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Re: libtcl8.5.dll collides with Cygwin DLL by default
Chris? Ping?
On Mar 19 18:52, Corinna Vinschen wrote:
> On Mar 19 12:52, Christopher Faylor wrote:
> > On Mon, Mar 19, 2012 at 10:59:09AM +0100, Corinna Vinschen wrote:
> > >Chris? Ping?
> > >
> > >On Mar 15 10:12, Corinna Vinschen wrote:
> > >> On Mar 14 20:50, Yaakov (Cygwin/X) wrote:
> > >> > On 2012-03-08 03:12, Corinna Vinschen wrote:
> > >> > >The assumption that the Cygwin DLL has a given size and will never
> > >> > >change is flawed. How are we supposed to add new functionality if the
> > >> > >DLL has to stick at a certain size? And even using another GCC can
> > >> > >easily change the size of the DLL, given changes in code generation.
> > >> >
> > >> > Improving rebase is great, but should something be done to fix
> > >> > compute_dll_image_base(), perhaps change the base to 0x61800000 to
> > >> > give plenty of room for Cygwin?
> > >>
> > >> I think that's a good idea. But 0x61800000 is a bit much, I think. The
> > >> most important factor for the bigger size of the Cygwin DLL was the
> > >> raise of the cygheap from 512K to 2 Megs. This won't happen anymore for
> > >> a loooooong time. Therefore, 0x61600000 should be more than enough for
> > >> a while. That gives us another 2 Megs for other DLLs.
> > >>
> > >> What do you think, Chris? Is that worth a new binutils?
> >
> > I saw the comment. I've never looked at the code in question so I didn't
> > have a ready answer.
>
> I think a new binutils would be a good thing, with the start address in
> ld/emultempl/pe.em, function compute_dll_image_base, changed from
> 0x61300000 to 0x61500000 or 0x61600000 so that the default base for DLLs
> doesn't potentially colide with the bigger cygheap.
>
> Looking once more into that, I think 0x61500000 is sufficient. In
> 1.7.11 the end address of the cygheap is 0x61480000, it's size 0x20f000,
> in the most recent snapshot it's 0x61480000 as well, it's size 0x20e000.
> That means, if we choose 0x61500000, we have still 184K room for
> extension. Since we don't raise the size of the cygheap anymore, that
> should be more than enough for a while...
>
>
> Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
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