runtime.h revision 589d6979ff2ef66fca2d8fa51404c369ca5e9250 
1// Copyright 2011 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
31#include "allocation.h"
32#include "zone.h"
33
34namespace v8 {
35namespace internal {
36
37// The interface to C++ runtime functions.
38
39// ----------------------------------------------------------------------------
40// RUNTIME_FUNCTION_LIST_ALWAYS defines runtime calls available in both
41// release and debug mode.
42// This macro should only be used by the macro RUNTIME_FUNCTION_LIST.
43
44// WARNING: RUNTIME_FUNCTION_LIST_ALWAYS_* is a very large macro that caused
45// MSVC Intellisense to crash.  It was broken into two macros to work around
46// this problem. Please avoid large recursive macros whenever possible.
47#define RUNTIME_FUNCTION_LIST_ALWAYS_1(F) \
48  /* Property access */ \
49  F(GetProperty, 2, 1) \
50  F(KeyedGetProperty, 2, 1) \
51  F(DeleteProperty, 3, 1) \
52  F(HasLocalProperty, 2, 1) \
53  F(HasProperty, 2, 1) \
54  F(HasElement, 2, 1) \
55  F(IsPropertyEnumerable, 2, 1) \
56  F(GetPropertyNames, 1, 1) \
57  F(GetPropertyNamesFast, 1, 1) \
58  F(GetLocalPropertyNames, 1, 1) \
59  F(GetLocalElementNames, 1, 1) \
60  F(GetInterceptorInfo, 1, 1) \
61  F(GetNamedInterceptorPropertyNames, 1, 1) \
62  F(GetIndexedInterceptorElementNames, 1, 1) \
63  F(GetArgumentsProperty, 1, 1) \
64  F(ToFastProperties, 1, 1) \
65  F(ToSlowProperties, 1, 1) \
66  F(FinishArrayPrototypeSetup, 1, 1) \
67  F(SpecialArrayFunctions, 1, 1) \
68  F(GetDefaultReceiver, 1, 1) \
69  \
70  F(GetPrototype, 1, 1) \
71  F(IsInPrototypeChain, 2, 1) \
72  F(SetHiddenPrototype, 2, 1) \
73  \
74  F(IsConstructCall, 0, 1) \
75  \
76  F(GetOwnProperty, 2, 1) \
77  \
78  F(IsExtensible, 1, 1) \
79  F(PreventExtensions, 1, 1)\
80  \
81  /* Utilities */ \
82  F(CheckIsBootstrapping, 0, 1) \
83  F(Apply, 5, 1) \
84  F(GetFunctionDelegate, 1, 1) \
85  F(GetConstructorDelegate, 1, 1) \
86  F(NewArgumentsFast, 3, 1) \
87  F(NewStrictArgumentsFast, 3, 1) \
88  F(LazyCompile, 1, 1) \
89  F(LazyRecompile, 1, 1) \
90  F(NotifyDeoptimized, 1, 1) \
91  F(NotifyOSR, 0, 1) \
92  F(DeoptimizeFunction, 1, 1) \
93  F(RunningInSimulator, 0, 1) \
94  F(OptimizeFunctionOnNextCall, 1, 1) \
95  F(GetOptimizationStatus, 1, 1) \
96  F(GetOptimizationCount, 1, 1) \
97  F(CompileForOnStackReplacement, 1, 1) \
98  F(SetNewFunctionAttributes, 1, 1) \
99  F(AllocateInNewSpace, 1, 1) \
100  F(SetNativeFlag, 1, 1) \
101  \
102  /* Array join support */ \
103  F(PushIfAbsent, 2, 1) \
104  F(ArrayConcat, 1, 1) \
105  \
106  /* Conversions */ \
107  F(ToBool, 1, 1) \
108  F(Typeof, 1, 1) \
109  \
110  F(StringToNumber, 1, 1) \
111  F(StringFromCharCodeArray, 1, 1) \
112  F(StringParseInt, 2, 1) \
113  F(StringParseFloat, 1, 1) \
114  F(StringToLowerCase, 1, 1) \
115  F(StringToUpperCase, 1, 1) \
116  F(StringSplit, 3, 1) \
117  F(CharFromCode, 1, 1) \
118  F(URIEscape, 1, 1) \
119  F(URIUnescape, 1, 1) \
120  F(QuoteJSONString, 1, 1) \
121  F(QuoteJSONStringComma, 1, 1) \
122  F(QuoteJSONStringArray, 1, 1) \
123  \
124  F(NumberToString, 1, 1) \
125  F(NumberToStringSkipCache, 1, 1) \
126  F(NumberToInteger, 1, 1) \
127  F(NumberToIntegerMapMinusZero, 1, 1) \
128  F(NumberToJSUint32, 1, 1) \
129  F(NumberToJSInt32, 1, 1) \
130  F(NumberToSmi, 1, 1) \
131  F(AllocateHeapNumber, 0, 1) \
132  \
133  /* Arithmetic operations */ \
134  F(NumberAdd, 2, 1) \
135  F(NumberSub, 2, 1) \
136  F(NumberMul, 2, 1) \
137  F(NumberDiv, 2, 1) \
138  F(NumberMod, 2, 1) \
139  F(NumberUnaryMinus, 1, 1) \
140  F(NumberAlloc, 0, 1) \
141  \
142  F(StringAdd, 2, 1) \
143  F(StringBuilderConcat, 3, 1) \
144  F(StringBuilderJoin, 3, 1) \
145  F(SparseJoinWithSeparator, 3, 1)            \
146  \
147  /* Bit operations */ \
148  F(NumberOr, 2, 1) \
149  F(NumberAnd, 2, 1) \
150  F(NumberXor, 2, 1) \
151  F(NumberNot, 1, 1) \
152  \
153  F(NumberShl, 2, 1) \
154  F(NumberShr, 2, 1) \
155  F(NumberSar, 2, 1) \
156  \
157  /* Comparisons */ \
158  F(NumberEquals, 2, 1) \
159  F(StringEquals, 2, 1) \
160  \
161  F(NumberCompare, 3, 1) \
162  F(SmiLexicographicCompare, 2, 1) \
163  F(StringCompare, 2, 1) \
164  \
165  /* Math */ \
166  F(Math_acos, 1, 1) \
167  F(Math_asin, 1, 1) \
168  F(Math_atan, 1, 1) \
169  F(Math_atan2, 2, 1) \
170  F(Math_ceil, 1, 1) \
171  F(Math_cos, 1, 1) \
172  F(Math_exp, 1, 1) \
173  F(Math_floor, 1, 1) \
174  F(Math_log, 1, 1) \
175  F(Math_pow, 2, 1) \
176  F(Math_pow_cfunction, 2, 1) \
177  F(RoundNumber, 1, 1) \
178  F(Math_sin, 1, 1) \
179  F(Math_sqrt, 1, 1) \
180  F(Math_tan, 1, 1) \
181  \
182  /* Regular expressions */ \
183  F(RegExpCompile, 3, 1) \
184  F(RegExpExec, 4, 1) \
185  F(RegExpExecMultiple, 4, 1) \
186  F(RegExpInitializeObject, 5, 1) \
187  F(RegExpConstructResult, 3, 1) \
188  \
189  /* JSON */ \
190  F(ParseJson, 1, 1) \
191  \
192  /* Strings */ \
193  F(StringCharCodeAt, 2, 1) \
194  F(StringIndexOf, 3, 1) \
195  F(StringLastIndexOf, 3, 1) \
196  F(StringLocaleCompare, 2, 1) \
197  F(SubString, 3, 1) \
198  F(StringReplaceRegExpWithString, 4, 1) \
199  F(StringMatch, 3, 1) \
200  F(StringTrim, 3, 1) \
201  F(StringToArray, 2, 1) \
202  F(NewStringWrapper, 1, 1) \
203  \
204  /* Numbers */ \
205  F(NumberToRadixString, 2, 1) \
206  F(NumberToFixed, 2, 1) \
207  F(NumberToExponential, 2, 1) \
208  F(NumberToPrecision, 2, 1)
209
210#define RUNTIME_FUNCTION_LIST_ALWAYS_2(F) \
211  /* Reflection */ \
212  F(FunctionSetInstanceClassName, 2, 1) \
213  F(FunctionSetLength, 2, 1) \
214  F(BoundFunctionSetLength, 2, 1)    \
215  F(FunctionSetPrototype, 2, 1) \
216  F(FunctionSetReadOnlyPrototype, 1, 1) \
217  F(FunctionGetName, 1, 1) \
218  F(FunctionSetName, 2, 1) \
219  F(FunctionNameShouldPrintAsAnonymous, 1, 1) \
220  F(FunctionMarkNameShouldPrintAsAnonymous, 1, 1) \
221  F(FunctionSetBound, 1, 1) \
222  F(FunctionRemovePrototype, 1, 1) \
223  F(FunctionGetSourceCode, 1, 1) \
224  F(FunctionGetScript, 1, 1) \
225  F(FunctionGetScriptSourcePosition, 1, 1) \
226  F(FunctionGetPositionForOffset, 2, 1) \
227  F(FunctionIsAPIFunction, 1, 1) \
228  F(FunctionIsBuiltin, 1, 1) \
229  F(GetScript, 1, 1) \
230  F(CollectStackTrace, 2, 1) \
231  F(GetV8Version, 0, 1) \
232  \
233  F(ClassOf, 1, 1) \
234  F(SetCode, 2, 1) \
235  F(SetExpectedNumberOfProperties, 2, 1) \
236  \
237  F(CreateApiFunction, 1, 1) \
238  F(IsTemplate, 1, 1) \
239  F(GetTemplateField, 2, 1) \
240  F(DisableAccessChecks, 1, 1) \
241  F(EnableAccessChecks, 1, 1) \
242  \
243  /* Dates */ \
244  F(DateCurrentTime, 0, 1) \
245  F(DateParseString, 2, 1) \
246  F(DateLocalTimezone, 1, 1) \
247  F(DateLocalTimeOffset, 0, 1) \
248  F(DateDaylightSavingsOffset, 1, 1) \
249  F(DateMakeDay, 3, 1) \
250  F(DateYMDFromTime, 2, 1) \
251  \
252  /* Numbers */ \
253  \
254  /* Globals */ \
255  F(CompileString, 1, 1) \
256  F(GlobalPrint, 1, 1) \
257  \
258  /* Eval */ \
259  F(GlobalReceiver, 1, 1) \
260  F(ResolvePossiblyDirectEval, 4, 2) \
261  F(ResolvePossiblyDirectEvalNoLookup, 4, 2) \
262  \
263  F(SetProperty, -1 /* 4 or 5 */, 1) \
264  F(DefineOrRedefineDataProperty, 4, 1) \
265  F(DefineOrRedefineAccessorProperty, 5, 1) \
266  F(IgnoreAttributesAndSetProperty, -1 /* 3 or 4 */, 1) \
267  \
268  /* Arrays */ \
269  F(RemoveArrayHoles, 2, 1) \
270  F(GetArrayKeys, 2, 1) \
271  F(MoveArrayContents, 2, 1) \
272  F(EstimateNumberOfElements, 1, 1) \
273  F(SwapElements, 3, 1) \
274  \
275  /* Getters and Setters */ \
276  F(DefineAccessor, -1 /* 4 or 5 */, 1) \
277  F(LookupAccessor, 3, 1) \
278  \
279  /* Literals */ \
280  F(MaterializeRegExpLiteral, 4, 1)\
281  F(CreateArrayLiteralBoilerplate, 3, 1) \
282  F(CloneLiteralBoilerplate, 1, 1) \
283  F(CloneShallowLiteralBoilerplate, 1, 1) \
284  F(CreateObjectLiteral, 4, 1) \
285  F(CreateObjectLiteralShallow, 4, 1) \
286  F(CreateArrayLiteral, 3, 1) \
287  F(CreateArrayLiteralShallow, 3, 1) \
288  \
289  /* Harmony proxies */ \
290  F(CreateJSProxy, 2, 1) \
291  F(CreateJSFunctionProxy, 4, 1) \
292  F(IsJSProxy, 1, 1) \
293  F(IsJSFunctionProxy, 1, 1) \
294  F(GetHandler, 1, 1) \
295  F(GetCallTrap, 1, 1) \
296  F(GetConstructTrap, 1, 1) \
297  F(Fix, 1, 1) \
298  \
299  /* Harmony weakmaps */ \
300  F(WeakMapInitialize, 1, 1) \
301  F(WeakMapGet, 2, 1) \
302  F(WeakMapSet, 3, 1) \
303  \
304  /* Statements */ \
305  F(NewClosure, 3, 1) \
306  F(NewObject, 1, 1) \
307  F(NewObjectFromBound, 2, 1) \
308  F(FinalizeInstanceSize, 1, 1) \
309  F(Throw, 1, 1) \
310  F(ReThrow, 1, 1) \
311  F(ThrowReferenceError, 1, 1) \
312  F(StackGuard, 0, 1) \
313  F(PromoteScheduledException, 0, 1) \
314  \
315  /* Contexts */ \
316  F(NewFunctionContext, 1, 1) \
317  F(PushWithContext, 2, 1) \
318  F(PushCatchContext, 3, 1) \
319  F(PushBlockContext, 2, 1) \
320  F(DeleteContextSlot, 2, 1) \
321  F(LoadContextSlot, 2, 2) \
322  F(LoadContextSlotNoReferenceError, 2, 2) \
323  F(StoreContextSlot, 4, 1) \
324  \
325  /* Declarations and initialization */ \
326  F(DeclareGlobals, 3, 1) \
327  F(DeclareContextSlot, 4, 1) \
328  F(InitializeVarGlobal, -1 /* 2 or 3 */, 1) \
329  F(InitializeConstGlobal, 2, 1) \
330  F(InitializeConstContextSlot, 3, 1) \
331  F(OptimizeObjectForAddingMultipleProperties, 2, 1) \
332  \
333  /* Debugging */ \
334  F(DebugPrint, 1, 1) \
335  F(DebugTrace, 0, 1) \
336  F(TraceEnter, 0, 1) \
337  F(TraceExit, 1, 1) \
338  F(Abort, 2, 1) \
339  /* Logging */ \
340  F(Log, 2, 1) \
341  /* ES5 */ \
342  F(LocalKeys, 1, 1) \
343  /* Cache suport */ \
344  F(GetFromCache, 2, 1) \
345  \
346  /* Message objects */ \
347  F(NewMessageObject, 2, 1) \
348  F(MessageGetType, 1, 1) \
349  F(MessageGetArguments, 1, 1) \
350  F(MessageGetStartPosition, 1, 1) \
351  F(MessageGetScript, 1, 1) \
352  \
353  /* Pseudo functions - handled as macros by parser */ \
354  F(IS_VAR, 1, 1) \
355  \
356  /* expose boolean functions from objects-inl.h */ \
357  F(HasFastElements, 1, 1) \
358  F(HasFastDoubleElements, 1, 1) \
359  F(HasDictionaryElements, 1, 1) \
360  F(HasExternalPixelElements, 1, 1) \
361  F(HasExternalArrayElements, 1, 1) \
362  F(HasExternalByteElements, 1, 1) \
363  F(HasExternalUnsignedByteElements, 1, 1) \
364  F(HasExternalShortElements, 1, 1) \
365  F(HasExternalUnsignedShortElements, 1, 1) \
366  F(HasExternalIntElements, 1, 1) \
367  F(HasExternalUnsignedIntElements, 1, 1) \
368  F(HasExternalFloatElements, 1, 1) \
369  F(HasExternalDoubleElements, 1, 1) \
370  /* profiler */ \
371  F(ProfilerResume, 0, 1) \
372  F(ProfilerPause, 0, 1)
373
374
375#ifdef ENABLE_DEBUGGER_SUPPORT
376#define RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F) \
377  /* Debugger support*/ \
378  F(DebugBreak, 0, 1) \
379  F(SetDebugEventListener, 2, 1) \
380  F(Break, 0, 1) \
381  F(DebugGetPropertyDetails, 2, 1) \
382  F(DebugGetProperty, 2, 1) \
383  F(DebugPropertyTypeFromDetails, 1, 1) \
384  F(DebugPropertyAttributesFromDetails, 1, 1) \
385  F(DebugPropertyIndexFromDetails, 1, 1) \
386  F(DebugNamedInterceptorPropertyValue, 2, 1) \
387  F(DebugIndexedInterceptorElementValue, 2, 1) \
388  F(CheckExecutionState, 1, 1) \
389  F(GetFrameCount, 1, 1) \
390  F(GetFrameDetails, 2, 1) \
391  F(GetScopeCount, 2, 1) \
392  F(GetScopeDetails, 4, 1) \
393  F(DebugPrintScopes, 0, 1) \
394  F(GetThreadCount, 1, 1) \
395  F(GetThreadDetails, 2, 1) \
396  F(SetDisableBreak, 1, 1) \
397  F(GetBreakLocations, 1, 1) \
398  F(SetFunctionBreakPoint, 3, 1) \
399  F(SetScriptBreakPoint, 3, 1) \
400  F(ClearBreakPoint, 1, 1) \
401  F(ChangeBreakOnException, 2, 1) \
402  F(IsBreakOnException, 1, 1) \
403  F(PrepareStep, 3, 1) \
404  F(ClearStepping, 0, 1) \
405  F(DebugEvaluate, 6, 1) \
406  F(DebugEvaluateGlobal, 4, 1) \
407  F(DebugGetLoadedScripts, 0, 1) \
408  F(DebugReferencedBy, 3, 1) \
409  F(DebugConstructedBy, 2, 1) \
410  F(DebugGetPrototype, 1, 1) \
411  F(SystemBreak, 0, 1) \
412  F(DebugDisassembleFunction, 1, 1) \
413  F(DebugDisassembleConstructor, 1, 1) \
414  F(FunctionGetInferredName, 1, 1) \
415  F(LiveEditFindSharedFunctionInfosForScript, 1, 1) \
416  F(LiveEditGatherCompileInfo, 2, 1) \
417  F(LiveEditReplaceScript, 3, 1) \
418  F(LiveEditReplaceFunctionCode, 2, 1) \
419  F(LiveEditFunctionSourceUpdated, 1, 1) \
420  F(LiveEditFunctionSetScript, 2, 1) \
421  F(LiveEditReplaceRefToNestedFunction, 3, 1) \
422  F(LiveEditPatchFunctionPositions, 2, 1) \
423  F(LiveEditCheckAndDropActivations, 2, 1) \
424  F(LiveEditCompareStrings, 2, 1) \
425  F(GetFunctionCodePositionFromSource, 2, 1) \
426  F(ExecuteInDebugContext, 2, 1) \
427  \
428  F(SetFlags, 1, 1) \
429  F(CollectGarbage, 1, 1) \
430  F(GetHeapUsage, 0, 1) \
431  \
432  /* LiveObjectList support*/ \
433  F(HasLOLEnabled, 0, 1) \
434  F(CaptureLOL, 0, 1) \
435  F(DeleteLOL, 1, 1) \
436  F(DumpLOL, 5, 1) \
437  F(GetLOLObj, 1, 1) \
438  F(GetLOLObjId, 1, 1) \
439  F(GetLOLObjRetainers, 6, 1) \
440  F(GetLOLPath, 3, 1) \
441  F(InfoLOL, 2, 1) \
442  F(PrintLOLObj, 1, 1) \
443  F(ResetLOL, 0, 1) \
444  F(SummarizeLOL, 3, 1)
445
446#else
447#define RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F)
448#endif
449
450#ifdef DEBUG
451#define RUNTIME_FUNCTION_LIST_DEBUG(F) \
452  /* Testing */ \
453  F(ListNatives, 0, 1)
454#else
455#define RUNTIME_FUNCTION_LIST_DEBUG(F)
456#endif
457
458// ----------------------------------------------------------------------------
459// RUNTIME_FUNCTION_LIST defines all runtime functions accessed
460// either directly by id (via the code generator), or indirectly
461// via a native call by name (from within JS code).
462
463#define RUNTIME_FUNCTION_LIST(F) \
464  RUNTIME_FUNCTION_LIST_ALWAYS_1(F) \
465  RUNTIME_FUNCTION_LIST_ALWAYS_2(F) \
466  RUNTIME_FUNCTION_LIST_DEBUG(F) \
467  RUNTIME_FUNCTION_LIST_DEBUGGER_SUPPORT(F)
468
469// ----------------------------------------------------------------------------
470// INLINE_FUNCTION_LIST defines all inlined functions accessed
471// with a native call of the form %_name from within JS code.
472// Entries have the form F(name, number of arguments, number of return values).
473#define INLINE_FUNCTION_LIST(F) \
474  F(IsSmi, 1, 1)                                                             \
475  F(IsNonNegativeSmi, 1, 1)                                                  \
476  F(IsArray, 1, 1)                                                           \
477  F(IsRegExp, 1, 1)                                                          \
478  F(CallFunction, -1 /* receiver + n args + function */, 1)                  \
479  F(ArgumentsLength, 0, 1)                                                   \
480  F(Arguments, 1, 1)                                                         \
481  F(ValueOf, 1, 1)                                                           \
482  F(SetValueOf, 2, 1)                                                        \
483  F(StringCharFromCode, 1, 1)                                                \
484  F(StringCharAt, 2, 1)                                                      \
485  F(ObjectEquals, 2, 1)                                                      \
486  F(RandomHeapNumber, 0, 1)                                                  \
487  F(IsObject, 1, 1)                                                          \
488  F(IsFunction, 1, 1)                                                        \
489  F(IsUndetectableObject, 1, 1)                                              \
490  F(IsSpecObject, 1, 1)                                                      \
491  F(IsStringWrapperSafeForDefaultValueOf, 1, 1)                              \
492  F(MathPow, 2, 1)                                                           \
493  F(MathSin, 1, 1)                                                           \
494  F(MathCos, 1, 1)                                                           \
495  F(MathSqrt, 1, 1)                                                          \
496  F(MathLog, 1, 1)                                                           \
497  F(IsRegExpEquivalent, 2, 1)                                                \
498  F(HasCachedArrayIndex, 1, 1)                                               \
499  F(GetCachedArrayIndex, 1, 1)                                               \
500  F(FastAsciiArrayJoin, 2, 1)
501
502
503// ----------------------------------------------------------------------------
504// INLINE_AND_RUNTIME_FUNCTION_LIST defines all inlined functions accessed
505// with a native call of the form %_name from within JS code that also have
506// a corresponding runtime function, that is called for slow cases.
507// Entries have the form F(name, number of arguments, number of return values).
508#define INLINE_RUNTIME_FUNCTION_LIST(F) \
509  F(IsConstructCall, 0, 1)                                                   \
510  F(ClassOf, 1, 1)                                                           \
511  F(StringCharCodeAt, 2, 1)                                                  \
512  F(Log, 3, 1)                                                               \
513  F(StringAdd, 2, 1)                                                         \
514  F(SubString, 3, 1)                                                         \
515  F(StringCompare, 2, 1)                                                     \
516  F(RegExpExec, 4, 1)                                                        \
517  F(RegExpConstructResult, 3, 1)                                             \
518  F(GetFromCache, 2, 1)                                                      \
519  F(NumberToString, 1, 1)                                                    \
520  F(SwapElements, 3, 1)
521
522
523//---------------------------------------------------------------------------
524// Runtime provides access to all C++ runtime functions.
525
526class RuntimeState {
527 public:
528  StaticResource<StringInputBuffer>* string_input_buffer() {
529    return &string_input_buffer_;
530  }
531  unibrow::Mapping<unibrow::ToUppercase, 128>* to_upper_mapping() {
532    return &to_upper_mapping_;
533  }
534  unibrow::Mapping<unibrow::ToLowercase, 128>* to_lower_mapping() {
535    return &to_lower_mapping_;
536  }
537  StringInputBuffer* string_input_buffer_compare_bufx() {
538    return &string_input_buffer_compare_bufx_;
539  }
540  StringInputBuffer* string_input_buffer_compare_bufy() {
541    return &string_input_buffer_compare_bufy_;
542  }
543  StringInputBuffer* string_locale_compare_buf1() {
544    return &string_locale_compare_buf1_;
545  }
546  StringInputBuffer* string_locale_compare_buf2() {
547    return &string_locale_compare_buf2_;
548  }
549
550 private:
551  RuntimeState() {}
552  // Non-reentrant string buffer for efficient general use in the runtime.
553  StaticResource<StringInputBuffer> string_input_buffer_;
554  unibrow::Mapping<unibrow::ToUppercase, 128> to_upper_mapping_;
555  unibrow::Mapping<unibrow::ToLowercase, 128> to_lower_mapping_;
556  StringInputBuffer string_input_buffer_compare_bufx_;
557  StringInputBuffer string_input_buffer_compare_bufy_;
558  StringInputBuffer string_locale_compare_buf1_;
559  StringInputBuffer string_locale_compare_buf2_;
560
561  friend class Isolate;
562  friend class Runtime;
563
564  DISALLOW_COPY_AND_ASSIGN(RuntimeState);
565};
566
567
568class Runtime : public AllStatic {
569 public:
570  enum FunctionId {
571#define F(name, nargs, ressize) k##name,
572    RUNTIME_FUNCTION_LIST(F)
573#undef F
574#define F(name, nargs, ressize) kInline##name,
575    INLINE_FUNCTION_LIST(F)
576    INLINE_RUNTIME_FUNCTION_LIST(F)
577#undef F
578    kNumFunctions,
579    kFirstInlineFunction = kInlineIsSmi
580  };
581
582  enum IntrinsicType {
583    RUNTIME,
584    INLINE
585  };
586
587  // Intrinsic function descriptor.
588  struct Function {
589    FunctionId function_id;
590    IntrinsicType intrinsic_type;
591    // The JS name of the function.
592    const char* name;
593
594    // The C++ (native) entry point.  NULL if the function is inlined.
595    byte* entry;
596
597    // The number of arguments expected. nargs is -1 if the function takes
598    // a variable number of arguments.
599    int nargs;
600    // Size of result.  Most functions return a single pointer, size 1.
601    int result_size;
602  };
603
604  static const int kNotFound = -1;
605
606  // Add symbols for all the intrinsic function names to a StringDictionary.
607  // Returns failure if an allocation fails.  In this case, it must be
608  // retried with a new, empty StringDictionary, not with the same one.
609  // Alternatively, heap initialization can be completely restarted.
610  MUST_USE_RESULT static MaybeObject* InitializeIntrinsicFunctionNames(
611      Heap* heap, Object* dictionary);
612
613  // Get the intrinsic function with the given name, which must be a symbol.
614  static const Function* FunctionForSymbol(Handle<String> name);
615
616  // Get the intrinsic function with the given FunctionId.
617  static const Function* FunctionForId(FunctionId id);
618
619  // General-purpose helper functions for runtime system.
620  static int StringMatch(Isolate* isolate,
621                         Handle<String> sub,
622                         Handle<String> pat,
623                         int index);
624
625  static bool IsUpperCaseChar(RuntimeState* runtime_state, uint16_t ch);
626
627  // TODO(1240886): The following three methods are *not* handle safe,
628  // but accept handle arguments. This seems fragile.
629
630  // Support getting the characters in a string using [] notation as
631  // in Firefox/SpiderMonkey, Safari and Opera.
632  MUST_USE_RESULT static MaybeObject* GetElementOrCharAt(Isolate* isolate,
633                                                         Handle<Object> object,
634                                                         uint32_t index);
635  MUST_USE_RESULT static MaybeObject* GetElement(Handle<Object> object,
636                                                 uint32_t index);
637
638  MUST_USE_RESULT static MaybeObject* SetObjectProperty(
639      Isolate* isolate,
640      Handle<Object> object,
641      Handle<Object> key,
642      Handle<Object> value,
643      PropertyAttributes attr,
644      StrictModeFlag strict_mode);
645
646  MUST_USE_RESULT static MaybeObject* ForceSetObjectProperty(
647      Isolate* isolate,
648      Handle<JSObject> object,
649      Handle<Object> key,
650      Handle<Object> value,
651      PropertyAttributes attr);
652
653  MUST_USE_RESULT static MaybeObject* ForceDeleteObjectProperty(
654      Isolate* isolate,
655      Handle<JSReceiver> object,
656      Handle<Object> key);
657
658  MUST_USE_RESULT static MaybeObject* GetObjectProperty(
659      Isolate* isolate,
660      Handle<Object> object,
661      Handle<Object> key);
662
663  // This function is used in FunctionNameUsing* tests.
664  static Object* FindSharedFunctionInfoInScript(Isolate* isolate,
665                                                Handle<Script> script,
666                                                int position);
667
668  // Helper functions used stubs.
669  static void PerformGC(Object* result);
670};
671
672
673//---------------------------------------------------------------------------
674// Constants used by interface to runtime functions.
675
676enum kDeclareGlobalsFlags {
677  kDeclareGlobalsEvalFlag = 1 << 0,
678  kDeclareGlobalsStrictModeFlag = 1 << 1,
679  kDeclareGlobalsNativeFlag = 1 << 2
680};
681
682} }  // namespace v8::internal
683
684#endif  // V8_RUNTIME_H_
685