Basic-OS/isr.h at main · mrpillowofthefan1/Basic-OS · GitHub

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#pragma once

#include <stdint.h>

/* ISRs reserved for CPU exceptions */
extern void isr0();

extern void isr1();

extern void isr2();

extern void isr3();

extern void isr4();

extern void isr5();

extern void isr6();

extern void isr7();

extern void isr8();

extern void isr9();

extern void isr10();

extern void isr11();

extern void isr12();

extern void isr13();

extern void isr14();

extern void isr15();

extern void isr16();

extern void isr17();

extern void isr18();

extern void isr19();

extern void isr20();

extern void isr21();

extern void isr22();

extern void isr23();

extern void isr24();

extern void isr25();

extern void isr26();

extern void isr27();

extern void isr28();

extern void isr29();

extern void isr30();

extern void isr31();

/* IRQ definitions */
extern void irq0();

extern void irq1();

extern void irq2();

extern void irq3();

extern void irq4();

extern void irq5();

extern void irq6();

extern void irq7();

extern void irq8();

extern void irq9();

extern void irq10();

extern void irq11();

extern void irq12();

extern void irq13();

extern void irq14();

extern void irq15();

#define IRQ0 32
#define IRQ1 33
#define IRQ2 34
#define IRQ3 35
#define IRQ4 36
#define IRQ5 37
#define IRQ6 38
#define IRQ7 39
#define IRQ8 40
#define IRQ9 41
#define IRQ10 42
#define IRQ11 43
#define IRQ12 44
#define IRQ13 45
#define IRQ14 46
#define IRQ15 47

/* Struct which aggregates many registers.
 * It matches exactly the pushes on interrupt.asm. From the bottom:
 * - Pushed by the processor automatically
 * - `push byte`s on the isr-specific code: error code, then int number
 * - All the registers by pusha
 * - `push eax` whose lower 16-bits contain DS
 */
typedef struct {
    uint32_t ds; /* Data segment selector */
    uint32_t edi, esi, ebp, esp, ebx, edx, ecx, eax; /* Pushed by pusha. */
    uint32_t int_no, err_code; /* Interrupt number and error code (if applicable) */
    uint32_t eip, cs, eflags, useresp, ss; /* Pushed by the processor automatically */
} registers_t;

void isr_install();

void isr_handler(registers_t *r);

typedef void (*isr_t)(registers_t *);

void register_interrupt_handler(uint8_t n, isr_t handler);