1 files changed, 126 insertions, 0 deletions
diff --git a/asm/int.s b/asm/int.s
new file mode 100644
index 0000000..49efb35
--- /dev/null
+++ b/asm/int.s
@@ -0,0 +1,126 @@
+.global int0
+.global int1
+.global int2
+.global int3
+.global int4
+.global int5
+.global int6
+.global int7
+
+.global int8
+.global int9
+.global int10
+.global int11
+.global int12
+.global int13
+.global int14
+.global int15
+
+.global int128
+
+// nothing to ack
+.macro ack0
+.endm
+
+// ack master
+.macro ack1
+    push %eax // persist
+    mov $0x20,%al
+    out %al,$0x20   
+    pop %eax // load original
+.endm
+
+// ack master and servant
+.macro ack2
+    push %eax // persist
+    mov $0x20,%al
+    out %al,$0xa0 // slave
+    out %al,$0x20 // master
+    pop %eax // load original
+.endm
+
+.macro intx ack num func
+
+    \ack
+
+    pusha          //Push all standard registers 8 regs x 4bytes/32bit
+    push %ds       //Push data segment
+    push %es       //etc...
+    push %fs
+    push %gs
+
+    mov %esp,%eax
+
+    and $-16,%esp       // padding to align stack on 16byte boundary before CALL
+    push \num
+    push \num
+
+    push \num
+    push %eax            // pass in original %esp
+
+    call \func   
+
+    mov  %eax,%esp               // use %esp we got
+
+    pop %gs
+    pop %fs
+    pop %es
+    pop %ds
+    popa           
+
+    iret // pops the return instruction pointer, return code segment selector, and EFLAGS image from the stack
+
+.endm
+
+int0: intx ack1 $0 pit_handler
+int1: intx ack1 $1 kb_handler
+int2: intx ack1 $2 interrupt_handler
+int3: intx ack1 $3 interrupt_handler
+int4: intx ack1 $4 interrupt_handler
+int5: intx ack1 $5 interrupt_handler
+int6: intx ack1 $6 interrupt_handler
+int7: intx ack1 $7 interrupt_handler
+
+int8: intx ack2 $8 interrupt_handler
+int9: intx ack2 $9 interrupt_handler
+int10: intx ack2 $10 interrupt_handler
+int11: intx ack2 $11 interrupt_handler
+int12: intx ack2 $12 mouse_handler
+int13: intx ack2 $13 interrupt_handler
+int14: intx ack2 $14 interrupt_handler
+int15: intx ack2 $15 interrupt_handler
+
+int128: intx ack0 $128 interrupt_handler
+
+pit_handler:
+    call pit_interrupt_handler
+    push $0
+    push 8(%esp)
+    push 16(%esp)
+    call interrupt_handler
+    add $12,%esp 
+    ret
+
+kb_handler:
+    push %eax
+    mov $0x0,%eax
+    in  $0x60,%al
+    pop %eax
+    push $0
+    push 8(%esp)
+    push 16(%esp)
+    call interrupt_handler
+    add $12,%esp 
+    ret
+
+mouse_handler:
+    push %eax
+    mov $0x0,%eax
+    in  $0x60,%al
+    pop %eax
+    push $0
+    push 8(%esp)
+    push 16(%esp)
+    call interrupt_handler
+    add $12,%esp 
+    ret