Moved from include/llvm/CodeGen to lib/CodeGen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34027 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 0 insertions, 851 deletions

diff --git a/include/llvm/CodeGen/ELFWriter.h b/include/llvm/CodeGen/ELFWriter.h
deleted file mode 100644
index 7eb5ca3fea..0000000000
--- a/include/llvm/CodeGen/ELFWriter.h
+++ /dev/null
@@ -1,227 +0,0 @@
-//===-- ELFWriter.h - Target-independent ELF writer support -----*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file was developed by Chris Lattner and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the ELFWriter class.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CODEGEN_ELFWRITER_H
-#define LLVM_CODEGEN_ELFWRITER_H
-
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include <list>
-
-namespace llvm {
-  class GlobalVariable;
-  class Mangler;
-  class MachineCodeEmitter;
-  class ELFCodeEmitter;
-
-  /// ELFWriter - This class implements the common target-independent code for
-  /// writing ELF files.  Targets should derive a class from this to
-  /// parameterize the output format.
-  ///
-  class ELFWriter : public MachineFunctionPass {
-    friend class ELFCodeEmitter;
-  public:
-    MachineCodeEmitter &getMachineCodeEmitter() const {
-      return *(MachineCodeEmitter*)MCE;
-    }
-
-    ~ELFWriter();
-
-    typedef std::vector<unsigned char> DataBuffer;
-
-  protected:
-    ELFWriter(std::ostream &O, TargetMachine &TM);
-
-    /// Output stream to send the resultant object file to.
-    ///
-    std::ostream &O;
-
-    /// Target machine description.
-    ///
-    TargetMachine &TM;
-
-    /// Mang - The object used to perform name mangling for this module.
-    ///
-    Mangler *Mang;
-
-    /// MCE - The MachineCodeEmitter object that we are exposing to emit machine
-    /// code for functions to the .o file.
-    ELFCodeEmitter *MCE;
-
-    //===------------------------------------------------------------------===//
-    // Properties to be set by the derived class ctor, used to configure the
-    // ELFWriter.
-
-    // e_machine - This field is the target specific value to emit as the
-    // e_machine member of the ELF header.
-    unsigned short e_machine;
-
-    // e_flags - The machine flags for the target.  This defaults to zero.
-    unsigned e_flags;
-
-    //===------------------------------------------------------------------===//
-    // Properties inferred automatically from the target machine.
-    //
-
-    /// is64Bit/isLittleEndian - This information is inferred from the target
-    /// machine directly, indicating whether to emit a 32- or 64-bit ELF file.
-    bool is64Bit, isLittleEndian;
-
-    /// doInitialization - Emit the file header and all of the global variables
-    /// for the module to the ELF file.
-    bool doInitialization(Module &M);
-
-    bool runOnMachineFunction(MachineFunction &MF);
-
-
-    /// doFinalization - Now that the module has been completely processed, emit
-    /// the ELF file to 'O'.
-    bool doFinalization(Module &M);
-
-  private:
-    // The buffer we accumulate the file header into.  Note that this should be
-    // changed into something much more efficient later (and the bytecode writer
-    // as well!).
-    DataBuffer FileHeader;
-
-    /// ELFSection - This struct contains information about each section that is
-    /// emitted to the file.  This is eventually turned into the section header
-    /// table at the end of the file.
-    struct ELFSection {
-      std::string Name;       // Name of the section.
-      unsigned NameIdx;       // Index in .shstrtab of name, once emitted.
-      unsigned Type;
-      unsigned Flags;
-      uint64_t Addr;
-      unsigned Offset;
-      unsigned Size;
-      unsigned Link;
-      unsigned Info;
-      unsigned Align;
-      unsigned EntSize;
-
-      /// SectionIdx - The number of the section in the Section Table.
-      ///
-      unsigned short SectionIdx;
-
-      /// SectionData - The actual data for this section which we are building
-      /// up for emission to the file.
-      DataBuffer SectionData;
-
-      enum { SHT_NULL = 0, SHT_PROGBITS = 1, SHT_SYMTAB = 2, SHT_STRTAB = 3,
-             SHT_RELA = 4, SHT_HASH = 5, SHT_DYNAMIC = 6, SHT_NOTE = 7,
-             SHT_NOBITS = 8, SHT_REL = 9, SHT_SHLIB = 10, SHT_DYNSYM = 11 };
-      enum { SHN_UNDEF = 0, SHN_ABS = 0xFFF1, SHN_COMMON = 0xFFF2 };
-      enum {   // SHF - ELF Section Header Flags
-        SHF_WRITE            = 1 << 0, // Writable
-        SHF_ALLOC            = 1 << 1, // Mapped into the process addr space
-        SHF_EXECINSTR        = 1 << 2, // Executable
-        SHF_MERGE            = 1 << 4, // Might be merged if equal
-        SHF_STRINGS          = 1 << 5, // Contains null-terminated strings
-        SHF_INFO_LINK        = 1 << 6, // 'sh_info' contains SHT index
-        SHF_LINK_ORDER       = 1 << 7, // Preserve order after combining
-        SHF_OS_NONCONFORMING = 1 << 8, // nonstandard OS support required
-        SHF_GROUP            = 1 << 9, // Section is a member of a group
-        SHF_TLS              = 1 << 10 // Section holds thread-local data
-      };
-
-      ELFSection(const std::string &name)
-        : Name(name), Type(0), Flags(0), Addr(0), Offset(0), Size(0),
-          Link(0), Info(0), Align(0), EntSize(0) {
-      }
-    };
-
-    /// SectionList - This is the list of sections that we have emitted to the
-    /// file.  Once the file has been completely built, the section header table
-    /// is constructed from this info.
-    std::list<ELFSection> SectionList;
-    unsigned NumSections;   // Always = SectionList.size()
-
-    /// SectionLookup - This is a mapping from section name to section number in
-    /// the SectionList.
-    std::map<std::string, ELFSection*> SectionLookup;
-
-    /// getSection - Return the section with the specified name, creating a new
-    /// section if one does not already exist.
-    ELFSection &getSection(const std::string &Name,
-                           unsigned Type, unsigned Flags = 0) {
-      ELFSection *&SN = SectionLookup[Name];
-      if (SN) return *SN;
-
-      SectionList.push_back(Name);
-      SN = &SectionList.back();
-      SN->SectionIdx = NumSections++;
-      SN->Type = Type;
-      SN->Flags = Flags;
-      return *SN;
-    }
-
-    ELFSection &getDataSection() {
-      return getSection(".data", ELFSection::SHT_PROGBITS,
-                        ELFSection::SHF_WRITE | ELFSection::SHF_ALLOC);
-    }
-    ELFSection &getBSSSection() {
-      return getSection(".bss", ELFSection::SHT_NOBITS,
-                        ELFSection::SHF_WRITE | ELFSection::SHF_ALLOC);
-    }
-
-    /// ELFSym - This struct contains information about each symbol that is
-    /// added to logical symbol table for the module.  This is eventually
-    /// turned into a real symbol table in the file.
-    struct ELFSym {
-      const GlobalValue *GV;    // The global value this corresponds to.
-      unsigned NameIdx;         // Index in .strtab of name, once emitted.
-      uint64_t Value;
-      unsigned Size;
-      unsigned char Info;
-      unsigned char Other;
-      unsigned short SectionIdx;
-
-      enum { STB_LOCAL = 0, STB_GLOBAL = 1, STB_WEAK = 2 };
-      enum { STT_NOTYPE = 0, STT_OBJECT = 1, STT_FUNC = 2, STT_SECTION = 3,
-             STT_FILE = 4 };
-      ELFSym(const GlobalValue *gv) : GV(gv), Value(0), Size(0), Info(0),
-                                      Other(0), SectionIdx(0) {}
-
-      void SetBind(unsigned X) {
-        assert(X == (X & 0xF) && "Bind value out of range!");
-        Info = (Info & 0x0F) | (X << 4);
-      }
-      void SetType(unsigned X) {
-        assert(X == (X & 0xF) && "Type value out of range!");
-        Info = (Info & 0xF0) | X;
-      }
-    };
-
-    /// SymbolTable - This is the list of symbols we have emitted to the file.
-    /// This actually gets rearranged before emission to the file (to put the
-    /// local symbols first in the list).
-    std::vector<ELFSym> SymbolTable;
-
-    // As we complete the ELF file, we need to update fields in the ELF header
-    // (e.g. the location of the section table).  These members keep track of
-    // the offset in ELFHeader of these various pieces to update and other
-    // locations in the file.
-    unsigned ELFHeader_e_shoff_Offset;     // e_shoff    in ELF header.
-    unsigned ELFHeader_e_shstrndx_Offset;  // e_shstrndx in ELF header.
-    unsigned ELFHeader_e_shnum_Offset;     // e_shnum    in ELF header.
-  private:
-    void EmitGlobal(GlobalVariable *GV);
-
-    void EmitSymbolTable();
-
-    void EmitSectionTableStringTable();
-    void OutputSectionsAndSectionTable();
-  };
-}
-
-#endif
diff --git a/include/llvm/CodeGen/MachOWriter.h b/include/llvm/CodeGen/MachOWriter.h
deleted file mode 100644
index bff94b4b2f..0000000000
--- a/include/llvm/CodeGen/MachOWriter.h
+++ /dev/null
@@ -1,624 +0,0 @@
-//=== MachOWriter.h - Target-independent Mach-O writer support --*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file was developed by Nate Begeman and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the MachOWriter class.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CODEGEN_MACHOWRITER_H
-#define LLVM_CODEGEN_MACHOWRITER_H
-
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineRelocation.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetMachOWriterInfo.h"
-
-namespace llvm {
-  class GlobalVariable;
-  class Mangler;
-  class MachineCodeEmitter;
-  class MachOCodeEmitter;
-  class OutputBuffer;
-
-  /// MachOSym - This struct contains information about each symbol that is
-  /// added to logical symbol table for the module.  This is eventually
-  /// turned into a real symbol table in the file.
-  struct MachOSym {
-    const GlobalValue *GV;    // The global value this corresponds to.
-    std::string GVName;       // The mangled name of the global value.
-    uint32_t    n_strx;       // index into the string table
-    uint8_t     n_type;       // type flag
-    uint8_t     n_sect;       // section number or NO_SECT
-    int16_t     n_desc;       // see <mach-o/stab.h>
-    uint64_t    n_value;      // value for this symbol (or stab offset)
-    
-    // Constants for the n_sect field
-    // see <mach-o/nlist.h>
-    enum { NO_SECT = 0 };   // symbol is not in any section
-
-    // Constants for the n_type field
-    // see <mach-o/nlist.h>
-    enum { N_UNDF  = 0x0,  // undefined, n_sect == NO_SECT
-           N_ABS   = 0x2,  // absolute, n_sect == NO_SECT
-           N_SECT  = 0xe,  // defined in section number n_sect
-           N_PBUD  = 0xc,  // prebound undefined (defined in a dylib)
-           N_INDR  = 0xa   // indirect
-    };
-    // The following bits are OR'd into the types above. For example, a type
-    // of 0x0f would be an external N_SECT symbol (0x0e | 0x01).
-    enum { N_EXT  = 0x01,   // external symbol bit
-           N_PEXT = 0x10    // private external symbol bit
-    };
-    
-    // Constants for the n_desc field
-    // see <mach-o/loader.h>
-    enum { REFERENCE_FLAG_UNDEFINED_NON_LAZY          = 0,
-           REFERENCE_FLAG_UNDEFINED_LAZY              = 1,
-           REFERENCE_FLAG_DEFINED                     = 2,
-           REFERENCE_FLAG_PRIVATE_DEFINED             = 3,
-           REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY  = 4,
-           REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY      = 5
-    };
-    enum { N_NO_DEAD_STRIP = 0x0020, // symbol is not to be dead stripped
-           N_WEAK_REF      = 0x0040, // symbol is weak referenced
-           N_WEAK_DEF      = 0x0080  // coalesced symbol is a weak definition
-    };
-    
-    MachOSym(const GlobalValue *gv, std::string name, uint8_t sect,
-             TargetMachine &TM);
-  };
-      
-  /// MachOWriter - This class implements the common target-independent code for
-  /// writing Mach-O files.  Targets should derive a class from this to
-  /// parameterize the output format.
-  ///
-  class MachOWriter : public MachineFunctionPass {
-    friend class MachOCodeEmitter;
-  public:
-    MachineCodeEmitter &getMachineCodeEmitter() const {
-      return *(MachineCodeEmitter*)MCE;
-    }
-    virtual ~MachOWriter();
-
-    virtual const char *getPassName() const {
-      return "Mach-O Writer";
-    }
-
-    typedef std::vector<unsigned char> DataBuffer;
-  protected:
-    MachOWriter(std::ostream &O, TargetMachine &TM);
-
-    /// Output stream to send the resultant object file to.
-    ///
-    std::ostream &O;
-
-    /// Target machine description.
-    ///
-    TargetMachine &TM;
-
-    /// Mang - The object used to perform name mangling for this module.
-    ///
-    Mangler *Mang;
-    
-    /// MCE - The MachineCodeEmitter object that we are exposing to emit machine
-    /// code for functions to the .o file.
-    MachOCodeEmitter *MCE;
-
-    /// is64Bit/isLittleEndian - This information is inferred from the target
-    /// machine directly, indicating what header values and flags to set.
-    bool is64Bit, isLittleEndian;
-
-    /// doInitialization - Emit the file header and all of the global variables
-    /// for the module to the Mach-O file.
-    bool doInitialization(Module &M);
-
-    bool runOnMachineFunction(MachineFunction &MF);
-
-    /// doFinalization - Now that the module has been completely processed, emit
-    /// the Mach-O file to 'O'.
-    bool doFinalization(Module &M);
-
-    /// MachOHeader - This struct contains the header information about a
-    /// specific architecture type/subtype pair that is emitted to the file.
-    struct MachOHeader {
-      uint32_t  magic;      // mach magic number identifier
-      uint32_t  filetype;   // type of file
-      uint32_t  ncmds;      // number of load commands
-      uint32_t  sizeofcmds; // the size of all the load commands
-      uint32_t  flags;      // flags
-      uint32_t  reserved;   // 64-bit only
-      
-      /// HeaderData - The actual data for the header which we are building
-      /// up for emission to the file.
-      DataBuffer HeaderData;
-
-      // Constants for the filetype field
-      // see <mach-o/loader.h> for additional info on the various types
-      enum { MH_OBJECT     = 1, // relocatable object file
-             MH_EXECUTE    = 2, // demand paged executable file
-             MH_FVMLIB     = 3, // fixed VM shared library file
-             MH_CORE       = 4, // core file
-             MH_PRELOAD    = 5, // preloaded executable file
-             MH_DYLIB      = 6, // dynamically bound shared library
-             MH_DYLINKER   = 7, // dynamic link editor
-             MH_BUNDLE     = 8, // dynamically bound bundle file
-             MH_DYLIB_STUB = 9, // shared library stub for static linking only
-             MH_DSYM       = 10 // companion file wiht only debug sections
-      };
-      
-      // Constants for the flags field
-      enum { MH_NOUNDEFS                = 1 << 0,
-                // the object file has no undefined references
-             MH_INCRLINK                = 1 << 1,
-                // the object file is the output of an incremental link against
-                // a base file and cannot be link edited again
-             MH_DYLDLINK                = 1 << 2,
-                // the object file is input for the dynamic linker and cannot be
-                // statically link edited again.
-             MH_BINDATLOAD              = 1 << 3,
-                // the object file's undefined references are bound by the
-                // dynamic linker when loaded.
-             MH_PREBOUND                = 1 << 4,
-                // the file has its dynamic undefined references prebound
-             MH_SPLIT_SEGS              = 1 << 5,
-                // the file has its read-only and read-write segments split
-                // see <mach/shared_memory_server.h>
-             MH_LAZY_INIT               = 1 << 6,
-                // the shared library init routine is to be run lazily via
-                // catching memory faults to its writable segments (obsolete)
-             MH_TWOLEVEL                = 1 << 7,
-                // the image is using two-level namespace bindings
-             MH_FORCE_FLAT              = 1 << 8,
-                // the executable is forcing all images to use flat namespace
-                // bindings.
-             MH_NOMULTIDEFS             = 1 << 8,
-                // this umbrella guarantees no multiple definitions of symbols
-                // in its sub-images so the two-level namespace hints can
-                // always be used.
-             MH_NOFIXPREBINDING         = 1 << 10,
-                // do not have dyld notify the prebidning agent about this
-                // executable.
-             MH_PREBINDABLE             = 1 << 11,
-                // the binary is not prebound but can have its prebinding
-                // redone.  only used when MH_PREBOUND is not set.
-             MH_ALLMODSBOUND            = 1 << 12,
-                // indicates that this binary binds to all two-level namespace
-                // modules of its dependent libraries.  Only used when
-                // MH_PREBINDABLE and MH_TWOLEVEL are both set.
-             MH_SUBSECTIONS_VIA_SYMBOLS = 1 << 13,
-                // safe to divide up the sections into sub-sections via symbols
-                // for dead code stripping.
-             MH_CANONICAL               = 1 << 14,
-                // the binary has been canonicalized via the unprebind operation
-             MH_WEAK_DEFINES            = 1 << 15,
-                // the final linked image contains external weak symbols
-             MH_BINDS_TO_WEAK           = 1 << 16,
-                // the final linked image uses weak symbols
-             MH_ALLOW_STACK_EXECUTION   = 1 << 17
-                // When this bit is set, all stacks in the task will be given
-                // stack execution privilege.  Only used in MH_EXECUTE filetype
-      };
-
-      MachOHeader() : magic(0), filetype(0), ncmds(0), sizeofcmds(0), flags(0),
-                      reserved(0) { }
-      
-      /// cmdSize - This routine returns the size of the MachOSection as written
-      /// to disk, depending on whether the destination is a 64 bit Mach-O file.
-      unsigned cmdSize(bool is64Bit) const {
-        if (is64Bit)
-          return 8 * sizeof(uint32_t);
-        else
-          return 7 * sizeof(uint32_t);
-      }
-
-      /// setMagic - This routine sets the appropriate value for the 'magic'
-      /// field based on pointer size and endianness.
-      void setMagic(bool isLittleEndian, bool is64Bit) {
-        if (isLittleEndian)
-          if (is64Bit) magic = 0xcffaedfe;
-          else         magic = 0xcefaedfe;
-        else
-          if (is64Bit) magic = 0xfeedfacf;
-          else         magic = 0xfeedface;
-      }
-    };
-    
-    /// Header - An instance of MachOHeader that we will update while we build
-    /// the file, and then emit during finalization.
-    MachOHeader Header;
-    
-    /// MachOSegment - This struct contains the necessary information to
-    /// emit the load commands for each section in the file.
-    struct MachOSegment {
-      uint32_t    cmd;      // LC_SEGMENT or LC_SEGMENT_64
-      uint32_t    cmdsize;  // Total size of this struct and section commands
-      std::string segname;  // segment name
-      uint64_t    vmaddr;   // address of this segment
-      uint64_t    vmsize;   // size of this segment, may be larger than filesize
-      uint64_t    fileoff;  // offset in file
-      uint64_t    filesize; // amount to read from file
-      uint32_t    maxprot;  // maximum VM protection
-      uint32_t    initprot; // initial VM protection
-      uint32_t    nsects;   // number of sections in this segment
-      uint32_t    flags;    // flags
-      
-      // The following constants are getting pulled in by one of the
-      // system headers, which creates a neat clash with the enum.
-#if !defined(VM_PROT_NONE)
-#define VM_PROT_NONE		0x00
-#endif
-#if !defined(VM_PROT_READ)
-#define VM_PROT_READ		0x01
-#endif
-#if !defined(VM_PROT_WRITE)
-#define VM_PROT_WRITE		0x02
-#endif
-#if !defined(VM_PROT_EXECUTE)
-#define VM_PROT_EXECUTE		0x04
-#endif
-#if !defined(VM_PROT_ALL)
-#define VM_PROT_ALL		0x07
-#endif
-
-      // Constants for the vm protection fields
-      // see <mach-o/vm_prot.h>
-      enum { SEG_VM_PROT_NONE     = VM_PROT_NONE, 
-             SEG_VM_PROT_READ     = VM_PROT_READ, // read permission
-             SEG_VM_PROT_WRITE    = VM_PROT_WRITE, // write permission
-             SEG_VM_PROT_EXECUTE  = VM_PROT_EXECUTE,
-             SEG_VM_PROT_ALL      = VM_PROT_ALL
-      };
-      
-      // Constants for the cmd field
-      // see <mach-o/loader.h>
-      enum { LC_SEGMENT    = 0x01,  // segment of this file to be mapped
-             LC_SEGMENT_64 = 0x19   // 64-bit segment of this file to be mapped
-      };
-      
-      /// cmdSize - This routine returns the size of the MachOSection as written
-      /// to disk, depending on whether the destination is a 64 bit Mach-O file.
-      unsigned cmdSize(bool is64Bit) const {
-        if (is64Bit)
-          return 6 * sizeof(uint32_t) + 4 * sizeof(uint64_t) + 16;
-        else
-          return 10 * sizeof(uint32_t) + 16;  // addresses only 32 bits
-      }
-
-      MachOSegment(const std::string &seg, bool is64Bit)
-        : cmd(is64Bit ? LC_SEGMENT_64 : LC_SEGMENT), cmdsize(0), segname(seg),
-          vmaddr(0), vmsize(0), fileoff(0), filesize(0), maxprot(VM_PROT_ALL),
-          initprot(VM_PROT_ALL), nsects(0), flags(0) { }
-    };
-
-    /// MachOSection - This struct contains information about each section in a 
-    /// particular segment that is emitted to the file.  This is eventually
-    /// turned into the SectionCommand in the load command for a particlar
-    /// segment.
-    struct MachOSection { 
-      std::string  sectname; // name of this section, 
-      std::string  segname;  // segment this section goes in
-      uint64_t  addr;        // memory address of this section
-      uint64_t  size;        // size in bytes of this section
-      uint32_t  offset;      // file offset of this section
-      uint32_t  align;       // section alignment (power of 2)
-      uint32_t  reloff;      // file offset of relocation entries
-      uint32_t  nreloc;      // number of relocation entries
-      uint32_t  flags;       // flags (section type and attributes)
-      uint32_t  reserved1;   // reserved (for offset or index)
-      uint32_t  reserved2;   // reserved (for count or sizeof)
-      uint32_t  reserved3;   // reserved (64 bit only)
-      
-      /// A unique number for this section, which will be used to match symbols
-      /// to the correct section.
-      uint32_t Index;
-      
-      /// SectionData - The actual data for this section which we are building
-      /// up for emission to the file.
-      DataBuffer SectionData;
-
-      /// RelocBuffer - A buffer to hold the mach-o relocations before we write
-      /// them out at the appropriate location in the file.
-      DataBuffer RelocBuffer;
-      
-      /// Relocations - The relocations that we have encountered so far in this 
-      /// section that we will need to convert to MachORelocation entries when
-      /// the file is written.
-      std::vector<MachineRelocation> Relocations;
-      
-      // Constants for the section types (low 8 bits of flags field)
-      // see <mach-o/loader.h>
-      enum { S_REGULAR = 0,
-                // regular section
-             S_ZEROFILL = 1,
-                // zero fill on demand section
-             S_CSTRING_LITERALS = 2,
-                // section with only literal C strings
-             S_4BYTE_LITERALS = 3,
-                // section with only 4 byte literals
-             S_8BYTE_LITERALS = 4,
-                // section with only 8 byte literals
-             S_LITERAL_POINTERS = 5, 
-                // section with only pointers to literals
-             S_NON_LAZY_SYMBOL_POINTERS = 6,
-                // section with only non-lazy symbol pointers
-             S_LAZY_SYMBOL_POINTERS = 7,
-                // section with only lazy symbol pointers
-             S_SYMBOL_STUBS = 8,
-                // section with only symbol stubs
-                // byte size of stub in the reserved2 field
-             S_MOD_INIT_FUNC_POINTERS = 9,
-                // section with only function pointers for initialization
-             S_MOD_TERM_FUNC_POINTERS = 10,
-                // section with only function pointers for termination
-             S_COALESCED = 11,
-                // section contains symbols that are coalesced
-             S_GB_ZEROFILL = 12,
-                // zero fill on demand section (that can be larger than 4GB)
-             S_INTERPOSING = 13,
-                // section with only pairs of function pointers for interposing
-             S_16BYTE_LITERALS = 14
-                // section with only 16 byte literals
-      };
-      
-      // Constants for the section flags (high 24 bits of flags field)
-      // see <mach-o/loader.h>
-      enum { S_ATTR_PURE_INSTRUCTIONS   = 1 << 31,
-                // section contains only true machine instructions
-             S_ATTR_NO_TOC              = 1 << 30,
-                // section contains coalesced symbols that are not to be in a 
-                // ranlib table of contents
-             S_ATTR_STRIP_STATIC_SYMS   = 1 << 29,
-                // ok to strip static symbols in this section in files with the
-                // MY_DYLDLINK flag
-             S_ATTR_NO_DEAD_STRIP       = 1 << 28,
-                // no dead stripping
-             S_ATTR_LIVE_SUPPORT        = 1 << 27,
-                // blocks are live if they reference live blocks
-             S_ATTR_SELF_MODIFYING_CODE = 1 << 26,
-                // used with i386 code stubs written on by dyld
-             S_ATTR_DEBUG               = 1 << 25,
-                // a debug section
-             S_ATTR_SOME_INSTRUCTIONS   = 1 << 10,
-                // section contains some machine instructions
-             S_ATTR_EXT_RELOC           = 1 << 9,
-                // section has external relocation entries
-             S_ATTR_LOC_RELOC           = 1 << 8
-                // section has local relocation entries
-      };
-
-      /// cmdSize - This routine returns the size of the MachOSection as written
-      /// to disk, depending on whether the destination is a 64 bit Mach-O file.
-      unsigned cmdSize(bool is64Bit) const {
-        if (is64Bit)
-          return 7 * sizeof(uint32_t) + 2 * sizeof(uint64_t) + 32;
-        else
-          return 9 * sizeof(uint32_t) + 32;  // addresses only 32 bits
-      }
-
-      MachOSection(const std::string &seg, const std::string &sect)
-        : sectname(sect), segname(seg), addr(0), size(0), offset(0), align(2),
-          reloff(0), nreloc(0), flags(0), reserved1(0), reserved2(0),
-          reserved3(0) { }
-    };
-
-  private:
-
-    /// SectionList - This is the list of sections that we have emitted to the
-    /// file.  Once the file has been completely built, the segment load command
-    /// SectionCommands are constructed from this info.
-    std::vector<MachOSection*> SectionList;
-
-    /// SectionLookup - This is a mapping from section name to SectionList entry
-    std::map<std::string, MachOSection*> SectionLookup;
-    
-    /// GVSection - This is a mapping from a GlobalValue to a MachOSection,
-    /// to aid in emitting relocations.
-    std::map<GlobalValue*, MachOSection*> GVSection;
-
-    /// GVOffset - This is a mapping from a GlobalValue to an offset from the 
-    /// start of the section in which the GV resides, to aid in emitting
-    /// relocations.
-    std::map<GlobalValue*, intptr_t> GVOffset;
-
-    /// getSection - Return the section with the specified name, creating a new
-    /// section if one does not already exist.
-    MachOSection *getSection(const std::string &seg, const std::string &sect,
-                             unsigned Flags = 0) {
-      MachOSection *MOS = SectionLookup[seg+sect];
-      if (MOS) return MOS;
-
-      MOS = new MachOSection(seg, sect);
-      SectionList.push_back(MOS);
-      MOS->Index = SectionList.size();
-      MOS->flags = MachOSection::S_REGULAR | Flags;
-      SectionLookup[seg+sect] = MOS;
-      return MOS;
-    }
-    MachOSection *getTextSection(bool isCode = true) {
-      if (isCode)
-        return getSection("__TEXT", "__text", 
-                          MachOSection::S_ATTR_PURE_INSTRUCTIONS |
-                          MachOSection::S_ATTR_SOME_INSTRUCTIONS);
-      else
-        return getSection("__TEXT", "__text");
-    }
-    MachOSection *getBSSSection() {
-      return getSection("__DATA", "__bss", MachOSection::S_ZEROFILL);
-    }
-    MachOSection *getDataSection() {
-      return getSection("__DATA", "__data");
-    }
-    MachOSection *getConstSection(Constant *C) {
-      const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
-      if (CVA && CVA->isCString())
-        return getSection("__TEXT", "__cstring", 
-                          MachOSection::S_CSTRING_LITERALS);
-      
-      const Type *Ty = C->getType();
-      if (Ty->isPrimitiveType() || Ty->isInteger()) {
-        unsigned Size = TM.getTargetData()->getTypeSize(Ty);
-        switch(Size) {
-        default: break; // Fall through to __TEXT,__const
-        case 4:
-          return getSection("__TEXT", "__literal4",
-                            MachOSection::S_4BYTE_LITERALS);
-        case 8:
-          return getSection("__TEXT", "__literal8",
-                            MachOSection::S_8BYTE_LITERALS);
-        case 16:
-          return getSection("__TEXT", "__literal16",
-                            MachOSection::S_16BYTE_LITERALS);
-        }
-      }
-      return getSection("__TEXT", "__const");
-    }
-    MachOSection *getJumpTableSection() {
-      if (TM.getRelocationModel() == Reloc::PIC_)
-        return getTextSection(false);
-      else
-        return getSection("__TEXT", "__const");
-    }
-    
-    /// MachOSymTab - This struct contains information about the offsets and 
-    /// size of symbol table information.
-    /// segment.
-    struct MachOSymTab {
-      uint32_t cmd;     // LC_SYMTAB
-      uint32_t cmdsize; // sizeof( MachOSymTab )
-      uint32_t symoff;  // symbol table offset
-      uint32_t nsyms;   // number of symbol table entries
-      uint32_t stroff;  // string table offset
-      uint32_t strsize; // string table size in bytes
-
-      // Constants for the cmd field
-      // see <mach-o/loader.h>
-      enum { LC_SYMTAB = 0x02  // link-edit stab symbol table info
-      };
-      
-      MachOSymTab() : cmd(LC_SYMTAB), cmdsize(6 * sizeof(uint32_t)), symoff(0),
-        nsyms(0), stroff(0), strsize(0) { }
-    };
-    
-    /// MachOSymTab - This struct contains information about the offsets and 
-    /// size of symbol table information.
-    /// segment.
-    struct MachODySymTab {
-      uint32_t cmd;             // LC_DYSYMTAB
-      uint32_t cmdsize;         // sizeof( MachODySymTab )
-      uint32_t ilocalsym;       // index to local symbols
-      uint32_t nlocalsym;       // number of local symbols
-      uint32_t iextdefsym;      // index to externally defined symbols
-      uint32_t nextdefsym;      // number of externally defined symbols
-      uint32_t iundefsym;       // index to undefined symbols
-      uint32_t nundefsym;       // number of undefined symbols
-      uint32_t tocoff;          // file offset to table of contents
-      uint32_t ntoc;            // number of entries in table of contents
-      uint32_t modtaboff;       // file offset to module table
-      uint32_t nmodtab;         // number of module table entries
-      uint32_t extrefsymoff;    // offset to referenced symbol table
-      uint32_t nextrefsyms;     // number of referenced symbol table entries
-      uint32_t indirectsymoff;  // file offset to the indirect symbol table
-      uint32_t nindirectsyms;   // number of indirect symbol table entries
-      uint32_t extreloff;       // offset to external relocation entries
-      uint32_t nextrel;         // number of external relocation entries
-      uint32_t locreloff;       // offset to local relocation entries
-      uint32_t nlocrel;         // number of local relocation entries
-
-      // Constants for the cmd field
-      // see <mach-o/loader.h>
-      enum { LC_DYSYMTAB = 0x0B  // dynamic link-edit symbol table info
-      };
-      
-      MachODySymTab() : cmd(LC_DYSYMTAB), cmdsize(20 * sizeof(uint32_t)),
-        ilocalsym(0), nlocalsym(0), iextdefsym(0), nextdefsym(0),
-        iundefsym(0), nundefsym(0), tocoff(0), ntoc(0), modtaboff(0),
-        nmodtab(0), extrefsymoff(0), nextrefsyms(0), indirectsymoff(0),
-        nindirectsyms(0), extreloff(0), nextrel(0), locreloff(0), nlocrel(0) { }
-    };
-    
-    /// SymTab - The "stab" style symbol table information
-    MachOSymTab   SymTab;     
-    /// DySymTab - symbol table info for the dynamic link editor
-    MachODySymTab DySymTab;
-
-    struct MachOSymCmp {
-      // FIXME: this does not appear to be sorting 'f' after 'F'
-      bool operator()(const MachOSym &LHS, const MachOSym &RHS) {
-        return LHS.GVName < RHS.GVName;
-      }
-    };
-
-    /// PartitionByLocal - Simple boolean predicate that returns true if Sym is
-    /// a local symbol rather than an external symbol.
-    static bool PartitionByLocal(const MachOSym &Sym);
-
-    /// PartitionByDefined - Simple boolean predicate that returns true if Sym 
-    /// is defined in this module.
-    static bool PartitionByDefined(const MachOSym &Sym);
-
-  protected:
-  
-    /// SymbolTable - This is the list of symbols we have emitted to the file.
-    /// This actually gets rearranged before emission to the file (to put the
-    /// local symbols first in the list).
-    std::vector<MachOSym> SymbolTable;
-    
-    /// SymT - A buffer to hold the symbol table before we write it out at the
-    /// appropriate location in the file.
-    DataBuffer SymT;
-    
-    /// StrT - A buffer to hold the string table before we write it out at the
-    /// appropriate location in the file.
-    DataBuffer StrT;
-    
-    /// PendingSyms - This is a list of externally defined symbols that we have
-    /// been asked to emit, but have not seen a reference to.  When a reference
-    /// is seen, the symbol will move from this list to the SymbolTable.
-    std::vector<MachOSym> PendingSyms;
-    
-    /// DynamicSymbolTable - This is just a vector of indices into
-    /// SymbolTable to aid in emitting the DYSYMTAB load command.
-    std::vector<unsigned> DynamicSymbolTable;
-    
-    static void InitMem(const Constant *C, void *Addr, intptr_t Offset,
-                        const TargetData *TD, 
-                        std::vector<MachineRelocation> &MRs);
-
-  private:
-    void AddSymbolToSection(MachOSection *MOS, GlobalVariable *GV);
-    void EmitGlobal(GlobalVariable *GV);
-    void EmitHeaderAndLoadCommands();
-    void EmitSections();
-    void BufferSymbolAndStringTable();
-    void CalculateRelocations(MachOSection &MOS);
-
-    MachineRelocation GetJTRelocation(unsigned Offset,
-                                      MachineBasicBlock *MBB) const {
-      return TM.getMachOWriterInfo()->GetJTRelocation(Offset, MBB);
-    }
-
-    /// GetTargetRelocation - Returns the number of relocations.
-    unsigned GetTargetRelocation(MachineRelocation &MR,
-                                 unsigned FromIdx,
-                                 unsigned ToAddr,
-                                 unsigned ToIndex,
-                                 OutputBuffer &RelocOut,
-                                 OutputBuffer &SecOut,
-                                 bool Scattered) {
-      return TM.getMachOWriterInfo()->GetTargetRelocation(MR, FromIdx, ToAddr,
-                                                          ToIndex, RelocOut,
-                                                          SecOut, Scattered);
-    }
-  };
-}
-
-#endif