[cfe-dev] Porting libcxxabi / Unwind to Windows / MingW 32 bit

[Anton Korobeynikov]

> Yes, it's nice when the OS does the work.
>
> With MingW, I see a problem using our unwind library.
> __EH_FRAME_BEGIN__ is a local symbol with no external visibility
> outside the libgcc DLL. There is no API exposing it either.
> Only code compiled inside libgcc can access it.
In fact, no. We can (with linker support, surely), put all the EH info
into the dedicated section in the PE file. And do pretty similar
things, but walking the sections of PE file.

> The right solution would be to have a full replacement to libgcc based on
> our
> unwind code and use it instead. In addition to unwinding library, libgcc
> also
> supplies conversion and arithmetic functions so we'll need alternative
> versions
> of these too.
http://compiler-rt.llvm.org/ ? :)

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University