1 //===- DWARFDebugArangeSet.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_DWARFDEBUGARANGESET_H 11 #define LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H 12 13 #include "llvm/ADT/iterator_range.h" 14 #include "llvm/Support/DataExtractor.h" 15 #include <cstdint> 16 #include <vector> 17 18 namespace llvm { 19 20 class raw_ostream; 21 22 class DWARFDebugArangeSet { 23 public: 24 struct Header { 25 /// The total length of the entries for that set, not including the length 26 /// field itself. 27 uint32_t Length; 28 /// The offset from the beginning of the .debug_info section of the 29 /// compilation unit entry referenced by the table. 30 uint32_t CuOffset; 31 /// The DWARF version number. 32 uint16_t Version; 33 /// The size in bytes of an address on the target architecture. For segmented 34 /// addressing, this is the size of the offset portion of the address. 35 uint8_t AddrSize; 36 /// The size in bytes of a segment descriptor on the target architecture. 37 /// If the target system uses a flat address space, this value is 0. 38 uint8_t SegSize; 39 }; 40 41 struct Descriptor { 42 uint64_t Address; 43 uint64_t Length; 44 45 uint64_t getEndAddress() const { return Address + Length; } 46 }; 47 48 private: 49 using DescriptorColl = std::vector<Descriptor>; 50 using desc_iterator_range = iterator_range<DescriptorColl::const_iterator>; 51 52 uint32_t Offset; 53 Header HeaderData; 54 DescriptorColl ArangeDescriptors; 55 56 public: 57 DWARFDebugArangeSet() { clear(); } 58 59 void clear(); 60 bool extract(DataExtractor data, uint32_t *offset_ptr); 61 void dump(raw_ostream &OS) const; 62 63 uint32_t getCompileUnitDIEOffset() const { return HeaderData.CuOffset; } 64 65 const Header &getHeader() const { return HeaderData; } 66 67 desc_iterator_range descriptors() const { 68 return desc_iterator_range(ArangeDescriptors.begin(), 69 ArangeDescriptors.end()); 70 } 71 }; 72 73 } // end namespace llvm 74 75 #endif // LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H 76
