DbgVariable *AbsVar; // Corresponding Abstract variable, if any.
const MachineInstr *MInsn; // DBG_VALUE instruction of the variable.
int FrameIndex;
+ DwarfDebug *DD;
public:
// AbsVar may be NULL.
- DbgVariable(DIVariable V, DbgVariable *AV)
+ DbgVariable(DIVariable V, DbgVariable *AV, DwarfDebug *DD)
: Var(V), TheDIE(0), DotDebugLocOffset(~0U), AbsVar(AV), MInsn(0),
- FrameIndex(~0) {}
+ FrameIndex(~0), DD(DD) {}
// Accessors.
DIVariable getVariable() const { return Var; }
int getFrameIndex() const { return FrameIndex; }
void setFrameIndex(int FI) { FrameIndex = FI; }
// Translate tag to proper Dwarf tag.
- unsigned getTag() const {
+ uint16_t getTag() const {
if (Var.getTag() == dwarf::DW_TAG_arg_variable)
return dwarf::DW_TAG_formal_parameter;
}
bool variableHasComplexAddress() const {
- assert(Var.Verify() && "Invalid complex DbgVariable!");
+ assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.hasComplexAddress();
}
bool isBlockByrefVariable() const {
- assert(Var.Verify() && "Invalid complex DbgVariable!");
+ assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.isBlockByrefVariable();
}
unsigned getNumAddrElements() const {
- assert(Var.Verify() && "Invalid complex DbgVariable!");
+ assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.getNumAddrElements();
}
uint64_t getAddrElement(unsigned i) const {
return Var.getAddrElement(i);
}
DIType getType() const;
+
+private:
+ /// resolve - Look in the DwarfDebug map for the MDNode that
+ /// corresponds to the reference.
+ template <typename T> T resolve(DIRef<T> Ref) const;
};
/// \brief Collects and handles information specific to a particular
/// \brief Returns the address pool.
AddrPool *getAddrPool() { return &AddressPool; }
+};
- /// \brief for a given compile unit DIE, returns offset from beginning of
- /// debug info.
- unsigned getCUOffset(DIE *Die);
+/// \brief Helper used to pair up a symbol and it's DWARF compile unit.
+struct SymbolCU {
+ SymbolCU(CompileUnit *CU, const MCSymbol *Sym) : Sym(Sym), CU(CU) {}
+ const MCSymbol *Sym;
+ CompileUnit *CU;
};
/// \brief Collects and handles dwarf debug information.
// All DIEValues are allocated through this allocator.
BumpPtrAllocator DIEValueAllocator;
- //===--------------------------------------------------------------------===//
- // Attribute used to construct specific Dwarf sections.
- //
-
+ // Handle to the a compile unit used for the inline extension handling.
CompileUnit *FirstCU;
// Maps MDNode with its corresponding CompileUnit.
// separated by a zero byte, mapped to a unique id.
StringMap<unsigned, BumpPtrAllocator&> SourceIdMap;
+ // List of all labels used in aranges generation.
+ std::vector<SymbolCU> ArangeLabels;
+
+ // Size of each symbol emitted (for those symbols that have a specific size).
+ DenseMap <const MCSymbol *, uint64_t> SymSize;
+
// Provides a unique id per text section.
- SetVector<const MCSection*> SectionMap;
+ typedef DenseMap<const MCSection *, SmallVector<SymbolCU, 8> > SectionMapType;
+ SectionMapType SectionMap;
- // List of Arguments (DbgValues) for current function.
+ // List of arguments for current function.
SmallVector<DbgVariable *, 8> CurrentFnArguments;
LexicalScopes LScopes;
// as DW_AT_inline.
SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
- // Keep track of inlined functions and their location. This
- // information is used to populate the debug_inlined section.
- typedef std::pair<const MCSymbol *, DIE *> InlineInfoLabels;
- typedef DenseMap<const MDNode *,
- SmallVector<InlineInfoLabels, 4> > InlineInfoMap;
- InlineInfoMap InlineInfo;
- SmallVector<const MDNode *, 4> InlinedSPNodes;
-
// This is a collection of subprogram MDNodes that are processed to
// create DIEs.
SmallPtrSet<const MDNode *, 16> ProcessedSPNodes;
MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
MCSymbol *FunctionBeginSym, *FunctionEndSym;
MCSymbol *DwarfAbbrevDWOSectionSym, *DwarfStrDWOSectionSym;
+ MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
// As an optimization, there is no need to emit an entry in the directory
// table for the same directory as DW_AT_comp_dir.
// Holders for the various debug information flags that we might need to
// have exposed. See accessor functions below for description.
- // Whether or not we're emitting info for older versions of gdb on darwin.
- bool IsDarwinGDBCompat;
-
// Holder for imported entities.
typedef SmallVector<std::pair<const MDNode *, const MDNode *>, 32>
ImportedEntityMap;
ImportedEntityMap ScopesWithImportedEntities;
+ // Holder for types that are going to be extracted out into a type unit.
+ std::vector<DIE *> TypeUnits;
+
+ // Whether to emit the pubnames/pubtypes sections.
+ bool HasDwarfPubSections;
+
+ // Version of dwarf we're emitting.
+ unsigned DwarfVersion;
+
// DWARF5 Experimental Options
bool HasDwarfAccelTables;
bool HasSplitDwarf;
- unsigned DwarfVersion;
-
// Separated Dwarf Variables
// In general these will all be for bits that are left in the
// original object file, rather than things that are meant
// Holder for the skeleton information.
DwarfUnits SkeletonHolder;
+ // Maps from a type identifier to the actual MDNode.
+ DITypeIdentifierMap TypeIdentifierMap;
+
private:
void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
/// \brief Construct new DW_TAG_lexical_block for this scope and
/// attach DW_AT_low_pc/DW_AT_high_pc labels.
DIE *constructLexicalScopeDIE(CompileUnit *TheCU, LexicalScope *Scope);
+ /// A helper function to check whether the DIE for a given Scope is going
+ /// to be null.
+ bool isLexicalScopeDIENull(LexicalScope *Scope);
/// \brief This scope represents inlined body of a function. Construct
/// DIE to represent this concrete inlined copy of the function.
/// \brief Construct a DIE for this scope.
DIE *constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope);
+ /// A helper function to create children of a Scope DIE.
+ DIE *createScopeChildrenDIE(CompileUnit *TheCU, LexicalScope *Scope,
+ SmallVectorImpl<DIE*> &Children);
/// \brief Emit initial Dwarf sections with a label at the start of each one.
void emitSectionLabels();
void emitAccelTypes();
/// \brief Emit visible names into a debug pubnames section.
- void emitDebugPubnames();
+ /// \param GnuStyle determines whether or not we want to emit
+ /// additional information into the table ala newer gcc for gdb
+ /// index.
+ void emitDebugPubNames(bool GnuStyle = false);
/// \brief Emit visible types into a debug pubtypes section.
- void emitDebugPubTypes();
+ /// \param GnuStyle determines whether or not we want to emit
+ /// additional information into the table ala newer gcc for gdb
+ /// index.
+ void emitDebugPubTypes(bool GnuStyle = false);
/// \brief Emit visible names into a debug str section.
void emitDebugStr();
/// \brief Construct the split debug info compile unit for the debug info
/// section.
- CompileUnit *constructSkeletonCU(const MDNode *);
+ CompileUnit *constructSkeletonCU(const CompileUnit *CU);
/// \brief Emit the local split abbreviations.
void emitSkeletonAbbrevs(const MCSection *);
// Main entry points.
//
DwarfDebug(AsmPrinter *A, Module *M);
- ~DwarfDebug();
/// \brief Emit all Dwarf sections that should come prior to the
/// content.
/// \brief Process end of an instruction.
void endInstruction(const MachineInstr *MI);
+ /// \brief Add a DIE to the set of types that we're going to pull into
+ /// type units.
+ void addTypeUnitType(DIE *Die) { TypeUnits.push_back(Die); }
+
+ /// \brief Add a label so that arange data can be generated for it.
+ void addArangeLabel(SymbolCU SCU) { ArangeLabels.push_back(SCU); }
+
+ /// \brief For symbols that have a size designated (e.g. common symbols),
+ /// this tracks that size.
+ void setSymbolSize(const MCSymbol *Sym, uint64_t Size) { SymSize[Sym] = Size;}
+
/// \brief Look up the source id with the given directory and source file
/// names. If none currently exists, create a new id and insert it in the
/// SourceIds map.
/// \brief Recursively Emits a debug information entry.
void emitDIE(DIE *Die, std::vector<DIEAbbrev *> *Abbrevs);
- /// \brief Returns whether or not to limit some of our debug
- /// output to the limitations of darwin gdb.
- bool useDarwinGDBCompat() { return IsDarwinGDBCompat; }
-
// Experimental DWARF5 features.
/// \brief Returns whether or not to emit tables that dwarf consumers can
/// Returns the Dwarf Version.
unsigned getDwarfVersion() const { return DwarfVersion; }
+
+ /// Find the MDNode for the given reference.
+ template <typename T> T resolve(DIRef<T> Ref) const {
+ return Ref.resolve(TypeIdentifierMap);
+ }
+
+ /// isSubprogramContext - Return true if Context is either a subprogram
+ /// or another context nested inside a subprogram.
+ bool isSubprogramContext(const MDNode *Context);
+
};
} // End of namespace llvm
projects / oota-llvm.git / blobdiff