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[SEH] Add initial support for AArch64

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This doesn't yet implement inspecting the .pdata/.xdata to find the
LSDA pointer (in UnwindCursor::getInfoFromSEH), but normal C++
exception handling seems to run just fine without it. (The only
place I can see where it's even referenced is in
unwind_phase2_forced, and I can't find a codepath where libcxxabi
would end up calling that.)

Differential Revision: https://reviews.llvm.org/D55674

llvm-svn: 349532
This commit is contained in:
Martin Storsjo
2018-12-18 20:05:59 +00:00
parent 18a9d545e1
commit 09cf6374c1
3 changed files with 75 additions and 2 deletions
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6
libunwind/include/__libunwind_config.h
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@@ -57,7 +57,11 @@
# elif defined(__aarch64__)
# define _LIBUNWIND_TARGET_AARCH64 1
# define _LIBUNWIND_CONTEXT_SIZE 66
# define _LIBUNWIND_CURSOR_SIZE 78
# if defined(__SEH__)
# define _LIBUNWIND_CURSOR_SIZE 164
# else
# define _LIBUNWIND_CURSOR_SIZE 78
# endif
# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64
# elif defined(__arm__)
# define _LIBUNWIND_TARGET_ARM 1