Date: Wed, 4 May 94 09:46:26 -0400
From: dj AT ctron DOT com (DJ Delorie)
To: mcastle AT umr DOT edu
Cc: softbrek AT POOL DOT Informatik DOT RWTH-Aachen DOT DE, djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: ld and GCC-RM

> How does the !proxy method of passing command lines from stub.exe
> to go32.exe work?  Does it just pass a pointer to go32 that
> points back into stub.exe's address space where the info is located?  If

If the command line looks like this:

	!proxy <argc> <argvseg> <argvofs> <stubinfoseg> <stubinfoofs>

Then go32 will load that info instead of trying to pass along the
command line.  When libc calls system, it may generate a command line
like that with the data in the transfer buffer, so swapping would
toast it.  That's why stub uses spawn instead of exec to call go32.

> so, then this could be a source of problems:  Shell Room would
> swap that info out (well.. actually... go32.exe would over write
> it when it's loaded... but same net effect).  

Yup.

> I suppose this would also affect my suggestion of using one of
> the swaplib functions used in the dos-only port of gnu make a few
> years back.  

Yup.