From 99019721a9e147c49becc466c5427609b937aca8 Mon Sep 17 00:00:00 2001 From: Loic Guegan Date: Wed, 21 Apr 2021 18:54:50 +0200 Subject: Enable interrupts --- src/core/idt.hpp | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 src/core/idt.hpp (limited to 'src/core/idt.hpp') diff --git a/src/core/idt.hpp b/src/core/idt.hpp new file mode 100644 index 0000000..f2aca43 --- /dev/null +++ b/src/core/idt.hpp @@ -0,0 +1,33 @@ +#pragma once + +#include "types.hpp" +#include "libs/stdio.hpp" + +#define IDT_GATE_SIZE 16 +#define IDT_MAX_ENTRIES 50 +#define IDT_ADDR 0x200000 + +#define IDT_OPT_P (1 << 15) +#define IDT_OPT_TYPE_INT 0xE << 8 +#define IDT_OPT_PRVL_0 0 +#define IDT_OPT_PRVL_1 (1 << 13) +#define IDT_OPT_PRVL_2 (2 << 13) +#define IDT_OPT_PRVL_3 (3 << 13) + + + +typedef struct IDT_REGISTER { + u16 limit; + u64 base; +} __attribute__((packed)) IDT_REGISTER; + +typedef struct IDT_DESCRIPTOR { + u64 offset; + u16 selector; + u16 options; + u8 ist; + u32 ign; +} __attribute__((packed)) IDT_DESCRIPTOR; + +void idt_enable_interrupt(void); +void idt_write_descriptor(IDT_DESCRIPTOR desc, u16 index); \ No newline at end of file -- cgit v1.2.3