[fpc-devel] win64 calling convention

[luiz americo pereira camara]

2012/11/29 Martin <lazarus at mfriebe.de>:
> Just to confirm my observations. (again trying to get pascal script to work)
> 64 bit windows
>

Recently, i faced similar situation (porting assembly to  64bit).

You can look there how i managed:

http://lazarus-ccr.svn.sourceforge.net/viewvc/lazarus-ccr/components/virtualtreeview-new/branches/4.8/include/intf/win32/vtgraphicsi.inc?r1=2543&r2=2544

You can take into account also that Win64 is different from non windows

See that i needed to ifdef in qt:

http://lazarus-ccr.svn.sourceforge.net/viewvc/lazarus-ccr/components/virtualtreeview-new/branches/4.8/include/intf/qt/vtgraphicsi.inc?r1=2534&r2=2548

Luiz

> procedure FOO(Sender: TSynEdit; const M: String; const P1, P2: TPoint);
>
> "const P1, P2: TPoint" versus "P1, P2: TPoint"
>
> if "const" is NOT used, then TPoint is put into a register
> if "const" is used, then TPoint is in mem, and the register is a reference.
>
> Is that right?  (I know the doc says, no assumption, and can be ref or
> value)
>
>
>
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