Re: [Pgubook-readers] Stack Diagram confussion

[Alexander Kapshuk]

On Nov 23, 2017 17:02, "Ivan Nieto" <address@hidden> wrote:

In page 63, inside the 'All about functions' chapter, this diagram of the stack appears:

And for my understanding, and from my lecture of the code. I think that this diagram have the Base Number and Power attributes in reverse order. The stack should look like this:

Power           <--- 12(%ebp)
B, Number     <---  8(%ebp)
Ret Addr        <---  4(%ebp)
Old %ebp       <---   (%ebp)
Current Res    <--- -4(%ebp)

This is the code:

%ebx should contain the Base Number and %ecx should contain the power.

I just want to know if the way I am understanding this is correct.

Greetings.

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Yes, you did understand it correctly.

As an aside, local storage allocated on the stack to hold the result of multiplication may be omitted.

movl %ebx,%eax

...

Imull %ebx,%eax

The book probably mentions about that too.