.code32 

.macro ISR_NOERRCODE num
.global isr\num
isr\num:
    pushl $0           
    pushl $\num        
    jmp isr_common_stub
.endm

.macro ISR_ERRCODE num
.global isr\num
isr\num:
    pushl $\num       
    jmp isr_common_stub
.endm

.extern common_interrupt_handler
isr_common_stub:
    pushal             

    pushl %esp         
    call common_interrupt_handler
    addl $4, %esp      

    popal              
    addl $8, %esp      
    iret            

.extern idtr
.global load_idt
load_idt:
    lidt idtr 
    ret

.global enable_int
enable_int:
    sti
    ret

ISR_NOERRCODE 0    # Divide by Zero
ISR_NOERRCODE 1    # Debug
ISR_ERRCODE   8    # Double Fault (Has Error Code!)
ISR_ERRCODE   13   # General Protection Fault (Has Error Code!)
ISR_ERRCODE   14   # Page Fault (Has Error Code!)

ISR_NOERRCODE 32   # IRQ0 - Timer
ISR_NOERRCODE 33   # IRQ1 - Keyboard

ISR_NOERRCODE 46   # IRQ14
ISR_NOERRCODE 47   # IRQ15