Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #if V8_TARGET_ARCH_X64 |
| 6 | |
| 7 | #include "src/ic/call-optimization.h" |
| 8 | #include "src/ic/handler-compiler.h" |
| 9 | #include "src/ic/ic.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 10 | #include "src/isolate-inl.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
| 15 | #define __ ACCESS_MASM(masm) |
| 16 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 17 | void PropertyHandlerCompiler::PushVectorAndSlot(Register vector, |
| 18 | Register slot) { |
| 19 | MacroAssembler* masm = this->masm(); |
| 20 | __ Push(vector); |
| 21 | __ Push(slot); |
| 22 | } |
| 23 | |
| 24 | |
| 25 | void PropertyHandlerCompiler::PopVectorAndSlot(Register vector, Register slot) { |
| 26 | MacroAssembler* masm = this->masm(); |
| 27 | __ Pop(slot); |
| 28 | __ Pop(vector); |
| 29 | } |
| 30 | |
| 31 | |
| 32 | void PropertyHandlerCompiler::DiscardVectorAndSlot() { |
| 33 | MacroAssembler* masm = this->masm(); |
| 34 | // Remove vector and slot. |
| 35 | __ addp(rsp, Immediate(2 * kPointerSize)); |
| 36 | } |
| 37 | |
| 38 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 39 | void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup( |
| 40 | MacroAssembler* masm, Label* miss_label, Register receiver, |
| 41 | Handle<Name> name, Register scratch0, Register scratch1) { |
| 42 | DCHECK(name->IsUniqueName()); |
| 43 | DCHECK(!receiver.is(scratch0)); |
| 44 | Counters* counters = masm->isolate()->counters(); |
| 45 | __ IncrementCounter(counters->negative_lookups(), 1); |
| 46 | __ IncrementCounter(counters->negative_lookups_miss(), 1); |
| 47 | |
| 48 | __ movp(scratch0, FieldOperand(receiver, HeapObject::kMapOffset)); |
| 49 | |
| 50 | const int kInterceptorOrAccessCheckNeededMask = |
| 51 | (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded); |
| 52 | |
| 53 | // Bail out if the receiver has a named interceptor or requires access checks. |
| 54 | __ testb(FieldOperand(scratch0, Map::kBitFieldOffset), |
| 55 | Immediate(kInterceptorOrAccessCheckNeededMask)); |
| 56 | __ j(not_zero, miss_label); |
| 57 | |
| 58 | // Check that receiver is a JSObject. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 59 | __ CmpInstanceType(scratch0, FIRST_JS_RECEIVER_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 60 | __ j(below, miss_label); |
| 61 | |
| 62 | // Load properties array. |
| 63 | Register properties = scratch0; |
| 64 | __ movp(properties, FieldOperand(receiver, JSObject::kPropertiesOffset)); |
| 65 | |
| 66 | // Check that the properties array is a dictionary. |
| 67 | __ CompareRoot(FieldOperand(properties, HeapObject::kMapOffset), |
| 68 | Heap::kHashTableMapRootIndex); |
| 69 | __ j(not_equal, miss_label); |
| 70 | |
| 71 | Label done; |
| 72 | NameDictionaryLookupStub::GenerateNegativeLookup(masm, miss_label, &done, |
| 73 | properties, name, scratch1); |
| 74 | __ bind(&done); |
| 75 | __ DecrementCounter(counters->negative_lookups_miss(), 1); |
| 76 | } |
| 77 | |
| 78 | |
| 79 | void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 80 | MacroAssembler* masm, int index, Register result, Label* miss) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 81 | __ LoadNativeContextSlot(index, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 82 | // Load its initial map. The global functions all have initial maps. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 83 | __ movp(result, |
| 84 | FieldOperand(result, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 85 | // Load the prototype from the initial map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 86 | __ movp(result, FieldOperand(result, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | |
| 90 | void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype( |
| 91 | MacroAssembler* masm, Register receiver, Register result, Register scratch, |
| 92 | Label* miss_label) { |
| 93 | __ TryGetFunctionPrototype(receiver, result, miss_label); |
| 94 | if (!result.is(rax)) __ movp(rax, result); |
| 95 | __ ret(0); |
| 96 | } |
| 97 | |
| 98 | |
| 99 | static void PushInterceptorArguments(MacroAssembler* masm, Register receiver, |
| 100 | Register holder, Register name, |
| 101 | Handle<JSObject> holder_obj) { |
| 102 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 103 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex == 1); |
| 104 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex == 2); |
| 105 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsLength == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 106 | __ Push(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 107 | __ Push(receiver); |
| 108 | __ Push(holder); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | static void CompileCallLoadPropertyWithInterceptor( |
| 113 | MacroAssembler* masm, Register receiver, Register holder, Register name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 114 | Handle<JSObject> holder_obj, Runtime::FunctionId id) { |
| 115 | DCHECK(NamedLoadHandlerCompiler::kInterceptorArgsLength == |
| 116 | Runtime::FunctionForId(id)->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 117 | PushInterceptorArguments(masm, receiver, holder, name, holder_obj); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 118 | __ CallRuntime(id); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | |
| 122 | // Generate call to api function. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 123 | void PropertyHandlerCompiler::GenerateApiAccessorCall( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 124 | MacroAssembler* masm, const CallOptimization& optimization, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 125 | Handle<Map> receiver_map, Register receiver, Register scratch, |
| 126 | bool is_store, Register store_parameter, Register accessor_holder, |
| 127 | int accessor_index) { |
| 128 | DCHECK(!accessor_holder.is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 129 | DCHECK(optimization.is_simple_api_call()); |
| 130 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 131 | __ PopReturnAddressTo(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 132 | // receiver |
| 133 | __ Push(receiver); |
| 134 | // Write the arguments to stack frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 135 | if (is_store) { |
| 136 | DCHECK(!receiver.is(store_parameter)); |
| 137 | DCHECK(!scratch.is(store_parameter)); |
| 138 | __ Push(store_parameter); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 139 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 140 | __ PushReturnAddressFrom(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 141 | // Stack now matches JSFunction abi. |
| 142 | |
| 143 | // Abi for CallApiFunctionStub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 144 | Register callee = rdi; |
| 145 | Register data = rbx; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 146 | Register holder = rcx; |
| 147 | Register api_function_address = rdx; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 148 | scratch = no_reg; |
| 149 | |
| 150 | // Put callee in place. |
| 151 | __ LoadAccessor(callee, accessor_holder, accessor_index, |
| 152 | is_store ? ACCESSOR_SETTER : ACCESSOR_GETTER); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 153 | |
| 154 | // Put holder in place. |
| 155 | CallOptimization::HolderLookup holder_lookup; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 156 | int holder_depth = 0; |
| 157 | optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup, |
| 158 | &holder_depth); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 159 | switch (holder_lookup) { |
| 160 | case CallOptimization::kHolderIsReceiver: |
| 161 | __ Move(holder, receiver); |
| 162 | break; |
| 163 | case CallOptimization::kHolderFound: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 164 | __ movp(holder, FieldOperand(receiver, HeapObject::kMapOffset)); |
| 165 | __ movp(holder, FieldOperand(holder, Map::kPrototypeOffset)); |
| 166 | for (int i = 1; i < holder_depth; i++) { |
| 167 | __ movp(holder, FieldOperand(holder, HeapObject::kMapOffset)); |
| 168 | __ movp(holder, FieldOperand(holder, Map::kPrototypeOffset)); |
| 169 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 170 | break; |
| 171 | case CallOptimization::kHolderNotFound: |
| 172 | UNREACHABLE(); |
| 173 | break; |
| 174 | } |
| 175 | |
| 176 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 177 | Handle<CallHandlerInfo> api_call_info = optimization.api_call_info(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 178 | bool call_data_undefined = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 179 | // Put call data in place. |
| 180 | if (api_call_info->data()->IsUndefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 181 | call_data_undefined = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 182 | __ LoadRoot(data, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 183 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 184 | __ movp(data, FieldOperand(callee, JSFunction::kSharedFunctionInfoOffset)); |
| 185 | __ movp(data, FieldOperand(data, SharedFunctionInfo::kFunctionDataOffset)); |
| 186 | __ movp(data, FieldOperand(data, FunctionTemplateInfo::kCallCodeOffset)); |
| 187 | __ movp(data, FieldOperand(data, CallHandlerInfo::kDataOffset)); |
| 188 | } |
| 189 | |
| 190 | if (api_call_info->fast_handler()->IsCode()) { |
| 191 | // Just tail call into the fast handler if present. |
| 192 | __ Jump(handle(Code::cast(api_call_info->fast_handler())), |
| 193 | RelocInfo::CODE_TARGET); |
| 194 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | // Put api_function_address in place. |
| 198 | Address function_address = v8::ToCData<Address>(api_call_info->callback()); |
| 199 | __ Move(api_function_address, function_address, |
| 200 | RelocInfo::EXTERNAL_REFERENCE); |
| 201 | |
| 202 | // Jump to stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 203 | CallApiAccessorStub stub(isolate, is_store, call_data_undefined); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 204 | __ TailCallStub(&stub); |
| 205 | } |
| 206 | |
| 207 | |
| 208 | void PropertyHandlerCompiler::GenerateCheckPropertyCell( |
| 209 | MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name, |
| 210 | Register scratch, Label* miss) { |
| 211 | Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name); |
| 212 | DCHECK(cell->value()->IsTheHole()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 213 | Factory* factory = masm->isolate()->factory(); |
| 214 | Handle<WeakCell> weak_cell = factory->NewWeakCell(cell); |
| 215 | __ LoadWeakValue(scratch, weak_cell, miss); |
| 216 | __ Cmp(FieldOperand(scratch, PropertyCell::kValueOffset), |
| 217 | factory->the_hole_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | __ j(not_equal, miss); |
| 219 | } |
| 220 | |
| 221 | |
| 222 | void NamedStoreHandlerCompiler::GenerateStoreViaSetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 223 | MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder, |
| 224 | int accessor_index, int expected_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 225 | // ----------- S t a t e ------------- |
| 226 | // -- rsp[0] : return address |
| 227 | // ----------------------------------- |
| 228 | { |
| 229 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 230 | |
| 231 | // Save value register, so we can restore it later. |
| 232 | __ Push(value()); |
| 233 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 234 | if (accessor_index >= 0) { |
| 235 | DCHECK(!holder.is(scratch)); |
| 236 | DCHECK(!receiver.is(scratch)); |
| 237 | DCHECK(!value().is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 238 | // Call the JavaScript setter with receiver and value on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 239 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 240 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 241 | __ movp(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 242 | FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 243 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 244 | } |
| 245 | __ Push(receiver); |
| 246 | __ Push(value()); |
| 247 | ParameterCount actual(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 248 | ParameterCount expected(expected_arguments); |
| 249 | __ LoadAccessor(rdi, holder, accessor_index, ACCESSOR_SETTER); |
| 250 | __ InvokeFunction(rdi, no_reg, expected, actual, CALL_FUNCTION, |
| 251 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 252 | } else { |
| 253 | // If we generate a global code snippet for deoptimization only, remember |
| 254 | // the place to continue after deoptimization. |
| 255 | masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset()); |
| 256 | } |
| 257 | |
| 258 | // We have to return the passed value, not the return value of the setter. |
| 259 | __ Pop(rax); |
| 260 | |
| 261 | // Restore context register. |
| 262 | __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 263 | } |
| 264 | __ ret(0); |
| 265 | } |
| 266 | |
| 267 | |
| 268 | void NamedLoadHandlerCompiler::GenerateLoadViaGetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 269 | MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder, |
| 270 | int accessor_index, int expected_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 271 | // ----------- S t a t e ------------- |
| 272 | // -- rax : receiver |
| 273 | // -- rcx : name |
| 274 | // -- rsp[0] : return address |
| 275 | // ----------------------------------- |
| 276 | { |
| 277 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 278 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 279 | if (accessor_index >= 0) { |
| 280 | DCHECK(!holder.is(scratch)); |
| 281 | DCHECK(!receiver.is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | // Call the JavaScript getter with the receiver on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 283 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 284 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 285 | __ movp(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 286 | FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 287 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 288 | } |
| 289 | __ Push(receiver); |
| 290 | ParameterCount actual(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 291 | ParameterCount expected(expected_arguments); |
| 292 | __ LoadAccessor(rdi, holder, accessor_index, ACCESSOR_GETTER); |
| 293 | __ InvokeFunction(rdi, no_reg, expected, actual, CALL_FUNCTION, |
| 294 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 295 | } else { |
| 296 | // If we generate a global code snippet for deoptimization only, remember |
| 297 | // the place to continue after deoptimization. |
| 298 | masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset()); |
| 299 | } |
| 300 | |
| 301 | // Restore context register. |
| 302 | __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 303 | } |
| 304 | __ ret(0); |
| 305 | } |
| 306 | |
| 307 | |
| 308 | static void StoreIC_PushArgs(MacroAssembler* masm) { |
| 309 | Register receiver = StoreDescriptor::ReceiverRegister(); |
| 310 | Register name = StoreDescriptor::NameRegister(); |
| 311 | Register value = StoreDescriptor::ValueRegister(); |
| 312 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 313 | Register slot = VectorStoreICDescriptor::SlotRegister(); |
| 314 | Register vector = VectorStoreICDescriptor::VectorRegister(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 315 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 316 | __ PopReturnAddressTo(r11); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 317 | __ Push(receiver); |
| 318 | __ Push(name); |
| 319 | __ Push(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 320 | __ Push(slot); |
| 321 | __ Push(vector); |
| 322 | __ PushReturnAddressFrom(r11); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | |
| 326 | void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) { |
| 327 | // Return address is on the stack. |
| 328 | StoreIC_PushArgs(masm); |
| 329 | |
| 330 | // Do tail-call to runtime routine. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 331 | __ TailCallRuntime(Runtime::kStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | |
| 335 | void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) { |
| 336 | // Return address is on the stack. |
| 337 | StoreIC_PushArgs(masm); |
| 338 | |
| 339 | // Do tail-call to runtime routine. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 340 | __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | |
| 344 | #undef __ |
| 345 | #define __ ACCESS_MASM((masm())) |
| 346 | |
| 347 | |
| 348 | void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label, |
| 349 | Handle<Name> name) { |
| 350 | if (!label->is_unused()) { |
| 351 | __ bind(label); |
| 352 | __ Move(this->name(), name); |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 357 | void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) { |
| 358 | __ Move(this->name(), name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 362 | void NamedStoreHandlerCompiler::RearrangeVectorAndSlot( |
| 363 | Register current_map, Register destination_map) { |
| 364 | DCHECK(false); // Not implemented. |
| 365 | } |
| 366 | |
| 367 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 368 | void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 369 | Register map_reg, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 370 | Register scratch, |
| 371 | Label* miss) { |
| 372 | Handle<WeakCell> cell = Map::WeakCellForMap(transition); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 373 | DCHECK(!map_reg.is(scratch)); |
| 374 | __ LoadWeakValue(map_reg, cell, miss); |
| 375 | if (transition->CanBeDeprecated()) { |
| 376 | __ movl(scratch, FieldOperand(map_reg, Map::kBitField3Offset)); |
| 377 | __ andl(scratch, Immediate(Map::Deprecated::kMask)); |
| 378 | __ j(not_zero, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 379 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 380 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 381 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 382 | |
| 383 | void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg, |
| 384 | int descriptor, |
| 385 | Register value_reg, |
| 386 | Register scratch, |
| 387 | Label* miss_label) { |
| 388 | DCHECK(!map_reg.is(scratch)); |
| 389 | DCHECK(!map_reg.is(value_reg)); |
| 390 | DCHECK(!value_reg.is(scratch)); |
| 391 | __ LoadInstanceDescriptors(map_reg, scratch); |
| 392 | __ movp(scratch, |
| 393 | FieldOperand(scratch, DescriptorArray::GetValueOffset(descriptor))); |
| 394 | __ cmpp(value_reg, scratch); |
| 395 | __ j(not_equal, miss_label); |
| 396 | } |
| 397 | |
| 398 | |
| 399 | void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type, |
| 400 | Register value_reg, |
| 401 | Label* miss_label) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 402 | Register map_reg = scratch1(); |
| 403 | Register scratch = scratch2(); |
| 404 | DCHECK(!value_reg.is(map_reg)); |
| 405 | DCHECK(!value_reg.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 406 | __ JumpIfSmi(value_reg, miss_label); |
| 407 | HeapType::Iterator<Map> it = field_type->Classes(); |
| 408 | if (!it.Done()) { |
| 409 | Label do_store; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 410 | __ movp(map_reg, FieldOperand(value_reg, HeapObject::kMapOffset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 411 | while (true) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 412 | __ CmpWeakValue(map_reg, Map::WeakCellForMap(it.Current()), scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 413 | it.Advance(); |
| 414 | if (it.Done()) { |
| 415 | __ j(not_equal, miss_label); |
| 416 | break; |
| 417 | } |
| 418 | __ j(equal, &do_store, Label::kNear); |
| 419 | } |
| 420 | __ bind(&do_store); |
| 421 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | |
| 425 | Register PropertyHandlerCompiler::CheckPrototypes( |
| 426 | Register object_reg, Register holder_reg, Register scratch1, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 427 | Register scratch2, Handle<Name> name, Label* miss, PrototypeCheckType check, |
| 428 | ReturnHolder return_what) { |
| 429 | Handle<Map> receiver_map = map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 430 | |
| 431 | // Make sure there's no overlap between holder and object registers. |
| 432 | DCHECK(!scratch1.is(object_reg) && !scratch1.is(holder_reg)); |
| 433 | DCHECK(!scratch2.is(object_reg) && !scratch2.is(holder_reg) && |
| 434 | !scratch2.is(scratch1)); |
| 435 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 436 | if (FLAG_eliminate_prototype_chain_checks) { |
| 437 | Handle<Cell> validity_cell = |
| 438 | Map::GetOrCreatePrototypeChainValidityCell(receiver_map, isolate()); |
| 439 | if (!validity_cell.is_null()) { |
| 440 | DCHECK_EQ(Smi::FromInt(Map::kPrototypeChainValid), |
| 441 | validity_cell->value()); |
| 442 | __ Move(scratch1, validity_cell, RelocInfo::CELL); |
| 443 | // Move(..., CELL) loads the payload's address! |
| 444 | __ SmiCompare(Operand(scratch1, 0), |
| 445 | Smi::FromInt(Map::kPrototypeChainValid)); |
| 446 | __ j(not_equal, miss); |
| 447 | } |
| 448 | |
| 449 | // The prototype chain of primitives (and their JSValue wrappers) depends |
| 450 | // on the native context, which can't be guarded by validity cells. |
| 451 | // |object_reg| holds the native context specific prototype in this case; |
| 452 | // we need to check its map. |
| 453 | if (check == CHECK_ALL_MAPS) { |
| 454 | __ movp(scratch1, FieldOperand(object_reg, HeapObject::kMapOffset)); |
| 455 | Handle<WeakCell> cell = Map::WeakCellForMap(receiver_map); |
| 456 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 457 | __ j(not_equal, miss); |
| 458 | } |
| 459 | } |
| 460 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 461 | // Keep track of the current object in register reg. On the first |
| 462 | // iteration, reg is an alias for object_reg, on later iterations, |
| 463 | // it is an alias for holder_reg. |
| 464 | Register reg = object_reg; |
| 465 | int depth = 0; |
| 466 | |
| 467 | Handle<JSObject> current = Handle<JSObject>::null(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 468 | if (receiver_map->IsJSGlobalObjectMap()) { |
| 469 | current = isolate()->global_object(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 470 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 471 | |
| 472 | // Check access rights to the global object. This has to happen after |
| 473 | // the map check so that we know that the object is actually a global |
| 474 | // object. |
| 475 | // This allows us to install generated handlers for accesses to the |
| 476 | // global proxy (as opposed to using slow ICs). See corresponding code |
| 477 | // in LookupForRead(). |
| 478 | if (receiver_map->IsJSGlobalProxyMap()) { |
| 479 | __ CheckAccessGlobalProxy(reg, scratch2, miss); |
| 480 | } |
| 481 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 482 | Handle<JSObject> prototype = Handle<JSObject>::null(); |
| 483 | Handle<Map> current_map = receiver_map; |
| 484 | Handle<Map> holder_map(holder()->map()); |
| 485 | // Traverse the prototype chain and check the maps in the prototype chain for |
| 486 | // fast and global objects or do negative lookup for normal objects. |
| 487 | while (!current_map.is_identical_to(holder_map)) { |
| 488 | ++depth; |
| 489 | |
| 490 | // Only global objects and objects that do not require access |
| 491 | // checks are allowed in stubs. |
| 492 | DCHECK(current_map->IsJSGlobalProxyMap() || |
| 493 | !current_map->is_access_check_needed()); |
| 494 | |
| 495 | prototype = handle(JSObject::cast(current_map->prototype())); |
| 496 | if (current_map->is_dictionary_map() && |
| 497 | !current_map->IsJSGlobalObjectMap()) { |
| 498 | DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast. |
| 499 | if (!name->IsUniqueName()) { |
| 500 | DCHECK(name->IsString()); |
| 501 | name = factory()->InternalizeString(Handle<String>::cast(name)); |
| 502 | } |
| 503 | DCHECK(current.is_null() || |
| 504 | current->property_dictionary()->FindEntry(name) == |
| 505 | NameDictionary::kNotFound); |
| 506 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 507 | if (FLAG_eliminate_prototype_chain_checks && depth > 1) { |
| 508 | // TODO(jkummerow): Cache and re-use weak cell. |
| 509 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
| 510 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 511 | GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1, |
| 512 | scratch2); |
| 513 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 514 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 515 | __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| 516 | __ movp(holder_reg, FieldOperand(scratch1, Map::kPrototypeOffset)); |
| 517 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 518 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 519 | Register map_reg = scratch1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 520 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 521 | __ movp(map_reg, FieldOperand(reg, HeapObject::kMapOffset)); |
| 522 | } |
| 523 | if (current_map->IsJSGlobalObjectMap()) { |
| 524 | GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current), |
| 525 | name, scratch2, miss); |
| 526 | } else if (!FLAG_eliminate_prototype_chain_checks && |
| 527 | (depth != 1 || check == CHECK_ALL_MAPS)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 528 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 529 | __ CmpWeakValue(map_reg, cell, scratch2); |
| 530 | __ j(not_equal, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 531 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 532 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 533 | __ movp(holder_reg, FieldOperand(map_reg, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 534 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 535 | } |
| 536 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 537 | reg = holder_reg; // From now on the object will be in holder_reg. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 538 | // Go to the next object in the prototype chain. |
| 539 | current = prototype; |
| 540 | current_map = handle(current->map()); |
| 541 | } |
| 542 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 543 | DCHECK(!current_map->IsJSGlobalProxyMap()); |
| 544 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 545 | // Log the check depth. |
| 546 | LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); |
| 547 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 548 | if (!FLAG_eliminate_prototype_chain_checks && |
| 549 | (depth != 0 || check == CHECK_ALL_MAPS)) { |
| 550 | // Check the holder map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 551 | __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| 552 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 553 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 554 | __ j(not_equal, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 555 | } |
| 556 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 557 | bool return_holder = return_what == RETURN_HOLDER; |
| 558 | if (FLAG_eliminate_prototype_chain_checks && return_holder && depth != 0) { |
| 559 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 560 | } |
| 561 | |
| 562 | // Return the register containing the holder. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 563 | return return_holder ? reg : no_reg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | |
| 567 | void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 568 | if (!miss->is_unused()) { |
| 569 | Label success; |
| 570 | __ jmp(&success); |
| 571 | __ bind(miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 572 | if (IC::ICUseVector(kind())) { |
| 573 | DCHECK(kind() == Code::LOAD_IC); |
| 574 | PopVectorAndSlot(); |
| 575 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 576 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 577 | __ bind(&success); |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | |
| 582 | void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 583 | if (!miss->is_unused()) { |
| 584 | Label success; |
| 585 | __ jmp(&success); |
| 586 | GenerateRestoreName(miss, name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 587 | if (IC::ICUseVector(kind())) PopVectorAndSlot(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 588 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 589 | __ bind(&success); |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | |
| 594 | void NamedLoadHandlerCompiler::GenerateLoadCallback( |
| 595 | Register reg, Handle<ExecutableAccessorInfo> callback) { |
| 596 | // Insert additional parameters into the stack frame above return address. |
| 597 | DCHECK(!scratch4().is(reg)); |
| 598 | __ PopReturnAddressTo(scratch4()); |
| 599 | |
| 600 | STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0); |
| 601 | STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1); |
| 602 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2); |
| 603 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3); |
| 604 | STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4); |
| 605 | STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5); |
| 606 | STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 6); |
| 607 | __ Push(receiver()); // receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 608 | Handle<Object> data(callback->data(), isolate()); |
| 609 | if (data->IsUndefined() || data->IsSmi()) { |
| 610 | __ Push(data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 611 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 612 | DCHECK(!scratch2().is(reg)); |
| 613 | Handle<WeakCell> cell = |
| 614 | isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data)); |
| 615 | // The callback is alive if this instruction is executed, |
| 616 | // so the weak cell is not cleared and points to data. |
| 617 | __ GetWeakValue(scratch2(), cell); |
| 618 | __ Push(scratch2()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 619 | } |
| 620 | DCHECK(!kScratchRegister.is(reg)); |
| 621 | __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
| 622 | __ Push(kScratchRegister); // return value |
| 623 | __ Push(kScratchRegister); // return value default |
| 624 | __ PushAddress(ExternalReference::isolate_address(isolate())); |
| 625 | __ Push(reg); // holder |
| 626 | __ Push(name()); // name |
| 627 | // Save a pointer to where we pushed the arguments pointer. This will be |
| 628 | // passed as the const PropertyAccessorInfo& to the C++ callback. |
| 629 | |
| 630 | __ PushReturnAddressFrom(scratch4()); |
| 631 | |
| 632 | // Abi for CallApiGetter |
| 633 | Register api_function_address = ApiGetterDescriptor::function_address(); |
| 634 | Address getter_address = v8::ToCData<Address>(callback->getter()); |
| 635 | __ Move(api_function_address, getter_address, RelocInfo::EXTERNAL_REFERENCE); |
| 636 | |
| 637 | CallApiGetterStub stub(isolate()); |
| 638 | __ TailCallStub(&stub); |
| 639 | } |
| 640 | |
| 641 | |
| 642 | void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) { |
| 643 | // Return the constant value. |
| 644 | __ Move(rax, value); |
| 645 | __ ret(0); |
| 646 | } |
| 647 | |
| 648 | |
| 649 | void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup( |
| 650 | LookupIterator* it, Register holder_reg) { |
| 651 | DCHECK(holder()->HasNamedInterceptor()); |
| 652 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 653 | |
| 654 | // Compile the interceptor call, followed by inline code to load the |
| 655 | // property from further up the prototype chain if the call fails. |
| 656 | // Check that the maps haven't changed. |
| 657 | DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1())); |
| 658 | |
| 659 | // Preserve the receiver register explicitly whenever it is different from the |
| 660 | // holder and it is needed should the interceptor return without any result. |
| 661 | // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD |
| 662 | // case might cause a miss during the prototype check. |
| 663 | bool must_perform_prototype_check = |
| 664 | !holder().is_identical_to(it->GetHolder<JSObject>()); |
| 665 | bool must_preserve_receiver_reg = |
| 666 | !receiver().is(holder_reg) && |
| 667 | (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check); |
| 668 | |
| 669 | // Save necessary data before invoking an interceptor. |
| 670 | // Requires a frame to make GC aware of pushed pointers. |
| 671 | { |
| 672 | FrameScope frame_scope(masm(), StackFrame::INTERNAL); |
| 673 | |
| 674 | if (must_preserve_receiver_reg) { |
| 675 | __ Push(receiver()); |
| 676 | } |
| 677 | __ Push(holder_reg); |
| 678 | __ Push(this->name()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 679 | InterceptorVectorSlotPush(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 680 | |
| 681 | // Invoke an interceptor. Note: map checks from receiver to |
| 682 | // interceptor's holder has been compiled before (see a caller |
| 683 | // of this method.) |
| 684 | CompileCallLoadPropertyWithInterceptor( |
| 685 | masm(), receiver(), holder_reg, this->name(), holder(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 686 | Runtime::kLoadPropertyWithInterceptorOnly); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 687 | |
| 688 | // Check if interceptor provided a value for property. If it's |
| 689 | // the case, return immediately. |
| 690 | Label interceptor_failed; |
| 691 | __ CompareRoot(rax, Heap::kNoInterceptorResultSentinelRootIndex); |
| 692 | __ j(equal, &interceptor_failed); |
| 693 | frame_scope.GenerateLeaveFrame(); |
| 694 | __ ret(0); |
| 695 | |
| 696 | __ bind(&interceptor_failed); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 697 | InterceptorVectorSlotPop(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 698 | __ Pop(this->name()); |
| 699 | __ Pop(holder_reg); |
| 700 | if (must_preserve_receiver_reg) { |
| 701 | __ Pop(receiver()); |
| 702 | } |
| 703 | |
| 704 | // Leave the internal frame. |
| 705 | } |
| 706 | |
| 707 | GenerateLoadPostInterceptor(it, holder_reg); |
| 708 | } |
| 709 | |
| 710 | |
| 711 | void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) { |
| 712 | // Call the runtime system to load the interceptor. |
| 713 | DCHECK(holder()->HasNamedInterceptor()); |
| 714 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 715 | __ PopReturnAddressTo(scratch2()); |
| 716 | PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(), |
| 717 | holder()); |
| 718 | __ PushReturnAddressFrom(scratch2()); |
| 719 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 720 | __ TailCallRuntime(Runtime::kLoadPropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | |
| 724 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback( |
| 725 | Handle<JSObject> object, Handle<Name> name, |
| 726 | Handle<ExecutableAccessorInfo> callback) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 727 | Register holder_reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 728 | |
| 729 | __ PopReturnAddressTo(scratch1()); |
| 730 | __ Push(receiver()); |
| 731 | __ Push(holder_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 732 | // If the callback cannot leak, then push the callback directly, |
| 733 | // otherwise wrap it in a weak cell. |
| 734 | if (callback->data()->IsUndefined() || callback->data()->IsSmi()) { |
| 735 | __ Push(callback); |
| 736 | } else { |
| 737 | Handle<WeakCell> cell = isolate()->factory()->NewWeakCell(callback); |
| 738 | __ Push(cell); |
| 739 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 740 | __ Push(name); |
| 741 | __ Push(value()); |
| 742 | __ PushReturnAddressFrom(scratch1()); |
| 743 | |
| 744 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 745 | __ TailCallRuntime(Runtime::kStoreCallbackProperty); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 746 | |
| 747 | // Return the generated code. |
| 748 | return GetCode(kind(), Code::FAST, name); |
| 749 | } |
| 750 | |
| 751 | |
| 752 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor( |
| 753 | Handle<Name> name) { |
| 754 | __ PopReturnAddressTo(scratch1()); |
| 755 | __ Push(receiver()); |
| 756 | __ Push(this->name()); |
| 757 | __ Push(value()); |
| 758 | __ PushReturnAddressFrom(scratch1()); |
| 759 | |
| 760 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 761 | __ TailCallRuntime(Runtime::kStorePropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 762 | |
| 763 | // Return the generated code. |
| 764 | return GetCode(kind(), Code::FAST, name); |
| 765 | } |
| 766 | |
| 767 | |
| 768 | Register NamedStoreHandlerCompiler::value() { |
| 769 | return StoreDescriptor::ValueRegister(); |
| 770 | } |
| 771 | |
| 772 | |
| 773 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal( |
| 774 | Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) { |
| 775 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 776 | if (IC::ICUseVector(kind())) { |
| 777 | PushVectorAndSlot(); |
| 778 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 779 | FrontendHeader(receiver(), name, &miss, DONT_RETURN_ANYTHING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 780 | |
| 781 | // Get the value from the cell. |
| 782 | Register result = StoreDescriptor::ValueRegister(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 783 | Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell); |
| 784 | __ LoadWeakValue(result, weak_cell, &miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 785 | __ movp(result, FieldOperand(result, PropertyCell::kValueOffset)); |
| 786 | |
| 787 | // Check for deleted property if property can actually be deleted. |
| 788 | if (is_configurable) { |
| 789 | __ CompareRoot(result, Heap::kTheHoleValueRootIndex); |
| 790 | __ j(equal, &miss); |
| 791 | } else if (FLAG_debug_code) { |
| 792 | __ CompareRoot(result, Heap::kTheHoleValueRootIndex); |
| 793 | __ Check(not_equal, kDontDeleteCellsCannotContainTheHole); |
| 794 | } |
| 795 | |
| 796 | Counters* counters = isolate()->counters(); |
| 797 | __ IncrementCounter(counters->named_load_global_stub(), 1); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 798 | if (IC::ICUseVector(kind())) { |
| 799 | DiscardVectorAndSlot(); |
| 800 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 801 | __ ret(0); |
| 802 | |
| 803 | FrontendFooter(name, &miss); |
| 804 | |
| 805 | // Return the generated code. |
| 806 | return GetCode(kind(), Code::NORMAL, name); |
| 807 | } |
| 808 | |
| 809 | |
| 810 | #undef __ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 811 | } // namespace internal |
| 812 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 813 | |
| 814 | #endif // V8_TARGET_ARCH_X64 |