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From: Shark8 <onewingedshark@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Pascal Calling Convention
Date: Wed, 23 Mar 2011 19:04:45 -0700 (PDT)
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On Mar 23, 6:43=A0pm, Yannick Duch=EAne (Hibou57)
<yannick_duch...@yahoo.fr> wrote:
> Le Thu, 24 Mar 2011 01:24:41 +0100, Randy Brukardt <ra...@rrsoftware.com>=
 =A0
> a =E9crit:> 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=
 =A0
> > 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=
 =A0
> only way to get variable number of parameters working for C. What is =A0
> confusing also, is that assembly program sometime use the stack as an =A0
> array : allocated room on the stack, and then do something looking like =
=A0
> [ebp+0] :=3D ... [ebp+4] :=3D ... and so on. But I feel to remember param=
eter =A0
> passing order for WinAPI is the reversed one than C. I will have a test =
=A0
> 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