> How did you call a function if you didn’t have a stack for the return address or local variables? Here’s how it worked. First, the compiler defined a secret g

> How did you call a function if you didn’t have a stack for the return address or local variables? Here’s how it worked. First, the compiler defined a secret global variable for each inbound function parameter, plus another secret global variable for each function to hold the return address. It also defined a secret global variable for each of the function’s local variables. I always assumed that functions did something like this behind the scenes. At the lowest level, all of memory is just a very large, globally-accessible array of numbers. Functions are just JMPs with fancy syntax sugar. ...is that completely wrong? Do modern computers actually have some type of hardware support for functions?