1 //===-- DWARFDebugLoc.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 #ifndef LLVM_DEBUGINFO_DWARFDEBUGLOC_H 11 #define LLVM_DEBUGINFO_DWARFDEBUGLOC_H 12 13 #include "DWARFRelocMap.h" 14 #include "llvm/ADT/SmallVector.h" 15 #include "llvm/Support/DataExtractor.h" 16 17 namespace llvm { 18 19 class raw_ostream; 20 21 class DWARFDebugLoc { 22 /// A single location within a location list. 23 struct Entry { 24 /// The beginning address of the instruction range. 25 uint64_t Begin; 26 /// The ending address of the instruction range. 27 uint64_t End; 28 /// The location of the variable within the specified range. 29 SmallVector<unsigned char, 4> Loc; 30 }; 31 32 /// A list of locations that contain one variable. 33 struct LocationList { 34 /// The beginning offset where this location list is stored in the debug_loc 35 /// section. 36 unsigned Offset; 37 /// All the locations in which the variable is stored. 38 SmallVector<Entry, 2> Entries; 39 }; 40 41 typedef SmallVector<LocationList, 4> LocationLists; 42 43 /// A list of all the variables in the debug_loc section, each one describing 44 /// the locations in which the variable is stored. 45 LocationLists Locations; 46 47 /// A map used to resolve binary relocations. 48 const RelocAddrMap &RelocMap; 49 50 public: 51 DWARFDebugLoc(const RelocAddrMap &LocRelocMap) : RelocMap(LocRelocMap) {} 52 /// Print the location lists found within the debug_loc section. 53 void dump(raw_ostream &OS) const; 54 /// Parse the debug_loc section accessible via the 'data' parameter using the 55 /// specified address size to interpret the address ranges. 56 void parse(DataExtractor data, unsigned AddressSize); 57 }; 58 59 class DWARFDebugLocDWO { 60 struct Entry { 61 uint64_t Start; 62 uint32_t Length; 63 SmallVector<unsigned char, 4> Loc; 64 }; 65 66 struct LocationList { 67 unsigned Offset; 68 SmallVector<Entry, 2> Entries; 69 }; 70 71 typedef SmallVector<LocationList, 4> LocationLists; 72 73 LocationLists Locations; 74 75 public: 76 void parse(DataExtractor data); 77 void dump(raw_ostream &OS) const; 78 }; 79 } 80 81 #endif 82
