src/op/check/misc.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

/*
 * 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/io.h>
#include <nw/ops.h>

static enum nw_state run(struct nw_mod *const m)
{
    unsigned char op;
    const struct nw_io_cfg *const cfg = &m->cfg.io;
    struct nw_sm_io io = {0};
    enum nw_state n;

    io.buf = &op;
    io.n = sizeof op;

    if ((n = nwp_io_read(cfg, &io, cfg->user)))
        return n;

    m->next = m->sm.code.next;
    return NW_AGAIN;
}

void nwp_op_check_misc(struct nw_mod *const m)
{
    m->next = run;
}