From: Duje Mihanović <duje.mihanovic@skole.hr>
Date: Tue, 28 Jun 2022 11:14:03 +0000 (+0200)
Subject: Small changes to double fault handler
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/%7B%7B%20.Permalink%20%7D%7D?a=commitdiff_plain;h=3546cb3bd60be95dfa9512614eb49af3a6b21d03;p=nameless-os.git

Small changes to double fault handler

Uses the panic facility committed a bit before ELF and groups the registers by
general purpose, stack, index and EIP/EFLAGS.
---

diff --git a/kernel/kernel.c b/kernel/kernel.c
index 8520906..adfdd3f 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -5,6 +5,7 @@
 #include <irq/i8259a.h>
 #include <stdint.h>
 #include <mm/paging.h>
+#include <panic.h>
 
 struct idt_descriptor idt[256] __attribute__((aligned(0x10)));
 struct idtr idtr __attribute__((aligned(0x10)));
@@ -37,43 +38,38 @@ void print_e820(struct e820_map *mmap, int mmap_size)
 /* Small handler for double faults. Will be put elsewhere eventually. */
 int double_fault_handler(struct interrupt_frame *frame)
 {
-	kprint("PANIC: Double fault occurred!\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EAX: ", VGA_COLOR_BRIGHT_RED);
+	kprint("Double fault occurred!\n", VGA_COLOR_BRIGHT_RED);
+	kprint("EAX: ", 0);
 	kprintd(frame->eax);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EBX: ", VGA_COLOR_BRIGHT_RED);
+	kprintc(' ', 0);
+	kprint("EBX: ", 0);
 	kprintd(frame->ebx);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("ECX: ", VGA_COLOR_BRIGHT_RED);
+	kprintc(' ', 0);
+	kprint("ECX: ", 0);
 	kprintd(frame->ecx);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EDX: ", VGA_COLOR_BRIGHT_RED);
+	kprintc(' ', 0);
+	kprint("EDX: ", 0);
 	kprintd(frame->edx);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EBP: ", VGA_COLOR_BRIGHT_RED);
+	kprintc('\n', 0);
+	kprint("EBP: ", 0);
 	kprintd(frame->ebp);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("ESP: ", VGA_COLOR_BRIGHT_RED);
+	kprintc(' ', 0);
+	kprint("ESP: ", 0);
 	kprintd(frame->esp);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("ESI: ", VGA_COLOR_BRIGHT_RED);
+	kprintc('\n', 0);
+	kprint("ESI: ", 0);
 	kprintd(frame->esi);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EDI: ", VGA_COLOR_BRIGHT_RED);
+	kprintc(' ', 0);
+	kprint("EDI: ", 0);
 	kprintd(frame->edi);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EIP: ", VGA_COLOR_BRIGHT_RED);
+	kprintc('\n', 0);
+	kprint("EIP: ", 0);
 	kprintd(frame->eip);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-	kprint("EFLAGS: ", VGA_COLOR_BRIGHT_RED);
+	kprintc(' ', 0);
+	kprint("EFLAGS: ", 0);
 	kprintd(frame->eflags);
-	kprint("\n", VGA_COLOR_BRIGHT_RED);
-
-	/* IF has already been cleared for us */
-	asm("cli");
-halt:
-	asm("hlt");
-	goto halt;
+	kprintc('\n', 0);
+	PANIC("double fault");
 }
 
 void kmain(struct e820_map *mmap, int mmap_size)