I'd like to read some section data during dynlink.c

Does anyone have any good suggestions on the best way to do so?
I believe most ELF files ask for the load to start from the start of the ELF file.

I see in dynlink.c the kernel sends AT_PHDR as an auxiliary vector --

Should I try applying a fixed offset from it to get to the start of the ehdr ?

Any advice is appreciated.

Please include me in the CC for the reply.
I can't recall if I've subscribed.