From: brendan AT jove DOT acs DOT unt DOT edu (Matthew Brendan Grantz)
Newsgroups: comp.os.msdos.djgpp
Subject: Help with COFF & __main
Date: 2 Jun 1997 00:44:35 GMT
Organization: University of North Texas
Lines: 18
Message-ID: <5mt51j$ihf@hermes.acs.unt.edu>
NNTP-Posting-Host: jove.acs.unt.edu
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

The DXE routines that came with DJGPP are, at best, incomplete, and I
have been writing some of my own. Unfortunately, I know little about
what I am doing, and most of what I have done is through trial and
error. I have managed to make a program that will open a DJGPP COFF,
extract all the functions, and relocate them. All except for one, that
is: main(). It requires the relocation of a relative symbol called
__main. This symbol can easily be aquired by including a line in the
loading program, something like

extern unsigned __main;

But using this as a relocation pointer doesn't work. Using a pointer to
this as a relocation doesn't work. As the matter of fact, I can't
manage to fudge this into functioning. Is it POSSIBLE to execute the
main() function in a .O file by loading  and relocating it?

					-Matt
					 brendan AT jove DOT acs DOT unt DOT edu