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      1 //===-- llvm/Support/MachO.h - The MachO file format ------------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file defines manifest constants for the MachO object file format.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #ifndef LLVM_SUPPORT_MACHO_H
     15 #define LLVM_SUPPORT_MACHO_H
     16 
     17 #include "llvm/Support/Compiler.h"
     18 #include "llvm/Support/DataTypes.h"
     19 #include "llvm/Support/Host.h"
     20 
     21 namespace llvm {
     22   namespace MachO {
     23     // Enums from <mach-o/loader.h>
     24     enum : uint32_t {
     25       // Constants for the "magic" field in llvm::MachO::mach_header and
     26       // llvm::MachO::mach_header_64
     27       MH_MAGIC    = 0xFEEDFACEu,
     28       MH_CIGAM    = 0xCEFAEDFEu,
     29       MH_MAGIC_64 = 0xFEEDFACFu,
     30       MH_CIGAM_64 = 0xCFFAEDFEu,
     31       FAT_MAGIC   = 0xCAFEBABEu,
     32       FAT_CIGAM   = 0xBEBAFECAu
     33     };
     34 
     35     enum HeaderFileType {
     36       // Constants for the "filetype" field in llvm::MachO::mach_header and
     37       // llvm::MachO::mach_header_64
     38       MH_OBJECT      = 0x1u,
     39       MH_EXECUTE     = 0x2u,
     40       MH_FVMLIB      = 0x3u,
     41       MH_CORE        = 0x4u,
     42       MH_PRELOAD     = 0x5u,
     43       MH_DYLIB       = 0x6u,
     44       MH_DYLINKER    = 0x7u,
     45       MH_BUNDLE      = 0x8u,
     46       MH_DYLIB_STUB  = 0x9u,
     47       MH_DSYM        = 0xAu,
     48       MH_KEXT_BUNDLE = 0xBu
     49     };
     50 
     51     enum {
     52       // Constant bits for the "flags" field in llvm::MachO::mach_header and
     53       // llvm::MachO::mach_header_64
     54       MH_NOUNDEFS                = 0x00000001u,
     55       MH_INCRLINK                = 0x00000002u,
     56       MH_DYLDLINK                = 0x00000004u,
     57       MH_BINDATLOAD              = 0x00000008u,
     58       MH_PREBOUND                = 0x00000010u,
     59       MH_SPLIT_SEGS              = 0x00000020u,
     60       MH_LAZY_INIT               = 0x00000040u,
     61       MH_TWOLEVEL                = 0x00000080u,
     62       MH_FORCE_FLAT              = 0x00000100u,
     63       MH_NOMULTIDEFS             = 0x00000200u,
     64       MH_NOFIXPREBINDING         = 0x00000400u,
     65       MH_PREBINDABLE             = 0x00000800u,
     66       MH_ALLMODSBOUND            = 0x00001000u,
     67       MH_SUBSECTIONS_VIA_SYMBOLS = 0x00002000u,
     68       MH_CANONICAL               = 0x00004000u,
     69       MH_WEAK_DEFINES            = 0x00008000u,
     70       MH_BINDS_TO_WEAK           = 0x00010000u,
     71       MH_ALLOW_STACK_EXECUTION   = 0x00020000u,
     72       MH_ROOT_SAFE               = 0x00040000u,
     73       MH_SETUID_SAFE             = 0x00080000u,
     74       MH_NO_REEXPORTED_DYLIBS    = 0x00100000u,
     75       MH_PIE                     = 0x00200000u,
     76       MH_DEAD_STRIPPABLE_DYLIB   = 0x00400000u,
     77       MH_HAS_TLV_DESCRIPTORS     = 0x00800000u,
     78       MH_NO_HEAP_EXECUTION       = 0x01000000u,
     79       MH_APP_EXTENSION_SAFE      = 0x02000000u
     80     };
     81 
     82     enum : uint32_t {
     83       // Flags for the "cmd" field in llvm::MachO::load_command
     84       LC_REQ_DYLD    = 0x80000000u
     85     };
     86 
     87     enum LoadCommandType : uint32_t {
     88       // Constants for the "cmd" field in llvm::MachO::load_command
     89       LC_SEGMENT              = 0x00000001u,
     90       LC_SYMTAB               = 0x00000002u,
     91       LC_SYMSEG               = 0x00000003u,
     92       LC_THREAD               = 0x00000004u,
     93       LC_UNIXTHREAD           = 0x00000005u,
     94       LC_LOADFVMLIB           = 0x00000006u,
     95       LC_IDFVMLIB             = 0x00000007u,
     96       LC_IDENT                = 0x00000008u,
     97       LC_FVMFILE              = 0x00000009u,
     98       LC_PREPAGE              = 0x0000000Au,
     99       LC_DYSYMTAB             = 0x0000000Bu,
    100       LC_LOAD_DYLIB           = 0x0000000Cu,
    101       LC_ID_DYLIB             = 0x0000000Du,
    102       LC_LOAD_DYLINKER        = 0x0000000Eu,
    103       LC_ID_DYLINKER          = 0x0000000Fu,
    104       LC_PREBOUND_DYLIB       = 0x00000010u,
    105       LC_ROUTINES             = 0x00000011u,
    106       LC_SUB_FRAMEWORK        = 0x00000012u,
    107       LC_SUB_UMBRELLA         = 0x00000013u,
    108       LC_SUB_CLIENT           = 0x00000014u,
    109       LC_SUB_LIBRARY          = 0x00000015u,
    110       LC_TWOLEVEL_HINTS       = 0x00000016u,
    111       LC_PREBIND_CKSUM        = 0x00000017u,
    112       LC_LOAD_WEAK_DYLIB      = 0x80000018u,
    113       LC_SEGMENT_64           = 0x00000019u,
    114       LC_ROUTINES_64          = 0x0000001Au,
    115       LC_UUID                 = 0x0000001Bu,
    116       LC_RPATH                = 0x8000001Cu,
    117       LC_CODE_SIGNATURE       = 0x0000001Du,
    118       LC_SEGMENT_SPLIT_INFO   = 0x0000001Eu,
    119       LC_REEXPORT_DYLIB       = 0x8000001Fu,
    120       LC_LAZY_LOAD_DYLIB      = 0x00000020u,
    121       LC_ENCRYPTION_INFO      = 0x00000021u,
    122       LC_DYLD_INFO            = 0x00000022u,
    123       LC_DYLD_INFO_ONLY       = 0x80000022u,
    124       LC_LOAD_UPWARD_DYLIB    = 0x80000023u,
    125       LC_VERSION_MIN_MACOSX   = 0x00000024u,
    126       LC_VERSION_MIN_IPHONEOS = 0x00000025u,
    127       LC_FUNCTION_STARTS      = 0x00000026u,
    128       LC_DYLD_ENVIRONMENT     = 0x00000027u,
    129       LC_MAIN                 = 0x80000028u,
    130       LC_DATA_IN_CODE         = 0x00000029u,
    131       LC_SOURCE_VERSION       = 0x0000002Au,
    132       LC_DYLIB_CODE_SIGN_DRS  = 0x0000002Bu,
    133       LC_ENCRYPTION_INFO_64   = 0x0000002Cu,
    134       LC_LINKER_OPTION        = 0x0000002Du,
    135       LC_LINKER_OPTIMIZATION_HINT = 0x0000002Eu,
    136       LC_VERSION_MIN_TVOS     = 0x0000002Fu,
    137       LC_VERSION_MIN_WATCHOS  = 0x00000030u,
    138     };
    139 
    140     enum : uint32_t {
    141       // Constant bits for the "flags" field in llvm::MachO::segment_command
    142       SG_HIGHVM              = 0x1u,
    143       SG_FVMLIB              = 0x2u,
    144       SG_NORELOC             = 0x4u,
    145       SG_PROTECTED_VERSION_1 = 0x8u,
    146 
    147       // Constant masks for the "flags" field in llvm::MachO::section and
    148       // llvm::MachO::section_64
    149       SECTION_TYPE           = 0x000000ffu, // SECTION_TYPE
    150       SECTION_ATTRIBUTES     = 0xffffff00u, // SECTION_ATTRIBUTES
    151       SECTION_ATTRIBUTES_USR = 0xff000000u, // SECTION_ATTRIBUTES_USR
    152       SECTION_ATTRIBUTES_SYS = 0x00ffff00u  // SECTION_ATTRIBUTES_SYS
    153     };
    154 
    155     /// These are the section type and attributes fields.  A MachO section can
    156     /// have only one Type, but can have any of the attributes specified.
    157     enum SectionType : uint32_t {
    158       // Constant masks for the "flags[7:0]" field in llvm::MachO::section and
    159       // llvm::MachO::section_64 (mask "flags" with SECTION_TYPE)
    160 
    161       /// S_REGULAR - Regular section.
    162       S_REGULAR                             = 0x00u,
    163       /// S_ZEROFILL - Zero fill on demand section.
    164       S_ZEROFILL                            = 0x01u,
    165       /// S_CSTRING_LITERALS - Section with literal C strings.
    166       S_CSTRING_LITERALS                    = 0x02u,
    167       /// S_4BYTE_LITERALS - Section with 4 byte literals.
    168       S_4BYTE_LITERALS                      = 0x03u,
    169       /// S_8BYTE_LITERALS - Section with 8 byte literals.
    170       S_8BYTE_LITERALS                      = 0x04u,
    171       /// S_LITERAL_POINTERS - Section with pointers to literals.
    172       S_LITERAL_POINTERS                    = 0x05u,
    173       /// S_NON_LAZY_SYMBOL_POINTERS - Section with non-lazy symbol pointers.
    174       S_NON_LAZY_SYMBOL_POINTERS            = 0x06u,
    175       /// S_LAZY_SYMBOL_POINTERS - Section with lazy symbol pointers.
    176       S_LAZY_SYMBOL_POINTERS                = 0x07u,
    177       /// S_SYMBOL_STUBS - Section with symbol stubs, byte size of stub in
    178       /// the Reserved2 field.
    179       S_SYMBOL_STUBS                        = 0x08u,
    180       /// S_MOD_INIT_FUNC_POINTERS - Section with only function pointers for
    181       /// initialization.
    182       S_MOD_INIT_FUNC_POINTERS              = 0x09u,
    183       /// S_MOD_TERM_FUNC_POINTERS - Section with only function pointers for
    184       /// termination.
    185       S_MOD_TERM_FUNC_POINTERS              = 0x0au,
    186       /// S_COALESCED - Section contains symbols that are to be coalesced.
    187       S_COALESCED                           = 0x0bu,
    188       /// S_GB_ZEROFILL - Zero fill on demand section (that can be larger than 4
    189       /// gigabytes).
    190       S_GB_ZEROFILL                         = 0x0cu,
    191       /// S_INTERPOSING - Section with only pairs of function pointers for
    192       /// interposing.
    193       S_INTERPOSING                         = 0x0du,
    194       /// S_16BYTE_LITERALS - Section with only 16 byte literals.
    195       S_16BYTE_LITERALS                     = 0x0eu,
    196       /// S_DTRACE_DOF - Section contains DTrace Object Format.
    197       S_DTRACE_DOF                          = 0x0fu,
    198       /// S_LAZY_DYLIB_SYMBOL_POINTERS - Section with lazy symbol pointers to
    199       /// lazy loaded dylibs.
    200       S_LAZY_DYLIB_SYMBOL_POINTERS          = 0x10u,
    201       /// S_THREAD_LOCAL_REGULAR - Thread local data section.
    202       S_THREAD_LOCAL_REGULAR                = 0x11u,
    203       /// S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
    204       S_THREAD_LOCAL_ZEROFILL               = 0x12u,
    205       /// S_THREAD_LOCAL_VARIABLES - Section with thread local variable
    206       /// structure data.
    207       S_THREAD_LOCAL_VARIABLES              = 0x13u,
    208       /// S_THREAD_LOCAL_VARIABLE_POINTERS - Section with pointers to thread
    209       /// local structures.
    210       S_THREAD_LOCAL_VARIABLE_POINTERS      = 0x14u,
    211       /// S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local
    212       /// variable initialization pointers to functions.
    213       S_THREAD_LOCAL_INIT_FUNCTION_POINTERS = 0x15u,
    214 
    215       LAST_KNOWN_SECTION_TYPE = S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
    216     };
    217 
    218     enum : uint32_t {
    219       // Constant masks for the "flags[31:24]" field in llvm::MachO::section and
    220       // llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_USR)
    221 
    222       /// S_ATTR_PURE_INSTRUCTIONS - Section contains only true machine
    223       /// instructions.
    224       S_ATTR_PURE_INSTRUCTIONS   = 0x80000000u,
    225       /// S_ATTR_NO_TOC - Section contains coalesced symbols that are not to be
    226       /// in a ranlib table of contents.
    227       S_ATTR_NO_TOC              = 0x40000000u,
    228       /// S_ATTR_STRIP_STATIC_SYMS - Ok to strip static symbols in this section
    229       /// in files with the MY_DYLDLINK flag.
    230       S_ATTR_STRIP_STATIC_SYMS   = 0x20000000u,
    231       /// S_ATTR_NO_DEAD_STRIP - No dead stripping.
    232       S_ATTR_NO_DEAD_STRIP       = 0x10000000u,
    233       /// S_ATTR_LIVE_SUPPORT - Blocks are live if they reference live blocks.
    234       S_ATTR_LIVE_SUPPORT        = 0x08000000u,
    235       /// S_ATTR_SELF_MODIFYING_CODE - Used with i386 code stubs written on by
    236       /// dyld.
    237       S_ATTR_SELF_MODIFYING_CODE = 0x04000000u,
    238       /// S_ATTR_DEBUG - A debug section.
    239       S_ATTR_DEBUG               = 0x02000000u,
    240 
    241       // Constant masks for the "flags[23:8]" field in llvm::MachO::section and
    242       // llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_SYS)
    243 
    244       /// S_ATTR_SOME_INSTRUCTIONS - Section contains some machine instructions.
    245       S_ATTR_SOME_INSTRUCTIONS   = 0x00000400u,
    246       /// S_ATTR_EXT_RELOC - Section has external relocation entries.
    247       S_ATTR_EXT_RELOC           = 0x00000200u,
    248       /// S_ATTR_LOC_RELOC - Section has local relocation entries.
    249       S_ATTR_LOC_RELOC           = 0x00000100u,
    250 
    251       // Constant masks for the value of an indirect symbol in an indirect
    252       // symbol table
    253       INDIRECT_SYMBOL_LOCAL = 0x80000000u,
    254       INDIRECT_SYMBOL_ABS   = 0x40000000u
    255     };
    256 
    257     enum DataRegionType {
    258       // Constants for the "kind" field in a data_in_code_entry structure
    259       DICE_KIND_DATA             = 1u,
    260       DICE_KIND_JUMP_TABLE8      = 2u,
    261       DICE_KIND_JUMP_TABLE16     = 3u,
    262       DICE_KIND_JUMP_TABLE32     = 4u,
    263       DICE_KIND_ABS_JUMP_TABLE32 = 5u
    264     };
    265 
    266     enum RebaseType {
    267       REBASE_TYPE_POINTER         = 1u,
    268       REBASE_TYPE_TEXT_ABSOLUTE32 = 2u,
    269       REBASE_TYPE_TEXT_PCREL32    = 3u
    270     };
    271 
    272     enum {
    273       REBASE_OPCODE_MASK    = 0xF0u,
    274       REBASE_IMMEDIATE_MASK = 0x0Fu
    275     };
    276 
    277     enum RebaseOpcode {
    278       REBASE_OPCODE_DONE                               = 0x00u,
    279       REBASE_OPCODE_SET_TYPE_IMM                       = 0x10u,
    280       REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB        = 0x20u,
    281       REBASE_OPCODE_ADD_ADDR_ULEB                      = 0x30u,
    282       REBASE_OPCODE_ADD_ADDR_IMM_SCALED                = 0x40u,
    283       REBASE_OPCODE_DO_REBASE_IMM_TIMES                = 0x50u,
    284       REBASE_OPCODE_DO_REBASE_ULEB_TIMES               = 0x60u,
    285       REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB            = 0x70u,
    286       REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB = 0x80u
    287     };
    288 
    289     enum BindType {
    290       BIND_TYPE_POINTER         = 1u,
    291       BIND_TYPE_TEXT_ABSOLUTE32 = 2u,
    292       BIND_TYPE_TEXT_PCREL32    = 3u
    293     };
    294 
    295     enum BindSpecialDylib {
    296       BIND_SPECIAL_DYLIB_SELF            =  0,
    297       BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE = -1,
    298       BIND_SPECIAL_DYLIB_FLAT_LOOKUP     = -2
    299     };
    300 
    301     enum {
    302       BIND_SYMBOL_FLAGS_WEAK_IMPORT         = 0x1u,
    303       BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION = 0x8u,
    304 
    305       BIND_OPCODE_MASK                      = 0xF0u,
    306       BIND_IMMEDIATE_MASK                   = 0x0Fu
    307     };
    308 
    309     enum BindOpcode {
    310       BIND_OPCODE_DONE                             = 0x00u,
    311       BIND_OPCODE_SET_DYLIB_ORDINAL_IMM            = 0x10u,
    312       BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB           = 0x20u,
    313       BIND_OPCODE_SET_DYLIB_SPECIAL_IMM            = 0x30u,
    314       BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM    = 0x40u,
    315       BIND_OPCODE_SET_TYPE_IMM                     = 0x50u,
    316       BIND_OPCODE_SET_ADDEND_SLEB                  = 0x60u,
    317       BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB      = 0x70u,
    318       BIND_OPCODE_ADD_ADDR_ULEB                    = 0x80u,
    319       BIND_OPCODE_DO_BIND                          = 0x90u,
    320       BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB            = 0xA0u,
    321       BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED      = 0xB0u,
    322       BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB = 0xC0u
    323     };
    324 
    325     enum {
    326       EXPORT_SYMBOL_FLAGS_KIND_MASK           = 0x03u,
    327       EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION     = 0x04u,
    328       EXPORT_SYMBOL_FLAGS_REEXPORT            = 0x08u,
    329       EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER   = 0x10u
    330     };
    331 
    332     enum ExportSymbolKind {
    333       EXPORT_SYMBOL_FLAGS_KIND_REGULAR        = 0x00u,
    334       EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL   = 0x01u,
    335       EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE       = 0x02u
    336     };
    337 
    338     enum {
    339       // Constant masks for the "n_type" field in llvm::MachO::nlist and
    340       // llvm::MachO::nlist_64
    341       N_STAB = 0xe0,
    342       N_PEXT = 0x10,
    343       N_TYPE = 0x0e,
    344       N_EXT  = 0x01
    345     };
    346 
    347     enum NListType {
    348       // Constants for the "n_type & N_TYPE" llvm::MachO::nlist and
    349       // llvm::MachO::nlist_64
    350       N_UNDF = 0x0u,
    351       N_ABS  = 0x2u,
    352       N_SECT = 0xeu,
    353       N_PBUD = 0xcu,
    354       N_INDR = 0xau
    355     };
    356 
    357     enum SectionOrdinal {
    358       // Constants for the "n_sect" field in llvm::MachO::nlist and
    359       // llvm::MachO::nlist_64
    360       NO_SECT  = 0u,
    361       MAX_SECT = 0xffu
    362     };
    363 
    364     enum {
    365       // Constant masks for the "n_desc" field in llvm::MachO::nlist and
    366       // llvm::MachO::nlist_64
    367       // The low 3 bits are the for the REFERENCE_TYPE.
    368       REFERENCE_TYPE                            = 0x7,
    369       REFERENCE_FLAG_UNDEFINED_NON_LAZY         = 0,
    370       REFERENCE_FLAG_UNDEFINED_LAZY             = 1,
    371       REFERENCE_FLAG_DEFINED                    = 2,
    372       REFERENCE_FLAG_PRIVATE_DEFINED            = 3,
    373       REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY = 4,
    374       REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY     = 5,
    375       // Flag bits (some overlap with the library ordinal bits).
    376       N_ARM_THUMB_DEF   = 0x0008u,
    377       REFERENCED_DYNAMICALLY = 0x0010u,
    378       N_NO_DEAD_STRIP   = 0x0020u,
    379       N_WEAK_REF        = 0x0040u,
    380       N_WEAK_DEF        = 0x0080u,
    381       N_SYMBOL_RESOLVER = 0x0100u,
    382       N_ALT_ENTRY       = 0x0200u,
    383       // For undefined symbols coming from libraries, see GET_LIBRARY_ORDINAL()
    384       // as these are in the top 8 bits.
    385       SELF_LIBRARY_ORDINAL   = 0x0,
    386       MAX_LIBRARY_ORDINAL    = 0xfd,
    387       DYNAMIC_LOOKUP_ORDINAL = 0xfe,
    388       EXECUTABLE_ORDINAL     = 0xff
    389     };
    390 
    391     enum StabType {
    392       // Constant values for the "n_type" field in llvm::MachO::nlist and
    393       // llvm::MachO::nlist_64 when "(n_type & N_STAB) != 0"
    394       N_GSYM    = 0x20u,
    395       N_FNAME   = 0x22u,
    396       N_FUN     = 0x24u,
    397       N_STSYM   = 0x26u,
    398       N_LCSYM   = 0x28u,
    399       N_BNSYM   = 0x2Eu,
    400       N_PC      = 0x30u,
    401       N_AST     = 0x32u,
    402       N_OPT     = 0x3Cu,
    403       N_RSYM    = 0x40u,
    404       N_SLINE   = 0x44u,
    405       N_ENSYM   = 0x4Eu,
    406       N_SSYM    = 0x60u,
    407       N_SO      = 0x64u,
    408       N_OSO     = 0x66u,
    409       N_LSYM    = 0x80u,
    410       N_BINCL   = 0x82u,
    411       N_SOL     = 0x84u,
    412       N_PARAMS  = 0x86u,
    413       N_VERSION = 0x88u,
    414       N_OLEVEL  = 0x8Au,
    415       N_PSYM    = 0xA0u,
    416       N_EINCL   = 0xA2u,
    417       N_ENTRY   = 0xA4u,
    418       N_LBRAC   = 0xC0u,
    419       N_EXCL    = 0xC2u,
    420       N_RBRAC   = 0xE0u,
    421       N_BCOMM   = 0xE2u,
    422       N_ECOMM   = 0xE4u,
    423       N_ECOML   = 0xE8u,
    424       N_LENG    = 0xFEu
    425     };
    426 
    427     enum : uint32_t {
    428       // Constant values for the r_symbolnum field in an
    429       // llvm::MachO::relocation_info structure when r_extern is 0.
    430       R_ABS = 0,
    431 
    432       // Constant bits for the r_address field in an
    433       // llvm::MachO::relocation_info structure.
    434       R_SCATTERED = 0x80000000
    435     };
    436 
    437     enum RelocationInfoType {
    438       // Constant values for the r_type field in an
    439       // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
    440       // structure.
    441       GENERIC_RELOC_VANILLA        = 0,
    442       GENERIC_RELOC_PAIR           = 1,
    443       GENERIC_RELOC_SECTDIFF       = 2,
    444       GENERIC_RELOC_PB_LA_PTR      = 3,
    445       GENERIC_RELOC_LOCAL_SECTDIFF = 4,
    446       GENERIC_RELOC_TLV            = 5,
    447 
    448       // Constant values for the r_type field in a PowerPC architecture
    449       // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
    450       // structure.
    451       PPC_RELOC_VANILLA            = GENERIC_RELOC_VANILLA,
    452       PPC_RELOC_PAIR               = GENERIC_RELOC_PAIR,
    453       PPC_RELOC_BR14               = 2,
    454       PPC_RELOC_BR24               = 3,
    455       PPC_RELOC_HI16               = 4,
    456       PPC_RELOC_LO16               = 5,
    457       PPC_RELOC_HA16               = 6,
    458       PPC_RELOC_LO14               = 7,
    459       PPC_RELOC_SECTDIFF           = 8,
    460       PPC_RELOC_PB_LA_PTR          = 9,
    461       PPC_RELOC_HI16_SECTDIFF      = 10,
    462       PPC_RELOC_LO16_SECTDIFF      = 11,
    463       PPC_RELOC_HA16_SECTDIFF      = 12,
    464       PPC_RELOC_JBSR               = 13,
    465       PPC_RELOC_LO14_SECTDIFF      = 14,
    466       PPC_RELOC_LOCAL_SECTDIFF     = 15,
    467 
    468       // Constant values for the r_type field in an ARM architecture
    469       // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
    470       // structure.
    471       ARM_RELOC_VANILLA            = GENERIC_RELOC_VANILLA,
    472       ARM_RELOC_PAIR               = GENERIC_RELOC_PAIR,
    473       ARM_RELOC_SECTDIFF           = GENERIC_RELOC_SECTDIFF,
    474       ARM_RELOC_LOCAL_SECTDIFF     = 3,
    475       ARM_RELOC_PB_LA_PTR          = 4,
    476       ARM_RELOC_BR24               = 5,
    477       ARM_THUMB_RELOC_BR22         = 6,
    478       ARM_THUMB_32BIT_BRANCH       = 7, // obsolete
    479       ARM_RELOC_HALF               = 8,
    480       ARM_RELOC_HALF_SECTDIFF      = 9,
    481 
    482       // Constant values for the r_type field in an ARM64 architecture
    483       // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
    484       // structure.
    485 
    486       // For pointers.
    487       ARM64_RELOC_UNSIGNED            = 0,
    488       // Must be followed by an ARM64_RELOC_UNSIGNED
    489       ARM64_RELOC_SUBTRACTOR          = 1,
    490       // A B/BL instruction with 26-bit displacement.
    491       ARM64_RELOC_BRANCH26            = 2,
    492       // PC-rel distance to page of target.
    493       ARM64_RELOC_PAGE21              = 3,
    494       // Offset within page, scaled by r_length.
    495       ARM64_RELOC_PAGEOFF12           = 4,
    496       // PC-rel distance to page of GOT slot.
    497       ARM64_RELOC_GOT_LOAD_PAGE21     = 5,
    498       // Offset within page of GOT slot, scaled by r_length.
    499       ARM64_RELOC_GOT_LOAD_PAGEOFF12  = 6,
    500       // For pointers to GOT slots.
    501       ARM64_RELOC_POINTER_TO_GOT      = 7,
    502       // PC-rel distance to page of TLVP slot.
    503       ARM64_RELOC_TLVP_LOAD_PAGE21    = 8,
    504       // Offset within page of TLVP slot, scaled by r_length.
    505       ARM64_RELOC_TLVP_LOAD_PAGEOFF12 = 9,
    506       // Must be followed by ARM64_RELOC_PAGE21 or ARM64_RELOC_PAGEOFF12.
    507       ARM64_RELOC_ADDEND              = 10,
    508 
    509       // Constant values for the r_type field in an x86_64 architecture
    510       // llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
    511       // structure
    512       X86_64_RELOC_UNSIGNED        = 0,
    513       X86_64_RELOC_SIGNED          = 1,
    514       X86_64_RELOC_BRANCH          = 2,
    515       X86_64_RELOC_GOT_LOAD        = 3,
    516       X86_64_RELOC_GOT             = 4,
    517       X86_64_RELOC_SUBTRACTOR      = 5,
    518       X86_64_RELOC_SIGNED_1        = 6,
    519       X86_64_RELOC_SIGNED_2        = 7,
    520       X86_64_RELOC_SIGNED_4        = 8,
    521       X86_64_RELOC_TLV             = 9
    522     };
    523 
    524     // Values for segment_command.initprot.
    525     // From <mach/vm_prot.h>
    526     enum {
    527       VM_PROT_READ    = 0x1,
    528       VM_PROT_WRITE   = 0x2,
    529       VM_PROT_EXECUTE = 0x4
    530     };
    531 
    532     // Structs from <mach-o/loader.h>
    533 
    534     struct mach_header {
    535       uint32_t magic;
    536       uint32_t cputype;
    537       uint32_t cpusubtype;
    538       uint32_t filetype;
    539       uint32_t ncmds;
    540       uint32_t sizeofcmds;
    541       uint32_t flags;
    542     };
    543 
    544     struct mach_header_64 {
    545       uint32_t magic;
    546       uint32_t cputype;
    547       uint32_t cpusubtype;
    548       uint32_t filetype;
    549       uint32_t ncmds;
    550       uint32_t sizeofcmds;
    551       uint32_t flags;
    552       uint32_t reserved;
    553     };
    554 
    555     struct load_command {
    556       uint32_t cmd;
    557       uint32_t cmdsize;
    558     };
    559 
    560     struct segment_command {
    561       uint32_t cmd;
    562       uint32_t cmdsize;
    563       char segname[16];
    564       uint32_t vmaddr;
    565       uint32_t vmsize;
    566       uint32_t fileoff;
    567       uint32_t filesize;
    568       uint32_t maxprot;
    569       uint32_t initprot;
    570       uint32_t nsects;
    571       uint32_t flags;
    572     };
    573 
    574     struct segment_command_64 {
    575       uint32_t cmd;
    576       uint32_t cmdsize;
    577       char segname[16];
    578       uint64_t vmaddr;
    579       uint64_t vmsize;
    580       uint64_t fileoff;
    581       uint64_t filesize;
    582       uint32_t maxprot;
    583       uint32_t initprot;
    584       uint32_t nsects;
    585       uint32_t flags;
    586     };
    587 
    588     struct section {
    589       char sectname[16];
    590       char segname[16];
    591       uint32_t addr;
    592       uint32_t size;
    593       uint32_t offset;
    594       uint32_t align;
    595       uint32_t reloff;
    596       uint32_t nreloc;
    597       uint32_t flags;
    598       uint32_t reserved1;
    599       uint32_t reserved2;
    600     };
    601 
    602     struct section_64 {
    603       char sectname[16];
    604       char segname[16];
    605       uint64_t addr;
    606       uint64_t size;
    607       uint32_t offset;
    608       uint32_t align;
    609       uint32_t reloff;
    610       uint32_t nreloc;
    611       uint32_t flags;
    612       uint32_t reserved1;
    613       uint32_t reserved2;
    614       uint32_t reserved3;
    615     };
    616 
    617     struct fvmlib {
    618       uint32_t name;
    619       uint32_t minor_version;
    620       uint32_t header_addr;
    621     };
    622 
    623     struct fvmlib_command {
    624       uint32_t  cmd;
    625       uint32_t cmdsize;
    626       struct fvmlib fvmlib;
    627     };
    628 
    629     struct dylib {
    630       uint32_t name;
    631       uint32_t timestamp;
    632       uint32_t current_version;
    633       uint32_t compatibility_version;
    634     };
    635 
    636     struct dylib_command {
    637       uint32_t cmd;
    638       uint32_t cmdsize;
    639       struct dylib dylib;
    640     };
    641 
    642     struct sub_framework_command {
    643       uint32_t cmd;
    644       uint32_t cmdsize;
    645       uint32_t umbrella;
    646     };
    647 
    648     struct sub_client_command {
    649       uint32_t cmd;
    650       uint32_t cmdsize;
    651       uint32_t client;
    652     };
    653 
    654     struct sub_umbrella_command {
    655       uint32_t cmd;
    656       uint32_t cmdsize;
    657       uint32_t sub_umbrella;
    658     };
    659 
    660     struct sub_library_command {
    661       uint32_t cmd;
    662       uint32_t cmdsize;
    663       uint32_t sub_library;
    664     };
    665 
    666     struct prebound_dylib_command {
    667       uint32_t cmd;
    668       uint32_t cmdsize;
    669       uint32_t name;
    670       uint32_t nmodules;
    671       uint32_t linked_modules;
    672     };
    673 
    674     struct dylinker_command {
    675       uint32_t cmd;
    676       uint32_t cmdsize;
    677       uint32_t name;
    678     };
    679 
    680     struct thread_command {
    681       uint32_t cmd;
    682       uint32_t cmdsize;
    683     };
    684 
    685     struct routines_command {
    686       uint32_t cmd;
    687       uint32_t cmdsize;
    688       uint32_t init_address;
    689       uint32_t init_module;
    690       uint32_t reserved1;
    691       uint32_t reserved2;
    692       uint32_t reserved3;
    693       uint32_t reserved4;
    694       uint32_t reserved5;
    695       uint32_t reserved6;
    696     };
    697 
    698     struct routines_command_64 {
    699       uint32_t cmd;
    700       uint32_t cmdsize;
    701       uint64_t init_address;
    702       uint64_t init_module;
    703       uint64_t reserved1;
    704       uint64_t reserved2;
    705       uint64_t reserved3;
    706       uint64_t reserved4;
    707       uint64_t reserved5;
    708       uint64_t reserved6;
    709     };
    710 
    711     struct symtab_command {
    712       uint32_t cmd;
    713       uint32_t cmdsize;
    714       uint32_t symoff;
    715       uint32_t nsyms;
    716       uint32_t stroff;
    717       uint32_t strsize;
    718     };
    719 
    720     struct dysymtab_command {
    721       uint32_t cmd;
    722       uint32_t cmdsize;
    723       uint32_t ilocalsym;
    724       uint32_t nlocalsym;
    725       uint32_t iextdefsym;
    726       uint32_t nextdefsym;
    727       uint32_t iundefsym;
    728       uint32_t nundefsym;
    729       uint32_t tocoff;
    730       uint32_t ntoc;
    731       uint32_t modtaboff;
    732       uint32_t nmodtab;
    733       uint32_t extrefsymoff;
    734       uint32_t nextrefsyms;
    735       uint32_t indirectsymoff;
    736       uint32_t nindirectsyms;
    737       uint32_t extreloff;
    738       uint32_t nextrel;
    739       uint32_t locreloff;
    740       uint32_t nlocrel;
    741     };
    742 
    743     struct dylib_table_of_contents {
    744       uint32_t symbol_index;
    745       uint32_t module_index;
    746     };
    747 
    748     struct dylib_module {
    749       uint32_t module_name;
    750       uint32_t iextdefsym;
    751       uint32_t nextdefsym;
    752       uint32_t irefsym;
    753       uint32_t nrefsym;
    754       uint32_t ilocalsym;
    755       uint32_t nlocalsym;
    756       uint32_t iextrel;
    757       uint32_t nextrel;
    758       uint32_t iinit_iterm;
    759       uint32_t ninit_nterm;
    760       uint32_t objc_module_info_addr;
    761       uint32_t objc_module_info_size;
    762     };
    763 
    764     struct dylib_module_64 {
    765       uint32_t module_name;
    766       uint32_t iextdefsym;
    767       uint32_t nextdefsym;
    768       uint32_t irefsym;
    769       uint32_t nrefsym;
    770       uint32_t ilocalsym;
    771       uint32_t nlocalsym;
    772       uint32_t iextrel;
    773       uint32_t nextrel;
    774       uint32_t iinit_iterm;
    775       uint32_t ninit_nterm;
    776       uint32_t objc_module_info_size;
    777       uint64_t objc_module_info_addr;
    778     };
    779 
    780     struct dylib_reference {
    781       uint32_t isym:24,
    782                flags:8;
    783     };
    784 
    785     struct twolevel_hints_command {
    786       uint32_t cmd;
    787       uint32_t cmdsize;
    788       uint32_t offset;
    789       uint32_t nhints;
    790     };
    791 
    792     struct twolevel_hint {
    793       uint32_t isub_image:8,
    794                itoc:24;
    795     };
    796 
    797     struct prebind_cksum_command {
    798       uint32_t cmd;
    799       uint32_t cmdsize;
    800       uint32_t cksum;
    801     };
    802 
    803     struct uuid_command {
    804       uint32_t cmd;
    805       uint32_t cmdsize;
    806       uint8_t uuid[16];
    807     };
    808 
    809     struct rpath_command {
    810       uint32_t cmd;
    811       uint32_t cmdsize;
    812       uint32_t path;
    813     };
    814 
    815     struct linkedit_data_command {
    816       uint32_t cmd;
    817       uint32_t cmdsize;
    818       uint32_t dataoff;
    819       uint32_t datasize;
    820     };
    821 
    822     struct data_in_code_entry {
    823       uint32_t offset;
    824       uint16_t length;
    825       uint16_t kind;
    826     };
    827 
    828     struct source_version_command {
    829       uint32_t cmd;
    830       uint32_t cmdsize;
    831       uint64_t version;
    832     };
    833 
    834     struct encryption_info_command {
    835       uint32_t cmd;
    836       uint32_t cmdsize;
    837       uint32_t cryptoff;
    838       uint32_t cryptsize;
    839       uint32_t cryptid;
    840     };
    841 
    842     struct encryption_info_command_64 {
    843       uint32_t cmd;
    844       uint32_t cmdsize;
    845       uint32_t cryptoff;
    846       uint32_t cryptsize;
    847       uint32_t cryptid;
    848       uint32_t pad;
    849     };
    850 
    851     struct version_min_command {
    852       uint32_t cmd;       // LC_VERSION_MIN_MACOSX or
    853                           // LC_VERSION_MIN_IPHONEOS
    854       uint32_t cmdsize;   // sizeof(struct version_min_command)
    855       uint32_t version;   // X.Y.Z is encoded in nibbles xxxx.yy.zz
    856       uint32_t sdk;       // X.Y.Z is encoded in nibbles xxxx.yy.zz
    857     };
    858 
    859     struct dyld_info_command {
    860       uint32_t cmd;
    861       uint32_t cmdsize;
    862       uint32_t rebase_off;
    863       uint32_t rebase_size;
    864       uint32_t bind_off;
    865       uint32_t bind_size;
    866       uint32_t weak_bind_off;
    867       uint32_t weak_bind_size;
    868       uint32_t lazy_bind_off;
    869       uint32_t lazy_bind_size;
    870       uint32_t export_off;
    871       uint32_t export_size;
    872     };
    873 
    874     struct linker_option_command {
    875       uint32_t cmd;
    876       uint32_t cmdsize;
    877       uint32_t count;
    878     };
    879 
    880     struct symseg_command {
    881       uint32_t cmd;
    882       uint32_t cmdsize;
    883       uint32_t offset;
    884       uint32_t size;
    885     };
    886 
    887     struct ident_command {
    888       uint32_t cmd;
    889       uint32_t cmdsize;
    890     };
    891 
    892     struct fvmfile_command {
    893       uint32_t cmd;
    894       uint32_t cmdsize;
    895       uint32_t name;
    896       uint32_t header_addr;
    897     };
    898 
    899     struct tlv_descriptor_32 {
    900       uint32_t thunk;
    901       uint32_t key;
    902       uint32_t offset;
    903     };
    904 
    905     struct tlv_descriptor_64 {
    906       uint64_t thunk;
    907       uint64_t key;
    908       uint64_t offset;
    909     };
    910 
    911     struct tlv_descriptor {
    912       uintptr_t thunk;
    913       uintptr_t key;
    914       uintptr_t offset;
    915     };
    916 
    917     struct entry_point_command {
    918       uint32_t cmd;
    919       uint32_t cmdsize;
    920       uint64_t entryoff;
    921       uint64_t stacksize;
    922     };
    923 
    924     // Structs from <mach-o/fat.h>
    925     struct fat_header {
    926       uint32_t magic;
    927       uint32_t nfat_arch;
    928     };
    929 
    930     struct fat_arch {
    931       uint32_t cputype;
    932       uint32_t cpusubtype;
    933       uint32_t offset;
    934       uint32_t size;
    935       uint32_t align;
    936     };
    937 
    938     // Structs from <mach-o/reloc.h>
    939     struct relocation_info {
    940       int32_t r_address;
    941       uint32_t r_symbolnum:24,
    942                r_pcrel:1,
    943                r_length:2,
    944                r_extern:1,
    945                r_type:4;
    946     };
    947 
    948     struct scattered_relocation_info {
    949 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)
    950       uint32_t r_scattered:1,
    951                r_pcrel:1,
    952                r_length:2,
    953                r_type:4,
    954                r_address:24;
    955 #else
    956       uint32_t r_address:24,
    957                r_type:4,
    958                r_length:2,
    959                r_pcrel:1,
    960                r_scattered:1;
    961 #endif
    962       int32_t r_value;
    963     };
    964 
    965     // Structs NOT from <mach-o/reloc.h>, but that make LLVM's life easier
    966     struct any_relocation_info {
    967       uint32_t r_word0, r_word1;
    968     };
    969 
    970     // Structs from <mach-o/nlist.h>
    971     struct nlist_base {
    972       uint32_t n_strx;
    973       uint8_t n_type;
    974       uint8_t n_sect;
    975       uint16_t n_desc;
    976     };
    977 
    978     struct nlist {
    979       uint32_t n_strx;
    980       uint8_t n_type;
    981       uint8_t n_sect;
    982       int16_t n_desc;
    983       uint32_t n_value;
    984     };
    985 
    986     struct nlist_64 {
    987       uint32_t n_strx;
    988       uint8_t n_type;
    989       uint8_t n_sect;
    990       uint16_t n_desc;
    991       uint64_t n_value;
    992     };
    993 
    994     // Byte order swapping functions for MachO structs
    995 
    996     inline void swapStruct(mach_header &mh) {
    997       sys::swapByteOrder(mh.magic);
    998       sys::swapByteOrder(mh.cputype);
    999       sys::swapByteOrder(mh.cpusubtype);
   1000       sys::swapByteOrder(mh.filetype);
   1001       sys::swapByteOrder(mh.ncmds);
   1002       sys::swapByteOrder(mh.sizeofcmds);
   1003       sys::swapByteOrder(mh.flags);
   1004     }
   1005 
   1006     inline void swapStruct(mach_header_64 &H) {
   1007       sys::swapByteOrder(H.magic);
   1008       sys::swapByteOrder(H.cputype);
   1009       sys::swapByteOrder(H.cpusubtype);
   1010       sys::swapByteOrder(H.filetype);
   1011       sys::swapByteOrder(H.ncmds);
   1012       sys::swapByteOrder(H.sizeofcmds);
   1013       sys::swapByteOrder(H.flags);
   1014       sys::swapByteOrder(H.reserved);
   1015     }
   1016 
   1017     inline void swapStruct(load_command &lc) {
   1018       sys::swapByteOrder(lc.cmd);
   1019       sys::swapByteOrder(lc.cmdsize);
   1020     }
   1021 
   1022     inline void swapStruct(symtab_command &lc) {
   1023       sys::swapByteOrder(lc.cmd);
   1024       sys::swapByteOrder(lc.cmdsize);
   1025       sys::swapByteOrder(lc.symoff);
   1026       sys::swapByteOrder(lc.nsyms);
   1027       sys::swapByteOrder(lc.stroff);
   1028       sys::swapByteOrder(lc.strsize);
   1029     }
   1030 
   1031     inline void swapStruct(segment_command_64 &seg) {
   1032       sys::swapByteOrder(seg.cmd);
   1033       sys::swapByteOrder(seg.cmdsize);
   1034       sys::swapByteOrder(seg.vmaddr);
   1035       sys::swapByteOrder(seg.vmsize);
   1036       sys::swapByteOrder(seg.fileoff);
   1037       sys::swapByteOrder(seg.filesize);
   1038       sys::swapByteOrder(seg.maxprot);
   1039       sys::swapByteOrder(seg.initprot);
   1040       sys::swapByteOrder(seg.nsects);
   1041       sys::swapByteOrder(seg.flags);
   1042     }
   1043 
   1044     inline void swapStruct(segment_command &seg) {
   1045       sys::swapByteOrder(seg.cmd);
   1046       sys::swapByteOrder(seg.cmdsize);
   1047       sys::swapByteOrder(seg.vmaddr);
   1048       sys::swapByteOrder(seg.vmsize);
   1049       sys::swapByteOrder(seg.fileoff);
   1050       sys::swapByteOrder(seg.filesize);
   1051       sys::swapByteOrder(seg.maxprot);
   1052       sys::swapByteOrder(seg.initprot);
   1053       sys::swapByteOrder(seg.nsects);
   1054       sys::swapByteOrder(seg.flags);
   1055     }
   1056 
   1057     inline void swapStruct(section_64 &sect) {
   1058       sys::swapByteOrder(sect.addr);
   1059       sys::swapByteOrder(sect.size);
   1060       sys::swapByteOrder(sect.offset);
   1061       sys::swapByteOrder(sect.align);
   1062       sys::swapByteOrder(sect.reloff);
   1063       sys::swapByteOrder(sect.nreloc);
   1064       sys::swapByteOrder(sect.flags);
   1065       sys::swapByteOrder(sect.reserved1);
   1066       sys::swapByteOrder(sect.reserved2);
   1067     }
   1068 
   1069     inline void swapStruct(section &sect) {
   1070       sys::swapByteOrder(sect.addr);
   1071       sys::swapByteOrder(sect.size);
   1072       sys::swapByteOrder(sect.offset);
   1073       sys::swapByteOrder(sect.align);
   1074       sys::swapByteOrder(sect.reloff);
   1075       sys::swapByteOrder(sect.nreloc);
   1076       sys::swapByteOrder(sect.flags);
   1077       sys::swapByteOrder(sect.reserved1);
   1078       sys::swapByteOrder(sect.reserved2);
   1079     }
   1080 
   1081     inline void swapStruct(dyld_info_command &info) {
   1082       sys::swapByteOrder(info.cmd);
   1083       sys::swapByteOrder(info.cmdsize);
   1084       sys::swapByteOrder(info.rebase_off);
   1085       sys::swapByteOrder(info.rebase_size);
   1086       sys::swapByteOrder(info.bind_off);
   1087       sys::swapByteOrder(info.bind_size);
   1088       sys::swapByteOrder(info.weak_bind_off);
   1089       sys::swapByteOrder(info.weak_bind_size);
   1090       sys::swapByteOrder(info.lazy_bind_off);
   1091       sys::swapByteOrder(info.lazy_bind_size);
   1092       sys::swapByteOrder(info.export_off);
   1093       sys::swapByteOrder(info.export_size);
   1094     }
   1095 
   1096     inline void swapStruct(dylib_command &d) {
   1097       sys::swapByteOrder(d.cmd);
   1098       sys::swapByteOrder(d.cmdsize);
   1099       sys::swapByteOrder(d.dylib.name);
   1100       sys::swapByteOrder(d.dylib.timestamp);
   1101       sys::swapByteOrder(d.dylib.current_version);
   1102       sys::swapByteOrder(d.dylib.compatibility_version);
   1103     }
   1104 
   1105     inline void swapStruct(sub_framework_command &s) {
   1106       sys::swapByteOrder(s.cmd);
   1107       sys::swapByteOrder(s.cmdsize);
   1108       sys::swapByteOrder(s.umbrella);
   1109     }
   1110 
   1111     inline void swapStruct(sub_umbrella_command &s) {
   1112       sys::swapByteOrder(s.cmd);
   1113       sys::swapByteOrder(s.cmdsize);
   1114       sys::swapByteOrder(s.sub_umbrella);
   1115     }
   1116 
   1117     inline void swapStruct(sub_library_command &s) {
   1118       sys::swapByteOrder(s.cmd);
   1119       sys::swapByteOrder(s.cmdsize);
   1120       sys::swapByteOrder(s.sub_library);
   1121     }
   1122 
   1123     inline void swapStruct(sub_client_command &s) {
   1124       sys::swapByteOrder(s.cmd);
   1125       sys::swapByteOrder(s.cmdsize);
   1126       sys::swapByteOrder(s.client);
   1127     }
   1128 
   1129     inline void swapStruct(routines_command &r) {
   1130       sys::swapByteOrder(r.cmd);
   1131       sys::swapByteOrder(r.cmdsize);
   1132       sys::swapByteOrder(r.init_address);
   1133       sys::swapByteOrder(r.init_module);
   1134       sys::swapByteOrder(r.reserved1);
   1135       sys::swapByteOrder(r.reserved2);
   1136       sys::swapByteOrder(r.reserved3);
   1137       sys::swapByteOrder(r.reserved4);
   1138       sys::swapByteOrder(r.reserved5);
   1139       sys::swapByteOrder(r.reserved6);
   1140     }
   1141 
   1142     inline void swapStruct(routines_command_64 &r) {
   1143       sys::swapByteOrder(r.cmd);
   1144       sys::swapByteOrder(r.cmdsize);
   1145       sys::swapByteOrder(r.init_address);
   1146       sys::swapByteOrder(r.init_module);
   1147       sys::swapByteOrder(r.reserved1);
   1148       sys::swapByteOrder(r.reserved2);
   1149       sys::swapByteOrder(r.reserved3);
   1150       sys::swapByteOrder(r.reserved4);
   1151       sys::swapByteOrder(r.reserved5);
   1152       sys::swapByteOrder(r.reserved6);
   1153     }
   1154 
   1155     inline void swapStruct(thread_command &t) {
   1156       sys::swapByteOrder(t.cmd);
   1157       sys::swapByteOrder(t.cmdsize);
   1158     }
   1159 
   1160     inline void swapStruct(dylinker_command &d) {
   1161       sys::swapByteOrder(d.cmd);
   1162       sys::swapByteOrder(d.cmdsize);
   1163       sys::swapByteOrder(d.name);
   1164     }
   1165 
   1166     inline void swapStruct(uuid_command &u) {
   1167       sys::swapByteOrder(u.cmd);
   1168       sys::swapByteOrder(u.cmdsize);
   1169     }
   1170 
   1171     inline void swapStruct(rpath_command &r) {
   1172       sys::swapByteOrder(r.cmd);
   1173       sys::swapByteOrder(r.cmdsize);
   1174       sys::swapByteOrder(r.path);
   1175     }
   1176 
   1177     inline void swapStruct(source_version_command &s) {
   1178       sys::swapByteOrder(s.cmd);
   1179       sys::swapByteOrder(s.cmdsize);
   1180       sys::swapByteOrder(s.version);
   1181     }
   1182 
   1183     inline void swapStruct(entry_point_command &e) {
   1184       sys::swapByteOrder(e.cmd);
   1185       sys::swapByteOrder(e.cmdsize);
   1186       sys::swapByteOrder(e.entryoff);
   1187       sys::swapByteOrder(e.stacksize);
   1188     }
   1189 
   1190     inline void swapStruct(encryption_info_command &e) {
   1191       sys::swapByteOrder(e.cmd);
   1192       sys::swapByteOrder(e.cmdsize);
   1193       sys::swapByteOrder(e.cryptoff);
   1194       sys::swapByteOrder(e.cryptsize);
   1195       sys::swapByteOrder(e.cryptid);
   1196     }
   1197 
   1198     inline void swapStruct(encryption_info_command_64 &e) {
   1199       sys::swapByteOrder(e.cmd);
   1200       sys::swapByteOrder(e.cmdsize);
   1201       sys::swapByteOrder(e.cryptoff);
   1202       sys::swapByteOrder(e.cryptsize);
   1203       sys::swapByteOrder(e.cryptid);
   1204       sys::swapByteOrder(e.pad);
   1205     }
   1206 
   1207     inline void swapStruct(dysymtab_command &dst) {
   1208       sys::swapByteOrder(dst.cmd);
   1209       sys::swapByteOrder(dst.cmdsize);
   1210       sys::swapByteOrder(dst.ilocalsym);
   1211       sys::swapByteOrder(dst.nlocalsym);
   1212       sys::swapByteOrder(dst.iextdefsym);
   1213       sys::swapByteOrder(dst.nextdefsym);
   1214       sys::swapByteOrder(dst.iundefsym);
   1215       sys::swapByteOrder(dst.nundefsym);
   1216       sys::swapByteOrder(dst.tocoff);
   1217       sys::swapByteOrder(dst.ntoc);
   1218       sys::swapByteOrder(dst.modtaboff);
   1219       sys::swapByteOrder(dst.nmodtab);
   1220       sys::swapByteOrder(dst.extrefsymoff);
   1221       sys::swapByteOrder(dst.nextrefsyms);
   1222       sys::swapByteOrder(dst.indirectsymoff);
   1223       sys::swapByteOrder(dst.nindirectsyms);
   1224       sys::swapByteOrder(dst.extreloff);
   1225       sys::swapByteOrder(dst.nextrel);
   1226       sys::swapByteOrder(dst.locreloff);
   1227       sys::swapByteOrder(dst.nlocrel);
   1228     }
   1229 
   1230     inline void swapStruct(any_relocation_info &reloc) {
   1231       sys::swapByteOrder(reloc.r_word0);
   1232       sys::swapByteOrder(reloc.r_word1);
   1233     }
   1234 
   1235     inline void swapStruct(nlist_base &S) {
   1236       sys::swapByteOrder(S.n_strx);
   1237       sys::swapByteOrder(S.n_desc);
   1238     }
   1239 
   1240     inline void swapStruct(nlist &sym) {
   1241       sys::swapByteOrder(sym.n_strx);
   1242       sys::swapByteOrder(sym.n_desc);
   1243       sys::swapByteOrder(sym.n_value);
   1244     }
   1245 
   1246     inline void swapStruct(nlist_64 &sym) {
   1247       sys::swapByteOrder(sym.n_strx);
   1248       sys::swapByteOrder(sym.n_desc);
   1249       sys::swapByteOrder(sym.n_value);
   1250     }
   1251 
   1252     inline void swapStruct(linkedit_data_command &C) {
   1253       sys::swapByteOrder(C.cmd);
   1254       sys::swapByteOrder(C.cmdsize);
   1255       sys::swapByteOrder(C.dataoff);
   1256       sys::swapByteOrder(C.datasize);
   1257     }
   1258 
   1259     inline void swapStruct(linker_option_command &C) {
   1260       sys::swapByteOrder(C.cmd);
   1261       sys::swapByteOrder(C.cmdsize);
   1262       sys::swapByteOrder(C.count);
   1263     }
   1264 
   1265     inline void swapStruct(version_min_command&C) {
   1266       sys::swapByteOrder(C.cmd);
   1267       sys::swapByteOrder(C.cmdsize);
   1268       sys::swapByteOrder(C.version);
   1269       sys::swapByteOrder(C.sdk);
   1270     }
   1271 
   1272     inline void swapStruct(data_in_code_entry &C) {
   1273       sys::swapByteOrder(C.offset);
   1274       sys::swapByteOrder(C.length);
   1275       sys::swapByteOrder(C.kind);
   1276     }
   1277 
   1278     inline void swapStruct(uint32_t &C) {
   1279       sys::swapByteOrder(C);
   1280     }
   1281 
   1282     // Get/Set functions from <mach-o/nlist.h>
   1283 
   1284     static inline uint16_t GET_LIBRARY_ORDINAL(uint16_t n_desc) {
   1285       return (((n_desc) >> 8u) & 0xffu);
   1286     }
   1287 
   1288     static inline void SET_LIBRARY_ORDINAL(uint16_t &n_desc, uint8_t ordinal) {
   1289       n_desc = (((n_desc) & 0x00ff) | (((ordinal) & 0xff) << 8));
   1290     }
   1291 
   1292     static inline uint8_t GET_COMM_ALIGN (uint16_t n_desc) {
   1293       return (n_desc >> 8u) & 0x0fu;
   1294     }
   1295 
   1296     static inline void SET_COMM_ALIGN (uint16_t &n_desc, uint8_t align) {
   1297       n_desc = ((n_desc & 0xf0ffu) | ((align & 0x0fu) << 8u));
   1298     }
   1299 
   1300     // Enums from <mach/machine.h>
   1301     enum : uint32_t {
   1302       // Capability bits used in the definition of cpu_type.
   1303       CPU_ARCH_MASK  = 0xff000000,   // Mask for architecture bits
   1304       CPU_ARCH_ABI64 = 0x01000000    // 64 bit ABI
   1305     };
   1306 
   1307     // Constants for the cputype field.
   1308     enum CPUType {
   1309       CPU_TYPE_ANY       = -1,
   1310       CPU_TYPE_X86       = 7,
   1311       CPU_TYPE_I386      = CPU_TYPE_X86,
   1312       CPU_TYPE_X86_64    = CPU_TYPE_X86 | CPU_ARCH_ABI64,
   1313    /* CPU_TYPE_MIPS      = 8, */
   1314       CPU_TYPE_MC98000   = 10, // Old Motorola PowerPC
   1315       CPU_TYPE_ARM       = 12,
   1316       CPU_TYPE_ARM64     = CPU_TYPE_ARM | CPU_ARCH_ABI64,
   1317       CPU_TYPE_SPARC     = 14,
   1318       CPU_TYPE_POWERPC   = 18,
   1319       CPU_TYPE_POWERPC64 = CPU_TYPE_POWERPC | CPU_ARCH_ABI64
   1320     };
   1321 
   1322     enum : uint32_t {
   1323       // Capability bits used in the definition of cpusubtype.
   1324       CPU_SUBTYPE_MASK  = 0xff000000,   // Mask for architecture bits
   1325       CPU_SUBTYPE_LIB64 = 0x80000000,   // 64 bit libraries
   1326 
   1327       // Special CPU subtype constants.
   1328       CPU_SUBTYPE_MULTIPLE = ~0u
   1329     };
   1330 
   1331     // Constants for the cpusubtype field.
   1332     enum CPUSubTypeX86 {
   1333       CPU_SUBTYPE_I386_ALL       = 3,
   1334       CPU_SUBTYPE_386            = 3,
   1335       CPU_SUBTYPE_486            = 4,
   1336       CPU_SUBTYPE_486SX          = 0x84,
   1337       CPU_SUBTYPE_586            = 5,
   1338       CPU_SUBTYPE_PENT           = CPU_SUBTYPE_586,
   1339       CPU_SUBTYPE_PENTPRO        = 0x16,
   1340       CPU_SUBTYPE_PENTII_M3      = 0x36,
   1341       CPU_SUBTYPE_PENTII_M5      = 0x56,
   1342       CPU_SUBTYPE_CELERON        = 0x67,
   1343       CPU_SUBTYPE_CELERON_MOBILE = 0x77,
   1344       CPU_SUBTYPE_PENTIUM_3      = 0x08,
   1345       CPU_SUBTYPE_PENTIUM_3_M    = 0x18,
   1346       CPU_SUBTYPE_PENTIUM_3_XEON = 0x28,
   1347       CPU_SUBTYPE_PENTIUM_M      = 0x09,
   1348       CPU_SUBTYPE_PENTIUM_4      = 0x0a,
   1349       CPU_SUBTYPE_PENTIUM_4_M    = 0x1a,
   1350       CPU_SUBTYPE_ITANIUM        = 0x0b,
   1351       CPU_SUBTYPE_ITANIUM_2      = 0x1b,
   1352       CPU_SUBTYPE_XEON           = 0x0c,
   1353       CPU_SUBTYPE_XEON_MP        = 0x1c,
   1354 
   1355       CPU_SUBTYPE_X86_ALL     = 3,
   1356       CPU_SUBTYPE_X86_64_ALL  = 3,
   1357       CPU_SUBTYPE_X86_ARCH1   = 4,
   1358       CPU_SUBTYPE_X86_64_H    = 8
   1359     };
   1360     static inline int CPU_SUBTYPE_INTEL(int Family, int Model) {
   1361       return Family | (Model << 4);
   1362     }
   1363     static inline int CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST) {
   1364       return ((int)ST) & 0x0f;
   1365     }
   1366     static inline int CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST) {
   1367       return ((int)ST) >> 4;
   1368     }
   1369     enum {
   1370       CPU_SUBTYPE_INTEL_FAMILY_MAX = 15,
   1371       CPU_SUBTYPE_INTEL_MODEL_ALL  = 0
   1372     };
   1373 
   1374     enum CPUSubTypeARM {
   1375       CPU_SUBTYPE_ARM_ALL     = 0,
   1376       CPU_SUBTYPE_ARM_V4T     = 5,
   1377       CPU_SUBTYPE_ARM_V6      = 6,
   1378       CPU_SUBTYPE_ARM_V5      = 7,
   1379       CPU_SUBTYPE_ARM_V5TEJ   = 7,
   1380       CPU_SUBTYPE_ARM_XSCALE  = 8,
   1381       CPU_SUBTYPE_ARM_V7      = 9,
   1382       //  unused  ARM_V7F     = 10,
   1383       CPU_SUBTYPE_ARM_V7S     = 11,
   1384       CPU_SUBTYPE_ARM_V7K     = 12,
   1385       CPU_SUBTYPE_ARM_V6M     = 14,
   1386       CPU_SUBTYPE_ARM_V7M     = 15,
   1387       CPU_SUBTYPE_ARM_V7EM    = 16
   1388     };
   1389 
   1390     enum CPUSubTypeARM64 {
   1391       CPU_SUBTYPE_ARM64_ALL   = 0
   1392     };
   1393 
   1394     enum CPUSubTypeSPARC {
   1395       CPU_SUBTYPE_SPARC_ALL   = 0
   1396     };
   1397 
   1398     enum CPUSubTypePowerPC {
   1399       CPU_SUBTYPE_POWERPC_ALL   = 0,
   1400       CPU_SUBTYPE_POWERPC_601   = 1,
   1401       CPU_SUBTYPE_POWERPC_602   = 2,
   1402       CPU_SUBTYPE_POWERPC_603   = 3,
   1403       CPU_SUBTYPE_POWERPC_603e  = 4,
   1404       CPU_SUBTYPE_POWERPC_603ev = 5,
   1405       CPU_SUBTYPE_POWERPC_604   = 6,
   1406       CPU_SUBTYPE_POWERPC_604e  = 7,
   1407       CPU_SUBTYPE_POWERPC_620   = 8,
   1408       CPU_SUBTYPE_POWERPC_750   = 9,
   1409       CPU_SUBTYPE_POWERPC_7400  = 10,
   1410       CPU_SUBTYPE_POWERPC_7450  = 11,
   1411       CPU_SUBTYPE_POWERPC_970   = 100,
   1412 
   1413       CPU_SUBTYPE_MC980000_ALL  = CPU_SUBTYPE_POWERPC_ALL,
   1414       CPU_SUBTYPE_MC98601       = CPU_SUBTYPE_POWERPC_601
   1415     };
   1416 
   1417     struct x86_thread_state64_t {
   1418       uint64_t rax;
   1419       uint64_t rbx;
   1420       uint64_t rcx;
   1421       uint64_t rdx;
   1422       uint64_t rdi;
   1423       uint64_t rsi;
   1424       uint64_t rbp;
   1425       uint64_t rsp;
   1426       uint64_t r8;
   1427       uint64_t r9;
   1428       uint64_t r10;
   1429       uint64_t r11;
   1430       uint64_t r12;
   1431       uint64_t r13;
   1432       uint64_t r14;
   1433       uint64_t r15;
   1434       uint64_t rip;
   1435       uint64_t rflags;
   1436       uint64_t cs;
   1437       uint64_t fs;
   1438       uint64_t gs;
   1439     };
   1440 
   1441     enum x86_fp_control_precis {
   1442       x86_FP_PREC_24B = 0,
   1443       x86_FP_PREC_53B = 2,
   1444       x86_FP_PREC_64B = 3
   1445     };
   1446 
   1447     enum x86_fp_control_rc {
   1448       x86_FP_RND_NEAR = 0,
   1449       x86_FP_RND_DOWN = 1,
   1450       x86_FP_RND_UP = 2,
   1451       x86_FP_CHOP = 3
   1452     };
   1453 
   1454     struct fp_control_t {
   1455       unsigned short
   1456        invalid :1,
   1457        denorm  :1,
   1458        zdiv    :1,
   1459        ovrfl   :1,
   1460        undfl   :1,
   1461        precis  :1,
   1462                :2,
   1463        pc      :2,
   1464        rc      :2,
   1465                :1,
   1466                :3;
   1467     };
   1468 
   1469     struct fp_status_t {
   1470       unsigned short
   1471         invalid :1,
   1472         denorm  :1,
   1473         zdiv    :1,
   1474         ovrfl   :1,
   1475         undfl   :1,
   1476         precis  :1,
   1477         stkflt  :1,
   1478         errsumm :1,
   1479         c0      :1,
   1480         c1      :1,
   1481         c2      :1,
   1482         tos     :3,
   1483         c3      :1,
   1484         busy    :1;
   1485     };
   1486 
   1487     struct mmst_reg_t {
   1488       char mmst_reg[10];
   1489       char mmst_rsrv[6];
   1490     };
   1491 
   1492     struct xmm_reg_t {
   1493       char xmm_reg[16];
   1494     };
   1495 
   1496     struct x86_float_state64_t {
   1497       int32_t fpu_reserved[2];
   1498       fp_control_t fpu_fcw;
   1499       fp_status_t fpu_fsw;
   1500       uint8_t fpu_ftw;
   1501       uint8_t fpu_rsrv1;
   1502       uint16_t fpu_fop;
   1503       uint32_t fpu_ip;
   1504       uint16_t fpu_cs;
   1505       uint16_t fpu_rsrv2;
   1506       uint32_t fpu_dp;
   1507       uint16_t fpu_ds;
   1508       uint16_t fpu_rsrv3;
   1509       uint32_t fpu_mxcsr;
   1510       uint32_t fpu_mxcsrmask;
   1511       mmst_reg_t fpu_stmm0;
   1512       mmst_reg_t fpu_stmm1;
   1513       mmst_reg_t fpu_stmm2;
   1514       mmst_reg_t fpu_stmm3;
   1515       mmst_reg_t fpu_stmm4;
   1516       mmst_reg_t fpu_stmm5;
   1517       mmst_reg_t fpu_stmm6;
   1518       mmst_reg_t fpu_stmm7;
   1519       xmm_reg_t fpu_xmm0;
   1520       xmm_reg_t fpu_xmm1;
   1521       xmm_reg_t fpu_xmm2;
   1522       xmm_reg_t fpu_xmm3;
   1523       xmm_reg_t fpu_xmm4;
   1524       xmm_reg_t fpu_xmm5;
   1525       xmm_reg_t fpu_xmm6;
   1526       xmm_reg_t fpu_xmm7;
   1527       xmm_reg_t fpu_xmm8;
   1528       xmm_reg_t fpu_xmm9;
   1529       xmm_reg_t fpu_xmm10;
   1530       xmm_reg_t fpu_xmm11;
   1531       xmm_reg_t fpu_xmm12;
   1532       xmm_reg_t fpu_xmm13;
   1533       xmm_reg_t fpu_xmm14;
   1534       xmm_reg_t fpu_xmm15;
   1535       char fpu_rsrv4[6*16];
   1536       uint32_t fpu_reserved1;
   1537     };
   1538 
   1539     struct x86_exception_state64_t {
   1540       uint16_t trapno;
   1541       uint16_t cpu;
   1542       uint32_t err;
   1543       uint64_t faultvaddr;
   1544     };
   1545 
   1546     inline void swapStruct(x86_thread_state64_t &x) {
   1547       sys::swapByteOrder(x.rax);
   1548       sys::swapByteOrder(x.rbx);
   1549       sys::swapByteOrder(x.rcx);
   1550       sys::swapByteOrder(x.rdx);
   1551       sys::swapByteOrder(x.rdi);
   1552       sys::swapByteOrder(x.rsi);
   1553       sys::swapByteOrder(x.rbp);
   1554       sys::swapByteOrder(x.rsp);
   1555       sys::swapByteOrder(x.r8);
   1556       sys::swapByteOrder(x.r9);
   1557       sys::swapByteOrder(x.r10);
   1558       sys::swapByteOrder(x.r11);
   1559       sys::swapByteOrder(x.r12);
   1560       sys::swapByteOrder(x.r13);
   1561       sys::swapByteOrder(x.r14);
   1562       sys::swapByteOrder(x.r15);
   1563       sys::swapByteOrder(x.rip);
   1564       sys::swapByteOrder(x.rflags);
   1565       sys::swapByteOrder(x.cs);
   1566       sys::swapByteOrder(x.fs);
   1567       sys::swapByteOrder(x.gs);
   1568     }
   1569 
   1570     inline void swapStruct(x86_float_state64_t &x) {
   1571       sys::swapByteOrder(x.fpu_reserved[0]);
   1572       sys::swapByteOrder(x.fpu_reserved[1]);
   1573       // TODO swap: fp_control_t fpu_fcw;
   1574       // TODO swap: fp_status_t fpu_fsw;
   1575       sys::swapByteOrder(x.fpu_fop);
   1576       sys::swapByteOrder(x.fpu_ip);
   1577       sys::swapByteOrder(x.fpu_cs);
   1578       sys::swapByteOrder(x.fpu_rsrv2);
   1579       sys::swapByteOrder(x.fpu_dp);
   1580       sys::swapByteOrder(x.fpu_ds);
   1581       sys::swapByteOrder(x.fpu_rsrv3);
   1582       sys::swapByteOrder(x.fpu_mxcsr);
   1583       sys::swapByteOrder(x.fpu_mxcsrmask);
   1584       sys::swapByteOrder(x.fpu_reserved1);
   1585     }
   1586 
   1587     inline void swapStruct(x86_exception_state64_t &x) {
   1588       sys::swapByteOrder(x.trapno);
   1589       sys::swapByteOrder(x.cpu);
   1590       sys::swapByteOrder(x.err);
   1591       sys::swapByteOrder(x.faultvaddr);
   1592     }
   1593 
   1594     struct x86_state_hdr_t {
   1595       uint32_t flavor;
   1596       uint32_t count;
   1597     };
   1598 
   1599     struct x86_thread_state_t {
   1600       x86_state_hdr_t tsh;
   1601       union {
   1602         x86_thread_state64_t ts64;
   1603       } uts;
   1604     };
   1605 
   1606     struct x86_float_state_t {
   1607       x86_state_hdr_t fsh;
   1608       union {
   1609         x86_float_state64_t fs64;
   1610       } ufs;
   1611     };
   1612 
   1613     struct x86_exception_state_t {
   1614       x86_state_hdr_t esh;
   1615       union {
   1616         x86_exception_state64_t es64;
   1617       } ues;
   1618     };
   1619 
   1620     inline void swapStruct(x86_state_hdr_t &x) {
   1621       sys::swapByteOrder(x.flavor);
   1622       sys::swapByteOrder(x.count);
   1623     }
   1624 
   1625     enum X86ThreadFlavors {
   1626       x86_THREAD_STATE32    = 1,
   1627       x86_FLOAT_STATE32     = 2,
   1628       x86_EXCEPTION_STATE32 = 3,
   1629       x86_THREAD_STATE64    = 4,
   1630       x86_FLOAT_STATE64     = 5,
   1631       x86_EXCEPTION_STATE64 = 6,
   1632       x86_THREAD_STATE      = 7,
   1633       x86_FLOAT_STATE       = 8,
   1634       x86_EXCEPTION_STATE   = 9,
   1635       x86_DEBUG_STATE32     = 10,
   1636       x86_DEBUG_STATE64     = 11,
   1637       x86_DEBUG_STATE       = 12
   1638     };
   1639 
   1640     inline void swapStruct(x86_thread_state_t &x) {
   1641       swapStruct(x.tsh);
   1642       if (x.tsh.flavor == x86_THREAD_STATE64)
   1643         swapStruct(x.uts.ts64);
   1644     }
   1645 
   1646     inline void swapStruct(x86_float_state_t &x) {
   1647       swapStruct(x.fsh);
   1648       if (x.fsh.flavor == x86_FLOAT_STATE64)
   1649         swapStruct(x.ufs.fs64);
   1650     }
   1651 
   1652     inline void swapStruct(x86_exception_state_t &x) {
   1653       swapStruct(x.esh);
   1654       if (x.esh.flavor == x86_EXCEPTION_STATE64)
   1655         swapStruct(x.ues.es64);
   1656     }
   1657 
   1658     const uint32_t x86_THREAD_STATE64_COUNT =
   1659       sizeof(x86_thread_state64_t) / sizeof(uint32_t);
   1660     const uint32_t x86_FLOAT_STATE64_COUNT =
   1661       sizeof(x86_float_state64_t) / sizeof(uint32_t);
   1662     const uint32_t x86_EXCEPTION_STATE64_COUNT =
   1663       sizeof(x86_exception_state64_t) / sizeof(uint32_t);
   1664 
   1665     const uint32_t x86_THREAD_STATE_COUNT =
   1666       sizeof(x86_thread_state_t) / sizeof(uint32_t);
   1667     const uint32_t x86_FLOAT_STATE_COUNT =
   1668       sizeof(x86_float_state_t) / sizeof(uint32_t);
   1669     const uint32_t x86_EXCEPTION_STATE_COUNT =
   1670       sizeof(x86_exception_state_t) / sizeof(uint32_t);
   1671 
   1672   } // end namespace MachO
   1673 } // end namespace llvm
   1674 
   1675 #endif
   1676