abbaac4845
TBR=mvstanton@chromium.org Review URL: https://codereview.chromium.org/1124403006 Cr-Commit-Position: refs/heads/master@{#28415}
3033 lines
121 KiB
C++
3033 lines
121 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/bootstrapper.h"
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#include "src/accessors.h"
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#include "src/api-natives.h"
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#include "src/base/utils/random-number-generator.h"
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#include "src/code-stubs.h"
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#include "src/extensions/externalize-string-extension.h"
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#include "src/extensions/free-buffer-extension.h"
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#include "src/extensions/gc-extension.h"
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#include "src/extensions/statistics-extension.h"
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#include "src/extensions/trigger-failure-extension.h"
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#include "src/snapshot/natives.h"
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#include "src/snapshot/snapshot.h"
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#include "third_party/fdlibm/fdlibm.h"
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namespace v8 {
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namespace internal {
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Bootstrapper::Bootstrapper(Isolate* isolate)
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: isolate_(isolate),
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nesting_(0),
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extensions_cache_(Script::TYPE_EXTENSION) {}
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template <class Source>
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inline FixedArray* GetCache(Heap* heap);
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template <>
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FixedArray* GetCache<Natives>(Heap* heap) {
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return heap->natives_source_cache();
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}
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template <>
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FixedArray* GetCache<ExperimentalNatives>(Heap* heap) {
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return heap->experimental_natives_source_cache();
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}
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template <>
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FixedArray* GetCache<ExtraNatives>(Heap* heap) {
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return heap->extra_natives_source_cache();
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}
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template <class Source>
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Handle<String> Bootstrapper::SourceLookup(int index) {
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DCHECK(0 <= index && index < Source::GetBuiltinsCount());
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Heap* heap = isolate_->heap();
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if (GetCache<Source>(heap)->get(index)->IsUndefined()) {
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// We can use external strings for the natives.
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Vector<const char> source = Source::GetScriptSource(index);
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NativesExternalStringResource* resource =
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new NativesExternalStringResource(source.start(), source.length());
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// We do not expect this to throw an exception. Change this if it does.
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Handle<String> source_code = isolate_->factory()
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->NewExternalStringFromOneByte(resource)
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.ToHandleChecked();
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// Mark this external string with a special map.
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source_code->set_map(isolate_->heap()->native_source_string_map());
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GetCache<Source>(heap)->set(index, *source_code);
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}
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Handle<Object> cached_source(GetCache<Source>(heap)->get(index), isolate_);
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return Handle<String>::cast(cached_source);
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}
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template Handle<String> Bootstrapper::SourceLookup<Natives>(int index);
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template Handle<String> Bootstrapper::SourceLookup<ExperimentalNatives>(
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int index);
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template Handle<String> Bootstrapper::SourceLookup<ExtraNatives>(int index);
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void Bootstrapper::Initialize(bool create_heap_objects) {
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extensions_cache_.Initialize(isolate_, create_heap_objects);
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}
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static const char* GCFunctionName() {
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bool flag_given = FLAG_expose_gc_as != NULL && strlen(FLAG_expose_gc_as) != 0;
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return flag_given ? FLAG_expose_gc_as : "gc";
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}
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v8::Extension* Bootstrapper::free_buffer_extension_ = NULL;
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v8::Extension* Bootstrapper::gc_extension_ = NULL;
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v8::Extension* Bootstrapper::externalize_string_extension_ = NULL;
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v8::Extension* Bootstrapper::statistics_extension_ = NULL;
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v8::Extension* Bootstrapper::trigger_failure_extension_ = NULL;
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void Bootstrapper::InitializeOncePerProcess() {
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free_buffer_extension_ = new FreeBufferExtension;
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v8::RegisterExtension(free_buffer_extension_);
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gc_extension_ = new GCExtension(GCFunctionName());
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v8::RegisterExtension(gc_extension_);
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externalize_string_extension_ = new ExternalizeStringExtension;
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v8::RegisterExtension(externalize_string_extension_);
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statistics_extension_ = new StatisticsExtension;
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v8::RegisterExtension(statistics_extension_);
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trigger_failure_extension_ = new TriggerFailureExtension;
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v8::RegisterExtension(trigger_failure_extension_);
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}
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void Bootstrapper::TearDownExtensions() {
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delete free_buffer_extension_;
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free_buffer_extension_ = NULL;
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delete gc_extension_;
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gc_extension_ = NULL;
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delete externalize_string_extension_;
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externalize_string_extension_ = NULL;
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delete statistics_extension_;
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statistics_extension_ = NULL;
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delete trigger_failure_extension_;
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trigger_failure_extension_ = NULL;
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}
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void DeleteNativeSources(Object* maybe_array) {
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if (maybe_array->IsFixedArray()) {
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FixedArray* array = FixedArray::cast(maybe_array);
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for (int i = 0; i < array->length(); i++) {
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Object* natives_source = array->get(i);
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if (!natives_source->IsUndefined()) {
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const NativesExternalStringResource* resource =
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reinterpret_cast<const NativesExternalStringResource*>(
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ExternalOneByteString::cast(natives_source)->resource());
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delete resource;
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}
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}
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}
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}
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void Bootstrapper::TearDown() {
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DeleteNativeSources(isolate_->heap()->natives_source_cache());
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DeleteNativeSources(isolate_->heap()->experimental_natives_source_cache());
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DeleteNativeSources(isolate_->heap()->extra_natives_source_cache());
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extensions_cache_.Initialize(isolate_, false); // Yes, symmetrical
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}
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class Genesis BASE_EMBEDDED {
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public:
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Genesis(Isolate* isolate,
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MaybeHandle<JSGlobalProxy> maybe_global_proxy,
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v8::Handle<v8::ObjectTemplate> global_proxy_template,
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v8::ExtensionConfiguration* extensions);
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~Genesis() { }
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Isolate* isolate() const { return isolate_; }
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Factory* factory() const { return isolate_->factory(); }
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Heap* heap() const { return isolate_->heap(); }
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Handle<Context> result() { return result_; }
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private:
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Handle<Context> native_context() { return native_context_; }
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// Creates some basic objects. Used for creating a context from scratch.
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void CreateRoots();
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// Creates the empty function. Used for creating a context from scratch.
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Handle<JSFunction> CreateEmptyFunction(Isolate* isolate);
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// Creates the ThrowTypeError function. ECMA 5th Ed. 13.2.3
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Handle<JSFunction> GetRestrictedFunctionPropertiesThrower();
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Handle<JSFunction> GetStrictArgumentsPoisonFunction();
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Handle<JSFunction> GetThrowTypeErrorIntrinsic(Builtins::Name builtin_name);
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void CreateStrictModeFunctionMaps(Handle<JSFunction> empty);
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void CreateStrongModeFunctionMaps(Handle<JSFunction> empty);
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// Make the "arguments" and "caller" properties throw a TypeError on access.
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void AddRestrictedFunctionProperties(Handle<Map> map);
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// Creates the global objects using the global proxy and the template passed
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// in through the API. We call this regardless of whether we are building a
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// context from scratch or using a deserialized one from the partial snapshot
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// but in the latter case we don't use the objects it produces directly, as
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// we have to used the deserialized ones that are linked together with the
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// rest of the context snapshot.
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Handle<GlobalObject> CreateNewGlobals(
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v8::Handle<v8::ObjectTemplate> global_proxy_template,
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Handle<JSGlobalProxy> global_proxy);
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// Hooks the given global proxy into the context. If the context was created
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// by deserialization then this will unhook the global proxy that was
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// deserialized, leaving the GC to pick it up.
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void HookUpGlobalProxy(Handle<GlobalObject> global_object,
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Handle<JSGlobalProxy> global_proxy);
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// Similarly, we want to use the global that has been created by the templates
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// passed through the API. The global from the snapshot is detached from the
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// other objects in the snapshot.
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void HookUpGlobalObject(Handle<GlobalObject> global_object,
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Handle<FixedArray> outdated_contexts);
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// New context initialization. Used for creating a context from scratch.
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void InitializeGlobal(Handle<GlobalObject> global_object,
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Handle<JSFunction> empty_function);
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void InitializeExperimentalGlobal();
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// Installs the contents of the native .js files on the global objects.
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// Used for creating a context from scratch.
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void InstallNativeFunctions();
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void InstallExperimentalNativeFunctions();
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// Typed arrays are not serializable and have to initialized afterwards.
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void InitializeBuiltinTypedArrays();
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#define DECLARE_FEATURE_INITIALIZATION(id, descr) \
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void InstallNativeFunctions_##id(); \
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void InitializeGlobal_##id();
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HARMONY_INPROGRESS(DECLARE_FEATURE_INITIALIZATION)
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HARMONY_STAGED(DECLARE_FEATURE_INITIALIZATION)
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HARMONY_SHIPPING(DECLARE_FEATURE_INITIALIZATION)
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#undef DECLARE_FEATURE_INITIALIZATION
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Handle<JSFunction> InstallInternalArray(Handle<JSObject> target,
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const char* name,
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ElementsKind elements_kind);
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bool InstallNatives();
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void InstallTypedArray(
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const char* name,
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ElementsKind elements_kind,
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Handle<JSFunction>* fun,
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Handle<Map>* external_map);
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bool InstallExperimentalNatives();
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bool InstallExtraNatives();
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void InstallBuiltinFunctionIds();
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void InstallJSFunctionResultCaches();
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void InitializeNormalizedMapCaches();
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enum ExtensionTraversalState {
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UNVISITED, VISITED, INSTALLED
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};
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class ExtensionStates {
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public:
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ExtensionStates();
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ExtensionTraversalState get_state(RegisteredExtension* extension);
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void set_state(RegisteredExtension* extension,
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ExtensionTraversalState state);
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private:
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HashMap map_;
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DISALLOW_COPY_AND_ASSIGN(ExtensionStates);
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};
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// Used both for deserialized and from-scratch contexts to add the extensions
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// provided.
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static bool InstallExtensions(Handle<Context> native_context,
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v8::ExtensionConfiguration* extensions);
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static bool InstallAutoExtensions(Isolate* isolate,
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ExtensionStates* extension_states);
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static bool InstallRequestedExtensions(Isolate* isolate,
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v8::ExtensionConfiguration* extensions,
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ExtensionStates* extension_states);
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static bool InstallExtension(Isolate* isolate,
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const char* name,
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ExtensionStates* extension_states);
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static bool InstallExtension(Isolate* isolate,
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v8::RegisteredExtension* current,
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ExtensionStates* extension_states);
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static bool InstallSpecialObjects(Handle<Context> native_context);
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bool InstallJSBuiltins(Handle<JSBuiltinsObject> builtins);
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bool ConfigureApiObject(Handle<JSObject> object,
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Handle<ObjectTemplateInfo> object_template);
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bool ConfigureGlobalObjects(
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v8::Handle<v8::ObjectTemplate> global_proxy_template);
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// Migrates all properties from the 'from' object to the 'to'
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// object and overrides the prototype in 'to' with the one from
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// 'from'.
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void TransferObject(Handle<JSObject> from, Handle<JSObject> to);
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void TransferNamedProperties(Handle<JSObject> from, Handle<JSObject> to);
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void TransferIndexedProperties(Handle<JSObject> from, Handle<JSObject> to);
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enum FunctionMode {
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// With prototype.
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FUNCTION_WITH_WRITEABLE_PROTOTYPE,
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FUNCTION_WITH_READONLY_PROTOTYPE,
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// Without prototype.
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FUNCTION_WITHOUT_PROTOTYPE,
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BOUND_FUNCTION
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};
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static bool IsFunctionModeWithPrototype(FunctionMode function_mode) {
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return (function_mode == FUNCTION_WITH_WRITEABLE_PROTOTYPE ||
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function_mode == FUNCTION_WITH_READONLY_PROTOTYPE);
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}
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Handle<Map> CreateSloppyFunctionMap(FunctionMode function_mode);
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void SetFunctionInstanceDescriptor(Handle<Map> map,
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FunctionMode function_mode);
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void MakeFunctionInstancePrototypeWritable();
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Handle<Map> CreateStrictFunctionMap(FunctionMode function_mode,
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Handle<JSFunction> empty_function);
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Handle<Map> CreateStrongFunctionMap(Handle<JSFunction> empty_function,
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bool is_constructor);
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void SetStrictFunctionInstanceDescriptor(Handle<Map> map,
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FunctionMode function_mode);
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void SetStrongFunctionInstanceDescriptor(Handle<Map> map);
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static bool CompileBuiltin(Isolate* isolate, int index,
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Handle<JSObject> shared);
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static bool CompileExperimentalBuiltin(Isolate* isolate, int index);
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static bool CompileExtraBuiltin(Isolate* isolate, int index);
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static bool CompileNative(Isolate* isolate, Vector<const char> name,
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Handle<String> source, int argc,
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Handle<Object> argv[]);
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static bool CompileExtension(Isolate* isolate, v8::Extension* extension);
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Isolate* isolate_;
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Handle<Context> result_;
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Handle<Context> native_context_;
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// Function maps. Function maps are created initially with a read only
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// prototype for the processing of JS builtins. Later the function maps are
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// replaced in order to make prototype writable. These are the final, writable
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// prototype, maps.
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Handle<Map> sloppy_function_map_writable_prototype_;
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Handle<Map> strict_function_map_writable_prototype_;
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Handle<JSFunction> strict_poison_function_;
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Handle<JSFunction> restricted_function_properties_thrower_;
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BootstrapperActive active_;
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friend class Bootstrapper;
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};
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void Bootstrapper::Iterate(ObjectVisitor* v) {
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extensions_cache_.Iterate(v);
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v->Synchronize(VisitorSynchronization::kExtensions);
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}
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Handle<Context> Bootstrapper::CreateEnvironment(
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MaybeHandle<JSGlobalProxy> maybe_global_proxy,
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v8::Handle<v8::ObjectTemplate> global_proxy_template,
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v8::ExtensionConfiguration* extensions) {
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HandleScope scope(isolate_);
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Genesis genesis(
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isolate_, maybe_global_proxy, global_proxy_template, extensions);
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Handle<Context> env = genesis.result();
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if (env.is_null() || !InstallExtensions(env, extensions)) {
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return Handle<Context>();
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}
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return scope.CloseAndEscape(env);
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}
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static void SetObjectPrototype(Handle<JSObject> object, Handle<Object> proto) {
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// object.__proto__ = proto;
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Handle<Map> old_map = Handle<Map>(object->map());
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Handle<Map> new_map = Map::Copy(old_map, "SetObjectPrototype");
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Map::SetPrototype(new_map, proto, FAST_PROTOTYPE);
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JSObject::MigrateToMap(object, new_map);
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}
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void Bootstrapper::DetachGlobal(Handle<Context> env) {
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Factory* factory = env->GetIsolate()->factory();
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Handle<JSGlobalProxy> global_proxy(JSGlobalProxy::cast(env->global_proxy()));
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global_proxy->set_native_context(*factory->null_value());
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SetObjectPrototype(global_proxy, factory->null_value());
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global_proxy->map()->SetConstructor(*factory->null_value());
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if (FLAG_track_detached_contexts) {
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env->GetIsolate()->AddDetachedContext(env);
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}
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}
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static Handle<JSFunction> InstallFunction(Handle<JSObject> target,
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const char* name, InstanceType type,
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int instance_size,
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MaybeHandle<JSObject> maybe_prototype,
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Builtins::Name call,
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bool strict_function_map = false) {
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Isolate* isolate = target->GetIsolate();
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Factory* factory = isolate->factory();
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Handle<String> internalized_name = factory->InternalizeUtf8String(name);
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Handle<Code> call_code = Handle<Code>(isolate->builtins()->builtin(call));
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Handle<JSObject> prototype;
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static const bool kReadOnlyPrototype = false;
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static const bool kInstallConstructor = false;
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Handle<JSFunction> function =
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maybe_prototype.ToHandle(&prototype)
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? factory->NewFunction(internalized_name, call_code, prototype, type,
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instance_size, kReadOnlyPrototype,
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kInstallConstructor, strict_function_map)
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: factory->NewFunctionWithoutPrototype(internalized_name, call_code,
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strict_function_map);
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PropertyAttributes attributes;
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if (target->IsJSBuiltinsObject()) {
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attributes =
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static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
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} else {
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attributes = DONT_ENUM;
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}
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JSObject::AddProperty(target, internalized_name, function, attributes);
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if (target->IsJSGlobalObject()) {
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function->shared()->set_instance_class_name(*internalized_name);
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}
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function->shared()->set_native(true);
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return function;
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}
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void Genesis::SetFunctionInstanceDescriptor(Handle<Map> map,
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FunctionMode function_mode) {
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int size = IsFunctionModeWithPrototype(function_mode) ? 5 : 4;
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Map::EnsureDescriptorSlack(map, size);
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PropertyAttributes ro_attribs =
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static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
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PropertyAttributes roc_attribs =
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static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);
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Handle<AccessorInfo> length =
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Accessors::FunctionLengthInfo(isolate(), roc_attribs);
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{ // Add length.
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AccessorConstantDescriptor d(Handle<Name>(Name::cast(length->name())),
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length, roc_attribs);
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map->AppendDescriptor(&d);
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}
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Handle<AccessorInfo> name =
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Accessors::FunctionNameInfo(isolate(), ro_attribs);
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{ // Add name.
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AccessorConstantDescriptor d(Handle<Name>(Name::cast(name->name())), name,
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roc_attribs);
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map->AppendDescriptor(&d);
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}
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Handle<AccessorInfo> args =
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Accessors::FunctionArgumentsInfo(isolate(), ro_attribs);
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{ // Add arguments.
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AccessorConstantDescriptor d(Handle<Name>(Name::cast(args->name())), args,
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ro_attribs);
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map->AppendDescriptor(&d);
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}
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Handle<AccessorInfo> caller =
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Accessors::FunctionCallerInfo(isolate(), ro_attribs);
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{ // Add caller.
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AccessorConstantDescriptor d(Handle<Name>(Name::cast(caller->name())),
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caller, ro_attribs);
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map->AppendDescriptor(&d);
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}
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if (IsFunctionModeWithPrototype(function_mode)) {
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if (function_mode == FUNCTION_WITH_WRITEABLE_PROTOTYPE) {
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ro_attribs = static_cast<PropertyAttributes>(ro_attribs & ~READ_ONLY);
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}
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Handle<AccessorInfo> prototype =
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Accessors::FunctionPrototypeInfo(isolate(), ro_attribs);
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AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())),
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prototype, ro_attribs);
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map->AppendDescriptor(&d);
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}
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}
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Handle<Map> Genesis::CreateSloppyFunctionMap(FunctionMode function_mode) {
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Handle<Map> map = factory()->NewMap(JS_FUNCTION_TYPE, JSFunction::kSize);
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SetFunctionInstanceDescriptor(map, function_mode);
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map->set_function_with_prototype(IsFunctionModeWithPrototype(function_mode));
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return map;
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}
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Handle<JSFunction> Genesis::CreateEmptyFunction(Isolate* isolate) {
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// Allocate the map for function instances. Maps are allocated first and their
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// prototypes patched later, once empty function is created.
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// Functions with this map will not have a 'prototype' property, and
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// can not be used as constructors.
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Handle<Map> function_without_prototype_map =
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CreateSloppyFunctionMap(FUNCTION_WITHOUT_PROTOTYPE);
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native_context()->set_sloppy_function_without_prototype_map(
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*function_without_prototype_map);
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|
|
// Allocate the function map. This map is temporary, used only for processing
|
|
// of builtins.
|
|
// Later the map is replaced with writable prototype map, allocated below.
|
|
Handle<Map> function_map =
|
|
CreateSloppyFunctionMap(FUNCTION_WITH_READONLY_PROTOTYPE);
|
|
native_context()->set_sloppy_function_map(*function_map);
|
|
native_context()->set_sloppy_function_with_readonly_prototype_map(
|
|
*function_map);
|
|
|
|
// The final map for functions. Writeable prototype.
|
|
// This map is installed in MakeFunctionInstancePrototypeWritable.
|
|
sloppy_function_map_writable_prototype_ =
|
|
CreateSloppyFunctionMap(FUNCTION_WITH_WRITEABLE_PROTOTYPE);
|
|
Factory* factory = isolate->factory();
|
|
|
|
Handle<String> object_name = factory->Object_string();
|
|
|
|
Handle<JSObject> object_function_prototype;
|
|
|
|
{ // --- O b j e c t ---
|
|
Handle<JSFunction> object_fun = factory->NewFunction(object_name);
|
|
int unused = JSObject::kInitialGlobalObjectUnusedPropertiesCount;
|
|
int instance_size = JSObject::kHeaderSize + kPointerSize * unused;
|
|
Handle<Map> object_function_map =
|
|
factory->NewMap(JS_OBJECT_TYPE, instance_size);
|
|
object_function_map->set_inobject_properties(unused);
|
|
JSFunction::SetInitialMap(object_fun, object_function_map,
|
|
isolate->factory()->null_value());
|
|
object_function_map->set_unused_property_fields(unused);
|
|
|
|
native_context()->set_object_function(*object_fun);
|
|
|
|
// Allocate a new prototype for the object function.
|
|
object_function_prototype =
|
|
factory->NewJSObject(isolate->object_function(), TENURED);
|
|
Handle<Map> map = Map::Copy(handle(object_function_prototype->map()),
|
|
"EmptyObjectPrototype");
|
|
map->set_is_prototype_map(true);
|
|
object_function_prototype->set_map(*map);
|
|
|
|
native_context()->set_initial_object_prototype(*object_function_prototype);
|
|
// For bootstrapping set the array prototype to be the same as the object
|
|
// prototype, otherwise the missing initial_array_prototype will cause
|
|
// assertions during startup.
|
|
native_context()->set_initial_array_prototype(*object_function_prototype);
|
|
Accessors::FunctionSetPrototype(object_fun, object_function_prototype)
|
|
.Assert();
|
|
}
|
|
|
|
// Allocate the empty function as the prototype for function - ES6 19.2.3
|
|
Handle<Code> code(isolate->builtins()->builtin(Builtins::kEmptyFunction));
|
|
Handle<JSFunction> empty_function =
|
|
factory->NewFunctionWithoutPrototype(factory->empty_string(), code);
|
|
|
|
// Allocate the function map first and then patch the prototype later
|
|
Handle<Map> empty_function_map =
|
|
CreateSloppyFunctionMap(FUNCTION_WITHOUT_PROTOTYPE);
|
|
DCHECK(!empty_function_map->is_dictionary_map());
|
|
Map::SetPrototype(empty_function_map, object_function_prototype);
|
|
empty_function_map->set_is_prototype_map(true);
|
|
|
|
empty_function->set_map(*empty_function_map);
|
|
|
|
// --- E m p t y ---
|
|
Handle<String> source = factory->NewStringFromStaticChars("() {}");
|
|
Handle<Script> script = factory->NewScript(source);
|
|
script->set_type(Smi::FromInt(Script::TYPE_NATIVE));
|
|
empty_function->shared()->set_script(*script);
|
|
empty_function->shared()->set_start_position(0);
|
|
empty_function->shared()->set_end_position(source->length());
|
|
empty_function->shared()->DontAdaptArguments();
|
|
|
|
// Set prototypes for the function maps.
|
|
Handle<Map> sloppy_function_map(native_context()->sloppy_function_map(),
|
|
isolate);
|
|
Handle<Map> sloppy_function_without_prototype_map(
|
|
native_context()->sloppy_function_without_prototype_map(), isolate);
|
|
Map::SetPrototype(sloppy_function_map, empty_function);
|
|
Map::SetPrototype(sloppy_function_without_prototype_map, empty_function);
|
|
Map::SetPrototype(sloppy_function_map_writable_prototype_, empty_function);
|
|
|
|
// ES6 draft 03-17-2015, section 8.2.2 step 12
|
|
AddRestrictedFunctionProperties(empty_function_map);
|
|
|
|
return empty_function;
|
|
}
|
|
|
|
|
|
void Genesis::SetStrictFunctionInstanceDescriptor(Handle<Map> map,
|
|
FunctionMode function_mode) {
|
|
int size = IsFunctionModeWithPrototype(function_mode) ? 5 : 4;
|
|
Map::EnsureDescriptorSlack(map, size);
|
|
|
|
PropertyAttributes rw_attribs =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
|
|
PropertyAttributes ro_attribs =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
PropertyAttributes roc_attribs =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);
|
|
|
|
// Add length.
|
|
if (function_mode == BOUND_FUNCTION) {
|
|
Handle<String> length_string = isolate()->factory()->length_string();
|
|
DataDescriptor d(length_string, 0, ro_attribs, Representation::Tagged());
|
|
map->AppendDescriptor(&d);
|
|
} else {
|
|
DCHECK(function_mode == FUNCTION_WITH_WRITEABLE_PROTOTYPE ||
|
|
function_mode == FUNCTION_WITH_READONLY_PROTOTYPE ||
|
|
function_mode == FUNCTION_WITHOUT_PROTOTYPE);
|
|
Handle<AccessorInfo> length =
|
|
Accessors::FunctionLengthInfo(isolate(), roc_attribs);
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(length->name())),
|
|
length, roc_attribs);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
Handle<AccessorInfo> name =
|
|
Accessors::FunctionNameInfo(isolate(), roc_attribs);
|
|
{ // Add name.
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(name->name())), name,
|
|
roc_attribs);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
if (IsFunctionModeWithPrototype(function_mode)) {
|
|
// Add prototype.
|
|
PropertyAttributes attribs =
|
|
function_mode == FUNCTION_WITH_WRITEABLE_PROTOTYPE ? rw_attribs
|
|
: ro_attribs;
|
|
Handle<AccessorInfo> prototype =
|
|
Accessors::FunctionPrototypeInfo(isolate(), attribs);
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())),
|
|
prototype, attribs);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
}
|
|
|
|
|
|
void Genesis::SetStrongFunctionInstanceDescriptor(Handle<Map> map) {
|
|
Map::EnsureDescriptorSlack(map, 2);
|
|
|
|
PropertyAttributes ro_attribs =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
Handle<AccessorInfo> length =
|
|
Accessors::FunctionLengthInfo(isolate(), ro_attribs);
|
|
{ // Add length.
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(length->name())),
|
|
length, ro_attribs);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
Handle<AccessorInfo> name =
|
|
Accessors::FunctionNameInfo(isolate(), ro_attribs);
|
|
{ // Add name.
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(name->name())), name,
|
|
ro_attribs);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
}
|
|
|
|
|
|
// Creates the %ThrowTypeError% function.
|
|
Handle<JSFunction> Genesis::GetThrowTypeErrorIntrinsic(
|
|
Builtins::Name builtin_name) {
|
|
Handle<String> name =
|
|
factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("ThrowTypeError"));
|
|
Handle<Code> code(isolate()->builtins()->builtin(builtin_name));
|
|
Handle<JSFunction> function =
|
|
factory()->NewFunctionWithoutPrototype(name, code);
|
|
function->set_map(native_context()->sloppy_function_map());
|
|
function->shared()->DontAdaptArguments();
|
|
|
|
// %ThrowTypeError% must not have a name property.
|
|
JSReceiver::DeleteProperty(function, factory()->name_string()).Assert();
|
|
|
|
// length needs to be non configurable.
|
|
Handle<Object> value(Smi::FromInt(function->shared()->length()), isolate());
|
|
JSObject::SetOwnPropertyIgnoreAttributes(
|
|
function, factory()->length_string(), value,
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY))
|
|
.Assert();
|
|
|
|
JSObject::PreventExtensions(function).Assert();
|
|
|
|
return function;
|
|
}
|
|
|
|
|
|
// ECMAScript 5th Edition, 13.2.3
|
|
Handle<JSFunction> Genesis::GetRestrictedFunctionPropertiesThrower() {
|
|
if (restricted_function_properties_thrower_.is_null()) {
|
|
restricted_function_properties_thrower_ = GetThrowTypeErrorIntrinsic(
|
|
Builtins::kRestrictedFunctionPropertiesThrower);
|
|
}
|
|
return restricted_function_properties_thrower_;
|
|
}
|
|
|
|
|
|
Handle<JSFunction> Genesis::GetStrictArgumentsPoisonFunction() {
|
|
if (strict_poison_function_.is_null()) {
|
|
strict_poison_function_ = GetThrowTypeErrorIntrinsic(
|
|
Builtins::kRestrictedStrictArgumentsPropertiesThrower);
|
|
}
|
|
return strict_poison_function_;
|
|
}
|
|
|
|
|
|
Handle<Map> Genesis::CreateStrictFunctionMap(
|
|
FunctionMode function_mode, Handle<JSFunction> empty_function) {
|
|
Handle<Map> map = factory()->NewMap(JS_FUNCTION_TYPE, JSFunction::kSize);
|
|
SetStrictFunctionInstanceDescriptor(map, function_mode);
|
|
map->set_function_with_prototype(IsFunctionModeWithPrototype(function_mode));
|
|
Map::SetPrototype(map, empty_function);
|
|
return map;
|
|
}
|
|
|
|
|
|
Handle<Map> Genesis::CreateStrongFunctionMap(
|
|
Handle<JSFunction> empty_function, bool is_constructor) {
|
|
Handle<Map> map = factory()->NewMap(JS_FUNCTION_TYPE, JSFunction::kSize);
|
|
SetStrongFunctionInstanceDescriptor(map);
|
|
map->set_function_with_prototype(is_constructor);
|
|
Map::SetPrototype(map, empty_function);
|
|
map->set_is_extensible(is_constructor);
|
|
map->set_is_strong(true);
|
|
return map;
|
|
}
|
|
|
|
|
|
void Genesis::CreateStrictModeFunctionMaps(Handle<JSFunction> empty) {
|
|
// Allocate map for the prototype-less strict mode instances.
|
|
Handle<Map> strict_function_without_prototype_map =
|
|
CreateStrictFunctionMap(FUNCTION_WITHOUT_PROTOTYPE, empty);
|
|
native_context()->set_strict_function_without_prototype_map(
|
|
*strict_function_without_prototype_map);
|
|
|
|
// Allocate map for the strict mode functions. This map is temporary, used
|
|
// only for processing of builtins.
|
|
// Later the map is replaced with writable prototype map, allocated below.
|
|
Handle<Map> strict_function_map =
|
|
CreateStrictFunctionMap(FUNCTION_WITH_READONLY_PROTOTYPE, empty);
|
|
native_context()->set_strict_function_map(*strict_function_map);
|
|
|
|
// The final map for the strict mode functions. Writeable prototype.
|
|
// This map is installed in MakeFunctionInstancePrototypeWritable.
|
|
strict_function_map_writable_prototype_ =
|
|
CreateStrictFunctionMap(FUNCTION_WITH_WRITEABLE_PROTOTYPE, empty);
|
|
|
|
// Special map for bound functions.
|
|
Handle<Map> bound_function_map =
|
|
CreateStrictFunctionMap(BOUND_FUNCTION, empty);
|
|
native_context()->set_bound_function_map(*bound_function_map);
|
|
}
|
|
|
|
|
|
void Genesis::CreateStrongModeFunctionMaps(Handle<JSFunction> empty) {
|
|
// Allocate map for strong mode instances, which never have prototypes.
|
|
Handle<Map> strong_function_map = CreateStrongFunctionMap(empty, false);
|
|
native_context()->set_strong_function_map(*strong_function_map);
|
|
// Constructors do, though.
|
|
Handle<Map> strong_constructor_map = CreateStrongFunctionMap(empty, true);
|
|
native_context()->set_strong_constructor_map(*strong_constructor_map);
|
|
}
|
|
|
|
|
|
static void ReplaceAccessors(Handle<Map> map,
|
|
Handle<String> name,
|
|
PropertyAttributes attributes,
|
|
Handle<AccessorPair> accessor_pair) {
|
|
DescriptorArray* descriptors = map->instance_descriptors();
|
|
int idx = descriptors->SearchWithCache(*name, *map);
|
|
AccessorConstantDescriptor descriptor(name, accessor_pair, attributes);
|
|
descriptors->Replace(idx, &descriptor);
|
|
}
|
|
|
|
|
|
void Genesis::AddRestrictedFunctionProperties(Handle<Map> map) {
|
|
PropertyAttributes rw_attribs = static_cast<PropertyAttributes>(DONT_ENUM);
|
|
Handle<JSFunction> thrower = GetRestrictedFunctionPropertiesThrower();
|
|
Handle<AccessorPair> accessors = factory()->NewAccessorPair();
|
|
accessors->set_getter(*thrower);
|
|
accessors->set_setter(*thrower);
|
|
|
|
ReplaceAccessors(map, factory()->arguments_string(), rw_attribs, accessors);
|
|
ReplaceAccessors(map, factory()->caller_string(), rw_attribs, accessors);
|
|
}
|
|
|
|
|
|
static void AddToWeakNativeContextList(Context* context) {
|
|
DCHECK(context->IsNativeContext());
|
|
Heap* heap = context->GetIsolate()->heap();
|
|
#ifdef DEBUG
|
|
{ // NOLINT
|
|
DCHECK(context->get(Context::NEXT_CONTEXT_LINK)->IsUndefined());
|
|
// Check that context is not in the list yet.
|
|
for (Object* current = heap->native_contexts_list();
|
|
!current->IsUndefined();
|
|
current = Context::cast(current)->get(Context::NEXT_CONTEXT_LINK)) {
|
|
DCHECK(current != context);
|
|
}
|
|
}
|
|
#endif
|
|
context->set(Context::NEXT_CONTEXT_LINK, heap->native_contexts_list());
|
|
heap->set_native_contexts_list(context);
|
|
}
|
|
|
|
|
|
void Genesis::CreateRoots() {
|
|
// Allocate the native context FixedArray first and then patch the
|
|
// closure and extension object later (we need the empty function
|
|
// and the global object, but in order to create those, we need the
|
|
// native context).
|
|
native_context_ = factory()->NewNativeContext();
|
|
AddToWeakNativeContextList(*native_context());
|
|
isolate()->set_context(*native_context());
|
|
|
|
// Allocate the message listeners object.
|
|
{
|
|
v8::NeanderArray listeners(isolate());
|
|
native_context()->set_message_listeners(*listeners.value());
|
|
}
|
|
}
|
|
|
|
|
|
Handle<GlobalObject> Genesis::CreateNewGlobals(
|
|
v8::Handle<v8::ObjectTemplate> global_proxy_template,
|
|
Handle<JSGlobalProxy> global_proxy) {
|
|
// The argument global_proxy_template aka data is an ObjectTemplateInfo.
|
|
// It has a constructor pointer that points at global_constructor which is a
|
|
// FunctionTemplateInfo.
|
|
// The global_proxy_constructor is used to (re)initialize the
|
|
// global_proxy. The global_proxy_constructor also has a prototype_template
|
|
// pointer that points at js_global_object_template which is an
|
|
// ObjectTemplateInfo.
|
|
// That in turn has a constructor pointer that points at
|
|
// js_global_object_constructor which is a FunctionTemplateInfo.
|
|
// js_global_object_constructor is used to make js_global_object_function
|
|
// js_global_object_function is used to make the new global_object.
|
|
//
|
|
// --- G l o b a l ---
|
|
// Step 1: Create a fresh JSGlobalObject.
|
|
Handle<JSFunction> js_global_object_function;
|
|
Handle<ObjectTemplateInfo> js_global_object_template;
|
|
if (!global_proxy_template.IsEmpty()) {
|
|
// Get prototype template of the global_proxy_template.
|
|
Handle<ObjectTemplateInfo> data =
|
|
v8::Utils::OpenHandle(*global_proxy_template);
|
|
Handle<FunctionTemplateInfo> global_constructor =
|
|
Handle<FunctionTemplateInfo>(
|
|
FunctionTemplateInfo::cast(data->constructor()));
|
|
Handle<Object> proto_template(global_constructor->prototype_template(),
|
|
isolate());
|
|
if (!proto_template->IsUndefined()) {
|
|
js_global_object_template =
|
|
Handle<ObjectTemplateInfo>::cast(proto_template);
|
|
}
|
|
}
|
|
|
|
if (js_global_object_template.is_null()) {
|
|
Handle<String> name = Handle<String>(heap()->empty_string());
|
|
Handle<Code> code = Handle<Code>(isolate()->builtins()->builtin(
|
|
Builtins::kIllegal));
|
|
Handle<JSObject> prototype =
|
|
factory()->NewFunctionPrototype(isolate()->object_function());
|
|
js_global_object_function = factory()->NewFunction(
|
|
name, code, prototype, JS_GLOBAL_OBJECT_TYPE, JSGlobalObject::kSize);
|
|
#ifdef DEBUG
|
|
LookupIterator it(prototype, factory()->constructor_string(),
|
|
LookupIterator::OWN_SKIP_INTERCEPTOR);
|
|
Handle<Object> value = JSReceiver::GetProperty(&it).ToHandleChecked();
|
|
DCHECK(it.IsFound());
|
|
DCHECK_EQ(*isolate()->object_function(), *value);
|
|
#endif
|
|
} else {
|
|
Handle<FunctionTemplateInfo> js_global_object_constructor(
|
|
FunctionTemplateInfo::cast(js_global_object_template->constructor()));
|
|
js_global_object_function = ApiNatives::CreateApiFunction(
|
|
isolate(), js_global_object_constructor, factory()->the_hole_value(),
|
|
ApiNatives::GlobalObjectType);
|
|
}
|
|
|
|
js_global_object_function->initial_map()->set_is_prototype_map(true);
|
|
js_global_object_function->initial_map()->set_is_hidden_prototype();
|
|
js_global_object_function->initial_map()->set_dictionary_map(true);
|
|
Handle<GlobalObject> global_object =
|
|
factory()->NewGlobalObject(js_global_object_function);
|
|
|
|
// Step 2: (re)initialize the global proxy object.
|
|
Handle<JSFunction> global_proxy_function;
|
|
if (global_proxy_template.IsEmpty()) {
|
|
Handle<String> name = Handle<String>(heap()->empty_string());
|
|
Handle<Code> code = Handle<Code>(isolate()->builtins()->builtin(
|
|
Builtins::kIllegal));
|
|
global_proxy_function = factory()->NewFunction(
|
|
name, code, JS_GLOBAL_PROXY_TYPE, JSGlobalProxy::kSize);
|
|
} else {
|
|
Handle<ObjectTemplateInfo> data =
|
|
v8::Utils::OpenHandle(*global_proxy_template);
|
|
Handle<FunctionTemplateInfo> global_constructor(
|
|
FunctionTemplateInfo::cast(data->constructor()));
|
|
global_proxy_function = ApiNatives::CreateApiFunction(
|
|
isolate(), global_constructor, factory()->the_hole_value(),
|
|
ApiNatives::GlobalProxyType);
|
|
}
|
|
|
|
Handle<String> global_name = factory()->global_string();
|
|
global_proxy_function->shared()->set_instance_class_name(*global_name);
|
|
global_proxy_function->initial_map()->set_is_access_check_needed(true);
|
|
|
|
// Set global_proxy.__proto__ to js_global after ConfigureGlobalObjects
|
|
// Return the global proxy.
|
|
|
|
factory()->ReinitializeJSGlobalProxy(global_proxy, global_proxy_function);
|
|
return global_object;
|
|
}
|
|
|
|
|
|
void Genesis::HookUpGlobalProxy(Handle<GlobalObject> global_object,
|
|
Handle<JSGlobalProxy> global_proxy) {
|
|
// Set the native context for the global object.
|
|
global_object->set_native_context(*native_context());
|
|
global_object->set_global_proxy(*global_proxy);
|
|
global_proxy->set_native_context(*native_context());
|
|
// If we deserialized the context, the global proxy is already
|
|
// correctly set up. Otherwise it's undefined.
|
|
DCHECK(native_context()->get(Context::GLOBAL_PROXY_INDEX)->IsUndefined() ||
|
|
native_context()->global_proxy() == *global_proxy);
|
|
native_context()->set_global_proxy(*global_proxy);
|
|
}
|
|
|
|
|
|
void Genesis::HookUpGlobalObject(Handle<GlobalObject> global_object,
|
|
Handle<FixedArray> outdated_contexts) {
|
|
Handle<GlobalObject> global_object_from_snapshot(
|
|
GlobalObject::cast(native_context()->extension()));
|
|
Handle<JSBuiltinsObject> builtins_global(native_context()->builtins());
|
|
native_context()->set_extension(*global_object);
|
|
native_context()->set_security_token(*global_object);
|
|
|
|
// Replace outdated global objects in deserialized contexts.
|
|
for (int i = 0; i < outdated_contexts->length(); ++i) {
|
|
Context* context = Context::cast(outdated_contexts->get(i));
|
|
// Assert that there is only one native context.
|
|
DCHECK(!context->IsNativeContext() || context == *native_context());
|
|
DCHECK_EQ(context->global_object(), *global_object_from_snapshot);
|
|
context->set_global_object(*global_object);
|
|
}
|
|
|
|
static const PropertyAttributes attributes =
|
|
static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE);
|
|
Runtime::DefineObjectProperty(builtins_global, factory()->global_string(),
|
|
global_object, attributes).Assert();
|
|
// Set up the reference from the global object to the builtins object.
|
|
JSGlobalObject::cast(*global_object)->set_builtins(*builtins_global);
|
|
TransferNamedProperties(global_object_from_snapshot, global_object);
|
|
TransferIndexedProperties(global_object_from_snapshot, global_object);
|
|
}
|
|
|
|
|
|
// This is only called if we are not using snapshots. The equivalent
|
|
// work in the snapshot case is done in HookUpGlobalObject.
|
|
void Genesis::InitializeGlobal(Handle<GlobalObject> global_object,
|
|
Handle<JSFunction> empty_function) {
|
|
// --- N a t i v e C o n t e x t ---
|
|
// Use the empty function as closure (no scope info).
|
|
native_context()->set_closure(*empty_function);
|
|
native_context()->set_previous(NULL);
|
|
// Set extension and global object.
|
|
native_context()->set_extension(*global_object);
|
|
native_context()->set_global_object(*global_object);
|
|
// Security setup: Set the security token of the native context to the global
|
|
// object. This makes the security check between two different contexts fail
|
|
// by default even in case of global object reinitialization.
|
|
native_context()->set_security_token(*global_object);
|
|
|
|
Isolate* isolate = global_object->GetIsolate();
|
|
Factory* factory = isolate->factory();
|
|
Heap* heap = isolate->heap();
|
|
|
|
Handle<ScriptContextTable> script_context_table =
|
|
factory->NewScriptContextTable();
|
|
native_context()->set_script_context_table(*script_context_table);
|
|
|
|
Handle<String> object_name = factory->Object_string();
|
|
JSObject::AddProperty(
|
|
global_object, object_name, isolate->object_function(), DONT_ENUM);
|
|
|
|
Handle<JSObject> global(native_context()->global_object());
|
|
|
|
// Install global Function object
|
|
InstallFunction(global, "Function", JS_FUNCTION_TYPE, JSFunction::kSize,
|
|
empty_function, Builtins::kIllegal);
|
|
|
|
{ // --- A r r a y ---
|
|
Handle<JSFunction> array_function =
|
|
InstallFunction(global, "Array", JS_ARRAY_TYPE, JSArray::kSize,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kArrayCode);
|
|
array_function->shared()->DontAdaptArguments();
|
|
array_function->shared()->set_function_data(Smi::FromInt(kArrayCode));
|
|
|
|
// This seems a bit hackish, but we need to make sure Array.length
|
|
// is 1.
|
|
array_function->shared()->set_length(1);
|
|
|
|
Handle<Map> initial_map(array_function->initial_map());
|
|
|
|
// This assert protects an optimization in
|
|
// HGraphBuilder::JSArrayBuilder::EmitMapCode()
|
|
DCHECK(initial_map->elements_kind() == GetInitialFastElementsKind());
|
|
Map::EnsureDescriptorSlack(initial_map, 1);
|
|
|
|
PropertyAttributes attribs = static_cast<PropertyAttributes>(
|
|
DONT_ENUM | DONT_DELETE);
|
|
|
|
Handle<AccessorInfo> array_length =
|
|
Accessors::ArrayLengthInfo(isolate, attribs);
|
|
{ // Add length.
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(array_length->name())), array_length,
|
|
attribs);
|
|
initial_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
// array_function is used internally. JS code creating array object should
|
|
// search for the 'Array' property on the global object and use that one
|
|
// as the constructor. 'Array' property on a global object can be
|
|
// overwritten by JS code.
|
|
native_context()->set_array_function(*array_function);
|
|
|
|
// Cache the array maps, needed by ArrayConstructorStub
|
|
CacheInitialJSArrayMaps(native_context(), initial_map);
|
|
ArrayConstructorStub array_constructor_stub(isolate);
|
|
Handle<Code> code = array_constructor_stub.GetCode();
|
|
array_function->shared()->set_construct_stub(*code);
|
|
}
|
|
|
|
{ // --- N u m b e r ---
|
|
Handle<JSFunction> number_fun =
|
|
InstallFunction(global, "Number", JS_VALUE_TYPE, JSValue::kSize,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
native_context()->set_number_function(*number_fun);
|
|
}
|
|
|
|
{ // --- B o o l e a n ---
|
|
Handle<JSFunction> boolean_fun =
|
|
InstallFunction(global, "Boolean", JS_VALUE_TYPE, JSValue::kSize,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
native_context()->set_boolean_function(*boolean_fun);
|
|
}
|
|
|
|
{ // --- S t r i n g ---
|
|
Handle<JSFunction> string_fun =
|
|
InstallFunction(global, "String", JS_VALUE_TYPE, JSValue::kSize,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
string_fun->shared()->set_construct_stub(
|
|
isolate->builtins()->builtin(Builtins::kStringConstructCode));
|
|
native_context()->set_string_function(*string_fun);
|
|
|
|
Handle<Map> string_map =
|
|
Handle<Map>(native_context()->string_function()->initial_map());
|
|
Map::EnsureDescriptorSlack(string_map, 1);
|
|
|
|
PropertyAttributes attribs = static_cast<PropertyAttributes>(
|
|
DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
Handle<AccessorInfo> string_length(
|
|
Accessors::StringLengthInfo(isolate, attribs));
|
|
|
|
{ // Add length.
|
|
AccessorConstantDescriptor d(factory->length_string(), string_length,
|
|
attribs);
|
|
string_map->AppendDescriptor(&d);
|
|
}
|
|
}
|
|
|
|
{
|
|
// --- S y m b o l ---
|
|
Handle<JSFunction> symbol_fun = InstallFunction(
|
|
global, "Symbol", JS_VALUE_TYPE, JSValue::kSize,
|
|
isolate->initial_object_prototype(), Builtins::kIllegal);
|
|
native_context()->set_symbol_function(*symbol_fun);
|
|
}
|
|
|
|
{ // --- D a t e ---
|
|
// Builtin functions for Date.prototype.
|
|
Handle<JSFunction> date_fun =
|
|
InstallFunction(global, "Date", JS_DATE_TYPE, JSDate::kSize,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
|
|
native_context()->set_date_function(*date_fun);
|
|
}
|
|
|
|
|
|
{ // -- R e g E x p
|
|
// Builtin functions for RegExp.prototype.
|
|
Handle<JSFunction> regexp_fun =
|
|
InstallFunction(global, "RegExp", JS_REGEXP_TYPE, JSRegExp::kSize,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
native_context()->set_regexp_function(*regexp_fun);
|
|
|
|
DCHECK(regexp_fun->has_initial_map());
|
|
Handle<Map> initial_map(regexp_fun->initial_map());
|
|
|
|
DCHECK_EQ(0, initial_map->inobject_properties());
|
|
|
|
PropertyAttributes final =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
Map::EnsureDescriptorSlack(initial_map, 5);
|
|
|
|
{
|
|
// ECMA-262, section 15.10.7.1.
|
|
DataDescriptor field(factory->source_string(),
|
|
JSRegExp::kSourceFieldIndex, final,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&field);
|
|
}
|
|
{
|
|
// ECMA-262, section 15.10.7.2.
|
|
DataDescriptor field(factory->global_string(),
|
|
JSRegExp::kGlobalFieldIndex, final,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&field);
|
|
}
|
|
{
|
|
// ECMA-262, section 15.10.7.3.
|
|
DataDescriptor field(factory->ignore_case_string(),
|
|
JSRegExp::kIgnoreCaseFieldIndex, final,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&field);
|
|
}
|
|
{
|
|
// ECMA-262, section 15.10.7.4.
|
|
DataDescriptor field(factory->multiline_string(),
|
|
JSRegExp::kMultilineFieldIndex, final,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&field);
|
|
}
|
|
{
|
|
// ECMA-262, section 15.10.7.5.
|
|
PropertyAttributes writable =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
|
|
DataDescriptor field(factory->last_index_string(),
|
|
JSRegExp::kLastIndexFieldIndex, writable,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&field);
|
|
}
|
|
|
|
static const int num_fields = JSRegExp::kInObjectFieldCount;
|
|
initial_map->set_inobject_properties(num_fields);
|
|
initial_map->set_pre_allocated_property_fields(num_fields);
|
|
initial_map->set_unused_property_fields(0);
|
|
initial_map->set_instance_size(initial_map->instance_size() +
|
|
num_fields * kPointerSize);
|
|
|
|
// RegExp prototype object is itself a RegExp.
|
|
Handle<Map> proto_map = Map::Copy(initial_map, "RegExpPrototype");
|
|
DCHECK(proto_map->prototype() == *isolate->initial_object_prototype());
|
|
Handle<JSObject> proto = factory->NewJSObjectFromMap(proto_map);
|
|
proto->InObjectPropertyAtPut(JSRegExp::kSourceFieldIndex,
|
|
heap->query_colon_string());
|
|
proto->InObjectPropertyAtPut(JSRegExp::kGlobalFieldIndex,
|
|
heap->false_value());
|
|
proto->InObjectPropertyAtPut(JSRegExp::kIgnoreCaseFieldIndex,
|
|
heap->false_value());
|
|
proto->InObjectPropertyAtPut(JSRegExp::kMultilineFieldIndex,
|
|
heap->false_value());
|
|
proto->InObjectPropertyAtPut(JSRegExp::kLastIndexFieldIndex,
|
|
Smi::FromInt(0),
|
|
SKIP_WRITE_BARRIER); // It's a Smi.
|
|
proto_map->set_is_prototype_map(true);
|
|
Map::SetPrototype(initial_map, proto);
|
|
factory->SetRegExpIrregexpData(Handle<JSRegExp>::cast(proto),
|
|
JSRegExp::IRREGEXP, factory->empty_string(),
|
|
JSRegExp::Flags(0), 0);
|
|
}
|
|
|
|
{ // -- J S O N
|
|
Handle<String> name = factory->InternalizeUtf8String("JSON");
|
|
Handle<JSFunction> cons = factory->NewFunction(name);
|
|
JSFunction::SetInstancePrototype(cons,
|
|
Handle<Object>(native_context()->initial_object_prototype(), isolate));
|
|
cons->SetInstanceClassName(*name);
|
|
Handle<JSObject> json_object = factory->NewJSObject(cons, TENURED);
|
|
DCHECK(json_object->IsJSObject());
|
|
JSObject::AddProperty(global, name, json_object, DONT_ENUM);
|
|
native_context()->set_json_object(*json_object);
|
|
}
|
|
|
|
{ // -- A r r a y B u f f e r
|
|
Handle<JSFunction> array_buffer_fun =
|
|
InstallFunction(
|
|
global, "ArrayBuffer", JS_ARRAY_BUFFER_TYPE,
|
|
JSArrayBuffer::kSizeWithInternalFields,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
native_context()->set_array_buffer_fun(*array_buffer_fun);
|
|
native_context()->set_array_buffer_map(array_buffer_fun->initial_map());
|
|
}
|
|
|
|
{ // -- T y p e d A r r a y s
|
|
#define INSTALL_TYPED_ARRAY(Type, type, TYPE, ctype, size) \
|
|
{ \
|
|
Handle<JSFunction> fun; \
|
|
Handle<Map> external_map; \
|
|
InstallTypedArray(#Type "Array", \
|
|
TYPE##_ELEMENTS, \
|
|
&fun, \
|
|
&external_map); \
|
|
native_context()->set_##type##_array_fun(*fun); \
|
|
native_context()->set_##type##_array_external_map(*external_map); \
|
|
}
|
|
TYPED_ARRAYS(INSTALL_TYPED_ARRAY)
|
|
#undef INSTALL_TYPED_ARRAY
|
|
|
|
Handle<JSFunction> data_view_fun =
|
|
InstallFunction(
|
|
global, "DataView", JS_DATA_VIEW_TYPE,
|
|
JSDataView::kSizeWithInternalFields,
|
|
isolate->initial_object_prototype(),
|
|
Builtins::kIllegal);
|
|
native_context()->set_data_view_fun(*data_view_fun);
|
|
}
|
|
|
|
// -- M a p
|
|
InstallFunction(global, "Map", JS_MAP_TYPE, JSMap::kSize,
|
|
isolate->initial_object_prototype(), Builtins::kIllegal);
|
|
|
|
// -- S e t
|
|
InstallFunction(global, "Set", JS_SET_TYPE, JSSet::kSize,
|
|
isolate->initial_object_prototype(), Builtins::kIllegal);
|
|
|
|
{ // Set up the iterator result object
|
|
STATIC_ASSERT(JSGeneratorObject::kResultPropertyCount == 2);
|
|
Handle<JSFunction> object_function(native_context()->object_function());
|
|
Handle<Map> iterator_result_map =
|
|
Map::Create(isolate, JSGeneratorObject::kResultPropertyCount);
|
|
DCHECK_EQ(JSGeneratorObject::kResultSize,
|
|
iterator_result_map->instance_size());
|
|
DCHECK_EQ(JSGeneratorObject::kResultPropertyCount,
|
|
iterator_result_map->inobject_properties());
|
|
Map::EnsureDescriptorSlack(iterator_result_map,
|
|
JSGeneratorObject::kResultPropertyCount);
|
|
|
|
DataDescriptor value_descr(factory->value_string(),
|
|
JSGeneratorObject::kResultValuePropertyIndex,
|
|
NONE, Representation::Tagged());
|
|
iterator_result_map->AppendDescriptor(&value_descr);
|
|
|
|
DataDescriptor done_descr(factory->done_string(),
|
|
JSGeneratorObject::kResultDonePropertyIndex, NONE,
|
|
Representation::Tagged());
|
|
iterator_result_map->AppendDescriptor(&done_descr);
|
|
|
|
iterator_result_map->set_unused_property_fields(0);
|
|
iterator_result_map->set_pre_allocated_property_fields(
|
|
JSGeneratorObject::kResultPropertyCount);
|
|
DCHECK_EQ(JSGeneratorObject::kResultSize,
|
|
iterator_result_map->instance_size());
|
|
native_context()->set_iterator_result_map(*iterator_result_map);
|
|
}
|
|
|
|
// -- W e a k M a p
|
|
InstallFunction(global, "WeakMap", JS_WEAK_MAP_TYPE, JSWeakMap::kSize,
|
|
isolate->initial_object_prototype(), Builtins::kIllegal);
|
|
// -- W e a k S e t
|
|
InstallFunction(global, "WeakSet", JS_WEAK_SET_TYPE, JSWeakSet::kSize,
|
|
isolate->initial_object_prototype(), Builtins::kIllegal);
|
|
|
|
{ // --- sloppy arguments map
|
|
// Make sure we can recognize argument objects at runtime.
|
|
// This is done by introducing an anonymous function with
|
|
// class_name equals 'Arguments'.
|
|
Handle<String> arguments_string = factory->Arguments_string();
|
|
Handle<Code> code(isolate->builtins()->builtin(Builtins::kIllegal));
|
|
Handle<JSFunction> function = factory->NewFunctionWithoutPrototype(
|
|
arguments_string, code);
|
|
function->shared()->set_instance_class_name(*arguments_string);
|
|
|
|
Handle<Map> map =
|
|
factory->NewMap(JS_OBJECT_TYPE, Heap::kSloppyArgumentsObjectSize);
|
|
// Create the descriptor array for the arguments object.
|
|
Map::EnsureDescriptorSlack(map, 2);
|
|
|
|
{ // length
|
|
DataDescriptor d(factory->length_string(), Heap::kArgumentsLengthIndex,
|
|
DONT_ENUM, Representation::Tagged());
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
{ // callee
|
|
DataDescriptor d(factory->callee_string(), Heap::kArgumentsCalleeIndex,
|
|
DONT_ENUM, Representation::Tagged());
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
// @@iterator method is added later.
|
|
|
|
map->set_function_with_prototype(true);
|
|
map->set_pre_allocated_property_fields(2);
|
|
map->set_inobject_properties(2);
|
|
native_context()->set_sloppy_arguments_map(*map);
|
|
|
|
DCHECK(!function->has_initial_map());
|
|
JSFunction::SetInitialMap(function, map,
|
|
isolate->initial_object_prototype());
|
|
|
|
DCHECK(map->inobject_properties() > Heap::kArgumentsCalleeIndex);
|
|
DCHECK(map->inobject_properties() > Heap::kArgumentsLengthIndex);
|
|
DCHECK(!map->is_dictionary_map());
|
|
DCHECK(IsFastObjectElementsKind(map->elements_kind()));
|
|
}
|
|
|
|
{ // --- aliased arguments map
|
|
Handle<Map> map =
|
|
Map::Copy(isolate->sloppy_arguments_map(), "AliasedArguments");
|
|
map->set_elements_kind(SLOPPY_ARGUMENTS_ELEMENTS);
|
|
DCHECK_EQ(2, map->pre_allocated_property_fields());
|
|
native_context()->set_aliased_arguments_map(*map);
|
|
}
|
|
|
|
{ // --- strict mode arguments map
|
|
const PropertyAttributes attributes =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
// Create the ThrowTypeError functions.
|
|
Handle<AccessorPair> callee = factory->NewAccessorPair();
|
|
Handle<AccessorPair> caller = factory->NewAccessorPair();
|
|
|
|
Handle<JSFunction> poison = GetStrictArgumentsPoisonFunction();
|
|
|
|
// Install the ThrowTypeError functions.
|
|
callee->set_getter(*poison);
|
|
callee->set_setter(*poison);
|
|
caller->set_getter(*poison);
|
|
caller->set_setter(*poison);
|
|
|
|
// Create the map. Allocate one in-object field for length.
|
|
Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE,
|
|
Heap::kStrictArgumentsObjectSize);
|
|
// Create the descriptor array for the arguments object.
|
|
Map::EnsureDescriptorSlack(map, 3);
|
|
|
|
{ // length
|
|
DataDescriptor d(factory->length_string(), Heap::kArgumentsLengthIndex,
|
|
DONT_ENUM, Representation::Tagged());
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
{ // callee
|
|
AccessorConstantDescriptor d(factory->callee_string(), callee,
|
|
attributes);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
{ // caller
|
|
AccessorConstantDescriptor d(factory->caller_string(), caller,
|
|
attributes);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
// @@iterator method is added later.
|
|
|
|
map->set_function_with_prototype(true);
|
|
DCHECK_EQ(native_context()->object_function()->prototype(),
|
|
*isolate->initial_object_prototype());
|
|
Map::SetPrototype(map, isolate->initial_object_prototype());
|
|
map->set_pre_allocated_property_fields(1);
|
|
map->set_inobject_properties(1);
|
|
|
|
// Copy constructor from the sloppy arguments boilerplate.
|
|
map->SetConstructor(
|
|
native_context()->sloppy_arguments_map()->GetConstructor());
|
|
|
|
native_context()->set_strict_arguments_map(*map);
|
|
|
|
DCHECK(map->inobject_properties() > Heap::kArgumentsLengthIndex);
|
|
DCHECK(!map->is_dictionary_map());
|
|
DCHECK(IsFastObjectElementsKind(map->elements_kind()));
|
|
}
|
|
|
|
{ // --- context extension
|
|
// Create a function for the context extension objects.
|
|
Handle<Code> code = Handle<Code>(
|
|
isolate->builtins()->builtin(Builtins::kIllegal));
|
|
Handle<JSFunction> context_extension_fun = factory->NewFunction(
|
|
factory->empty_string(), code, JS_CONTEXT_EXTENSION_OBJECT_TYPE,
|
|
JSObject::kHeaderSize);
|
|
|
|
Handle<String> name = factory->InternalizeOneByteString(
|
|
STATIC_CHAR_VECTOR("context_extension"));
|
|
context_extension_fun->shared()->set_instance_class_name(*name);
|
|
native_context()->set_context_extension_function(*context_extension_fun);
|
|
}
|
|
|
|
|
|
{
|
|
// Set up the call-as-function delegate.
|
|
Handle<Code> code =
|
|
Handle<Code>(isolate->builtins()->builtin(
|
|
Builtins::kHandleApiCallAsFunction));
|
|
Handle<JSFunction> delegate = factory->NewFunction(
|
|
factory->empty_string(), code, JS_OBJECT_TYPE, JSObject::kHeaderSize);
|
|
native_context()->set_call_as_function_delegate(*delegate);
|
|
delegate->shared()->DontAdaptArguments();
|
|
}
|
|
|
|
{
|
|
// Set up the call-as-constructor delegate.
|
|
Handle<Code> code =
|
|
Handle<Code>(isolate->builtins()->builtin(
|
|
Builtins::kHandleApiCallAsConstructor));
|
|
Handle<JSFunction> delegate = factory->NewFunction(
|
|
factory->empty_string(), code, JS_OBJECT_TYPE, JSObject::kHeaderSize);
|
|
native_context()->set_call_as_constructor_delegate(*delegate);
|
|
delegate->shared()->DontAdaptArguments();
|
|
}
|
|
|
|
// Initialize the embedder data slot.
|
|
Handle<FixedArray> embedder_data = factory->NewFixedArray(3);
|
|
native_context()->set_embedder_data(*embedder_data);
|
|
}
|
|
|
|
|
|
void Genesis::InstallTypedArray(
|
|
const char* name,
|
|
ElementsKind elements_kind,
|
|
Handle<JSFunction>* fun,
|
|
Handle<Map>* external_map) {
|
|
Handle<JSObject> global = Handle<JSObject>(native_context()->global_object());
|
|
Handle<JSFunction> result = InstallFunction(
|
|
global, name, JS_TYPED_ARRAY_TYPE, JSTypedArray::kSize,
|
|
isolate()->initial_object_prototype(), Builtins::kIllegal);
|
|
|
|
Handle<Map> initial_map = isolate()->factory()->NewMap(
|
|
JS_TYPED_ARRAY_TYPE,
|
|
JSTypedArray::kSizeWithInternalFields,
|
|
elements_kind);
|
|
JSFunction::SetInitialMap(result, initial_map,
|
|
handle(initial_map->prototype(), isolate()));
|
|
*fun = result;
|
|
|
|
ElementsKind external_kind = GetNextTransitionElementsKind(elements_kind);
|
|
*external_map = Map::AsElementsKind(initial_map, external_kind);
|
|
}
|
|
|
|
|
|
void Genesis::InitializeExperimentalGlobal() {
|
|
#define FEATURE_INITIALIZE_GLOBAL(id, descr) InitializeGlobal_##id();
|
|
|
|
HARMONY_INPROGRESS(FEATURE_INITIALIZE_GLOBAL)
|
|
HARMONY_STAGED(FEATURE_INITIALIZE_GLOBAL)
|
|
HARMONY_SHIPPING(FEATURE_INITIALIZE_GLOBAL)
|
|
#undef FEATURE_INITIALIZE_GLOBAL
|
|
}
|
|
|
|
|
|
bool Genesis::CompileBuiltin(Isolate* isolate, int index,
|
|
Handle<JSObject> shared) {
|
|
Vector<const char> name = Natives::GetScriptName(index);
|
|
Handle<String> source_code =
|
|
isolate->bootstrapper()->SourceLookup<Natives>(index);
|
|
Handle<Object> global = isolate->global_object();
|
|
Handle<Object> exports = isolate->builtin_exports_object();
|
|
Handle<Object> args[] = {global, shared, exports};
|
|
return CompileNative(isolate, name, source_code, arraysize(args), args);
|
|
}
|
|
|
|
|
|
bool Genesis::CompileExperimentalBuiltin(Isolate* isolate, int index) {
|
|
HandleScope scope(isolate);
|
|
Vector<const char> name = ExperimentalNatives::GetScriptName(index);
|
|
Handle<String> source_code =
|
|
isolate->bootstrapper()->SourceLookup<ExperimentalNatives>(index);
|
|
Handle<Object> global = isolate->global_object();
|
|
Handle<Object> exports = isolate->builtin_exports_object();
|
|
Handle<Object> args[] = {global, exports};
|
|
return CompileNative(isolate, name, source_code, arraysize(args), args);
|
|
}
|
|
|
|
|
|
bool Genesis::CompileExtraBuiltin(Isolate* isolate, int index) {
|
|
HandleScope scope(isolate);
|
|
Vector<const char> name = ExtraNatives::GetScriptName(index);
|
|
Handle<String> source_code =
|
|
isolate->bootstrapper()->SourceLookup<ExtraNatives>(index);
|
|
Handle<Object> global = isolate->global_object();
|
|
Handle<Object> exports = isolate->builtin_exports_object();
|
|
Handle<Object> args[] = {global, exports};
|
|
return CompileNative(isolate, name, source_code, arraysize(args), args);
|
|
}
|
|
|
|
|
|
bool Genesis::CompileNative(Isolate* isolate, Vector<const char> name,
|
|
Handle<String> source, int argc,
|
|
Handle<Object> argv[]) {
|
|
SuppressDebug compiling_natives(isolate->debug());
|
|
// During genesis, the boilerplate for stack overflow won't work until the
|
|
// environment has been at least partially initialized. Add a stack check
|
|
// before entering JS code to catch overflow early.
|
|
StackLimitCheck check(isolate);
|
|
if (check.HasOverflowed()) return false;
|
|
|
|
Handle<Context> context(isolate->context());
|
|
|
|
Handle<String> script_name =
|
|
isolate->factory()->NewStringFromUtf8(name).ToHandleChecked();
|
|
Handle<SharedFunctionInfo> function_info = Compiler::CompileScript(
|
|
source, script_name, 0, 0, false, false, Handle<Object>(), context, NULL,
|
|
NULL, ScriptCompiler::kNoCompileOptions, NATIVES_CODE, false);
|
|
|
|
DCHECK(context->IsNativeContext());
|
|
|
|
Handle<Context> runtime_context(context->runtime_context());
|
|
Handle<JSBuiltinsObject> receiver(context->builtins());
|
|
Handle<JSFunction> fun =
|
|
isolate->factory()->NewFunctionFromSharedFunctionInfo(function_info,
|
|
runtime_context);
|
|
|
|
// For non-extension scripts, run script to get the function wrapper.
|
|
Handle<Object> wrapper;
|
|
if (!Execution::Call(isolate, fun, receiver, 0, NULL).ToHandle(&wrapper)) {
|
|
return false;
|
|
}
|
|
// Then run the function wrapper.
|
|
return !Execution::Call(isolate, Handle<JSFunction>::cast(wrapper), receiver,
|
|
argc, argv).is_null();
|
|
}
|
|
|
|
|
|
bool Genesis::CompileExtension(Isolate* isolate, v8::Extension* extension) {
|
|
Factory* factory = isolate->factory();
|
|
HandleScope scope(isolate);
|
|
Handle<SharedFunctionInfo> function_info;
|
|
|
|
Handle<String> source =
|
|
isolate->factory()
|
|
->NewExternalStringFromOneByte(extension->source())
|
|
.ToHandleChecked();
|
|
DCHECK(source->IsOneByteRepresentation());
|
|
|
|
// If we can't find the function in the cache, we compile a new
|
|
// function and insert it into the cache.
|
|
Vector<const char> name = CStrVector(extension->name());
|
|
SourceCodeCache* cache = isolate->bootstrapper()->extensions_cache();
|
|
Handle<Context> context(isolate->context());
|
|
DCHECK(context->IsNativeContext());
|
|
|
|
if (!cache->Lookup(name, &function_info)) {
|
|
Handle<String> script_name =
|
|
factory->NewStringFromUtf8(name).ToHandleChecked();
|
|
function_info = Compiler::CompileScript(
|
|
source, script_name, 0, 0, false, false, Handle<Object>(), context,
|
|
extension, NULL, ScriptCompiler::kNoCompileOptions, NOT_NATIVES_CODE,
|
|
false);
|
|
if (function_info.is_null()) return false;
|
|
cache->Add(name, function_info);
|
|
}
|
|
|
|
// Set up the function context. Conceptually, we should clone the
|
|
// function before overwriting the context but since we're in a
|
|
// single-threaded environment it is not strictly necessary.
|
|
Handle<JSFunction> fun =
|
|
factory->NewFunctionFromSharedFunctionInfo(function_info, context);
|
|
|
|
// Call function using either the runtime object or the global
|
|
// object as the receiver. Provide no parameters.
|
|
Handle<Object> receiver = isolate->global_object();
|
|
return !Execution::Call(isolate, fun, receiver, 0, NULL).is_null();
|
|
}
|
|
|
|
|
|
static Handle<JSObject> ResolveBuiltinIdHolder(Handle<Context> native_context,
|
|
const char* holder_expr) {
|
|
Isolate* isolate = native_context->GetIsolate();
|
|
Factory* factory = isolate->factory();
|
|
Handle<GlobalObject> global(native_context->global_object());
|
|
const char* period_pos = strchr(holder_expr, '.');
|
|
if (period_pos == NULL) {
|
|
return Handle<JSObject>::cast(
|
|
Object::GetPropertyOrElement(
|
|
global, factory->InternalizeUtf8String(holder_expr))
|
|
.ToHandleChecked());
|
|
}
|
|
const char* inner = period_pos + 1;
|
|
DCHECK(!strchr(inner, '.'));
|
|
Vector<const char> property(holder_expr,
|
|
static_cast<int>(period_pos - holder_expr));
|
|
Handle<String> property_string = factory->InternalizeUtf8String(property);
|
|
DCHECK(!property_string.is_null());
|
|
Handle<JSObject> object = Handle<JSObject>::cast(
|
|
Object::GetProperty(global, property_string).ToHandleChecked());
|
|
if (strcmp("prototype", inner) == 0) {
|
|
Handle<JSFunction> function = Handle<JSFunction>::cast(object);
|
|
return Handle<JSObject>(JSObject::cast(function->prototype()));
|
|
}
|
|
Handle<String> inner_string = factory->InternalizeUtf8String(inner);
|
|
DCHECK(!inner_string.is_null());
|
|
Handle<Object> value =
|
|
Object::GetProperty(object, inner_string).ToHandleChecked();
|
|
return Handle<JSObject>::cast(value);
|
|
}
|
|
|
|
|
|
#define INSTALL_NATIVE(Type, name, var) \
|
|
Handle<String> var##_name = \
|
|
factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR(name)); \
|
|
Handle<Object> var##_native = \
|
|
Object::GetProperty(handle(native_context()->builtins()), var##_name) \
|
|
.ToHandleChecked(); \
|
|
native_context()->set_##var(Type::cast(*var##_native));
|
|
|
|
|
|
void Genesis::InstallNativeFunctions() {
|
|
HandleScope scope(isolate());
|
|
INSTALL_NATIVE(JSFunction, "$createDate", create_date_fun);
|
|
|
|
INSTALL_NATIVE(JSFunction, "$toNumber", to_number_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toString", to_string_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toDetailString", to_detail_string_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toObject", to_object_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toInteger", to_integer_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toUint32", to_uint32_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toInt32", to_int32_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toLength", to_length_fun);
|
|
|
|
INSTALL_NATIVE(JSFunction, "$globalEval", global_eval_fun);
|
|
INSTALL_NATIVE(JSFunction, "$getStackTraceLine", get_stack_trace_line_fun);
|
|
INSTALL_NATIVE(JSFunction, "$toCompletePropertyDescriptor",
|
|
to_complete_property_descriptor);
|
|
|
|
INSTALL_NATIVE(Symbol, "$promiseStatus", promise_status);
|
|
INSTALL_NATIVE(Symbol, "$promiseValue", promise_value);
|
|
INSTALL_NATIVE(JSFunction, "$promiseCreate", promise_create);
|
|
INSTALL_NATIVE(JSFunction, "$promiseResolve", promise_resolve);
|
|
INSTALL_NATIVE(JSFunction, "$promiseReject", promise_reject);
|
|
INSTALL_NATIVE(JSFunction, "$promiseChain", promise_chain);
|
|
INSTALL_NATIVE(JSFunction, "$promiseCatch", promise_catch);
|
|
INSTALL_NATIVE(JSFunction, "$promiseThen", promise_then);
|
|
|
|
INSTALL_NATIVE(JSFunction, "$observeNotifyChange", observers_notify_change);
|
|
INSTALL_NATIVE(JSFunction, "$observeEnqueueSpliceRecord",
|
|
observers_enqueue_splice);
|
|
INSTALL_NATIVE(JSFunction, "$observeBeginPerformSplice",
|
|
observers_begin_perform_splice);
|
|
INSTALL_NATIVE(JSFunction, "$observeEndPerformSplice",
|
|
observers_end_perform_splice);
|
|
INSTALL_NATIVE(JSFunction, "$observeNativeObjectObserve",
|
|
native_object_observe);
|
|
INSTALL_NATIVE(JSFunction, "$observeNativeObjectGetNotifier",
|
|
native_object_get_notifier);
|
|
INSTALL_NATIVE(JSFunction, "$observeNativeObjectNotifierPerformChange",
|
|
native_object_notifier_perform_change);
|
|
INSTALL_NATIVE(JSFunction, "$arrayValues", array_values_iterator);
|
|
}
|
|
|
|
|
|
void Genesis::InstallExperimentalNativeFunctions() {
|
|
if (FLAG_harmony_proxies) {
|
|
INSTALL_NATIVE(JSFunction, "$proxyDerivedHasTrap", derived_has_trap);
|
|
INSTALL_NATIVE(JSFunction, "$proxyDerivedGetTrap", derived_get_trap);
|
|
INSTALL_NATIVE(JSFunction, "$proxyDerivedSetTrap", derived_set_trap);
|
|
INSTALL_NATIVE(JSFunction, "$proxyEnumerate", proxy_enumerate);
|
|
}
|
|
|
|
#define INSTALL_NATIVE_FUNCTIONS_FOR(id, descr) InstallNativeFunctions_##id();
|
|
HARMONY_INPROGRESS(INSTALL_NATIVE_FUNCTIONS_FOR)
|
|
HARMONY_STAGED(INSTALL_NATIVE_FUNCTIONS_FOR)
|
|
HARMONY_SHIPPING(INSTALL_NATIVE_FUNCTIONS_FOR)
|
|
#undef INSTALL_NATIVE_FUNCTIONS_FOR
|
|
}
|
|
|
|
|
|
template <typename Data>
|
|
Data* SetBuiltinTypedArray(Isolate* isolate, Handle<JSBuiltinsObject> builtins,
|
|
ExternalArrayType type, Data* data,
|
|
size_t num_elements, const char* name) {
|
|
size_t byte_length = num_elements * sizeof(*data);
|
|
Handle<JSArrayBuffer> buffer = isolate->factory()->NewJSArrayBuffer();
|
|
bool is_external = data != nullptr;
|
|
if (!is_external) {
|
|
data = reinterpret_cast<Data*>(
|
|
isolate->array_buffer_allocator()->Allocate(byte_length));
|
|
}
|
|
Runtime::SetupArrayBuffer(isolate, buffer, is_external, data, byte_length);
|
|
|
|
Handle<JSTypedArray> typed_array =
|
|
isolate->factory()->NewJSTypedArray(type, buffer, 0, num_elements);
|
|
Handle<String> name_string = isolate->factory()->InternalizeUtf8String(name);
|
|
// Reset property cell type before (re)initializing.
|
|
JSBuiltinsObject::InvalidatePropertyCell(builtins, name_string);
|
|
JSObject::SetOwnPropertyIgnoreAttributes(builtins, name_string, typed_array,
|
|
DONT_DELETE).Assert();
|
|
return data;
|
|
}
|
|
|
|
|
|
void Genesis::InitializeBuiltinTypedArrays() {
|
|
Handle<JSBuiltinsObject> builtins(native_context()->builtins());
|
|
{ // Initially seed the per-context random number generator using the
|
|
// per-isolate random number generator.
|
|
const size_t num_elements = 2;
|
|
const size_t num_bytes = num_elements * sizeof(uint32_t);
|
|
uint32_t* state = SetBuiltinTypedArray<uint32_t>(isolate(), builtins,
|
|
kExternalUint32Array, NULL,
|
|
num_elements, "rngstate");
|
|
do {
|
|
isolate()->random_number_generator()->NextBytes(state, num_bytes);
|
|
} while (state[0] == 0 || state[1] == 0);
|
|
}
|
|
|
|
{ // Initialize trigonometric lookup tables and constants.
|
|
const size_t num_elements = arraysize(fdlibm::MathConstants::constants);
|
|
double* data = const_cast<double*>(fdlibm::MathConstants::constants);
|
|
SetBuiltinTypedArray<double>(isolate(), builtins, kExternalFloat64Array,
|
|
data, num_elements, "kMath");
|
|
}
|
|
|
|
{ // Initialize a result array for rempio2 calculation
|
|
const size_t num_elements = 2;
|
|
double* data =
|
|
SetBuiltinTypedArray<double>(isolate(), builtins, kExternalFloat64Array,
|
|
NULL, num_elements, "rempio2result");
|
|
for (size_t i = 0; i < num_elements; i++) data[i] = 0;
|
|
}
|
|
}
|
|
|
|
|
|
#define EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(id) \
|
|
void Genesis::InstallNativeFunctions_##id() {}
|
|
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_modules)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_arrays)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_array_includes)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_classes)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_object_literals)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_regexps)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_arrow_functions)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_tostring)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_sloppy)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_unicode)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_unicode_regexps)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_computed_property_names)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_rest_parameters)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_reflect)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_spreadcalls)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_destructuring)
|
|
EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_object)
|
|
|
|
|
|
void Genesis::InstallNativeFunctions_harmony_proxies() {
|
|
if (FLAG_harmony_proxies) {
|
|
INSTALL_NATIVE(JSFunction, "$proxyDerivedHasTrap", derived_has_trap);
|
|
INSTALL_NATIVE(JSFunction, "$proxyDerivedGetTrap", derived_get_trap);
|
|
INSTALL_NATIVE(JSFunction, "$proxyDerivedSetTrap", derived_set_trap);
|
|
INSTALL_NATIVE(JSFunction, "$proxyEnumerate", proxy_enumerate);
|
|
}
|
|
}
|
|
|
|
#undef INSTALL_NATIVE
|
|
|
|
#define EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(id) \
|
|
void Genesis::InitializeGlobal_##id() {}
|
|
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_modules)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_arrays)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_array_includes)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_classes)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object_literals)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_arrow_functions)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_proxies)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_unicode)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_computed_property_names)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_rest_parameters)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_spreadcalls)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_destructuring)
|
|
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object)
|
|
|
|
void Genesis::InitializeGlobal_harmony_regexps() {
|
|
Handle<JSObject> builtins(native_context()->builtins());
|
|
|
|
Handle<HeapObject> flag(FLAG_harmony_regexps ? heap()->true_value()
|
|
: heap()->false_value());
|
|
Runtime::SetObjectProperty(isolate(), builtins,
|
|
factory()->harmony_regexps_string(), flag,
|
|
STRICT).Assert();
|
|
}
|
|
|
|
|
|
void Genesis::InitializeGlobal_harmony_unicode_regexps() {
|
|
Handle<JSObject> builtins(native_context()->builtins());
|
|
|
|
Handle<HeapObject> flag(FLAG_harmony_unicode_regexps ? heap()->true_value()
|
|
: heap()->false_value());
|
|
Runtime::SetObjectProperty(isolate(), builtins,
|
|
factory()->harmony_unicode_regexps_string(), flag,
|
|
STRICT).Assert();
|
|
}
|
|
|
|
|
|
void Genesis::InitializeGlobal_harmony_reflect() {
|
|
Handle<JSObject> builtins(native_context()->builtins());
|
|
// Install references to functions of the Reflect object
|
|
if (FLAG_harmony_reflect || FLAG_harmony_spreadcalls) {
|
|
Handle<JSFunction> apply = InstallFunction(
|
|
builtins, "$reflectApply", JS_OBJECT_TYPE, JSObject::kHeaderSize,
|
|
MaybeHandle<JSObject>(), Builtins::kReflectApply);
|
|
Handle<JSFunction> construct = InstallFunction(
|
|
builtins, "$reflectConstruct", JS_OBJECT_TYPE, JSObject::kHeaderSize,
|
|
MaybeHandle<JSObject>(), Builtins::kReflectConstruct);
|
|
apply->shared()->set_internal_formal_parameter_count(3);
|
|
apply->shared()->set_length(3);
|
|
|
|
construct->shared()->set_internal_formal_parameter_count(3);
|
|
construct->shared()->set_length(2);
|
|
}
|
|
|
|
if (!FLAG_harmony_reflect) return;
|
|
Handle<JSGlobalObject> global(JSGlobalObject::cast(
|
|
native_context()->global_object()));
|
|
Handle<String> reflect_string =
|
|
factory()->NewStringFromStaticChars("Reflect");
|
|
Handle<Object> reflect =
|
|
factory()->NewJSObject(isolate()->object_function(), TENURED);
|
|
JSObject::AddProperty(global, reflect_string, reflect, DONT_ENUM);
|
|
}
|
|
|
|
|
|
void Genesis::InitializeGlobal_harmony_tostring() {
|
|
Handle<JSObject> builtins(native_context()->builtins());
|
|
|
|
Handle<HeapObject> flag(FLAG_harmony_tostring ? heap()->true_value()
|
|
: heap()->false_value());
|
|
Runtime::SetObjectProperty(isolate(), builtins,
|
|
factory()->harmony_tostring_string(), flag,
|
|
STRICT).Assert();
|
|
}
|
|
|
|
|
|
Handle<JSFunction> Genesis::InstallInternalArray(Handle<JSObject> target,
|
|
const char* name,
|
|
ElementsKind elements_kind) {
|
|
// --- I n t e r n a l A r r a y ---
|
|
// An array constructor on the builtins object that works like
|
|
// the public Array constructor, except that its prototype
|
|
// doesn't inherit from Object.prototype.
|
|
// To be used only for internal work by builtins. Instances
|
|
// must not be leaked to user code.
|
|
Handle<JSObject> prototype =
|
|
factory()->NewJSObject(isolate()->object_function(), TENURED);
|
|
Handle<JSFunction> array_function =
|
|
InstallFunction(target, name, JS_ARRAY_TYPE, JSArray::kSize, prototype,
|
|
Builtins::kInternalArrayCode);
|
|
|
|
InternalArrayConstructorStub internal_array_constructor_stub(isolate());
|
|
Handle<Code> code = internal_array_constructor_stub.GetCode();
|
|
array_function->shared()->set_construct_stub(*code);
|
|
array_function->shared()->DontAdaptArguments();
|
|
|
|
Handle<Map> original_map(array_function->initial_map());
|
|
Handle<Map> initial_map = Map::Copy(original_map, "InternalArray");
|
|
initial_map->set_elements_kind(elements_kind);
|
|
JSFunction::SetInitialMap(array_function, initial_map, prototype);
|
|
|
|
// Make "length" magic on instances.
|
|
Map::EnsureDescriptorSlack(initial_map, 1);
|
|
|
|
PropertyAttributes attribs = static_cast<PropertyAttributes>(
|
|
DONT_ENUM | DONT_DELETE);
|
|
|
|
Handle<AccessorInfo> array_length =
|
|
Accessors::ArrayLengthInfo(isolate(), attribs);
|
|
{ // Add length.
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(array_length->name())),
|
|
array_length, attribs);
|
|
initial_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
return array_function;
|
|
}
|
|
|
|
|
|
bool Genesis::InstallNatives() {
|
|
HandleScope scope(isolate());
|
|
|
|
// Create a function for the builtins object. Allocate space for the
|
|
// JavaScript builtins, a reference to the builtins object
|
|
// (itself) and a reference to the native_context directly in the object.
|
|
Handle<Code> code = Handle<Code>(
|
|
isolate()->builtins()->builtin(Builtins::kIllegal));
|
|
Handle<JSFunction> builtins_fun = factory()->NewFunction(
|
|
factory()->empty_string(), code, JS_BUILTINS_OBJECT_TYPE,
|
|
JSBuiltinsObject::kSize);
|
|
|
|
Handle<String> name =
|
|
factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("builtins"));
|
|
builtins_fun->shared()->set_instance_class_name(*name);
|
|
builtins_fun->initial_map()->set_dictionary_map(true);
|
|
builtins_fun->initial_map()->set_prototype(heap()->null_value());
|
|
|
|
// Allocate the builtins object.
|
|
Handle<JSBuiltinsObject> builtins =
|
|
Handle<JSBuiltinsObject>::cast(factory()->NewGlobalObject(builtins_fun));
|
|
builtins->set_builtins(*builtins);
|
|
builtins->set_native_context(*native_context());
|
|
builtins->set_global_proxy(native_context()->global_proxy());
|
|
|
|
|
|
// Set up the 'builtin' property, which refers to the js builtins object.
|
|
static const PropertyAttributes attributes =
|
|
static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE);
|
|
Handle<String> builtins_string =
|
|
factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("builtins"));
|
|
JSObject::AddProperty(builtins, builtins_string, builtins, attributes);
|
|
|
|
// Set up the reference from the global object to the builtins object.
|
|
JSGlobalObject::cast(native_context()->global_object())->
|
|
set_builtins(*builtins);
|
|
|
|
// Create a bridge function that has context in the native context.
|
|
Handle<JSFunction> bridge = factory()->NewFunction(factory()->empty_string());
|
|
DCHECK(bridge->context() == *isolate()->native_context());
|
|
|
|
// Allocate the builtins context.
|
|
Handle<Context> context =
|
|
factory()->NewFunctionContext(Context::MIN_CONTEXT_SLOTS, bridge);
|
|
context->set_global_object(*builtins); // override builtins global object
|
|
|
|
native_context()->set_runtime_context(*context);
|
|
|
|
// Set up shared object to set up cross references between native scripts.
|
|
// "shared" is used for cross references between native scripts that are part
|
|
// of the snapshot. "builtin_exports" is used for experimental natives.
|
|
Handle<JSObject> shared =
|
|
factory()->NewJSObject(isolate()->object_function());
|
|
JSObject::NormalizeProperties(shared, CLEAR_INOBJECT_PROPERTIES, 16,
|
|
"container to share between native scripts");
|
|
Handle<JSObject> builtin_exports =
|
|
factory()->NewJSObject(isolate()->object_function());
|
|
JSObject::NormalizeProperties(builtin_exports, CLEAR_INOBJECT_PROPERTIES, 16,
|
|
"container to export to experimental natives");
|
|
native_context()->set_builtin_exports_object(*builtin_exports);
|
|
|
|
if (FLAG_expose_natives_as != NULL) {
|
|
Handle<String> shared_key = factory()->NewStringFromAsciiChecked("shared");
|
|
JSObject::AddProperty(builtins, shared_key, shared, NONE);
|
|
}
|
|
|
|
{ // -- S c r i p t
|
|
// Builtin functions for Script.
|
|
Handle<JSFunction> script_fun = InstallFunction(
|
|
builtins, "Script", JS_VALUE_TYPE, JSValue::kSize,
|
|
isolate()->initial_object_prototype(), Builtins::kIllegal);
|
|
Handle<JSObject> prototype =
|
|
factory()->NewJSObject(isolate()->object_function(), TENURED);
|
|
Accessors::FunctionSetPrototype(script_fun, prototype).Assert();
|
|
native_context()->set_script_function(*script_fun);
|
|
|
|
Handle<Map> script_map = Handle<Map>(script_fun->initial_map());
|
|
Map::EnsureDescriptorSlack(script_map, 15);
|
|
|
|
PropertyAttributes attribs =
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
Handle<AccessorInfo> script_column =
|
|
Accessors::ScriptColumnOffsetInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_column->name())), script_column,
|
|
attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_id =
|
|
Accessors::ScriptIdInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(Handle<Name>(Name::cast(script_id->name())),
|
|
script_id, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
|
|
Handle<AccessorInfo> script_name =
|
|
Accessors::ScriptNameInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_name->name())), script_name, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_line =
|
|
Accessors::ScriptLineOffsetInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_line->name())), script_line, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_source =
|
|
Accessors::ScriptSourceInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_source->name())), script_source,
|
|
attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_type =
|
|
Accessors::ScriptTypeInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_type->name())), script_type, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_compilation_type =
|
|
Accessors::ScriptCompilationTypeInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_compilation_type->name())),
|
|
script_compilation_type, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_line_ends =
|
|
Accessors::ScriptLineEndsInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_line_ends->name())), script_line_ends,
|
|
attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_context_data =
|
|
Accessors::ScriptContextDataInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_context_data->name())),
|
|
script_context_data, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_eval_from_script =
|
|
Accessors::ScriptEvalFromScriptInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_eval_from_script->name())),
|
|
script_eval_from_script, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_eval_from_script_position =
|
|
Accessors::ScriptEvalFromScriptPositionInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_eval_from_script_position->name())),
|
|
script_eval_from_script_position, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_eval_from_function_name =
|
|
Accessors::ScriptEvalFromFunctionNameInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_eval_from_function_name->name())),
|
|
script_eval_from_function_name, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_source_url =
|
|
Accessors::ScriptSourceUrlInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_source_url->name())),
|
|
script_source_url, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_source_mapping_url =
|
|
Accessors::ScriptSourceMappingUrlInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_source_mapping_url->name())),
|
|
script_source_mapping_url, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
Handle<AccessorInfo> script_is_embedder_debug_script =
|
|
Accessors::ScriptIsEmbedderDebugScriptInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(
|
|
Handle<Name>(Name::cast(script_is_embedder_debug_script->name())),
|
|
script_is_embedder_debug_script, attribs);
|
|
script_map->AppendDescriptor(&d);
|
|
}
|
|
|
|
// Allocate the empty script.
|
|
Handle<Script> script = factory()->NewScript(factory()->empty_string());
|
|
script->set_type(Smi::FromInt(Script::TYPE_NATIVE));
|
|
heap()->public_set_empty_script(*script);
|
|
}
|
|
{
|
|
// Builtin function for OpaqueReference -- a JSValue-based object,
|
|
// that keeps its field isolated from JavaScript code. It may store
|
|
// objects, that JavaScript code may not access.
|
|
Handle<JSFunction> opaque_reference_fun = InstallFunction(
|
|
builtins, "OpaqueReference", JS_VALUE_TYPE, JSValue::kSize,
|
|
isolate()->initial_object_prototype(), Builtins::kIllegal);
|
|
Handle<JSObject> prototype =
|
|
factory()->NewJSObject(isolate()->object_function(), TENURED);
|
|
Accessors::FunctionSetPrototype(opaque_reference_fun, prototype).Assert();
|
|
native_context()->set_opaque_reference_function(*opaque_reference_fun);
|
|
}
|
|
|
|
// InternalArrays should not use Smi-Only array optimizations. There are too
|
|
// many places in the C++ runtime code (e.g. RegEx) that assume that
|
|
// elements in InternalArrays can be set to non-Smi values without going
|
|
// through a common bottleneck that would make the SMI_ONLY -> FAST_ELEMENT
|
|
// transition easy to trap. Moreover, they rarely are smi-only.
|
|
{
|
|
HandleScope scope(isolate());
|
|
Handle<JSObject> builtin_exports =
|
|
Handle<JSObject>::cast(isolate()->builtin_exports_object());
|
|
Handle<JSFunction> array_function = InstallInternalArray(
|
|
builtin_exports, "InternalArray", FAST_HOLEY_ELEMENTS);
|
|
native_context()->set_internal_array_function(*array_function);
|
|
InstallInternalArray(builtin_exports, "InternalPackedArray", FAST_ELEMENTS);
|
|
}
|
|
|
|
{ // -- S e t I t e r a t o r
|
|
Handle<JSFunction> set_iterator_function = InstallFunction(
|
|
builtins, "SetIterator", JS_SET_ITERATOR_TYPE, JSSetIterator::kSize,
|
|
isolate()->initial_object_prototype(), Builtins::kIllegal);
|
|
native_context()->set_set_iterator_map(
|
|
set_iterator_function->initial_map());
|
|
}
|
|
|
|
{ // -- M a p I t e r a t o r
|
|
Handle<JSFunction> map_iterator_function = InstallFunction(
|
|
builtins, "MapIterator", JS_MAP_ITERATOR_TYPE, JSMapIterator::kSize,
|
|
isolate()->initial_object_prototype(), Builtins::kIllegal);
|
|
native_context()->set_map_iterator_map(
|
|
map_iterator_function->initial_map());
|
|
}
|
|
|
|
{
|
|
// Create generator meta-objects and install them on the builtins object.
|
|
Handle<JSObject> builtins(native_context()->builtins());
|
|
Handle<JSObject> generator_object_prototype =
|
|
factory()->NewJSObject(isolate()->object_function(), TENURED);
|
|
Handle<JSObject> generator_function_prototype =
|
|
factory()->NewJSObject(isolate()->object_function(), TENURED);
|
|
JSObject::AddProperty(
|
|
builtins,
|
|
factory()->InternalizeUtf8String("GeneratorFunctionPrototype"),
|
|
generator_function_prototype,
|
|
static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY));
|
|
|
|
JSObject::AddProperty(
|
|
generator_function_prototype,
|
|
factory()->InternalizeUtf8String("prototype"),
|
|
generator_object_prototype,
|
|
static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
|
|
|
|
static const bool kUseStrictFunctionMap = true;
|
|
InstallFunction(builtins, "GeneratorFunction", JS_FUNCTION_TYPE,
|
|
JSFunction::kSize, generator_function_prototype,
|
|
Builtins::kIllegal, kUseStrictFunctionMap);
|
|
|
|
// Create maps for generator functions and their prototypes. Store those
|
|
// maps in the native context. Generator functions do not have writable
|
|
// prototypes, nor do they have "caller" or "arguments" accessors.
|
|
Handle<Map> strict_function_map(native_context()->strict_function_map());
|
|
Handle<Map> sloppy_generator_function_map =
|
|
Map::Copy(strict_function_map, "SloppyGeneratorFunction");
|
|
Map::SetPrototype(sloppy_generator_function_map,
|
|
generator_function_prototype);
|
|
native_context()->set_sloppy_generator_function_map(
|
|
*sloppy_generator_function_map);
|
|
|
|
Handle<Map> strict_generator_function_map =
|
|
Map::Copy(strict_function_map, "StrictGeneratorFunction");
|
|
Map::SetPrototype(strict_generator_function_map,
|
|
generator_function_prototype);
|
|
native_context()->set_strict_generator_function_map(
|
|
*strict_generator_function_map);
|
|
|
|
Handle<Map> strong_function_map(native_context()->strong_function_map());
|
|
Handle<Map> strong_generator_function_map =
|
|
Map::Copy(strong_function_map, "StrongGeneratorFunction");
|
|
Map::SetPrototype(strong_generator_function_map,
|
|
generator_function_prototype);
|
|
native_context()->set_strong_generator_function_map(
|
|
*strong_generator_function_map);
|
|
|
|
Handle<JSFunction> object_function(native_context()->object_function());
|
|
Handle<Map> generator_object_prototype_map = Map::Create(isolate(), 0);
|
|
Map::SetPrototype(generator_object_prototype_map,
|
|
generator_object_prototype);
|
|
native_context()->set_generator_object_prototype_map(
|
|
*generator_object_prototype_map);
|
|
}
|
|
|
|
if (FLAG_disable_native_files) {
|
|
PrintF("Warning: Running without installed natives!\n");
|
|
return true;
|
|
}
|
|
|
|
// Install public symbols.
|
|
{
|
|
static const PropertyAttributes attributes =
|
|
static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE);
|
|
#define INSTALL_PUBLIC_SYMBOL(name, varname, description) \
|
|
Handle<String> varname = factory()->NewStringFromStaticChars(#varname); \
|
|
JSObject::AddProperty(builtins, varname, factory()->name(), attributes);
|
|
PUBLIC_SYMBOL_LIST(INSTALL_PUBLIC_SYMBOL)
|
|
#undef INSTALL_PUBLIC_SYMBOL
|
|
}
|
|
|
|
// Install natives. Everything exported to experimental natives is also
|
|
// shared to regular natives.
|
|
TransferNamedProperties(builtin_exports, shared);
|
|
int i = Natives::GetDebuggerCount();
|
|
if (!CompileBuiltin(isolate(), i, shared)) return false;
|
|
if (!InstallJSBuiltins(builtins)) return false;
|
|
|
|
for (++i; i < Natives::GetBuiltinsCount(); ++i) {
|
|
if (!CompileBuiltin(isolate(), i, shared)) return false;
|
|
}
|
|
|
|
InstallNativeFunctions();
|
|
|
|
auto function_cache =
|
|
ObjectHashTable::New(isolate(), ApiNatives::kInitialFunctionCacheSize);
|
|
native_context()->set_function_cache(*function_cache);
|
|
|
|
// Store the map for the string prototype after the natives has been compiled
|
|
// and the String function has been set up.
|
|
Handle<JSFunction> string_function(native_context()->string_function());
|
|
DCHECK(JSObject::cast(
|
|
string_function->initial_map()->prototype())->HasFastProperties());
|
|
native_context()->set_string_function_prototype_map(
|
|
HeapObject::cast(string_function->initial_map()->prototype())->map());
|
|
|
|
// Install Function.prototype.call and apply.
|
|
{
|
|
Handle<String> key = factory()->Function_string();
|
|
Handle<JSFunction> function =
|
|
Handle<JSFunction>::cast(Object::GetProperty(
|
|
handle(native_context()->global_object()), key).ToHandleChecked());
|
|
Handle<JSObject> proto =
|
|
Handle<JSObject>(JSObject::cast(function->instance_prototype()));
|
|
|
|
// Install the call and the apply functions.
|
|
Handle<JSFunction> call =
|
|
InstallFunction(proto, "call", JS_OBJECT_TYPE, JSObject::kHeaderSize,
|
|
MaybeHandle<JSObject>(), Builtins::kFunctionCall);
|
|
Handle<JSFunction> apply =
|
|
InstallFunction(proto, "apply", JS_OBJECT_TYPE, JSObject::kHeaderSize,
|
|
MaybeHandle<JSObject>(), Builtins::kFunctionApply);
|
|
|
|
// Make sure that Function.prototype.call appears to be compiled.
|
|
// The code will never be called, but inline caching for call will
|
|
// only work if it appears to be compiled.
|
|
call->shared()->DontAdaptArguments();
|
|
DCHECK(call->is_compiled());
|
|
|
|
// Set the expected parameters for apply to 2; required by builtin.
|
|
apply->shared()->set_internal_formal_parameter_count(2);
|
|
|
|
// Set the lengths for the functions to satisfy ECMA-262.
|
|
call->shared()->set_length(1);
|
|
apply->shared()->set_length(2);
|
|
}
|
|
|
|
InstallBuiltinFunctionIds();
|
|
|
|
// Create a constructor for RegExp results (a variant of Array that
|
|
// predefines the two properties index and match).
|
|
{
|
|
// RegExpResult initial map.
|
|
|
|
// Find global.Array.prototype to inherit from.
|
|
Handle<JSFunction> array_constructor(native_context()->array_function());
|
|
Handle<JSObject> array_prototype(
|
|
JSObject::cast(array_constructor->instance_prototype()));
|
|
|
|
// Add initial map.
|
|
Handle<Map> initial_map =
|
|
factory()->NewMap(JS_ARRAY_TYPE, JSRegExpResult::kSize);
|
|
initial_map->SetConstructor(*array_constructor);
|
|
|
|
// Set prototype on map.
|
|
initial_map->set_non_instance_prototype(false);
|
|
Map::SetPrototype(initial_map, array_prototype);
|
|
|
|
// Update map with length accessor from Array and add "index" and "input".
|
|
Map::EnsureDescriptorSlack(initial_map, 3);
|
|
|
|
{
|
|
JSFunction* array_function = native_context()->array_function();
|
|
Handle<DescriptorArray> array_descriptors(
|
|
array_function->initial_map()->instance_descriptors());
|
|
Handle<String> length = factory()->length_string();
|
|
int old = array_descriptors->SearchWithCache(
|
|
*length, array_function->initial_map());
|
|
DCHECK(old != DescriptorArray::kNotFound);
|
|
AccessorConstantDescriptor desc(
|
|
length, handle(array_descriptors->GetValue(old), isolate()),
|
|
array_descriptors->GetDetails(old).attributes());
|
|
initial_map->AppendDescriptor(&desc);
|
|
}
|
|
{
|
|
DataDescriptor index_field(factory()->index_string(),
|
|
JSRegExpResult::kIndexIndex, NONE,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&index_field);
|
|
}
|
|
|
|
{
|
|
DataDescriptor input_field(factory()->input_string(),
|
|
JSRegExpResult::kInputIndex, NONE,
|
|
Representation::Tagged());
|
|
initial_map->AppendDescriptor(&input_field);
|
|
}
|
|
|
|
initial_map->set_inobject_properties(2);
|
|
initial_map->set_pre_allocated_property_fields(2);
|
|
initial_map->set_unused_property_fields(0);
|
|
|
|
native_context()->set_regexp_result_map(*initial_map);
|
|
}
|
|
|
|
// Add @@iterator method to the arguments object maps.
|
|
{
|
|
PropertyAttributes attribs = DONT_ENUM;
|
|
Handle<AccessorInfo> arguments_iterator =
|
|
Accessors::ArgumentsIteratorInfo(isolate(), attribs);
|
|
{
|
|
AccessorConstantDescriptor d(factory()->iterator_symbol(),
|
|
arguments_iterator, attribs);
|
|
Handle<Map> map(native_context()->sloppy_arguments_map());
|
|
Map::EnsureDescriptorSlack(map, 1);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
{
|
|
AccessorConstantDescriptor d(factory()->iterator_symbol(),
|
|
arguments_iterator, attribs);
|
|
Handle<Map> map(native_context()->aliased_arguments_map());
|
|
Map::EnsureDescriptorSlack(map, 1);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
{
|
|
AccessorConstantDescriptor d(factory()->iterator_symbol(),
|
|
arguments_iterator, attribs);
|
|
Handle<Map> map(native_context()->strict_arguments_map());
|
|
Map::EnsureDescriptorSlack(map, 1);
|
|
map->AppendDescriptor(&d);
|
|
}
|
|
}
|
|
|
|
#ifdef VERIFY_HEAP
|
|
if (FLAG_verify_heap) {
|
|
builtins->ObjectVerify();
|
|
}
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool Genesis::InstallExperimentalNatives() {
|
|
static const char* harmony_arrays_natives[] = {
|
|
"native harmony-array.js", "native harmony-typedarray.js", nullptr};
|
|
static const char* harmony_array_includes_natives[] = {
|
|
"native harmony-array-includes.js", nullptr};
|
|
static const char* harmony_proxies_natives[] = {"native proxy.js", nullptr};
|
|
static const char* harmony_classes_natives[] = {nullptr};
|
|
static const char* harmony_modules_natives[] = {nullptr};
|
|
static const char* harmony_object_literals_natives[] = {nullptr};
|
|
static const char* harmony_regexps_natives[] = {"native harmony-regexp.js",
|
|
nullptr};
|
|
static const char* harmony_arrow_functions_natives[] = {nullptr};
|
|
static const char* harmony_tostring_natives[] = {"native harmony-tostring.js",
|
|
nullptr};
|
|
static const char* harmony_sloppy_natives[] = {nullptr};
|
|
static const char* harmony_unicode_natives[] = {nullptr};
|
|
static const char* harmony_unicode_regexps_natives[] = {nullptr};
|
|
static const char* harmony_computed_property_names_natives[] = {nullptr};
|
|
static const char* harmony_rest_parameters_natives[] = {nullptr};
|
|
static const char* harmony_reflect_natives[] = {"native harmony-reflect.js",
|
|
nullptr};
|
|
static const char* harmony_spreadcalls_natives[] = {
|
|
"native harmony-spread.js", nullptr};
|
|
static const char* harmony_destructuring_natives[] = {nullptr};
|
|
static const char* harmony_object_natives[] = {"native harmony-object.js",
|
|
NULL};
|
|
|
|
for (int i = ExperimentalNatives::GetDebuggerCount();
|
|
i < ExperimentalNatives::GetBuiltinsCount(); i++) {
|
|
#define INSTALL_EXPERIMENTAL_NATIVES(id, desc) \
|
|
if (FLAG_##id) { \
|
|
for (size_t j = 0; id##_natives[j] != NULL; j++) { \
|
|
Vector<const char> script_name = ExperimentalNatives::GetScriptName(i); \
|
|
if (strncmp(script_name.start(), id##_natives[j], \
|
|
script_name.length()) == 0) { \
|
|
if (!CompileExperimentalBuiltin(isolate(), i)) return false; \
|
|
} \
|
|
} \
|
|
}
|
|
HARMONY_INPROGRESS(INSTALL_EXPERIMENTAL_NATIVES);
|
|
HARMONY_STAGED(INSTALL_EXPERIMENTAL_NATIVES);
|
|
HARMONY_SHIPPING(INSTALL_EXPERIMENTAL_NATIVES);
|
|
#undef INSTALL_EXPERIMENTAL_NATIVES
|
|
}
|
|
|
|
InstallExperimentalNativeFunctions();
|
|
return true;
|
|
}
|
|
|
|
|
|
bool Genesis::InstallExtraNatives() {
|
|
for (int i = ExtraNatives::GetDebuggerCount();
|
|
i < ExtraNatives::GetBuiltinsCount(); i++) {
|
|
if (!CompileExtraBuiltin(isolate(), i)) return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
static void InstallBuiltinFunctionId(Handle<JSObject> holder,
|
|
const char* function_name,
|
|
BuiltinFunctionId id) {
|
|
Isolate* isolate = holder->GetIsolate();
|
|
Handle<Object> function_object =
|
|
Object::GetProperty(isolate, holder, function_name).ToHandleChecked();
|
|
Handle<JSFunction> function = Handle<JSFunction>::cast(function_object);
|
|
function->shared()->set_function_data(Smi::FromInt(id));
|
|
}
|
|
|
|
|
|
void Genesis::InstallBuiltinFunctionIds() {
|
|
HandleScope scope(isolate());
|
|
struct BuiltinFunctionIds {
|
|
const char* holder_expr;
|
|
const char* fun_name;
|
|
BuiltinFunctionId id;
|
|
};
|
|
|
|
#define INSTALL_BUILTIN_ID(holder_expr, fun_name, name) \
|
|
{ #holder_expr, #fun_name, k##name } \
|
|
,
|
|
const BuiltinFunctionIds builtins[] = {
|
|
FUNCTIONS_WITH_ID_LIST(INSTALL_BUILTIN_ID)};
|
|
#undef INSTALL_BUILTIN_ID
|
|
|
|
for (const BuiltinFunctionIds& builtin : builtins) {
|
|
Handle<JSObject> holder =
|
|
ResolveBuiltinIdHolder(native_context(), builtin.holder_expr);
|
|
InstallBuiltinFunctionId(holder, builtin.fun_name, builtin.id);
|
|
}
|
|
}
|
|
|
|
|
|
// Do not forget to update macros.py with named constant
|
|
// of cache id.
|
|
#define JSFUNCTION_RESULT_CACHE_LIST(F) \
|
|
F(16, native_context()->regexp_function())
|
|
|
|
|
|
static FixedArray* CreateCache(int size, Handle<JSFunction> factory_function) {
|
|
Factory* factory = factory_function->GetIsolate()->factory();
|
|
// Caches are supposed to live for a long time, allocate in old space.
|
|
int array_size = JSFunctionResultCache::kEntriesIndex + 2 * size;
|
|
// Cannot use cast as object is not fully initialized yet.
|
|
JSFunctionResultCache* cache = reinterpret_cast<JSFunctionResultCache*>(
|
|
*factory->NewFixedArrayWithHoles(array_size, TENURED));
|
|
cache->set(JSFunctionResultCache::kFactoryIndex, *factory_function);
|
|
cache->MakeZeroSize();
|
|
return cache;
|
|
}
|
|
|
|
|
|
void Genesis::InstallJSFunctionResultCaches() {
|
|
const int kNumberOfCaches = 0 +
|
|
#define F(size, func) + 1
|
|
JSFUNCTION_RESULT_CACHE_LIST(F)
|
|
#undef F
|
|
;
|
|
|
|
Handle<FixedArray> caches =
|
|
factory()->NewFixedArray(kNumberOfCaches, TENURED);
|
|
|
|
int index = 0;
|
|
|
|
#define F(size, func) do { \
|
|
FixedArray* cache = CreateCache((size), Handle<JSFunction>(func)); \
|
|
caches->set(index++, cache); \
|
|
} while (false)
|
|
|
|
JSFUNCTION_RESULT_CACHE_LIST(F);
|
|
|
|
#undef F
|
|
|
|
native_context()->set_jsfunction_result_caches(*caches);
|
|
}
|
|
|
|
|
|
void Genesis::InitializeNormalizedMapCaches() {
|
|
Handle<NormalizedMapCache> cache = NormalizedMapCache::New(isolate());
|
|
native_context()->set_normalized_map_cache(*cache);
|
|
}
|
|
|
|
|
|
bool Bootstrapper::InstallExtensions(Handle<Context> native_context,
|
|
v8::ExtensionConfiguration* extensions) {
|
|
BootstrapperActive active(this);
|
|
SaveContext saved_context(isolate_);
|
|
isolate_->set_context(*native_context);
|
|
return Genesis::InstallExtensions(native_context, extensions) &&
|
|
Genesis::InstallSpecialObjects(native_context);
|
|
}
|
|
|
|
|
|
bool Genesis::InstallSpecialObjects(Handle<Context> native_context) {
|
|
Isolate* isolate = native_context->GetIsolate();
|
|
// Don't install extensions into the snapshot.
|
|
if (isolate->serializer_enabled()) return true;
|
|
|
|
Factory* factory = isolate->factory();
|
|
HandleScope scope(isolate);
|
|
Handle<JSGlobalObject> global(JSGlobalObject::cast(
|
|
native_context->global_object()));
|
|
|
|
Handle<JSObject> Error = Handle<JSObject>::cast(
|
|
Object::GetProperty(isolate, global, "Error").ToHandleChecked());
|
|
Handle<String> name =
|
|
factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("stackTraceLimit"));
|
|
Handle<Smi> stack_trace_limit(Smi::FromInt(FLAG_stack_trace_limit), isolate);
|
|
JSObject::AddProperty(Error, name, stack_trace_limit, NONE);
|
|
|
|
Handle<Object> builtin_exports(native_context->builtin_exports_object(),
|
|
isolate);
|
|
native_context->set_builtin_exports_object(Smi::FromInt(0));
|
|
|
|
// Expose the natives in global if a name for it is specified.
|
|
if (FLAG_expose_natives_as != NULL && strlen(FLAG_expose_natives_as) != 0) {
|
|
Handle<String> natives_key =
|
|
factory->InternalizeUtf8String(FLAG_expose_natives_as);
|
|
uint32_t dummy_index;
|
|
if (natives_key->AsArrayIndex(&dummy_index)) return true;
|
|
Handle<JSBuiltinsObject> natives(global->builtins());
|
|
JSObject::AddProperty(global, natives_key, natives, DONT_ENUM);
|
|
Handle<String> builtin_exports_key =
|
|
factory->NewStringFromAsciiChecked("builtin_exports");
|
|
JSObject::AddProperty(natives, builtin_exports_key, builtin_exports, NONE);
|
|
}
|
|
|
|
// Expose the stack trace symbol to native JS.
|
|
RETURN_ON_EXCEPTION_VALUE(isolate,
|
|
JSObject::SetOwnPropertyIgnoreAttributes(
|
|
handle(native_context->builtins(), isolate),
|
|
factory->InternalizeOneByteString(
|
|
STATIC_CHAR_VECTOR("$stackTraceSymbol")),
|
|
factory->stack_trace_symbol(), NONE),
|
|
false);
|
|
|
|
// Expose the debug global object in global if a name for it is specified.
|
|
if (FLAG_expose_debug_as != NULL && strlen(FLAG_expose_debug_as) != 0) {
|
|
// If loading fails we just bail out without installing the
|
|
// debugger but without tanking the whole context.
|
|
Debug* debug = isolate->debug();
|
|
if (!debug->Load()) return true;
|
|
Handle<Context> debug_context = debug->debug_context();
|
|
// Set the security token for the debugger context to the same as
|
|
// the shell native context to allow calling between these (otherwise
|
|
// exposing debug global object doesn't make much sense).
|
|
debug_context->set_security_token(native_context->security_token());
|
|
Handle<String> debug_string =
|
|
factory->InternalizeUtf8String(FLAG_expose_debug_as);
|
|
uint32_t index;
|
|
if (debug_string->AsArrayIndex(&index)) return true;
|
|
Handle<Object> global_proxy(debug_context->global_proxy(), isolate);
|
|
JSObject::AddProperty(global, debug_string, global_proxy, DONT_ENUM);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
static uint32_t Hash(RegisteredExtension* extension) {
|
|
return v8::internal::ComputePointerHash(extension);
|
|
}
|
|
|
|
|
|
Genesis::ExtensionStates::ExtensionStates() : map_(HashMap::PointersMatch, 8) {}
|
|
|
|
Genesis::ExtensionTraversalState Genesis::ExtensionStates::get_state(
|
|
RegisteredExtension* extension) {
|
|
i::HashMap::Entry* entry = map_.Lookup(extension, Hash(extension));
|
|
if (entry == NULL) {
|
|
return UNVISITED;
|
|
}
|
|
return static_cast<ExtensionTraversalState>(
|
|
reinterpret_cast<intptr_t>(entry->value));
|
|
}
|
|
|
|
void Genesis::ExtensionStates::set_state(RegisteredExtension* extension,
|
|
ExtensionTraversalState state) {
|
|
map_.LookupOrInsert(extension, Hash(extension))->value =
|
|
reinterpret_cast<void*>(static_cast<intptr_t>(state));
|
|
}
|
|
|
|
|
|
bool Genesis::InstallExtensions(Handle<Context> native_context,
|
|
v8::ExtensionConfiguration* extensions) {
|
|
Isolate* isolate = native_context->GetIsolate();
|
|
ExtensionStates extension_states; // All extensions have state UNVISITED.
|
|
return InstallAutoExtensions(isolate, &extension_states) &&
|
|
(!FLAG_expose_free_buffer ||
|
|
InstallExtension(isolate, "v8/free-buffer", &extension_states)) &&
|
|
(!FLAG_expose_gc ||
|
|
InstallExtension(isolate, "v8/gc", &extension_states)) &&
|
|
(!FLAG_expose_externalize_string ||
|
|
InstallExtension(isolate, "v8/externalize", &extension_states)) &&
|
|
(!FLAG_track_gc_object_stats ||
|
|
InstallExtension(isolate, "v8/statistics", &extension_states)) &&
|
|
(!FLAG_expose_trigger_failure ||
|
|
InstallExtension(isolate, "v8/trigger-failure", &extension_states)) &&
|
|
InstallRequestedExtensions(isolate, extensions, &extension_states);
|
|
}
|
|
|
|
|
|
bool Genesis::InstallAutoExtensions(Isolate* isolate,
|
|
ExtensionStates* extension_states) {
|
|
for (v8::RegisteredExtension* it = v8::RegisteredExtension::first_extension();
|
|
it != NULL;
|
|
it = it->next()) {
|
|
if (it->extension()->auto_enable() &&
|
|
!InstallExtension(isolate, it, extension_states)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool Genesis::InstallRequestedExtensions(Isolate* isolate,
|
|
v8::ExtensionConfiguration* extensions,
|
|
ExtensionStates* extension_states) {
|
|
for (const char** it = extensions->begin(); it != extensions->end(); ++it) {
|
|
if (!InstallExtension(isolate, *it, extension_states)) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
// Installs a named extension. This methods is unoptimized and does
|
|
// not scale well if we want to support a large number of extensions.
|
|
bool Genesis::InstallExtension(Isolate* isolate,
|
|
const char* name,
|
|
ExtensionStates* extension_states) {
|
|
for (v8::RegisteredExtension* it = v8::RegisteredExtension::first_extension();
|
|
it != NULL;
|
|
it = it->next()) {
|
|
if (strcmp(name, it->extension()->name()) == 0) {
|
|
return InstallExtension(isolate, it, extension_states);
|
|
}
|
|
}
|
|
return Utils::ApiCheck(false,
|
|
"v8::Context::New()",
|
|
"Cannot find required extension");
|
|
}
|
|
|
|
|
|
bool Genesis::InstallExtension(Isolate* isolate,
|
|
v8::RegisteredExtension* current,
|
|
ExtensionStates* extension_states) {
|
|
HandleScope scope(isolate);
|
|
|
|
if (extension_states->get_state(current) == INSTALLED) return true;
|
|
// The current node has already been visited so there must be a
|
|
// cycle in the dependency graph; fail.
|
|
if (!Utils::ApiCheck(extension_states->get_state(current) != VISITED,
|
|
"v8::Context::New()",
|
|
"Circular extension dependency")) {
|
|
return false;
|
|
}
|
|
DCHECK(extension_states->get_state(current) == UNVISITED);
|
|
extension_states->set_state(current, VISITED);
|
|
v8::Extension* extension = current->extension();
|
|
// Install the extension's dependencies
|
|
for (int i = 0; i < extension->dependency_count(); i++) {
|
|
if (!InstallExtension(isolate,
|
|
extension->dependencies()[i],
|
|
extension_states)) {
|
|
return false;
|
|
}
|
|
}
|
|
// We do not expect this to throw an exception. Change this if it does.
|
|
bool result = CompileExtension(isolate, extension);
|
|
DCHECK(isolate->has_pending_exception() != result);
|
|
if (!result) {
|
|
// We print out the name of the extension that fail to install.
|
|
// When an error is thrown during bootstrapping we automatically print
|
|
// the line number at which this happened to the console in the isolate
|
|
// error throwing functionality.
|
|
base::OS::PrintError("Error installing extension '%s'.\n",
|
|
current->extension()->name());
|
|
isolate->clear_pending_exception();
|
|
}
|
|
extension_states->set_state(current, INSTALLED);
|
|
isolate->NotifyExtensionInstalled();
|
|
return result;
|
|
}
|
|
|
|
|
|
bool Genesis::InstallJSBuiltins(Handle<JSBuiltinsObject> builtins) {
|
|
HandleScope scope(isolate());
|
|
for (int i = 0; i < Builtins::NumberOfJavaScriptBuiltins(); i++) {
|
|
Builtins::JavaScript id = static_cast<Builtins::JavaScript>(i);
|
|
Handle<Object> function_object = Object::GetProperty(
|
|
isolate(), builtins, Builtins::GetName(id)).ToHandleChecked();
|
|
Handle<JSFunction> function = Handle<JSFunction>::cast(function_object);
|
|
builtins->set_javascript_builtin(id, *function);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool Genesis::ConfigureGlobalObjects(
|
|
v8::Handle<v8::ObjectTemplate> global_proxy_template) {
|
|
Handle<JSObject> global_proxy(
|
|
JSObject::cast(native_context()->global_proxy()));
|
|
Handle<JSObject> global_object(
|
|
JSObject::cast(native_context()->global_object()));
|
|
|
|
if (!global_proxy_template.IsEmpty()) {
|
|
// Configure the global proxy object.
|
|
Handle<ObjectTemplateInfo> global_proxy_data =
|
|
v8::Utils::OpenHandle(*global_proxy_template);
|
|
if (!ConfigureApiObject(global_proxy, global_proxy_data)) return false;
|
|
|
|
// Configure the global object.
|
|
Handle<FunctionTemplateInfo> proxy_constructor(
|
|
FunctionTemplateInfo::cast(global_proxy_data->constructor()));
|
|
if (!proxy_constructor->prototype_template()->IsUndefined()) {
|
|
Handle<ObjectTemplateInfo> global_object_data(
|
|
ObjectTemplateInfo::cast(proxy_constructor->prototype_template()));
|
|
if (!ConfigureApiObject(global_object, global_object_data)) return false;
|
|
}
|
|
}
|
|
|
|
SetObjectPrototype(global_proxy, global_object);
|
|
|
|
native_context()->set_initial_array_prototype(
|
|
JSArray::cast(native_context()->array_function()->prototype()));
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool Genesis::ConfigureApiObject(Handle<JSObject> object,
|
|
Handle<ObjectTemplateInfo> object_template) {
|
|
DCHECK(!object_template.is_null());
|
|
DCHECK(FunctionTemplateInfo::cast(object_template->constructor())
|
|
->IsTemplateFor(object->map()));;
|
|
|
|
MaybeHandle<JSObject> maybe_obj =
|
|
ApiNatives::InstantiateObject(object_template);
|
|
Handle<JSObject> obj;
|
|
if (!maybe_obj.ToHandle(&obj)) {
|
|
DCHECK(isolate()->has_pending_exception());
|
|
isolate()->clear_pending_exception();
|
|
return false;
|
|
}
|
|
TransferObject(obj, object);
|
|
return true;
|
|
}
|
|
|
|
|
|
void Genesis::TransferNamedProperties(Handle<JSObject> from,
|
|
Handle<JSObject> to) {
|
|
// If JSObject::AddProperty asserts due to already existing property,
|
|
// it is likely due to both global objects sharing property name(s).
|
|
// Merging those two global objects is impossible.
|
|
// The global template must not create properties that already exist
|
|
// in the snapshotted global object.
|
|
if (from->HasFastProperties()) {
|
|
Handle<DescriptorArray> descs =
|
|
Handle<DescriptorArray>(from->map()->instance_descriptors());
|
|
for (int i = 0; i < from->map()->NumberOfOwnDescriptors(); i++) {
|
|
PropertyDetails details = descs->GetDetails(i);
|
|
switch (details.type()) {
|
|
case DATA: {
|
|
HandleScope inner(isolate());
|
|
Handle<Name> key = Handle<Name>(descs->GetKey(i));
|
|
FieldIndex index = FieldIndex::ForDescriptor(from->map(), i);
|
|
DCHECK(!descs->GetDetails(i).representation().IsDouble());
|
|
Handle<Object> value = Handle<Object>(from->RawFastPropertyAt(index),
|
|
isolate());
|
|
JSObject::AddProperty(to, key, value, details.attributes());
|
|
break;
|
|
}
|
|
case DATA_CONSTANT: {
|
|
HandleScope inner(isolate());
|
|
Handle<Name> key = Handle<Name>(descs->GetKey(i));
|
|
Handle<Object> constant(descs->GetConstant(i), isolate());
|
|
JSObject::AddProperty(to, key, constant, details.attributes());
|
|
break;
|
|
}
|
|
case ACCESSOR:
|
|
UNREACHABLE();
|
|
case ACCESSOR_CONSTANT: {
|
|
Handle<Name> key(descs->GetKey(i));
|
|
LookupIterator it(to, key, LookupIterator::OWN_SKIP_INTERCEPTOR);
|
|
CHECK_NE(LookupIterator::ACCESS_CHECK, it.state());
|
|
// If the property is already there we skip it
|
|
if (it.IsFound()) continue;
|
|
HandleScope inner(isolate());
|
|
DCHECK(!to->HasFastProperties());
|
|
// Add to dictionary.
|
|
Handle<Object> callbacks(descs->GetCallbacksObject(i), isolate());
|
|
PropertyDetails d(details.attributes(), ACCESSOR_CONSTANT, i + 1,
|
|
PropertyCellType::kMutable);
|
|
JSObject::SetNormalizedProperty(to, key, callbacks, d);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
Handle<NameDictionary> properties =
|
|
Handle<NameDictionary>(from->property_dictionary());
|
|
int capacity = properties->Capacity();
|
|
for (int i = 0; i < capacity; i++) {
|
|
Object* raw_key(properties->KeyAt(i));
|
|
if (properties->IsKey(raw_key)) {
|
|
DCHECK(raw_key->IsName());
|
|
// If the property is already there we skip it.
|
|
Handle<Name> key(Name::cast(raw_key));
|
|
LookupIterator it(to, key, LookupIterator::OWN_SKIP_INTERCEPTOR);
|
|
CHECK_NE(LookupIterator::ACCESS_CHECK, it.state());
|
|
if (it.IsFound()) continue;
|
|
// Set the property.
|
|
Handle<Object> value = Handle<Object>(properties->ValueAt(i),
|
|
isolate());
|
|
DCHECK(!value->IsCell());
|
|
if (value->IsPropertyCell()) {
|
|
value = handle(PropertyCell::cast(*value)->value(), isolate());
|
|
}
|
|
if (value->IsTheHole()) continue;
|
|
PropertyDetails details = properties->DetailsAt(i);
|
|
DCHECK_EQ(kData, details.kind());
|
|
JSObject::AddProperty(to, key, value, details.attributes());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Genesis::TransferIndexedProperties(Handle<JSObject> from,
|
|
Handle<JSObject> to) {
|
|
// Cloning the elements array is sufficient.
|
|
Handle<FixedArray> from_elements =
|
|
Handle<FixedArray>(FixedArray::cast(from->elements()));
|
|
Handle<FixedArray> to_elements = factory()->CopyFixedArray(from_elements);
|
|
to->set_elements(*to_elements);
|
|
}
|
|
|
|
|
|
void Genesis::TransferObject(Handle<JSObject> from, Handle<JSObject> to) {
|
|
HandleScope outer(isolate());
|
|
|
|
DCHECK(!from->IsJSArray());
|
|
DCHECK(!to->IsJSArray());
|
|
|
|
TransferNamedProperties(from, to);
|
|
TransferIndexedProperties(from, to);
|
|
|
|
// Transfer the prototype (new map is needed).
|
|
Handle<Object> proto(from->map()->prototype(), isolate());
|
|
SetObjectPrototype(to, proto);
|
|
}
|
|
|
|
|
|
void Genesis::MakeFunctionInstancePrototypeWritable() {
|
|
// The maps with writable prototype are created in CreateEmptyFunction
|
|
// and CreateStrictModeFunctionMaps respectively. Initially the maps are
|
|
// created with read-only prototype for JS builtins processing.
|
|
DCHECK(!sloppy_function_map_writable_prototype_.is_null());
|
|
DCHECK(!strict_function_map_writable_prototype_.is_null());
|
|
|
|
// Replace function instance maps to make prototype writable.
|
|
native_context()->set_sloppy_function_map(
|
|
*sloppy_function_map_writable_prototype_);
|
|
native_context()->set_strict_function_map(
|
|
*strict_function_map_writable_prototype_);
|
|
}
|
|
|
|
|
|
class NoTrackDoubleFieldsForSerializerScope {
|
|
public:
|
|
explicit NoTrackDoubleFieldsForSerializerScope(Isolate* isolate)
|
|
: flag_(FLAG_track_double_fields), enabled_(false) {
|
|
if (isolate->serializer_enabled()) {
|
|
// Disable tracking double fields because heap numbers treated as
|
|
// immutable by the serializer.
|
|
FLAG_track_double_fields = false;
|
|
enabled_ = true;
|
|
}
|
|
}
|
|
|
|
~NoTrackDoubleFieldsForSerializerScope() {
|
|
if (enabled_) {
|
|
FLAG_track_double_fields = flag_;
|
|
}
|
|
}
|
|
|
|
private:
|
|
bool flag_;
|
|
bool enabled_;
|
|
};
|
|
|
|
|
|
Genesis::Genesis(Isolate* isolate,
|
|
MaybeHandle<JSGlobalProxy> maybe_global_proxy,
|
|
v8::Handle<v8::ObjectTemplate> global_proxy_template,
|
|
v8::ExtensionConfiguration* extensions)
|
|
: isolate_(isolate),
|
|
active_(isolate->bootstrapper()) {
|
|
NoTrackDoubleFieldsForSerializerScope disable_scope(isolate);
|
|
result_ = Handle<Context>::null();
|
|
// Before creating the roots we must save the context and restore it
|
|
// on all function exits.
|
|
SaveContext saved_context(isolate);
|
|
|
|
// During genesis, the boilerplate for stack overflow won't work until the
|
|
// environment has been at least partially initialized. Add a stack check
|
|
// before entering JS code to catch overflow early.
|
|
StackLimitCheck check(isolate);
|
|
if (check.HasOverflowed()) return;
|
|
|
|
// The deserializer needs to hook up references to the global proxy.
|
|
// Create an uninitialized global proxy now if we don't have one
|
|
// and initialize it later in CreateNewGlobals.
|
|
Handle<JSGlobalProxy> global_proxy;
|
|
if (!maybe_global_proxy.ToHandle(&global_proxy)) {
|
|
global_proxy = isolate->factory()->NewUninitializedJSGlobalProxy();
|
|
}
|
|
|
|
// We can only de-serialize a context if the isolate was initialized from
|
|
// a snapshot. Otherwise we have to build the context from scratch.
|
|
// Also create a context from scratch to expose natives, if required by flag.
|
|
Handle<FixedArray> outdated_contexts;
|
|
if (!isolate->initialized_from_snapshot() ||
|
|
!Snapshot::NewContextFromSnapshot(isolate, global_proxy,
|
|
&outdated_contexts)
|
|
.ToHandle(&native_context_)) {
|
|
native_context_ = Handle<Context>();
|
|
}
|
|
|
|
if (!native_context().is_null()) {
|
|
AddToWeakNativeContextList(*native_context());
|
|
isolate->set_context(*native_context());
|
|
isolate->counters()->contexts_created_by_snapshot()->Increment();
|
|
#if TRACE_MAPS
|
|
if (FLAG_trace_maps) {
|
|
Handle<JSFunction> object_fun = isolate->object_function();
|
|
PrintF("[TraceMap: InitialMap map= %p SFI= %d_Object ]\n",
|
|
reinterpret_cast<void*>(object_fun->initial_map()),
|
|
object_fun->shared()->unique_id());
|
|
Map::TraceAllTransitions(object_fun->initial_map());
|
|
}
|
|
#endif
|
|
Handle<GlobalObject> global_object =
|
|
CreateNewGlobals(global_proxy_template, global_proxy);
|
|
|
|
HookUpGlobalProxy(global_object, global_proxy);
|
|
HookUpGlobalObject(global_object, outdated_contexts);
|
|
native_context()->builtins()->set_global_proxy(
|
|
native_context()->global_proxy());
|
|
|
|
if (!ConfigureGlobalObjects(global_proxy_template)) return;
|
|
} else {
|
|
// We get here if there was no context snapshot.
|
|
CreateRoots();
|
|
Handle<JSFunction> empty_function = CreateEmptyFunction(isolate);
|
|
CreateStrictModeFunctionMaps(empty_function);
|
|
CreateStrongModeFunctionMaps(empty_function);
|
|
Handle<GlobalObject> global_object =
|
|
CreateNewGlobals(global_proxy_template, global_proxy);
|
|
HookUpGlobalProxy(global_object, global_proxy);
|
|
InitializeGlobal(global_object, empty_function);
|
|
InstallJSFunctionResultCaches();
|
|
InitializeNormalizedMapCaches();
|
|
if (!InstallNatives()) return;
|
|
|
|
MakeFunctionInstancePrototypeWritable();
|
|
|
|
if (!ConfigureGlobalObjects(global_proxy_template)) return;
|
|
isolate->counters()->contexts_created_from_scratch()->Increment();
|
|
}
|
|
|
|
// Install experimental and extra natives. Do not include them into the
|
|
// snapshot as we should be able to turn them off at runtime. Re-installing
|
|
// them after they have already been deserialized would also fail.
|
|
if (!isolate->serializer_enabled()) {
|
|
InitializeExperimentalGlobal();
|
|
if (!InstallExperimentalNatives()) return;
|
|
if (!InstallExtraNatives()) return;
|
|
}
|
|
|
|
// The serializer cannot serialize typed arrays. Reset those typed arrays
|
|
// for each new context.
|
|
InitializeBuiltinTypedArrays();
|
|
|
|
result_ = native_context();
|
|
}
|
|
|
|
|
|
// Support for thread preemption.
|
|
|
|
// Reserve space for statics needing saving and restoring.
|
|
int Bootstrapper::ArchiveSpacePerThread() {
|
|
return sizeof(NestingCounterType);
|
|
}
|
|
|
|
|
|
// Archive statics that are thread-local.
|
|
char* Bootstrapper::ArchiveState(char* to) {
|
|
*reinterpret_cast<NestingCounterType*>(to) = nesting_;
|
|
nesting_ = 0;
|
|
return to + sizeof(NestingCounterType);
|
|
}
|
|
|
|
|
|
// Restore statics that are thread-local.
|
|
char* Bootstrapper::RestoreState(char* from) {
|
|
nesting_ = *reinterpret_cast<NestingCounterType*>(from);
|
|
return from + sizeof(NestingCounterType);
|
|
}
|
|
|
|
|
|
// Called when the top-level V8 mutex is destroyed.
|
|
void Bootstrapper::FreeThreadResources() {
|
|
DCHECK(!IsActive());
|
|
}
|
|
|
|
} } // namespace v8::internal
|