| blob | 23335bf01c34ce5e83b476fcb996980fa23d563e |
1 /***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2008 by Jens Arnold
11 * Copyright (C) 2009 by Andrew Mahone
12 *
13 * Optimised replacements for libgcc functions
14 *
15 * Based on: libgcc routines for ARM cpu, additional algorithms from ARM System
16 * Developer's Guide
17 * Division routines, written by Richard Earnshaw, (rearnsha@armltd.co.uk)
18 * Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005
19 * Free Software Foundation, Inc.
20 *
21 * This program is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU General Public License
23 * as published by the Free Software Foundation; either version 2
24 * of the License, or (at your option) any later version.
25 *
26 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
27 * KIND, either express or implied.
28 *
29 ****************************************************************************/
31 #include <config.h>
33 .macro ARM_SDIV32_PRE numerator, divisor, sign
34 /* sign[31] = divisor sign */
35 ands \sign, \divisor, #1<<31
36 rsbeq \divisor, \divisor, #0
37 /* sign[31] = result sign, sign[0:30], C = numerator sign */
38 eors \sign, \sign, \numerator, asr #32
39 rsbcs \numerator, \numerator, #0
40 .endm
42 .macro ARM_SDIV32_POST quotient, remainder, sign
43 movs \sign, \sign, lsl #1
44 .ifnc "", "\quotient"
45 rsbcs \quotient, \quotient, #0
46 .endif
47 .ifnc "", "\remainder"
48 rsbmi \remainder, \remainder, #0
49 .endif
50 .endm
52 #if ARM_ARCH < 5
53 .macro ARMV4_UDIV32_BODY numerator, divisor, quotient, remainder, tmp, bits, div0label, return
54 .ifnc "", "\div0label"
55 rsbs \divisor, \divisor, #0
56 beq \div0label
57 .else
58 rsb \divisor, \divisor, #0
59 .endif
60 /* This SWAR divider requires a numerator less than 1<<31, because it must
61 be able to shift the remainder left at each step without shifting out
62 topmost bit. Since a shift might be needed for the aligned remainder to
63 exceed the divisor, the topmost bit must be unset at the start to avoid
64 this overflow case. The original numerator is saved so that the result
65 can be corrected after the reduced division completes. */
66 cmn \numerator, \divisor
67 .ifc "", "\quotient"
68 .ifc "\numerator", "\remainder"
69 .if \return
70 bxcc lr
71 .else
72 b 99f
73 .endif
74 .else
75 bcc 20f
76 .endif
77 .else
78 bcc 20f
79 .endif
80 movs \tmp, \numerator
81 movmi \numerator, \numerator, lsr #1
82 mov \bits, #30
83 .set shift, 16
84 .rept 5
85 cmn \divisor, \numerator, lsr #shift
86 subcs \bits, \bits, #shift
87 movcs \divisor, \divisor, lsl #shift
88 .set shift, shift >> 1
89 .endr
90 adds \numerator, \numerator, \divisor
91 subcc \numerator, \numerator, \divisor
92 add pc, pc, \bits, lsl #3
93 nop
94 .rept 30
95 adcs \numerator, \divisor, \numerator, lsl #1
96 subcc \numerator, \numerator, \divisor
97 .endr
98 adc \numerator, \numerator, \numerator
99 movs \tmp, \tmp, asr #1
100 rsb \bits, \bits, #31
101 bmi 10f
102 .ifc "", "\quotient"
103 mov \remainder, \numerator, lsr \bits
104 .else
105 .ifc "", "\remainder"
106 mov \divisor, \numerator, lsr \bits
107 eor \quotient, \numerator, \divisor, lsl \bits
108 .else
109 mov \remainder, \numerator, lsr \bits
110 eor \quotient, \numerator, \remainder, lsl \bits
111 .endif
112 .endif
113 .ifne \return
114 bx lr
115 .else
116 b 99f
117 .endif
118 10:
119 mov \tmp, \numerator, lsr \bits
120 eor \numerator, \numerator, \tmp, lsl \bits
121 sub \bits, \bits, #1
122 adc \tmp, \tmp, \tmp
123 adds \tmp, \tmp, \divisor, asr \bits
124 .ifnc "", "\quotient"
125 adc \quotient, \numerator, \numerator
126 .endif
127 .ifnc "", "\remainder"
128 subcc \remainder, \tmp, \divisor, asr \bits
129 movcs \remainder, \tmp
130 .endif
131 .ifne \return
132 bx lr
133 .else
134 b 99f
135 .endif
136 20:
137 .ifnc "", "\remainder"
138 .ifnc "\remainder", "\numerator"
139 mov \remainder, \numerator
140 .endif
141 .endif
142 .ifnc "", "\quotient"
143 mov \quotient, #0
144 .endif
145 .ifne \return
146 bx lr
147 .else
148 99:
149 .endif
150 .endm
152 .macro ARMV4_SDIV32_BODY numerator, divisor, quotient, remainder, bits, sign, div0label, return
153 /* When this is wrapped for signed division, the wrapper code will handle
154 inverting the divisor, and also the zero divisor test. */
155 ARM_SDIV32_PRE \numerator, \divisor, \sign
156 .ifnc "", "\div0label"
157 tst \divisor, \divisor
158 beq \div0label
159 .endif
160 /* This SWAR divider requires a numerator less than 1<<31, because it must
161 be able to shift the remainder left at each step without shifting out
162 topmost bit. With signed inputs, whose absolute value may not exceed
163 1<<31,this may be accomplished simply by subtracting the divisor before
164 beginning division, and adding 1 to the quotient. */
165 adds \numerator, \numerator, \divisor
166 bcc 20f
167 mov \bits, #30
168 .set shift, 16
169 .rept 5
170 cmn \divisor, \numerator, lsr #shift
171 subcs \bits, \bits, #shift
172 movcs \divisor, \divisor, lsl #shift
173 .set shift, shift >> 1
174 .endr
175 adds \numerator, \numerator, \divisor
176 subcc \numerator, \numerator, \divisor
177 add pc, pc, \bits, lsl #3
178 nop
179 .rept 30
180 adcs \numerator, \divisor, \numerator, lsl #1
181 subcc \numerator, \numerator, \divisor
182 .endr
183 rsb \bits, \bits, #31
184 adc \numerator, \numerator, \numerator
185 .ifc "", "\quotient"
186 mov \remainder, \numerator, lsr \bits
187 .else
188 .ifc "", "\remainder"
189 mov \divisor, \numerator, lsr \bits
190 add \numerator, \numerator, #1
191 sub \quotient, \numerator, \divisor, lsl \bits
192 .else
193 mov \remainder, \numerator, lsr \bits
194 add \numerator, \numerator, #1
195 sub \quotient, \numerator, \remainder, lsl \bits
196 .endif
197 .endif
198 .ifne \return
199 ARM_SDIV32_POST \quotient, \remainder, \sign
200 bx lr
201 .else
202 b 99f
203 .endif
204 20:
205 .ifnc "", "\remainder"
206 sub \remainder, \numerator, \divisor
207 .endif
208 .ifnc "", "\quotient"
209 mov \quotient, #0
210 .endif
211 .ifne \return
212 ARM_SDIV32_POST "", \remainder, \sign
213 bx lr
214 .else
215 99:
216 ARM_SDIV32_POST \quotient, \remainder, \sign
217 .endif
218 .endm
220 #else
221 .macro ARMV5_UDIV32_BODY numerator, divisor, quotient, remainder, bits, inv, neg, div0label, return
222 cmp \numerator, \divisor
223 clz \bits, \divisor
224 bcc 30f
225 mov \inv, \divisor, lsl \bits
226 add \neg, pc, \inv, lsr #25
227 /* Test whether divisor is 2^N */
228 cmp \inv, #1<<31
229 /* Load approximate reciprocal */
230 ldrhib \inv, [\neg, #.L_udiv_est_table-.-64]
231 bls 20f
232 subs \bits, \bits, #7
233 rsb \neg, \divisor, #0
234 /* Scale approximate reciprocal, or else branch to large-divisor path */
235 movpl \divisor, \inv, lsl \bits
236 bmi 10f
237 /* Newton-Raphson iteration to improve reciprocal accuracy */
238 mul \inv, \divisor, \neg
239 smlawt \divisor, \divisor, \inv, \divisor
240 mul \inv, \divisor, \neg
241 /* Complete N-R math and produce approximate quotient. Use smmla/smmul on
242 ARMv6. */
243 #if ARM_ARCH >= 6
244 tst \numerator, \numerator
245 smmla \divisor, \divisor, \inv, \divisor
246 /* Branch to large-numerator handler, or else use smmul if sign bit is not
247 set. This wins on average with random numerators, and should be no
248 slower than using umull for small numerator, even if prediction fails.
249 */
250 bmi 40f
251 smmul \inv, \numerator, \divisor
252 #else
253 /* ARMv5e lacks smmul, so always uses umull. */
254 mov \bits, #0
255 smlal \bits, \divisor, \inv, \divisor
256 umull \bits, \inv, \numerator, \divisor
257 #endif
258 /* Calculate remainder and correct result. */
259 add \numerator, \numerator, \neg
260 .ifnc "", "\remainder"
261 mla \remainder, \inv, \neg, \numerator
262 .ifnc "", "\quotient"
263 mov \quotient, \inv
264 cmn \remainder, \neg
265 subcs \remainder, \remainder, \neg
266 addpl \remainder, \remainder, \neg, lsl #1
267 addcc \quotient, \quotient, #1
268 addpl \quotient, \quotient, #2
269 .else
270 cmn \remainder, \neg
271 subcs \remainder, \remainder, \neg
272 addpl \remainder, \remainder, \neg, lsl #1
273 .endif
274 .else
275 mla \divisor, \inv, \neg, \numerator
276 mov \quotient, \inv
277 cmn \divisor, \neg
278 addcc \quotient, \quotient, #1
279 addpl \quotient, \quotient, #2
280 .endif
281 .if \return
282 bx lr
283 .else
284 b 99f
285 .endif
286 10:
287 /* Very large divisors can be handled without further improving the
288 reciprocal. First the reciprocal must be reduced to ensure that it
289 underestimates the correct value. */
290 rsb \bits, \bits, #0
291 sub \inv, \inv, #4
292 mov \divisor, \inv, lsr \bits
293 /* Calculate approximate quotient and remainder */
294 umull \bits, \inv, \numerator, \divisor
295 /* Correct quotient and remainder */
296 .ifnc "", "\remainder"
297 mla \remainder, \inv, \neg, \numerator
298 .ifnc "", "\quotient"
299 mov \quotient, \inv
300 cmn \neg, \remainder, lsr #1
301 addcs \remainder, \remainder, \neg, lsl #1
302 addcs \quotient, \quotient, #2
303 cmn \neg, \remainder
304 addcs \remainder, \remainder, \neg
305 addcs \quotient, \quotient, #1
306 .else
307 cmn \neg, \remainder, lsr #1
308 addcs \remainder, \remainder, \neg, lsl #1
309 cmn \neg, \remainder
310 addcs \remainder, \remainder, \neg
311 .endif
312 .else
313 mla \divisor, \inv, \neg, \numerator
314 mov \quotient, \inv
315 cmn \neg, \divisor, lsr #1
316 addcs \divisor, \divisor, \neg, lsl #1
317 addcs \quotient, \quotient, #2
318 cmn \neg, \divisor
319 addcs \quotient, \quotient, #1
320 .endif
321 .if \return
322 bx lr
323 .else
324 b 99f
325 .endif
326 20:
327 /* Handle division by powers of two by shifting right. Mod is handled
328 by using divisor-1 as a bitmask. */
329 .ifnc "", "\remainder"
330 .ifnc "", "\div0label"
331 bne \div0label
332 .endif
333 .ifnc "", "\quotient"
334 sub \divisor, \divisor, #1
335 rsb \bits, \bits, #31
336 and \remainder, \numerator, \divisor
337 mov \quotient, \numerator, lsr \bits
338 .else
339 sub \divisor, \divisor, #1
340 and \remainder, \numerator, \divisor
341 .endif
342 .else
343 rsb \bits, \bits, #31
344 .ifnc "", "\div0label"
345 bne \div0label
346 .endif
347 mov \quotient, \numerator, lsr \bits
348 .endif
349 .if \return
350 bx lr
351 .else
352 b 99f
353 .endif
354 30:
355 /* Handle numerator < divisor - quotient is zero, remainder is numerator,
356 which must be restored to its original value on ARMv6. */
357 .ifnc "", "\remainder"
358 mov \remainder, \numerator
359 .endif
360 .ifnc "", "\quotient"
361 mov \quotient, #0
362 .endif
363 .if \return
364 bx lr
365 .endif
366 #if ARM_ARCH >= 6
367 40:
368 /* Handle large (sign bit set) numerators. Works exactly as the ARMv5e code
369 above 10:. */
370 umull \bits, \inv, \numerator, \divisor
371 add \numerator, \numerator, \neg
372 .ifnc "", "\remainder"
373 mla \remainder, \inv, \neg, \numerator
374 .ifnc "", "\quotient"
375 mla \remainder, \inv, \neg, \numerator
376 mov \quotient, \inv
377 cmn \remainder, \neg
378 subcs \remainder, \remainder, \neg
379 addpl \remainder, \remainder, \neg, lsl #1
380 addcc \quotient, \quotient, #1
381 addpl \quotient, \quotient, #2
382 .else
383 cmn \remainder, \neg
384 subcs \remainder, \remainder, \neg
385 addpl \remainder, \remainder, \neg, lsl #1
386 .endif
387 .else
388 mla \divisor, \inv, \neg, \numerator
389 mov \quotient, \inv
390 cmn \divisor, \neg
391 addcc \quotient, \quotient, #1
392 addpl \quotient, \quotient, #2
393 .endif
394 .if \return
395 bx lr
396 .else
397 b 99f
398 .endif
399 #endif
400 99:
401 .endm
403 .macro ARMV5_SDIV32_BODY numerator, divisor, quotient, remainder, bits, inv, neg, sign, div0label, return
404 /* sign[31] = divisor sign */
405 ands \sign, \divisor, #1<<31
406 rsbne \divisor, \divisor, #0
407 /* sign[31] = result sign, sign[0:30], C = numerator sign */
408 eors \sign, \sign, \numerator, asr #32
409 clz \bits, \divisor
410 rsbcs \numerator, \numerator, #0
411 /* On ARMv6, subtract divisor before performing division, which ensures
412 numerator sign bit is clear and smmul may be used in place of umull. The
413 fixup for the results can be fit entirely into existing delay slots on
414 the main division paths. It costs 1c in the num<div path if the
415 the remainder is to be produced in the numerator's register, and 1c in
416 the power-of-2-divisor path only if producing both remainder and
417 quotient. */
418 #if ARM_ARCH >= 6
419 subs \numerator, \numerator, \divisor
420 #else
421 cmp \numerator, \divisor
422 #endif
423 movcs \inv, \divisor, lsl \bits
424 bcc 30f
425 /* Test whether divisor is 2^N */
426 cmp \inv, #1<<31
427 add \inv, pc, \inv, lsr #25
428 bls 20f
429 /* Load approximate reciprocal */
430 ldrb \inv, [\inv, #.L_udiv_est_table-.-64]
431 subs \bits, \bits, #7
432 rsb \neg, \divisor, #0
433 /* Scale approximate reciprocal, or else branch to large-divisor path */
434 movpl \divisor, \inv, lsl \bits
435 bmi 10f
436 /* Newton-Raphson iteration to improve reciprocal accuracy */
437 mul \inv, \divisor, \neg
438 smlawt \divisor, \divisor, \inv, \divisor
439 mul \inv, \divisor, \neg
440 /* Complete N-R math and produce approximate quotient. Use smmla/smmul on
441 ARMv6. */
442 #if ARM_ARCH >= 6
443 smmla \divisor, \divisor, \inv, \divisor
444 smmul \inv, \numerator, \divisor
445 #else
446 mov \bits, #0
447 smlal \bits, \divisor, \inv, \divisor
448 umull \bits, \inv, \numerator, \divisor
449 #endif
450 /* Calculate remainder and correct quotient. */
451 add \numerator, \numerator, \neg
452 .ifnc "", "\remainder"
453 mla \remainder, \inv, \neg, \numerator
454 .ifnc "", "\quotient"
455 #if ARM_ARCH >= 6
456 add \quotient, \inv, #1
457 #else
458 mov \quotient, \inv
459 #endif
460 cmn \remainder, \neg
461 subcs \remainder, \remainder, \neg
462 addpl \remainder, \remainder, \neg, lsl #1
463 addcc \quotient, \quotient, #1
464 addpl \quotient, \quotient, #2
465 .else
466 cmn \remainder, \neg
467 subcs \remainder, \remainder, \neg
468 addpl \remainder, \remainder, \neg, lsl #1
469 .endif
470 .else
471 mla \divisor, \inv, \neg, \numerator
472 #if ARM_ARCH >= 6
473 add \quotient, \inv, #1
474 #else
475 mov \quotient, \inv
476 #endif
477 cmn \divisor, \neg
478 addcc \quotient, \quotient, #1
479 addpl \quotient, \quotient, #2
480 .endif
481 ARM_SDIV32_POST \quotient, \remainder, \sign
482 .ifnc "", "\return"
483 \return
484 .else
485 b 99f
486 .endif
487 10:
488 /* Very large divisors can be handled without further improving the
489 reciprocal. First the reciprocal must be reduced to ensure that it
490 underestimates the correct value. */
491 rsb \bits, \bits, #0
492 sub \inv, \inv, #4
493 mov \divisor, \inv, lsr \bits
494 /* Calculate approximate quotient and remainder */
495 #if ARM_ARCH >= 6
496 smmul \inv, \numerator, \divisor
497 #else
498 umull \bits, \inv, \numerator, \divisor
499 #endif
500 /* Correct quotient and remainder */
501 .ifnc "", "\remainder"
502 mla \remainder, \inv, \neg, \numerator
503 .ifnc "", "\quotient"
504 #if ARM_ARCH >= 6
505 add \quotient, \inv, #1
506 #else
507 mov \quotient, \inv
508 #endif
509 cmn \neg, \remainder, lsr #1
510 addcs \remainder, \remainder, \neg, lsl #1
511 addcs \quotient, \quotient, #2
512 cmn \neg, \remainder
513 addcs \remainder, \remainder, \neg
514 addcs \quotient, \quotient, #1
515 .else
516 cmn \neg, \remainder, lsr #1
517 addcs \remainder, \remainder, \neg, lsl #1
518 cmn \neg, \remainder
519 addcs \remainder, \remainder, \neg
520 .endif
521 .else
522 mla \divisor, \inv, \neg, \numerator
523 #if ARM_ARCH >= 6
524 add \quotient, \inv, #1
525 #else
526 mov \quotient, \inv
527 #endif
528 cmn \neg, \divisor, lsr #1
529 addcs \divisor, \divisor, \neg, lsl #1
530 addcs \quotient, \quotient, #2
531 cmn \neg, \divisor
532 addcs \quotient, \quotient, #1
533 .endif
534 ARM_SDIV32_POST \quotient, \remainder, \sign
535 .ifnc "", "\return"
536 \return
537 .else
538 b 99f
539 .endif
540 20:
541 /* Handle division by powers of two by shifting right. Mod is handled
542 by using divisor-1 as a bitmask. */
543 .ifnc "", "\div0label"
544 bne \div0label
545 .endif
546 .ifnc "", "\remainder"
547 .ifnc "", "\quotient"
548 rsb \bits, \bits, #31
549 #if ARM_ARCH >= 6
550 add \numerator, \numerator, \divisor
551 #endif
552 sub \divisor, \divisor, #1
553 and \remainder, \numerator, \divisor
554 mov \quotient, \numerator, lsr \bits
555 .else
556 sub \divisor, \divisor, #1
557 and \remainder, \numerator, \divisor
558 .endif
559 .else
560 rsb \bits, \bits, #31
561 #if ARM_ARCH >= 6
562 add \numerator, \numerator, \divisor
563 #endif
564 mov \quotient, \numerator, lsr \bits
565 .endif
566 ARM_SDIV32_POST \quotient, \remainder, \sign
567 .ifnc "", "\return"
568 \return
569 .else
570 b 99f
571 .endif
572 30:
573 /* Handle numerator < divisor - quotient is zero, remainder is numerator,
574 which must be restored to its original value on ARMv6. */
575 .ifnc "", "\remainder"
576 #if ARM_ARCH >= 6
577 add \remainder, \numerator, \divisor
578 #else
579 .ifnc "\remainder", "\numerator"
580 mov \remainder, \numerator
581 .endif
582 #endif
583 .endif
584 .ifnc "", "\quotient"
585 mov \quotient, #0
586 .endif
587 .ifnc "", "\remainder"
588 ARM_SDIV32_POST "", \remainder, \sign
589 .endif
590 .ifnc "", "\return"
591 \return
592 .endif
593 99:
594 .endm
595 #endif
597 .section .text
599 __div0_wrap_s:
600 sub sp, sp, #4
601 b __div0
602 .size __div0_wrap_s, . - __div0_wrap_s
604 __div0_wrap:
605 str lr, [sp, #-4]!
606 b __div0
607 .size __div0_wrap, . - __div0_wrap
609 #ifndef __ARM_EABI__
610 .global __divsi3
611 .type __divsi3,%function
612 .global __udivsi3
613 .type __udivsi3,%function
614 .global __udivsi3
615 .type __udivsi3,%function
616 #else
617 /* The div+mod averagess a fraction of a cycle worse for signed values, and
618 slightly better for unsigned, so just alias div to divmod. */
619 .global __aeabi_uidivmod
620 .type __aeabi_uidivmod,%function
621 .global __aeabi_uidiv
622 .type __aeabi_uidiv,%function
623 .set __aeabi_uidiv,__aeabi_uidivmod
624 .global __aeabi_idivmod
625 .type __aeabi_idivmod,%function
626 .global __aeabi_idiv
627 .type __aeabi_idiv,%function
628 .set __aeabi_idiv,__aeabi_idivmod
629 #endif
632 #if ARM_ARCH < 5
633 .global __clzsi2
634 .type __clzsi2, %function
636 __clzsi2:
637 orr r0, r0, r0, lsr #8
638 orr r0, r0, r0, lsr #4
639 orr r0, r0, r0, lsr #2
640 orr r0, r0, r0, lsr #1
641 bic r0, r0, r0, lsr #16
642 rsb r0, r0, r0, lsl #14
643 rsb r0, r0, r0, lsl #11
644 rsb r0, r0, r0, lsl #9
645 ldrb r0, [pc, r0, lsr #26]
646 bx lr
647 .byte 32, 20, 19, 0, 0, 18, 0, 7, 10, 17, 0, 0, 14, 0, 6, 0
648 .byte 0, 9, 0, 16, 0, 0, 1, 26, 0, 13, 0, 0, 24, 5, 0, 0
649 .byte 0, 21, 0, 8, 11, 0, 15, 0, 0, 0, 0, 2, 27, 0, 25, 0
650 .byte 22, 0, 12, 0, 0, 3, 28, 0, 23, 0, 4, 29, 0, 0, 30, 31
651 .size __clzsi2, .-__clzsi2
653 #ifndef __ARM_EABI__
654 __udivsi3:
655 ARMV4_UDIV32_BODY r0, r1, r0, "", r2, r3, __div0_wrap, 1
656 .size __udivsi3, . - __udivsi3
658 __divsi3:
659 ARMV4_SDIV32_BODY r0, r1, r0, "", r2, r3, __div0_wrap, 1
660 .size __divsi3, . - __divsi3
662 #else
663 __aeabi_uidivmod:
664 ARMV4_UDIV32_BODY r0, r1, r0, r1, r2, r3, __div0_wrap, 1
665 .size __aeabi_uidivmod, . - __aeabi_uidivmo
667 __aeabi_idivmod:
668 ARMV4_SDIV32_BODY r0, r1, r0, r1, r2, r3, __div0_wrap, 1
669 .size __aeabi_idivmod, . - __aeabi_idivmod
670 #endif
672 #else
673 #ifndef __ARM_EABI__
674 __udivsi3:
675 ARMV5_UDIV32_BODY r0, r1, r0, "", r2, r3, ip, __div0_wrap, 1
676 .size __udivsi3, . - __udivsi3
678 __divsi3:
679 str lr, [sp, #-4]
680 ARMV5_SDIV32_BODY r0, r1, r0, "", r2, lr, ip, r3, __div0_wrap_s, "ldr pc, [sp, #-4]"
681 .size __divsi3, . - __divsi3
683 #else
684 __aeabi_uidivmod:
685 ARMV5_UDIV32_BODY r0, r1, r0, r1, r2, r3, ip, __div0_wrap, 1
686 .size __aeabi_uidivmod, . - __aeabi_uidivmo
688 __aeabi_idivmod:
689 str lr, [sp, #-4]
690 ARMV5_SDIV32_BODY r0, r1, r0, r1, r2, lr, ip, r3, __div0_wrap_s, "ldr pc, [sp, #-4]"
691 .size __aeabi_idivmod, . - __aeabi_idivmod
692 #endif
694 .L_udiv_est_table:
695 .byte 0xff, 0xfc, 0xf8, 0xf4, 0xf0, 0xed, 0xea, 0xe6
696 .byte 0xe3, 0xe0, 0xdd, 0xda, 0xd7, 0xd4, 0xd2, 0xcf
697 .byte 0xcc, 0xca, 0xc7, 0xc5, 0xc3, 0xc0, 0xbe, 0xbc
698 .byte 0xba, 0xb8, 0xb6, 0xb4, 0xb2, 0xb0, 0xae, 0xac
699 .byte 0xaa, 0xa8, 0xa7, 0xa5, 0xa3, 0xa2, 0xa0, 0x9f
700 .byte 0x9d, 0x9c, 0x9a, 0x99, 0x97, 0x96, 0x94, 0x93
701 .byte 0x92, 0x90, 0x8f, 0x8e, 0x8d, 0x8c, 0x8a, 0x89
702 .byte 0x88, 0x87, 0x86, 0x85, 0x84, 0x83, 0x82, 0x81
703 #endif