Motorola PowerPC asm warning

[Chris Johns]

Hi

Building the motorola_powerpc BSPs I noticed this warning:

../../../bsps/powerpc/shared/exceptions/ppc_exc.S: Assembler messages:
../../../bsps/powerpc/shared/exceptions/ppc_exc.S:132: Warning: invalid register
expression
../../../bsps/powerpc/shared/exceptions/ppc_exc.S:135: Warning: invalid register
expression

https://git.rtems.org/rtems/tree/bsps/powerpc/shared/exceptions/ppc_exc.S#n132

Can someone with an understanding of the PowerPC processors please comment if
this is an issue or how we can remove the warning?

Thanks
Chris