1994/0619/carrera/trap.c (diff list | history)

1994/0617/sys/src/9/carrera/trap.c:283,288 – 1994/0619/sys/src/9/carrera/trap.c:283,296 (short | long | prev | next)
1993/0903		} }
1994/0619		struct { ulong cause; ulong devint3; ulong devint4; ulong state; }sisr;
1993/0903		void intr(Ureg *ur) {
1994/0617/sys/src/9/carrera/trap.c:292,300 – 1994/0619/sys/src/9/carrera/trap.c:300,310
1993/0903		m->intr++; cause &= INTR7|INTR6|INTR5|INTR4|INTR3|INTR2|INTR1|INTR0;
1994/0617
1994/0619		sisr.cause = cause;
1993/0904		if(cause & INTR3) {
1993/1219		devint = IO(uchar, Intcause);
1994/0619		sisr.devint3 = devint; sisr.state = 0;
1993/1219		switch(devint) { default: panic("unknown devint=#%lux", devint);
1994/0617/sys/src/9/carrera/trap.c:318,326 – 1994/0619/sys/src/9/carrera/trap.c:328,338
1993/1219		break;
1993/0904		} cause &= ~INTR3;
1994/0619		sisr.state = 1;
1993/0904		}
1994/0326
1993/0908		if(cause & INTR2) {
1994/0619		sisr.state = 2;
1994/0220		isr = IO(ulong, R4030Isr); if(isr) { iprint("R4030 Interrupt\n");
1994/0617/sys/src/9/carrera/trap.c:330,341 – 1994/0619/sys/src/9/carrera/trap.c:342,355
1994/0220		iprint(" MFA #%lux\n", IO(ulong, R4030Mfa)); }
1993/0908		cause &= ~INTR2;
1994/0619		sisr.state = 3;
1993/0908		}
1994/0326
1993/0904		if(cause & INTR4) {
1993/0905		devint = IO(uchar, I386ack);
1994/0225		vec = devint&~0x7;
1994/0617
1994/0619		sisr.devint4 = devint; sisr.state = 4;
1994/0225		/* reenable the 8259 interrupt */ if(vec == Int0vec || vec == Int1vec){ EISAOUTB(Int0ctl, EOI);
1994/0617/sys/src/9/carrera/trap.c:348,360 – 1994/0619/sys/src/9/carrera/trap.c:362,379
1994/0225		iprint("i386ACK #%lux\n", devint); break;
1994/0307		case 7:
1994/0619		sisr.state = 5;
1994/0225		audiosbintr();
1994/0619		sisr.state = 6;
1994/0307		break; case 13:
1994/0619		sisr.state = 7;
1994/0307		audiodmaintr();
1994/0619		sisr.state = 8;
1994/0225		break; }
1993/0904		cause &= ~INTR4;
1994/0619		sisr.state = 9;
1993/0904		}
1994/0326
1993/0904		if(cause & INTR7) {
1994/0617/sys/src/9/carrera/trap.c:490,499 – 1994/0619/sys/src/9/carrera/trap.c:509,519
1993/0903		pexit(n->msg, n->flag!=NDebug); } up->svstatus = ur->status;
1994/0617		sp = ur->usp - sizeof(Ureg);
1994/0619		sp = ur->usp & ~(BY2V-1); sp -= sizeof(Ureg);
1993/0903
1994/0617		if(sp&0x3 || !okaddr((ulong)up->notify, BY2WD, 0) || !okaddr(sp-ERRLEN-3*BY2WD, sizeof(Ureg)+ERRLEN-3*BY2WD, 1)) {
1994/0619		if(!okaddr((ulong)up->notify, BY2WD, 0) || !okaddr(sp-ERRLEN-3*BY2WD, sizeof(Ureg)+ERRLEN-3*BY2WD, 1)) {
1993/0903		pprint("suicide: bad address or sp in notify\n"); qunlock(&up->debug); pexit("Suicide", 0);
1994/0617/sys/src/9/carrera/trap.c:506,514 – 1994/0619/sys/src/9/carrera/trap.c:526,538
1993/0903		sp -= 3*BY2WD; *(ulong*)(sp+2*BY2WD) = sp+3*BY2WD; /* arg 2 is string */ up->svr1 = ur->r1; /* save away r1 */
1994/0614		ur->r1 = (ulong)up->ureg; /* arg 1 is ureg* */
1994/0617		*(ulong*)(sp+1*BY2WD) = (ulong)up->ureg; /* arg 1 0(FP) is ureg* */ *(ulong*)(sp+0*BY2WD) = 0; /* arg 0 is pc */
1994/0619		up->svhr1 = ur->hr1; /* save away r1 */ ur->r1 = (long)up->ureg; /* arg 1 is ureg* */ ur->hr1 = 0; if(ur->r1 < 0) ur->hr1 = ~0; ((ulong*)sp)[1] = (ulong)up->ureg; /* arg 1 0(FP) is ureg* */ ((ulong*)sp)[0] = 0; /* arg 0 is pc */
1993/0903		ur->usp = sp; ur->pc = (ulong)up->notify; up->notified = 1;
1994/0617/sys/src/9/carrera/trap.c:546,551 – 1994/0619/sys/src/9/carrera/trap.c:570,576
1994/0513
1993/0903		memmove(*urp, up->ureg, sizeof(Ureg)); (*urp)->r1 = up->svr1;
1994/0619		(*urp)->hr1 = up->svhr1;
1993/0903		switch(arg0) { case NCONT: if(!okaddr(nur->pc, 1, 0) || !okaddr(nur->usp, BY2WD, 0)){
1994/0617/sys/src/9/carrera/trap.c:638,643 – 1994/0619/sys/src/9/carrera/trap.c:663,671
1993/0903		splhi(); if(up->scallnr!=RFORK && (up->procctl || up->nnote)){ ur->r1 = ret; /* load up for noted() */
1994/0619		ur->hr1 = 0; if(ur->r1 < 0) ur->hr1 = ~0;
1993/0903		if(notify(ur)) return ur->r1; }