IRQ stuff

kernel/pic.c

@@ -58,3 +58,13 @@ void irq(uint8 idx, bool t) {
 		outb(port, data);
 	}
 }
+
+static uint16 irq_reg(int ocw3) {
+	outb(PIC1_CMD, ocw3);
+	outb(PIC2_CMD, ocw3);
+	return (inb(PIC2_CMD) << 8 | inb(PIC1_CMD));
+}
+
+uint16 get_irr() { return irq_reg(PIC_R_IRR); } // fetch IRR 
+uint16 get_isr() { return irq_reg(PIC_R_ISR); } // fetch ISR
+

kernel/pic.h

@@ -42,3 +42,5 @@ void pic_disable();
 void irq(uint8, bool);
 
 static uint16 irq_reg(int ocw3);
+uint16 get_irr();
+uint16 get_isr();