[Lazarus] PascalScript on Win x64

[Martin]

On 04/09/2012 13:24, Alexander Hofmann wrote:
> Hi there.
>
> This is a cross-post (cross-mail ?) to 
> http://www.lazarus.freepascal.org/index.php/topic,17978.0.html as I 
> got the hint there that it might be better to ask on the list instead 
> of in the forum, at least concerning the calling conventions - but 
> I'll ask the whole lot, anyway; I hope that's ok.
As Vincent pointed out. FPC mailinglist.

>
> Interestingly, when I start debugging 
> <SomeClass>.Create(aOwner:TComponent)-Type of Constructors, there is 
> some difference in the Register values, depending on whether the 
> Constructor was called from "pure" FPC-Code or the Script (at least so 
> it seems):
> o Called from FPC: rcx: 0 (nil), rdx: Class Reference, r8: Value of aOwner
> o Called from Script: rcx: Class Reference, rdx: 1 (!?), r8: Value of 
> aOwner (at least so it seems)
>
> Is there any difference in the calling convention on x64-Systems 
> between Delphi and Lazarus? I could only find the "standard" 
> information on Windows x64 calling conventions, without special care 
> of constructors, if there is any...
>

You will be able to get an answer about the calling convention fpc uses 
(They should be standard)

But you can then check yourself in x64.inc what PascalScript does.


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