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Date: Mon, 11 Jul 2005 08:42:12 -0700 (PDT)
Message-Id: <200507111542.j6BFgCg7017159@celerio.ucdavis.edu>
To: cygwin AT cygwin DOT com
Subject: Re: How to add 4K of scratch space at the bottom of the stack using  C instead of C++?
From: "Yu-Cheng Chou" <cycchou AT ucdavis DOT edu>
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> > Hi,
> > In order to dynamically load cygwin1.dll with VC, I need to add 4K of
> > scratch space at the bottom of my stack.
> >
> > The winsup/testsuite/cygload/cygload.cpp shows how to do it using C++.
> 
> I believe it's cygload.cc...
> 
> > How can I add the scratch space using C rather than C++ in a simplest
> > way?
> 
> I'm afraid it won't be very simple, but how about something like
> 
> int main(int ac, char *av[]) {
>     char padding[4096];
>     backup_lower_stack();
> 
>     ...
> 
>     restore_lower_stack();
>     return ...
> }
> 
> with backup_lower_stack() and restore_lower_stack() adapted from the
> cygwin::padding constructor and destructor, respectively (the vector can
> be replaced by a malloc'ed piece of memory).
> 
> However, you'll also need to write a C interface to cygwin::connector.
> Once you have this working, I would strongly urge you to submit the code
> to Cygwin.

By the way, the Makefile shows that the MSVC compiler is in 
C:/cygwin/usr/local/tools/i686_win32/vc7/Vc7. 
Is it a package that is provided by cygwin? Or is it the MSVC software 
that is installed in that directory?

Thanks 


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