Assembly Language & x86 Low-Level Systems Programming · Lesson

The Assemble, Link, and Run Toolchain

Follow an assembly source file from text to a running program: how the assembler, linker, and loader cooperate to turn mnemonics into an executable.

From Mnemonics to Machine Code

You write assembly in mnemonics like MOV and ADD, but the CPU only speaks binary machine code. The toolchain bridges that gap.

Step 1: the assembler translates each mnemonic into its machine-instruction bytes, producing an object file (.o or .obj).

nasm -f elf64 hello.asm -o hello.o