1994/0512/pc/trap.c (diff list | history)

1994/0407/sys/src/9/pc/trap.c:183,190 – 1994/0512/sys/src/9/pc/trap.c:183,190 (short | long | prev | next)
1991/0709		* Set the 8259 as master with edge triggered * input with fully nested interrupts.
1991/0704		*/
1991/0709		outb(Int0ctl, 0x11); /* ICW1 - edge triggered, master, ICW4 will be sent */
1994/0512		outb(Int0ctl, (1<<4)|(1<<3)|(1<<0)); /* ICW1 - master, level triggered, ICW4 will be sent */
1991/0709		outb(Int0aux, Int0vec); /* ICW2 - interrupt vector offset */
1991/0731		outb(Int0aux, 0x04); /* ICW3 - have slave on level 2 */
1991/0709		outb(Int0aux, 0x01); /* ICW4 - 8086 mode, not buffered */
1994/0407/sys/src/9/pc/trap.c:195,202 – 1994/0512/sys/src/9/pc/trap.c:195,202
1991/0731		* Set the 8259 as master with edge triggered * input with fully nested interrupts. */ outb(Int1ctl, 0x11); /* ICW1 - edge triggered, master, ICW4 will be sent */
1994/0512		outb(Int1ctl, (1<<4)|(1<<3)|(1<<0)); /* ICW1 - master, level triggered, ICW4 will be sent */
1991/0731		outb(Int1aux, Int1vec); /* ICW2 - interrupt vector offset */ outb(Int1aux, 0x02); /* ICW3 - I am a slave on level 2 */ outb(Int1aux, 0x01); /* ICW4 - 8086 mode, not buffered */
1994/0407/sys/src/9/pc/trap.c:222,231 – 1994/0512/sys/src/9/pc/trap.c:222,228
1991/1113		[13] "general protection violation", };
1993/0915		Ureg lasttrap, *lastur;
1993/1113		Proc *lastup;
1993/0915
1991/0614		/*
1993/1124		* All traps come here. It is slower to have all traps call trap() rather than
1993/1115		* directly vectoring the handler. However, this avoids a lot of code duplication
1994/0407/sys/src/9/pc/trap.c:265,273 – 1994/0512/sys/src/9/pc/trap.c:262,267
1991/1113		}
1993/0217		if(v>=256 || (h = halloc.ivec[v]) == 0){
1993/0915		lasttrap = *ur; lastur = ur;
1993/1113		lastup = up;
1993/0224		/* an old 386 generates these fairly often, no idea why */
1991/1214		if(v == 13) return;
1994/0407/sys/src/9/pc/trap.c:307,316 – 1994/0512/sys/src/9/pc/trap.c:301,306
1993/0915		splhi(); if(user && (up->procctl || up->nnote))
1991/0910		notify(ur);
1993/1113		lastup = up;
1993/0915		lasttrap = *ur; lastur = ur;
1991/0806		} /*
1994/0407/sys/src/9/pc/trap.c:349,359 – 1994/0512/sys/src/9/pc/trap.c:339,344
1993/0915		dumpregs2(ur);
1993/1113		print(" magic %lux %lux %lux\n", x[0], x[1], x[2]); print(" ur %lux up %lux\n", ur, up);
1993/0915		dumpregs2(&lasttrap);
1993/1113		print(" lastur %lux lastup %lux\n", lastur); splhi(); dumpstack(); for(;;);
1993/0915		} void