extern idt_exception_handler
global isr_stub_table

%macro PUSHALL 0
    push rbx
    push rcx
    push rdx
    push rsi
    push rdi
    push r8
    push r9
    push r10
    push r11
    push r12
    push r13
    push r14
    push r15
%endmacro

%macro POPALL 0
    pop r15
    pop r14
    pop r13
    pop r12
    pop r11
    pop r10
    pop r9
    pop r8
    pop rdi
    pop rsi
    pop rdx
    pop rcx
    pop rbx
%endmacro

; call the exception handler with the interrupt number
; args: interrupt number
%macro ISRException 1
align 8
isr_stub_%+%1:
    PUSHALL
    cld
    mov rdi, %1
    mov rsi, 0
    call idt_exception_handler
    POPALL
    iretq
%endmacro

; call the exception handler with the interrupt number
; these exceptions also put an error code on the stack
; args: interrupt number
%macro ISRExceptionCode 1
align 8
isr_stub_%+%1:
    PUSHALL
    cld
    mov rdi, %1
    pop rsi
    call idt_exception_handler
    POPALL
    iretq
%endmacro

; do nothing
; args: interrupt number
%macro ISRIgnore 1
align 8
isr_stub_%+%1:
    iretq
%endmacro

; isr stubs
section .text
bits 64

ISRException 0
ISRException 1
ISRException 2
ISRException 3
ISRException 4
ISRException 5
ISRException 6
ISRException 7
ISRExceptionCode 8
ISRException 9
ISRExceptionCode 10
ISRExceptionCode 11
ISRExceptionCode 12
ISRExceptionCode 13
ISRExceptionCode 14
ISRException 15
ISRException 16
ISRExceptionCode 17
ISRException 18
ISRException 19
ISRException 20
ISRExceptionCode 21
ISRException 22
ISRException 23
ISRException 24
ISRException 25
ISRException 26
ISRException 27
ISRException 28
ISRExceptionCode 29
ISRExceptionCode 30
ISRException 31

%assign i 32

; ignore other interrupts
%rep 0x100 - i
    ISRIgnore i
    %assign i i+1
%endrep

; isr stub table
section .rodata
bits 64
align 16

isr_stub_table:
%assign i 0
%rep 256
    dq isr_stub_%+i
%assign i i+1
%endrep