From 912d2e3c7eb1baa71dda2c0a28aa5809eaa96f27 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 16 Jul 2022 13:33:00 +0200
Subject: amd64: barely boot into kernel code

---
 src/kernel/arch/i386/interrupts/idt.c | 68 -----------------------------------
 1 file changed, 68 deletions(-)
 delete mode 100644 src/kernel/arch/i386/interrupts/idt.c

(limited to 'src/kernel/arch/i386/interrupts/idt.c')

diff --git a/src/kernel/arch/i386/interrupts/idt.c b/src/kernel/arch/i386/interrupts/idt.c
deleted file mode 100644
index cd2adfd..0000000
--- a/src/kernel/arch/i386/interrupts/idt.c
+++ /dev/null
@@ -1,68 +0,0 @@
-#include <kernel/arch/i386/gdt.h>
-#include <kernel/arch/i386/interrupts/idt.h>
-#include <kernel/arch/i386/interrupts/isr.h>
-#include <kernel/panic.h>
-#include <stdbool.h>
-#include <stdint.h>
-
-struct idt_entry {
-	uint16_t offset_low   ;
-	uint16_t code_seg     ;
-	uint8_t  zero         ; // unused, has to be 0
-	uint8_t  type      : 4; // 16/32 bit, task/interrupt/task gate
-	uint8_t  storage   : 1; // 0 for interrupt/trap gates
-	uint8_t  ring      : 2;
-	uint8_t  present   : 1;
-	uint16_t offset_high  ;
-} __attribute__((packed));
-
-// is exactly the same as lgdt_arg, i should combine them into a single struct
-// later
-struct lidt_arg {
-	uint16_t limit;
-	uint32_t base;
-} __attribute__((packed));
-
-__attribute__((section(".shared")))
-static struct idt_entry IDT[256];
-static struct lidt_arg lidt_arg;
-
-static void idt_prepare(void);
-static void idt_load(void);
-static void idt_test(void);
-
-
-static void idt_prepare(void) {
-	uintptr_t offset;
-	for (int i = 0; i < 256; i++) {
-		offset = (uintptr_t) &_isr_stubs + i * 8;
-
-		IDT[i] = (struct idt_entry) {
-			.offset_low  = offset,
-			.offset_high = offset >> 16,
-			.code_seg    = SEG_r0code << 3,
-			.zero        = 0,
-			.present     = 1,
-			.ring        = 0,
-			.storage     = 0,
-			.type        = 0xE, // 32-bit interrupt gate
-		};
-	}
-}
-
-static void idt_load(void) {
-	lidt_arg.limit = sizeof(IDT) - 1;
-	lidt_arg.base = (uintptr_t) &IDT;
-	asm("lidt (%0)" : : "r" (&lidt_arg) : "memory");
-}
-
-static void idt_test(void) {
-	asm("int $0x34" : : : "memory");
-	assert(isr_test_interrupt_called);
-}
-
-void idt_init(void) {
-	idt_prepare();
-	idt_load();
-	idt_test();
-}
-- 
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