b49a214439
* Use machine/conf.h not sys/conf.h to get the prototypes for the scn cdev functions. * Include <sys/kgdb.h> to get prototypes for kgdb_connect and kgdb_attach. * Add missing prototypes for some functions. * Make ddb work before the console was opend. Thank's to Ian Dall for this change. His comment: Also, ddb doesn't work if a break is set before the console is opened. That is because DTR and RTS are not asserted. It would probably work if the console is wired to ingnore DTR or RTS. The change below is probably not very correct. Proabably the state of DTR and RTS should be saved and DTR and RTS asserted on the start of a polled serial input and the saved values restored on exiting polled input * Remove unused function scn_ei.