#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/SmallVector.h"
-#include "llvm/Support/Compiler.h"
#include "llvm/Support/Dwarf.h"
-#include "llvm/MC/MCExpr.h"
#include <vector>
namespace llvm {
- class AsmPrinter;
- class MCSymbol;
- class MCSymbolRefExpr;
- class raw_ostream;
-
- //===--------------------------------------------------------------------===//
- /// DIEAbbrevData - Dwarf abbreviation data, describes one attribute of a
- /// Dwarf abbreviation.
- class DIEAbbrevData {
- /// Attribute - Dwarf attribute code.
- ///
- uint16_t Attribute;
-
- /// Form - Dwarf form code.
- ///
- uint16_t Form;
- public:
- DIEAbbrevData(uint16_t A, uint16_t F) : Attribute(A), Form(F) {}
-
- // Accessors.
- uint16_t getAttribute() const { return Attribute; }
- uint16_t getForm() const { return Form; }
-
- /// Profile - Used to gather unique data for the abbreviation folding set.
- ///
- void Profile(FoldingSetNodeID &ID) const;
- };
+class AsmPrinter;
+class MCExpr;
+class MCSymbol;
+class raw_ostream;
+class DwarfTypeUnit;
+
+//===--------------------------------------------------------------------===//
+/// DIEAbbrevData - Dwarf abbreviation data, describes one attribute of a
+/// Dwarf abbreviation.
+class DIEAbbrevData {
+ /// Attribute - Dwarf attribute code.
+ ///
+ dwarf::Attribute Attribute;
- //===--------------------------------------------------------------------===//
- /// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug
- /// information object.
- class DIEAbbrev : public FoldingSetNode {
- /// Tag - Dwarf tag code.
- ///
- uint16_t Tag;
-
- /// ChildrenFlag - Dwarf children flag.
- ///
- uint16_t ChildrenFlag;
-
- /// Unique number for node.
- ///
- unsigned Number;
-
- /// Data - Raw data bytes for abbreviation.
- ///
- SmallVector<DIEAbbrevData, 12> Data;
-
- public:
- DIEAbbrev(uint16_t T, uint16_t C) : Tag(T), ChildrenFlag(C), Data() {}
-
- // Accessors.
- uint16_t getTag() const { return Tag; }
- unsigned getNumber() const { return Number; }
- uint16_t getChildrenFlag() const { return ChildrenFlag; }
- const SmallVectorImpl<DIEAbbrevData> &getData() const { return Data; }
- void setTag(uint16_t T) { Tag = T; }
- void setChildrenFlag(uint16_t CF) { ChildrenFlag = CF; }
- void setNumber(unsigned N) { Number = N; }
-
- /// AddAttribute - Adds another set of attribute information to the
- /// abbreviation.
- void AddAttribute(uint16_t Attribute, uint16_t Form) {
- Data.push_back(DIEAbbrevData(Attribute, Form));
- }
+ /// Form - Dwarf form code.
+ ///
+ dwarf::Form Form;
+
+public:
+ DIEAbbrevData(dwarf::Attribute A, dwarf::Form F) : Attribute(A), Form(F) {}
+
+ // Accessors.
+ dwarf::Attribute getAttribute() const { return Attribute; }
+ dwarf::Form getForm() const { return Form; }
+
+ /// Profile - Used to gather unique data for the abbreviation folding set.
+ ///
+ void Profile(FoldingSetNodeID &ID) const;
+};
+
+//===--------------------------------------------------------------------===//
+/// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug
+/// information object.
+class DIEAbbrev : public FoldingSetNode {
+ /// Unique number for node.
+ ///
+ unsigned Number;
+
+ /// Tag - Dwarf tag code.
+ ///
+ dwarf::Tag Tag;
- /// Profile - Used to gather unique data for the abbreviation folding set.
- ///
- void Profile(FoldingSetNodeID &ID) const;
+ /// Children - Whether or not this node has children.
+ ///
+ // This cheats a bit in all of the uses since the values in the standard
+ // are 0 and 1 for no children and children respectively.
+ bool Children;
+
+ /// Data - Raw data bytes for abbreviation.
+ ///
+ SmallVector<DIEAbbrevData, 12> Data;
+
+public:
+ DIEAbbrev(dwarf::Tag T, bool C) : Tag(T), Children(C), Data() {}
+
+ // Accessors.
+ dwarf::Tag getTag() const { return Tag; }
+ unsigned getNumber() const { return Number; }
+ bool hasChildren() const { return Children; }
+ const SmallVectorImpl<DIEAbbrevData> &getData() const { return Data; }
+ void setChildrenFlag(bool hasChild) { Children = hasChild; }
+ void setNumber(unsigned N) { Number = N; }
+
+ /// AddAttribute - Adds another set of attribute information to the
+ /// abbreviation.
+ void AddAttribute(dwarf::Attribute Attribute, dwarf::Form Form) {
+ Data.push_back(DIEAbbrevData(Attribute, Form));
+ }
+
+ /// Profile - Used to gather unique data for the abbreviation folding set.
+ ///
+ void Profile(FoldingSetNodeID &ID) const;
- /// Emit - Print the abbreviation using the specified asm printer.
- ///
- void Emit(AsmPrinter *AP) const;
+ /// Emit - Print the abbreviation using the specified asm printer.
+ ///
+ void Emit(AsmPrinter *AP) const;
#ifndef NDEBUG
- void print(raw_ostream &O);
- void dump();
+ void print(raw_ostream &O);
+ void dump();
#endif
- };
+};
+
+//===--------------------------------------------------------------------===//
+/// DIE - A structured debug information entry. Has an abbreviation which
+/// describes its organization.
+class DIEValue;
- //===--------------------------------------------------------------------===//
- /// DIE - A structured debug information entry. Has an abbreviation which
- /// describes its organization.
- class DIEValue;
+class DIE {
+protected:
+ /// Offset - Offset in debug info section.
+ ///
+ unsigned Offset;
+
+ /// Size - Size of instance + children.
+ ///
+ unsigned Size;
- class DIE {
- protected:
- /// Offset - Offset in debug info section.
- ///
- unsigned Offset;
+ /// Abbrev - Buffer for constructing abbreviation.
+ ///
+ DIEAbbrev Abbrev;
- /// Size - Size of instance + children.
- ///
- unsigned Size;
+ /// Children DIEs.
+ ///
+ std::vector<std::unique_ptr<DIE>> Children;
- /// Abbrev - Buffer for constructing abbreviation.
- ///
- DIEAbbrev Abbrev;
+ DIE *Parent;
- /// Children DIEs.
- ///
- std::vector<DIE *> Children;
+ /// Attribute values.
+ ///
+ SmallVector<DIEValue *, 12> Values;
+
+protected:
+ DIE()
+ : Offset(0), Size(0), Abbrev((dwarf::Tag)0, dwarf::DW_CHILDREN_no),
+ Parent(nullptr) {}
+
+public:
+ explicit DIE(dwarf::Tag Tag)
+ : Offset(0), Size(0), Abbrev((dwarf::Tag)Tag, dwarf::DW_CHILDREN_no),
+ Parent(nullptr) {}
+
+ // Accessors.
+ DIEAbbrev &getAbbrev() { return Abbrev; }
+ const DIEAbbrev &getAbbrev() const { return Abbrev; }
+ unsigned getAbbrevNumber() const { return Abbrev.getNumber(); }
+ dwarf::Tag getTag() const { return Abbrev.getTag(); }
+ unsigned getOffset() const { return Offset; }
+ unsigned getSize() const { return Size; }
+ const std::vector<std::unique_ptr<DIE>> &getChildren() const {
+ return Children;
+ }
+ const SmallVectorImpl<DIEValue *> &getValues() const { return Values; }
+ DIE *getParent() const { return Parent; }
+ /// Climb up the parent chain to get the compile or type unit DIE this DIE
+ /// belongs to.
+ const DIE *getUnit() const;
+ /// Similar to getUnit, returns null when DIE is not added to an
+ /// owner yet.
+ const DIE *getUnitOrNull() const;
+ void setOffset(unsigned O) { Offset = O; }
+ void setSize(unsigned S) { Size = S; }
+
+ /// addValue - Add a value and attributes to a DIE.
+ ///
+ void addValue(dwarf::Attribute Attribute, dwarf::Form Form, DIEValue *Value) {
+ Abbrev.AddAttribute(Attribute, Form);
+ Values.push_back(Value);
+ }
- DIE *Parent;
+ /// addChild - Add a child to the DIE.
+ ///
+ void addChild(DIE *Child) {
+ assert(!Child->getParent());
+ Abbrev.setChildrenFlag(dwarf::DW_CHILDREN_yes);
+ Children.push_back(std::unique_ptr<DIE>(Child));
+ Child->Parent = this;
+ }
- /// Attribute values.
- ///
- SmallVector<DIEValue*, 12> Values;
+ /// findAttribute - Find a value in the DIE with the attribute given,
+ /// returns NULL if no such attribute exists.
+ DIEValue *findAttribute(dwarf::Attribute Attribute) const;
#ifndef NDEBUG
- // Private data for print()
- mutable unsigned IndentCount;
+ void print(raw_ostream &O, unsigned IndentCount = 0) const;
+ void dump();
#endif
- public:
- explicit DIE(unsigned Tag)
- : Offset(0), Size(0), Abbrev(Tag, dwarf::DW_CHILDREN_no), Parent(0) {}
- virtual ~DIE();
-
- // Accessors.
- DIEAbbrev &getAbbrev() { return Abbrev; }
- unsigned getAbbrevNumber() const { return Abbrev.getNumber(); }
- unsigned getTag() const { return Abbrev.getTag(); }
- unsigned getOffset() const { return Offset; }
- unsigned getSize() const { return Size; }
- const std::vector<DIE *> &getChildren() const { return Children; }
- const SmallVectorImpl<DIEValue*> &getValues() const { return Values; }
- DIE *getParent() const { return Parent; }
- /// Climb up the parent chain to get the compile unit DIE this DIE belongs
- /// to.
- DIE *getCompileUnit();
- void setTag(unsigned Tag) { Abbrev.setTag(Tag); }
- void setOffset(unsigned O) { Offset = O; }
- void setSize(unsigned S) { Size = S; }
-
- /// addValue - Add a value and attributes to a DIE.
- ///
- void addValue(unsigned Attribute, unsigned Form, DIEValue *Value) {
- Abbrev.AddAttribute(Attribute, Form);
- Values.push_back(Value);
- }
+};
+
+//===--------------------------------------------------------------------===//
+/// DIEValue - A debug information entry value. Some of these roughly correlate
+/// to DWARF attribute classes.
+///
+class DIEValue {
+ virtual void anchor();
+
+public:
+ enum Type {
+ isInteger,
+ isString,
+ isExpr,
+ isLabel,
+ isDelta,
+ isEntry,
+ isTypeSignature,
+ isBlock,
+ isLoc,
+ isLocList,
+ };
- /// addChild - Add a child to the DIE.
- ///
- void addChild(DIE *Child) {
- if (Child->getParent()) {
- assert (Child->getParent() == this && "Unexpected DIE Parent!");
- return;
- }
- Abbrev.setChildrenFlag(dwarf::DW_CHILDREN_yes);
- Children.push_back(Child);
- Child->Parent = this;
+protected:
+ /// Ty - Type of data stored in the value.
+ ///
+ Type Ty;
+
+ explicit DIEValue(Type T) : Ty(T) {}
+ virtual ~DIEValue() {}
+
+public:
+ // Accessors
+ Type getType() const { return Ty; }
+
+ /// EmitValue - Emit value via the Dwarf writer.
+ ///
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const = 0;
+
+ /// SizeOf - Return the size of a value in bytes.
+ ///
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const = 0;
+
+#ifndef NDEBUG
+ virtual void print(raw_ostream &O) const = 0;
+ void dump() const;
+#endif
+};
+
+//===--------------------------------------------------------------------===//
+/// DIEInteger - An integer value DIE.
+///
+class DIEInteger : public DIEValue {
+ uint64_t Integer;
+
+public:
+ explicit DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {}
+
+ /// BestForm - Choose the best form for integer.
+ ///
+ static dwarf::Form BestForm(bool IsSigned, uint64_t Int) {
+ if (IsSigned) {
+ const int64_t SignedInt = Int;
+ if ((char)Int == SignedInt)
+ return dwarf::DW_FORM_data1;
+ if ((short)Int == SignedInt)
+ return dwarf::DW_FORM_data2;
+ if ((int)Int == SignedInt)
+ return dwarf::DW_FORM_data4;
+ } else {
+ if ((unsigned char)Int == Int)
+ return dwarf::DW_FORM_data1;
+ if ((unsigned short)Int == Int)
+ return dwarf::DW_FORM_data2;
+ if ((unsigned int)Int == Int)
+ return dwarf::DW_FORM_data4;
}
+ return dwarf::DW_FORM_data8;
+ }
+
+ /// EmitValue - Emit integer of appropriate size.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
+
+ uint64_t getValue() const { return Integer; }
+
+ /// SizeOf - Determine size of integer value in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *I) { return I->getType() == isInteger; }
#ifndef NDEBUG
- void print(raw_ostream &O, unsigned IndentCount = 0) const;
- void dump();
+ void print(raw_ostream &O) const override;
#endif
- };
+};
- //===--------------------------------------------------------------------===//
- /// DIEValue - A debug information entry value.
- ///
- class DIEValue {
- virtual void anchor();
- public:
- enum {
- isInteger,
- isString,
- isExpr,
- isLabel,
- isDelta,
- isEntry,
- isBlock
- };
- protected:
- /// Type - Type of data stored in the value.
- ///
- unsigned Type;
- public:
- explicit DIEValue(unsigned T) : Type(T) {}
- virtual ~DIEValue() {}
-
- // Accessors
- unsigned getType() const { return Type; }
-
- /// EmitValue - Emit value via the Dwarf writer.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const = 0;
-
- /// SizeOf - Return the size of a value in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const = 0;
+//===--------------------------------------------------------------------===//
+/// DIEExpr - An expression DIE.
+//
+class DIEExpr : public DIEValue {
+ const MCExpr *Expr;
+
+public:
+ explicit DIEExpr(const MCExpr *E) : DIEValue(isExpr), Expr(E) {}
+
+ /// EmitValue - Emit expression value.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
+
+ /// getValue - Get MCExpr.
+ ///
+ const MCExpr *getValue() const { return Expr; }
+
+ /// SizeOf - Determine size of expression value in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isExpr; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const = 0;
- void dump() const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
- //===--------------------------------------------------------------------===//
- /// DIEInteger - An integer value DIE.
- ///
- class DIEInteger : public DIEValue {
- uint64_t Integer;
- public:
- explicit DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {}
-
- /// BestForm - Choose the best form for integer.
- ///
- static unsigned BestForm(bool IsSigned, uint64_t Int) {
- if (IsSigned) {
- const int64_t SignedInt = Int;
- if ((char)Int == SignedInt) return dwarf::DW_FORM_data1;
- if ((short)Int == SignedInt) return dwarf::DW_FORM_data2;
- if ((int)Int == SignedInt) return dwarf::DW_FORM_data4;
- } else {
- if ((unsigned char)Int == Int) return dwarf::DW_FORM_data1;
- if ((unsigned short)Int == Int) return dwarf::DW_FORM_data2;
- if ((unsigned int)Int == Int) return dwarf::DW_FORM_data4;
- }
- return dwarf::DW_FORM_data8;
- }
+//===--------------------------------------------------------------------===//
+/// DIELabel - A label DIE.
+//
+class DIELabel : public DIEValue {
+ const MCSymbol *Label;
+
+public:
+ explicit DIELabel(const MCSymbol *L) : DIEValue(isLabel), Label(L) {}
- /// EmitValue - Emit integer of appropriate size.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ /// EmitValue - Emit label value.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
- uint64_t getValue() const { return Integer; }
+ /// getValue - Get MCSymbol.
+ ///
+ const MCSymbol *getValue() const { return Label; }
- /// SizeOf - Determine size of integer value in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ /// SizeOf - Determine size of label value in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
- // Implement isa/cast/dyncast.
- static bool classof(const DIEValue *I) { return I->getType() == isInteger; }
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *L) { return L->getType() == isLabel; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
- //===--------------------------------------------------------------------===//
- /// DIEExpr - An expression DIE.
- //
- class DIEExpr : public DIEValue {
- const MCExpr *Expr;
- public:
- explicit DIEExpr(const MCExpr *E) : DIEValue(isExpr), Expr(E) {}
+//===--------------------------------------------------------------------===//
+/// DIEDelta - A simple label difference DIE.
+///
+class DIEDelta : public DIEValue {
+ const MCSymbol *LabelHi;
+ const MCSymbol *LabelLo;
- /// EmitValue - Emit expression value.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+public:
+ DIEDelta(const MCSymbol *Hi, const MCSymbol *Lo)
+ : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {}
- /// getValue - Get MCExpr.
- ///
- const MCExpr *getValue() const { return Expr; }
+ /// EmitValue - Emit delta value.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
- /// SizeOf - Determine size of expression value in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ /// SizeOf - Determine size of delta value in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
- // Implement isa/cast/dyncast.
- static bool classof(const DIEValue *E) { return E->getType() == isExpr; }
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *D) { return D->getType() == isDelta; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
+
+//===--------------------------------------------------------------------===//
+/// DIEString - A container for string values.
+///
+class DIEString : public DIEValue {
+ const DIEValue *Access;
+ const StringRef Str;
- //===--------------------------------------------------------------------===//
- /// DIELabel - A label DIE.
- //
- class DIELabel : public DIEValue {
- const MCSymbol *Label;
- public:
- explicit DIELabel(const MCSymbol *L) : DIEValue(isLabel), Label(L) {}
+public:
+ DIEString(const DIEValue *Acc, const StringRef S)
+ : DIEValue(isString), Access(Acc), Str(S) {}
- /// EmitValue - Emit label value.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ /// getString - Grab the string out of the object.
+ StringRef getString() const { return Str; }
- /// getValue - Get MCSymbol.
- ///
- const MCSymbol *getValue() const { return Label; }
+ /// EmitValue - Emit delta value.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
- /// SizeOf - Determine size of label value in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ /// SizeOf - Determine size of delta value in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
- // Implement isa/cast/dyncast.
- static bool classof(const DIEValue *L) { return L->getType() == isLabel; }
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *D) { return D->getType() == isString; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
+
+//===--------------------------------------------------------------------===//
+/// DIEEntry - A pointer to another debug information entry. An instance of
+/// this class can also be used as a proxy for a debug information entry not
+/// yet defined (ie. types.)
+class DIEEntry : public DIEValue {
+ DIE *const Entry;
+
+public:
+ explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {
+ assert(E && "Cannot construct a DIEEntry with a null DIE");
+ }
- //===--------------------------------------------------------------------===//
- /// DIEDelta - A simple label difference DIE.
+ DIE *getEntry() const { return Entry; }
+
+ /// EmitValue - Emit debug information entry offset.
///
- class DIEDelta : public DIEValue {
- const MCSymbol *LabelHi;
- const MCSymbol *LabelLo;
- public:
- DIEDelta(const MCSymbol *Hi, const MCSymbol *Lo)
- : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {}
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
- /// EmitValue - Emit delta value.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ /// SizeOf - Determine size of debug information entry in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override {
+ return Form == dwarf::DW_FORM_ref_addr ? getRefAddrSize(AP)
+ : sizeof(int32_t);
+ }
- /// SizeOf - Determine size of delta value in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ /// Returns size of a ref_addr entry.
+ static unsigned getRefAddrSize(AsmPrinter *AP);
- // Implement isa/cast/dyncast.
- static bool classof(const DIEValue *D) { return D->getType() == isDelta; }
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isEntry; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
+
+//===--------------------------------------------------------------------===//
+/// \brief A signature reference to a type unit.
+class DIETypeSignature : public DIEValue {
+ const DwarfTypeUnit &Unit;
+
+public:
+ explicit DIETypeSignature(const DwarfTypeUnit &Unit)
+ : DIEValue(isTypeSignature), Unit(Unit) {}
+
+ /// \brief Emit type unit signature.
+ void EmitValue(AsmPrinter *Asm, dwarf::Form Form) const override;
+
+ /// Returns size of a ref_sig8 entry.
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override {
+ assert(Form == dwarf::DW_FORM_ref_sig8);
+ return 8;
+ }
+
+ // \brief Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) {
+ return E->getType() == isTypeSignature;
+ }
+#ifndef NDEBUG
+ void print(raw_ostream &O) const override;
+ void dump() const;
+#endif
+};
- //===--------------------------------------------------------------------===//
- /// DIEEntry - A pointer to another debug information entry. An instance of
- /// this class can also be used as a proxy for a debug information entry not
- /// yet defined (ie. types.)
- class DIEEntry : public DIEValue {
- DIE *const Entry;
- public:
- explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {
- assert(E && "Cannot construct a DIEEntry with a null DIE");
- }
+//===--------------------------------------------------------------------===//
+/// DIELoc - Represents an expression location.
+//
+class DIELoc : public DIEValue, public DIE {
+ mutable unsigned Size; // Size in bytes excluding size header.
+public:
+ DIELoc() : DIEValue(isLoc), Size(0) {}
- DIE *getEntry() const { return Entry; }
+ /// ComputeSize - Calculate the size of the location expression.
+ ///
+ unsigned ComputeSize(AsmPrinter *AP) const;
- /// EmitValue - Emit debug information entry offset.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ /// BestForm - Choose the best form for data.
+ ///
+ dwarf::Form BestForm(unsigned DwarfVersion) const {
+ if (DwarfVersion > 3)
+ return dwarf::DW_FORM_exprloc;
+ // Pre-DWARF4 location expressions were blocks and not exprloc.
+ if ((unsigned char)Size == Size)
+ return dwarf::DW_FORM_block1;
+ if ((unsigned short)Size == Size)
+ return dwarf::DW_FORM_block2;
+ if ((unsigned int)Size == Size)
+ return dwarf::DW_FORM_block4;
+ return dwarf::DW_FORM_block;
+ }
+
+ /// EmitValue - Emit location data.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
- /// SizeOf - Determine size of debug information entry in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const {
- return Form == dwarf::DW_FORM_ref_addr ? getRefAddrSize(AP) :
- sizeof(int32_t);
- }
+ /// SizeOf - Determine size of location data in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
- /// Returns size of a ref_addr entry.
- static unsigned getRefAddrSize(AsmPrinter *AP);
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isLoc; }
- // Implement isa/cast/dyncast.
- static bool classof(const DIEValue *E) { return E->getType() == isEntry; }
+#ifndef NDEBUG
+ void print(raw_ostream &O) const override;
+#endif
+};
+
+//===--------------------------------------------------------------------===//
+/// DIEBlock - Represents a block of values.
+//
+class DIEBlock : public DIEValue, public DIE {
+ mutable unsigned Size; // Size in bytes excluding size header.
+public:
+ DIEBlock() : DIEValue(isBlock), Size(0) {}
+
+ /// ComputeSize - Calculate the size of the location expression.
+ ///
+ unsigned ComputeSize(AsmPrinter *AP) const;
+
+ /// BestForm - Choose the best form for data.
+ ///
+ dwarf::Form BestForm() const {
+ if ((unsigned char)Size == Size)
+ return dwarf::DW_FORM_block1;
+ if ((unsigned short)Size == Size)
+ return dwarf::DW_FORM_block2;
+ if ((unsigned int)Size == Size)
+ return dwarf::DW_FORM_block4;
+ return dwarf::DW_FORM_block;
+ }
+
+ /// EmitValue - Emit location data.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
+
+ /// SizeOf - Determine size of location data in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isBlock; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
- //===--------------------------------------------------------------------===//
- /// DIEBlock - A block of values. Primarily used for location expressions.
- //
- class DIEBlock : public DIEValue, public DIE {
- unsigned Size; // Size in bytes excluding size header.
- public:
- DIEBlock()
- : DIEValue(isBlock), DIE(0), Size(0) {}
- virtual ~DIEBlock() {}
-
- /// ComputeSize - calculate the size of the block.
- ///
- unsigned ComputeSize(AsmPrinter *AP);
-
- /// BestForm - Choose the best form for data.
- ///
- unsigned BestForm() const {
- if ((unsigned char)Size == Size) return dwarf::DW_FORM_block1;
- if ((unsigned short)Size == Size) return dwarf::DW_FORM_block2;
- if ((unsigned int)Size == Size) return dwarf::DW_FORM_block4;
- return dwarf::DW_FORM_block;
- }
+//===--------------------------------------------------------------------===//
+/// DIELocList - Represents a pointer to a location list in the debug_loc
+/// section.
+//
+class DIELocList : public DIEValue {
+ // Index into the .debug_loc vector.
+ size_t Index;
+
+public:
+ DIELocList(size_t I) : DIEValue(isLocList), Index(I) {}
+
+ /// getValue - Grab the current index out.
+ size_t getValue() const { return Index; }
- /// EmitValue - Emit block data.
- ///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ /// EmitValue - Emit location data.
+ ///
+ void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override;
- /// SizeOf - Determine size of block data in bytes.
- ///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ /// SizeOf - Determine size of location data in bytes.
+ ///
+ unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const override;
- // Implement isa/cast/dyncast.
- static bool classof(const DIEValue *E) { return E->getType() == isBlock; }
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isLocList; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O) const;
+ void print(raw_ostream &O) const override;
#endif
- };
+};
} // end llvm namespace
projects / oota-llvm.git / blobdiff