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https://github.com/RGBCube/serenity
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LibWasm+Meta: Implement instantiation/execution primitives in test-wasm
This also optionally generates a test suite from the WebAssembly testsuite, which can be enabled via passing `INCLUDE_WASM_SPEC_TESTS` to cmake, which will generate test-wasm-compatible tests and the required fixtures. The generated directories are excluded from git since there's no point in committing them.
This commit is contained in:
Ali Mohammad Pur
Linus Groh
parent
541091500c
commit
24b2a6c93a
5 changed files with 396 additions and 7 deletions
232
Meta/generate-libwasm-spec-test.py
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232
Meta/generate-libwasm-spec-test.py
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@ -0,0 +1,232 @@
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#!/usr/bin/env python3
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from sys import argv, stderr
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from os import path
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from string import whitespace
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import re
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import math
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from tempfile import NamedTemporaryFile
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from subprocess import call
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import json
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atom_end = set('()"' + whitespace)
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def parse(sexp):
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sexp = re.sub(r'(?m)\(;.*;\)', '', re.sub(r'(;;.*)', '', sexp))
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stack, i, length = [[]], 0, len(sexp)
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while i < length:
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c = sexp[i]
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kind = type(stack[-1])
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if kind == list:
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if c == '(':
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stack.append([])
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elif c == ')':
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stack[-2].append(stack.pop())
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elif c == '"':
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stack.append('')
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elif c in whitespace:
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pass
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else:
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stack.append((c,))
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elif kind == str:
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if c == '"':
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stack[-2].append(stack.pop())
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elif c == '\\':
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i += 1
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stack[-1] += sexp[i]
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else:
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stack[-1] += c
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elif kind == tuple:
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if c in atom_end:
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atom = stack.pop()
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stack[-1].append(atom)
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continue
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else:
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stack[-1] = ((stack[-1][0] + c),)
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i += 1
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return stack.pop()
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def parse_typed_value(ast):
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types = {
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'i32.const': 'i32',
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'i64.const': 'i64',
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'f32.const': 'float',
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'f64.const': 'double',
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}
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if len(ast) == 2 and ast[0][0] in types:
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return {"type": types[ast[0][0]], "value": ast[1][0]}
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return {"type": "error"}
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def generate_module_source_for_compilation(entries):
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s = '('
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for entry in entries:
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if type(entry) == tuple and len(entry) == 1 and type(entry[0]) == str:
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s += entry[0] + ' '
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elif type(entry) == str:
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s += json.dumps(entry) + ' '
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elif type(entry) == list:
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s += generate_module_source_for_compilation(entry)
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else:
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raise Exception("wat? I dunno how to pretty print " + str(type(entry)))
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while s.endswith(' '):
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s = s[:len(s) - 1]
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return s + ')'
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def generate(ast):
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if type(ast) != list:
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return []
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tests = []
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for entry in ast:
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if len(entry) > 0 and entry[0] == ('module',):
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tests.append({
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"module": generate_module_source_for_compilation(entry),
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"tests": []
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})
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elif len(entry) in [2, 3] and entry[0][0].startswith('assert_'):
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if entry[1][0] == ('invoke',):
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tests[-1]["tests"].append({
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"kind": entry[0][0][len('assert_'):],
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"function": {
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"name": entry[1][1],
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"args": list(parse_typed_value(x) for x in entry[1][2:])
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},
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"result": parse_typed_value(entry[2]) if len(entry) == 3 else None
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})
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else:
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print("Ignoring unknown assertion argument", entry[1][0], file=stderr)
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elif len(entry) >= 2 and entry[0][0] == 'invoke':
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# toplevel invoke :shrug:
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tests[-1]["tests"].append({
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"kind": "ignore",
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"function": {
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"name": entry[1][1],
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"args": list(parse_typed_value(x) for x in entry[1][2:])
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},
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"result": parse_typed_value(entry[2]) if len(entry) == 3 else None
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})
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else:
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print("Ignoring unknown entry", entry, file=stderr)
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return tests
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def genarg(spec):
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if spec['type'] == 'error':
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return '0'
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def gen():
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x = spec['value']
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if x == 'nan':
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return 'NaN'
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if x == '-nan':
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return '-NaN'
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try:
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x = float.fromhex(x)
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if math.isnan(x):
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# FIXME: This is going to mess up the different kinds of nan
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return '-NaN' if math.copysign(1.0, x) < 0 else 'NaN'
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if math.isinf(x):
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return 'Infinity' if x > 0 else '-Infinity'
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return str(x)
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except ValueError:
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try:
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x = int(x, 0)
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return str(x)
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except ValueError:
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return x
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x = gen()
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if x.startswith('nan'):
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return 'NaN'
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if x.startswith('-nan'):
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return '-NaN'
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return x
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all_names_in_main = {}
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def genresult(ident, entry):
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if entry['kind'] == 'return':
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return_check = f'expect({ident}_result).toBe({genarg(entry["result"])})' if entry["result"] is not None else ''
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return (
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f'let {ident}_result ='
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f' module.invoke({ident}, {", ".join(genarg(x) for x in entry["function"]["args"])});\n '
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f'{return_check};\n '
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)
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if entry['kind'] == 'trap':
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return (
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f'expect(() => module.invoke({ident}, {", ".join(genarg(x) for x in entry["function"]["args"])}))'
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'.toThrow(TypeError, "Execution trapped");\n '
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)
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if entry['kind'] == 'ignore':
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return f'module.invoke({ident}, {", ".join(genarg(x) for x in entry["function"]["args"])});\n '
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return f'throw Exception("(Test Generator) Unknown test kind {entry["kind"]}");\n '
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def gentest(entry, main_name):
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name = entry["function"]["name"]
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if type(name) != str:
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print("Unsupported test case (call to", name, ")", file=stderr)
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return '\n '
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ident = '_' + re.sub("[^a-zA-Z_0-9]", "_", name)
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count = all_names_in_main.get(name, 0)
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all_names_in_main[name] = count + 1
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test_name = f'execution of {main_name}: {name} (instance {count})'
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source = (
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f'test({json.dumps(test_name)}, () => {{\n'
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f'let {ident} = module.getExport({json.dumps(name)});\n '
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f'expect({ident}).not.toBeUndefined();\n '
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f'{genresult(ident, entry)}'
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'});\n\n '
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)
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return source
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def gen_parse_module(name):
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return (
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f'let content;\n '
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f'try {{\n '
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f'content = readBinaryWasmFile("Fixtures/SpecTests/{name}.wasm");\n '
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f'}} catch {{ read_okay = false; }}\n '
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f'const module = parseWebAssemblyModule(content)\n '
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)
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def main():
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with open(argv[1]) as f:
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sexp = f.read()
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name = argv[2]
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module_output_path = argv[3]
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ast = parse(sexp)
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for index, description in enumerate(generate(ast)):
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testname = f'{name}_{index}'
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outpath = path.join(module_output_path, f'{testname}.wasm')
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with NamedTemporaryFile("w+") as temp:
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temp.write(description["module"])
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temp.flush()
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rc = call(["wasm-as", "-n", temp.name, "-o", outpath])
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if rc != 0:
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print("Failed to compile", name, "module index", index, "skipping that test", file=stderr)
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continue
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sep = ""
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print(f'''{{
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let readOkay = true;
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{gen_parse_module(testname)}
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if (readOkay) {{
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{sep.join(gentest(x, testname) for x in description["tests"])}
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}}}}
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''')
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if __name__ == "__main__":
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main()
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