libk: create a subset libc for kernel use

Create a subset of the C library for use inside the kernel.

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

1 files changed, 11 insertions, 0 deletions

diff --git a/libk/stack_protector.c b/libk/stack_protector.c
new file mode 100644
index 0000000..78d0302
--- /dev/null
+++ b/libk/stack_protector.c
@@ -0,0 +1,11 @@
+#include <kernel/panic.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#define STACK_CHK_GUARD 0x32E3429E
+
+uintptr_t __stack_chk_guard = STACK_CHK_GUARD;
+
+__attribute__((noreturn)) void __stack_chk_fail(void) {
+        panic("STACK SMASHING IN KERNEL ADDRESS SPACE");
+}