/* * Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org> * * SPDX-License-Identifier: BSD-2-Clause */ #pragma once #include <LibJS/Runtime/Object.h> #include <LibWasm/AbstractMachine/AbstractMachine.h> #include <LibWeb/Forward.h> #include <LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.h> namespace Web::Bindings { class WebAssemblyMemoryObject; Result<size_t, JS::Value> parse_module(JS::GlobalObject& global_object, JS::Object* buffer); JS::NativeFunction* create_native_function(Wasm::FunctionAddress address, String name, JS::GlobalObject& global_object); JS::Value to_js_value(Wasm::Value& wasm_value, JS::GlobalObject& global_object); Optional<Wasm::Value> to_webassembly_value(JS::Value value, const Wasm::ValueType& type, JS::GlobalObject& global_object); class WebAssemblyObject final : public JS::Object { JS_OBJECT(WebAssemblyObject, JS::Object); public: explicit WebAssemblyObject(JS::GlobalObject&); virtual void initialize(JS::GlobalObject&) override; virtual ~WebAssemblyObject() override = default; virtual void visit_edges(Cell::Visitor&) override; static Result<size_t, JS::Value> instantiate_module(Wasm::Module const&, JS::VM&, JS::GlobalObject&); struct CompiledWebAssemblyModule { explicit CompiledWebAssemblyModule(Wasm::Module&& module) : module(move(module)) { } Wasm::Module module; }; // FIXME: These should just be members of the module (instance) object, // but the module needs to stick around while its instance is alive // so ideally this would be a refcounted object, shared between // WebAssemblyModuleObject's and WebAssemblyInstantiatedModuleObject's. struct ModuleCache { HashMap<Wasm::FunctionAddress, JS::FunctionObject*> function_instances; HashMap<Wasm::MemoryAddress, WebAssemblyMemoryObject*> memory_instances; }; struct GlobalModuleCache { HashMap<Wasm::FunctionAddress, JS::NativeFunction*> function_instances; }; static NonnullOwnPtrVector<CompiledWebAssemblyModule> s_compiled_modules; static NonnullOwnPtrVector<Wasm::ModuleInstance> s_instantiated_modules; static Vector<ModuleCache> s_module_caches; static GlobalModuleCache s_global_cache; static Wasm::AbstractMachine s_abstract_machine; private: JS_DECLARE_NATIVE_FUNCTION(validate); JS_DECLARE_NATIVE_FUNCTION(compile); JS_DECLARE_NATIVE_FUNCTION(instantiate); }; class WebAssemblyMemoryObject final : public JS::Object { JS_OBJECT(WebAssemblyMemoryObject, JS::Object); public: explicit WebAssemblyMemoryObject(JS::GlobalObject&, Wasm::MemoryAddress); virtual ~WebAssemblyMemoryObject() override = default; auto address() const { return m_address; } private: Wasm::MemoryAddress m_address; }; }