1 //===-- llvm/CodeGen/DwarfFile.h - Dwarf Debug Framework -------*- 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 CODEGEN_ASMPRINTER_DWARFFILE_H__ 11 #define CODEGEN_ASMPRINTER_DWARFFILE_H__ 12 13 #include "llvm/ADT/DenseMap.h" 14 #include "llvm/ADT/FoldingSet.h" 15 #include "llvm/ADT/SmallVector.h" 16 #include "llvm/ADT/StringMap.h" 17 #include "llvm/Support/Allocator.h" 18 #include "AddressPool.h" 19 #include "DwarfStringPool.h" 20 21 #include <vector> 22 #include <string> 23 #include <memory> 24 25 namespace llvm { 26 class AsmPrinter; 27 class DwarfUnit; 28 class DIEAbbrev; 29 class MCSymbol; 30 class DIE; 31 class StringRef; 32 class DwarfDebug; 33 class MCSection; 34 class DwarfFile { 35 // Target of Dwarf emission, used for sizing of abbreviations. 36 AsmPrinter *Asm; 37 38 // Used to uniquely define abbreviations. 39 FoldingSet<DIEAbbrev> AbbreviationsSet; 40 41 // A list of all the unique abbreviations in use. 42 std::vector<DIEAbbrev *> Abbreviations; 43 44 // A pointer to all units in the section. 45 SmallVector<std::unique_ptr<DwarfUnit>, 1> CUs; 46 47 DwarfStringPool StrPool; 48 49 public: 50 DwarfFile(AsmPrinter *AP, StringRef Pref, BumpPtrAllocator &DA); 51 52 ~DwarfFile(); 53 54 const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() { return CUs; } 55 56 /// \brief Compute the size and offset of a DIE given an incoming Offset. 57 unsigned computeSizeAndOffset(DIE &Die, unsigned Offset); 58 59 /// \brief Compute the size and offset of all the DIEs. 60 void computeSizeAndOffsets(); 61 62 /// \brief Define a unique number for the abbreviation. 63 void assignAbbrevNumber(DIEAbbrev &Abbrev); 64 65 /// \brief Add a unit to the list of CUs. 66 void addUnit(std::unique_ptr<DwarfUnit> U); 67 68 /// \brief Emit all of the units to the section listed with the given 69 /// abbreviation section. 70 void emitUnits(DwarfDebug *DD, const MCSymbol *ASectionSym); 71 72 /// \brief Emit a set of abbreviations to the specific section. 73 void emitAbbrevs(const MCSection *); 74 75 /// \brief Emit all of the strings to the section given. 76 void emitStrings(const MCSection *StrSection, 77 const MCSection *OffsetSection = nullptr, 78 const MCSymbol *StrSecSym = nullptr); 79 80 /// \brief Returns the string pool. 81 DwarfStringPool &getStringPool() { return StrPool; } 82 }; 83 } 84 #endif 85
