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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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36 #include "safepoint-table.h" | 36 #include "safepoint-table.h" |
37 #include "scopeinfo.h" | 37 #include "scopeinfo.h" |
38 #include "string-stream.h" | 38 #include "string-stream.h" |
39 | 39 |
40 #include "allocation-inl.h" | 40 #include "allocation-inl.h" |
41 | 41 |
42 namespace v8 { | 42 namespace v8 { |
43 namespace internal { | 43 namespace internal { |
44 | 44 |
45 | 45 |
46 static ReturnAddressLocationResolver return_address_location_resolver = NULL; | 46 ReturnAddressLocationResolver |
47 | 47 StackFrame::return_address_location_resolver_ = NULL; |
48 | |
49 // Resolves pc_address through the resolution address function if one is set. | |
50 static inline Address* ResolveReturnAddressLocation(Address* pc_address) { | |
51 if (return_address_location_resolver == NULL) { | |
52 return pc_address; | |
53 } else { | |
54 return reinterpret_cast<Address*>( | |
55 return_address_location_resolver( | |
56 reinterpret_cast<uintptr_t>(pc_address))); | |
57 } | |
58 } | |
59 | 48 |
60 | 49 |
61 // Iterator that supports traversing the stack handlers of a | 50 // Iterator that supports traversing the stack handlers of a |
62 // particular frame. Needs to know the top of the handler chain. | 51 // particular frame. Needs to know the top of the handler chain. |
63 class StackHandlerIterator BASE_EMBEDDED { | 52 class StackHandlerIterator BASE_EMBEDDED { |
64 public: | 53 public: |
65 StackHandlerIterator(const StackFrame* frame, StackHandler* handler) | 54 StackHandlerIterator(const StackFrame* frame, StackHandler* handler) |
66 : limit_(frame->fp()), handler_(handler) { | 55 : limit_(frame->fp()), handler_(handler) { |
67 // Make sure the handler has already been unwound to this frame. | 56 // Make sure the handler has already been unwound to this frame. |
68 ASSERT(frame->sp() <= handler->address()); | 57 ASSERT(frame->sp() <= handler->address()); |
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232 low_bound_(low_bound), high_bound_(high_bound) { | 221 low_bound_(low_bound), high_bound_(high_bound) { |
233 StackFrame::State state; | 222 StackFrame::State state; |
234 StackFrame::Type type; | 223 StackFrame::Type type; |
235 ThreadLocalTop* top = isolate->thread_local_top(); | 224 ThreadLocalTop* top = isolate->thread_local_top(); |
236 if (IsValidTop(top)) { | 225 if (IsValidTop(top)) { |
237 type = ExitFrame::GetStateForFramePointer(Isolate::c_entry_fp(top), &state); | 226 type = ExitFrame::GetStateForFramePointer(Isolate::c_entry_fp(top), &state); |
238 } else if (IsValidStackAddress(fp)) { | 227 } else if (IsValidStackAddress(fp)) { |
239 ASSERT(fp != NULL); | 228 ASSERT(fp != NULL); |
240 state.fp = fp; | 229 state.fp = fp; |
241 state.sp = sp; | 230 state.sp = sp; |
242 state.pc_address = ResolveReturnAddressLocation( | 231 state.pc_address = StackFrame::ResolveReturnAddressLocation( |
243 reinterpret_cast<Address*>(StandardFrame::ComputePCAddress(fp))); | 232 reinterpret_cast<Address*>(StandardFrame::ComputePCAddress(fp))); |
244 type = StackFrame::ComputeType(this, &state); | 233 type = StackFrame::ComputeType(this, &state); |
245 } else { | 234 } else { |
246 return; | 235 return; |
247 } | 236 } |
248 if (SingletonFor(type) == NULL) return; | 237 if (SingletonFor(type) == NULL) return; |
249 frame_ = SingletonFor(type, &state); | 238 frame_ = SingletonFor(type, &state); |
250 | 239 |
251 if (!done()) Advance(); | 240 if (!done()) Advance(); |
252 } | 241 } |
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382 if (code != holder) { | 371 if (code != holder) { |
383 holder = reinterpret_cast<Code*>(code); | 372 holder = reinterpret_cast<Code*>(code); |
384 pc = holder->instruction_start() + pc_offset; | 373 pc = holder->instruction_start() + pc_offset; |
385 *pc_address = pc; | 374 *pc_address = pc; |
386 } | 375 } |
387 } | 376 } |
388 | 377 |
389 | 378 |
390 void StackFrame::SetReturnAddressLocationResolver( | 379 void StackFrame::SetReturnAddressLocationResolver( |
391 ReturnAddressLocationResolver resolver) { | 380 ReturnAddressLocationResolver resolver) { |
392 ASSERT(return_address_location_resolver == NULL); | 381 ASSERT(return_address_location_resolver_ == NULL); |
393 return_address_location_resolver = resolver; | 382 return_address_location_resolver_ = resolver; |
394 } | 383 } |
395 | 384 |
396 | 385 |
397 StackFrame::Type StackFrame::ComputeType(const StackFrameIteratorBase* iterator, | 386 StackFrame::Type StackFrame::ComputeType(const StackFrameIteratorBase* iterator, |
398 State* state) { | 387 State* state) { |
399 ASSERT(state->fp != NULL); | 388 ASSERT(state->fp != NULL); |
400 if (StandardFrame::IsArgumentsAdaptorFrame(state->fp)) { | 389 if (StandardFrame::IsArgumentsAdaptorFrame(state->fp)) { |
401 return ARGUMENTS_ADAPTOR; | 390 return ARGUMENTS_ADAPTOR; |
402 } | 391 } |
403 // The marker and function offsets overlap. If the marker isn't a | 392 // The marker and function offsets overlap. If the marker isn't a |
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1596 ZoneList<StackFrame*> list(10, zone); | 1585 ZoneList<StackFrame*> list(10, zone); |
1597 for (StackFrameIterator it(isolate); !it.done(); it.Advance()) { | 1586 for (StackFrameIterator it(isolate); !it.done(); it.Advance()) { |
1598 StackFrame* frame = AllocateFrameCopy(it.frame(), zone); | 1587 StackFrame* frame = AllocateFrameCopy(it.frame(), zone); |
1599 list.Add(frame, zone); | 1588 list.Add(frame, zone); |
1600 } | 1589 } |
1601 return list.ToVector(); | 1590 return list.ToVector(); |
1602 } | 1591 } |
1603 | 1592 |
1604 | 1593 |
1605 } } // namespace v8::internal | 1594 } } // namespace v8::internal |
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