Re: [RFC] Fix for Go32-v2 native woes

["H.J. Lu" <hjl.tools@gmail.com>]

On Tue, Apr 6, 2010 at 8:19 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Tue, 06 Apr 2010 20:45:25 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: gdb-patches@sourceware.org
>>
>> > From: "Pierre Muller" <pierre.muller@ics-cnrs.unistra.fr>
>> > Date: Tue, 6 Apr 2010 16:15:05 +0200
>> >
>> >   I finally managed to find a fix, but it is not straightforward:
>> >   I had to add a new xml file in features/i386 directory
>> > specific for go32v2 target, that does not read i386-sse.xml.
>> >   I had to adapt the code in i386-tdep.c to support
>> > missing feature_vector and to set tdesc to
>> > tdesc_i386_go32v2 instead of tdesc_i386 when go32v2
>> > osabi was detected.
>> >
>> >   This allows me to use CVS GDB on DJGPP again.
>> >
>> >   I checked with a testsuite run on gcc-farm that nothing changed
>> > for at least that other target (amd64-linux).
>> >
>> >   Similar fixes might be required for other 'old'
>> > i386 targets that do not support SSE registers.
>> >
>> >   Comments welcome as usual!
>>
>> Thanks.  But I really hope that a much more elegant solution could be
>> found.  A general layer of code such as i386-tdep.c should not include
>> any code that is specific to certain targets.
>
> Btw, I think this solution cannot be acceptable for one more reason:
> GDB should work even without libexpat linked in, and then XML files
> cannot be read.
>
> Can you see what happens with this problem in a GDB build without
> libexpat?  (Sorry, I won't be able to do that myself in the near
> future.)
>

I have a followup patch on top of AVX gdb to support i386 without
SSE. I will submit it after AVX patches are checked in.


-- 
H.J.