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use cranelift_codegen::isa;
use cranelift_codegen::print_errors::pretty_verifier_error;
use cranelift_codegen::settings::{self, Flags};
use cranelift_codegen::verifier;
use cranelift_wasm::{translate_module, DummyEnvironment, FuncIndex, ReturnMode};
use std::fs;
use std::path::Path;
use std::str::FromStr;
use target_lexicon::triple;
#[test]
fn testsuite() {
let mut paths: Vec<_> = fs::read_dir("./wasmtests")
.unwrap()
.map(|r| r.unwrap())
.filter(|p| {
// Ignore files starting with `.`, which could be editor temporary files
if let Some(stem) = p.path().file_stem() {
if let Some(stemstr) = stem.to_str() {
return !stemstr.starts_with('.');
}
}
false
})
.collect();
paths.sort_by_key(|dir| dir.path());
let flags = Flags::new(settings::builder());
for path in paths {
let path = path.path();
println!("=== {} ===", path.display());
let data = read_module(&path);
handle_module(data, &flags, ReturnMode::NormalReturns);
}
}
#[test]
fn use_fallthrough_return() {
let flags = Flags::new(settings::builder());
let path = Path::new("./wasmtests/use_fallthrough_return.wat");
let data = read_module(&path);
handle_module(data, &flags, ReturnMode::FallthroughReturn);
}
#[test]
fn use_name_section() {
let data = wat::parse_str(
r#"
(module $module_name
(func $func_name (local $loc_name i32)
)
)"#,
)
.unwrap();
let flags = Flags::new(settings::builder());
let triple = triple!("riscv64");
let isa = isa::lookup(triple).unwrap().finish(flags.clone());
let return_mode = ReturnMode::NormalReturns;
let mut dummy_environ = DummyEnvironment::new(isa.frontend_config(), return_mode, false);
translate_module(data.as_ref(), &mut dummy_environ).unwrap();
assert_eq!(
dummy_environ.get_func_name(FuncIndex::from_u32(0)).unwrap(),
"func_name"
);
}
fn read_module(path: &Path) -> Vec<u8> {
match path.extension() {
None => {
panic!("the file extension is not wasm or wat");
}
Some(ext) => match ext.to_str() {
Some("wasm") => std::fs::read(path).expect("error reading wasm file"),
Some("wat") => wat::parse_file(path)
.map_err(|e| e.to_string())
.expect("failed to parse wat"),
None | Some(&_) => panic!("the file extension for {:?} is not wasm or wat", path),
},
}
}
fn handle_module(data: Vec<u8>, flags: &Flags, return_mode: ReturnMode) {
let triple = triple!("riscv64");
let isa = isa::lookup(triple).unwrap().finish(flags.clone());
let mut dummy_environ = DummyEnvironment::new(isa.frontend_config(), return_mode, false);
translate_module(&data, &mut dummy_environ).unwrap();
for func in dummy_environ.info.function_bodies.values() {
verifier::verify_function(func, &*isa)
.map_err(|errors| panic!("{}", pretty_verifier_error(func, Some(&*isa), None, errors)))
.unwrap();
}
}
#[test]
fn reachability_is_correct() {
let tests = vec![
(
ReturnMode::NormalReturns,
r#"
(module (func (param i32)
(loop
(block
local.get 0
br_if 0
br 1))))"#,
vec![
(true, true), // Loop
(true, true), // Block
(true, true), // LocalGet
(true, true), // BrIf
(true, false), // Br
(false, true), // End
(true, true), // End
(true, true), // End
],
),
(
ReturnMode::NormalReturns,
r#"
(module (func (param i32)
(loop
(block
br 1
nop))))"#,
vec![
(true, true), // Loop
(true, true), // Block
(true, false), // Br
(false, false), // Nop
(false, false), // Nop
(false, false), // Nop
(false, false), // End
],
),
(
ReturnMode::NormalReturns,
r#"
(module (func (param i32) (result i32)
i32.const 1
return
i32.const 42))"#,
vec![
(true, true), // I32Const
(true, false), // Return
(false, false), // I32Const
(false, false), // End
],
),
(
ReturnMode::FallthroughReturn,
r#"
(module (func (param i32) (result i32)
i32.const 1
return
i32.const 42))"#,
vec![
(true, true), // I32Const
(true, false), // Return
(false, false), // I32Const
(false, true), // End
],
),
];
for (return_mode, wat, expected_reachability) in tests {
println!("testing wat:\n{}", wat);
let flags = Flags::new(settings::builder());
let triple = triple!("riscv64");
let isa = isa::lookup(triple).unwrap().finish(flags.clone());
let mut env = DummyEnvironment::new(isa.frontend_config(), return_mode, false);
env.test_expected_reachability(expected_reachability);
let data = wat::parse_str(wat).unwrap();
translate_module(data.as_ref(), &mut env).unwrap();
}
}
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