| // 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" |
| |
| #if defined(V8_TARGET_ARCH_IA32) |
| |
| #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, |
| Register extra) { |
| ExternalReference key_offset(SCTableReference::keyReference(table)); |
| ExternalReference value_offset(SCTableReference::valueReference(table)); |
| |
| Label miss; |
| |
| if (extra.is_valid()) { |
| // Get the code entry from the cache. |
| __ mov(extra, Operand::StaticArray(offset, times_2, value_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); |
| |
| // Check that the flags match what we're looking for. |
| __ mov(offset, FieldOperand(extra, Code::kFlagsOffset)); |
| __ and_(offset, ~Code::kFlagsNotUsedInLookup); |
| __ cmp(offset, flags); |
| __ j(not_equal, &miss); |
| |
| // Jump to the first instruction in the code stub. |
| __ add(Operand(extra), Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| __ jmp(Operand(extra)); |
| |
| __ bind(&miss); |
| } else { |
| // 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)); |
| |
| // Pop at miss. |
| __ bind(&miss); |
| __ pop(offset); |
| } |
| } |
| |
| |
| // Helper function used to check that the dictionary doesn't contain |
| // the property. This function may return false negatives, so miss_label |
| // must always call a backup property check that is complete. |
| // This function is safe to call if the receiver has fast properties. |
| // Name must be a symbol and receiver must be a heap object. |
| static void GenerateDictionaryNegativeLookup(MacroAssembler* masm, |
| Label* miss_label, |
| Register receiver, |
| String* name, |
| Register r0, |
| Register r1) { |
| ASSERT(name->IsSymbol()); |
| __ IncrementCounter(&Counters::negative_lookups, 1); |
| __ IncrementCounter(&Counters::negative_lookups_miss, 1); |
| |
| Label done; |
| __ mov(r0, 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. |
| __ test_b(FieldOperand(r0, Map::kBitFieldOffset), |
| kInterceptorOrAccessCheckNeededMask); |
| __ j(not_zero, miss_label, not_taken); |
| |
| // Check that receiver is a JSObject. |
| __ CmpInstanceType(r0, FIRST_JS_OBJECT_TYPE); |
| __ j(below, miss_label, not_taken); |
| |
| // Load properties array. |
| Register properties = r0; |
| __ mov(properties, FieldOperand(receiver, JSObject::kPropertiesOffset)); |
| |
| // Check that the properties array is a dictionary. |
| __ cmp(FieldOperand(properties, HeapObject::kMapOffset), |
| Immediate(Factory::hash_table_map())); |
| __ j(not_equal, miss_label); |
| |
| // Compute the capacity mask. |
| const int kCapacityOffset = |
| StringDictionary::kHeaderSize + |
| StringDictionary::kCapacityIndex * kPointerSize; |
| |
| // Generate an unrolled loop that performs a few probes before |
| // giving up. |
| static const int kProbes = 4; |
| const int kElementsStartOffset = |
| StringDictionary::kHeaderSize + |
| StringDictionary::kElementsStartIndex * kPointerSize; |
| |
| // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| // not equal to the name and kProbes-th slot is not used (its name is the |
| // undefined value), it guarantees the hash table doesn't contain the |
| // property. It's true even if some slots represent deleted properties |
| // (their names are the null value). |
| for (int i = 0; i < kProbes; i++) { |
| // r0 points to properties hash. |
| // Compute the masked index: (hash + i + i * i) & mask. |
| Register index = r1; |
| // Capacity is smi 2^n. |
| __ mov(index, FieldOperand(properties, kCapacityOffset)); |
| __ dec(index); |
| __ and_(Operand(index), |
| Immediate(Smi::FromInt(name->Hash() + |
| StringDictionary::GetProbeOffset(i)))); |
| |
| // Scale the index by multiplying by the entry size. |
| ASSERT(StringDictionary::kEntrySize == 3); |
| __ lea(index, Operand(index, index, times_2, 0)); // index *= 3. |
| |
| Register entity_name = r1; |
| // Having undefined at this place means the name is not contained. |
| ASSERT_EQ(kSmiTagSize, 1); |
| __ mov(entity_name, Operand(properties, index, times_half_pointer_size, |
| kElementsStartOffset - kHeapObjectTag)); |
| __ cmp(entity_name, Factory::undefined_value()); |
| if (i != kProbes - 1) { |
| __ j(equal, &done, taken); |
| |
| // Stop if found the property. |
| __ cmp(entity_name, Handle<String>(name)); |
| __ j(equal, miss_label, not_taken); |
| |
| // Check if the entry name is not a symbol. |
| __ mov(entity_name, FieldOperand(entity_name, HeapObject::kMapOffset)); |
| __ test_b(FieldOperand(entity_name, Map::kInstanceTypeOffset), |
| kIsSymbolMask); |
| __ j(zero, miss_label, not_taken); |
| } else { |
| // Give up probing if still not found the undefined value. |
| __ j(not_equal, miss_label, not_taken); |
| } |
| } |
| |
| __ bind(&done); |
| __ DecrementCounter(&Counters::negative_lookups_miss, 1); |
| } |
| |
| |
| void StubCache::GenerateProbe(MacroAssembler* masm, |
| Code::Flags flags, |
| Register receiver, |
| Register name, |
| Register scratch, |
| Register extra, |
| Register extra2) { |
| Label miss; |
| USE(extra2); // The register extra2 is not used on the ia32 platform. |
| |
| // 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)); |
| ASSERT(!extra.is(receiver)); |
| ASSERT(!extra.is(name)); |
| ASSERT(!extra.is(scratch)); |
| |
| // Check scratch and extra registers are valid, and extra2 is unused. |
| ASSERT(!scratch.is(no_reg)); |
| ASSERT(extra2.is(no_reg)); |
| |
| // 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::kHashFieldOffset)); |
| __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); |
| __ xor_(scratch, flags); |
| __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); |
| |
| // Probe the primary table. |
| ProbeTable(masm, flags, kPrimary, name, scratch, extra); |
| |
| // Primary miss: Compute hash for secondary probe. |
| __ mov(scratch, FieldOperand(name, String::kHashFieldOffset)); |
| __ add(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); |
| __ xor_(scratch, flags); |
| __ and_(scratch, (kPrimaryTableSize - 1) << kHeapObjectTagSize); |
| __ sub(scratch, Operand(name)); |
| __ add(Operand(scratch), Immediate(flags)); |
| __ and_(scratch, (kSecondaryTableSize - 1) << kHeapObjectTagSize); |
| |
| // Probe the secondary table. |
| ProbeTable(masm, flags, kSecondary, name, scratch, extra); |
| |
| // 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) { |
| __ LoadGlobalFunction(index, prototype); |
| __ LoadGlobalFunctionInitialMap(prototype, prototype); |
| // Load the prototype from the initial map. |
| __ mov(prototype, FieldOperand(prototype, Map::kPrototypeOffset)); |
| } |
| |
| |
| void StubCompiler::GenerateDirectLoadGlobalFunctionPrototype( |
| MacroAssembler* masm, int index, Register prototype, Label* miss) { |
| // Check we're still in the same context. |
| __ cmp(Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX)), |
| Top::global()); |
| __ j(not_equal, miss); |
| // Get the global function with the given index. |
| JSFunction* function = JSFunction::cast(Top::global_context()->get(index)); |
| // Load its initial map. The global functions all have initial maps. |
| __ Set(prototype, Immediate(Handle<Map>(function->initial_map()))); |
| // 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 scratch1, |
| Register scratch2, |
| Label* miss) { |
| Label check_wrapper; |
| |
| // Check if the object is a string leaving the instance type in the |
| // scratch register. |
| GenerateStringCheck(masm, receiver, scratch1, miss, &check_wrapper); |
| |
| // Load length from the string and convert to a smi. |
| __ mov(eax, FieldOperand(receiver, String::kLengthOffset)); |
| __ ret(0); |
| |
| // Check if the object is a JSValue wrapper. |
| __ bind(&check_wrapper); |
| __ cmp(scratch1, 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(scratch2, FieldOperand(receiver, JSValue::kValueOffset)); |
| GenerateStringCheck(masm, scratch2, scratch1, miss, miss); |
| __ mov(eax, FieldOperand(scratch2, String::kLengthOffset)); |
| __ ret(0); |
| } |
| |
| |
| 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 + FixedArray::kHeaderSize; |
| __ mov(dst, FieldOperand(src, JSObject::kPropertiesOffset)); |
| __ mov(dst, FieldOperand(dst, offset)); |
| } |
| } |
| |
| |
| static void PushInterceptorArguments(MacroAssembler* masm, |
| Register receiver, |
| Register holder, |
| Register name, |
| JSObject* holder_obj) { |
| __ push(name); |
| InterceptorInfo* interceptor = holder_obj->GetNamedInterceptor(); |
| ASSERT(!Heap::InNewSpace(interceptor)); |
| Register scratch = name; |
| __ mov(scratch, Immediate(Handle<Object>(interceptor))); |
| __ push(scratch); |
| __ push(receiver); |
| __ push(holder); |
| __ push(FieldOperand(scratch, InterceptorInfo::kDataOffset)); |
| } |
| |
| |
| static void CompileCallLoadPropertyWithInterceptor(MacroAssembler* masm, |
| Register receiver, |
| Register holder, |
| Register name, |
| JSObject* holder_obj) { |
| PushInterceptorArguments(masm, receiver, holder, name, holder_obj); |
| __ CallExternalReference( |
| ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorOnly)), |
| 5); |
| } |
| |
| |
| // Number of pointers to be reserved on stack for fast API call. |
| static const int kFastApiCallArguments = 3; |
| |
| |
| // Reserves space for the extra arguments to API function in the |
| // caller's frame. |
| // |
| // These arguments are set by CheckPrototypes and GenerateFastApiCall. |
| static void ReserveSpaceForFastApiCall(MacroAssembler* masm, Register scratch) { |
| // ----------- S t a t e ------------- |
| // -- esp[0] : return address |
| // -- esp[4] : last argument in the internal frame of the caller |
| // ----------------------------------- |
| __ pop(scratch); |
| for (int i = 0; i < kFastApiCallArguments; i++) { |
| __ push(Immediate(Smi::FromInt(0))); |
| } |
| __ push(scratch); |
| } |
| |
| |
| // Undoes the effects of ReserveSpaceForFastApiCall. |
| static void FreeSpaceForFastApiCall(MacroAssembler* masm, Register scratch) { |
| // ----------- S t a t e ------------- |
| // -- esp[0] : return address. |
| // -- esp[4] : last fast api call extra argument. |
| // -- ... |
| // -- esp[kFastApiCallArguments * 4] : first fast api call extra argument. |
| // -- esp[kFastApiCallArguments * 4 + 4] : last argument in the internal |
| // frame. |
| // ----------------------------------- |
| __ pop(scratch); |
| __ add(Operand(esp), Immediate(kPointerSize * kFastApiCallArguments)); |
| __ push(scratch); |
| } |
| |
| |
| // Generates call to API function. |
| static bool GenerateFastApiCall(MacroAssembler* masm, |
| const CallOptimization& optimization, |
| int argc, |
| Failure** failure) { |
| // ----------- S t a t e ------------- |
| // -- esp[0] : return address |
| // -- esp[4] : object passing the type check |
| // (last fast api call extra argument, |
| // set by CheckPrototypes) |
| // -- esp[8] : api function |
| // (first fast api call extra argument) |
| // -- esp[12] : api call data |
| // -- esp[16] : last argument |
| // -- ... |
| // -- esp[(argc + 3) * 4] : first argument |
| // -- esp[(argc + 4) * 4] : receiver |
| // ----------------------------------- |
| // Get the function and setup the context. |
| JSFunction* function = optimization.constant_function(); |
| __ mov(edi, Immediate(Handle<JSFunction>(function))); |
| __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| |
| // Pass the additional arguments. |
| __ mov(Operand(esp, 2 * kPointerSize), edi); |
| Object* call_data = optimization.api_call_info()->data(); |
| Handle<CallHandlerInfo> api_call_info_handle(optimization.api_call_info()); |
| if (Heap::InNewSpace(call_data)) { |
| __ mov(ecx, api_call_info_handle); |
| __ mov(ebx, FieldOperand(ecx, CallHandlerInfo::kDataOffset)); |
| __ mov(Operand(esp, 3 * kPointerSize), ebx); |
| } else { |
| __ mov(Operand(esp, 3 * kPointerSize), |
| Immediate(Handle<Object>(call_data))); |
| } |
| |
| // Prepare arguments. |
| __ lea(eax, Operand(esp, 3 * kPointerSize)); |
| |
| Object* callback = optimization.api_call_info()->callback(); |
| Address api_function_address = v8::ToCData<Address>(callback); |
| ApiFunction fun(api_function_address); |
| |
| const int kApiArgc = 1; // API function gets reference to the v8::Arguments. |
| |
| // Allocate the v8::Arguments structure in the arguments' space since |
| // it's not controlled by GC. |
| const int kApiStackSpace = 4; |
| |
| __ PrepareCallApiFunction(kApiArgc + kApiStackSpace, ebx); |
| |
| __ mov(ApiParameterOperand(1), eax); // v8::Arguments::implicit_args_. |
| __ add(Operand(eax), Immediate(argc * kPointerSize)); |
| __ mov(ApiParameterOperand(2), eax); // v8::Arguments::values_. |
| __ Set(ApiParameterOperand(3), Immediate(argc)); // v8::Arguments::length_. |
| // v8::Arguments::is_construct_call_. |
| __ Set(ApiParameterOperand(4), Immediate(0)); |
| |
| // v8::InvocationCallback's argument. |
| __ lea(eax, ApiParameterOperand(1)); |
| __ mov(ApiParameterOperand(0), eax); |
| |
| // Emitting a stub call may try to allocate (if the code is not |
| // already generated). Do not allow the assembler to perform a |
| // garbage collection but instead return the allocation failure |
| // object. |
| MaybeObject* result = |
| masm->TryCallApiFunctionAndReturn(&fun, argc + kFastApiCallArguments + 1); |
| if (result->IsFailure()) { |
| *failure = Failure::cast(result); |
| return false; |
| } |
| return true; |
| } |
| |
| |
| class CallInterceptorCompiler BASE_EMBEDDED { |
| public: |
| CallInterceptorCompiler(StubCompiler* stub_compiler, |
| const ParameterCount& arguments, |
| Register name) |
| : stub_compiler_(stub_compiler), |
| arguments_(arguments), |
| name_(name) {} |
| |
| bool Compile(MacroAssembler* masm, |
| JSObject* object, |
| JSObject* holder, |
| String* name, |
| LookupResult* lookup, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| Label* miss, |
| Failure** failure) { |
| ASSERT(holder->HasNamedInterceptor()); |
| ASSERT(!holder->GetNamedInterceptor()->getter()->IsUndefined()); |
| |
| // Check that the receiver isn't a smi. |
| __ test(receiver, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| |
| CallOptimization optimization(lookup); |
| |
| if (optimization.is_constant_call()) { |
| return CompileCacheable(masm, |
| object, |
| receiver, |
| scratch1, |
| scratch2, |
| scratch3, |
| holder, |
| lookup, |
| name, |
| optimization, |
| miss, |
| failure); |
| } else { |
| CompileRegular(masm, |
| object, |
| receiver, |
| scratch1, |
| scratch2, |
| scratch3, |
| name, |
| holder, |
| miss); |
| return true; |
| } |
| } |
| |
| private: |
| bool CompileCacheable(MacroAssembler* masm, |
| JSObject* object, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| JSObject* interceptor_holder, |
| LookupResult* lookup, |
| String* name, |
| const CallOptimization& optimization, |
| Label* miss_label, |
| Failure** failure) { |
| ASSERT(optimization.is_constant_call()); |
| ASSERT(!lookup->holder()->IsGlobalObject()); |
| |
| int depth1 = kInvalidProtoDepth; |
| int depth2 = kInvalidProtoDepth; |
| bool can_do_fast_api_call = false; |
| if (optimization.is_simple_api_call() && |
| !lookup->holder()->IsGlobalObject()) { |
| depth1 = |
| optimization.GetPrototypeDepthOfExpectedType(object, |
| interceptor_holder); |
| if (depth1 == kInvalidProtoDepth) { |
| depth2 = |
| optimization.GetPrototypeDepthOfExpectedType(interceptor_holder, |
| lookup->holder()); |
| } |
| can_do_fast_api_call = (depth1 != kInvalidProtoDepth) || |
| (depth2 != kInvalidProtoDepth); |
| } |
| |
| __ IncrementCounter(&Counters::call_const_interceptor, 1); |
| |
| if (can_do_fast_api_call) { |
| __ IncrementCounter(&Counters::call_const_interceptor_fast_api, 1); |
| ReserveSpaceForFastApiCall(masm, scratch1); |
| } |
| |
| // Check that the maps from receiver to interceptor's holder |
| // haven't changed and thus we can invoke interceptor. |
| Label miss_cleanup; |
| Label* miss = can_do_fast_api_call ? &miss_cleanup : miss_label; |
| Register holder = |
| stub_compiler_->CheckPrototypes(object, receiver, |
| interceptor_holder, scratch1, |
| scratch2, scratch3, name, depth1, miss); |
| |
| // Invoke an interceptor and if it provides a value, |
| // branch to |regular_invoke|. |
| Label regular_invoke; |
| LoadWithInterceptor(masm, receiver, holder, interceptor_holder, |
| ®ular_invoke); |
| |
| // Interceptor returned nothing for this property. Try to use cached |
| // constant function. |
| |
| // Check that the maps from interceptor's holder to constant function's |
| // holder haven't changed and thus we can use cached constant function. |
| if (interceptor_holder != lookup->holder()) { |
| stub_compiler_->CheckPrototypes(interceptor_holder, receiver, |
| lookup->holder(), scratch1, |
| scratch2, scratch3, name, depth2, miss); |
| } else { |
| // CheckPrototypes has a side effect of fetching a 'holder' |
| // for API (object which is instanceof for the signature). It's |
| // safe to omit it here, as if present, it should be fetched |
| // by the previous CheckPrototypes. |
| ASSERT(depth2 == kInvalidProtoDepth); |
| } |
| |
| // Invoke function. |
| if (can_do_fast_api_call) { |
| bool success = GenerateFastApiCall(masm, optimization, |
| arguments_.immediate(), failure); |
| if (!success) { |
| return false; |
| } |
| } else { |
| __ InvokeFunction(optimization.constant_function(), arguments_, |
| JUMP_FUNCTION); |
| } |
| |
| // Deferred code for fast API call case---clean preallocated space. |
| if (can_do_fast_api_call) { |
| __ bind(&miss_cleanup); |
| FreeSpaceForFastApiCall(masm, scratch1); |
| __ jmp(miss_label); |
| } |
| |
| // Invoke a regular function. |
| __ bind(®ular_invoke); |
| if (can_do_fast_api_call) { |
| FreeSpaceForFastApiCall(masm, scratch1); |
| } |
| |
| return true; |
| } |
| |
| void CompileRegular(MacroAssembler* masm, |
| JSObject* object, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| String* name, |
| JSObject* interceptor_holder, |
| Label* miss_label) { |
| Register holder = |
| stub_compiler_->CheckPrototypes(object, receiver, interceptor_holder, |
| scratch1, scratch2, scratch3, name, |
| miss_label); |
| |
| __ EnterInternalFrame(); |
| // Save the name_ register across the call. |
| __ push(name_); |
| |
| PushInterceptorArguments(masm, |
| receiver, |
| holder, |
| name_, |
| interceptor_holder); |
| |
| __ CallExternalReference( |
| ExternalReference( |
| IC_Utility(IC::kLoadPropertyWithInterceptorForCall)), |
| 5); |
| |
| // Restore the name_ register. |
| __ pop(name_); |
| __ LeaveInternalFrame(); |
| } |
| |
| void LoadWithInterceptor(MacroAssembler* masm, |
| Register receiver, |
| Register holder, |
| JSObject* holder_obj, |
| Label* interceptor_succeeded) { |
| __ EnterInternalFrame(); |
| __ push(holder); // Save the holder. |
| __ push(name_); // Save the name. |
| |
| CompileCallLoadPropertyWithInterceptor(masm, |
| receiver, |
| holder, |
| name_, |
| holder_obj); |
| |
| __ pop(name_); // Restore the name. |
| __ pop(receiver); // Restore the holder. |
| __ LeaveInternalFrame(); |
| |
| __ cmp(eax, Factory::no_interceptor_result_sentinel()); |
| __ j(not_equal, interceptor_succeeded); |
| } |
| |
| StubCompiler* stub_compiler_; |
| const ParameterCount& arguments_; |
| Register name_; |
| }; |
| |
| |
| 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<Code> ic(code); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| } |
| |
| |
| // Both name_reg and receiver_reg are preserved on jumps to miss_label, |
| // but may be destroyed if store is successful. |
| void StubCompiler::GenerateStoreField(MacroAssembler* masm, |
| 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<Map>(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. |
| __ pop(scratch); // Return address. |
| __ push(receiver_reg); |
| __ push(Immediate(Handle<Map>(transition))); |
| __ push(eax); |
| __ push(scratch); |
| __ TailCallExternalReference( |
| ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage)), 3, 1); |
| 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<Map>(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 + FixedArray::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); |
| } |
| |
| |
| // 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. |
| MUST_USE_RESULT static MaybeObject* GenerateCheckPropertyCell( |
| MacroAssembler* masm, |
| GlobalObject* global, |
| String* name, |
| Register scratch, |
| Label* miss) { |
| Object* probe; |
| { MaybeObject* maybe_probe = global->EnsurePropertyCell(name); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| JSGlobalPropertyCell* cell = JSGlobalPropertyCell::cast(probe); |
| ASSERT(cell->value()->IsTheHole()); |
| if (Serializer::enabled()) { |
| __ mov(scratch, Immediate(Handle<Object>(cell))); |
| __ cmp(FieldOperand(scratch, JSGlobalPropertyCell::kValueOffset), |
| Immediate(Factory::the_hole_value())); |
| } else { |
| __ cmp(Operand::Cell(Handle<JSGlobalPropertyCell>(cell)), |
| Immediate(Factory::the_hole_value())); |
| } |
| __ j(not_equal, miss, not_taken); |
| return cell; |
| } |
| |
| |
| // Calls GenerateCheckPropertyCell for each global object in the prototype chain |
| // from object to (but not including) holder. |
| MUST_USE_RESULT static MaybeObject* GenerateCheckPropertyCells( |
| MacroAssembler* masm, |
| JSObject* object, |
| JSObject* holder, |
| String* name, |
| Register scratch, |
| Label* miss) { |
| JSObject* current = object; |
| while (current != holder) { |
| if (current->IsGlobalObject()) { |
| // Returns a cell or a failure. |
| MaybeObject* result = GenerateCheckPropertyCell( |
| masm, |
| GlobalObject::cast(current), |
| name, |
| scratch, |
| miss); |
| if (result->IsFailure()) return result; |
| } |
| ASSERT(current->IsJSObject()); |
| current = JSObject::cast(current->GetPrototype()); |
| } |
| return NULL; |
| } |
| |
| |
| #undef __ |
| #define __ ACCESS_MASM(masm()) |
| |
| |
| Register StubCompiler::CheckPrototypes(JSObject* object, |
| Register object_reg, |
| JSObject* holder, |
| Register holder_reg, |
| Register scratch1, |
| Register scratch2, |
| String* name, |
| int save_at_depth, |
| Label* miss) { |
| // Make sure there's no overlap between holder and object registers. |
| ASSERT(!scratch1.is(object_reg) && !scratch1.is(holder_reg)); |
| ASSERT(!scratch2.is(object_reg) && !scratch2.is(holder_reg) |
| && !scratch2.is(scratch1)); |
| // Keep track of the current object in register reg. |
| Register reg = object_reg; |
| JSObject* current = object; |
| int depth = 0; |
| |
| if (save_at_depth == depth) { |
| __ mov(Operand(esp, kPointerSize), reg); |
| } |
| |
| // 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 != holder) { |
| depth++; |
| |
| // Only global objects and objects that do not require access |
| // checks are allowed in stubs. |
| ASSERT(current->IsJSGlobalProxy() || !current->IsAccessCheckNeeded()); |
| |
| ASSERT(current->GetPrototype()->IsJSObject()); |
| JSObject* prototype = JSObject::cast(current->GetPrototype()); |
| if (!current->HasFastProperties() && |
| !current->IsJSGlobalObject() && |
| !current->IsJSGlobalProxy()) { |
| if (!name->IsSymbol()) { |
| MaybeObject* maybe_lookup_result = Heap::LookupSymbol(name); |
| Object* lookup_result = NULL; // Initialization to please compiler. |
| if (!maybe_lookup_result->ToObject(&lookup_result)) { |
| set_failure(Failure::cast(maybe_lookup_result)); |
| return reg; |
| } |
| name = String::cast(lookup_result); |
| } |
| ASSERT(current->property_dictionary()->FindEntry(name) == |
| StringDictionary::kNotFound); |
| |
| GenerateDictionaryNegativeLookup(masm(), |
| miss, |
| reg, |
| name, |
| scratch1, |
| scratch2); |
| __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| reg = holder_reg; // from now the object is in holder_reg |
| __ mov(reg, FieldOperand(scratch1, Map::kPrototypeOffset)); |
| } else if (Heap::InNewSpace(prototype)) { |
| // Get the map of the current object. |
| __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| __ cmp(Operand(scratch1), Immediate(Handle<Map>(current->map()))); |
| // Branch on the result of the map check. |
| __ j(not_equal, miss, not_taken); |
| // 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. |
| if (current->IsJSGlobalProxy()) { |
| __ CheckAccessGlobalProxy(reg, scratch1, miss); |
| |
| // Restore scratch register to be the map of the object. |
| // We load the prototype from the map in the scratch register. |
| __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| } |
| // The prototype is in new space; we cannot store a reference |
| // to it in the code. Load it from the map. |
| reg = holder_reg; // from now the object is in holder_reg |
| __ mov(reg, FieldOperand(scratch1, Map::kPrototypeOffset)); |
| } else { |
| // Check the map of the current object. |
| __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(current->map()))); |
| // Branch on the result of the map check. |
| __ j(not_equal, miss, not_taken); |
| // 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. |
| if (current->IsJSGlobalProxy()) { |
| __ CheckAccessGlobalProxy(reg, scratch1, miss); |
| } |
| // The prototype is in old space; load it directly. |
| reg = holder_reg; // from now the object is in holder_reg |
| __ mov(reg, Handle<JSObject>(prototype)); |
| } |
| |
| if (save_at_depth == depth) { |
| __ mov(Operand(esp, kPointerSize), reg); |
| } |
| |
| // Go to the next object in the prototype chain. |
| current = prototype; |
| } |
| ASSERT(current == holder); |
| |
| // Log the check depth. |
| LOG(IntEvent("check-maps-depth", depth + 1)); |
| |
| // Check the holder map. |
| __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(holder->map()))); |
| __ j(not_equal, miss, not_taken); |
| |
| // Perform security check for access to the global object. |
| ASSERT(holder->IsJSGlobalProxy() || !holder->IsAccessCheckNeeded()); |
| if (holder->IsJSGlobalProxy()) { |
| __ CheckAccessGlobalProxy(reg, scratch1, miss); |
| }; |
| |
| // If we've skipped any global objects, it's not enough to verify |
| // that their maps haven't changed. We also need to check that the |
| // property cell for the property is still empty. |
| MaybeObject* result = GenerateCheckPropertyCells(masm(), |
| object, |
| holder, |
| name, |
| scratch1, |
| miss); |
| if (result->IsFailure()) set_failure(Failure::cast(result)); |
| |
| // Return the register containing the holder. |
| return reg; |
| } |
| |
| |
| void StubCompiler::GenerateLoadField(JSObject* object, |
| JSObject* holder, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| int index, |
| String* name, |
| Label* miss) { |
| // Check that the receiver isn't a smi. |
| __ test(receiver, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| |
| // Check the prototype chain. |
| Register reg = |
| CheckPrototypes(object, receiver, holder, |
| scratch1, scratch2, scratch3, name, miss); |
| |
| // Get the value from the properties. |
| GenerateFastPropertyLoad(masm(), eax, reg, holder, index); |
| __ ret(0); |
| } |
| |
| |
| bool StubCompiler::GenerateLoadCallback(JSObject* object, |
| JSObject* holder, |
| Register receiver, |
| Register name_reg, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| AccessorInfo* callback, |
| String* name, |
| Label* miss, |
| Failure** failure) { |
| // Check that the receiver isn't a smi. |
| __ test(receiver, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| |
| // Check that the maps haven't changed. |
| Register reg = |
| CheckPrototypes(object, receiver, holder, scratch1, |
| scratch2, scratch3, name, miss); |
| |
| Handle<AccessorInfo> callback_handle(callback); |
| |
| // Insert additional parameters into the stack frame above return address. |
| ASSERT(!scratch3.is(reg)); |
| __ pop(scratch3); // Get return address to place it below. |
| |
| __ push(receiver); // receiver |
| __ mov(scratch2, Operand(esp)); |
| ASSERT(!scratch2.is(reg)); |
| __ push(reg); // holder |
| // Push data from AccessorInfo. |
| if (Heap::InNewSpace(callback_handle->data())) { |
| __ mov(scratch1, Immediate(callback_handle)); |
| __ push(FieldOperand(scratch1, AccessorInfo::kDataOffset)); |
| } else { |
| __ push(Immediate(Handle<Object>(callback_handle->data()))); |
| } |
| |
| // Save a pointer to where we pushed the arguments pointer. |
| // This will be passed as the const AccessorInfo& to the C++ callback. |
| __ push(scratch2); |
| |
| __ push(name_reg); // name |
| __ mov(ebx, esp); // esp points to reference to name (handler). |
| |
| __ push(scratch3); // Restore return address. |
| |
| // Do call through the api. |
| Address getter_address = v8::ToCData<Address>(callback->getter()); |
| ApiFunction fun(getter_address); |
| |
| // 3 elements array for v8::Agruments::values_, handler for name and pointer |
| // to the values (it considered as smi in GC). |
| const int kStackSpace = 5; |
| const int kApiArgc = 2; |
| |
| __ PrepareCallApiFunction(kApiArgc, eax); |
| __ mov(ApiParameterOperand(0), ebx); // name. |
| __ add(Operand(ebx), Immediate(kPointerSize)); |
| __ mov(ApiParameterOperand(1), ebx); // arguments pointer. |
| |
| // Emitting a stub call may try to allocate (if the code is not |
| // already generated). Do not allow the assembler to perform a |
| // garbage collection but instead return the allocation failure |
| // object. |
| MaybeObject* result = masm()->TryCallApiFunctionAndReturn(&fun, kStackSpace); |
| if (result->IsFailure()) { |
| *failure = Failure::cast(result); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| |
| void StubCompiler::GenerateLoadConstant(JSObject* object, |
| JSObject* holder, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| Object* value, |
| String* name, |
| Label* miss) { |
| // Check that the receiver isn't a smi. |
| __ test(receiver, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| |
| // Check that the maps haven't changed. |
| CheckPrototypes(object, receiver, holder, |
| scratch1, scratch2, scratch3, name, miss); |
| |
| // Return the constant value. |
| __ mov(eax, Handle<Object>(value)); |
| __ ret(0); |
| } |
| |
| |
| void StubCompiler::GenerateLoadInterceptor(JSObject* object, |
| JSObject* interceptor_holder, |
| LookupResult* lookup, |
| Register receiver, |
| Register name_reg, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| String* name, |
| Label* miss) { |
| ASSERT(interceptor_holder->HasNamedInterceptor()); |
| ASSERT(!interceptor_holder->GetNamedInterceptor()->getter()->IsUndefined()); |
| |
| // Check that the receiver isn't a smi. |
| __ test(receiver, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| |
| // So far the most popular follow ups for interceptor loads are FIELD |
| // and CALLBACKS, so inline only them, other cases may be added |
| // later. |
| bool compile_followup_inline = false; |
| if (lookup->IsProperty() && lookup->IsCacheable()) { |
| if (lookup->type() == FIELD) { |
| compile_followup_inline = true; |
| } else if (lookup->type() == CALLBACKS && |
| lookup->GetCallbackObject()->IsAccessorInfo() && |
| AccessorInfo::cast(lookup->GetCallbackObject())->getter() != NULL) { |
| compile_followup_inline = true; |
| } |
| } |
| |
| if (compile_followup_inline) { |
| // 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. |
| Register holder_reg = CheckPrototypes(object, receiver, interceptor_holder, |
| scratch1, scratch2, scratch3, |
| name, miss); |
| ASSERT(holder_reg.is(receiver) || holder_reg.is(scratch1)); |
| |
| // Save necessary data before invoking an interceptor. |
| // Requires a frame to make GC aware of pushed pointers. |
| __ EnterInternalFrame(); |
| |
| if (lookup->type() == CALLBACKS && !receiver.is(holder_reg)) { |
| // CALLBACKS case needs a receiver to be passed into C++ callback. |
| __ push(receiver); |
| } |
| __ push(holder_reg); |
| __ push(name_reg); |
| |
| // 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, |
| name_reg, |
| interceptor_holder); |
| |
| // Check if interceptor provided a value for property. If it's |
| // the case, return immediately. |
| Label interceptor_failed; |
| __ cmp(eax, Factory::no_interceptor_result_sentinel()); |
| __ j(equal, &interceptor_failed); |
| __ LeaveInternalFrame(); |
| __ ret(0); |
| |
| __ bind(&interceptor_failed); |
| __ pop(name_reg); |
| __ pop(holder_reg); |
| if (lookup->type() == CALLBACKS && !receiver.is(holder_reg)) { |
| __ pop(receiver); |
| } |
| |
| __ LeaveInternalFrame(); |
| |
| // Check that the maps from interceptor's holder to lookup's holder |
| // haven't changed. And load lookup's holder into holder_reg. |
| if (interceptor_holder != lookup->holder()) { |
| holder_reg = CheckPrototypes(interceptor_holder, |
| holder_reg, |
| lookup->holder(), |
| scratch1, |
| scratch2, |
| scratch3, |
| name, |
| miss); |
| } |
| |
| if (lookup->type() == FIELD) { |
| // We found FIELD property in prototype chain of interceptor's holder. |
| // Retrieve a field from field's holder. |
| GenerateFastPropertyLoad(masm(), eax, holder_reg, |
| lookup->holder(), lookup->GetFieldIndex()); |
| __ ret(0); |
| } else { |
| // We found CALLBACKS property in prototype chain of interceptor's |
| // holder. |
| ASSERT(lookup->type() == CALLBACKS); |
| ASSERT(lookup->GetCallbackObject()->IsAccessorInfo()); |
| AccessorInfo* callback = AccessorInfo::cast(lookup->GetCallbackObject()); |
| ASSERT(callback != NULL); |
| ASSERT(callback->getter() != NULL); |
| |
| // Tail call to runtime. |
| // Important invariant in CALLBACKS case: the code above must be |
| // structured to never clobber |receiver| register. |
| __ pop(scratch2); // return address |
| __ push(receiver); |
| __ push(holder_reg); |
| __ mov(holder_reg, Immediate(Handle<AccessorInfo>(callback))); |
| __ push(FieldOperand(holder_reg, AccessorInfo::kDataOffset)); |
| __ push(holder_reg); |
| __ push(name_reg); |
| __ push(scratch2); // restore return address |
| |
| ExternalReference ref = |
| ExternalReference(IC_Utility(IC::kLoadCallbackProperty)); |
| __ TailCallExternalReference(ref, 5, 1); |
| } |
| } else { // !compile_followup_inline |
| // Call the runtime system to load the interceptor. |
| // Check that the maps haven't changed. |
| Register holder_reg = |
| CheckPrototypes(object, receiver, interceptor_holder, |
| scratch1, scratch2, scratch3, name, miss); |
| __ pop(scratch2); // save old return address |
| PushInterceptorArguments(masm(), receiver, holder_reg, |
| name_reg, interceptor_holder); |
| __ push(scratch2); // restore old return address |
| |
| ExternalReference ref = ExternalReference( |
| IC_Utility(IC::kLoadPropertyWithInterceptorForLoad)); |
| __ TailCallExternalReference(ref, 5, 1); |
| } |
| } |
| |
| |
| void CallStubCompiler::GenerateNameCheck(String* name, Label* miss) { |
| if (kind_ == Code::KEYED_CALL_IC) { |
| __ cmp(Operand(ecx), Immediate(Handle<String>(name))); |
| __ j(not_equal, miss, not_taken); |
| } |
| } |
| |
| |
| void CallStubCompiler::GenerateGlobalReceiverCheck(JSObject* object, |
| JSObject* holder, |
| String* name, |
| Label* miss) { |
| ASSERT(holder->IsGlobalObject()); |
| |
| // Get the number of arguments. |
| const int argc = arguments().immediate(); |
| |
| // Get the receiver from the stack. |
| __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); |
| |
| // If the object is the holder then we know that it's a global |
| // object which can only happen for contextual calls. In this case, |
| // the receiver cannot be a smi. |
| if (object != holder) { |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| } |
| |
| // Check that the maps haven't changed. |
| CheckPrototypes(object, edx, holder, ebx, eax, edi, name, miss); |
| } |
| |
| |
| void CallStubCompiler::GenerateLoadFunctionFromCell(JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| Label* miss) { |
| // Get the value from the cell. |
| if (Serializer::enabled()) { |
| __ mov(edi, Immediate(Handle<JSGlobalPropertyCell>(cell))); |
| __ mov(edi, FieldOperand(edi, JSGlobalPropertyCell::kValueOffset)); |
| } else { |
| __ mov(edi, Operand::Cell(Handle<JSGlobalPropertyCell>(cell))); |
| } |
| |
| // Check that the cell contains the same function. |
| if (Heap::InNewSpace(function)) { |
| // We can't embed a pointer to a function in new space so we have |
| // to verify that the shared function info is unchanged. This has |
| // the nice side effect that multiple closures based on the same |
| // function can all use this call IC. Before we load through the |
| // function, we have to verify that it still is a function. |
| __ test(edi, Immediate(kSmiTagMask)); |
| __ j(zero, miss, not_taken); |
| __ CmpObjectType(edi, JS_FUNCTION_TYPE, ebx); |
| __ j(not_equal, miss, not_taken); |
| |
| // Check the shared function info. Make sure it hasn't changed. |
| __ cmp(FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset), |
| Immediate(Handle<SharedFunctionInfo>(function->shared()))); |
| __ j(not_equal, miss, not_taken); |
| } else { |
| __ cmp(Operand(edi), Immediate(Handle<JSFunction>(function))); |
| __ j(not_equal, miss, not_taken); |
| } |
| } |
| |
| |
| MaybeObject* CallStubCompiler::GenerateMissBranch() { |
| MaybeObject* maybe_obj = StubCache::ComputeCallMiss(arguments().immediate(), |
| kind_); |
| Object* obj; |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| __ jmp(Handle<Code>(Code::cast(obj)), RelocInfo::CODE_TARGET); |
| return obj; |
| } |
| |
| |
| MUST_USE_RESULT MaybeObject* CallStubCompiler::CompileCallField( |
| JSObject* object, |
| JSObject* holder, |
| int index, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| Label miss; |
| |
| GenerateNameCheck(name, &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 = CheckPrototypes(object, edx, holder, ebx, eax, edi, |
| name, &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); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(FIELD, name); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileArrayPushCall(Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| // If object is not an array, bail out to regular call. |
| if (!object->IsJSArray() || cell != NULL) return Heap::undefined_value(); |
| |
| Label miss; |
| |
| GenerateNameCheck(name, &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); |
| |
| CheckPrototypes(JSObject::cast(object), edx, |
| holder, ebx, |
| eax, edi, name, &miss); |
| |
| if (argc == 0) { |
| // Noop, return the length. |
| __ mov(eax, FieldOperand(edx, JSArray::kLengthOffset)); |
| __ ret((argc + 1) * kPointerSize); |
| } else { |
| Label call_builtin; |
| |
| // Get the elements array of the object. |
| __ mov(ebx, FieldOperand(edx, JSArray::kElementsOffset)); |
| |
| // Check that the elements are in fast mode and writable. |
| __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), |
| Immediate(Factory::fixed_array_map())); |
| __ j(not_equal, &call_builtin); |
| |
| if (argc == 1) { // Otherwise fall through to call builtin. |
| Label exit, with_write_barrier, attempt_to_grow_elements; |
| |
| // Get the array's length into eax and calculate new length. |
| __ mov(eax, FieldOperand(edx, JSArray::kLengthOffset)); |
| STATIC_ASSERT(kSmiTagSize == 1); |
| STATIC_ASSERT(kSmiTag == 0); |
| __ add(Operand(eax), Immediate(Smi::FromInt(argc))); |
| |
| // Get the element's length into ecx. |
| __ mov(ecx, FieldOperand(ebx, FixedArray::kLengthOffset)); |
| |
| // Check if we could survive without allocation. |
| __ cmp(eax, Operand(ecx)); |
| __ j(greater, &attempt_to_grow_elements); |
| |
| // Save new length. |
| __ mov(FieldOperand(edx, JSArray::kLengthOffset), eax); |
| |
| // Push the element. |
| __ lea(edx, FieldOperand(ebx, |
| eax, times_half_pointer_size, |
| FixedArray::kHeaderSize - argc * kPointerSize)); |
| __ mov(ecx, Operand(esp, argc * kPointerSize)); |
| __ mov(Operand(edx, 0), ecx); |
| |
| // Check if value is a smi. |
| __ test(ecx, Immediate(kSmiTagMask)); |
| __ j(not_zero, &with_write_barrier); |
| |
| __ bind(&exit); |
| __ ret((argc + 1) * kPointerSize); |
| |
| __ bind(&with_write_barrier); |
| |
| __ InNewSpace(ebx, ecx, equal, &exit); |
| |
| __ RecordWriteHelper(ebx, edx, ecx); |
| __ ret((argc + 1) * kPointerSize); |
| |
| __ bind(&attempt_to_grow_elements); |
| if (!FLAG_inline_new) { |
| __ jmp(&call_builtin); |
| } |
| |
| ExternalReference new_space_allocation_top = |
| ExternalReference::new_space_allocation_top_address(); |
| ExternalReference new_space_allocation_limit = |
| ExternalReference::new_space_allocation_limit_address(); |
| |
| const int kAllocationDelta = 4; |
| // Load top. |
| __ mov(ecx, Operand::StaticVariable(new_space_allocation_top)); |
| |
| // Check if it's the end of elements. |
| __ lea(edx, FieldOperand(ebx, |
| eax, times_half_pointer_size, |
| FixedArray::kHeaderSize - argc * kPointerSize)); |
| __ cmp(edx, Operand(ecx)); |
| __ j(not_equal, &call_builtin); |
| __ add(Operand(ecx), Immediate(kAllocationDelta * kPointerSize)); |
| __ cmp(ecx, Operand::StaticVariable(new_space_allocation_limit)); |
| __ j(above, &call_builtin); |
| |
| // We fit and could grow elements. |
| __ mov(Operand::StaticVariable(new_space_allocation_top), ecx); |
| __ mov(ecx, Operand(esp, argc * kPointerSize)); |
| |
| // Push the argument... |
| __ mov(Operand(edx, 0), ecx); |
| // ... and fill the rest with holes. |
| for (int i = 1; i < kAllocationDelta; i++) { |
| __ mov(Operand(edx, i * kPointerSize), |
| Immediate(Factory::the_hole_value())); |
| } |
| |
| // Restore receiver to edx as finish sequence assumes it's here. |
| __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); |
| |
| // Increment element's and array's sizes. |
| __ add(FieldOperand(ebx, FixedArray::kLengthOffset), |
| Immediate(Smi::FromInt(kAllocationDelta))); |
| __ mov(FieldOperand(edx, JSArray::kLengthOffset), eax); |
| |
| // Elements are in new space, so write barrier is not required. |
| __ ret((argc + 1) * kPointerSize); |
| } |
| |
| __ bind(&call_builtin); |
| __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPush), |
| argc + 1, |
| 1); |
| } |
| |
| __ bind(&miss); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(function); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileArrayPopCall(Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| // If object is not an array, bail out to regular call. |
| if (!object->IsJSArray() || cell != NULL) return Heap::undefined_value(); |
| |
| Label miss, return_undefined, call_builtin; |
| |
| GenerateNameCheck(name, &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); |
| CheckPrototypes(JSObject::cast(object), edx, |
| holder, ebx, |
| eax, edi, name, &miss); |
| |
| // Get the elements array of the object. |
| __ mov(ebx, FieldOperand(edx, JSArray::kElementsOffset)); |
| |
| // Check that the elements are in fast mode and writable. |
| __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), |
| Immediate(Factory::fixed_array_map())); |
| __ j(not_equal, &call_builtin); |
| |
| // Get the array's length into ecx and calculate new length. |
| __ mov(ecx, FieldOperand(edx, JSArray::kLengthOffset)); |
| __ sub(Operand(ecx), Immediate(Smi::FromInt(1))); |
| __ j(negative, &return_undefined); |
| |
| // Get the last element. |
| STATIC_ASSERT(kSmiTagSize == 1); |
| STATIC_ASSERT(kSmiTag == 0); |
| __ mov(eax, FieldOperand(ebx, |
| ecx, times_half_pointer_size, |
| FixedArray::kHeaderSize)); |
| __ cmp(Operand(eax), Immediate(Factory::the_hole_value())); |
| __ j(equal, &call_builtin); |
| |
| // Set the array's length. |
| __ mov(FieldOperand(edx, JSArray::kLengthOffset), ecx); |
| |
| // Fill with the hole. |
| __ mov(FieldOperand(ebx, |
| ecx, times_half_pointer_size, |
| FixedArray::kHeaderSize), |
| Immediate(Factory::the_hole_value())); |
| __ ret((argc + 1) * kPointerSize); |
| |
| __ bind(&return_undefined); |
| __ mov(eax, Immediate(Factory::undefined_value())); |
| __ ret((argc + 1) * kPointerSize); |
| |
| __ bind(&call_builtin); |
| __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPop), |
| argc + 1, |
| 1); |
| |
| __ bind(&miss); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(function); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileStringCharCodeAtCall( |
| Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : function name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| // If object is not a string, bail out to regular call. |
| if (!object->IsString() || cell != NULL) return Heap::undefined_value(); |
| |
| const int argc = arguments().immediate(); |
| |
| Label miss; |
| Label name_miss; |
| Label index_out_of_range; |
| Label* index_out_of_range_label = &index_out_of_range; |
| |
| if (kind_ == Code::CALL_IC && extra_ic_state_ == DEFAULT_STRING_STUB) { |
| index_out_of_range_label = &miss; |
| } |
| |
| GenerateNameCheck(name, &name_miss); |
| |
| // Check that the maps starting from the prototype haven't changed. |
| GenerateDirectLoadGlobalFunctionPrototype(masm(), |
| Context::STRING_FUNCTION_INDEX, |
| eax, |
| &miss); |
| ASSERT(object != holder); |
| CheckPrototypes(JSObject::cast(object->GetPrototype()), eax, holder, |
| ebx, edx, edi, name, &miss); |
| |
| Register receiver = ebx; |
| Register index = edi; |
| Register scratch = edx; |
| Register result = eax; |
| __ mov(receiver, Operand(esp, (argc + 1) * kPointerSize)); |
| if (argc > 0) { |
| __ mov(index, Operand(esp, (argc - 0) * kPointerSize)); |
| } else { |
| __ Set(index, Immediate(Factory::undefined_value())); |
| } |
| |
| StringCharCodeAtGenerator char_code_at_generator(receiver, |
| index, |
| scratch, |
| result, |
| &miss, // When not a string. |
| &miss, // When not a number. |
| index_out_of_range_label, |
| STRING_INDEX_IS_NUMBER); |
| char_code_at_generator.GenerateFast(masm()); |
| __ ret((argc + 1) * kPointerSize); |
| |
| StubRuntimeCallHelper call_helper; |
| char_code_at_generator.GenerateSlow(masm(), call_helper); |
| |
| if (index_out_of_range.is_linked()) { |
| __ bind(&index_out_of_range); |
| __ Set(eax, Immediate(Factory::nan_value())); |
| __ ret((argc + 1) * kPointerSize); |
| } |
| |
| __ bind(&miss); |
| // Restore function name in ecx. |
| __ Set(ecx, Immediate(Handle<String>(name))); |
| __ bind(&name_miss); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(function); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileStringCharAtCall( |
| Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : function name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| // If object is not a string, bail out to regular call. |
| if (!object->IsString() || cell != NULL) return Heap::undefined_value(); |
| |
| const int argc = arguments().immediate(); |
| |
| Label miss; |
| Label name_miss; |
| Label index_out_of_range; |
| Label* index_out_of_range_label = &index_out_of_range; |
| |
| if (kind_ == Code::CALL_IC && extra_ic_state_ == DEFAULT_STRING_STUB) { |
| index_out_of_range_label = &miss; |
| } |
| |
| GenerateNameCheck(name, &name_miss); |
| |
| // Check that the maps starting from the prototype haven't changed. |
| GenerateDirectLoadGlobalFunctionPrototype(masm(), |
| Context::STRING_FUNCTION_INDEX, |
| eax, |
| &miss); |
| ASSERT(object != holder); |
| CheckPrototypes(JSObject::cast(object->GetPrototype()), eax, holder, |
| ebx, edx, edi, name, &miss); |
| |
| Register receiver = eax; |
| Register index = edi; |
| Register scratch1 = ebx; |
| Register scratch2 = edx; |
| Register result = eax; |
| __ mov(receiver, Operand(esp, (argc + 1) * kPointerSize)); |
| if (argc > 0) { |
| __ mov(index, Operand(esp, (argc - 0) * kPointerSize)); |
| } else { |
| __ Set(index, Immediate(Factory::undefined_value())); |
| } |
| |
| StringCharAtGenerator char_at_generator(receiver, |
| index, |
| scratch1, |
| scratch2, |
| result, |
| &miss, // When not a string. |
| &miss, // When not a number. |
| index_out_of_range_label, |
| STRING_INDEX_IS_NUMBER); |
| char_at_generator.GenerateFast(masm()); |
| __ ret((argc + 1) * kPointerSize); |
| |
| StubRuntimeCallHelper call_helper; |
| char_at_generator.GenerateSlow(masm(), call_helper); |
| |
| if (index_out_of_range.is_linked()) { |
| __ bind(&index_out_of_range); |
| __ Set(eax, Immediate(Factory::empty_string())); |
| __ ret((argc + 1) * kPointerSize); |
| } |
| |
| __ bind(&miss); |
| // Restore function name in ecx. |
| __ Set(ecx, Immediate(Handle<String>(name))); |
| __ bind(&name_miss); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(function); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileStringFromCharCodeCall( |
| Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : function name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| const int argc = arguments().immediate(); |
| |
| // If the object is not a JSObject or we got an unexpected number of |
| // arguments, bail out to the regular call. |
| if (!object->IsJSObject() || argc != 1) return Heap::undefined_value(); |
| |
| Label miss; |
| GenerateNameCheck(name, &miss); |
| |
| if (cell == NULL) { |
| __ mov(edx, Operand(esp, 2 * kPointerSize)); |
| |
| STATIC_ASSERT(kSmiTag == 0); |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss); |
| |
| CheckPrototypes(JSObject::cast(object), edx, holder, ebx, eax, edi, name, |
| &miss); |
| } else { |
| ASSERT(cell->value() == function); |
| GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss); |
| GenerateLoadFunctionFromCell(cell, function, &miss); |
| } |
| |
| // Load the char code argument. |
| Register code = ebx; |
| __ mov(code, Operand(esp, 1 * kPointerSize)); |
| |
| // Check the code is a smi. |
| Label slow; |
| STATIC_ASSERT(kSmiTag == 0); |
| __ test(code, Immediate(kSmiTagMask)); |
| __ j(not_zero, &slow); |
| |
| // Convert the smi code to uint16. |
| __ and_(code, Immediate(Smi::FromInt(0xffff))); |
| |
| StringCharFromCodeGenerator char_from_code_generator(code, eax); |
| char_from_code_generator.GenerateFast(masm()); |
| __ ret(2 * kPointerSize); |
| |
| StubRuntimeCallHelper call_helper; |
| char_from_code_generator.GenerateSlow(masm(), call_helper); |
| |
| // Tail call the full function. We do not have to patch the receiver |
| // because the function makes no use of it. |
| __ bind(&slow); |
| __ InvokeFunction(function, arguments(), JUMP_FUNCTION); |
| |
| __ bind(&miss); |
| // ecx: function name. |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileMathFloorCall(Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| if (!CpuFeatures::IsSupported(SSE2)) return Heap::undefined_value(); |
| CpuFeatures::Scope use_sse2(SSE2); |
| |
| const int argc = arguments().immediate(); |
| |
| // If the object is not a JSObject or we got an unexpected number of |
| // arguments, bail out to the regular call. |
| if (!object->IsJSObject() || argc != 1) return Heap::undefined_value(); |
| |
| Label miss; |
| GenerateNameCheck(name, &miss); |
| |
| if (cell == NULL) { |
| __ mov(edx, Operand(esp, 2 * kPointerSize)); |
| |
| STATIC_ASSERT(kSmiTag == 0); |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss); |
| |
| CheckPrototypes(JSObject::cast(object), edx, holder, ebx, eax, edi, name, |
| &miss); |
| } else { |
| ASSERT(cell->value() == function); |
| GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss); |
| GenerateLoadFunctionFromCell(cell, function, &miss); |
| } |
| |
| // Load the (only) argument into eax. |
| __ mov(eax, Operand(esp, 1 * kPointerSize)); |
| |
| // Check if the argument is a smi. |
| Label smi; |
| STATIC_ASSERT(kSmiTag == 0); |
| __ test(eax, Immediate(kSmiTagMask)); |
| __ j(zero, &smi); |
| |
| // Check if the argument is a heap number and load its value into xmm0. |
| Label slow; |
| __ CheckMap(eax, Factory::heap_number_map(), &slow, true); |
| __ movdbl(xmm0, FieldOperand(eax, HeapNumber::kValueOffset)); |
| |
| // Check if the argument is strictly positive. Note this also |
| // discards NaN. |
| __ xorpd(xmm1, xmm1); |
| __ ucomisd(xmm0, xmm1); |
| __ j(below_equal, &slow); |
| |
| // Do a truncating conversion. |
| __ cvttsd2si(eax, Operand(xmm0)); |
| |
| // Check if the result fits into a smi. Note this also checks for |
| // 0x80000000 which signals a failed conversion. |
| Label wont_fit_into_smi; |
| __ test(eax, Immediate(0xc0000000)); |
| __ j(not_zero, &wont_fit_into_smi); |
| |
| // Smi tag and return. |
| __ SmiTag(eax); |
| __ bind(&smi); |
| __ ret(2 * kPointerSize); |
| |
| // Check if the argument is < 2^kMantissaBits. |
| Label already_round; |
| __ bind(&wont_fit_into_smi); |
| __ LoadPowerOf2(xmm1, ebx, HeapNumber::kMantissaBits); |
| __ ucomisd(xmm0, xmm1); |
| __ j(above_equal, &already_round); |
| |
| // Save a copy of the argument. |
| __ movaps(xmm2, xmm0); |
| |
| // Compute (argument + 2^kMantissaBits) - 2^kMantissaBits. |
| __ addsd(xmm0, xmm1); |
| __ subsd(xmm0, xmm1); |
| |
| // Compare the argument and the tentative result to get the right mask: |
| // if xmm2 < xmm0: |
| // xmm2 = 1...1 |
| // else: |
| // xmm2 = 0...0 |
| __ cmpltsd(xmm2, xmm0); |
| |
| // Subtract 1 if the argument was less than the tentative result. |
| __ LoadPowerOf2(xmm1, ebx, 0); |
| __ andpd(xmm1, xmm2); |
| __ subsd(xmm0, xmm1); |
| |
| // Return a new heap number. |
| __ AllocateHeapNumber(eax, ebx, edx, &slow); |
| __ movdbl(FieldOperand(eax, HeapNumber::kValueOffset), xmm0); |
| __ ret(2 * kPointerSize); |
| |
| // Return the argument (when it's an already round heap number). |
| __ bind(&already_round); |
| __ mov(eax, Operand(esp, 1 * kPointerSize)); |
| __ ret(2 * kPointerSize); |
| |
| // Tail call the full function. We do not have to patch the receiver |
| // because the function makes no use of it. |
| __ bind(&slow); |
| __ InvokeFunction(function, arguments(), JUMP_FUNCTION); |
| |
| __ bind(&miss); |
| // ecx: function name. |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileMathAbsCall(Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| const int argc = arguments().immediate(); |
| |
| // If the object is not a JSObject or we got an unexpected number of |
| // arguments, bail out to the regular call. |
| if (!object->IsJSObject() || argc != 1) return Heap::undefined_value(); |
| |
| Label miss; |
| GenerateNameCheck(name, &miss); |
| |
| if (cell == NULL) { |
| __ mov(edx, Operand(esp, 2 * kPointerSize)); |
| |
| STATIC_ASSERT(kSmiTag == 0); |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss); |
| |
| CheckPrototypes(JSObject::cast(object), edx, holder, ebx, eax, edi, name, |
| &miss); |
| } else { |
| ASSERT(cell->value() == function); |
| GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss); |
| GenerateLoadFunctionFromCell(cell, function, &miss); |
| } |
| |
| // Load the (only) argument into eax. |
| __ mov(eax, Operand(esp, 1 * kPointerSize)); |
| |
| // Check if the argument is a smi. |
| Label not_smi; |
| STATIC_ASSERT(kSmiTag == 0); |
| __ test(eax, Immediate(kSmiTagMask)); |
| __ j(not_zero, ¬_smi); |
| |
| // Set ebx to 1...1 (== -1) if the argument is negative, or to 0...0 |
| // otherwise. |
| __ mov(ebx, eax); |
| __ sar(ebx, kBitsPerInt - 1); |
| |
| // Do bitwise not or do nothing depending on ebx. |
| __ xor_(eax, Operand(ebx)); |
| |
| // Add 1 or do nothing depending on ebx. |
| __ sub(eax, Operand(ebx)); |
| |
| // If the result is still negative, go to the slow case. |
| // This only happens for the most negative smi. |
| Label slow; |
| __ j(negative, &slow); |
| |
| // Smi case done. |
| __ ret(2 * kPointerSize); |
| |
| // Check if the argument is a heap number and load its exponent and |
| // sign into ebx. |
| __ bind(¬_smi); |
| __ CheckMap(eax, Factory::heap_number_map(), &slow, true); |
| __ mov(ebx, FieldOperand(eax, HeapNumber::kExponentOffset)); |
| |
| // Check the sign of the argument. If the argument is positive, |
| // just return it. |
| Label negative_sign; |
| __ test(ebx, Immediate(HeapNumber::kSignMask)); |
| __ j(not_zero, &negative_sign); |
| __ ret(2 * kPointerSize); |
| |
| // If the argument is negative, clear the sign, and return a new |
| // number. |
| __ bind(&negative_sign); |
| __ and_(ebx, ~HeapNumber::kSignMask); |
| __ mov(ecx, FieldOperand(eax, HeapNumber::kMantissaOffset)); |
| __ AllocateHeapNumber(eax, edi, edx, &slow); |
| __ mov(FieldOperand(eax, HeapNumber::kExponentOffset), ebx); |
| __ mov(FieldOperand(eax, HeapNumber::kMantissaOffset), ecx); |
| __ ret(2 * kPointerSize); |
| |
| // Tail call the full function. We do not have to patch the receiver |
| // because the function makes no use of it. |
| __ bind(&slow); |
| __ InvokeFunction(function, arguments(), JUMP_FUNCTION); |
| |
| __ bind(&miss); |
| // ecx: function name. |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileCallConstant(Object* object, |
| JSObject* holder, |
| JSFunction* function, |
| String* name, |
| CheckType check) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| SharedFunctionInfo* function_info = function->shared(); |
| if (function_info->HasBuiltinFunctionId()) { |
| BuiltinFunctionId id = function_info->builtin_function_id(); |
| MaybeObject* maybe_result = CompileCustomCall( |
| id, object, holder, NULL, function, name); |
| Object* result; |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| // undefined means bail out to regular compiler. |
| if (!result->IsUndefined()) return result; |
| } |
| |
| Label miss_in_smi_check; |
| |
| GenerateNameCheck(name, &miss_in_smi_check); |
| |
| // 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_in_smi_check, 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); |
| |
| CallOptimization optimization(function); |
| int depth = kInvalidProtoDepth; |
| Label miss; |
| |
| switch (check) { |
| case RECEIVER_MAP_CHECK: |
| __ IncrementCounter(&Counters::call_const, 1); |
| |
| if (optimization.is_simple_api_call() && !object->IsGlobalObject()) { |
| depth = optimization.GetPrototypeDepthOfExpectedType( |
| JSObject::cast(object), holder); |
| } |
| |
| if (depth != kInvalidProtoDepth) { |
| __ IncrementCounter(&Counters::call_const_fast_api, 1); |
| |
| // Allocate space for v8::Arguments implicit values. Must be initialized |
| // before to call any runtime function. |
| __ sub(Operand(esp), Immediate(kFastApiCallArguments * kPointerSize)); |
| } |
| |
| // Check that the maps haven't changed. |
| CheckPrototypes(JSObject::cast(object), edx, holder, |
| ebx, eax, edi, name, depth, &miss); |
| |
| // Patch the receiver on the stack with the global proxy if |
| // necessary. |
| if (object->IsGlobalObject()) { |
| ASSERT(depth == kInvalidProtoDepth); |
| __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset)); |
| __ mov(Operand(esp, (argc + 1) * kPointerSize), edx); |
| } |
| break; |
| |
| case STRING_CHECK: |
| if (!function->IsBuiltin()) { |
| // Calling non-builtins with a value as receiver requires boxing. |
| __ jmp(&miss); |
| } else { |
| // Check that the object is a string or a symbol. |
| __ CmpObjectType(edx, FIRST_NONSTRING_TYPE, eax); |
| __ j(above_equal, &miss, not_taken); |
| // Check that the maps starting from the prototype haven't changed. |
| GenerateDirectLoadGlobalFunctionPrototype( |
| masm(), Context::STRING_FUNCTION_INDEX, eax, &miss); |
| CheckPrototypes(JSObject::cast(object->GetPrototype()), eax, holder, |
| ebx, edx, edi, name, &miss); |
| } |
| break; |
| |
| case NUMBER_CHECK: { |
| if (!function->IsBuiltin()) { |
| // Calling non-builtins with a value as receiver requires boxing. |
| __ jmp(&miss); |
| } else { |
| 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, eax); |
| __ j(not_equal, &miss, not_taken); |
| __ bind(&fast); |
| // Check that the maps starting from the prototype haven't changed. |
| GenerateDirectLoadGlobalFunctionPrototype( |
| masm(), Context::NUMBER_FUNCTION_INDEX, eax, &miss); |
| CheckPrototypes(JSObject::cast(object->GetPrototype()), eax, holder, |
| ebx, edx, edi, name, &miss); |
| } |
| break; |
| } |
| |
| case BOOLEAN_CHECK: { |
| if (!function->IsBuiltin()) { |
| // Calling non-builtins with a value as receiver requires boxing. |
| __ jmp(&miss); |
| } else { |
| 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. |
| GenerateDirectLoadGlobalFunctionPrototype( |
| masm(), Context::BOOLEAN_FUNCTION_INDEX, eax, &miss); |
| CheckPrototypes(JSObject::cast(object->GetPrototype()), eax, holder, |
| ebx, edx, edi, name, &miss); |
| } |
| break; |
| } |
| |
| default: |
| UNREACHABLE(); |
| } |
| |
| if (depth != kInvalidProtoDepth) { |
| Failure* failure; |
| // Move the return address on top of the stack. |
| __ mov(eax, Operand(esp, 3 * kPointerSize)); |
| __ mov(Operand(esp, 0 * kPointerSize), eax); |
| |
| // esp[2 * kPointerSize] is uninitialized, esp[3 * kPointerSize] contains |
| // duplicate of return address and will be overwritten. |
| bool success = GenerateFastApiCall(masm(), optimization, argc, &failure); |
| if (!success) { |
| return failure; |
| } |
| } else { |
| __ InvokeFunction(function, arguments(), JUMP_FUNCTION); |
| } |
| |
| // Handle call cache miss. |
| __ bind(&miss); |
| if (depth != kInvalidProtoDepth) { |
| __ add(Operand(esp), Immediate(kFastApiCallArguments * kPointerSize)); |
| } |
| __ bind(&miss_in_smi_check); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(function); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileCallInterceptor(JSObject* object, |
| JSObject* holder, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| Label miss; |
| |
| GenerateNameCheck(name, &miss); |
| |
| // Get the number of arguments. |
| const int argc = arguments().immediate(); |
| |
| LookupResult lookup; |
| LookupPostInterceptor(holder, name, &lookup); |
| |
| // Get the receiver from the stack. |
| __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); |
| |
| CallInterceptorCompiler compiler(this, arguments(), ecx); |
| Failure* failure; |
| bool success = compiler.Compile(masm(), |
| object, |
| holder, |
| name, |
| &lookup, |
| edx, |
| ebx, |
| edi, |
| eax, |
| &miss, |
| &failure); |
| if (!success) { |
| return failure; |
| } |
| |
| // Restore receiver. |
| __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); |
| |
| // Check that the function really is a function. |
| __ test(eax, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| __ CmpObjectType(eax, 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. |
| __ mov(edi, eax); |
| __ InvokeFunction(edi, arguments(), JUMP_FUNCTION); |
| |
| // Handle load cache miss. |
| __ bind(&miss); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(INTERCEPTOR, name); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileCallGlobal(JSObject* object, |
| GlobalObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- ecx : name |
| // -- esp[0] : return address |
| // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| // -- ... |
| // -- esp[(argc + 1) * 4] : receiver |
| // ----------------------------------- |
| |
| SharedFunctionInfo* function_info = function->shared(); |
| if (function_info->HasBuiltinFunctionId()) { |
| BuiltinFunctionId id = function_info->builtin_function_id(); |
| MaybeObject* maybe_result = CompileCustomCall( |
| id, object, holder, cell, function, name); |
| Object* result; |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| // undefined means bail out to regular compiler. |
| if (!result->IsUndefined()) return result; |
| } |
| |
| Label miss; |
| |
| GenerateNameCheck(name, &miss); |
| |
| // Get the number of arguments. |
| const int argc = arguments().immediate(); |
| |
| GenerateGlobalReceiverCheck(object, holder, name, &miss); |
| |
| GenerateLoadFunctionFromCell(cell, function, &miss); |
| |
| // Patch the receiver on the stack with the global proxy. |
| if (object->IsGlobalObject()) { |
| __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset)); |
| __ mov(Operand(esp, (argc + 1) * kPointerSize), edx); |
| } |
| |
| // Setup the context (function already in edi). |
| __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| |
| // Jump to the cached code (tail call). |
| __ IncrementCounter(&Counters::call_global_inline, 1); |
| ASSERT(function->is_compiled()); |
| ParameterCount expected(function->shared()->formal_parameter_count()); |
| if (V8::UseCrankshaft()) { |
| // TODO(kasperl): For now, we always call indirectly through the |
| // code field in the function to allow recompilation to take effect |
| // without changing any of the call sites. |
| __ InvokeCode(FieldOperand(edi, JSFunction::kCodeEntryOffset), |
| expected, arguments(), JUMP_FUNCTION); |
| } else { |
| Handle<Code> code(function->code()); |
| __ InvokeCode(code, expected, arguments(), |
| RelocInfo::CODE_TARGET, JUMP_FUNCTION); |
| } |
| |
| // Handle call cache miss. |
| __ bind(&miss); |
| __ IncrementCounter(&Counters::call_global_inline_miss, 1); |
| Object* obj; |
| { MaybeObject* maybe_obj = GenerateMissBranch(); |
| if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| } |
| |
| // Return the generated code. |
| return GetCode(NORMAL, name); |
| } |
| |
| |
| MaybeObject* StoreStubCompiler::CompileStoreField(JSObject* object, |
| int index, |
| Map* transition, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : value |
| // -- ecx : name |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Generate store field code. Trashes the name register. |
| GenerateStoreField(masm(), |
| object, |
| index, |
| transition, |
| edx, ecx, ebx, |
| &miss); |
| |
| // Handle store cache miss. |
| __ bind(&miss); |
| __ mov(ecx, Immediate(Handle<String>(name))); // restore name |
| Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Miss)); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); |
| } |
| |
| |
| MaybeObject* StoreStubCompiler::CompileStoreCallback(JSObject* object, |
| AccessorInfo* callback, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : value |
| // -- ecx : name |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Check that the object isn't a smi. |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| |
| // Check that the map of the object hasn't changed. |
| __ cmp(FieldOperand(edx, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(object->map()))); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Perform global security token check if needed. |
| if (object->IsJSGlobalProxy()) { |
| __ CheckAccessGlobalProxy(edx, ebx, &miss); |
| } |
| |
| // Stub never generated for non-global objects that require access |
| // checks. |
| ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded()); |
| |
| __ pop(ebx); // remove the return address |
| __ push(edx); // receiver |
| __ push(Immediate(Handle<AccessorInfo>(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)); |
| __ TailCallExternalReference(store_callback_property, 4, 1); |
| |
| // Handle store cache miss. |
| __ bind(&miss); |
| Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Miss)); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(CALLBACKS, name); |
| } |
| |
| |
| MaybeObject* StoreStubCompiler::CompileStoreInterceptor(JSObject* receiver, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : value |
| // -- ecx : name |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Check that the object isn't a smi. |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| |
| // Check that the map of the object hasn't changed. |
| __ cmp(FieldOperand(edx, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(receiver->map()))); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Perform global security token check if needed. |
| if (receiver->IsJSGlobalProxy()) { |
| __ CheckAccessGlobalProxy(edx, ebx, &miss); |
| } |
| |
| // Stub never generated for non-global objects that require access |
| // checks. |
| ASSERT(receiver->IsJSGlobalProxy() || !receiver->IsAccessCheckNeeded()); |
| |
| __ pop(ebx); // remove the return address |
| __ push(edx); // 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)); |
| __ TailCallExternalReference(store_ic_property, 3, 1); |
| |
| // Handle store cache miss. |
| __ bind(&miss); |
| Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Miss)); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(INTERCEPTOR, name); |
| } |
| |
| |
| MaybeObject* StoreStubCompiler::CompileStoreGlobal(GlobalObject* object, |
| JSGlobalPropertyCell* cell, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : value |
| // -- ecx : name |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Check that the map of the global has not changed. |
| __ cmp(FieldOperand(edx, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(object->map()))); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Store the value in the cell. |
| if (Serializer::enabled()) { |
| __ mov(ecx, Immediate(Handle<JSGlobalPropertyCell>(cell))); |
| __ mov(FieldOperand(ecx, JSGlobalPropertyCell::kValueOffset), eax); |
| } else { |
| __ mov(Operand::Cell(Handle<JSGlobalPropertyCell>(cell)), eax); |
| } |
| |
| // Return the value (register eax). |
| __ IncrementCounter(&Counters::named_store_global_inline, 1); |
| __ ret(0); |
| |
| // Handle store cache miss. |
| __ bind(&miss); |
| __ IncrementCounter(&Counters::named_store_global_inline_miss, 1); |
| Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Miss)); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(NORMAL, name); |
| } |
| |
| |
| MaybeObject* KeyedStoreStubCompiler::CompileStoreField(JSObject* object, |
| int index, |
| Map* transition, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : value |
| // -- ecx : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_store_field, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(ecx), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Generate store field code. Trashes the name register. |
| GenerateStoreField(masm(), |
| object, |
| index, |
| transition, |
| edx, ecx, ebx, |
| &miss); |
| |
| // Handle store cache miss. |
| __ bind(&miss); |
| __ DecrementCounter(&Counters::keyed_store_field, 1); |
| Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Miss)); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); |
| } |
| |
| |
| MaybeObject* KeyedStoreStubCompiler::CompileStoreSpecialized( |
| JSObject* receiver) { |
| // ----------- S t a t e ------------- |
| // -- eax : value |
| // -- ecx : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Check that the receiver isn't a smi. |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| |
| // Check that the map matches. |
| __ cmp(FieldOperand(edx, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(receiver->map()))); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Check that the key is a smi. |
| __ test(ecx, Immediate(kSmiTagMask)); |
| __ j(not_zero, &miss, not_taken); |
| |
| // Get the elements array and make sure it is a fast element array, not 'cow'. |
| __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); |
| __ cmp(FieldOperand(edi, HeapObject::kMapOffset), |
| Immediate(Factory::fixed_array_map())); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Check that the key is within bounds. |
| if (receiver->IsJSArray()) { |
| __ cmp(ecx, FieldOperand(edx, JSArray::kLengthOffset)); // Compare smis. |
| __ j(above_equal, &miss, not_taken); |
| } else { |
| __ cmp(ecx, FieldOperand(edi, FixedArray::kLengthOffset)); // Compare smis. |
| __ j(above_equal, &miss, not_taken); |
| } |
| |
| // Do the store and update the write barrier. Make sure to preserve |
| // the value in register eax. |
| __ mov(edx, Operand(eax)); |
| __ mov(FieldOperand(edi, ecx, times_2, FixedArray::kHeaderSize), eax); |
| __ RecordWrite(edi, 0, edx, ecx); |
| |
| // Done. |
| __ ret(0); |
| |
| // Handle store cache miss. |
| __ bind(&miss); |
| Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Miss)); |
| __ jmp(ic, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(NORMAL, NULL); |
| } |
| |
| |
| MaybeObject* LoadStubCompiler::CompileLoadNonexistent(String* name, |
| JSObject* object, |
| JSObject* last) { |
| // ----------- S t a t e ------------- |
| // -- eax : receiver |
| // -- ecx : name |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Check that the receiver isn't a smi. |
| __ test(eax, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| |
| ASSERT(last->IsGlobalObject() || last->HasFastProperties()); |
| |
| // Check the maps of the full prototype chain. Also check that |
| // global property cells up to (but not including) the last object |
| // in the prototype chain are empty. |
| CheckPrototypes(object, eax, last, ebx, edx, edi, name, &miss); |
| |
| // If the last object in the prototype chain is a global object, |
| // check that the global property cell is empty. |
| if (last->IsGlobalObject()) { |
| MaybeObject* cell = GenerateCheckPropertyCell(masm(), |
| GlobalObject::cast(last), |
| name, |
| edx, |
| &miss); |
| if (cell->IsFailure()) { |
| miss.Unuse(); |
| return cell; |
| } |
| } |
| |
| // Return undefined if maps of the full prototype chain are still the |
| // same and no global property with this name contains a value. |
| __ mov(eax, Factory::undefined_value()); |
| __ ret(0); |
| |
| __ bind(&miss); |
| GenerateLoadMiss(masm(), Code::LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(NONEXISTENT, Heap::empty_string()); |
| } |
| |
| |
| MaybeObject* LoadStubCompiler::CompileLoadField(JSObject* object, |
| JSObject* holder, |
| int index, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : receiver |
| // -- ecx : name |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| GenerateLoadField(object, holder, eax, ebx, edx, edi, index, name, &miss); |
| __ bind(&miss); |
| GenerateLoadMiss(masm(), Code::LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(FIELD, name); |
| } |
| |
| |
| MaybeObject* LoadStubCompiler::CompileLoadCallback(String* name, |
| JSObject* object, |
| JSObject* holder, |
| AccessorInfo* callback) { |
| // ----------- S t a t e ------------- |
| // -- eax : receiver |
| // -- ecx : name |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| Failure* failure = Failure::InternalError(); |
| bool success = GenerateLoadCallback(object, holder, eax, ecx, ebx, edx, edi, |
| callback, name, &miss, &failure); |
| if (!success) { |
| miss.Unuse(); |
| return failure; |
| } |
| |
| __ bind(&miss); |
| GenerateLoadMiss(masm(), Code::LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(CALLBACKS, name); |
| } |
| |
| |
| MaybeObject* LoadStubCompiler::CompileLoadConstant(JSObject* object, |
| JSObject* holder, |
| Object* value, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : receiver |
| // -- ecx : name |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| GenerateLoadConstant(object, holder, eax, ebx, edx, edi, value, name, &miss); |
| __ bind(&miss); |
| GenerateLoadMiss(masm(), Code::LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(CONSTANT_FUNCTION, name); |
| } |
| |
| |
| MaybeObject* LoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, |
| JSObject* holder, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : receiver |
| // -- ecx : name |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| LookupResult lookup; |
| LookupPostInterceptor(holder, name, &lookup); |
| |
| // TODO(368): Compile in the whole chain: all the interceptors in |
| // prototypes and ultimate answer. |
| GenerateLoadInterceptor(receiver, |
| holder, |
| &lookup, |
| eax, |
| ecx, |
| edx, |
| ebx, |
| edi, |
| name, |
| &miss); |
| |
| __ bind(&miss); |
| GenerateLoadMiss(masm(), Code::LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(INTERCEPTOR, name); |
| } |
| |
| |
| MaybeObject* LoadStubCompiler::CompileLoadGlobal(JSObject* object, |
| GlobalObject* holder, |
| JSGlobalPropertyCell* cell, |
| String* name, |
| bool is_dont_delete) { |
| // ----------- S t a t e ------------- |
| // -- eax : receiver |
| // -- ecx : name |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // If the object is the holder then we know that it's a global |
| // object which can only happen for contextual loads. In this case, |
| // the receiver cannot be a smi. |
| if (object != holder) { |
| __ test(eax, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| } |
| |
| // Check that the maps haven't changed. |
| CheckPrototypes(object, eax, holder, ebx, edx, edi, name, &miss); |
| |
| // Get the value from the cell. |
| if (Serializer::enabled()) { |
| __ mov(ebx, Immediate(Handle<JSGlobalPropertyCell>(cell))); |
| __ mov(ebx, FieldOperand(ebx, JSGlobalPropertyCell::kValueOffset)); |
| } else { |
| __ mov(ebx, Operand::Cell(Handle<JSGlobalPropertyCell>(cell))); |
| } |
| |
| // Check for deleted property if property can actually be deleted. |
| if (!is_dont_delete) { |
| __ cmp(ebx, Factory::the_hole_value()); |
| __ j(equal, &miss, not_taken); |
| } else if (FLAG_debug_code) { |
| __ cmp(ebx, Factory::the_hole_value()); |
| __ Check(not_equal, "DontDelete cells can't contain the hole"); |
| } |
| |
| __ IncrementCounter(&Counters::named_load_global_stub, 1); |
| __ mov(eax, ebx); |
| __ ret(0); |
| |
| __ bind(&miss); |
| __ IncrementCounter(&Counters::named_load_global_stub_miss, 1); |
| GenerateLoadMiss(masm(), Code::LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(NORMAL, name); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadField(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| int index) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_field, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| GenerateLoadField(receiver, holder, edx, ebx, ecx, edi, index, name, &miss); |
| |
| __ bind(&miss); |
| __ DecrementCounter(&Counters::keyed_load_field, 1); |
| GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(FIELD, name); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadCallback( |
| String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| AccessorInfo* callback) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_callback, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| Failure* failure = Failure::InternalError(); |
| bool success = GenerateLoadCallback(receiver, holder, edx, eax, ebx, ecx, edi, |
| callback, name, &miss, &failure); |
| if (!success) { |
| miss.Unuse(); |
| return failure; |
| } |
| |
| __ bind(&miss); |
| |
| __ DecrementCounter(&Counters::keyed_load_callback, 1); |
| GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(CALLBACKS, name); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadConstant(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| Object* value) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_constant_function, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| GenerateLoadConstant(receiver, holder, edx, ebx, ecx, edi, |
| value, name, &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); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, |
| JSObject* holder, |
| String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_interceptor, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| LookupResult lookup; |
| LookupPostInterceptor(holder, name, &lookup); |
| GenerateLoadInterceptor(receiver, |
| holder, |
| &lookup, |
| edx, |
| eax, |
| ecx, |
| ebx, |
| edi, |
| name, |
| &miss); |
| __ bind(&miss); |
| __ DecrementCounter(&Counters::keyed_load_interceptor, 1); |
| GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(INTERCEPTOR, name); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_array_length, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| GenerateLoadArrayLength(masm(), edx, ecx, &miss); |
| __ bind(&miss); |
| __ DecrementCounter(&Counters::keyed_load_array_length, 1); |
| GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(CALLBACKS, name); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_string_length, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| GenerateLoadStringLength(masm(), edx, ecx, ebx, &miss); |
| __ bind(&miss); |
| __ DecrementCounter(&Counters::keyed_load_string_length, 1); |
| GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(CALLBACKS, name); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| __ IncrementCounter(&Counters::keyed_load_function_prototype, 1); |
| |
| // Check that the name has not changed. |
| __ cmp(Operand(eax), Immediate(Handle<String>(name))); |
| __ j(not_equal, &miss, not_taken); |
| |
| GenerateLoadFunctionPrototype(masm(), edx, ecx, 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); |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::CompileLoadSpecialized(JSObject* receiver) { |
| // ----------- S t a t e ------------- |
| // -- eax : key |
| // -- edx : receiver |
| // -- esp[0] : return address |
| // ----------------------------------- |
| Label miss; |
| |
| // Check that the receiver isn't a smi. |
| __ test(edx, Immediate(kSmiTagMask)); |
| __ j(zero, &miss, not_taken); |
| |
| // Check that the map matches. |
| __ cmp(FieldOperand(edx, HeapObject::kMapOffset), |
| Immediate(Handle<Map>(receiver->map()))); |
| __ j(not_equal, &miss, not_taken); |
| |
| // Check that the key is a smi. |
| __ test(eax, Immediate(kSmiTagMask)); |
| __ j(not_zero, &miss, not_taken); |
| |
| // Get the elements array. |
| __ mov(ecx, FieldOperand(edx, JSObject::kElementsOffset)); |
| __ AssertFastElements(ecx); |
| |
| // Check that the key is within bounds. |
| __ cmp(eax, FieldOperand(ecx, FixedArray::kLengthOffset)); |
| __ j(above_equal, &miss, not_taken); |
| |
| // Load the result and make sure it's not the hole. |
| __ mov(ebx, Operand(ecx, eax, times_2, |
| FixedArray::kHeaderSize - kHeapObjectTag)); |
| __ cmp(ebx, Factory::the_hole_value()); |
| __ j(equal, &miss, not_taken); |
| __ mov(eax, ebx); |
| __ ret(0); |
| |
| __ bind(&miss); |
| GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| |
| // Return the generated code. |
| return GetCode(NORMAL, NULL); |
| } |
| |
| |
| // Specialized stub for constructing objects from functions which only have only |
| // simple assignments of the form this.x = ...; in their body. |
| MaybeObject* ConstructStubCompiler::CompileConstructStub(JSFunction* function) { |
| // ----------- S t a t e ------------- |
| // -- eax : argc |
| // -- edi : constructor |
| // -- esp[0] : return address |
| // -- esp[4] : last argument |
| // ----------------------------------- |
| Label generic_stub_call; |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| // Check to see whether there are any break points in the function code. If |
| // there are jump to the generic constructor stub which calls the actual |
| // code for the function thereby hitting the break points. |
| __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| __ mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kDebugInfoOffset)); |
| __ cmp(ebx, Factory::undefined_value()); |
| __ j(not_equal, &generic_stub_call, not_taken); |
| #endif |
| |
| // Load the initial map and verify that it is in fact a map. |
| __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); |
| // Will both indicate a NULL and a Smi. |
| __ test(ebx, Immediate(kSmiTagMask)); |
| __ j(zero, &generic_stub_call); |
| __ CmpObjectType(ebx, MAP_TYPE, ecx); |
| __ j(not_equal, &generic_stub_call); |
| |
| #ifdef DEBUG |
| // Cannot construct functions this way. |
| // edi: constructor |
| // ebx: initial map |
| __ CmpInstanceType(ebx, JS_FUNCTION_TYPE); |
| __ Assert(not_equal, "Function constructed by construct stub."); |
| #endif |
| |
| // Now allocate the JSObject on the heap by moving the new space allocation |
| // top forward. |
| // edi: constructor |
| // ebx: initial map |
| __ movzx_b(ecx, FieldOperand(ebx, Map::kInstanceSizeOffset)); |
| __ shl(ecx, kPointerSizeLog2); |
| __ AllocateInNewSpace(ecx, |
| edx, |
| ecx, |
| no_reg, |
| &generic_stub_call, |
| NO_ALLOCATION_FLAGS); |
| |
| // Allocated the JSObject, now initialize the fields and add the heap tag. |
| // ebx: initial map |
| // edx: JSObject (untagged) |
| __ mov(Operand(edx, JSObject::kMapOffset), ebx); |
| __ mov(ebx, Factory::empty_fixed_array()); |
| __ mov(Operand(edx, JSObject::kPropertiesOffset), ebx); |
| __ mov(Operand(edx, JSObject::kElementsOffset), ebx); |
| |
| // Push the allocated object to the stack. This is the object that will be |
| // returned (after it is tagged). |
| __ push(edx); |
| |
| // eax: argc |
| // edx: JSObject (untagged) |
| // Load the address of the first in-object property into edx. |
| __ lea(edx, Operand(edx, JSObject::kHeaderSize)); |
| // Calculate the location of the first argument. The stack contains the |
| // allocated object and the return address on top of the argc arguments. |
| __ lea(ecx, Operand(esp, eax, times_4, 1 * kPointerSize)); |
| |
| // Use edi for holding undefined which is used in several places below. |
| __ mov(edi, Factory::undefined_value()); |
| |
| // eax: argc |
| // ecx: first argument |
| // edx: first in-object property of the JSObject |
| // edi: undefined |
| // Fill the initialized properties with a constant value or a passed argument |
| // depending on the this.x = ...; assignment in the function. |
| SharedFunctionInfo* shared = function->shared(); |
| for (int i = 0; i < shared->this_property_assignments_count(); i++) { |
| if (shared->IsThisPropertyAssignmentArgument(i)) { |
| // Check if the argument assigned to the property is actually passed. |
| // If argument is not passed the property is set to undefined, |
| // otherwise find it on the stack. |
| int arg_number = shared->GetThisPropertyAssignmentArgument(i); |
| __ mov(ebx, edi); |
| __ cmp(eax, arg_number); |
| if (CpuFeatures::IsSupported(CMOV)) { |
| CpuFeatures::Scope use_cmov(CMOV); |
| __ cmov(above, ebx, Operand(ecx, arg_number * -kPointerSize)); |
| } else { |
| Label not_passed; |
| __ j(below_equal, ¬_passed); |
| __ mov(ebx, Operand(ecx, arg_number * -kPointerSize)); |
| __ bind(¬_passed); |
| } |
| // Store value in the property. |
| __ mov(Operand(edx, i * kPointerSize), ebx); |
| } else { |
| // Set the property to the constant value. |
| Handle<Object> constant(shared->GetThisPropertyAssignmentConstant(i)); |
| __ mov(Operand(edx, i * kPointerSize), Immediate(constant)); |
| } |
| } |
| |
| // Fill the unused in-object property fields with undefined. |
| ASSERT(function->has_initial_map()); |
| for (int i = shared->this_property_assignments_count(); |
| i < function->initial_map()->inobject_properties(); |
| i++) { |
| __ mov(Operand(edx, i * kPointerSize), edi); |
| } |
| |
| // Move argc to ebx and retrieve and tag the JSObject to return. |
| __ mov(ebx, eax); |
| __ pop(eax); |
| __ or_(Operand(eax), Immediate(kHeapObjectTag)); |
| |
| // Remove caller arguments and receiver from the stack and return. |
| __ pop(ecx); |
| __ lea(esp, Operand(esp, ebx, times_pointer_size, 1 * kPointerSize)); |
| __ push(ecx); |
| __ IncrementCounter(&Counters::constructed_objects, 1); |
| __ IncrementCounter(&Counters::constructed_objects_stub, 1); |
| __ ret(0); |
| |
| // Jump to the generic stub in case the specialized code cannot handle the |
| // construction. |
| __ bind(&generic_stub_call); |
| Code* code = Builtins::builtin(Builtins::JSConstructStubGeneric); |
| Handle<Code> generic_construct_stub(code); |
| __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET); |
| |
| // Return the generated code. |
| return GetCode(); |
| } |
| |
| |
| #undef __ |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_TARGET_ARCH_IA32 |
