From 4e817cecfa7328af34fb96db7f052352737cd07e Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Wed, 16 Oct 2024 20:41:17 +0200
Subject: kernel: Add RSOD(red screen of death)

This is not useful since 99% of the time I will have access to the
serial output. But it does look cool.
---
 kernel/cpu/idt.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'kernel/cpu')

diff --git a/kernel/cpu/idt.c b/kernel/cpu/idt.c
index a7a93f6..474727f 100644
--- a/kernel/cpu/idt.c
+++ b/kernel/cpu/idt.c
@@ -1,6 +1,7 @@
 #include <cpu/arch_inst.h>
 #include <cpu/idt.h>
 #include <interrupts.h>
+#include <log.h>
 #include <sched/scheduler.h>
 #include <stdio.h>
 
@@ -50,6 +51,14 @@ __attribute__((no_caller_saved_registers)) void EOI(u8 irq) {
 }
 
 void general_protection_fault(reg_t *regs) {
+  int is_userspace = (regs->error_code & (1 << 2));
+  if (is_userspace) {
+    signal_process(current_task, SIGSEGV);
+    return;
+  }
+
+  log_enable_screen();
+
   klog(LOG_ERROR, "General Protetion Fault");
   kprintf(" Error Code: %x\n", regs->error_code);
   kprintf("Instruction Pointer: %x\n", regs->eip);
@@ -90,6 +99,8 @@ void page_fault(reg_t *regs) {
     return;
   }
 
+  log_enable_screen();
+
   klog(LOG_ERROR, "Page Fault");
   kprintf("CR2: %x\n", cr2);
   if (current_task) {
-- 
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