[TUHS] Emacs and undump

[Nick Downing]

Thanks for the stak.c it's a good idea. I'm not sure about the stack
freeing routine at the end of the file as it seems to rely on a bit of
pointer voodoo but I think I could rationalize all that.
cheers, Nick

On Feb 28, 2017 1:33 AM, "Derek Fawcus" <dfawcus+lists-tuhs at employees.org>
wrote:

> On Mon, Feb 27, 2017 at 07:12:09PM +1100, Nick Downing wrote:
> > I've been having a bit of trouble with /bin/sh (Bourne's original one)
> > for the same reason.
>  [snip]
> > Trouble is, this makes a non-stdio-using program be
> > stdio-using, in the worst case it's a non-stdio-using program that has
> > its own malloc() based on sbrk()... so we get another malloc()
> > happening in the middle, I temporarily fixed this by redirecting the
> > modern system's malloc() into the ancient system's malloc() but this
> > is a very non desirable solution. As another possibility I was
> > thinking of changing the ancient system's sbrk() into realloc() and
> > implementing a routine to relocate the heap, it obviously would have
> > to understand everything on the heap and everything that can point
> > into it.
>
> How about applying Geoff Collyer's change to the shell memory management
> routine available here:
>
>     http://www.collyer.net/who/geoff/stak.port.c
>
> DF
>
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