diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 071c649..38f1742 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -175,6 +175,7 @@
   MachineModuleInfo();  // DUMMY CONSTRUCTOR, DO NOT CALL.
   // Real constructor.
   MachineModuleInfo(const MCAsmInfo &MAI, const MCRegisterInfo &MRI,
+                    const MCObjectFileInfo *MOFI,
                     const TargetAsmInfo *TAI);
   ~MachineModuleInfo();
 
diff --git a/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h b/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
index 711280e..a42aa64 100644
--- a/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
+++ b/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
@@ -33,42 +33,13 @@
 
 
 class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
-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;
 public:
-  TargetLoweringObjectFileELF();
-  ~TargetLoweringObjectFileELF() {}
-
-  virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
-
-  virtual const MCSection *getEHFrameSection() const;
-  virtual const MCSection *getWin64EHFuncTableSection(StringRef) const {
-    return NULL;
-  }
-  virtual const MCSection *getWin64EHTableSection(StringRef) const{return NULL;}
+  virtual ~TargetLoweringObjectFileELF() {}
 
   virtual void emitPersonalityValue(MCStreamer &Streamer,
                                     const TargetMachine &TM,
                                     const MCSymbol *Sym) const;
 
-  const MCSection *getDataRelSection() const { return DataRelSection; }
-
   /// getSectionForConstant - Given a constant with the SectionKind, return a
   /// section that it should be placed in.
   virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
@@ -99,48 +70,8 @@
 
 
 class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
-  /// TLSDataSection - Section for thread local data.
-  ///
-  const MCSection *TLSDataSection;        // Defaults to ".tdata".
-
-  /// TLSBSSSection - Section for thread local uninitialized data.
-  ///
-  const MCSection *TLSBSSSection;         // Defaults to ".tbss".
-  
-  /// TLSTLVSection - Section for thread local structure information.
-  /// Contains the source code name of the variable, visibility and a pointer
-  /// to the initial value (.tdata or .tbss).
-  const MCSection *TLSTLVSection;         // Defaults to ".tlv".
-  
-  /// TLSThreadInitSection - Section for thread local data initialization
-  /// functions.
-  const MCSection *TLSThreadInitSection;  // Defaults to ".thread_init_func".
-  
-  const MCSection *CStringSection;
-  const MCSection *UStringSection;
-  const MCSection *TextCoalSection;
-  const MCSection *ConstTextCoalSection;
-  const MCSection *ConstDataSection;
-  const MCSection *DataCoalSection;
-  const MCSection *DataCommonSection;
-  const MCSection *DataBSSSection;
-  const MCSection *FourByteConstantSection;
-  const MCSection *EightByteConstantSection;
-  const MCSection *SixteenByteConstantSection;
-
-  const MCSection *LazySymbolPointerSection;
-  const MCSection *NonLazySymbolPointerSection;
 public:
-  TargetLoweringObjectFileMachO();
-  ~TargetLoweringObjectFileMachO() {}
-
-  virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
-
-  virtual const MCSection *getEHFrameSection() const;
-  virtual const MCSection *getWin64EHFuncTableSection(StringRef) const {
-    return NULL;
-  }
-  virtual const MCSection *getWin64EHTableSection(StringRef) const{return NULL;}
+  virtual ~TargetLoweringObjectFileMachO() {}
 
   virtual const MCSection *
   SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
@@ -158,30 +89,6 @@
   virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV,
                                           Mangler *) 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;
-  }
-
   /// getExprForDwarfGlobalReference - The mach-o version of this method
   /// defaults to returning a stub reference.
   virtual const MCExpr *
@@ -203,20 +110,8 @@
 
 
 class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
-  const MCSection *DrectveSection;
-  const MCSection *PDataSection;
-  const MCSection *XDataSection;
 public:
-  TargetLoweringObjectFileCOFF();
-  ~TargetLoweringObjectFileCOFF() {}
-
-  virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
-
-  virtual const MCSection *getEHFrameSection() const;
-  virtual const MCSection *getWin64EHFuncTableSection(StringRef) const;
-  virtual const MCSection *getWin64EHTableSection(StringRef) const;
-
-  virtual const MCSection *getDrectveSection() const { return DrectveSection; }
+  virtual ~TargetLoweringObjectFileCOFF() {}
 
   virtual const MCSection *
   getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
diff --git a/include/llvm/MC/MCContext.h b/include/llvm/MC/MCContext.h
index cdaa21f..9de89fe 100644
--- a/include/llvm/MC/MCContext.h
+++ b/include/llvm/MC/MCContext.h
@@ -26,6 +26,7 @@
   class MCLabel;
   class MCDwarfFile;
   class MCDwarfLoc;
+  class MCObjectFileInfo;
   class MCRegisterInfo;
   class MCLineSection;
   class StringRef;
@@ -50,6 +51,9 @@
     /// The MCRegisterInfo for this target.
     const MCRegisterInfo &MRI;
 
+    /// The MCObjectFileInfo for this target.
+    const MCObjectFileInfo *MOFI;
+
     const TargetAsmInfo *TAI;
 
     /// Allocator - Allocator object used for creating machine code objects.
@@ -115,13 +119,15 @@
 
   public:
     explicit MCContext(const MCAsmInfo &MAI, const MCRegisterInfo &MRI,
-                       const TargetAsmInfo *TAI);
+                       const MCObjectFileInfo *MOFI, const TargetAsmInfo *TAI);
     ~MCContext();
 
     const MCAsmInfo &getAsmInfo() const { return MAI; }
 
     const MCRegisterInfo &getRegisterInfo() const { return MRI; }
 
+    const MCObjectFileInfo *getObjectFileInfo() const { return MOFI; }
+
     const TargetAsmInfo &getTargetAsmInfo() const { return *TAI; }
 
     void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; }
diff --git a/include/llvm/MC/MCObjectFileInfo.h b/include/llvm/MC/MCObjectFileInfo.h
new file mode 100644
index 0000000..b507c0c
--- /dev/null
+++ b/include/llvm/MC/MCObjectFileInfo.h
@@ -0,0 +1,278 @@
+//===-- llvm/MC/MCObjectFileInfo.h - Object File 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 describes common object file formats.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_MCBJECTFILEINFO_H
+#define LLVM_MC_MCBJECTFILEINFO_H
+
+#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/MC/SectionKind.h"
+
+namespace llvm {
+class MCContext;
+class MCSection;
+class Triple;
+  
+class MCObjectFileInfo {  
+protected:
+  /// CommDirectiveSupportsAlignment - True if .comm supports alignment.  This
+  /// is a hack for as long as we support 10.4 Tiger, whose assembler doesn't
+  /// support alignment on comm.
+  bool CommDirectiveSupportsAlignment;
+  
+  /// SupportsWeakEmptyEHFrame - True if target object file supports a
+  /// weak_definition of constant 0 for an omitted EH frame.
+  bool SupportsWeakOmittedEHFrame;
+  
+  /// IsFunctionEHFrameSymbolPrivate - This flag is set to true if the
+  /// "EH_frame" symbol for EH information should be an assembler temporary (aka
+  /// private linkage, aka an L or .L label) or false if it should be a normal
+  /// non-.globl label.  This defaults to true.
+  bool IsFunctionEHFrameSymbolPrivate;
+
+
+  /// 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;
+
+  /// CompactUnwindSection - If exception handling is supported by the target
+  /// and the target can support a compact representation of the CIE and FDE,
+  /// this is the section to emit them into.
+  const MCSection *CompactUnwindSection;
+
+  // 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;
+
+  // Extra TLS Variable Data section.  If the target needs to put additional
+  // information for a TLS variable, it'll go here.
+  const MCSection *TLSExtraDataSection;
+  
+  /// TLSDataSection - Section directive for Thread Local data.
+  /// ELF and MachO only.
+  const MCSection *TLSDataSection;        // Defaults to ".tdata".
+
+  /// TLSBSSSection - Section directive for Thread Local uninitialized data.
+  /// Null if this target doesn't support a BSS section.
+  /// ELF and MachO only.
+  const MCSection *TLSBSSSection;         // Defaults to ".tbss".
+
+
+  /// EHFrameSection - EH frame section. It is initialized on demand so it
+  /// can be overwritten (with uniquing).
+  const MCSection *EHFrameSection;
+
+  /// ELF specific sections.
+  ///
+  const MCSection *DataRelSection;
+  const MCSection *DataRelLocalSection;
+  const MCSection *DataRelROSection;
+  const MCSection *DataRelROLocalSection;
+  const MCSection *MergeableConst4Section;
+  const MCSection *MergeableConst8Section;
+  const MCSection *MergeableConst16Section;
+
+  /// MachO specific sections.
+  ///
+
+  /// TLSTLVSection - Section for thread local structure information.
+  /// Contains the source code name of the variable, visibility and a pointer
+  /// to the initial value (.tdata or .tbss).
+  const MCSection *TLSTLVSection;         // Defaults to ".tlv".
+  
+  /// TLSThreadInitSection - Section for thread local data initialization
+  /// functions.
+  const MCSection *TLSThreadInitSection;  // Defaults to ".thread_init_func".
+  
+  const MCSection *CStringSection;
+  const MCSection *UStringSection;
+  const MCSection *TextCoalSection;
+  const MCSection *ConstTextCoalSection;
+  const MCSection *ConstDataSection;
+  const MCSection *DataCoalSection;
+  const MCSection *DataCommonSection;
+  const MCSection *DataBSSSection;
+  const MCSection *FourByteConstantSection;
+  const MCSection *EightByteConstantSection;
+  const MCSection *SixteenByteConstantSection;
+  const MCSection *LazySymbolPointerSection;
+  const MCSection *NonLazySymbolPointerSection;
+
+  /// COFF specific sections.
+  ///
+  const MCSection *DrectveSection;
+  const MCSection *PDataSection;
+  const MCSection *XDataSection;
+  
+public:
+  void InitMCObjectFileInfo(StringRef TT, Reloc::Model RM, MCContext &ctx);
+  
+  bool isFunctionEHFrameSymbolPrivate() const {
+    return IsFunctionEHFrameSymbolPrivate;
+  }
+  bool getSupportsWeakOmittedEHFrame() const {
+    return SupportsWeakOmittedEHFrame;
+  }
+  bool getCommDirectiveSupportsAlignment() const {
+    return CommDirectiveSupportsAlignment;
+  }
+
+  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 *getCompactUnwindSection() const{
+    return CompactUnwindSection;
+  }
+  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;
+  }
+  const MCSection *getTLSExtraDataSection() const {
+    return TLSExtraDataSection;
+  }
+  const MCSection *getTLSDataSection() const { return TLSDataSection; }
+  const MCSection *getTLSBSSSection() const { return TLSBSSSection; }
+
+  /// ELF specific sections.
+  ///
+  const MCSection *getDataRelSection() const { return DataRelSection; }
+  const MCSection *getDataRelLocalSection() const {
+    return DataRelLocalSection;
+  }
+  const MCSection *getDataRelROSection() const { return DataRelROSection; }
+  const MCSection *getDataRelROLocalSection() const {
+    return DataRelROLocalSection;
+  }
+  const MCSection *getMergeableConst4Section() const {
+    return MergeableConst4Section;
+  }
+  const MCSection *getMergeableConst8Section() const {
+    return MergeableConst8Section;
+  }
+  const MCSection *getMergeableConst16Section() const {
+    return MergeableConst16Section;
+  }
+
+  /// MachO specific sections.
+  ///
+  const MCSection *getTLSTLVSection() const { return TLSTLVSection; }
+  const MCSection *getTLSThreadInitSection() const {
+    return TLSThreadInitSection;
+  }
+  const MCSection *getCStringSection() const { return CStringSection; }
+  const MCSection *getUStringSection() const { return UStringSection; }
+  const MCSection *getTextCoalSection() const { return TextCoalSection; }
+  const MCSection *getConstTextCoalSection() const {
+    return ConstTextCoalSection;
+  }
+  const MCSection *getConstDataSection() const { return ConstDataSection; }
+  const MCSection *getDataCoalSection() const { return DataCoalSection; }
+  const MCSection *getDataCommonSection() const { return DataCommonSection; }
+  const MCSection *getDataBSSSection() const { return DataBSSSection; }
+  const MCSection *getFourByteConstantSection() const {
+    return FourByteConstantSection;
+  }
+  const MCSection *getEightByteConstantSection() const {
+    return EightByteConstantSection;
+  }
+  const MCSection *getSixteenByteConstantSection() const {
+    return SixteenByteConstantSection;
+  }
+  const MCSection *getLazySymbolPointerSection() const {
+    return LazySymbolPointerSection;
+  }
+  const MCSection *getNonLazySymbolPointerSection() const {
+    return NonLazySymbolPointerSection;
+  }
+
+  /// COFF specific sections.
+  ///
+  const MCSection *getDrectveSection() const { return DrectveSection; }
+  const MCSection *getPDataSection() const { return PDataSection; }
+  const MCSection *getXDataSection() const { return XDataSection; }
+
+  const MCSection *getEHFrameSection() {
+    if (!EHFrameSection)
+      InitEHFrameSection();
+    return EHFrameSection;
+  }
+
+private:
+  enum Environment { IsMachO, IsELF, IsCOFF };
+  Environment Env;
+  Reloc::Model RelocM;
+  MCContext *Ctx;
+
+  void InitMachOMCObjectFileInfo(Triple T);
+  void InitELFMCObjectFileInfo(Triple T);
+  void InitCOFFMCObjectFileInfo(Triple T);
+
+  /// InitEHFrameSection - Initialize EHFrameSection on demand.
+  ///
+  void InitEHFrameSection();
+};
+
+} // end namespace llvm
+
+#endif
diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h
index a4006a8..38bbab4 100644
--- a/include/llvm/Target/TargetAsmInfo.h
+++ b/include/llvm/Target/TargetAsmInfo.h
@@ -15,11 +15,8 @@
 #define LLVM_TARGET_TARGETASMINFO_H
 
 #include "llvm/Target/TargetLoweringObjectFile.h"
-#include "llvm/Target/TargetRegisterInfo.h"
 
 namespace llvm {
-  template <typename T> class ArrayRef;
-  class MCSection;
   class TargetMachine;
   class TargetLoweringObjectFile;
 
@@ -29,37 +26,9 @@
 public:
   explicit TargetAsmInfo(const TargetMachine &TM);
 
-  const MCSection *getDwarfLineSection() const {
-    return TLOF->getDwarfLineSection();
-  }
-
-  const MCSection *getEHFrameSection() const {
-    return TLOF->getEHFrameSection();
-  }
-
-  const MCSection *getCompactUnwindSection() const {
-    return TLOF->getCompactUnwindSection();
-  }
-
-  const MCSection *getDwarfFrameSection() const {
-    return TLOF->getDwarfFrameSection();
-  }
-
-  const MCSection *getWin64EHFuncTableSection(StringRef Suffix) const {
-    return TLOF->getWin64EHFuncTableSection(Suffix);
-  }
-
-  const MCSection *getWin64EHTableSection(StringRef Suffix) const {
-    return TLOF->getWin64EHTableSection(Suffix);
-  }
-
   unsigned getFDEEncoding(bool CFI) const {
     return TLOF->getFDEEncoding(CFI);
   }
-
-  bool isFunctionEHFrameSymbolPrivate() const {
-    return TLOF->isFunctionEHFrameSymbolPrivate();
-  }
 };
 
 }
diff --git a/include/llvm/Target/TargetLoweringObjectFile.h b/include/llvm/Target/TargetLoweringObjectFile.h
index 2e1d6b9..d6428ff 100644
--- a/include/llvm/Target/TargetLoweringObjectFile.h
+++ b/include/llvm/Target/TargetLoweringObjectFile.h
@@ -16,6 +16,7 @@
 #define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
 
 #include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/SectionKind.h"
 
 namespace llvm {
@@ -31,137 +32,27 @@
   class GlobalValue;
   class TargetMachine;
   
-class TargetLoweringObjectFile {
+class TargetLoweringObjectFile : public MCObjectFileInfo {
   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;
-
-  /// CompactUnwindSection - If exception handling is supported by the target
-  /// and the target can support a compact representation of the CIE and FDE,
-  /// this is the section to emit them into.
-  const MCSection *CompactUnwindSection;
-  
-  // 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;
-  
-  // Extra TLS Variable Data section.  If the target needs to put additional
-  // information for a TLS variable, it'll go here.
-  const MCSection *TLSExtraDataSection;
-  
-  /// CommDirectiveSupportsAlignment - True if .comm supports alignment.  This
-  /// is a hack for as long as we support 10.4 Tiger, whose assembler doesn't
-  /// support alignment on comm.
-  bool CommDirectiveSupportsAlignment;
-  
-  /// SupportsWeakEmptyEHFrame - True if target object file supports a
-  /// weak_definition of constant 0 for an omitted EH frame.
-  bool SupportsWeakOmittedEHFrame;
-  
-  /// IsFunctionEHFrameSymbolPrivate - This flag is set to true if the
-  /// "EH_frame" symbol for EH information should be an assembler temporary (aka
-  /// private linkage, aka an L or .L label) or false if it should be a normal
-  /// non-.globl label.  This defaults to true.
-  bool IsFunctionEHFrameSymbolPrivate;
-
 public:
   MCContext &getContext() const { return *Ctx; }
+
+  TargetLoweringObjectFile() : MCObjectFileInfo(), Ctx(0) {}
   
   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;
-  }
+  virtual void Initialize(MCContext &ctx, const TargetMachine &TM);
   
-  bool isFunctionEHFrameSymbolPrivate() const {
-    return IsFunctionEHFrameSymbolPrivate;
-  }
-  bool getSupportsWeakOmittedEHFrame() const {
-    return SupportsWeakOmittedEHFrame;
-  }
-  bool getCommDirectiveSupportsAlignment() const {
-    return CommDirectiveSupportsAlignment;
-  }
-
-  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 *getCompactUnwindSection() const{return CompactUnwindSection;}
-  virtual const MCSection *getEHFrameSection() const = 0;
   virtual void emitPersonalityValue(MCStreamer &Streamer,
                                     const TargetMachine &TM,
                                     const MCSymbol *Sym) const;
-  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;
-  }
-  const MCSection *getTLSExtraDataSection() const {
-    return TLSExtraDataSection;
-  }
-  virtual const MCSection *getWin64EHFuncTableSection(StringRef suffix)const=0;
-  virtual const MCSection *getWin64EHTableSection(StringRef suffix) const = 0;
   
   /// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
   /// decide not to emit the UsedDirective for some symbols in llvm.used.
diff --git a/lib/CodeGen/AsmPrinter/ARMException.cpp b/lib/CodeGen/AsmPrinter/ARMException.cpp
index f8e4fa7..3f23873 100644
--- a/lib/CodeGen/AsmPrinter/ARMException.cpp
+++ b/lib/CodeGen/AsmPrinter/ARMException.cpp
@@ -26,7 +26,6 @@
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetFrameLowering.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/Target/TargetRegisterInfo.h"
diff --git a/lib/CodeGen/AsmPrinter/DwarfCFIException.cpp b/lib/CodeGen/AsmPrinter/DwarfCFIException.cpp
index d165be3..8ed4f4c 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCFIException.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCFIException.cpp
@@ -77,7 +77,8 @@
     // This is a temporary hack to keep sections in the same order they
     // were before. This lets us produce bit identical outputs while
     // transitioning to CFI.
-    Asm->OutStreamer.SwitchSection(TLOF.getEHFrameSection());
+    Asm->OutStreamer.SwitchSection(
+               const_cast<TargetLoweringObjectFile&>(TLOF).getEHFrameSection());
   }
 }
 
diff --git a/lib/CodeGen/ELFWriter.cpp b/lib/CodeGen/ELFWriter.cpp
index 41efe4e..1b8fb0a 100644
--- a/lib/CodeGen/ELFWriter.cpp
+++ b/lib/CodeGen/ELFWriter.cpp
@@ -67,6 +67,7 @@
 ELFWriter::ELFWriter(raw_ostream &o, TargetMachine &tm)
   : MachineFunctionPass(ID), O(o), TM(tm),
     OutContext(*new MCContext(*TM.getMCAsmInfo(), *TM.getRegisterInfo(),
+                              &TM.getTargetLowering()->getObjFileLowering(),
                               new TargetAsmInfo(tm))),
     TLOF(TM.getTargetLowering()->getObjFileLowering()),
     is64Bit(TM.getTargetData()->getPointerSizeInBits() == 64),
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index f368362..1a4a654 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -30,6 +30,7 @@
 #include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetRegistry.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 #include "llvm/Transforms/Scalar.h"
@@ -373,7 +374,9 @@
   // all the per-module stuff we're generating, including MCContext.
   TargetAsmInfo *TAI = new TargetAsmInfo(*this);
   MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(),
-                                                 *getRegisterInfo(), TAI);
+                                                 *getRegisterInfo(),
+                                     &getTargetLowering()->getObjFileLowering(),
+                                                 TAI);
   PM.add(MMI);
   OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref.
 
diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp
index 33a3c6e..c9f3ec3 100644
--- a/lib/CodeGen/MachineModuleInfo.cpp
+++ b/lib/CodeGen/MachineModuleInfo.cpp
@@ -17,9 +17,8 @@
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/Support/Dwarf.h"
@@ -255,8 +254,9 @@
 
 MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
                                      const MCRegisterInfo &MRI,
+                                     const MCObjectFileInfo *MOFI,
                                      const TargetAsmInfo *TAI)
-  : ImmutablePass(ID), Context(MAI, MRI, TAI),
+  : ImmutablePass(ID), Context(MAI, MRI, MOFI, TAI),
     ObjFileMMI(0), CompactUnwindEncoding(0), CurCallSite(0), CallsEHReturn(0),
     CallsUnwindInit(0), DbgInfoAvailable(false),
     CallsExternalVAFunctionWithFloatingPointArguments(false) {
@@ -268,7 +268,8 @@
 }
 
 MachineModuleInfo::MachineModuleInfo()
-  : ImmutablePass(ID), Context(*(MCAsmInfo*)0, *(MCRegisterInfo*)0, NULL) {
+  : ImmutablePass(ID),
+    Context(*(MCAsmInfo*)0, *(MCRegisterInfo*)0, (MCObjectFileInfo*)0, NULL) {
   assert(0 && "This MachineModuleInfo constructor should never be called, MMI "
          "should always be explicitly constructed by LLVMTargetMachine");
   abort();
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 7ec31b8..c6185d8 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -43,153 +43,6 @@
 //                                  ELF
 //===----------------------------------------------------------------------===//
 
-TargetLoweringObjectFileELF::TargetLoweringObjectFileELF()
-  : TargetLoweringObjectFile(),
-    TLSDataSection(0),
-    TLSBSSSection(0),
-    DataRelSection(0),
-    DataRelLocalSection(0),
-    DataRelROSection(0),
-    DataRelROLocalSection(0),
-    MergeableConst4Section(0),
-    MergeableConst8Section(0),
-    MergeableConst16Section(0) {
-}
-
-void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
-                                             const TargetMachine &TM) {
-  TargetLoweringObjectFile::Initialize(Ctx, TM);
-
-  BSSSection =
-    getContext().getELFSection(".bss", ELF::SHT_NOBITS,
-                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
-                               SectionKind::getBSS());
-
-  TextSection =
-    getContext().getELFSection(".text", ELF::SHT_PROGBITS,
-                               ELF::SHF_EXECINSTR |
-                               ELF::SHF_ALLOC,
-                               SectionKind::getText());
-
-  DataSection =
-    getContext().getELFSection(".data", ELF::SHT_PROGBITS,
-                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
-                               SectionKind::getDataRel());
-
-  ReadOnlySection =
-    getContext().getELFSection(".rodata", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC,
-                               SectionKind::getReadOnly());
-
-  TLSDataSection =
-    getContext().getELFSection(".tdata", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC | ELF::SHF_TLS |
-                               ELF::SHF_WRITE,
-                               SectionKind::getThreadData());
-
-  TLSBSSSection =
-    getContext().getELFSection(".tbss", ELF::SHT_NOBITS,
-                               ELF::SHF_ALLOC | ELF::SHF_TLS |
-                               ELF::SHF_WRITE,
-                               SectionKind::getThreadBSS());
-
-  DataRelSection =
-    getContext().getELFSection(".data.rel", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
-                               SectionKind::getDataRel());
-
-  DataRelLocalSection =
-    getContext().getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
-                               SectionKind::getDataRelLocal());
-
-  DataRelROSection =
-    getContext().getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
-                               SectionKind::getReadOnlyWithRel());
-
-  DataRelROLocalSection =
-    getContext().getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
-                               SectionKind::getReadOnlyWithRelLocal());
-
-  MergeableConst4Section =
-    getContext().getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_MERGE,
-                               SectionKind::getMergeableConst4());
-
-  MergeableConst8Section =
-    getContext().getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_MERGE,
-                               SectionKind::getMergeableConst8());
-
-  MergeableConst16Section =
-    getContext().getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_MERGE,
-                               SectionKind::getMergeableConst16());
-
-  StaticCtorSection =
-    getContext().getELFSection(".ctors", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
-                               SectionKind::getDataRel());
-
-  StaticDtorSection =
-    getContext().getELFSection(".dtors", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
-                               SectionKind::getDataRel());
-
-  // Exception Handling Sections.
-
-  // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
-  // it contains relocatable pointers.  In PIC mode, this is probably a big
-  // runtime hit for C++ apps.  Either the contents of the LSDA need to be
-  // adjusted or this should be a data section.
-  LSDASection =
-    getContext().getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
-                               ELF::SHF_ALLOC,
-                               SectionKind::getReadOnly());
-  // Debug Info Sections.
-  DwarfAbbrevSection =
-    getContext().getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfInfoSection =
-    getContext().getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfLineSection =
-    getContext().getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfFrameSection =
-    getContext().getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfPubNamesSection =
-    getContext().getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfPubTypesSection =
-    getContext().getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfStrSection =
-    getContext().getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfLocSection =
-    getContext().getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfARangesSection =
-    getContext().getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfRangesSection =
-    getContext().getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-  DwarfMacroInfoSection =
-    getContext().getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
-                               SectionKind::getMetadata());
-}
-
-const MCSection *TargetLoweringObjectFileELF::getEHFrameSection() const {
-  return getContext().getELFSection(".eh_frame", ELF::SHT_PROGBITS,
-                                    ELF::SHF_ALLOC,
-                                    SectionKind::getDataRel());
-}
-
 MCSymbol *
 TargetLoweringObjectFileELF::getCFIPersonalitySymbol(const GlobalValue *GV,
                                                      Mangler *Mang,
@@ -493,221 +346,6 @@
 //                                 MachO
 //===----------------------------------------------------------------------===//
 
-TargetLoweringObjectFileMachO::TargetLoweringObjectFileMachO()
-  : TargetLoweringObjectFile(),
-    TLSDataSection(0),
-    TLSBSSSection(0),
-    TLSTLVSection(0),
-    TLSThreadInitSection(0),
-    CStringSection(0),
-    UStringSection(0),
-    TextCoalSection(0),
-    ConstTextCoalSection(0),
-    ConstDataSection(0),
-    DataCoalSection(0),
-    DataCommonSection(0),
-    DataBSSSection(0),
-    FourByteConstantSection(0),
-    EightByteConstantSection(0),
-    SixteenByteConstantSection(0),
-    LazySymbolPointerSection(0),
-    NonLazySymbolPointerSection(0) {
-}
-
-void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
-                                               const TargetMachine &TM) {
-  IsFunctionEHFrameSymbolPrivate = false;
-  SupportsWeakOmittedEHFrame = false;
-
-  // .comm doesn't support alignment before Leopard.
-  Triple T(((LLVMTargetMachine&)TM).getTargetTriple());
-  if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
-    CommDirectiveSupportsAlignment = false;
-
-  TargetLoweringObjectFile::Initialize(Ctx, TM);
-
-  TextSection // .text
-    = getContext().getMachOSection("__TEXT", "__text",
-                                   MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
-                                   SectionKind::getText());
-  DataSection // .data
-    = getContext().getMachOSection("__DATA", "__data", 0,
-                                   SectionKind::getDataRel());
-
-  TLSDataSection // .tdata
-    = getContext().getMachOSection("__DATA", "__thread_data",
-                                   MCSectionMachO::S_THREAD_LOCAL_REGULAR,
-                                   SectionKind::getDataRel());
-  TLSBSSSection // .tbss
-    = getContext().getMachOSection("__DATA", "__thread_bss",
-                                   MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
-                                   SectionKind::getThreadBSS());
-
-  // TODO: Verify datarel below.
-  TLSTLVSection // .tlv
-    = getContext().getMachOSection("__DATA", "__thread_vars",
-                                   MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
-                                   SectionKind::getDataRel());
-
-  TLSThreadInitSection
-    = getContext().getMachOSection("__DATA", "__thread_init",
-                          MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
-                          SectionKind::getDataRel());
-
-  CStringSection // .cstring
-    = getContext().getMachOSection("__TEXT", "__cstring",
-                                   MCSectionMachO::S_CSTRING_LITERALS,
-                                   SectionKind::getMergeable1ByteCString());
-  UStringSection
-    = getContext().getMachOSection("__TEXT","__ustring", 0,
-                                   SectionKind::getMergeable2ByteCString());
-  FourByteConstantSection // .literal4
-    = getContext().getMachOSection("__TEXT", "__literal4",
-                                   MCSectionMachO::S_4BYTE_LITERALS,
-                                   SectionKind::getMergeableConst4());
-  EightByteConstantSection // .literal8
-    = getContext().getMachOSection("__TEXT", "__literal8",
-                                   MCSectionMachO::S_8BYTE_LITERALS,
-                                   SectionKind::getMergeableConst8());
-
-  // ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
-  // to using it in -static mode.
-  SixteenByteConstantSection = 0;
-  if (TM.getRelocationModel() != Reloc::Static &&
-      TM.getTargetData()->getPointerSizeInBits() == 32)
-    SixteenByteConstantSection =   // .literal16
-      getContext().getMachOSection("__TEXT", "__literal16",
-                                   MCSectionMachO::S_16BYTE_LITERALS,
-                                   SectionKind::getMergeableConst16());
-
-  ReadOnlySection  // .const
-    = getContext().getMachOSection("__TEXT", "__const", 0,
-                                   SectionKind::getReadOnly());
-
-  TextCoalSection
-    = getContext().getMachOSection("__TEXT", "__textcoal_nt",
-                                   MCSectionMachO::S_COALESCED |
-                                   MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
-                                   SectionKind::getText());
-  ConstTextCoalSection
-    = getContext().getMachOSection("__TEXT", "__const_coal",
-                                   MCSectionMachO::S_COALESCED,
-                                   SectionKind::getReadOnly());
-  ConstDataSection  // .const_data
-    = getContext().getMachOSection("__DATA", "__const", 0,
-                                   SectionKind::getReadOnlyWithRel());
-  DataCoalSection
-    = getContext().getMachOSection("__DATA","__datacoal_nt",
-                                   MCSectionMachO::S_COALESCED,
-                                   SectionKind::getDataRel());
-  DataCommonSection
-    = getContext().getMachOSection("__DATA","__common",
-                                   MCSectionMachO::S_ZEROFILL,
-                                   SectionKind::getBSS());
-  DataBSSSection
-    = getContext().getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
-                                   SectionKind::getBSS());
-
-
-  LazySymbolPointerSection
-    = getContext().getMachOSection("__DATA", "__la_symbol_ptr",
-                                   MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
-                                   SectionKind::getMetadata());
-  NonLazySymbolPointerSection
-    = getContext().getMachOSection("__DATA", "__nl_symbol_ptr",
-                                   MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
-                                   SectionKind::getMetadata());
-
-  if (TM.getRelocationModel() == Reloc::Static) {
-    StaticCtorSection
-      = getContext().getMachOSection("__TEXT", "__constructor", 0,
-                                     SectionKind::getDataRel());
-    StaticDtorSection
-      = getContext().getMachOSection("__TEXT", "__destructor", 0,
-                                     SectionKind::getDataRel());
-  } else {
-    StaticCtorSection
-      = getContext().getMachOSection("__DATA", "__mod_init_func",
-                                     MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
-                                     SectionKind::getDataRel());
-    StaticDtorSection
-      = getContext().getMachOSection("__DATA", "__mod_term_func",
-                                     MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
-                                     SectionKind::getDataRel());
-  }
-
-  // Exception Handling.
-  LSDASection = getContext().getMachOSection("__TEXT", "__gcc_except_tab", 0,
-                                             SectionKind::getReadOnlyWithRel());
-
-  if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
-    CompactUnwindSection =
-      getContext().getMachOSection("__LD", "__compact_unwind",
-                                   MCSectionMachO::S_ATTR_DEBUG,
-                                   SectionKind::getReadOnly());
-
-  // Debug Information.
-  DwarfAbbrevSection =
-    getContext().getMachOSection("__DWARF", "__debug_abbrev",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfInfoSection =
-    getContext().getMachOSection("__DWARF", "__debug_info",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfLineSection =
-    getContext().getMachOSection("__DWARF", "__debug_line",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfFrameSection =
-    getContext().getMachOSection("__DWARF", "__debug_frame",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfPubNamesSection =
-    getContext().getMachOSection("__DWARF", "__debug_pubnames",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfPubTypesSection =
-    getContext().getMachOSection("__DWARF", "__debug_pubtypes",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfStrSection =
-    getContext().getMachOSection("__DWARF", "__debug_str",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfLocSection =
-    getContext().getMachOSection("__DWARF", "__debug_loc",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfARangesSection =
-    getContext().getMachOSection("__DWARF", "__debug_aranges",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfRangesSection =
-    getContext().getMachOSection("__DWARF", "__debug_ranges",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfMacroInfoSection =
-    getContext().getMachOSection("__DWARF", "__debug_macinfo",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-  DwarfDebugInlineSection =
-    getContext().getMachOSection("__DWARF", "__debug_inlined",
-                                 MCSectionMachO::S_ATTR_DEBUG,
-                                 SectionKind::getMetadata());
-
-  TLSExtraDataSection = TLSTLVSection;
-}
-
-const MCSection *TargetLoweringObjectFileMachO::getEHFrameSection() const {
-  return getContext().getMachOSection("__TEXT", "__eh_frame",
-                                      MCSectionMachO::S_COALESCED |
-                                      MCSectionMachO::S_ATTR_NO_TOC |
-                                      MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
-                                      MCSectionMachO::S_ATTR_LIVE_SUPPORT,
-                                      SectionKind::getReadOnly());
-}
-
 const MCSection *TargetLoweringObjectFileMachO::
 getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
                          Mangler *Mang, const TargetMachine &TM) const {
@@ -925,163 +563,6 @@
 //                                  COFF
 //===----------------------------------------------------------------------===//
 
-TargetLoweringObjectFileCOFF::TargetLoweringObjectFileCOFF()
-  : TargetLoweringObjectFile(),
-    DrectveSection(0),
-    PDataSection(0),
-    XDataSection(0) {
-}
-
-void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
-                                              const TargetMachine &TM) {
-  TargetLoweringObjectFile::Initialize(Ctx, TM);
-  TextSection =
-    getContext().getCOFFSection(".text",
-                                COFF::IMAGE_SCN_CNT_CODE |
-                                COFF::IMAGE_SCN_MEM_EXECUTE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getText());
-  DataSection =
-    getContext().getCOFFSection(".data",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ |
-                                COFF::IMAGE_SCN_MEM_WRITE,
-                                SectionKind::getDataRel());
-  ReadOnlySection =
-    getContext().getCOFFSection(".rdata",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getReadOnly());
-  StaticCtorSection =
-    getContext().getCOFFSection(".ctors",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ |
-                                COFF::IMAGE_SCN_MEM_WRITE,
-                                SectionKind::getDataRel());
-  StaticDtorSection =
-    getContext().getCOFFSection(".dtors",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ |
-                                COFF::IMAGE_SCN_MEM_WRITE,
-                                SectionKind::getDataRel());
-
-  // FIXME: We're emitting LSDA info into a readonly section on COFF, even
-  // though it contains relocatable pointers.  In PIC mode, this is probably a
-  // big runtime hit for C++ apps.  Either the contents of the LSDA need to be
-  // adjusted or this should be a data section.
-  LSDASection =
-    getContext().getCOFFSection(".gcc_except_table",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getReadOnly());
-  // Debug info.
-  DwarfAbbrevSection =
-    getContext().getCOFFSection(".debug_abbrev",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfInfoSection =
-    getContext().getCOFFSection(".debug_info",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfLineSection =
-    getContext().getCOFFSection(".debug_line",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfFrameSection =
-    getContext().getCOFFSection(".debug_frame",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfPubNamesSection =
-    getContext().getCOFFSection(".debug_pubnames",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfPubTypesSection =
-    getContext().getCOFFSection(".debug_pubtypes",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfStrSection =
-    getContext().getCOFFSection(".debug_str",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfLocSection =
-    getContext().getCOFFSection(".debug_loc",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfARangesSection =
-    getContext().getCOFFSection(".debug_aranges",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfRangesSection =
-    getContext().getCOFFSection(".debug_ranges",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-  DwarfMacroInfoSection =
-    getContext().getCOFFSection(".debug_macinfo",
-                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                COFF::IMAGE_SCN_MEM_READ,
-                                SectionKind::getMetadata());
-
-  DrectveSection =
-    getContext().getCOFFSection(".drectve",
-                                COFF::IMAGE_SCN_LNK_INFO,
-                                SectionKind::getMetadata());
-
-  PDataSection =
-    getContext().getCOFFSection(".pdata",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ |
-                                COFF::IMAGE_SCN_MEM_WRITE,
-                                SectionKind::getDataRel());
-
-  XDataSection =
-    getContext().getCOFFSection(".xdata",
-                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                COFF::IMAGE_SCN_MEM_READ |
-                                COFF::IMAGE_SCN_MEM_WRITE,
-                                SectionKind::getDataRel());
-}
-
-const MCSection *TargetLoweringObjectFileCOFF::getEHFrameSection() const {
-  return getContext().getCOFFSection(".eh_frame",
-                                     COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                     COFF::IMAGE_SCN_MEM_READ |
-                                     COFF::IMAGE_SCN_MEM_WRITE,
-                                     SectionKind::getDataRel());
-}
-
-const MCSection *TargetLoweringObjectFileCOFF::getWin64EHFuncTableSection(
-                                                       StringRef suffix) const {
-  if (suffix == "")
-    return PDataSection;
-  return getContext().getCOFFSection((".pdata"+suffix).str(),
-                                     COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                     COFF::IMAGE_SCN_MEM_READ |
-                                     COFF::IMAGE_SCN_MEM_WRITE,
-                                     SectionKind::getDataRel());
-}
-
-const MCSection *TargetLoweringObjectFileCOFF::getWin64EHTableSection(
-                                                       StringRef suffix) const {
-  if (suffix == "")
-    return XDataSection;
-  return getContext().getCOFFSection((".xdata"+suffix).str(),
-                                     COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                     COFF::IMAGE_SCN_MEM_READ |
-                                     COFF::IMAGE_SCN_MEM_WRITE,
-                                     SectionKind::getDataRel());
-}
-
-
 static unsigned
 getCOFFSectionFlags(SectionKind K) {
   unsigned Flags = 0;
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index e5f8ac9..802f19c 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -16,6 +16,7 @@
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSectionCOFF.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/ADT/OwningPtr.h"
@@ -995,6 +996,19 @@
   EmitEOL();
 }
 
+static const MCSection *getWin64EHTableSection(StringRef suffix,
+                                               MCContext &context) {
+  // FIXME: This doesn't belong in MCObjectFileInfo. However,
+  /// this duplicate code in MCWin64EH.cpp.
+  if (suffix == "")
+    return context.getObjectFileInfo()->getXDataSection();
+  return context.getCOFFSection((".xdata"+suffix).str(),
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
+                                SectionKind::getDataRel());
+}
+
 void MCAsmStreamer::EmitWin64EHHandlerData() {
   MCStreamer::EmitWin64EHHandlerData();
 
@@ -1004,8 +1018,7 @@
   // data block is visible.
   MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
   StringRef suffix=MCWin64EHUnwindEmitter::GetSectionSuffix(CurFrame->Function);
-  const MCSection *xdataSect =
-    getContext().getTargetAsmInfo().getWin64EHTableSection(suffix);
+  const MCSection *xdataSect = getWin64EHTableSection(suffix, getContext());
   if (xdataSect)
     SwitchSectionNoChange(xdataSect);
 
diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index 21e1489..3ba5416 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -9,6 +9,7 @@
 
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCSectionELF.h"
@@ -28,8 +29,8 @@
 
 
 MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri,
-                     const TargetAsmInfo *tai) :
-  MAI(mai), MRI(mri), TAI(tai),
+                     const MCObjectFileInfo *mofi, const TargetAsmInfo *tai) :
+  MAI(mai), MRI(mri), MOFI(mofi), TAI(tai),
   Allocator(), Symbols(Allocator), UsedNames(Allocator),
   NextUniqueID(0),
   CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0),
diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index 2004bae..4242bf1 100644
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -75,7 +75,7 @@
   assert(tai && "Unable to create target assembler!");
 
   // Set up the MCContext for creating symbols and MCExpr's.
-  MCContext *Ctx = new MCContext(*MAI, *MRI, tai);
+  MCContext *Ctx = new MCContext(*MAI, *MRI, 0, tai);
   assert(Ctx && "Unable to create MCContext!");
 
   // Set up disassembler.
diff --git a/lib/MC/MCDisassembler/EDDisassembler.cpp b/lib/MC/MCDisassembler/EDDisassembler.cpp
index cae5416..048f7e5 100644
--- a/lib/MC/MCDisassembler/EDDisassembler.cpp
+++ b/lib/MC/MCDisassembler/EDDisassembler.cpp
@@ -377,7 +377,7 @@
   SourceMgr sourceMgr;
   sourceMgr.setDiagHandler(diag_handler, static_cast<void*>(this));
   sourceMgr.AddNewSourceBuffer(buf, SMLoc()); // ownership of buf handed over
-  MCContext context(*AsmInfo, *MRI, NULL);
+  MCContext context(*AsmInfo, *MRI, NULL, NULL);
   OwningPtr<MCStreamer> streamer(createNullStreamer(context));
   OwningPtr<MCAsmParser> genericParser(createMCAsmParser(*Tgt, sourceMgr,
                                                          context, *streamer,
diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index 744d016..9db7518 100644
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -7,13 +7,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCObjectWriter.h"
+#include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCObjectWriter.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
@@ -196,7 +198,7 @@
   MCOS->EmitLabel(SectionEnd);
 
   // Switch back the the dwarf line section.
-  MCOS->SwitchSection(context.getTargetAsmInfo().getDwarfLineSection());
+  MCOS->SwitchSection(context.getObjectFileInfo()->getDwarfLineSection());
 
   const MCAsmInfo &asmInfo = MCOS->getContext().getAsmInfo();
   MCOS->EmitDwarfAdvanceLineAddr(INT64_MAX, LastLabel, SectionEnd,
@@ -209,7 +211,7 @@
 void MCDwarfFileTable::Emit(MCStreamer *MCOS) {
   MCContext &context = MCOS->getContext();
   // Switch to the section where the table will be emitted into.
-  MCOS->SwitchSection(context.getTargetAsmInfo().getDwarfLineSection());
+  MCOS->SwitchSection(context.getObjectFileInfo()->getDwarfLineSection());
 
   // Create a symbol at the beginning of this section.
   MCSymbol *LineStartSym = context.CreateTempSymbol();
@@ -688,6 +690,7 @@
 bool FrameEmitterImpl::EmitCompactUnwind(MCStreamer &Streamer,
                                          const MCDwarfFrameInfo &Frame) {
   MCContext &Context = Streamer.getContext();
+  const MCObjectFileInfo *MOFI = Context.getObjectFileInfo();
   const TargetAsmInfo &TAI = Context.getTargetAsmInfo();
   bool VerboseAsm = Streamer.isVerboseAsm();
 
@@ -720,7 +723,7 @@
   if (Frame.Lsda)
     Encoding |= 0x40000000;
 
-  Streamer.SwitchSection(TAI.getCompactUnwindSection());
+  Streamer.SwitchSection(MOFI->getCompactUnwindSection());
 
   // Range Start
   unsigned FDEEncoding = TAI.getFDEEncoding(UsingCFI);
@@ -767,11 +770,12 @@
                                           unsigned lsdaEncoding) {
   MCContext &context = streamer.getContext();
   const MCRegisterInfo &MRI = context.getRegisterInfo();
+  const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
   const TargetAsmInfo &TAI = context.getTargetAsmInfo();
   bool verboseAsm = streamer.isVerboseAsm();
 
   MCSymbol *sectionStart;
-  if (TAI.isFunctionEHFrameSymbolPrivate() || !IsEH)
+  if (MOFI->isFunctionEHFrameSymbolPrivate() || !IsEH)
     sectionStart = context.CreateTempSymbol();
   else
     sectionStart = context.GetOrCreateSymbol(Twine("EH_frame") + Twine(CIENum));
@@ -890,10 +894,11 @@
   MCContext &context = streamer.getContext();
   MCSymbol *fdeStart = context.CreateTempSymbol();
   MCSymbol *fdeEnd = context.CreateTempSymbol();
+  const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
   const TargetAsmInfo &TAI = context.getTargetAsmInfo();
   bool verboseAsm = streamer.isVerboseAsm();
 
-  if (!TAI.isFunctionEHFrameSymbolPrivate() && IsEH) {
+  if (!MOFI->isFunctionEHFrameSymbolPrivate() && IsEH) {
     MCSymbol *EHSym =
       context.GetOrCreateSymbol(frame.Function->getName() + Twine(".eh"));
     streamer.EmitEHSymAttributes(frame.Function, EHSym);
@@ -1008,9 +1013,10 @@
                                bool UsingCFI,
                                bool IsEH) {
   MCContext &Context = Streamer.getContext();
-  const TargetAsmInfo &TAI = Context.getTargetAsmInfo();
-  const MCSection &Section = IsEH ? *TAI.getEHFrameSection() :
-                                    *TAI.getDwarfFrameSection();
+  MCObjectFileInfo *MOFI =
+    const_cast<MCObjectFileInfo*>(Context.getObjectFileInfo());
+  const MCSection &Section = IsEH ? *MOFI->getEHFrameSection() :
+                                    *MOFI->getDwarfFrameSection();
   Streamer.SwitchSection(&Section);
   MCSymbol *SectionStart = Context.CreateTempSymbol();
   Streamer.EmitLabel(SectionStart);
@@ -1022,7 +1028,8 @@
   const MCSymbol *DummyDebugKey = NULL;
   for (unsigned i = 0, n = Streamer.getNumFrameInfos(); i < n; ++i) {
     const MCDwarfFrameInfo &Frame = Streamer.getFrameInfo(i);
-    if (IsEH && TAI.getCompactUnwindSection() && Frame.CompactUnwindEncoding &&
+    if (IsEH && MOFI->getCompactUnwindSection() &&
+        Frame.CompactUnwindEncoding &&
         Emitter.EmitCompactUnwind(Streamer, Frame)) {
       FDEEnd = NULL;
       continue;
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
new file mode 100644
index 0000000..cdf225a
--- /dev/null
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -0,0 +1,500 @@
+//===-- MObjectFileInfo.cpp - Object File Information ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCSectionCOFF.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/ADT/Triple.h"
+using namespace llvm;
+
+void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
+  // MachO
+  IsFunctionEHFrameSymbolPrivate = false;
+  SupportsWeakOmittedEHFrame = false;
+
+  // .comm doesn't support alignment before Leopard.
+  if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
+    CommDirectiveSupportsAlignment = false;
+
+  TextSection // .text
+    = Ctx->getMachOSection("__TEXT", "__text",
+                           MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+                           SectionKind::getText());
+  DataSection // .data
+    = Ctx->getMachOSection("__DATA", "__data", 0,
+                           SectionKind::getDataRel());
+
+  TLSDataSection // .tdata
+    = Ctx->getMachOSection("__DATA", "__thread_data",
+                           MCSectionMachO::S_THREAD_LOCAL_REGULAR,
+                           SectionKind::getDataRel());
+  TLSBSSSection // .tbss
+    = Ctx->getMachOSection("__DATA", "__thread_bss",
+                           MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
+                           SectionKind::getThreadBSS());
+
+  // TODO: Verify datarel below.
+  TLSTLVSection // .tlv
+    = Ctx->getMachOSection("__DATA", "__thread_vars",
+                           MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
+                           SectionKind::getDataRel());
+
+  TLSThreadInitSection
+    = Ctx->getMachOSection("__DATA", "__thread_init",
+                           MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
+                           SectionKind::getDataRel());
+
+  CStringSection // .cstring
+    = Ctx->getMachOSection("__TEXT", "__cstring",
+                           MCSectionMachO::S_CSTRING_LITERALS,
+                           SectionKind::getMergeable1ByteCString());
+  UStringSection
+    = Ctx->getMachOSection("__TEXT","__ustring", 0,
+                           SectionKind::getMergeable2ByteCString());
+  FourByteConstantSection // .literal4
+    = Ctx->getMachOSection("__TEXT", "__literal4",
+                           MCSectionMachO::S_4BYTE_LITERALS,
+                           SectionKind::getMergeableConst4());
+  EightByteConstantSection // .literal8
+    = Ctx->getMachOSection("__TEXT", "__literal8",
+                           MCSectionMachO::S_8BYTE_LITERALS,
+                           SectionKind::getMergeableConst8());
+
+  // ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
+  // to using it in -static mode.
+  SixteenByteConstantSection = 0;
+  if (RelocM != Reloc::Static &&
+      T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64)
+    SixteenByteConstantSection =   // .literal16
+      Ctx->getMachOSection("__TEXT", "__literal16",
+                           MCSectionMachO::S_16BYTE_LITERALS,
+                           SectionKind::getMergeableConst16());
+
+  ReadOnlySection  // .const
+    = Ctx->getMachOSection("__TEXT", "__const", 0,
+                           SectionKind::getReadOnly());
+
+  TextCoalSection
+    = Ctx->getMachOSection("__TEXT", "__textcoal_nt",
+                           MCSectionMachO::S_COALESCED |
+                           MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+                           SectionKind::getText());
+  ConstTextCoalSection
+    = Ctx->getMachOSection("__TEXT", "__const_coal",
+                           MCSectionMachO::S_COALESCED,
+                           SectionKind::getReadOnly());
+  ConstDataSection  // .const_data
+    = Ctx->getMachOSection("__DATA", "__const", 0,
+                           SectionKind::getReadOnlyWithRel());
+  DataCoalSection
+    = Ctx->getMachOSection("__DATA","__datacoal_nt",
+                           MCSectionMachO::S_COALESCED,
+                           SectionKind::getDataRel());
+  DataCommonSection
+    = Ctx->getMachOSection("__DATA","__common",
+                           MCSectionMachO::S_ZEROFILL,
+                           SectionKind::getBSS());
+  DataBSSSection
+    = Ctx->getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
+                           SectionKind::getBSS());
+
+
+  LazySymbolPointerSection
+    = Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
+                           MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
+                           SectionKind::getMetadata());
+  NonLazySymbolPointerSection
+    = Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
+                           MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
+                           SectionKind::getMetadata());
+
+  if (RelocM == Reloc::Static) {
+    StaticCtorSection
+      = Ctx->getMachOSection("__TEXT", "__constructor", 0,
+                             SectionKind::getDataRel());
+    StaticDtorSection
+      = Ctx->getMachOSection("__TEXT", "__destructor", 0,
+                             SectionKind::getDataRel());
+  } else {
+    StaticCtorSection
+      = Ctx->getMachOSection("__DATA", "__mod_init_func",
+                             MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
+                             SectionKind::getDataRel());
+    StaticDtorSection
+      = Ctx->getMachOSection("__DATA", "__mod_term_func",
+                             MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
+                             SectionKind::getDataRel());
+  }
+
+  // Exception Handling.
+  LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
+                                     SectionKind::getReadOnlyWithRel());
+
+  if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
+    CompactUnwindSection =
+      Ctx->getMachOSection("__LD", "__compact_unwind",
+                           MCSectionMachO::S_ATTR_DEBUG,
+                           SectionKind::getReadOnly());
+
+  // Debug Information.
+  DwarfAbbrevSection =
+    Ctx->getMachOSection("__DWARF", "__debug_abbrev",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfInfoSection =
+    Ctx->getMachOSection("__DWARF", "__debug_info",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfLineSection =
+    Ctx->getMachOSection("__DWARF", "__debug_line",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfFrameSection =
+    Ctx->getMachOSection("__DWARF", "__debug_frame",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfPubNamesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_pubnames",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfPubTypesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfStrSection =
+    Ctx->getMachOSection("__DWARF", "__debug_str",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfLocSection =
+    Ctx->getMachOSection("__DWARF", "__debug_loc",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfARangesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_aranges",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfRangesSection =
+    Ctx->getMachOSection("__DWARF", "__debug_ranges",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfMacroInfoSection =
+    Ctx->getMachOSection("__DWARF", "__debug_macinfo",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+  DwarfDebugInlineSection =
+    Ctx->getMachOSection("__DWARF", "__debug_inlined",
+                         MCSectionMachO::S_ATTR_DEBUG,
+                         SectionKind::getMetadata());
+
+  TLSExtraDataSection = TLSTLVSection;
+}
+
+void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
+  // ELF
+  BSSSection =
+    Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
+                       ELF::SHF_WRITE |ELF::SHF_ALLOC,
+                       SectionKind::getBSS());
+
+  TextSection =
+    Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
+                       ELF::SHF_EXECINSTR |
+                       ELF::SHF_ALLOC,
+                       SectionKind::getText());
+
+  DataSection =
+    Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
+                       ELF::SHF_WRITE |ELF::SHF_ALLOC,
+                       SectionKind::getDataRel());
+
+  ReadOnlySection =
+    Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC,
+                       SectionKind::getReadOnly());
+
+  TLSDataSection =
+    Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC | ELF::SHF_TLS |
+                       ELF::SHF_WRITE,
+                       SectionKind::getThreadData());
+
+  TLSBSSSection =
+    Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
+                       ELF::SHF_ALLOC | ELF::SHF_TLS |
+                       ELF::SHF_WRITE,
+                       SectionKind::getThreadBSS());
+
+  DataRelSection =
+    Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_WRITE,
+                       SectionKind::getDataRel());
+
+  DataRelLocalSection =
+    Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_WRITE,
+                       SectionKind::getDataRelLocal());
+
+  DataRelROSection =
+    Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_WRITE,
+                       SectionKind::getReadOnlyWithRel());
+
+  DataRelROLocalSection =
+    Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_WRITE,
+                       SectionKind::getReadOnlyWithRelLocal());
+
+  MergeableConst4Section =
+    Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_MERGE,
+                       SectionKind::getMergeableConst4());
+
+  MergeableConst8Section =
+    Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_MERGE,
+                       SectionKind::getMergeableConst8());
+
+  MergeableConst16Section =
+    Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_MERGE,
+                       SectionKind::getMergeableConst16());
+
+  StaticCtorSection =
+    Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_WRITE,
+                       SectionKind::getDataRel());
+
+  StaticDtorSection =
+    Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC |ELF::SHF_WRITE,
+                       SectionKind::getDataRel());
+
+  // Exception Handling Sections.
+
+  // FIXME: We're emitting LSDA info into a readonly section on ELF, even though
+  // it contains relocatable pointers.  In PIC mode, this is probably a big
+  // runtime hit for C++ apps.  Either the contents of the LSDA need to be
+  // adjusted or this should be a data section.
+  LSDASection =
+    Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC,
+                       SectionKind::getReadOnly());
+
+  // Debug Info Sections.
+  DwarfAbbrevSection =
+    Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfInfoSection =
+    Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfLineSection =
+    Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfFrameSection =
+    Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfPubNamesSection =
+    Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfPubTypesSection =
+    Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfStrSection =
+    Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfLocSection =
+    Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfARangesSection =
+    Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfRangesSection =
+    Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+  DwarfMacroInfoSection =
+    Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
+                       SectionKind::getMetadata());
+}
+
+
+void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
+  // COFF
+  TextSection =
+    Ctx->getCOFFSection(".text",
+                        COFF::IMAGE_SCN_CNT_CODE |
+                        COFF::IMAGE_SCN_MEM_EXECUTE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getText());
+  DataSection =
+    Ctx->getCOFFSection(".data",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getDataRel());
+  ReadOnlySection =
+    Ctx->getCOFFSection(".rdata",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getReadOnly());
+  StaticCtorSection =
+    Ctx->getCOFFSection(".ctors",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getDataRel());
+  StaticDtorSection =
+    Ctx->getCOFFSection(".dtors",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getDataRel());
+
+  // FIXME: We're emitting LSDA info into a readonly section on COFF, even
+  // though it contains relocatable pointers.  In PIC mode, this is probably a
+  // big runtime hit for C++ apps.  Either the contents of the LSDA need to be
+  // adjusted or this should be a data section.
+  LSDASection =
+    Ctx->getCOFFSection(".gcc_except_table",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getReadOnly());
+
+  // Debug info.
+  DwarfAbbrevSection =
+    Ctx->getCOFFSection(".debug_abbrev",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfInfoSection =
+    Ctx->getCOFFSection(".debug_info",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfLineSection =
+    Ctx->getCOFFSection(".debug_line",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfFrameSection =
+    Ctx->getCOFFSection(".debug_frame",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfPubNamesSection =
+    Ctx->getCOFFSection(".debug_pubnames",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfPubTypesSection =
+    Ctx->getCOFFSection(".debug_pubtypes",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfStrSection =
+    Ctx->getCOFFSection(".debug_str",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfLocSection =
+    Ctx->getCOFFSection(".debug_loc",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfARangesSection =
+    Ctx->getCOFFSection(".debug_aranges",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfRangesSection =
+    Ctx->getCOFFSection(".debug_ranges",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+  DwarfMacroInfoSection =
+    Ctx->getCOFFSection(".debug_macinfo",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+
+  DrectveSection =
+    Ctx->getCOFFSection(".drectve",
+                        COFF::IMAGE_SCN_LNK_INFO,
+                        SectionKind::getMetadata());
+
+  PDataSection =
+    Ctx->getCOFFSection(".pdata",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getDataRel());
+
+  XDataSection =
+    Ctx->getCOFFSection(".xdata",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ |
+                        COFF::IMAGE_SCN_MEM_WRITE,
+                        SectionKind::getDataRel());
+}
+
+void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
+                                            MCContext &ctx) {
+  RelocM = relocm;
+  Ctx = &ctx;
+
+  // Common.
+  CommDirectiveSupportsAlignment = true;
+  SupportsWeakOmittedEHFrame = true;
+  IsFunctionEHFrameSymbolPrivate = true;
+
+  Triple T(TT);
+  Triple::ArchType Arch = T.getArch();
+  // FIXME: Checking for Arch here to filter out bogus triples such as
+  // cellspu-apple-darwin. Perhaps we should fix in Triple?
+  if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
+       Arch == Triple::arm || Arch == Triple::thumb ||
+       Arch == Triple::ppc || Arch == Triple::ppc64 ||
+       Arch == Triple::UnknownArch) &&
+      (T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) {
+    Env = IsMachO;
+    InitMachOMCObjectFileInfo(T);
+  } else if (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin ||
+             T.getOS() == Triple::Win32) {
+    Env = IsCOFF;
+    InitCOFFMCObjectFileInfo(T);
+  } else {
+    Env = IsELF;
+    InitELFMCObjectFileInfo(T);
+  }
+}
+
+void MCObjectFileInfo::InitEHFrameSection() {
+  if (Env == IsMachO)
+    EHFrameSection =
+      Ctx->getMachOSection("__TEXT", "__eh_frame",
+                           MCSectionMachO::S_COALESCED |
+                           MCSectionMachO::S_ATTR_NO_TOC |
+                           MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
+                           MCSectionMachO::S_ATTR_LIVE_SUPPORT,
+                           SectionKind::getReadOnly());
+  else if (Env == IsELF)
+    EHFrameSection =
+      Ctx->getELFSection(".eh_frame", ELF::SHT_PROGBITS,
+                         ELF::SHF_ALLOC,
+                         SectionKind::getDataRel());
+  else
+    EHFrameSection =
+      Ctx->getCOFFSection(".eh_frame",
+                          COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                          COFF::IMAGE_SCN_MEM_READ |
+                          COFF::IMAGE_SCN_MEM_WRITE,
+                          SectionKind::getDataRel());
+}
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 055d94c..2cf376e 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -23,6 +23,7 @@
 #include "llvm/MC/MCParser/AsmLexer.h"
 #include "llvm/MC/MCParser/MCAsmParser.h"
 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
diff --git a/lib/MC/MCWin64EH.cpp b/lib/MC/MCWin64EH.cpp
index e698384..79e66fc 100644
--- a/lib/MC/MCWin64EH.cpp
+++ b/lib/MC/MCWin64EH.cpp
@@ -10,10 +10,11 @@
 #include "llvm/MC/MCWin64EH.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/MC/MCSectionCOFF.h"
 #include "llvm/MC/MCExpr.h"
-#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/ADT/Twine.h"
 
 namespace llvm {
 
@@ -220,14 +221,36 @@
   return "";
 }
 
+static const MCSection *getWin64EHTableSection(StringRef suffix,
+                                               MCContext &context) {
+  if (suffix == "")
+    return context.getObjectFileInfo()->getXDataSection();
+
+  return context.getCOFFSection((".xdata"+suffix).str(),
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
+                                SectionKind::getDataRel());
+}
+
+static const MCSection *getWin64EHFuncTableSection(StringRef suffix,
+                                                   MCContext &context) {
+  if (suffix == "")
+    return context.getObjectFileInfo()->getPDataSection();
+  return context.getCOFFSection((".pdata"+suffix).str(),
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
+                                SectionKind::getDataRel());
+}
+
 void MCWin64EHUnwindEmitter::EmitUnwindInfo(MCStreamer &streamer,
                                             MCWin64EHUnwindInfo *info) {
   // Switch sections (the static function above is meant to be called from
   // here and from Emit().
   MCContext &context = streamer.getContext();
-  const TargetAsmInfo &TAI = context.getTargetAsmInfo();
   const MCSection *xdataSect =
-    TAI.getWin64EHTableSection(GetSectionSuffix(info->Function));
+    getWin64EHTableSection(GetSectionSuffix(info->Function), context);
   streamer.SwitchSection(xdataSect);
 
   llvm::EmitUnwindInfo(streamer, info);
@@ -236,11 +259,10 @@
 void MCWin64EHUnwindEmitter::Emit(MCStreamer &streamer) {
   MCContext &context = streamer.getContext();
   // Emit the unwind info structs first.
-  const TargetAsmInfo &TAI = context.getTargetAsmInfo();
   for (unsigned i = 0; i < streamer.getNumW64UnwindInfos(); ++i) {
     MCWin64EHUnwindInfo &info = streamer.getW64UnwindInfo(i);
     const MCSection *xdataSect =
-      TAI.getWin64EHTableSection(GetSectionSuffix(info.Function));
+      getWin64EHTableSection(GetSectionSuffix(info.Function), context);
     streamer.SwitchSection(xdataSect);
     llvm::EmitUnwindInfo(streamer, &info);
   }
@@ -248,7 +270,7 @@
   for (unsigned i = 0; i < streamer.getNumW64UnwindInfos(); ++i) {
     MCWin64EHUnwindInfo &info = streamer.getW64UnwindInfo(i);
     const MCSection *pdataSect =
-      TAI.getWin64EHFuncTableSection(GetSectionSuffix(info.Function));
+      getWin64EHFuncTableSection(GetSectionSuffix(info.Function), context);
     streamer.SwitchSection(pdataSect);
     EmitRuntimeFunction(streamer, &info);
   }
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 6d6bee2..09bcf02 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -155,4 +155,3 @@
   TargetRegistry::RegisterMCCodeGenInfo(TheARMTarget, createARMMCCodeGenInfo);
   TargetRegistry::RegisterMCCodeGenInfo(TheThumbTarget, createARMMCCodeGenInfo);
 }
-
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 4ff8f84..b772947 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -37,6 +37,7 @@
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCSymbol.h"
@@ -92,6 +93,7 @@
     const Module *TheModule;
     const MCAsmInfo* TAsm;
     const MCRegisterInfo *MRI;
+    const MCObjectFileInfo *MOFI;
     MCContext *TCtx;
     const TargetData* TD;
     
@@ -111,8 +113,8 @@
     static char ID;
     explicit CWriter(formatted_raw_ostream &o)
       : FunctionPass(ID), Out(o), IL(0), Mang(0), LI(0),
-        TheModule(0), TAsm(0), MRI(0), TCtx(0), TD(0), OpaqueCounter(0),
-        NextAnonValueNumber(0) {
+        TheModule(0), TAsm(0), MRI(0), MOFI(0), TCtx(0), TD(0),
+        OpaqueCounter(0), NextAnonValueNumber(0) {
       initializeLoopInfoPass(*PassRegistry::getPassRegistry());
       FPCounter = 0;
     }
@@ -152,6 +154,7 @@
       delete TCtx;
       delete TAsm;
       delete MRI;
+      delete MOFI;
       FPConstantMap.clear();
       ByValParams.clear();
       intrinsicPrototypesAlreadyGenerated.clear();
@@ -1673,7 +1676,7 @@
 #endif
   TAsm = new CBEMCAsmInfo();
   MRI  = new MCRegisterInfo();
-  TCtx = new MCContext(*TAsm, *MRI, NULL);
+  TCtx = new MCContext(*TAsm, *MRI, NULL, NULL);
   Mang = new Mangler(*TCtx, *TD);
 
   // Keep track of which functions are static ctors/dtors so they can have
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index 20f8744..2fb744f 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -35,34 +35,15 @@
 //                              Generic Code
 //===----------------------------------------------------------------------===//
 
-TargetLoweringObjectFile::TargetLoweringObjectFile() :
-  Ctx(0),
-  TextSection(0),
-  DataSection(0),
-  BSSSection(0),
-  ReadOnlySection(0),
-  StaticCtorSection(0),
-  StaticDtorSection(0),
-  LSDASection(0),
-  CompactUnwindSection(0),
-  DwarfAbbrevSection(0),
-  DwarfInfoSection(0),
-  DwarfLineSection(0),
-  DwarfFrameSection(0),
-  DwarfPubNamesSection(0),
-  DwarfPubTypesSection(0),
-  DwarfDebugInlineSection(0),
-  DwarfStrSection(0),
-  DwarfLocSection(0),
-  DwarfARangesSection(0),
-  DwarfRangesSection(0),
-  DwarfMacroInfoSection(0),
-  TLSExtraDataSection(0),
-  CommDirectiveSupportsAlignment(true),
-  SupportsWeakOmittedEHFrame(true), 
-  IsFunctionEHFrameSymbolPrivate(true) {
+/// 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.
+void TargetLoweringObjectFile::Initialize(MCContext &ctx,
+                                          const TargetMachine &TM) {
+  Ctx = &ctx;
+  InitMCObjectFileInfo(TM.getTargetTriple(), TM.getRelocationModel(), *Ctx);
 }
-
+  
 TargetLoweringObjectFile::~TargetLoweringObjectFile() {
 }
 
diff --git a/test/CodeGen/PowerPC/2009-08-23-linkerprivate.ll b/test/CodeGen/PowerPC/2009-08-23-linkerprivate.ll
index 0bde2d5..ae2acd4 100644
--- a/test/CodeGen/PowerPC/2009-08-23-linkerprivate.ll
+++ b/test/CodeGen/PowerPC/2009-08-23-linkerprivate.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -march=ppc32 -mtriple=ppc-apple-darwin | FileCheck %s
+; RUN: llc < %s -march=ppc32 -mtriple=powerpc-apple-darwin | FileCheck %s
 
 ; ModuleID = '/Volumes/MacOS9/tests/WebKit/JavaScriptCore/profiler/ProfilerServer.mm'
 
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index e2de055..d930aea 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -18,6 +18,8 @@
 #include "llvm/MC/MCCodeEmitter.h"
 #include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSubtargetInfo.h"
@@ -346,7 +348,12 @@
   }
 
   const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
-  MCContext Ctx(*MAI, *MRI, tai);
+  // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and
+  // MCObjectFileInfo needs a MCContext reference in order to initialize itself.
+  OwningPtr<MCObjectFileInfo> MOFI(new MCObjectFileInfo());
+  MCContext Ctx(*MAI, *MRI, MOFI.get(), tai);
+  MOFI->InitMCObjectFileInfo(TripleName, RelocModel, Ctx);
+
   if (SaveTempLabels)
     Ctx.setAllowTemporaryLabels(false);
 
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index 28cfa9c..2f02847 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -314,7 +314,7 @@
 
   // mark which symbols can not be internalized 
   MCContext Context(*_target->getMCAsmInfo(), *_target->getRegisterInfo(),
-                    NULL);
+                    NULL, NULL);
   Mangler mangler(Context, *_target->getTargetData());
   std::vector<const char*> mustPreserveList;
   SmallPtrSet<GlobalValue*, 8> asmUsed;
diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index 0ca96bc..661674c 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -665,7 +665,7 @@
 bool LTOModule::ParseSymbols() {
   // Use mangler to add GlobalPrefix to names to match linker names.
   MCContext Context(*_target->getMCAsmInfo(), *_target->getRegisterInfo(),
-                    NULL);
+                    NULL, NULL);
   Mangler mangler(Context, *_target->getTargetData());
 
   // add functions