CS61C@UCB | Computer Architecture

HD: Memo Hierarchy

SW: Process, Thread, Program Memory

Here “a program” means a running C program (with the main function as the entrance)

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Compiler Stages * 5

1. lexical analysis: source code → tokens
2. syntax analysis: analyzed tokens structures → AST (Abstract Syntax Tree)
3. semantic analysis
4. intermediate code generation
5. code optimization & code generation

G++ Example: GCC Compilation Process

GCC and Make - A Tutorial on how to compile, link and build C/C++ applications

library linking

• static - in the form of .a or .lib (in windows), machine code is copied into the executable.
• dynamic (shared library) - .so or .dll files. Only a small table of machine code is copied into the executable, and one copy of the precompiled library serves all running programs.