From 8a9208612eec8ddae4c418485d848ecfa0613699 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Mon, 30 Oct 2023 22:12:14 +0100
Subject: Meta: Move kernel and userland to their own folders.
This is to allow both the kernel and the userland to share certain
header files and to make the folder structure a bit more clear.
---
kernel/kubsan.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 kernel/kubsan.c
(limited to 'kernel/kubsan.c')
diff --git a/kernel/kubsan.c b/kernel/kubsan.c
new file mode 100644
index 0000000..c81b3fc
--- /dev/null
+++ b/kernel/kubsan.c
@@ -0,0 +1,58 @@
+#include <kubsan.h>
+#include <log.h>
+#include <stdio.h>
+
+void ubsan_log(const char *cause, struct source_location source) {
+ kprintf("%s: %s : %d\n", cause, source.file_name, source.line);
+ dump_backtrace(5);
+ asm("cli");
+ asm volatile("1: jmp 1b");
+ asm("hlt");
+ for (;;)
+ ;
+}
+
+void __ubsan_handle_shift_out_of_bounds(struct ShiftOutOfBoundsData *data,
+ unsigned long lhs, unsigned long rhs) {
+ (void)lhs;
+ (void)rhs;
+ ubsan_log("handle_shift_out_of_bounds", data->location);
+}
+
+void __ubsan_handle_add_overflow(struct OverflowData *data, unsigned long lhs,
+ unsigned long rhs) {
+ (void)lhs;
+ (void)rhs;
+ ubsan_log("handle_add_overflow", data->location);
+}
+
+void __ubsan_handle_sub_overflow(struct OverflowData *data, unsigned long lhs,
+ unsigned long rhs) {
+ (void)lhs;
+ (void)rhs;
+ ubsan_log("handle_sub_overflow", data->location);
+}
+
+void __ubsan_handle_mul_overflow(struct OverflowData *data, unsigned long lhs,
+ unsigned long rhs) {
+ (void)lhs;
+ (void)rhs;
+ ubsan_log("handle_mul_overflow", data->location);
+}
+
+void __ubsan_handle_out_of_bounds(struct OutOfBoundsData *data, void *index) {
+ (void)index;
+ ubsan_log("handle_out_of_bounds", data->location);
+}
+
+void __ubsan_handle_pointer_overflow(struct OutOfBoundsData *data,
+ void *index) {
+ (void)index;
+ ubsan_log("handle_pointer_overflow", data->location);
+}
+
+void __ubsan_handle_vla_bound_not_positive(struct OutOfBoundsData *data,
+ void *index) {
+ (void)index;
+ ubsan_log("handle_vla_bound_not_positive", data->location);
+}
--
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