#pragma once #include #define INTERRUPT_GATE_TYPE (0x8e) #define PIC_EOI (0x20) struct regs_32 { uint32_t edi; uint32_t esi; uint32_t ebp; uint32_t esp; uint32_t ebx; uint32_t edx; uint32_t ecx; uint32_t eax; }; // external interrupt handler function // stub in assembly MUST be called irqN #define SET_UP_IRQ(N, SELECTOR) \ extern void irq##N(); \ ptr_t addr_irq##N = (ptr_t)irq##N; \ SET_IDT_ENTRY(0x20 + (N), (addr_irq##N), (SELECTOR)); #define SET_IDT_ENTRY_FN(N, FUNC_NAME, SELECTOR) \ extern void FUNC_NAME(); \ ptr_t addr_##FUNC_NAME = (ptr_t)FUNC_NAME; \ SET_IDT_ENTRY((N), (addr_##FUNC_NAME), (SELECTOR)); #define SET_IDT_ENTRY(N, ADDR, SELECTOR) \ IDT[(N)].offset_low = (ADDR)&0x0000ffff; \ IDT[(N)].selector = (SELECTOR); \ IDT[(N)].zero = 0; \ IDT[(N)].type_attr = INTERRUPT_GATE_TYPE; \ IDT[(N)].offset_high = ((ADDR)&0xffff0000) >> 16 struct IDT_entry { uint16_t offset_low; uint16_t selector; uint8_t zero; uint8_t type_attr; uint16_t offset_high; }; #ifndef _INTERRUPT_C_ extern struct IDT_entry IDT[256]; #endif void init_idt(); // idt_descriptor: uint16_t[3] // [0] bit 0 :15 => limit // [1] bit 16:47 => address extern void asm_load_idt(uint16_t idt_descriptor[3]); void int13_handler( struct regs_32 s_regs, uint32_t error_code, ptr_t eip, uint16_t cs, uint32_t eflags); void irq0_handler(void); void irq1_handler(void); void irq2_handler(void); void irq3_handler(void); void irq4_handler(void); void irq5_handler(void); void irq6_handler(void); void irq7_handler(void); void irq8_handler(void); void irq9_handler(void); void irq10_handler(void); void irq11_handler(void); void irq12_handler(void); void irq13_handler(void); void irq14_handler(void); void irq15_handler(void);