src/dbg/global.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 <nanowasm/dbg.h>
#include <nw/global.h>
#include <nw/log.h>
#include <nw/types.h>

static enum nw_state read_global(struct nw_interp *const i)
{
    struct nw_dbg *const d = i->args;
    struct nw_dbg_sm_global *const pg = &d->sm.global;
    struct nw_dbg_value *const v = &d->v;
    const struct nw_global *const gl = &pg->gl;
    const enum nw_state n = nwp_global_load(i, &pg->io, pg->index);

    if (n)
        return n;

    v->type = gl->type;
    v->value = gl->value;
    i->next = pg->inext;
    return NW_AGAIN;
}

void nw_dbg_global(struct nw_dbg *const d, const unsigned long index)
{
    const struct nw_dbg_sm_global gl = {0};
    struct nw_dbg_sm_global *const pg = &d->sm.global;
    struct nw_sm_io *const io = &pg->io;
    struct nw_interp *const i = &d->cfg.inst->interp;

    *pg = gl;
    pg->index = index;
    pg->inext = i->next;
    io->buf = &pg->gl;
    io->n = sizeof pg->gl;
    i->args = d;
    i->next = read_global;
}