target: Fix get_reg, prevent returning invalid data
This patch forces a read of register from the target
in the get_reg command in case the register cache
does not hold a valid value at that moment.
Note that the command "reg" already handles it
correctly, no fix is needed there.
Change-Id: I75fad25188e94ee4e06162ab6d600ea24dbf590a
Signed-off-by: Marek Vrbka <marek.vrbka@codasip.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7958
Reviewed-by: Jan Matyas <jan.matyas@codasip.com>
Reviewed-by: zapb <dev@zapb.de>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins