include/llvm/Support/MachO.h

   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/DataTypes.h"
  18
  19 // NOTE: The enums in this file are intentially named to be different than those
  20 // in the headers in /usr/include/mach (on darwin systems) to avoid conflicts
  21 // with those macros.
  22 namespace llvm {
  23   namespace MachO {
  24     // Enums from <mach-o/loader.h>
  25     enum {
  26       // Constants for the "magic" field in llvm::MachO::mach_header and
  27       // llvm::MachO::mach_header_64
  28       HeaderMagic32         = 0xFEEDFACEu, // MH_MAGIC
  29       HeaderMagic32Swapped  = 0xCEFAEDFEu, // MH_CIGAM
  30       HeaderMagic64         = 0xFEEDFACFu, // MH_MAGIC_64
  31       HeaderMagic64Swapped  = 0xCFFAEDFEu, // MH_CIGAM_64
  32       UniversalMagic        = 0xCAFEBABEu, // FAT_MAGIC
  33       UniversalMagicSwapped = 0xBEBAFECAu, // FAT_CIGAM
  34
  35       // Constants for the "filetype" field in llvm::MachO::mach_header and
  36       // llvm::MachO::mach_header_64
  37       HeaderFileTypeObject              = 0x1u, // MH_OBJECT
  38       HeaderFileTypeExecutable          = 0x2u, // MH_EXECUTE
  39       HeaderFileTypeFixedVMShlib        = 0x3u, // MH_FVMLIB
  40       HeaderFileTypeCore                = 0x4u, // MH_CORE
  41       HeaderFileTypePreloadedExecutable = 0x5u, // MH_PRELOAD
  42       HeaderFileTypeDynamicShlib        = 0x6u, // MH_DYLIB
  43       HeaderFileTypeDynamicLinkEditor   = 0x7u, // MH_DYLINKER
  44       HeaderFileTypeBundle              = 0x8u, // MH_BUNDLE
  45       HeaderFileTypeDynamicShlibStub    = 0x9u, // MH_DYLIB_STUB
  46       HeaderFileTypeDSYM                = 0xAu, // MH_DSYM
  47       HeaderFileTypeKextBundle          = 0xBu, // MH_KEXT_BUNDLE
  48
  49       // Constant bits for the "flags" field in llvm::MachO::mach_header and
  50       // llvm::MachO::mach_header_64
  51       HeaderFlagBitNoUndefinedSymbols     = 0x00000001u, // MH_NOUNDEFS
  52       HeaderFlagBitIsIncrementalLinkObject= 0x00000002u, // MH_INCRLINK
  53       HeaderFlagBitIsDynamicLinkObject    = 0x00000004u, // MH_DYLDLINK
  54       HeaderFlagBitBindAtLoad             = 0x00000008u, // MH_BINDATLOAD
  55       HeaderFlagBitPrebound               = 0x00000010u, // MH_PREBOUND
  56       HeaderFlagBitSplitSegments          = 0x00000020u, // MH_SPLIT_SEGS
  57       HeaderFlagBitLazyInit               = 0x00000040u, // MH_LAZY_INIT
  58       HeaderFlagBitTwoLevelNamespace      = 0x00000080u, // MH_TWOLEVEL
  59       HeaderFlagBitForceFlatNamespace     = 0x00000100u, // MH_FORCE_FLAT
  60       HeaderFlagBitNoMultipleDefintions   = 0x00000200u, // MH_NOMULTIDEFS
  61       HeaderFlagBitNoFixPrebinding        = 0x00000400u, // MH_NOFIXPREBINDING
  62       HeaderFlagBitPrebindable            = 0x00000800u, // MH_PREBINDABLE
  63       HeaderFlagBitAllModulesBound        = 0x00001000u, // MH_ALLMODSBOUND
  64       HeaderFlagBitSubsectionsViaSymbols  = 0x00002000u, // MH_SUBSECTIONS_VIA_SYMBOLS
  65       HeaderFlagBitCanonical              = 0x00004000u, // MH_CANONICAL
  66       HeaderFlagBitWeakDefines            = 0x00008000u, // MH_WEAK_DEFINES
  67       HeaderFlagBitBindsToWeak            = 0x00010000u, // MH_BINDS_TO_WEAK
  68       HeaderFlagBitAllowStackExecution    = 0x00020000u, // MH_ALLOW_STACK_EXECUTION
  69       HeaderFlagBitRootSafe               = 0x00040000u, // MH_ROOT_SAFE
  70       HeaderFlagBitSetUIDSafe             = 0x00080000u, // MH_SETUID_SAFE
  71       HeaderFlagBitNoReexportedDylibs     = 0x00100000u, // MH_NO_REEXPORTED_DYLIBS
  72       HeaderFlagBitPIE                    = 0x00200000u, // MH_PIE
  73       HeaderFlagBitDeadStrippableDylib    = 0x00400000u, // MH_DEAD_STRIPPABLE_DYLIB
  74
  75       // Constants for the "cmd" field in llvm::MachO::load_command
  76       LoadCommandDynamicLinkerRequired    = 0x80000000u, // LC_REQ_DYLD
  77       LoadCommandSegment32                = 0x00000001u, // LC_SEGMENT
  78       LoadCommandSymtab                   = 0x00000002u, // LC_SYMTAB
  79       LoadCommandSymSeg                   = 0x00000003u, // LC_SYMSEG
  80       LoadCommandThread                   = 0x00000004u, // LC_THREAD
  81       LoadCommandUnixThread               = 0x00000005u, // LC_UNIXTHREAD
  82       LoadCommandFixedVMShlibLoad         = 0x00000006u, // LC_LOADFVMLIB
  83       LoadCommandFixedVMShlibIdent        = 0x00000007u, // LC_IDFVMLIB
  84       LoadCommandIdent                    = 0x00000008u, // LC_IDENT
  85       LoadCommandFixedVMFileInclusion     = 0x00000009u, // LC_FVMFILE
  86       LoadCommandPrePage                  = 0x0000000Au, // LC_PREPAGE
  87       LoadCommandDynamicSymtabInfo        = 0x0000000Bu, // LC_DYSYMTAB
  88       LoadCommandDylibLoad                = 0x0000000Cu, // LC_LOAD_DYLIB
  89       LoadCommandDylibIdent               = 0x0000000Du, // LC_ID_DYLIB
  90       LoadCommandDynamicLinkerLoad        = 0x0000000Eu, // LC_LOAD_DYLINKER
  91       LoadCommandDynamicLinkerIdent       = 0x0000000Fu, // LC_ID_DYLINKER
  92       LoadCommandDylibPrebound            = 0x00000010u, // LC_PREBOUND_DYLIB
  93       LoadCommandRoutines32               = 0x00000011u, // LC_ROUTINES
  94       LoadCommandSubFramework             = 0x00000012u, // LC_SUB_FRAMEWORK
  95       LoadCommandSubUmbrella              = 0x00000013u, // LC_SUB_UMBRELLA
  96       LoadCommandSubClient                = 0x00000014u, // LC_SUB_CLIENT
  97       LoadCommandSubLibrary               = 0x00000015u, // LC_SUB_LIBRARY
  98       LoadCommandTwoLevelHints            = 0x00000016u, // LC_TWOLEVEL_HINTS
  99       LoadCommandPreBindChecksum          = 0x00000017u, // LC_PREBIND_CKSUM
 100       LoadCommandDylibLoadWeak            = 0x80000018u, // LC_LOAD_WEAK_DYLIB
 101       LoadCommandSegment64                = 0x00000019u, // LC_SEGMENT_64
 102       LoadCommandRoutines64               = 0x0000001Au, // LC_ROUTINES_64
 103       LoadCommandUUID                     = 0x0000001Bu, // LC_UUID
 104       LoadCommandRunpath                  = 0x8000001Cu, // LC_RPATH
 105       LoadCommandCodeSignature            = 0x0000001Du, // LC_CODE_SIGNATURE
 106       LoadCommandSegmentSplitInfo         = 0x0000001Eu, // LC_SEGMENT_SPLIT_INFO
 107       LoadCommandDylibReexport            = 0x8000001Fu, // LC_REEXPORT_DYLIB
 108       LoadCommandDylibLazyLoad            = 0x00000020u, // LC_LAZY_LOAD_DYLIB
 109       LoadCommandEncryptionInfo           = 0x00000021u, // LC_ENCRYPTION_INFO
 110       LoadCommandDynamicLinkerInfo        = 0x00000022u, // LC_DYLD_INFO
 111       LoadCommandDynamicLinkerInfoOnly    = 0x80000022u, // LC_DYLD_INFO_ONLY
 112       LoadCommandDylibLoadUpward          = 0x80000023u, // LC_LOAD_UPWARD_DYLIB
 113       LoadCommandVersionMinMacOSX         = 0x00000024u, // LC_VERSION_MIN_MACOSX
 114       LoadCommandVersionMinIPhoneOS       = 0x00000025u, // LC_VERSION_MIN_IPHONEOS
 115       LoadCommandFunctionStarts           = 0x00000026u, // LC_FUNCTION_STARTS
 116       LoadCommandDyldEnvironment          = 0x00000027u, // LC_DYLD_ENVIRONMENT
 117
 118       // Constant bits for the "flags" field in llvm::MachO::segment_command
 119       SegmentCommandFlagBitHighVM             = 0x1u, // SG_HIGHVM
 120       SegmentCommandFlagBitFixedVMLibrary     = 0x2u, // SG_FVMLIB
 121       SegmentCommandFlagBitNoRelocations      = 0x4u, // SG_NORELOC
 122       SegmentCommandFlagBitProtectedVersion1  = 0x8u, // SG_PROTECTED_VERSION_1
 123
 124
 125       // Constant masks for the "flags" field in llvm::MachO::section and
 126       // llvm::MachO::section_64
 127       SectionFlagMaskSectionType      = 0x000000ffu, // SECTION_TYPE
 128       SectionFlagMaskAllAttributes    = 0xffffff00u, // SECTION_ATTRIBUTES
 129       SectionFlagMaskUserAttributes   = 0xff000000u, // SECTION_ATTRIBUTES_USR
 130       SectionFlagMaskSystemAttributes = 0x00ffff00u, // SECTION_ATTRIBUTES_SYS
 131
 132       // Constant masks for the "flags[7:0]" field in llvm::MachO::section and
 133       // llvm::MachO::section_64 (mask "flags" with SECTION_TYPE)
 134       SectionTypeRegular                    = 0x00u, // S_REGULAR
 135       SectionTypeZeroFill                   = 0x01u, // S_ZEROFILL
 136       SectionTypeCStringLiterals            = 0x02u, // S_CSTRING_LITERALS
 137       SectionType4ByteLiterals              = 0x03u, // S_4BYTE_LITERALS
 138       SectionType8ByteLiterals              = 0x04u, // S_8BYTE_LITERALS
 139       SectionTypeLiteralPointers            = 0x05u, // S_LITERAL_POINTERS
 140       SectionTypeNonLazySymbolPointers      = 0x06u, // S_NON_LAZY_SYMBOL_POINTERS
 141       SectionTypeLazySymbolPointers         = 0x07u, // S_LAZY_SYMBOL_POINTERS
 142       SectionTypeSymbolStubs                = 0x08u, // S_SYMBOL_STUBS
 143       SectionTypeModuleInitFunctionPointers = 0x09u, // S_MOD_INIT_FUNC_POINTERS
 144       SectionTypeModuleTermFunctionPointers = 0x0au, // S_MOD_TERM_FUNC_POINTERS
 145       SectionTypeCoalesced                  = 0x0bu, // S_COALESCED
 146       SectionTypeZeroFillLarge              = 0x0cu, // S_GB_ZEROFILL
 147       SectionTypeInterposing                = 0x0du, // S_INTERPOSING
 148       SectionType16ByteLiterals             = 0x0eu, // S_16BYTE_LITERALS
 149       SectionTypeDTraceObjectFormat         = 0x0fu, // S_DTRACE_DOF
 150       SectionTypeLazyDylibSymbolPointers    = 0x10u, // S_LAZY_DYLIB_SYMBOL_POINTERS
 151
 152       // Constant masks for the "flags[31:24]" field in llvm::MachO::section and
 153       // llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_USR)
 154       SectionAttrUserPureInstructions       = 0x80000000u, // S_ATTR_PURE_INSTRUCTIONS
 155       SectionAttrUserNoTableOfContents      = 0x40000000u, // S_ATTR_NO_TOC
 156       SectionAttrUserCanStripStaticSymbols  = 0x20000000u, // S_ATTR_STRIP_STATIC_SYMS
 157       SectionAttrUserNoDeadStrip            = 0x10000000u, // S_ATTR_NO_DEAD_STRIP
 158       SectionAttrUserLiveSupport            = 0x08000000u, // S_ATTR_LIVE_SUPPORT
 159       SectionAttrUserSelfModifyingCode      = 0x04000000u, // S_ATTR_SELF_MODIFYING_CODE
 160       SectionAttrUserDebug                  = 0x02000000u, // S_ATTR_DEBUG
 161
 162       // Constant masks for the "flags[23:8]" field in llvm::MachO::section and
 163       // llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_SYS)
 164       SectionAttrSytemSomeInstructions      = 0x00000400u, // S_ATTR_SOME_INSTRUCTIONS
 165       SectionAttrSytemHasExternalRelocations= 0x00000200u, // S_ATTR_EXT_RELOC
 166       SectionAttrSytemHasLocalRelocations   = 0x00000100u, // S_ATTR_LOC_RELOC
 167
 168       IndirectSymbolLocal                   = 0x80000000u, // INDIRECT_SYMBOL_LOCAL
 169       IndirectSymbolAbsolute                = 0x40000000u, // INDIRECT_SYMBOL_ABS
 170
 171       RebaseTypePointer                     = 1u, // REBASE_TYPE_POINTER
 172       RebaseTypeTextAbsolute32              = 2u, // REBASE_TYPE_TEXT_ABSOLUTE32
 173       RebaseTypeTextPCRelative32            = 3u, // REBASE_TYPE_TEXT_PCREL32
 174
 175       RebaseOpcodeMask                          = 0xF0u, // REBASE_OPCODE_MASK
 176       RebaseImmediateMask                       = 0x0Fu, // REBASE_IMMEDIATE_MASK
 177       RebaseOpcodeDone                          = 0x00u, // REBASE_OPCODE_DONE
 178       RebaseOpcodeSetTypeImmediate              = 0x10u, // REBASE_OPCODE_SET_TYPE_IMM
 179       RebaseOpcodeSetSegmentAndOffsetULEB       = 0x20u, // REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
 180       RebaseOpcodeAddAddressULEB                = 0x30u, // REBASE_OPCODE_ADD_ADDR_ULEB
 181       RebaseOpcodeAddAddressImmediateScaled     = 0x40u, // REBASE_OPCODE_ADD_ADDR_IMM_SCALED
 182       RebaseOpcodeDoRebaseImmediateTimes        = 0x50u, // REBASE_OPCODE_DO_REBASE_IMM_TIMES
 183       RebaseOpcodeDoRebaseULEBTimes             = 0x60u, // REBASE_OPCODE_DO_REBASE_ULEB_TIMES
 184       RebaseOpcodeDoRebaseAddAddressULEB        = 0x70u, // REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB
 185       RebaseOpcodeDoRebaseULEBTimesSkippingULEB = 0x80u, // REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB
 186
 187
 188       BindTypePointer           = 1u, // BIND_TYPE_POINTER
 189       BindTypeTextAbsolute32    = 2u, // BIND_TYPE_TEXT_ABSOLUTE32
 190       BindTypeTextPCRelative32  = 3u, // BIND_TYPE_TEXT_PCREL32
 191
 192       BindSpecialDylibSelf            =  0u, // BIND_SPECIAL_DYLIB_SELF
 193       BindSpecialDylibMainExecutable  = -1u, // BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE
 194       BindSpecialDylibFlatLookup      = -2u, // BIND_SPECIAL_DYLIB_FLAT_LOOKUP
 195
 196       BindSymbolFlagsWeakImport         = 0x1u, // BIND_SYMBOL_FLAGS_WEAK_IMPORT
 197       BindSymbolFlagsNonWeakDefinition  = 0x8u, // BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION
 198
 199       BindOpcodeMask                            = 0xF0u, // BIND_OPCODE_MASK
 200       BindImmediateMask                         = 0x0Fu, // BIND_IMMEDIATE_MASK
 201       BindOpcodeDone                            = 0x00u, // BIND_OPCODE_DONE
 202       BindOpcodeSetDylibOrdinalImmediate        = 0x10u, // BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
 203       BindOpcodeSetDylibOrdinalULEB             = 0x20u, // BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB
 204       BindOpcodeSetDylibSpecialImmediate        = 0x30u, // BIND_OPCODE_SET_DYLIB_SPECIAL_IMM
 205       BindOpcodeSetSymbolTrailingFlagsImmediate = 0x40u, // BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
 206       BindOpcodeSetTypeImmediate                = 0x50u, // BIND_OPCODE_SET_TYPE_IMM
 207       BindOpcodeSetAppendSLEB                   = 0x60u, // BIND_OPCODE_SET_ADDEND_SLEB
 208       BindOpcodeSetSegmentAndOffsetULEB         = 0x70u, // BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
 209       BindOpcodeAddAddressULEB                  = 0x80u, // BIND_OPCODE_ADD_ADDR_ULEB
 210       BindOpcodeDoBind                          = 0x90u, // BIND_OPCODE_DO_BIND
 211       BindOpcodeDoBindAddAddressULEB            = 0xA0u, // BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB
 212       BindOpcodeDoBindAddAddressImmediateScaled = 0xB0u, // BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED
 213       BindOpcodeDoBindULEBTimesSkippingULEB     = 0xC0u, // BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB
 214
 215       ExportSymbolFlagsKindMask           = 0x03u, // EXPORT_SYMBOL_FLAGS_KIND_MASK
 216       ExportSymbolFlagsKindRegular        = 0x00u, // EXPORT_SYMBOL_FLAGS_KIND_REGULAR
 217       ExportSymbolFlagsKindThreadLocal    = 0x01u, // EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL
 218       ExportSymbolFlagsWeakDefinition     = 0x04u, // EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION
 219       ExportSymbolFlagsIndirectDefinition = 0x08u, // EXPORT_SYMBOL_FLAGS_INDIRECT_DEFINITION
 220       ExportSymbolFlagsHasSpecializations = 0x10u, // EXPORT_SYMBOL_FLAGS_HAS_SPECIALIZATIONS
 221
 222
 223       // Constant masks for the "n_type" field in llvm::MachO::nlist and
 224       // llvm::MachO::nlist_64
 225       NlistMaskStab             = 0xe0, // N_STAB
 226       NlistMaskPrivateExternal  = 0x10, // N_PEXT
 227       NlistMaskType             = 0x0e, // N_TYPE
 228       NlistMaskExternal         = 0x01, // N_EXT
 229
 230       // Constants for the "n_type & N_TYPE" llvm::MachO::nlist and
 231       // llvm::MachO::nlist_64
 232       NListTypeUndefined          = 0x0u, // N_UNDF
 233       NListTypeAbsolute           = 0x2u, // N_ABS
 234       NListTypeSection            = 0xeu, // N_SECT
 235       NListTypePreboundUndefined  = 0xcu, // N_PBUD
 236       NListTypeIndirect           = 0xau, // N_INDR
 237
 238       // Constant masks for the "n_sect" field in llvm::MachO::nlist and
 239       // llvm::MachO::nlist_64
 240       NListSectionNoSection     = 0u, // NO_SECT
 241       NListSectionMaxSection    = 0xffu, // MAX_SECT
 242
 243       NListDescWeakRef          = 0x40u,
 244       NListDescWeakDef          = 0x80u,
 245
 246       // Constant values for the "n_type" field in llvm::MachO::nlist and
 247       // llvm::MachO::nlist_64 when "(n_type & NlistMaskStab) != 0"
 248       StabGlobalSymbol          = 0x20u,  // N_GSYM
 249       StabFunctionName          = 0x22u,  // N_FNAME
 250       StabFunction              = 0x24u,  // N_FUN
 251       StabStaticSymbol          = 0x26u,  // N_STSYM
 252       StabLocalCommon           = 0x28u,  // N_LCSYM
 253       StabBeginSymbol           = 0x2Eu,  // N_BNSYM
 254       StabSourceFileOptions     = 0x3Cu,  // N_OPT
 255       StabRegisterSymbol        = 0x40u,  // N_RSYM
 256       StabSourceLine            = 0x44u,  // N_SLINE
 257       StabEndSymbol             = 0x4Eu,  // N_ENSYM
 258       StabStructureType         = 0x60u,  // N_SSYM
 259       StabSourceFileName        = 0x64u,  // N_SO
 260       StabObjectFileName        = 0x66u,  // N_OSO
 261       StabLocalSymbol           = 0x80u,  // N_LSYM
 262       StabBeginIncludeFileName  = 0x82u,  // N_BINCL
 263       StabIncludeFileName       = 0x84u,  // N_SOL
 264       StabCompilerParameters    = 0x86u,  // N_PARAMS
 265       StabCompilerVersion       = 0x88u,  // N_VERSION
 266       StabCompilerOptLevel      = 0x8Au,  // N_OLEVEL
 267       StabParameter             = 0xA0u,  // N_PSYM
 268       StabEndIncludeFile        = 0xA2u,  // N_EINCL
 269       StabAlternateEntry        = 0xA4u,  // N_ENTRY
 270       StabLeftBracket           = 0xC0u,  // N_LBRAC
 271       StabDeletedIncludeFile    = 0xC2u,  // N_EXCL
 272       StabRightBracket          = 0xE0u,  // N_RBRAC
 273       StabBeginCommon           = 0xE2u,  // N_BCOMM
 274       StabEndCommon             = 0xE4u,  // N_ECOMM
 275       StabEndCommonLocal        = 0xE8u,  // N_ECOML
 276       StabLength                = 0xFEu   // N_LENG
 277
 278     };
 279
 280     // Structs from <mach-o/loader.h>
 281
 282     struct mach_header {
 283       uint32_t magic;
 284       uint32_t cputype;
 285       uint32_t cpusubtype;
 286       uint32_t filetype;
 287       uint32_t ncmds;
 288       uint32_t sizeofcmds;
 289       uint32_t flags;
 290     };
 291
 292     struct mach_header_64 {
 293       uint32_t magic;
 294       uint32_t cputype;
 295       uint32_t cpusubtype;
 296       uint32_t filetype;
 297       uint32_t ncmds;
 298       uint32_t sizeofcmds;
 299       uint32_t flags;
 300       uint32_t reserved;
 301     };
 302
 303     struct load_command {
 304       uint32_t cmd;
 305       uint32_t cmdsize;
 306     };
 307
 308     struct segment_command {
 309       uint32_t cmd;
 310       uint32_t cmdsize;
 311       char segname[16];
 312       uint32_t vmaddr;
 313       uint32_t vmsize;
 314       uint32_t fileoff;
 315       uint32_t filesize;
 316       uint32_t maxprot;
 317       uint32_t initprot;
 318       uint32_t nsects;
 319       uint32_t flags;
 320     };
 321
 322     struct segment_command_64 {
 323       uint32_t cmd;
 324       uint32_t cmdsize;
 325       char segname[16];
 326       uint64_t vmaddr;
 327       uint64_t vmsize;
 328       uint64_t fileoff;
 329       uint64_t filesize;
 330       uint32_t maxprot;
 331       uint32_t initprot;
 332       uint32_t nsects;
 333       uint32_t flags;
 334     };
 335
 336     struct section {
 337       char sectname[16];
 338       char segname[16];
 339       uint32_t addr;
 340       uint32_t size;
 341       uint32_t offset;
 342       uint32_t align;
 343       uint32_t reloff;
 344       uint32_t nreloc;
 345       uint32_t flags;
 346       uint32_t reserved1;
 347       uint32_t reserved2;
 348     };
 349
 350     struct section_64 {
 351       char sectname[16];
 352       char segname[16];
 353       uint64_t addr;
 354       uint64_t size;
 355       uint32_t offset;
 356       uint32_t align;
 357       uint32_t reloff;
 358       uint32_t nreloc;
 359       uint32_t flags;
 360       uint32_t reserved1;
 361       uint32_t reserved2;
 362       uint32_t reserved3;
 363     };
 364
 365     struct fvmlib {
 366       uint32_t name;
 367       uint32_t minor_version;
 368       uint32_t header_addr;
 369     };
 370
 371     struct fvmlib_command {
 372       uint32_t  cmd;
 373       uint32_t cmdsize;
 374       struct fvmlib fvmlib;
 375     };
 376
 377     struct dylib {
 378       uint32_t name;
 379       uint32_t timestamp;
 380       uint32_t current_version;
 381       uint32_t compatibility_version;
 382     };
 383
 384     struct dylib_command {
 385       uint32_t cmd;
 386       uint32_t cmdsize;
 387       struct dylib dylib;
 388     };
 389
 390     struct sub_framework_command {
 391       uint32_t cmd;
 392       uint32_t cmdsize;
 393       uint32_t umbrella;
 394     };
 395
 396     struct sub_client_command {
 397       uint32_t cmd;
 398       uint32_t cmdsize;
 399       uint32_t client;
 400     };
 401
 402     struct sub_umbrella_command {
 403       uint32_t cmd;
 404       uint32_t cmdsize;
 405       uint32_t sub_umbrella;
 406     };
 407
 408     struct sub_library_command {
 409       uint32_t cmd;
 410       uint32_t cmdsize;
 411       uint32_t sub_library;
 412     };
 413
 414     struct prebound_dylib_command {
 415       uint32_t cmd;
 416       uint32_t cmdsize;
 417       uint32_t name;
 418       uint32_t nmodules;
 419       uint32_t linked_modules;
 420     };
 421
 422     struct dylinker_command {
 423       uint32_t cmd;
 424       uint32_t cmdsize;
 425       uint32_t name;
 426     };
 427
 428     struct thread_command {
 429       uint32_t cmd;
 430       uint32_t cmdsize;
 431     };
 432
 433     struct routines_command {
 434       uint32_t cmd;
 435       uint32_t cmdsize;
 436       uint32_t init_address;
 437       uint32_t init_module;
 438       uint32_t reserved1;
 439       uint32_t reserved2;
 440       uint32_t reserved3;
 441       uint32_t reserved4;
 442       uint32_t reserved5;
 443       uint32_t reserved6;
 444     };
 445
 446     struct routines_command_64 {
 447       uint32_t cmd;
 448       uint32_t cmdsize;
 449       uint64_t init_address;
 450       uint64_t init_module;
 451       uint64_t reserved1;
 452       uint64_t reserved2;
 453       uint64_t reserved3;
 454       uint64_t reserved4;
 455       uint64_t reserved5;
 456       uint64_t reserved6;
 457     };
 458
 459     struct symtab_command {
 460       uint32_t cmd;
 461       uint32_t cmdsize;
 462       uint32_t symoff;
 463       uint32_t nsyms;
 464       uint32_t stroff;
 465       uint32_t strsize;
 466     };
 467
 468     struct dysymtab_command {
 469       uint32_t cmd;
 470       uint32_t cmdsize;
 471       uint32_t ilocalsym;
 472       uint32_t nlocalsym;
 473       uint32_t iextdefsym;
 474       uint32_t nextdefsym;
 475       uint32_t iundefsym;
 476       uint32_t nundefsym;
 477       uint32_t tocoff;
 478       uint32_t ntoc;
 479       uint32_t modtaboff;
 480       uint32_t nmodtab;
 481       uint32_t extrefsymoff;
 482       uint32_t nextrefsyms;
 483       uint32_t indirectsymoff;
 484       uint32_t nindirectsyms;
 485       uint32_t extreloff;
 486       uint32_t nextrel;
 487       uint32_t locreloff;
 488       uint32_t nlocrel;
 489     };
 490
 491     struct dylib_table_of_contents {
 492       uint32_t symbol_index;
 493       uint32_t module_index;
 494     };
 495
 496     struct dylib_module {
 497       uint32_t module_name;
 498       uint32_t iextdefsym;
 499       uint32_t nextdefsym;
 500       uint32_t irefsym;
 501       uint32_t nrefsym;
 502       uint32_t ilocalsym;
 503       uint32_t nlocalsym;
 504       uint32_t iextrel;
 505       uint32_t nextrel;
 506       uint32_t iinit_iterm;
 507       uint32_t ninit_nterm;
 508       uint32_t objc_module_info_addr;
 509       uint32_t objc_module_info_size;
 510     };
 511
 512     struct dylib_module_64 {
 513       uint32_t module_name;
 514       uint32_t iextdefsym;
 515       uint32_t nextdefsym;
 516       uint32_t irefsym;
 517       uint32_t nrefsym;
 518       uint32_t ilocalsym;
 519       uint32_t nlocalsym;
 520       uint32_t iextrel;
 521       uint32_t nextrel;
 522       uint32_t iinit_iterm;
 523       uint32_t ninit_nterm;
 524       uint32_t objc_module_info_size;
 525       uint64_t objc_module_info_addr;
 526     };
 527
 528     struct dylib_reference {
 529       uint32_t isym:24,
 530                flags:8;
 531     };
 532
 533
 534     struct twolevel_hints_command {
 535       uint32_t cmd;
 536       uint32_t cmdsize;
 537       uint32_t offset;
 538       uint32_t nhints;
 539     };
 540
 541     struct twolevel_hint {
 542       uint32_t isub_image:8,
 543                itoc:24;
 544     };
 545
 546     struct prebind_cksum_command {
 547       uint32_t cmd;
 548       uint32_t cmdsize;
 549       uint32_t cksum;
 550     };
 551
 552     struct uuid_command {
 553       uint32_t cmd;
 554       uint32_t cmdsize;
 555       uint8_t uuid[16];
 556     };
 557
 558     struct rpath_command {
 559       uint32_t cmd;
 560       uint32_t cmdsize;
 561       uint32_t path;
 562     };
 563
 564     struct linkedit_data_command {
 565       uint32_t cmd;
 566       uint32_t cmdsize;
 567       uint32_t dataoff;
 568       uint32_t datasize;
 569     };
 570
 571     struct encryption_info_command {
 572       uint32_t cmd;
 573       uint32_t cmdsize;
 574       uint32_t cryptoff;
 575       uint32_t cryptsize;
 576       uint32_t cryptid;
 577     };
 578
 579     struct version_min_command {
 580       uint32_t cmd;
 581       uint32_t cmdsize;
 582       uint32_t version;
 583       uint32_t reserved;
 584     };
 585
 586     struct dyld_info_command {
 587       uint32_t cmd;
 588       uint32_t cmdsize;
 589       uint32_t rebase_off;
 590       uint32_t rebase_size;
 591       uint32_t bind_off;
 592       uint32_t bind_size;
 593       uint32_t weak_bind_off;
 594       uint32_t weak_bind_size;
 595       uint32_t lazy_bind_off;
 596       uint32_t lazy_bind_size;
 597       uint32_t export_off;
 598       uint32_t export_size;
 599     };
 600
 601     struct symseg_command {
 602       uint32_t cmd;
 603       uint32_t cmdsize;
 604       uint32_t offset;
 605       uint32_t size;
 606     };
 607
 608     struct ident_command {
 609       uint32_t cmd;
 610       uint32_t cmdsize;
 611     };
 612
 613     struct fvmfile_command {
 614       uint32_t cmd;
 615       uint32_t cmdsize;
 616       uint32_t name;
 617       uint32_t header_addr;
 618     };
 619
 620
 621     // Structs from <mach-o/fat.h>
 622     struct fat_header {
 623       uint32_t magic;
 624       uint32_t nfat_arch;
 625     };
 626
 627     struct fat_arch {
 628       uint32_t cputype;
 629       uint32_t cpusubtype;
 630       uint32_t offset;
 631       uint32_t size;
 632       uint32_t align;
 633     };
 634
 635     // Structs from <mach-o/fat.h>
 636     struct nlist {
 637       uint32_t n_strx;
 638       uint8_t n_type;
 639       uint8_t n_sect;
 640       int16_t n_desc;
 641       uint32_t n_value;
 642     };
 643
 644     struct nlist_64 {
 645       uint32_t n_strx;
 646       uint8_t n_type;
 647       uint8_t n_sect;
 648       uint16_t n_desc;
 649       uint64_t n_value;
 650     };
 651
 652     // Get/Set functions from <mach-o/nlist.h>
 653
 654     static inline uint16_t GET_LIBRARY_ORDINAL(uint16_t n_desc)
 655     {
 656       return (((n_desc) >> 8u) & 0xffu);
 657     }
 658
 659     static inline void SET_LIBRARY_ORDINAL(uint16_t &n_desc, uint8_t ordinal)
 660     {
 661       n_desc = (((n_desc) & 0x00ff) | (((ordinal) & 0xff) << 8));
 662     }
 663
 664     static inline uint8_t GET_COMM_ALIGN (uint16_t n_desc)
 665     {
 666       return (n_desc >> 8u) & 0x0fu;
 667     }
 668
 669     static inline void SET_COMM_ALIGN (uint16_t &n_desc, uint8_t align)
 670     {
 671       n_desc = ((n_desc & 0xf0ffu) | ((align & 0x0fu) << 8u));
 672     }
 673
 674     // Enums from <mach/machine.h>
 675     enum {
 676       // Capability bits used in the definition of cpu_type.
 677       CPUArchMask = 0xff000000,   // Mask for architecture bits
 678       CPUArchABI64 = 0x01000000,  // 64 bit ABI
 679
 680       // Constants for the cputype field.
 681       CPUTypeI386      = 7,
 682       CPUTypeX86_64    = CPUTypeI386 | CPUArchABI64,
 683       CPUTypeARM       = 12,
 684       CPUTypeSPARC     = 14,
 685       CPUTypePowerPC   = 18,
 686       CPUTypePowerPC64 = CPUTypePowerPC | CPUArchABI64,
 687
 688
 689       // Constants for the cpusubtype field.
 690
 691       // X86
 692       CPUSubType_I386_ALL    = 3,
 693       CPUSubType_X86_64_ALL  = 3,
 694
 695       // ARM
 696       CPUSubType_ARM_ALL     = 0,
 697       CPUSubType_ARM_V4T     = 5,
 698       CPUSubType_ARM_V5      = 7,
 699       CPUSubType_ARM_V6      = 6,
 700       CPUSubType_ARM_V7      = 9,
 701
 702       // PowerPC
 703       CPUSubType_POWERPC_ALL = 0,
 704
 705       CPUSubType_SPARC_ALL   = 0
 706     };
 707   } // end namespace MachO
 708 } // end namespace llvm
 709
 710 #endif