kernel: x86_64: rename x86

Rename the x86 arch-specific directory to x86_64, reflecting clang's
architecture selector flags.

Signed-off-by: Danny Holman <dholman@gymli.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/kernel/core/stack_protector.c b/kernel/core/stack_protector.c
new file mode 100644
index 0000000..cb15a15
--- /dev/null
+++ b/kernel/core/stack_protector.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+ *
+ * This file is part of BoxOS, a free and open-source Unix-like operating
+ * system.
+ *
+ * BoxOS is free software; you can redistribute it and/or modify under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * BoxOS; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/panic.h>
+#include <stdint.h>
+
+uintptr_t __stack_chk_guard;
+
+__attribute__((noreturn)) void __stack_chk_fail(void) {
+        panic("Detected attempted stack manipulation in kernel");
+        while(1);
+}