Re: Preview: portable dumper

[Eli Zaretskii]

> Cc: address@hidden, address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Thu, 1 Dec 2016 01:16:17 -0800
> 
>     Emacs never worked on that platform
> 
> Sure it did. Emacs worked until FreeBSD 11, when the arm64 port modernized 
> its memory-management implementation.

>From https://debbugs.gnu.org/cgi/bugreport.cgi?bug=24892#104

  Ed Maste wrote:
  > arm64 support was first available in a release in FreeBSD 11.0, without 
sbrk, and sbrk never existed on the stable/11 branch.

  Thanks, I didn't know that. So Emacs has never worked in this environment.

Doesn't that mean Emacs on arm64 was never available before FreeBSD
11, and sbrk never existed on FreeBSD/arm64?

>     they removed a certain library function, which happens to be called by 
> unexec.
> 
> This was no accident. They removed it because it was producing bogus values, 
> and it didn't reflect how FreeBSD actually allocates memory.

And they are thinking on bringing it back, see

  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=24892#92