1991/0503/gnot/trap.c (diff list | history)

1991/0322/sys/src/9/gnot/trap.c:8,15 – 1991/0503/sys/src/9/gnot/trap.c:8,15 (short | long | prev | next)
1990/0513		#include "errno.h"
1990/03091		void notify(Ureg*); void noted(Ureg**); void rfnote(Ureg**);
1991/0503		void noted(Ureg*); void rfnote(Ureg*);
1990/03091		char *regname[]={ "R0",
1991/0322/sys/src/9/gnot/trap.c:156,161 – 1991/0503/sys/src/9/gnot/trap.c:156,163
1990/03091		if(!u->notified){ if(!u->notify) goto Die;
1991/0503		u->svvo = ur->vo; u->svsr = ur->sr;
1990/0816		sp = ur->usp;
1990/03091		sp -= sizeof(Ureg); u->ureg = (void*)sp;
1991/0322/sys/src/9/gnot/trap.c:179,186 – 1991/0503/sys/src/9/gnot/trap.c:181,197
1990/03091		* Return user to state before notify() */ void noted(Ureg **urp)
1991/0503		noted(Ureg *ur)
1990/03091		{
1991/0503		Ureg *nur; nur = u->ureg; validaddr(nur->pc, 1, 0); validaddr(nur->usp, BY2WD, 0); if(nur->sr!=u->svsr || nur->vo!=u->svvo){ pprint("bad noted ureg sr %ux vo %ux\n", nur->sr, nur->vo); pexit("Suicide", 0); }
1990/03091		lock(&u->p->debug);
1990/0619		if(!u->notified){ unlock(&u->p->debug);
1991/0322/sys/src/9/gnot/trap.c:187,196 – 1991/0503/sys/src/9/gnot/trap.c:198,207
1990/0619		return; }
1990/03091		u->notified = 0;
1991/0318		memmove(*urp, u->ureg, sizeof(Ureg));
1991/0503		memmove(ur, u->ureg, sizeof(Ureg));
1990/03091		unlock(&u->p->debug); splhi(); rfnote(urp);
1991/0503		rfnote(ur);
1990/03091		} #undef CHDIR /* BUG */
1991/0322/sys/src/9/gnot/trap.c:288,294 – 1991/0503/sys/src/9/gnot/trap.c:299,305
1990/03091		u->nerrlab = 0; u->p->insyscall = 0; if(r0 == NOTED) /* ugly hack */ noted(&aur); /* doesn't return */
1991/0503		noted(aur); /* doesn't return */
1990/03091		if(u->nnote){ ur->r0 = ret; notify(ur);