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 NON_EXPORTED_BASE(AllStatic)21 : public NON_EXPORTED_BASE(AllStatic) { 22 public: 23 // =========================================================================== 24 // Access to external values (based on external references). 25 26 // Provides access to a double field identified by an external reference. 27 static FieldAccess ForExternalDoubleValue(); 28 29 // Provides access to a tagged field identified by an external reference. 30 static FieldAccess ForExternalTaggedValue(); 31 32 // Provides access to an uint8 field identified by an external reference. 33 static FieldAccess ForExternalUint8Value(); 34 35 // =========================================================================== 36 // Access to heap object fields and elements (based on tagged pointer). 37 38 // Provides access to HeapObject::map() field. 39 static FieldAccess ForMap(); 40 41 // Provides access to HeapNumber::value() field. 42 static FieldAccess ForHeapNumberValue(); 43 44 // Provides access to JSObject::properties() field. 45 static FieldAccess ForJSObjectProperties(); 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(Handle<Map> 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 JSFunction::prototype_or_initial_map() field. 59 static FieldAccess ForJSFunctionPrototypeOrInitialMap(); 60 61 // Provides access to JSFunction::context() field. 62 static FieldAccess ForJSFunctionContext(); 63 64 // Provides access to JSFunction::shared() field. 65 static FieldAccess ForJSFunctionSharedFunctionInfo(); 66 67 // Provides access to JSFunction::feedback_vector() field. 68 static FieldAccess ForJSFunctionFeedbackVector(); 69 70 // Provides access to JSFunction::code() field. 71 static FieldAccess ForJSFunctionCodeEntry(); 72 73 // Provides access to JSFunction::next_function_link() field. 74 static FieldAccess ForJSFunctionNextFunctionLink(); 75 76 // Provides access to JSGeneratorObject::context() field. 77 static FieldAccess ForJSGeneratorObjectContext(); 78 79 // Provides access to JSGeneratorObject::continuation() field. 80 static FieldAccess ForJSGeneratorObjectContinuation(); 81 82 // Provides access to JSGeneratorObject::input_or_debug_pos() field. 83 static FieldAccess ForJSGeneratorObjectInputOrDebugPos(); 84 85 // Provides access to JSGeneratorObject::register_file() field. 86 static FieldAccess ForJSGeneratorObjectRegisterFile(); 87 88 // Provides access to JSGeneratorObject::resume_mode() field. 89 static FieldAccess ForJSGeneratorObjectResumeMode(); 90 91 // Provides access to JSArray::length() field. 92 static FieldAccess ForJSArrayLength(ElementsKind elements_kind); 93 94 // Provides access to JSArrayBuffer::backing_store() field. 95 static FieldAccess ForJSArrayBufferBackingStore(); 96 97 // Provides access to JSArrayBuffer::bit_field() field. 98 static FieldAccess ForJSArrayBufferBitField(); 99 100 // Provides access to JSArrayBufferView::buffer() field. 101 static FieldAccess ForJSArrayBufferViewBuffer(); 102 103 // Provides access to JSArrayBufferView::byteLength() field. 104 static FieldAccess ForJSArrayBufferViewByteLength(); 105 106 // Provides access to JSArrayBufferView::byteOffset() field. 107 static FieldAccess ForJSArrayBufferViewByteOffset(); 108 109 // Provides access to JSTypedArray::length() field. 110 static FieldAccess ForJSTypedArrayLength(); 111 112 // Provides access to JSDate::value() field. 113 static FieldAccess ForJSDateValue(); 114 115 // Provides access to JSDate fields. 116 static FieldAccess ForJSDateField(JSDate::FieldIndex index); 117 118 // Provides access to JSIteratorResult::done() field. 119 static FieldAccess ForJSIteratorResultDone(); 120 121 // Provides access to JSIteratorResult::value() field. 122 static FieldAccess ForJSIteratorResultValue(); 123 124 // Provides access to JSRegExp::flags() field. 125 static FieldAccess ForJSRegExpFlags(); 126 127 // Provides access to JSRegExp::source() field. 128 static FieldAccess ForJSRegExpSource(); 129 130 // Provides access to FixedArray::length() field. 131 static FieldAccess ForFixedArrayLength(); 132 133 // Provides access to FixedTypedArrayBase::base_pointer() field. 134 static FieldAccess ForFixedTypedArrayBaseBasePointer(); 135 136 // Provides access to FixedTypedArrayBase::external_pointer() field. 137 static FieldAccess ForFixedTypedArrayBaseExternalPointer(); 138 139 // Provides access to DescriptorArray::enum_cache() field. 140 static FieldAccess ForDescriptorArrayEnumCache(); 141 142 // Provides access to DescriptorArray::enum_cache_bridge_cache() field. 143 static FieldAccess ForDescriptorArrayEnumCacheBridgeCache(); 144 145 // Provides access to Map::bit_field() byte. 146 static FieldAccess ForMapBitField(); 147 148 // Provides access to Map::bit_field3() field. 149 static FieldAccess ForMapBitField3(); 150 151 // Provides access to Map::descriptors() field. 152 static FieldAccess ForMapDescriptors(); 153 154 // Provides access to Map::instance_type() field. 155 static FieldAccess ForMapInstanceType(); 156 157 // Provides access to Map::prototype() field. 158 static FieldAccess ForMapPrototype(); 159 160 // Provides access to Module::regular_exports() field. 161 static FieldAccess ForModuleRegularExports(); 162 163 // Provides access to Module::regular_imports() field. 164 static FieldAccess ForModuleRegularImports(); 165 166 // Provides access to Name::hash_field() field. 167 static FieldAccess ForNameHashField(); 168 169 // Provides access to String::length() field. 170 static FieldAccess ForStringLength(); 171 172 // Provides access to ConsString::first() field. 173 static FieldAccess ForConsStringFirst(); 174 175 // Provides access to ConsString::second() field. 176 static FieldAccess ForConsStringSecond(); 177 178 // Provides access to ThinString::actual() field. 179 static FieldAccess ForThinStringActual(); 180 181 // Provides access to SlicedString::offset() field. 182 static FieldAccess ForSlicedStringOffset(); 183 184 // Provides access to SlicedString::parent() field. 185 static FieldAccess ForSlicedStringParent(); 186 187 // Provides access to ExternalString::resource_data() field. 188 static FieldAccess ForExternalStringResourceData(); 189 190 // Provides access to ExternalOneByteString characters. 191 static ElementAccess ForExternalOneByteStringCharacter(); 192 193 // Provides access to ExternalTwoByteString characters. 194 static ElementAccess ForExternalTwoByteStringCharacter(); 195 196 // Provides access to SeqOneByteString characters. 197 static ElementAccess ForSeqOneByteStringCharacter(); 198 199 // Provides access to SeqTwoByteString characters. 200 static ElementAccess ForSeqTwoByteStringCharacter(); 201 202 // Provides access to JSGlobalObject::global_proxy() field. 203 static FieldAccess ForJSGlobalObjectGlobalProxy(); 204 205 // Provides access to JSGlobalObject::native_context() field. 206 static FieldAccess ForJSGlobalObjectNativeContext(); 207 208 // Provides access to JSArrayIterator::object() field. 209 static FieldAccess ForJSArrayIteratorObject(); 210 211 // Provides access to JSArrayIterator::index() field. 212 static FieldAccess ForJSArrayIteratorIndex(InstanceType type = JS_OBJECT_TYPE, 213 ElementsKind kind = NO_ELEMENTS); 214 215 // Provides access to JSArrayIterator::object_map() field. 216 static FieldAccess ForJSArrayIteratorObjectMap(); 217 218 // Provides access to JSStringIterator::string() field. 219 static FieldAccess ForJSStringIteratorString(); 220 221 // Provides access to JSStringIterator::index() field. 222 static FieldAccess ForJSStringIteratorIndex(); 223 224 // Provides access to JSValue::value() field. 225 static FieldAccess ForValue(); 226 227 // Provides access to Cell::value() field. 228 static FieldAccess ForCellValue(); 229 230 // Provides access to arguments object fields. 231 static FieldAccess ForArgumentsLength(); 232 static FieldAccess ForArgumentsCallee(); 233 234 // Provides access to FixedArray slots. 235 static FieldAccess ForFixedArraySlot( 236 size_t index, WriteBarrierKind write_barrier_kind = kFullWriteBarrier); 237 238 // Provides access to Context slots. 239 static FieldAccess ForContextSlot(size_t index); 240 241 // Provides access to ContextExtension fields. 242 static FieldAccess ForContextExtensionScopeInfo(); 243 static FieldAccess ForContextExtensionExtension(); 244 245 // Provides access to FixedArray elements. 246 static ElementAccess ForFixedArrayElement(); 247 static ElementAccess ForFixedArrayElement(ElementsKind kind); 248 249 // Provides access to FixedDoubleArray elements. 250 static ElementAccess ForFixedDoubleArrayElement(); 251 252 // Provides access to Fixed{type}TypedArray and External{type}Array elements. 253 static ElementAccess ForTypedArrayElement(ExternalArrayType type, 254 bool is_external); 255 256 // Provides access to HashTable fields. 257 static FieldAccess ForHashTableBaseNumberOfElements(); 258 static FieldAccess ForHashTableBaseNumberOfDeletedElement(); 259 static FieldAccess ForHashTableBaseCapacity(); 260 261 // Provides access to Dictionary fields. 262 static FieldAccess ForDictionaryMaxNumberKey(); 263 static FieldAccess ForDictionaryNextEnumerationIndex(); 264 265 private: 266 DISALLOW_IMPLICIT_CONSTRUCTORS(AccessBuilder); 267 }; 268 269 } // namespace compiler 270 } // namespace internal 271 } // namespace v8 272 273 #endif // V8_COMPILER_ACCESS_BUILDER_H_ 274