Memory Layout of a Process

• Once loaded, the process (currently on linux, x86) has the following layout in memory.
• 
  • The text segment contains the executable machine code.
    • He claims that this is read-only so no self modifying code.
    • :)
    • This may be sharable, since many processes may be running the same code
    • Think bash, or cstdlib
  • The initialized data segment
    • The home of static and global variables that are initialized at compile time.
  • The uninitialized data segment
    • Global and static variables that are not initialized at compile time.
    • All values are initialized to 0
    • This section exists to save disk space in executables.
  • The heap
    • the source of memory from brk, malloc and new.
    • Grows up.
  • The stack
    • function activation records and local variables for functions.
    • Grows down towards the heap.