request for some information amd64 status

Paul Allen pallen at
Tue Oct 4 18:48:35 PDT 2005


What does this mean for the available address space of
32-bit programs?

Is the top of stack normally at 3GB or 4?

Where does one set MAXDSIZ, MAXSSIZ, etc for 32 bit programs
running under an amd64 kernel?


>From Peter Wemm <peter at>, Tue, Oct 04, 2005 at 05:24:36PM -0700:
> On Thursday 29 September 2005 11:41 am, Paul Allen wrote:
> > 1) Is it possible to build 32-bit binaries yet?
> Yes, but only if you're inside a 32 bit chroot or jail, or if you're 
> willing to go to a lot of pain with compiler flags and switches.
> > 2) Is it possible to run a FreeBSD-4/386 jail inside an amd64
> >    environment?
> Yes.  We do this at work, but I don't recall if there were changes 
> needed.
> -- 
> Peter Wemm - peter at; peter at; peter at
> "All of this is for nothing if we don't go to the stars" - JMS/B5

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