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Update support for the module linking proposal

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This commit updates the various tooling used by wasmtime which has new
updates to the module linking proposal. This is done primarily to sync
with WebAssembly/module-linking#26. The main change implemented here is
that wasmtime now supports creating instances from a set of values, nott
just from instantiating a module. Additionally subtyping handling of
modules with respect to imports is now properly handled by desugaring
two-level imports to imports of instances.

A number of small refactorings are included here as well, but most of
them are in accordance with the changes to `wasmparser` and the updated
binary format for module linking.
This commit is contained in:
Alex Crichton
2021-01-12 10:44:11 -08:00
parent 705af0ac41
commit 703762c49e
45 changed files with 1041 additions and 747 deletions
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32
cranelift/wasm/src/module_translator.rs
View File

@@ -4,8 +4,8 @@ use crate::environ::{ModuleEnvironment, WasmResult};
use crate::sections_translator::{
parse_alias_section, parse_data_section, parse_element_section, parse_event_section,
parse_export_section, parse_function_section, parse_global_section, parse_import_section,
parse_instance_section, parse_memory_section, parse_module_section, parse_name_section,
parse_start_section, parse_table_section, parse_type_section,
parse_instance_section, parse_memory_section, parse_name_section, parse_start_section,
parse_table_section, parse_type_section,
};
use crate::state::ModuleTranslationState;
use cranelift_codegen::timing;
@@ -22,23 +22,16 @@ pub fn translate_module<'data>(
let mut module_translation_state = ModuleTranslationState::new();
let mut validator = Validator::new();
validator.wasm_features(environ.wasm_features());
let mut stack = Vec::new();
let mut modules = 1;
let mut cur_module = 0;
for payload in Parser::new(0).parse_all(data) {
match payload? {
Payload::Version { num, range } => {
validator.version(num, &range)?;
environ.module_start(cur_module);
environ.module_start();
}
Payload::End => {
validator.end()?;
environ.module_end(cur_module);
if let Some((other, other_index)) = stack.pop() {
validator = other;
cur_module = other_index;
}
environ.module_end();
}
Payload::TypeSection(types) => {
@@ -111,10 +104,6 @@ pub fn translate_module<'data>(
environ.reserve_passive_data(count)?;
}
Payload::ModuleSection(s) => {
validator.module_section(&s)?;
parse_module_section(s, environ)?;
}
Payload::InstanceSection(s) => {
validator.instance_section(&s)?;
parse_instance_section(s, environ)?;
@@ -123,20 +112,17 @@ pub fn translate_module<'data>(
validator.alias_section(&s)?;
parse_alias_section(s, environ)?;
}
Payload::ModuleCodeSectionStart {
Payload::ModuleSectionStart {
count,
range,
size: _,
} => {
validator.module_code_section_start(count, &range)?;
validator.module_section_start(count, &range)?;
environ.reserve_modules(count);
}
Payload::ModuleCodeSectionEntry { .. } => {
let subvalidator = validator.module_code_section_entry();
stack.push((validator, cur_module));
validator = subvalidator;
cur_module = modules;
modules += 1;
Payload::ModuleSectionEntry { .. } => {
validator.module_section_entry();
}
Payload::CustomSection {