The addresses and size of a section can be referenced by using section address operators.
__sectop ("<section name>"): References the start address of <section name>
__secend ("<section name>"): References the sum of the size of <section name> and the address where <section name> starts.
__secsize ("<section name>"): References the size of <section name>
The INITSCT function in the resetprg.c file of the startup routine executes transfer from ROM to RAM and initialization of uninitialized areas. The addresses acquired by __sectop and __secend written in the dbsct.c file are referenced during execution.