Anatomy of a Stack Frame

A stack frame is the slice of stack owned by one function call.

• Return address — pushed by the caller's call.
• Saved RBP — the caller's frame pointer, saved in the prologue.
• Saved registers — callee-saved registers the function will clobber.
• Local variables — addressed relative to RBP or RSP.
• Outgoing arguments — extra args for functions this one calls.