ELF
a common standard file format for executable files, object code, shared libraries, and core dumps.
# Types
ELF files can have different types, such as:
- EXEC (Executable file)
- DYN (Shared object file), for libraries
- REL (Relocatable file), before being linked into an executable file
- CORE (Core dump file)
# Relocatable Object Files
| Sections | Descriptions |
|---|---|
.text | machine code of the compiled program |
.rodata | format strings or jump tables for switch … |
.data | Initialized global and static C variables |
.bss | Uninitialized global and static C variables, plus global or static variables initialized to 0, Do not occupy space |
.symtab | symbol table about functions and global variables that are defined and referenced in the program |
.rel.text | contains relocation information for the .text section |
.rel.data | relocation information for the .data section |
.debug | debugging symbol table |
.line | mapping between line numbers in the C and machine code instructions in .text |
.strtab | string table for symbol tables in .symtab and .debug |