ResetISR adress not the same as were bootloader jump

[OM120]

hello,
I have a bootloader that load the adress of an application and jump to it.
as we can see here the adress of the resetISR is 0x600122b4

 

I would expect the adress of appEntry will be also 0x600122b4 but when i check it, it is 0x600122b5 yet it works and the jump happens.
I am trying to understand why it works and where did this offset of 1 come from

thanks

[jingpan · Accepted solution]

Hi @OM120 ,

It's correct. ARM spec stipulates that the jump address is the actual address +1.

Regards,

Jing