#![no_std]
#![no_main]
#![feature(abi_x86_interrupt)]
use core::panic::PanicInfo;
use lazy_static::lazy_static;
use libertyos_kernel::{exitqemu, QEMUExitCode, serprint, serprintln};
use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
lazy_static!
{
static ref TEST_IDT: InterruptDescriptorTable =
{
let mut idt = InterruptDescriptorTable::new();
unsafe
{
idt.double_fault
.set_handler_fn(test_double_fault_handler)
.set_stack_index(libertyos_kernel::gdt::DOUBLEFAULT_IST_IDX);
}
idt
};
}
pub fn init_test_idt()
{
TEST_IDT.load();
}
extern "x86-interrupt" fn test_double_fault_handler(_stackframe: InterruptStackFrame, _errcode: u64) -> !
{
serprintln!("[SUCCESS]");
exitqemu(QEMUExitCode::Success);
loop {}
}
#[no_mangle]
pub extern "C" fn _start() -> !
{
serprint!("STACKOVERFLOW::STACK_OVERFLOW...\t");
libertyos_kernel::gdt::init();
init_test_idt();
stackoverflow();
panic!("[MSG] EXEC CONTINUED AFTER STACK OVERFLOW");
}
#[allow(unconditional_recursion)]
fn stackoverflow()
{
stackoverflow();
volatile::Volatile::new(0).read();
}
#[panic_handler]
fn panic(info: &PanicInfo) -> !
{
libertyos_kernel::test_panic_handler(info)
}