Uninitialized r2 in divmod_x32x32_unsafe without PICO_DIVIDER_DISABLE_INTERRUPTS

[andylinpersonal]

When the divmod_s32s32_unsafe and divmod_u32u32_unsafe is called without enabled PICO_DIVIDER_DISABLE_INTERRUPTS, ldr r2, =SIO_BASE will be bypassed. Later access to SIO_DIV will crash.

[lurch]

Is this the same thing as #2760 ?

[andylinpersonal]

Yes. I forgot to create the corresponding issue here 😂