1991/0913/pc/main.c (diff list | history)

1991/0912/sys/src/9/pc/main.c:222,246 – 1991/0913/sys/src/9/pc/main.c:222,265 (short | long | prev | next)
1991/0809		conf.nhard = 1;
1991/0711		}
1991/0716		/*
1991/0906		* math coprocessor error */ void
1991/0912		matherror1(Ureg *ur)
1991/0913		char *mathmsg[] =
1991/0906		{
1991/0912		print("matherror1\n");
1991/0907		pexit("Math error", 0);
1991/0906		}
1991/0913		"invalid", "denormalized", "div-by-zero", "overflow", "underflow", "precision", "stack", "error", };
1991/0906		/*
1991/0912		* math coprocessor error */ void matherror2(Ureg *ur)
1991/0913		matherror(Ureg *ur)
1991/0912		{ outb(0xF0, 0xFF); /* bad craziness */ print("matherror2\n"); pexit("Math error", 0);
1991/0913		ulong status; int i; char *msg; char note[ERRLEN]; /* * a write cycle to port 0xF0 clears the interrupt latch attached * to the error# line from the 387 */ outb(0xF0, 0xFF); status = fpstatus() & 0xffff; msg = "unknown"; for(i = 0; i < 8; i++) if((1<<i) & status){ msg = mathmsg[i]; break; } sprint(note, "math: %s, status 0x%ux, pc 0x%lux", msg, status, ur->pc); postnote(u->p, 1, note, NDebug);
1991/0912		} /*
1991/0912/sys/src/9/pc/main.c:270,276 – 1991/0913/sys/src/9/pc/main.c:289,294
1991/0906		void mathover(Ureg *ur) {
1991/0912		print("mathover\n");
1991/0907		pexit("Math overrun", 0);
1991/0906		}
1991/0912/sys/src/9/pc/main.c:277,284 – 1991/0913/sys/src/9/pc/main.c:295,302
1991/0906		void mathinit(void) {
1991/0912		setvec(Matherr1vec, matherror1); setvec(Matherr2vec, matherror2);
1991/0913		setvec(Matherr1vec, matherror); setvec(Matherr2vec, matherror);
1991/0906		setvec(Mathemuvec, mathemu); setvec(Mathovervec, mathover); }
1991/0912/sys/src/9/pc/main.c:320,338 – 1991/0913/sys/src/9/pc/main.c:338,343
1991/0712		}
1991/0906		/* * make noise, blink lights */
1991/0716		void buzz(int f, int d)
1991/0712		{
1991/0716		}
1991/0712
1991/0716		void lights(int val) {
1991/0702		}
1991/0803		/* * special stuff for 80c51 power management and headland system controller */ enum
1991/0912/sys/src/9/pc/main.c:443,450 – 1991/0913/sys/src/9/pc/main.c:448,455
1991/0803		} /* * control power to the serial line * onoff == 0 means turn power on
1991/0913		* power to serial port * onoff == 0 means on
1991/0803		* onoff == 1 means off */ int
1991/0912/sys/src/9/pc/main.c:453,466 – 1991/0913/sys/src/9/pc/main.c:458,483
1991/0803		return pmuwrbit(1, onoff, 6); } int owl(int onoff)
1991/0913		void buzz(int f, int d)
1991/0803		{ return pmuwrbit(0, onoff, 4);
1991/0913		static Rendez br; static QLock bl; qlock(&bl); pmuwrbit(0, 0, 6); tsleep(&br, return0, 0, d); pmuwrbit(0, 1, 6); qunlock(&bl);
1991/0803		} int mail(int onoff)
1991/0913		void lights(int val)
1991/0803		{ return pmuwrbit(0, onoff, 1);
1991/0913		static QLock ll; qlock(&ll); pmuwrbit(0, (val&1), 4); /* owl */ pmuwrbit(0, ((val>>1)&1), 1); /* mail */ qunlock(&ll);
1991/0803		}