Hi,
I just want to share this good find for anyone who might find it useful:
http://embsysregview.sourceforge.net/ (http://embsysregview.sourceforge.net/)
It adds registers view in eclipse, only support some microcontrollers though.
Luckily for me stm32f407 of stm32f4discovery board is supported.
EDIT:
Gnu-arm-eclipse already has a similar plugin.
https://gnuarmeclipse.github.io/debug/peripheral-registers/ (https://gnuarmeclipse.github.io/debug/peripheral-registers/) now I know too ;-)