Simple example to demonstrate assembly on Linux x86_64.

Key points

• how define macros
• calling external functions (libc and libm in this case)
• IP relative addressing
• SSE for floating point operations
• .rodata (instead of .data) for constants
• shared libraries
• syscall
• CMake to drive NASM compilation

Building

Prerequisites

• CMake
• NASM
• Make or Ninja

Build

cd asm_nasm && cmake -S . -B build && cmake --build build

or by using "presets" (sets Ninja as build system)

cd asm_nasm && cmake --preset default && cmake --build build