feature: start to implements isrs

headers/interrupts.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void exception_handler(void);

src/interrupt/handler.c

@@ -0,0 +1,77 @@
+#include "interrupts.h"
+#include "kprintf.h"
+
+#include <stdint.h>
+
+void exception_handler(void)
+{
+	int8_t index = -1;
+	__asm__ volatile("movb %%al, %0" ::"m"(index));
+
+	kprintf(KERN_CRIT "interrupt: ");
+	switch (index) {
+	case 0:
+		kprintf(KERN_CRIT "division by zero");
+		break;
+	case 1:
+		kprintf(KERN_CRIT "debugger");
+		break;
+	case 2:
+		kprintf(KERN_CRIT "NMI");
+		break;
+	case 3:
+		kprintf(KERN_CRIT "breakpoint");
+		break;
+	case 4:
+		kprintf(KERN_CRIT "overflow");
+		break;
+	case 5:
+		kprintf(KERN_CRIT "bounds");
+		break;
+	case 6:
+		kprintf(KERN_CRIT "invalid opcode");
+		break;
+	case 7:
+		kprintf(KERN_CRIT "coprocessor not available");
+		break;
+	case 8:
+		kprintf(KERN_CRIT "double fault");
+		break;
+	case 9:
+		kprintf(KERN_CRIT "coprocessor segement overrun");
+		break;
+	case 10:
+		kprintf(KERN_CRIT "invalid task state segment");
+		break;
+	case 11:
+		kprintf(KERN_CRIT "segment not present");
+		break;
+	case 12:
+		kprintf(KERN_CRIT "stack fault");
+		break;
+	case 13:
+		kprintf(KERN_CRIT "general protection fault");
+		break;
+	case 14:
+		kprintf(KERN_CRIT "page fault");
+		break;
+	case 15:
+		kprintf(KERN_CRIT "reserved");
+		break;
+	case 16:
+		kprintf(KERN_CRIT "math fault");
+		break;
+	case 17:
+		kprintf(KERN_CRIT "alignment check");
+		break;
+	case 18:
+		kprintf(KERN_CRIT "machine check");
+		break;
+	case 19:
+		kprintf(KERN_CRIT "SIMD floating point exception");
+		break;
+	default:
+		break;
+	}
+	kprintf(KERN_CRIT "\n");
+}

src/interrupt/idt.c

@@ -33,4 +33,4 @@ void init_idt(void)
 {
 	idtr.size = 8 * IDT_SIZE - 1;
 	idtr.offset = (uint32_t)&idt_entries;
-}
+}

src/interrupt/isr.s

@@ -0,0 +1,82 @@
+.intel_syntax noprefix
+.extern exception_handler
+
+.macro isr_err_stub nb
+isr_stub_\nb:
+    call exception_handler
+    iret 
+.endm
+
+.macro isr_no_err_stub nb
+isr_stub_\nb:
+    call exception_handler
+    iret
+.endm
+
+isr_no_err_stub 0
+isr_no_err_stub 1
+isr_no_err_stub 2
+isr_no_err_stub 3
+isr_no_err_stub 4
+isr_no_err_stub 5
+isr_no_err_stub 6
+isr_no_err_stub 7
+isr_err_stub    8
+isr_no_err_stub 9
+isr_err_stub    10
+isr_err_stub    11
+isr_err_stub    12
+isr_err_stub    13
+isr_err_stub    14
+isr_no_err_stub 15
+isr_no_err_stub 16
+isr_err_stub    17
+isr_no_err_stub 18
+isr_no_err_stub 19
+isr_no_err_stub 20
+isr_no_err_stub 21
+isr_no_err_stub 22
+isr_no_err_stub 23
+isr_no_err_stub 24
+isr_no_err_stub 25
+isr_no_err_stub 26
+isr_no_err_stub 27
+isr_no_err_stub 28
+isr_no_err_stub 29
+isr_err_stub    30
+isr_no_err_stub 31
+
+.global isr_stub_table
+isr_stub_table:
+	.long isr_stub_0
+	.long isr_stub_1
+	.long isr_stub_2
+	.long isr_stub_3
+	.long isr_stub_4
+	.long isr_stub_5
+	.long isr_stub_6
+	.long isr_stub_7
+	.long isr_stub_8
+	.long isr_stub_9
+	.long isr_stub_10
+	.long isr_stub_11
+	.long isr_stub_12
+	.long isr_stub_13
+	.long isr_stub_14
+	.long isr_stub_15
+	.long isr_stub_16
+	.long isr_stub_17
+	.long isr_stub_18
+	.long isr_stub_19
+	.long isr_stub_20
+	.long isr_stub_21
+	.long isr_stub_22
+	.long isr_stub_23
+	.long isr_stub_24
+	.long isr_stub_25
+	.long isr_stub_26
+	.long isr_stub_27
+	.long isr_stub_28
+	.long isr_stub_29
+	.long isr_stub_30
+	.long isr_stub_31

src/power/halt.c

@@ -1,4 +1,4 @@
 void halt(void)
 {
-	asm volatile("hlt");
+	__asm__ volatile("hlt");
 }

src/power/reboot.c

@@ -19,7 +19,7 @@ void reboot(void)
 {
 	uint8_t tmp;
 
-	asm volatile("cli"); /* disable all interrupts */
+	__asm__ volatile("cli"); /* disable all interrupts */
 	do {
 		tmp = inb(KBD_INTERFACE); /* empty user data */
 		if (check_flag(tmp, KBD_BIT_KDATA))
@@ -27,6 +27,6 @@ void reboot(void)
 	} while (check_flag(tmp, KBD_BIT_UDATA));
 	outb(KBD_INTERFACE, KBD_RESET); /* pulse CPU reset line */
 loop:
-	asm volatile("hlt");
+	__asm__ volatile("hlt");
 	goto loop;
-}
+}