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diff --git a/include/llvm/Target/TargetLoweringObjectFile.h b/include/llvm/Target/TargetLoweringObjectFile.h
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+++ b/include/llvm/Target/TargetLoweringObjectFile.h
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+//===-- llvm/Target/TargetLoweringObjectFile.h - Object Info ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements classes used to handle lowerings specific to common
+// object file formats.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
+#define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
+
+#include "llvm/MC/SectionKind.h"
+
+namespace llvm {
+  class MachineModuleInfo;
+  class Mangler;
+  class MCAsmInfo;
+  class MCExpr;
+  class MCSection;
+  class MCSectionMachO;
+  class MCContext;
+  class GlobalValue;
+  class StringRef;
+  class TargetMachine;
+  
+class TargetLoweringObjectFile {
+  MCContext *Ctx;
+  
+  TargetLoweringObjectFile(const TargetLoweringObjectFile&); // DO NOT IMPLEMENT
+  void operator=(const TargetLoweringObjectFile&);           // DO NOT IMPLEMENT
+protected:
+  
+  TargetLoweringObjectFile();
+  
+  /// TextSection - Section directive for standard text.
+  ///
+  const MCSection *TextSection;
+  
+  /// DataSection - Section directive for standard data.
+  ///
+  const MCSection *DataSection;
+  
+  /// BSSSection - Section that is default initialized to zero.
+  const MCSection *BSSSection;
+  
+  /// ReadOnlySection - Section that is readonly and can contain arbitrary
+  /// initialized data.  Targets are not required to have a readonly section.
+  /// If they don't, various bits of code will fall back to using the data
+  /// section for constants.
+  const MCSection *ReadOnlySection;
+  
+  /// StaticCtorSection - This section contains the static constructor pointer
+  /// list.
+  const MCSection *StaticCtorSection;
+
+  /// StaticDtorSection - This section contains the static destructor pointer
+  /// list.
+  const MCSection *StaticDtorSection;
+  
+  /// LSDASection - If exception handling is supported by the target, this is
+  /// the section the Language Specific Data Area information is emitted to.
+  const MCSection *LSDASection;
+  
+  /// EHFrameSection - If exception handling is supported by the target, this is
+  /// the section the EH Frame is emitted to.
+  const MCSection *EHFrameSection;
+  
+  // Dwarf sections for debug info.  If a target supports debug info, these must
+  // be set.
+  const MCSection *DwarfAbbrevSection;
+  const MCSection *DwarfInfoSection;
+  const MCSection *DwarfLineSection;
+  const MCSection *DwarfFrameSection;
+  const MCSection *DwarfPubNamesSection;
+  const MCSection *DwarfPubTypesSection;
+  const MCSection *DwarfDebugInlineSection;
+  const MCSection *DwarfStrSection;
+  const MCSection *DwarfLocSection;
+  const MCSection *DwarfARangesSection;
+  const MCSection *DwarfRangesSection;
+  const MCSection *DwarfMacroInfoSection;
+  
+public:
+  
+  MCContext &getContext() const { return *Ctx; }
+  
+
+  virtual ~TargetLoweringObjectFile();
+  
+  /// Initialize - this method must be called before any actual lowering is
+  /// done.  This specifies the current context for codegen, and gives the
+  /// lowering implementations a chance to set up their default sections.
+  virtual void Initialize(MCContext &ctx, const TargetMachine &TM) {
+    Ctx = &ctx;
+  }
+  
+  
+  const MCSection *getTextSection() const { return TextSection; }
+  const MCSection *getDataSection() const { return DataSection; }
+  const MCSection *getBSSSection() const { return BSSSection; }
+  const MCSection *getStaticCtorSection() const { return StaticCtorSection; }
+  const MCSection *getStaticDtorSection() const { return StaticDtorSection; }
+  const MCSection *getLSDASection() const { return LSDASection; }
+  const MCSection *getEHFrameSection() const { return EHFrameSection; }
+  const MCSection *getDwarfAbbrevSection() const { return DwarfAbbrevSection; }
+  const MCSection *getDwarfInfoSection() const { return DwarfInfoSection; }
+  const MCSection *getDwarfLineSection() const { return DwarfLineSection; }
+  const MCSection *getDwarfFrameSection() const { return DwarfFrameSection; }
+  const MCSection *getDwarfPubNamesSection() const{return DwarfPubNamesSection;}
+  const MCSection *getDwarfPubTypesSection() const{return DwarfPubTypesSection;}
+  const MCSection *getDwarfDebugInlineSection() const {
+    return DwarfDebugInlineSection;
+  }
+  const MCSection *getDwarfStrSection() const { return DwarfStrSection; }
+  const MCSection *getDwarfLocSection() const { return DwarfLocSection; }
+  const MCSection *getDwarfARangesSection() const { return DwarfARangesSection;}
+  const MCSection *getDwarfRangesSection() const { return DwarfRangesSection; }
+  const MCSection *getDwarfMacroInfoSection() const {
+    return DwarfMacroInfoSection;
+  }
+  
+  /// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
+  /// decide not to emit the UsedDirective for some symbols in llvm.used.
+  /// FIXME: REMOVE this (rdar://7071300)
+  virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV,
+                                          Mangler *) const {
+    return GV != 0;
+  }
+  
+  /// getSectionForConstant - Given a constant with the SectionKind, return a
+  /// section that it should be placed in.
+  virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
+  
+  /// getKindForGlobal - Classify the specified global variable into a set of
+  /// target independent categories embodied in SectionKind.
+  static SectionKind getKindForGlobal(const GlobalValue *GV,
+                                      const TargetMachine &TM);
+  
+  /// SectionForGlobal - This method computes the appropriate section to emit
+  /// the specified global variable or function definition.  This should not
+  /// be passed external (or available externally) globals.
+  const MCSection *SectionForGlobal(const GlobalValue *GV,
+                                    SectionKind Kind, Mangler *Mang,
+                                    const TargetMachine &TM) const;
+  
+  /// SectionForGlobal - This method computes the appropriate section to emit
+  /// the specified global variable or function definition.  This should not
+  /// be passed external (or available externally) globals.
+  const MCSection *SectionForGlobal(const GlobalValue *GV,
+                                    Mangler *Mang,
+                                    const TargetMachine &TM) const {
+    return SectionForGlobal(GV, getKindForGlobal(GV, TM), Mang, TM);
+  }
+  
+  
+  
+  /// getExplicitSectionGlobal - Targets should implement this method to assign
+  /// a section to globals with an explicit section specfied.  The
+  /// implementation of this method can assume that GV->hasSection() is true.
+  virtual const MCSection *
+  getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, 
+                           Mangler *Mang, const TargetMachine &TM) const = 0;
+  
+  /// getSpecialCasedSectionGlobals - Allow the target to completely override
+  /// section assignment of a global.
+  virtual const MCSection *
+  getSpecialCasedSectionGlobals(const GlobalValue *GV, Mangler *Mang,
+                                SectionKind Kind) const {
+    return 0;
+  }
+  
+  /// getSymbolForDwarfGlobalReference - Return an MCExpr to use for a
+  /// pc-relative reference to the specified global variable from exception
+  /// handling information.  In addition to the symbol, this returns
+  /// by-reference:
+  ///
+  /// IsIndirect - True if the returned symbol is actually a stub that contains
+  ///    the address of the symbol, false if the symbol is the global itself.
+  ///
+  /// IsPCRel - True if the symbol reference is already pc-relative, false if
+  ///    the caller needs to subtract off the address of the reference from the
+  ///    symbol.
+  ///
+  virtual const MCExpr *
+  getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
+                                   MachineModuleInfo *MMI,
+                                   bool &IsIndirect, bool &IsPCRel) const;
+  
+protected:
+  virtual const MCSection *
+  SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
+                         Mangler *Mang, const TargetMachine &TM) const;
+};
+  
+  
+  
+
+class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
+  mutable void *UniquingMap;
+protected:
+  /// TLSDataSection - Section directive for Thread Local data.
+  ///
+  const MCSection *TLSDataSection;        // Defaults to ".tdata".
+  
+  /// TLSBSSSection - Section directive for Thread Local uninitialized data.
+  /// Null if this target doesn't support a BSS section.
+  ///
+  const MCSection *TLSBSSSection;         // Defaults to ".tbss".
+  
+  const MCSection *DataRelSection;
+  const MCSection *DataRelLocalSection;
+  const MCSection *DataRelROSection;
+  const MCSection *DataRelROLocalSection;
+  
+  const MCSection *MergeableConst4Section;
+  const MCSection *MergeableConst8Section;
+  const MCSection *MergeableConst16Section;
+  
+protected:
+  const MCSection *getELFSection(StringRef Section, unsigned Type, 
+                                 unsigned Flags, SectionKind Kind,
+                                 bool IsExplicit = false) const;
+public:
+  TargetLoweringObjectFileELF() : UniquingMap(0) {}
+  ~TargetLoweringObjectFileELF();
+  
+  virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
+  
+  /// getSectionForConstant - Given a constant with the SectionKind, return a
+  /// section that it should be placed in.
+  virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
+  
+  
+  virtual const MCSection *
+  getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, 
+                           Mangler *Mang, const TargetMachine &TM) const;
+  
+  virtual const MCSection *
+  SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
+                         Mangler *Mang, const TargetMachine &TM) const;
+};
+
+  
+  
+class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
+  mutable void *UniquingMap;
+  
+  const MCSection *CStringSection;
+  const MCSection *UStringSection;
+  const MCSection *TextCoalSection;
+  const MCSection *ConstTextCoalSection;
+  const MCSection *ConstDataCoalSection;
+  const MCSection *ConstDataSection;
+  const MCSection *DataCoalSection;
+  const MCSection *FourByteConstantSection;
+  const MCSection *EightByteConstantSection;
+  const MCSection *SixteenByteConstantSection;
+  
+  const MCSection *LazySymbolPointerSection;
+  const MCSection *NonLazySymbolPointerSection;
+public:
+  TargetLoweringObjectFileMachO() : UniquingMap(0) {}
+  ~TargetLoweringObjectFileMachO();
+  
+  virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
+
+  virtual const MCSection *
+  SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
+                         Mangler *Mang, const TargetMachine &TM) const;
+  
+  virtual const MCSection *
+  getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, 
+                           Mangler *Mang, const TargetMachine &TM) const;
+  
+  virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
+  
+  /// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
+  /// decide not to emit the UsedDirective for some symbols in llvm.used.
+  /// FIXME: REMOVE this (rdar://7071300)
+  virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV,
+                                          Mangler *) const;
+
+  /// getMachOSection - Return the MCSection for the specified mach-o section.
+  /// This requires the operands to be valid.
+  const MCSectionMachO *getMachOSection(const StringRef &Segment,
+                                        const StringRef &Section,
+                                        unsigned TypeAndAttributes,
+                                        SectionKind K) const {
+    return getMachOSection(Segment, Section, TypeAndAttributes, 0, K);
+  }
+  const MCSectionMachO *getMachOSection(const StringRef &Segment,
+                                        const StringRef &Section,
+                                        unsigned TypeAndAttributes,
+                                        unsigned Reserved2,
+                                        SectionKind K) const;
+
+  /// getTextCoalSection - Return the "__TEXT,__textcoal_nt" section we put weak
+  /// text symbols into.
+  const MCSection *getTextCoalSection() const {
+    return TextCoalSection;
+  }
+  
+  /// getConstTextCoalSection - Return the "__TEXT,__const_coal" section
+  /// we put weak read-only symbols into.
+  const MCSection *getConstTextCoalSection() const {
+    return ConstTextCoalSection;
+  }
+  
+  /// getLazySymbolPointerSection - Return the section corresponding to
+  /// the .lazy_symbol_pointer directive.
+  const MCSection *getLazySymbolPointerSection() const {
+    return LazySymbolPointerSection;
+  }
+  
+  /// getNonLazySymbolPointerSection - Return the section corresponding to
+  /// the .non_lazy_symbol_pointer directive.
+  const MCSection *getNonLazySymbolPointerSection() const {
+    return NonLazySymbolPointerSection;
+  }
+  
+  /// getSymbolForDwarfGlobalReference - The mach-o version of this method
+  /// defaults to returning a stub reference.
+  virtual const MCExpr *
+  getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
+                                   MachineModuleInfo *MMI,
+                                   bool &IsIndirect, bool &IsPCRel) const;
+};
+
+
+
+class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
+  mutable void *UniquingMap;
+public:
+  TargetLoweringObjectFileCOFF() : UniquingMap(0) {}
+  ~TargetLoweringObjectFileCOFF();
+  
+  virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
+  
+  virtual const MCSection *
+  getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, 
+                           Mangler *Mang, const TargetMachine &TM) const;
+  
+  virtual const MCSection *
+  SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
+                         Mangler *Mang, const TargetMachine &TM) const;
+
+  /// getCOFFSection - Return the MCSection for the specified COFF section.
+  /// FIXME: Switch this to a semantic view eventually.
+  const MCSection *getCOFFSection(const char *Name, bool isDirective,
+                                  SectionKind K) const;
+};
+
+} // end namespace llvm
+
+#endif