1991/0808/pc/fault386.c (diff list | history)

pc/fault386.c on 1991/0710
1991/0710		#include "u.h" #include "lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "ureg.h"
1991/0711		#include "io.h"
1991/0710
1991/0719		int faulting;
1991/0710		void
1991/0718		fault386(Ureg *ur)
1991/0710		{
1991/0718		ulong addr; int read; int user;
1991/0719		int n;
1991/0720		int insyscall;
1991/0718
1991/0720		insyscall = u->p->insyscall; u->p->insyscall = 1;
1991/0718		addr = getcr2();
1991/0719		if(faulting) panic("double fault\n"); faulting = 1;
1991/0718		read = !(ur->ecode & 2); user = (ur->ecode & 4);
1991/0719		n = fault(addr, read); if(n < 0){
1991/0718		if(user){
1991/0720		pprint("user %s error addr=0x%lux\n", read?"read":"write", addr); pprint("status=0x%lux pc=0x%lux sp=0x%lux\n", ur->flags, ur->pc, ur->usp);
1991/0718		pexit("Suicide", 0); } u->p->state = MMUing; dumpregs(ur);
1991/0808		panic("fault: 0x%lux", addr);
1991/0718		}
1991/0719		faulting = 0;
1991/0720		u->p->insyscall = insyscall;
1991/0710		} void
1991/0718		faultinit(void)
1991/0710		{
1991/0718		setvec(Faultvec, fault386);
1991/0710		}