fc: Add the "exception handler" special reg.
fc: Add the "exception handler" special reg.

pierremoreau/envytools,grate-driver/envytools,grate-driver/envytools,hakzsam/envytools,grate-driver/envytools,envytools/envytools,envytools/envytools,karolherbst/envytools,hakzsam/envytools,karolherbst/envytools,hakzsam/envytools,karolherbst/envytools,MoochMcGee/envytools,kfractal/envytools,kfractal/envytools,hakzsam/envytools,kfractal/envytools,pierremoreau/envytools,pierremoreau/envytools,grate-driver/envytools,karolherbst/envytools,hakzsam/envytools,envytools/envytools,kfractal/envytools,karolherbst/envytools,envytools/envytools,MoochMcGee/envytools,MoochMcGee/envytools,MoochMcGee/envytools,pierremoreau/envytools,grate-driver/envytools,kfractal/envytools,envytools/envytools,pierremoreau/envytools,MoochMcGee/envytools