gdb for powerpc target

[suvrat gupta]

Hi,
Has anyone used GDB for powerpc target debugging from an Intel PC. I
have tried gdb 4.18 and 5.0 but both don't support the commands listed
in the RTEMS user manual for GDB debugging. Commands like 'setrpcmode" ,
"target rtems" etc. I have built the code locally , using bit_gdb script
with target CPU as powerpc.
Any help will be greatly appreciated.
thanks
-suvrat