src/ld/HeaderAndLoadCommands.hpp

   1 /* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-*
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  24
  25 #ifndef __HEADER_LOAD_COMMANDS_HPP__
  26 #define __HEADER_LOAD_COMMANDS_HPP__
  27
  28 #include <stdlib.h>
  29 #include <limits.h>
  30 #include <unistd.h>
  31 #include <mach-o/loader.h>
  32
  33 #include <vector>
  34
  35 #include "MachOFileAbstraction.hpp"
  36 #include "Options.h"
  37 #include "ld.hpp"
  38
  39 namespace ld {
  40 namespace tool {
  41
  42 class HeaderAndLoadCommandsAbtract : public ld::Atom
  43 {
  44 public:
  45                                                         HeaderAndLoadCommandsAbtract(const ld::Section& sect, ld::Atom::Definition d,
  46                                                                                                 ld::Atom::Combine c, ld::Atom::Scope s, ld::Atom::ContentType ct,
  47                                                                                                 ld::Atom::SymbolTableInclusion i, bool dds, bool thumb, bool al,
  48                                                                                                 ld::Atom::Alignment a) : ld::Atom(sect, d, c, s, ct, i, dds, thumb, al, a) { }
  49
  50         virtual void setUUID(const uint8_t digest[16]) = 0;
  51         virtual void recopyUUIDCommand() = 0;
  52 };
  53
  54 template <typename A>
  55 class HeaderAndLoadCommandsAtom : public HeaderAndLoadCommandsAbtract
  56 {
  57 public:
  58                                                                                                 HeaderAndLoadCommandsAtom(const Options& opts, ld::Internal& state,
  59                                                                                                                                                         OutputFile& writer);
  60
  61         // overrides of ld::Atom
  62         virtual ld::File*                                                       file() const            { return NULL; }
  63         virtual bool                                                            translationUnitSource(const char** dir, const char** nm) const
  64                                                                                                                                         { return false; }
  65         virtual const char*                                                     name() const            { return "mach-o header and load commands"; }
  66         virtual uint64_t                                                        size() const;
  67         virtual uint64_t                                                        objectAddress() const { return _address; }
  68         virtual void                                                            copyRawContent(uint8_t buffer[]) const;
  69
  70         // overrides of HeaderAndLoadCommandsAbtract
  71         virtual void setUUID(const uint8_t digest[16])  { memcpy(_uuid, digest, 16); }
  72         virtual void recopyUUIDCommand();
  73
  74 private:
  75         typedef typename A::P                                           P;
  76         typedef typename A::P::E                                        E;
  77         typedef typename A::P::uint_t                           pint_t;
  78
  79         unsigned int                            nonHiddenSectionCount() const;
  80         unsigned int                            segmentCount() const;
  81         static uint32_t                         alignedSize(uint32_t x);
  82         uint32_t                                        magic() const;
  83         uint32_t                                        cpuType() const;
  84         uint32_t                                        cpuSubType() const;
  85         uint32_t                                        flags() const;
  86         uint32_t                                        fileType() const;
  87         uint32_t                                        commandsCount() const;
  88         uint32_t                                        threadLoadCommandSize() const;
  89         uint8_t*                                        copySingleSegmentLoadCommand(uint8_t* p) const;
  90         uint8_t*                                        copySegmentLoadCommands(uint8_t* p) const;
  91         uint8_t*                                        copyDyldInfoLoadCommand(uint8_t* p) const;
  92         uint8_t*                                        copySymbolTableLoadCommand(uint8_t* p) const;
  93         uint8_t*                                        copyDynamicSymbolTableLoadCommand(uint8_t* p) const;
  94         uint8_t*                                        copyDyldLoadCommand(uint8_t* p) const;
  95         uint8_t*                                        copyDylibIDLoadCommand(uint8_t* p) const;
  96         uint8_t*                                        copyRoutinesLoadCommand(uint8_t* p) const;
  97         uint8_t*                                        copyUUIDLoadCommand(uint8_t* p) const;
  98         uint8_t*                                        copyVersionLoadCommand(uint8_t* p) const;
  99         uint8_t*                                        copySourceVersionLoadCommand(uint8_t* p) const;
 100         uint8_t*                                        copyThreadsLoadCommand(uint8_t* p) const;
 101         uint8_t*                                        copyEntryPointLoadCommand(uint8_t* p) const;
 102         uint8_t*                                        copyEncryptionLoadCommand(uint8_t* p) const;
 103         uint8_t*                                        copySplitSegInfoLoadCommand(uint8_t* p) const;
 104         uint8_t*                                        copyDylibLoadCommand(uint8_t* p, const ld::dylib::File*) const;
 105         uint8_t*                                        copyRPathLoadCommand(uint8_t* p, const char*) const;
 106         uint8_t*                                        copySubFrameworkLoadCommand(uint8_t* p) const;
 107         uint8_t*                                        copyAllowableClientLoadCommand(uint8_t* p, const char* client) const;
 108         uint8_t*                                        copySubLibraryLoadCommand(uint8_t* p, const char* name) const;
 109         uint8_t*                                        copySubUmbrellaLoadCommand(uint8_t* p, const char* name) const;
 110         uint8_t*                                        copyFunctionStartsLoadCommand(uint8_t* p) const;
 111         uint8_t*                                        copyDataInCodeLoadCommand(uint8_t* p) const;
 112         uint8_t*                                        copyDependentDRLoadCommand(uint8_t* p) const;
 113         uint8_t*                                        copyDyldEnvLoadCommand(uint8_t* p, const char* env) const;
 114
 115         uint32_t                                        sectionFlags(ld::Internal::FinalSection* sect) const;
 116         bool                                            sectionTakesNoDiskSpace(ld::Internal::FinalSection* sect) const;
 117
 118
 119         const Options&                          _options;
 120         ld::Internal&                           _state;
 121         OutputFile&                                     _writer;
 122         pint_t                                          _address;
 123         bool                                            _hasDyldInfoLoadCommand;
 124         bool                                            _hasDyldLoadCommand;
 125         bool                                            _hasDylibIDLoadCommand;
 126         bool                                            _hasThreadLoadCommand;
 127         bool                                            _hasEntryPointLoadCommand;
 128         bool                                            _hasEncryptionLoadCommand;
 129         bool                                            _hasSplitSegInfoLoadCommand;
 130         bool                                            _hasRoutinesLoadCommand;
 131         bool                                            _hasUUIDLoadCommand;
 132         bool                                            _hasSymbolTableLoadCommand;
 133         bool                                            _hasDynamicSymbolTableLoadCommand;
 134         bool                                            _hasRPathLoadCommands;
 135         bool                                            _hasSubFrameworkLoadCommand;
 136         bool                                            _hasVersionLoadCommand;
 137         bool                                            _hasFunctionStartsLoadCommand;
 138         bool                                            _hasDataInCodeLoadCommand;
 139         bool                                            _hasSourceVersionLoadCommand;
 140         bool                                            _hasDependentDRInfo;
 141         uint32_t                                        _dylibLoadCommmandsCount;
 142         uint32_t                                        _allowableClientLoadCommmandsCount;
 143         uint32_t                                        _dyldEnvironExrasCount;
 144         std::vector<const char*>        _subLibraryNames;
 145         std::vector<const char*>        _subUmbrellaNames;
 146         uint8_t                                         _uuid[16];
 147         mutable macho_uuid_command<P>*  _uuidCmdInOutputBuffer;
 148
 149         static ld::Section                      _s_section;
 150         static ld::Section                      _s_preload_section;
 151 };
 152
 153 template <typename A>
 154 ld::Section HeaderAndLoadCommandsAtom<A>::_s_section("__TEXT", "__mach_header", ld::Section::typeMachHeader, true);
 155 template <typename A>
 156 ld::Section HeaderAndLoadCommandsAtom<A>::_s_preload_section("__HEADER", "__mach_header", ld::Section::typeMachHeader, true);
 157
 158
 159 template <typename A>
 160 HeaderAndLoadCommandsAtom<A>::HeaderAndLoadCommandsAtom(const Options& opts, ld::Internal& state, OutputFile& writer)
 161         : HeaderAndLoadCommandsAbtract((opts.outputKind() == Options::kPreload) ? _s_preload_section : _s_section,
 162                                 ld::Atom::definitionRegular, ld::Atom::combineNever,
 163                                 ld::Atom::scopeTranslationUnit, ld::Atom::typeUnclassified,
 164                                 ld::Atom::symbolTableNotIn, false, false, false,
 165                                 (opts.outputKind() == Options::kPreload) ? ld::Atom::Alignment(0) : ld::Atom::Alignment(12) ),
 166                 _options(opts), _state(state), _writer(writer), _address(0), _uuidCmdInOutputBuffer(NULL)
 167 {
 168         bzero(_uuid, 16);
 169         _hasDyldInfoLoadCommand = opts.makeCompressedDyldInfo();
 170         _hasDyldLoadCommand = ((opts.outputKind() == Options::kDynamicExecutable) || (_options.outputKind() == Options::kDyld));
 171         _hasDylibIDLoadCommand = (opts.outputKind() == Options::kDynamicLibrary);
 172         _hasThreadLoadCommand = _options.needsThreadLoadCommand();
 173         _hasEntryPointLoadCommand = _options.needsEntryPointLoadCommand();
 174         _hasEncryptionLoadCommand = opts.makeEncryptable();
 175         _hasSplitSegInfoLoadCommand = opts.sharedRegionEligible();
 176         _hasRoutinesLoadCommand = (opts.initFunctionName() != NULL);
 177         _hasSymbolTableLoadCommand = true;
 178         _hasUUIDLoadCommand = (opts.UUIDMode() != Options::kUUIDNone);
 179         switch ( opts.outputKind() ) {
 180                 case Options::kDynamicExecutable:
 181                 case Options::kDynamicLibrary:
 182                 case Options::kDynamicBundle:
 183                 case Options::kDyld:
 184                 case Options::kKextBundle:
 185                         _hasDynamicSymbolTableLoadCommand = true;
 186                         break;
 187                 case Options::kObjectFile:
 188                         if ( ! state.someObjectFileHasDwarf )
 189                                 _hasUUIDLoadCommand = false;
 190                         _hasDynamicSymbolTableLoadCommand = false;
 191                         for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
 192                                 if ( (*it)->type() == ld::Section::typeNonLazyPointer ) {
 193                                         _hasDynamicSymbolTableLoadCommand = true;
 194                                         break;
 195                                 }
 196                         }
 197                         break;
 198                 case Options::kStaticExecutable:
 199                         _hasDynamicSymbolTableLoadCommand = opts.positionIndependentExecutable();
 200                         break;
 201                 case Options::kPreload:
 202                         _hasDynamicSymbolTableLoadCommand = opts.positionIndependentExecutable();
 203                         break;
 204         }
 205         _hasRPathLoadCommands = (_options.rpaths().size() != 0);
 206         _hasSubFrameworkLoadCommand = (_options.umbrellaName() != NULL);
 207         _hasVersionLoadCommand = _options.addVersionLoadCommand();
 208         _hasFunctionStartsLoadCommand = _options.addFunctionStarts();
 209         _hasDataInCodeLoadCommand = _options.addDataInCodeInfo();
 210         _hasSourceVersionLoadCommand = _options.needsSourceVersionLoadCommand();
 211         _hasDependentDRInfo = _options.needsDependentDRInfo();
 212         _dylibLoadCommmandsCount = _writer.dylibCount();
 213         _allowableClientLoadCommmandsCount = _options.allowableClients().size();
 214         _dyldEnvironExrasCount = _options.dyldEnvironExtras().size();
 215         if ( ! _options.useSimplifiedDylibReExports() ) {
 216                 // target OS does not support LC_REEXPORT_DYLIB, so use old complicated load commands
 217                 for(uint32_t ord=1; ord <= _writer.dylibCount(); ++ord) {
 218                         const ld::dylib::File* dylib = _writer.dylibByOrdinal(ord);
 219                         if ( dylib->willBeReExported() ) {
 220                                 // if child says it is an sub-framework of the image being created, then nothing to do here
 221                                 bool isSubFramework = false;
 222                                 const char* childInUmbrella = dylib->parentUmbrella();
 223                                 if ( childInUmbrella != NULL ) {
 224                                         const char* myLeaf = strrchr(_options.installPath(), '/');
 225                                         if ( myLeaf != NULL ) {
 226                                                 if ( strcmp(childInUmbrella, &myLeaf[1]) == 0 )
 227                                                         isSubFramework = true;
 228                                         }
 229                                 }
 230                                 // LC_SUB_FRAMEWORK is in child, so do nothing in parent
 231                                 if ( ! isSubFramework ) {
 232                                         // this dylib also needs a sub_x load command
 233                                         bool isFrameworkReExport = false;
 234                                         const char* lastSlash = strrchr(dylib->installPath(), '/');
 235                                         if ( lastSlash != NULL ) {
 236                                                 char frameworkName[strlen(lastSlash)+20];
 237                                                 sprintf(frameworkName, "/%s.framework/", &lastSlash[1]);
 238                                                 isFrameworkReExport = (strstr(dylib->installPath(), frameworkName) != NULL);
 239                                         }
 240                                         if ( isFrameworkReExport ) {
 241                                                 // needs a LC_SUB_UMBRELLA command
 242                                                 _subUmbrellaNames.push_back(&lastSlash[1]);
 243                                         }
 244                                         else {
 245                                                 // needs a LC_SUB_LIBRARY command
 246                                                 const char* nameStart = &lastSlash[1];
 247                                                 if ( lastSlash == NULL )
 248                                                         nameStart = dylib->installPath();
 249                                                 int len = strlen(nameStart);
 250                                                 const char* dot = strchr(nameStart, '.');
 251                                                 if ( dot != NULL )
 252                                                         len = dot - nameStart;
 253                                                 char* subLibName = new char[len+1];
 254                                                 strlcpy(subLibName, nameStart, len+1);
 255                                                 _subLibraryNames.push_back(subLibName);
 256                                         }
 257                                 }
 258                         }
 259                 }
 260         }
 261 }
 262
 263 template <typename A>
 264 uint32_t HeaderAndLoadCommandsAtom<A>::alignedSize(uint32_t size)
 265 {
 266         if ( sizeof(pint_t) == 4 )
 267                 return ((size+3) & (-4));       // 4-byte align all load commands for 32-bit mach-o
 268         else
 269                 return ((size+7) & (-8));       // 8-byte align all load commands for 64-bit mach-o
 270 }
 271
 272
 273 template <typename A>
 274 unsigned int HeaderAndLoadCommandsAtom<A>::nonHiddenSectionCount() const
 275 {
 276         unsigned int count = 0;
 277         for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
 278                 if ( ! (*it)->isSectionHidden() && ((*it)->type() != ld::Section::typeTentativeDefs) )
 279                         ++count;
 280         }
 281         return count;
 282 }
 283
 284 template <typename A>
 285 unsigned int HeaderAndLoadCommandsAtom<A>::segmentCount() const
 286 {
 287         if ( _options.outputKind() == Options::kObjectFile ) {
 288                 // .o files have one anonymous segment that contains all sections
 289                 return 1;
 290         }
 291
 292         unsigned int count = 0;
 293         const char* lastSegName = "";
 294         for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
 295                 if ( _options.outputKind() == Options::kPreload ) {
 296                         if ( (*it)->type() == ld::Section::typeMachHeader )
 297                                 continue; // for -preload, don't put hidden __HEADER segment into output
 298                         if ( (*it)->type() == ld::Section::typeLinkEdit )
 299                                 continue; // for -preload, don't put hidden __LINKEDIT segment into output
 300                 }
 301                 if ( strcmp(lastSegName, (*it)->segmentName()) != 0 ) {
 302                         lastSegName = (*it)->segmentName();
 303                         ++count;
 304                 }
 305         }
 306         return count;
 307 }
 308
 309
 310 template <typename A>
 311 uint64_t HeaderAndLoadCommandsAtom<A>::size() const
 312 {
 313         uint32_t sz = sizeof(macho_header<P>);
 314
 315         sz += sizeof(macho_segment_command<P>) * this->segmentCount();
 316         sz += sizeof(macho_section<P>) * this->nonHiddenSectionCount();
 317
 318         if ( _hasDylibIDLoadCommand )
 319                 sz += alignedSize(sizeof(macho_dylib_command<P>) + strlen(_options.installPath()) + 1);
 320
 321         if ( _hasDyldInfoLoadCommand )
 322                 sz += sizeof(macho_dyld_info_command<P>);
 323
 324         if ( _hasSymbolTableLoadCommand )
 325                 sz += sizeof(macho_symtab_command<P>);
 326
 327         if ( _hasDynamicSymbolTableLoadCommand )
 328                 sz += sizeof(macho_dysymtab_command<P>);
 329
 330         if ( _hasDyldLoadCommand )
 331                 sz += alignedSize(sizeof(macho_dylinker_command<P>) + strlen(_options.dyldInstallPath()) + 1);
 332
 333         if ( _hasRoutinesLoadCommand )
 334                 sz += sizeof(macho_routines_command<P>);
 335
 336         if ( _hasUUIDLoadCommand )
 337                 sz += sizeof(macho_uuid_command<P>);
 338
 339         if ( _hasVersionLoadCommand )
 340                 sz += sizeof(macho_version_min_command<P>);
 341
 342         if ( _hasSourceVersionLoadCommand )
 343                 sz += sizeof(macho_source_version_command<P>);
 344
 345         if ( _hasThreadLoadCommand )
 346                 sz += this->threadLoadCommandSize();
 347
 348         if ( _hasEntryPointLoadCommand )
 349                 sz += sizeof(macho_entry_point_command<P>);
 350
 351         if ( _hasEncryptionLoadCommand )
 352                 sz += sizeof(macho_encryption_info_command<P>);
 353
 354         if ( _hasSplitSegInfoLoadCommand )
 355                 sz += sizeof(macho_linkedit_data_command<P>);
 356
 357         for(uint32_t ord=1; ord <= _writer.dylibCount(); ++ord) {
 358                 sz += alignedSize(sizeof(macho_dylib_command<P>) + strlen(_writer.dylibByOrdinal(ord)->installPath()) + 1);
 359         }
 360
 361         if ( _hasRPathLoadCommands ) {
 362                 const std::vector<const char*>& rpaths = _options.rpaths();
 363                 for (std::vector<const char*>::const_iterator it = rpaths.begin(); it != rpaths.end(); ++it) {
 364                         sz += alignedSize(sizeof(macho_rpath_command<P>) + strlen(*it) + 1);
 365                 }
 366         }
 367
 368         if ( _hasSubFrameworkLoadCommand )
 369                 sz += alignedSize(sizeof(macho_sub_framework_command<P>) + strlen(_options.umbrellaName()) + 1);
 370
 371         for (std::vector<const char*>::const_iterator it = _subLibraryNames.begin(); it != _subLibraryNames.end(); ++it) {
 372                 sz += alignedSize(sizeof(macho_sub_library_command<P>) + strlen(*it) + 1);
 373         }
 374
 375         for (std::vector<const char*>::const_iterator it = _subUmbrellaNames.begin(); it != _subUmbrellaNames.end(); ++it) {
 376                 sz += alignedSize(sizeof(macho_sub_umbrella_command<P>) + strlen(*it) + 1);
 377         }
 378
 379         if ( _allowableClientLoadCommmandsCount != 0 ) {
 380                 const std::vector<const char*>& clients = _options.allowableClients();
 381                 for (std::vector<const char*>::const_iterator it = clients.begin(); it != clients.end(); ++it) {
 382                         sz += alignedSize(sizeof(macho_sub_client_command<P>) + strlen(*it) + 1);
 383                 }
 384         }
 385
 386         if ( _dyldEnvironExrasCount != 0 ) {
 387                 const std::vector<const char*>& extras = _options.dyldEnvironExtras();
 388                 for (std::vector<const char*>::const_iterator it = extras.begin(); it != extras.end(); ++it) {
 389                         sz += alignedSize(sizeof(macho_dylinker_command<P>) + strlen(*it) + 1);
 390                 }
 391         }
 392
 393         if ( _hasFunctionStartsLoadCommand )
 394                 sz += sizeof(macho_linkedit_data_command<P>);
 395
 396         if ( _hasDataInCodeLoadCommand )
 397                 sz += sizeof(macho_linkedit_data_command<P>);
 398
 399         if ( _hasDependentDRInfo )
 400                 sz += sizeof(macho_linkedit_data_command<P>);
 401
 402         return sz;
 403 }
 404
 405 template <typename A>
 406 uint32_t HeaderAndLoadCommandsAtom<A>::commandsCount() const
 407 {
 408         uint32_t count = this->segmentCount();
 409
 410         if ( _hasDylibIDLoadCommand )
 411                 ++count;
 412
 413         if ( _hasDyldInfoLoadCommand )
 414                 ++count;
 415
 416         if ( _hasSymbolTableLoadCommand )
 417                 ++count;
 418
 419         if ( _hasDynamicSymbolTableLoadCommand )
 420                 ++count;
 421
 422         if ( _hasDyldLoadCommand )
 423                 ++count;
 424
 425         if ( _hasRoutinesLoadCommand )
 426                 ++count;
 427
 428         if ( _hasUUIDLoadCommand )
 429                 ++count;
 430
 431         if ( _hasVersionLoadCommand )
 432                 ++count;
 433
 434         if ( _hasSourceVersionLoadCommand )
 435                 ++count;
 436
 437         if ( _hasThreadLoadCommand )
 438                 ++count;
 439
 440         if ( _hasEntryPointLoadCommand )
 441                 ++count;
 442
 443         if ( _hasEncryptionLoadCommand )
 444                 ++count;
 445
 446         if ( _hasSplitSegInfoLoadCommand )
 447                 ++count;
 448
 449         count += _dylibLoadCommmandsCount;
 450
 451         count += _options.rpaths().size();
 452
 453         if ( _hasSubFrameworkLoadCommand )
 454                 ++count;
 455
 456         count += _subLibraryNames.size();
 457
 458         count += _subUmbrellaNames.size();
 459
 460         count += _allowableClientLoadCommmandsCount;
 461
 462         count += _dyldEnvironExrasCount;
 463
 464         if ( _hasFunctionStartsLoadCommand )
 465                 ++count;
 466
 467         if ( _hasDataInCodeLoadCommand )
 468                 ++count;
 469
 470         if ( _hasDependentDRInfo )
 471                 ++count;
 472
 473         return count;
 474 }
 475
 476 template <typename A>
 477 uint32_t HeaderAndLoadCommandsAtom<A>::fileType() const
 478 {
 479         switch ( _options.outputKind() ) {
 480                 case Options::kDynamicExecutable:
 481                 case Options::kStaticExecutable:
 482                         return MH_EXECUTE;
 483                 case Options::kDynamicLibrary:
 484                         return MH_DYLIB;
 485                 case Options::kDynamicBundle:
 486                         return MH_BUNDLE;
 487                 case Options::kObjectFile:
 488                         return MH_OBJECT;
 489                 case Options::kDyld:
 490                         return MH_DYLINKER;
 491                 case Options::kPreload:
 492                         return MH_PRELOAD;
 493                 case Options::kKextBundle:
 494                         return MH_KEXT_BUNDLE;
 495         }
 496         throw "unknonwn mach-o file type";
 497 }
 498
 499 template <typename A>
 500 uint32_t HeaderAndLoadCommandsAtom<A>::flags() const
 501 {
 502         uint32_t bits = 0;
 503         if ( _options.outputKind() == Options::kObjectFile ) {
 504                 if ( _state.allObjectFilesScatterable )
 505                         bits = MH_SUBSECTIONS_VIA_SYMBOLS;
 506         }
 507         else {
 508                 if ( _options.outputKind() == Options::kStaticExecutable ) {
 509                         bits |= MH_NOUNDEFS;
 510                         if ( _options.positionIndependentExecutable() )
 511                                 bits |= MH_PIE;
 512                 }
 513                 else if ( _options.outputKind() == Options::kPreload ) {
 514                         bits |= MH_NOUNDEFS;
 515                         if ( _options.positionIndependentExecutable() )
 516                                 bits |= MH_PIE;
 517                 }
 518                 else {
 519                         bits = MH_DYLDLINK;
 520                         switch ( _options.nameSpace() ) {
 521                                 case Options::kTwoLevelNameSpace:
 522                                         bits |= MH_TWOLEVEL | MH_NOUNDEFS;
 523                                         break;
 524                                 case Options::kFlatNameSpace:
 525                                         break;
 526                                 case Options::kForceFlatNameSpace:
 527                                         bits |= MH_FORCE_FLAT;
 528                                         break;
 529                         }
 530                         if ( _writer.hasWeakExternalSymbols || _writer.overridesWeakExternalSymbols )
 531                                 bits |= MH_WEAK_DEFINES;
 532                         if ( _writer.usesWeakExternalSymbols || _writer.hasWeakExternalSymbols )
 533                                 bits |= MH_BINDS_TO_WEAK;
 534                         if ( _options.prebind() )
 535                                 bits |= MH_PREBOUND;
 536                         if ( _options.splitSeg() )
 537                                 bits |= MH_SPLIT_SEGS;
 538                         if ( (_options.outputKind() == Options::kDynamicLibrary)
 539                                         && _writer._noReExportedDylibs
 540                                         && _options.useSimplifiedDylibReExports() ) {
 541                                 bits |= MH_NO_REEXPORTED_DYLIBS;
 542                         }
 543                         if ( _options.positionIndependentExecutable() && ! _writer.pieDisabled )
 544                                 bits |= MH_PIE;
 545                         if ( _options.markAutoDeadStripDylib() )
 546                                 bits |= MH_DEAD_STRIPPABLE_DYLIB;
 547                         if ( _writer.hasThreadLocalVariableDefinitions )
 548                                 bits |= MH_HAS_TLV_DESCRIPTORS;
 549                         if ( _options.hasNonExecutableHeap() )
 550                                 bits |= MH_NO_HEAP_EXECUTION;
 551                 }
 552                 if ( _options.hasExecutableStack() )
 553                         bits |= MH_ALLOW_STACK_EXECUTION;
 554         }
 555         return bits;
 556 }
 557
 558 template <> uint32_t HeaderAndLoadCommandsAtom<x86>::magic() const              { return MH_MAGIC; }
 559 template <> uint32_t HeaderAndLoadCommandsAtom<x86_64>::magic() const   { return MH_MAGIC_64; }
 560 template <> uint32_t HeaderAndLoadCommandsAtom<arm>::magic() const              { return MH_MAGIC; }
 561
 562 template <> uint32_t HeaderAndLoadCommandsAtom<x86>::cpuType() const    { return CPU_TYPE_I386; }
 563 template <> uint32_t HeaderAndLoadCommandsAtom<x86_64>::cpuType() const { return CPU_TYPE_X86_64; }
 564 template <> uint32_t HeaderAndLoadCommandsAtom<arm>::cpuType() const    { return CPU_TYPE_ARM; }
 565
 566
 567
 568 template <>
 569 uint32_t HeaderAndLoadCommandsAtom<x86>::cpuSubType() const
 570 {
 571         return CPU_SUBTYPE_I386_ALL;
 572 }
 573
 574 template <>
 575 uint32_t HeaderAndLoadCommandsAtom<x86_64>::cpuSubType() const
 576 {
 577         if ( (_options.outputKind() == Options::kDynamicExecutable) && (_options.macosxVersionMin() >= ld::mac10_5) )
 578                 return (CPU_SUBTYPE_X86_64_ALL | 0x80000000);
 579         else
 580                 return CPU_SUBTYPE_X86_64_ALL;
 581 }
 582
 583 template <>
 584 uint32_t HeaderAndLoadCommandsAtom<arm>::cpuSubType() const
 585 {
 586         return _state.cpuSubType;
 587 }
 588
 589
 590
 591 template <typename A>
 592 uint8_t* HeaderAndLoadCommandsAtom<A>::copySingleSegmentLoadCommand(uint8_t* p) const
 593 {
 594         // in .o files there is just one segment load command with a blank name
 595         // and all sections under it
 596         macho_segment_command<P>* cmd = (macho_segment_command<P>*)p;
 597         cmd->set_cmd(macho_segment_command<P>::CMD);
 598         cmd->set_segname("");
 599         cmd->set_vmaddr(_options.baseAddress());
 600         cmd->set_vmsize(0);             // updated after sections set
 601         cmd->set_fileoff(0);    // updated after sections set
 602         cmd->set_filesize(0);   // updated after sections set
 603         cmd->set_maxprot(VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
 604         cmd->set_initprot(VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
 605         cmd->set_nsects(this->nonHiddenSectionCount());
 606         cmd->set_flags(0);
 607         // add sections array
 608         macho_section<P>* msect = (macho_section<P>*)&p[sizeof(macho_segment_command<P>)];
 609         for (std::vector<ld::Internal::FinalSection*>::iterator sit = _state.sections.begin(); sit != _state.sections.end(); ++sit)  {
 610                 ld::Internal::FinalSection* fsect = *sit;
 611                 if ( fsect->isSectionHidden() )
 612                         continue;
 613                 if ( fsect->type() == ld::Section::typeTentativeDefs )
 614                         continue;
 615                 msect->set_sectname(fsect->sectionName());
 616                 msect->set_segname(fsect->segmentName());
 617                 msect->set_addr(fsect->address);
 618                 msect->set_size(fsect->size);
 619                 msect->set_offset(fsect->fileOffset);
 620                 msect->set_align(fsect->alignment);
 621                 msect->set_reloff((fsect->relocCount == 0) ? 0 : _writer.sectionRelocationsSection->fileOffset + fsect->relocStart * sizeof(macho_relocation_info<P>));
 622                 msect->set_nreloc(fsect->relocCount);
 623                 msect->set_flags(sectionFlags(fsect));
 624                 msect->set_reserved1(fsect->indirectSymTabStartIndex);
 625                 msect->set_reserved2(fsect->indirectSymTabElementSize);
 626                 // update segment info
 627                 if ( cmd->fileoff() == 0 )
 628                         cmd->set_fileoff(fsect->fileOffset);
 629                 cmd->set_vmsize(fsect->address + fsect->size - cmd->vmaddr());
 630                 if ( (fsect->type() != ld::Section::typeZeroFill) && (fsect->type() != ld::Section::typeTentativeDefs) )
 631                         cmd->set_filesize(fsect->fileOffset + fsect->size - cmd->fileoff());
 632                 ++msect;
 633         }
 634         cmd->set_cmdsize(sizeof(macho_segment_command<P>) + cmd->nsects()*sizeof(macho_section<P>));
 635         return p + cmd->cmdsize();
 636 }
 637
 638 struct SegInfo {
 639                                                                                                 SegInfo(const char* n, const Options&);
 640         const char*                                                                     segName;
 641         uint32_t                                                                        nonHiddenSectionCount;
 642         uint32_t                                                                        maxProt;
 643         uint32_t                                                                        initProt;
 644         std::vector<ld::Internal::FinalSection*>        sections;
 645 };
 646
 647
 648 SegInfo::SegInfo(const char* n, const Options& opts)
 649         : segName(n), nonHiddenSectionCount(0), maxProt(opts.maxSegProtection(n)), initProt(opts.initialSegProtection(n))
 650 {
 651 }
 652
 653
 654 template <typename A>
 655 uint32_t HeaderAndLoadCommandsAtom<A>::sectionFlags(ld::Internal::FinalSection* sect) const
 656 {
 657         uint32_t bits;
 658         switch ( sect->type() ) {
 659                 case ld::Section::typeUnclassified:
 660                         if ( strcmp(sect->segmentName(), "__OBJC") == 0 )
 661                                 return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 662                         else if ( (strcmp(sect->sectionName(), "__objc_classlist") == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
 663                                 return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 664                         else if ( (strcmp(sect->sectionName(), "__objc_catlist") == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
 665                                 return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 666                         else if ( (strncmp(sect->sectionName(), "__objc_superrefs", 16) == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
 667                                 return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 668                         else if ( (strncmp(sect->sectionName(), "__objc_nlclslist", 16) == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
 669                                 return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 670                         else
 671                                 return S_REGULAR;
 672                 case ld::Section::typeCode:
 673                         bits = S_REGULAR | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS;
 674                         if ( sect->hasLocalRelocs && ! _writer.pieDisabled )
 675                                 bits |= S_ATTR_LOC_RELOC;
 676                         if ( sect->hasExternalRelocs )
 677                                 bits |= S_ATTR_EXT_RELOC;
 678                         return bits;
 679                 case ld::Section::typePageZero:
 680                         return S_REGULAR;
 681                 case ld::Section::typeImportProxies:
 682                         return S_REGULAR;
 683                 case ld::Section::typeLinkEdit:
 684                         return S_REGULAR;
 685                 case ld::Section::typeMachHeader:
 686                         return S_REGULAR;
 687                 case ld::Section::typeStack:
 688                         return S_REGULAR;
 689                 case ld::Section::typeLiteral4:
 690                         return S_4BYTE_LITERALS;
 691                 case ld::Section::typeLiteral8:
 692                         return S_8BYTE_LITERALS;
 693                 case ld::Section::typeLiteral16:
 694                         return S_16BYTE_LITERALS;
 695                 case ld::Section::typeConstants:
 696                         return S_REGULAR;
 697                 case ld::Section::typeTempLTO:
 698                         assert(0 && "typeTempLTO should not make it to final linked image");
 699                         return S_REGULAR;
 700                 case ld::Section::typeAbsoluteSymbols:
 701                         assert(0 && "typeAbsoluteSymbols should not make it to final linked image");
 702                         return S_REGULAR;
 703                 case ld::Section::typeCString:
 704                 case ld::Section::typeNonStdCString:
 705                         return S_CSTRING_LITERALS;
 706                 case ld::Section::typeCStringPointer:
 707                         return S_LITERAL_POINTERS | S_ATTR_NO_DEAD_STRIP;
 708                 case ld::Section::typeUTF16Strings:
 709                         return S_REGULAR;
 710                 case ld::Section::typeCFString:
 711                         return S_REGULAR;
 712                 case ld::Section::typeObjC1Classes:
 713                         return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 714                 case ld::Section::typeCFI:
 715                         return S_REGULAR;
 716                 case ld::Section::typeLSDA:
 717                         return S_REGULAR;
 718                 case ld::Section::typeDtraceDOF:
 719                         return S_DTRACE_DOF;
 720                 case ld::Section::typeUnwindInfo:
 721                         return S_REGULAR;
 722                 case ld::Section::typeObjCClassRefs:
 723                 case ld::Section::typeObjC2CategoryList:
 724                         return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
 725                 case ld::Section::typeZeroFill:
 726                         if ( _options.optimizeZeroFill() )
 727                                 return S_ZEROFILL;
 728                         else
 729                                 return S_REGULAR;
 730                 case ld::Section::typeTentativeDefs:
 731                         assert(0 && "typeTentativeDefs should not make it to final linked image");
 732                         return S_REGULAR;
 733                 case ld::Section::typeLazyPointer:
 734                 case ld::Section::typeLazyPointerClose:
 735                         return S_LAZY_SYMBOL_POINTERS;
 736                 case ld::Section::typeStubClose:
 737                 case ld::Section::typeStub:
 738                         if ( sect->hasLocalRelocs )
 739                                 return S_SYMBOL_STUBS | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_LOC_RELOC;
 740                         else
 741                                 return S_SYMBOL_STUBS | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS;
 742                 case ld::Section::typeNonLazyPointer:
 743                         if ( _options.outputKind() == Options::kKextBundle  )
 744                                 return S_REGULAR;
 745                         else if ( (_options.outputKind() == Options::kStaticExecutable) && _options.positionIndependentExecutable() )
 746                                 return S_REGULAR;
 747                         else
 748                                 return S_NON_LAZY_SYMBOL_POINTERS;
 749                 case ld::Section::typeDyldInfo:
 750                         return S_REGULAR;
 751                 case ld::Section::typeLazyDylibPointer:
 752                         return S_LAZY_DYLIB_SYMBOL_POINTERS;
 753                 case ld::Section::typeStubHelper:
 754                         if ( sect->hasLocalRelocs )
 755                                 return S_REGULAR | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_LOC_RELOC;
 756                         else
 757                                 return S_REGULAR | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS;
 758                 case ld::Section::typeInitializerPointers:
 759                         // <rdar://problem/11456679> i386 kexts need different section type
 760                         if ( (_options.outputKind() == Options::kObjectFile)
 761                                         && (strcmp(sect->sectionName(), "__constructor") == 0)
 762                                         && (strcmp(sect->segmentName(), "__TEXT") == 0) )
 763                                 return S_REGULAR;
 764                         else
 765                                 return S_MOD_INIT_FUNC_POINTERS;
 766                 case ld::Section::typeTerminatorPointers:
 767                         return S_MOD_TERM_FUNC_POINTERS;
 768                 case ld::Section::typeTLVInitialValues:
 769                         return S_THREAD_LOCAL_REGULAR;
 770                 case ld::Section::typeTLVZeroFill:
 771                         return S_THREAD_LOCAL_ZEROFILL;
 772                 case ld::Section::typeTLVDefs:
 773                         return S_THREAD_LOCAL_VARIABLES;
 774                 case ld::Section::typeTLVInitializerPointers:
 775                         return S_THREAD_LOCAL_INIT_FUNCTION_POINTERS;
 776                 case ld::Section::typeTLVPointers:
 777                         return S_THREAD_LOCAL_VARIABLE_POINTERS;
 778                 case ld::Section::typeFirstSection:
 779                         assert(0 && "typeFirstSection should not make it to final linked image");
 780                         return S_REGULAR;
 781                 case ld::Section::typeLastSection:
 782                         assert(0 && "typeLastSection should not make it to final linked image");
 783                         return S_REGULAR;
 784                 case ld::Section::typeDebug:
 785                         return S_REGULAR | S_ATTR_DEBUG;
 786         }
 787         return S_REGULAR;
 788 }
 789
 790
 791 template <typename A>
 792 bool HeaderAndLoadCommandsAtom<A>::sectionTakesNoDiskSpace(ld::Internal::FinalSection* sect) const
 793 {
 794         switch ( sect->type() ) {
 795                 case ld::Section::typeZeroFill:
 796                 case ld::Section::typeTLVZeroFill:
 797                         return _options.optimizeZeroFill();
 798                 case ld::Section::typeAbsoluteSymbols:
 799                 case ld::Section::typeTentativeDefs:
 800                 case ld::Section::typeLastSection:
 801                         return true;
 802                 default:
 803                         break;
 804         }
 805         return false;
 806 }
 807
 808
 809 template <typename A>
 810 uint8_t* HeaderAndLoadCommandsAtom<A>::copySegmentLoadCommands(uint8_t* p) const
 811 {
 812         // group sections into segments
 813         std::vector<SegInfo> segs;
 814         const char* lastSegName = "";
 815         for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
 816                 ld::Internal::FinalSection* sect = *it;
 817                 if ( _options.outputKind() == Options::kPreload ) {
 818                         if ( (*it)->type() == ld::Section::typeMachHeader )
 819                                 continue; // for -preload, don't put hidden __HEADER segment into output
 820                         if ( (*it)->type() == ld::Section::typeLinkEdit )
 821                                 continue; // for -preload, don't put hidden __LINKEDIT segment into output
 822                 }
 823                 if ( strcmp(lastSegName, sect->segmentName()) != 0 ) {
 824                         SegInfo si(sect->segmentName(), _options);
 825                         segs.push_back(si);
 826                         lastSegName = sect->segmentName();
 827                 }
 828                 if ( ! sect->isSectionHidden() )
 829                         segs.back().nonHiddenSectionCount++;
 830                 segs.back().sections.push_back(sect);
 831         }
 832         // write out segment load commands for each section with trailing sections
 833         for (std::vector<SegInfo>::iterator it = segs.begin(); it != segs.end(); ++it) {
 834                 SegInfo& si = *it;
 835                 ld::Internal::FinalSection* lastNonZeroFillSection = NULL;
 836                 for (int i=si.sections.size()-1; i >= 0; --i) {
 837                         if ( !sectionTakesNoDiskSpace(si.sections[i]) ) {
 838                                 lastNonZeroFillSection = si.sections[i];
 839                                 break;
 840                         }
 841                 }
 842                 uint64_t vmsize = si.sections.back()->address + si.sections.back()->size - si.sections.front()->address;
 843                 vmsize = ((vmsize+_options.segmentAlignment()-1) & (-_options.segmentAlignment()));
 844                 uint64_t filesize = 0;
 845                 if ( lastNonZeroFillSection != NULL ) {
 846                         filesize = lastNonZeroFillSection->address + lastNonZeroFillSection->size - si.sections.front()->address;
 847                         // round up all segments to page aligned, except __LINKEDIT
 848                         if ( (si.sections[0]->type() != ld::Section::typeLinkEdit) && (si.sections[0]->type() != ld::Section::typeImportProxies) )
 849                                 filesize = (filesize + _options.segmentAlignment()-1) & (-_options.segmentAlignment());
 850                 }
 851                 if ( si.sections.front()->type() == ld::Section::typePageZero )
 852                         filesize = 0;
 853                 else if ( si.sections.front()->type() == ld::Section::typeStack )
 854                         filesize = 0;
 855                 macho_segment_command<P>* segCmd = (macho_segment_command<P>*)p;
 856                 segCmd->set_cmd(macho_segment_command<P>::CMD);
 857                 segCmd->set_cmdsize(sizeof(macho_segment_command<P>) + si.nonHiddenSectionCount*sizeof(macho_section<P>));
 858                 segCmd->set_segname(si.sections.front()->segmentName());
 859                 segCmd->set_vmaddr(si.sections.front()->address);
 860                 segCmd->set_vmsize(vmsize);
 861                 segCmd->set_fileoff(si.sections.front()->fileOffset);
 862                 segCmd->set_filesize(filesize);
 863                 segCmd->set_maxprot(si.maxProt);
 864                 segCmd->set_initprot(si.initProt);
 865                 segCmd->set_nsects(si.nonHiddenSectionCount);
 866                 segCmd->set_flags(0);
 867                 p += sizeof(macho_segment_command<P>);
 868                 macho_section<P>* msect = (macho_section<P>*)p;
 869                 for (std::vector<ld::Internal::FinalSection*>::iterator sit = si.sections.begin(); sit != si.sections.end(); ++sit) {
 870                         ld::Internal::FinalSection* fsect = *sit;
 871                         if ( ! fsect->isSectionHidden() ) {
 872                                 msect->set_sectname(fsect->sectionName());
 873                                 msect->set_segname(fsect->segmentName());
 874                                 msect->set_addr(fsect->address);
 875                                 msect->set_size(fsect->size);
 876                                 msect->set_offset(sectionTakesNoDiskSpace(fsect) ? 0 : fsect->fileOffset);
 877                                 msect->set_align(fsect->alignment);
 878                                 msect->set_reloff(0);
 879                                 msect->set_nreloc(0);
 880                                 msect->set_flags(sectionFlags(fsect));
 881                                 msect->set_reserved1(fsect->indirectSymTabStartIndex);
 882                                 msect->set_reserved2(fsect->indirectSymTabElementSize);
 883                                 p += sizeof(macho_section<P>);
 884                                 ++msect;
 885                         }
 886                 }
 887         }
 888
 889         return p;
 890 }
 891
 892
 893 template <typename A>
 894 uint8_t* HeaderAndLoadCommandsAtom<A>::copySymbolTableLoadCommand(uint8_t* p) const
 895 {
 896         // build LC_SYMTAB command
 897         macho_symtab_command<P>*   symbolTableCmd = (macho_symtab_command<P>*)p;
 898         symbolTableCmd->set_cmd(LC_SYMTAB);
 899         symbolTableCmd->set_cmdsize(sizeof(macho_symtab_command<P>));
 900         symbolTableCmd->set_nsyms(_writer.symbolTableSection->size/sizeof(macho_nlist<P>));
 901         symbolTableCmd->set_symoff(_writer.symbolTableSection->size == 0 ? 0 : _writer.symbolTableSection->fileOffset);
 902         symbolTableCmd->set_stroff(_writer.stringPoolSection->size == 0 ? 0 : _writer.stringPoolSection->fileOffset );
 903         symbolTableCmd->set_strsize(_writer.stringPoolSection->size);
 904         return p + sizeof(macho_symtab_command<P>);
 905 }
 906
 907 template <typename A>
 908 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDynamicSymbolTableLoadCommand(uint8_t* p) const
 909 {
 910         // build LC_SYMTAB command
 911         macho_dysymtab_command<P>*   dynamicSymbolTableCmd = (macho_dysymtab_command<P>*)p;
 912         dynamicSymbolTableCmd->set_cmd(LC_DYSYMTAB);
 913         dynamicSymbolTableCmd->set_cmdsize(sizeof(macho_dysymtab_command<P>));
 914         dynamicSymbolTableCmd->set_ilocalsym(0);
 915         dynamicSymbolTableCmd->set_nlocalsym(_writer._localSymbolsCount);
 916         dynamicSymbolTableCmd->set_iextdefsym(dynamicSymbolTableCmd->ilocalsym()+dynamicSymbolTableCmd->nlocalsym());
 917         dynamicSymbolTableCmd->set_nextdefsym(_writer._globalSymbolsCount);
 918         dynamicSymbolTableCmd->set_iundefsym(dynamicSymbolTableCmd->iextdefsym()+dynamicSymbolTableCmd->nextdefsym());
 919         dynamicSymbolTableCmd->set_nundefsym(_writer._importSymbolsCount);
 920
 921         // FIX ME: support for 10.3 dylibs which need modules
 922         //if ( fWriter.fModuleInfoAtom != NULL ) {
 923         //      dynamicSymbolTableCmd->set_tocoff(fWriter.fModuleInfoAtom->getTableOfContentsFileOffset());
 924         //      dynamicSymbolTableCmd->set_ntoc(fWriter.fSymbolTableExportCount);
 925         //      dynamicSymbolTableCmd->set_modtaboff(fWriter.fModuleInfoAtom->getModuleTableFileOffset());
 926         //      dynamicSymbolTableCmd->set_nmodtab(1);
 927         //      dynamicSymbolTableCmd->set_extrefsymoff(fWriter.fModuleInfoAtom->getReferencesFileOffset());
 928         //      dynamicSymbolTableCmd->set_nextrefsyms(fWriter.fModuleInfoAtom->getReferencesCount());
 929         //}
 930
 931         bool hasIndirectSymbols = ( (_writer.indirectSymbolTableSection != NULL) && (_writer.indirectSymbolTableSection->size != 0) );
 932         dynamicSymbolTableCmd->set_indirectsymoff(hasIndirectSymbols ? _writer.indirectSymbolTableSection->fileOffset : 0);
 933         dynamicSymbolTableCmd->set_nindirectsyms( hasIndirectSymbols ? _writer.indirectSymbolTableSection->size/sizeof(uint32_t) : 0);
 934
 935         // FIX ME: support for classic relocations
 936         if ( _options.outputKind() != Options::kObjectFile ) {
 937                 bool hasExternalRelocs = ( (_writer.externalRelocationsSection != NULL) && (_writer.externalRelocationsSection->size != 0) );
 938                 dynamicSymbolTableCmd->set_extreloff(hasExternalRelocs ? _writer.externalRelocationsSection->fileOffset : 0);
 939                 dynamicSymbolTableCmd->set_nextrel(  hasExternalRelocs ? _writer.externalRelocationsSection->size/8 : 0);
 940                 bool hasLocalRelocs = ( (_writer.localRelocationsSection != NULL) && (_writer.localRelocationsSection->size != 0) );
 941                 dynamicSymbolTableCmd->set_locreloff(hasLocalRelocs ? _writer.localRelocationsSection->fileOffset : 0);
 942                 dynamicSymbolTableCmd->set_nlocrel  (hasLocalRelocs ? _writer.localRelocationsSection->size/8 : 0);
 943         }
 944         return p + sizeof(macho_dysymtab_command<P>);
 945 }
 946
 947
 948 template <typename A>
 949 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDyldInfoLoadCommand(uint8_t* p) const
 950 {
 951         // build LC_DYLD_INFO command
 952         macho_dyld_info_command<P>*  cmd = (macho_dyld_info_command<P>*)p;
 953
 954         cmd->set_cmd(LC_DYLD_INFO_ONLY);
 955         cmd->set_cmdsize(sizeof(macho_dyld_info_command<P>));
 956         if ( _writer.rebaseSection->size != 0 ) {
 957                 cmd->set_rebase_off(_writer.rebaseSection->fileOffset);
 958                 cmd->set_rebase_size(_writer.rebaseSection->size);
 959         }
 960         if ( _writer.bindingSection->size != 0 ) {
 961                 cmd->set_bind_off(_writer.bindingSection->fileOffset);
 962                 cmd->set_bind_size(_writer.bindingSection->size);
 963         }
 964         if ( _writer.weakBindingSection->size != 0 ) {
 965                 cmd->set_weak_bind_off(_writer.weakBindingSection->fileOffset);
 966                 cmd->set_weak_bind_size(_writer.weakBindingSection->size);
 967         }
 968         if ( _writer.lazyBindingSection->size != 0 ) {
 969                 cmd->set_lazy_bind_off(_writer.lazyBindingSection->fileOffset);
 970                 cmd->set_lazy_bind_size(_writer.lazyBindingSection->size);
 971         }
 972         if ( _writer.exportSection->size != 0 ) {
 973                 cmd->set_export_off(_writer.exportSection->fileOffset);
 974                 cmd->set_export_size(_writer.exportSection->size);
 975         }
 976         return p + sizeof(macho_dyld_info_command<P>);
 977 }
 978
 979
 980 template <typename A>
 981 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDyldLoadCommand(uint8_t* p) const
 982 {
 983         uint32_t sz = alignedSize(sizeof(macho_dylinker_command<P>) + strlen(_options.dyldInstallPath()) + 1);
 984         macho_dylinker_command<P>* cmd = (macho_dylinker_command<P>*)p;
 985         if ( _options.outputKind() == Options::kDyld )
 986                 cmd->set_cmd(LC_ID_DYLINKER);
 987         else
 988                 cmd->set_cmd(LC_LOAD_DYLINKER);
 989         cmd->set_cmdsize(sz);
 990         cmd->set_name_offset();
 991         strcpy((char*)&p[sizeof(macho_dylinker_command<P>)], _options.dyldInstallPath());
 992         return p + sz;
 993 }
 994
 995
 996 template <typename A>
 997 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDylibIDLoadCommand(uint8_t* p) const
 998 {
 999         uint32_t sz = alignedSize(sizeof(macho_dylib_command<P>) + strlen(_options.installPath()) + 1);
1000         macho_dylib_command<P>* cmd = (macho_dylib_command<P>*)p;
1001         cmd->set_cmd(LC_ID_DYLIB);
1002         cmd->set_cmdsize(sz);
1003         cmd->set_name_offset();
1004         cmd->set_timestamp(1);  // needs to be some constant value that is different than DylibLoadCommandsAtom uses
1005         cmd->set_current_version(_options.currentVersion32());
1006         cmd->set_compatibility_version(_options.compatibilityVersion());
1007         strcpy((char*)&p[sizeof(macho_dylib_command<P>)], _options.installPath());
1008         return p + sz;
1009 }
1010
1011 template <typename A>
1012 uint8_t* HeaderAndLoadCommandsAtom<A>::copyRoutinesLoadCommand(uint8_t* p) const
1013 {
1014         pint_t initAddr = _state.entryPoint->finalAddress();
1015         if ( _state.entryPoint->isThumb() )
1016                 initAddr |= 1ULL;
1017         macho_routines_command<P>* cmd = (macho_routines_command<P>*)p;
1018         cmd->set_cmd(macho_routines_command<P>::CMD);
1019         cmd->set_cmdsize(sizeof(macho_routines_command<P>));
1020         cmd->set_init_address(initAddr);
1021         return p + sizeof(macho_routines_command<P>);
1022 }
1023
1024
1025 template <typename A>
1026 void HeaderAndLoadCommandsAtom<A>::recopyUUIDCommand()
1027 {
1028         assert(_uuidCmdInOutputBuffer != NULL);
1029         _uuidCmdInOutputBuffer->set_uuid(_uuid);
1030 }
1031
1032
1033 template <typename A>
1034 uint8_t* HeaderAndLoadCommandsAtom<A>::copyUUIDLoadCommand(uint8_t* p) const
1035 {
1036         macho_uuid_command<P>* cmd = (macho_uuid_command<P>*)p;
1037         cmd->set_cmd(LC_UUID);
1038         cmd->set_cmdsize(sizeof(macho_uuid_command<P>));
1039         cmd->set_uuid(_uuid);
1040         _uuidCmdInOutputBuffer = cmd;    // save for later re-write by recopyUUIDCommand()
1041         return p + sizeof(macho_uuid_command<P>);
1042 }
1043
1044
1045 template <typename A>
1046 uint8_t* HeaderAndLoadCommandsAtom<A>::copyVersionLoadCommand(uint8_t* p) const
1047 {
1048         macho_version_min_command<P>* cmd = (macho_version_min_command<P>*)p;
1049         ld::MacVersionMin macVersion = _options.macosxVersionMin();
1050         ld::IOSVersionMin iOSVersion = _options.iOSVersionMin();
1051         assert( (macVersion != ld::macVersionUnset) || (iOSVersion != ld::iOSVersionUnset) );
1052         if ( macVersion != ld::macVersionUnset ) {
1053                 cmd->set_cmd(LC_VERSION_MIN_MACOSX);
1054                 cmd->set_cmdsize(sizeof(macho_version_min_command<P>));
1055                 cmd->set_version((uint32_t)macVersion);
1056                 cmd->set_sdk(_options.sdkVersion());
1057         }
1058         else {
1059                 cmd->set_cmd(LC_VERSION_MIN_IPHONEOS);
1060                 cmd->set_cmdsize(sizeof(macho_version_min_command<P>));
1061                 cmd->set_version((uint32_t)iOSVersion);
1062                 cmd->set_sdk(_options.sdkVersion());
1063         }
1064         return p + sizeof(macho_version_min_command<P>);
1065 }
1066
1067 template <typename A>
1068 uint8_t* HeaderAndLoadCommandsAtom<A>::copySourceVersionLoadCommand(uint8_t* p) const
1069 {
1070         macho_source_version_command<P>* cmd = (macho_source_version_command<P>*)p;
1071         cmd->set_cmd(LC_SOURCE_VERSION);
1072         cmd->set_cmdsize(sizeof(macho_source_version_command<P>));
1073         cmd->set_version(_options.sourceVersion());
1074         return p + sizeof(macho_source_version_command<P>);
1075 }
1076
1077
1078 template <>
1079 uint32_t HeaderAndLoadCommandsAtom<x86>::threadLoadCommandSize() const
1080 {
1081         return this->alignedSize(16 + 16*4);    // base size + i386_THREAD_STATE_COUNT * 4
1082 }
1083
1084 template <>
1085 uint8_t* HeaderAndLoadCommandsAtom<x86>::copyThreadsLoadCommand(uint8_t* p) const
1086 {
1087         assert(_state.entryPoint != NULL);
1088         pint_t start = _state.entryPoint->finalAddress();
1089         macho_thread_command<P>* cmd = (macho_thread_command<P>*)p;
1090         cmd->set_cmd(LC_UNIXTHREAD);
1091         cmd->set_cmdsize(threadLoadCommandSize());
1092         cmd->set_flavor(1);                             // i386_THREAD_STATE
1093         cmd->set_count(16);                             // i386_THREAD_STATE_COUNT;
1094         cmd->set_thread_register(10, start);
1095         if ( _options.hasCustomStack() )
1096                 cmd->set_thread_register(7, _options.customStackAddr());        // r1
1097         return p + threadLoadCommandSize();
1098 }
1099
1100 template <>
1101 uint32_t HeaderAndLoadCommandsAtom<x86_64>::threadLoadCommandSize() const
1102 {
1103         return this->alignedSize(16 + x86_THREAD_STATE64_COUNT * 4);
1104 }
1105
1106 template <>
1107 uint8_t* HeaderAndLoadCommandsAtom<x86_64>::copyThreadsLoadCommand(uint8_t* p) const
1108 {
1109         assert(_state.entryPoint != NULL);
1110         pint_t start = _state.entryPoint->finalAddress();
1111         macho_thread_command<P>* cmd = (macho_thread_command<P>*)p;
1112         cmd->set_cmd(LC_UNIXTHREAD);
1113         cmd->set_cmdsize(threadLoadCommandSize());
1114         cmd->set_flavor(x86_THREAD_STATE64);
1115         cmd->set_count(x86_THREAD_STATE64_COUNT);
1116         cmd->set_thread_register(16, start);            // rip
1117         if ( _options.hasCustomStack() )
1118                 cmd->set_thread_register(7, _options.customStackAddr());        // r1
1119         return p + threadLoadCommandSize();
1120 }
1121
1122 template <>
1123 uint32_t HeaderAndLoadCommandsAtom<arm>::threadLoadCommandSize() const
1124 {
1125         return this->alignedSize(16 + 17 * 4); // base size + ARM_THREAD_STATE_COUNT * 4
1126 }
1127
1128 template <>
1129 uint8_t* HeaderAndLoadCommandsAtom<arm>::copyThreadsLoadCommand(uint8_t* p) const
1130 {
1131         assert(_state.entryPoint != NULL);
1132         pint_t start = _state.entryPoint->finalAddress();
1133         if ( _state.entryPoint->isThumb() )
1134                 start |= 1ULL;
1135         macho_thread_command<P>* cmd = (macho_thread_command<P>*)p;
1136         cmd->set_cmd(LC_UNIXTHREAD);
1137         cmd->set_cmdsize(threadLoadCommandSize());
1138         cmd->set_flavor(1);
1139         cmd->set_count(17);
1140         cmd->set_thread_register(15, start);            // pc
1141         if ( _options.hasCustomStack() )
1142                 cmd->set_thread_register(13, _options.customStackAddr());       // sp
1143         return p + threadLoadCommandSize();
1144 }
1145
1146
1147
1148 template <typename A>
1149 uint8_t* HeaderAndLoadCommandsAtom<A>::copyEntryPointLoadCommand(uint8_t* p) const
1150 {
1151         macho_entry_point_command<P>* cmd = (macho_entry_point_command<P>*)p;
1152         cmd->set_cmd(LC_MAIN);
1153         cmd->set_cmdsize(sizeof(macho_entry_point_command<P>));
1154         assert(_state.entryPoint != NULL);
1155         pint_t start = _state.entryPoint->finalAddress();
1156         if ( _state.entryPoint->isThumb() )
1157                 start |= 1ULL;
1158         cmd->set_entryoff(start - this->finalAddress());
1159         cmd->set_stacksize(_options.hasCustomStack() ? _options.customStackSize() : 0 );
1160         return p + sizeof(macho_entry_point_command<P>);
1161 }
1162
1163
1164 template <typename A>
1165 uint8_t* HeaderAndLoadCommandsAtom<A>::copyEncryptionLoadCommand(uint8_t* p) const
1166 {
1167         macho_encryption_info_command<P>* cmd = (macho_encryption_info_command<P>*)p;
1168         cmd->set_cmd(LC_ENCRYPTION_INFO);
1169         cmd->set_cmdsize(sizeof(macho_encryption_info_command<P>));
1170         assert(_writer.encryptedTextStartOffset() != 0);
1171         assert(_writer.encryptedTextEndOffset() != 0);
1172         cmd->set_cryptoff(_writer.encryptedTextStartOffset());
1173         cmd->set_cryptsize(_writer.encryptedTextEndOffset()-_writer.encryptedTextStartOffset());
1174         cmd->set_cryptid(0);
1175         return p + sizeof(macho_encryption_info_command<P>);
1176 }
1177
1178
1179 template <typename A>
1180 uint8_t* HeaderAndLoadCommandsAtom<A>::copySplitSegInfoLoadCommand(uint8_t* p) const
1181 {
1182         macho_linkedit_data_command<P>* cmd = (macho_linkedit_data_command<P>*)p;
1183         cmd->set_cmd(LC_SEGMENT_SPLIT_INFO);
1184         cmd->set_cmdsize(sizeof(macho_linkedit_data_command<P>));
1185         cmd->set_dataoff(_writer.splitSegInfoSection->fileOffset);
1186         cmd->set_datasize(_writer.splitSegInfoSection->size);
1187         return p + sizeof(macho_linkedit_data_command<P>);
1188 }
1189
1190
1191 template <typename A>
1192 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDylibLoadCommand(uint8_t* p, const ld::dylib::File* dylib) const
1193 {
1194         uint32_t sz = alignedSize(sizeof(macho_dylib_command<P>) + strlen(dylib->installPath()) + 1);
1195         macho_dylib_command<P>* cmd = (macho_dylib_command<P>*)p;
1196         if ( dylib->willBeLazyLoadedDylib() )
1197                 cmd->set_cmd(LC_LAZY_LOAD_DYLIB);
1198         else if ( dylib->forcedWeakLinked() || dylib->allSymbolsAreWeakImported() )
1199                 cmd->set_cmd(LC_LOAD_WEAK_DYLIB);
1200         else if ( dylib->willBeReExported() && _options.useSimplifiedDylibReExports() )
1201                 cmd->set_cmd(LC_REEXPORT_DYLIB);
1202         else if ( dylib->willBeUpwardDylib() && _options.useUpwardDylibs() )
1203                 cmd->set_cmd(LC_LOAD_UPWARD_DYLIB);
1204         else
1205                 cmd->set_cmd(LC_LOAD_DYLIB);
1206         cmd->set_cmdsize(sz);
1207         cmd->set_timestamp(2);  // needs to be some constant value that is different than DylibIDLoadCommandsAtom uses
1208         cmd->set_current_version(dylib->currentVersion());
1209         cmd->set_compatibility_version(dylib->compatibilityVersion());
1210         cmd->set_name_offset();
1211         strcpy((char*)&p[sizeof(macho_dylib_command<P>)], dylib->installPath());
1212         return p + sz;
1213 }
1214
1215 template <typename A>
1216 uint8_t* HeaderAndLoadCommandsAtom<A>::copyRPathLoadCommand(uint8_t* p, const char* path) const
1217 {
1218         uint32_t sz = alignedSize(sizeof(macho_rpath_command<P>) + strlen(path) + 1);
1219         macho_rpath_command<P>* cmd = (macho_rpath_command<P>*)p;
1220         cmd->set_cmd(LC_RPATH);
1221         cmd->set_cmdsize(sz);
1222         cmd->set_path_offset();
1223         strcpy((char*)&p[sizeof(macho_rpath_command<P>)], path);
1224         return p + sz;
1225 }
1226
1227 template <typename A>
1228 uint8_t* HeaderAndLoadCommandsAtom<A>::copySubFrameworkLoadCommand(uint8_t* p) const
1229 {
1230         const char* umbrellaName = _options.umbrellaName();
1231         uint32_t sz = alignedSize(sizeof(macho_sub_framework_command<P>) + strlen(umbrellaName) + 1);
1232         macho_sub_framework_command<P>* cmd = (macho_sub_framework_command<P>*)p;
1233         cmd->set_cmd(LC_SUB_FRAMEWORK);
1234         cmd->set_cmdsize(sz);
1235         cmd->set_umbrella_offset();
1236         strcpy((char*)&p[sizeof(macho_sub_framework_command<P>)], umbrellaName);
1237         return p + sz;
1238 }
1239
1240
1241 template <typename A>
1242 uint8_t* HeaderAndLoadCommandsAtom<A>::copyAllowableClientLoadCommand(uint8_t* p, const char* client) const
1243 {
1244         uint32_t sz = alignedSize(sizeof(macho_sub_client_command<P>) + strlen(client) + 1);
1245         macho_sub_client_command<P>* cmd = (macho_sub_client_command<P>*)p;
1246         cmd->set_cmd(LC_SUB_CLIENT);
1247         cmd->set_cmdsize(sz);
1248         cmd->set_client_offset();
1249         strcpy((char*)&p[sizeof(macho_sub_client_command<P>)], client);
1250         return p + sz;
1251 }
1252
1253 template <typename A>
1254 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDyldEnvLoadCommand(uint8_t* p, const char* env) const
1255 {
1256         uint32_t sz = alignedSize(sizeof(macho_dylinker_command<P>) + strlen(env) + 1);
1257         macho_dylinker_command<P>* cmd = (macho_dylinker_command<P>*)p;
1258         cmd->set_cmd(LC_DYLD_ENVIRONMENT);
1259         cmd->set_cmdsize(sz);
1260         cmd->set_name_offset();
1261         strcpy((char*)&p[sizeof(macho_dylinker_command<P>)], env);
1262         return p + sz;
1263 }
1264
1265 template <typename A>
1266 uint8_t* HeaderAndLoadCommandsAtom<A>::copySubUmbrellaLoadCommand(uint8_t* p, const char* nm) const
1267 {
1268         uint32_t sz = alignedSize(sizeof(macho_sub_umbrella_command<P>) + strlen(nm) + 1);
1269         macho_sub_umbrella_command<P>* cmd = (macho_sub_umbrella_command<P>*)p;
1270         cmd->set_cmd(LC_SUB_UMBRELLA);
1271         cmd->set_cmdsize(sz);
1272         cmd->set_sub_umbrella_offset();
1273         strcpy((char*)&p[sizeof(macho_sub_umbrella_command<P>)], nm);
1274         return p + sz;
1275 }
1276
1277 template <typename A>
1278 uint8_t* HeaderAndLoadCommandsAtom<A>::copySubLibraryLoadCommand(uint8_t* p, const char* nm) const
1279 {
1280         uint32_t sz = alignedSize(sizeof(macho_sub_library_command<P>) + strlen(nm) + 1);
1281         macho_sub_library_command<P>* cmd = (macho_sub_library_command<P>*)p;
1282         cmd->set_cmd(LC_SUB_LIBRARY);
1283         cmd->set_cmdsize(sz);
1284         cmd->set_sub_library_offset();
1285         strcpy((char*)&p[sizeof(macho_sub_library_command<P>)], nm);
1286         return p + sz;
1287 }
1288
1289 template <typename A>
1290 uint8_t* HeaderAndLoadCommandsAtom<A>::copyFunctionStartsLoadCommand(uint8_t* p) const
1291 {
1292         macho_linkedit_data_command<P>* cmd = (macho_linkedit_data_command<P>*)p;
1293         cmd->set_cmd(LC_FUNCTION_STARTS);
1294         cmd->set_cmdsize(sizeof(macho_linkedit_data_command<P>));
1295         cmd->set_dataoff(_writer.functionStartsSection->fileOffset);
1296         cmd->set_datasize(_writer.functionStartsSection->size);
1297         return p + sizeof(macho_linkedit_data_command<P>);
1298 }
1299
1300
1301 template <typename A>
1302 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDataInCodeLoadCommand(uint8_t* p) const
1303 {
1304         macho_linkedit_data_command<P>* cmd = (macho_linkedit_data_command<P>*)p;
1305         cmd->set_cmd(LC_DATA_IN_CODE);
1306         cmd->set_cmdsize(sizeof(macho_linkedit_data_command<P>));
1307         cmd->set_dataoff(_writer.dataInCodeSection->fileOffset);
1308         cmd->set_datasize(_writer.dataInCodeSection->size);
1309         return p + sizeof(macho_linkedit_data_command<P>);
1310 }
1311
1312
1313 template <typename A>
1314 uint8_t* HeaderAndLoadCommandsAtom<A>::copyDependentDRLoadCommand(uint8_t* p) const
1315 {
1316         macho_linkedit_data_command<P>* cmd = (macho_linkedit_data_command<P>*)p;
1317         cmd->set_cmd(LC_DYLIB_CODE_SIGN_DRS);
1318         cmd->set_cmdsize(sizeof(macho_linkedit_data_command<P>));
1319         cmd->set_dataoff(_writer.dependentDRsSection->fileOffset);
1320         cmd->set_datasize(_writer.dependentDRsSection->size);
1321         return p + sizeof(macho_linkedit_data_command<P>);
1322 }
1323
1324
1325 template <typename A>
1326 void HeaderAndLoadCommandsAtom<A>::copyRawContent(uint8_t buffer[]) const
1327 {
1328         macho_header<P>* mh = (macho_header<P>*)buffer;
1329         bzero(buffer, this->size());
1330
1331         // copy mach_header
1332         mh->set_magic(this->magic());
1333         mh->set_cputype(this->cpuType());
1334         mh->set_cpusubtype(this->cpuSubType());
1335         mh->set_filetype(this->fileType());
1336         mh->set_ncmds(this->commandsCount());
1337         mh->set_sizeofcmds(this->size()-sizeof(macho_header<P>));
1338         mh->set_flags(this->flags());
1339
1340         // copy load commands
1341         uint8_t* p = &buffer[sizeof(macho_header<P>)];
1342
1343         if ( _options.outputKind() == Options::kObjectFile )
1344                 p = this->copySingleSegmentLoadCommand(p);
1345         else
1346                 p = this->copySegmentLoadCommands(p);
1347
1348         if ( _hasDylibIDLoadCommand )
1349                 p = this->copyDylibIDLoadCommand(p);
1350
1351         if ( _hasDyldInfoLoadCommand )
1352                 p = this->copyDyldInfoLoadCommand(p);
1353
1354         if ( _hasSymbolTableLoadCommand )
1355                 p = this->copySymbolTableLoadCommand(p);
1356
1357         if ( _hasDynamicSymbolTableLoadCommand )
1358                 p = this->copyDynamicSymbolTableLoadCommand(p);
1359
1360         if ( _hasDyldLoadCommand )
1361                 p = this->copyDyldLoadCommand(p);
1362
1363         if ( _hasRoutinesLoadCommand )
1364                 p = this->copyRoutinesLoadCommand(p);
1365
1366         if ( _hasUUIDLoadCommand )
1367                 p = this->copyUUIDLoadCommand(p);
1368
1369         if ( _hasVersionLoadCommand )
1370                 p = this->copyVersionLoadCommand(p);
1371
1372         if ( _hasSourceVersionLoadCommand )
1373                 p = this->copySourceVersionLoadCommand(p);
1374
1375         if ( _hasThreadLoadCommand )
1376                 p = this->copyThreadsLoadCommand(p);
1377
1378         if ( _hasEntryPointLoadCommand )
1379                 p = this->copyEntryPointLoadCommand(p);
1380
1381         if ( _hasEncryptionLoadCommand )
1382                 p = this->copyEncryptionLoadCommand(p);
1383
1384         if ( _hasSplitSegInfoLoadCommand )
1385                 p = this->copySplitSegInfoLoadCommand(p);
1386
1387         for(uint32_t ord=1; ord <= _writer.dylibCount(); ++ord) {
1388                 p = this->copyDylibLoadCommand(p, _writer.dylibByOrdinal(ord));
1389         }
1390
1391         if ( _hasRPathLoadCommands ) {
1392                 const std::vector<const char*>& rpaths = _options.rpaths();
1393                 for (std::vector<const char*>::const_iterator it = rpaths.begin(); it != rpaths.end(); ++it) {
1394                         p = this->copyRPathLoadCommand(p, *it);
1395                 }
1396         }
1397
1398         if ( _hasSubFrameworkLoadCommand )
1399                 p = this->copySubFrameworkLoadCommand(p);
1400
1401         for (std::vector<const char*>::const_iterator it = _subLibraryNames.begin(); it != _subLibraryNames.end(); ++it) {
1402                 p = this->copySubLibraryLoadCommand(p, *it);
1403         }
1404
1405         for (std::vector<const char*>::const_iterator it = _subUmbrellaNames.begin(); it != _subUmbrellaNames.end(); ++it) {
1406                 p = this->copySubUmbrellaLoadCommand(p, *it);
1407         }
1408
1409         if ( _allowableClientLoadCommmandsCount != 0 ) {
1410                 const std::vector<const char*>& clients = _options.allowableClients();
1411                 for (std::vector<const char*>::const_iterator it = clients.begin(); it != clients.end(); ++it) {
1412                         p = this->copyAllowableClientLoadCommand(p, *it);
1413                 }
1414         }
1415
1416         if ( _dyldEnvironExrasCount != 0 ) {
1417                 const std::vector<const char*>& extras = _options.dyldEnvironExtras();
1418                 for (std::vector<const char*>::const_iterator it = extras.begin(); it != extras.end(); ++it) {
1419                         p = this->copyDyldEnvLoadCommand(p, *it);
1420                 }
1421         }
1422
1423         if ( _hasFunctionStartsLoadCommand )
1424                 p = this->copyFunctionStartsLoadCommand(p);
1425
1426         if ( _hasDataInCodeLoadCommand )
1427                 p = this->copyDataInCodeLoadCommand(p);
1428
1429         if ( _hasDependentDRInfo )
1430                 p = this->copyDependentDRLoadCommand(p);
1431
1432 }
1433
1434
1435
1436 } // namespace tool
1437 } // namespace ld
1438
1439 #endif // __HEADER_LOAD_COMMANDS_HPP__