K 10
svn:author
V 3
ian
K 8
svn:date
V 27
2013-05-04T19:59:35.577392Z
K 7
svn:log
V 400
Insert STOP_UNWINDING directives in the _start (kernel entry point) and
fork_trampoline (thread entry point) assembler routines, because it's
not possible to unwind beyond those points.

Also insert STOP_UNWINDING in the exception_exit routine, to prevent an
unwind-loop at that point.  This is just a stopgap until we get around
to instrumenting all assembler functions with proper unwind metadata.

END