// Copyright 2006-2009 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include "v8.h" #include "ic-inl.h" #include "codegen-inl.h" #include "stub-cache.h" namespace v8 { namespace internal { #define __ ACCESS_MASM(masm) static void ProbeTable(MacroAssembler* masm, Code::Flags flags, StubCache::Table table, Register name, Register offset) { ExternalReference key_offset(SCTableReference::keyReference(table)); ExternalReference value_offset(SCTableReference::valueReference(table)); Label miss; // Save the offset on the stack. __ push(offset); // Check that the key in the entry matches the name. __ cmp(name, Operand::StaticArray(offset, times_2, key_offset)); __ j(not_equal, &miss, not_taken); // Get the code entry from the cache. __ mov(offset, Operand::StaticArray(offset, times_2, value_offset)); // Check that the flags match what we're looking for. __ mov(offset, FieldOperand(offset, Code::kFlagsOffset)); __ and_(offset, ~Code::kFlagsNotUsedInLookup); __ cmp(offset, flags); __ j(not_equal, &miss); // Restore offset and re-load code entry from cache. __ pop(offset); __ mov(offset, Operand::StaticArray(offset, times_2, value_offset)); // Jump to the first instruction in the code stub. __ add(Operand(offset), Immediate(Code::kHeaderSize - kHeapObjectTag)); __ jmp(Operand(offset)); // Miss: Restore offset and fall through. __ bind(&miss); __ pop(offset); } void StubCache::GenerateProbe(MacroAssembler* masm, Code::Flags flags, Register receiver, Register name, Register scratch) { Label miss; // Make sure that code is valid. The shifting code relies on the // entry size being 8. ASSERT(sizeof(Entry) == 8); // Make sure the flags does not name a specific type. ASSERT(Code::ExtractTypeFromFlags(flags) == 0); // Make sure that there are no register conflicts. ASSERT(!scratch.is(receiver)); ASSERT(!scratch.is(name)); // Check that the receiver isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); // Get the map of the receiver and compute the hash. __ mov(scratch, FieldOperand(name, String::kLengthOffset)); __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); __ xor_(scratch, flags); __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); // Probe the primary table. ProbeTable(masm, flags, kPrimary, name, scratch); // Primary miss: Compute hash for secondary probe. __ sub(scratch, Operand(name)); __ add(Operand(scratch), Immediate(flags)); __ and_(scratch, (kSecondaryTableSize - 1) << kHeapObjectTagSize); // Probe the secondary table. ProbeTable(masm, flags, kSecondary, name, scratch); // Cache miss: Fall-through and let caller handle the miss by // entering the runtime system. __ bind(&miss); } void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, int index, Register prototype) { // Load the global or builtins object from the current context. __ mov(prototype, Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX))); // Load the global context from the global or builtins object. __ mov(prototype, FieldOperand(prototype, GlobalObject::kGlobalContextOffset)); // Load the function from the global context. __ mov(prototype, Operand(prototype, Context::SlotOffset(index))); // Load the initial map. The global functions all have initial maps. __ mov(prototype, FieldOperand(prototype, JSFunction::kPrototypeOrInitialMapOffset)); // Load the prototype from the initial map. __ mov(prototype, FieldOperand(prototype, Map::kPrototypeOffset)); } void StubCompiler::GenerateLoadArrayLength(MacroAssembler* masm, Register receiver, Register scratch, Label* miss_label) { // Check that the receiver isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, miss_label, not_taken); // Check that the object is a JS array. __ CmpObjectType(receiver, JS_ARRAY_TYPE, scratch); __ j(not_equal, miss_label, not_taken); // Load length directly from the JS array. __ mov(eax, FieldOperand(receiver, JSArray::kLengthOffset)); __ ret(0); } // Generate code to check if an object is a string. If the object is // a string, the map's instance type is left in the scratch register. static void GenerateStringCheck(MacroAssembler* masm, Register receiver, Register scratch, Label* smi, Label* non_string_object) { // Check that the object isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, smi, not_taken); // Check that the object is a string. __ mov(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); __ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); ASSERT(kNotStringTag != 0); __ test(scratch, Immediate(kNotStringTag)); __ j(not_zero, non_string_object, not_taken); } void StubCompiler::GenerateLoadStringLength(MacroAssembler* masm, Register receiver, Register scratch, Label* miss) { Label load_length, check_wrapper; // Check if the object is a string leaving the instance type in the // scratch register. GenerateStringCheck(masm, receiver, scratch, miss, &check_wrapper); // Load length directly from the string. __ bind(&load_length); __ and_(scratch, kStringSizeMask); __ mov(eax, FieldOperand(receiver, String::kLengthOffset)); // ecx is also the receiver. __ lea(ecx, Operand(scratch, String::kLongLengthShift)); __ shr(eax); // ecx is implicit shift register. __ shl(eax, kSmiTagSize); __ ret(0); // Check if the object is a JSValue wrapper. __ bind(&check_wrapper); __ cmp(scratch, JS_VALUE_TYPE); __ j(not_equal, miss, not_taken); // Check if the wrapped value is a string and load the length // directly if it is. __ mov(receiver, FieldOperand(receiver, JSValue::kValueOffset)); GenerateStringCheck(masm, receiver, scratch, miss, miss); __ jmp(&load_length); } void StubCompiler::GenerateLoadFunctionPrototype(MacroAssembler* masm, Register receiver, Register scratch1, Register scratch2, Label* miss_label) { __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label); __ mov(eax, Operand(scratch1)); __ ret(0); } // Load a fast property out of a holder object (src). In-object properties // are loaded directly otherwise the property is loaded from the properties // fixed array. void StubCompiler::GenerateFastPropertyLoad(MacroAssembler* masm, Register dst, Register src, JSObject* holder, int index) { // Adjust for the number of properties stored in the holder. index -= holder->map()->inobject_properties(); if (index < 0) { // Get the property straight out of the holder. int offset = holder->map()->instance_size() + (index * kPointerSize); __ mov(dst, FieldOperand(src, offset)); } else { // Calculate the offset into the properties array. int offset = index * kPointerSize + Array::kHeaderSize; __ mov(dst, FieldOperand(src, JSObject::kPropertiesOffset)); __ mov(dst, FieldOperand(dst, offset)); } } void StubCompiler::GenerateLoadField(MacroAssembler* masm, JSObject* object, JSObject* holder, Register receiver, Register scratch1, Register scratch2, int index, Label* miss_label) { // Check that the receiver isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, miss_label, not_taken); // Check that the maps haven't changed. Register reg = masm->CheckMaps(object, receiver, holder, scratch1, scratch2, miss_label); // Get the value from the properties. GenerateFastPropertyLoad(masm, eax, reg, holder, index); __ ret(0); } void StubCompiler::GenerateLoadCallback(MacroAssembler* masm, JSObject* object, JSObject* holder, Register receiver, Register name, Register scratch1, Register scratch2, AccessorInfo* callback, Label* miss_label) { // Check that the receiver isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, miss_label, not_taken); // Check that the maps haven't changed. Register reg = masm->CheckMaps(object, receiver, holder, scratch1, scratch2, miss_label); // Push the arguments on the JS stack of the caller. __ pop(scratch2); // remove return address __ push(receiver); // receiver __ push(Immediate(Handle(callback))); // callback data __ push(name); // name __ push(reg); // holder __ push(scratch2); // restore return address // Do tail-call to the runtime system. ExternalReference load_callback_property = ExternalReference(IC_Utility(IC::kLoadCallbackProperty)); __ TailCallRuntime(load_callback_property, 4); } void StubCompiler::GenerateLoadConstant(MacroAssembler* masm, JSObject* object, JSObject* holder, Register receiver, Register scratch1, Register scratch2, Object* value, Label* miss_label) { // Check that the receiver isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, miss_label, not_taken); // Check that the maps haven't changed. Register reg = masm->CheckMaps(object, receiver, holder, scratch1, scratch2, miss_label); // Return the constant value. __ mov(eax, Handle(value)); __ ret(0); } void StubCompiler::GenerateLoadInterceptor(MacroAssembler* masm, JSObject* object, JSObject* holder, Smi* lookup_hint, Register receiver, Register name, Register scratch1, Register scratch2, Label* miss_label) { // Check that the receiver isn't a smi. __ test(receiver, Immediate(kSmiTagMask)); __ j(zero, miss_label, not_taken); // Check that the maps haven't changed. Register reg = masm->CheckMaps(object, receiver, holder, scratch1, scratch2, miss_label); // Push the arguments on the JS stack of the caller. __ pop(scratch2); // remove return address __ push(receiver); // receiver __ push(reg); // holder __ push(name); // name // TODO(367): Maybe don't push lookup_hint for LOOKUP_IN_HOLDER and/or // LOOKUP_IN_PROTOTYPE, but use a special version of lookup method? __ push(Immediate(lookup_hint)); __ push(scratch2); // restore return address // Do tail-call to the runtime system. ExternalReference load_ic_property = ExternalReference(IC_Utility(IC::kLoadInterceptorProperty)); __ TailCallRuntime(load_ic_property, 4); } void StubCompiler::GenerateLoadMiss(MacroAssembler* masm, Code::Kind kind) { ASSERT(kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC); Code* code = NULL; if (kind == Code::LOAD_IC) { code = Builtins::builtin(Builtins::LoadIC_Miss); } else { code = Builtins::builtin(Builtins::KeyedLoadIC_Miss); } Handle ic(code); __ jmp(ic, RelocInfo::CODE_TARGET); } void StubCompiler::GenerateStoreField(MacroAssembler* masm, Builtins::Name storage_extend, JSObject* object, int index, Map* transition, Register receiver_reg, Register name_reg, Register scratch, Label* miss_label) { // Check that the object isn't a smi. __ test(receiver_reg, Immediate(kSmiTagMask)); __ j(zero, miss_label, not_taken); // Check that the map of the object hasn't changed. __ cmp(FieldOperand(receiver_reg, HeapObject::kMapOffset), Immediate(Handle(object->map()))); __ j(not_equal, miss_label, not_taken); // Perform global security token check if needed. if (object->IsJSGlobalProxy()) { __ CheckAccessGlobalProxy(receiver_reg, scratch, miss_label); } // Stub never generated for non-global objects that require access // checks. ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded()); // Perform map transition for the receiver if necessary. if ((transition != NULL) && (object->map()->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(ecx, Immediate(Handle(transition))); Handle ic(Builtins::builtin(storage_extend)); __ jmp(ic, RelocInfo::CODE_TARGET); return; } if (transition != NULL) { // Update the map of the object; no write barrier updating is // needed because the map is never in new space. __ mov(FieldOperand(receiver_reg, HeapObject::kMapOffset), Immediate(Handle(transition))); } // 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 -= object->map()->inobject_properties(); if (index < 0) { // Set the property straight into the object. int offset = object->map()->instance_size() + (index * kPointerSize); __ mov(FieldOperand(receiver_reg, offset), eax); // Update the write barrier for the array address. // Pass the value being stored in the now unused name_reg. __ mov(name_reg, Operand(eax)); __ RecordWrite(receiver_reg, offset, name_reg, scratch); } else { // Write to the properties array. int offset = index * kPointerSize + Array::kHeaderSize; // Get the properties array (optimistically). __ mov(scratch, FieldOperand(receiver_reg, JSObject::kPropertiesOffset)); __ mov(FieldOperand(scratch, offset), eax); // Update the write barrier for the array address. // Pass the value being stored in the now unused name_reg. __ mov(name_reg, Operand(eax)); __ RecordWrite(scratch, offset, name_reg, receiver_reg); } // Return the value (register eax). __ ret(0); } #undef __ #define __ ACCESS_MASM(masm()) // TODO(1241006): Avoid having lazy compile stubs specialized by the // number of arguments. It is not needed anymore. Object* StubCompiler::CompileLazyCompile(Code::Flags flags) { // Enter an internal frame. __ EnterInternalFrame(); // Push a copy of the function onto the stack. __ push(edi); __ push(edi); // function is also the parameter to the runtime call __ CallRuntime(Runtime::kLazyCompile, 1); __ pop(edi); // Tear down temporary frame. __ LeaveInternalFrame(); // Do a tail-call of the compiled function. __ lea(ecx, FieldOperand(eax, Code::kHeaderSize)); __ jmp(Operand(ecx)); return GetCodeWithFlags(flags, "LazyCompileStub"); } Object* CallStubCompiler::CompileCallField(Object* object, JSObject* holder, int index, String* name, Code::Flags flags) { ASSERT_EQ(FIELD, Code::ExtractTypeFromFlags(flags)); // ----------- S t a t e ------------- // ----------------------------------- Label miss; // Get the receiver from the stack. const int argc = arguments().immediate(); __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); // Check that the receiver isn't a smi. __ test(edx, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); // Do the right check and compute the holder register. Register reg = masm()->CheckMaps(JSObject::cast(object), edx, holder, ebx, ecx, &miss); GenerateFastPropertyLoad(masm(), edi, reg, holder, index); // Check that the function really is a function. __ test(edi, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); __ CmpObjectType(edi, JS_FUNCTION_TYPE, ebx); __ j(not_equal, &miss, not_taken); // Patch the receiver on the stack with the global proxy if // necessary. if (object->IsGlobalObject()) { __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset)); __ mov(Operand(esp, (argc + 1) * kPointerSize), edx); } // Invoke the function. __ InvokeFunction(edi, arguments(), JUMP_FUNCTION); // Handle call cache miss. __ bind(&miss); Handle ic = ComputeCallMiss(arguments().immediate()); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. return GetCodeWithFlags(flags, name); } Object* CallStubCompiler::CompileCallConstant(Object* object, JSObject* holder, JSFunction* function, CheckType check, Code::Flags flags) { ASSERT_EQ(CONSTANT_FUNCTION, Code::ExtractTypeFromFlags(flags)); // ----------- S t a t e ------------- // ----------------------------------- Label miss; // Get the receiver from the stack. const int argc = arguments().immediate(); __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); // Check that the receiver isn't a smi. if (check != NUMBER_CHECK) { __ test(edx, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); } // Make sure that it's okay not to patch the on stack receiver // unless we're doing a receiver map check. ASSERT(!object->IsGlobalObject() || check == RECEIVER_MAP_CHECK); switch (check) { case RECEIVER_MAP_CHECK: // Check that the maps haven't changed. __ CheckMaps(JSObject::cast(object), edx, holder, ebx, ecx, &miss); // Patch the receiver on the stack with the global proxy if // necessary. if (object->IsGlobalObject()) { __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset)); __ mov(Operand(esp, (argc + 1) * kPointerSize), edx); } break; case STRING_CHECK: // Check that the object is a two-byte string or a symbol. __ mov(ecx, FieldOperand(edx, HeapObject::kMapOffset)); __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset)); __ cmp(ecx, FIRST_NONSTRING_TYPE); __ j(above_equal, &miss, not_taken); // Check that the maps starting from the prototype haven't changed. GenerateLoadGlobalFunctionPrototype(masm(), Context::STRING_FUNCTION_INDEX, ecx); __ CheckMaps(JSObject::cast(object->GetPrototype()), ecx, holder, ebx, edx, &miss); break; case NUMBER_CHECK: { Label fast; // Check that the object is a smi or a heap number. __ test(edx, Immediate(kSmiTagMask)); __ j(zero, &fast, taken); __ CmpObjectType(edx, HEAP_NUMBER_TYPE, ecx); __ j(not_equal, &miss, not_taken); __ bind(&fast); // Check that the maps starting from the prototype haven't changed. GenerateLoadGlobalFunctionPrototype(masm(), Context::NUMBER_FUNCTION_INDEX, ecx); __ CheckMaps(JSObject::cast(object->GetPrototype()), ecx, holder, ebx, edx, &miss); break; } case BOOLEAN_CHECK: { Label fast; // Check that the object is a boolean. __ cmp(edx, Factory::true_value()); __ j(equal, &fast, taken); __ cmp(edx, Factory::false_value()); __ j(not_equal, &miss, not_taken); __ bind(&fast); // Check that the maps starting from the prototype haven't changed. GenerateLoadGlobalFunctionPrototype(masm(), Context::BOOLEAN_FUNCTION_INDEX, ecx); __ CheckMaps(JSObject::cast(object->GetPrototype()), ecx, holder, ebx, edx, &miss); break; } case JSARRAY_HAS_FAST_ELEMENTS_CHECK: __ CheckMaps(JSObject::cast(object), edx, holder, ebx, ecx, &miss); // Make sure object->elements()->map() != Heap::dictionary_array_map() // Get the elements array of the object. __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); // Check that the object is in fast mode (not dictionary). __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), Immediate(Factory::hash_table_map())); __ j(equal, &miss, not_taken); break; default: UNREACHABLE(); } // Get the function and setup the context. __ mov(edi, Immediate(Handle(function))); __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); // Jump to the cached code (tail call). Handle code(function->code()); ParameterCount expected(function->shared()->formal_parameter_count()); __ InvokeCode(code, expected, arguments(), RelocInfo::CODE_TARGET, JUMP_FUNCTION); // Handle call cache miss. __ bind(&miss); Handle ic = ComputeCallMiss(arguments().immediate()); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. String* function_name = NULL; if (function->shared()->name()->IsString()) { function_name = String::cast(function->shared()->name()); } return GetCodeWithFlags(flags, function_name); } Object* CallStubCompiler::CompileCallInterceptor(Object* object, JSObject* holder, String* name) { // ----------- S t a t e ------------- // ----------------------------------- Label miss; // Get the number of arguments. const int argc = arguments().immediate(); // Get the receiver from the stack. __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); // Check that the receiver isn't a smi. __ test(edx, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); // Check that maps have not changed and compute the holder register. Register reg = masm()->CheckMaps(JSObject::cast(object), edx, holder, ebx, ecx, &miss); // Enter an internal frame. __ EnterInternalFrame(); // Push arguments on the expression stack. __ push(edx); // receiver __ push(reg); // holder __ push(Operand(ebp, (argc + 3) * kPointerSize)); // name __ push(Immediate(holder->InterceptorPropertyLookupHint(name))); // Perform call. ExternalReference load_interceptor = ExternalReference(IC_Utility(IC::kLoadInterceptorProperty)); __ mov(eax, Immediate(4)); __ mov(ebx, Immediate(load_interceptor)); CEntryStub stub; __ CallStub(&stub); // Move result to edi and restore receiver. __ mov(edi, eax); __ mov(edx, Operand(ebp, (argc + 2) * kPointerSize)); // receiver // Exit frame. __ LeaveInternalFrame(); // Check that the function really is a function. __ test(edi, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); __ CmpObjectType(edi, JS_FUNCTION_TYPE, ebx); __ j(not_equal, &miss, not_taken); // Patch the receiver on the stack with the global proxy if // necessary. if (object->IsGlobalObject()) { __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset)); __ mov(Operand(esp, (argc + 1) * kPointerSize), edx); } // Invoke the function. __ InvokeFunction(edi, arguments(), JUMP_FUNCTION); // Handle load cache miss. __ bind(&miss); Handle ic = ComputeCallMiss(argc); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. return GetCode(INTERCEPTOR, name); } Object* StoreStubCompiler::CompileStoreField(JSObject* object, int index, Map* transition, String* name) { // ----------- S t a t e ------------- // -- eax : value // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; // Get the object from the stack. __ mov(ebx, Operand(esp, 1 * kPointerSize)); // Generate store field code. Trashes the name register. GenerateStoreField(masm(), Builtins::StoreIC_ExtendStorage, object, index, transition, ebx, ecx, edx, &miss); // Handle store cache miss. __ bind(&miss); __ mov(ecx, Immediate(Handle(name))); // restore name Handle ic(Builtins::builtin(Builtins::StoreIC_Miss)); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); } Object* StoreStubCompiler::CompileStoreCallback(JSObject* object, AccessorInfo* callback, String* name) { // ----------- S t a t e ------------- // -- eax : value // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; // Get the object from the stack. __ mov(ebx, Operand(esp, 1 * kPointerSize)); // Check that the object isn't a smi. __ test(ebx, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); // Check that the map of the object hasn't changed. __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), Immediate(Handle(object->map()))); __ j(not_equal, &miss, not_taken); // Perform global security token check if needed. if (object->IsJSGlobalProxy()) { __ CheckAccessGlobalProxy(ebx, edx, &miss); } // Stub never generated for non-global objects that require access // checks. ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded()); __ pop(ebx); // remove the return address __ push(Operand(esp, 0)); // receiver __ push(Immediate(Handle(callback))); // callback info __ push(ecx); // name __ push(eax); // value __ push(ebx); // restore return address // Do tail-call to the runtime system. ExternalReference store_callback_property = ExternalReference(IC_Utility(IC::kStoreCallbackProperty)); __ TailCallRuntime(store_callback_property, 4); // Handle store cache miss. __ bind(&miss); __ mov(ecx, Immediate(Handle(name))); // restore name Handle ic(Builtins::builtin(Builtins::StoreIC_Miss)); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. return GetCode(CALLBACKS, name); } Object* StoreStubCompiler::CompileStoreInterceptor(JSObject* receiver, String* name) { // ----------- S t a t e ------------- // -- eax : value // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; // Get the object from the stack. __ mov(ebx, Operand(esp, 1 * kPointerSize)); // Check that the object isn't a smi. __ test(ebx, Immediate(kSmiTagMask)); __ j(zero, &miss, not_taken); // Check that the map of the object hasn't changed. __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), Immediate(Handle(receiver->map()))); __ j(not_equal, &miss, not_taken); // Perform global security token check if needed. if (receiver->IsJSGlobalProxy()) { __ CheckAccessGlobalProxy(ebx, edx, &miss); } // Stub never generated for non-global objects that require access // checks. ASSERT(receiver->IsJSGlobalProxy() || !receiver->IsAccessCheckNeeded()); __ pop(ebx); // remove the return address __ push(Operand(esp, 0)); // receiver __ push(ecx); // name __ push(eax); // value __ push(ebx); // restore return address // Do tail-call to the runtime system. ExternalReference store_ic_property = ExternalReference(IC_Utility(IC::kStoreInterceptorProperty)); __ TailCallRuntime(store_ic_property, 3); // Handle store cache miss. __ bind(&miss); __ mov(ecx, Immediate(Handle(name))); // restore name Handle ic(Builtins::builtin(Builtins::StoreIC_Miss)); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. return GetCode(INTERCEPTOR, name); } Object* KeyedStoreStubCompiler::CompileStoreField(JSObject* object, int index, Map* transition, String* name) { // ----------- S t a t e ------------- // -- eax : value // -- esp[0] : return address // -- esp[4] : key // -- esp[8] : receiver // ----------------------------------- Label miss; __ IncrementCounter(&Counters::keyed_store_field, 1); // Get the name from the stack. __ mov(ecx, Operand(esp, 1 * kPointerSize)); // Check that the name has not changed. __ cmp(Operand(ecx), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); // Get the object from the stack. __ mov(ebx, Operand(esp, 2 * kPointerSize)); // Generate store field code. Trashes the name register. GenerateStoreField(masm(), Builtins::KeyedStoreIC_ExtendStorage, object, index, transition, ebx, ecx, edx, &miss); // Handle store cache miss. __ bind(&miss); __ DecrementCounter(&Counters::keyed_store_field, 1); Handle ic(Builtins::builtin(Builtins::KeyedStoreIC_Miss)); __ jmp(ic, RelocInfo::CODE_TARGET); // Return the generated code. return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); } Object* LoadStubCompiler::CompileLoadField(JSObject* object, JSObject* holder, int index, String* name) { // ----------- S t a t e ------------- // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); GenerateLoadField(masm(), object, holder, eax, ebx, edx, index, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::LOAD_IC); // Return the generated code. return GetCode(FIELD, name); } Object* LoadStubCompiler::CompileLoadCallback(JSObject* object, JSObject* holder, AccessorInfo* callback, String* name) { // ----------- S t a t e ------------- // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); GenerateLoadCallback(masm(), object, holder, eax, ecx, ebx, edx, callback, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::LOAD_IC); // Return the generated code. return GetCode(CALLBACKS, name); } Object* LoadStubCompiler::CompileLoadConstant(JSObject* object, JSObject* holder, Object* value, String* name) { // ----------- S t a t e ------------- // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); GenerateLoadConstant(masm(), object, holder, eax, ebx, edx, value, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::LOAD_IC); // Return the generated code. return GetCode(CONSTANT_FUNCTION, name); } Object* LoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, JSObject* holder, String* name) { // ----------- S t a t e ------------- // -- ecx : name // -- esp[0] : return address // -- esp[4] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); // TODO(368): Compile in the whole chain: all the interceptors in // prototypes and ultimate answer. GenerateLoadInterceptor(masm(), receiver, holder, holder->InterceptorPropertyLookupHint(name), eax, ecx, edx, ebx, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::LOAD_IC); // Return the generated code. return GetCode(INTERCEPTOR, name); } Object* KeyedLoadStubCompiler::CompileLoadField(String* name, JSObject* receiver, JSObject* holder, int index) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_field, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadField(masm(), receiver, holder, ecx, ebx, edx, index, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_field, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(FIELD, name); } Object* KeyedLoadStubCompiler::CompileLoadCallback(String* name, JSObject* receiver, JSObject* holder, AccessorInfo* callback) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_callback, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadCallback(masm(), receiver, holder, ecx, eax, ebx, edx, callback, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_callback, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(CALLBACKS, name); } Object* KeyedLoadStubCompiler::CompileLoadConstant(String* name, JSObject* receiver, JSObject* holder, Object* value) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_constant_function, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadConstant(masm(), receiver, holder, ecx, ebx, edx, value, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_constant_function, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(CONSTANT_FUNCTION, name); } Object* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, JSObject* holder, String* name) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_interceptor, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadInterceptor(masm(), receiver, holder, Smi::FromInt(JSObject::kLookupInHolder), ecx, eax, edx, ebx, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_interceptor, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(INTERCEPTOR, name); } Object* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_array_length, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadArrayLength(masm(), ecx, edx, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_array_length, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(CALLBACKS, name); } Object* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_string_length, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadStringLength(masm(), ecx, edx, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_string_length, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(CALLBACKS, name); } Object* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) { // ----------- S t a t e ------------- // -- esp[0] : return address // -- esp[4] : name // -- esp[8] : receiver // ----------------------------------- Label miss; __ mov(eax, (Operand(esp, kPointerSize))); __ mov(ecx, (Operand(esp, 2 * kPointerSize))); __ IncrementCounter(&Counters::keyed_load_function_prototype, 1); // Check that the name has not changed. __ cmp(Operand(eax), Immediate(Handle(name))); __ j(not_equal, &miss, not_taken); GenerateLoadFunctionPrototype(masm(), ecx, edx, ebx, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_function_prototype, 1); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); // Return the generated code. return GetCode(CALLBACKS, name); } #undef __ } } // namespace v8::internal