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diff --git a/contrib/llvm/lib/CodeGen/ELFWriter.h b/contrib/llvm/lib/CodeGen/ELFWriter.h
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+//===-- ELFWriter.h - Target-independent ELF writer support -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the ELFWriter class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ELFWRITER_H
+#define ELFWRITER_H
+
+#include "llvm/ADT/SetVector.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include <map>
+
+namespace llvm {
+  class BinaryObject;
+  class Constant;
+  class ConstantInt;
+  class ConstantStruct;
+  class ELFCodeEmitter;
+  class ELFRelocation;
+  class ELFSection;
+  struct ELFSym;
+  class GlobalVariable;
+  class JITDebugRegisterer;
+  class Mangler;
+  class MachineCodeEmitter;
+  class MachineConstantPoolEntry;
+  class ObjectCodeEmitter;
+  class MCAsmInfo;
+  class TargetELFWriterInfo;
+  class TargetLoweringObjectFile;
+  class raw_ostream;
+  class SectionKind;
+  class MCContext;
+  class TargetMachine;
+
+  typedef std::vector<ELFSym*>::iterator ELFSymIter;
+  typedef std::vector<ELFSection*>::iterator ELFSectionIter;
+  typedef SetVector<const GlobalValue*>::const_iterator PendingGblsIter;
+  typedef SetVector<const char *>::const_iterator PendingExtsIter;
+  typedef std::pair<const Constant *, int64_t> CstExprResTy;
+
+  /// ELFWriter - This class implements the common target-independent code for
+  /// writing ELF files.  Targets should derive a class from this to
+  /// parameterize the output format.
+  ///
+  class ELFWriter : public MachineFunctionPass {
+    friend class ELFCodeEmitter;
+    friend class JITDebugRegisterer;
+  public:
+    static char ID;
+
+    /// Return the ELFCodeEmitter as an instance of ObjectCodeEmitter
+    ObjectCodeEmitter *getObjectCodeEmitter() {
+      return reinterpret_cast<ObjectCodeEmitter*>(ElfCE);
+    }
+
+    ELFWriter(raw_ostream &O, TargetMachine &TM);
+    ~ELFWriter();
+
+  protected:
+    /// Output stream to send the resultant object file to.
+    raw_ostream &O;
+
+    /// Target machine description.
+    TargetMachine &TM;
+
+    /// Context object for machine code objects.
+    MCContext &OutContext;
+    
+    /// Target Elf Writer description.
+    const TargetELFWriterInfo *TEW;
+
+    /// Mang - The object used to perform name mangling for this module.
+    Mangler *Mang;
+
+    /// MCE - The MachineCodeEmitter object that we are exposing to emit machine
+    /// code for functions to the .o file.
+    ELFCodeEmitter *ElfCE;
+
+    /// TLOF - Target Lowering Object File, provide section names for globals 
+    /// and other object file specific stuff
+    const TargetLoweringObjectFile &TLOF;
+
+    /// MAI - Target Asm Info, provide information about section names for
+    /// globals and other target specific stuff.
+    const MCAsmInfo *MAI;
+
+    //===------------------------------------------------------------------===//
+    // Properties inferred automatically from the target machine.
+    //===------------------------------------------------------------------===//
+
+    /// is64Bit/isLittleEndian - This information is inferred from the target
+    /// machine directly, indicating whether to emit a 32- or 64-bit ELF file.
+    bool is64Bit, isLittleEndian;
+
+    /// doInitialization - Emit the file header and all of the global variables
+    /// for the module to the ELF file.
+    bool doInitialization(Module &M);
+    bool runOnMachineFunction(MachineFunction &MF);
+
+    /// doFinalization - Now that the module has been completely processed, emit
+    /// the ELF file to 'O'.
+    bool doFinalization(Module &M);
+
+  private:
+    /// Blob containing the Elf header
+    BinaryObject ElfHdr;
+
+    /// SectionList - This is the list of sections that we have emitted to the
+    /// file. Once the file has been completely built, the section header table
+    /// is constructed from this info.
+    std::vector<ELFSection*> SectionList;
+    unsigned NumSections;   // Always = SectionList.size()
+
+    /// SectionLookup - This is a mapping from section name to section number in
+    /// the SectionList. Used to quickly gather the Section Index from MAI names
+    std::map<std::string, ELFSection*> SectionLookup;
+
+    /// PendingGlobals - Globals not processed as symbols yet.
+    SetVector<const GlobalValue*> PendingGlobals;
+
+    /// GblSymLookup - This is a mapping from global value to a symbol index
+    /// in the symbol table or private symbols list. This is useful since reloc
+    /// symbol references must be quickly mapped to their indices on the lists.
+    std::map<const GlobalValue*, uint32_t> GblSymLookup;
+
+    /// PendingExternals - Externals not processed as symbols yet.
+    SetVector<const char *> PendingExternals;
+
+    /// ExtSymLookup - This is a mapping from externals to a symbol index
+    /// in the symbol table list. This is useful since reloc symbol references
+    /// must be quickly mapped to their symbol table indices.
+    std::map<const char *, uint32_t> ExtSymLookup;
+
+    /// SymbolList - This is the list of symbols emitted to the symbol table.
+    /// When the SymbolList is finally built, local symbols must be placed in
+    /// the beginning while non-locals at the end.
+    std::vector<ELFSym*> SymbolList;
+
+    /// PrivateSyms - Record private symbols, every symbol here must never be
+    /// present in the SymbolList.
+    std::vector<ELFSym*> PrivateSyms;
+
+    /// getSection - Return the section with the specified name, creating a new
+    /// section if one does not already exist.
+    ELFSection &getSection(const std::string &Name, unsigned Type,
+                           unsigned Flags = 0, unsigned Align = 0) {
+      ELFSection *&SN = SectionLookup[Name];
+      if (SN) return *SN;
+
+      SectionList.push_back(new ELFSection(Name, isLittleEndian, is64Bit));
+      SN = SectionList.back();
+      SN->SectionIdx = NumSections++;
+      SN->Type = Type;
+      SN->Flags = Flags;
+      SN->Link = ELF::SHN_UNDEF;
+      SN->Align = Align;
+      return *SN;
+    }
+
+    ELFSection &getNonExecStackSection() {
+      return getSection(".note.GNU-stack", ELF::SHT_PROGBITS, 0, 1);
+    }
+
+    ELFSection &getSymbolTableSection() {
+      return getSection(".symtab", ELF::SHT_SYMTAB, 0);
+    }
+
+    ELFSection &getStringTableSection() {
+      return getSection(".strtab", ELF::SHT_STRTAB, 0, 1);
+    }
+
+    ELFSection &getSectionHeaderStringTableSection() {
+      return getSection(".shstrtab", ELF::SHT_STRTAB, 0, 1);
+    }
+
+    ELFSection &getNullSection() {
+      return getSection("", ELF::SHT_NULL, 0);
+    }
+
+    ELFSection &getDataSection();
+    ELFSection &getBSSSection();
+    ELFSection &getCtorSection();
+    ELFSection &getDtorSection();
+    ELFSection &getJumpTableSection();
+    ELFSection &getConstantPoolSection(MachineConstantPoolEntry &CPE);
+    ELFSection &getTextSection(const Function *F);
+    ELFSection &getRelocSection(ELFSection &S);
+
+    // Helpers for obtaining ELF specific info.
+    unsigned getGlobalELFBinding(const GlobalValue *GV);
+    unsigned getGlobalELFType(const GlobalValue *GV);
+    unsigned getGlobalELFVisibility(const GlobalValue *GV);
+
+    // AddPendingGlobalSymbol - Add a global to be processed and to
+    // the global symbol lookup, use a zero index because the table
+    // index will be determined later.
+    void AddPendingGlobalSymbol(const GlobalValue *GV, 
+                                bool AddToLookup = false);
+    
+    // AddPendingExternalSymbol - Add the external to be processed
+    // and to the external symbol lookup, use a zero index because
+    // the symbol table index will be determined later.
+    void AddPendingExternalSymbol(const char *External);
+
+    // AddToSymbolList - Update the symbol lookup and If the symbol is 
+    // private add it to PrivateSyms list, otherwise to SymbolList. 
+    void AddToSymbolList(ELFSym *GblSym);
+
+    // As we complete the ELF file, we need to update fields in the ELF header
+    // (e.g. the location of the section table).  These members keep track of
+    // the offset in ELFHeader of these various pieces to update and other
+    // locations in the file.
+    unsigned ELFHdr_e_shoff_Offset;     // e_shoff    in ELF header.
+    unsigned ELFHdr_e_shstrndx_Offset;  // e_shstrndx in ELF header.
+    unsigned ELFHdr_e_shnum_Offset;     // e_shnum    in ELF header.
+
+  private:
+    void EmitGlobal(const GlobalValue *GV);
+    void EmitGlobalConstant(const Constant *C, ELFSection &GblS);
+    void EmitGlobalConstantStruct(const ConstantStruct *CVS,
+                                  ELFSection &GblS);
+    void EmitGlobalConstantLargeInt(const ConstantInt *CI, ELFSection &S);
+    void EmitGlobalDataRelocation(const GlobalValue *GV, unsigned Size, 
+                                  ELFSection &GblS, int64_t Offset = 0);
+    bool EmitSpecialLLVMGlobal(const GlobalVariable *GV);
+    void EmitXXStructorList(const Constant *List, ELFSection &Xtor);
+    void EmitRelocations();
+    void EmitRelocation(BinaryObject &RelSec, ELFRelocation &Rel, bool HasRelA);
+    void EmitSectionHeader(BinaryObject &SHdrTab, const ELFSection &SHdr);
+    void EmitSectionTableStringTable();
+    void EmitSymbol(BinaryObject &SymbolTable, ELFSym &Sym);
+    void EmitSymbolTable();
+    void EmitStringTable(const std::string &ModuleName);
+    void OutputSectionsAndSectionTable();
+    void RelocateField(BinaryObject &BO, uint32_t Offset, int64_t Value,
+                       unsigned Size);
+    unsigned SortSymbols();
+    CstExprResTy ResolveConstantExpr(const Constant *CV);
+  };
+}
+
+#endif