About the start address and length of "_DATA_GROUP_"

Now, I want to know the start address and length of "_DATA_GROUP_", How can I do it, thanks.
About the start address and length of "_DATA_GROUP_"

Now, I want to know the start address and length of "_DATA_GROUP_", How can I do it, thanks.
How to get the start and end address of _DATA_GROUP_ in C program?

As title.
How to get the start and end address of _DATA_GROUP_ in C program?

As title.
Placing program length in code

I have a bootloader that I am trying to write and I'm not sure how to go about having program size, in bytes, coded somewhere in the images it tries to load. Basically, I want to read the app code...