Gecko64 status

[Octavian Voicu]

On Mon, Jun 7, 2010 at 10:38 AM, Maarten Lankhorst
<m.b.lankhorst at gmail.com> wrote:
> I cannot find it the reference for it at the moment, but I remember
> that by default the stack is in memory < 4gb on 64-bits too, unless
> you did something. I wish I could remember how you could override the
> behavior, but this could be why it won't run in wine, but will in
> windows.
>
> For a stack variable:
>
> Wine64:
> &a = 0x7F9E9381FCDC
> Win64:
> &a = 0x22FE7C
> win64_32:
> &a = 0x28FF44

Seems stack is always at higher addresses and heap at lower ones. The
only sysctl which seems to affect this is kernel.randomize_va_space,
but it won't change virtual address very much.

$ sudo sysctl kernel.randomize_va_space=0
kernel.randomize_va_space = 0
$ cat /proc/self/maps | grep 'stack\|heap'
0060f000-00630000 rw-p 00000000 00:00 0                                  [heap]
7ffffffea000-7ffffffff000 rw-p 00000000 00:00 0                          [stack]
$ sudo sysctl kernel.randomize_va_space=2
kernel.randomize_va_space = 2
$ cat /proc/self/maps | grep 'stack\|heap'
00b6d000-00b8e000 rw-p 00000000 00:00 0                                  [heap]
7fff8676f000-7fff86784000 rw-p 00000000 00:00 0                          [stack]

Or are you talking about a wineloader kind of option?

Octavian