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Re: [COMMIT] Fix decoding CIE's in DWARF frame info


On Fri, Nov 05, 2004 at 07:53:51PM +0100, Mark Kettenis wrote:
>    Date: Fri, 05 Nov 2004 12:00:12 -0500
>    From: Andrew Cagney <cagney@gnu.org>
> 
>    Mark Kettenis wrote:
>    > The old code didn't take into account that the encoding used to
>    > specify the personality routine in the augmentation could be
>    > DW_PE_EH_aligned.
>    > 
>    > Fixed by the attach patch.
>    > 
>    > Committed to mainline.  I'll commit this to the branch later today.
> 
>    How are you testing this?  I'm seeing:
> 
>    dwarf2-frame.c:1083: internal-error: Unsupported encoding: DW_EH_PE_indirect
> 
> If your toolchain really generates DW_EH_PE_indirect, it's a different
> problem; I don't know how to properly support this :-(.

I do know that some GCC toolchains emit DW_EH_PE_indirect - I ran into
it yesterday on PowerPC.  It's exactly what it says; after applying
whatever other encoding (pcrel, etc), dereference the result.  Adding
this to read_encoded_value should be pretty straightforward.

(I encountered it in an SJLJ context rather than .eh_frame, but I think
the same GCC macros control both.)

-- 
Daniel Jacobowitz


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