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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/bootstrapper.h" | 5 #include "src/bootstrapper.h" |
6 | 6 |
7 #include "src/accessors.h" | 7 #include "src/accessors.h" |
8 #include "src/api-natives.h" | 8 #include "src/api-natives.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/extensions/externalize-string-extension.h" | 10 #include "src/extensions/externalize-string-extension.h" |
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52 return Handle<String>::cast(cached_source); | 52 return Handle<String>::cast(cached_source); |
53 } | 53 } |
54 | 54 |
55 | 55 |
56 template Handle<String> Bootstrapper::SourceLookup<Natives>(int index); | 56 template Handle<String> Bootstrapper::SourceLookup<Natives>(int index); |
57 template Handle<String> Bootstrapper::SourceLookup<ExperimentalNatives>( | 57 template Handle<String> Bootstrapper::SourceLookup<ExperimentalNatives>( |
58 int index); | 58 int index); |
59 template Handle<String> Bootstrapper::SourceLookup<ExperimentalExtraNatives>( | 59 template Handle<String> Bootstrapper::SourceLookup<ExperimentalExtraNatives>( |
60 int index); | 60 int index); |
61 template Handle<String> Bootstrapper::SourceLookup<ExtraNatives>(int index); | 61 template Handle<String> Bootstrapper::SourceLookup<ExtraNatives>(int index); |
62 template Handle<String> Bootstrapper::SourceLookup<CodeStubNatives>(int index); | |
63 | 62 |
64 | 63 |
65 void Bootstrapper::Initialize(bool create_heap_objects) { | 64 void Bootstrapper::Initialize(bool create_heap_objects) { |
66 extensions_cache_.Initialize(isolate_, create_heap_objects); | 65 extensions_cache_.Initialize(isolate_, create_heap_objects); |
67 } | 66 } |
68 | 67 |
69 | 68 |
70 static const char* GCFunctionName() { | 69 static const char* GCFunctionName() { |
71 bool flag_given = FLAG_expose_gc_as != NULL && strlen(FLAG_expose_gc_as) != 0; | 70 bool flag_given = FLAG_expose_gc_as != NULL && strlen(FLAG_expose_gc_as) != 0; |
72 return flag_given ? FLAG_expose_gc_as : "gc"; | 71 return flag_given ? FLAG_expose_gc_as : "gc"; |
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123 } | 122 } |
124 } | 123 } |
125 | 124 |
126 | 125 |
127 void Bootstrapper::TearDown() { | 126 void Bootstrapper::TearDown() { |
128 DeleteNativeSources(Natives::GetSourceCache(isolate_->heap())); | 127 DeleteNativeSources(Natives::GetSourceCache(isolate_->heap())); |
129 DeleteNativeSources(ExperimentalNatives::GetSourceCache(isolate_->heap())); | 128 DeleteNativeSources(ExperimentalNatives::GetSourceCache(isolate_->heap())); |
130 DeleteNativeSources(ExtraNatives::GetSourceCache(isolate_->heap())); | 129 DeleteNativeSources(ExtraNatives::GetSourceCache(isolate_->heap())); |
131 DeleteNativeSources( | 130 DeleteNativeSources( |
132 ExperimentalExtraNatives::GetSourceCache(isolate_->heap())); | 131 ExperimentalExtraNatives::GetSourceCache(isolate_->heap())); |
133 DeleteNativeSources(CodeStubNatives::GetSourceCache(isolate_->heap())); | |
134 | 132 |
135 extensions_cache_.Initialize(isolate_, false); // Yes, symmetrical | 133 extensions_cache_.Initialize(isolate_, false); // Yes, symmetrical |
136 } | 134 } |
137 | 135 |
138 | 136 |
139 class Genesis BASE_EMBEDDED { | 137 class Genesis BASE_EMBEDDED { |
140 public: | 138 public: |
141 Genesis(Isolate* isolate, MaybeHandle<JSGlobalProxy> maybe_global_proxy, | 139 Genesis(Isolate* isolate, MaybeHandle<JSGlobalProxy> maybe_global_proxy, |
142 v8::Local<v8::ObjectTemplate> global_proxy_template, | 140 v8::Local<v8::ObjectTemplate> global_proxy_template, |
143 v8::ExtensionConfiguration* extensions, ContextType context_type); | 141 v8::ExtensionConfiguration* extensions, ContextType context_type); |
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332 extensions, context_type); | 330 extensions, context_type); |
333 Handle<Context> env = genesis.result(); | 331 Handle<Context> env = genesis.result(); |
334 if (env.is_null() || | 332 if (env.is_null() || |
335 (context_type != THIN_CONTEXT && !InstallExtensions(env, extensions))) { | 333 (context_type != THIN_CONTEXT && !InstallExtensions(env, extensions))) { |
336 return Handle<Context>(); | 334 return Handle<Context>(); |
337 } | 335 } |
338 return scope.CloseAndEscape(env); | 336 return scope.CloseAndEscape(env); |
339 } | 337 } |
340 | 338 |
341 | 339 |
342 bool Bootstrapper::CreateCodeStubContext(Isolate* isolate) { | |
343 HandleScope scope(isolate); | |
344 SaveContext save_context(isolate); | |
345 BootstrapperActive active(this); | |
346 | |
347 v8::ExtensionConfiguration no_extensions; | |
348 Handle<Context> native_context = CreateEnvironment( | |
349 MaybeHandle<JSGlobalProxy>(), v8::Local<v8::ObjectTemplate>(), | |
350 &no_extensions, THIN_CONTEXT); | |
351 isolate->heap()->SetRootCodeStubContext(*native_context); | |
352 isolate->set_context(*native_context); | |
353 Handle<JSObject> code_stub_exports = | |
354 isolate->factory()->NewJSObject(isolate->object_function()); | |
355 JSObject::NormalizeProperties(code_stub_exports, CLEAR_INOBJECT_PROPERTIES, 2, | |
356 "container to export to extra natives"); | |
357 isolate->heap()->SetRootCodeStubExportsObject(*code_stub_exports); | |
358 return InstallCodeStubNatives(isolate); | |
359 } | |
360 | |
361 | |
362 static void SetObjectPrototype(Handle<JSObject> object, Handle<Object> proto) { | 340 static void SetObjectPrototype(Handle<JSObject> object, Handle<Object> proto) { |
363 // object.__proto__ = proto; | 341 // object.__proto__ = proto; |
364 Handle<Map> old_map = Handle<Map>(object->map()); | 342 Handle<Map> old_map = Handle<Map>(object->map()); |
365 Handle<Map> new_map = Map::Copy(old_map, "SetObjectPrototype"); | 343 Handle<Map> new_map = Map::Copy(old_map, "SetObjectPrototype"); |
366 Map::SetPrototype(new_map, proto, FAST_PROTOTYPE); | 344 Map::SetPrototype(new_map, proto, FAST_PROTOTYPE); |
367 JSObject::MigrateToMap(object, new_map); | 345 JSObject::MigrateToMap(object, new_map); |
368 } | 346 } |
369 | 347 |
370 | 348 |
371 void Bootstrapper::DetachGlobal(Handle<Context> env) { | 349 void Bootstrapper::DetachGlobal(Handle<Context> env) { |
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1547 isolate->bootstrapper()->SourceLookup<ExperimentalExtraNatives>(index); | 1525 isolate->bootstrapper()->SourceLookup<ExperimentalExtraNatives>(index); |
1548 Handle<Object> global = isolate->global_object(); | 1526 Handle<Object> global = isolate->global_object(); |
1549 Handle<Object> binding = isolate->extras_binding_object(); | 1527 Handle<Object> binding = isolate->extras_binding_object(); |
1550 Handle<Object> extras_utils = isolate->extras_utils_object(); | 1528 Handle<Object> extras_utils = isolate->extras_utils_object(); |
1551 Handle<Object> args[] = {global, binding, extras_utils}; | 1529 Handle<Object> args[] = {global, binding, extras_utils}; |
1552 return Bootstrapper::CompileNative(isolate, name, source_code, | 1530 return Bootstrapper::CompileNative(isolate, name, source_code, |
1553 arraysize(args), args); | 1531 arraysize(args), args); |
1554 } | 1532 } |
1555 | 1533 |
1556 | 1534 |
1557 bool Bootstrapper::CompileCodeStubBuiltin(Isolate* isolate, int index) { | |
1558 HandleScope scope(isolate); | |
1559 Vector<const char> name = CodeStubNatives::GetScriptName(index); | |
1560 Handle<String> source_code = | |
1561 isolate->bootstrapper()->SourceLookup<CodeStubNatives>(index); | |
1562 Handle<JSObject> global(isolate->global_object()); | |
1563 Handle<JSObject> exports(isolate->heap()->code_stub_exports_object()); | |
1564 Handle<Object> args[] = {global, exports}; | |
1565 bool result = | |
1566 CompileNative(isolate, name, source_code, arraysize(args), args); | |
1567 return result; | |
1568 } | |
1569 | |
1570 | |
1571 bool Bootstrapper::CompileNative(Isolate* isolate, Vector<const char> name, | 1535 bool Bootstrapper::CompileNative(Isolate* isolate, Vector<const char> name, |
1572 Handle<String> source, int argc, | 1536 Handle<String> source, int argc, |
1573 Handle<Object> argv[]) { | 1537 Handle<Object> argv[]) { |
1574 SuppressDebug compiling_natives(isolate->debug()); | 1538 SuppressDebug compiling_natives(isolate->debug()); |
1575 // During genesis, the boilerplate for stack overflow won't work until the | 1539 // During genesis, the boilerplate for stack overflow won't work until the |
1576 // environment has been at least partially initialized. Add a stack check | 1540 // environment has been at least partially initialized. Add a stack check |
1577 // before entering JS code to catch overflow early. | 1541 // before entering JS code to catch overflow early. |
1578 StackLimitCheck check(isolate); | 1542 StackLimitCheck check(isolate); |
1579 if (check.JsHasOverflowed(1 * KB)) { | 1543 if (check.JsHasOverflowed(1 * KB)) { |
1580 isolate->StackOverflow(); | 1544 isolate->StackOverflow(); |
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2573 | 2537 |
2574 | 2538 |
2575 bool Genesis::InstallDebuggerNatives() { | 2539 bool Genesis::InstallDebuggerNatives() { |
2576 for (int i = 0; i < Natives::GetDebuggerCount(); ++i) { | 2540 for (int i = 0; i < Natives::GetDebuggerCount(); ++i) { |
2577 if (!Bootstrapper::CompileBuiltin(isolate(), i)) return false; | 2541 if (!Bootstrapper::CompileBuiltin(isolate(), i)) return false; |
2578 } | 2542 } |
2579 return CallUtilsFunction(isolate(), "PostDebug"); | 2543 return CallUtilsFunction(isolate(), "PostDebug"); |
2580 } | 2544 } |
2581 | 2545 |
2582 | 2546 |
2583 bool Bootstrapper::InstallCodeStubNatives(Isolate* isolate) { | |
2584 for (int i = CodeStubNatives::GetDebuggerCount(); | |
2585 i < CodeStubNatives::GetBuiltinsCount(); i++) { | |
2586 if (!CompileCodeStubBuiltin(isolate, i)) return false; | |
2587 } | |
2588 | |
2589 return true; | |
2590 } | |
2591 | |
2592 | |
2593 static void InstallBuiltinFunctionId(Handle<JSObject> holder, | 2547 static void InstallBuiltinFunctionId(Handle<JSObject> holder, |
2594 const char* function_name, | 2548 const char* function_name, |
2595 BuiltinFunctionId id) { | 2549 BuiltinFunctionId id) { |
2596 Isolate* isolate = holder->GetIsolate(); | 2550 Isolate* isolate = holder->GetIsolate(); |
2597 Handle<Object> function_object = | 2551 Handle<Object> function_object = |
2598 Object::GetProperty(isolate, holder, function_name).ToHandleChecked(); | 2552 Object::GetProperty(isolate, holder, function_name).ToHandleChecked(); |
2599 Handle<JSFunction> function = Handle<JSFunction>::cast(function_object); | 2553 Handle<JSFunction> function = Handle<JSFunction>::cast(function_object); |
2600 function->shared()->set_function_data(Smi::FromInt(id)); | 2554 function->shared()->set_function_data(Smi::FromInt(id)); |
2601 } | 2555 } |
2602 | 2556 |
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3195 } | 3149 } |
3196 | 3150 |
3197 | 3151 |
3198 // Called when the top-level V8 mutex is destroyed. | 3152 // Called when the top-level V8 mutex is destroyed. |
3199 void Bootstrapper::FreeThreadResources() { | 3153 void Bootstrapper::FreeThreadResources() { |
3200 DCHECK(!IsActive()); | 3154 DCHECK(!IsActive()); |
3201 } | 3155 } |
3202 | 3156 |
3203 } // namespace internal | 3157 } // namespace internal |
3204 } // namespace v8 | 3158 } // namespace v8 |
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