#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Dwarf.h"
#include <vector>
namespace llvm {
class AsmPrinter;
class MCSymbol;
+ class MCSymbolRefExpr;
class raw_ostream;
+ class DwarfTypeUnit;
//===--------------------------------------------------------------------===//
- /// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a
+ /// DIEAbbrevData - Dwarf abbreviation data, describes one attribute of a
/// Dwarf abbreviation.
class DIEAbbrevData {
/// Attribute - Dwarf attribute code.
///
- uint16_t Attribute;
+ dwarf::Attribute Attribute;
/// Form - Dwarf form code.
///
- uint16_t Form;
+ dwarf::Form Form;
public:
- DIEAbbrevData(uint16_t A, uint16_t F) : Attribute(A), Form(F) {}
+ DIEAbbrevData(dwarf::Attribute A, dwarf::Form F) : Attribute(A), Form(F) {}
// Accessors.
- uint16_t getAttribute() const { return Attribute; }
- uint16_t getForm() const { return Form; }
+ dwarf::Attribute getAttribute() const { return Attribute; }
+ dwarf::Form getForm() const { return Form; }
/// Profile - Used to gather unique data for the abbreviation folding set.
///
class DIEAbbrev : public FoldingSetNode {
/// Tag - Dwarf tag code.
///
- uint16_t Tag;
+ dwarf::Tag Tag;
/// ChildrenFlag - Dwarf children flag.
///
SmallVector<DIEAbbrevData, 12> Data;
public:
- DIEAbbrev(uint16_t T, uint16_t C) : Tag(T), ChildrenFlag(C), Data() {}
+ DIEAbbrev(dwarf::Tag T, uint16_t C) : Tag(T), ChildrenFlag(C), Data() {}
// Accessors.
- uint16_t getTag() const { return Tag; }
+ dwarf::Tag 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) {
+ void AddAttribute(dwarf::Attribute Attribute, dwarf::Form Form) {
Data.push_back(DIEAbbrevData(Attribute, Form));
}
- /// AddFirstAttribute - Adds a set of attribute information to the front
- /// of the abbreviation.
- void AddFirstAttribute(uint16_t Attribute, uint16_t Form) {
- Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form));
- }
-
/// Profile - Used to gather unique data for the abbreviation folding set.
///
void Profile(FoldingSetNodeID &ID) const;
//===--------------------------------------------------------------------===//
/// DIE - A structured debug information entry. Has an abbreviation which
- /// describes it's organization.
+ /// describes its organization.
class DIEValue;
class DIE {
///
SmallVector<DIEValue*, 12> Values;
- // Private data for print()
- mutable unsigned IndentCount;
public:
explicit DIE(unsigned Tag)
- : Offset(0), Size(0), Abbrev(Tag, dwarf::DW_CHILDREN_no), Parent(0),
- IndentCount(0) {}
- virtual ~DIE();
+ : Offset(0), Size(0), Abbrev((dwarf::Tag)Tag, dwarf::DW_CHILDREN_no),
+ Parent(0) {}
+ ~DIE();
// Accessors.
DIEAbbrev &getAbbrev() { return Abbrev; }
+ const DIEAbbrev &getAbbrev() const { return Abbrev; }
unsigned getAbbrevNumber() const { return Abbrev.getNumber(); }
- unsigned getTag() const { return Abbrev.getTag(); }
+ dwarf::Tag 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() const;
- void setTag(unsigned Tag) { Abbrev.setTag(Tag); }
+ /// 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(unsigned Attribute, unsigned Form, DIEValue *Value) {
+ void addValue(dwarf::Attribute Attribute, dwarf::Form Form,
+ DIEValue *Value) {
Abbrev.AddAttribute(Attribute, Form);
Values.push_back(Value);
}
/// addChild - Add a child to the DIE.
///
void addChild(DIE *Child) {
- if (Child->getParent()) {
- assert (Child->getParent() == this && "Unexpected DIE Parent!");
- return;
- }
+ assert(!Child->getParent());
Abbrev.setChildrenFlag(dwarf::DW_CHILDREN_yes);
Children.push_back(Child);
Child->Parent = this;
}
+ /// findAttribute - Find a value in the DIE with the attribute given,
+ /// returns NULL if no such attribute exists.
+ DIEValue *findAttribute(uint16_t Attribute) const;
+
#ifndef NDEBUG
- void print(raw_ostream &O, unsigned IncIndent = 0);
+ void print(raw_ostream &O, unsigned IndentCount = 0) const;
void dump();
#endif
};
enum {
isInteger,
isString,
+ isExpr,
isLabel,
isDelta,
isEntry,
- isBlock
+ isTypeSignature,
+ isBlock,
+ isLoc
};
protected:
/// Type - Type of data stored in the value.
/// EmitValue - Emit value via the Dwarf writer.
///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const = 0;
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const = 0;
/// SizeOf - Return the size of a value in bytes.
///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const = 0;
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const = 0;
#ifndef NDEBUG
- virtual void print(raw_ostream &O) = 0;
- void dump();
+ virtual void print(raw_ostream &O) const = 0;
+ void dump() const;
#endif
};
/// BestForm - Choose the best form for integer.
///
- static unsigned BestForm(bool IsSigned, uint64_t Int) {
+ 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;
/// EmitValue - Emit integer of appropriate size.
///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
uint64_t getValue() const { return Integer; }
/// SizeOf - Determine size of integer value in bytes.
///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
// Implement isa/cast/dyncast.
static bool classof(const DIEValue *I) { return I->getType() == isInteger; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O);
+ virtual void print(raw_ostream &O) const;
+#endif
+ };
+
+ //===--------------------------------------------------------------------===//
+ /// 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.
+ ///
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
+
+ /// getValue - Get MCExpr.
+ ///
+ const MCExpr *getValue() const { return Expr; }
+
+ /// SizeOf - Determine size of expression value in bytes.
+ ///
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isExpr; }
+
+#ifndef NDEBUG
+ virtual void print(raw_ostream &O) const;
#endif
};
//===--------------------------------------------------------------------===//
- /// DIELabel - A label expression DIE.
+ /// DIELabel - A label DIE.
//
class DIELabel : public DIEValue {
const MCSymbol *Label;
/// EmitValue - Emit label value.
///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
/// getValue - Get MCSymbol.
///
- const MCSymbol *getValue() const { return Label; }
+ const MCSymbol *getValue() const { return Label; }
/// SizeOf - Determine size of label value in bytes.
///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
// Implement isa/cast/dyncast.
static bool classof(const DIEValue *L) { return L->getType() == isLabel; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O);
+ virtual void print(raw_ostream &O) const;
#endif
};
/// EmitValue - Emit delta value.
///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
/// SizeOf - Determine size of delta value in bytes.
///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
// Implement isa/cast/dyncast.
static bool classof(const DIEValue *D) { return D->getType() == isDelta; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O);
+ virtual void print(raw_ostream &O) const;
#endif
};
+ //===--------------------------------------------------------------------===//
+ /// DIEString - A container for string values.
+ ///
+ class DIEString : public DIEValue {
+ const DIEValue *Access;
+ const StringRef Str;
+
+ public:
+ DIEString(const DIEValue *Acc, const StringRef S)
+ : DIEValue(isString), Access(Acc), Str(S) {}
+
+ /// getString - Grab the string out of the object.
+ StringRef getString() const { return Str; }
+
+ /// EmitValue - Emit delta value.
+ ///
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
+
+ /// SizeOf - Determine size of delta value in bytes.
+ ///
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *D) { return D->getType() == isString; }
+
+ #ifndef NDEBUG
+ virtual void print(raw_ostream &O) 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
class DIEEntry : public DIEValue {
DIE *const Entry;
public:
- explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {}
+ explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {
+ assert(E && "Cannot construct a DIEEntry with a null DIE");
+ }
DIE *getEntry() const { return Entry; }
/// EmitValue - Emit debug information entry offset.
///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
/// SizeOf - Determine size of debug information entry in bytes.
///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const {
- return sizeof(int32_t);
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
+ return Form == dwarf::DW_FORM_ref_addr ? getRefAddrSize(AP)
+ : sizeof(int32_t);
}
+ /// 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() == isEntry; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O);
+ virtual void print(raw_ostream &O) const;
+#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.
+ virtual void EmitValue(AsmPrinter *Asm, dwarf::Form Form) const;
+
+ /// Returns size of a ref_sig8 entry.
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
+ 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
+ virtual void print(raw_ostream &O) const;
+ void dump() const;
#endif
};
//===--------------------------------------------------------------------===//
- /// DIEBlock - A block of values. Primarily used for location expressions.
+ /// DIELoc - Represents an expression location.
//
- class DIEBlock : public DIEValue, public DIE {
+ class DIELoc : public DIEValue, public DIE {
unsigned Size; // Size in bytes excluding size header.
public:
- DIEBlock()
- : DIEValue(isBlock), DIE(0), Size(0) {}
- virtual ~DIEBlock() {}
+ DIELoc() : DIEValue(isLoc), DIE(0), Size(0) {}
+
+ /// ComputeSize - Calculate the size of the location expression.
+ ///
+ unsigned ComputeSize(AsmPrinter *AP) const;
- /// ComputeSize - calculate the size of the block.
+ /// setSize - Set the size of the location entry.
///
- unsigned ComputeSize(AsmPrinter *AP);
+ void setSize(unsigned Sz) { Size = Sz; }
/// BestForm - Choose the best form for data.
///
- unsigned BestForm() const {
+ 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 block data.
+ /// EmitValue - Emit location data.
///
- virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
- /// SizeOf - Determine size of block data in bytes.
+ /// SizeOf - Determine size of location data in bytes.
///
- virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
// Implement isa/cast/dyncast.
- static bool classof(const DIEValue *E) { return E->getType() == isBlock; }
+ static bool classof(const DIEValue *E) { return E->getType() == isLoc; }
#ifndef NDEBUG
- virtual void print(raw_ostream &O);
+ virtual void print(raw_ostream &O) const;
#endif
};
+ //===--------------------------------------------------------------------===//
+ /// DIEBlock - Represents a block of values.
+ //
+ class DIEBlock : public DIEValue, public DIE {
+ unsigned Size; // Size in bytes excluding size header.
+ public:
+ DIEBlock() : DIEValue(isBlock), DIE(0), Size(0) {}
+
+ /// ComputeSize - Calculate the size of the location expression.
+ ///
+ unsigned ComputeSize(AsmPrinter *AP) const;
+
+ /// setSize - Set the size of the block.
+ ///
+ void setSize(unsigned Sz) { Size = Sz; }
+
+ /// 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.
+ ///
+ virtual void EmitValue(AsmPrinter *AP, dwarf::Form Form) const;
+
+ /// SizeOf - Determine size of location data in bytes.
+ ///
+ virtual unsigned SizeOf(AsmPrinter *AP, dwarf::Form Form) const;
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEValue *E) { return E->getType() == isBlock; }
+
+ #ifndef NDEBUG
+ virtual void print(raw_ostream &O) const;
+ #endif
+ };
} // end llvm namespace
#endif
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