1 //===-- Symtab.h ------------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 11 #ifndef liblldb_UnwindTable_h 12 #define liblldb_UnwindTable_h 13 14 #include <map> 15 16 #include "lldb/lldb-private.h" 17 18 namespace lldb_private { 19 20 // A class which holds all the FuncUnwinders objects for a given ObjectFile. 21 // The UnwindTable is populated with FuncUnwinders objects lazily during 22 // the debug session. 23 24 class UnwindTable 25 { 26 public: 27 UnwindTable(ObjectFile& objfile); 28 ~UnwindTable(); 29 30 lldb_private::DWARFCallFrameInfo * 31 GetEHFrameInfo (); 32 33 lldb::FuncUnwindersSP 34 GetFuncUnwindersContainingAddress (const Address& addr, SymbolContext &sc); 35 36 // Normally when we create a new FuncUnwinders object we track it in this UnwindTable so it can 37 // be reused later. But for the target modules show-unwind we want to create brand new 38 // UnwindPlans for the function of interest - so ignore any existing FuncUnwinders for that 39 // function and don't add this new one to our UnwindTable. 40 // This FuncUnwinders object does have a reference to the UnwindTable but the lifetime of this 41 // uncached FuncUnwinders is expected to be short so in practice this will not be a problem. 42 lldb::FuncUnwindersSP 43 GetUncachedFuncUnwindersContainingAddress (const Address& addr, SymbolContext &sc); 44 45 private: 46 void 47 Dump (Stream &s); 48 49 void Initialize (); 50 51 typedef std::map<lldb::addr_t, lldb::FuncUnwindersSP> collection; 52 typedef collection::iterator iterator; 53 typedef collection::const_iterator const_iterator; 54 55 ObjectFile& m_object_file; 56 collection m_unwinds; 57 58 bool m_initialized; // delay some initialization until ObjectFile is set up 59 60 UnwindAssembly* m_assembly_profiler; 61 62 DWARFCallFrameInfo* m_eh_frame; 63 64 DISALLOW_COPY_AND_ASSIGN (UnwindTable); 65 }; 66 67 } // namespace lldb_private 68 69 #endif // liblldb_UnwindTable_h 70
