Upgrade to 3.29
Update V8 to 3.29.88.17 and update makefiles to support building on
all the relevant platforms.
Bug: 17370214
Change-Id: Ia3407c157fd8d72a93e23d8318ccaf6ecf77fa4e
diff --git a/src/ic/x64/handler-compiler-x64.cc b/src/ic/x64/handler-compiler-x64.cc
new file mode 100644
index 0000000..c4d6ecf
--- /dev/null
+++ b/src/ic/x64/handler-compiler-x64.cc
@@ -0,0 +1,835 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/v8.h"
+
+#if V8_TARGET_ARCH_X64
+
+#include "src/ic/call-optimization.h"
+#include "src/ic/handler-compiler.h"
+#include "src/ic/ic.h"
+
+namespace v8 {
+namespace internal {
+
+#define __ ACCESS_MASM(masm)
+
+void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup(
+ MacroAssembler* masm, Label* miss_label, Register receiver,
+ Handle<Name> name, Register scratch0, Register scratch1) {
+ DCHECK(name->IsUniqueName());
+ DCHECK(!receiver.is(scratch0));
+ Counters* counters = masm->isolate()->counters();
+ __ IncrementCounter(counters->negative_lookups(), 1);
+ __ IncrementCounter(counters->negative_lookups_miss(), 1);
+
+ __ movp(scratch0, FieldOperand(receiver, HeapObject::kMapOffset));
+
+ const int kInterceptorOrAccessCheckNeededMask =
+ (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded);
+
+ // Bail out if the receiver has a named interceptor or requires access checks.
+ __ testb(FieldOperand(scratch0, Map::kBitFieldOffset),
+ Immediate(kInterceptorOrAccessCheckNeededMask));
+ __ j(not_zero, miss_label);
+
+ // Check that receiver is a JSObject.
+ __ CmpInstanceType(scratch0, FIRST_SPEC_OBJECT_TYPE);
+ __ j(below, miss_label);
+
+ // Load properties array.
+ Register properties = scratch0;
+ __ movp(properties, FieldOperand(receiver, JSObject::kPropertiesOffset));
+
+ // Check that the properties array is a dictionary.
+ __ CompareRoot(FieldOperand(properties, HeapObject::kMapOffset),
+ Heap::kHashTableMapRootIndex);
+ __ j(not_equal, miss_label);
+
+ Label done;
+ NameDictionaryLookupStub::GenerateNegativeLookup(masm, miss_label, &done,
+ properties, name, scratch1);
+ __ bind(&done);
+ __ DecrementCounter(counters->negative_lookups_miss(), 1);
+}
+
+
+void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype(
+ MacroAssembler* masm, int index, Register prototype, Label* miss) {
+ Isolate* isolate = masm->isolate();
+ // Get the global function with the given index.
+ Handle<JSFunction> function(
+ JSFunction::cast(isolate->native_context()->get(index)));
+
+ // Check we're still in the same context.
+ Register scratch = prototype;
+ const int offset = Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX);
+ __ movp(scratch, Operand(rsi, offset));
+ __ movp(scratch, FieldOperand(scratch, GlobalObject::kNativeContextOffset));
+ __ Cmp(Operand(scratch, Context::SlotOffset(index)), function);
+ __ j(not_equal, miss);
+
+ // Load its initial map. The global functions all have initial maps.
+ __ Move(prototype, Handle<Map>(function->initial_map()));
+ // Load the prototype from the initial map.
+ __ movp(prototype, FieldOperand(prototype, Map::kPrototypeOffset));
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(
+ MacroAssembler* masm, Register receiver, Register result, Register scratch,
+ Label* miss_label) {
+ __ TryGetFunctionPrototype(receiver, result, miss_label);
+ if (!result.is(rax)) __ movp(rax, result);
+ __ ret(0);
+}
+
+
+static void PushInterceptorArguments(MacroAssembler* masm, Register receiver,
+ Register holder, Register name,
+ Handle<JSObject> holder_obj) {
+ STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex == 0);
+ STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsInfoIndex == 1);
+ STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex == 2);
+ STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex == 3);
+ STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsLength == 4);
+ __ Push(name);
+ Handle<InterceptorInfo> interceptor(holder_obj->GetNamedInterceptor());
+ DCHECK(!masm->isolate()->heap()->InNewSpace(*interceptor));
+ __ Move(kScratchRegister, interceptor);
+ __ Push(kScratchRegister);
+ __ Push(receiver);
+ __ Push(holder);
+}
+
+
+static void CompileCallLoadPropertyWithInterceptor(
+ MacroAssembler* masm, Register receiver, Register holder, Register name,
+ Handle<JSObject> holder_obj, IC::UtilityId id) {
+ PushInterceptorArguments(masm, receiver, holder, name, holder_obj);
+ __ CallExternalReference(ExternalReference(IC_Utility(id), masm->isolate()),
+ NamedLoadHandlerCompiler::kInterceptorArgsLength);
+}
+
+
+// Generate call to api function.
+void PropertyHandlerCompiler::GenerateFastApiCall(
+ MacroAssembler* masm, const CallOptimization& optimization,
+ Handle<Map> receiver_map, Register receiver, Register scratch_in,
+ bool is_store, int argc, Register* values) {
+ DCHECK(optimization.is_simple_api_call());
+
+ __ PopReturnAddressTo(scratch_in);
+ // receiver
+ __ Push(receiver);
+ // Write the arguments to stack frame.
+ for (int i = 0; i < argc; i++) {
+ Register arg = values[argc - 1 - i];
+ DCHECK(!receiver.is(arg));
+ DCHECK(!scratch_in.is(arg));
+ __ Push(arg);
+ }
+ __ PushReturnAddressFrom(scratch_in);
+ // Stack now matches JSFunction abi.
+
+ // Abi for CallApiFunctionStub.
+ Register callee = rax;
+ Register call_data = rbx;
+ Register holder = rcx;
+ Register api_function_address = rdx;
+ Register scratch = rdi; // scratch_in is no longer valid.
+
+ // Put holder in place.
+ CallOptimization::HolderLookup holder_lookup;
+ Handle<JSObject> api_holder =
+ optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup);
+ switch (holder_lookup) {
+ case CallOptimization::kHolderIsReceiver:
+ __ Move(holder, receiver);
+ break;
+ case CallOptimization::kHolderFound:
+ __ Move(holder, api_holder);
+ break;
+ case CallOptimization::kHolderNotFound:
+ UNREACHABLE();
+ break;
+ }
+
+ Isolate* isolate = masm->isolate();
+ Handle<JSFunction> function = optimization.constant_function();
+ Handle<CallHandlerInfo> api_call_info = optimization.api_call_info();
+ Handle<Object> call_data_obj(api_call_info->data(), isolate);
+
+ // Put callee in place.
+ __ Move(callee, function);
+
+ bool call_data_undefined = false;
+ // Put call_data in place.
+ if (isolate->heap()->InNewSpace(*call_data_obj)) {
+ __ Move(scratch, api_call_info);
+ __ movp(call_data, FieldOperand(scratch, CallHandlerInfo::kDataOffset));
+ } else if (call_data_obj->IsUndefined()) {
+ call_data_undefined = true;
+ __ LoadRoot(call_data, Heap::kUndefinedValueRootIndex);
+ } else {
+ __ Move(call_data, call_data_obj);
+ }
+
+ // Put api_function_address in place.
+ Address function_address = v8::ToCData<Address>(api_call_info->callback());
+ __ Move(api_function_address, function_address,
+ RelocInfo::EXTERNAL_REFERENCE);
+
+ // Jump to stub.
+ CallApiFunctionStub stub(isolate, is_store, call_data_undefined, argc);
+ __ TailCallStub(&stub);
+}
+
+
+void PropertyHandlerCompiler::GenerateCheckPropertyCell(
+ MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name,
+ Register scratch, Label* miss) {
+ Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
+ DCHECK(cell->value()->IsTheHole());
+ __ Move(scratch, cell);
+ __ Cmp(FieldOperand(scratch, Cell::kValueOffset),
+ masm->isolate()->factory()->the_hole_value());
+ __ j(not_equal, miss);
+}
+
+
+void NamedStoreHandlerCompiler::GenerateStoreViaSetter(
+ MacroAssembler* masm, Handle<HeapType> type, Register receiver,
+ Handle<JSFunction> setter) {
+ // ----------- S t a t e -------------
+ // -- rsp[0] : return address
+ // -----------------------------------
+ {
+ FrameScope scope(masm, StackFrame::INTERNAL);
+
+ // Save value register, so we can restore it later.
+ __ Push(value());
+
+ if (!setter.is_null()) {
+ // Call the JavaScript setter with receiver and value on the stack.
+ if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
+ // Swap in the global receiver.
+ __ movp(receiver,
+ FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
+ }
+ __ Push(receiver);
+ __ Push(value());
+ ParameterCount actual(1);
+ ParameterCount expected(setter);
+ __ InvokeFunction(setter, expected, actual, CALL_FUNCTION,
+ NullCallWrapper());
+ } else {
+ // If we generate a global code snippet for deoptimization only, remember
+ // the place to continue after deoptimization.
+ masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset());
+ }
+
+ // We have to return the passed value, not the return value of the setter.
+ __ Pop(rax);
+
+ // Restore context register.
+ __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
+ }
+ __ ret(0);
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
+ MacroAssembler* masm, Handle<HeapType> type, Register receiver,
+ Handle<JSFunction> getter) {
+ // ----------- S t a t e -------------
+ // -- rax : receiver
+ // -- rcx : name
+ // -- rsp[0] : return address
+ // -----------------------------------
+ {
+ FrameScope scope(masm, StackFrame::INTERNAL);
+
+ if (!getter.is_null()) {
+ // Call the JavaScript getter with the receiver on the stack.
+ if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
+ // Swap in the global receiver.
+ __ movp(receiver,
+ FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
+ }
+ __ Push(receiver);
+ ParameterCount actual(0);
+ ParameterCount expected(getter);
+ __ InvokeFunction(getter, expected, actual, CALL_FUNCTION,
+ NullCallWrapper());
+ } else {
+ // If we generate a global code snippet for deoptimization only, remember
+ // the place to continue after deoptimization.
+ masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset());
+ }
+
+ // Restore context register.
+ __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
+ }
+ __ ret(0);
+}
+
+
+static void StoreIC_PushArgs(MacroAssembler* masm) {
+ Register receiver = StoreDescriptor::ReceiverRegister();
+ Register name = StoreDescriptor::NameRegister();
+ Register value = StoreDescriptor::ValueRegister();
+
+ DCHECK(!rbx.is(receiver) && !rbx.is(name) && !rbx.is(value));
+
+ __ PopReturnAddressTo(rbx);
+ __ Push(receiver);
+ __ Push(name);
+ __ Push(value);
+ __ PushReturnAddressFrom(rbx);
+}
+
+
+void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
+ // Return address is on the stack.
+ StoreIC_PushArgs(masm);
+
+ // Do tail-call to runtime routine.
+ ExternalReference ref(IC_Utility(IC::kStoreIC_Slow), masm->isolate());
+ __ TailCallExternalReference(ref, 3, 1);
+}
+
+
+void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
+ // Return address is on the stack.
+ StoreIC_PushArgs(masm);
+
+ // Do tail-call to runtime routine.
+ ExternalReference ref(IC_Utility(IC::kKeyedStoreIC_Slow), masm->isolate());
+ __ TailCallExternalReference(ref, 3, 1);
+}
+
+
+#undef __
+#define __ ACCESS_MASM((masm()))
+
+
+void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label,
+ Handle<Name> name) {
+ if (!label->is_unused()) {
+ __ bind(label);
+ __ Move(this->name(), name);
+ }
+}
+
+
+// Receiver_reg is preserved on jumps to miss_label, but may be destroyed if
+// store is successful.
+void NamedStoreHandlerCompiler::GenerateStoreTransition(
+ Handle<Map> transition, Handle<Name> name, Register receiver_reg,
+ Register storage_reg, Register value_reg, Register scratch1,
+ Register scratch2, Register unused, Label* miss_label, Label* slow) {
+ int descriptor = transition->LastAdded();
+ DescriptorArray* descriptors = transition->instance_descriptors();
+ PropertyDetails details = descriptors->GetDetails(descriptor);
+ Representation representation = details.representation();
+ DCHECK(!representation.IsNone());
+
+ if (details.type() == CONSTANT) {
+ Handle<Object> constant(descriptors->GetValue(descriptor), isolate());
+ __ Cmp(value_reg, constant);
+ __ j(not_equal, miss_label);
+ } else if (representation.IsSmi()) {
+ __ JumpIfNotSmi(value_reg, miss_label);
+ } else if (representation.IsHeapObject()) {
+ __ JumpIfSmi(value_reg, miss_label);
+ HeapType* field_type = descriptors->GetFieldType(descriptor);
+ HeapType::Iterator<Map> it = field_type->Classes();
+ if (!it.Done()) {
+ Label do_store;
+ while (true) {
+ __ CompareMap(value_reg, it.Current());
+ it.Advance();
+ if (it.Done()) {
+ __ j(not_equal, miss_label);
+ break;
+ }
+ __ j(equal, &do_store, Label::kNear);
+ }
+ __ bind(&do_store);
+ }
+ } else if (representation.IsDouble()) {
+ Label do_store, heap_number;
+ __ AllocateHeapNumber(storage_reg, scratch1, slow, MUTABLE);
+
+ __ JumpIfNotSmi(value_reg, &heap_number);
+ __ SmiToInteger32(scratch1, value_reg);
+ __ Cvtlsi2sd(xmm0, scratch1);
+ __ jmp(&do_store);
+
+ __ bind(&heap_number);
+ __ CheckMap(value_reg, isolate()->factory()->heap_number_map(), miss_label,
+ DONT_DO_SMI_CHECK);
+ __ movsd(xmm0, FieldOperand(value_reg, HeapNumber::kValueOffset));
+
+ __ bind(&do_store);
+ __ movsd(FieldOperand(storage_reg, HeapNumber::kValueOffset), xmm0);
+ }
+
+ // Stub never generated for objects that require access checks.
+ DCHECK(!transition->is_access_check_needed());
+
+ // Perform map transition for the receiver if necessary.
+ if (details.type() == FIELD &&
+ Map::cast(transition->GetBackPointer())->unused_property_fields() == 0) {
+ // The properties must be extended before we can store the value.
+ // We jump to a runtime call that extends the properties array.
+ __ PopReturnAddressTo(scratch1);
+ __ Push(receiver_reg);
+ __ Push(transition);
+ __ Push(value_reg);
+ __ PushReturnAddressFrom(scratch1);
+ __ TailCallExternalReference(
+ ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage),
+ isolate()),
+ 3, 1);
+ return;
+ }
+
+ // Update the map of the object.
+ __ Move(scratch1, transition);
+ __ movp(FieldOperand(receiver_reg, HeapObject::kMapOffset), scratch1);
+
+ // Update the write barrier for the map field.
+ __ RecordWriteField(receiver_reg, HeapObject::kMapOffset, scratch1, scratch2,
+ kDontSaveFPRegs, OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
+
+ if (details.type() == CONSTANT) {
+ DCHECK(value_reg.is(rax));
+ __ ret(0);
+ return;
+ }
+
+ int index = transition->instance_descriptors()->GetFieldIndex(
+ transition->LastAdded());
+
+ // Adjust for the number of properties stored in the object. Even in the
+ // face of a transition we can use the old map here because the size of the
+ // object and the number of in-object properties is not going to change.
+ index -= transition->inobject_properties();
+
+ // TODO(verwaest): Share this code as a code stub.
+ SmiCheck smi_check =
+ representation.IsTagged() ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
+ if (index < 0) {
+ // Set the property straight into the object.
+ int offset = transition->instance_size() + (index * kPointerSize);
+ if (representation.IsDouble()) {
+ __ movp(FieldOperand(receiver_reg, offset), storage_reg);
+ } else {
+ __ movp(FieldOperand(receiver_reg, offset), value_reg);
+ }
+
+ if (!representation.IsSmi()) {
+ // Update the write barrier for the array address.
+ if (!representation.IsDouble()) {
+ __ movp(storage_reg, value_reg);
+ }
+ __ RecordWriteField(receiver_reg, offset, storage_reg, scratch1,
+ kDontSaveFPRegs, EMIT_REMEMBERED_SET, smi_check);
+ }
+ } else {
+ // Write to the properties array.
+ int offset = index * kPointerSize + FixedArray::kHeaderSize;
+ // Get the properties array (optimistically).
+ __ movp(scratch1, FieldOperand(receiver_reg, JSObject::kPropertiesOffset));
+ if (representation.IsDouble()) {
+ __ movp(FieldOperand(scratch1, offset), storage_reg);
+ } else {
+ __ movp(FieldOperand(scratch1, offset), value_reg);
+ }
+
+ if (!representation.IsSmi()) {
+ // Update the write barrier for the array address.
+ if (!representation.IsDouble()) {
+ __ movp(storage_reg, value_reg);
+ }
+ __ RecordWriteField(scratch1, offset, storage_reg, receiver_reg,
+ kDontSaveFPRegs, EMIT_REMEMBERED_SET, smi_check);
+ }
+ }
+
+ // Return the value (register rax).
+ DCHECK(value_reg.is(rax));
+ __ ret(0);
+}
+
+
+void NamedStoreHandlerCompiler::GenerateStoreField(LookupIterator* lookup,
+ Register value_reg,
+ Label* miss_label) {
+ DCHECK(lookup->representation().IsHeapObject());
+ __ JumpIfSmi(value_reg, miss_label);
+ HeapType::Iterator<Map> it = lookup->GetFieldType()->Classes();
+ Label do_store;
+ while (true) {
+ __ CompareMap(value_reg, it.Current());
+ it.Advance();
+ if (it.Done()) {
+ __ j(not_equal, miss_label);
+ break;
+ }
+ __ j(equal, &do_store, Label::kNear);
+ }
+ __ bind(&do_store);
+
+ StoreFieldStub stub(isolate(), lookup->GetFieldIndex(),
+ lookup->representation());
+ GenerateTailCall(masm(), stub.GetCode());
+}
+
+
+Register PropertyHandlerCompiler::CheckPrototypes(
+ Register object_reg, Register holder_reg, Register scratch1,
+ Register scratch2, Handle<Name> name, Label* miss,
+ PrototypeCheckType check) {
+ Handle<Map> receiver_map(IC::TypeToMap(*type(), isolate()));
+
+ // Make sure there's no overlap between holder and object registers.
+ DCHECK(!scratch1.is(object_reg) && !scratch1.is(holder_reg));
+ DCHECK(!scratch2.is(object_reg) && !scratch2.is(holder_reg) &&
+ !scratch2.is(scratch1));
+
+ // Keep track of the current object in register reg. On the first
+ // iteration, reg is an alias for object_reg, on later iterations,
+ // it is an alias for holder_reg.
+ Register reg = object_reg;
+ int depth = 0;
+
+ Handle<JSObject> current = Handle<JSObject>::null();
+ if (type()->IsConstant()) {
+ current = Handle<JSObject>::cast(type()->AsConstant()->Value());
+ }
+ Handle<JSObject> prototype = Handle<JSObject>::null();
+ Handle<Map> current_map = receiver_map;
+ Handle<Map> holder_map(holder()->map());
+ // Traverse the prototype chain and check the maps in the prototype chain for
+ // fast and global objects or do negative lookup for normal objects.
+ while (!current_map.is_identical_to(holder_map)) {
+ ++depth;
+
+ // Only global objects and objects that do not require access
+ // checks are allowed in stubs.
+ DCHECK(current_map->IsJSGlobalProxyMap() ||
+ !current_map->is_access_check_needed());
+
+ prototype = handle(JSObject::cast(current_map->prototype()));
+ if (current_map->is_dictionary_map() &&
+ !current_map->IsJSGlobalObjectMap()) {
+ DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast.
+ if (!name->IsUniqueName()) {
+ DCHECK(name->IsString());
+ name = factory()->InternalizeString(Handle<String>::cast(name));
+ }
+ DCHECK(current.is_null() ||
+ current->property_dictionary()->FindEntry(name) ==
+ NameDictionary::kNotFound);
+
+ GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1,
+ scratch2);
+
+ __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
+ reg = holder_reg; // From now on the object will be in holder_reg.
+ __ movp(reg, FieldOperand(scratch1, Map::kPrototypeOffset));
+ } else {
+ bool in_new_space = heap()->InNewSpace(*prototype);
+ // Two possible reasons for loading the prototype from the map:
+ // (1) Can't store references to new space in code.
+ // (2) Handler is shared for all receivers with the same prototype
+ // map (but not necessarily the same prototype instance).
+ bool load_prototype_from_map = in_new_space || depth == 1;
+ if (load_prototype_from_map) {
+ // Save the map in scratch1 for later.
+ __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
+ }
+ if (depth != 1 || check == CHECK_ALL_MAPS) {
+ __ CheckMap(reg, current_map, miss, DONT_DO_SMI_CHECK);
+ }
+
+ // Check access rights to the global object. This has to happen after
+ // the map check so that we know that the object is actually a global
+ // object.
+ // This allows us to install generated handlers for accesses to the
+ // global proxy (as opposed to using slow ICs). See corresponding code
+ // in LookupForRead().
+ if (current_map->IsJSGlobalProxyMap()) {
+ __ CheckAccessGlobalProxy(reg, scratch2, miss);
+ } else if (current_map->IsJSGlobalObjectMap()) {
+ GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current),
+ name, scratch2, miss);
+ }
+ reg = holder_reg; // From now on the object will be in holder_reg.
+
+ if (load_prototype_from_map) {
+ __ movp(reg, FieldOperand(scratch1, Map::kPrototypeOffset));
+ } else {
+ __ Move(reg, prototype);
+ }
+ }
+
+ // Go to the next object in the prototype chain.
+ current = prototype;
+ current_map = handle(current->map());
+ }
+
+ // Log the check depth.
+ LOG(isolate(), IntEvent("check-maps-depth", depth + 1));
+
+ if (depth != 0 || check == CHECK_ALL_MAPS) {
+ // Check the holder map.
+ __ CheckMap(reg, current_map, miss, DONT_DO_SMI_CHECK);
+ }
+
+ // Perform security check for access to the global object.
+ DCHECK(current_map->IsJSGlobalProxyMap() ||
+ !current_map->is_access_check_needed());
+ if (current_map->IsJSGlobalProxyMap()) {
+ __ CheckAccessGlobalProxy(reg, scratch1, miss);
+ }
+
+ // Return the register containing the holder.
+ return reg;
+}
+
+
+void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
+ if (!miss->is_unused()) {
+ Label success;
+ __ jmp(&success);
+ __ bind(miss);
+ TailCallBuiltin(masm(), MissBuiltin(kind()));
+ __ bind(&success);
+ }
+}
+
+
+void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
+ if (!miss->is_unused()) {
+ Label success;
+ __ jmp(&success);
+ GenerateRestoreName(miss, name);
+ TailCallBuiltin(masm(), MissBuiltin(kind()));
+ __ bind(&success);
+ }
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadCallback(
+ Register reg, Handle<ExecutableAccessorInfo> callback) {
+ // Insert additional parameters into the stack frame above return address.
+ DCHECK(!scratch4().is(reg));
+ __ PopReturnAddressTo(scratch4());
+
+ STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0);
+ STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1);
+ STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2);
+ STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3);
+ STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4);
+ STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5);
+ STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 6);
+ __ Push(receiver()); // receiver
+ if (heap()->InNewSpace(callback->data())) {
+ DCHECK(!scratch2().is(reg));
+ __ Move(scratch2(), callback);
+ __ Push(FieldOperand(scratch2(),
+ ExecutableAccessorInfo::kDataOffset)); // data
+ } else {
+ __ Push(Handle<Object>(callback->data(), isolate()));
+ }
+ DCHECK(!kScratchRegister.is(reg));
+ __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex);
+ __ Push(kScratchRegister); // return value
+ __ Push(kScratchRegister); // return value default
+ __ PushAddress(ExternalReference::isolate_address(isolate()));
+ __ Push(reg); // holder
+ __ Push(name()); // name
+ // Save a pointer to where we pushed the arguments pointer. This will be
+ // passed as the const PropertyAccessorInfo& to the C++ callback.
+
+ __ PushReturnAddressFrom(scratch4());
+
+ // Abi for CallApiGetter
+ Register api_function_address = ApiGetterDescriptor::function_address();
+ Address getter_address = v8::ToCData<Address>(callback->getter());
+ __ Move(api_function_address, getter_address, RelocInfo::EXTERNAL_REFERENCE);
+
+ CallApiGetterStub stub(isolate());
+ __ TailCallStub(&stub);
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) {
+ // Return the constant value.
+ __ Move(rax, value);
+ __ ret(0);
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup(
+ LookupIterator* it, Register holder_reg) {
+ DCHECK(holder()->HasNamedInterceptor());
+ DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined());
+
+ // Compile the interceptor call, followed by inline code to load the
+ // property from further up the prototype chain if the call fails.
+ // Check that the maps haven't changed.
+ DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1()));
+
+ // Preserve the receiver register explicitly whenever it is different from the
+ // holder and it is needed should the interceptor return without any result.
+ // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD
+ // case might cause a miss during the prototype check.
+ bool must_perform_prototype_check =
+ !holder().is_identical_to(it->GetHolder<JSObject>());
+ bool must_preserve_receiver_reg =
+ !receiver().is(holder_reg) &&
+ (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check);
+
+ // Save necessary data before invoking an interceptor.
+ // Requires a frame to make GC aware of pushed pointers.
+ {
+ FrameScope frame_scope(masm(), StackFrame::INTERNAL);
+
+ if (must_preserve_receiver_reg) {
+ __ Push(receiver());
+ }
+ __ Push(holder_reg);
+ __ Push(this->name());
+
+ // Invoke an interceptor. Note: map checks from receiver to
+ // interceptor's holder has been compiled before (see a caller
+ // of this method.)
+ CompileCallLoadPropertyWithInterceptor(
+ masm(), receiver(), holder_reg, this->name(), holder(),
+ IC::kLoadPropertyWithInterceptorOnly);
+
+ // Check if interceptor provided a value for property. If it's
+ // the case, return immediately.
+ Label interceptor_failed;
+ __ CompareRoot(rax, Heap::kNoInterceptorResultSentinelRootIndex);
+ __ j(equal, &interceptor_failed);
+ frame_scope.GenerateLeaveFrame();
+ __ ret(0);
+
+ __ bind(&interceptor_failed);
+ __ Pop(this->name());
+ __ Pop(holder_reg);
+ if (must_preserve_receiver_reg) {
+ __ Pop(receiver());
+ }
+
+ // Leave the internal frame.
+ }
+
+ GenerateLoadPostInterceptor(it, holder_reg);
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) {
+ // Call the runtime system to load the interceptor.
+ DCHECK(holder()->HasNamedInterceptor());
+ DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined());
+ __ PopReturnAddressTo(scratch2());
+ PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(),
+ holder());
+ __ PushReturnAddressFrom(scratch2());
+
+ ExternalReference ref = ExternalReference(
+ IC_Utility(IC::kLoadPropertyWithInterceptor), isolate());
+ __ TailCallExternalReference(
+ ref, NamedLoadHandlerCompiler::kInterceptorArgsLength, 1);
+}
+
+
+Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback(
+ Handle<JSObject> object, Handle<Name> name,
+ Handle<ExecutableAccessorInfo> callback) {
+ Register holder_reg = Frontend(receiver(), name);
+
+ __ PopReturnAddressTo(scratch1());
+ __ Push(receiver());
+ __ Push(holder_reg);
+ __ Push(callback); // callback info
+ __ Push(name);
+ __ Push(value());
+ __ PushReturnAddressFrom(scratch1());
+
+ // Do tail-call to the runtime system.
+ ExternalReference store_callback_property =
+ ExternalReference(IC_Utility(IC::kStoreCallbackProperty), isolate());
+ __ TailCallExternalReference(store_callback_property, 5, 1);
+
+ // Return the generated code.
+ return GetCode(kind(), Code::FAST, name);
+}
+
+
+Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor(
+ Handle<Name> name) {
+ __ PopReturnAddressTo(scratch1());
+ __ Push(receiver());
+ __ Push(this->name());
+ __ Push(value());
+ __ PushReturnAddressFrom(scratch1());
+
+ // Do tail-call to the runtime system.
+ ExternalReference store_ic_property = ExternalReference(
+ IC_Utility(IC::kStorePropertyWithInterceptor), isolate());
+ __ TailCallExternalReference(store_ic_property, 3, 1);
+
+ // Return the generated code.
+ return GetCode(kind(), Code::FAST, name);
+}
+
+
+Register NamedStoreHandlerCompiler::value() {
+ return StoreDescriptor::ValueRegister();
+}
+
+
+Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
+ Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) {
+ Label miss;
+ FrontendHeader(receiver(), name, &miss);
+
+ // Get the value from the cell.
+ Register result = StoreDescriptor::ValueRegister();
+ __ Move(result, cell);
+ __ movp(result, FieldOperand(result, PropertyCell::kValueOffset));
+
+ // Check for deleted property if property can actually be deleted.
+ if (is_configurable) {
+ __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
+ __ j(equal, &miss);
+ } else if (FLAG_debug_code) {
+ __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
+ __ Check(not_equal, kDontDeleteCellsCannotContainTheHole);
+ }
+
+ Counters* counters = isolate()->counters();
+ __ IncrementCounter(counters->named_load_global_stub(), 1);
+ __ ret(0);
+
+ FrontendFooter(name, &miss);
+
+ // Return the generated code.
+ return GetCode(kind(), Code::NORMAL, name);
+}
+
+
+#undef __
+}
+} // namespace v8::internal
+
+#endif // V8_TARGET_ARCH_X64