Possibly deprecate x86-interrupt CC

src/kernel/arch/x86_64/interrupts.rs

@@ -4,14 +4,13 @@
 use lazy_static::lazy_static;
 use x86_64::structures::idt::*;
 
-use crate::format;
-
 lazy_static! {
     pub static ref IDT: InterruptDescriptorTable = {
-        let mut idt = InterruptDescriptorTable::new();
+        let idt = InterruptDescriptorTable::new();
         // TODO: Re-implement this once the x86-interrupt ABI is fixed.
+        // Alternatively: Write our own interrupt handler wrappers.
         //idt.double_fault.set_handler_fn(double_fault);
-        idt.page_fault.set_handler_fn(page_fault);
+        //idt.page_fault.set_handler_fn(page_fault);
         idt
     };
 }
@@ -20,6 +19,7 @@ lazy_static! {
 //    crate::interrupt::double_fault(&format!("{info:#?}"));
 //}
 
+/* 
 #[allow(dead_code)]
 extern "x86-interrupt" fn page_fault(info: InterruptStackFrame, errcode: PageFaultErrorCode) {
     if errcode.contains(PageFaultErrorCode::USER_MODE) {
@@ -37,7 +37,9 @@ extern "x86-interrupt" fn page_fault(info: InterruptStackFrame, errcode: PageFau
                 core::arch::asm! {"mov {}, cr2", out(reg) a};
                 a
             };
-            crate::interrupt::page_fault(addr, &format!("{info:#?}"))
+            let info_formatted = format!("{info:#?}");
+            crate::interrupt::page_fault(addr, info_formatted.as_str().as_ptr(), info_formatted.as_str().len())
         }
     }
-}
+} 
+*/

src/kernel/interrupt/mod.rs

@@ -1,11 +1,16 @@
 // Copyright (c) 2025 shibedrill
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#[allow(dead_code)]
-pub fn double_fault(info: &str) -> ! {
-    panic!("Double fault: {}", info);
+use core::str;
+
+#[unsafe(no_mangle)]
+extern "C" fn double_fault(info: *const u8, info_len: usize) -> ! {
+    let info_slice = unsafe {&str::from_raw_parts(info, info_len)};
+    panic!("Double fault: {}", info_slice);
 }
 
-pub fn page_fault(addr: usize, info: &str) -> ! {
-    panic!("Page fault at 0x{:X}: {}", addr, info);
+#[unsafe(no_mangle)]
+pub extern "C" fn page_fault(addr: usize, info: *const u8, info_len: usize) -> ! {
+    let info_slice = unsafe { &str::from_raw_parts(info, info_len) };
+    panic!("Page fault at 0x{:X}: {}", addr, info_slice);
 }

src/kernel/main.rs

@@ -4,7 +4,7 @@
 #![no_std]
 #![no_main]
 #![feature(allocator_api)]
-#![feature(abi_x86_interrupt)]
+#![feature(str_from_raw_parts)]
 
 mod arch;
 mod boot;