Added kernel panic function and stack smash protection.

These are untested features.

Makefile

@@ -46,7 +46,7 @@ LIBDIR :=
 INC := -I include/ -I include/libc/
 
 #Combined flags (Both C and C++)
-FLAGS := -O2 -Wall -Wextra -g -D__is_kernel -ffreestanding
+FLAGS := -O2 -Wall -Wextra -g -D__is_kernel -ffreestanding -fstack-protector
 #Specific flags
 CFLAGS := $(FLAGS) -std=gnu99 
 CXXFLAGS := $(FLAGS) -std=c++17

src/kernel/panic.c

@@ -0,0 +1,13 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+__attribute__((__noreturn__))
+void panic(char* str) {
+
+	printf("Entered kernel panic zone./n");
+	printf("%s", str);
+
+	while (1) { }
+	__builtin_unreachable();
+
+}

src/kernel/stackProtection.c

@@ -0,0 +1,23 @@
+#include <stdint.h>
+#include <stdlib.h>
+ 
+#if UINT32_MAX == UINTPTR_MAX
+#define STACK_CHK_GUARD 0xe2dee396
+#else
+#define STACK_CHK_GUARD 0x595e9fbd94fda766
+#endif
+ 
+uintptr_t __stack_chk_guard = STACK_CHK_GUARD;
+ 
+__attribute__((noreturn))
+void __stack_chk_fail(void)
+{
+#if __is_libc
+	abort();
+#elif __is_libk
+	panic("Stack smashing detected");
+#endif
+	
+	while (1) { }
+	__builtin_unreachable();
+}