Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!brunix!rcb
From: rcb@cs.brown.edu (Robert Boyer)
Newsgroups: comp.os.mach
Subject: Need help with load interface
Message-ID: <54925@brunix.UUCP>
Date: 31 Oct 90 03:13:57 GMT
Sender: news@brunix.UUCP
Reply-To: rcb@cs.brown.edu (Robert Boyer)
Organization: Brown University Department of Computer Science
Lines: 42

I'm having some trouble getting the programmable loader interface
working on our pmax OSF/1 (snapshot 5) system.  No matter what I try,
the "load" system call always returns with 0 and EINVAL in errno.  As
far as I can tell, I am following almost exactly the example in
section 3.3.1 of the "OSF/1 Applications Programmer's Guide - SNAPSHOT
5".

here is the code fragment that fails:

int load_it() 
{
   ldr_module_t hdl;
   ldr_load_flags_t flags=0;
   void (*p)();

   if ( (hdl = load( "./foo",flags)) <= 0 ) {
      perror("load error");   
      return -1;
   } else {
      p = ldr_lookup(hdl, "foobar" );
      (*p)();
      return 0;
   }   
}


"./foo" was compiled with -mpic as follows:

cc -mpic -c foo.c
as: Flag option -G has already been seen!
ld -warn_nopic -o foo foo.o


The module foo.c is:

foobar() {
	return 1;
}



Any help would be greatly appreciated.