1992/1105/power/faultmips.c (diff list | history)

power/faultmips.c on 1990/1212
1990/1212		#include "u.h"
1992/0321		#include "../port/lib.h"
1990/1212		#include "mem.h" #include "dat.h" #include "fns.h" #include "ureg.h"
1992/0111		#include "../port/error.h"
1992/0508		#include "io.h"
1990/1212		/* * find out fault address and type of access. * Call common fault handler. */ void faultmips(Ureg *ur, int user, int code) { ulong addr; extern char *excname[];
1991/0705		char buf[ERRLEN];
1990/1212		int read;
1992/0508		LEDON(LEDfault);
1990/1212		addr = ur->badvaddr;
1992/0609		if(addr & KZERO) LEDON(LEDkfault);
1990/1212		addr &= ~(BY2PG-1); read = !(code==CTLBM || code==CTLBS);
1991/0926
1990/1212		if(fault(addr, read) < 0){ if(user){
1991/1218		sprint(buf, "sys: trap: fault %s addr=0x%lux", read? "read" : "write", ur->badvaddr);
1991/0705		postnote(u->p, 1, buf, NDebug);
1992/0508		LEDOFF(LEDfault);
1991/0705		return;
1990/1212		}
1992/1105		iprint("kernel %s badvaddr=0x%lux\n", excname[code], ur->badvaddr); iprint("status=0x%lux pc=0x%lux sp=0x%lux\n", ur->status, ur->pc, ur->sp);
1990/1212		dumpregs(ur); panic("fault"); }
1992/0508		LEDOFF(LEDfault);
1990/1212		} /* * called in sysfile.c */ void evenaddr(ulong addr) { if(addr & 3){ postnote(u->p, 1, "sys: odd address", NDebug); error(Ebadarg); } }