int main()
{
 8000de0:	e92d 4ff0 	stmdb	sp!, {r4, r5, r6, r7, r8, r9, sl, fp, lr}
 8000de4:	ed2d 8b02 	vpush	{d8}
 8000de8:	b083      	sub	sp, #12
    init_clock();
 8000dea:	f7ff ff5b 	bl	8000ca4 <init_clock>
    init_io();
 8000dee:	f7ff ffab 	bl	8000d48 <init_io>

    // Initialize the timer for 1 ms intervals
    SysTick_Config(SystemCoreClock/1000);
 8000df2:	4b31      	ldr	r3, [pc, #196]	; (8000eb8 <main+0xd8>)
 8000df4:	681b      	ldr	r3, [r3, #0]
 8000df6:	4a31      	ldr	r2, [pc, #196]	; (8000ebc <main+0xdc>)
 8000df8:	fba2 2303 	umull	r2, r3, r2, r3
 8000dfc:	099b      	lsrs	r3, r3, #6
           function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
           must contain a vendor-specific implementation of this function.
 */
__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
{
  if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
 8000dfe:	3b01      	subs	r3, #1
 8000e00:	f1b3 7f80 	cmp.w	r3, #16777216	; 0x1000000
 8000e04:	d209      	bcs.n	8000e1a <main+0x3a>
  {
    return (1UL);                                                   /* Reload value impossible */
  }

  SysTick->LOAD  = (uint32_t)(ticks - 1UL);                         /* set reload register */
 8000e06:	4a2e      	ldr	r2, [pc, #184]	; (8000ec0 <main+0xe0>)
 8000e08:	6053      	str	r3, [r2, #4]
    SCB->SHP[(((uint32_t)(int32_t)IRQn) & 0xFUL)-4UL] = (uint8_t)((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL);
 8000e0a:	4b2e      	ldr	r3, [pc, #184]	; (8000ec4 <main+0xe4>)
 8000e0c:	21f0      	movs	r1, #240	; 0xf0
 8000e0e:	f883 1023 	strb.w	r1, [r3, #35]	; 0x23
  NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
  SysTick->VAL   = 0UL;                                             /* Load the SysTick Counter Value */
 8000e12:	2300      	movs	r3, #0
 8000e14:	6093      	str	r3, [r2, #8]
  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
 8000e16:	2307      	movs	r3, #7
 8000e18:	6013      	str	r3, [r2, #0]

    printf("Start\n");
 8000e1a:	482b      	ldr	r0, [pc, #172]	; (8000ec8 <main+0xe8>)
 8000e1c:	f000 fdc8 	bl	80019b0 <puts>
    delay_ms(100);
 8000e20:	2064      	movs	r0, #100	; 0x64
 8000e22:	f7ff ff21 	bl	8000c68 <delay_ms>

    while (1)
    {
        // LED an
        WRITE_REG(GPIOA->BSRR, GPIO_BSRR_BS_5);
 8000e26:	f04f 4890 	mov.w	r8, #1207959552	; 0x48000000
 8000e2a:	f04f 0b20 	mov.w	fp, #32

        uint32_t start=systick_count;
 8000e2e:	4d27      	ldr	r5, [pc, #156]	; (8000ecc <main+0xec>)
        float f=1.0;
        for (int i=0; i<10000; i++)
        {
             f=f*1.001;
 8000e30:	a71f      	add	r7, pc, #124	; (adr r7, 8000eb0 <main+0xd0>)
 8000e32:	e9d7 6700 	ldrd	r6, r7, [r7]
             if (f>100000.0)
 8000e36:	eddf 8a26 	vldr	s17, [pc, #152]	; 8000ed0 <main+0xf0>
             {
                 f=1.0;
             }
        }
        printf("f=%f, duration=%ld ms\n",f, systick_count-start);
 8000e3a:	f8df a09c 	ldr.w	sl, [pc, #156]	; 8000ed8 <main+0xf8>
 8000e3e:	e014      	b.n	8000e6a <main+0x8a>
 8000e40:	682c      	ldr	r4, [r5, #0]
 8000e42:	ee17 0a90 	vmov	r0, s15
 8000e46:	f7ff fb87 	bl	8000558 <__aeabi_f2d>
 8000e4a:	eba4 0409 	sub.w	r4, r4, r9
 8000e4e:	9400      	str	r4, [sp, #0]
 8000e50:	4602      	mov	r2, r0
 8000e52:	460b      	mov	r3, r1
 8000e54:	4650      	mov	r0, sl
 8000e56:	f000 fd37 	bl	80018c8 <iprintf>

        // LED aus
        WRITE_REG(GPIOA->BSRR, GPIO_BSRR_BR_5);
 8000e5a:	f44f 1300 	mov.w	r3, #2097152	; 0x200000
 8000e5e:	f8c8 3018 	str.w	r3, [r8, #24]
        delay_ms(500);
 8000e62:	f44f 70fa 	mov.w	r0, #500	; 0x1f4
 8000e66:	f7ff feff 	bl	8000c68 <delay_ms>
        WRITE_REG(GPIOA->BSRR, GPIO_BSRR_BS_5);
 8000e6a:	f8c8 b018 	str.w	fp, [r8, #24]
        uint32_t start=systick_count;
 8000e6e:	f8d5 9000 	ldr.w	r9, [r5]
 8000e72:	f242 7410 	movw	r4, #10000	; 0x2710
             f=f*1.001;
 8000e76:	eddf 7a17 	vldr	s15, [pc, #92]	; 8000ed4 <main+0xf4>
                 f=1.0;
 8000e7a:	eeb7 8a00 	vmov.f32	s16, #112	; 0x3f800000  1.0
        for (int i=0; i<10000; i++)
 8000e7e:	3c01      	subs	r4, #1
 8000e80:	d0de      	beq.n	8000e40 <main+0x60>
             f=f*1.001;
 8000e82:	ee17 0a90 	vmov	r0, s15
 8000e86:	f7ff fb67 	bl	8000558 <__aeabi_f2d>
 8000e8a:	4632      	mov	r2, r6
 8000e8c:	463b      	mov	r3, r7
 8000e8e:	f7ff fbbb 	bl	8000608 <__aeabi_dmul>
 8000e92:	f7ff fe91 	bl	8000bb8 <__aeabi_d2f>
 8000e96:	ee07 0a90 	vmov	s15, r0
                 f=1.0;
 8000e9a:	eef4 7a68 	vcmp.f32	s15, s17
 8000e9e:	eef1 fa10 	vmrs	APSR_nzcv, fpscr
 8000ea2:	bfc8      	it	gt
 8000ea4:	eef0 7a48 	vmovgt.f32	s15, s16
 8000ea8:	e7e9      	b.n	8000e7e <main+0x9e>
 8000eaa:	bf00      	nop
 8000eac:	f3af 8000 	nop.w
 8000eb0:	9374bc6a 	.word	0x9374bc6a
 8000eb4:	3ff00418 	.word	0x3ff00418
 8000eb8:	20000000 	.word	0x20000000
 8000ebc:	10624dd3 	.word	0x10624dd3
 8000ec0:	e000e010 	.word	0xe000e010
 8000ec4:	e000ed00 	.word	0xe000ed00
 8000ec8:	08003740 	.word	0x08003740
 8000ecc:	200001f0 	.word	0x200001f0
 8000ed0:	47c35000 	.word	0x47c35000
 8000ed4:	3f8020c5 	.word	0x3f8020c5
 8000ed8:	08003748 	.word	0x08003748

08000edc <_read>:
	_kill(status, -1);
	while (1) {}		/* Make sure we hang here */
}