use x86_64::structures::idt::{InterruptStackFrame, PageFaultErrorCode};

pub extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut InterruptStackFrame) {
    panic!(
        "BREAKPOINT at {:x} Flags: {:b} Stack: {:x}",
        stack_frame.instruction_pointer.as_u64(),
        stack_frame.cpu_flags,
        stack_frame.stack_pointer.as_u64()
    );
}

pub extern "x86-interrupt" fn page_fault_handler(
    stack_frame: &mut InterruptStackFrame,
    error_code: PageFaultErrorCode,
) {
    use x86_64::registers::control::Cr2;

    panic!(
        "PAGE FAULT while accessing address: {:x}{:?}Flags: {:b} Stack: {:x}",
        Cr2::read().as_u64(),
        error_code,
        stack_frame.cpu_flags,
        stack_frame.stack_pointer.as_u64()
    );
}

pub extern "x86-interrupt" fn segment_not_present_handler(
    stack_frame: &mut InterruptStackFrame,
    error_code: u64,
) {
    panic!(
        "SEGMENT NOT PRESENT: {:?}Flags: {:b} Stack: {:x}",
        error_code,
        stack_frame.cpu_flags,
        stack_frame.stack_pointer.as_u64()
    );
}

pub extern "x86-interrupt" fn double_fault_handler(
    stack_frame: &mut InterruptStackFrame,
    _error_code: u64, // code is always zero
) {
    panic!(
        "DOUBLE FAULT Flags: {:b} Stack: {:x}",
        stack_frame.cpu_flags,
        stack_frame.stack_pointer.as_u64()
    );
}