All,
I've got top of tree xen-ia64-unstable.hg running on my Tiger
system. I'm working on getting our (Transitive's) QuickTransit
dynamic binary translator working in a guest machine. QuickTransit
Sparc Solaris - ia64 linux makes use of the big endian mode to speed
up its translation of Sparc applications.
I've tried adding a rum psr.be in all the interrupt vectors near
the top and that certainly improves matters, but it also causes the
unaligned access handler to believe the user app is running in little
endian mode, which is not true. I've put together an example to
demonstrate the issue. The source is attached below. Basically the
example tries to do an unaligned access whilst in big endian mode,
which when running correctly currently produces a SIGBUS ( since the
Linux kernel currently has no big endian unaligned access
handling ). On the Xen kernel it currently deadlocks.
Comments welcome,
Gareth.
asmFunction.s
Description: Binary data
asmTest.c
Description: Binary data
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