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, Cell::kValueOffset), factory->the_hole_value());
213 __ j(not_equal, miss);
217 void NamedStoreHandlerCompiler::GenerateStoreViaSetter(
218 MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder,
219 int accessor_index, int expected_arguments, Register scratch) {
220 // ----------- S t a t e -------------
221 // -- rsp[0] : return address
222 // -----------------------------------
224 FrameScope scope(masm, StackFrame::INTERNAL);
226 // Save value register, so we can restore it later.
229 if (accessor_index >= 0) {
230 DCHECK(!holder.is(scratch));
231 DCHECK(!receiver.is(scratch));
232 DCHECK(!value().is(scratch));
233 // Call the JavaScript setter with receiver and value on the stack.
234 if (map->IsJSGlobalObjectMap()) {
235 // Swap in the global receiver.
237 FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
242 ParameterCount actual(1);
243 ParameterCount expected(expected_arguments);
244 __ LoadAccessor(rdi, holder, accessor_index, ACCESSOR_SETTER);
245 __ InvokeFunction(rdi, expected, actual, CALL_FUNCTION,
248 // If we generate a global code snippet for deoptimization only, remember
249 // the place to continue after deoptimization.
250 masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset());
253 // We have to return the passed value, not the return value of the setter.
256 // Restore context register.
257 __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
263 void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
264 MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder,
265 int accessor_index, int expected_arguments, Register scratch) {
266 // ----------- S t a t e -------------
269 // -- rsp[0] : return address
270 // -----------------------------------
272 FrameScope scope(masm, StackFrame::INTERNAL);
274 if (accessor_index >= 0) {
275 DCHECK(!holder.is(scratch));
276 DCHECK(!receiver.is(scratch));
277 // Call the JavaScript getter with the receiver on the stack.
278 if (map->IsJSGlobalObjectMap()) {
279 // Swap in the global receiver.
281 FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
285 ParameterCount actual(0);
286 ParameterCount expected(expected_arguments);
287 __ LoadAccessor(rdi, holder, accessor_index, ACCESSOR_GETTER);
288 __ InvokeFunction(rdi, expected, actual, CALL_FUNCTION,
291 // If we generate a global code snippet for deoptimization only, remember
292 // the place to continue after deoptimization.
293 masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset());
296 // Restore context register.
297 __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
303 static void StoreIC_PushArgs(MacroAssembler* masm) {
304 Register receiver = StoreDescriptor::ReceiverRegister();
305 Register name = StoreDescriptor::NameRegister();
306 Register value = StoreDescriptor::ValueRegister();
308 DCHECK(!rbx.is(receiver) && !rbx.is(name) && !rbx.is(value));
310 __ PopReturnAddressTo(rbx);
314 __ PushReturnAddressFrom(rbx);
318 void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
319 // Return address is on the stack.
320 StoreIC_PushArgs(masm);
322 // Do tail-call to runtime routine.
323 ExternalReference ref(IC_Utility(IC::kStoreIC_Slow), masm->isolate());
324 __ TailCallExternalReference(ref, 3, 1);
328 void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
329 // Return address is on the stack.
330 StoreIC_PushArgs(masm);
332 // Do tail-call to runtime routine.
333 ExternalReference ref(IC_Utility(IC::kKeyedStoreIC_Slow), masm->isolate());
334 __ TailCallExternalReference(ref, 3, 1);
339 #define __ ACCESS_MASM((masm()))
342 void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label,
344 if (!label->is_unused()) {
346 __ Move(this->name(), name);
351 void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) {
352 __ Move(this->name(), name);
356 void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition,
359 Handle<WeakCell> cell = Map::WeakCellForMap(transition);
360 Register map_reg = StoreTransitionDescriptor::MapRegister();
361 DCHECK(!map_reg.is(scratch));
362 __ LoadWeakValue(map_reg, cell, miss);
363 if (transition->CanBeDeprecated()) {
364 __ movl(scratch, FieldOperand(map_reg, Map::kBitField3Offset));
365 __ andl(scratch, Immediate(Map::Deprecated::kMask));
366 __ j(not_zero, miss);
371 void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg,
376 DCHECK(!map_reg.is(scratch));
377 DCHECK(!map_reg.is(value_reg));
378 DCHECK(!value_reg.is(scratch));
379 __ LoadInstanceDescriptors(map_reg, scratch);
381 FieldOperand(scratch, DescriptorArray::GetValueOffset(descriptor)));
382 __ cmpp(value_reg, scratch);
383 __ j(not_equal, miss_label);
387 void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type,
390 Register map_reg = scratch1();
391 Register scratch = scratch2();
392 DCHECK(!value_reg.is(map_reg));
393 DCHECK(!value_reg.is(scratch));
394 __ JumpIfSmi(value_reg, miss_label);
395 HeapType::Iterator<Map> it = field_type->Classes();
398 __ movp(map_reg, FieldOperand(value_reg, HeapObject::kMapOffset));
400 __ CmpWeakValue(map_reg, Map::WeakCellForMap(it.Current()), scratch);
403 __ j(not_equal, miss_label);
406 __ j(equal, &do_store, Label::kNear);
413 Register PropertyHandlerCompiler::CheckPrototypes(
414 Register object_reg, Register holder_reg, Register scratch1,
415 Register scratch2, Handle<Name> name, Label* miss,
416 PrototypeCheckType check) {
417 Handle<Map> receiver_map = map();
419 // Make sure there's no overlap between holder and object registers.
420 DCHECK(!scratch1.is(object_reg) && !scratch1.is(holder_reg));
421 DCHECK(!scratch2.is(object_reg) && !scratch2.is(holder_reg) &&
422 !scratch2.is(scratch1));
424 // Keep track of the current object in register reg. On the first
425 // iteration, reg is an alias for object_reg, on later iterations,
426 // it is an alias for holder_reg.
427 Register reg = object_reg;
430 Handle<JSObject> current = Handle<JSObject>::null();
431 if (receiver_map->IsJSGlobalObjectMap()) {
432 current = isolate()->global_object();
434 Handle<JSObject> prototype = Handle<JSObject>::null();
435 Handle<Map> current_map = receiver_map;
436 Handle<Map> holder_map(holder()->map());
437 // Traverse the prototype chain and check the maps in the prototype chain for
438 // fast and global objects or do negative lookup for normal objects.
439 while (!current_map.is_identical_to(holder_map)) {
442 // Only global objects and objects that do not require access
443 // checks are allowed in stubs.
444 DCHECK(current_map->IsJSGlobalProxyMap() ||
445 !current_map->is_access_check_needed());
447 prototype = handle(JSObject::cast(current_map->prototype()));
448 if (current_map->is_dictionary_map() &&
449 !current_map->IsJSGlobalObjectMap()) {
450 DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
451 if (!name->IsUniqueName()) {
452 DCHECK(name->IsString());
453 name = factory()->InternalizeString(Handle<String>::cast(name));
455 DCHECK(current.is_null() ||
456 current->property_dictionary()->FindEntry(name) ==
457 NameDictionary::kNotFound);
459 GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1,
462 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
463 reg = holder_reg; // From now on the object will be in holder_reg.
464 __ movp(reg, FieldOperand(scratch1, Map::kPrototypeOffset));
466 Register map_reg = scratch1;
467 __ movp(map_reg, FieldOperand(reg, HeapObject::kMapOffset));
469 if (depth != 1 || check == CHECK_ALL_MAPS) {
470 Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
471 __ CmpWeakValue(map_reg, cell, scratch2);
472 __ j(not_equal, miss);
475 // Check access rights to the global object. This has to happen after
476 // the map check so that we know that the object is actually a global
478 // This allows us to install generated handlers for accesses to the
479 // global proxy (as opposed to using slow ICs). See corresponding code
480 // in LookupForRead().
481 if (current_map->IsJSGlobalProxyMap()) {
482 __ CheckAccessGlobalProxy(reg, scratch2, miss);
483 } else if (current_map->IsJSGlobalObjectMap()) {
484 GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current),
485 name, scratch2, miss);
487 reg = holder_reg; // From now on the object will be in holder_reg.
489 __ movp(reg, FieldOperand(map_reg, Map::kPrototypeOffset));
492 // Go to the next object in the prototype chain.
494 current_map = handle(current->map());
497 // Log the check depth.
498 LOG(isolate(), IntEvent("check-maps-depth", depth + 1));
500 if (depth != 0 || check == CHECK_ALL_MAPS) {
501 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
502 Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
503 __ CmpWeakValue(scratch1, cell, scratch2);
504 __ j(not_equal, miss);
507 // Perform security check for access to the global object.
508 DCHECK(current_map->IsJSGlobalProxyMap() ||
509 !current_map->is_access_check_needed());
510 if (current_map->IsJSGlobalProxyMap()) {
511 __ CheckAccessGlobalProxy(reg, scratch1, miss);
514 // Return the register containing the holder.
519 void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
520 if (!miss->is_unused()) {
524 if (IC::ICUseVector(kind())) {
525 DCHECK(kind() == Code::LOAD_IC);
528 TailCallBuiltin(masm(), MissBuiltin(kind()));
534 void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
535 if (!miss->is_unused()) {
538 GenerateRestoreName(miss, name);
539 TailCallBuiltin(masm(), MissBuiltin(kind()));
545 void NamedLoadHandlerCompiler::GenerateLoadCallback(
546 Register reg, Handle<ExecutableAccessorInfo> callback) {
547 // Insert additional parameters into the stack frame above return address.
548 DCHECK(!scratch4().is(reg));
549 __ PopReturnAddressTo(scratch4());
551 STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0);
552 STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1);
553 STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2);
554 STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3);
555 STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4);
556 STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5);
557 STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 6);
558 __ Push(receiver()); // receiver
559 Handle<Object> data(callback->data(), isolate());
560 if (data->IsUndefined() || data->IsSmi()) {
563 DCHECK(!scratch2().is(reg));
564 Handle<WeakCell> cell =
565 isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data));
566 // The callback is alive if this instruction is executed,
567 // so the weak cell is not cleared and points to data.
568 __ GetWeakValue(scratch2(), cell);
571 DCHECK(!kScratchRegister.is(reg));
572 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex);
573 __ Push(kScratchRegister); // return value
574 __ Push(kScratchRegister); // return value default
575 __ PushAddress(ExternalReference::isolate_address(isolate()));
576 __ Push(reg); // holder
577 __ Push(name()); // name
578 // Save a pointer to where we pushed the arguments pointer. This will be
579 // passed as the const PropertyAccessorInfo& to the C++ callback.
581 __ PushReturnAddressFrom(scratch4());
583 // Abi for CallApiGetter
584 Register api_function_address = ApiGetterDescriptor::function_address();
585 Address getter_address = v8::ToCData<Address>(callback->getter());
586 __ Move(api_function_address, getter_address, RelocInfo::EXTERNAL_REFERENCE);
588 CallApiGetterStub stub(isolate());
589 __ TailCallStub(&stub);
593 void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) {
594 // Return the constant value.
600 void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup(
601 LookupIterator* it, Register holder_reg) {
602 DCHECK(holder()->HasNamedInterceptor());
603 DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined());
605 // Compile the interceptor call, followed by inline code to load the
606 // property from further up the prototype chain if the call fails.
607 // Check that the maps haven't changed.
608 DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1()));
610 // Preserve the receiver register explicitly whenever it is different from the
611 // holder and it is needed should the interceptor return without any result.
612 // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD
613 // case might cause a miss during the prototype check.
614 bool must_perform_prototype_check =
615 !holder().is_identical_to(it->GetHolder<JSObject>());
616 bool must_preserve_receiver_reg =
617 !receiver().is(holder_reg) &&
618 (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check);
620 // Save necessary data before invoking an interceptor.
621 // Requires a frame to make GC aware of pushed pointers.
623 FrameScope frame_scope(masm(), StackFrame::INTERNAL);
625 if (must_preserve_receiver_reg) {
629 __ Push(this->name());
630 InterceptorVectorSlotPush(holder_reg);
632 // Invoke an interceptor. Note: map checks from receiver to
633 // interceptor's holder has been compiled before (see a caller
635 CompileCallLoadPropertyWithInterceptor(
636 masm(), receiver(), holder_reg, this->name(), holder(),
637 IC::kLoadPropertyWithInterceptorOnly);
639 // Check if interceptor provided a value for property. If it's
640 // the case, return immediately.
641 Label interceptor_failed;
642 __ CompareRoot(rax, Heap::kNoInterceptorResultSentinelRootIndex);
643 __ j(equal, &interceptor_failed);
644 frame_scope.GenerateLeaveFrame();
647 __ bind(&interceptor_failed);
648 InterceptorVectorSlotPop(holder_reg);
649 __ Pop(this->name());
651 if (must_preserve_receiver_reg) {
655 // Leave the internal frame.
658 GenerateLoadPostInterceptor(it, holder_reg);
662 void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) {
663 // Call the runtime system to load the interceptor.
664 DCHECK(holder()->HasNamedInterceptor());
665 DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined());
666 __ PopReturnAddressTo(scratch2());
667 PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(),
669 __ PushReturnAddressFrom(scratch2());
671 ExternalReference ref = ExternalReference(
672 IC_Utility(IC::kLoadPropertyWithInterceptor), isolate());
673 __ TailCallExternalReference(
674 ref, NamedLoadHandlerCompiler::kInterceptorArgsLength, 1);
678 Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback(
679 Handle<JSObject> object, Handle<Name> name,
680 Handle<ExecutableAccessorInfo> callback) {
681 Register holder_reg = Frontend(name);
683 __ PopReturnAddressTo(scratch1());
686 // If the callback cannot leak, then push the callback directly,
687 // otherwise wrap it in a weak cell.
688 if (callback->data()->IsUndefined() || callback->data()->IsSmi()) {
691 Handle<WeakCell> cell = isolate()->factory()->NewWeakCell(callback);
696 __ PushReturnAddressFrom(scratch1());
698 // Do tail-call to the runtime system.
699 ExternalReference store_callback_property =
700 ExternalReference(IC_Utility(IC::kStoreCallbackProperty), isolate());
701 __ TailCallExternalReference(store_callback_property, 5, 1);
703 // Return the generated code.
704 return GetCode(kind(), Code::FAST, name);
708 Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor(
710 __ PopReturnAddressTo(scratch1());
712 __ Push(this->name());
714 __ PushReturnAddressFrom(scratch1());
716 // Do tail-call to the runtime system.
717 ExternalReference store_ic_property = ExternalReference(
718 IC_Utility(IC::kStorePropertyWithInterceptor), isolate());
719 __ TailCallExternalReference(store_ic_property, 3, 1);
721 // Return the generated code.
722 return GetCode(kind(), Code::FAST, name);
726 Register NamedStoreHandlerCompiler::value() {
727 return StoreDescriptor::ValueRegister();
731 Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
732 Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) {
734 if (IC::ICUseVector(kind())) {
737 FrontendHeader(receiver(), name, &miss);
739 // Get the value from the cell.
740 Register result = StoreDescriptor::ValueRegister();
741 Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
742 __ LoadWeakValue(result, weak_cell, &miss);
743 __ movp(result, FieldOperand(result, PropertyCell::kValueOffset));
745 // Check for deleted property if property can actually be deleted.
746 if (is_configurable) {
747 __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
749 } else if (FLAG_debug_code) {
750 __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
751 __ Check(not_equal, kDontDeleteCellsCannotContainTheHole);
754 Counters* counters = isolate()->counters();
755 __ IncrementCounter(counters->named_load_global_stub(), 1);
756 if (IC::ICUseVector(kind())) {
757 DiscardVectorAndSlot();
761 FrontendFooter(name, &miss);
763 // Return the generated code.
764 return GetCode(kind(), Code::NORMAL, name);
770 } // namespace v8::internal
772 #endif // V8_TARGET_ARCH_X64