This problem currently exists on both 2.0.3 and CVS
head. The MC sequence was from 2.0.3, but CVS head has the same behavior
and exactly the same strange faulting address 0x0000000000000380
What version of Jikes RVM are you
using? I'm assuming it is not the cvs head ppc64 because we stop using
the explicit stack pointer and store with update sequence in the PPC baseline
compiler almost a year ago. This looks to me like an old code sequence
for pushing null on the stack.