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Side by Side Diff: runtime/vm/stack_frame.h

Issue 2392613002: Reapply "Lazy deopt without code patching." (Closed)
Patch Set: . Created 4 years, 2 months ago
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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef VM_STACK_FRAME_H_ 5 #ifndef VM_STACK_FRAME_H_
6 #define VM_STACK_FRAME_H_ 6 #define VM_STACK_FRAME_H_
7 7
8 #include "vm/allocation.h" 8 #include "vm/allocation.h"
9 #include "vm/object.h" 9 #include "vm/object.h"
10 #include "vm/stub_code.h" 10 #include "vm/stub_code.h"
(...skipping 35 matching lines...) Expand 10 before | Expand all | Expand 10 after
46 static int SavedCallerPpSlotFromFp() { 46 static int SavedCallerPpSlotFromFp() {
47 if (kSavedCallerPpSlotFromFp != kSavedCallerFpSlotFromFp) { 47 if (kSavedCallerPpSlotFromFp != kSavedCallerFpSlotFromFp) {
48 return kSavedCallerPpSlotFromFp; 48 return kSavedCallerPpSlotFromFp;
49 } 49 }
50 UNREACHABLE(); 50 UNREACHABLE();
51 return 0; 51 return 0;
52 } 52 }
53 53
54 void set_pc(uword value) { 54 void set_pc(uword value) {
55 *reinterpret_cast<uword*>(sp() + (kSavedPcSlotFromSp * kWordSize)) = value; 55 *reinterpret_cast<uword*>(sp() + (kSavedPcSlotFromSp * kWordSize)) = value;
56 pc_ = value;
56 } 57 }
57 58
58 void set_pc_marker(RawCode* code) { 59 void set_pc_marker(RawCode* code) {
59 *reinterpret_cast<RawCode**>(fp() + (kPcMarkerSlotFromFp * kWordSize)) = 60 *reinterpret_cast<RawCode**>(fp() + (kPcMarkerSlotFromFp * kWordSize)) =
60 code; 61 code;
61 } 62 }
62 63
63 // Visit objects in the frame. 64 // Visit objects in the frame.
64 virtual void VisitObjectPointers(ObjectPointerVisitor* visitor); 65 virtual void VisitObjectPointers(ObjectPointerVisitor* visitor);
65 66
(...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after
103 uword GetCallerSp() const { 104 uword GetCallerSp() const {
104 return fp() + (kCallerSpSlotFromFp * kWordSize); 105 return fp() + (kCallerSpSlotFromFp * kWordSize);
105 } 106 }
106 107
107 uword GetCallerFp() const { 108 uword GetCallerFp() const {
108 return *(reinterpret_cast<uword*>( 109 return *(reinterpret_cast<uword*>(
109 fp() + (kSavedCallerFpSlotFromFp * kWordSize))); 110 fp() + (kSavedCallerFpSlotFromFp * kWordSize)));
110 } 111 }
111 112
112 uword GetCallerPc() const { 113 uword GetCallerPc() const {
113 return *(reinterpret_cast<uword*>( 114 uword raw_pc = *(reinterpret_cast<uword*>(
114 fp() + (kSavedCallerPcSlotFromFp * kWordSize))); 115 fp() + (kSavedCallerPcSlotFromFp * kWordSize)));
116 ASSERT(raw_pc != StubCode::DeoptimizeLazyFromThrow_entry()->EntryPoint());
117 if (raw_pc == StubCode::DeoptimizeLazyFromReturn_entry()->EntryPoint()) {
118 uword fp = GetCallerFp();
119 MallocGrowableArray<PendingLazyDeopt>* pending_deopts =
120 isolate()->pending_deopts();
121 for (intptr_t i = 0; i < pending_deopts->length(); i++) {
122 if ((*pending_deopts)[i].fp() == fp) {
123 return (*pending_deopts)[i].pc();
124 }
125 }
126 UNREACHABLE();
127 }
128 return raw_pc;
115 } 129 }
116 130
117 uword fp_; 131 uword fp_;
118 uword sp_; 132 uword sp_;
119 uword pc_; 133 uword pc_;
120 Thread* thread_; 134 Thread* thread_;
121 135
122 // The iterators FrameSetIterator and StackFrameIterator set the private 136 // The iterators FrameSetIterator and StackFrameIterator set the private
123 // fields fp_ and sp_ when they return the respective frame objects. 137 // fields fp_ and sp_ when they return the respective frame objects.
124 friend class FrameSetIterator; 138 friend class FrameSetIterator;
(...skipping 247 matching lines...) Expand 10 before | Expand all | Expand 10 after
372 386
373 387
374 DART_FORCE_INLINE static uword LocalVarAddress(uword fp, intptr_t index) { 388 DART_FORCE_INLINE static uword LocalVarAddress(uword fp, intptr_t index) {
375 return fp + LocalVarIndex(0, index) * kWordSize; 389 return fp + LocalVarIndex(0, index) * kWordSize;
376 } 390 }
377 391
378 392
379 } // namespace dart 393 } // namespace dart
380 394
381 #endif // VM_STACK_FRAME_H_ 395 #endif // VM_STACK_FRAME_H_
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