1 files changed, 38 insertions, 0 deletions
diff --git a/src/op/unreachable.c b/src/op/unreachable.c
new file mode 100644
index 0000000..6ecd374
--- /dev/null
+++ b/src/op/unreachable.c
@@ -0,0 +1,38 @@
+/*
+ * 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 <nw/interp.h>
+#include <nw/log.h>
+#include <nw/ops.h>
+
+static enum nw_state tell(struct nw_interp *const i)
+{
+    struct nw_i_sm_unreachable *const u = &i->sm.unreachable;
+    const struct nw_io_cfg *const cfg = &i->cfg.io;
+    static const char *const exc = "unreachable";
+    const enum nw_state n = cfg->tell(&u->offset, cfg->user);
+
+    if (n)
+        return n;
+
+    i->exception = exc;
+#ifdef NW_LOG
+    nwp_log("%s, offset: %ld\n", exc, u->offset);
+#endif
+    return NW_FATAL;
+}
+
+void nwp_op_unreachable(struct nw_interp *const i)
+{
+    static const struct nw_i_sm_unreachable u = {0};
+
+    i->sm.unreachable = u;
+    i->next = tell;
+}