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Re: PATCH [8/n]: Prepare x32: PR other/48007: Unwind library doesn't work with UNITS_PER_WORD > sizeof (void *)


On Fri, Jul 1, 2011 at 7:25 AM, Rainer Orth <ro@cebitec.uni-bielefeld.de> wrote:
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
>>> Then move it below the definition of struct _Unwind_Context with a
>>
>> It won't work since I need to define a macro before struct _Unwind_Context.
>
> Then this does seem to be a case for libgcc_tm_file indeed. ?Ugly that
> the unwinder configuration has to be split between two different files
> this way, but unavoidable, it seems. ?At least when libgcc_tm_file moves
> to libgcc/config.host, it won't any longer be split between gcc and libgcc.
>

We need target support for unwind:

1. Target configuration.
2. Target implementation.

Unfortunately, they can't be put in the same file.  If we really want to use
the same file, we can add some macros like:

UNWIND_CONFIGURE
UNWIND_IMPLEMENT

and we can include the same file twice.


-- 
H.J.


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