Deleted Added
sdiff udiff text old ( 139815 ) new ( 245548 )
full compact
divsi3.S (139815) divsi3.S (245548)
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 139815 2005-01-07 00:24:33Z imp $");
18__FBSDID("$FreeBSD: head/sys/libkern/arm/divsi3.S 245548 2013-01-17 09:37:42Z 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}
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
51
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}
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
51
52#ifdef __ARM_EABI__
53ENTRY_NP(__aeabi_uidiv)
54ENTRY_NP(__aeabi_uidivmod)
55#endif
52ENTRY_NP(__udivsi3)
53.L_udivide: /* r0 = r0 / r1; r1 = r0 % r1 */
54 eor r0, r1, r0
55 eor r1, r0, r1
56 eor r0, r1, r0
57 /* r0 = r1 / r0; r1 = r1 % r0 */
58 cmp r0, #1
59 bcc .L_overflow
60 beq .L_divide_l0
61 mov ip, #0
62 movs r1, r1
63 bpl .L_divide_l1
64 orr ip, ip, #0x20000000 /* ip bit 0x20000000 = -ve r1 */
65 movs r1, r1, lsr #1
66 orrcs ip, ip, #0x10000000 /* ip bit 0x10000000 = bit 0 of r1 */
67 b .L_divide_l1
68
69.L_divide_l0: /* r0 == 1 */
70 mov r0, r1
71 mov r1, #0
72 RET
73
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
77
78#ifdef __ARM_EABI__
79ENTRY_NP(__aeabi_idiv)
80ENTRY_NP(__aeabi_idivmod)
81#endif
74ENTRY_NP(__divsi3)
75.L_divide: /* r0 = r0 / r1; r1 = r0 % r1 */
76 eor r0, r1, r0
77 eor r1, r0, r1
78 eor r0, r1, r0
79 /* r0 = r1 / r0; r1 = r1 % r0 */
80 cmp r0, #1
81 bcc .L_overflow
82 beq .L_divide_l0
83 ands ip, r0, #0x80000000
84 rsbmi r0, r0, #0
85 ands r2, r1, #0x80000000
86 eor ip, ip, r2
87 rsbmi r1, r1, #0
88 orr ip, r2, ip, lsr #1 /* ip bit 0x40000000 = -ve division */
89 /* ip bit 0x80000000 = -ve remainder */
90
91.L_divide_l1:
92 mov r2, #1
93 mov r3, #0
94
95 /*
96 * If the highest bit of the dividend is set, we have to be
97 * careful when shifting the divisor. Test this.
98 */
99 movs r1,r1
100 bpl .L_old_code
101
102 /*
103 * At this point, the highest bit of r1 is known to be set.
104 * We abuse this below in the tst instructions.
105 */
106 tst r1, r0 /*, lsl #0 */
107 bmi .L_divide_b1
108 tst r1, r0, lsl #1
109 bmi .L_divide_b2
110 tst r1, r0, lsl #2
111 bmi .L_divide_b3
112 tst r1, r0, lsl #3
113 bmi .L_divide_b4
114 tst r1, r0, lsl #4
115 bmi .L_divide_b5
116 tst r1, r0, lsl #5
117 bmi .L_divide_b6
118 tst r1, r0, lsl #6
119 bmi .L_divide_b7
120 tst r1, r0, lsl #7
121 bmi .L_divide_b8
122 tst r1, r0, lsl #8
123 bmi .L_divide_b9
124 tst r1, r0, lsl #9
125 bmi .L_divide_b10
126 tst r1, r0, lsl #10
127 bmi .L_divide_b11
128 tst r1, r0, lsl #11
129 bmi .L_divide_b12
130 tst r1, r0, lsl #12
131 bmi .L_divide_b13
132 tst r1, r0, lsl #13
133 bmi .L_divide_b14
134 tst r1, r0, lsl #14
135 bmi .L_divide_b15
136 tst r1, r0, lsl #15
137 bmi .L_divide_b16
138 tst r1, r0, lsl #16
139 bmi .L_divide_b17
140 tst r1, r0, lsl #17
141 bmi .L_divide_b18
142 tst r1, r0, lsl #18
143 bmi .L_divide_b19
144 tst r1, r0, lsl #19
145 bmi .L_divide_b20
146 tst r1, r0, lsl #20
147 bmi .L_divide_b21
148 tst r1, r0, lsl #21
149 bmi .L_divide_b22
150 tst r1, r0, lsl #22
151 bmi .L_divide_b23
152 tst r1, r0, lsl #23
153 bmi .L_divide_b24
154 tst r1, r0, lsl #24
155 bmi .L_divide_b25
156 tst r1, r0, lsl #25
157 bmi .L_divide_b26
158 tst r1, r0, lsl #26
159 bmi .L_divide_b27
160 tst r1, r0, lsl #27
161 bmi .L_divide_b28
162 tst r1, r0, lsl #28
163 bmi .L_divide_b29
164 tst r1, r0, lsl #29
165 bmi .L_divide_b30
166 tst r1, r0, lsl #30
167 bmi .L_divide_b31
168/*
169 * instead of:
170 * tst r1, r0, lsl #31
171 * bmi .L_divide_b32
172 */
173 b .L_divide_b32
174
175.L_old_code:
176 cmp r1, r0
177 bcc .L_divide_b0
178 cmp r1, r0, lsl #1
179 bcc .L_divide_b1
180 cmp r1, r0, lsl #2
181 bcc .L_divide_b2
182 cmp r1, r0, lsl #3
183 bcc .L_divide_b3
184 cmp r1, r0, lsl #4
185 bcc .L_divide_b4
186 cmp r1, r0, lsl #5
187 bcc .L_divide_b5
188 cmp r1, r0, lsl #6
189 bcc .L_divide_b6
190 cmp r1, r0, lsl #7
191 bcc .L_divide_b7
192 cmp r1, r0, lsl #8
193 bcc .L_divide_b8
194 cmp r1, r0, lsl #9
195 bcc .L_divide_b9
196 cmp r1, r0, lsl #10
197 bcc .L_divide_b10
198 cmp r1, r0, lsl #11
199 bcc .L_divide_b11
200 cmp r1, r0, lsl #12
201 bcc .L_divide_b12
202 cmp r1, r0, lsl #13
203 bcc .L_divide_b13
204 cmp r1, r0, lsl #14
205 bcc .L_divide_b14
206 cmp r1, r0, lsl #15
207 bcc .L_divide_b15
208 cmp r1, r0, lsl #16
209 bcc .L_divide_b16
210 cmp r1, r0, lsl #17
211 bcc .L_divide_b17
212 cmp r1, r0, lsl #18
213 bcc .L_divide_b18
214 cmp r1, r0, lsl #19
215 bcc .L_divide_b19
216 cmp r1, r0, lsl #20
217 bcc .L_divide_b20
218 cmp r1, r0, lsl #21
219 bcc .L_divide_b21
220 cmp r1, r0, lsl #22
221 bcc .L_divide_b22
222 cmp r1, r0, lsl #23
223 bcc .L_divide_b23
224 cmp r1, r0, lsl #24
225 bcc .L_divide_b24
226 cmp r1, r0, lsl #25
227 bcc .L_divide_b25
228 cmp r1, r0, lsl #26
229 bcc .L_divide_b26
230 cmp r1, r0, lsl #27
231 bcc .L_divide_b27
232 cmp r1, r0, lsl #28
233 bcc .L_divide_b28
234 cmp r1, r0, lsl #29
235 bcc .L_divide_b29
236 cmp r1, r0, lsl #30
237 bcc .L_divide_b30
238.L_divide_b32:
239 cmp r1, r0, lsl #31
240 subhs r1, r1,r0, lsl #31
241 addhs r3, r3,r2, lsl #31
242.L_divide_b31:
243 cmp r1, r0, lsl #30
244 subhs r1, r1,r0, lsl #30
245 addhs r3, r3,r2, lsl #30
246.L_divide_b30:
247 cmp r1, r0, lsl #29
248 subhs r1, r1,r0, lsl #29
249 addhs r3, r3,r2, lsl #29
250.L_divide_b29:
251 cmp r1, r0, lsl #28
252 subhs r1, r1,r0, lsl #28
253 addhs r3, r3,r2, lsl #28
254.L_divide_b28:
255 cmp r1, r0, lsl #27
256 subhs r1, r1,r0, lsl #27
257 addhs r3, r3,r2, lsl #27
258.L_divide_b27:
259 cmp r1, r0, lsl #26
260 subhs r1, r1,r0, lsl #26
261 addhs r3, r3,r2, lsl #26
262.L_divide_b26:
263 cmp r1, r0, lsl #25
264 subhs r1, r1,r0, lsl #25
265 addhs r3, r3,r2, lsl #25
266.L_divide_b25:
267 cmp r1, r0, lsl #24
268 subhs r1, r1,r0, lsl #24
269 addhs r3, r3,r2, lsl #24
270.L_divide_b24:
271 cmp r1, r0, lsl #23
272 subhs r1, r1,r0, lsl #23
273 addhs r3, r3,r2, lsl #23
274.L_divide_b23:
275 cmp r1, r0, lsl #22
276 subhs r1, r1,r0, lsl #22
277 addhs r3, r3,r2, lsl #22
278.L_divide_b22:
279 cmp r1, r0, lsl #21
280 subhs r1, r1,r0, lsl #21
281 addhs r3, r3,r2, lsl #21
282.L_divide_b21:
283 cmp r1, r0, lsl #20
284 subhs r1, r1,r0, lsl #20
285 addhs r3, r3,r2, lsl #20
286.L_divide_b20:
287 cmp r1, r0, lsl #19
288 subhs r1, r1,r0, lsl #19
289 addhs r3, r3,r2, lsl #19
290.L_divide_b19:
291 cmp r1, r0, lsl #18
292 subhs r1, r1,r0, lsl #18
293 addhs r3, r3,r2, lsl #18
294.L_divide_b18:
295 cmp r1, r0, lsl #17
296 subhs r1, r1,r0, lsl #17
297 addhs r3, r3,r2, lsl #17
298.L_divide_b17:
299 cmp r1, r0, lsl #16
300 subhs r1, r1,r0, lsl #16
301 addhs r3, r3,r2, lsl #16
302.L_divide_b16:
303 cmp r1, r0, lsl #15
304 subhs r1, r1,r0, lsl #15
305 addhs r3, r3,r2, lsl #15
306.L_divide_b15:
307 cmp r1, r0, lsl #14
308 subhs r1, r1,r0, lsl #14
309 addhs r3, r3,r2, lsl #14
310.L_divide_b14:
311 cmp r1, r0, lsl #13
312 subhs r1, r1,r0, lsl #13
313 addhs r3, r3,r2, lsl #13
314.L_divide_b13:
315 cmp r1, r0, lsl #12
316 subhs r1, r1,r0, lsl #12
317 addhs r3, r3,r2, lsl #12
318.L_divide_b12:
319 cmp r1, r0, lsl #11
320 subhs r1, r1,r0, lsl #11
321 addhs r3, r3,r2, lsl #11
322.L_divide_b11:
323 cmp r1, r0, lsl #10
324 subhs r1, r1,r0, lsl #10
325 addhs r3, r3,r2, lsl #10
326.L_divide_b10:
327 cmp r1, r0, lsl #9
328 subhs r1, r1,r0, lsl #9
329 addhs r3, r3,r2, lsl #9
330.L_divide_b9:
331 cmp r1, r0, lsl #8
332 subhs r1, r1,r0, lsl #8
333 addhs r3, r3,r2, lsl #8
334.L_divide_b8:
335 cmp r1, r0, lsl #7
336 subhs r1, r1,r0, lsl #7
337 addhs r3, r3,r2, lsl #7
338.L_divide_b7:
339 cmp r1, r0, lsl #6
340 subhs r1, r1,r0, lsl #6
341 addhs r3, r3,r2, lsl #6
342.L_divide_b6:
343 cmp r1, r0, lsl #5
344 subhs r1, r1,r0, lsl #5
345 addhs r3, r3,r2, lsl #5
346.L_divide_b5:
347 cmp r1, r0, lsl #4
348 subhs r1, r1,r0, lsl #4
349 addhs r3, r3,r2, lsl #4
350.L_divide_b4:
351 cmp r1, r0, lsl #3
352 subhs r1, r1,r0, lsl #3
353 addhs r3, r3,r2, lsl #3
354.L_divide_b3:
355 cmp r1, r0, lsl #2
356 subhs r1, r1,r0, lsl #2
357 addhs r3, r3,r2, lsl #2
358.L_divide_b2:
359 cmp r1, r0, lsl #1
360 subhs r1, r1,r0, lsl #1
361 addhs r3, r3,r2, lsl #1
362.L_divide_b1:
363 cmp r1, r0
364 subhs r1, r1, r0
365 addhs r3, r3, r2
366.L_divide_b0:
367
368 tst ip, #0x20000000
369 bne .L_udivide_l1
370 mov r0, r3
371 cmp ip, #0
372 rsbmi r1, r1, #0
373 movs ip, ip, lsl #1
374 bicmi r0, r0, #0x80000000 /* Fix incase we divided 0x80000000 */
375 rsbmi r0, r0, #0
376 RET
377
378.L_udivide_l1:
379 tst ip, #0x10000000
380 mov r1, r1, lsl #1
381 orrne r1, r1, #1
382 mov r3, r3, lsl #1
383 cmp r1, r0
384 subhs r1, r1, r0
385 addhs r3, r3, r2
386 mov r0, r3
387 RET
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