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Issue 1854713002: Correctly annotate eval origin. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: fix mips64 Created 4 years, 8 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/debug/debug.h" 5 #include "src/debug/debug.h"
6 6
7 #include "src/api.h" 7 #include "src/api.h"
8 #include "src/arguments.h" 8 #include "src/arguments.h"
9 #include "src/bootstrapper.h" 9 #include "src/bootstrapper.h"
10 #include "src/code-stubs.h" 10 #include "src/code-stubs.h"
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242 242
243 // Find the break point at the supplied address, or the closest one before 243 // Find the break point at the supplied address, or the closest one before
244 // the address. 244 // the address.
245 BreakLocation BreakLocation::FromCodeOffset(Handle<DebugInfo> debug_info, 245 BreakLocation BreakLocation::FromCodeOffset(Handle<DebugInfo> debug_info,
246 int offset) { 246 int offset) {
247 base::SmartPointer<Iterator> it(GetIterator(debug_info)); 247 base::SmartPointer<Iterator> it(GetIterator(debug_info));
248 it->SkipTo(BreakIndexFromCodeOffset(debug_info, offset)); 248 it->SkipTo(BreakIndexFromCodeOffset(debug_info, offset));
249 return it->GetBreakLocation(); 249 return it->GetBreakLocation();
250 } 250 }
251 251
252 FrameSummary GetFirstFrameSummary(JavaScriptFrame* frame) {
253 List<FrameSummary> frames(FLAG_max_inlining_levels + 1);
254 frame->Summarize(&frames);
255 return frames.first();
256 }
257
258 int CallOffsetFromCodeOffset(int code_offset, bool is_interpreted) { 252 int CallOffsetFromCodeOffset(int code_offset, bool is_interpreted) {
259 // Code offset points to the instruction after the call. Subtract 1 to 253 // Code offset points to the instruction after the call. Subtract 1 to
260 // exclude that instruction from the search. For bytecode, the code offset 254 // exclude that instruction from the search. For bytecode, the code offset
261 // still points to the call. 255 // still points to the call.
262 return is_interpreted ? code_offset : code_offset - 1; 256 return is_interpreted ? code_offset : code_offset - 1;
263 } 257 }
264 258
265 BreakLocation BreakLocation::FromFrame(Handle<DebugInfo> debug_info, 259 BreakLocation BreakLocation::FromFrame(Handle<DebugInfo> debug_info,
266 JavaScriptFrame* frame) { 260 JavaScriptFrame* frame) {
267 FrameSummary summary = GetFirstFrameSummary(frame); 261 FrameSummary summary = FrameSummary::GetFirst(frame);
268 int call_offset = 262 int call_offset =
269 CallOffsetFromCodeOffset(summary.code_offset(), frame->is_interpreted()); 263 CallOffsetFromCodeOffset(summary.code_offset(), frame->is_interpreted());
270 return FromCodeOffset(debug_info, call_offset); 264 return FromCodeOffset(debug_info, call_offset);
271 } 265 }
272 266
273 void BreakLocation::AllForStatementPosition(Handle<DebugInfo> debug_info, 267 void BreakLocation::AllForStatementPosition(Handle<DebugInfo> debug_info,
274 int statement_position, 268 int statement_position,
275 List<BreakLocation>* result_out) { 269 List<BreakLocation>* result_out) {
276 for (base::SmartPointer<Iterator> it(GetIterator(debug_info)); !it->Done(); 270 for (base::SmartPointer<Iterator> it(GetIterator(debug_info)); !it->Done();
277 it->Next()) { 271 it->Next()) {
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610 return; 604 return;
611 case StepOut: 605 case StepOut:
612 // Step out has not reached the target frame yet. 606 // Step out has not reached the target frame yet.
613 if (current_fp < target_fp) return; 607 if (current_fp < target_fp) return;
614 break; 608 break;
615 case StepNext: 609 case StepNext:
616 // Step next should not break in a deeper frame. 610 // Step next should not break in a deeper frame.
617 if (current_fp < target_fp) return; 611 if (current_fp < target_fp) return;
618 // Fall through. 612 // Fall through.
619 case StepIn: { 613 case StepIn: {
620 FrameSummary summary = GetFirstFrameSummary(frame); 614 FrameSummary summary = FrameSummary::GetFirst(frame);
621 int offset = summary.code_offset(); 615 int offset = summary.code_offset();
622 step_break = location.IsReturn() || (current_fp != last_fp) || 616 step_break = location.IsReturn() || (current_fp != last_fp) ||
623 (thread_local_.last_statement_position_ != 617 (thread_local_.last_statement_position_ !=
624 location.abstract_code()->SourceStatementPosition(offset)); 618 location.abstract_code()->SourceStatementPosition(offset));
625 break; 619 break;
626 } 620 }
627 case StepFrame: 621 case StepFrame:
628 step_break = current_fp != last_fp; 622 step_break = current_fp != last_fp;
629 break; 623 break;
630 } 624 }
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989 // Step out: Find the calling JavaScript frame and flood it with 983 // Step out: Find the calling JavaScript frame and flood it with
990 // breakpoints. 984 // breakpoints.
991 frames_it.Advance(); 985 frames_it.Advance();
992 // Fill the function to return to with one-shot break points. 986 // Fill the function to return to with one-shot break points.
993 JSFunction* function = frames_it.frame()->function(); 987 JSFunction* function = frames_it.frame()->function();
994 FloodWithOneShot(Handle<JSFunction>(function)); 988 FloodWithOneShot(Handle<JSFunction>(function));
995 return; 989 return;
996 } 990 }
997 991
998 // Get the debug info (create it if it does not exist). 992 // Get the debug info (create it if it does not exist).
999 FrameSummary summary = GetFirstFrameSummary(frame); 993 FrameSummary summary = FrameSummary::GetFirst(frame);
1000 Handle<JSFunction> function(summary.function()); 994 Handle<JSFunction> function(summary.function());
1001 Handle<SharedFunctionInfo> shared(function->shared()); 995 Handle<SharedFunctionInfo> shared(function->shared());
1002 if (!EnsureDebugInfo(shared, function)) { 996 if (!EnsureDebugInfo(shared, function)) {
1003 // Return if ensuring debug info failed. 997 // Return if ensuring debug info failed.
1004 return; 998 return;
1005 } 999 }
1006 1000
1007 Handle<DebugInfo> debug_info(shared->GetDebugInfo()); 1001 Handle<DebugInfo> debug_info(shared->GetDebugInfo());
1008 // Refresh frame summary if the code has been recompiled for debugging. 1002 // Refresh frame summary if the code has been recompiled for debugging.
1009 if (AbstractCode::cast(shared->code()) != *summary.abstract_code()) { 1003 if (AbstractCode::cast(shared->code()) != *summary.abstract_code()) {
1010 summary = GetFirstFrameSummary(frame); 1004 summary = FrameSummary::GetFirst(frame);
1011 } 1005 }
1012 1006
1013 int call_offset = 1007 int call_offset =
1014 CallOffsetFromCodeOffset(summary.code_offset(), frame->is_interpreted()); 1008 CallOffsetFromCodeOffset(summary.code_offset(), frame->is_interpreted());
1015 BreakLocation location = 1009 BreakLocation location =
1016 BreakLocation::FromCodeOffset(debug_info, call_offset); 1010 BreakLocation::FromCodeOffset(debug_info, call_offset);
1017 1011
1018 // At a return statement we will step out either way. 1012 // At a return statement we will step out either way.
1019 if (location.IsReturn()) step_action = StepOut; 1013 if (location.IsReturn()) step_action = StepOut;
1020 1014
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1580 HandleScope scope(isolate_); 1574 HandleScope scope(isolate_);
1581 1575
1582 // Get the executing function in which the debug break occurred. 1576 // Get the executing function in which the debug break occurred.
1583 Handle<JSFunction> function(JSFunction::cast(frame->function())); 1577 Handle<JSFunction> function(JSFunction::cast(frame->function()));
1584 Handle<SharedFunctionInfo> shared(function->shared()); 1578 Handle<SharedFunctionInfo> shared(function->shared());
1585 1579
1586 // With no debug info there are no break points, so we can't be at a return. 1580 // With no debug info there are no break points, so we can't be at a return.
1587 if (!shared->HasDebugInfo()) return false; 1581 if (!shared->HasDebugInfo()) return false;
1588 1582
1589 DCHECK(!frame->is_optimized()); 1583 DCHECK(!frame->is_optimized());
1590 FrameSummary summary = GetFirstFrameSummary(frame); 1584 FrameSummary summary = FrameSummary::GetFirst(frame);
1591 1585
1592 Handle<DebugInfo> debug_info(shared->GetDebugInfo()); 1586 Handle<DebugInfo> debug_info(shared->GetDebugInfo());
1593 BreakLocation location = 1587 BreakLocation location =
1594 BreakLocation::FromCodeOffset(debug_info, summary.code_offset()); 1588 BreakLocation::FromCodeOffset(debug_info, summary.code_offset());
1595 return location.IsReturn(); 1589 return location.IsReturn();
1596 } 1590 }
1597 1591
1598 1592
1599 void Debug::FramesHaveBeenDropped(StackFrame::Id new_break_frame_id, 1593 void Debug::FramesHaveBeenDropped(StackFrame::Id new_break_frame_id,
1600 LiveEdit::FrameDropMode mode) { 1594 LiveEdit::FrameDropMode mode) {
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1632 Script* script; 1626 Script* script;
1633 while ((script = iterator.Next())) { 1627 while ((script = iterator.Next())) {
1634 if (script->HasValidSource()) results->set(length++, script); 1628 if (script->HasValidSource()) results->set(length++, script);
1635 } 1629 }
1636 } 1630 }
1637 results->Shrink(length); 1631 results->Shrink(length);
1638 return results; 1632 return results;
1639 } 1633 }
1640 1634
1641 1635
1642 void Debug::RecordEvalCaller(Handle<Script> script) {
1643 script->set_compilation_type(Script::COMPILATION_TYPE_EVAL);
1644 // For eval scripts add information on the function from which eval was
1645 // called.
1646 StackTraceFrameIterator it(script->GetIsolate());
1647 if (!it.done()) {
1648 script->set_eval_from_shared(it.frame()->function()->shared());
1649 Code* code = it.frame()->LookupCode();
1650 int offset = static_cast<int>(
1651 it.frame()->pc() - code->instruction_start());
1652 script->set_eval_from_instructions_offset(offset);
1653 }
1654 }
1655
1656
1657 MaybeHandle<Object> Debug::MakeExecutionState() { 1636 MaybeHandle<Object> Debug::MakeExecutionState() {
1658 // Create the execution state object. 1637 // Create the execution state object.
1659 Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()) }; 1638 Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()) };
1660 return CallFunction("MakeExecutionState", arraysize(argv), argv); 1639 return CallFunction("MakeExecutionState", arraysize(argv), argv);
1661 } 1640 }
1662 1641
1663 1642
1664 MaybeHandle<Object> Debug::MakeBreakEvent(Handle<Object> break_points_hit) { 1643 MaybeHandle<Object> Debug::MakeBreakEvent(Handle<Object> break_points_hit) {
1665 // Create the new break event object. 1644 // Create the new break event object.
1666 Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()), 1645 Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()),
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2263 OnDebugBreak(isolate_->factory()->undefined_value(), debug_command_only); 2242 OnDebugBreak(isolate_->factory()->undefined_value(), debug_command_only);
2264 } 2243 }
2265 2244
2266 #ifdef DEBUG 2245 #ifdef DEBUG
2267 void Debug::PrintBreakLocation() { 2246 void Debug::PrintBreakLocation() {
2268 if (!FLAG_print_break_location) return; 2247 if (!FLAG_print_break_location) return;
2269 HandleScope scope(isolate_); 2248 HandleScope scope(isolate_);
2270 JavaScriptFrameIterator iterator(isolate_); 2249 JavaScriptFrameIterator iterator(isolate_);
2271 if (iterator.done()) return; 2250 if (iterator.done()) return;
2272 JavaScriptFrame* frame = iterator.frame(); 2251 JavaScriptFrame* frame = iterator.frame();
2273 FrameSummary summary = GetFirstFrameSummary(frame); 2252 FrameSummary summary = FrameSummary::GetFirst(frame);
2274 int source_position = 2253 int source_position =
2275 summary.abstract_code()->SourcePosition(summary.code_offset()); 2254 summary.abstract_code()->SourcePosition(summary.code_offset());
2276 Handle<Object> script_obj(summary.function()->shared()->script(), isolate_); 2255 Handle<Object> script_obj(summary.function()->shared()->script(), isolate_);
2277 PrintF("[debug] break in function '"); 2256 PrintF("[debug] break in function '");
2278 summary.function()->PrintName(); 2257 summary.function()->PrintName();
2279 PrintF("'.\n"); 2258 PrintF("'.\n");
2280 if (script_obj->IsScript()) { 2259 if (script_obj->IsScript()) {
2281 Handle<Script> script = Handle<Script>::cast(script_obj); 2260 Handle<Script> script = Handle<Script>::cast(script_obj);
2282 Handle<String> source(String::cast(script->source())); 2261 Handle<String> source(String::cast(script->source()));
2283 Script::InitLineEnds(script); 2262 Script::InitLineEnds(script);
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2607 } 2586 }
2608 2587
2609 2588
2610 void LockingCommandMessageQueue::Clear() { 2589 void LockingCommandMessageQueue::Clear() {
2611 base::LockGuard<base::Mutex> lock_guard(&mutex_); 2590 base::LockGuard<base::Mutex> lock_guard(&mutex_);
2612 queue_.Clear(); 2591 queue_.Clear();
2613 } 2592 }
2614 2593
2615 } // namespace internal 2594 } // namespace internal
2616 } // namespace v8 2595 } // namespace v8
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