1 files changed, 117 insertions, 0 deletions
diff --git a/Source/Kernel/SyscallManager/IDT.wtf.asm b/Source/Kernel/SyscallManager/IDT.wtf.asm
new file mode 100644
index 0000000..b76d912
--- /dev/null
+++ b/Source/Kernel/SyscallManager/IDT.wtf.asm
@@ -0,0 +1,117 @@
+[GLOBAL idt_flush]
+
+idt_flush:
+  mov eax, [esp + 4]
+  lidt [eax]
+  ret
+
+; **********************************************************
+
+; stuff for handling interrupts
+[EXTERN interrupt_handler]
+
+%macro ISR_NOERRCODE 1
+  [GLOBAL isr%1]
+  isr%1:
+    cli
+    push byte 0
+    push byte %1
+    jmp interrupt_common_stub
+%endmacro
+
+%macro ISR_ERRCODE 1
+  [GLOBAL isr%1]
+  isr%1:
+    cli
+    push byte %1
+    jmp interrupt_common_stub
+%endmacro
+
+%macro IRQ 2
+  global irq%1
+  irq%1:
+    cli
+    push byte 0
+    push byte %2
+    jmp interrupt_common_stub
+%endmacro
+
+; ********************************************************************
+
+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
+
+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
+
+; ******************************************************************
+
+interrupt_common_stub:
+   pusha                    ; Pushes edi,esi,ebp,esp,ebx,edx,ecx,eax
+
+   mov ax, ds               ; Lower 16-bits of eax = ds.
+   push eax                 ; save the data segment descriptor
+
+   mov ax, 0x10  ; load the kernel data segment descriptor
+   mov ds, ax
+   mov es, ax
+   mov fs, ax
+   mov gs, ax
+
+   call interrupt_handler
+
+   pop eax        ; reload the original data segment descriptor
+   mov ds, ax
+   mov es, ax
+   mov fs, ax
+   mov gs, ax
+
+   popa                     ; Pops edi,esi,ebp...
+   add esp, 8     ; Cleans up the pushed error code and pushed ISR number
+   sti
+   iret 
+