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From: jfh@killer.UUCP (The Beach Bum)
Newsgroups: comp.lang.c
Subject: Re: Accessing argc & argv from a functi
Message-ID: <1260@killer.UUCP>
Date: Fri, 31-Jul-87 18:34:39 EDT
Article-I.D.: killer.1260
Posted: Fri Jul 31 18:34:39 1987
Date-Received: Sun, 2-Aug-87 09:44:46 EDT
References: <420@sugar.UUCP> <39@flmis06.ATT.COM>
Organization: Big "D" Home for Wayward Hackers
Lines: 35
Summary: rewrite /lib/crt0.o or whatever the linker uses to call main.

In article <39@flmis06.ATT.COM>, mikel@flmis06.ATT.COM (Mikel Manitius) writes:
> > In article <28700015@ccvaxa>, aglew@ccvaxa.UUCP writes:
> >> In standard C you cannot get access to argv/argc/envp without doing work
> >> in main().
> 
> Well, I think we may have lost track of the initial problem.
> 
> However I am still looking for a way to get at "argc" and "argv" from
> a function when I don't have access to "main". getenv() and putenv()
> gets it from somewhere...
> 
> As far as the rest of the above mentioned functions, you will need to
> have the args (or at least create your own) first, before you can pass
> them on...
if one looks at the code for /lib/crt0.o (and friends on unix, god
only knows what on Messy-DOS :-) you will see that the run-time start
up code saves the address of the environment there.  why not just add
a few lines to do the dirty work there?  (the answer is of course,
how many of us have the source to /lib/crt0.o :-(.

ms-dos is one up here.  my understanding is that most C compilers for
ms-dos include the source to the startup routine, which happens to
be written in C for the machines i've seen.  has anyone written a
public domain C startup that also is written in C and only needs
alittle munging on?

(you are not going to hear me utter the word `disassemble' at any
time in this discussions ...)

- john
-- 
John F. Haugh II		HECI Exploration Co. Inc.
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