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Issue 1684073002: [Interpreter] Save and restore dispatch table pointer during calls. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@int_assm
Patch Set: Address review comments Created 4 years, 10 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 #ifndef V8_FRAMES_H_ 5 #ifndef V8_FRAMES_H_
6 #define V8_FRAMES_H_ 6 #define V8_FRAMES_H_
7 7
8 #include "src/allocation.h" 8 #include "src/allocation.h"
9 #include "src/handles.h" 9 #include "src/handles.h"
10 #include "src/safepoint-table.h" 10 #include "src/safepoint-table.h"
(...skipping 160 matching lines...) Expand 10 before | Expand all | Expand 10 after
171 171
172 static const int kFrameSize = 172 static const int kFrameSize =
173 StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize; 173 StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize;
174 }; 174 };
175 175
176 176
177 class InterpreterFrameConstants : public AllStatic { 177 class InterpreterFrameConstants : public AllStatic {
178 public: 178 public:
179 // Fixed frame includes new.target and bytecode offset. 179 // Fixed frame includes new.target and bytecode offset.
180 static const int kFixedFrameSize = 180 static const int kFixedFrameSize =
181 StandardFrameConstants::kFixedFrameSize + 2 * kPointerSize; 181 StandardFrameConstants::kFixedFrameSize + 3 * kPointerSize;
182 static const int kFixedFrameSizeFromFp = 182 static const int kFixedFrameSizeFromFp =
183 StandardFrameConstants::kFixedFrameSizeFromFp + 2 * kPointerSize; 183 StandardFrameConstants::kFixedFrameSizeFromFp + 3 * kPointerSize;
184 184
185 // FP-relative. 185 // FP-relative.
186 static const int kNewTargetFromFp =
187 -StandardFrameConstants::kFixedFrameSizeFromFp - 1 * kPointerSize;
188 static const int kDispatchTableFromFp =
189 -StandardFrameConstants::kFixedFrameSizeFromFp - 2 * kPointerSize;
186 static const int kBytecodeOffsetFromFp = 190 static const int kBytecodeOffsetFromFp =
187 -StandardFrameConstants::kFixedFrameSizeFromFp - 2 * kPointerSize; 191 -StandardFrameConstants::kFixedFrameSizeFromFp - 3 * kPointerSize;
188 static const int kRegisterFilePointerFromFp = 192 static const int kRegisterFilePointerFromFp =
189 -StandardFrameConstants::kFixedFrameSizeFromFp - 3 * kPointerSize; 193 -StandardFrameConstants::kFixedFrameSizeFromFp - 4 * kPointerSize;
190 194
191 // Expression index for {StandardFrame::GetExpressionAddress}. 195 // Expression index for {StandardFrame::GetExpressionAddress}.
192 static const int kBytecodeOffsetExpressionIndex = 1; 196 static const int kBytecodeOffsetExpressionIndex = 2;
193 static const int kRegisterFileExpressionIndex = 2; 197 static const int kRegisterFileExpressionIndex = 3;
194 198
195 // Register file pointer relative. 199 // Register file pointer relative.
196 static const int kLastParamFromRegisterPointer = 200 static const int kLastParamFromRegisterPointer =
197 StandardFrameConstants::kFixedFrameSize + 3 * kPointerSize; 201 StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize;
198 202
199 static const int kBytecodeOffsetFromRegisterPointer = 1 * kPointerSize; 203 static const int kBytecodeOffsetFromRegisterPointer = 1 * kPointerSize;
200 static const int kNewTargetFromRegisterPointer = 2 * kPointerSize; 204 static const int kDispatchTableFromRegisterPointer = 2 * kPointerSize;
201 static const int kFunctionFromRegisterPointer = 3 * kPointerSize; 205 static const int kNewTargetFromRegisterPointer = 3 * kPointerSize;
202 static const int kContextFromRegisterPointer = 4 * kPointerSize; 206 static const int kFunctionFromRegisterPointer = 4 * kPointerSize;
207 static const int kContextFromRegisterPointer = 5 * kPointerSize;
203 }; 208 };
204 209
205 210
206 // Abstract base class for all stack frames. 211 // Abstract base class for all stack frames.
207 class StackFrame BASE_EMBEDDED { 212 class StackFrame BASE_EMBEDDED {
208 public: 213 public:
209 #define DECLARE_TYPE(type, ignore) type, 214 #define DECLARE_TYPE(type, ignore) type,
210 enum Type { 215 enum Type {
211 NONE = 0, 216 NONE = 0,
212 STACK_FRAME_TYPE_LIST(DECLARE_TYPE) 217 STACK_FRAME_TYPE_LIST(DECLARE_TYPE)
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716 friend class StackFrameIteratorBase; 721 friend class StackFrameIteratorBase;
717 722
718 Object* StackSlotAt(int index) const; 723 Object* StackSlotAt(int index) const;
719 }; 724 };
720 725
721 726
722 class InterpretedFrame : public JavaScriptFrame { 727 class InterpretedFrame : public JavaScriptFrame {
723 public: 728 public:
724 Type type() const override { return INTERPRETED; } 729 Type type() const override { return INTERPRETED; }
725 730
731 // GC support.
732 void Iterate(ObjectVisitor* v) const override;
733
726 // Lookup exception handler for current {pc}, returns -1 if none found. 734 // Lookup exception handler for current {pc}, returns -1 if none found.
727 int LookupExceptionHandlerInTable( 735 int LookupExceptionHandlerInTable(
728 int* data, HandlerTable::CatchPrediction* prediction) override; 736 int* data, HandlerTable::CatchPrediction* prediction) override;
729 737
730 // Returns the current offset into the bytecode stream. 738 // Returns the current offset into the bytecode stream.
731 int GetBytecodeOffset() const; 739 int GetBytecodeOffset() const;
732 740
733 // Updates the current offset into the bytecode stream, mainly used for stack 741 // Updates the current offset into the bytecode stream, mainly used for stack
734 // unwinding to continue execution at a different bytecode offset. 742 // unwinding to continue execution at a different bytecode offset.
735 void PatchBytecodeOffset(int new_offset); 743 void PatchBytecodeOffset(int new_offset);
736 744
745 // Returns the current dispatch table pointer.
746 Address GetDispatchTable() const;
747
748 // Updates the current dispatch table pointer with |dispatch_table|. Used by
749 // the debugger to swap execution onto the debugger dispatch table.
750 void PatchDispatchTable(Address dispatch_table);
751
737 // Access to the interpreter register file for this frame. 752 // Access to the interpreter register file for this frame.
738 Object* GetInterpreterRegister(int register_index) const; 753 Object* GetInterpreterRegister(int register_index) const;
739 754
740 // Build a list with summaries for this frame including all inlined frames. 755 // Build a list with summaries for this frame including all inlined frames.
741 void Summarize(List<FrameSummary>* frames) override; 756 void Summarize(List<FrameSummary>* frames) override;
742 757
743 protected: 758 protected:
744 inline explicit InterpretedFrame(StackFrameIteratorBase* iterator); 759 inline explicit InterpretedFrame(StackFrameIteratorBase* iterator);
745 760
746 private: 761 private:
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992 1007
993 1008
994 // Reads all frames on the current stack and copies them into the current 1009 // Reads all frames on the current stack and copies them into the current
995 // zone memory. 1010 // zone memory.
996 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); 1011 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone);
997 1012
998 } // namespace internal 1013 } // namespace internal
999 } // namespace v8 1014 } // namespace v8
1000 1015
1001 #endif // V8_FRAMES_H_ 1016 #endif // V8_FRAMES_H_
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