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LibWasm: Start implementing a basic WebAssembly binary format parser

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This can currently parse a really simple module.
Note that it cannot parse the DataCount section, and it's still missing
almost all of the instructions.
This commit also adds a 'wasm' test utility that tries to parse a given
webassembly binary file.
It currently does nothing but exit when the parse fails, but it's a
start :^)
This commit is contained in:
Ali Mohammad Pur 2021-04-26 12:48:13 +04:30 • committed by Andreas Kling
parent 56a6d7924e
commit aa4d8d26b9
10 changed files with 1991 additions and 0 deletions
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37
Userland/Libraries/LibWasm/Constants.h Normal file
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/*
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
namespace Wasm::Constants {
// Value
static constexpr auto i32_tag = 0x7f;
static constexpr auto i64_tag = 0x7e;
static constexpr auto f32_tag = 0x7d;
static constexpr auto f64_tag = 0x7c;
static constexpr auto function_reference_tag = 0x70;
static constexpr auto extern_reference_tag = 0x6f;
// Function
static constexpr auto function_signature_tag = 0x60;
// Global
static constexpr auto const_tag = 0x00;
static constexpr auto var_tag = 0x01;
// Block
static constexpr auto empty_block_tag = 0x40;
// Import section
static constexpr auto extern_function_tag = 0x00;
static constexpr auto extern_table_tag = 0x01;
static constexpr auto extern_memory_tag = 0x02;
static constexpr auto extern_global_tag = 0x03;
}