From 6590a5acfee33bae3ca0431c8af09768248fe405 Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Fri, 15 Nov 2019 20:21:25 +0100
Subject: Rename interrupt and exception handlers

---
 kernel/src/interrupts/exceptions.rs | 95 -------------------------------------
 1 file changed, 95 deletions(-)
 delete mode 100644 kernel/src/interrupts/exceptions.rs

(limited to 'kernel/src/interrupts/exceptions.rs')

diff --git a/kernel/src/interrupts/exceptions.rs b/kernel/src/interrupts/exceptions.rs
deleted file mode 100644
index a3ecf9d..0000000
--- a/kernel/src/interrupts/exceptions.rs
+++ /dev/null
@@ -1,95 +0,0 @@
-use super::Interrupts;
-use crate::io::qemu;
-use x86_64::structures::idt::{InterruptStackFrame, PageFaultErrorCode};
-
-macro_rules! exception_default {
-    ($stack_frame: expr) => {
-        format_args!(
-            "instruction addr: 0x{:08x}\nstack addr: 0x{:08x}\nflags: 0x{:x}",
-            $stack_frame.instruction_pointer.as_u64(),
-            $stack_frame.stack_pointer.as_u64(),
-            $stack_frame.cpu_flags,
-        )
-    };
-}
-
-static mut expected_fault: Interrupts = Interrupts::None;
-
-pub unsafe fn expect_fault(int: Interrupts) {
-    if expected_fault == Interrupts::None {
-        expected_fault = int;
-    }
-}
-
-fn get_expected_fault() -> Interrupts {
-    unsafe { expected_fault }
-}
-
-pub extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut InterruptStackFrame) {
-    match get_expected_fault() {
-        Interrupts::Breakpoint => qemu::exit_qemu(qemu::QemuExitCode::Success),
-        _ => panic!(
-            "BREAKPOINT exception thrown\n\n{}",
-            exception_default!(stack_frame)
-        ),
-    }
-}
-
-pub extern "x86-interrupt" fn general_protection_fault_handler(
-    stack_frame: &mut InterruptStackFrame,
-    error_code: u64,
-) {
-    match get_expected_fault() {
-        Interrupts::GeneralProtectionFault => qemu::exit_qemu(qemu::QemuExitCode::Success),
-        _ => panic!(
-            "GENERAL PROTECTION exception thrown\nerror code: {:x}\n{}",
-            error_code,
-            exception_default!(stack_frame)
-        ),
-    }
-}
-
-pub extern "x86-interrupt" fn page_fault_handler(
-    stack_frame: &mut InterruptStackFrame,
-    error_code: PageFaultErrorCode,
-) {
-    use x86_64::registers::control::Cr2;
-
-    match get_expected_fault() {
-        Interrupts::PageFault => qemu::exit_qemu(qemu::QemuExitCode::Success),
-        _ => panic!(
-            "PAGE FAULT while accessing address: 0x{:08x}\nerror code: {:?}(0x{:x})\n{}",
-            Cr2::read().as_u64(),
-            error_code,
-            error_code.bits(),
-            exception_default!(stack_frame)
-        ),
-    }
-}
-
-pub extern "x86-interrupt" fn segment_not_present_handler(
-    stack_frame: &mut InterruptStackFrame,
-    error_code: u64,
-) {
-    match get_expected_fault() {
-        Interrupts::NotPresent => qemu::exit_qemu(qemu::QemuExitCode::Success),
-        _ => panic!(
-            "SEGMENT NOT PRESENT exception\nerror code: 0x{:x}\n{}",
-            error_code,
-            exception_default!(stack_frame)
-        ),
-    }
-}
-
-pub extern "x86-interrupt" fn double_fault_handler(
-    stack_frame: &mut InterruptStackFrame,
-    _error_code: u64, // code is always zero
-) {
-    match get_expected_fault() {
-        Interrupts::DoubleFault => qemu::exit_qemu(qemu::QemuExitCode::Success),
-        _ => panic!(
-            "DOUBLE FAULT\nthis is a fatal exception\n{}",
-            exception_default!(stack_frame)
-        ),
-    }
-}
-- 
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