Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_DEBUG_DEBUG_FRAMES_H_ |
| 6 | #define V8_DEBUG_DEBUG_FRAMES_H_ |
| 7 | |
| 8 | #include "src/deoptimizer.h" |
| 9 | #include "src/frames.h" |
| 10 | #include "src/isolate.h" |
| 11 | #include "src/objects.h" |
| 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | class FrameInspector { |
| 17 | public: |
| 18 | FrameInspector(JavaScriptFrame* frame, int inlined_jsframe_index, |
| 19 | Isolate* isolate); |
| 20 | |
| 21 | ~FrameInspector(); |
| 22 | |
| 23 | int GetParametersCount(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 24 | Handle<Object> GetFunction(); |
| 25 | Handle<Object> GetParameter(int index); |
| 26 | Handle<Object> GetExpression(int index); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 27 | int GetSourcePosition(); |
| 28 | bool IsConstructor(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 29 | Handle<Object> GetContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 30 | |
| 31 | JavaScriptFrame* GetArgumentsFrame() { return frame_; } |
| 32 | void SetArgumentsFrame(JavaScriptFrame* frame); |
| 33 | |
| 34 | void MaterializeStackLocals(Handle<JSObject> target, |
| 35 | Handle<ScopeInfo> scope_info); |
| 36 | |
| 37 | void MaterializeStackLocals(Handle<JSObject> target, |
| 38 | Handle<JSFunction> function); |
| 39 | |
| 40 | void UpdateStackLocalsFromMaterializedObject(Handle<JSObject> object, |
| 41 | Handle<ScopeInfo> scope_info); |
| 42 | |
| 43 | private: |
| 44 | bool ParameterIsShadowedByContextLocal(Handle<ScopeInfo> info, |
| 45 | Handle<String> parameter_name); |
| 46 | |
| 47 | JavaScriptFrame* frame_; |
| 48 | DeoptimizedFrameInfo* deoptimized_frame_; |
| 49 | Isolate* isolate_; |
| 50 | bool is_optimized_; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 51 | bool is_interpreted_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 52 | bool is_bottommost_; |
| 53 | bool has_adapted_arguments_; |
| 54 | |
| 55 | DISALLOW_COPY_AND_ASSIGN(FrameInspector); |
| 56 | }; |
| 57 | |
| 58 | |
| 59 | class DebugFrameHelper : public AllStatic { |
| 60 | public: |
| 61 | static SaveContext* FindSavedContextForFrame(Isolate* isolate, |
| 62 | JavaScriptFrame* frame); |
| 63 | // Advances the iterator to the frame that matches the index and returns the |
| 64 | // inlined frame index, or -1 if not found. Skips native JS functions. |
| 65 | static int FindIndexedNonNativeFrame(JavaScriptFrameIterator* it, int index); |
| 66 | |
| 67 | // Helper functions for wrapping and unwrapping stack frame ids. |
| 68 | static Smi* WrapFrameId(StackFrame::Id id) { |
| 69 | DCHECK(IsAligned(OffsetFrom(id), static_cast<intptr_t>(4))); |
| 70 | return Smi::FromInt(id >> 2); |
| 71 | } |
| 72 | |
| 73 | static StackFrame::Id UnwrapFrameId(int wrapped) { |
| 74 | return static_cast<StackFrame::Id>(wrapped << 2); |
| 75 | } |
| 76 | }; |
| 77 | |
| 78 | } // namespace internal |
| 79 | } // namespace v8 |
| 80 | |
| 81 | #endif // V8_DEBUG_DEBUG_FRAMES_H_ |