=> 0x40405180 <strlen>:	ldrb	r2, [r0, #0]
   0x40405182 <strlen+2>:	and.w	r3, r0, #7
   0x40405186 <strlen+6>:	mov	r1, r0
   0x40405188 <strlen+8>:	rsb	r3, r3, #15
   0x4040518c <strlen+12>:	cmp	r2, #0
   0x4040518e <strlen+14>:	beq.n	0x404051ec <strlen+108>
   0x40405190 <strlen+16>:	ldrb.w	r2, [r0, #1]!
   0x40405194 <strlen+20>:	subs	r3, #1
   0x40405196 <strlen+22>:	it	ne
   0x40405198 <strlen+24>:	cmpne	r2, #0
   0x4040519a <strlen+26>:	bne.n	0x40405190 <strlen+16>
   0x4040519c <strlen+28>:	cmp	r2, #0
   0x4040519e <strlen+30>:	beq.n	0x404051ec <strlen+108>
   0x404051a0 <strlen+32>:	add.w	r0, r0, #1
   0x404051a4 <strlen+36>:	ldrd	r2, r3, [r0], #8
   0x404051a8 <strlen+40>:	movw	r12, #257	; 0x101