to speed up debugging, don't load the complete register context on a halt event, load only those registers that might be clobbered during debugging. Change-Id: I0b58e97aad6f28aefce4a52e870af61e1ef1a44f Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com> Reviewed-on: http://openocd.zylin.com/3995 Tested-by: jenkins Reviewed-by: Paul Fertser <fercerpav@gmail.com>