runtime.h revision 0d5e116f6aee03185f237311a943491bb079a768
1// Copyright 2010 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28#ifndef V8_RUNTIME_H_ 29#define V8_RUNTIME_H_ 30 31namespace v8 { 32namespace internal { 33 34// The interface to C++ runtime functions. 35 36// ---------------------------------------------------------------------------- 37// RUNTIME_FUNCTION_LIST_ALWAYS defines runtime calls available in both 38// release and debug mode. 39// This macro should only be used by the macro RUNTIME_FUNCTION_LIST. 40 41// WARNING: RUNTIME_FUNCTION_LIST_ALWAYS_* is a very large macro that caused 42// MSVC Intellisense to crash. It was broken into two macros to work around 43// this problem. Please avoid large recursive macros whenever possible. 44#define RUNTIME_FUNCTION_LIST_ALWAYS_1(F) \ 45 /* Property access */ \ 46 F(GetProperty, 2, 1) \ 47 F(KeyedGetProperty, 2, 1) \ 48 F(DeleteProperty, 2, 1) \ 49 F(HasLocalProperty, 2, 1) \ 50 F(HasProperty, 2, 1) \ 51 F(HasElement, 2, 1) \ 52 F(IsPropertyEnumerable, 2, 1) \ 53 F(GetPropertyNames, 1, 1) \ 54 F(GetPropertyNamesFast, 1, 1) \ 55 F(GetLocalPropertyNames, 1, 1) \ 56 F(GetLocalElementNames, 1, 1) \ 57 F(GetInterceptorInfo, 1, 1) \ 58 F(GetNamedInterceptorPropertyNames, 1, 1) \ 59 F(GetIndexedInterceptorElementNames, 1, 1) \ 60 F(GetArgumentsProperty, 1, 1) \ 61 F(ToFastProperties, 1, 1) \ 62 F(ToSlowProperties, 1, 1) \ 63 F(FinishArrayPrototypeSetup, 1, 1) \ 64 F(SpecialArrayFunctions, 1, 1) \ 65 F(GetGlobalReceiver, 0, 1) \ 66 \ 67 F(IsInPrototypeChain, 2, 1) \ 68 F(SetHiddenPrototype, 2, 1) \ 69 \ 70 F(IsConstructCall, 0, 1) \ 71 \ 72 F(GetOwnProperty, 2, 1) \ 73 \ 74 F(IsExtensible, 1, 1) \ 75 F(PreventExtensions, 1, 1)\ 76 \ 77 /* Utilities */ \ 78 F(GetFunctionDelegate, 1, 1) \ 79 F(GetConstructorDelegate, 1, 1) \ 80 F(NewArgumentsFast, 3, 1) \ 81 F(LazyCompile, 1, 1) \ 82 F(SetNewFunctionAttributes, 1, 1) \ 83 F(AllocateInNewSpace, 1, 1) \ 84 \ 85 /* Array join support */ \ 86 F(PushIfAbsent, 2, 1) \ 87 F(ArrayConcat, 1, 1) \ 88 \ 89 /* Conversions */ \ 90 F(ToBool, 1, 1) \ 91 F(Typeof, 1, 1) \ 92 \ 93 F(StringToNumber, 1, 1) \ 94 F(StringFromCharCodeArray, 1, 1) \ 95 F(StringParseInt, 2, 1) \ 96 F(StringParseFloat, 1, 1) \ 97 F(StringToLowerCase, 1, 1) \ 98 F(StringToUpperCase, 1, 1) \ 99 F(StringSplit, 3, 1) \ 100 F(CharFromCode, 1, 1) \ 101 F(URIEscape, 1, 1) \ 102 F(URIUnescape, 1, 1) \ 103 \ 104 F(NumberToString, 1, 1) \ 105 F(NumberToStringSkipCache, 1, 1) \ 106 F(NumberToInteger, 1, 1) \ 107 F(NumberToIntegerMapMinusZero, 1, 1) \ 108 F(NumberToJSUint32, 1, 1) \ 109 F(NumberToJSInt32, 1, 1) \ 110 F(NumberToSmi, 1, 1) \ 111 \ 112 /* Arithmetic operations */ \ 113 F(NumberAdd, 2, 1) \ 114 F(NumberSub, 2, 1) \ 115 F(NumberMul, 2, 1) \ 116 F(NumberDiv, 2, 1) \ 117 F(NumberMod, 2, 1) \ 118 F(NumberUnaryMinus, 1, 1) \ 119 F(NumberAlloc, 0, 1) \ 120 \ 121 F(StringAdd, 2, 1) \ 122 F(StringBuilderConcat, 3, 1) \ 123 \ 124 /* Bit operations */ \ 125 F(NumberOr, 2, 1) \ 126 F(NumberAnd, 2, 1) \ 127 F(NumberXor, 2, 1) \ 128 F(NumberNot, 1, 1) \ 129 \ 130 F(NumberShl, 2, 1) \ 131 F(NumberShr, 2, 1) \ 132 F(NumberSar, 2, 1) \ 133 \ 134 /* Comparisons */ \ 135 F(NumberEquals, 2, 1) \ 136 F(StringEquals, 2, 1) \ 137 \ 138 F(NumberCompare, 3, 1) \ 139 F(SmiLexicographicCompare, 2, 1) \ 140 F(StringCompare, 2, 1) \ 141 \ 142 /* Math */ \ 143 F(Math_acos, 1, 1) \ 144 F(Math_asin, 1, 1) \ 145 F(Math_atan, 1, 1) \ 146 F(Math_atan2, 2, 1) \ 147 F(Math_ceil, 1, 1) \ 148 F(Math_cos, 1, 1) \ 149 F(Math_exp, 1, 1) \ 150 F(Math_floor, 1, 1) \ 151 F(Math_log, 1, 1) \ 152 F(Math_pow, 2, 1) \ 153 F(Math_pow_cfunction, 2, 1) \ 154 F(RoundNumber, 1, 1) \ 155 F(Math_sin, 1, 1) \ 156 F(Math_sqrt, 1, 1) \ 157 F(Math_tan, 1, 1) \ 158 \ 159 /* Regular expressions */ \ 160 F(RegExpCompile, 3, 1) \ 161 F(RegExpExec, 4, 1) \ 162 F(RegExpExecMultiple, 4, 1) \ 163 F(RegExpInitializeObject, 5, 1) \ 164 F(RegExpConstructResult, 3, 1) \ 165 F(RegExpCloneResult, 1, 1) \ 166 \ 167 /* Strings */ \ 168 F(StringCharCodeAt, 2, 1) \ 169 F(StringIndexOf, 3, 1) \ 170 F(StringLastIndexOf, 3, 1) \ 171 F(StringLocaleCompare, 2, 1) \ 172 F(SubString, 3, 1) \ 173 F(StringReplaceRegExpWithString, 4, 1) \ 174 F(StringMatch, 3, 1) \ 175 F(StringTrim, 3, 1) \ 176 F(StringToArray, 1, 1) \ 177 F(NewStringWrapper, 1, 1) \ 178 \ 179 /* Numbers */ \ 180 F(NumberToRadixString, 2, 1) \ 181 F(NumberToFixed, 2, 1) \ 182 F(NumberToExponential, 2, 1) \ 183 F(NumberToPrecision, 2, 1) 184 185#define RUNTIME_FUNCTION_LIST_ALWAYS_2(F) \ 186 /* Reflection */ \ 187 F(FunctionSetInstanceClassName, 2, 1) \ 188 F(FunctionSetLength, 2, 1) \ 189 F(FunctionSetPrototype, 2, 1) \ 190 F(FunctionGetName, 1, 1) \ 191 F(FunctionSetName, 2, 1) \ 192 F(FunctionRemovePrototype, 1, 1) \ 193 F(FunctionGetSourceCode, 1, 1) \ 194 F(FunctionGetScript, 1, 1) \ 195 F(FunctionGetScriptSourcePosition, 1, 1) \ 196 F(FunctionGetPositionForOffset, 2, 1) \ 197 F(FunctionIsAPIFunction, 1, 1) \ 198 F(FunctionIsBuiltin, 1, 1) \ 199 F(GetScript, 1, 1) \ 200 F(CollectStackTrace, 2, 1) \ 201 F(GetV8Version, 0, 1) \ 202 \ 203 F(ClassOf, 1, 1) \ 204 F(SetCode, 2, 1) \ 205 F(SetExpectedNumberOfProperties, 2, 1) \ 206 \ 207 F(CreateApiFunction, 1, 1) \ 208 F(IsTemplate, 1, 1) \ 209 F(GetTemplateField, 2, 1) \ 210 F(DisableAccessChecks, 1, 1) \ 211 F(EnableAccessChecks, 1, 1) \ 212 \ 213 /* Dates */ \ 214 F(DateCurrentTime, 0, 1) \ 215 F(DateParseString, 2, 1) \ 216 F(DateLocalTimezone, 1, 1) \ 217 F(DateLocalTimeOffset, 0, 1) \ 218 F(DateDaylightSavingsOffset, 1, 1) \ 219 F(DateMakeDay, 3, 1) \ 220 F(DateYMDFromTime, 2, 1) \ 221 \ 222 /* Numbers */ \ 223 \ 224 /* Globals */ \ 225 F(CompileString, 2, 1) \ 226 F(GlobalPrint, 1, 1) \ 227 \ 228 /* Eval */ \ 229 F(GlobalReceiver, 1, 1) \ 230 F(ResolvePossiblyDirectEval, 3, 2) \ 231 F(ResolvePossiblyDirectEvalNoLookup, 3, 2) \ 232 \ 233 F(SetProperty, -1 /* 3 or 4 */, 1) \ 234 F(DefineOrRedefineDataProperty, 4, 1) \ 235 F(DefineOrRedefineAccessorProperty, 5, 1) \ 236 F(IgnoreAttributesAndSetProperty, -1 /* 3 or 4 */, 1) \ 237 \ 238 /* Arrays */ \ 239 F(RemoveArrayHoles, 2, 1) \ 240 F(GetArrayKeys, 2, 1) \ 241 F(MoveArrayContents, 2, 1) \ 242 F(EstimateNumberOfElements, 1, 1) \ 243 F(SwapElements, 3, 1) \ 244 \ 245 /* Getters and Setters */ \ 246 F(DefineAccessor, -1 /* 4 or 5 */, 1) \ 247 F(LookupAccessor, 3, 1) \ 248 \ 249 /* Literals */ \ 250 F(MaterializeRegExpLiteral, 4, 1)\ 251 F(CreateArrayLiteralBoilerplate, 3, 1) \ 252 F(CloneLiteralBoilerplate, 1, 1) \ 253 F(CloneShallowLiteralBoilerplate, 1, 1) \ 254 F(CreateObjectLiteral, 4, 1) \ 255 F(CreateObjectLiteralShallow, 4, 1) \ 256 F(CreateArrayLiteral, 3, 1) \ 257 F(CreateArrayLiteralShallow, 3, 1) \ 258 \ 259 /* Catch context extension objects */ \ 260 F(CreateCatchExtensionObject, 2, 1) \ 261 \ 262 /* Statements */ \ 263 F(NewClosure, 2, 1) \ 264 F(NewObject, 1, 1) \ 265 F(NewObjectFromBound, 2, 1) \ 266 F(FinalizeInstanceSize, 1, 1) \ 267 F(Throw, 1, 1) \ 268 F(ReThrow, 1, 1) \ 269 F(ThrowReferenceError, 1, 1) \ 270 F(StackGuard, 1, 1) \ 271 F(PromoteScheduledException, 0, 1) \ 272 \ 273 /* Contexts */ \ 274 F(NewContext, 1, 1) \ 275 F(PushContext, 1, 1) \ 276 F(PushCatchContext, 1, 1) \ 277 F(LookupContext, 2, 1) \ 278 F(LoadContextSlot, 2, 2) \ 279 F(LoadContextSlotNoReferenceError, 2, 2) \ 280 F(StoreContextSlot, 3, 1) \ 281 \ 282 /* Declarations and initialization */ \ 283 F(DeclareGlobals, 3, 1) \ 284 F(DeclareContextSlot, 4, 1) \ 285 F(InitializeVarGlobal, -1 /* 1 or 2 */, 1) \ 286 F(InitializeConstGlobal, 2, 1) \ 287 F(InitializeConstContextSlot, 3, 1) \ 288 F(OptimizeObjectForAddingMultipleProperties, 2, 1) \ 289 \ 290 /* Debugging */ \ 291 F(DebugPrint, 1, 1) \ 292 F(DebugTrace, 0, 1) \ 293 F(TraceEnter, 0, 1) \ 294 F(TraceExit, 1, 1) \ 295 F(Abort, 2, 1) \ 296 /* Logging */ \ 297 F(Log, 2, 1) \ 298 /* ES5 */ \ 299 F(LocalKeys, 1, 1) \ 300 /* Handle scopes */ \ 301 F(DeleteHandleScopeExtensions, 0, 1) \ 302 /* Cache suport */ \ 303 F(GetFromCache, 2, 1) \ 304 \ 305 /* Pseudo functions - handled as macros by parser */ \ 306 F(IS_VAR, 1, 1) 307 308#ifdef ENABLE_DEBUGGER_SUPPORT 309#define RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F) \ 310 /* Debugger support*/ \ 311 F(DebugBreak, 0, 1) \ 312 F(SetDebugEventListener, 2, 1) \ 313 F(Break, 0, 1) \ 314 F(DebugGetPropertyDetails, 2, 1) \ 315 F(DebugGetProperty, 2, 1) \ 316 F(DebugPropertyTypeFromDetails, 1, 1) \ 317 F(DebugPropertyAttributesFromDetails, 1, 1) \ 318 F(DebugPropertyIndexFromDetails, 1, 1) \ 319 F(DebugNamedInterceptorPropertyValue, 2, 1) \ 320 F(DebugIndexedInterceptorElementValue, 2, 1) \ 321 F(CheckExecutionState, 1, 1) \ 322 F(GetFrameCount, 1, 1) \ 323 F(GetFrameDetails, 2, 1) \ 324 F(GetScopeCount, 2, 1) \ 325 F(GetScopeDetails, 3, 1) \ 326 F(DebugPrintScopes, 0, 1) \ 327 F(GetCFrames, 1, 1) \ 328 F(GetThreadCount, 1, 1) \ 329 F(GetThreadDetails, 2, 1) \ 330 F(SetDisableBreak, 1, 1) \ 331 F(GetBreakLocations, 1, 1) \ 332 F(SetFunctionBreakPoint, 3, 1) \ 333 F(SetScriptBreakPoint, 3, 1) \ 334 F(ClearBreakPoint, 1, 1) \ 335 F(ChangeBreakOnException, 2, 1) \ 336 F(IsBreakOnException, 1, 1) \ 337 F(PrepareStep, 3, 1) \ 338 F(ClearStepping, 0, 1) \ 339 F(DebugEvaluate, 4, 1) \ 340 F(DebugEvaluateGlobal, 3, 1) \ 341 F(DebugGetLoadedScripts, 0, 1) \ 342 F(DebugReferencedBy, 3, 1) \ 343 F(DebugConstructedBy, 2, 1) \ 344 F(DebugGetPrototype, 1, 1) \ 345 F(SystemBreak, 0, 1) \ 346 F(DebugDisassembleFunction, 1, 1) \ 347 F(DebugDisassembleConstructor, 1, 1) \ 348 F(FunctionGetInferredName, 1, 1) \ 349 F(LiveEditFindSharedFunctionInfosForScript, 1, 1) \ 350 F(LiveEditGatherCompileInfo, 2, 1) \ 351 F(LiveEditReplaceScript, 3, 1) \ 352 F(LiveEditReplaceFunctionCode, 2, 1) \ 353 F(LiveEditFunctionSetScript, 2, 1) \ 354 F(LiveEditReplaceRefToNestedFunction, 3, 1) \ 355 F(LiveEditPatchFunctionPositions, 2, 1) \ 356 F(LiveEditCheckAndDropActivations, 2, 1) \ 357 F(LiveEditCompareStringsLinewise, 2, 1) \ 358 F(GetFunctionCodePositionFromSource, 2, 1) \ 359 F(ExecuteInDebugContext, 2, 1) 360#else 361#define RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F) 362#endif 363 364#ifdef ENABLE_LOGGING_AND_PROFILING 365#define RUNTIME_FUNCTION_LIST_PROFILER_SUPPORT(F) \ 366 F(ProfilerResume, 2, 1) \ 367 F(ProfilerPause, 2, 1) 368#else 369#define RUNTIME_FUNCTION_LIST_PROFILER_SUPPORT(F) 370#endif 371 372#ifdef DEBUG 373#define RUNTIME_FUNCTION_LIST_DEBUG(F) \ 374 /* Testing */ \ 375 F(ListNatives, 0, 1) 376#else 377#define RUNTIME_FUNCTION_LIST_DEBUG(F) 378#endif 379 380 381// ---------------------------------------------------------------------------- 382// RUNTIME_FUNCTION_LIST defines all runtime functions accessed 383// either directly by id (via the code generator), or indirectly 384// via a native call by name (from within JS code). 385 386#define RUNTIME_FUNCTION_LIST(F) \ 387 RUNTIME_FUNCTION_LIST_ALWAYS_1(F) \ 388 RUNTIME_FUNCTION_LIST_ALWAYS_2(F) \ 389 RUNTIME_FUNCTION_LIST_DEBUG(F) \ 390 RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F) \ 391 RUNTIME_FUNCTION_LIST_PROFILER_SUPPORT(F) 392 393// ---------------------------------------------------------------------------- 394// INLINE_FUNCTION_LIST defines all inlined functions accessed 395// with a native call of the form %_name from within JS code. 396// Entries have the form F(name, number of arguments, number of return values). 397#define INLINE_FUNCTION_LIST(F) \ 398 F(IsSmi, 1, 1) \ 399 F(IsNonNegativeSmi, 1, 1) \ 400 F(IsArray, 1, 1) \ 401 F(IsRegExp, 1, 1) \ 402 F(CallFunction, -1 /* receiver + n args + function */, 1) \ 403 F(ArgumentsLength, 0, 1) \ 404 F(Arguments, 1, 1) \ 405 F(ValueOf, 1, 1) \ 406 F(SetValueOf, 2, 1) \ 407 F(StringCharFromCode, 1, 1) \ 408 F(StringCharAt, 2, 1) \ 409 F(ObjectEquals, 2, 1) \ 410 F(RandomHeapNumber, 0, 1) \ 411 F(IsObject, 1, 1) \ 412 F(IsFunction, 1, 1) \ 413 F(IsUndetectableObject, 1, 1) \ 414 F(IsSpecObject, 1, 1) \ 415 F(IsStringWrapperSafeForDefaultValueOf, 1, 1) \ 416 F(MathPow, 2, 1) \ 417 F(MathSin, 1, 1) \ 418 F(MathCos, 1, 1) \ 419 F(MathSqrt, 1, 1) \ 420 F(IsRegExpEquivalent, 2, 1) \ 421 F(HasCachedArrayIndex, 1, 1) \ 422 F(GetCachedArrayIndex, 1, 1) 423 424 425// ---------------------------------------------------------------------------- 426// INLINE_AND_RUNTIME_FUNCTION_LIST defines all inlined functions accessed 427// with a native call of the form %_name from within JS code that also have 428 // a corresponding runtime function, that is called for slow cases. 429// Entries have the form F(name, number of arguments, number of return values). 430#define INLINE_RUNTIME_FUNCTION_LIST(F) \ 431 F(IsConstructCall, 0, 1) \ 432 F(ClassOf, 1, 1) \ 433 F(StringCharCodeAt, 2, 1) \ 434 F(Log, 3, 1) \ 435 F(StringAdd, 2, 1) \ 436 F(SubString, 3, 1) \ 437 F(StringCompare, 2, 1) \ 438 F(RegExpExec, 4, 1) \ 439 F(RegExpConstructResult, 3, 1) \ 440 F(RegExpCloneResult, 1, 1) \ 441 F(GetFromCache, 2, 1) \ 442 F(NumberToString, 1, 1) \ 443 F(SwapElements, 3, 1) 444 445 446//--------------------------------------------------------------------------- 447// Runtime provides access to all C++ runtime functions. 448 449class Runtime : public AllStatic { 450 public: 451 enum FunctionId { 452#define F(name, nargs, ressize) k##name, 453 RUNTIME_FUNCTION_LIST(F) 454#undef F 455#define F(name, nargs, ressize) kInline##name, 456 INLINE_FUNCTION_LIST(F) 457 INLINE_RUNTIME_FUNCTION_LIST(F) 458#undef F 459 kNumFunctions, 460 kFirstInlineFunction = kInlineIsSmi 461 }; 462 463 enum IntrinsicType { 464 RUNTIME, 465 INLINE 466 }; 467 468 // Intrinsic function descriptor. 469 struct Function { 470 FunctionId function_id; 471 IntrinsicType intrinsic_type; 472 // The JS name of the function. 473 const char* name; 474 475 // The C++ (native) entry point. NULL if the function is inlined. 476 byte* entry; 477 478 // The number of arguments expected. nargs is -1 if the function takes 479 // a variable number of arguments. 480 int nargs; 481 // Size of result. Most functions return a single pointer, size 1. 482 int result_size; 483 }; 484 485 static const int kNotFound = -1; 486 487 // Add symbols for all the intrinsic function names to a StringDictionary. 488 // Returns failure if an allocation fails. In this case, it must be 489 // retried with a new, empty StringDictionary, not with the same one. 490 // Alternatively, heap initialization can be completely restarted. 491 static Object* InitializeIntrinsicFunctionNames(Object* dictionary); 492 493 // Get the intrinsic function with the given name, which must be a symbol. 494 static Function* FunctionForSymbol(Handle<String> name); 495 496 // Get the intrinsic function with the given FunctionId. 497 static Function* FunctionForId(FunctionId id); 498 499 // General-purpose helper functions for runtime system. 500 static int StringMatch(Handle<String> sub, Handle<String> pat, int index); 501 502 static bool IsUpperCaseChar(uint16_t ch); 503 504 // TODO(1240886): The following three methods are *not* handle safe, 505 // but accept handle arguments. This seems fragile. 506 507 // Support getting the characters in a string using [] notation as 508 // in Firefox/SpiderMonkey, Safari and Opera. 509 static Object* GetElementOrCharAt(Handle<Object> object, uint32_t index); 510 static Object* GetElement(Handle<Object> object, uint32_t index); 511 512 static Object* SetObjectProperty(Handle<Object> object, 513 Handle<Object> key, 514 Handle<Object> value, 515 PropertyAttributes attr); 516 517 static Object* ForceSetObjectProperty(Handle<JSObject> object, 518 Handle<Object> key, 519 Handle<Object> value, 520 PropertyAttributes attr); 521 522 static Object* ForceDeleteObjectProperty(Handle<JSObject> object, 523 Handle<Object> key); 524 525 static Object* GetObjectProperty(Handle<Object> object, Handle<Object> key); 526 527 // This function is used in FunctionNameUsing* tests. 528 static Object* FindSharedFunctionInfoInScript(Handle<Script> script, 529 int position); 530 531 // Helper functions used stubs. 532 static void PerformGC(Object* result); 533}; 534 535 536} } // namespace v8::internal 537 538#endif // V8_RUNTIME_H_ 539