Access symbols defined in the linker script by application

Question

In my linker script file, I have defined two symbols

define symbol _region_RAM_start__     = 0xC0000000;
define symbol _region_RAM_end__       = 0xC00fffff;         


        

Answer 1

Below code should works as expected:

extern const volatile unsigned int _region_RAM_start__;

extern const volatile unsigned int _region_RAM_end__;

....
int GetRAMSize()

{

int size = 0;

unsigned int address_1 = &_region_RAM_start__;

unsigned int address_2 = &_region_RAM_end__;

size = address_2 - address_1 + 1U;

return size;

}