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5db38d7ba1
Three standalone Cell creation functions remain in the JS namespace: - js_bigint() - js_string() - js_symbol() All of them are leftovers from early iterations when LibJS still took inspiration from JSC, which itself has jsString(). Nowadays, we pretty much exclusively use static create() functions to construct types allocated on the JS heap, and there's no reason to not do the same for these. Also change the return type from BigInt* to NonnullGCPtr<BigInt> while we're here. This is patch 1/3, replacement of js_string() and js_symbol() follow.
264 lines
12 KiB
C++
264 lines
12 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/Stream.h>
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#include <LibTest/JavaScriptTestRunner.h>
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#include <LibWasm/AbstractMachine/BytecodeInterpreter.h>
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#include <LibWasm/Types.h>
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#include <string.h>
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TEST_ROOT("Userland/Libraries/LibWasm/Tests");
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TESTJS_GLOBAL_FUNCTION(read_binary_wasm_file, readBinaryWasmFile)
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{
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auto& realm = *vm.current_realm();
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auto filename = TRY(vm.argument(0).to_string(vm));
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auto file = Core::Stream::File::open(filename, Core::Stream::OpenMode::Read);
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if (file.is_error())
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return vm.throw_completion<JS::TypeError>(strerror(file.error().code()));
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auto file_size = file.value()->size();
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if (file_size.is_error())
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return vm.throw_completion<JS::TypeError>(strerror(file_size.error().code()));
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auto* array = TRY(JS::Uint8Array::create(realm, file_size.value()));
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auto read = file.value()->read(array->data());
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if (read.is_error())
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return vm.throw_completion<JS::TypeError>(strerror(read.error().code()));
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return JS::Value(array);
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}
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class WebAssemblyModule final : public JS::Object {
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JS_OBJECT(WebAssemblyModule, JS::Object);
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public:
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explicit WebAssemblyModule(JS::Object& prototype)
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: JS::Object(prototype)
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{
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m_machine.enable_instruction_count_limit();
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}
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static Wasm::AbstractMachine& machine() { return m_machine; }
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Wasm::Module& module() { return *m_module; }
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Wasm::ModuleInstance& module_instance() { return *m_module_instance; }
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static JS::ThrowCompletionOr<WebAssemblyModule*> create(JS::Realm& realm, Wasm::Module module, HashMap<Wasm::Linker::Name, Wasm::ExternValue> const& imports)
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{
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auto& vm = realm.vm();
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auto* instance = realm.heap().allocate<WebAssemblyModule>(realm, *realm.intrinsics().object_prototype());
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instance->m_module = move(module);
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Wasm::Linker linker(*instance->m_module);
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linker.link(imports);
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linker.link(spec_test_namespace());
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auto link_result = linker.finish();
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if (link_result.is_error())
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return vm.throw_completion<JS::TypeError>("Link failed");
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auto result = machine().instantiate(*instance->m_module, link_result.release_value());
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if (result.is_error())
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return vm.throw_completion<JS::TypeError>(result.release_error().error);
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instance->m_module_instance = result.release_value();
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return instance;
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}
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void initialize(JS::Realm&) override;
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~WebAssemblyModule() override = default;
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private:
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JS_DECLARE_NATIVE_FUNCTION(get_export);
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JS_DECLARE_NATIVE_FUNCTION(wasm_invoke);
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static HashMap<Wasm::Linker::Name, Wasm::ExternValue> const& spec_test_namespace()
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{
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if (!s_spec_test_namespace.is_empty())
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return s_spec_test_namespace;
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Wasm::FunctionType print_i32_type { { Wasm::ValueType(Wasm::ValueType::I32) }, {} };
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auto address = m_machine.store().allocate(Wasm::HostFunction {
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[](auto&, auto&) -> Wasm::Result {
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// Noop, this just needs to exist.
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return Wasm::Result { Vector<Wasm::Value> {} };
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},
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print_i32_type });
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s_spec_test_namespace.set({ "spectest", "print_i32", print_i32_type }, Wasm::ExternValue { *address });
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return s_spec_test_namespace;
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}
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static HashMap<Wasm::Linker::Name, Wasm::ExternValue> s_spec_test_namespace;
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static Wasm::AbstractMachine m_machine;
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Optional<Wasm::Module> m_module;
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OwnPtr<Wasm::ModuleInstance> m_module_instance;
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};
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Wasm::AbstractMachine WebAssemblyModule::m_machine;
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HashMap<Wasm::Linker::Name, Wasm::ExternValue> WebAssemblyModule::s_spec_test_namespace;
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TESTJS_GLOBAL_FUNCTION(parse_webassembly_module, parseWebAssemblyModule)
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{
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auto& realm = *vm.current_realm();
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auto* object = TRY(vm.argument(0).to_object(vm));
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if (!is<JS::Uint8Array>(object))
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return vm.throw_completion<JS::TypeError>("Expected a Uint8Array argument to parse_webassembly_module");
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auto& array = static_cast<JS::Uint8Array&>(*object);
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InputMemoryStream stream { array.data() };
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ScopeGuard handle_stream_error {
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[&] {
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stream.handle_any_error();
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}
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};
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auto result = Wasm::Module::parse(stream);
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if (result.is_error())
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return vm.throw_completion<JS::SyntaxError>(Wasm::parse_error_to_deprecated_string(result.error()));
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if (stream.handle_any_error())
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return vm.throw_completion<JS::SyntaxError>("Binary stream contained errors");
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HashMap<Wasm::Linker::Name, Wasm::ExternValue> imports;
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auto import_value = vm.argument(1);
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if (import_value.is_object()) {
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auto& import_object = import_value.as_object();
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for (auto& property : import_object.shape().property_table()) {
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auto value = import_object.get_without_side_effects(property.key);
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if (!value.is_object() || !is<WebAssemblyModule>(value.as_object()))
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continue;
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auto& module_object = static_cast<WebAssemblyModule&>(value.as_object());
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for (auto& entry : module_object.module_instance().exports()) {
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// FIXME: Don't pretend that everything is a function
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imports.set({ property.key.as_string(), entry.name(), Wasm::TypeIndex(0) }, entry.value());
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}
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}
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}
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return JS::Value(TRY(WebAssemblyModule::create(realm, result.release_value(), imports)));
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}
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TESTJS_GLOBAL_FUNCTION(compare_typed_arrays, compareTypedArrays)
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{
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auto* lhs = TRY(vm.argument(0).to_object(vm));
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if (!is<JS::TypedArrayBase>(lhs))
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return vm.throw_completion<JS::TypeError>("Expected a TypedArray");
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auto& lhs_array = static_cast<JS::TypedArrayBase&>(*lhs);
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auto* rhs = TRY(vm.argument(1).to_object(vm));
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if (!is<JS::TypedArrayBase>(rhs))
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return vm.throw_completion<JS::TypeError>("Expected a TypedArray");
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auto& rhs_array = static_cast<JS::TypedArrayBase&>(*rhs);
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return JS::Value(lhs_array.viewed_array_buffer()->buffer() == rhs_array.viewed_array_buffer()->buffer());
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}
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void WebAssemblyModule::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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define_native_function(realm, "getExport", get_export, 1, JS::default_attributes);
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define_native_function(realm, "invoke", wasm_invoke, 1, JS::default_attributes);
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}
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JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::get_export)
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{
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auto name = TRY(vm.argument(0).to_string(vm));
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auto this_value = vm.this_value();
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auto* object = TRY(this_value.to_object(vm));
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if (!is<WebAssemblyModule>(object))
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return vm.throw_completion<JS::TypeError>("Not a WebAssemblyModule");
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auto instance = static_cast<WebAssemblyModule*>(object);
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for (auto& entry : instance->module_instance().exports()) {
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if (entry.name() == name) {
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auto& value = entry.value();
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if (auto ptr = value.get_pointer<Wasm::FunctionAddress>())
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return JS::Value(static_cast<unsigned long>(ptr->value()));
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if (auto v = value.get_pointer<Wasm::GlobalAddress>()) {
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return m_machine.store().get(*v)->value().value().visit(
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[&](auto const& value) -> JS::Value { return JS::Value(static_cast<double>(value)); },
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[&](i32 value) { return JS::Value(static_cast<double>(value)); },
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[&](i64 value) -> JS::Value { return JS::BigInt::create(vm, Crypto::SignedBigInteger { value }); },
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[&](Wasm::Reference const& reference) -> JS::Value {
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return reference.ref().visit(
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[&](const Wasm::Reference::Null&) -> JS::Value { return JS::js_null(); },
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[&](const auto& ref) -> JS::Value { return JS::Value(static_cast<double>(ref.address.value())); });
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});
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}
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return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' does not refer to a function or a global", name));
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}
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}
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return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' could not be found", name));
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}
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JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::wasm_invoke)
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{
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auto address = static_cast<unsigned long>(TRY(vm.argument(0).to_double(vm)));
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Wasm::FunctionAddress function_address { address };
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auto function_instance = WebAssemblyModule::machine().store().get(function_address);
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if (!function_instance)
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return vm.throw_completion<JS::TypeError>("Invalid function address");
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Wasm::FunctionType const* type { nullptr };
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function_instance->visit([&](auto& value) { type = &value.type(); });
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if (!type)
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return vm.throw_completion<JS::TypeError>("Invalid function found at given address");
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Vector<Wasm::Value> arguments;
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if (type->parameters().size() + 1 > vm.argument_count())
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return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Expected {} arguments for call, but found {}", type->parameters().size() + 1, vm.argument_count()));
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size_t index = 1;
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for (auto& param : type->parameters()) {
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auto argument = vm.argument(index++);
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double double_value = 0;
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if (!argument.is_bigint())
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double_value = TRY(argument.to_double(vm));
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switch (param.kind()) {
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case Wasm::ValueType::Kind::I32:
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arguments.append(Wasm::Value(param, static_cast<u64>(double_value)));
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break;
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case Wasm::ValueType::Kind::I64:
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if (argument.is_bigint()) {
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auto value = TRY(argument.to_bigint_int64(vm));
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arguments.append(Wasm::Value(param, bit_cast<u64>(value)));
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} else {
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arguments.append(Wasm::Value(param, static_cast<u64>(double_value)));
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}
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break;
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case Wasm::ValueType::Kind::F32:
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arguments.append(Wasm::Value(static_cast<float>(double_value)));
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break;
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case Wasm::ValueType::Kind::F64:
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arguments.append(Wasm::Value(static_cast<double>(double_value)));
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break;
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case Wasm::ValueType::Kind::FunctionReference:
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arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Func { static_cast<u64>(double_value) } }));
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break;
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case Wasm::ValueType::Kind::ExternReference:
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arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Func { static_cast<u64>(double_value) } }));
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break;
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case Wasm::ValueType::Kind::NullFunctionReference:
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arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Null { Wasm::ValueType(Wasm::ValueType::Kind::FunctionReference) } }));
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break;
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case Wasm::ValueType::Kind::NullExternReference:
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arguments.append(Wasm::Value(Wasm::Reference { Wasm::Reference::Null { Wasm::ValueType(Wasm::ValueType::Kind::ExternReference) } }));
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break;
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}
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}
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auto result = WebAssemblyModule::machine().invoke(function_address, arguments);
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if (result.is_trap())
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return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Execution trapped: {}", result.trap().reason));
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if (result.values().is_empty())
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return JS::js_null();
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JS::Value return_value;
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result.values().first().value().visit(
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[&](auto const& value) { return_value = JS::Value(static_cast<double>(value)); },
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[&](i32 value) { return_value = JS::Value(static_cast<double>(value)); },
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[&](i64 value) { return_value = JS::Value(JS::BigInt::create(vm, Crypto::SignedBigInteger { value })); },
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[&](Wasm::Reference const& reference) {
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reference.ref().visit(
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[&](const Wasm::Reference::Null&) { return_value = JS::js_null(); },
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[&](const auto& ref) { return_value = JS::Value(static_cast<double>(ref.address.value())); });
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});
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return return_value;
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}
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