[LLVMdev] interest in an .eh_frame parser in llvm?

[Reid Kleckner]

I believe libc++abi already has such a parser.

Is it appropriate to adapt that CFI parser for use within LLVM or not?

I also know that ld64 does some translation from DWARF CFI to a more
compact format, and lld may wish to replicate that functionality.

This also feels related to the Itanium C++ ABI demangling problem, where we
have an implementation in libc++abi, but we can't reliably use it from
clang or lld. Maybe we can factor out an interface below the libunwind
unw_* interface and cxxabi cxa_* symbols, and link that into LLVM.

On Mon, Dec 15, 2014 at 11:09 PM, Sanjoy Das <sanjoy at playingwithpointers.com
> wrote:
>
> Hi all,
>
> Our use case for LLVM requires us to parse the .eh_frame sections
> emitted by MCJIT (for callee-saved-register spill slots, amongst other
> things).  Does it make sense to have an in-tree parser for .eh_frame,
> given that it will make such tasks a lot easier?
>
> -- Sanjoy
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