First commit1st

1 files changed, 36 insertions, 0 deletions

diff --git a/src/routines/section/exit.c b/src/routines/section/exit.c
new file mode 100644
index 0000000..db380ef
--- /dev/null
+++ b/src/routines/section/exit.c
@@ -0,0 +1,36 @@
+/*
+ * 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/routines.h>
+
+enum nw_state nwp_section_exit(struct nw_mod *const m)
+{
+    long offset;
+    const struct nw_io_cfg *const cfg = &m->cfg.io;
+    const enum nw_state n = cfg->tell(&offset, cfg->user);
+
+    if (n)
+        return n;
+
+    const struct nw_mod_section *const s = &m->section;
+    const unsigned long size = offset - s->offset;
+
+    if (size != s->len)
+    {
+        LOG("%s: size exceeded (%lu expected, got %lu)\n",
+            __func__, (unsigned long)s->len, size);
+        return NW_FATAL;
+    }
+
+    nwp_section(m);
+    return NW_AGAIN;
+}