With this patch we introduce set/unset breakpoints routines and add/remove bp handlers. Currently soft breakpoints are only supported. Changes since v1: * Change if-statement in arc_remove_breakpoint * Squash changes from http://openocd.zylin.com/#/c/5641/ in this commit to fix build. Change-Id: Ib10ccdb02fd1606e4f407f012b1bee106a8ffccd Signed-off-by: Evgeniy Didin <didin@synopsys.com> Reviewed-on: http://openocd.zylin.com/5641 Tested-by: jenkins Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>