Repository navigation
Expand file tree
/
Copy pathStackVisitor.cpp
More file actions
662 lines (580 loc) · 22.7 KB
/
Copy pathStackVisitor.cpp
File metadata and controls
662 lines (580 loc) · 22.7 KB
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
/*
* Copyright (C) 2013-2025 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.
*/
#include "config.h"
#include "StackVisitor.h"
#include "ClonedArguments.h"
#include "DebuggerPrimitives.h"
#include "ExecutableBaseInlines.h"
#include "InlineCallFrame.h"
#include "JSCInlines.h"
#include "NativeCallee.h"
#include "RegisterAtOffsetList.h"
#include "WasmCallee.h"
#include "WasmIndexOrName.h"
#include "WebAssemblyFunction.h"
#include <wtf/text/MakeString.h>
namespace JSC {
StackVisitor::StackVisitor(CallFrame* startFrame, VM& vm, bool skipFirstFrame)
{
CallFrame* topFrame = nullptr;
if (startFrame) {
ASSERT(!vm.topCallFrame || static_cast<void*>(vm.topCallFrame) != vm.topEntryFrame);
m_frame.m_entryFrame = vm.topEntryFrame;
topFrame = vm.topCallFrame;
if (topFrame) {
m_previousReturnPC = vm.maybeReturnPC;
if (skipFirstFrame || topFrame->isZombieFrame()) {
m_previousReturnPC = topFrame->rawReturnPC();
topFrame = topFrame->callerFrame(m_frame.m_entryFrame);
m_topEntryFrameIsEmpty = (m_frame.m_entryFrame != vm.topEntryFrame);
if (startFrame == vm.topCallFrame)
startFrame = topFrame;
}
}
}
readFrame(topFrame);
// Find the frame the caller wants to start unwinding from.
while (m_frame.callFrame() && m_frame.callFrame() != startFrame)
gotoNextFrame();
}
void StackVisitor::gotoNextFrame()
{
m_frame.m_index++;
#if ENABLE(DFG_JIT)
if (m_frame.isInlinedDFGFrame()) {
InlineCallFrame* inlineCallFrame = m_frame.inlineCallFrame();
CodeOrigin* callerCodeOrigin = inlineCallFrame->getCallerSkippingTailCalls();
if (!callerCodeOrigin) {
while (inlineCallFrame) {
readInlinedFrame(m_frame.callFrame(), &inlineCallFrame->directCaller);
inlineCallFrame = m_frame.inlineCallFrame();
}
m_frame.m_entryFrame = m_frame.m_callerEntryFrame;
readFrame(m_frame.callerFrame());
} else
readInlinedFrame(m_frame.callFrame(), callerCodeOrigin);
return;
}
#endif // ENABLE(DFG_JIT)
m_frame.m_entryFrame = m_frame.m_callerEntryFrame;
readFrame(m_frame.callerFrame());
}
void StackVisitor::unwindToMachineCodeBlockFrame()
{
#if ENABLE(DFG_JIT)
if (m_frame.isInlinedDFGFrame()) {
CodeOrigin codeOrigin = m_frame.inlineCallFrame()->directCaller;
while (codeOrigin.inlineCallFrame())
codeOrigin = codeOrigin.inlineCallFrame()->directCaller;
readNonInlinedFrame(m_frame.callFrame(), &codeOrigin);
}
#endif
}
inline CallFrame* StackVisitor::updatePreviousReturnPCIfNecessary(CallFrame* callFrame)
{
if (m_frame.m_callFrame) {
if (m_frame.m_callFrame != callFrame)
m_previousReturnPC = m_frame.m_callFrame->rawReturnPC();
}
return callFrame;
}
void StackVisitor::readFrame(CallFrame* callFrame)
{
if (!callFrame) {
m_frame.setToEnd();
return;
}
if (callFrame->isNativeCalleeFrame()) {
readInlinableNativeCalleeFrame(callFrame);
return;
}
#if !ENABLE(DFG_JIT)
readNonInlinedFrame(callFrame);
#else // !ENABLE(DFG_JIT)
// If the frame doesn't have a code block, then it's not a DFG frame.
// Hence, we're not at an inlined frame.
CodeBlock* codeBlock = callFrame->codeBlock();
if (!codeBlock) {
readNonInlinedFrame(callFrame);
return;
}
#if ASSERT_ENABLED
if (!codeBlock->inherits<CodeBlock>()) {
dataLogLn("Invalid codeblock type: ", *(JSCell*)codeBlock);
dataLogLn("Callee: ", RawPointer(callFrame->unsafeCallee().rawPtr()));
ASSERT_NOT_REACHED();
readNonInlinedFrame(callFrame);
return;
}
#endif
// If the code block does not have any code origins, then there's no
// inlining. Hence, we're not at an inlined frame.
if (!codeBlock->hasCodeOrigins()) {
readNonInlinedFrame(callFrame);
return;
}
CallSiteIndex index = callFrame->callSiteIndex();
ASSERT(codeBlock->canGetCodeOrigin(index));
if (!codeBlock->canGetCodeOrigin(index)) {
// See assertion above. In release builds, we try to protect ourselves
// from crashing even though stack walking will be goofed up.
m_frame.setToEnd();
return;
}
CodeOrigin codeOrigin = codeBlock->codeOrigin(index);
if (!codeOrigin.inlineCallFrame()) {
readNonInlinedFrame(callFrame, &codeOrigin);
return;
}
readInlinedFrame(callFrame, &codeOrigin);
#endif // !ENABLE(DFG_JIT)
}
void StackVisitor::readNonInlinedFrame(CallFrame* callFrame, CodeOrigin* codeOrigin)
{
m_frame.m_callFrame = updatePreviousReturnPCIfNecessary(callFrame);
m_frame.m_returnPC = m_previousReturnPC;
m_frame.m_argumentCountIncludingThis = callFrame->argumentCountIncludingThis();
m_frame.m_callerEntryFrame = m_frame.m_entryFrame;
m_frame.m_callerFrame = callFrame->callerFrame(m_frame.m_callerEntryFrame);
m_frame.m_callerIsEntryFrame = m_frame.m_callerEntryFrame != m_frame.m_entryFrame;
m_frame.m_isWasmFrame = false;
m_frame.m_callee = callFrame->callee();
#if ENABLE(DFG_JIT)
m_frame.m_inlineDFGCallFrame = nullptr;
#endif
m_frame.m_wasmDistanceFromDeepestInlineFrame = 0;
m_frame.m_codeBlock = callFrame->isNativeCalleeFrame() ? nullptr : callFrame->codeBlock();
m_frame.m_bytecodeIndex = !m_frame.codeBlock() ? BytecodeIndex(0)
: codeOrigin ? codeOrigin->bytecodeIndex()
: callFrame->bytecodeIndex();
RELEASE_ASSERT(!callFrame->isNativeCalleeFrame());
}
void StackVisitor::readInlinableNativeCalleeFrame(CallFrame* callFrame)
{
RELEASE_ASSERT(callFrame->callee().isNativeCallee());
auto& callee = *callFrame->callee().asNativeCallee();
switch (callee.category()) {
case NativeCallee::Category::Wasm: {
#if ENABLE(WEBASSEMBLY)
auto& wasmCallee = uncheckedDowncast<Wasm::Callee>(callee);
auto depth = m_frame.m_wasmDistanceFromDeepestInlineFrame;
m_frame.m_callFrame = updatePreviousReturnPCIfNecessary(callFrame);
m_frame.m_returnPC = m_previousReturnPC;
m_frame.m_isWasmFrame = true;
m_frame.m_argumentCountIncludingThis = callFrame->argumentCountIncludingThis();
m_frame.m_callerEntryFrame = m_frame.m_entryFrame;
m_frame.m_callerFrame = callFrame->callerFrame(m_frame.m_callerEntryFrame);
m_frame.m_callerIsEntryFrame = m_frame.m_callerEntryFrame != m_frame.m_entryFrame;
m_frame.m_callee = callFrame->callee();
m_frame.m_codeBlock = nullptr;
m_frame.m_wasmDistanceFromDeepestInlineFrame = 0;
m_frame.m_wasmCallSiteIndexBits = callFrame->callSiteIndex().bits();
m_frame.m_wasmFunctionIndexOrName = wasmCallee.indexOrName();
m_frame.m_wasmFunctionIndex = wasmCallee.index();
#if ENABLE(WEBASSEMBLY_OMGJIT)
bool canInline = isAnyOMG(wasmCallee.compilationMode());
if (!canInline)
return;
const auto& omgCallee = uncheckedDowncast<const Wasm::OptimizingJITCallee>(wasmCallee);
bool isInlined = false;
// Because PC is just after the call instruction, to query to the origin for the call instruction, we decrease it by 1.
// While it can be pointing at the broken offset (e.g. all ARM64 instructions are 4-byte aligned), it is still fine since map is controlling pc with range.
auto callSiteIndexFromPC = omgCallee.tryGetCallSiteIndex(std::bit_cast<void*>(std::bit_cast<uintptr_t>(removeCodePtrTag<void*>(m_frame.m_returnPC)) - 1));
RELEASE_ASSERT(callSiteIndexFromPC);
CallSiteIndex callSiteIndex = callSiteIndexFromPC.value();
m_frame.m_wasmCallSiteIndexBits = callSiteIndex.bits();
auto codeOrigin = omgCallee.getCodeOrigin(callSiteIndex.bits(), depth, isInlined);
auto indexOrName = omgCallee.getIndexOrName(codeOrigin);
if (!isInlined)
return;
// The callerFrame just needs to be non-null to indicate that we
// haven't reached the last frame yet.
m_frame.m_callerFrame = callFrame;
m_frame.m_wasmDistanceFromDeepestInlineFrame = depth + 1;
m_frame.m_wasmFunctionIndexOrName = indexOrName;
m_frame.m_wasmFunctionIndex = codeOrigin->functionIndex;
#else
UNUSED_VARIABLE(depth);
#endif
#else
UNUSED_PARAM(callFrame);
#endif
break;
}
case NativeCallee::Category::InlineCache: {
m_frame.m_callFrame = updatePreviousReturnPCIfNecessary(callFrame);
m_frame.m_returnPC = m_previousReturnPC;
m_frame.m_argumentCountIncludingThis = callFrame->argumentCountIncludingThis();
m_frame.m_callerEntryFrame = m_frame.m_entryFrame;
m_frame.m_callerFrame = callFrame->callerFrame(m_frame.m_callerEntryFrame);
m_frame.m_callerIsEntryFrame = m_frame.m_callerEntryFrame != m_frame.m_entryFrame;
m_frame.m_isWasmFrame = false;
m_frame.m_callee = callFrame->callee();
#if ENABLE(DFG_JIT)
m_frame.m_inlineDFGCallFrame = nullptr;
#endif
m_frame.m_wasmDistanceFromDeepestInlineFrame = 0;
m_frame.m_codeBlock = nullptr;
m_frame.m_bytecodeIndex = BytecodeIndex(0);
break;
}
}
}
#if ENABLE(DFG_JIT)
static int LEGACY_NODELETE inlinedFrameOffset(CodeOrigin* codeOrigin)
{
InlineCallFrame* inlineCallFrame = codeOrigin->inlineCallFrame();
int frameOffset = inlineCallFrame ? inlineCallFrame->stackOffset : 0;
return frameOffset;
}
void StackVisitor::readInlinedFrame(CallFrame* callFrame, CodeOrigin* codeOrigin)
{
ASSERT(codeOrigin);
m_frame.m_isWasmFrame = false;
m_frame.m_wasmDistanceFromDeepestInlineFrame = 0;
int frameOffset = inlinedFrameOffset(codeOrigin);
bool isInlined = !!frameOffset;
if (isInlined) {
InlineCallFrame* inlineCallFrame = codeOrigin->inlineCallFrame();
m_frame.m_callFrame = updatePreviousReturnPCIfNecessary(callFrame);
m_frame.m_returnPC = m_previousReturnPC;
m_frame.m_inlineDFGCallFrame = inlineCallFrame;
if (inlineCallFrame->argumentCountRegister.isValid())
m_frame.m_argumentCountIncludingThis = callFrame->r(inlineCallFrame->argumentCountRegister).unboxedInt32();
else
m_frame.m_argumentCountIncludingThis = inlineCallFrame->argumentCountIncludingThis;
m_frame.m_codeBlock = inlineCallFrame->baselineCodeBlock.get();
m_frame.m_bytecodeIndex = codeOrigin->bytecodeIndex();
JSFunction* callee = inlineCallFrame->calleeForCallFrame(callFrame);
m_frame.m_callee = callee;
ASSERT(!!m_frame.callee().rawPtr());
// The callerFrame just needs to be non-null to indicate that we
// haven't reached the last frame yet. Setting it to the root
// frame (i.e. the callFrame that this inlined frame is called from)
// would work just fine.
m_frame.m_callerFrame = callFrame;
return;
}
readNonInlinedFrame(callFrame, codeOrigin);
}
#endif // ENABLE(DFG_JIT)
StackVisitor::Frame::CodeType StackVisitor::Frame::codeType() const
{
if (isNativeCalleeFrame()) {
auto* nativeCallee = callee().asNativeCallee();
switch (nativeCallee->category()) {
case NativeCallee::Category::Wasm:
return CodeType::Wasm;
case NativeCallee::Category::InlineCache:
return CodeType::Native;
}
return CodeType::Native;
}
if (!codeBlock())
return CodeType::Native;
switch (codeBlock()->codeType()) {
case EvalCode:
return CodeType::Eval;
case ModuleCode:
return CodeType::Module;
case FunctionCode:
return CodeType::Function;
case GlobalCode:
return CodeType::Global;
}
RELEASE_ASSERT_NOT_REACHED();
return CodeType::Global;
}
#if ENABLE(ASSEMBLER)
const RegisterAtOffsetList* StackVisitor::Frame::calleeSaveRegistersForUnwinding()
{
if (!NUMBER_OF_CALLEE_SAVES_REGISTERS)
return nullptr;
if (isInlinedDFGFrame())
return nullptr;
if (isNativeCalleeFrame()) {
auto* nativeCallee = callee().asNativeCallee();
switch (nativeCallee->category()) {
case NativeCallee::Category::Wasm: {
#if ENABLE(WEBASSEMBLY)
auto* wasmCallee = uncheckedDowncast<Wasm::Callee>(nativeCallee);
if (auto* calleeSaveRegisters = wasmCallee->calleeSaveRegisters())
return calleeSaveRegisters;
#endif // ENABLE(WEBASSEMBLY)
break;
}
case NativeCallee::Category::InlineCache: {
break;
}
}
return nullptr;
}
if (CodeBlock* codeBlock = this->codeBlock())
return codeBlock->jitCode()->calleeSaveRegisters();
return nullptr;
}
#endif // ENABLE(ASSEMBLER)
String StackVisitor::Frame::functionName() const
{
String traceLine;
switch (codeType()) {
case CodeType::Wasm:
traceLine = makeString(m_wasmFunctionIndexOrName);
break;
case CodeType::Eval:
traceLine = "eval code"_s;
break;
case CodeType::Module:
traceLine = "module code"_s;
break;
case CodeType::Native: {
JSCell* callee = this->callee().asCell();
if (callee)
traceLine = getCalculatedDisplayName(callFrame()->deprecatedVM(), uncheckedDowncast<JSObject>(callee)).impl();
break;
}
case CodeType::Function:
traceLine = getCalculatedDisplayName(callFrame()->deprecatedVM(), uncheckedDowncast<JSObject>(this->callee().asCell())).impl();
break;
case CodeType::Global:
traceLine = "global code"_s;
break;
}
return traceLine.isNull() ? emptyString() : traceLine;
}
String StackVisitor::Frame::sourceURL() const
{
String traceLine;
switch (codeType()) {
case CodeType::Eval:
case CodeType::Module:
case CodeType::Function:
case CodeType::Global: {
String sourceURL = codeBlock()->ownerExecutable()->sourceURL();
if (!sourceURL.isEmpty())
traceLine = sourceURL.impl();
break;
}
case CodeType::Native:
traceLine = "[native code]"_s;
break;
case CodeType::Wasm:
traceLine = "[wasm code]"_s;
break;
}
return traceLine.isNull() ? emptyString() : traceLine;
}
String StackVisitor::Frame::preRedirectURL() const
{
String traceLine;
switch (codeType()) {
case CodeType::Eval:
case CodeType::Module:
case CodeType::Function:
case CodeType::Global: {
String preRedirectURL = codeBlock()->ownerExecutable()->preRedirectURL();
if (!preRedirectURL.isEmpty())
traceLine = preRedirectURL.impl();
break;
}
case CodeType::Native:
case CodeType::Wasm:
break;
}
return traceLine.isNull() ? emptyString() : traceLine;
}
String StackVisitor::Frame::toString() const
{
String functionName = this->functionName();
String sourceURL = this->sourceURL();
auto separator = !sourceURL.isEmpty() && !functionName.isEmpty() ? "@"_s : ""_s;
if (sourceURL.isEmpty() || !hasLineAndColumnInfo())
return makeString(functionName, separator, sourceURL);
auto lineColumn = computeLineAndColumn();
return makeString(functionName, separator, sourceURL, ':', lineColumn.line, ':', lineColumn.column);
}
SourceID StackVisitor::Frame::sourceID()
{
if (CodeBlock* codeBlock = this->codeBlock())
return codeBlock->ownerExecutable()->sourceID();
return noSourceID;
}
ClonedArguments* StackVisitor::Frame::createArguments(VM& vm)
{
ASSERT(m_callFrame);
CallFrame* physicalFrame = m_callFrame;
// FIXME: Revisit JSGlobalObject.
// https://bugs.webkit.org/show_bug.cgi?id=203204
JSGlobalObject* globalObject = physicalFrame->lexicalGlobalObject(vm);
ClonedArguments* arguments;
ArgumentsMode mode;
if (Options::useFunctionDotArguments())
mode = ArgumentsMode::Cloned;
else
mode = ArgumentsMode::FakeValues;
#if ENABLE(DFG_JIT)
if (isInlinedDFGFrame()) {
ASSERT(m_inlineDFGCallFrame);
arguments = ClonedArguments::createWithInlineFrame(globalObject, physicalFrame, m_inlineDFGCallFrame, mode);
} else
#endif
arguments = ClonedArguments::createWithMachineFrame(globalObject, physicalFrame, mode);
return arguments;
}
bool StackVisitor::Frame::hasLineAndColumnInfo() const
{
return !!codeBlock();
}
LineColumn StackVisitor::Frame::computeLineAndColumn() const
{
CodeBlock* codeBlock = this->codeBlock();
if (!codeBlock)
return { };
auto lineColumn = codeBlock->lineColumnForBytecodeIndex(bytecodeIndex());
if (std::optional<int> overrideLineNumber = codeBlock->ownerExecutable()->overrideLineNumber(codeBlock->vm()))
lineColumn.line = overrideLineNumber.value();
return lineColumn;
}
void StackVisitor::Frame::setToEnd()
{
m_callFrame = nullptr;
#if ENABLE(DFG_JIT)
m_inlineDFGCallFrame = nullptr;
#endif
m_isWasmFrame = false;
}
bool StackVisitor::Frame::isImplementationVisibilityPrivate() const
{
ImplementationVisibility implementationVisibility = [&] () -> ImplementationVisibility {
if (auto* codeBlock = this->codeBlock()) {
if (auto* executable = codeBlock->ownerExecutable())
return executable->implementationVisibility();
return ImplementationVisibility::Public;
}
#if ENABLE(WEBASSEMBLY)
if (isNativeCalleeFrame())
return callee().asNativeCallee()->implementationVisibility();
#endif
if (callee().isCell()) {
if (auto* callee = this->callee().asCell()) {
if (auto* jsFunction = dynamicDowncast<JSFunction>(callee)) {
if (auto* executable = jsFunction->executable())
return executable->implementationVisibility();
return ImplementationVisibility::Public;
}
}
}
return ImplementationVisibility::Public;
}();
switch (implementationVisibility) {
case ImplementationVisibility::Public:
return false;
case ImplementationVisibility::Private:
case ImplementationVisibility::PrivateRecursive:
return true;
}
ASSERT_NOT_REACHED();
return false;
}
size_t StackVisitor::Frame::wasmFunctionIndex() const
{
ASSERT(isNativeCalleeFrame());
ASSERT(m_isWasmFrame);
return m_wasmFunctionIndex;
}
CallSiteIndex StackVisitor::Frame::wasmCallSiteIndex() const
{
return CallSiteIndex::fromBits(m_wasmCallSiteIndexBits);
}
void StackVisitor::Frame::dump(PrintStream& out, Indenter indent) const
{
dump(out, indent, [] (PrintStream&) { });
}
void StackVisitor::Frame::dump(PrintStream& out, Indenter indent, WTF::Function<void(PrintStream&)> prefix) const
{
if (!this->callFrame()) {
out.print(indent, "frame 0x0\n");
return;
}
CodeBlock* codeBlock = this->codeBlock();
out.print(indent);
prefix(out);
out.print("frame ", RawPointer(this->callFrame()), " {\n");
{
indent++;
CallFrame* callFrame = m_callFrame;
CallFrame* callerFrame = this->callerFrame();
const void* returnPC = callFrame->hasReturnPC() ? callFrame->returnPCForInspection() : nullptr;
out.print(indent, "name: ", functionName(), "\n");
out.print(indent, "sourceURL: ", sourceURL(), "\n");
bool isInlined = false;
#if ENABLE(DFG_JIT)
isInlined = isInlinedDFGFrame();
out.print(indent, "isInlinedDFGFrame: ", isInlinedDFGFrame(), "\n");
if (isInlinedDFGFrame())
out.print(indent, "InlineCallFrame: ", RawPointer(m_inlineDFGCallFrame), "\n");
#endif
out.print(indent, "callee: ", RawPointer(callee().rawPtr()), "\n");
out.print(indent, "returnPC: ", RawPointer(returnPC), "\n");
out.print(indent, "callerFrame: ", RawPointer(callerFrame), "\n");
uintptr_t locationRawBits = callFrame->callSiteAsRawBits();
out.print(indent, "rawLocationBits: ", locationRawBits,
" ", RawHex(locationRawBits), "\n");
out.print(indent, "codeBlock: ", RawPointer(codeBlock));
if (codeBlock)
out.print(" ", *codeBlock);
out.print("\n");
if (codeBlock && !isInlined) {
indent++;
if (callFrame->callSiteBitsAreBytecodeOffset()) {
BytecodeIndex bytecodeIndex = callFrame->bytecodeIndex();
out.print(indent, bytecodeIndex, " of ", codeBlock->instructions().size(), "\n");
#if ENABLE(DFG_JIT)
} else {
out.print(indent, "hasCodeOrigins: ", codeBlock->hasCodeOrigins(), "\n");
if (codeBlock->hasCodeOrigins()) {
CallSiteIndex callSiteIndex = callFrame->callSiteIndex();
out.print(indent, "callSiteIndex: ", callSiteIndex.bits(), " of ", codeBlock->codeOrigins().size(), "\n");
JITType jitType = codeBlock->jitType();
if (jitType != JITType::FTLJIT) {
RefPtr jitCode = codeBlock->jitCode();
out.print(indent, "jitCode: ", RawPointer(jitCode.get()),
" start ", RawPointer(jitCode->start()),
" end ", RawPointer(jitCode->end()), "\n");
}
}
#endif
}
auto lineColumn = computeLineAndColumn();
out.print(indent, "line: ", lineColumn.line, "\n");
out.print(indent, "column: ", lineColumn.column, "\n");
indent--;
}
out.print(indent, "EntryFrame: ", RawPointer(m_entryFrame), "\n");
indent--;
}
out.print(indent, "}\n");
}
} // namespace JSC