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cobjdumpdisassembly

Disassembly of sections in a c program

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?

Solution

  • 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.