Vedant Kumar 3b14d80ad4 [MachCore] Report arm64 thread exception state ...

A MachO userspace corefile may contain LC_THREAD commands which specify
thread exception state.

For arm64* only (for now), report a human-readable version of this state
as the thread stop reason, instead of 'SIGSTOP'.

As a follow-up, similar functionality can be implemented for x86 cores
by translating the trapno/err exception registers.

rdar://82898146

Differential Revision: https://reviews.llvm.org/D109795

2021-09-17 16:45:03 -07:00

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