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
3 // found in the LICENSE file.
9 #include "src/ic/call-optimization.h"
10 #include "src/ic/handler-compiler.h"
11 #include "src/ic/ic.h"
16 #define __ ACCESS_MASM(masm)
18 void PropertyHandlerCompiler::PushVectorAndSlot(Register vector,
20 MacroAssembler* masm = this->masm();
26 void PropertyHandlerCompiler::PopVectorAndSlot(Register vector, Register slot) {
27 MacroAssembler* masm = this->masm();
33 void PropertyHandlerCompiler::DiscardVectorAndSlot() {
34 MacroAssembler* masm = this->masm();
35 // Remove vector and slot.
36 __ addp(rsp, Immediate(2 * kPointerSize));
40 void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup(
41 MacroAssembler* masm, Label* miss_label, Register receiver,
42 Handle<Name> name, Register scratch0, Register scratch1) {
43 DCHECK(name->IsUniqueName());
44 DCHECK(!receiver.is(scratch0));
45 Counters* counters = masm->isolate()->counters();
46 __ IncrementCounter(counters->negative_lookups(), 1);
47 __ IncrementCounter(counters->negative_lookups_miss(), 1);
49 __ movp(scratch0, FieldOperand(receiver, HeapObject::kMapOffset));
51 const int kInterceptorOrAccessCheckNeededMask =
52 (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded);
54 // Bail out if the receiver has a named interceptor or requires access checks.
55 __ testb(FieldOperand(scratch0, Map::kBitFieldOffset),
56 Immediate(kInterceptorOrAccessCheckNeededMask));
57 __ j(not_zero, miss_label);
59 // Check that receiver is a JSObject.
60 __ CmpInstanceType(scratch0, FIRST_SPEC_OBJECT_TYPE);
61 __ j(below, miss_label);
63 // Load properties array.
64 Register properties = scratch0;
65 __ movp(properties, FieldOperand(receiver, JSObject::kPropertiesOffset));
67 // Check that the properties array is a dictionary.
68 __ CompareRoot(FieldOperand(properties, HeapObject::kMapOffset),
69 Heap::kHashTableMapRootIndex);
70 __ j(not_equal, miss_label);
73 NameDictionaryLookupStub::GenerateNegativeLookup(masm, miss_label, &done,
74 properties, name, scratch1);
76 __ DecrementCounter(counters->negative_lookups_miss(), 1);
80 void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype(
81 MacroAssembler* masm, int index, Register result, Label* miss) {
82 const int offset = Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX);
83 __ movp(result, Operand(rsi, offset));
84 __ movp(result, FieldOperand(result, GlobalObject::kNativeContextOffset));
85 __ movp(result, Operand(result, Context::SlotOffset(index)));
86 // Load its initial map. The global functions all have initial maps.
88 FieldOperand(result, JSFunction::kPrototypeOrInitialMapOffset));
89 // Load the prototype from the initial map.
90 __ movp(result, FieldOperand(result, Map::kPrototypeOffset));
94 void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(
95 MacroAssembler* masm, Register receiver, Register result, Register scratch,
97 __ TryGetFunctionPrototype(receiver, result, miss_label);
98 if (!result.is(rax)) __ movp(rax, result);
103 static void PushInterceptorArguments(MacroAssembler* masm, Register receiver,
104 Register holder, Register name,
105 Handle<JSObject> holder_obj) {
106 STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex == 0);
107 STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex == 1);
108 STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex == 2);
109 STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsLength == 3);
116 static void CompileCallLoadPropertyWithInterceptor(
117 MacroAssembler* masm, Register receiver, Register holder, Register name,
118 Handle<JSObject> holder_obj, IC::UtilityId id) {
119 PushInterceptorArguments(masm, receiver, holder, name, holder_obj);
120 __ CallExternalReference(ExternalReference(IC_Utility(id), masm->isolate()),
121 NamedLoadHandlerCompiler::kInterceptorArgsLength);
125 // Generate call to api function.
126 void PropertyHandlerCompiler::GenerateApiAccessorCall(
127 MacroAssembler* masm, const CallOptimization& optimization,
128 Handle<Map> receiver_map, Register receiver, Register scratch,
129 bool is_store, Register store_parameter, Register accessor_holder,
130 int accessor_index) {
131 DCHECK(!accessor_holder.is(scratch));
132 DCHECK(optimization.is_simple_api_call());
134 __ PopReturnAddressTo(scratch);
137 // Write the arguments to stack frame.
139 DCHECK(!receiver.is(store_parameter));
140 DCHECK(!scratch.is(store_parameter));
141 __ Push(store_parameter);
143 __ PushReturnAddressFrom(scratch);
144 // Stack now matches JSFunction abi.
146 // Abi for CallApiFunctionStub.
147 Register callee = rdi;
149 Register holder = rcx;
150 Register api_function_address = rdx;
153 // Put callee in place.
154 __ LoadAccessor(callee, accessor_holder, accessor_index,
155 is_store ? ACCESSOR_SETTER : ACCESSOR_GETTER);
157 // Put holder in place.
158 CallOptimization::HolderLookup holder_lookup;
159 int holder_depth = 0;
160 optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup,
162 switch (holder_lookup) {
163 case CallOptimization::kHolderIsReceiver:
164 __ Move(holder, receiver);
166 case CallOptimization::kHolderFound:
167 __ movp(holder, FieldOperand(receiver, HeapObject::kMapOffset));
168 __ movp(holder, FieldOperand(holder, Map::kPrototypeOffset));
169 for (int i = 1; i < holder_depth; i++) {
170 __ movp(holder, FieldOperand(holder, HeapObject::kMapOffset));
171 __ movp(holder, FieldOperand(holder, Map::kPrototypeOffset));
174 case CallOptimization::kHolderNotFound:
179 Isolate* isolate = masm->isolate();
180 Handle<CallHandlerInfo> api_call_info = optimization.api_call_info();
181 bool call_data_undefined = false;
182 // Put call data in place.
183 if (api_call_info->data()->IsUndefined()) {
184 call_data_undefined = true;
185 __ LoadRoot(data, Heap::kUndefinedValueRootIndex);
187 __ movp(data, FieldOperand(callee, JSFunction::kSharedFunctionInfoOffset));
188 __ movp(data, FieldOperand(data, SharedFunctionInfo::kFunctionDataOffset));
189 __ movp(data, FieldOperand(data, FunctionTemplateInfo::kCallCodeOffset));
190 __ movp(data, FieldOperand(data, CallHandlerInfo::kDataOffset));
193 // Put api_function_address in place.
194 Address function_address = v8::ToCData<Address>(api_call_info->callback());
195 __ Move(api_function_address, function_address,
196 RelocInfo::EXTERNAL_REFERENCE);
199 CallApiAccessorStub stub(isolate, is_store, call_data_undefined);
200 __ TailCallStub(&stub);
204 void PropertyHandlerCompiler::GenerateCheckPropertyCell(
205 MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name,
206 Register scratch, Label* miss) {
207 Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
208 DCHECK(cell->value()->IsTheHole());
209 Factory* factory = masm->isolate()->factory();
210 Handle<WeakCell> weak_cell = factory->NewWeakCell(cell);
211 __ LoadWeakValue(scratch, weak_cell, miss);
212 __ Cmp(FieldOperand(scratch, PropertyCell::kValueOffset),
213 factory->the_hole_value());
214 __ j(not_equal, miss);
218 void NamedStoreHandlerCompiler::GenerateStoreViaSetter(
219 MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder,
220 int accessor_index, int expected_arguments, Register scratch) {
221 // ----------- S t a t e -------------
222 // -- rsp[0] : return address
223 // -----------------------------------
225 FrameScope scope(masm, StackFrame::INTERNAL);
227 // Save value register, so we can restore it later.
230 if (accessor_index >= 0) {
231 DCHECK(!holder.is(scratch));
232 DCHECK(!receiver.is(scratch));
233 DCHECK(!value().is(scratch));
234 // Call the JavaScript setter with receiver and value on the stack.
235 if (map->IsJSGlobalObjectMap()) {
236 // Swap in the global receiver.
238 FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
243 ParameterCount actual(1);
244 ParameterCount expected(expected_arguments);
245 __ LoadAccessor(rdi, holder, accessor_index, ACCESSOR_SETTER);
246 __ InvokeFunction(rdi, expected, actual, CALL_FUNCTION,
249 // If we generate a global code snippet for deoptimization only, remember
250 // the place to continue after deoptimization.
251 masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset());
254 // We have to return the passed value, not the return value of the setter.
257 // Restore context register.
258 __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
264 void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
265 MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder,
266 int accessor_index, int expected_arguments, Register scratch) {
267 // ----------- S t a t e -------------
270 // -- rsp[0] : return address
271 // -----------------------------------
273 FrameScope scope(masm, StackFrame::INTERNAL);
275 if (accessor_index >= 0) {
276 DCHECK(!holder.is(scratch));
277 DCHECK(!receiver.is(scratch));
278 // Call the JavaScript getter with the receiver on the stack.
279 if (map->IsJSGlobalObjectMap()) {
280 // Swap in the global receiver.
282 FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
286 ParameterCount actual(0);
287 ParameterCount expected(expected_arguments);
288 __ LoadAccessor(rdi, holder, accessor_index, ACCESSOR_GETTER);
289 __ InvokeFunction(rdi, expected, actual, CALL_FUNCTION,
292 // If we generate a global code snippet for deoptimization only, remember
293 // the place to continue after deoptimization.
294 masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset());
297 // Restore context register.
298 __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
304 static void StoreIC_PushArgs(MacroAssembler* masm) {
305 Register receiver = StoreDescriptor::ReceiverRegister();
306 Register name = StoreDescriptor::NameRegister();
307 Register value = StoreDescriptor::ValueRegister();
309 DCHECK(!rbx.is(receiver) && !rbx.is(name) && !rbx.is(value));
311 __ PopReturnAddressTo(rbx);
315 __ PushReturnAddressFrom(rbx);
319 void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
320 // Return address is on the stack.
321 StoreIC_PushArgs(masm);
323 // Do tail-call to runtime routine.
324 ExternalReference ref(IC_Utility(IC::kStoreIC_Slow), masm->isolate());
325 __ TailCallExternalReference(ref, 3, 1);
329 void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
330 // Return address is on the stack.
331 StoreIC_PushArgs(masm);
333 // Do tail-call to runtime routine.
334 ExternalReference ref(IC_Utility(IC::kKeyedStoreIC_Slow), masm->isolate());
335 __ TailCallExternalReference(ref, 3, 1);
340 #define __ ACCESS_MASM((masm()))
343 void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label,
345 if (!label->is_unused()) {
347 __ Move(this->name(), name);
352 void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) {
353 __ Move(this->name(), name);
357 void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition,
360 Handle<WeakCell> cell = Map::WeakCellForMap(transition);
361 Register map_reg = StoreTransitionDescriptor::MapRegister();
362 DCHECK(!map_reg.is(scratch));
363 __ LoadWeakValue(map_reg, cell, miss);
364 if (transition->CanBeDeprecated()) {
365 __ movl(scratch, FieldOperand(map_reg, Map::kBitField3Offset));
366 __ andl(scratch, Immediate(Map::Deprecated::kMask));
367 __ j(not_zero, miss);
372 void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg,
377 DCHECK(!map_reg.is(scratch));
378 DCHECK(!map_reg.is(value_reg));
379 DCHECK(!value_reg.is(scratch));
380 __ LoadInstanceDescriptors(map_reg, scratch);
382 FieldOperand(scratch, DescriptorArray::GetValueOffset(descriptor)));
383 __ cmpp(value_reg, scratch);
384 __ j(not_equal, miss_label);
388 void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type,
391 Register map_reg = scratch1();
392 Register scratch = scratch2();
393 DCHECK(!value_reg.is(map_reg));
394 DCHECK(!value_reg.is(scratch));
395 __ JumpIfSmi(value_reg, miss_label);
396 HeapType::Iterator<Map> it = field_type->Classes();
399 __ movp(map_reg, FieldOperand(value_reg, HeapObject::kMapOffset));
401 __ CmpWeakValue(map_reg, Map::WeakCellForMap(it.Current()), scratch);
404 __ j(not_equal, miss_label);
407 __ j(equal, &do_store, Label::kNear);
414 Register PropertyHandlerCompiler::CheckPrototypes(
415 Register object_reg, Register holder_reg, Register scratch1,
416 Register scratch2, Handle<Name> name, Label* miss,
417 PrototypeCheckType check) {
418 Handle<Map> receiver_map = map();
420 // Make sure there's no overlap between holder and object registers.
421 DCHECK(!scratch1.is(object_reg) && !scratch1.is(holder_reg));
422 DCHECK(!scratch2.is(object_reg) && !scratch2.is(holder_reg) &&
423 !scratch2.is(scratch1));
425 // Keep track of the current object in register reg. On the first
426 // iteration, reg is an alias for object_reg, on later iterations,
427 // it is an alias for holder_reg.
428 Register reg = object_reg;
431 Handle<JSObject> current = Handle<JSObject>::null();
432 if (receiver_map->IsJSGlobalObjectMap()) {
433 current = isolate()->global_object();
436 // Check access rights to the global object. This has to happen after
437 // the map check so that we know that the object is actually a global
439 // This allows us to install generated handlers for accesses to the
440 // global proxy (as opposed to using slow ICs). See corresponding code
441 // in LookupForRead().
442 if (receiver_map->IsJSGlobalProxyMap()) {
443 __ CheckAccessGlobalProxy(reg, scratch2, miss);
446 Handle<JSObject> prototype = Handle<JSObject>::null();
447 Handle<Map> current_map = receiver_map;
448 Handle<Map> holder_map(holder()->map());
449 // Traverse the prototype chain and check the maps in the prototype chain for
450 // fast and global objects or do negative lookup for normal objects.
451 while (!current_map.is_identical_to(holder_map)) {
454 // Only global objects and objects that do not require access
455 // checks are allowed in stubs.
456 DCHECK(current_map->IsJSGlobalProxyMap() ||
457 !current_map->is_access_check_needed());
459 prototype = handle(JSObject::cast(current_map->prototype()));
460 if (current_map->is_dictionary_map() &&
461 !current_map->IsJSGlobalObjectMap()) {
462 DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
463 if (!name->IsUniqueName()) {
464 DCHECK(name->IsString());
465 name = factory()->InternalizeString(Handle<String>::cast(name));
467 DCHECK(current.is_null() ||
468 current->property_dictionary()->FindEntry(name) ==
469 NameDictionary::kNotFound);
471 GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1,
474 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
475 reg = holder_reg; // From now on the object will be in holder_reg.
476 __ movp(reg, FieldOperand(scratch1, Map::kPrototypeOffset));
478 Register map_reg = scratch1;
479 __ movp(map_reg, FieldOperand(reg, HeapObject::kMapOffset));
481 if (current_map->IsJSGlobalObjectMap()) {
482 GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current),
483 name, scratch2, miss);
484 } else if (depth != 1 || check == CHECK_ALL_MAPS) {
485 Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
486 __ CmpWeakValue(map_reg, cell, scratch2);
487 __ j(not_equal, miss);
490 reg = holder_reg; // From now on the object will be in holder_reg.
492 __ movp(reg, FieldOperand(map_reg, Map::kPrototypeOffset));
495 // Go to the next object in the prototype chain.
497 current_map = handle(current->map());
500 DCHECK(!current_map->IsJSGlobalProxyMap());
502 // Log the check depth.
503 LOG(isolate(), IntEvent("check-maps-depth", depth + 1));
505 if (depth != 0 || check == CHECK_ALL_MAPS) {
506 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
507 Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
508 __ CmpWeakValue(scratch1, cell, scratch2);
509 __ j(not_equal, miss);
512 // Return the register containing the holder.
517 void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
518 if (!miss->is_unused()) {
522 if (IC::ICUseVector(kind())) {
523 DCHECK(kind() == Code::LOAD_IC);
526 TailCallBuiltin(masm(), MissBuiltin(kind()));
532 void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
533 if (!miss->is_unused()) {
536 GenerateRestoreName(miss, name);
537 TailCallBuiltin(masm(), MissBuiltin(kind()));
543 void NamedLoadHandlerCompiler::GenerateLoadCallback(
544 Register reg, Handle<ExecutableAccessorInfo> callback) {
545 // Insert additional parameters into the stack frame above return address.
546 DCHECK(!scratch4().is(reg));
547 __ PopReturnAddressTo(scratch4());
549 STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0);
550 STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1);
551 STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2);
552 STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3);
553 STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4);
554 STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5);
555 STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 6);
556 __ Push(receiver()); // receiver
557 Handle<Object> data(callback->data(), isolate());
558 if (data->IsUndefined() || data->IsSmi()) {
561 DCHECK(!scratch2().is(reg));
562 Handle<WeakCell> cell =
563 isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data));
564 // The callback is alive if this instruction is executed,
565 // so the weak cell is not cleared and points to data.
566 __ GetWeakValue(scratch2(), cell);
569 DCHECK(!kScratchRegister.is(reg));
570 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex);
571 __ Push(kScratchRegister); // return value
572 __ Push(kScratchRegister); // return value default
573 __ PushAddress(ExternalReference::isolate_address(isolate()));
574 __ Push(reg); // holder
575 __ Push(name()); // name
576 // Save a pointer to where we pushed the arguments pointer. This will be
577 // passed as the const PropertyAccessorInfo& to the C++ callback.
579 __ PushReturnAddressFrom(scratch4());
581 // Abi for CallApiGetter
582 Register api_function_address = ApiGetterDescriptor::function_address();
583 Address getter_address = v8::ToCData<Address>(callback->getter());
584 __ Move(api_function_address, getter_address, RelocInfo::EXTERNAL_REFERENCE);
586 CallApiGetterStub stub(isolate());
587 __ TailCallStub(&stub);
591 void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) {
592 // Return the constant value.
598 void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup(
599 LookupIterator* it, Register holder_reg) {
600 DCHECK(holder()->HasNamedInterceptor());
601 DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined());
603 // Compile the interceptor call, followed by inline code to load the
604 // property from further up the prototype chain if the call fails.
605 // Check that the maps haven't changed.
606 DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1()));
608 // Preserve the receiver register explicitly whenever it is different from the
609 // holder and it is needed should the interceptor return without any result.
610 // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD
611 // case might cause a miss during the prototype check.
612 bool must_perform_prototype_check =
613 !holder().is_identical_to(it->GetHolder<JSObject>());
614 bool must_preserve_receiver_reg =
615 !receiver().is(holder_reg) &&
616 (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check);
618 // Save necessary data before invoking an interceptor.
619 // Requires a frame to make GC aware of pushed pointers.
621 FrameScope frame_scope(masm(), StackFrame::INTERNAL);
623 if (must_preserve_receiver_reg) {
627 __ Push(this->name());
628 InterceptorVectorSlotPush(holder_reg);
630 // Invoke an interceptor. Note: map checks from receiver to
631 // interceptor's holder has been compiled before (see a caller
633 CompileCallLoadPropertyWithInterceptor(
634 masm(), receiver(), holder_reg, this->name(), holder(),
635 IC::kLoadPropertyWithInterceptorOnly);
637 // Check if interceptor provided a value for property. If it's
638 // the case, return immediately.
639 Label interceptor_failed;
640 __ CompareRoot(rax, Heap::kNoInterceptorResultSentinelRootIndex);
641 __ j(equal, &interceptor_failed);
642 frame_scope.GenerateLeaveFrame();
645 __ bind(&interceptor_failed);
646 InterceptorVectorSlotPop(holder_reg);
647 __ Pop(this->name());
649 if (must_preserve_receiver_reg) {
653 // Leave the internal frame.
656 GenerateLoadPostInterceptor(it, holder_reg);
660 void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) {
661 // Call the runtime system to load the interceptor.
662 DCHECK(holder()->HasNamedInterceptor());
663 DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined());
664 __ PopReturnAddressTo(scratch2());
665 PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(),
667 __ PushReturnAddressFrom(scratch2());
669 ExternalReference ref = ExternalReference(
670 IC_Utility(IC::kLoadPropertyWithInterceptor), isolate());
671 __ TailCallExternalReference(
672 ref, NamedLoadHandlerCompiler::kInterceptorArgsLength, 1);
676 Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback(
677 Handle<JSObject> object, Handle<Name> name,
678 Handle<ExecutableAccessorInfo> callback) {
679 Register holder_reg = Frontend(name);
681 __ PopReturnAddressTo(scratch1());
684 // If the callback cannot leak, then push the callback directly,
685 // otherwise wrap it in a weak cell.
686 if (callback->data()->IsUndefined() || callback->data()->IsSmi()) {
689 Handle<WeakCell> cell = isolate()->factory()->NewWeakCell(callback);
694 __ PushReturnAddressFrom(scratch1());
696 // Do tail-call to the runtime system.
697 ExternalReference store_callback_property =
698 ExternalReference(IC_Utility(IC::kStoreCallbackProperty), isolate());
699 __ TailCallExternalReference(store_callback_property, 5, 1);
701 // Return the generated code.
702 return GetCode(kind(), Code::FAST, name);
706 Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor(
708 __ PopReturnAddressTo(scratch1());
710 __ Push(this->name());
712 __ PushReturnAddressFrom(scratch1());
714 // Do tail-call to the runtime system.
715 ExternalReference store_ic_property = ExternalReference(
716 IC_Utility(IC::kStorePropertyWithInterceptor), isolate());
717 __ TailCallExternalReference(store_ic_property, 3, 1);
719 // Return the generated code.
720 return GetCode(kind(), Code::FAST, name);
724 Register NamedStoreHandlerCompiler::value() {
725 return StoreDescriptor::ValueRegister();
729 Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
730 Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) {
732 if (IC::ICUseVector(kind())) {
735 FrontendHeader(receiver(), name, &miss);
737 // Get the value from the cell.
738 Register result = StoreDescriptor::ValueRegister();
739 Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
740 __ LoadWeakValue(result, weak_cell, &miss);
741 __ movp(result, FieldOperand(result, PropertyCell::kValueOffset));
743 // Check for deleted property if property can actually be deleted.
744 if (is_configurable) {
745 __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
747 } else if (FLAG_debug_code) {
748 __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
749 __ Check(not_equal, kDontDeleteCellsCannotContainTheHole);
752 Counters* counters = isolate()->counters();
753 __ IncrementCounter(counters->named_load_global_stub(), 1);
754 if (IC::ICUseVector(kind())) {
755 DiscardVectorAndSlot();
759 FrontendFooter(name, &miss);
761 // Return the generated code.
762 return GetCode(kind(), Code::NORMAL, name);
768 } // namespace v8::internal
770 #endif // V8_TARGET_ARCH_X64