Objdump

Objdump is a program in the GNU Binutils suite that analyzes binary files. It reads object files, executables, and libraries in formats such as ELF and COFF, and is commonly used on Unix-like systems.

The primary function of objdump is to disassemble machine code into human-readable assembly language for the architecture the binary targets. In addition to disassembly, it can display the file headers, symbol tables, relocation entries, dynamic linking information, and the contents of individual sections.

Typical usage includes options such as -d to disassemble code, -D to disassemble all sections, -S to show interleaved source lines when debugging info and source files are available, -t to print the symbol table, -h for section headers, -r for relocation entries, and -x for all headers. The -M option selects the disassembly flavor (such as Intel or AT&T syntax), -b specifies the binary format, and -m names the target architecture.

Objdump is maintained as part of the GNU Binutils project, developed by the Free Software Foundation. It is widely used by software developers, debuggers, and reverse engineers to inspect binaries, verify compilation results, and examine how routines and data are laid out.