rasp/tests/test_interrupts.asm

.section code 0x1000 {
    main:
        ; Test that interrupts will not called when enabled flag is not set
        ; (using 0x80 because anything below it is an error interrupt, and
        ;  invoking an error interrupt when disabled will cascade to a triple
        ;  fault)
        mov %status, 1
        int 0x80, 0
        cmpeq (count), 0
        jz end

        or %flags, 0b100

        ; Test divide by zero interrupts

        ; div
        add %status, 1
        mov %r0, 1
        div %r0, 0
        cmpeq (count), 1
        jz end

        ; idiv
        add %status, 1
        idiv %r0, 0
        cmpeq (count), 2
        jz end

        ; Test illegal memory address interrupts
        add %status, 1
        ; TODO - fix this bug, this line breaks because it's trying to
        ; calculate an address that's too large without using wrapping addition
        ; functions
        ;mov %status, (0xfffffffffffffff)
        mov %status, (0xffffffff)
        cmpeq (count), 3
        jz end

        mov %status, 0
    end:
        halt

    .align u64
    generic_handler:
        add (count), 1
        iret

    .export main
    .export generic_handler
}

.section ivt 0x1800 {
    ivt:
    .interrupt 0, 0
    .interrupt 0, 0
    .interrupt 1, generic_handler
    .interrupt 1, generic_handler
    .export ivt
}

.section shared 0x2000 {
    count: .u64 0
    .export count
}

.section stack 0x4000 .. 0x5000 {
    stack_base:
    .export stack_base
}

.meta {
    ip: main
    sp: stack_base
    ivt: ivt
}