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_ARM64 |
| 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/ic/handler-compiler.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 8 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 9 | #include "src/api-arguments.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 10 | #include "src/field-type.h" |
| 11 | #include "src/ic/call-optimization.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 12 | #include "src/ic/ic.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 13 | #include "src/isolate-inl.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 14 | |
| 15 | namespace v8 { |
| 16 | namespace internal { |
| 17 | |
| 18 | #define __ ACCESS_MASM(masm) |
| 19 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 20 | void PropertyHandlerCompiler::PushVectorAndSlot(Register vector, |
| 21 | Register slot) { |
| 22 | MacroAssembler* masm = this->masm(); |
| 23 | __ Push(vector); |
| 24 | __ Push(slot); |
| 25 | } |
| 26 | |
| 27 | |
| 28 | void PropertyHandlerCompiler::PopVectorAndSlot(Register vector, Register slot) { |
| 29 | MacroAssembler* masm = this->masm(); |
| 30 | __ Pop(slot); |
| 31 | __ Pop(vector); |
| 32 | } |
| 33 | |
| 34 | |
| 35 | void PropertyHandlerCompiler::DiscardVectorAndSlot() { |
| 36 | MacroAssembler* masm = this->masm(); |
| 37 | // Remove vector and slot. |
| 38 | __ Drop(2); |
| 39 | } |
| 40 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 41 | |
| 42 | void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup( |
| 43 | MacroAssembler* masm, Label* miss_label, Register receiver, |
| 44 | Handle<Name> name, Register scratch0, Register scratch1) { |
| 45 | DCHECK(!AreAliased(receiver, scratch0, scratch1)); |
| 46 | DCHECK(name->IsUniqueName()); |
| 47 | Counters* counters = masm->isolate()->counters(); |
| 48 | __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1); |
| 49 | __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1); |
| 50 | |
| 51 | Label done; |
| 52 | |
| 53 | const int kInterceptorOrAccessCheckNeededMask = |
| 54 | (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded); |
| 55 | |
| 56 | // Bail out if the receiver has a named interceptor or requires access checks. |
| 57 | Register map = scratch1; |
| 58 | __ Ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 59 | __ Ldrb(scratch0, FieldMemOperand(map, Map::kBitFieldOffset)); |
| 60 | __ Tst(scratch0, kInterceptorOrAccessCheckNeededMask); |
| 61 | __ B(ne, miss_label); |
| 62 | |
| 63 | // Check that receiver is a JSObject. |
| 64 | __ Ldrb(scratch0, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 65 | __ Cmp(scratch0, FIRST_JS_RECEIVER_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 66 | __ B(lt, miss_label); |
| 67 | |
| 68 | // Load properties array. |
| 69 | Register properties = scratch0; |
| 70 | __ Ldr(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
| 71 | // Check that the properties array is a dictionary. |
| 72 | __ Ldr(map, FieldMemOperand(properties, HeapObject::kMapOffset)); |
| 73 | __ JumpIfNotRoot(map, Heap::kHashTableMapRootIndex, miss_label); |
| 74 | |
| 75 | NameDictionaryLookupStub::GenerateNegativeLookup( |
| 76 | masm, miss_label, &done, receiver, properties, name, scratch1); |
| 77 | __ Bind(&done); |
| 78 | __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1); |
| 79 | } |
| 80 | |
| 81 | |
| 82 | void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 83 | MacroAssembler* masm, int index, Register result, Label* miss) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 84 | __ LoadNativeContextSlot(index, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 85 | // Load its initial map. The global functions all have initial maps. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 86 | __ Ldr(result, |
| 87 | FieldMemOperand(result, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 88 | // Load the prototype from the initial map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 89 | __ Ldr(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | |
| 93 | void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype( |
| 94 | MacroAssembler* masm, Register receiver, Register scratch1, |
| 95 | Register scratch2, Label* miss_label) { |
| 96 | __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label); |
| 97 | // TryGetFunctionPrototype can't put the result directly in x0 because the |
| 98 | // 3 inputs registers can't alias and we call this function from |
| 99 | // LoadIC::GenerateFunctionPrototype, where receiver is x0. So we explicitly |
| 100 | // move the result in x0. |
| 101 | __ Mov(x0, scratch1); |
| 102 | __ Ret(); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | // Generate code to check that a global property cell is empty. Create |
| 107 | // the property cell at compilation time if no cell exists for the |
| 108 | // property. |
| 109 | void PropertyHandlerCompiler::GenerateCheckPropertyCell( |
| 110 | MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name, |
| 111 | Register scratch, Label* miss) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 112 | Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 113 | DCHECK(cell->value()->IsTheHole()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 114 | Handle<WeakCell> weak_cell = masm->isolate()->factory()->NewWeakCell(cell); |
| 115 | __ LoadWeakValue(scratch, weak_cell, miss); |
| 116 | __ Ldr(scratch, FieldMemOperand(scratch, PropertyCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 117 | __ JumpIfNotRoot(scratch, Heap::kTheHoleValueRootIndex, miss); |
| 118 | } |
| 119 | |
| 120 | |
| 121 | static void PushInterceptorArguments(MacroAssembler* masm, Register receiver, |
| 122 | Register holder, Register name, |
| 123 | Handle<JSObject> holder_obj) { |
| 124 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 125 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex == 1); |
| 126 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex == 2); |
| 127 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsLength == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 128 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 129 | __ Push(name, receiver, holder); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | |
| 133 | static void CompileCallLoadPropertyWithInterceptor( |
| 134 | MacroAssembler* masm, Register receiver, Register holder, Register name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 135 | Handle<JSObject> holder_obj, Runtime::FunctionId id) { |
| 136 | DCHECK(NamedLoadHandlerCompiler::kInterceptorArgsLength == |
| 137 | Runtime::FunctionForId(id)->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | PushInterceptorArguments(masm, receiver, holder, name, holder_obj); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 139 | __ CallRuntime(id); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | |
| 143 | // Generate call to api function. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 144 | void PropertyHandlerCompiler::GenerateApiAccessorCall( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 145 | MacroAssembler* masm, const CallOptimization& optimization, |
| 146 | Handle<Map> receiver_map, Register receiver, Register scratch, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 147 | bool is_store, Register store_parameter, Register accessor_holder, |
| 148 | int accessor_index) { |
| 149 | DCHECK(!AreAliased(accessor_holder, scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 150 | DCHECK(!AreAliased(receiver, scratch)); |
| 151 | |
| 152 | MacroAssembler::PushPopQueue queue(masm); |
| 153 | queue.Queue(receiver); |
| 154 | // Write the arguments to the stack frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 155 | if (is_store) { |
| 156 | DCHECK(!receiver.is(store_parameter)); |
| 157 | DCHECK(!scratch.is(store_parameter)); |
| 158 | queue.Queue(store_parameter); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 159 | } |
| 160 | queue.PushQueued(); |
| 161 | |
| 162 | DCHECK(optimization.is_simple_api_call()); |
| 163 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 164 | // Abi for CallApiCallbackStub. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 165 | Register callee = x0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 166 | Register data = x4; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 167 | Register holder = x2; |
| 168 | Register api_function_address = x1; |
| 169 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 170 | // Put callee in place. |
| 171 | __ LoadAccessor(callee, accessor_holder, accessor_index, |
| 172 | is_store ? ACCESSOR_SETTER : ACCESSOR_GETTER); |
| 173 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 174 | // Put holder in place. |
| 175 | CallOptimization::HolderLookup holder_lookup; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 176 | int holder_depth = 0; |
| 177 | optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup, |
| 178 | &holder_depth); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 179 | switch (holder_lookup) { |
| 180 | case CallOptimization::kHolderIsReceiver: |
| 181 | __ Mov(holder, receiver); |
| 182 | break; |
| 183 | case CallOptimization::kHolderFound: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 184 | __ Ldr(holder, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 185 | __ Ldr(holder, FieldMemOperand(holder, Map::kPrototypeOffset)); |
| 186 | for (int i = 1; i < holder_depth; i++) { |
| 187 | __ Ldr(holder, FieldMemOperand(holder, HeapObject::kMapOffset)); |
| 188 | __ Ldr(holder, FieldMemOperand(holder, Map::kPrototypeOffset)); |
| 189 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 190 | break; |
| 191 | case CallOptimization::kHolderNotFound: |
| 192 | UNREACHABLE(); |
| 193 | break; |
| 194 | } |
| 195 | |
| 196 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 197 | Handle<CallHandlerInfo> api_call_info = optimization.api_call_info(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 198 | bool call_data_undefined = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 199 | // Put call data in place. |
| 200 | if (api_call_info->data()->IsUndefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 201 | call_data_undefined = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 202 | __ LoadRoot(data, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 203 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 204 | if (optimization.is_constant_call()) { |
| 205 | __ Ldr(data, |
| 206 | FieldMemOperand(callee, JSFunction::kSharedFunctionInfoOffset)); |
| 207 | __ Ldr(data, |
| 208 | FieldMemOperand(data, SharedFunctionInfo::kFunctionDataOffset)); |
| 209 | __ Ldr(data, |
| 210 | FieldMemOperand(data, FunctionTemplateInfo::kCallCodeOffset)); |
| 211 | } else { |
| 212 | __ Ldr(data, |
| 213 | FieldMemOperand(callee, FunctionTemplateInfo::kCallCodeOffset)); |
| 214 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 215 | __ Ldr(data, FieldMemOperand(data, CallHandlerInfo::kDataOffset)); |
| 216 | } |
| 217 | |
| 218 | if (api_call_info->fast_handler()->IsCode()) { |
| 219 | // Just tail call into the fast handler if present. |
| 220 | __ Jump(handle(Code::cast(api_call_info->fast_handler())), |
| 221 | RelocInfo::CODE_TARGET); |
| 222 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | // Put api_function_address in place. |
| 226 | Address function_address = v8::ToCData<Address>(api_call_info->callback()); |
| 227 | ApiFunction fun(function_address); |
| 228 | ExternalReference ref = ExternalReference( |
| 229 | &fun, ExternalReference::DIRECT_API_CALL, masm->isolate()); |
| 230 | __ Mov(api_function_address, ref); |
| 231 | |
| 232 | // Jump to stub. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 233 | CallApiCallbackStub stub(isolate, is_store, call_data_undefined, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 234 | !optimization.is_constant_call()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 235 | __ TailCallStub(&stub); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | void NamedStoreHandlerCompiler::GenerateStoreViaSetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 240 | MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder, |
| 241 | int accessor_index, int expected_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 242 | // ----------- S t a t e ------------- |
| 243 | // -- lr : return address |
| 244 | // ----------------------------------- |
| 245 | Label miss; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 246 | { |
| 247 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 248 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 249 | // Save context register |
| 250 | __ Push(cp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 251 | // Save value register, so we can restore it later. |
| 252 | __ Push(value()); |
| 253 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 254 | if (accessor_index >= 0) { |
| 255 | DCHECK(!AreAliased(holder, scratch)); |
| 256 | DCHECK(!AreAliased(receiver, scratch)); |
| 257 | DCHECK(!AreAliased(value(), scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 258 | // Call the JavaScript setter with receiver and value on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 259 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 260 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 261 | __ Ldr(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 262 | FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 263 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 264 | } |
| 265 | __ Push(receiver, value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 266 | __ LoadAccessor(x1, holder, accessor_index, ACCESSOR_SETTER); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 267 | __ Mov(x0, 1); |
| 268 | __ Call(masm->isolate()->builtins()->CallFunction( |
| 269 | ConvertReceiverMode::kNotNullOrUndefined), |
| 270 | RelocInfo::CODE_TARGET); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 271 | } else { |
| 272 | // If we generate a global code snippet for deoptimization only, remember |
| 273 | // the place to continue after deoptimization. |
| 274 | masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset()); |
| 275 | } |
| 276 | |
| 277 | // We have to return the passed value, not the return value of the setter. |
| 278 | __ Pop(x0); |
| 279 | |
| 280 | // Restore context register. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 281 | __ Pop(cp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | } |
| 283 | __ Ret(); |
| 284 | } |
| 285 | |
| 286 | |
| 287 | void NamedLoadHandlerCompiler::GenerateLoadViaGetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 288 | MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder, |
| 289 | int accessor_index, int expected_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 290 | { |
| 291 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 292 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 293 | // Save context register |
| 294 | __ Push(cp); |
| 295 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 296 | if (accessor_index >= 0) { |
| 297 | DCHECK(!AreAliased(holder, scratch)); |
| 298 | DCHECK(!AreAliased(receiver, scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 299 | // Call the JavaScript getter with the receiver on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 300 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 301 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 302 | __ Ldr(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 303 | FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 304 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 305 | } |
| 306 | __ Push(receiver); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 307 | __ LoadAccessor(x1, holder, accessor_index, ACCESSOR_GETTER); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 308 | __ Mov(x0, 0); |
| 309 | __ Call(masm->isolate()->builtins()->CallFunction( |
| 310 | ConvertReceiverMode::kNotNullOrUndefined), |
| 311 | RelocInfo::CODE_TARGET); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 312 | } else { |
| 313 | // If we generate a global code snippet for deoptimization only, remember |
| 314 | // the place to continue after deoptimization. |
| 315 | masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset()); |
| 316 | } |
| 317 | |
| 318 | // Restore context register. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 319 | __ Pop(cp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 320 | } |
| 321 | __ Ret(); |
| 322 | } |
| 323 | |
| 324 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 325 | static void StoreIC_PushArgs(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 326 | __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 327 | StoreDescriptor::ValueRegister(), |
| 328 | VectorStoreICDescriptor::SlotRegister(), |
| 329 | VectorStoreICDescriptor::VectorRegister()); |
| 330 | } |
| 331 | |
| 332 | |
| 333 | void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) { |
| 334 | StoreIC_PushArgs(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 335 | |
| 336 | // The slow case calls into the runtime to complete the store without causing |
| 337 | // an IC miss that would otherwise cause a transition to the generic stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 338 | __ TailCallRuntime(Runtime::kStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | |
| 342 | void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) { |
| 343 | ASM_LOCATION("ElementHandlerCompiler::GenerateStoreSlow"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 344 | StoreIC_PushArgs(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 345 | |
| 346 | // The slow case calls into the runtime to complete the store without causing |
| 347 | // an IC miss that would otherwise cause a transition to the generic stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 348 | __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 349 | } |
| 350 | |
| 351 | |
| 352 | #undef __ |
| 353 | #define __ ACCESS_MASM(masm()) |
| 354 | |
| 355 | |
| 356 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal( |
| 357 | Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) { |
| 358 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 359 | if (IC::ICUseVector(kind())) { |
| 360 | PushVectorAndSlot(); |
| 361 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 362 | FrontendHeader(receiver(), name, &miss, DONT_RETURN_ANYTHING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 363 | |
| 364 | // Get the value from the cell. |
| 365 | Register result = StoreDescriptor::ValueRegister(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 366 | Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell); |
| 367 | __ LoadWeakValue(result, weak_cell, &miss); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 368 | __ Ldr(result, FieldMemOperand(result, PropertyCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 369 | |
| 370 | // Check for deleted property if property can actually be deleted. |
| 371 | if (is_configurable) { |
| 372 | __ JumpIfRoot(result, Heap::kTheHoleValueRootIndex, &miss); |
| 373 | } |
| 374 | |
| 375 | Counters* counters = isolate()->counters(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 376 | __ IncrementCounter(counters->ic_named_load_global_stub(), 1, x1, x3); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 377 | if (IC::ICUseVector(kind())) { |
| 378 | DiscardVectorAndSlot(); |
| 379 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 380 | __ Ret(); |
| 381 | |
| 382 | FrontendFooter(name, &miss); |
| 383 | |
| 384 | // Return the generated code. |
| 385 | return GetCode(kind(), Code::NORMAL, name); |
| 386 | } |
| 387 | |
| 388 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 389 | Register NamedStoreHandlerCompiler::value() { |
| 390 | return StoreDescriptor::ValueRegister(); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label, |
| 395 | Handle<Name> name) { |
| 396 | if (!label->is_unused()) { |
| 397 | __ Bind(label); |
| 398 | __ Mov(this->name(), Operand(name)); |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 403 | void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) { |
| 404 | __ Mov(this->name(), Operand(name)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 408 | void NamedStoreHandlerCompiler::RearrangeVectorAndSlot( |
| 409 | Register current_map, Register destination_map) { |
| 410 | DCHECK(false); // Not implemented. |
| 411 | } |
| 412 | |
| 413 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 414 | void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 415 | Register map_reg, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 416 | Register scratch, |
| 417 | Label* miss) { |
| 418 | Handle<WeakCell> cell = Map::WeakCellForMap(transition); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 419 | DCHECK(!map_reg.is(scratch)); |
| 420 | __ LoadWeakValue(map_reg, cell, miss); |
| 421 | if (transition->CanBeDeprecated()) { |
| 422 | __ Ldrsw(scratch, FieldMemOperand(map_reg, Map::kBitField3Offset)); |
| 423 | __ TestAndBranchIfAnySet(scratch, Map::Deprecated::kMask, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 424 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 425 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 426 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 427 | |
| 428 | void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg, |
| 429 | int descriptor, |
| 430 | Register value_reg, |
| 431 | Register scratch, |
| 432 | Label* miss_label) { |
| 433 | DCHECK(!map_reg.is(scratch)); |
| 434 | DCHECK(!map_reg.is(value_reg)); |
| 435 | DCHECK(!value_reg.is(scratch)); |
| 436 | __ LoadInstanceDescriptors(map_reg, scratch); |
| 437 | __ Ldr(scratch, |
| 438 | FieldMemOperand(scratch, DescriptorArray::GetValueOffset(descriptor))); |
| 439 | __ Cmp(value_reg, scratch); |
| 440 | __ B(ne, miss_label); |
| 441 | } |
| 442 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 443 | void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(FieldType* field_type, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 444 | Register value_reg, |
| 445 | Label* miss_label) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 446 | Register map_reg = scratch1(); |
| 447 | Register scratch = scratch2(); |
| 448 | DCHECK(!value_reg.is(map_reg)); |
| 449 | DCHECK(!value_reg.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 450 | __ JumpIfSmi(value_reg, miss_label); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 451 | if (field_type->IsClass()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 452 | __ Ldr(map_reg, FieldMemOperand(value_reg, HeapObject::kMapOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 453 | __ CmpWeakValue(map_reg, Map::WeakCellForMap(field_type->AsClass()), |
| 454 | scratch); |
| 455 | __ B(ne, miss_label); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 456 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | |
| 460 | Register PropertyHandlerCompiler::CheckPrototypes( |
| 461 | Register object_reg, Register holder_reg, Register scratch1, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 462 | Register scratch2, Handle<Name> name, Label* miss, PrototypeCheckType check, |
| 463 | ReturnHolder return_what) { |
| 464 | Handle<Map> receiver_map = map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 465 | |
| 466 | // object_reg and holder_reg registers can alias. |
| 467 | DCHECK(!AreAliased(object_reg, scratch1, scratch2)); |
| 468 | DCHECK(!AreAliased(holder_reg, scratch1, scratch2)); |
| 469 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 470 | if (FLAG_eliminate_prototype_chain_checks) { |
| 471 | Handle<Cell> validity_cell = |
| 472 | Map::GetOrCreatePrototypeChainValidityCell(receiver_map, isolate()); |
| 473 | if (!validity_cell.is_null()) { |
| 474 | DCHECK_EQ(Smi::FromInt(Map::kPrototypeChainValid), |
| 475 | validity_cell->value()); |
| 476 | __ Mov(scratch1, Operand(validity_cell)); |
| 477 | __ Ldr(scratch1, FieldMemOperand(scratch1, Cell::kValueOffset)); |
| 478 | __ Cmp(scratch1, Operand(Smi::FromInt(Map::kPrototypeChainValid))); |
| 479 | __ B(ne, miss); |
| 480 | } |
| 481 | |
| 482 | // The prototype chain of primitives (and their JSValue wrappers) depends |
| 483 | // on the native context, which can't be guarded by validity cells. |
| 484 | // |object_reg| holds the native context specific prototype in this case; |
| 485 | // we need to check its map. |
| 486 | if (check == CHECK_ALL_MAPS) { |
| 487 | __ Ldr(scratch1, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
| 488 | Handle<WeakCell> cell = Map::WeakCellForMap(receiver_map); |
| 489 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 490 | __ B(ne, miss); |
| 491 | } |
| 492 | } |
| 493 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 494 | // Keep track of the current object in register reg. |
| 495 | Register reg = object_reg; |
| 496 | int depth = 0; |
| 497 | |
| 498 | Handle<JSObject> current = Handle<JSObject>::null(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 499 | if (receiver_map->IsJSGlobalObjectMap()) { |
| 500 | current = isolate()->global_object(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 501 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 502 | |
| 503 | // Check access rights to the global object. This has to happen after |
| 504 | // the map check so that we know that the object is actually a global |
| 505 | // object. |
| 506 | // This allows us to install generated handlers for accesses to the |
| 507 | // global proxy (as opposed to using slow ICs). See corresponding code |
| 508 | // in LookupForRead(). |
| 509 | if (receiver_map->IsJSGlobalProxyMap()) { |
| 510 | UseScratchRegisterScope temps(masm()); |
| 511 | __ CheckAccessGlobalProxy(reg, scratch2, temps.AcquireX(), miss); |
| 512 | } |
| 513 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 514 | Handle<JSObject> prototype = Handle<JSObject>::null(); |
| 515 | Handle<Map> current_map = receiver_map; |
| 516 | Handle<Map> holder_map(holder()->map()); |
| 517 | // Traverse the prototype chain and check the maps in the prototype chain for |
| 518 | // fast and global objects or do negative lookup for normal objects. |
| 519 | while (!current_map.is_identical_to(holder_map)) { |
| 520 | ++depth; |
| 521 | |
| 522 | // Only global objects and objects that do not require access |
| 523 | // checks are allowed in stubs. |
| 524 | DCHECK(current_map->IsJSGlobalProxyMap() || |
| 525 | !current_map->is_access_check_needed()); |
| 526 | |
| 527 | prototype = handle(JSObject::cast(current_map->prototype())); |
| 528 | if (current_map->is_dictionary_map() && |
| 529 | !current_map->IsJSGlobalObjectMap()) { |
| 530 | DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast. |
| 531 | if (!name->IsUniqueName()) { |
| 532 | DCHECK(name->IsString()); |
| 533 | name = factory()->InternalizeString(Handle<String>::cast(name)); |
| 534 | } |
| 535 | DCHECK(current.is_null() || (current->property_dictionary()->FindEntry( |
| 536 | name) == NameDictionary::kNotFound)); |
| 537 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 538 | if (FLAG_eliminate_prototype_chain_checks && depth > 1) { |
| 539 | // TODO(jkummerow): Cache and re-use weak cell. |
| 540 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
| 541 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 542 | GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1, |
| 543 | scratch2); |
| 544 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 545 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 546 | __ Ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 547 | __ Ldr(holder_reg, FieldMemOperand(scratch1, Map::kPrototypeOffset)); |
| 548 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 549 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 550 | Register map_reg = scratch1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 551 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 552 | __ Ldr(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 553 | } |
| 554 | if (current_map->IsJSGlobalObjectMap()) { |
| 555 | GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current), |
| 556 | name, scratch2, miss); |
| 557 | } else if (!FLAG_eliminate_prototype_chain_checks && |
| 558 | (depth != 1 || check == CHECK_ALL_MAPS)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 559 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 560 | __ CmpWeakValue(map_reg, cell, scratch2); |
| 561 | __ B(ne, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 562 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 563 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 564 | __ Ldr(holder_reg, FieldMemOperand(map_reg, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 565 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 566 | } |
| 567 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 568 | 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] | 569 | // Go to the next object in the prototype chain. |
| 570 | current = prototype; |
| 571 | current_map = handle(current->map()); |
| 572 | } |
| 573 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 574 | DCHECK(!current_map->IsJSGlobalProxyMap()); |
| 575 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 576 | // Log the check depth. |
| 577 | LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); |
| 578 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 579 | if (!FLAG_eliminate_prototype_chain_checks && |
| 580 | (depth != 0 || check == CHECK_ALL_MAPS)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 581 | // Check the holder map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 582 | __ Ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 583 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 584 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 585 | __ B(ne, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 586 | } |
| 587 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 588 | bool return_holder = return_what == RETURN_HOLDER; |
| 589 | if (FLAG_eliminate_prototype_chain_checks && return_holder && depth != 0) { |
| 590 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | // Return the register containing the holder. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 594 | return return_holder ? reg : no_reg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | |
| 598 | void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 599 | if (!miss->is_unused()) { |
| 600 | Label success; |
| 601 | __ B(&success); |
| 602 | |
| 603 | __ Bind(miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 604 | if (IC::ICUseVector(kind())) { |
| 605 | DCHECK(kind() == Code::LOAD_IC); |
| 606 | PopVectorAndSlot(); |
| 607 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 608 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 609 | |
| 610 | __ Bind(&success); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | |
| 615 | void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 616 | if (!miss->is_unused()) { |
| 617 | Label success; |
| 618 | __ B(&success); |
| 619 | |
| 620 | GenerateRestoreName(miss, name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 621 | if (IC::ICUseVector(kind())) PopVectorAndSlot(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 622 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 623 | |
| 624 | __ Bind(&success); |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | |
| 629 | void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) { |
| 630 | // Return the constant value. |
| 631 | __ LoadObject(x0, value); |
| 632 | __ Ret(); |
| 633 | } |
| 634 | |
| 635 | |
| 636 | void NamedLoadHandlerCompiler::GenerateLoadCallback( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 637 | Register reg, Handle<AccessorInfo> callback) { |
| 638 | DCHECK(!AreAliased(scratch2(), scratch3(), scratch4(), receiver())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 639 | DCHECK(!AreAliased(scratch2(), scratch3(), scratch4(), reg)); |
| 640 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 641 | // Build v8::PropertyCallbackInfo::args_ array on the stack and push property |
| 642 | // name below the exit frame to make GC aware of them. |
| 643 | STATIC_ASSERT(PropertyCallbackArguments::kShouldThrowOnErrorIndex == 0); |
| 644 | STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 1); |
| 645 | STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 2); |
| 646 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 3); |
| 647 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 4); |
| 648 | STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 5); |
| 649 | STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 6); |
| 650 | STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 7); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 651 | |
| 652 | __ Push(receiver()); |
| 653 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 654 | Handle<Object> data(callback->data(), isolate()); |
| 655 | if (data->IsUndefined() || data->IsSmi()) { |
| 656 | __ Mov(scratch3(), Operand(data)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 657 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 658 | Handle<WeakCell> cell = |
| 659 | isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data)); |
| 660 | // The callback is alive if this instruction is executed, |
| 661 | // so the weak cell is not cleared and points to data. |
| 662 | __ GetWeakValue(scratch3(), cell); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 663 | } |
| 664 | __ LoadRoot(scratch4(), Heap::kUndefinedValueRootIndex); |
| 665 | __ Mov(scratch2(), Operand(ExternalReference::isolate_address(isolate()))); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 666 | __ Push(scratch3(), scratch4(), scratch4(), scratch2(), reg); |
| 667 | __ Push(Smi::FromInt(0)); // should_throw_on_error -> false |
| 668 | __ Push(name()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 669 | |
| 670 | // Abi for CallApiGetter. |
| 671 | Register getter_address_reg = x2; |
| 672 | |
| 673 | // Set up the call. |
| 674 | Address getter_address = v8::ToCData<Address>(callback->getter()); |
| 675 | ApiFunction fun(getter_address); |
| 676 | ExternalReference::Type type = ExternalReference::DIRECT_GETTER_CALL; |
| 677 | ExternalReference ref = ExternalReference(&fun, type, isolate()); |
| 678 | __ Mov(getter_address_reg, ref); |
| 679 | |
| 680 | CallApiGetterStub stub(isolate()); |
| 681 | __ TailCallStub(&stub); |
| 682 | } |
| 683 | |
| 684 | |
| 685 | void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup( |
| 686 | LookupIterator* it, Register holder_reg) { |
| 687 | DCHECK(!AreAliased(receiver(), this->name(), scratch1(), scratch2(), |
| 688 | scratch3())); |
| 689 | DCHECK(holder()->HasNamedInterceptor()); |
| 690 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 691 | |
| 692 | // Compile the interceptor call, followed by inline code to load the |
| 693 | // property from further up the prototype chain if the call fails. |
| 694 | // Check that the maps haven't changed. |
| 695 | DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1())); |
| 696 | |
| 697 | // Preserve the receiver register explicitly whenever it is different from the |
| 698 | // holder and it is needed should the interceptor return without any result. |
| 699 | // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD |
| 700 | // case might cause a miss during the prototype check. |
| 701 | bool must_perform_prototype_check = |
| 702 | !holder().is_identical_to(it->GetHolder<JSObject>()); |
| 703 | bool must_preserve_receiver_reg = |
| 704 | !receiver().is(holder_reg) && |
| 705 | (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check); |
| 706 | |
| 707 | // Save necessary data before invoking an interceptor. |
| 708 | // Requires a frame to make GC aware of pushed pointers. |
| 709 | { |
| 710 | FrameScope frame_scope(masm(), StackFrame::INTERNAL); |
| 711 | if (must_preserve_receiver_reg) { |
| 712 | __ Push(receiver(), holder_reg, this->name()); |
| 713 | } else { |
| 714 | __ Push(holder_reg, this->name()); |
| 715 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 716 | InterceptorVectorSlotPush(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 717 | // Invoke an interceptor. Note: map checks from receiver to |
| 718 | // interceptor's holder has been compiled before (see a caller |
| 719 | // of this method.) |
| 720 | CompileCallLoadPropertyWithInterceptor( |
| 721 | masm(), receiver(), holder_reg, this->name(), holder(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 722 | Runtime::kLoadPropertyWithInterceptorOnly); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 723 | |
| 724 | // Check if interceptor provided a value for property. If it's |
| 725 | // the case, return immediately. |
| 726 | Label interceptor_failed; |
| 727 | __ JumpIfRoot(x0, Heap::kNoInterceptorResultSentinelRootIndex, |
| 728 | &interceptor_failed); |
| 729 | frame_scope.GenerateLeaveFrame(); |
| 730 | __ Ret(); |
| 731 | |
| 732 | __ Bind(&interceptor_failed); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 733 | InterceptorVectorSlotPop(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 734 | if (must_preserve_receiver_reg) { |
| 735 | __ Pop(this->name(), holder_reg, receiver()); |
| 736 | } else { |
| 737 | __ Pop(this->name(), holder_reg); |
| 738 | } |
| 739 | // Leave the internal frame. |
| 740 | } |
| 741 | |
| 742 | GenerateLoadPostInterceptor(it, holder_reg); |
| 743 | } |
| 744 | |
| 745 | |
| 746 | void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) { |
| 747 | // Call the runtime system to load the interceptor. |
| 748 | DCHECK(holder()->HasNamedInterceptor()); |
| 749 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 750 | PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(), |
| 751 | holder()); |
| 752 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 753 | __ TailCallRuntime(Runtime::kLoadPropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | |
| 757 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 758 | Handle<JSObject> object, Handle<Name> name, Handle<AccessorInfo> callback, |
| 759 | LanguageMode language_mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 760 | ASM_LOCATION("NamedStoreHandlerCompiler::CompileStoreCallback"); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 761 | Register holder_reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 762 | |
| 763 | // Stub never generated for non-global objects that require access checks. |
| 764 | DCHECK(holder()->IsJSGlobalProxy() || !holder()->IsAccessCheckNeeded()); |
| 765 | |
| 766 | // receiver() and holder_reg can alias. |
| 767 | DCHECK(!AreAliased(receiver(), scratch1(), scratch2(), value())); |
| 768 | DCHECK(!AreAliased(holder_reg, scratch1(), scratch2(), value())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 769 | // If the callback cannot leak, then push the callback directly, |
| 770 | // otherwise wrap it in a weak cell. |
| 771 | if (callback->data()->IsUndefined() || callback->data()->IsSmi()) { |
| 772 | __ Mov(scratch1(), Operand(callback)); |
| 773 | } else { |
| 774 | Handle<WeakCell> cell = isolate()->factory()->NewWeakCell(callback); |
| 775 | __ Mov(scratch1(), Operand(cell)); |
| 776 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 777 | __ Mov(scratch2(), Operand(name)); |
| 778 | __ Push(receiver(), holder_reg, scratch1(), scratch2(), value()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 779 | __ Push(Smi::FromInt(language_mode)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 780 | |
| 781 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 782 | __ TailCallRuntime(Runtime::kStoreCallbackProperty); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 783 | |
| 784 | // Return the generated code. |
| 785 | return GetCode(kind(), Code::FAST, name); |
| 786 | } |
| 787 | |
| 788 | |
| 789 | #undef __ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 790 | } // namespace internal |
| 791 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 792 | |
| 793 | #endif // V8_TARGET_ARCH_IA32 |