Y86 Sequential

Calling coventions

• Parameter passing
• Caller-save registers (e.g. %rcx)
  • Functions may do whatever they want to these registers
  • If caller wants to keep the value, it needs to save it to memory before calling
• Callee-save regsiters (e.g. %rbp)
  • Functions can rely on these registers not changing
  • If function uses %rbp, it will need to save the value and restore it before returning