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Integrate Lightbeam with latest Wasmtime master (#1232)

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* Implement trap info in Lightbeam

* Start using wasm-reader instead of wasmparser for parsing operators

* Update to use wasm-reader, some reductions in allocation, support source location tracking for traps, start to support multi-value

The only thing that still needs to be supported for multi-value is stack returns, but we need to make it compatible with Cranelift.

* Error when running out of registers (although we'd hope it should be impossible) instead of panicking

* WIP: Update Lightbeam to work with latest Wasmtime

* WIP: Update Lightbeam to use current wasmtime

* WIP: Migrate to new system for builtin functions

* WIP: Update Lightbeam to work with latest Wasmtime

* Remove multi_mut

* Format

* Fix some bugs around arguments, add debuginfo offset tracking

* Complete integration with new Wasmtime

* Remove commented code

* Fix formatting

* Fix warnings, remove unused dependencies

* Fix `iter` if there are too many elements, fix compilation for latest wasmtime

* Fix float arguments on stack

* Remove wasm-reader and trap info work

* Allocate stack space _before_ passing arguments, fail if we can't zero a xmm reg

* Fix stack argument offset calculation

* Fix stack arguments in Lightbeam

* Re-add WASI because it somehow got removed during rebase

* Workaround for apparent `type_alias_impl_trait`-related bug in rustdoc

* Fix breakages caused by rebase, remove module offset info as it is unrelated to wasmtime integration PR and was broken by rebase

* Add TODO comment explaining `lightbeam::ModuleContext` trait
This commit is contained in:
Jef
2020-04-30 01:26:40 +02:00
committed by GitHub
parent aa78811fb2
commit 957677c6f5
13 changed files with 2435 additions and 2112 deletions
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22
crates/lightbeam/src/translate_sections.rs
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@@ -1,6 +1,5 @@
use crate::backend::{CodeGenSession, TranslatedCodeSection};
use crate::backend::TranslatedCodeSection;
use crate::error::Error;
use crate::function_body;
use crate::module::SimpleContext;
use cranelift_codegen::{binemit, ir};
use wasmparser::{
@@ -106,20 +105,13 @@ impl binemit::RelocSink for UnimplementedRelocSink {
/// Parses the Code section of the wasm module.
pub fn code(
code: CodeSectionReader,
translation_ctx: &SimpleContext,
_code: CodeSectionReader,
_translation_ctx: &SimpleContext,
) -> Result<TranslatedCodeSection, Error> {
let func_count = code.get_count();
let mut session = CodeGenSession::new(func_count, translation_ctx);
for (idx, body) in code.into_iter().enumerate() {
let body = body?;
let mut relocs = UnimplementedRelocSink;
function_body::translate_wasm(&mut session, &mut relocs, idx as u32, &body)?;
}
Ok(session.into_translated_code_section()?)
// TODO: Remove the Lightbeam harness entirely, this is just to make this compile.
// We do all our testing through Wasmtime now, there's no reason to duplicate
// writing a WebAssembly environment in Lightbeam too.
unimplemented!("Incomplete migration to wasm-reader");
}
/// Parses the Data section of the wasm module.