[bits 32]
global isr_stub_table
global isr0, isr1, isr2, isr3, isr4, isr5, isr6, isr7
global isr8, isr9, isr10, isr11, isr12, isr13, isr14, isr15
global isr16, isr17, isr18, isr19, isr20, isr21, isr22, isr23
global isr24, isr25, isr26, isr27, isr28, isr29, isr30, isr31

extern isr_handler
extern _push_regs
extern _pop_regs

%macro ISR_NOERR 1
isr%1:
    cli
    push dword 0         ; Fake error code
    push dword %1        ; Interrupt number
    jmp isr_common_stub
%endmacro

%macro ISR_ERR 1
isr%1:
    cli
    push dword %1        ; Interrupt number
    jmp isr_common_stub
%endmacro

; ISRs 0-31 (exceptions)
ISR_NOERR 0
ISR_NOERR 1
ISR_NOERR 2
ISR_NOERR 3
ISR_NOERR 4
ISR_NOERR 5
ISR_NOERR 6
ISR_NOERR 7
ISR_ERR   8     ; Double fault
ISR_NOERR 9
ISR_ERR  10     ; Invalid TSS
ISR_ERR  11     ; Segment not present
ISR_ERR  12     ; Stack segment fault
ISR_ERR  13     ; General protection fault
ISR_ERR  14     ; Page fault
ISR_NOERR 15
ISR_NOERR 16
ISR_NOERR 17
ISR_NOERR 18
ISR_NOERR 19
ISR_NOERR 20
ISR_NOERR 21
ISR_NOERR 22
ISR_NOERR 23
ISR_NOERR 24
ISR_NOERR 25
ISR_NOERR 26
ISR_NOERR 27
ISR_NOERR 28
ISR_NOERR 29
ISR_ERR  30     ; Security exception
ISR_NOERR 31

isr_common_stub:
    call _push_regs
    push ds
    push es
    push fs
    push gs

    mov ax, 0x10
    mov ds, ax
    mov es, ax
    mov fs, ax
    mov gs, ax

    push esp
    call isr_handler
    add esp, 4

    pop gs
    pop fs
    pop es
    pop ds
    call _pop_regs
    add esp, 8
    sti
    iret