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Differential D3370

arm64: turn el0 EXCP_UNKNOWN into a SIGILL
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Authored by emaste on Aug 12 2015, 6:12 PM.
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andrew
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rS286721: arm64: turn unknown el0 exception into a SIGILL
Summary

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.

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rS FreeBSD src repository - subversion
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emaste updated this revision to Diff 7910.Aug 12 2015, 6:12 PM
emaste retitled this revision from to arm64: turn el0 EXCP_UNKNOWN into a SIGILL.
emaste updated this object.
emaste edited the test plan for this revision. (Show Details)
emaste added a reviewer: andrew.
emaste added inline comments.Aug 12 2015, 6:29 PM
sys/arm64/arm64/trap.c
241–244 ↗(On Diff #7910)

oops, meant without the -, so that we get:

  x0:       7ffffff680
  x1:                0
  x2:               14
  x3:                8
  x4:                0
  x5:                1
...
andrew accepted this revision.Aug 13 2015, 11:52 AM
andrew edited edge metadata.
This revision is now accepted and ready to land.Aug 13 2015, 11:52 AM
Closed by commit rS286721: arm64: turn unknown el0 exception into a SIGILL (authored by emaste). · Explain WhyAug 13 2015, 1:21 PM
This revision was automatically updated to reflect the committed changes.

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head/
sys/
arm64/
arm64/
39 lines

Diff 7923

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head/sys/arm64/arm64/trap.c

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