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Code Issues Projects Releases Wiki Activity

Simplify stack_overflow test

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This commit is contained in:
Philipp Oppermann
2019-04-25 18:40:46 +02:00
parent ee3d2219ab
commit 70d981e179
1 changed files with 9 additions and 16 deletions
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25
tests/stack_overflow.rs
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@@ -5,6 +5,7 @@
use blog_os::{exit_qemu, serial_print, serial_println, QemuExitCode};
use core::panic::PanicInfo;
use lazy_static::lazy_static;
use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
#[no_mangle]
pub extern "C" fn _start() -> ! {
@@ -16,10 +17,7 @@ pub extern "C" fn _start() -> ! {
// trigger a stack overflow
stack_overflow();
serial_println!("[failed]");
serial_println!("Execution continued after stack overflow");
exit_qemu(QemuExitCode::Failed);
loop {}
panic!("Execution continued after stack overflow");
}
#[allow(unconditional_recursion)]
@@ -27,22 +25,12 @@ fn stack_overflow() {
stack_overflow(); // for each recursion, the return address is pushed
}
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
serial_println!("[failed]");
serial_println!("{}", info);
exit_qemu(QemuExitCode::Failed);
loop {}
}
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(double_fault_handler)
.set_handler_fn(test_double_fault_handler)
.set_stack_index(blog_os::gdt::DOUBLE_FAULT_IST_INDEX);
}
@@ -54,7 +42,7 @@ pub fn init_test_idt() {
TEST_IDT.load();
}
extern "x86-interrupt" fn double_fault_handler(
extern "x86-interrupt" fn test_double_fault_handler(
_stack_frame: &mut InterruptStackFrame,
_error_code: u64,
) {
@@ -62,3 +50,8 @@ extern "x86-interrupt" fn double_fault_handler(
exit_qemu(QemuExitCode::Success);
loop {}
}
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
blog_os::test_panic_handler(info)
}