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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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879 | 879 |
880 class SafeStackFrameIterator: public StackFrameIteratorBase { | 880 class SafeStackFrameIterator: public StackFrameIteratorBase { |
881 public: | 881 public: |
882 SafeStackFrameIterator(Isolate* isolate, | 882 SafeStackFrameIterator(Isolate* isolate, |
883 Address fp, Address sp, | 883 Address fp, Address sp, |
884 Address low_bound, Address high_bound); | 884 Address low_bound, Address high_bound); |
885 | 885 |
886 inline JavaScriptFrame* frame() const; | 886 inline JavaScriptFrame* frame() const; |
887 void Advance(); | 887 void Advance(); |
888 | 888 |
| 889 StackFrame::Type top_frame_type() const { return top_frame_type_; } |
| 890 |
889 private: | 891 private: |
890 void AdvanceOneFrame(); | 892 void AdvanceOneFrame(); |
891 | 893 |
892 bool IsValidStackAddress(Address addr) const { | 894 bool IsValidStackAddress(Address addr) const { |
893 return low_bound_ <= addr && addr <= high_bound_; | 895 return low_bound_ <= addr && addr <= high_bound_; |
894 } | 896 } |
895 bool IsValidFrame(StackFrame* frame) const; | 897 bool IsValidFrame(StackFrame* frame) const; |
896 bool IsValidCaller(StackFrame* frame); | 898 bool IsValidCaller(StackFrame* frame); |
897 bool IsValidExitFrame(Address fp) const; | 899 bool IsValidExitFrame(Address fp) const; |
898 bool IsValidTop(ThreadLocalTop* top) const; | 900 bool IsValidTop(ThreadLocalTop* top) const; |
899 | 901 |
900 const Address low_bound_; | 902 const Address low_bound_; |
901 const Address high_bound_; | 903 const Address high_bound_; |
| 904 StackFrame::Type top_frame_type_; |
902 }; | 905 }; |
903 | 906 |
904 | 907 |
905 class StackFrameLocator BASE_EMBEDDED { | 908 class StackFrameLocator BASE_EMBEDDED { |
906 public: | 909 public: |
907 explicit StackFrameLocator(Isolate* isolate) : iterator_(isolate) {} | 910 explicit StackFrameLocator(Isolate* isolate) : iterator_(isolate) {} |
908 | 911 |
909 // Find the nth JavaScript frame on the stack. The caller must | 912 // Find the nth JavaScript frame on the stack. The caller must |
910 // guarantee that such a frame exists. | 913 // guarantee that such a frame exists. |
911 JavaScriptFrame* FindJavaScriptFrame(int n); | 914 JavaScriptFrame* FindJavaScriptFrame(int n); |
912 | 915 |
913 private: | 916 private: |
914 StackFrameIterator iterator_; | 917 StackFrameIterator iterator_; |
915 }; | 918 }; |
916 | 919 |
917 | 920 |
918 // Reads all frames on the current stack and copies them into the current | 921 // Reads all frames on the current stack and copies them into the current |
919 // zone memory. | 922 // zone memory. |
920 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); | 923 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); |
921 | 924 |
922 } } // namespace v8::internal | 925 } } // namespace v8::internal |
923 | 926 |
924 #endif // V8_FRAMES_H_ | 927 #endif // V8_FRAMES_H_ |
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