1 files changed, 23 insertions, 0 deletions
diff --git a/src/interp/linear/check.c b/src/interp/linear/check.c
new file mode 100644
index 0000000..f2bea9a
--- /dev/null
+++ b/src/interp/linear/check.c
@@ -0,0 +1,23 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2025  Xavier Del Campo Romero
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include <nanowasm/nw.h>
+#include <nanowasm/linear.h>
+#include <nw/interp.h>
+#include <nw/mem.h>
+#include <nw/log.h>
+
+int nwp_linear_check(const struct nw_interp *const i,
+    const unsigned long offset, const size_t n)
+{
+    const unsigned long pagesize = 64lu << 10lu,
+        end = i->linear.n_pages * pagesize;
+
+    return offset >= end || n > end || offset >= end - n;
+}