mixing fasm and pascal

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avcaballero

Joined: 02 Feb 2004
Posts: 203
Location: Madrid - Spain

avcaballero 05 Sep 2009, 17:12

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

05 Sep 2009, 17:12

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20430
Location: In your JS exploiting you and your system

revolution 05 Sep 2009, 17:50

Maybe Pascal would prefer a DLL file?

05 Sep 2009, 17:50

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 05 Sep 2009, 21:24

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).

05 Sep 2009, 21:24

avcaballero

Joined: 02 Feb 2004
Posts: 203
Location: Madrid - Spain

avcaballero 07 Sep 2009, 07:07

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

07 Sep 2009, 07:07

Dex4u

Joined: 08 Feb 2005
Posts: 1601
Location: web

Dex4u 07 Sep 2009, 11:45

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.

07 Sep 2009, 11:45

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 10 Sep 2009, 23:49

avcaballero, either use ObjConv (though probably only works for 32-bit) or switch to FPC or GPC or VPC.

10 Sep 2009, 23:49

DOS386

Joined: 08 Dec 2006
Posts: 1903

DOS386 21 Oct 2009, 02:06

> 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.

21 Oct 2009, 02:06

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