feature: start to implement keyboard handler and better isrs/irqs

src/interrupt/irq.s

@@ -1,45 +1,137 @@
 .intel_syntax noprefix
 .extern irq_handler
 
-.macro irq_common_stub nb
-irq_stub_\nb:
-	mov bl, \nb
-	call irq_handler
-	iret 
-.endm
+irq_common_stub:
+    // push general purpose registers
+    pusha
 
-irq_common_stub 0
-irq_common_stub 1
-irq_common_stub 2
-irq_common_stub 3
-irq_common_stub 4
-irq_common_stub 5
-irq_common_stub 6
-irq_common_stub 7
-irq_common_stub 8
-irq_common_stub 9
-irq_common_stub 10
-irq_common_stub 11
-irq_common_stub 12
-irq_common_stub 13
-irq_common_stub 14
-irq_common_stub 15
+    // push data segment selector
+    mov ax, ds
+    push eax
+
+    // use kernel data segment
+    mov ax, 0x10
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    // hand over stack to C function
+    push esp
+    // and call it
+    call irq_handler
+    // pop stack pointer again
+    pop eax
+
+    // restore original segment pointers segment
+    pop eax
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+
+    // restore registers
+    popa
+
+    // remove int_no and err_code from stack
+    add esp, 8
+
+    iret
+
+irq0:
+	push 0
+	push 32
+	jmp irq_common_stub
+
+irq1:
+	push 1
+	push 33
+	jmp irq_common_stub
+
+irq2:
+	push 2
+	push 34
+	jmp irq_common_stub
+
+irq3:
+	push 3
+	push 35
+	jmp irq_common_stub
+
+irq4:
+	push 4
+	push 36
+	jmp irq_common_stub
+
+irq5:
+	push 5
+	push 37
+	jmp irq_common_stub
+
+irq6:
+	push 6
+	push 38
+	jmp irq_common_stub
+
+irq7:
+	push 7
+	push 39
+	jmp irq_common_stub
+
+irq8:
+	push 8
+	push 40
+	jmp irq_common_stub
+
+irq9:
+	push 9
+	push 41
+	jmp irq_common_stub
+
+irq10:
+	push 10
+	push 42
+	jmp irq_common_stub
+
+irq11:
+	push 11
+	push 43
+	jmp irq_common_stub
+
+irq12:
+	push 12
+	push 44
+	jmp irq_common_stub
+
+irq13:
+	push 13
+	push 45
+	jmp irq_common_stub
+
+irq14:
+	push 14
+	push 46
+	jmp irq_common_stub
+
+irq15:
+	push 15
+	push 47
+	jmp irq_common_stub
 
 .global irq_stub_table
 irq_stub_table:
-	.long irq_stub_0
-	.long irq_stub_1
-	.long irq_stub_2
-	.long irq_stub_3
-	.long irq_stub_4
-	.long irq_stub_5
-	.long irq_stub_6
-	.long irq_stub_7
-	.long irq_stub_8
-	.long irq_stub_9
-	.long irq_stub_10
-	.long irq_stub_11
-	.long irq_stub_12
-	.long irq_stub_13
-	.long irq_stub_14
-	.long irq_stub_15
+	.long irq0
+	.long irq1
+	.long irq2
+	.long irq3
+	.long irq4
+	.long irq5
+	.long irq6
+	.long irq7
+	.long irq8
+	.long irq9
+	.long irq10
+	.long irq11
+	.long irq12
+	.long irq13
+	.long irq14
+	.long irq15