 RET
385
386.L_udivide_l1:
387 tst ip, #0x10000000
388 mov r1, r1, lsl #1
389 orrne r1, r1, #1
390 mov r3, r3, lsl #1
391 cmp r1, r0
392 subhs r1, r1, r0
393 addhs r3, r3, r2
394 mov r0, r3
395 RET
84
85#ifdef __ARM_EABI__
86ENTRY_NP(__aeabi_idiv)
87ENTRY_NP(__aeabi_idivmod)
88#endif
89ENTRY_NP(__divsi3)
90.L_divide: /* r0 = r0 / r1; r1 = r0 % r1 */
91 eor r0, r1, r0
92 eor r1, r0, r1
93 eor r0, r1, r0
94 /* r0 = r1 / r0; r1 = r1 % r0 */
95 cmp r0, #1
96 bcc .L_overflow
97 beq .L_divide_l0
98 ands ip, r0, #0x80000000
99 rsbmi r0, r0, #0
100 ands r2, r1, #0x80000000
101 eor ip, ip, r2
102 rsbmi r1, r1, #0
103 orr ip, r2, ip, lsr #1 /* ip bit 0x40000000 = -ve division */
104 /* ip bit 0x80000000 = -ve remainder */
105
106.L_divide_l1:
107 mov r2, #1
108 mov r3, #0
109
110 /*
111 * If the highest bit of the dividend is set, we have to be
112 * careful when shifting the divisor. Test this.
113 */
114 movs r1,r1
115 bpl .L_old_code
116
117 /*
118 * At this point, the highest bit of r1 is known to be set.
119 * We abuse this below in the tst instructions.
120 */
121 tst r1, r0 /*, lsl #0 */
122 bmi .L_divide_b1
123 tst r1, r0, lsl #1
124 bmi .L_divide_b2
125 tst r1, r0, lsl #2
126 bmi .L_divide_b3
127 tst r1, r0, lsl #3
128 bmi .L_divide_b4
129 tst r1, r0, lsl #4
130 bmi .L_divide_b5
131 tst r1, r0, lsl #5
132 bmi .L_divide_b6
133 tst r1, r0, lsl #6
134 bmi .L_divide_b7
135 tst r1, r0, lsl #7
136 bmi .L_divide_b8
137 tst r1, r0, lsl #8
138 bmi .L_divide_b9
139 tst r1, r0, lsl #9
140 bmi .L_divide_b10
141 tst r1, r0, lsl #10
142 bmi .L_divide_b11
143 tst r1, r0, lsl #11
144 bmi .L_divide_b12
145 tst r1, r0, lsl #12
146 bmi .L_divide_b13
147 tst r1, r0, lsl #13
148 bmi .L_divide_b14
149 tst r1, r0, lsl #14
150 bmi .L_divide_b15
151 tst r1, r0, lsl #15
152 bmi .L_divide_b16
153 tst r1, r0, lsl #16
154 bmi .L_divide_b17
155 tst r1, r0, lsl #17
156 bmi .L_divide_b18
157 tst r1, r0, lsl #18
158 bmi .L_divide_b19
159 tst r1, r0, lsl #19
160 bmi .L_divide_b20
161 tst r1, r0, lsl #20
162 bmi .L_divide_b21
163 tst r1, r0, lsl #21
164 bmi .L_divide_b22
165 tst r1, r0, lsl #22
166 bmi .L_divide_b23
167 tst r1, r0, lsl #23
168 bmi .L_divide_b24
169 tst r1, r0, lsl #24
170 bmi .L_divide_b25
171 tst r1, r0, lsl #25
172 bmi .L_divide_b26
173 tst r1, r0, lsl #26
174 bmi .L_divide_b27
175 tst r1, r0, lsl #27
176 bmi .L_divide_b28
177 tst r1, r0, lsl #28
178 bmi .L_divide_b29
179 tst r1, r0, lsl #29
180 bmi .L_divide_b30
181 tst r1, r0, lsl #30
182 bmi .L_divide_b31
183/*
184 * instead of:
185 * tst r1, r0, lsl #31
186 * bmi .L_divide_b32
187 */
188 b .L_divide_b32
189
190.L_old_code:
191 cmp r1, r0
192 bcc .L_divide_b0
193 cmp r1, r0, lsl #1
194 bcc .L_divide_b1
195 cmp r1, r0, lsl #2
196 bcc .L_divide_b2
197 cmp r1, r0, lsl #3
198 bcc .L_divide_b3
199 cmp r1, r0, lsl #4
200 bcc .L_divide_b4
201 cmp r1, r0, lsl #5
202 bcc .L_divide_b5
203 cmp r1, r0, lsl #6
204 bcc .L_divide_b6
205 cmp r1, r0, lsl #7
206 bcc .L_divide_b7
207 cmp r1, r0, lsl #8
208 bcc .L_divide_b8
209 cmp r1, r0, lsl #9
210 bcc .L_divide_b9
211 cmp r1, r0, lsl #10
212 bcc .L_divide_b10
213 cmp r1, r0, lsl #11
214 bcc .L_divide_b11
215 cmp r1, r0, lsl #12
216 bcc .L_divide_b12
217 cmp r1, r0, lsl #13
218 bcc .L_divide_b13
219 cmp r1, r0, lsl #14
220 bcc .L_divide_b14
221 cmp r1, r0, lsl #15
222 bcc .L_divide_b15
223 cmp r1, r0, lsl #16
224 bcc .L_divide_b16
225 cmp r1, r0, lsl #17
226 bcc .L_divide_b17
227 cmp r1, r0, lsl #18
228 bcc .L_divide_b18
229 cmp r1, r0, lsl #19
230 bcc .L_divide_b19
231 cmp r1, r0, lsl #20
232 bcc .L_divide_b20
233 cmp r1, r0, lsl #21
234 bcc .L_divide_b21
235 cmp r1, r0, lsl #22
236 bcc .L_divide_b22
237 cmp r1, r0, lsl #23
238 bcc .L_divide_b23
239 cmp r1, r0, lsl #24
240 bcc .L_divide_b24
241 cmp r1, r0, lsl #25
242 bcc .L_divide_b25
243 cmp r1, r0, lsl #26
244 bcc .L_divide_b26
245 cmp r1, r0, lsl #27
246 bcc .L_divide_b27
247 cmp r1, r0, lsl #28
248 bcc .L_divide_b28
249 cmp r1, r0, lsl #29
250 bcc .L_divide_b29
251 cmp r1, r0, lsl #30
252 bcc .L_divide_b30
253.L_divide_b32:
254 cmp r1, r0, lsl #31
255 subhs r1, r1,r0, lsl #31
256 addhs r3, r3,r2, lsl #31
257.L_divide_b31:
258 cmp r1, r0, lsl #30
259 subhs r1, r1,r0, lsl #30
260 addhs r3, r3,r2, lsl #30
261.L_divide_b30:
262 cmp r1, r0, lsl #29
263 subhs r1, r1,r0, lsl #29
264 addhs r3, r3,r2, lsl #29
265.L_divide_b29:
266 cmp r1, r0, lsl #28
267 subhs r1, r1,r0, lsl #28
268 addhs r3, r3,r2, lsl #28
269.L_divide_b28:
270 cmp r1, r0, lsl #27
271 subhs r1, r1,r0, lsl #27
272 addhs r3, r3,r2, lsl #27
273.L_divide_b27:
274 cmp r1, r0, lsl #26
275 subhs r1, r1,r0, lsl #26
276 addhs r3, r3,r2, lsl #26
277.L_divide_b26:
278 cmp r1, r0, lsl #25
279 subhs r1, r1,r0, lsl #25
280 addhs r3, r3,r2, lsl #25
281.L_divide_b25:
282 cmp r1, r0, lsl #24
283 subhs r1, r1,r0, lsl #24
284 addhs r3, r3,r2, lsl #24
285.L_divide_b24:
286 cmp r1, r0, lsl #23
287 subhs r1, r1,r0, lsl #23
288 addhs r3, r3,r2, lsl #23
289.L_divide_b23:
290 cmp r1, r0, lsl #22
291 subhs r1, r1,r0, lsl #22
292 addhs r3, r3,r2, lsl #22
293.L_divide_b22:
294 cmp r1, r0, lsl #21
295 subhs r1, r1,r0, lsl #21
296 addhs r3, r3,r2, lsl #21
297.L_divide_b21:
298 cmp r1, r0, lsl #20
299 subhs r1, r1,r0, lsl #20
300 addhs r3, r3,r2, lsl #20
301.L_divide_b20:
302 cmp r1, r0, lsl #19
303 subhs r1, r1,r0, lsl #19
304 addhs r3, r3,r2, lsl #19
305.L_divide_b19:
306 cmp r1, r0, lsl #18
307 subhs r1, r1,r0, lsl #18
308 addhs r3, r3,r2, lsl #18
309.L_divide_b18:
310 cmp r1, r0, lsl #17
311 subhs r1, r1,r0, lsl #17
312 addhs r3, r3,r2, lsl #17
313.L_divide_b17:
314 cmp r1, r0, lsl #16
315 subhs r1, r1,r0, lsl #16
316 addhs r3, r3,r2, lsl #16
317.L_divide_b16:
318 cmp r1, r0, lsl #15
319 subhs r1, r1,r0, lsl #15
320 addhs r3, r3,r2, lsl #15
321.L_divide_b15:
322 cmp r1, r0, lsl #14
323 subhs r1, r1,r0, lsl #14
324 addhs r3, r3,r2, lsl #14
325.L_divide_b14:
326 cmp r1, r0, lsl #13
327 subhs r1, r1,r0, lsl #13
328 addhs r3, r3,r2, lsl #13
329.L_divide_b13:
330 cmp r1, r0, lsl #12
331 subhs r1, r1,r0, lsl #12
332 addhs r3, r3,r2, lsl #12
333.L_divide_b12:
334 cmp r1, r0, lsl #11
335 subhs r1, r1,r0, lsl #11
336 addhs r3, r3,r2, lsl #11
337.L_divide_b11:
338 cmp r1, r0, lsl #10
339 subhs r1, r1,r0, lsl #10
340 addhs r3, r3,r2, lsl #10
341.L_divide_b10:
342 cmp r1, r0, lsl #9
343 subhs r1, r1,r0, lsl #9
344 addhs r3, r3,r2, lsl #9
345.L_divide_b9:
346 cmp r1, r0, lsl #8
347 subhs r1, r1,r0, lsl #8
348 addhs r3, r3,r2, lsl #8
349.L_divide_b8:
350 cmp r1, r0, lsl #7
351 subhs r1, r1,r0, lsl #7
352 addhs r3, r3,r2, lsl #7
353.L_divide_b7:
354 cmp r1, r0, lsl #6
355 subhs r1, r1,r0, lsl #6
356 addhs r3, r3,r2, lsl #6
357.L_divide_b6:
358 cmp r1, r0, lsl #5
359 subhs r1, r1,r0, lsl #5
360 addhs r3, r3,r2, lsl #5
361.L_divide_b5:
362 cmp r1, r0, lsl #4
363 subhs r1, r1,r0, lsl #4
364 addhs r3, r3,r2, lsl #4
365.L_divide_b4:
366 cmp r1, r0, lsl #3
367 subhs r1, r1,r0, lsl #3
368 addhs r3, r3,r2, lsl #3
369.L_divide_b3:
370 cmp r1, r0, lsl #2
371 subhs r1, r1,r0, lsl #2
372 addhs r3, r3,r2, lsl #2
373.L_divide_b2:
374 cmp r1, r0, lsl #1
375 subhs r1, r1,r0, lsl #1
376 addhs r3, r3,r2, lsl #1
377.L_divide_b1:
378 cmp r1, r0
379 subhs r1, r1, r0
380 addhs r3, r3, r2
381.L_divide_b0:
382
383 tst ip, #0x20000000
384 bne .L_udivide_l1
385 mov r0, r3
386 cmp ip, #0
387 rsbmi r1, r1, #0
388 movs ip, ip, lsl #1
389 bicmi r0, r0, #0x80000000 /* Fix incase we divided 0x80000000 */
390 rsbmi r0, r0, #0
391 RET
392
393.L_udivide_l1:
394 tst ip, #0x10000000
395 mov r1, r1, lsl #1
396 orrne r1, r1, #1
397 mov r3, r3, lsl #1
398 cmp r1, r0
399 subhs r1, r1, r0
400 addhs r3, r3, r2
401 mov r0, r3
402 RET
403#ifdef __ARM_EABI__
404END(__aeabi_idiv)
405END(__aeabi_idivmod)
406#endif
407END(__divsi3)
408