How to debug RTEMS at AT91RM9200 board?

[Yanjun Luo]

Hi,
How can I debug application in RTEMS at my AT91RM9200 board?
Can I use MultiICE to debug?
Or can I use remote gdb? I searched RTEMS's source code,find
rgdb code at "rtems-src/c/src/librdbg/src", but only support
i386, m68k and powerpc. Does RTEMS support rgdb of ARM now?
If not, how can I add this function?

Any hints are welcome.

Thanks.
Yanjun Luo.