mirror of
https://github.com/fluencelabs/wasm-utils
synced 2025-03-27 08:21:05 +00:00
9527b969a4
* Initial implementation * Add wasm-stack-height binary * Fixes and tracing. * Doc fixes. * Fix type resolving for thunks. * Fix thunk numbering. * Don't generate thunks for fns with stack_cost = 0 * Diff tests. * Add table tests. * Add global test. * Make tests deterministic. * Refactoring. * Clean and refactor. * Rename Context → Stack in stach_height. * Don't generate call wrappers if stack_cost = 0 * Errors instead of panics. * Add with_stack_limit function. * Fix thunk generation. * Pass the stack height limit as separate value. * Use .unwrap_or_default() in diff.rs. * Remove redundant &. * Remove simple_test. * Remove variants of the Error. * `resolve_func_type` returns an Error. * Don't unwrap for .last() * Remove stack_limit from rules::Set * Rename max_height::compute.
94 lines
2.6 KiB
Rust
94 lines
2.6 KiB
Rust
extern crate diff;
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extern crate wasm_utils;
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extern crate wabt;
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extern crate parity_wasm;
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use std::fs;
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use std::io::{self, Read, Write};
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use std::path::{Path, PathBuf};
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use parity_wasm::elements;
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fn slurp<P: AsRef<Path>>(path: P) -> io::Result<Vec<u8>> {
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let mut f = fs::File::open(path)?;
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let mut buf = vec![];
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f.read_to_end(&mut buf)?;
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Ok(buf)
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}
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fn dump<P: AsRef<Path>>(path: P, buf: &[u8]) -> io::Result<()> {
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let mut f = fs::File::create(path)?;
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f.write_all(buf)?;
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Ok(())
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}
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fn validate_wasm(binary: &[u8]) -> Result<(), wabt::Error> {
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wabt::Module::read_binary(
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&binary,
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&Default::default()
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)?.validate()?;
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Ok(())
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}
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fn run_diff_test<F: FnOnce(&[u8]) -> Vec<u8>>(test_dir: &str, name: &str, test: F) {
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let mut fixture_path = PathBuf::from(concat!(
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env!("CARGO_MANIFEST_DIR"),
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"/tests/fixtures/",
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));
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fixture_path.push(test_dir);
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fixture_path.push(name);
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let mut expected_path = PathBuf::from(concat!(
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env!("CARGO_MANIFEST_DIR"),
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"/tests/expectations/"
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));
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expected_path.push(test_dir);
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expected_path.push(name);
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let fixture_wat = slurp(&fixture_path).expect("Failed to read fixture");
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let fixture_wasm = wabt::wat2wasm(fixture_wat).expect("Failed to read fixture");
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validate_wasm(&fixture_wasm).expect("Fixture is invalid");
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let expected_wat = slurp(&expected_path).unwrap_or_default();
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let expected_wat = String::from_utf8_lossy(&expected_wat);
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let actual_wasm = test(fixture_wasm.as_ref());
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validate_wasm(&actual_wasm).expect("Result module is invalid");
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let actual_wat = wabt::wasm2wat(&actual_wasm).expect("Failed to convert result wasm to wat");
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if actual_wat != expected_wat {
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println!("difference!");
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println!("--- {}", expected_path.display());
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println!("+++ {} test {}", test_dir, name);
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for diff in diff::lines(&expected_wat, &actual_wat) {
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match diff {
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diff::Result::Left(l) => println!("-{}", l),
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diff::Result::Both(l, _) => println!(" {}", l),
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diff::Result::Right(r) => println!("+{}", r),
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}
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}
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dump(&expected_path, actual_wat.as_bytes()).expect("Failed to write to expected");
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panic!();
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}
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}
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macro_rules! def_stack_height_test {
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( $name:ident ) => {
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#[test]
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fn $name() {
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run_diff_test("stack-height", concat!(stringify!($name), ".wat"), |input| {
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let module = elements::deserialize_buffer(input).expect("Failed to deserialize");
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let instrumented = wasm_utils::stack_height::inject_limiter(module, 1024).expect("Failed to instrument with stack counter");
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elements::serialize(instrumented).expect("Failed to serialize")
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});
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}
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};
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}
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def_stack_height_test!(simple);
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def_stack_height_test!(table);
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def_stack_height_test!(global);
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def_stack_height_test!(imports);
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