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Diffstat (limited to 'lib/CodeGen/AsmPrinter/DIE.h')
| -rw-r--r-- | lib/CodeGen/AsmPrinter/DIE.h | 587 |
1 files changed, 0 insertions, 587 deletions
diff --git a/lib/CodeGen/AsmPrinter/DIE.h b/lib/CodeGen/AsmPrinter/DIE.h deleted file mode 100644 index e310aef..0000000 --- a/lib/CodeGen/AsmPrinter/DIE.h +++ /dev/null @@ -1,587 +0,0 @@ -//===--- lib/CodeGen/DIE.h - DWARF Info Entries -----------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// Data structures for DWARF info entries. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DIE_H -#define LLVM_LIB_CODEGEN_ASMPRINTER_DIE_H - -#include "llvm/ADT/FoldingSet.h" -#include "llvm/ADT/SmallVector.h" -#include "llvm/Support/Dwarf.h" -#include <vector> - -namespace llvm { -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; - - /// 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; - - /// 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; - -#ifndef NDEBUG - void print(raw_ostream &O); - void dump(); -#endif -}; - -//===--------------------------------------------------------------------===// -/// 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; - - /// Abbrev - Buffer for constructing abbreviation. - /// - DIEAbbrev Abbrev; - - /// Children DIEs. - /// - // This can't be a vector<DIE> because pointer validity is requirent for the - // Parent pointer and DIEEntry. - // It can't be a list<DIE> because some clients need pointer validity before - // the object has been added to any child list - // (eg: DwarfUnit::constructVariableDIE). These aren't insurmountable, but may - // be more convoluted than beneficial. - std::vector<std::unique_ptr<DIE>> Children; - - DIE *Parent; - - /// 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); - } - - /// addChild - Add a child to the DIE. - /// - void addChild(std::unique_ptr<DIE> Child) { - assert(!Child->getParent()); - Abbrev.setChildrenFlag(dwarf::DW_CHILDREN_yes); - Child->Parent = this; - Children.push_back(std::move(Child)); - } - - /// 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 - void print(raw_ostream &O, unsigned IndentCount = 0) const; - void dump(); -#endif -}; - -//===--------------------------------------------------------------------===// -/// 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, - }; - -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) const override; -#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. - /// - 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 - void print(raw_ostream &O) const override; -#endif -}; - -//===--------------------------------------------------------------------===// -/// DIELabel - A label DIE. -// -class DIELabel : public DIEValue { - const MCSymbol *Label; - -public: - explicit DIELabel(const MCSymbol *L) : DIEValue(isLabel), Label(L) {} - - /// EmitValue - Emit label value. - /// - void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override; - - /// getValue - Get MCSymbol. - /// - const MCSymbol *getValue() const { return Label; } - - /// 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 *L) { return L->getType() == isLabel; } - -#ifndef NDEBUG - void print(raw_ostream &O) const override; -#endif -}; - -//===--------------------------------------------------------------------===// -/// DIEDelta - A simple label difference DIE. -/// -class DIEDelta : public DIEValue { - const MCSymbol *LabelHi; - const MCSymbol *LabelLo; - -public: - DIEDelta(const MCSymbol *Hi, const MCSymbol *Lo) - : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {} - - /// EmitValue - Emit delta value. - /// - void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override; - - /// 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 *D) { return D->getType() == isDelta; } - -#ifndef NDEBUG - void print(raw_ostream &O) const override; -#endif -}; - -//===--------------------------------------------------------------------===// -/// DIEString - A container for string values. -/// -class DIEString : public DIEValue { - const DIEValue *Access; - StringRef Str; - -public: - DIEString(const DIEValue *Acc, 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. - /// - void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override; - - /// 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 *D) { return D->getType() == isString; } - -#ifndef NDEBUG - 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 &Entry; - -public: - explicit DIEEntry(DIE &E) : DIEValue(isEntry), Entry(E) { - } - - DIE &getEntry() const { return Entry; } - - /// EmitValue - Emit debug information entry offset. - /// - void EmitValue(AsmPrinter *AP, dwarf::Form Form) const override; - - /// 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); - } - - /// 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 - 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 -}; - -//===--------------------------------------------------------------------===// -/// 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) {} - - /// ComputeSize - Calculate the size of the location expression. - /// - unsigned ComputeSize(AsmPrinter *AP) 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 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() == isLoc; } - -#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 - void print(raw_ostream &O) const override; -#endif -}; - -//===--------------------------------------------------------------------===// -/// 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 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() == isLocList; } - -#ifndef NDEBUG - void print(raw_ostream &O) const override; -#endif -}; - -} // end llvm namespace - -#endif |