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 5 #ifndef V8_COMPILER_ACCESS_BUILDER_H_ 6 #define V8_COMPILER_ACCESS_BUILDER_H_ 7 8 #include "src/base/compiler-specific.h" 9 #include "src/compiler/simplified-operator.h" 10 #include "src/elements-kind.h" 11 #include "src/globals.h" 12 13 namespace v8 { 14 namespace internal { 15 namespace compiler { 16 17 // This access builder provides a set of static methods constructing commonly 18 // used FieldAccess and ElementAccess descriptors. These descriptors serve as 19 // parameters to simplified load/store operators. 20 class V8_EXPORT_PRIVATE AccessBuilder final 21 : public NON_EXPORTED_BASE(AllStatic) { 22 public: 23 // =========================================================================== 24 // Access to external values (based on external references). 25 26 // Provides access to a tagged field identified by an external reference. 27 static FieldAccess ForExternalTaggedValue(); 28 29 // Provides access to an uint8 field identified by an external reference. 30 static FieldAccess ForExternalUint8Value(); 31 32 // =========================================================================== 33 // Access to heap object fields and elements (based on tagged pointer). 34 35 // Provides access to HeapObject::map() field. 36 static FieldAccess ForMap(); 37 38 // Provides access to HeapNumber::value() field. 39 static FieldAccess ForHeapNumberValue(); 40 41 // Provides access to BigInt's bit field. 42 static FieldAccess ForBigIntBitfield(); 43 44 // Provides access to JSObject::properties() field. 45 static FieldAccess ForJSObjectPropertiesOrHash(); 46 47 // Provides access to JSObject::elements() field. 48 static FieldAccess ForJSObjectElements(); 49 50 // Provides access to JSObject inobject property fields. 51 static FieldAccess ForJSObjectInObjectProperty(const MapRef& map, int index); 52 static FieldAccess ForJSObjectOffset( 53 int offset, WriteBarrierKind write_barrier_kind = kFullWriteBarrier); 54 55 // Provides access to JSCollecton::table() field. 56 static FieldAccess ForJSCollectionTable(); 57 58 // Provides access to JSCollectionIterator::table() field. 59 static FieldAccess ForJSCollectionIteratorTable(); 60 61 // Provides access to JSCollectionIterator::index() field. 62 static FieldAccess ForJSCollectionIteratorIndex(); 63 64 // Provides access to JSFunction::prototype_or_initial_map() field. 65 static FieldAccess ForJSFunctionPrototypeOrInitialMap(); 66 67 // Provides access to JSFunction::context() field. 68 static FieldAccess ForJSFunctionContext(); 69 70 // Provides access to JSFunction::shared() field. 71 static FieldAccess ForJSFunctionSharedFunctionInfo(); 72 73 // Provides access to JSFunction::feedback_cell() field. 74 static FieldAccess ForJSFunctionFeedbackCell(); 75 76 // Provides access to JSFunction::code() field. 77 static FieldAccess ForJSFunctionCode(); 78 79 // Provides access to JSBoundFunction::bound_target_function() field. 80 static FieldAccess ForJSBoundFunctionBoundTargetFunction(); 81 82 // Provides access to JSBoundFunction::bound_this() field. 83 static FieldAccess ForJSBoundFunctionBoundThis(); 84 85 // Provides access to JSBoundFunction::bound_arguments() field. 86 static FieldAccess ForJSBoundFunctionBoundArguments(); 87 88 // Provides access to JSGeneratorObject::context() field. 89 static FieldAccess ForJSGeneratorObjectContext(); 90 91 // Provides access to JSGeneratorObject::continuation() field. 92 static FieldAccess ForJSGeneratorObjectContinuation(); 93 94 // Provides access to JSGeneratorObject::input_or_debug_pos() field. 95 static FieldAccess ForJSGeneratorObjectInputOrDebugPos(); 96 97 // Provides access to JSGeneratorObject::parameters_and_registers() field. 98 static FieldAccess ForJSGeneratorObjectParametersAndRegisters(); 99 100 // Provides access to JSGeneratorObject::function() field. 101 static FieldAccess ForJSGeneratorObjectFunction(); 102 103 // Provides access to JSGeneratorObject::receiver() field. 104 static FieldAccess ForJSGeneratorObjectReceiver(); 105 106 // Provides access to JSGeneratorObject::resume_mode() field. 107 static FieldAccess ForJSGeneratorObjectResumeMode(); 108 109 // Provides access to JSAsyncGeneratorObject::queue() field. 110 static FieldAccess ForJSAsyncGeneratorObjectQueue(); 111 112 // Provides access to JSAsyncGeneratorObject::is_awaiting() field. 113 static FieldAccess ForJSAsyncGeneratorObjectIsAwaiting(); 114 115 // Provides access to JSArray::length() field. 116 static FieldAccess ForJSArrayLength(ElementsKind elements_kind); 117 118 // Provides access to JSArrayBuffer::backing_store() field. 119 static FieldAccess ForJSArrayBufferBackingStore(); 120 121 // Provides access to JSArrayBuffer::bit_field() field. 122 static FieldAccess ForJSArrayBufferBitField(); 123 124 // Provides access to JSArrayBufferView::buffer() field. 125 static FieldAccess ForJSArrayBufferViewBuffer(); 126 127 // Provides access to JSArrayBufferView::byteLength() field. 128 static FieldAccess ForJSArrayBufferViewByteLength(); 129 130 // Provides access to JSArrayBufferView::byteOffset() field. 131 static FieldAccess ForJSArrayBufferViewByteOffset(); 132 133 // Provides access to JSTypedArray::length() field. 134 static FieldAccess ForJSTypedArrayLength(); 135 136 // Provides access to JSDate::value() field. 137 static FieldAccess ForJSDateValue(); 138 139 // Provides access to JSDate fields. 140 static FieldAccess ForJSDateField(JSDate::FieldIndex index); 141 142 // Provides access to JSIteratorResult::done() field. 143 static FieldAccess ForJSIteratorResultDone(); 144 145 // Provides access to JSIteratorResult::value() field. 146 static FieldAccess ForJSIteratorResultValue(); 147 148 // Provides access to JSRegExp::data() field. 149 static FieldAccess ForJSRegExpData(); 150 151 // Provides access to JSRegExp::flags() field. 152 static FieldAccess ForJSRegExpFlags(); 153 154 // Provides access to JSRegExp::last_index() field. 155 static FieldAccess ForJSRegExpLastIndex(); 156 157 // Provides access to JSRegExp::source() field. 158 static FieldAccess ForJSRegExpSource(); 159 160 // Provides access to FixedArray::length() field. 161 static FieldAccess ForFixedArrayLength(); 162 163 // Provides access to PropertyArray::length() field. 164 static FieldAccess ForPropertyArrayLengthAndHash(); 165 166 // Provides access to FixedTypedArrayBase::base_pointer() field. 167 static FieldAccess ForFixedTypedArrayBaseBasePointer(); 168 169 // Provides access to FixedTypedArrayBase::external_pointer() field. 170 static FieldAccess ForFixedTypedArrayBaseExternalPointer(); 171 172 // Provides access to DescriptorArray::enum_cache() field. 173 static FieldAccess ForDescriptorArrayEnumCache(); 174 175 // Provides access to Map::bit_field() byte. 176 static FieldAccess ForMapBitField(); 177 178 // Provides access to Map::bit_field2() byte. 179 static FieldAccess ForMapBitField2(); 180 181 // Provides access to Map::bit_field3() field. 182 static FieldAccess ForMapBitField3(); 183 184 // Provides access to Map::descriptors() field. 185 static FieldAccess ForMapDescriptors(); 186 187 // Provides access to Map::instance_type() field. 188 static FieldAccess ForMapInstanceType(); 189 190 // Provides access to Map::prototype() field. 191 static FieldAccess ForMapPrototype(); 192 193 // Provides access to Module::regular_exports() field. 194 static FieldAccess ForModuleRegularExports(); 195 196 // Provides access to Module::regular_imports() field. 197 static FieldAccess ForModuleRegularImports(); 198 199 // Provides access to Name::hash_field() field. 200 static FieldAccess ForNameHashField(); 201 202 // Provides access to String::length() field. 203 static FieldAccess ForStringLength(); 204 205 // Provides access to ConsString::first() field. 206 static FieldAccess ForConsStringFirst(); 207 208 // Provides access to ConsString::second() field. 209 static FieldAccess ForConsStringSecond(); 210 211 // Provides access to ThinString::actual() field. 212 static FieldAccess ForThinStringActual(); 213 214 // Provides access to SlicedString::offset() field. 215 static FieldAccess ForSlicedStringOffset(); 216 217 // Provides access to SlicedString::parent() field. 218 static FieldAccess ForSlicedStringParent(); 219 220 // Provides access to ExternalString::resource_data() field. 221 static FieldAccess ForExternalStringResourceData(); 222 223 // Provides access to ExternalOneByteString characters. 224 static ElementAccess ForExternalOneByteStringCharacter(); 225 226 // Provides access to ExternalTwoByteString characters. 227 static ElementAccess ForExternalTwoByteStringCharacter(); 228 229 // Provides access to SeqOneByteString characters. 230 static ElementAccess ForSeqOneByteStringCharacter(); 231 232 // Provides access to SeqTwoByteString characters. 233 static ElementAccess ForSeqTwoByteStringCharacter(); 234 235 // Provides access to JSGlobalObject::global_proxy() field. 236 static FieldAccess ForJSGlobalObjectGlobalProxy(); 237 238 // Provides access to JSGlobalObject::native_context() field. 239 static FieldAccess ForJSGlobalObjectNativeContext(); 240 241 // Provides access to JSGlobalProxy::native_context() field. 242 static FieldAccess ForJSGlobalProxyNativeContext(); 243 244 // Provides access to JSArrayIterator::iterated_object() field. 245 static FieldAccess ForJSArrayIteratorIteratedObject(); 246 247 // Provides access to JSArrayIterator::next_index() field. 248 static FieldAccess ForJSArrayIteratorNextIndex(); 249 250 // Provides access to JSArrayIterator::kind() field. 251 static FieldAccess ForJSArrayIteratorKind(); 252 253 // Provides access to JSStringIterator::string() field. 254 static FieldAccess ForJSStringIteratorString(); 255 256 // Provides access to JSStringIterator::index() field. 257 static FieldAccess ForJSStringIteratorIndex(); 258 259 // Provides access to JSValue::value() field. 260 static FieldAccess ForValue(); 261 262 // Provides access to Cell::value() field. 263 static FieldAccess ForCellValue(); 264 265 // Provides access to arguments object fields. 266 static FieldAccess ForArgumentsLength(); 267 static FieldAccess ForArgumentsCallee(); 268 269 // Provides access to FixedArray slots. 270 static FieldAccess ForFixedArraySlot( 271 size_t index, WriteBarrierKind write_barrier_kind = kFullWriteBarrier); 272 273 // Provides access to Context slots. 274 static FieldAccess ForContextSlot(size_t index); 275 276 // Provides access to FixedArray elements. 277 static ElementAccess ForFixedArrayElement(); 278 static ElementAccess ForFixedArrayElement( 279 ElementsKind kind, 280 LoadSensitivity load_sensitivity = LoadSensitivity::kUnsafe); 281 282 // Provides access to FixedDoubleArray elements. 283 static ElementAccess ForFixedDoubleArrayElement(); 284 285 // Provides access to EnumCache::keys() field. 286 static FieldAccess ForEnumCacheKeys(); 287 288 // Provides access to EnumCache::indices() field. 289 static FieldAccess ForEnumCacheIndices(); 290 291 // Provides access to Fixed{type}TypedArray and External{type}Array elements. 292 static ElementAccess ForTypedArrayElement( 293 ExternalArrayType type, bool is_external, 294 LoadSensitivity load_sensitivity = LoadSensitivity::kUnsafe); 295 296 // Provides access to HashTable fields. 297 static FieldAccess ForHashTableBaseNumberOfElements(); 298 static FieldAccess ForHashTableBaseNumberOfDeletedElement(); 299 static FieldAccess ForHashTableBaseCapacity(); 300 301 // Provides access to OrderedHashTableBase fields. 302 static FieldAccess ForOrderedHashTableBaseNextTable(); 303 static FieldAccess ForOrderedHashTableBaseNumberOfBuckets(); 304 static FieldAccess ForOrderedHashTableBaseNumberOfElements(); 305 static FieldAccess ForOrderedHashTableBaseNumberOfDeletedElements(); 306 307 // Provides access to OrderedHashMap elements. 308 static ElementAccess ForOrderedHashMapEntryValue(); 309 310 // Provides access to Dictionary fields. 311 static FieldAccess ForDictionaryMaxNumberKey(); 312 static FieldAccess ForDictionaryNextEnumerationIndex(); 313 static FieldAccess ForDictionaryObjectHashIndex(); 314 315 private: 316 DISALLOW_IMPLICIT_CONSTRUCTORS(AccessBuilder); 317 }; 318 319 } // namespace compiler 320 } // namespace internal 321 } // namespace v8 322 323 #endif // V8_COMPILER_ACCESS_BUILDER_H_ 324
