Experimental Support for Microblaze 64-bit Architecture - binutils and gdb

[Simon Marchi]

On 7/12/24 1:03 AM, Gopi Kumar Bulusu wrote:
> 
> namaskaram
> 
> Here is my thinking --
> 
> As  gas/ld/rob (rest of binutils) are producers of elf and gdb is a consumer adding experimental microblaze 64-bit support patches  in the former (bfd)  and not latter will mean gdb built from the exact same  binutils-gdb code base won't be able to process the mb64 binaries and any one planning to run/debug the binaries with gdb will not be able to do so.  Also the reason for starting with binutils-gdb before contributing 
> patches to gcc.

If you first add support for 64-bit to gas/ld (and even gcc), I presume
that debugging 32-bit Microblaze programs with gdb will keep working.
Debugging 64-bit Microblaze programs with gdb will not work (yet), but
that is not a regression.

Anyhow, given that binutils and gdb are in the same repo, it would be
fine to send changes to binutils and gdb in the same patch series (but
in properly separated patches).  binutils maintainer will approve
binutils patches, and gdb maintainers will approve gdb patches.

> Also, as part of this effort I had to merge bintutils binutils-gdb and
> gdb binutils-gdb patches for the target from Xilinx git that have over
> the years digressed. I think It will be a good idea to keep them in
> sync as part of this effort.


Having everything upstream is the best way to avoid diverging and
staying stuck with an old version.

Thanks a lot for working on this.

Simon