This is the first of a number of changes designed to generalise
MCWin64EHInstruction to support different target architectures. An ordered set
(vector) of these instructions is saved per frame to permit the emission of
information for Windows NT style unwinding. The only bit of information which
is actually target specific here is the Opcode for the unwinding bytecode. The
remainder of the information is simply generic information that is relevant to
the Windows NT unwinding model.
Remove the accessors for the fields, making them const and public instead. Sink
the knowledge of the alias'ed name into the single source and sink a single-use
check method into the use.
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This structure contains information related to the call frame used to generate
unwinding information. Rename this to reflect the future use to represent the
shared state between various architectures for WinCFI information.
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suffix (e.g. .xdata$myfunc). The suffix part isn't implemented yet, but
I'll get to it in the next patch.
Fix up all callers of the affected functions. Make them pass said suffix to
the function.
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directive.
Implement emission of Win64 EH unwind info.
Pull in <cassert> in MCWin64EH.h so it can use the assert() macro.
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and an exception handler. Handle that case.
Also, add an 'Emitted' member to the MCWin64EHUnwindInfo struct. It will be
needed later.
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ours compatible with GAS.
In retrospect, I should have emailed binutils about this earlier. Thanks to
Kai Tietz for pointing out that GAS already had SEH directives.
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