LibWasm+Everywhere: Make the instruction count limit configurable

...and enable it for LibWeb and test-wasm.
Note that `wasm` will not be limited by this.

Tests/LibWasm/test-wasm.cpp

@@ -34,6 +34,7 @@ public:
     explicit WebAssemblyModule(JS::Object& prototype)
         : JS::Object(prototype)
     {
+        m_machine.enable_instruction_count_limit();
     }
 
     static Wasm::AbstractMachine& machine() { return m_machine; }

Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.cpp

@@ -128,6 +128,8 @@ InstantiationResult AbstractMachine::instantiate(Module const& module, Vector<Ex
     module.for_each_section_of_type<GlobalSection>([&](auto& global_section) {
         for (auto& entry : global_section.entries()) {
             Configuration config { m_store };
+            if (m_should_limit_instruction_count)
+                config.enable_instruction_count_limit();
             config.set_frame(Frame {
                 auxiliary_instance,
                 Vector<Value> {},
@@ -153,6 +155,8 @@ InstantiationResult AbstractMachine::instantiate(Module const& module, Vector<Ex
             Vector<Reference> references;
             for (auto& entry : segment.init) {
                 Configuration config { m_store };
+                if (m_should_limit_instruction_count)
+                    config.enable_instruction_count_limit();
                 config.set_frame(Frame {
                     main_module_instance,
                     Vector<Value> {},
@@ -204,6 +208,8 @@ InstantiationResult AbstractMachine::instantiate(Module const& module, Vector<Ex
                 return IterationDecision::Break;
             }
             Configuration config { m_store };
+            if (m_should_limit_instruction_count)
+                config.enable_instruction_count_limit();
             config.set_frame(Frame {
                 main_module_instance,
                 Vector<Value> {},
@@ -262,6 +268,8 @@ InstantiationResult AbstractMachine::instantiate(Module const& module, Vector<Ex
             segment.value().visit(
                 [&](DataSection::Data::Active const& data) {
                     Configuration config { m_store };
+                    if (m_should_limit_instruction_count)
+                        config.enable_instruction_count_limit();
                     config.set_frame(Frame {
                         main_module_instance,
                         Vector<Value> {},
@@ -439,6 +447,8 @@ Result AbstractMachine::invoke(FunctionAddress address, Vector<Value> arguments)
 Result AbstractMachine::invoke(Interpreter& interpreter, FunctionAddress address, Vector<Value> arguments)
 {
     Configuration configuration { m_store };
+    if (m_should_limit_instruction_count)
+        configuration.enable_instruction_count_limit();
     return configuration.call(interpreter, address, move(arguments));
 }
 

Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h

@@ -505,10 +505,13 @@ public:
     auto& store() const { return m_store; }
     auto& store() { return m_store; }
 
+    void enable_instruction_count_limit() { m_should_limit_instruction_count = true; }
+
 private:
     Optional<InstantiationError> allocate_all_initial_phase(Module const&, ModuleInstance&, Vector<ExternValue>&, Vector<Value>& global_values);
     Optional<InstantiationError> allocate_all_final_phase(Module const&, ModuleInstance&, Vector<Vector<Reference>>& elements);
     Store m_store;
+    bool m_should_limit_instruction_count { false };
 };
 
 class Linker {

Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp

@@ -37,12 +37,15 @@ void BytecodeInterpreter::interpret(Configuration& configuration)
     auto& instructions = configuration.frame().expression().instructions();
     auto max_ip_value = InstructionPointer { instructions.size() };
     auto& current_ip_value = configuration.ip();
+    auto const should_limit_instruction_count = configuration.should_limit_instruction_count();
     u64 executed_instructions = 0;
 
     while (current_ip_value < max_ip_value) {
-        if (executed_instructions++ >= Constants::max_allowed_executed_instructions_per_call) [[unlikely]] {
+        if (should_limit_instruction_count) {
-            m_trap = Trap { "Exceeded maximum allowed number of instructions" };
+            if (executed_instructions++ >= Constants::max_allowed_executed_instructions_per_call) [[unlikely]] {
-            return;
+                m_trap = Trap { "Exceeded maximum allowed number of instructions" };
+                return;
+            }
         }
         auto& instruction = instructions[current_ip_value.value()];
         auto old_ip = current_ip_value;

Userland/Libraries/LibWasm/AbstractMachine/Configuration.h

@@ -61,6 +61,9 @@ public:
     Result call(Interpreter&, FunctionAddress, Vector<Value> arguments);
     Result execute(Interpreter&);
 
+    void enable_instruction_count_limit() { m_should_limit_instruction_count = true; }
+    bool should_limit_instruction_count() const { return m_should_limit_instruction_count; }
+
     void dump_stack();
 
 private:
@@ -69,6 +72,7 @@ private:
     Stack m_stack;
     size_t m_depth { 0 };
     InstructionPointer m_ip;
+    bool m_should_limit_instruction_count { false };
 };
 
 }

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyObject.cpp

@@ -25,6 +25,7 @@ namespace Web::Bindings {
 WebAssemblyObject::WebAssemblyObject(JS::GlobalObject& global_object)
     : Object(*global_object.object_prototype())
 {
+    s_abstract_machine.enable_instruction_count_limit();
 }
 
 void WebAssemblyObject::initialize(JS::GlobalObject& global_object)