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Re: [patch] C6X unwinding/exception handling
- From: Andrew Haley <aph at redhat dot com>
- To: Matthias Klose <doko at ubuntu dot com>
- Cc: Paul Brook <paul at codesourcery dot com>, gcc-patches at gcc dot gnu dot org, GCC Java <java at gcc dot gnu dot org>, Nicola Pero <nicola dot pero at meta-innovation dot com>
- Date: Mon, 10 Oct 2011 11:32:48 +0100
- Subject: Re: [patch] C6X unwinding/exception handling
- References: <201108041531.58790.paul@codesourcery.com> <201109131348.13087.paul@codesourcery.com> <4E9180F5.3050203@ubuntu.com>
On 10/09/2011 12:09 PM, Matthias Klose wrote:
> This did break libobjc and libjava on arm-linux-gnueabi.
>
> libobjc now has an undefined reference to _Unwind_decode_target2, which can be
> avoided with
>
> --- libobjc/exception.c.orig 2011-07-21 15:33:57.000000000 +0000
> +++ libobjc/exception.c 2011-10-09 10:53:12.554940776 +0000
> @@ -182,7 +182,7 @@
> _Unwind_Ptr ptr;
>
> ptr = (_Unwind_Ptr) (info->TType - (i * 4));
> - ptr = _Unwind_decode_target2 (ptr);
> + ptr = _Unwind_decode_typeinfo_ptr (info->ttype_base, (_Unwind_Word) ptr);
>
> /* NULL ptr means catch-all. Note that if the class is not found,
> this will abort the program. */
>
> libjava fails to build, the same change doesn't work for libjava/exception.cc,
> because the struct lsda_header_info in exception.cc is missing the ttype_base
> member. Any suggestions?
Is this fixable without backing out Paul Brooks' patch?
Andrew.