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/Support/DataExtractor.h" 14 #include <vector> 15 16 namespace llvm { 17 18 class raw_ostream; 19 20 class DWARFDebugArangeSet { 21 public: 22 struct Header { 23 // The total length of the entries for that set, not including the length 24 // field itself. 25 uint32_t Length; 26 // The offset from the beginning of the .debug_info section of the 27 // compilation unit entry referenced by the table. 28 uint32_t CuOffset; 29 // The DWARF version number. 30 uint16_t Version; 31 // The size in bytes of an address on the target architecture. For segmented 32 // addressing, this is the size of the offset portion of the address. 33 uint8_t AddrSize; 34 // The size in bytes of a segment descriptor on the target architecture. 35 // If the target system uses a flat address space, this value is 0. 36 uint8_t SegSize; 37 }; 38 39 struct Descriptor { 40 uint64_t Address; 41 uint64_t Length; 42 uint64_t getEndAddress() const { return Address + Length; } 43 }; 44 45 private: 46 typedef std::vector<Descriptor> DescriptorColl; 47 typedef DescriptorColl::iterator DescriptorIter; 48 typedef DescriptorColl::const_iterator DescriptorConstIter; 49 50 uint32_t Offset; 51 Header Header; 52 DescriptorColl ArangeDescriptors; 53 54 public: 55 DWARFDebugArangeSet() { clear(); } 56 void clear(); 57 void compact(); 58 bool extract(DataExtractor data, uint32_t *offset_ptr); 59 void dump(raw_ostream &OS) const; 60 61 uint32_t getCompileUnitDIEOffset() const { return Header.CuOffset; } 62 uint32_t getOffsetOfNextEntry() const { return Offset + Header.Length + 4; } 63 uint32_t findAddress(uint64_t address) const; 64 uint32_t getNumDescriptors() const { return ArangeDescriptors.size(); } 65 const struct Header &getHeader() const { return Header; } 66 const Descriptor *getDescriptor(uint32_t i) const { 67 if (i < ArangeDescriptors.size()) 68 return &ArangeDescriptors[i]; 69 return NULL; 70 } 71 }; 72 73 } 74 75 #endif 76
