IT Services Circle
Jun 5, 2026 · Fundamentals
Step‑by‑Step: How a Program Is Loaded and Executed by the OS
The article explains how an executable file is located, parsed (e.g., ELF), loaded into memory, divided into code, data, heap and stack regions, how dynamic libraries are placed, and how the OS uses the entry‑point address to start the CPU executing the program.
ELFentry pointexecutable
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