diff options
Diffstat (limited to 'deps/v8/src/ia32/stub-cache-ia32.cc')
| -rw-r--r-- | deps/v8/src/ia32/stub-cache-ia32.cc | 684 |
1 files changed, 92 insertions, 592 deletions
diff --git a/deps/v8/src/ia32/stub-cache-ia32.cc b/deps/v8/src/ia32/stub-cache-ia32.cc index df7ad4467f..354c2fdcb0 100644 --- a/deps/v8/src/ia32/stub-cache-ia32.cc +++ b/deps/v8/src/ia32/stub-cache-ia32.cc @@ -392,6 +392,11 @@ static void PushInterceptorArguments(MacroAssembler* masm, Register holder, Register name, Handle<JSObject> holder_obj) { + STATIC_ASSERT(StubCache::kInterceptorArgsNameIndex == 0); + STATIC_ASSERT(StubCache::kInterceptorArgsInfoIndex == 1); + STATIC_ASSERT(StubCache::kInterceptorArgsThisIndex == 2); + STATIC_ASSERT(StubCache::kInterceptorArgsHolderIndex == 3); + STATIC_ASSERT(StubCache::kInterceptorArgsLength == 4); __ push(name); Handle<InterceptorInfo> interceptor(holder_obj->GetNamedInterceptor()); ASSERT(!masm->isolate()->heap()->InNewSpace(*interceptor)); @@ -400,8 +405,6 @@ static void PushInterceptorArguments(MacroAssembler* masm, __ push(scratch); __ push(receiver); __ push(holder); - __ push(FieldOperand(scratch, InterceptorInfo::kDataOffset)); - __ push(Immediate(reinterpret_cast<int>(masm->isolate()))); } @@ -415,7 +418,7 @@ static void CompileCallLoadPropertyWithInterceptor( __ CallExternalReference( ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorOnly), masm->isolate()), - 6); + StubCache::kInterceptorArgsLength); } @@ -516,38 +519,65 @@ static void GenerateFastApiCall(MacroAssembler* masm, // Function address is a foreign pointer outside V8's heap. Address function_address = v8::ToCData<Address>(api_call_info->callback()); - bool returns_handle = - !CallbackTable::ReturnsVoid(masm->isolate(), - reinterpret_cast<void*>(function_address)); - __ PrepareCallApiFunction(kApiArgc + kApiStackSpace, returns_handle); + __ PrepareCallApiFunction(kApiArgc + kApiStackSpace); // v8::Arguments::implicit_args_. - __ mov(ApiParameterOperand(2, returns_handle), eax); + __ mov(ApiParameterOperand(2), eax); __ add(eax, Immediate(argc * kPointerSize)); // v8::Arguments::values_. - __ mov(ApiParameterOperand(3, returns_handle), eax); + __ mov(ApiParameterOperand(3), eax); // v8::Arguments::length_. - __ Set(ApiParameterOperand(4, returns_handle), Immediate(argc)); + __ Set(ApiParameterOperand(4), Immediate(argc)); // v8::Arguments::is_construct_call_. - __ Set(ApiParameterOperand(5, returns_handle), Immediate(0)); + __ Set(ApiParameterOperand(5), Immediate(0)); // v8::InvocationCallback's argument. - __ lea(eax, ApiParameterOperand(2, returns_handle)); - __ mov(ApiParameterOperand(0, returns_handle), eax); + __ lea(eax, ApiParameterOperand(2)); + __ mov(ApiParameterOperand(0), eax); - Address thunk_address = returns_handle - ? FUNCTION_ADDR(&InvokeInvocationCallback) - : FUNCTION_ADDR(&InvokeFunctionCallback); + Address thunk_address = FUNCTION_ADDR(&InvokeFunctionCallback); __ CallApiFunctionAndReturn(function_address, thunk_address, - ApiParameterOperand(1, returns_handle), + ApiParameterOperand(1), argc + kFastApiCallArguments + 1, - returns_handle, kFastApiCallArguments + 1); } +// Generate call to api function. +static void GenerateFastApiCall(MacroAssembler* masm, + const CallOptimization& optimization, + Register receiver, + Register scratch, + int argc, + Register* values) { + ASSERT(optimization.is_simple_api_call()); + ASSERT(!receiver.is(scratch)); + + const int stack_space = kFastApiCallArguments + argc + 1; + // Copy return value. + __ mov(scratch, Operand(esp, 0)); + // Assign stack space for the call arguments. + __ sub(esp, Immediate(stack_space * kPointerSize)); + // Move the return address on top of the stack. + __ mov(Operand(esp, 0), scratch); + // Write holder to stack frame. + __ mov(Operand(esp, 1 * kPointerSize), receiver); + // Write receiver to stack frame. + int index = stack_space; + __ mov(Operand(esp, index-- * kPointerSize), receiver); + // Write the arguments to stack frame. + for (int i = 0; i < argc; i++) { + ASSERT(!receiver.is(values[i])); + ASSERT(!scratch.is(values[i])); + __ mov(Operand(esp, index-- * kPointerSize), values[i]); + } + + GenerateFastApiCall(masm, optimization, argc); +} + + class CallInterceptorCompiler BASE_EMBEDDED { public: CallInterceptorCompiler(StubCompiler* stub_compiler, @@ -706,7 +736,7 @@ class CallInterceptorCompiler BASE_EMBEDDED { __ CallExternalReference( ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorForCall), masm->isolate()), - 6); + StubCache::kInterceptorArgsLength); // Restore the name_ register. __ pop(name_); @@ -1267,7 +1297,7 @@ Register BaseLoadStubCompiler::CallbackHandlerFrontend( Handle<JSObject> holder, Handle<Name> name, Label* success, - Handle<ExecutableAccessorInfo> callback) { + Handle<Object> callback) { Label miss; Register reg = HandlerFrontendHeader(object, object_reg, holder, name, &miss); @@ -1361,20 +1391,33 @@ void BaseLoadStubCompiler::GenerateLoadField(Register reg, void BaseLoadStubCompiler::GenerateLoadCallback( + const CallOptimization& call_optimization) { + GenerateFastApiCall( + masm(), call_optimization, receiver(), scratch3(), 0, NULL); +} + + +void BaseLoadStubCompiler::GenerateLoadCallback( Register reg, Handle<ExecutableAccessorInfo> callback) { // Insert additional parameters into the stack frame above return address. ASSERT(!scratch3().is(reg)); __ pop(scratch3()); // Get return address to place it below. + STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 0); + STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == -1); + STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == -2); + STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == -3); + STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == -4); + STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == -5); __ push(receiver()); // receiver __ mov(scratch2(), esp); ASSERT(!scratch2().is(reg)); - __ push(reg); // holder // Push data from ExecutableAccessorInfo. if (isolate()->heap()->InNewSpace(callback->data())) { - __ mov(scratch1(), Immediate(callback)); - __ push(FieldOperand(scratch1(), ExecutableAccessorInfo::kDataOffset)); + Register scratch = reg.is(scratch1()) ? receiver() : scratch1(); + __ mov(scratch, Immediate(callback)); + __ push(FieldOperand(scratch, ExecutableAccessorInfo::kDataOffset)); } else { __ push(Immediate(Handle<Object>(callback->data(), isolate()))); } @@ -1382,6 +1425,7 @@ void BaseLoadStubCompiler::GenerateLoadCallback( // ReturnValue default value __ push(Immediate(isolate()->factory()->undefined_value())); __ push(Immediate(reinterpret_cast<int>(isolate()))); + __ push(reg); // holder // Save a pointer to where we pushed the arguments pointer. This will be // passed as the const ExecutableAccessorInfo& to the C++ callback. @@ -1400,29 +1444,23 @@ void BaseLoadStubCompiler::GenerateLoadCallback( const int kApiArgc = 2 + 1; Address getter_address = v8::ToCData<Address>(callback->getter()); - bool returns_handle = - !CallbackTable::ReturnsVoid(isolate(), - reinterpret_cast<void*>(getter_address)); - __ PrepareCallApiFunction(kApiArgc, returns_handle); - __ mov(ApiParameterOperand(0, returns_handle), ebx); // name. + __ PrepareCallApiFunction(kApiArgc); + __ mov(ApiParameterOperand(0), ebx); // name. __ add(ebx, Immediate(kPointerSize)); - __ mov(ApiParameterOperand(1, returns_handle), ebx); // arguments pointer. + __ 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. - Address thunk_address = returns_handle - ? FUNCTION_ADDR(&InvokeAccessorGetter) - : FUNCTION_ADDR(&InvokeAccessorGetterCallback); + Address thunk_address = FUNCTION_ADDR(&InvokeAccessorGetterCallback); __ CallApiFunctionAndReturn(getter_address, thunk_address, - ApiParameterOperand(2, returns_handle), + ApiParameterOperand(2), kStackSpace, - returns_handle, - 6); + 7); } @@ -1529,7 +1567,7 @@ void BaseLoadStubCompiler::GenerateLoadInterceptor( ExternalReference ref = ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorForLoad), isolate()); - __ TailCallExternalReference(ref, 6, 1); + __ TailCallExternalReference(ref, StubCache::kInterceptorArgsLength, 1); } } @@ -2891,6 +2929,24 @@ Handle<Code> StoreStubCompiler::CompileStoreCallback( } +Handle<Code> StoreStubCompiler::CompileStoreCallback( + Handle<JSObject> object, + Handle<JSObject> holder, + Handle<Name> name, + const CallOptimization& call_optimization) { + Label success; + HandlerFrontend(object, receiver(), holder, name, &success); + __ bind(&success); + + Register values[] = { value() }; + GenerateFastApiCall( + masm(), call_optimization, receiver(), scratch1(), 1, values); + + // Return the generated code. + return GetCode(kind(), Code::CALLBACKS, name); +} + + #undef __ #define __ ACCESS_MASM(masm) @@ -2958,48 +3014,6 @@ Handle<Code> StoreStubCompiler::CompileStoreInterceptor( } -Handle<Code> StoreStubCompiler::CompileStoreGlobal( - Handle<GlobalObject> object, - Handle<PropertyCell> cell, - Handle<Name> name) { - Label miss; - - // Check that the map of the global has not changed. - __ cmp(FieldOperand(receiver(), HeapObject::kMapOffset), - Immediate(Handle<Map>(object->map()))); - __ j(not_equal, &miss); - - // Compute the cell operand to use. - __ mov(scratch1(), Immediate(cell)); - Operand cell_operand = - FieldOperand(scratch1(), PropertyCell::kValueOffset); - - // Check that the value in the cell is not the hole. If it is, this - // cell could have been deleted and reintroducing the global needs - // to update the property details in the property dictionary of the - // global object. We bail out to the runtime system to do that. - __ cmp(cell_operand, factory()->the_hole_value()); - __ j(equal, &miss); - - // Store the value in the cell. - __ mov(cell_operand, value()); - // No write barrier here, because cells are always rescanned. - - // Return the value (register eax). - Counters* counters = isolate()->counters(); - __ IncrementCounter(counters->named_store_global_inline(), 1); - __ ret(0); - - // Handle store cache miss. - __ bind(&miss); - __ IncrementCounter(counters->named_store_global_inline_miss(), 1); - TailCallBuiltin(masm(), MissBuiltin(kind())); - - // Return the generated code. - return GetICCode(kind(), Code::NORMAL, name); -} - - Handle<Code> KeyedStoreStubCompiler::CompileStorePolymorphic( MapHandleList* receiver_maps, CodeHandleList* handler_stubs, @@ -3256,520 +3270,6 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement( } -static void GenerateSmiKeyCheck(MacroAssembler* masm, - Register key, - Register scratch, - XMMRegister xmm_scratch0, - XMMRegister xmm_scratch1, - Label* fail) { - // Check that key is a smi and if SSE2 is available a heap number - // containing a smi and branch if the check fails. - if (CpuFeatures::IsSupported(SSE2)) { - CpuFeatureScope use_sse2(masm, SSE2); - Label key_ok; - __ JumpIfSmi(key, &key_ok); - __ cmp(FieldOperand(key, HeapObject::kMapOffset), - Immediate(Handle<Map>(masm->isolate()->heap()->heap_number_map()))); - __ j(not_equal, fail); - __ movdbl(xmm_scratch0, FieldOperand(key, HeapNumber::kValueOffset)); - __ cvttsd2si(scratch, Operand(xmm_scratch0)); - __ cvtsi2sd(xmm_scratch1, scratch); - __ ucomisd(xmm_scratch1, xmm_scratch0); - __ j(not_equal, fail); - __ j(parity_even, fail); // NaN. - // Check if the key fits in the smi range. - __ cmp(scratch, 0xc0000000); - __ j(sign, fail); - __ SmiTag(scratch); - __ mov(key, scratch); - __ bind(&key_ok); - } else { - __ JumpIfNotSmi(key, fail); - } -} - - -void KeyedStoreStubCompiler::GenerateStoreExternalArray( - MacroAssembler* masm, - ElementsKind elements_kind) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label miss_force_generic, slow, check_heap_number; - - // This stub is meant to be tail-jumped to, the receiver must already - // have been verified by the caller to not be a smi. - - // Check that the key is a smi or a heap number convertible to a smi. - GenerateSmiKeyCheck(masm, ecx, ebx, xmm0, xmm1, &miss_force_generic); - - // Check that the index is in range. - __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); - __ cmp(ecx, FieldOperand(edi, ExternalArray::kLengthOffset)); - // Unsigned comparison catches both negative and too-large values. - __ j(above_equal, &slow); - - // Handle both smis and HeapNumbers in the fast path. Go to the - // runtime for all other kinds of values. - // eax: value - // edx: receiver - // ecx: key - // edi: elements array - if (elements_kind == EXTERNAL_PIXEL_ELEMENTS) { - __ JumpIfNotSmi(eax, &slow); - } else { - __ JumpIfNotSmi(eax, &check_heap_number); - } - - // smi case - __ mov(ebx, eax); // Preserve the value in eax as the return value. - __ SmiUntag(ebx); - __ mov(edi, FieldOperand(edi, ExternalArray::kExternalPointerOffset)); - // edi: base pointer of external storage - switch (elements_kind) { - case EXTERNAL_PIXEL_ELEMENTS: - __ ClampUint8(ebx); - __ SmiUntag(ecx); - __ mov_b(Operand(edi, ecx, times_1, 0), ebx); - break; - case EXTERNAL_BYTE_ELEMENTS: - case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: - __ SmiUntag(ecx); - __ mov_b(Operand(edi, ecx, times_1, 0), ebx); - break; - case EXTERNAL_SHORT_ELEMENTS: - case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: - __ mov_w(Operand(edi, ecx, times_1, 0), ebx); - break; - case EXTERNAL_INT_ELEMENTS: - case EXTERNAL_UNSIGNED_INT_ELEMENTS: - __ mov(Operand(edi, ecx, times_2, 0), ebx); - break; - case EXTERNAL_FLOAT_ELEMENTS: - case EXTERNAL_DOUBLE_ELEMENTS: - // Need to perform int-to-float conversion. - __ push(ebx); - __ fild_s(Operand(esp, 0)); - __ pop(ebx); - if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { - __ fstp_s(Operand(edi, ecx, times_2, 0)); - } else { // elements_kind == EXTERNAL_DOUBLE_ELEMENTS. - __ fstp_d(Operand(edi, ecx, times_4, 0)); - } - break; - default: - UNREACHABLE(); - break; - } - __ ret(0); // Return the original value. - - // TODO(danno): handle heap number -> pixel array conversion - if (elements_kind != EXTERNAL_PIXEL_ELEMENTS) { - __ bind(&check_heap_number); - // eax: value - // edx: receiver - // ecx: key - // edi: elements array - __ cmp(FieldOperand(eax, HeapObject::kMapOffset), - Immediate(masm->isolate()->factory()->heap_number_map())); - __ j(not_equal, &slow); - - // The WebGL specification leaves the behavior of storing NaN and - // +/-Infinity into integer arrays basically undefined. For more - // reproducible behavior, convert these to zero. - __ mov(edi, FieldOperand(edi, ExternalArray::kExternalPointerOffset)); - // edi: base pointer of external storage - if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { - __ fld_d(FieldOperand(eax, HeapNumber::kValueOffset)); - __ fstp_s(Operand(edi, ecx, times_2, 0)); - __ ret(0); - } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { - __ fld_d(FieldOperand(eax, HeapNumber::kValueOffset)); - __ fstp_d(Operand(edi, ecx, times_4, 0)); - __ ret(0); - } else { - // Perform float-to-int conversion with truncation (round-to-zero) - // behavior. - - // For the moment we make the slow call to the runtime on - // processors that don't support SSE2. The code in IntegerConvert - // (code-stubs-ia32.cc) is roughly what is needed here though the - // conversion failure case does not need to be handled. - if (CpuFeatures::IsSupported(SSE2)) { - if ((elements_kind == EXTERNAL_INT_ELEMENTS || - elements_kind == EXTERNAL_UNSIGNED_INT_ELEMENTS) && - CpuFeatures::IsSupported(SSE3)) { - CpuFeatureScope scope(masm, SSE3); - // fisttp stores values as signed integers. To represent the - // entire range of int and unsigned int arrays, store as a - // 64-bit int and discard the high 32 bits. - __ fld_d(FieldOperand(eax, HeapNumber::kValueOffset)); - __ sub(esp, Immediate(2 * kPointerSize)); - __ fisttp_d(Operand(esp, 0)); - - // If conversion failed (NaN, infinity, or a number outside - // signed int64 range), the result is 0x8000000000000000, and - // we must handle this case in the runtime. - Label ok; - __ cmp(Operand(esp, kPointerSize), Immediate(0x80000000u)); - __ j(not_equal, &ok); - __ cmp(Operand(esp, 0), Immediate(0)); - __ j(not_equal, &ok); - __ add(esp, Immediate(2 * kPointerSize)); // Restore the stack. - __ jmp(&slow); - - __ bind(&ok); - __ pop(ebx); - __ add(esp, Immediate(kPointerSize)); - __ mov(Operand(edi, ecx, times_2, 0), ebx); - } else { - ASSERT(CpuFeatures::IsSupported(SSE2)); - CpuFeatureScope scope(masm, SSE2); - __ cvttsd2si(ebx, FieldOperand(eax, HeapNumber::kValueOffset)); - __ cmp(ebx, 0x80000000u); - __ j(equal, &slow); - // ebx: untagged integer value - switch (elements_kind) { - case EXTERNAL_PIXEL_ELEMENTS: - __ ClampUint8(ebx); - // Fall through. - case EXTERNAL_BYTE_ELEMENTS: - case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: - __ SmiUntag(ecx); - __ mov_b(Operand(edi, ecx, times_1, 0), ebx); - break; - case EXTERNAL_SHORT_ELEMENTS: - case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: - __ mov_w(Operand(edi, ecx, times_1, 0), ebx); - break; - case EXTERNAL_INT_ELEMENTS: - case EXTERNAL_UNSIGNED_INT_ELEMENTS: - __ mov(Operand(edi, ecx, times_2, 0), ebx); - break; - default: - UNREACHABLE(); - break; - } - } - __ ret(0); // Return original value. - } - } - } - - // Slow case: call runtime. - __ bind(&slow); - Counters* counters = masm->isolate()->counters(); - __ IncrementCounter(counters->keyed_store_external_array_slow(), 1); - - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow); - - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ bind(&miss_force_generic); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_MissForceGeneric); -} - - -void KeyedStoreStubCompiler::GenerateStoreFastElement( - MacroAssembler* masm, - bool is_js_array, - ElementsKind elements_kind, - KeyedAccessStoreMode store_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label miss_force_generic, grow, slow, transition_elements_kind; - Label check_capacity, prepare_slow, finish_store, commit_backing_store; - - // This stub is meant to be tail-jumped to, the receiver must already - // have been verified by the caller to not be a smi. - - // Check that the key is a smi or a heap number convertible to a smi. - GenerateSmiKeyCheck(masm, ecx, ebx, xmm0, xmm1, &miss_force_generic); - - if (IsFastSmiElementsKind(elements_kind)) { - __ JumpIfNotSmi(eax, &transition_elements_kind); - } - - // Get the elements array and make sure it is a fast element array, not 'cow'. - __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); - if (is_js_array) { - // Check that the key is within bounds. - __ cmp(ecx, FieldOperand(edx, JSArray::kLengthOffset)); // smis. - if (IsGrowStoreMode(store_mode)) { - __ j(above_equal, &grow); - } else { - __ j(above_equal, &miss_force_generic); - } - } else { - // Check that the key is within bounds. - __ cmp(ecx, FieldOperand(edi, FixedArray::kLengthOffset)); // smis. - __ j(above_equal, &miss_force_generic); - } - - __ cmp(FieldOperand(edi, HeapObject::kMapOffset), - Immediate(masm->isolate()->factory()->fixed_array_map())); - __ j(not_equal, &miss_force_generic); - - __ bind(&finish_store); - if (IsFastSmiElementsKind(elements_kind)) { - // ecx is a smi, use times_half_pointer_size instead of - // times_pointer_size - __ mov(FieldOperand(edi, - ecx, - times_half_pointer_size, - FixedArray::kHeaderSize), eax); - } else { - ASSERT(IsFastObjectElementsKind(elements_kind)); - // Do the store and update the write barrier. - // ecx is a smi, use times_half_pointer_size instead of - // times_pointer_size - __ lea(ecx, FieldOperand(edi, - ecx, - times_half_pointer_size, - FixedArray::kHeaderSize)); - __ mov(Operand(ecx, 0), eax); - // Make sure to preserve the value in register eax. - __ mov(ebx, eax); - __ RecordWrite(edi, ecx, ebx, kDontSaveFPRegs); - } - - // Done. - __ ret(0); - - // Handle store cache miss, replacing the ic with the generic stub. - __ bind(&miss_force_generic); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_MissForceGeneric); - - // Handle transition to other elements kinds without using the generic stub. - __ bind(&transition_elements_kind); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Miss); - - if (is_js_array && IsGrowStoreMode(store_mode)) { - // Handle transition requiring the array to grow. - __ bind(&grow); - - // Make sure the array is only growing by a single element, anything else - // must be handled by the runtime. Flags are already set by previous - // compare. - __ j(not_equal, &miss_force_generic); - - // Check for the empty array, and preallocate a small backing store if - // possible. - __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); - __ cmp(edi, Immediate(masm->isolate()->factory()->empty_fixed_array())); - __ j(not_equal, &check_capacity); - - int size = FixedArray::SizeFor(JSArray::kPreallocatedArrayElements); - __ Allocate(size, edi, ebx, ecx, &prepare_slow, TAG_OBJECT); - // Restore the key, which is known to be the array length. - - // eax: value - // ecx: key - // edx: receiver - // edi: elements - // Make sure that the backing store can hold additional elements. - __ mov(FieldOperand(edi, JSObject::kMapOffset), - Immediate(masm->isolate()->factory()->fixed_array_map())); - __ mov(FieldOperand(edi, FixedArray::kLengthOffset), - Immediate(Smi::FromInt(JSArray::kPreallocatedArrayElements))); - __ mov(ebx, Immediate(masm->isolate()->factory()->the_hole_value())); - for (int i = 1; i < JSArray::kPreallocatedArrayElements; ++i) { - __ mov(FieldOperand(edi, FixedArray::SizeFor(i)), ebx); - } - - // Store the element at index zero. - __ mov(FieldOperand(edi, FixedArray::SizeFor(0)), eax); - - // Install the new backing store in the JSArray. - __ mov(FieldOperand(edx, JSObject::kElementsOffset), edi); - __ RecordWriteField(edx, JSObject::kElementsOffset, edi, ebx, - kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); - - // Increment the length of the array. - __ mov(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - __ ret(0); - - __ bind(&check_capacity); - __ cmp(FieldOperand(edi, HeapObject::kMapOffset), - Immediate(masm->isolate()->factory()->fixed_cow_array_map())); - __ j(equal, &miss_force_generic); - - // eax: value - // ecx: key - // edx: receiver - // edi: elements - // Make sure that the backing store can hold additional elements. - __ cmp(ecx, FieldOperand(edi, FixedArray::kLengthOffset)); - __ j(above_equal, &slow); - - // Grow the array and finish the store. - __ add(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - __ jmp(&finish_store); - - __ bind(&prepare_slow); - // Restore the key, which is known to be the array length. - __ mov(ecx, Immediate(0)); - - __ bind(&slow); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow); - } -} - - -void KeyedStoreStubCompiler::GenerateStoreFastDoubleElement( - MacroAssembler* masm, - bool is_js_array, - KeyedAccessStoreMode store_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label miss_force_generic, transition_elements_kind, grow, slow; - Label check_capacity, prepare_slow, finish_store, commit_backing_store; - - // This stub is meant to be tail-jumped to, the receiver must already - // have been verified by the caller to not be a smi. - - // Check that the key is a smi or a heap number convertible to a smi. - GenerateSmiKeyCheck(masm, ecx, ebx, xmm0, xmm1, &miss_force_generic); - - // Get the elements array. - __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); - __ AssertFastElements(edi); - - if (is_js_array) { - // Check that the key is within bounds. - __ cmp(ecx, FieldOperand(edx, JSArray::kLengthOffset)); // smis. - if (IsGrowStoreMode(store_mode)) { - __ j(above_equal, &grow); - } else { - __ j(above_equal, &miss_force_generic); - } - } else { - // Check that the key is within bounds. - __ cmp(ecx, FieldOperand(edi, FixedArray::kLengthOffset)); // smis. - __ j(above_equal, &miss_force_generic); - } - - __ bind(&finish_store); - __ StoreNumberToDoubleElements(eax, edi, ecx, edx, xmm0, - &transition_elements_kind, true); - __ ret(0); - - // Handle store cache miss, replacing the ic with the generic stub. - __ bind(&miss_force_generic); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_MissForceGeneric); - - // Handle transition to other elements kinds without using the generic stub. - __ bind(&transition_elements_kind); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Miss); - - if (is_js_array && IsGrowStoreMode(store_mode)) { - // Handle transition requiring the array to grow. - __ bind(&grow); - - // Make sure the array is only growing by a single element, anything else - // must be handled by the runtime. Flags are already set by previous - // compare. - __ j(not_equal, &miss_force_generic); - - // Transition on values that can't be stored in a FixedDoubleArray. - Label value_is_smi; - __ JumpIfSmi(eax, &value_is_smi); - __ cmp(FieldOperand(eax, HeapObject::kMapOffset), - Immediate(Handle<Map>(masm->isolate()->heap()->heap_number_map()))); - __ j(not_equal, &transition_elements_kind); - __ bind(&value_is_smi); - - // Check for the empty array, and preallocate a small backing store if - // possible. - __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); - __ cmp(edi, Immediate(masm->isolate()->factory()->empty_fixed_array())); - __ j(not_equal, &check_capacity); - - int size = FixedDoubleArray::SizeFor(JSArray::kPreallocatedArrayElements); - __ Allocate(size, edi, ebx, ecx, &prepare_slow, TAG_OBJECT); - - // Restore the key, which is known to be the array length. - __ mov(ecx, Immediate(0)); - - // eax: value - // ecx: key - // edx: receiver - // edi: elements - // Initialize the new FixedDoubleArray. - __ mov(FieldOperand(edi, JSObject::kMapOffset), - Immediate(masm->isolate()->factory()->fixed_double_array_map())); - __ mov(FieldOperand(edi, FixedDoubleArray::kLengthOffset), - Immediate(Smi::FromInt(JSArray::kPreallocatedArrayElements))); - - __ StoreNumberToDoubleElements(eax, edi, ecx, ebx, xmm0, - &transition_elements_kind, true); - - for (int i = 1; i < JSArray::kPreallocatedArrayElements; i++) { - int offset = FixedDoubleArray::OffsetOfElementAt(i); - __ mov(FieldOperand(edi, offset), Immediate(kHoleNanLower32)); - __ mov(FieldOperand(edi, offset + kPointerSize), - Immediate(kHoleNanUpper32)); - } - - // Install the new backing store in the JSArray. - __ mov(FieldOperand(edx, JSObject::kElementsOffset), edi); - __ RecordWriteField(edx, JSObject::kElementsOffset, edi, ebx, - kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); - - // Increment the length of the array. - __ add(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - __ mov(edi, FieldOperand(edx, JSObject::kElementsOffset)); - __ ret(0); - - __ bind(&check_capacity); - // eax: value - // ecx: key - // edx: receiver - // edi: elements - // Make sure that the backing store can hold additional elements. - __ cmp(ecx, FieldOperand(edi, FixedDoubleArray::kLengthOffset)); - __ j(above_equal, &slow); - - // Grow the array and finish the store. - __ add(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - __ jmp(&finish_store); - - __ bind(&prepare_slow); - // Restore the key, which is known to be the array length. - __ mov(ecx, Immediate(0)); - - __ bind(&slow); - TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow); - } -} - - #undef __ } } // namespace v8::internal |