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ladybird/Libraries/LibWasm/Constants.h

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LibWasm: Start implementing a basic WebAssembly binary format parser 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 :^)
2021-04-26 08:18:13 +00:00
/*
* 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;
LibWasm+LibWeb: Parse and validate all Wasm SIMD instructions
2023-06-12 09:34:22 +00:00
static constexpr auto v128_tag = 0x7b;
LibWasm: Start implementing a basic WebAssembly binary format parser 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 :^)
2021-04-26 08:18:13 +00:00
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;
LibWasm: Implement memory.grow, memory.size and drop These allow a very basic memory-using program to work.
2021-05-03 18:15:47 +00:00
static constexpr auto page_size = 64 * KiB;
LibWasm: Tweak the implementation-defined limits a bit
2021-07-06 09:37:52 +00:00
// Implementation-defined limits
// These are not concretely defined by the spec, so the values are only defined by us.
LibWasm: Use AK::StackInfo to track stack size This way, we can make sure that it doesn't overflow when ASAN is enabled.
2021-07-11 08:32:42 +00:00
static constexpr auto minimum_stack_space_to_keep_free = 256 * KiB; // Note: Value is arbitrary and chosen by testing with ASAN
LibWasm: Tweak the implementation-defined limits a bit
2021-07-06 09:37:52 +00:00
static constexpr auto max_allowed_executed_instructions_per_call = 256 * 1024 * 1024;
LibWasm: Allow vectors of up to 500M entries This usually shows up in custom sections, containing plain bytes.
2022-10-23 23:50:58 +00:00
static constexpr auto max_allowed_vector_size = 500 * MiB;
LibWasm: Increase the arbitrary local value count per type limit It was arbitrary, it's still arbitrary, but now it's funny too :^)
2022-03-19 18:59:27 +00:00
static constexpr auto max_allowed_function_locals_per_type = 42069; // Note: VERY arbitrary.
LibWasm: Limit the call stack depth and the number of executed insts These limits are described in the spec, and we're supposed to stop execution at some point. The limits are arbitrarily chosen.
2021-06-21 16:33:08 +00:00
LibWasm: Start implementing a basic WebAssembly binary format parser 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 :^)
2021-04-26 08:18:13 +00:00
}
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