Ed Maste ccd285e76c arm64: turn unknown el0 exception into a SIGILL
It seems we get EXCP_UNKNOWN from QEMU when executing zeroed memory.
Print a register dump here and signal illegal instruction. Also print
a register dump for other invalid exceptions, before panic.

Reviewed by:	andrew
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D3370
2015-08-13 13:21:00 +00:00
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