compiling simple windows app

[xie jason]

hi all,
       I was trying to compile a simple windows
application using winelib. it crashs and returns:
err:seh:setup_exception stack overflow 12 bytes in
thread 0009 eip 60169224 esp 00230ff4 stack
0x231000-0x340000

I first convert a .dll, which contains a simple add
function (int add(int a, int b)) to be .dll.so. And
then I compile a simple program which calls this
function. I am able to compile it properly. but when i
run it, it shows above error message. 
-----------------.h is ------------------------------ 
int __stdcall add(int a, int b);

----------------.c is----------------------------
HMODULE hDLL=0;	/* DLL to call */

#ifdef __i386__
#define GET_THIS(t,p) t p;\
__asm__ __volatile__ ("movl %%ecx, %0" : "=m" (p))
#endif


BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD
fdwReason, LPVOID lpvReserved)
{
	TRACE("(0x%p, %ld,
%p)\n",hinstDLL,fdwReason,lpvReserved);

	if (fdwReason == DLL_WINE_PREATTACH) return FALSE;	/*
prefer native version */

	if (fdwReason == DLL_PROCESS_ATTACH)
	{
		hDLL = LoadLibraryA( "libjason.dll" );
        printf("load dll\n");
		TRACE(":Forwarding DLL (libJason.dll) loaded
(%ld)\n",(LONG)hDLL);
	}
	else if (fdwReason == DLL_PROCESS_DETACH)
	{
		FreeLibrary( hDLL );
		TRACE(":Forwarding DLL (libJason.dll) freed\n");
	}

	return TRUE;
}

int add(int a, int b)
{
	int (*pFunc)(int, int);
	int retVal;
	pFunc=(void*)GetProcAddress(hDLL,"vgMath");
	TRACE("((int)%ld,(int)%ld):
forward\n",(LONG)a,(LONG)b);
	retVal = pFunc(a,b);
	TRACE("Returned (%ld)\n",(LONG)retVal);
	return retVal;
}
------------------------.spec is --------------------
1 stdcall add( long long ) vgMath

can any one help me?

thanks

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