[fpc-pascal]Minimum size of parameters

[Aitor Santamaria Merino]

Hi,

I explain the problem, then my solution, then my questions:
(Platform: GO32V2, although I think it could be independent)

Problem: if I have a record like this:
RECORD
      Pt: PointerToCertainProcedure;
      Sz: SizeInBytesOfProcedureArgs;
      Arg: PointerToARecordContainingArgs;
END;
then I would like to make a Call procedure to interpretate this all. The 
parameters of the procedures and the record containing args specify both 
in the same order.

My solution (briefly):
(a) typecast the RecordContainingArgs to an ARRAY OF WORD (using 
pointers, etc.)(why?  because it seems that I can only PUSH words!)
(b) push that array REVERSING the order
(c) ASM_CALL the procedure
It worked.

Notes:
I noted that I typecasted to words because inline ASM did only allow me 
to push WORDs.
I have also discovered the following "funny" behaviour of calls when I 
have to use BYTES:

{This works!!}
{$ASMMODE Intel}
VAR
    Par1, Par2: word;

BEGIN
      Par1 := 1;
      Par2 := 2;
      ASM
         PUSH Par2
         PUSH Par1
         CALL P
      END
END.

Where P is a PROCEDURE (a,b: BYTE);
ATTENTION: I push WORDS and P "pops" BYTES!

Questions:
For which kind of basic bytes should I expect such behaviour?
(boolean?,)
How are STRINGS popped? will this trick of reversing parameter data work?
If the answer to the previous was NO, then do you have another idea to 
solve my initial problem, execute this:
RECORD
      Pt: PointerToCertainProcedure;
      Sz: SizeInBytesOfProcedureArgs;
      Arg: PointerToARecordContainingArgs;
END;

Aitor