Disassembly of section .text.__udelay:

00000000 <__udelay>:
   0:	e92d 4cf0 	stmdb	sp!, {r4, r5, r6, r7, sl, fp, lr}
   4:	ee1e 1f10 	mrc	15, 0, r1, cr14, cr0, {0}
   8:	f244 243f 	movw	r4, #16959	; 0x423f
   c:	f2c0 040f 	movt	r4, #15
  10:	2500      	movs	r5, #0
  12:	f243 4edb 	movw	lr, #13531	; 0x34db
  16:	fbe1 4500 	umlal	r4, r5, r1, r0
  1a:	f2cd 7eb6 	movt	lr, #55222	; 0xd7b6
  1e:	f64d 6c82 	movw	ip, #56962	; 0xde82
  22:	f2c4 3c1b 	movt	ip, #17179	; 0x431b
  26:	2300      	movs	r3, #0
  28:	fba4 670e 	umull	r6, r7, r4, lr
  2c:	4629      	mov	r1, r5
  2e:	2500      	movs	r5, #0
  30:	2600      	movs	r6, #0
  32:	fba4 ab0c 	umull	sl, fp, r4, ip
  36:	fb0e 7205 	mla	r2, lr, r5, r7
  3a:	fb0c bb05 	mla	fp, ip, r5, fp
  3e:	2500      	movs	r5, #0
  40:	fbee 2301 	umlal	r2, r3, lr, r1
  44:	46ce      	mov	lr, r9
  46:	eb1a 0a02 	adds.w	sl, sl, r2
  4a:	eb4b 0b03 	adc.w	fp, fp, r3
  4e:	459b      	cmp	fp, r3
  50:	f64d 6382 	movw	r3, #56962	; 0xde82
  54:	f2c4 331b 	movt	r3, #17179	; 0x431b
  58:	465c      	mov	r4, fp
  5a:	bf08      	it	eq
  5c:	4592      	cmpeq	sl, r2
  5e:	fbe3 4501 	umlal	r4, r5, r3, r1
  62:	ec51 0f0e 	mrrc	15, 0, r0, r1, cr14
  66:	bf2c      	ite	cs
  68:	2700      	movcs	r7, #0
  6a:	2701      	movcc	r7, #1
  6c:	f8c9 00a4 	str.w	r0, [r9, #164]	; 0xa4
  70:	19a4      	adds	r4, r4, r6
  72:	4602      	mov	r2, r0
  74:	417d      	adcs	r5, r7
  76:	f8c9 10a0 	str.w	r1, [r9, #160]	; 0xa0
  7a:	0ca4      	lsrs	r4, r4, #18
  7c:	460b      	mov	r3, r1
  7e:	ea44 3485 	orr.w	r4, r4, r5, lsl #14
  82:	1900      	adds	r0, r0, r4
  84:	f141 0100 	adc.w	r1, r1, #0
  88:	428b      	cmp	r3, r1
  8a:	f8ce 20a4 	str.w	r2, [lr, #164]	; 0xa4
  8e:	bf08      	it	eq
  90:	4282      	cmpeq	r2, r0
  92:	f8ce 30a0 	str.w	r3, [lr, #160]	; 0xa0
  96:	d3f7      	bcc.n	88 <__udelay+0x88>
  98:	e8bd 8cf0 	ldmia.w	sp!, {r4, r5, r6, r7, sl, fp, pc}