systemc: Catch exceptions during updates, notifications, and callbacks.

Change-Id: I6005c12ce32d24413618e3955625432985f99f69
Reviewed-on: https://gem5-review.googlesource.com/c/12607
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
3 files changed