src/interp/global/store.c


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/*
 * 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/global.h>
#include <nw/interp.h>
#include <nw/mem.h>
#include <nw/log.h>

enum nw_state nwp_global_store(struct nw_interp *const i,
    struct nw_sm_io *const io, const nw_varuint32 index)
{
    const struct nw_interp_cfg *const cfg = &i->cfg;
    const size_t offset = index * sizeof (struct nw_global);
    const enum nw_state n = nwp_mem_store(&cfg->global, io, offset, cfg->user);

    if (n == NW_FATAL)
    {
        static const char *const exc = "failed to store into global memory";

#ifdef NW_LOG
        nwp_log("%s\n", exc);
#endif
        i->exception = exc;
    }

    return n;
}