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Diffstat (limited to 'gnu/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h')
| -rw-r--r-- | gnu/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/gnu/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h b/gnu/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h deleted file mode 100644 index a59ebb7c146..00000000000 --- a/gnu/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h +++ /dev/null @@ -1,384 +0,0 @@ -//===-- llvm/CodeGen/DwarfUnit.h - Dwarf Compile Unit ---*- C++ -*--===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file contains support for writing dwarf compile unit. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFUNIT_H -#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFUNIT_H - -#include "DwarfDebug.h" -#include "llvm/ADT/DenseMap.h" -#include "llvm/ADT/Optional.h" -#include "llvm/ADT/StringMap.h" -#include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/CodeGen/DIE.h" -#include "llvm/IR/DIBuilder.h" -#include "llvm/IR/DebugInfo.h" -#include "llvm/MC/MCDwarf.h" -#include "llvm/MC/MCExpr.h" -#include "llvm/MC/MCSection.h" - -namespace llvm { - -class MachineLocation; -class MachineOperand; -class ConstantInt; -class ConstantFP; -class DbgVariable; -class DwarfCompileUnit; - -//===----------------------------------------------------------------------===// -/// This dwarf writer support class manages information associated with a -/// source file. -class DwarfUnit : public DIEUnit { -protected: - /// MDNode for the compile unit. - const DICompileUnit *CUNode; - - // All DIEValues are allocated through this allocator. - BumpPtrAllocator DIEValueAllocator; - - /// Target of Dwarf emission. - AsmPrinter *Asm; - - /// Emitted at the end of the CU and used to compute the CU Length field. - MCSymbol *EndLabel = nullptr; - - // Holders for some common dwarf information. - DwarfDebug *DD; - DwarfFile *DU; - - /// An anonymous type for index type. Owned by DIEUnit. - DIE *IndexTyDie; - - /// Tracks the mapping of unit level debug information variables to debug - /// information entries. - DenseMap<const MDNode *, DIE *> MDNodeToDieMap; - - /// A list of all the DIEBlocks in use. - std::vector<DIEBlock *> DIEBlocks; - - /// A list of all the DIELocs in use. - std::vector<DIELoc *> DIELocs; - - /// This map is used to keep track of subprogram DIEs that need - /// DW_AT_containing_type attribute. This attribute points to a DIE that - /// corresponds to the MDNode mapped with the subprogram DIE. - DenseMap<DIE *, const DINode *> ContainingTypeMap; - - DwarfUnit(dwarf::Tag, const DICompileUnit *Node, AsmPrinter *A, DwarfDebug *DW, - DwarfFile *DWU); - - bool applySubprogramDefinitionAttributes(const DISubprogram *SP, DIE &SPDie); - - bool shareAcrossDWOCUs() const; - bool isShareableAcrossCUs(const DINode *D) const; - -public: - // Accessors. - AsmPrinter* getAsmPrinter() const { return Asm; } - MCSymbol *getEndLabel() const { return EndLabel; } - uint16_t getLanguage() const { return CUNode->getSourceLanguage(); } - const DICompileUnit *getCUNode() const { return CUNode; } - - uint16_t getDwarfVersion() const { return DD->getDwarfVersion(); } - - /// Return true if this compile unit has something to write out. - bool hasContent() const { return getUnitDie().hasChildren(); } - - /// Get string containing language specific context for a global name. - /// - /// Walks the metadata parent chain in a language specific manner (using the - /// compile unit language) and returns it as a string. This is done at the - /// metadata level because DIEs may not currently have been added to the - /// parent context and walking the DIEs looking for names is more expensive - /// than walking the metadata. - std::string getParentContextString(const DIScope *Context) const; - - /// Add a new global name to the compile unit. - virtual void addGlobalName(StringRef Name, const DIE &Die, - const DIScope *Context) = 0; - - /// Add a new global type to the compile unit. - virtual void addGlobalType(const DIType *Ty, const DIE &Die, - const DIScope *Context) = 0; - - /// Returns the DIE map slot for the specified debug variable. - /// - /// We delegate the request to DwarfDebug when the MDNode can be part of the - /// type system, since DIEs for the type system can be shared across CUs and - /// the mappings are kept in DwarfDebug. - DIE *getDIE(const DINode *D) const; - - /// Returns a fresh newly allocated DIELoc. - DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc; } - - /// Insert DIE into the map. - /// - /// We delegate the request to DwarfDebug when the MDNode can be part of the - /// type system, since DIEs for the type system can be shared across CUs and - /// the mappings are kept in DwarfDebug. - void insertDIE(const DINode *Desc, DIE *D); - - /// Add a flag that is true to the DIE. - void addFlag(DIE &Die, dwarf::Attribute Attribute); - - /// Add an unsigned integer attribute data and value. - void addUInt(DIEValueList &Die, dwarf::Attribute Attribute, - Optional<dwarf::Form> Form, uint64_t Integer); - - void addUInt(DIEValueList &Block, dwarf::Form Form, uint64_t Integer); - - /// Add an signed integer attribute data and value. - void addSInt(DIEValueList &Die, dwarf::Attribute Attribute, - Optional<dwarf::Form> Form, int64_t Integer); - - void addSInt(DIELoc &Die, Optional<dwarf::Form> Form, int64_t Integer); - - /// Add a string attribute data and value. - /// - /// We always emit a reference to the string pool instead of immediate - /// strings so that DIEs have more predictable sizes. In the case of split - /// dwarf we emit an index into another table which gets us the static offset - /// into the string table. - void addString(DIE &Die, dwarf::Attribute Attribute, StringRef Str); - - /// Add a Dwarf label attribute data and value. - DIEValueList::value_iterator addLabel(DIEValueList &Die, - dwarf::Attribute Attribute, - dwarf::Form Form, - const MCSymbol *Label); - - void addLabel(DIELoc &Die, dwarf::Form Form, const MCSymbol *Label); - - /// Add an offset into a section attribute data and value. - void addSectionOffset(DIE &Die, dwarf::Attribute Attribute, uint64_t Integer); - - /// Add a dwarf op address data and value using the form given and an - /// op of either DW_FORM_addr or DW_FORM_GNU_addr_index. - void addOpAddress(DIELoc &Die, const MCSymbol *Sym); - - /// Add a label delta attribute data and value. - void addLabelDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi, - const MCSymbol *Lo); - - /// Add a DIE attribute data and value. - void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry); - - /// Add a DIE attribute data and value. - void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIEEntry Entry); - - /// Add a type's DW_AT_signature and set the declaration flag. - void addDIETypeSignature(DIE &Die, uint64_t Signature); - - /// Add block data. - void addBlock(DIE &Die, dwarf::Attribute Attribute, DIELoc *Loc); - - /// Add block data. - void addBlock(DIE &Die, dwarf::Attribute Attribute, DIEBlock *Block); - - /// Add location information to specified debug information entry. - void addSourceLine(DIE &Die, unsigned Line, const DIFile *File); - void addSourceLine(DIE &Die, const DILocalVariable *V); - void addSourceLine(DIE &Die, const DIGlobalVariable *G); - void addSourceLine(DIE &Die, const DISubprogram *SP); - void addSourceLine(DIE &Die, const DILabel *L); - void addSourceLine(DIE &Die, const DIType *Ty); - void addSourceLine(DIE &Die, const DIObjCProperty *Ty); - - /// Add constant value entry in variable DIE. - void addConstantValue(DIE &Die, const MachineOperand &MO, const DIType *Ty); - void addConstantValue(DIE &Die, const ConstantInt *CI, const DIType *Ty); - void addConstantValue(DIE &Die, const APInt &Val, const DIType *Ty); - void addConstantValue(DIE &Die, const APInt &Val, bool Unsigned); - void addConstantValue(DIE &Die, bool Unsigned, uint64_t Val); - - /// Add constant value entry in variable DIE. - void addConstantFPValue(DIE &Die, const MachineOperand &MO); - void addConstantFPValue(DIE &Die, const ConstantFP *CFP); - - /// Add a linkage name, if it isn't empty. - void addLinkageName(DIE &Die, StringRef LinkageName); - - /// Add template parameters in buffer. - void addTemplateParams(DIE &Buffer, DINodeArray TParams); - - /// Add thrown types. - void addThrownTypes(DIE &Die, DINodeArray ThrownTypes); - - // FIXME: Should be reformulated in terms of addComplexAddress. - /// Start with the address based on the location provided, and generate the - /// DWARF information necessary to find the actual Block variable (navigating - /// the Block struct) based on the starting location. Add the DWARF - /// information to the die. Obsolete, please use addComplexAddress instead. - void addBlockByrefAddress(const DbgVariable &DV, DIE &Die, - dwarf::Attribute Attribute, - const MachineLocation &Location); - - /// Add a new type attribute to the specified entity. - /// - /// This takes and attribute parameter because DW_AT_friend attributes are - /// also type references. - void addType(DIE &Entity, const DIType *Ty, - dwarf::Attribute Attribute = dwarf::DW_AT_type); - - DIE *getOrCreateNameSpace(const DINamespace *NS); - DIE *getOrCreateModule(const DIModule *M); - DIE *getOrCreateSubprogramDIE(const DISubprogram *SP, bool Minimal = false); - - void applySubprogramAttributes(const DISubprogram *SP, DIE &SPDie, - bool SkipSPAttributes = false); - - /// Find existing DIE or create new DIE for the given type. - DIE *getOrCreateTypeDIE(const MDNode *TyNode); - - /// Get context owner's DIE. - DIE *getOrCreateContextDIE(const DIScope *Context); - - /// Construct DIEs for types that contain vtables. - void constructContainingTypeDIEs(); - - /// Construct function argument DIEs. - void constructSubprogramArguments(DIE &Buffer, DITypeRefArray Args); - - /// Create a DIE with the given Tag, add the DIE to its parent, and - /// call insertDIE if MD is not null. - DIE &createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N = nullptr); - - bool useSegmentedStringOffsetsTable() const { - return DD->useSegmentedStringOffsetsTable(); - } - - /// Compute the size of a header for this unit, not including the initial - /// length field. - virtual unsigned getHeaderSize() const { - return sizeof(int16_t) + // DWARF version number - sizeof(int32_t) + // Offset Into Abbrev. Section - sizeof(int8_t) + // Pointer Size (in bytes) - (DD->getDwarfVersion() >= 5 ? sizeof(int8_t) - : 0); // DWARF v5 unit type - } - - /// Emit the header for this unit, not including the initial length field. - virtual void emitHeader(bool UseOffsets) = 0; - - /// Add the DW_AT_str_offsets_base attribute to the unit DIE. - void addStringOffsetsStart(); - - /// Add the DW_AT_rnglists_base attribute to the unit DIE. - void addRnglistsBase(); - - /// Add the DW_AT_loclists_base attribute to the unit DIE. - void addLoclistsBase(); - - virtual DwarfCompileUnit &getCU() = 0; - - void constructTypeDIE(DIE &Buffer, const DICompositeType *CTy); - - /// addSectionDelta - Add a label delta attribute data and value. - DIE::value_iterator addSectionDelta(DIE &Die, dwarf::Attribute Attribute, - const MCSymbol *Hi, const MCSymbol *Lo); - - /// Add a Dwarf section label attribute data and value. - DIE::value_iterator addSectionLabel(DIE &Die, dwarf::Attribute Attribute, - const MCSymbol *Label, - const MCSymbol *Sec); - - /// If the \p File has an MD5 checksum, return it as an MD5Result - /// allocated in the MCContext. - MD5::MD5Result *getMD5AsBytes(const DIFile *File) const; - -protected: - ~DwarfUnit(); - - /// Create new static data member DIE. - DIE *getOrCreateStaticMemberDIE(const DIDerivedType *DT); - - /// Look up the source ID for the given file. If none currently exists, - /// create a new ID and insert it in the line table. - virtual unsigned getOrCreateSourceID(const DIFile *File) = 0; - - /// Look in the DwarfDebug map for the MDNode that corresponds to the - /// reference. - template <typename T> T *resolve(TypedDINodeRef<T> Ref) const { - return Ref.resolve(); - } - - /// If this is a named finished type then include it in the list of types for - /// the accelerator tables. - void updateAcceleratorTables(const DIScope *Context, const DIType *Ty, - const DIE &TyDIE); - - /// Emit the common part of the header for this unit. - void emitCommonHeader(bool UseOffsets, dwarf::UnitType UT); - -private: - void constructTypeDIE(DIE &Buffer, const DIBasicType *BTy); - void constructTypeDIE(DIE &Buffer, const DIDerivedType *DTy); - void constructTypeDIE(DIE &Buffer, const DISubroutineType *CTy); - void constructSubrangeDIE(DIE &Buffer, const DISubrange *SR, DIE *IndexTy); - void constructArrayTypeDIE(DIE &Buffer, const DICompositeType *CTy); - void constructEnumTypeDIE(DIE &Buffer, const DICompositeType *CTy); - DIE &constructMemberDIE(DIE &Buffer, const DIDerivedType *DT); - void constructTemplateTypeParameterDIE(DIE &Buffer, - const DITemplateTypeParameter *TP); - void constructTemplateValueParameterDIE(DIE &Buffer, - const DITemplateValueParameter *TVP); - - /// Return the default lower bound for an array. - /// - /// If the DWARF version doesn't handle the language, return -1. - int64_t getDefaultLowerBound() const; - - /// Get an anonymous type for index type. - DIE *getIndexTyDie(); - - /// Set D as anonymous type for index which can be reused later. - void setIndexTyDie(DIE *D) { IndexTyDie = D; } - - virtual bool isDwoUnit() const = 0; - const MCSymbol *getCrossSectionRelativeBaseAddress() const override; -}; - -class DwarfTypeUnit final : public DwarfUnit { - uint64_t TypeSignature; - const DIE *Ty; - DwarfCompileUnit &CU; - MCDwarfDwoLineTable *SplitLineTable; - bool UsedLineTable = false; - - unsigned getOrCreateSourceID(const DIFile *File) override; - bool isDwoUnit() const override; - -public: - DwarfTypeUnit(DwarfCompileUnit &CU, AsmPrinter *A, DwarfDebug *DW, - DwarfFile *DWU, MCDwarfDwoLineTable *SplitLineTable = nullptr); - - void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; } - void setType(const DIE *Ty) { this->Ty = Ty; } - - /// Get context owner's DIE. - DIE *createTypeDIE(const DICompositeType *Ty); - - /// Emit the header for this unit, not including the initial length field. - void emitHeader(bool UseOffsets) override; - unsigned getHeaderSize() const override { - return DwarfUnit::getHeaderSize() + sizeof(uint64_t) + // Type Signature - sizeof(uint32_t); // Type DIE Offset - } - void addGlobalName(StringRef Name, const DIE &Die, - const DIScope *Context) override; - void addGlobalType(const DIType *Ty, const DIE &Die, - const DIScope *Context) override; - DwarfCompileUnit &getCU() override { return CU; } -}; -} // end llvm namespace -#endif |