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