src/kernel/gdt.c

@@ -40,9 +40,14 @@ void gdt_install()
 	gp.base = (unsigned int)&gdt;
 
 	gdt_set_gate(0, 0, 0, 0, 0);
-
+	
+	// Ring 0 code + data
 	gdt_set_gate(1, 0, 0xFFFFFFFF, 0x9A, 0xCF);
 	gdt_set_gate(2, 0, 0xFFFFFFFF, 0x92, 0xCF);
 
+	// Ring 3
+	gdt_set_gate(3, 0, 0xFFFFFFFF, 0xFA, 0xCF);
+	gdt_set_gate(4, 0, 0xFFFFFFFF, 0xF2, 0xCF);
+
 	gdt_flush();
 }

src/kernel/loader.s

@@ -49,225 +49,55 @@ idt_load:
 	lidt [idtp]
 	ret
 
-global isr0
-global isr1
-global isr2
-global isr3
-global isr4
-global isr5
-global isr6
-global isr7
-global isr8
-global isr9
-global isr10
-global isr11
-global isr12
-global isr13
-global isr14
-global isr15
-global isr16
-global isr17
-global isr18
-global isr19
-global isr20
-global isr21
-global isr22
-global isr23
-global isr24
-global isr25
-global isr26
-global isr27
-global isr28
-global isr29
-global isr30
-global isr31
+%macro ISR_NOERRCODE 1
+	global isr%1
+	isr%1:
+		cli
+		push byte 0
+		push byte %1
+		jmp isr_common_stub
+%endmacro
 
-; Interrupt service routine exceptions
-isr0:
-	cli
-	push byte 0
-	push byte 0
-	jmp isr_common_stub
+%macro ISR_ERRCODE 1
+	global isr%1
+	isr%1:
+		cli
+		push byte %1
+		jmp isr_common_stub
+%endmacro
 
-isr1:
-	cli
-	push byte 0
-	push byte 1
-	jmp isr_common_stub
-
-isr2:
-	cli
-	push byte 0
-	push byte 2
-	jmp isr_common_stub
-
-isr3:
-	cli
-	push byte 0
-	push byte 3
-	jmp isr_common_stub
-
-isr4:
-	cli
-	push byte 0
-	push byte 4
-	jmp isr_common_stub
-
-isr5:
-	cli
-	push byte 0
-	push byte 5
-	jmp isr_common_stub
-
-isr6:
-	cli
-	push byte 0
-	push byte 6
-	jmp isr_common_stub
-
-isr7:
-	cli
-	push byte 0
-	push byte 7
-	jmp isr_common_stub
-
-isr8:
-	cli
-	push byte 8
-	jmp isr_common_stub
-
-isr9:
-	cli
-	push byte 0
-	push byte 9
-	jmp isr_common_stub
-
-isr10:
-	cli
-	push byte 10
-	jmp isr_common_stub
-
-isr11:
-	cli
-	push byte 11
-	jmp isr_common_stub
-
-isr12:
-	cli
-	push byte 12
-	jmp isr_common_stub
-
-isr13:
-	cli
-	push byte 13
-	jmp isr_common_stub
-
-isr14:
-	cli
-	push byte 14
-	jmp isr_common_stub
-
-isr15:
-	cli
-	push byte 0
-	push byte 15
-	jmp isr_common_stub
-
-isr16:
-	cli
-	push byte 0
-	push byte 16
-	jmp isr_common_stub
-
-isr17:
-	cli
-	push byte 0
-	push byte 17
-	jmp isr_common_stub
-
-isr18:
-	cli
-	push byte 0
-	push byte 18
-	jmp isr_common_stub
-
-isr19:
-	cli
-	push byte 0
-	push byte 19
-	jmp isr_common_stub
-
-isr20:
-	cli
-	push byte 0
-	push byte 20
-	jmp isr_common_stub
-
-isr21:
-	cli
-	push byte 0
-	push byte 21
-	jmp isr_common_stub
-
-isr22:
-	cli
-	push byte 0
-	push byte 22
-	jmp isr_common_stub
-
-isr23:
-	cli
-	push byte 0
-	push byte 23
-	jmp isr_common_stub
-
-isr24:
-	cli
-	push byte 0
-	push byte 24
-	jmp isr_common_stub
-
-isr25:
-	cli
-	push byte 0
-	push byte 25
-	jmp isr_common_stub
-
-isr26:
-	cli
-	push byte 0
-	push byte 26
-	jmp isr_common_stub
-
-isr27:
-	cli
-	push byte 0
-	push byte 27
-	jmp isr_common_stub
-
-isr28:
-	cli
-	push byte 0
-	push byte 28
-	jmp isr_common_stub
-
-isr29:
-	cli
-	push byte 0
-	push byte 29
-	jmp isr_common_stub
-
-isr30:
-	cli
-	push byte 0
-	push byte 30
-	jmp isr_common_stub
-
-isr31:
-	cli
-	push byte 0
-	push byte 31
-	jmp isr_common_stub
+ISR_NOERRCODE 0
+ISR_NOERRCODE 1
+ISR_NOERRCODE 2
+ISR_NOERRCODE 3
+ISR_NOERRCODE 4
+ISR_NOERRCODE 5
+ISR_NOERRCODE 6
+ISR_NOERRCODE 7
+ISR_ERRCODE 8
+ISR_NOERRCODE 9
+ISR_ERRCODE 10
+ISR_ERRCODE 11
+ISR_ERRCODE 12
+ISR_ERRCODE 13
+ISR_ERRCODE 14
+ISR_NOERRCODE 15
+ISR_NOERRCODE 16
+ISR_NOERRCODE 17
+ISR_NOERRCODE 18
+ISR_NOERRCODE 19
+ISR_NOERRCODE 20
+ISR_NOERRCODE 21
+ISR_NOERRCODE 22
+ISR_NOERRCODE 23
+ISR_NOERRCODE 24
+ISR_NOERRCODE 25
+ISR_NOERRCODE 26
+ISR_NOERRCODE 27
+ISR_NOERRCODE 28
+ISR_NOERRCODE 29
+ISR_NOERRCODE 30
+ISR_NOERRCODE 31
 
 extern fault_handler
 
@@ -295,118 +125,31 @@ isr_common_stub:
 	add esp, 8
 	iret
 
-global irq0
-global irq1
-global irq2
-global irq3
-global irq4
-global irq5
-global irq6
-global irq7
-global irq8
-global irq9
-global irq10
-global irq11
-global irq12
-global irq13
-global irq14
-global irq15
+%macro IRQ 2
+	global irq%1
+	irq%1:
+		cli
+		push byte 0
+		push byte %2
+		jmp irq_common_stub
+%endmacro
 
-irq0:
-	cli
-	push byte 0
-	push byte 32
-	jmp irq_common_stub
-
-irq1:
-	cli
-	push byte 0
-	push byte 33
-	jmp irq_common_stub
-
-irq2:
-	cli
-	push byte 0
-	push byte 34
-	jmp irq_common_stub
-
-irq3:
-	cli
-	push byte 0
-	push byte 35
-	jmp irq_common_stub
-
-irq4:
-	cli
-	push byte 0
-	push byte 36
-	jmp irq_common_stub
-
-irq5:
-	cli
-	push byte 0
-	push byte 37
-	jmp irq_common_stub
-
-irq6:
-	cli
-	push byte 0
-	push byte 38
-	jmp irq_common_stub
-
-irq7:
-	cli
-	push byte 0
-	push byte 39
-	jmp irq_common_stub
-
-irq8:
-	cli
-	push byte 0
-	push byte 40
-	jmp irq_common_stub
-
-irq9:
-	cli
-	push byte 0
-	push byte 41
-	jmp irq_common_stub
-
-irq10:
-	cli
-	push byte 0
-	push byte 42
-	jmp irq_common_stub
-
-irq11:
-	cli
-	push byte 0
-	push byte 43
-	jmp irq_common_stub
-
-irq12:
-	cli
-	push byte 0
-	push byte 44
-	jmp irq_common_stub
-
-irq13:
-	cli
-	push byte 0
-	push byte 45
-	jmp irq_common_stub
-
-irq14:
-	cli
-	push byte 0
-	push byte 46
-	jmp irq_common_stub
-
-irq15:
-	cli
-	push byte 0
-	push byte 47
-	jmp irq_common_stub
+IRQ	0,	32
+IRQ	1,	33
+IRQ	2,	34
+IRQ	3,	35
+IRQ	4,	36
+IRQ	5,	37
+IRQ	6,	38
+IRQ	7,	39
+IRQ	8,	40
+IRQ	9,	41
+IRQ	10,	42
+IRQ	11,	43
+IRQ	12,	44
+IRQ	13,	45
+IRQ	14,	46
+IRQ	15,	47
 
 extern irq_handler