From:	Bernhard Stiftner <stiftnersoftwareNOstSPAM AT gmx DOT net DOT invalid>
Subject:	Re: Using libraries in a DLX (?)
Newsgroups:	comp.os.msdos.djgpp
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Date:	Sat, 10 Jun 2000 07:39:24 -0700
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

I've tried out what you suggested and downloaded SEAL (nice
thing!)
I am no longer having problems with libraries in DLX
modules, but I discovered 2 new problems:
- My DLX loader can't execute an exported function of my
DLX module (it leads to a general protection fault [but I'm
using Windows, so I'm used to that;-)...])
I can call my routine in the LibMain procedure of my DLX,
for example:
DLX_FN void testproc(void) { /* do something */ }; DLX_EF
lib_begin ( void ) {
  if ( ap_process == AP_ALLOC ) {
    AP_EXPORTLIB();
    };
  if ( ap_process == AP_INIT ) {
    testproc(); /* works perfectly */
    };
} lib_end;
but I can't import "testproc" to my DLX loader like this:
typedef void (*FUNC)();
hdlx_t myd1;
int main(void)
{
        DLXImport(_LIBEXPORTTABLE);
        myd1 = DLXLoad("tstdlx.dlx", "");
        ((FUNC)DLXGetEntry(myd1,"testproc"))(); /* GPF!!! */
        DLXUnload(myd1);
}

- and a second problem: "extended DLX" does not support C++:
If I try to generate a DLX from an C++ object file (i.e.
when the file extension is .cpp or .cc or when I'm using
GPP instead of GCC), DLXGEN can't create a DLX ("Error:
input file has more than one section; use -M for map").
Is there a way to make DLXGEN C++ compatible???

Finally a tiny bug correction for SEAL's DLX.H file:
please use
#define app_end                             } DLX_EF
#define app_main ap_begin
#define app_begin(_x)                       \ /*...*/
and
#define lib_end                              } DLX_EF
#define lib_main lib_begin
#define lib_begin(_x)                        \ /*...*/
instead of declarations without DLX_EF since one "}" is
missing when compiling a C++ file with it [this bug is so
tiny that my correction suggestion could be regarded
as "cosmetic"]...

Thanks in advance...


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