mirror of
https://github.com/LadybirdBrowser/ladybird.git
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b99cc7d050
This is a continuation of the previous two commits. As allocating a JS cell already primarily involves a realm instead of a global object, and we'll need to pass one to the allocate() function itself eventually (it's bridged via the global object right now), the create() functions need to receive a realm as well. The plan is for this to be the highest-level function that actually receives a realm and passes it around, AOs on an even higher level will use the "current realm" concept via VM::current_realm() as that's what the spec assumes; passing around realms (or global objects, for that matter) on higher AO levels is pointless and unlike for allocating individual objects, which may happen outside of regular JS execution, we don't need control over the specific realm that is being used there.
263 lines
12 KiB
C++
263 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 = *global_object.associated_realm();
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auto filename = TRY(vm.argument(0).to_string(global_object));
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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>(global_object, 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>(global_object, 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>(global_object, 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.global_object(), *realm.global_object().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>(realm.global_object(), "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>(realm.global_object(), 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 = *global_object.associated_realm();
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auto* object = TRY(vm.argument(0).to_object(global_object));
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if (!is<JS::Uint8Array>(object))
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return vm.throw_completion<JS::TypeError>(global_object, "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>(global_object, Wasm::parse_error_to_string(result.error()));
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if (stream.handle_any_error())
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return vm.throw_completion<JS::SyntaxError>(global_object, "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(global_object));
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if (!is<JS::TypedArrayBase>(lhs))
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return vm.throw_completion<JS::TypeError>(global_object, "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(global_object));
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if (!is<JS::TypedArrayBase>(rhs))
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return vm.throw_completion<JS::TypeError>(global_object, "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("getExport", get_export, 1, JS::default_attributes);
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define_native_function("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(global_object));
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auto this_value = vm.this_value(global_object);
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auto* object = TRY(this_value.to_object(global_object));
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if (!is<WebAssemblyModule>(object))
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return vm.throw_completion<JS::TypeError>(global_object, "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::js_bigint(vm, Crypto::SignedBigInteger::create_from(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>(global_object, String::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>(global_object, String::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(global_object)));
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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>(global_object, "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>(global_object, "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>(global_object, String::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(global_object));
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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(global_object));
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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>(global_object, String::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::js_bigint(vm, Crypto::SignedBigInteger::create_from(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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