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RE: [PATCH 1/2] Add support for O32 FPXX ABI
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: Matthew Fortune <Matthew dot Fortune at imgtec dot com>
- Cc: Richard Sandiford <rdsandiford at googlemail dot com>, "macro at codesourcery dot com" <macro at codesourcery dot com>, "binutils at sourceware dot org" <binutils at sourceware dot org>
- Date: Tue, 22 Apr 2014 17:05:24 +0000
- Subject: RE: [PATCH 1/2] Add support for O32 FPXX ABI
- Authentication-results: sourceware.org; auth=none
- References: <6D39441BF12EF246A7ABCE6654B023534DAAAB at LEMAIL01 dot le dot imgtec dot org> <87a9c0xkje dot fsf at talisman dot default> <6D39441BF12EF246A7ABCE6654B023534DC37D at LEMAIL01 dot le dot imgtec dot org> <87ha655s3i dot fsf at sandifor-thinkpad dot stglab dot manchester dot uk dot ibm dot com> <6D39441BF12EF246A7ABCE6654B023534DC8CF at LEMAIL01 dot le dot imgtec dot org>
On Mon, 7 Apr 2014, Matthew Fortune wrote:
> > What did you think about the idea of reusing the .gnu_attributes section
> > data as the segment data? It seems simpler than the PT_NOTE format.
> I have no major objection. Slight concern over defining more of the MIPS
> ABI around the 'gnu' vendor attributes which is a bit strange given the
> MIPS architecture is not restricted to gnu tools. Having said that, MIPS is
> already using these as critical parts of the ABI and following it through
> to load time information as well then seems reasonable.
> In order to use the pre-existing section for GNU attributes I guess it
> would need to become SEC_ALLOC and get associated with the new program
> header. Perhaps call it PT_MIPS_ATTRIBUTES or PT_GNU_ATTRIBUTES if this
> were done for all architectures. And then somehow get that to be positioned
> immediately after the notes segment.
Making an allocated segment for attributes was previously rejected; see
references in <http://www.eglibc.org/archives/patches/msg01019.html>. I
don't think anything significant has changed to affect that design
Joseph S. Myers