src/interp/linear/check.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/linear.h>
#include <nw/interp.h>
#include <nw/mem.h>
#include <nw/log.h>

int nwp_linear_check(const struct nw_interp *const i,
    const unsigned long offset, const size_t n)
{
    const unsigned long pagesize = 64lu << 10lu,
        end = i->linear.n_pages * pagesize;

    return offset >= end || n > end || offset >= end - n;
}