32/64bit KSE issues?

[John Baldwin]

On Saturday 31 March 2007 03:16, Andriy Gapon wrote:
> on 31/03/2007 05:23 Daniel Eischen said the following:
> > On Fri, 30 Mar 2007, David E. Cross wrote:
> > 
> >> I recently ran into a problem where the 32bit JVM won't run on a 64bit host. 
> >> I, and at least one other person in -java thinks it has to do with 32 bit KSE 
> >> on a 64bit kernel (I have a vague memory on this somewheres WAY back).  Is 
> >> this still the issue?  Could someone point me in the general direction of the 
> >> specifics of the problem (if they exist, if not, I may try to create a 
> >> simpler test case then java)?
> >>
> >> I tried a few searches, but nothing matching what I remembered came up.
> > 
> > No, you can't run 32-bit libpthread on 64-bit kernel.  There
> > are no compatiblity hooks in the kernel to handle 32-bit kse
> > interfaces.  It is really too messy to provide it.
> 
> 
> Daniel,
> 
> maybe you can send a followup to the following ?
> http://www.freebsd.org/cgi/query-pr.cgi?pr=110655
> 
> Given that 32-bit libthr also doesn't work on 64-bit kernel, the only
> option is to map thread libs to libc_r via libmap32.conf.
> BTW, next time there is a poll about retiring libc_r please count me
> against for precisely this reason.

I plan on making sure full 32-bit compat exists for both libthr and
libpthread and backporting it to 6.x for work.  Very few things are
too hard to wrap with a 32-bit shim.

-- 
John Baldwin