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Index > Windows > Help with a C callable dll

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madmatt



Joined: 07 Oct 2003
Posts: 1045
Location: Michigan, USA
madmatt
I have a dll written in assembly and trying to make it c-callable, It works correctly except I don't think the stack is geting cleaned up properly. Does anyone know what I'm doing wrong? Or is it a macro problem? The test code is below, The executable is c code, and the dll is assembly. It uses my own custom includes, but the example is very small and should convert to standard fasm include format very easy. The code is below.


Last edited by madmatt on 06 Dec 2006, 21:11; edited 2 times in total
Post 06 Dec 2006, 18:57
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LocoDelAssembly
Your code has a bug


Joined: 06 May 2005
Posts: 4633
Location: Argentina
LocoDelAssembly
Your C program is assuming that your DLL proc is stdcall. Make your DLL stdcall too or try to fix your C environment. IMHO it's better to use stdcall in the DLL
Post 06 Dec 2006, 19:23
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madmatt



Joined: 07 Oct 2003
Posts: 1045
Location: Michigan, USA
madmatt
Hey thanks! Very Happy Changed "proc c ...." to "proc stdcall ..." and everything works. Cool

[EDIT] Corrected version in the first post. [END EDIT]
Post 06 Dec 2006, 21:04
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LocoDelAssembly
Your code has a bug


Joined: 06 May 2005
Posts: 4633
Location: Argentina
LocoDelAssembly
Note that stdcall is the default so you can pass from "proc c ...." to "proc ...." if you want.
Post 07 Dec 2006, 01:40
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RedGhost



Joined: 18 May 2005
Posts: 443
Location: BC, Canada
RedGhost
There is nothing wrong with having stdcall but if it's purely for C, C/cdecl is the default type for C functions and if you're compiler is assuming the functions are stdcall you have default calling convention set to stdcall. Anyways you should probably declare procedures with "type convention name( ... )" if it's in a Windows environment, even if they are cdecl.

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Post 08 Dec 2006, 11:35
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