Hello World in Assembly

Dipping my feet into programming at a lower level of computer architecture by understanding and writing hello world in x86 assembly.

It's really interesting to see how programming closer to the CPU is different to higher level languages I'm familiar with.

All explanations are above the code in the hello_world.asm file. Comments are also present throughout the code itself.

Compilation and Usage

This is also outlined in the preamble before the code, but:

• To assemble (using nasm 32-bit, sudo apt install nasm on debian based systems):

nasm -f elf32 -o hello_world.o  hello_world.asm

• To link (using ld, but you could use gcc instead if you wish):

ld -m elf_i386 -o hello_world hello_world.o

• To run, in the terminal:

./hello_world

That should yield Hello World!.

Screenshot: