argc/argv

argc/argv

[glburt]

I am trying to build a system that needs to pick up the command line arguments.  However, it seems there are two ways to do it.

The old way is that argc and argv elements are on the stack.

Using gcc 3.4.3, the argc is edi and the pointer for argv is in esi, according to the times that I have tried it.  

Is this correct????

Gary Burt

Re: argc/argv

[Marcin Kościelnicki]

> I am trying to build a system that needs to pick up the command line
> arguments.  However, it seems there are two ways to do it.

No, there's only one.

> The old way is that argc and argv elements are on the stack.

And that's the correct way.

> Using gcc 3.4.3, the argc is edi and the pointer for argv is in esi,
> according to the times that I have tried it.
>
> Is this correct????

No. Maybe argc really is in edi and argv in esi, but it can change anytime. 
Without warning. You shouldn't ever depend on it. Also, I believe this 
behavior should be attributed to both glibc and gcc (and therefore can change 
when version of either changes).

Marcin Ko≈õcielnicki




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