Disassembly of sections in a c program [closed]

Question

I wrote a very basic Hello World program to know about sections. After using objdump I got all sections. I am using ubuntu 12.04.

in output I found it like that :

1. Disassembly of section .init

2. Disassembly of section .plt

3. Disassembly of section .text

4. __do_global_dtors_aux

5. Disassembly of section .fini

I want to know what those sections are? what data they store? Specially .plt and .fini. About .init and .text I can guess, but what about others?

Answer 1

You should google it : here is the first result. It's a good start to learn more about ELF format.

About .init and .fini, it's here.

Here is a list of the ELF sections with a brief description.