That's the wonderful library, and it helps me a lot in my work. I'm really interested in how the function
user_code_insert_to_systick_handler() gets injected into the user-defined
SysTick_Handler() without modifying user code.
The systick_wrapper_ual.s defines a proc
$Sub$$SysTick_Handler which calls
$Super$$SysTick_Handler (which refers to user-define
SysTick_Handler()). After I looked at the mapping file I found
$Sub$$SysTick_Handler is inserted into the vector table instead of the user-defined
This symbols containing $ and | look like black magic to me, and I couldn't find any description of it in the "Armasm User Guide." It would be helpful if could direct me to the documentation that describes this underlying machinism.