1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
|
/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef JIT_h
#define JIT_h
#if ENABLE(JIT)
// We've run into some problems where changing the size of the class JIT leads to
// performance fluctuations. Try forcing alignment in an attempt to stabalize this.
#if COMPILER(GCC)
#define JIT_CLASS_ALIGNMENT __attribute__ ((aligned (32)))
#else
#define JIT_CLASS_ALIGNMENT
#endif
#define ASSERT_JIT_OFFSET(actual, expected) ASSERT_WITH_MESSAGE(actual == expected, "JIT Offset \"%s\" should be %d, not %d.\n", #expected, static_cast<int>(actual), static_cast<int>(expected));
#include "CodeBlock.h"
#include "Interpreter.h"
#include "JITCode.h"
#include "JITStubs.h"
#include "Opcode.h"
#include "RegisterFile.h"
#include "MacroAssembler.h"
#include "Profiler.h"
#include <bytecode/SamplingTool.h>
#include <wtf/AlwaysInline.h>
#include <wtf/Vector.h>
namespace JSC {
class CodeBlock;
class JIT;
class JSPropertyNameIterator;
class Interpreter;
class Register;
class RegisterFile;
class ScopeChainNode;
class StructureChain;
struct CallLinkInfo;
struct Instruction;
struct OperandTypes;
struct PolymorphicAccessStructureList;
struct SimpleJumpTable;
struct StringJumpTable;
struct StructureStubInfo;
struct CallRecord {
MacroAssembler::Call from;
unsigned bytecodeIndex;
void* to;
CallRecord()
{
}
CallRecord(MacroAssembler::Call from, unsigned bytecodeIndex, void* to = 0)
: from(from)
, bytecodeIndex(bytecodeIndex)
, to(to)
{
}
};
struct JumpTable {
MacroAssembler::Jump from;
unsigned toBytecodeIndex;
JumpTable(MacroAssembler::Jump f, unsigned t)
: from(f)
, toBytecodeIndex(t)
{
}
};
struct SlowCaseEntry {
MacroAssembler::Jump from;
unsigned to;
unsigned hint;
SlowCaseEntry(MacroAssembler::Jump f, unsigned t, unsigned h = 0)
: from(f)
, to(t)
, hint(h)
{
}
};
struct SwitchRecord {
enum Type {
Immediate,
Character,
String
};
Type type;
union {
SimpleJumpTable* simpleJumpTable;
StringJumpTable* stringJumpTable;
} jumpTable;
unsigned bytecodeIndex;
unsigned defaultOffset;
SwitchRecord(SimpleJumpTable* jumpTable, unsigned bytecodeIndex, unsigned defaultOffset, Type type)
: type(type)
, bytecodeIndex(bytecodeIndex)
, defaultOffset(defaultOffset)
{
this->jumpTable.simpleJumpTable = jumpTable;
}
SwitchRecord(StringJumpTable* jumpTable, unsigned bytecodeIndex, unsigned defaultOffset)
: type(String)
, bytecodeIndex(bytecodeIndex)
, defaultOffset(defaultOffset)
{
this->jumpTable.stringJumpTable = jumpTable;
}
};
struct PropertyStubCompilationInfo {
MacroAssembler::Call callReturnLocation;
MacroAssembler::Label hotPathBegin;
};
struct StructureStubCompilationInfo {
MacroAssembler::DataLabelPtr hotPathBegin;
MacroAssembler::Call hotPathOther;
MacroAssembler::Call callReturnLocation;
};
struct MethodCallCompilationInfo {
MethodCallCompilationInfo(unsigned propertyAccessIndex)
: propertyAccessIndex(propertyAccessIndex)
{
}
MacroAssembler::DataLabelPtr structureToCompare;
unsigned propertyAccessIndex;
};
// Near calls can only be patched to other JIT code, regular calls can be patched to JIT code or relinked to stub functions.
void ctiPatchNearCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction);
void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction);
void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, FunctionPtr newCalleeFunction);
class JIT : private MacroAssembler {
friend class JITStubCall;
using MacroAssembler::Jump;
using MacroAssembler::JumpList;
using MacroAssembler::Label;
// NOTES:
//
// regT0 has two special meanings. The return value from a stub
// call will always be in regT0, and by default (unless
// a register is specified) emitPutVirtualRegister() will store
// the value from regT0.
//
// regT3 is required to be callee-preserved.
//
// tempRegister2 is has no such dependencies. It is important that
// on x86/x86-64 it is ecx for performance reasons, since the
// MacroAssembler will need to plant register swaps if it is not -
// however the code will still function correctly.
#if CPU(X86_64)
static const RegisterID returnValueRegister = X86Registers::eax;
static const RegisterID cachedResultRegister = X86Registers::eax;
static const RegisterID firstArgumentRegister = X86Registers::edi;
static const RegisterID timeoutCheckRegister = X86Registers::r12;
static const RegisterID callFrameRegister = X86Registers::r13;
static const RegisterID tagTypeNumberRegister = X86Registers::r14;
static const RegisterID tagMaskRegister = X86Registers::r15;
static const RegisterID regT0 = X86Registers::eax;
static const RegisterID regT1 = X86Registers::edx;
static const RegisterID regT2 = X86Registers::ecx;
static const RegisterID regT3 = X86Registers::ebx;
static const FPRegisterID fpRegT0 = X86Registers::xmm0;
static const FPRegisterID fpRegT1 = X86Registers::xmm1;
static const FPRegisterID fpRegT2 = X86Registers::xmm2;
#elif CPU(X86)
static const RegisterID returnValueRegister = X86Registers::eax;
static const RegisterID cachedResultRegister = X86Registers::eax;
// On x86 we always use fastcall conventions = but on
// OS X if might make more sense to just use regparm.
static const RegisterID firstArgumentRegister = X86Registers::ecx;
static const RegisterID timeoutCheckRegister = X86Registers::esi;
static const RegisterID callFrameRegister = X86Registers::edi;
static const RegisterID regT0 = X86Registers::eax;
static const RegisterID regT1 = X86Registers::edx;
static const RegisterID regT2 = X86Registers::ecx;
static const RegisterID regT3 = X86Registers::ebx;
static const FPRegisterID fpRegT0 = X86Registers::xmm0;
static const FPRegisterID fpRegT1 = X86Registers::xmm1;
static const FPRegisterID fpRegT2 = X86Registers::xmm2;
#elif CPU(ARM_THUMB2)
static const RegisterID returnValueRegister = ARMRegisters::r0;
static const RegisterID cachedResultRegister = ARMRegisters::r0;
static const RegisterID firstArgumentRegister = ARMRegisters::r0;
static const RegisterID regT0 = ARMRegisters::r0;
static const RegisterID regT1 = ARMRegisters::r1;
static const RegisterID regT2 = ARMRegisters::r2;
static const RegisterID regT3 = ARMRegisters::r4;
static const RegisterID callFrameRegister = ARMRegisters::r5;
static const RegisterID timeoutCheckRegister = ARMRegisters::r6;
static const FPRegisterID fpRegT0 = ARMRegisters::d0;
static const FPRegisterID fpRegT1 = ARMRegisters::d1;
static const FPRegisterID fpRegT2 = ARMRegisters::d2;
#elif CPU(ARM_TRADITIONAL)
static const RegisterID returnValueRegister = ARMRegisters::r0;
static const RegisterID cachedResultRegister = ARMRegisters::r0;
static const RegisterID firstArgumentRegister = ARMRegisters::r0;
static const RegisterID timeoutCheckRegister = ARMRegisters::r5;
static const RegisterID callFrameRegister = ARMRegisters::r4;
static const RegisterID regT0 = ARMRegisters::r0;
static const RegisterID regT1 = ARMRegisters::r1;
static const RegisterID regT2 = ARMRegisters::r2;
// Callee preserved
static const RegisterID regT3 = ARMRegisters::r7;
static const RegisterID regS0 = ARMRegisters::S0;
// Callee preserved
static const RegisterID regS1 = ARMRegisters::S1;
static const RegisterID regStackPtr = ARMRegisters::sp;
static const RegisterID regLink = ARMRegisters::lr;
static const FPRegisterID fpRegT0 = ARMRegisters::d0;
static const FPRegisterID fpRegT1 = ARMRegisters::d1;
static const FPRegisterID fpRegT2 = ARMRegisters::d2;
#else
#error "JIT not supported on this platform."
#endif
static const int patchGetByIdDefaultStructure = -1;
// Magic number - initial offset cannot be representable as a signed 8bit value, or the X86Assembler
// will compress the displacement, and we may not be able to fit a patched offset.
static const int patchGetByIdDefaultOffset = 256;
public:
static JITCode compile(JSGlobalData* globalData, CodeBlock* codeBlock)
{
return JIT(globalData, codeBlock).privateCompile();
}
static void compileGetByIdProto(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset, ReturnAddressPtr returnAddress)
{
JIT jit(globalData, codeBlock);
jit.privateCompileGetByIdProto(stubInfo, structure, prototypeStructure, ident, slot, cachedOffset, returnAddress, callFrame);
}
static void compileGetByIdSelfList(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset)
{
JIT jit(globalData, codeBlock);
jit.privateCompileGetByIdSelfList(stubInfo, polymorphicStructures, currentIndex, structure, ident, slot, cachedOffset);
}
static void compileGetByIdProtoList(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset)
{
JIT jit(globalData, codeBlock);
jit.privateCompileGetByIdProtoList(stubInfo, prototypeStructureList, currentIndex, structure, prototypeStructure, ident, slot, cachedOffset, callFrame);
}
static void compileGetByIdChainList(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset)
{
JIT jit(globalData, codeBlock);
jit.privateCompileGetByIdChainList(stubInfo, prototypeStructureList, currentIndex, structure, chain, count, ident, slot, cachedOffset, callFrame);
}
static void compileGetByIdChain(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset, ReturnAddressPtr returnAddress)
{
JIT jit(globalData, codeBlock);
jit.privateCompileGetByIdChain(stubInfo, structure, chain, count, ident, slot, cachedOffset, returnAddress, callFrame);
}
static void compilePutByIdTransition(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, size_t cachedOffset, StructureChain* chain, ReturnAddressPtr returnAddress)
{
JIT jit(globalData, codeBlock);
jit.privateCompilePutByIdTransition(stubInfo, oldStructure, newStructure, cachedOffset, chain, returnAddress);
}
static void compileCTIMachineTrampolines(JSGlobalData* globalData, RefPtr<ExecutablePool>* executablePool, TrampolineStructure *trampolines)
{
JIT jit(globalData);
jit.privateCompileCTIMachineTrampolines(executablePool, globalData, trampolines);
}
static void patchGetByIdSelf(CodeBlock* codeblock, StructureStubInfo*, Structure*, size_t cachedOffset, ReturnAddressPtr returnAddress);
static void patchPutByIdReplace(CodeBlock* codeblock, StructureStubInfo*, Structure*, size_t cachedOffset, ReturnAddressPtr returnAddress);
static void patchMethodCallProto(CodeBlock* codeblock, MethodCallLinkInfo&, JSFunction*, Structure*, JSObject*, ReturnAddressPtr);
static void compilePatchGetArrayLength(JSGlobalData* globalData, CodeBlock* codeBlock, ReturnAddressPtr returnAddress)
{
JIT jit(globalData, codeBlock);
return jit.privateCompilePatchGetArrayLength(returnAddress);
}
static void linkCall(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, JITCode&, CallLinkInfo*, int callerArgCount, JSGlobalData*);
static void unlinkCall(CallLinkInfo*);
private:
struct JSRInfo {
DataLabelPtr storeLocation;
Label target;
JSRInfo(DataLabelPtr storeLocation, Label targetLocation)
: storeLocation(storeLocation)
, target(targetLocation)
{
}
};
JIT(JSGlobalData*, CodeBlock* = 0);
void privateCompileMainPass();
void privateCompileLinkPass();
void privateCompileSlowCases();
JITCode privateCompile();
void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, size_t cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame);
void privateCompileGetByIdSelfList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, const Identifier&, const PropertySlot&, size_t cachedOffset);
void privateCompileGetByIdProtoList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, size_t cachedOffset, CallFrame* callFrame);
void privateCompileGetByIdChainList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, StructureChain* chain, size_t count, const Identifier&, const PropertySlot&, size_t cachedOffset, CallFrame* callFrame);
void privateCompileGetByIdChain(StructureStubInfo*, Structure*, StructureChain*, size_t count, const Identifier&, const PropertySlot&, size_t cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame);
void privateCompilePutByIdTransition(StructureStubInfo*, Structure*, Structure*, size_t cachedOffset, StructureChain*, ReturnAddressPtr returnAddress);
void privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* data, TrampolineStructure *trampolines);
void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress);
void addSlowCase(Jump);
void addSlowCase(JumpList);
void addJump(Jump, int);
void emitJumpSlowToHot(Jump, int);
void compileOpCall(OpcodeID, Instruction* instruction, unsigned callLinkInfoIndex);
void compileOpCallVarargs(Instruction* instruction);
void compileOpCallInitializeCallFrame();
void compileOpCallSetupArgs(Instruction*);
void compileOpCallVarargsSetupArgs(Instruction*);
void compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID);
void compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter);
void compileOpConstructSetupArgs(Instruction*);
enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq };
void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type);
bool isOperandConstantImmediateDouble(unsigned src);
void emitLoadDouble(unsigned index, FPRegisterID value);
void emitLoadInt32ToDouble(unsigned index, FPRegisterID value);
Address addressFor(unsigned index, RegisterID base = callFrameRegister);
void testPrototype(Structure*, JumpList& failureCases);
#if USE(JSVALUE32_64)
Address tagFor(unsigned index, RegisterID base = callFrameRegister);
Address payloadFor(unsigned index, RegisterID base = callFrameRegister);
bool getOperandConstantImmediateInt(unsigned op1, unsigned op2, unsigned& op, int32_t& constant);
void emitLoadTag(unsigned index, RegisterID tag);
void emitLoadPayload(unsigned index, RegisterID payload);
void emitLoad(const JSValue& v, RegisterID tag, RegisterID payload);
void emitLoad(unsigned index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister);
void emitLoad2(unsigned index1, RegisterID tag1, RegisterID payload1, unsigned index2, RegisterID tag2, RegisterID payload2);
void emitStore(unsigned index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister);
void emitStore(unsigned index, const JSValue constant, RegisterID base = callFrameRegister);
void emitStoreInt32(unsigned index, RegisterID payload, bool indexIsInt32 = false);
void emitStoreInt32(unsigned index, Imm32 payload, bool indexIsInt32 = false);
void emitStoreCell(unsigned index, RegisterID payload, bool indexIsCell = false);
void emitStoreBool(unsigned index, RegisterID tag, bool indexIsBool = false);
void emitStoreDouble(unsigned index, FPRegisterID value);
bool isLabeled(unsigned bytecodeIndex);
void map(unsigned bytecodeIndex, unsigned virtualRegisterIndex, RegisterID tag, RegisterID payload);
void unmap(RegisterID);
void unmap();
bool isMapped(unsigned virtualRegisterIndex);
bool getMappedPayload(unsigned virtualRegisterIndex, RegisterID& payload);
bool getMappedTag(unsigned virtualRegisterIndex, RegisterID& tag);
void emitJumpSlowCaseIfNotJSCell(unsigned virtualRegisterIndex);
void emitJumpSlowCaseIfNotJSCell(unsigned virtualRegisterIndex, RegisterID tag);
void linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator&, unsigned virtualRegisterIndex);
#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
void compileGetByIdHotPath();
void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector<SlowCaseEntry>::iterator& iter, bool isMethodCheck = false);
#endif
void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, Structure* structure, size_t cachedOffset);
void compileGetDirectOffset(JSObject* base, RegisterID temp, RegisterID resultTag, RegisterID resultPayload, size_t cachedOffset);
void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, RegisterID structure, RegisterID offset);
void compilePutDirectOffset(RegisterID base, RegisterID valueTag, RegisterID valuePayload, Structure* structure, size_t cachedOffset);
// Arithmetic opcode helpers
void emitAdd32Constant(unsigned dst, unsigned op, int32_t constant, ResultType opType);
void emitSub32Constant(unsigned dst, unsigned op, int32_t constant, ResultType opType);
void emitBinaryDoubleOp(OpcodeID, unsigned dst, unsigned op1, unsigned op2, OperandTypes, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters = true, bool op2IsInRegisters = true);
#if CPU(X86)
// These architecture specific value are used to enable patching - see comment on op_put_by_id.
static const int patchOffsetPutByIdStructure = 7;
static const int patchOffsetPutByIdExternalLoad = 13;
static const int patchLengthPutByIdExternalLoad = 3;
static const int patchOffsetPutByIdPropertyMapOffset1 = 22;
static const int patchOffsetPutByIdPropertyMapOffset2 = 28;
// These architecture specific value are used to enable patching - see comment on op_get_by_id.
static const int patchOffsetGetByIdStructure = 7;
static const int patchOffsetGetByIdBranchToSlowCase = 13;
static const int patchOffsetGetByIdExternalLoad = 13;
static const int patchLengthGetByIdExternalLoad = 3;
static const int patchOffsetGetByIdPropertyMapOffset1 = 22;
static const int patchOffsetGetByIdPropertyMapOffset2 = 28;
static const int patchOffsetGetByIdPutResult = 28;
#if ENABLE(OPCODE_SAMPLING) && USE(JIT_STUB_ARGUMENT_VA_LIST)
static const int patchOffsetGetByIdSlowCaseCall = 35;
#elif ENABLE(OPCODE_SAMPLING)
static const int patchOffsetGetByIdSlowCaseCall = 37;
#elif USE(JIT_STUB_ARGUMENT_VA_LIST)
static const int patchOffsetGetByIdSlowCaseCall = 25;
#else
static const int patchOffsetGetByIdSlowCaseCall = 27;
#endif
static const int patchOffsetOpCallCompareToJump = 6;
static const int patchOffsetMethodCheckProtoObj = 11;
static const int patchOffsetMethodCheckProtoStruct = 18;
static const int patchOffsetMethodCheckPutFunction = 29;
#elif CPU(ARM_TRADITIONAL)
// These architecture specific value are used to enable patching - see comment on op_put_by_id.
static const int patchOffsetPutByIdStructure = 4;
static const int patchOffsetPutByIdExternalLoad = 16;
static const int patchLengthPutByIdExternalLoad = 4;
static const int patchOffsetPutByIdPropertyMapOffset1 = 20;
static const int patchOffsetPutByIdPropertyMapOffset2 = 28;
// These architecture specific value are used to enable patching - see comment on op_get_by_id.
static const int patchOffsetGetByIdStructure = 4;
static const int patchOffsetGetByIdBranchToSlowCase = 16;
static const int patchOffsetGetByIdExternalLoad = 16;
static const int patchLengthGetByIdExternalLoad = 4;
static const int patchOffsetGetByIdPropertyMapOffset1 = 20;
static const int patchOffsetGetByIdPropertyMapOffset2 = 28;
static const int patchOffsetGetByIdPutResult = 36;
#if ENABLE(OPCODE_SAMPLING)
#error "OPCODE_SAMPLING is not yet supported"
#else
static const int patchOffsetGetByIdSlowCaseCall = 32;
#endif
static const int patchOffsetOpCallCompareToJump = 12;
static const int patchOffsetMethodCheckProtoObj = 12;
static const int patchOffsetMethodCheckProtoStruct = 20;
static const int patchOffsetMethodCheckPutFunction = 32;
// sequenceOpCall
static const int sequenceOpCallInstructionSpace = 12;
static const int sequenceOpCallConstantSpace = 2;
// sequenceMethodCheck
static const int sequenceMethodCheckInstructionSpace = 40;
static const int sequenceMethodCheckConstantSpace = 6;
// sequenceGetByIdHotPath
static const int sequenceGetByIdHotPathInstructionSpace = 36;
static const int sequenceGetByIdHotPathConstantSpace = 4;
// sequenceGetByIdSlowCase
static const int sequenceGetByIdSlowCaseInstructionSpace = 40;
static const int sequenceGetByIdSlowCaseConstantSpace = 2;
// sequencePutById
static const int sequencePutByIdInstructionSpace = 36;
static const int sequencePutByIdConstantSpace = 4;
#else
#error "JSVALUE32_64 not supported on this platform."
#endif
#else // USE(JSVALUE32_64)
void emitGetVirtualRegister(int src, RegisterID dst);
void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2);
void emitPutVirtualRegister(unsigned dst, RegisterID from = regT0);
int32_t getConstantOperandImmediateInt(unsigned src);
void emitGetVariableObjectRegister(RegisterID variableObject, int index, RegisterID dst);
void emitPutVariableObjectRegister(RegisterID src, RegisterID variableObject, int index);
void killLastResultRegister();
Jump emitJumpIfJSCell(RegisterID);
Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID);
void emitJumpSlowCaseIfJSCell(RegisterID);
Jump emitJumpIfNotJSCell(RegisterID);
void emitJumpSlowCaseIfNotJSCell(RegisterID);
void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg);
#if USE(JSVALUE64)
JIT::Jump emitJumpIfImmediateNumber(RegisterID);
JIT::Jump emitJumpIfNotImmediateNumber(RegisterID);
#else
JIT::Jump emitJumpIfImmediateNumber(RegisterID reg)
{
return emitJumpIfImmediateInteger(reg);
}
JIT::Jump emitJumpIfNotImmediateNumber(RegisterID reg)
{
return emitJumpIfNotImmediateInteger(reg);
}
#endif
JIT::Jump emitJumpIfImmediateInteger(RegisterID);
JIT::Jump emitJumpIfNotImmediateInteger(RegisterID);
JIT::Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID);
void emitJumpSlowCaseIfNotImmediateInteger(RegisterID);
void emitJumpSlowCaseIfNotImmediateNumber(RegisterID);
void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID);
#if !USE(JSVALUE64)
void emitFastArithDeTagImmediate(RegisterID);
Jump emitFastArithDeTagImmediateJumpIfZero(RegisterID);
#endif
void emitFastArithReTagImmediate(RegisterID src, RegisterID dest);
void emitFastArithImmToInt(RegisterID);
void emitFastArithIntToImmNoCheck(RegisterID src, RegisterID dest);
void emitTagAsBoolImmediate(RegisterID reg);
void compileBinaryArithOp(OpcodeID, unsigned dst, unsigned src1, unsigned src2, OperandTypes opi);
#if USE(JSVALUE64)
void compileBinaryArithOpSlowCase(OpcodeID, Vector<SlowCaseEntry>::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase);
#else
void compileBinaryArithOpSlowCase(OpcodeID, Vector<SlowCaseEntry>::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes);
#endif
#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
void compileGetByIdHotPath(int resultVReg, int baseVReg, Identifier* ident, unsigned propertyAccessInstructionIndex);
void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector<SlowCaseEntry>::iterator& iter, bool isMethodCheck = false);
#endif
void compileGetDirectOffset(RegisterID base, RegisterID result, Structure* structure, size_t cachedOffset);
void compileGetDirectOffset(JSObject* base, RegisterID temp, RegisterID result, size_t cachedOffset);
void compileGetDirectOffset(RegisterID base, RegisterID result, RegisterID structure, RegisterID offset, RegisterID scratch);
void compilePutDirectOffset(RegisterID base, RegisterID value, Structure* structure, size_t cachedOffset);
#if CPU(X86_64)
// These architecture specific value are used to enable patching - see comment on op_put_by_id.
static const int patchOffsetPutByIdStructure = 10;
static const int patchOffsetPutByIdExternalLoad = 20;
static const int patchLengthPutByIdExternalLoad = 4;
static const int patchOffsetPutByIdPropertyMapOffset = 31;
// These architecture specific value are used to enable patching - see comment on op_get_by_id.
static const int patchOffsetGetByIdStructure = 10;
static const int patchOffsetGetByIdBranchToSlowCase = 20;
static const int patchOffsetGetByIdExternalLoad = 20;
static const int patchLengthGetByIdExternalLoad = 4;
static const int patchOffsetGetByIdPropertyMapOffset = 31;
static const int patchOffsetGetByIdPutResult = 31;
#if ENABLE(OPCODE_SAMPLING)
static const int patchOffsetGetByIdSlowCaseCall = 64;
#else
static const int patchOffsetGetByIdSlowCaseCall = 41;
#endif
static const int patchOffsetOpCallCompareToJump = 9;
static const int patchOffsetMethodCheckProtoObj = 20;
static const int patchOffsetMethodCheckProtoStruct = 30;
static const int patchOffsetMethodCheckPutFunction = 50;
#elif CPU(X86)
// These architecture specific value are used to enable patching - see comment on op_put_by_id.
static const int patchOffsetPutByIdStructure = 7;
static const int patchOffsetPutByIdExternalLoad = 13;
static const int patchLengthPutByIdExternalLoad = 3;
static const int patchOffsetPutByIdPropertyMapOffset = 22;
// These architecture specific value are used to enable patching - see comment on op_get_by_id.
static const int patchOffsetGetByIdStructure = 7;
static const int patchOffsetGetByIdBranchToSlowCase = 13;
static const int patchOffsetGetByIdExternalLoad = 13;
static const int patchLengthGetByIdExternalLoad = 3;
static const int patchOffsetGetByIdPropertyMapOffset = 22;
static const int patchOffsetGetByIdPutResult = 22;
#if ENABLE(OPCODE_SAMPLING) && USE(JIT_STUB_ARGUMENT_VA_LIST)
static const int patchOffsetGetByIdSlowCaseCall = 31;
#elif ENABLE(OPCODE_SAMPLING)
static const int patchOffsetGetByIdSlowCaseCall = 33;
#elif USE(JIT_STUB_ARGUMENT_VA_LIST)
static const int patchOffsetGetByIdSlowCaseCall = 21;
#else
static const int patchOffsetGetByIdSlowCaseCall = 23;
#endif
static const int patchOffsetOpCallCompareToJump = 6;
static const int patchOffsetMethodCheckProtoObj = 11;
static const int patchOffsetMethodCheckProtoStruct = 18;
static const int patchOffsetMethodCheckPutFunction = 29;
#elif CPU(ARM_THUMB2)
// These architecture specific value are used to enable patching - see comment on op_put_by_id.
static const int patchOffsetPutByIdStructure = 10;
static const int patchOffsetPutByIdExternalLoad = 26;
static const int patchLengthPutByIdExternalLoad = 12;
static const int patchOffsetPutByIdPropertyMapOffset = 46;
// These architecture specific value are used to enable patching - see comment on op_get_by_id.
static const int patchOffsetGetByIdStructure = 10;
static const int patchOffsetGetByIdBranchToSlowCase = 26;
static const int patchOffsetGetByIdExternalLoad = 26;
static const int patchLengthGetByIdExternalLoad = 12;
static const int patchOffsetGetByIdPropertyMapOffset = 46;
static const int patchOffsetGetByIdPutResult = 50;
#if ENABLE(OPCODE_SAMPLING)
static const int patchOffsetGetByIdSlowCaseCall = 0; // FIMXE
#else
static const int patchOffsetGetByIdSlowCaseCall = 28;
#endif
static const int patchOffsetOpCallCompareToJump = 16;
static const int patchOffsetMethodCheckProtoObj = 24;
static const int patchOffsetMethodCheckProtoStruct = 34;
static const int patchOffsetMethodCheckPutFunction = 58;
#elif CPU(ARM_TRADITIONAL)
// These architecture specific value are used to enable patching - see comment on op_put_by_id.
static const int patchOffsetPutByIdStructure = 4;
static const int patchOffsetPutByIdExternalLoad = 16;
static const int patchLengthPutByIdExternalLoad = 4;
static const int patchOffsetPutByIdPropertyMapOffset = 20;
// These architecture specific value are used to enable patching - see comment on op_get_by_id.
static const int patchOffsetGetByIdStructure = 4;
static const int patchOffsetGetByIdBranchToSlowCase = 16;
static const int patchOffsetGetByIdExternalLoad = 16;
static const int patchLengthGetByIdExternalLoad = 4;
static const int patchOffsetGetByIdPropertyMapOffset = 20;
static const int patchOffsetGetByIdPutResult = 28;
#if ENABLE(OPCODE_SAMPLING)
#error "OPCODE_SAMPLING is not yet supported"
#else
static const int patchOffsetGetByIdSlowCaseCall = 28;
#endif
static const int patchOffsetOpCallCompareToJump = 12;
static const int patchOffsetMethodCheckProtoObj = 12;
static const int patchOffsetMethodCheckProtoStruct = 20;
static const int patchOffsetMethodCheckPutFunction = 32;
// sequenceOpCall
static const int sequenceOpCallInstructionSpace = 12;
static const int sequenceOpCallConstantSpace = 2;
// sequenceMethodCheck
static const int sequenceMethodCheckInstructionSpace = 40;
static const int sequenceMethodCheckConstantSpace = 6;
// sequenceGetByIdHotPath
static const int sequenceGetByIdHotPathInstructionSpace = 28;
static const int sequenceGetByIdHotPathConstantSpace = 3;
// sequenceGetByIdSlowCase
static const int sequenceGetByIdSlowCaseInstructionSpace = 32;
static const int sequenceGetByIdSlowCaseConstantSpace = 2;
// sequencePutById
static const int sequencePutByIdInstructionSpace = 28;
static const int sequencePutByIdConstantSpace = 3;
#endif
#endif // USE(JSVALUE32_64)
#if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL
#define BEGIN_UNINTERRUPTED_SEQUENCE(name) beginUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace)
#define END_UNINTERRUPTED_SEQUENCE(name) endUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace)
void beginUninterruptedSequence(int, int);
void endUninterruptedSequence(int, int);
#else
#define BEGIN_UNINTERRUPTED_SEQUENCE(name)
#define END_UNINTERRUPTED_SEQUENCE(name)
#endif
void emit_op_add(Instruction*);
void emit_op_bitand(Instruction*);
void emit_op_bitnot(Instruction*);
void emit_op_bitor(Instruction*);
void emit_op_bitxor(Instruction*);
void emit_op_call(Instruction*);
void emit_op_call_eval(Instruction*);
void emit_op_call_varargs(Instruction*);
void emit_op_catch(Instruction*);
void emit_op_construct(Instruction*);
void emit_op_construct_verify(Instruction*);
void emit_op_convert_this(Instruction*);
void emit_op_create_arguments(Instruction*);
void emit_op_debug(Instruction*);
void emit_op_del_by_id(Instruction*);
void emit_op_div(Instruction*);
void emit_op_end(Instruction*);
void emit_op_enter(Instruction*);
void emit_op_enter_with_activation(Instruction*);
void emit_op_eq(Instruction*);
void emit_op_eq_null(Instruction*);
void emit_op_get_by_id(Instruction*);
void emit_op_get_by_val(Instruction*);
void emit_op_get_by_pname(Instruction*);
void emit_op_get_global_var(Instruction*);
void emit_op_get_scoped_var(Instruction*);
void emit_op_init_arguments(Instruction*);
void emit_op_instanceof(Instruction*);
void emit_op_jeq_null(Instruction*);
void emit_op_jfalse(Instruction*);
void emit_op_jmp(Instruction*);
void emit_op_jmp_scopes(Instruction*);
void emit_op_jneq_null(Instruction*);
void emit_op_jneq_ptr(Instruction*);
void emit_op_jnless(Instruction*);
void emit_op_jless(Instruction*);
void emit_op_jnlesseq(Instruction*);
void emit_op_jsr(Instruction*);
void emit_op_jtrue(Instruction*);
void emit_op_load_varargs(Instruction*);
void emit_op_loop(Instruction*);
void emit_op_loop_if_less(Instruction*);
void emit_op_loop_if_lesseq(Instruction*);
void emit_op_loop_if_true(Instruction*);
void emit_op_loop_if_false(Instruction*);
void emit_op_lshift(Instruction*);
void emit_op_method_check(Instruction*);
void emit_op_mod(Instruction*);
void emit_op_mov(Instruction*);
void emit_op_mul(Instruction*);
void emit_op_negate(Instruction*);
void emit_op_neq(Instruction*);
void emit_op_neq_null(Instruction*);
void emit_op_new_array(Instruction*);
void emit_op_new_error(Instruction*);
void emit_op_new_func(Instruction*);
void emit_op_new_func_exp(Instruction*);
void emit_op_new_object(Instruction*);
void emit_op_new_regexp(Instruction*);
void emit_op_get_pnames(Instruction*);
void emit_op_next_pname(Instruction*);
void emit_op_not(Instruction*);
void emit_op_nstricteq(Instruction*);
void emit_op_pop_scope(Instruction*);
void emit_op_post_dec(Instruction*);
void emit_op_post_inc(Instruction*);
void emit_op_pre_dec(Instruction*);
void emit_op_pre_inc(Instruction*);
void emit_op_profile_did_call(Instruction*);
void emit_op_profile_will_call(Instruction*);
void emit_op_push_new_scope(Instruction*);
void emit_op_push_scope(Instruction*);
void emit_op_put_by_id(Instruction*);
void emit_op_put_by_index(Instruction*);
void emit_op_put_by_val(Instruction*);
void emit_op_put_getter(Instruction*);
void emit_op_put_global_var(Instruction*);
void emit_op_put_scoped_var(Instruction*);
void emit_op_put_setter(Instruction*);
void emit_op_resolve(Instruction*);
void emit_op_resolve_base(Instruction*);
void emit_op_resolve_global(Instruction*);
void emit_op_resolve_skip(Instruction*);
void emit_op_resolve_with_base(Instruction*);
void emit_op_ret(Instruction*);
void emit_op_rshift(Instruction*);
void emit_op_sret(Instruction*);
void emit_op_strcat(Instruction*);
void emit_op_stricteq(Instruction*);
void emit_op_sub(Instruction*);
void emit_op_switch_char(Instruction*);
void emit_op_switch_imm(Instruction*);
void emit_op_switch_string(Instruction*);
void emit_op_tear_off_activation(Instruction*);
void emit_op_tear_off_arguments(Instruction*);
void emit_op_throw(Instruction*);
void emit_op_to_jsnumber(Instruction*);
void emit_op_to_primitive(Instruction*);
void emit_op_unexpected_load(Instruction*);
#if ENABLE(JIT_OPTIMIZE_MOD)
void softModulo();
#endif
void emitSlow_op_add(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_bitand(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_bitnot(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_bitor(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_bitxor(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_call(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_call_eval(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_call_varargs(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_construct(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_construct_verify(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_convert_this(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_div(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_eq(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_get_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_get_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_get_by_pname(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_instanceof(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_jfalse(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_jnless(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_jless(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_jnlesseq(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_jtrue(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_loop_if_less(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_loop_if_lesseq(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_loop_if_true(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_loop_if_false(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_lshift(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_method_check(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_mod(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_mul(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_negate(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_neq(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_not(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_nstricteq(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_post_dec(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_post_inc(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_pre_dec(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_pre_inc(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_put_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_put_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_resolve_global(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_rshift(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_stricteq(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_sub(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_to_jsnumber(Instruction*, Vector<SlowCaseEntry>::iterator&);
void emitSlow_op_to_primitive(Instruction*, Vector<SlowCaseEntry>::iterator&);
/* These functions are deprecated: Please use JITStubCall instead. */
void emitPutJITStubArg(RegisterID src, unsigned argumentNumber);
#if USE(JSVALUE32_64)
void emitPutJITStubArg(RegisterID tag, RegisterID payload, unsigned argumentNumber);
void emitPutJITStubArgFromVirtualRegister(unsigned src, unsigned argumentNumber, RegisterID scratch1, RegisterID scratch2);
#else
void emitPutJITStubArgFromVirtualRegister(unsigned src, unsigned argumentNumber, RegisterID scratch);
#endif
void emitPutJITStubArgConstant(unsigned value, unsigned argumentNumber);
void emitPutJITStubArgConstant(void* value, unsigned argumentNumber);
void emitGetJITStubArg(unsigned argumentNumber, RegisterID dst);
void emitInitRegister(unsigned dst);
void emitPutToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry entry);
void emitPutImmediateToCallFrameHeader(void* value, RegisterFile::CallFrameHeaderEntry entry);
void emitGetFromCallFrameHeaderPtr(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from = callFrameRegister);
void emitGetFromCallFrameHeader32(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from = callFrameRegister);
JSValue getConstantOperand(unsigned src);
bool isOperandConstantImmediateInt(unsigned src);
Jump getSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
return iter++->from;
}
void linkSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
iter->from.link(this);
++iter;
}
void linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator&, int vReg);
Jump checkStructure(RegisterID reg, Structure* structure);
void restoreArgumentReference();
void restoreArgumentReferenceForTrampoline();
Call emitNakedCall(CodePtr function = CodePtr());
void preserveReturnAddressAfterCall(RegisterID);
void restoreReturnAddressBeforeReturn(RegisterID);
void restoreReturnAddressBeforeReturn(Address);
void emitTimeoutCheck();
#ifndef NDEBUG
void printBytecodeOperandTypes(unsigned src1, unsigned src2);
#endif
#if ENABLE(SAMPLING_FLAGS)
void setSamplingFlag(int32_t);
void clearSamplingFlag(int32_t);
#endif
#if ENABLE(SAMPLING_COUNTERS)
void emitCount(AbstractSamplingCounter&, uint32_t = 1);
#endif
#if ENABLE(OPCODE_SAMPLING)
void sampleInstruction(Instruction*, bool = false);
#endif
#if ENABLE(CODEBLOCK_SAMPLING)
void sampleCodeBlock(CodeBlock*);
#else
void sampleCodeBlock(CodeBlock*) {}
#endif
Interpreter* m_interpreter;
JSGlobalData* m_globalData;
CodeBlock* m_codeBlock;
Vector<CallRecord> m_calls;
Vector<Label> m_labels;
Vector<PropertyStubCompilationInfo> m_propertyAccessCompilationInfo;
Vector<StructureStubCompilationInfo> m_callStructureStubCompilationInfo;
Vector<MethodCallCompilationInfo> m_methodCallCompilationInfo;
Vector<JumpTable> m_jmpTable;
unsigned m_bytecodeIndex;
Vector<JSRInfo> m_jsrSites;
Vector<SlowCaseEntry> m_slowCases;
Vector<SwitchRecord> m_switches;
unsigned m_propertyAccessInstructionIndex;
unsigned m_globalResolveInfoIndex;
unsigned m_callLinkInfoIndex;
#if USE(JSVALUE32_64)
unsigned m_jumpTargetIndex;
unsigned m_mappedBytecodeIndex;
unsigned m_mappedVirtualRegisterIndex;
RegisterID m_mappedTag;
RegisterID m_mappedPayload;
#else
int m_lastResultBytecodeRegister;
unsigned m_jumpTargetsPosition;
#endif
#ifndef NDEBUG
#if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL
Label m_uninterruptedInstructionSequenceBegin;
int m_uninterruptedConstantSequenceBegin;
#endif
#endif
} JIT_CLASS_ALIGNMENT;
inline void JIT::emit_op_loop(Instruction* currentInstruction)
{
emitTimeoutCheck();
emit_op_jmp(currentInstruction);
}
inline void JIT::emit_op_loop_if_true(Instruction* currentInstruction)
{
emitTimeoutCheck();
emit_op_jtrue(currentInstruction);
}
inline void JIT::emitSlow_op_loop_if_true(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
emitSlow_op_jtrue(currentInstruction, iter);
}
inline void JIT::emit_op_loop_if_false(Instruction* currentInstruction)
{
emitTimeoutCheck();
emit_op_jfalse(currentInstruction);
}
inline void JIT::emitSlow_op_loop_if_false(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
emitSlow_op_jfalse(currentInstruction, iter);
}
inline void JIT::emit_op_loop_if_less(Instruction* currentInstruction)
{
emitTimeoutCheck();
emit_op_jless(currentInstruction);
}
inline void JIT::emitSlow_op_loop_if_less(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
emitSlow_op_jless(currentInstruction, iter);
}
} // namespace JSC
#endif // ENABLE(JIT)
#endif // JIT_h
|
