#include "llvm/ADT/Optional.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/StringMap.h"
+#include "llvm/DIBuilder.h"
#include "llvm/DebugInfo.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSection.h"
namespace llvm {
class ConstantInt;
class ConstantFP;
class DbgVariable;
+class DwarfCompileUnit;
+
+// Data structure to hold a range for range lists.
+class RangeSpan {
+public:
+ RangeSpan(MCSymbol *S, MCSymbol *E) : Start(S), End(E) {}
+ const MCSymbol *getStart() const { return Start; }
+ const MCSymbol *getEnd() const { return End; }
+
+private:
+ const MCSymbol *Start, *End;
+};
+
+class RangeSpanList {
+private:
+ // Index for locating within the debug_range section this particular span.
+ MCSymbol *RangeSym;
+ // List of ranges.
+ SmallVector<RangeSpan, 2> Ranges;
+
+public:
+ RangeSpanList(MCSymbol *Sym) : RangeSym(Sym) {}
+ MCSymbol *getSym() const { return RangeSym; }
+ const SmallVectorImpl<RangeSpan> &getRanges() const { return Ranges; }
+ void addRange(RangeSpan Range) { Ranges.push_back(Range); }
+};
//===----------------------------------------------------------------------===//
/// Unit - This dwarf writer support class manages information associated
/// with a source file.
-class Unit {
+class DwarfUnit {
protected:
/// UniqueID - a numeric ID unique among all CUs in the module
unsigned UniqueID;
/// Node - MDNode for the compile unit.
- DICompileUnit Node;
+ DICompileUnit CUNode;
- /// CUDie - Compile unit debug information entry.
- const OwningPtr<DIE> CUDie;
+ /// Unit debug information entry.
+ const OwningPtr<DIE> UnitDie;
- /// Offset of the CUDie from beginning of debug info section.
+ /// Offset of the UnitDie from beginning of debug info section.
unsigned DebugInfoOffset;
/// Asm - Target of Dwarf emission.
// Holders for some common dwarf information.
DwarfDebug *DD;
- DwarfUnits *DU;
+ DwarfFile *DU;
- /// IndexTyDie - An anonymous type for index type. Owned by CUDie.
+ /// IndexTyDie - An anonymous type for index type. Owned by UnitDie.
DIE *IndexTyDie;
/// MDNodeToDieMap - Tracks the mapping of unit level debug information
/// DIEBlocks - A list of all the DIEBlocks in use.
std::vector<DIEBlock *> DIEBlocks;
+
+ /// DIELocs - A list of all the DIELocs in use.
+ std::vector<DIELoc *> DIELocs;
/// ContainingTypeMap - 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 MDNode *> ContainingTypeMap;
+ // List of ranges for a given compile unit.
+ SmallVector<RangeSpan, 1> CURanges;
+
+ // List of range lists for a given compile unit, separate from the ranges for
+ // the CU itself.
+ SmallVector<RangeSpanList, 1> CURangeLists;
+
// DIEValueAllocator - All DIEValues are allocated through this allocator.
BumpPtrAllocator DIEValueAllocator;
// DIEIntegerOne - A preallocated DIEValue because 1 is used frequently.
DIEInteger *DIEIntegerOne;
- Unit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A, DwarfDebug *DW,
- DwarfUnits *DWU);
+ /// The section this unit will be emitted in.
+ const MCSection *Section;
+
+ /// A label at the start of the non-dwo section related to this unit.
+ MCSymbol *SectionSym;
+
+ /// The start of the unit within its section.
+ MCSymbol *LabelBegin;
+
+ /// The end of the unit within its section.
+ MCSymbol *LabelEnd;
+
+ /// The label for the start of the range sets for the elements of this unit.
+ MCSymbol *LabelRange;
+
+ /// Skeleton unit associated with this unit.
+ DwarfUnit *Skeleton;
+
+ DwarfUnit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A,
+ DwarfDebug *DW, DwarfFile *DWU);
public:
- virtual ~Unit();
+ virtual ~DwarfUnit();
+
+ /// Set the skeleton unit associated with this unit.
+ void setSkeleton(DwarfUnit *Skel) { Skeleton = Skel; }
+
+ /// Get the skeleton unit associated with this unit.
+ DwarfUnit *getSkeleton() const { return Skeleton; }
+
+ /// Pass in the SectionSym even though we could recreate it in every compile
+ /// unit (type units will have actually distinct symbols once they're in
+ /// comdat sections).
+ void initSection(const MCSection *Section, MCSymbol *SectionSym) {
+ assert(!this->Section);
+ this->Section = Section;
+ this->SectionSym = SectionSym;
+ this->LabelBegin =
+ Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
+ this->LabelEnd =
+ Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
+ this->LabelRange = Asm->GetTempSymbol("gnu_ranges", getUniqueID());
+ }
+
+ const MCSection *getSection() const {
+ assert(Section);
+ return Section;
+ }
+
+ /// If there's a skeleton then return the section symbol for the skeleton
+ /// unit, otherwise return the section symbol for this unit.
+ MCSymbol *getLocalSectionSym() const {
+ if (Skeleton)
+ return Skeleton->getSectionSym();
+ return getSectionSym();
+ }
+
+ MCSymbol *getSectionSym() const {
+ assert(Section);
+ return SectionSym;
+ }
+
+ /// If there's a skeleton then return the begin label for the skeleton unit,
+ /// otherwise return the local label for this unit.
+ MCSymbol *getLocalLabelBegin() const {
+ if (Skeleton)
+ return Skeleton->getLabelBegin();
+ return getLabelBegin();
+ }
+
+ MCSymbol *getLabelBegin() const {
+ assert(Section);
+ return LabelBegin;
+ }
+
+ MCSymbol *getLabelEnd() const {
+ assert(Section);
+ return LabelEnd;
+ }
+
+ MCSymbol *getLabelRange() const {
+ assert(Section);
+ return LabelRange;
+ }
// Accessors.
unsigned getUniqueID() const { return UniqueID; }
- virtual uint16_t getLanguage() const = 0;
- DICompileUnit getNode() const { return Node; }
- DIE *getCUDie() const { return CUDie.get(); }
+ uint16_t getLanguage() const { return CUNode.getLanguage(); }
+ DICompileUnit getCUNode() const { return CUNode; }
+ DIE *getUnitDie() const { return UnitDie.get(); }
const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
/// hasContent - Return true if this compile unit has something to write out.
- bool hasContent() const { return !CUDie->getChildren().empty(); }
+ bool hasContent() const { return !UnitDie->getChildren().empty(); }
+
+ /// addRange - Add an address range to the list of ranges for this unit.
+ void addRange(RangeSpan Range) {
+ // Only add a range for this unit if we're emitting full debug.
+ if (getCUNode().getEmissionKind() == DIBuilder::FullDebug)
+ CURanges.push_back(Range);
+ }
+
+ /// getRanges - Get the list of ranges for this unit.
+ const SmallVectorImpl<RangeSpan> &getRanges() const { return CURanges; }
+ SmallVectorImpl<RangeSpan> &getRanges() { return CURanges; }
+
+ /// addRangeList - Add an address range list to the list of range lists.
+ void addRangeList(RangeSpanList Ranges) { CURangeLists.push_back(Ranges); }
+
+ /// getRangeLists - Get the vector of range lists.
+ const SmallVectorImpl<RangeSpanList> &getRangeLists() const {
+ return CURangeLists;
+ }
+ SmallVectorImpl<RangeSpanList> &getRangeLists() { return CURangeLists; }
/// getParentContextString - Get a string containing the language specific
/// context for a global name.
/// kept in DwarfDebug.
DIE *getDIE(DIDescriptor D) const;
- /// getDIEBlock - Returns a fresh newly allocated DIEBlock.
- DIEBlock *getDIEBlock() { return new (DIEValueAllocator) DIEBlock(); }
+ /// getDIELoc - Returns a fresh newly allocated DIELoc.
+ DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc(); }
/// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
/// when the MDNode can be part of the type system, since DIEs for
/// addDie - Adds or interns the DIE to the compile unit.
///
- void addDie(DIE *Buffer) { CUDie->addChild(Buffer); }
+ void addDie(DIE *Buffer) { UnitDie->addChild(Buffer); }
/// addFlag - Add a flag that is true to the DIE.
void addFlag(DIE *Die, dwarf::Attribute Attribute);
void addUInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
uint64_t Integer);
- void addUInt(DIEBlock *Block, dwarf::Form Form, uint64_t Integer);
+ void addUInt(DIE *Block, dwarf::Form Form, uint64_t Integer);
/// addSInt - Add an signed integer attribute data and value.
void addSInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
int64_t Integer);
- void addSInt(DIEBlock *Die, Optional<dwarf::Form> Form, int64_t Integer);
+ void addSInt(DIELoc *Die, Optional<dwarf::Form> Form, int64_t Integer);
/// addString - Add a string attribute data and value.
void addString(DIE *Die, dwarf::Attribute Attribute, const StringRef Str);
const StringRef Str);
/// addExpr - Add a Dwarf expression attribute data and value.
- void addExpr(DIEBlock *Die, dwarf::Form Form, const MCExpr *Expr);
+ void addExpr(DIELoc *Die, dwarf::Form Form, const MCExpr *Expr);
/// addLabel - Add a Dwarf label attribute data and value.
void addLabel(DIE *Die, dwarf::Attribute Attribute, dwarf::Form Form,
const MCSymbol *Label);
- void addLabel(DIEBlock *Die, dwarf::Form Form, const MCSymbol *Label);
+ void addLabel(DIELoc *Die, dwarf::Form Form, const MCSymbol *Label);
/// addSectionLabel - Add a Dwarf section label attribute data and value.
///
/// addOpAddress - 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(DIEBlock *Die, const MCSymbol *Label);
+ void addOpAddress(DIELoc *Die, const MCSymbol *Label);
/// addSectionDelta - Add a label delta attribute data and value.
void addSectionDelta(DIE *Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
/// addDIEEntry - Add a DIE attribute data and value.
void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIEEntry *Entry);
+ void addDIETypeSignature(DIE *Die, const DwarfTypeUnit &Type);
+
+ /// addBlock - Add block data.
+ void addBlock(DIE *Die, dwarf::Attribute Attribute, DIELoc *Block);
+
/// addBlock - Add block data.
void addBlock(DIE *Die, dwarf::Attribute Attribute, DIEBlock *Block);
/// addSourceLine - Add location information to specified debug information
/// entry.
+ void addSourceLine(DIE *Die, unsigned Line, StringRef File,
+ StringRef Directory);
void addSourceLine(DIE *Die, DIVariable V);
void addSourceLine(DIE *Die, DIGlobalVariable G);
void addSourceLine(DIE *Die, DISubprogram SP);
void addTemplateParams(DIE &Buffer, DIArray TParams);
/// addRegisterOp - Add register operand.
- void addRegisterOp(DIEBlock *TheDie, unsigned Reg);
+ void addRegisterOp(DIELoc *TheDie, unsigned Reg);
/// addRegisterOffset - Add register offset.
- void addRegisterOffset(DIEBlock *TheDie, unsigned Reg, int64_t Offset);
+ void addRegisterOffset(DIELoc *TheDie, unsigned Reg, int64_t Offset);
/// addComplexAddress - Start with the address based on the location provided,
/// and generate the DWARF information necessary to find the actual variable
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
DIE *constructVariableDIE(DbgVariable &DV, bool isScopeAbstract);
+ /// constructSubprogramArguments - Construct function argument DIEs.
+ void constructSubprogramArguments(DIE &Buffer, DIArray 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,
/// Compute the size of a header for this unit, not including the initial
/// length field.
- unsigned getHeaderSize() const {
+ 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)
}
/// Emit the header for this unit, not including the initial length field.
- void emitHeader(const MCSection *ASection, const MCSymbol *ASectionSym);
+ virtual void emitHeader(const MCSection *ASection,
+ const MCSymbol *ASectionSym) const;
+
+ virtual DwarfCompileUnit &getCU() = 0;
protected:
/// getOrCreateStaticMemberDIE - Create new static data member DIE.
void updateAcceleratorTables(DIScope Context, DIType Ty, const DIE *TyDIE);
};
-class CompileUnit : public Unit {
+class DwarfCompileUnit : public DwarfUnit {
+ /// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding
+ /// the need to search for it in applyStmtList.
+ unsigned stmtListIndex;
+
public:
- CompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A,
- DwarfDebug *DW, DwarfUnits *DWU);
+ DwarfCompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A,
+ DwarfDebug *DW, DwarfFile *DWU);
+
+ void initStmtList(MCSymbol *DwarfLineSectionSym);
+
+ /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
+ void applyStmtList(DIE &D);
/// createGlobalVariableDIE - create global variable DIE.
void createGlobalVariableDIE(DIGlobalVariable GV);
/// either DW_FORM_addr or DW_FORM_GNU_addr_index.
void addLabelAddress(DIE *Die, dwarf::Attribute Attribute, MCSymbol *Label);
- uint16_t getLanguage() const { return getNode().getLanguage(); }
+ DwarfCompileUnit &getCU() override { return *this; }
};
-class TypeUnit : public Unit {
+class DwarfTypeUnit : public DwarfUnit {
private:
- uint16_t Language;
+ uint64_t TypeSignature;
+ const DIE *Ty;
+ DwarfCompileUnit &CU;
public:
- TypeUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
- DwarfDebug *DW, DwarfUnits *DWU);
+ DwarfTypeUnit(unsigned UID, DIE *D, DwarfCompileUnit &CU, AsmPrinter *A,
+ DwarfDebug *DW, DwarfFile *DWU);
- uint16_t getLanguage() const { return Language; }
+ void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; }
+ uint64_t getTypeSignature() const { return TypeSignature; }
+ void setType(const DIE *Ty) { this->Ty = Ty; }
+
+ /// Emit the header for this unit, not including the initial length field.
+ void emitHeader(const MCSection *ASection, const MCSymbol *ASectionSym) const
+ override;
+ unsigned getHeaderSize() const override {
+ return DwarfUnit::getHeaderSize() + sizeof(uint64_t) + // Type Signature
+ sizeof(uint32_t); // Type DIE Offset
+ }
+ void initSection(const MCSection *Section);
+ DwarfCompileUnit &getCU() override { return CU; }
};
} // end llvm namespace
#endif
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