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600564d4 <irq_handler>:
600564d4:       e92d503f        push    {r0, r1, r2, r3, r4, r5, ip, lr}
600564d8:       e59f4308        ldr     r4, [pc, #776]  ; 600567e8 <set_cpu_frequency+0xf8>
600564dc:       e5945104        ldr     r5, [r4, #260]  ; 0x104
600564e0:       e205501f        and     r5, r5, #31
600564e4:       e59f3300        ldr     r3, [pc, #768]  ; 600567ec <set_cpu_frequency+0xfc>
600564e8:       e7933105        ldr     r3, [r3, r5, lsl #2]
600564ec:       e12fff33        blx     r3
600564f0:       e3a03001        mov     r3, #1
600564f4:       e1a05513        lsl     r5, r3, r5
600564f8:       e5845118        str     r5, [r4, #280]  ; 0x118
600564fc:       e8bd503f        pop     {r0, r1, r2, r3, r4, r5, ip, lr}
60056500:       e25ef004        subs    pc, lr, #4