From 144b7fe1415ff97497fa4ea3b95e8dd6b95d069e Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi.dcr@tutanota.com>
Date: Sat, 7 Sep 2024 00:04:38 +0200
Subject: First commit

---
 src/op/check/end.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 src/op/check/end.c

(limited to 'src/op/check/end.c')

diff --git a/src/op/check/end.c b/src/op/check/end.c
new file mode 100644
index 0000000..7c614bb
--- /dev/null
+++ b/src/op/check/end.c
@@ -0,0 +1,35 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2024  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/io.h>
+#include <nw/log.h>
+#include <nw/ops.h>
+
+static enum nw_state run(struct nw_mod *const m)
+{
+    struct nw_sm_c *const c = &m->sm.code;
+    struct nw_sm_c_fn *const fn = &c->fn;
+
+    if (!fn->blocks)
+    {
+        LOG("%s: unexpected end in function %lu\n", __func__,
+            (unsigned long)c->entry_i);
+        return NW_FATAL;
+    }
+
+    fn->blocks--;
+    m->next = c->next;
+    return NW_AGAIN;
+}
+
+void nwp_op_check_end(struct nw_mod *const m)
+{
+    m->next = run;
+}
-- 
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