Re: Progress on SPARC

[Andrew Cagney <ac131313@redhat.com>]

>    Date: Sun, 2 Nov 2003 16:31:47 -0500
>    From: Ben Collins <bcollins@debian.org>
> 
>    Does the 64-bit gdb support debugging 32-bit binaries? I ask, because
>    Dave Miller's work getting GDB to support 64-bit sparc binaries did in
>    fact support debugging 32-bit binaries.
> 
> Yes it does.  It mostly works, and running the testsuite in a 32-bit
> environment on a 64-bit GDB doesn't produce results that are much
> worse than running the testsuite on a 32-bit GDB.  The 64-bit GDB
> doesn't read 32-bit core files right now, but I should be able to fix
> that soon after I merge the SPARC-branch into mainline.  Debugging
> 32-bit threaded apps with a 64-bit GDB doesn't work too well either.
> This will be much harder too fix since we have absolutely no support
> for cross-platform threads debugging on Linux.

FYI, a very recent glibc should address the 32x64 libthread-db problems. 
    My amd64-gdb branch gave identical results to a straight i386 GDB.

> Dave's GDB probably has the same problems.

Yes, and more.

Andrew