isr_flush.s

.section .text
.align 4

.macro ISR_NO_ERR index
    .global isr\index
    isr\index:
        cli
        push $0
        push $\index
        jmp isr_flush
.endm

.macro ISR_ERR index
    .global isr\index
    isr\index:
        cli
        push $\index
        jmp isr_flush
.endm


ISR_NO_ERR 0    # Division By Zero Exception
ISR_NO_ERR 1    # Debug Exception
ISR_NO_ERR 2    # Non Maskable Interrupt Exception
ISR_NO_ERR 3    # Breakpoint Exception
ISR_NO_ERR 4    # Into Detected Overflow Exception
ISR_NO_ERR 5    # Out of Bounds Exception
ISR_NO_ERR 6    # Invalid Opcode Exception
ISR_NO_ERR 7    # No Coprocessor Exception
ISR_ERR 8       # Double Fault Exception
ISR_NO_ERR 9    # Coprocessor Segment Overrun Exception
ISR_ERR 10      # Bad TSS Exception
ISR_ERR 11      # Segment Not Present Exception 
ISR_ERR 12      # Stack Fault Exception
ISR_ERR 13      # General Protection Fault Exception
ISR_ERR 14      # Page Fault Exception
ISR_NO_ERR 15   # Unknown Interrupt Exception
ISR_NO_ERR 16   # Coprocessor Fault Exception
ISR_NO_ERR 17   # Alignment Check Exception
ISR_NO_ERR 18   # Machine Check Exception

ISR_NO_ERR 19   # Other
ISR_NO_ERR 20
ISR_NO_ERR 21
ISR_NO_ERR 22
ISR_NO_ERR 23
ISR_NO_ERR 24
ISR_NO_ERR 25
ISR_NO_ERR 26
ISR_NO_ERR 27
ISR_NO_ERR 28
ISR_NO_ERR 29
ISR_NO_ERR 30
ISR_NO_ERR 31
ISR_NO_ERR 128   # 80h syscall


isr_flush:
    pusha
    push %ds
    push %es
    push %fs
    push %gs

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

    mov %esp, %eax
    push %eax
    mov $fault_handler, %eax

    call *%eax
    pop %eax

    pop %gs
    pop %fs
    pop %es
    pop %ds
    popa

    add $8, %esp
    iret