Vitus Jensen wrote:
> On Sat, 06 Oct 2007 16:46:09 +0200, "Danny Backx" said:
>> On Fri, 2007-10-05 at 22:26 +0200, Vitus Jensen wrote:
>>>
>>> I'm trying to port a small testprogramm from embedded Visual C 4 to
>>> mingw32ce (cegcc-mingw32ce-0.50-1.i586.rpm). It's text mode, 2 threads,
>>> some printf, some files, nothing fancy but ... it has to use 2 object
>>> libraries (3rd party) and a DLL (my own).
>>>
When you object libraries, you mean, non-dlls, static libs? Try playing with
the order of libs in the link command. You could also try to convert those libs
into a dll, to be sure that no wrong function is being picked up by the linker.
>>> I'm able to compile and link this programm but when I call the 3rd party
>>> library an important call fails. It's the only call with several
>>> parameters so I suspect different calling conventions.
>>>
>>> Goes like this:
>>>
>>> extern int libconfig(int hd, int subfct, void * parameter);
>>>
>>> test()
>>> {
>>> hd = libopen();
>>> res = libconfig(hd, 1, (void *)0815);
>>> res = libconfig(hd, 2, (void *)15);
>>> ...
>>> libclose(hd);
>>> }
>>>
>>> Result code indicates "invalid subfunction" :-(
>>>
What does "invalid subfunction" mean? Are you sure the libopen
call succeded? What about other functions in the lib with several
parameters? Can you test any? Does the lib have a function to list
the "valid subfunctions"?
Since you have eVC access, could you do a stub lib that replaces that
third party lib, that exports the same function, but just prints the
parameters? That way, you can be sure that the lib is seing
the correct parameters, and invalidates/validates the calling
conventions argument.
Cheers,
Pedro Alves
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