Why does IA-32 have a non-intuitive caller and callee register saving convention?

Question

The common calling conventions for IA-32 say:

• Callee-save registers
%ebx, %esi, %edi, %ebp, %esp
Callee must not change these.  (Or restore the caller\'s v         


        

Answer 1

In short, caller save are because of argument passing. Everything else is callee save.