forked from PoliEcho-holding-org/kern
Tom-on
90ac82eebc
Moved all header files into include/ and removed their C counterparts -> code inside .h files Also added a kernel.ld linker file since we don't have many code files in src/ now, i removed src/kernel/ only real code change is that i moved memcopy() and memset() into string.h from system.h
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#ifndef IRQ_H
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#define IRQ_H
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#include "stdint.h"
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#include "idt.h"
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void* irqRoutines[16] = { 0 };
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extern void irq0();
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extern void irq1();
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extern void irq2();
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extern void irq3();
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extern void irq4();
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extern void irq5();
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extern void irq6();
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extern void irq7();
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extern void irq8();
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extern void irq9();
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extern void irq10();
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extern void irq11();
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extern void irq12();
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extern void irq13();
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extern void irq14();
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extern void irq15();
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void installIrqHandler(uint32_t irq, void (*handler)(struct regs* r)) {
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irqRoutines[irq] = handler;
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}
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void uninstallIrqHandler(uint32_t irq) {
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irqRoutines[irq] = 0;
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}
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void irqHandler(struct regs* r) {
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void (*handler)(struct regs* r);
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handler = irqRoutines[r->intNo - 32]; // Offset by 32 because of isrs
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if (handler) handler(r);
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// Something about master and slave handlers
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if (r->intNo >= 40) outb(0xa0, 0x20);
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outb(0x20, 0x20);
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}
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void irqRemap(void) {
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outb(0xa0, 0x11);
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outb(0x20, 0x11);
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outb(0x21, 0x20);
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outb(0xa1, 0x28);
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outb(0x21, 0x04);
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outb(0xa1, 0x02);
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outb(0x21, 0x01);
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outb(0xa1, 0x01);
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outb(0x21, 0x0);
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outb(0xa1, 0x0);
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}
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void setupIrqs() {
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irqRemap();
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// Same as isrs, but differnet handlers :o
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idtSetGate(32, (unsigned)irq0, 0x08, 0x8e);
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idtSetGate(33, (unsigned)irq1, 0x08, 0x8e);
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idtSetGate(34, (unsigned)irq2, 0x08, 0x8e);
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idtSetGate(35, (unsigned)irq3, 0x08, 0x8e);
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idtSetGate(36, (unsigned)irq4, 0x08, 0x8e);
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idtSetGate(37, (unsigned)irq5, 0x08, 0x8e);
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idtSetGate(38, (unsigned)irq6, 0x08, 0x8e);
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idtSetGate(39, (unsigned)irq7, 0x08, 0x8e);
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idtSetGate(40, (unsigned)irq8, 0x08, 0x8e);
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idtSetGate(41, (unsigned)irq9, 0x08, 0x8e);
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idtSetGate(42, (unsigned)irq10, 0x08, 0x8e);
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idtSetGate(43, (unsigned)irq11, 0x08, 0x8e);
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idtSetGate(44, (unsigned)irq12, 0x08, 0x8e);
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idtSetGate(45, (unsigned)irq13, 0x08, 0x8e);
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idtSetGate(46, (unsigned)irq14, 0x08, 0x8e);
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idtSetGate(47, (unsigned)irq15, 0x08, 0x8e);
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}
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#endif
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