First commit1st

1 files changed, 39 insertions, 0 deletions

diff --git a/src/op/i32_const.c b/src/op/i32_const.c
new file mode 100644
index 0000000..dbd0e91
--- /dev/null
+++ b/src/op/i32_const.c
@@ -0,0 +1,39 @@
+/*
+ * 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/interp.h>
+#include <nw/log.h>
+#include <nw/ops.h>
+
+static enum nw_state get_value(struct nw_interp *const i)
+{
+    nw_varuint32 value;
+    const struct nw_io_cfg *const cfg = &i->cfg.io;
+    struct nw_sm_leb128 *const l = &i->sm.i32_const.leb128;
+    const enum nw_state n = nwp_varuint32(cfg, l, &value);
+
+    if (n)
+        return n;
+    else if (nwp_interp_stack_push(i, &value, sizeof value))
+    {
+        LOG("%s: nwp_interp_stack_push failed\n", __func__);
+        return NW_FATAL;
+    }
+
+    nwp_interp_resume(i);
+    return NW_AGAIN;
+}
+
+void nwp_op_i32_const(struct nw_interp *const i)
+{
+    i->next = get_value;
+    i->sm.i32_const = (const struct nw_i_sm_i32_const){0};
+}