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ladybird/Tests/LibWasm/test-wasm.cpp
Linus Groh 5dd5896588 LibJS+LibWeb: Replace GlobalObject with Realm in initialize() functions 
This is a continuation of the previous commit.

Calling initialize() is the first thing that's done after allocating a
cell on the JS heap - and in the common case of allocating an object,
that's where properties are assigned and intrinsics occasionally
accessed.
Since those are supposed to live on the realm eventually, this is
another step into that direction.
2022-08-23 13:58:30 +01:00

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/*
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/Stream.h>
#include <LibTest/JavaScriptTestRunner.h>
#include <LibWasm/AbstractMachine/BytecodeInterpreter.h>
#include <LibWasm/Types.h>
#include <string.h>
TEST_ROOT("Userland/Libraries/LibWasm/Tests");
TESTJS_GLOBAL_FUNCTION(read_binary_wasm_file, readBinaryWasmFile)
{
auto filename = TRY(vm.argument(0).to_string(global_object));
auto file = Core::Stream::File::open(filename, Core::Stream::OpenMode::Read);
if (file.is_error())
return vm.throw_completion<JS::TypeError>(global_object, strerror(file.error().code()));
auto file_size = file.value()->size();
if (file_size.is_error())
return vm.throw_completion<JS::TypeError>(global_object, strerror(file_size.error().code()));
auto* array = TRY(JS::Uint8Array::create(global_object, file_size.value()));
auto read = file.value()->read(array->data());
if (read.is_error())
return vm.throw_completion<JS::TypeError>(global_object, strerror(read.error().code()));
return JS::Value(array);
}
class WebAssemblyModule final : public JS::Object {
JS_OBJECT(WebAssemblyModule, JS::Object);
public:
explicit WebAssemblyModule(JS::Object& prototype)
: JS::Object(prototype)
{
m_machine.enable_instruction_count_limit();
}
static Wasm::AbstractMachine& machine() { return m_machine; }
Wasm::Module& module() { return *m_module; }
Wasm::ModuleInstance& module_instance() { return *m_module_instance; }
static JS::ThrowCompletionOr<WebAssemblyModule*> create(JS::GlobalObject& global_object, Wasm::Module module, HashMap<Wasm::Linker::Name, Wasm::ExternValue> const& imports)
{
auto& vm = global_object.vm();
auto* instance = global_object.heap().allocate<WebAssemblyModule>(global_object, *global_object.object_prototype());
instance->m_module = move(module);
Wasm::Linker linker(*instance->m_module);
linker.link(imports);
linker.link(spec_test_namespace());
auto link_result = linker.finish();
if (link_result.is_error())
return vm.throw_completion<JS::TypeError>(global_object, "Link failed");
auto result = machine().instantiate(*instance->m_module, link_result.release_value());
if (result.is_error())
return vm.throw_completion<JS::TypeError>(global_object, result.release_error().error);
instance->m_module_instance = result.release_value();
return instance;
}
void initialize(JS::Realm&) override;
~WebAssemblyModule() override = default;
private:
JS_DECLARE_NATIVE_FUNCTION(get_export);
JS_DECLARE_NATIVE_FUNCTION(wasm_invoke);
static HashMap<Wasm::Linker::Name, Wasm::ExternValue> const& spec_test_namespace()
{
if (!s_spec_test_namespace.is_empty())
return s_spec_test_namespace;
Wasm::FunctionType print_i32_type { { Wasm::ValueType(Wasm::ValueType::I32) }, {} };
auto address = m_machine.store().allocate(Wasm::HostFunction {
[](auto&, auto&) -> Wasm::Result {
// Noop, this just needs to exist.
return Wasm::Result { Vector<Wasm::Value> {} };
},
print_i32_type });
s_spec_test_namespace.set({ "spectest", "print_i32", print_i32_type }, Wasm::ExternValue { *address });
return s_spec_test_namespace;
}
static HashMap<Wasm::Linker::Name, Wasm::ExternValue> s_spec_test_namespace;
static Wasm::AbstractMachine m_machine;
Optional<Wasm::Module> m_module;
OwnPtr<Wasm::ModuleInstance> m_module_instance;
};
Wasm::AbstractMachine WebAssemblyModule::m_machine;
HashMap<Wasm::Linker::Name, Wasm::ExternValue> WebAssemblyModule::s_spec_test_namespace;
TESTJS_GLOBAL_FUNCTION(parse_webassembly_module, parseWebAssemblyModule)
{
auto* object = TRY(vm.argument(0).to_object(global_object));
if (!is<JS::Uint8Array>(object))
return vm.throw_completion<JS::TypeError>(global_object, "Expected a Uint8Array argument to parse_webassembly_module");
auto& array = static_cast<JS::Uint8Array&>(*object);
InputMemoryStream stream { array.data() };
ScopeGuard handle_stream_error {
[&] {
stream.handle_any_error();
}
};
auto result = Wasm::Module::parse(stream);
if (result.is_error())
return vm.throw_completion<JS::SyntaxError>(global_object, Wasm::parse_error_to_string(result.error()));
if (stream.handle_any_error())
return vm.throw_completion<JS::SyntaxError>(global_object, "Binary stream contained errors");
HashMap<Wasm::Linker::Name, Wasm::ExternValue> imports;
auto import_value = vm.argument(1);
if (import_value.is_object()) {
auto& import_object = import_value.as_object();
for (auto& property : import_object.shape().property_table()) {
auto value = import_object.get_without_side_effects(property.key);
if (!value.is_object() || !is<WebAssemblyModule>(value.as_object()))
continue;
auto& module_object = static_cast<WebAssemblyModule&>(value.as_object());
for (auto& entry : module_object.module_instance().exports()) {
// FIXME: Don't pretend that everything is a function
imports.set({ property.key.as_string(), entry.name(), Wasm::TypeIndex(0) }, entry.value());
}
}
}
return JS::Value(TRY(WebAssemblyModule::create(global_object, result.release_value(), imports)));
}
TESTJS_GLOBAL_FUNCTION(compare_typed_arrays, compareTypedArrays)
{
auto* lhs = TRY(vm.argument(0).to_object(global_object));
if (!is<JS::TypedArrayBase>(lhs))
return vm.throw_completion<JS::TypeError>(global_object, "Expected a TypedArray");
auto& lhs_array = static_cast<JS::TypedArrayBase&>(*lhs);
auto* rhs = TRY(vm.argument(1).to_object(global_object));
if (!is<JS::TypedArrayBase>(rhs))
return vm.throw_completion<JS::TypeError>(global_object, "Expected a TypedArray");
auto& rhs_array = static_cast<JS::TypedArrayBase&>(*rhs);
return JS::Value(lhs_array.viewed_array_buffer()->buffer() == rhs_array.viewed_array_buffer()->buffer());
}
void WebAssemblyModule::initialize(JS::Realm& realm)
{
Base::initialize(realm);
define_native_function("getExport", get_export, 1, JS::default_attributes);
define_native_function("invoke", wasm_invoke, 1, JS::default_attributes);
}
JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::get_export)
{
auto name = TRY(vm.argument(0).to_string(global_object));
auto this_value = vm.this_value(global_object);
auto* object = TRY(this_value.to_object(global_object));
if (!is<WebAssemblyModule>(object))
return vm.throw_completion<JS::TypeError>(global_object, "Not a WebAssemblyModule");
auto instance = static_cast<WebAssemblyModule*>(object);
for (auto& entry : instance->module_instance().exports()) {
if (entry.name() == name) {
auto& value = entry.value();
if (auto ptr = value.get_pointer<Wasm::FunctionAddress>())
return JS::Value(static_cast<unsigned long>(ptr->value()));
if (auto v = value.get_pointer<Wasm::GlobalAddress>()) {
return m_machine.store().get(*v)->value().value().visit(
[&](auto const& value) -> JS::Value { return JS::Value(static_cast<double>(value)); },
[&](i32 value) { return JS::Value(static_cast<double>(value)); },
[&](i64 value) -> JS::Value { return JS::js_bigint(vm, Crypto::SignedBigInteger::create_from(value)); },
[&](Wasm::Reference const& reference) -> JS::Value {
return reference.ref().visit(
[&](const Wasm::Reference::Null&) -> JS::Value { return JS::js_null(); },
[&](const auto& ref) -> JS::Value { return JS::Value(static_cast<double>(ref.address.value())); });
});
}
return vm.throw_completion<JS::TypeError>(global_object, String::formatted("'{}' does not refer to a function or a global", name));
}
}
return vm.throw_completion<JS::TypeError>(global_object, String::formatted("'{}' could not be found", name));
}
JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::wasm_invoke)
{
auto address = static_cast<unsigned long>(TRY(vm.argument(0).to_double(global_object)));
Wasm::FunctionAddress function_address { address };
auto function_instance = WebAssemblyModule::machine().store().get(function_address);
if (!function_instance)
return vm.throw_completion<JS::TypeError>(global_object, "Invalid function address");
Wasm::FunctionType const* type { nullptr };
function_instance->visit([&](auto& value) { type = &value.type(); });
if (!type)
return vm.throw_completion<JS::TypeError>(global_object, "Invalid function found at given address");
Vector<Wasm::Value> arguments;
if (type->parameters().size() + 1 > vm.argument_count())
return vm.throw_completion<JS::TypeError>(global_object, String::formatted("Expected {} arguments for call, but found {}", type->parameters().size() + 1, vm.argument_count()));
size_t index = 1;
for (auto& param : type->parameters()) {
auto argument = vm.argument(index++);
double double_value = 0;
if (!argument.is_bigint())
double_value = TRY(argument.to_double(global_object));
switch (param.kind()) {
case Wasm::ValueType::Kind::I32:
arguments.append(Wasm::Value(param, static_cast<u64>(double_value)));
break;
case Wasm::ValueType::Kind::I64:
if (argument.is_bigint()) {
auto value = TRY(argument.to_bigint_int64(global_object));
arguments.append(Wasm::Value(param, bit_cast<u64>(value)));
} else {
arguments.append(Wasm::Value(param, static_cast<u64>(double_value)));
}
break;
case Wasm::ValueType::Kind::F32:
arguments.append(Wasm::Value(static_cast<float>(double_value)));
break;
case Wasm::ValueType::Kind::F64:
arguments.append(Wasm::Value(static_cast<double>(double_value)));
break;
case Wasm::ValueType::Kind::FunctionReference:
arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Func { static_cast<u64>(double_value) } }));
break;
case Wasm::ValueType::Kind::ExternReference:
arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Func { static_cast<u64>(double_value) } }));
break;
case Wasm::ValueType::Kind::NullFunctionReference:
arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Null { Wasm::ValueType(Wasm::ValueType::Kind::FunctionReference) } }));
break;
case Wasm::ValueType::Kind::NullExternReference:
arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Null { Wasm::ValueType(Wasm::ValueType::Kind::ExternReference) } }));
break;
}
}
auto result = WebAssemblyModule::machine().invoke(function_address, arguments);
if (result.is_trap())
return vm.throw_completion<JS::TypeError>(global_object, String::formatted("Execution trapped: {}", result.trap().reason));
if (result.values().is_empty())
return JS::js_null();
JS::Value return_value;
result.values().first().value().visit(
[&](auto const& value) { return_value = JS::Value(static_cast<double>(value)); },
[&](i32 value) { return_value = JS::Value(static_cast<double>(value)); },
[&](i64 value) { return_value = JS::Value(JS::js_bigint(vm, Crypto::SignedBigInteger::create_from(value))); },
[&](Wasm::Reference const& reference) {
reference.ref().visit(
[&](const Wasm::Reference::Null&) { return_value = JS::js_null(); },
[&](const auto& ref) { return_value = JS::Value(static_cast<double>(ref.address.value())); });
});
return return_value;
}
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