Suppose we were to call a procedure named ProcOne, passing it two value parameters. The procedure adds the two parameters and returns their sum in EAX:

push 5

push 10

call ProcOne ; EAX = sum

Create the implementation of ProcOne, using explicit stack parameters (such as [ebp+n]). Follow other common conventions regarding the saving and restoring of registers. Restore the stack pointer using the STDCALL calling convention, and assume a 32-bit memory model.