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/arm64/handler-compiler-arm64.cc b/src/ic/arm64/handler-compiler-arm64.cc
new file mode 100644
index 0000000..f7f82bc
--- /dev/null
+++ b/src/ic/arm64/handler-compiler-arm64.cc
@@ -0,0 +1,847 @@
+// 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_ARM64
+
+#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(!AreAliased(receiver, scratch0, scratch1));
+ DCHECK(name->IsUniqueName());
+ Counters* counters = masm->isolate()->counters();
+ __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1);
+ __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
+
+ Label done;
+
+ const int kInterceptorOrAccessCheckNeededMask =
+ (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded);
+
+ // Bail out if the receiver has a named interceptor or requires access checks.
+ Register map = scratch1;
+ __ Ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
+ __ Ldrb(scratch0, FieldMemOperand(map, Map::kBitFieldOffset));
+ __ Tst(scratch0, kInterceptorOrAccessCheckNeededMask);
+ __ B(ne, miss_label);
+
+ // Check that receiver is a JSObject.
+ __ Ldrb(scratch0, FieldMemOperand(map, Map::kInstanceTypeOffset));
+ __ Cmp(scratch0, FIRST_SPEC_OBJECT_TYPE);
+ __ B(lt, miss_label);
+
+ // Load properties array.
+ Register properties = scratch0;
+ __ Ldr(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
+ // Check that the properties array is a dictionary.
+ __ Ldr(map, FieldMemOperand(properties, HeapObject::kMapOffset));
+ __ JumpIfNotRoot(map, Heap::kHashTableMapRootIndex, miss_label);
+
+ NameDictionaryLookupStub::GenerateNegativeLookup(
+ masm, miss_label, &done, receiver, properties, name, scratch1);
+ __ Bind(&done);
+ __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
+}
+
+
+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;
+ __ Ldr(scratch, GlobalObjectMemOperand());
+ __ Ldr(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset));
+ __ Ldr(scratch, ContextMemOperand(scratch, index));
+ __ Cmp(scratch, Operand(function));
+ __ B(ne, miss);
+
+ // Load its initial map. The global functions all have initial maps.
+ __ Mov(prototype, Operand(Handle<Map>(function->initial_map())));
+ // Load the prototype from the initial map.
+ __ Ldr(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset));
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(
+ MacroAssembler* masm, Register receiver, Register scratch1,
+ Register scratch2, Label* miss_label) {
+ __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label);
+ // TryGetFunctionPrototype can't put the result directly in x0 because the
+ // 3 inputs registers can't alias and we call this function from
+ // LoadIC::GenerateFunctionPrototype, where receiver is x0. So we explicitly
+ // move the result in x0.
+ __ Mov(x0, scratch1);
+ __ Ret();
+}
+
+
+// Generate code to check that a global property cell is empty. Create
+// the property cell at compilation time if no cell exists for the
+// property.
+void PropertyHandlerCompiler::GenerateCheckPropertyCell(
+ MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name,
+ Register scratch, Label* miss) {
+ Handle<Cell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
+ DCHECK(cell->value()->IsTheHole());
+ __ Mov(scratch, Operand(cell));
+ __ Ldr(scratch, FieldMemOperand(scratch, Cell::kValueOffset));
+ __ JumpIfNotRoot(scratch, Heap::kTheHoleValueRootIndex, miss);
+}
+
+
+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));
+ Register scratch = name;
+ __ Mov(scratch, Operand(interceptor));
+ __ Push(scratch, receiver, 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,
+ bool is_store, int argc, Register* values) {
+ DCHECK(!AreAliased(receiver, scratch));
+
+ MacroAssembler::PushPopQueue queue(masm);
+ queue.Queue(receiver);
+ // Write the arguments to the stack frame.
+ for (int i = 0; i < argc; i++) {
+ Register arg = values[argc - 1 - i];
+ DCHECK(!AreAliased(receiver, scratch, arg));
+ queue.Queue(arg);
+ }
+ queue.PushQueued();
+
+ DCHECK(optimization.is_simple_api_call());
+
+ // Abi for CallApiFunctionStub.
+ Register callee = x0;
+ Register call_data = x4;
+ Register holder = x2;
+ Register api_function_address = x1;
+
+ // Put holder in place.
+ CallOptimization::HolderLookup holder_lookup;
+ Handle<JSObject> api_holder =
+ optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup);
+ switch (holder_lookup) {
+ case CallOptimization::kHolderIsReceiver:
+ __ Mov(holder, receiver);
+ break;
+ case CallOptimization::kHolderFound:
+ __ LoadObject(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.
+ __ LoadObject(callee, function);
+
+ bool call_data_undefined = false;
+ // Put call_data in place.
+ if (isolate->heap()->InNewSpace(*call_data_obj)) {
+ __ LoadObject(call_data, api_call_info);
+ __ Ldr(call_data, FieldMemOperand(call_data, CallHandlerInfo::kDataOffset));
+ } else if (call_data_obj->IsUndefined()) {
+ call_data_undefined = true;
+ __ LoadRoot(call_data, Heap::kUndefinedValueRootIndex);
+ } else {
+ __ LoadObject(call_data, call_data_obj);
+ }
+
+ // Put api_function_address in place.
+ Address function_address = v8::ToCData<Address>(api_call_info->callback());
+ ApiFunction fun(function_address);
+ ExternalReference ref = ExternalReference(
+ &fun, ExternalReference::DIRECT_API_CALL, masm->isolate());
+ __ Mov(api_function_address, ref);
+
+ // Jump to stub.
+ CallApiFunctionStub stub(isolate, is_store, call_data_undefined, argc);
+ __ TailCallStub(&stub);
+}
+
+
+void NamedStoreHandlerCompiler::GenerateStoreViaSetter(
+ MacroAssembler* masm, Handle<HeapType> type, Register receiver,
+ Handle<JSFunction> setter) {
+ // ----------- S t a t e -------------
+ // -- lr : return address
+ // -----------------------------------
+ Label miss;
+
+ {
+ 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.
+ __ Ldr(receiver,
+ FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset));
+ }
+ __ Push(receiver, 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(x0);
+
+ // Restore context register.
+ __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+ }
+ __ Ret();
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
+ MacroAssembler* masm, Handle<HeapType> type, Register receiver,
+ Handle<JSFunction> getter) {
+ {
+ 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.
+ __ Ldr(receiver,
+ FieldMemOperand(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.
+ __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+ }
+ __ Ret();
+}
+
+
+void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
+ // Push receiver, name and value for runtime call.
+ __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(),
+ StoreDescriptor::ValueRegister());
+
+ // The slow case calls into the runtime to complete the store without causing
+ // an IC miss that would otherwise cause a transition to the generic stub.
+ ExternalReference ref =
+ ExternalReference(IC_Utility(IC::kStoreIC_Slow), masm->isolate());
+ __ TailCallExternalReference(ref, 3, 1);
+}
+
+
+void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
+ ASM_LOCATION("ElementHandlerCompiler::GenerateStoreSlow");
+
+ // Push receiver, key and value for runtime call.
+ __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(),
+ StoreDescriptor::ValueRegister());
+
+ // The slow case calls into the runtime to complete the store without causing
+ // an IC miss that would otherwise cause a transition to the generic stub.
+ ExternalReference ref =
+ ExternalReference(IC_Utility(IC::kKeyedStoreIC_Slow), masm->isolate());
+ __ TailCallExternalReference(ref, 3, 1);
+}
+
+
+#undef __
+#define __ ACCESS_MASM(masm())
+
+
+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();
+ __ Mov(result, Operand(cell));
+ __ Ldr(result, FieldMemOperand(result, Cell::kValueOffset));
+
+ // Check for deleted property if property can actually be deleted.
+ if (is_configurable) {
+ __ JumpIfRoot(result, Heap::kTheHoleValueRootIndex, &miss);
+ }
+
+ Counters* counters = isolate()->counters();
+ __ IncrementCounter(counters->named_load_global_stub(), 1, x1, x3);
+ __ Ret();
+
+ FrontendFooter(name, &miss);
+
+ // Return the generated code.
+ return GetCode(kind(), Code::NORMAL, name);
+}
+
+
+Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor(
+ Handle<Name> name) {
+ Label miss;
+
+ ASM_LOCATION("NamedStoreHandlerCompiler::CompileStoreInterceptor");
+
+ __ Push(receiver(), this->name(), value());
+
+ // 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();
+}
+
+
+void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label,
+ Handle<Name> name) {
+ if (!label->is_unused()) {
+ __ Bind(label);
+ __ Mov(this->name(), Operand(name));
+ }
+}
+
+
+// Generate StoreTransition code, value is passed in x0 register.
+// When leaving generated code after success, the receiver_reg and storage_reg
+// may be clobbered. Upon branch to miss_label, the receiver and name registers
+// have their original values.
+void NamedStoreHandlerCompiler::GenerateStoreTransition(
+ Handle<Map> transition, Handle<Name> name, Register receiver_reg,
+ Register storage_reg, Register value_reg, Register scratch1,
+ Register scratch2, Register scratch3, Label* miss_label, Label* slow) {
+ Label exit;
+
+ DCHECK(!AreAliased(receiver_reg, storage_reg, value_reg, scratch1, scratch2,
+ scratch3));
+
+ // We don't need scratch3.
+ scratch3 = NoReg;
+
+ 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());
+ __ LoadObject(scratch1, constant);
+ __ Cmp(value_reg, scratch1);
+ __ B(ne, 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()) {
+ __ Ldr(scratch1, FieldMemOperand(value_reg, HeapObject::kMapOffset));
+ Label do_store;
+ while (true) {
+ __ CompareMap(scratch1, it.Current());
+ it.Advance();
+ if (it.Done()) {
+ __ B(ne, miss_label);
+ break;
+ }
+ __ B(eq, &do_store);
+ }
+ __ Bind(&do_store);
+ }
+ } else if (representation.IsDouble()) {
+ UseScratchRegisterScope temps(masm());
+ DoubleRegister temp_double = temps.AcquireD();
+ __ SmiUntagToDouble(temp_double, value_reg, kSpeculativeUntag);
+
+ Label do_store;
+ __ JumpIfSmi(value_reg, &do_store);
+
+ __ CheckMap(value_reg, scratch1, Heap::kHeapNumberMapRootIndex, miss_label,
+ DONT_DO_SMI_CHECK);
+ __ Ldr(temp_double, FieldMemOperand(value_reg, HeapNumber::kValueOffset));
+
+ __ Bind(&do_store);
+ __ AllocateHeapNumber(storage_reg, slow, scratch1, scratch2, temp_double,
+ NoReg, MUTABLE);
+ }
+
+ // 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.
+ __ Mov(scratch1, Operand(transition));
+ __ Push(receiver_reg, scratch1, value_reg);
+ __ TailCallExternalReference(
+ ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage),
+ isolate()),
+ 3, 1);
+ return;
+ }
+
+ // Update the map of the object.
+ __ Mov(scratch1, Operand(transition));
+ __ Str(scratch1, FieldMemOperand(receiver_reg, HeapObject::kMapOffset));
+
+ // Update the write barrier for the map field.
+ __ RecordWriteField(receiver_reg, HeapObject::kMapOffset, scratch1, scratch2,
+ kLRHasNotBeenSaved, kDontSaveFPRegs, OMIT_REMEMBERED_SET,
+ OMIT_SMI_CHECK);
+
+ if (details.type() == CONSTANT) {
+ DCHECK(value_reg.is(x0));
+ __ Ret();
+ 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;
+ Register prop_reg = representation.IsDouble() ? storage_reg : value_reg;
+ if (index < 0) {
+ // Set the property straight into the object.
+ int offset = transition->instance_size() + (index * kPointerSize);
+ __ Str(prop_reg, FieldMemOperand(receiver_reg, offset));
+
+ if (!representation.IsSmi()) {
+ // Update the write barrier for the array address.
+ if (!representation.IsDouble()) {
+ __ Mov(storage_reg, value_reg);
+ }
+ __ RecordWriteField(receiver_reg, offset, storage_reg, scratch1,
+ kLRHasNotBeenSaved, kDontSaveFPRegs,
+ EMIT_REMEMBERED_SET, smi_check);
+ }
+ } else {
+ // Write to the properties array.
+ int offset = index * kPointerSize + FixedArray::kHeaderSize;
+ // Get the properties array
+ __ Ldr(scratch1,
+ FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
+ __ Str(prop_reg, FieldMemOperand(scratch1, offset));
+
+ if (!representation.IsSmi()) {
+ // Update the write barrier for the array address.
+ if (!representation.IsDouble()) {
+ __ Mov(storage_reg, value_reg);
+ }
+ __ RecordWriteField(scratch1, offset, storage_reg, receiver_reg,
+ kLRHasNotBeenSaved, kDontSaveFPRegs,
+ EMIT_REMEMBERED_SET, smi_check);
+ }
+ }
+
+ __ Bind(&exit);
+ // Return the value (register x0).
+ DCHECK(value_reg.is(x0));
+ __ Ret();
+}
+
+
+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();
+ __ Ldr(scratch1(), FieldMemOperand(value_reg, HeapObject::kMapOffset));
+ Label do_store;
+ while (true) {
+ __ CompareMap(scratch1(), it.Current());
+ it.Advance();
+ if (it.Done()) {
+ __ B(ne, miss_label);
+ break;
+ }
+ __ B(eq, &do_store);
+ }
+ __ 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()));
+
+ // object_reg and holder_reg registers can alias.
+ DCHECK(!AreAliased(object_reg, scratch1, scratch2));
+ DCHECK(!AreAliased(holder_reg, scratch1, scratch2));
+
+ // Keep track of the current object in register 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);
+
+ __ Ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
+ reg = holder_reg; // From now on the object will be in holder_reg.
+ __ Ldr(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset));
+ } else {
+ // 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 =
+ heap()->InNewSpace(*prototype) || depth == 1;
+ Register map_reg = scratch1;
+ __ Ldr(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset));
+
+ if (depth != 1 || check == CHECK_ALL_MAPS) {
+ __ CheckMap(map_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()) {
+ UseScratchRegisterScope temps(masm());
+ __ CheckAccessGlobalProxy(reg, scratch2, temps.AcquireX(), 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) {
+ __ Ldr(reg, FieldMemOperand(map_reg, Map::kPrototypeOffset));
+ } else {
+ __ Mov(reg, Operand(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));
+
+ // Check the holder map.
+ if (depth != 0 || check == CHECK_ALL_MAPS) {
+ // Check the holder map.
+ __ CheckMap(reg, scratch1, 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, scratch2, miss);
+ }
+
+ // Return the register containing the holder.
+ return reg;
+}
+
+
+void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
+ if (!miss->is_unused()) {
+ Label success;
+ __ B(&success);
+
+ __ Bind(miss);
+ TailCallBuiltin(masm(), MissBuiltin(kind()));
+
+ __ Bind(&success);
+ }
+}
+
+
+void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
+ if (!miss->is_unused()) {
+ Label success;
+ __ B(&success);
+
+ GenerateRestoreName(miss, name);
+ TailCallBuiltin(masm(), MissBuiltin(kind()));
+
+ __ Bind(&success);
+ }
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) {
+ // Return the constant value.
+ __ LoadObject(x0, value);
+ __ Ret();
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadCallback(
+ Register reg, Handle<ExecutableAccessorInfo> callback) {
+ DCHECK(!AreAliased(scratch2(), scratch3(), scratch4(), reg));
+
+ // Build ExecutableAccessorInfo::args_ list on the stack and push property
+ // name below the exit frame to make GC aware of them and store pointers to
+ // them.
+ 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());
+
+ if (heap()->InNewSpace(callback->data())) {
+ __ Mov(scratch3(), Operand(callback));
+ __ Ldr(scratch3(),
+ FieldMemOperand(scratch3(), ExecutableAccessorInfo::kDataOffset));
+ } else {
+ __ Mov(scratch3(), Operand(Handle<Object>(callback->data(), isolate())));
+ }
+ __ LoadRoot(scratch4(), Heap::kUndefinedValueRootIndex);
+ __ Mov(scratch2(), Operand(ExternalReference::isolate_address(isolate())));
+ __ Push(scratch3(), scratch4(), scratch4(), scratch2(), reg, name());
+
+ Register args_addr = scratch2();
+ __ Add(args_addr, __ StackPointer(), kPointerSize);
+
+ // Stack at this point:
+ // sp[40] callback data
+ // sp[32] undefined
+ // sp[24] undefined
+ // sp[16] isolate
+ // args_addr -> sp[8] reg
+ // sp[0] name
+
+ // Abi for CallApiGetter.
+ Register getter_address_reg = x2;
+
+ // Set up the call.
+ Address getter_address = v8::ToCData<Address>(callback->getter());
+ ApiFunction fun(getter_address);
+ ExternalReference::Type type = ExternalReference::DIRECT_GETTER_CALL;
+ ExternalReference ref = ExternalReference(&fun, type, isolate());
+ __ Mov(getter_address_reg, ref);
+
+ CallApiGetterStub stub(isolate());
+ __ TailCallStub(&stub);
+}
+
+
+void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup(
+ LookupIterator* it, Register holder_reg) {
+ DCHECK(!AreAliased(receiver(), this->name(), scratch1(), scratch2(),
+ scratch3()));
+ 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(), holder_reg, this->name());
+ } else {
+ __ Push(holder_reg, 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;
+ __ JumpIfRoot(x0, Heap::kNoInterceptorResultSentinelRootIndex,
+ &interceptor_failed);
+ frame_scope.GenerateLeaveFrame();
+ __ Ret();
+
+ __ Bind(&interceptor_failed);
+ if (must_preserve_receiver_reg) {
+ __ Pop(this->name(), holder_reg, receiver());
+ } else {
+ __ Pop(this->name(), holder_reg);
+ }
+ // 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());
+ PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(),
+ holder());
+
+ 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) {
+ ASM_LOCATION("NamedStoreHandlerCompiler::CompileStoreCallback");
+ Register holder_reg = Frontend(receiver(), name);
+
+ // Stub never generated for non-global objects that require access checks.
+ DCHECK(holder()->IsJSGlobalProxy() || !holder()->IsAccessCheckNeeded());
+
+ // receiver() and holder_reg can alias.
+ DCHECK(!AreAliased(receiver(), scratch1(), scratch2(), value()));
+ DCHECK(!AreAliased(holder_reg, scratch1(), scratch2(), value()));
+ __ Mov(scratch1(), Operand(callback));
+ __ Mov(scratch2(), Operand(name));
+ __ Push(receiver(), holder_reg, scratch1(), scratch2(), value());
+
+ // 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);
+}
+
+
+#undef __
+}
+} // namespace v8::internal
+
+#endif // V8_TARGET_ARCH_IA32