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_ARM |
| 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 | // ----------- S t a t e ------------- |
| 22 | // -- r0 : receiver |
| 23 | // -- r2 : name |
| 24 | // -- lr : return address |
| 25 | // ----------------------------------- |
| 26 | { |
| 27 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 28 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 29 | if (accessor_index >= 0) { |
| 30 | DCHECK(!holder.is(scratch)); |
| 31 | DCHECK(!receiver.is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 32 | // Call the JavaScript getter with the receiver on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 33 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 34 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 35 | __ ldr(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 36 | FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 37 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 38 | } |
| 39 | __ push(receiver); |
| 40 | ParameterCount actual(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 41 | ParameterCount expected(expected_arguments); |
| 42 | __ LoadAccessor(r1, holder, accessor_index, ACCESSOR_GETTER); |
| 43 | __ InvokeFunction(r1, expected, actual, CALL_FUNCTION, |
| 44 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 45 | } else { |
| 46 | // If we generate a global code snippet for deoptimization only, remember |
| 47 | // the place to continue after deoptimization. |
| 48 | masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset()); |
| 49 | } |
| 50 | |
| 51 | // Restore context register. |
| 52 | __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 53 | } |
| 54 | __ Ret(); |
| 55 | } |
| 56 | |
| 57 | |
| 58 | void NamedStoreHandlerCompiler::GenerateStoreViaSetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 59 | MacroAssembler* masm, Handle<Map> map, Register receiver, Register holder, |
| 60 | int accessor_index, int expected_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 61 | // ----------- S t a t e ------------- |
| 62 | // -- lr : return address |
| 63 | // ----------------------------------- |
| 64 | { |
| 65 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 66 | |
| 67 | // Save value register, so we can restore it later. |
| 68 | __ push(value()); |
| 69 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 70 | if (accessor_index >= 0) { |
| 71 | DCHECK(!holder.is(scratch)); |
| 72 | DCHECK(!receiver.is(scratch)); |
| 73 | DCHECK(!value().is(scratch)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 74 | // Call the JavaScript setter with receiver and value on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 75 | if (map->IsJSGlobalObjectMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 76 | // Swap in the global receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 77 | __ ldr(scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 78 | FieldMemOperand(receiver, JSGlobalObject::kGlobalProxyOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 79 | receiver = scratch; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 80 | } |
| 81 | __ Push(receiver, value()); |
| 82 | ParameterCount actual(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 83 | ParameterCount expected(expected_arguments); |
| 84 | __ LoadAccessor(r1, holder, accessor_index, ACCESSOR_SETTER); |
| 85 | __ InvokeFunction(r1, expected, actual, CALL_FUNCTION, |
| 86 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 87 | } else { |
| 88 | // If we generate a global code snippet for deoptimization only, remember |
| 89 | // the place to continue after deoptimization. |
| 90 | masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset()); |
| 91 | } |
| 92 | |
| 93 | // We have to return the passed value, not the return value of the setter. |
| 94 | __ pop(r0); |
| 95 | |
| 96 | // Restore context register. |
| 97 | __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 98 | } |
| 99 | __ Ret(); |
| 100 | } |
| 101 | |
| 102 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 103 | void PropertyHandlerCompiler::PushVectorAndSlot(Register vector, |
| 104 | Register slot) { |
| 105 | MacroAssembler* masm = this->masm(); |
| 106 | __ push(vector); |
| 107 | __ push(slot); |
| 108 | } |
| 109 | |
| 110 | |
| 111 | void PropertyHandlerCompiler::PopVectorAndSlot(Register vector, Register slot) { |
| 112 | MacroAssembler* masm = this->masm(); |
| 113 | __ pop(slot); |
| 114 | __ pop(vector); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | void PropertyHandlerCompiler::DiscardVectorAndSlot() { |
| 119 | MacroAssembler* masm = this->masm(); |
| 120 | // Remove vector and slot. |
| 121 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 122 | } |
| 123 | |
| 124 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 125 | void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup( |
| 126 | MacroAssembler* masm, Label* miss_label, Register receiver, |
| 127 | Handle<Name> name, Register scratch0, Register scratch1) { |
| 128 | DCHECK(name->IsUniqueName()); |
| 129 | DCHECK(!receiver.is(scratch0)); |
| 130 | Counters* counters = masm->isolate()->counters(); |
| 131 | __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1); |
| 132 | __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1); |
| 133 | |
| 134 | Label done; |
| 135 | |
| 136 | const int kInterceptorOrAccessCheckNeededMask = |
| 137 | (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded); |
| 138 | |
| 139 | // Bail out if the receiver has a named interceptor or requires access checks. |
| 140 | Register map = scratch1; |
| 141 | __ ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 142 | __ ldrb(scratch0, FieldMemOperand(map, Map::kBitFieldOffset)); |
| 143 | __ tst(scratch0, Operand(kInterceptorOrAccessCheckNeededMask)); |
| 144 | __ b(ne, miss_label); |
| 145 | |
| 146 | // Check that receiver is a JSObject. |
| 147 | __ ldrb(scratch0, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 148 | __ cmp(scratch0, Operand(FIRST_JS_RECEIVER_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 149 | __ b(lt, miss_label); |
| 150 | |
| 151 | // Load properties array. |
| 152 | Register properties = scratch0; |
| 153 | __ ldr(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
| 154 | // Check that the properties array is a dictionary. |
| 155 | __ ldr(map, FieldMemOperand(properties, HeapObject::kMapOffset)); |
| 156 | Register tmp = properties; |
| 157 | __ LoadRoot(tmp, Heap::kHashTableMapRootIndex); |
| 158 | __ cmp(map, tmp); |
| 159 | __ b(ne, miss_label); |
| 160 | |
| 161 | // Restore the temporarily used register. |
| 162 | __ ldr(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
| 163 | |
| 164 | |
| 165 | NameDictionaryLookupStub::GenerateNegativeLookup( |
| 166 | masm, miss_label, &done, receiver, properties, name, scratch1); |
| 167 | __ bind(&done); |
| 168 | __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1); |
| 169 | } |
| 170 | |
| 171 | |
| 172 | void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 173 | MacroAssembler* masm, int index, Register result, Label* miss) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 174 | __ LoadNativeContextSlot(index, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 175 | // Load its initial map. The global functions all have initial maps. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 176 | __ ldr(result, |
| 177 | FieldMemOperand(result, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 178 | // Load the prototype from the initial map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 179 | __ ldr(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | |
| 183 | void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype( |
| 184 | MacroAssembler* masm, Register receiver, Register scratch1, |
| 185 | Register scratch2, Label* miss_label) { |
| 186 | __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label); |
| 187 | __ mov(r0, scratch1); |
| 188 | __ Ret(); |
| 189 | } |
| 190 | |
| 191 | |
| 192 | // Generate code to check that a global property cell is empty. Create |
| 193 | // the property cell at compilation time if no cell exists for the |
| 194 | // property. |
| 195 | void PropertyHandlerCompiler::GenerateCheckPropertyCell( |
| 196 | MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name, |
| 197 | Register scratch, Label* miss) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 198 | Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 199 | DCHECK(cell->value()->IsTheHole()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 200 | Handle<WeakCell> weak_cell = masm->isolate()->factory()->NewWeakCell(cell); |
| 201 | __ LoadWeakValue(scratch, weak_cell, miss); |
| 202 | __ ldr(scratch, FieldMemOperand(scratch, PropertyCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 203 | __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); |
| 204 | __ cmp(scratch, ip); |
| 205 | __ b(ne, miss); |
| 206 | } |
| 207 | |
| 208 | |
| 209 | static void PushInterceptorArguments(MacroAssembler* masm, Register receiver, |
| 210 | Register holder, Register name, |
| 211 | Handle<JSObject> holder_obj) { |
| 212 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 213 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex == 1); |
| 214 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex == 2); |
| 215 | STATIC_ASSERT(NamedLoadHandlerCompiler::kInterceptorArgsLength == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 216 | __ push(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 217 | __ push(receiver); |
| 218 | __ push(holder); |
| 219 | } |
| 220 | |
| 221 | |
| 222 | static void CompileCallLoadPropertyWithInterceptor( |
| 223 | MacroAssembler* masm, Register receiver, Register holder, Register name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 224 | Handle<JSObject> holder_obj, Runtime::FunctionId id) { |
| 225 | DCHECK(NamedLoadHandlerCompiler::kInterceptorArgsLength == |
| 226 | Runtime::FunctionForId(id)->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 227 | PushInterceptorArguments(masm, receiver, holder, name, holder_obj); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 228 | __ CallRuntime(id); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | |
| 232 | // Generate call to api function. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 233 | void PropertyHandlerCompiler::GenerateApiAccessorCall( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 234 | MacroAssembler* masm, const CallOptimization& optimization, |
| 235 | Handle<Map> receiver_map, Register receiver, Register scratch_in, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 236 | bool is_store, Register store_parameter, Register accessor_holder, |
| 237 | int accessor_index) { |
| 238 | DCHECK(!accessor_holder.is(scratch_in)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 239 | DCHECK(!receiver.is(scratch_in)); |
| 240 | __ push(receiver); |
| 241 | // Write the arguments to stack frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 242 | if (is_store) { |
| 243 | DCHECK(!receiver.is(store_parameter)); |
| 244 | DCHECK(!scratch_in.is(store_parameter)); |
| 245 | __ push(store_parameter); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 246 | } |
| 247 | DCHECK(optimization.is_simple_api_call()); |
| 248 | |
| 249 | // Abi for CallApiFunctionStub. |
| 250 | Register callee = r0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 251 | Register data = r4; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 252 | Register holder = r2; |
| 253 | Register api_function_address = r1; |
| 254 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 255 | // Put callee in place. |
| 256 | __ LoadAccessor(callee, accessor_holder, accessor_index, |
| 257 | is_store ? ACCESSOR_SETTER : ACCESSOR_GETTER); |
| 258 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 259 | // Put holder in place. |
| 260 | CallOptimization::HolderLookup holder_lookup; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 261 | int holder_depth = 0; |
| 262 | optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup, |
| 263 | &holder_depth); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 264 | switch (holder_lookup) { |
| 265 | case CallOptimization::kHolderIsReceiver: |
| 266 | __ Move(holder, receiver); |
| 267 | break; |
| 268 | case CallOptimization::kHolderFound: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 269 | __ ldr(holder, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 270 | __ ldr(holder, FieldMemOperand(holder, Map::kPrototypeOffset)); |
| 271 | for (int i = 1; i < holder_depth; i++) { |
| 272 | __ ldr(holder, FieldMemOperand(holder, HeapObject::kMapOffset)); |
| 273 | __ ldr(holder, FieldMemOperand(holder, Map::kPrototypeOffset)); |
| 274 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 275 | break; |
| 276 | case CallOptimization::kHolderNotFound: |
| 277 | UNREACHABLE(); |
| 278 | break; |
| 279 | } |
| 280 | |
| 281 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | Handle<CallHandlerInfo> api_call_info = optimization.api_call_info(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 283 | bool call_data_undefined = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 284 | // Put call data in place. |
| 285 | if (api_call_info->data()->IsUndefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 286 | call_data_undefined = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 287 | __ LoadRoot(data, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 288 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 289 | __ ldr(data, |
| 290 | FieldMemOperand(callee, JSFunction::kSharedFunctionInfoOffset)); |
| 291 | __ ldr(data, |
| 292 | FieldMemOperand(data, SharedFunctionInfo::kFunctionDataOffset)); |
| 293 | __ ldr(data, FieldMemOperand(data, FunctionTemplateInfo::kCallCodeOffset)); |
| 294 | __ ldr(data, FieldMemOperand(data, CallHandlerInfo::kDataOffset)); |
| 295 | } |
| 296 | |
| 297 | if (api_call_info->fast_handler()->IsCode()) { |
| 298 | // Just tail call into the fast handler if present. |
| 299 | __ Jump(handle(Code::cast(api_call_info->fast_handler())), |
| 300 | RelocInfo::CODE_TARGET); |
| 301 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | // Put api_function_address in place. |
| 305 | Address function_address = v8::ToCData<Address>(api_call_info->callback()); |
| 306 | ApiFunction fun(function_address); |
| 307 | ExternalReference::Type type = ExternalReference::DIRECT_API_CALL; |
| 308 | ExternalReference ref = ExternalReference(&fun, type, masm->isolate()); |
| 309 | __ mov(api_function_address, Operand(ref)); |
| 310 | |
| 311 | // Jump to stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 312 | CallApiAccessorStub stub(isolate, is_store, call_data_undefined); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 313 | __ TailCallStub(&stub); |
| 314 | } |
| 315 | |
| 316 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 317 | static void StoreIC_PushArgs(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 318 | __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 319 | StoreDescriptor::ValueRegister(), |
| 320 | VectorStoreICDescriptor::SlotRegister(), |
| 321 | VectorStoreICDescriptor::VectorRegister()); |
| 322 | } |
| 323 | |
| 324 | |
| 325 | void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) { |
| 326 | StoreIC_PushArgs(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 327 | |
| 328 | // The slow case calls into the runtime to complete the store without causing |
| 329 | // 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^] | 330 | __ TailCallRuntime(Runtime::kStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 331 | } |
| 332 | |
| 333 | |
| 334 | void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 335 | StoreIC_PushArgs(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 336 | |
| 337 | // The slow case calls into the runtime to complete the store without causing |
| 338 | // 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^] | 339 | __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | |
| 343 | #undef __ |
| 344 | #define __ ACCESS_MASM(masm()) |
| 345 | |
| 346 | |
| 347 | void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label, |
| 348 | Handle<Name> name) { |
| 349 | if (!label->is_unused()) { |
| 350 | __ bind(label); |
| 351 | __ mov(this->name(), Operand(name)); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 356 | void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) { |
| 357 | __ mov(this->name(), Operand(name)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 361 | void NamedStoreHandlerCompiler::RearrangeVectorAndSlot( |
| 362 | Register current_map, Register destination_map) { |
| 363 | DCHECK(false); // Not implemented. |
| 364 | } |
| 365 | |
| 366 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 367 | void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 368 | Register map_reg, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 369 | Register scratch, |
| 370 | Label* miss) { |
| 371 | Handle<WeakCell> cell = Map::WeakCellForMap(transition); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 372 | DCHECK(!map_reg.is(scratch)); |
| 373 | __ LoadWeakValue(map_reg, cell, miss); |
| 374 | if (transition->CanBeDeprecated()) { |
| 375 | __ ldr(scratch, FieldMemOperand(map_reg, Map::kBitField3Offset)); |
| 376 | __ tst(scratch, Operand(Map::Deprecated::kMask)); |
| 377 | __ b(ne, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 378 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 379 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 380 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 381 | |
| 382 | void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg, |
| 383 | int descriptor, |
| 384 | Register value_reg, |
| 385 | Register scratch, |
| 386 | Label* miss_label) { |
| 387 | DCHECK(!map_reg.is(scratch)); |
| 388 | DCHECK(!map_reg.is(value_reg)); |
| 389 | DCHECK(!value_reg.is(scratch)); |
| 390 | __ LoadInstanceDescriptors(map_reg, scratch); |
| 391 | __ ldr(scratch, |
| 392 | FieldMemOperand(scratch, DescriptorArray::GetValueOffset(descriptor))); |
| 393 | __ cmp(value_reg, scratch); |
| 394 | __ b(ne, miss_label); |
| 395 | } |
| 396 | |
| 397 | |
| 398 | void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type, |
| 399 | Register value_reg, |
| 400 | Label* miss_label) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 401 | Register map_reg = scratch1(); |
| 402 | Register scratch = scratch2(); |
| 403 | DCHECK(!value_reg.is(map_reg)); |
| 404 | DCHECK(!value_reg.is(scratch)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 405 | __ JumpIfSmi(value_reg, miss_label); |
| 406 | HeapType::Iterator<Map> it = field_type->Classes(); |
| 407 | if (!it.Done()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 408 | __ ldr(map_reg, FieldMemOperand(value_reg, HeapObject::kMapOffset)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 409 | Label do_store; |
| 410 | while (true) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 411 | __ CmpWeakValue(map_reg, Map::WeakCellForMap(it.Current()), scratch); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 412 | it.Advance(); |
| 413 | if (it.Done()) { |
| 414 | __ b(ne, miss_label); |
| 415 | break; |
| 416 | } |
| 417 | __ b(eq, &do_store); |
| 418 | } |
| 419 | __ bind(&do_store); |
| 420 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 421 | } |
| 422 | |
| 423 | |
| 424 | Register PropertyHandlerCompiler::CheckPrototypes( |
| 425 | Register object_reg, Register holder_reg, Register scratch1, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 426 | Register scratch2, Handle<Name> name, Label* miss, PrototypeCheckType check, |
| 427 | ReturnHolder return_what) { |
| 428 | Handle<Map> receiver_map = map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 429 | |
| 430 | // Make sure there's no overlap between holder and object registers. |
| 431 | DCHECK(!scratch1.is(object_reg) && !scratch1.is(holder_reg)); |
| 432 | DCHECK(!scratch2.is(object_reg) && !scratch2.is(holder_reg) && |
| 433 | !scratch2.is(scratch1)); |
| 434 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 435 | if (FLAG_eliminate_prototype_chain_checks) { |
| 436 | Handle<Cell> validity_cell = |
| 437 | Map::GetOrCreatePrototypeChainValidityCell(receiver_map, isolate()); |
| 438 | if (!validity_cell.is_null()) { |
| 439 | DCHECK_EQ(Smi::FromInt(Map::kPrototypeChainValid), |
| 440 | validity_cell->value()); |
| 441 | __ mov(scratch1, Operand(validity_cell)); |
| 442 | __ ldr(scratch1, FieldMemOperand(scratch1, Cell::kValueOffset)); |
| 443 | __ cmp(scratch1, Operand(Smi::FromInt(Map::kPrototypeChainValid))); |
| 444 | __ b(ne, miss); |
| 445 | } |
| 446 | |
| 447 | // The prototype chain of primitives (and their JSValue wrappers) depends |
| 448 | // on the native context, which can't be guarded by validity cells. |
| 449 | // |object_reg| holds the native context specific prototype in this case; |
| 450 | // we need to check its map. |
| 451 | if (check == CHECK_ALL_MAPS) { |
| 452 | __ ldr(scratch1, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
| 453 | Handle<WeakCell> cell = Map::WeakCellForMap(receiver_map); |
| 454 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 455 | __ b(ne, miss); |
| 456 | } |
| 457 | } |
| 458 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 459 | // Keep track of the current object in register reg. |
| 460 | Register reg = object_reg; |
| 461 | int depth = 0; |
| 462 | |
| 463 | Handle<JSObject> current = Handle<JSObject>::null(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 464 | if (receiver_map->IsJSGlobalObjectMap()) { |
| 465 | current = isolate()->global_object(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 466 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 467 | |
| 468 | // Check access rights to the global object. This has to happen after |
| 469 | // the map check so that we know that the object is actually a global |
| 470 | // object. |
| 471 | // This allows us to install generated handlers for accesses to the |
| 472 | // global proxy (as opposed to using slow ICs). See corresponding code |
| 473 | // in LookupForRead(). |
| 474 | if (receiver_map->IsJSGlobalProxyMap()) { |
| 475 | __ CheckAccessGlobalProxy(reg, scratch2, miss); |
| 476 | } |
| 477 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 478 | Handle<JSObject> prototype = Handle<JSObject>::null(); |
| 479 | Handle<Map> current_map = receiver_map; |
| 480 | Handle<Map> holder_map(holder()->map()); |
| 481 | // Traverse the prototype chain and check the maps in the prototype chain for |
| 482 | // fast and global objects or do negative lookup for normal objects. |
| 483 | while (!current_map.is_identical_to(holder_map)) { |
| 484 | ++depth; |
| 485 | |
| 486 | // Only global objects and objects that do not require access |
| 487 | // checks are allowed in stubs. |
| 488 | DCHECK(current_map->IsJSGlobalProxyMap() || |
| 489 | !current_map->is_access_check_needed()); |
| 490 | |
| 491 | prototype = handle(JSObject::cast(current_map->prototype())); |
| 492 | if (current_map->is_dictionary_map() && |
| 493 | !current_map->IsJSGlobalObjectMap()) { |
| 494 | DCHECK(!current_map->IsJSGlobalProxyMap()); // Proxy maps are fast. |
| 495 | if (!name->IsUniqueName()) { |
| 496 | DCHECK(name->IsString()); |
| 497 | name = factory()->InternalizeString(Handle<String>::cast(name)); |
| 498 | } |
| 499 | DCHECK(current.is_null() || |
| 500 | current->property_dictionary()->FindEntry(name) == |
| 501 | NameDictionary::kNotFound); |
| 502 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 503 | if (FLAG_eliminate_prototype_chain_checks && depth > 1) { |
| 504 | // TODO(jkummerow): Cache and re-use weak cell. |
| 505 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
| 506 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 507 | GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1, |
| 508 | scratch2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 509 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 510 | __ ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 511 | __ ldr(holder_reg, FieldMemOperand(scratch1, Map::kPrototypeOffset)); |
| 512 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 513 | } else { |
| 514 | Register map_reg = scratch1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 515 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 516 | __ ldr(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 517 | } |
| 518 | if (current_map->IsJSGlobalObjectMap()) { |
| 519 | GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current), |
| 520 | name, scratch2, miss); |
| 521 | } else if (!FLAG_eliminate_prototype_chain_checks && |
| 522 | (depth != 1 || check == CHECK_ALL_MAPS)) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 523 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 524 | __ CmpWeakValue(map_reg, cell, scratch2); |
| 525 | __ b(ne, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 526 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 527 | if (!FLAG_eliminate_prototype_chain_checks) { |
| 528 | __ ldr(holder_reg, FieldMemOperand(map_reg, Map::kPrototypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 529 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 530 | } |
| 531 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 532 | 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] | 533 | // Go to the next object in the prototype chain. |
| 534 | current = prototype; |
| 535 | current_map = handle(current->map()); |
| 536 | } |
| 537 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 538 | DCHECK(!current_map->IsJSGlobalProxyMap()); |
| 539 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 540 | // Log the check depth. |
| 541 | LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); |
| 542 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 543 | if (!FLAG_eliminate_prototype_chain_checks && |
| 544 | (depth != 0 || check == CHECK_ALL_MAPS)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 545 | // Check the holder map. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 546 | __ ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 547 | Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 548 | __ CmpWeakValue(scratch1, cell, scratch2); |
| 549 | __ b(ne, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 550 | } |
| 551 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 552 | bool return_holder = return_what == RETURN_HOLDER; |
| 553 | if (FLAG_eliminate_prototype_chain_checks && return_holder && depth != 0) { |
| 554 | __ LoadWeakValue(reg, isolate()->factory()->NewWeakCell(current), miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | // Return the register containing the holder. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 558 | return return_holder ? reg : no_reg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | |
| 562 | void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 563 | if (!miss->is_unused()) { |
| 564 | Label success; |
| 565 | __ b(&success); |
| 566 | __ bind(miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 567 | if (IC::ICUseVector(kind())) { |
| 568 | DCHECK(kind() == Code::LOAD_IC); |
| 569 | PopVectorAndSlot(); |
| 570 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 571 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 572 | __ bind(&success); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | |
| 577 | void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) { |
| 578 | if (!miss->is_unused()) { |
| 579 | Label success; |
| 580 | __ b(&success); |
| 581 | GenerateRestoreName(miss, name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 582 | if (IC::ICUseVector(kind())) PopVectorAndSlot(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 583 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 584 | __ bind(&success); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | |
| 589 | void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) { |
| 590 | // Return the constant value. |
| 591 | __ Move(r0, value); |
| 592 | __ Ret(); |
| 593 | } |
| 594 | |
| 595 | |
| 596 | void NamedLoadHandlerCompiler::GenerateLoadCallback( |
| 597 | Register reg, Handle<ExecutableAccessorInfo> callback) { |
| 598 | // Build AccessorInfo::args_ list on the stack and push property name below |
| 599 | // the exit frame to make GC aware of them and store pointers to them. |
| 600 | STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0); |
| 601 | STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1); |
| 602 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2); |
| 603 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3); |
| 604 | STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4); |
| 605 | STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5); |
| 606 | STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 6); |
| 607 | DCHECK(!scratch2().is(reg)); |
| 608 | DCHECK(!scratch3().is(reg)); |
| 609 | DCHECK(!scratch4().is(reg)); |
| 610 | __ push(receiver()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 611 | // Push data from ExecutableAccessorInfo. |
| 612 | Handle<Object> data(callback->data(), isolate()); |
| 613 | if (data->IsUndefined() || data->IsSmi()) { |
| 614 | __ Move(scratch3(), data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 615 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 616 | Handle<WeakCell> cell = |
| 617 | isolate()->factory()->NewWeakCell(Handle<HeapObject>::cast(data)); |
| 618 | // The callback is alive if this instruction is executed, |
| 619 | // so the weak cell is not cleared and points to data. |
| 620 | __ GetWeakValue(scratch3(), cell); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 621 | } |
| 622 | __ push(scratch3()); |
| 623 | __ LoadRoot(scratch3(), Heap::kUndefinedValueRootIndex); |
| 624 | __ mov(scratch4(), scratch3()); |
| 625 | __ Push(scratch3(), scratch4()); |
| 626 | __ mov(scratch4(), Operand(ExternalReference::isolate_address(isolate()))); |
| 627 | __ Push(scratch4(), reg); |
| 628 | __ mov(scratch2(), sp); // scratch2 = PropertyAccessorInfo::args_ |
| 629 | __ push(name()); |
| 630 | |
| 631 | // Abi for CallApiGetter |
| 632 | Register getter_address_reg = ApiGetterDescriptor::function_address(); |
| 633 | |
| 634 | Address getter_address = v8::ToCData<Address>(callback->getter()); |
| 635 | ApiFunction fun(getter_address); |
| 636 | ExternalReference::Type type = ExternalReference::DIRECT_GETTER_CALL; |
| 637 | ExternalReference ref = ExternalReference(&fun, type, isolate()); |
| 638 | __ mov(getter_address_reg, Operand(ref)); |
| 639 | |
| 640 | CallApiGetterStub stub(isolate()); |
| 641 | __ TailCallStub(&stub); |
| 642 | } |
| 643 | |
| 644 | |
| 645 | void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup( |
| 646 | LookupIterator* it, Register holder_reg) { |
| 647 | DCHECK(holder()->HasNamedInterceptor()); |
| 648 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 649 | |
| 650 | // Compile the interceptor call, followed by inline code to load the |
| 651 | // property from further up the prototype chain if the call fails. |
| 652 | // Check that the maps haven't changed. |
| 653 | DCHECK(holder_reg.is(receiver()) || holder_reg.is(scratch1())); |
| 654 | |
| 655 | // Preserve the receiver register explicitly whenever it is different from the |
| 656 | // holder and it is needed should the interceptor return without any result. |
| 657 | // The ACCESSOR case needs the receiver to be passed into C++ code, the FIELD |
| 658 | // case might cause a miss during the prototype check. |
| 659 | bool must_perform_prototype_check = |
| 660 | !holder().is_identical_to(it->GetHolder<JSObject>()); |
| 661 | bool must_preserve_receiver_reg = |
| 662 | !receiver().is(holder_reg) && |
| 663 | (it->state() == LookupIterator::ACCESSOR || must_perform_prototype_check); |
| 664 | |
| 665 | // Save necessary data before invoking an interceptor. |
| 666 | // Requires a frame to make GC aware of pushed pointers. |
| 667 | { |
| 668 | FrameAndConstantPoolScope frame_scope(masm(), StackFrame::INTERNAL); |
| 669 | if (must_preserve_receiver_reg) { |
| 670 | __ Push(receiver(), holder_reg, this->name()); |
| 671 | } else { |
| 672 | __ Push(holder_reg, this->name()); |
| 673 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 674 | InterceptorVectorSlotPush(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 675 | // Invoke an interceptor. Note: map checks from receiver to |
| 676 | // interceptor's holder has been compiled before (see a caller |
| 677 | // of this method.) |
| 678 | CompileCallLoadPropertyWithInterceptor( |
| 679 | masm(), receiver(), holder_reg, this->name(), holder(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 680 | Runtime::kLoadPropertyWithInterceptorOnly); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 681 | |
| 682 | // Check if interceptor provided a value for property. If it's |
| 683 | // the case, return immediately. |
| 684 | Label interceptor_failed; |
| 685 | __ LoadRoot(scratch1(), Heap::kNoInterceptorResultSentinelRootIndex); |
| 686 | __ cmp(r0, scratch1()); |
| 687 | __ b(eq, &interceptor_failed); |
| 688 | frame_scope.GenerateLeaveFrame(); |
| 689 | __ Ret(); |
| 690 | |
| 691 | __ bind(&interceptor_failed); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 692 | InterceptorVectorSlotPop(holder_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 693 | __ pop(this->name()); |
| 694 | __ pop(holder_reg); |
| 695 | if (must_preserve_receiver_reg) { |
| 696 | __ pop(receiver()); |
| 697 | } |
| 698 | // Leave the internal frame. |
| 699 | } |
| 700 | |
| 701 | GenerateLoadPostInterceptor(it, holder_reg); |
| 702 | } |
| 703 | |
| 704 | |
| 705 | void NamedLoadHandlerCompiler::GenerateLoadInterceptor(Register holder_reg) { |
| 706 | // Call the runtime system to load the interceptor. |
| 707 | DCHECK(holder()->HasNamedInterceptor()); |
| 708 | DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined()); |
| 709 | PushInterceptorArguments(masm(), receiver(), holder_reg, this->name(), |
| 710 | holder()); |
| 711 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 712 | __ TailCallRuntime(Runtime::kLoadPropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | |
| 716 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback( |
| 717 | Handle<JSObject> object, Handle<Name> name, |
| 718 | Handle<ExecutableAccessorInfo> callback) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 719 | Register holder_reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 720 | |
| 721 | __ push(receiver()); // receiver |
| 722 | __ push(holder_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 723 | |
| 724 | // If the callback cannot leak, then push the callback directly, |
| 725 | // otherwise wrap it in a weak cell. |
| 726 | if (callback->data()->IsUndefined() || callback->data()->IsSmi()) { |
| 727 | __ mov(ip, Operand(callback)); |
| 728 | } else { |
| 729 | Handle<WeakCell> cell = isolate()->factory()->NewWeakCell(callback); |
| 730 | __ mov(ip, Operand(cell)); |
| 731 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 732 | __ push(ip); |
| 733 | __ mov(ip, Operand(name)); |
| 734 | __ Push(ip, value()); |
| 735 | |
| 736 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 737 | __ TailCallRuntime(Runtime::kStoreCallbackProperty); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 738 | |
| 739 | // Return the generated code. |
| 740 | return GetCode(kind(), Code::FAST, name); |
| 741 | } |
| 742 | |
| 743 | |
| 744 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreInterceptor( |
| 745 | Handle<Name> name) { |
| 746 | __ Push(receiver(), this->name(), value()); |
| 747 | |
| 748 | // Do tail-call to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 749 | __ TailCallRuntime(Runtime::kStorePropertyWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 750 | |
| 751 | // Return the generated code. |
| 752 | return GetCode(kind(), Code::FAST, name); |
| 753 | } |
| 754 | |
| 755 | |
| 756 | Register NamedStoreHandlerCompiler::value() { |
| 757 | return StoreDescriptor::ValueRegister(); |
| 758 | } |
| 759 | |
| 760 | |
| 761 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal( |
| 762 | Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) { |
| 763 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 764 | if (IC::ICUseVector(kind())) { |
| 765 | PushVectorAndSlot(); |
| 766 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 767 | FrontendHeader(receiver(), name, &miss, DONT_RETURN_ANYTHING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 768 | |
| 769 | // Get the value from the cell. |
| 770 | Register result = StoreDescriptor::ValueRegister(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 771 | Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell); |
| 772 | __ LoadWeakValue(result, weak_cell, &miss); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 773 | __ ldr(result, FieldMemOperand(result, PropertyCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 774 | |
| 775 | // Check for deleted property if property can actually be deleted. |
| 776 | if (is_configurable) { |
| 777 | __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); |
| 778 | __ cmp(result, ip); |
| 779 | __ b(eq, &miss); |
| 780 | } |
| 781 | |
| 782 | Counters* counters = isolate()->counters(); |
| 783 | __ IncrementCounter(counters->named_load_global_stub(), 1, r1, r3); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 784 | if (IC::ICUseVector(kind())) { |
| 785 | DiscardVectorAndSlot(); |
| 786 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 787 | __ Ret(); |
| 788 | |
| 789 | FrontendFooter(name, &miss); |
| 790 | |
| 791 | // Return the generated code. |
| 792 | return GetCode(kind(), Code::NORMAL, name); |
| 793 | } |
| 794 | |
| 795 | |
| 796 | #undef __ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 797 | } // namespace internal |
| 798 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 799 | |
| 800 | #endif // V8_TARGET_ARCH_ARM |