1 files changed, 434 insertions, 0 deletions
diff --git a/contrib/llvm/lib/CodeGen/AsmPrinter/DIE.h b/contrib/llvm/lib/CodeGen/AsmPrinter/DIE.h
new file mode 100644
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--- /dev/null
+++ b/contrib/llvm/lib/CodeGen/AsmPrinter/DIE.h
@@ -0,0 +1,434 @@
+//===--- 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 CODEGEN_ASMPRINTER_DIE_H__
+#define CODEGEN_ASMPRINTER_DIE_H__
+
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Dwarf.h"
+#include <vector>
+
+namespace llvm {
+  class AsmPrinter;
+  class MCSymbol;
+  class raw_ostream;
+
+  //===--------------------------------------------------------------------===//
+  /// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a
+  /// Dwarf abbreviation.
+  class DIEAbbrevData {
+    /// Attribute - Dwarf attribute code.
+    ///
+    unsigned Attribute;
+
+    /// Form - Dwarf form code.
+    ///
+    unsigned Form;
+  public:
+    DIEAbbrevData(unsigned A, unsigned F) : Attribute(A), Form(F) {}
+
+    // Accessors.
+    unsigned getAttribute() const { return Attribute; }
+    unsigned 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 {
+    /// Tag - Dwarf tag code.
+    ///
+    unsigned Tag;
+
+    /// Unique number for node.
+    ///
+    unsigned Number;
+
+    /// ChildrenFlag - Dwarf children flag.
+    ///
+    unsigned ChildrenFlag;
+
+    /// Data - Raw data bytes for abbreviation.
+    ///
+    SmallVector<DIEAbbrevData, 8> Data;
+
+  public:
+    DIEAbbrev(unsigned T, unsigned C) : Tag(T), ChildrenFlag(C), Data() {}
+    virtual ~DIEAbbrev() {}
+
+    // Accessors.
+    unsigned getTag() const { return Tag; }
+    unsigned getNumber() const { return Number; }
+    unsigned getChildrenFlag() const { return ChildrenFlag; }
+    const SmallVector<DIEAbbrevData, 8> &getData() const { return Data; }
+    void setTag(unsigned T) { Tag = T; }
+    void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; }
+    void setNumber(unsigned N) { Number = N; }
+
+    /// AddAttribute - Adds another set of attribute information to the
+    /// abbreviation.
+    void AddAttribute(unsigned Attribute, unsigned Form) {
+      Data.push_back(DIEAbbrevData(Attribute, Form));
+    }
+
+    /// AddFirstAttribute - Adds a set of attribute information to the front
+    /// of the abbreviation.
+    void AddFirstAttribute(unsigned Attribute, unsigned Form) {
+      Data.insert(Data.begin(), 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 it's organization.
+  class DIEValue;
+
+  class DIE {
+  protected:
+    /// Abbrev - Buffer for constructing abbreviation.
+    ///
+    DIEAbbrev Abbrev;
+
+    /// Offset - Offset in debug info section.
+    ///
+    unsigned Offset;
+
+    /// Size - Size of instance + children.
+    ///
+    unsigned Size;
+
+    /// Children DIEs.
+    ///
+    std::vector<DIE *> Children;
+
+    DIE *Parent;
+
+    /// Attributes values.
+    ///
+    SmallVector<DIEValue*, 32> Values;
+
+    // Private data for print()
+    mutable unsigned IndentCount;
+  public:
+    explicit DIE(unsigned Tag)
+      : Abbrev(Tag, dwarf::DW_CHILDREN_no), Offset(0),
+        Size(0), Parent (0), IndentCount(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 SmallVector<DIEValue*, 32> &getValues() const { return Values; }
+    DIE *getParent() const { return Parent; }
+    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);
+    }
+
+    /// SiblingOffset - Return the offset of the debug information entry's
+    /// sibling.
+    unsigned getSiblingOffset() const { return Offset + Size; }
+
+    /// addSiblingOffset - Add a sibling offset field to the front of the DIE.
+    /// The caller is responsible for deleting the return value at or after the
+    /// same time it destroys this DIE.
+    ///
+    DIEValue *addSiblingOffset(BumpPtrAllocator &A);
+
+    /// 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;
+    }
+
+#ifndef NDEBUG
+    void print(raw_ostream &O, unsigned IncIndent = 0);
+    void dump();
+#endif
+  };
+
+  //===--------------------------------------------------------------------===//
+  /// DIEValue - A debug information entry value.
+  ///
+  class DIEValue {
+  public:
+    enum {
+      isInteger,
+      isString,
+      isLabel,
+      isSectionOffset,
+      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;
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIEValue *) { return true; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O) = 0;
+    void dump();
+#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) {
+        if ((char)Int == (signed)Int)   return dwarf::DW_FORM_data1;
+        if ((short)Int == (signed)Int)  return dwarf::DW_FORM_data2;
+        if ((int)Int == (signed)Int)    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.
+    ///
+    virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+
+    uint64_t getValue() const { return Integer; }
+
+    /// SizeOf - Determine size of integer value in bytes.
+    ///
+    virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIEInteger *) { return true; }
+    static bool classof(const DIEValue *I) { return I->getType() == isInteger; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O);
+#endif
+  };
+
+  //===--------------------------------------------------------------------===//
+  /// DIEString - A string value DIE. This DIE keeps string reference only.
+  ///
+  class DIEString : public DIEValue {
+    const StringRef Str;
+  public:
+    explicit DIEString(const StringRef S) : DIEValue(isString), Str(S) {}
+
+    /// EmitValue - Emit string value.
+    ///
+    virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+
+    /// SizeOf - Determine size of string value in bytes.
+    ///
+    virtual unsigned SizeOf(AsmPrinter *AP, unsigned /*Form*/) const {
+      return Str.size() + sizeof(char); // sizeof('\0');
+    }
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIEString *) { return true; }
+    static bool classof(const DIEValue *S) { return S->getType() == isString; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O);
+#endif
+  };
+
+  //===--------------------------------------------------------------------===//
+  /// DIELabel - A label expression DIE.
+  //
+  class DIELabel : public DIEValue {
+    const MCSymbol *Label;
+  public:
+    explicit DIELabel(const MCSymbol *L) : DIEValue(isLabel), Label(L) {}
+
+    /// EmitValue - Emit label value.
+    ///
+    virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+
+    /// getValue - Get MCSymbol.
+    ///
+    const MCSymbol *getValue()       const { return Label; }
+
+    /// SizeOf - Determine size of label value in bytes.
+    ///
+    virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIELabel *)  { return true; }
+    static bool classof(const DIEValue *L) { return L->getType() == isLabel; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O);
+#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.
+    ///
+    virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+
+    /// SizeOf - Determine size of delta value in bytes.
+    ///
+    virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIEDelta *)  { return true; }
+    static bool classof(const DIEValue *D) { return D->getType() == isDelta; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O);
+#endif
+  };
+
+  //===--------------------------------------------------------------------===//
+  /// DIEntry - 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) {}
+
+    DIE *getEntry() const { return Entry; }
+
+    /// EmitValue - Emit debug information entry offset.
+    ///
+    virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+
+    /// SizeOf - Determine size of debug information entry in bytes.
+    ///
+    virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const {
+      return sizeof(int32_t);
+    }
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIEEntry *)  { return true; }
+    static bool classof(const DIEValue *E) { return E->getType() == isEntry; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O);
+#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;
+    }
+
+    /// EmitValue - Emit block data.
+    ///
+    virtual void EmitValue(AsmPrinter *AP, unsigned Form) const;
+
+    /// SizeOf - Determine size of block data in bytes.
+    ///
+    virtual unsigned SizeOf(AsmPrinter *AP, unsigned Form) const;
+
+    // Implement isa/cast/dyncast.
+    static bool classof(const DIEBlock *)  { return true; }
+    static bool classof(const DIEValue *E) { return E->getType() == isBlock; }
+
+#ifndef NDEBUG
+    virtual void print(raw_ostream &O);
+#endif
+  };
+
+} // end llvm namespace
+
+#endif