Re: Pascal Calling Convention

[Shark8 <onewingedshark@gmail.com>]

On Mar 23, 6:43 pm, Yannick Duchêne (Hibou57)
<yannick_duch...@yahoo.fr> wrote:
> Le Thu, 24 Mar 2011 01:24:41 +0100, Randy Brukardt <ra...@rrsoftware.com>  
> a écrit:> This is news to me, and I wrote the pragma Import support in Janus/Ada.
> > Parameter passing in all of the Windows conventions (including C!) is
> > left-to-right. But perhaps whomever wrote that was confused by the fact  
> > that
> > the x86 stack grows downward, so the left parameter is the one at the
> > highest address on the stack. Even so, it is the first one pushed.
>
> While I read you, I can't avoid thinking you must be true, as this is the  
> only way to get variable number of parameters working for C. What is  
> confusing also, is that assembly program sometime use the stack as an  
> array : allocated room on the stack, and then do something looking like  
> [ebp+0] := ... [ebp+4] := ... and so on. But I feel to remember parameter  
> passing order for WinAPI is the reversed one than C. I will have a test  
> tomorrow to check (I am not running Windows right now).

Yes-ish.
In the 16-bit world [Win 3.11] WinAPI params were pushed with Left-to-
Right [Pascal convention];
in the 32-bit world Win32API params are pushed Right-to-Left (like C,
but with calee cleanup, like Pascal calling convention).

http://en.wikipedia.org/wiki/X86_calling_conventions