[Unwind] Harmonise exception class for EHABI spec.

EHABI defines the exception class as char[8] instead of uint64_t [1].
For ABI compatibility the ABI the definition needs to be updated.

[1] https://github.com/ARM-software/abi-aa/blob/main/ehabi32/ehabi32.rst#82language-independent-unwinding-types-and-functions

Reviewed By: manojgupta, MaskRay, #libunwind

Differential Revision: https://reviews.llvm.org/D109047

GitOrigin-RevId: f5b997e6b7061323fff13fafcc0c311d9e78e848
5 files changed
tree: 5ca43c4b064bbbafbe80e86fc661775fc4f78a30
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT