Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 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_X87 |
| 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 | |
| 17 | |
| 18 | void NamedLoadHandlerCompiler::GenerateLoadViaGetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 19 | MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder, |
| 20 | int accessor_index, int expected_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 21 | { |
| 22 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 23 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 24 | if (accessor_index >= 0) { |
| 25 | DCHECK(!holder.is(scratch)); |
| 26 | DCHECK(!receiver.is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 27 | // Call the JavaScript getter with the receiver on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 28 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 29 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 30 | __ mov(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 31 | FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 32 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 33 | } |
| 34 | __ push(receiver); |
| 35 | ParameterCount actual(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 36 | ParameterCount expected(expected_arguments); |
| 37 | __ LoadAccessor(edi, holder, accessor_index, ACCESSOR_GETTER); |
| 38 | __ InvokeFunction(edi, expected, actual, CALL_FUNCTION, |
| 39 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 40 | } else { |
| 41 | // If we generate a global code snippet for deoptimization only, remember |
| 42 | // the place to continue after deoptimization. |
| 43 | masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset()); |
| 44 | } |
| 45 | |
| 46 | // Restore context register. |
| 47 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 48 | } |
| 49 | __ ret(0); |
| 50 | } |
| 51 | |
| 52 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 53 | void PropertyHandlerCompiler::PushVectorAndSlot(Register vector, |
| 54 | Register slot) { |
| 55 | MacroAssembler* masm = this->masm(); |
| 56 | __ push(vector); |
| 57 | __ push(slot); |
| 58 | } |
| 59 | |
| 60 | |
| 61 | void PropertyHandlerCompiler::PopVectorAndSlot(Register vector, Register slot) { |
| 62 | MacroAssembler* masm = this->masm(); |
| 63 | __ pop(slot); |
| 64 | __ pop(vector); |
| 65 | } |
| 66 | |
| 67 | |
| 68 | void PropertyHandlerCompiler::DiscardVectorAndSlot() { |
| 69 | MacroAssembler* masm = this->masm(); |
| 70 | // Remove vector and slot. |
| 71 | __ add(esp, Immediate(2 * kPointerSize)); |
| 72 | } |
| 73 | |
| 74 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup( |
| 76 | MacroAssembler* masm, Label* miss_label, Register receiver, |
| 77 | Handle<Name> name, Register scratch0, Register scratch1) { |
| 78 | DCHECK(name->IsUniqueName()); |
| 79 | DCHECK(!receiver.is(scratch0)); |
| 80 | Counters* counters = masm->isolate()->counters(); |
| 81 | __ IncrementCounter(counters->negative_lookups(), 1); |
| 82 | __ IncrementCounter(counters->negative_lookups_miss(), 1); |
| 83 | |
| 84 | __ mov(scratch0, FieldOperand(receiver, HeapObject::kMapOffset)); |
| 85 | |
| 86 | const int kInterceptorOrAccessCheckNeededMask = |
| 87 | (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded); |
| 88 | |
| 89 | // Bail out if the receiver has a named interceptor or requires access checks. |
| 90 | __ test_b(FieldOperand(scratch0, Map::kBitFieldOffset), |
| 91 | kInterceptorOrAccessCheckNeededMask); |
| 92 | __ j(not_zero, miss_label); |
| 93 | |
| 94 | // Check that receiver is a JSObject. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 95 | __ CmpInstanceType(scratch0, FIRST_JS_RECEIVER_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 96 | __ j(below, miss_label); |
| 97 | |
| 98 | // Load properties array. |
| 99 | Register properties = scratch0; |
| 100 | __ mov(properties, FieldOperand(receiver, JSObject::kPropertiesOffset)); |
| 101 | |
| 102 | // Check that the properties array is a dictionary. |
| 103 | __ cmp(FieldOperand(properties, HeapObject::kMapOffset), |
| 104 | Immediate(masm->isolate()->factory()->hash_table_map())); |
| 105 | __ j(not_equal, miss_label); |
| 106 | |
| 107 | Label done; |
| 108 | NameDictionaryLookupStub::GenerateNegativeLookup(masm, miss_label, &done, |
| 109 | properties, name, scratch1); |
| 110 | __ bind(&done); |
| 111 | __ DecrementCounter(counters->negative_lookups_miss(), 1); |
| 112 | } |
| 113 | |
| 114 | |
| 115 | void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 116 | MacroAssembler* masm, int index, Register result, Label* miss) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 117 | __ LoadGlobalFunction(index, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 118 | // Load its initial map. The global functions all have initial maps. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 119 | __ mov(result, |
| 120 | FieldOperand(result, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 121 | // Load the prototype from the initial map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 122 | __ mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | |
| 126 | void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype( |
| 127 | MacroAssembler* masm, Register receiver, Register scratch1, |
| 128 | Register scratch2, Label* miss_label) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 129 | // TODO(mvstanton): This isn't used on ia32. Move all the other |
| 130 | // platform implementations into a code stub so this method can be removed. |
| 131 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | |
| 135 | // Generate call to api function. |
| 136 | // This function uses push() to generate smaller, faster code than |
| 137 | // the version above. It is an optimization that should will be removed |
| 138 | // when api call ICs are generated in hydrogen. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 139 | void PropertyHandlerCompiler::GenerateApiAccessorCall( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 140 | MacroAssembler* masm, const CallOptimization& optimization, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 141 | Handle<Map> receiver_map, Register receiver, Register scratch, |
| 142 | bool is_store, Register store_parameter, Register accessor_holder, |
| 143 | int accessor_index) { |
| 144 | DCHECK(!accessor_holder.is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 145 | // Copy return value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 146 | __ pop(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | // receiver |
| 148 | __ push(receiver); |
| 149 | // Write the arguments to stack frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 150 | if (is_store) { |
| 151 | DCHECK(!receiver.is(store_parameter)); |
| 152 | DCHECK(!scratch.is(store_parameter)); |
| 153 | __ push(store_parameter); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 154 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 155 | __ push(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 156 | // Stack now matches JSFunction abi. |
| 157 | DCHECK(optimization.is_simple_api_call()); |
| 158 | |
| 159 | // Abi for CallApiFunctionStub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 160 | Register callee = edi; |
| 161 | Register data = ebx; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 162 | Register holder = ecx; |
| 163 | Register api_function_address = edx; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 164 | scratch = no_reg; |
| 165 | |
| 166 | // Put callee in place. |
| 167 | __ LoadAccessor(callee, accessor_holder, accessor_index, |
| 168 | is_store ? ACCESSOR_SETTER : ACCESSOR_GETTER); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 169 | |
| 170 | // Put holder in place. |
| 171 | CallOptimization::HolderLookup holder_lookup; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 172 | int holder_depth = 0; |
| 173 | optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup, |
| 174 | &holder_depth); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 175 | switch (holder_lookup) { |
| 176 | case CallOptimization::kHolderIsReceiver: |
| 177 | __ Move(holder, receiver); |
| 178 | break; |
| 179 | case CallOptimization::kHolderFound: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 180 | __ mov(holder, FieldOperand(receiver, HeapObject::kMapOffset)); |
| 181 | __ mov(holder, FieldOperand(holder, Map::kPrototypeOffset)); |
| 182 | for (int i = 1; i < holder_depth; i++) { |
| 183 | __ mov(holder, FieldOperand(holder, HeapObject::kMapOffset)); |
| 184 | __ mov(holder, FieldOperand(holder, Map::kPrototypeOffset)); |
| 185 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 186 | break; |
| 187 | case CallOptimization::kHolderNotFound: |
| 188 | UNREACHABLE(); |
| 189 | break; |
| 190 | } |
| 191 | |
| 192 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 193 | Handle<CallHandlerInfo> api_call_info = optimization.api_call_info(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 194 | bool call_data_undefined = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 195 | // Put call data in place. |
| 196 | if (api_call_info->data()->IsUndefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 197 | call_data_undefined = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 198 | __ mov(data, Immediate(isolate->factory()->undefined_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 199 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 200 | __ mov(data, FieldOperand(callee, JSFunction::kSharedFunctionInfoOffset)); |
| 201 | __ mov(data, FieldOperand(data, SharedFunctionInfo::kFunctionDataOffset)); |
| 202 | __ mov(data, FieldOperand(data, FunctionTemplateInfo::kCallCodeOffset)); |
| 203 | __ mov(data, FieldOperand(data, CallHandlerInfo::kDataOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 204 | } |
| 205 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 206 | if (api_call_info->fast_handler()->IsCode()) { |
| 207 | // Just tail call into the code. |
| 208 | __ Jump(handle(Code::cast(api_call_info->fast_handler())), |
| 209 | RelocInfo::CODE_TARGET); |
| 210 | return; |
| 211 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 212 | // Put api_function_address in place. |
| 213 | Address function_address = v8::ToCData<Address>(api_call_info->callback()); |
| 214 | __ mov(api_function_address, Immediate(function_address)); |
| 215 | |
| 216 | // Jump to stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 217 | CallApiAccessorStub stub(isolate, is_store, call_data_undefined); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | __ TailCallStub(&stub); |
| 219 | } |
| 220 | |
| 221 | |
| 222 | // Generate code to check that a global property cell is empty. Create |
| 223 | // the property cell at compilation time if no cell exists for the |
| 224 | // property. |
| 225 | void PropertyHandlerCompiler::GenerateCheckPropertyCell( |
| 226 | MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name, |
| 227 | Register scratch, Label* miss) { |
| 228 | Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name); |
| 229 | DCHECK(cell->value()->IsTheHole()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 230 | Factory* factory = masm->isolate()->factory(); |
| 231 | Handle<WeakCell> weak_cell = factory->NewWeakCell(cell); |
| 232 | __ LoadWeakValue(scratch, weak_cell, miss); |
| 233 | __ cmp(FieldOperand(scratch, PropertyCell::kValueOffset), |
| 234 | Immediate(factory->the_hole_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 235 | __ j(not_equal, miss); |
| 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 | // -- esp[0] : return address |
| 244 | // ----------------------------------- |
| 245 | { |
| 246 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 247 | |
| 248 | // Save value register, so we can restore it later. |
| 249 | __ push(value()); |
| 250 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 251 | if (accessor_index >= 0) { |
| 252 | DCHECK(!holder.is(scratch)); |
| 253 | DCHECK(!receiver.is(scratch)); |
| 254 | DCHECK(!value().is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 255 | // Call the JavaScript setter with receiver and value on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 256 | if (map->IsJSGlobalObjectMap()) { |
| 257 | __ mov(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 258 | FieldOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 259 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 260 | } |
| 261 | __ push(receiver); |
| 262 | __ push(value()); |
| 263 | ParameterCount actual(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 264 | ParameterCount expected(expected_arguments); |
| 265 | __ LoadAccessor(edi, holder, accessor_index, ACCESSOR_SETTER); |
| 266 | __ InvokeFunction(edi, expected, actual, CALL_FUNCTION, |
| 267 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 268 | } else { |
| 269 | // If we generate a global code snippet for deoptimization only, remember |
| 270 | // the place to continue after deoptimization. |
| 271 | masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset()); |
| 272 | } |
| 273 | |
| 274 | // We have to return the passed value, not the return value of the setter. |
| 275 | __ pop(eax); |
| 276 | |
| 277 | // Restore context register. |
| 278 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 279 | } |
| 280 | __ ret(0); |
| 281 | } |
| 282 | |
| 283 | |
| 284 | static void PushInterceptorArguments(MacroAssembler* masm, Register receiver, |
| 285 | Register holder, Register name, |
| 286 | Handle<JSObject> holder_obj) { |
| 287 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 288 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex == 1); |
| 289 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex == 2); |
| 290 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsLength == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 291 | __ push(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 292 | __ push(receiver); |
| 293 | __ push(holder); |
| 294 | } |
| 295 | |
| 296 | |
| 297 | static void CompileCallLoadPropertyWithInterceptor( |
| 298 | MacroAssembler* masm, Register receiver, Register holder, Register name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 299 | Handle<JSObject> holder_obj, Runtime::FunctionId id) { |
| 300 | DCHECK(NamedLoadHandlerCompiler::kInterceptorArgsLength == |
| 301 | Runtime::FunctionForId(id)->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | PushInterceptorArguments(masm, receiver, holder, name, holder_obj); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 303 | __ CallRuntime(id); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | |
| 307 | static void StoreIC_PushArgs(MacroAssembler* masm) { |
| 308 | Register receiver = StoreDescriptor::ReceiverRegister(); |
| 309 | Register name = StoreDescriptor::NameRegister(); |
| 310 | Register value = StoreDescriptor::ValueRegister(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 311 | Register slot = VectorStoreICDescriptor::SlotRegister(); |
| 312 | Register vector = VectorStoreICDescriptor::VectorRegister(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 313 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 314 | __ xchg(receiver, Operand(esp, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 315 | __ push(name); |
| 316 | __ push(value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 317 | __ push(slot); |
| 318 | __ push(vector); |
| 319 | __ push(receiver); // which contains the return address. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | |
| 323 | void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) { |
| 324 | // Return address is on the stack. |
| 325 | StoreIC_PushArgs(masm); |
| 326 | |
| 327 | // Do tail-call to runtime routine. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 328 | __ TailCallRuntime(Runtime::kStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | } |
| 330 | |
| 331 | |
| 332 | void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) { |
| 333 | // Return address is on the stack. |
| 334 | StoreIC_PushArgs(masm); |
| 335 | |
| 336 | // Do tail-call to runtime routine. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 337 | __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | |
| 341 | #undef __ |
| 342 | #define __ ACCESS_MASM(masm()) |
| 343 | |
| 344 | |
| 345 | void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label, |
| 346 | Handle<Name> name) { |
| 347 | if (!label->is_unused()) { |
| 348 | __ bind(label); |
| 349 | __ mov(this->name(), Immediate(name)); |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 354 | void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) { |
| 355 | __ mov(this->name(), Immediate(name)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 359 | void NamedStoreHandlerCompiler::RearrangeVectorAndSlot( |
| 360 | Register current_map, Register destination_map) { |
| 361 | DCHECK(destination_map.is(StoreTransitionHelper::MapRegister())); |
| 362 | DCHECK(current_map.is(StoreTransitionHelper::VectorRegister())); |
| 363 | ExternalReference virtual_slot = |
| 364 | ExternalReference::virtual_slot_register(isolate()); |
| 365 | __ mov(destination_map, current_map); |
| 366 | __ pop(current_map); |
| 367 | __ mov(Operand::StaticVariable(virtual_slot), current_map); |
| 368 | __ pop(current_map); // put vector in place. |
| 369 | } |
| 370 | |
| 371 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 372 | void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 373 | Register map_reg, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 374 | Register scratch, |
| 375 | Label* miss) { |
| 376 | Handle<WeakCell> cell = Map::WeakCellForMap(transition); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 377 | DCHECK(!map_reg.is(scratch)); |
| 378 | __ LoadWeakValue(map_reg, cell, miss); |
| 379 | if (transition->CanBeDeprecated()) { |
| 380 | __ mov(scratch, FieldOperand(map_reg, Map::kBitField3Offset)); |
| 381 | __ and_(scratch, Immediate(Map::Deprecated::kMask)); |
| 382 | __ j(not_zero, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 383 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 384 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 385 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 386 | |
| 387 | void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg, |
| 388 | int descriptor, |
| 389 | Register value_reg, |
| 390 | Register scratch, |
| 391 | Label* miss_label) { |
| 392 | DCHECK(!map_reg.is(scratch)); |
| 393 | DCHECK(!map_reg.is(value_reg)); |
| 394 | DCHECK(!value_reg.is(scratch)); |
| 395 | __ LoadInstanceDescriptors(map_reg, scratch); |
| 396 | __ mov(scratch, |
| 397 | FieldOperand(scratch, DescriptorArray::GetValueOffset(descriptor))); |
| 398 | __ cmp(value_reg, scratch); |
| 399 | __ j(not_equal, miss_label); |
| 400 | } |
| 401 | |
| 402 | |
| 403 | void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type, |
| 404 | Register value_reg, |
| 405 | Label* miss_label) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 406 | Register map_reg = scratch1(); |
| 407 | Register scratch = scratch2(); |
| 408 | DCHECK(!value_reg.is(map_reg)); |
| 409 | DCHECK(!value_reg.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 410 | __ JumpIfSmi(value_reg, miss_label); |
| 411 | HeapType::Iterator<Map> it = field_type->Classes(); |
| 412 | if (!it.Done()) { |
| 413 | Label do_store; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 414 | __ mov(map_reg, FieldOperand(value_reg, HeapObject::kMapOffset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 415 | while (true) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 416 | __ CmpWeakValue(map_reg, Map::WeakCellForMap(it.Current()), scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 417 | it.Advance(); |
| 418 | if (it.Done()) { |
| 419 | __ j(not_equal, miss_label); |
| 420 | break; |
| 421 | } |
| 422 | __ j(equal, &do_store, Label::kNear); |
| 423 | } |
| 424 | __ bind(&do_store); |
| 425 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 426 | } |
| 427 | |
| 428 | |
| 429 | Register PropertyHandlerCompiler::CheckPrototypes( |
| 430 | Register object_reg, Register holder_reg, Register scratch1, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 431 | Register scratch2, Handle<Name> name, Label* miss, PrototypeCheckType check, |
| 432 | ReturnHolder return_what) { |
| 433 | Handle<Map> receiver_map = map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 434 | |
| 435 | // Make sure there's no overlap between holder and object registers. |
| 436 | DCHECK(!scratch1.is(object_reg) && !scratch1.is(holder_reg)); |
| 437 | DCHECK(!scratch2.is(object_reg) && !scratch2.is(holder_reg) && |
| 438 | !scratch2.is(scratch1)); |
| 439 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 440 | if (FLAG_eliminate_prototype_chain_checks) { |
| 441 | Handle<Cell> validity_cell = |
| 442 | Map::GetOrCreatePrototypeChainValidityCell(receiver_map, isolate()); |
| 443 | if (!validity_cell.is_null()) { |
| 444 | DCHECK_EQ(Smi::FromInt(Map::kPrototypeChainValid), |
| 445 | validity_cell->value()); |
| 446 | // Operand::ForCell(...) points to the cell's payload! |
| 447 | __ cmp(Operand::ForCell(validity_cell), |
| 448 | Immediate(Smi::FromInt(Map::kPrototypeChainValid))); |
| 449 | __ j(not_equal, miss); |
| 450 | } |
| 451 | |
| 452 | // The prototype chain of primitives (and their JSValue wrappers) depends |
| 453 | // on the native context, which can't be guarded by validity cells. |
| 454 | // |object_reg| holds the native context specific prototype in this case; |
| 455 | // we need to check its map. |
| 456 | if (check == CHECK_ALL_MAPS) { |
| 457 | __ mov(scratch1, FieldOperand(object_reg, HeapObject::kMapOffset)); |
| 458 | Handle<WeakCell> cell = Map::WeakCellForMap(receiver_map); |
| 459 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 460 | __ j(not_equal, miss); |
| 461 | } |
| 462 | } |
| 463 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 464 | // Keep track of the current object in register reg. |
| 465 | Register reg = object_reg; |
| 466 | int depth = 0; |
| 467 | |
| 468 | Handle<JSObject> current = Handle<JSObject>::null(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 469 | if (receiver_map->IsJSGlobalObjectMap()) { |
| 470 | current = isolate()->global_object(); |
| 471 | } |
| 472 | |
| 473 | // Check access rights to the global object. This has to happen after |
| 474 | // the map check so that we know that the object is actually a global |
| 475 | // object. |
| 476 | // This allows us to install generated handlers for accesses to the |
| 477 | // global proxy (as opposed to using slow ICs). See corresponding code |
| 478 | // in LookupForRead(). |
| 479 | if (receiver_map->IsJSGlobalProxyMap()) { |
| 480 | __ CheckAccessGlobalProxy(reg, scratch1, scratch2, miss); |
| 481 | } |
| 482 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 483 | Handle<JSObject> prototype = Handle<JSObject>::null(); |
| 484 | Handle<Map> current_map = receiver_map; |
| 485 | Handle<Map> holder_map(holder()->map()); |
| 486 | // Traverse the prototype chain and check the maps in the prototype chain for |
| 487 | // fast and global objects or do negative lookup for normal objects. |
| 488 | while (!current_map.is_identical_to(holder_map)) { |
| 489 | ++depth; |
| 490 | |
| 491 | // Only global objects and objects that do not require access |
| 492 | // checks are allowed in stubs. |
| 493 | DCHECK(current_map->IsJSGlobalProxyMap() || |
| 494 | !current_map->is_access_check_needed()); |
| 495 | |
| 496 | prototype = handle(JSObject::cast(current_map->prototype())); |
| 497 | if (current_map->is_dictionary_map() && |
| 498 | !current_map->IsJSGlobalObjectMap()) { |
| 499 | DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast. |
| 500 | if (!name->IsUniqueName()) { |
| 501 | DCHECK(name->IsString()); |
| 502 | name = factory()->InternalizeString(Handle<String>::cast(name)); |
| 503 | } |
| 504 | DCHECK(current.is_null() || |
| 505 | current->property_dictionary()->FindEntry(name) == |
| 506 | NameDictionary::kNotFound); |
| 507 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 508 | if (FLAG_eliminate_prototype_chain_checks && depth > 1) { |
| 509 | // TODO(jkummerow): Cache and re-use weak cell. |
| 510 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
| 511 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 512 | GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1, |
| 513 | scratch2); |
| 514 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 515 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 516 | __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| 517 | __ mov(holder_reg, FieldOperand(scratch1, Map::kPrototypeOffset)); |
| 518 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 519 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 520 | Register map_reg = scratch1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 521 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 522 | __ mov(map_reg, FieldOperand(reg, HeapObject::kMapOffset)); |
| 523 | } |
| 524 | if (current_map->IsJSGlobalObjectMap()) { |
| 525 | GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current), |
| 526 | name, scratch2, miss); |
| 527 | } else if (!FLAG_eliminate_prototype_chain_checks && |
| 528 | (depth != 1 || check == CHECK_ALL_MAPS)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 529 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 530 | __ CmpWeakValue(map_reg, cell, scratch2); |
| 531 | __ j(not_equal, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 532 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 533 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 534 | __ mov(holder_reg, FieldOperand(map_reg, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 535 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 536 | } |
| 537 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 538 | 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] | 539 | // Go to the next object in the prototype chain. |
| 540 | current = prototype; |
| 541 | current_map = handle(current->map()); |
| 542 | } |
| 543 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 544 | DCHECK(!current_map->IsJSGlobalProxyMap()); |
| 545 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 546 | // Log the check depth. |
| 547 | LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); |
| 548 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 549 | if (!FLAG_eliminate_prototype_chain_checks && |
| 550 | (depth != 0 || check == CHECK_ALL_MAPS)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 551 | // Check the holder map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 552 | __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); |
| 553 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 554 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 555 | __ j(not_equal, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 556 | } |
| 557 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 558 | bool return_holder = return_what == RETURN_HOLDER; |
| 559 | if (FLAG_eliminate_prototype_chain_checks && return_holder && depth != 0) { |
| 560 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | // Return the register containing the holder. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 564 | return return_holder ? reg : no_reg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 565 | } |
| 566 | |
| 567 | |
| 568 | void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 569 | if (!miss->is_unused()) { |
| 570 | Label success; |
| 571 | __ jmp(&success); |
| 572 | __ bind(miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 573 | if (IC::ICUseVector(kind())) { |
| 574 | DCHECK(kind() == Code::LOAD_IC); |
| 575 | PopVectorAndSlot(); |
| 576 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 577 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 578 | __ bind(&success); |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | |
| 583 | void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 584 | if (!miss->is_unused()) { |
| 585 | Label success; |
| 586 | __ jmp(&success); |
| 587 | GenerateRestoreName(miss, name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 588 | if (IC::ICUseVector(kind())) PopVectorAndSlot(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 589 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 590 | __ bind(&success); |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | |
| 595 | void NamedLoadHandlerCompiler::GenerateLoadCallback( |
| 596 | Register reg, Handle<ExecutableAccessorInfo> callback) { |
| 597 | // Insert additional parameters into the stack frame above return address. |
| 598 | DCHECK(!scratch3().is(reg)); |
| 599 | __ pop(scratch3()); // Get return address to place it below. |
| 600 | |
| 601 | STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0); |
| 602 | STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1); |
| 603 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2); |
| 604 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3); |
| 605 | STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4); |
| 606 | STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5); |
| 607 | __ push(receiver()); // receiver |
| 608 | // Push data from ExecutableAccessorInfo. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 609 | Handle<Object> data(callback->data(), isolate()); |
| 610 | if (data->IsUndefined() || data->IsSmi()) { |
| 611 | __ push(Immediate(data)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 612 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 613 | DCHECK(!scratch2().is(reg)); |
| 614 | Handle<WeakCell> cell = |
| 615 | isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data)); |
| 616 | // The callback is alive if this instruction is executed, |
| 617 | // so the weak cell is not cleared and points to data. |
| 618 | __ GetWeakValue(scratch2(), cell); |
| 619 | __ push(scratch2()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 620 | } |
| 621 | __ push(Immediate(isolate()->factory()->undefined_value())); // ReturnValue |
| 622 | // ReturnValue default value |
| 623 | __ push(Immediate(isolate()->factory()->undefined_value())); |
| 624 | __ push(Immediate(reinterpret_cast<int>(isolate()))); |
| 625 | __ push(reg); // holder |
| 626 | |
| 627 | // Save a pointer to where we pushed the arguments. This will be |
| 628 | // passed as the const PropertyAccessorInfo& to the C++ callback. |
| 629 | __ push(esp); |
| 630 | |
| 631 | __ push(name()); // name |
| 632 | |
| 633 | __ push(scratch3()); // Restore return address. |
| 634 | |
| 635 | // Abi for CallApiGetter |
| 636 | Register getter_address = ApiGetterDescriptor::function_address(); |
| 637 | Address function_address = v8::ToCData<Address>(callback->getter()); |
| 638 | __ mov(getter_address, Immediate(function_address)); |
| 639 | |
| 640 | CallApiGetterStub stub(isolate()); |
| 641 | __ TailCallStub(&stub); |
| 642 | } |
| 643 | |
| 644 | |
| 645 | void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) { |
| 646 | // Return the constant value. |
| 647 | __ LoadObject(eax, value); |
| 648 | __ ret(0); |
| 649 | } |
| 650 | |
| 651 | |
| 652 | void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup( |
| 653 | LookupIterator* it, Register holder_reg) { |
| 654 | DCHECK(holder()->HasNamedInterceptor()); |
| 655 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 656 | |
| 657 | // Compile the interceptor call, followed by inline code to load the |
| 658 | // property from further up the prototype chain if the call fails. |
| 659 | // Check that the maps haven't changed. |
| 660 | DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1())); |
| 661 | |
| 662 | // Preserve the receiver register explicitly whenever it is different from the |
| 663 | // holder and it is needed should the interceptor return without any result. |
| 664 | // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD |
| 665 | // case might cause a miss during the prototype check. |
| 666 | bool must_perform_prototype_check = |
| 667 | !holder().is_identical_to(it->GetHolder<JSObject>()); |
| 668 | bool must_preserve_receiver_reg = |
| 669 | !receiver().is(holder_reg) && |
| 670 | (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check); |
| 671 | |
| 672 | // Save necessary data before invoking an interceptor. |
| 673 | // Requires a frame to make GC aware of pushed pointers. |
| 674 | { |
| 675 | FrameScope frame_scope(masm(), StackFrame::INTERNAL); |
| 676 | |
| 677 | if (must_preserve_receiver_reg) { |
| 678 | __ push(receiver()); |
| 679 | } |
| 680 | __ push(holder_reg); |
| 681 | __ push(this->name()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 682 | InterceptorVectorSlotPush(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 683 | // Invoke an interceptor. Note: map checks from receiver to |
| 684 | // interceptor's holder has been compiled before (see a caller |
| 685 | // of this method.) |
| 686 | CompileCallLoadPropertyWithInterceptor( |
| 687 | masm(), receiver(), holder_reg, this->name(), holder(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 688 | Runtime::kLoadPropertyWithInterceptorOnly); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 689 | |
| 690 | // Check if interceptor provided a value for property. If it's |
| 691 | // the case, return immediately. |
| 692 | Label interceptor_failed; |
| 693 | __ cmp(eax, factory()->no_interceptor_result_sentinel()); |
| 694 | __ j(equal, &interceptor_failed); |
| 695 | frame_scope.GenerateLeaveFrame(); |
| 696 | __ ret(0); |
| 697 | |
| 698 | // Clobber registers when generating debug-code to provoke errors. |
| 699 | __ bind(&interceptor_failed); |
| 700 | if (FLAG_debug_code) { |
| 701 | __ mov(receiver(), Immediate(bit_cast<int32_t>(kZapValue))); |
| 702 | __ mov(holder_reg, Immediate(bit_cast<int32_t>(kZapValue))); |
| 703 | __ mov(this->name(), Immediate(bit_cast<int32_t>(kZapValue))); |
| 704 | } |
| 705 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 706 | InterceptorVectorSlotPop(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 707 | __ pop(this->name()); |
| 708 | __ pop(holder_reg); |
| 709 | if (must_preserve_receiver_reg) { |
| 710 | __ pop(receiver()); |
| 711 | } |
| 712 | |
| 713 | // Leave the internal frame. |
| 714 | } |
| 715 | |
| 716 | GenerateLoadPostInterceptor(it, holder_reg); |
| 717 | } |
| 718 | |
| 719 | |
| 720 | void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) { |
| 721 | DCHECK(holder()->HasNamedInterceptor()); |
| 722 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 723 | // Call the runtime system to load the interceptor. |
| 724 | __ pop(scratch2()); // save old return address |
| 725 | PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(), |
| 726 | holder()); |
| 727 | __ push(scratch2()); // restore old return address |
| 728 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 729 | __ TailCallRuntime(Runtime::kLoadPropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | |
| 733 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback( |
| 734 | Handle<JSObject> object, Handle<Name> name, |
| 735 | Handle<ExecutableAccessorInfo> callback) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 736 | Register holder_reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 737 | |
| 738 | __ pop(scratch1()); // remove the return address |
| 739 | __ push(receiver()); |
| 740 | __ push(holder_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 741 | // If the callback cannot leak, then push the callback directly, |
| 742 | // otherwise wrap it in a weak cell. |
| 743 | if (callback->data()->IsUndefined() || callback->data()->IsSmi()) { |
| 744 | __ Push(callback); |
| 745 | } else { |
| 746 | Handle<WeakCell> cell = isolate()->factory()->NewWeakCell(callback); |
| 747 | __ Push(cell); |
| 748 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 749 | __ Push(name); |
| 750 | __ push(value()); |
| 751 | __ push(scratch1()); // restore return address |
| 752 | |
| 753 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 754 | __ TailCallRuntime(Runtime::kStoreCallbackProperty); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 755 | |
| 756 | // Return the generated code. |
| 757 | return GetCode(kind(), Code::FAST, name); |
| 758 | } |
| 759 | |
| 760 | |
| 761 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor( |
| 762 | Handle<Name> name) { |
| 763 | __ pop(scratch1()); // remove the return address |
| 764 | __ push(receiver()); |
| 765 | __ push(this->name()); |
| 766 | __ push(value()); |
| 767 | __ push(scratch1()); // restore return address |
| 768 | |
| 769 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 770 | __ TailCallRuntime(Runtime::kStorePropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 771 | |
| 772 | // Return the generated code. |
| 773 | return GetCode(kind(), Code::FAST, name); |
| 774 | } |
| 775 | |
| 776 | |
| 777 | Register NamedStoreHandlerCompiler::value() { |
| 778 | return StoreDescriptor::ValueRegister(); |
| 779 | } |
| 780 | |
| 781 | |
| 782 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal( |
| 783 | Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) { |
| 784 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 785 | if (IC::ICUseVector(kind())) { |
| 786 | PushVectorAndSlot(); |
| 787 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 788 | FrontendHeader(receiver(), name, &miss, DONT_RETURN_ANYTHING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 789 | // Get the value from the cell. |
| 790 | Register result = StoreDescriptor::ValueRegister(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 791 | Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell); |
| 792 | __ LoadWeakValue(result, weak_cell, &miss); |
| 793 | __ mov(result, FieldOperand(result, PropertyCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 794 | |
| 795 | // Check for deleted property if property can actually be deleted. |
| 796 | if (is_configurable) { |
| 797 | __ cmp(result, factory()->the_hole_value()); |
| 798 | __ j(equal, &miss); |
| 799 | } else if (FLAG_debug_code) { |
| 800 | __ cmp(result, factory()->the_hole_value()); |
| 801 | __ Check(not_equal, kDontDeleteCellsCannotContainTheHole); |
| 802 | } |
| 803 | |
| 804 | Counters* counters = isolate()->counters(); |
| 805 | __ IncrementCounter(counters->named_load_global_stub(), 1); |
| 806 | // The code above already loads the result into the return register. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 807 | if (IC::ICUseVector(kind())) { |
| 808 | DiscardVectorAndSlot(); |
| 809 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 810 | __ ret(0); |
| 811 | |
| 812 | FrontendFooter(name, &miss); |
| 813 | |
| 814 | // Return the generated code. |
| 815 | return GetCode(kind(), Code::NORMAL, name); |
| 816 | } |
| 817 | |
| 818 | |
| 819 | #undef __ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 820 | } // namespace internal |
| 821 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 822 | |
| 823 | #endif // V8_TARGET_ARCH_X87 |