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flat assembler > DOS > mixing fasm and pascal

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avcaballero



Joined: 02 Feb 2004
Posts: 170
Location: Madrid - Spain
Hello, anyone can help about mixing fasm and pascal, Let's say:

Code:
; fasm AsmPF2.asm
format MS COFF
public WriteChar
section '.text'
main:
  WriteChar:
    PUSH   BP
    MOV    BP, SP
    MOV    AH, 02h
    MOV    DL, BYTE [BP+4]
    INT    21h
    MOV    SP, BP
    POP    BP
  RET        2
    


Code:
Program MixPascalFasm; (* TPAsmN2.pas *)
uses crt;
PROCEDURE WriteChar(Car: Char); External;
{$L AsmPF2.obj}
begin
  WriteChar('A');
  ReadKey;
end.
    


Well i don't need to say that it doesn't work. The error returned by pascal compiler is: "Invalid object file record (ASMPF2.OBJ)"

EDIT by DOS386 2009-10-21 : added {code} tags
Post 05 Sep 2009, 17:12
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 16664
Location: In your JS exploiting you and your system
Maybe Pascal would prefer a DLL file?
Post 05 Sep 2009, 17:50
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rugxulo



Joined: 09 Aug 2005
Posts: 2335
Location: Usono (aka, USA)
Uh, I would've guessed you're using FPC, but your asm is 16-bit (why???). Two obvious comments: FASM doesn't support OBJ/OMF needed by some older DOS Pascals, and also Pascal the language, in general, can probably do WriteChar natively (without needing asm).
Post 05 Sep 2009, 21:24
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avcaballero



Joined: 02 Feb 2004
Posts: 170
Location: Madrid - Spain
I wanted an easy example to mix fasm and turbo pascal (16 bits)… Well, no comments if FASM doesn't support OBJ, even with 32 bits coding
Post 07 Sep 2009, 07:07
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
This may help
http://diamondz.land.ru/hll/hll_eng.htm
If you read how they got round some of the problems, it may help you.
Post 07 Sep 2009, 11:45
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rugxulo



Joined: 09 Aug 2005
Posts: 2335
Location: Usono (aka, USA)
avcaballero, either use ObjConv (though probably only works for 32-bit) or switch to FPC or GPC or VPC.
Post 10 Sep 2009, 23:49
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DOS386



Joined: 08 Dec 2006
Posts: 1904
> avcaballero, either use ObjConv (though probably only works for 32-bit)

This had been discussed many times, Rugxulo advertising ObjConv 1'000'000'000 times, but indeed it is no help for 16-bit OMF creation

> or switch to FPC or GPC or VPC.

FPC uses COFF, so FASM's COFF or MSCOFF might help ...

For 16-bit OMF, the probably easiest solution is NASM.
Post 21 Oct 2009, 02:06
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