| /* Copyright 2017 Mozilla Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #![cfg_attr(not(feature = "validate"), allow(dead_code))] |
| |
| // The following limits are imposed by wasmparser on WebAssembly modules. |
| // The limits are agreed upon with other engines for consistency. |
| pub const MAX_WASM_TYPES: usize = 1_000_000; |
| pub const MAX_WASM_SUPERTYPES: usize = 1; |
| pub const MAX_WASM_FUNCTIONS: usize = 1_000_000; |
| pub const MAX_WASM_IMPORTS: usize = 1_000_000; |
| pub const MAX_WASM_EXPORTS: usize = 1_000_000; |
| pub const MAX_WASM_GLOBALS: usize = 1_000_000; |
| pub const MAX_WASM_ELEMENT_SEGMENTS: usize = 100_000; |
| pub const MAX_WASM_DATA_SEGMENTS: usize = 100_000; |
| pub const MAX_WASM_STRING_SIZE: usize = 100_000; |
| pub const MAX_WASM_FUNCTION_SIZE: usize = 128 * 1024; |
| pub const MAX_WASM_FUNCTION_LOCALS: usize = 50000; |
| pub const MAX_WASM_FUNCTION_PARAMS: usize = 1000; |
| pub const MAX_WASM_FUNCTION_RETURNS: usize = 1000; |
| pub const _MAX_WASM_TABLE_SIZE: usize = 10_000_000; |
| pub const MAX_WASM_TABLE_ENTRIES: usize = 10_000_000; |
| pub const MAX_WASM_TABLES: usize = 100; |
| pub const MAX_WASM_MEMORIES: usize = 100; |
| pub const MAX_WASM_TAGS: usize = 1_000_000; |
| pub const MAX_WASM_BR_TABLE_SIZE: usize = MAX_WASM_FUNCTION_SIZE; |
| pub const MAX_WASM_STRUCT_FIELDS: usize = 10_000; |
| pub const MAX_WASM_CATCHES: usize = 10_000; |
| pub const MAX_WASM_SUBTYPING_DEPTH: usize = 63; |
| |
| pub const DEFAULT_WASM_PAGE_SIZE: u64 = 1 << 16; |
| |
| pub fn max_wasm_memory32_pages(page_size: u64) -> u64 { |
| assert!(page_size.is_power_of_two()); |
| assert!(page_size <= DEFAULT_WASM_PAGE_SIZE); |
| (1 << 32) / page_size |
| } |
| |
| pub fn max_wasm_memory64_pages(page_size: u64) -> u64 { |
| assert!(page_size.is_power_of_two()); |
| assert!(page_size <= DEFAULT_WASM_PAGE_SIZE); |
| u64::try_from((1_u128 << 64) / u128::from(page_size)).unwrap_or(u64::MAX) |
| } |
| |
| // Component-related limits |
| pub const MAX_WASM_MODULE_SIZE: usize = 1024 * 1024 * 1024; //= 1 GiB |
| pub const MAX_WASM_MODULE_TYPE_DECLS: usize = 100_000; |
| pub const MAX_WASM_COMPONENT_TYPE_DECLS: usize = 100_000; |
| pub const MAX_WASM_INSTANCE_TYPE_DECLS: usize = 100_000; |
| pub const MAX_WASM_RECORD_FIELDS: usize = 10_000; |
| pub const MAX_WASM_VARIANT_CASES: usize = 10_000; |
| pub const MAX_WASM_TUPLE_TYPES: usize = 10_000; |
| pub const MAX_WASM_FLAG_NAMES: usize = 1_000; |
| pub const MAX_WASM_ENUM_CASES: usize = 10_000; |
| pub const MAX_WASM_INSTANTIATION_EXPORTS: usize = 100_000; |
| pub const MAX_WASM_CANONICAL_OPTIONS: usize = 10; |
| pub const MAX_WASM_INSTANTIATION_ARGS: usize = 100_000; |
| pub const MAX_WASM_START_ARGS: usize = 1000; |
| pub const MAX_WASM_TYPE_SIZE: u32 = 1_000_000; |
| pub const MAX_WASM_MODULES: usize = 1_000; |
| pub const MAX_WASM_COMPONENTS: usize = 1_000; |
| pub const MAX_WASM_INSTANCES: usize = 1_000; |
| pub const MAX_WASM_VALUES: usize = 1_000; |
| |
| /// Core items in components such as globals/memories/tables don't actually |
| /// create new definitions but are instead just aliases to preexisting items. |
| /// This means they have a different limit than the core wasm based limits. |
| pub const MAX_CORE_INDEX_SPACE_ITEMS: usize = 1_000_000; |
