--- /dev/null
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-*
+ *
+ * Copyright (c) 2009 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef __HEADER_LOAD_COMMANDS_HPP__
+#define __HEADER_LOAD_COMMANDS_HPP__
+
+#include <stdlib.h>
+#include <limits.h>
+#include <unistd.h>
+#include <mach-o/loader.h>
+
+#include <vector>
+
+#include "MachOFileAbstraction.hpp"
+#include "Options.h"
+#include "ld.hpp"
+
+namespace ld {
+namespace tool {
+
+class HeaderAndLoadCommandsAbtract : public ld::Atom
+{
+public:
+ HeaderAndLoadCommandsAbtract(const ld::Section& sect, ld::Atom::Definition d,
+ ld::Atom::Combine c, ld::Atom::Scope s, ld::Atom::ContentType ct,
+ ld::Atom::SymbolTableInclusion i, bool dds, bool thumb, bool al,
+ ld::Atom::Alignment a) : ld::Atom(sect, d, c, s, ct, i, dds, thumb, al, a) { }
+
+ virtual void setUUID(const uint8_t digest[16]) = 0;
+ virtual void recopyUUIDCommand() = 0;
+};
+
+template <typename A>
+class HeaderAndLoadCommandsAtom : public HeaderAndLoadCommandsAbtract
+{
+public:
+ HeaderAndLoadCommandsAtom(const Options& opts, ld::Internal& state,
+ OutputFile& writer);
+
+ // overrides of ld::Atom
+ virtual ld::File* file() const { return NULL; }
+ virtual bool translationUnitSource(const char** dir, const char** nm) const
+ { return false; }
+ virtual const char* name() const { return "mach-o header and load commands"; }
+ virtual uint64_t size() const;
+ virtual uint64_t objectAddress() const { return _address; }
+ virtual void copyRawContent(uint8_t buffer[]) const;
+
+ // overrides of HeaderAndLoadCommandsAbtract
+ virtual void setUUID(const uint8_t digest[16]) { memcpy(_uuid, digest, 16); }
+ virtual void recopyUUIDCommand();
+
+private:
+ typedef typename A::P P;
+ typedef typename A::P::E E;
+ typedef typename A::P::uint_t pint_t;
+
+ unsigned int nonHiddenSectionCount() const;
+ unsigned int segmentCount() const;
+ static uint32_t alignedSize(uint32_t x);
+ uint32_t magic() const;
+ uint32_t cpuType() const;
+ uint32_t cpuSubType() const;
+ uint32_t flags() const;
+ uint32_t fileType() const;
+ uint32_t commandsCount() const;
+ uint32_t threadLoadCommandSize() const;
+ uint8_t* copySingleSegmentLoadCommand(uint8_t* p) const;
+ uint8_t* copySegmentLoadCommands(uint8_t* p) const;
+ uint8_t* copyDyldInfoLoadCommand(uint8_t* p) const;
+ uint8_t* copySymbolTableLoadCommand(uint8_t* p) const;
+ uint8_t* copyDynamicSymbolTableLoadCommand(uint8_t* p) const;
+ uint8_t* copyDyldLoadCommand(uint8_t* p) const;
+ uint8_t* copyDylibIDLoadCommand(uint8_t* p) const;
+ uint8_t* copyRoutinesLoadCommand(uint8_t* p) const;
+ uint8_t* copyUUIDLoadCommand(uint8_t* p) const;
+ uint8_t* copyVersionLoadCommand(uint8_t* p) const;
+ uint8_t* copyThreadsLoadCommand(uint8_t* p) const;
+ uint8_t* copyEncryptionLoadCommand(uint8_t* p) const;
+ uint8_t* copySplitSegInfoLoadCommand(uint8_t* p) const;
+ uint8_t* copyDylibLoadCommand(uint8_t* p, const ld::dylib::File*) const;
+ uint8_t* copyRPathLoadCommand(uint8_t* p, const char*) const;
+ uint8_t* copySubFrameworkLoadCommand(uint8_t* p) const;
+ uint8_t* copyAllowableClientLoadCommand(uint8_t* p, const char* client) const;
+ uint8_t* copySubLibraryLoadCommand(uint8_t* p, const char* name) const;
+ uint8_t* copySubUmbrellaLoadCommand(uint8_t* p, const char* name) const;
+ uint8_t* copyFunctionStartsLoadCommand(uint8_t* p) const;
+ uint8_t* copyDyldEnvLoadCommand(uint8_t* p, const char* env) const;
+
+ uint32_t sectionFlags(ld::Internal::FinalSection* sect) const;
+ bool sectionTakesNoDiskSpace(ld::Internal::FinalSection* sect) const;
+
+
+ const Options& _options;
+ ld::Internal& _state;
+ OutputFile& _writer;
+ pint_t _address;
+ bool _hasDyldInfoLoadCommand;
+ bool _hasDyldLoadCommand;
+ bool _hasDylibIDLoadCommand;
+ bool _hasThreadLoadCommand;
+ bool _hasEncryptionLoadCommand;
+ bool _hasSplitSegInfoLoadCommand;
+ bool _hasRoutinesLoadCommand;
+ bool _hasUUIDLoadCommand;
+ bool _hasSymbolTableLoadCommand;
+ bool _hasDynamicSymbolTableLoadCommand;
+ bool _hasRPathLoadCommands;
+ bool _hasSubFrameworkLoadCommand;
+ bool _hasVersionLoadCommand;
+ bool _hasFunctionStartsLoadCommand;
+ uint32_t _dylibLoadCommmandsCount;
+ uint32_t _allowableClientLoadCommmandsCount;
+ uint32_t _dyldEnvironExrasCount;
+ std::vector<const char*> _subLibraryNames;
+ std::vector<const char*> _subUmbrellaNames;
+ uint8_t _uuid[16];
+ mutable macho_uuid_command<P>* _uuidCmdInOutputBuffer;
+
+ static ld::Section _s_section;
+ static ld::Section _s_preload_section;
+};
+
+template <typename A>
+ld::Section HeaderAndLoadCommandsAtom<A>::_s_section("__TEXT", "__mach_header", ld::Section::typeMachHeader, true);
+template <typename A>
+ld::Section HeaderAndLoadCommandsAtom<A>::_s_preload_section("__HEADER", "__mach_header", ld::Section::typeMachHeader, true);
+
+
+template <typename A>
+HeaderAndLoadCommandsAtom<A>::HeaderAndLoadCommandsAtom(const Options& opts, ld::Internal& state, OutputFile& writer)
+ : HeaderAndLoadCommandsAbtract((opts.outputKind() == Options::kPreload) ? _s_preload_section : _s_section,
+ ld::Atom::definitionRegular, ld::Atom::combineNever,
+ ld::Atom::scopeTranslationUnit, ld::Atom::typeUnclassified,
+ ld::Atom::symbolTableNotIn, false, false, false,
+ (opts.outputKind() == Options::kPreload) ? ld::Atom::Alignment(0) : ld::Atom::Alignment(12) ),
+ _options(opts), _state(state), _writer(writer), _address(0), _uuidCmdInOutputBuffer(NULL)
+{
+ bzero(_uuid, 16);
+ _hasDyldInfoLoadCommand = opts.makeCompressedDyldInfo();
+ _hasDyldLoadCommand = ((opts.outputKind() == Options::kDynamicExecutable) || (_options.outputKind() == Options::kDyld));
+ _hasDylibIDLoadCommand = (opts.outputKind() == Options::kDynamicLibrary);
+ _hasThreadLoadCommand = _hasDyldLoadCommand || (opts.outputKind() == Options::kStaticExecutable)
+ || (opts.outputKind() == Options::kPreload)
+ || (opts.outputKind() == Options::kDyld);
+ _hasEncryptionLoadCommand = opts.makeEncryptable();
+ _hasSplitSegInfoLoadCommand = opts.sharedRegionEligible();
+ _hasRoutinesLoadCommand = (opts.initFunctionName() != NULL);
+ _hasSymbolTableLoadCommand = true;
+ _hasUUIDLoadCommand = (opts.UUIDMode() != Options::kUUIDNone);
+ switch ( opts.outputKind() ) {
+ case Options::kDynamicExecutable:
+ case Options::kDynamicLibrary:
+ case Options::kDynamicBundle:
+ case Options::kDyld:
+ case Options::kKextBundle:
+ _hasDynamicSymbolTableLoadCommand = true;
+ break;
+ case Options::kObjectFile:
+ if ( ! state.someObjectFileHasDwarf )
+ _hasUUIDLoadCommand = false;
+ _hasDynamicSymbolTableLoadCommand = false;
+ for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
+ if ( (*it)->type() == ld::Section::typeNonLazyPointer ) {
+ _hasDynamicSymbolTableLoadCommand = true;
+ break;
+ }
+ }
+ break;
+ case Options::kStaticExecutable:
+ _hasDynamicSymbolTableLoadCommand = false;
+ break;
+ case Options::kPreload:
+ _hasDynamicSymbolTableLoadCommand = opts.positionIndependentExecutable();
+ break;
+ }
+ _hasRPathLoadCommands = (_options.rpaths().size() != 0);
+ _hasSubFrameworkLoadCommand = (_options.umbrellaName() != NULL);
+ _hasVersionLoadCommand = _options.addVersionLoadCommand();
+ _hasFunctionStartsLoadCommand = _options.addFunctionStarts();
+ _dylibLoadCommmandsCount = _writer.dylibCount();
+ _allowableClientLoadCommmandsCount = _options.allowableClients().size();
+ _dyldEnvironExrasCount = _options.dyldEnvironExtras().size();
+ if ( ! _options.useSimplifiedDylibReExports() ) {
+ // target OS does not support LC_REEXPORT_DYLIB, so use old complicated load commands
+ for(uint32_t ord=1; ord <= _writer.dylibCount(); ++ord) {
+ const ld::dylib::File* dylib = _writer.dylibByOrdinal(ord);
+ if ( dylib->willBeReExported() ) {
+ // if child says it is an sub-framework of the image being created, then nothing to do here
+ bool isSubFramework = false;
+ const char* childInUmbrella = dylib->parentUmbrella();
+ if ( childInUmbrella != NULL ) {
+ const char* myLeaf = strrchr(_options.installPath(), '/');
+ if ( myLeaf != NULL ) {
+ if ( strcmp(childInUmbrella, &myLeaf[1]) == 0 )
+ isSubFramework = true;
+ }
+ }
+ // LC_SUB_FRAMEWORK is in child, so do nothing in parent
+ if ( ! isSubFramework ) {
+ // this dylib also needs a sub_x load command
+ bool isFrameworkReExport = false;
+ const char* lastSlash = strrchr(dylib->installPath(), '/');
+ if ( lastSlash != NULL ) {
+ char frameworkName[strlen(lastSlash)+20];
+ sprintf(frameworkName, "/%s.framework/", &lastSlash[1]);
+ isFrameworkReExport = (strstr(dylib->installPath(), frameworkName) != NULL);
+ }
+ if ( isFrameworkReExport ) {
+ // needs a LC_SUB_UMBRELLA command
+ _subUmbrellaNames.push_back(&lastSlash[1]);
+ }
+ else {
+ // needs a LC_SUB_LIBRARY command
+ const char* nameStart = &lastSlash[1];
+ if ( lastSlash == NULL )
+ nameStart = dylib->installPath();
+ int len = strlen(nameStart);
+ const char* dot = strchr(nameStart, '.');
+ if ( dot != NULL )
+ len = dot - nameStart;
+ char* subLibName = new char[len+1];
+ strlcpy(subLibName, nameStart, len+1);
+ _subLibraryNames.push_back(subLibName);
+ }
+ }
+ }
+ }
+ }
+}
+
+template <typename A>
+uint32_t HeaderAndLoadCommandsAtom<A>::alignedSize(uint32_t size)
+{
+ if ( sizeof(pint_t) == 4 )
+ return ((size+3) & (-4)); // 4-byte align all load commands for 32-bit mach-o
+ else
+ return ((size+7) & (-8)); // 8-byte align all load commands for 64-bit mach-o
+}
+
+
+template <typename A>
+unsigned int HeaderAndLoadCommandsAtom<A>::nonHiddenSectionCount() const
+{
+ unsigned int count = 0;
+ for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
+ if ( ! (*it)->isSectionHidden() && ((*it)->type() != ld::Section::typeTentativeDefs) )
+ ++count;
+ }
+ return count;
+}
+
+template <typename A>
+unsigned int HeaderAndLoadCommandsAtom<A>::segmentCount() const
+{
+ if ( _options.outputKind() == Options::kObjectFile ) {
+ // .o files have one anonymous segment that contains all sections
+ return 1;
+ }
+
+ unsigned int count = 0;
+ const char* lastSegName = "";
+ for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
+ if ( _options.outputKind() == Options::kPreload ) {
+ if ( (*it)->type() == ld::Section::typeMachHeader )
+ continue; // for -preload, don't put hidden __HEADER segment into output
+ if ( (*it)->type() == ld::Section::typeLinkEdit )
+ continue; // for -preload, don't put hidden __LINKEDIT segment into output
+ }
+ if ( strcmp(lastSegName, (*it)->segmentName()) != 0 ) {
+ lastSegName = (*it)->segmentName();
+ ++count;
+ }
+ }
+ return count;
+}
+
+
+template <typename A>
+uint64_t HeaderAndLoadCommandsAtom<A>::size() const
+{
+ uint32_t sz = sizeof(macho_header<P>);
+
+ sz += sizeof(macho_segment_command<P>) * this->segmentCount();
+ sz += sizeof(macho_section<P>) * this->nonHiddenSectionCount();
+
+ if ( _hasDylibIDLoadCommand )
+ sz += alignedSize(sizeof(macho_dylib_command<P>) + strlen(_options.installPath()) + 1);
+
+ if ( _hasDyldInfoLoadCommand )
+ sz += sizeof(macho_dyld_info_command<P>);
+
+ if ( _hasSymbolTableLoadCommand )
+ sz += sizeof(macho_symtab_command<P>);
+
+ if ( _hasDynamicSymbolTableLoadCommand )
+ sz += sizeof(macho_dysymtab_command<P>);
+
+ if ( _hasDyldLoadCommand )
+ sz += alignedSize(sizeof(macho_dylinker_command<P>) + strlen(_options.dyldInstallPath()) + 1);
+
+ if ( _hasRoutinesLoadCommand )
+ sz += sizeof(macho_routines_command<P>);
+
+ if ( _hasUUIDLoadCommand )
+ sz += sizeof(macho_uuid_command<P>);
+
+ if ( _hasVersionLoadCommand )
+ sz += sizeof(macho_version_min_command<P>);
+
+ if ( _hasThreadLoadCommand )
+ sz += this->threadLoadCommandSize();
+
+ if ( _hasEncryptionLoadCommand )
+ sz += sizeof(macho_encryption_info_command<P>);
+
+ if ( _hasSplitSegInfoLoadCommand )
+ sz += sizeof(macho_linkedit_data_command<P>);
+
+ for(uint32_t ord=1; ord <= _writer.dylibCount(); ++ord) {
+ sz += alignedSize(sizeof(macho_dylib_command<P>) + strlen(_writer.dylibByOrdinal(ord)->installPath()) + 1);
+ }
+
+ if ( _hasRPathLoadCommands ) {
+ const std::vector<const char*>& rpaths = _options.rpaths();
+ for (std::vector<const char*>::const_iterator it = rpaths.begin(); it != rpaths.end(); ++it) {
+ sz += alignedSize(sizeof(macho_rpath_command<P>) + strlen(*it) + 1);
+ }
+ }
+
+ if ( _hasSubFrameworkLoadCommand )
+ sz += alignedSize(sizeof(macho_sub_framework_command<P>) + strlen(_options.umbrellaName()) + 1);
+
+ for (std::vector<const char*>::const_iterator it = _subLibraryNames.begin(); it != _subLibraryNames.end(); ++it) {
+ sz += alignedSize(sizeof(macho_sub_library_command<P>) + strlen(*it) + 1);
+ }
+
+ for (std::vector<const char*>::const_iterator it = _subUmbrellaNames.begin(); it != _subUmbrellaNames.end(); ++it) {
+ sz += alignedSize(sizeof(macho_sub_umbrella_command<P>) + strlen(*it) + 1);
+ }
+
+ if ( _allowableClientLoadCommmandsCount != 0 ) {
+ const std::vector<const char*>& clients = _options.allowableClients();
+ for (std::vector<const char*>::const_iterator it = clients.begin(); it != clients.end(); ++it) {
+ sz += alignedSize(sizeof(macho_sub_client_command<P>) + strlen(*it) + 1);
+ }
+ }
+
+ if ( _dyldEnvironExrasCount != 0 ) {
+ const std::vector<const char*>& extras = _options.dyldEnvironExtras();
+ for (std::vector<const char*>::const_iterator it = extras.begin(); it != extras.end(); ++it) {
+ sz += alignedSize(sizeof(macho_dylinker_command<P>) + strlen(*it) + 1);
+ }
+ }
+
+ if ( _hasFunctionStartsLoadCommand )
+ sz += sizeof(macho_linkedit_data_command<P>);
+
+ return sz;
+}
+
+template <typename A>
+uint32_t HeaderAndLoadCommandsAtom<A>::commandsCount() const
+{
+ uint32_t count = this->segmentCount();
+
+ if ( _hasDylibIDLoadCommand )
+ ++count;
+
+ if ( _hasDyldInfoLoadCommand )
+ ++count;
+
+ if ( _hasSymbolTableLoadCommand )
+ ++count;
+
+ if ( _hasDynamicSymbolTableLoadCommand )
+ ++count;
+
+ if ( _hasDyldLoadCommand )
+ ++count;
+
+ if ( _hasRoutinesLoadCommand )
+ ++count;
+
+ if ( _hasUUIDLoadCommand )
+ ++count;
+
+ if ( _hasVersionLoadCommand )
+ ++count;
+
+ if ( _hasThreadLoadCommand )
+ ++count;
+
+ if ( _hasEncryptionLoadCommand )
+ ++count;
+
+ if ( _hasSplitSegInfoLoadCommand )
+ ++count;
+
+ count += _dylibLoadCommmandsCount;
+
+ count += _options.rpaths().size();
+
+ if ( _hasSubFrameworkLoadCommand )
+ ++count;
+
+ count += _subLibraryNames.size();
+
+ count += _subUmbrellaNames.size();
+
+ count += _allowableClientLoadCommmandsCount;
+
+ count += _dyldEnvironExrasCount;
+
+ if ( _hasFunctionStartsLoadCommand )
+ ++count;
+
+ return count;
+}
+
+template <typename A>
+uint32_t HeaderAndLoadCommandsAtom<A>::fileType() const
+{
+ switch ( _options.outputKind() ) {
+ case Options::kDynamicExecutable:
+ case Options::kStaticExecutable:
+ return MH_EXECUTE;
+ case Options::kDynamicLibrary:
+ return MH_DYLIB;
+ case Options::kDynamicBundle:
+ return MH_BUNDLE;
+ case Options::kObjectFile:
+ return MH_OBJECT;
+ case Options::kDyld:
+ return MH_DYLINKER;
+ case Options::kPreload:
+ return MH_PRELOAD;
+ case Options::kKextBundle:
+ return MH_KEXT_BUNDLE;
+ }
+ throw "unknonwn mach-o file type";
+}
+
+template <typename A>
+uint32_t HeaderAndLoadCommandsAtom<A>::flags() const
+{
+ uint32_t bits = 0;
+ if ( _options.outputKind() == Options::kObjectFile ) {
+ if ( _state.allObjectFilesScatterable )
+ bits = MH_SUBSECTIONS_VIA_SYMBOLS;
+ }
+ else {
+ if ( _options.outputKind() == Options::kStaticExecutable ) {
+ bits |= MH_NOUNDEFS;
+ }
+ else if ( _options.outputKind() == Options::kPreload ) {
+ bits |= MH_NOUNDEFS;
+ if ( _options.positionIndependentExecutable() )
+ bits |= MH_PIE;
+ }
+ else {
+ bits = MH_DYLDLINK;
+ switch ( _options.nameSpace() ) {
+ case Options::kTwoLevelNameSpace:
+ bits |= MH_TWOLEVEL | MH_NOUNDEFS;
+ break;
+ case Options::kFlatNameSpace:
+ break;
+ case Options::kForceFlatNameSpace:
+ bits |= MH_FORCE_FLAT;
+ break;
+ }
+ if ( _writer.hasWeakExternalSymbols || _writer.overridesWeakExternalSymbols )
+ bits |= MH_WEAK_DEFINES;
+ if ( _writer.usesWeakExternalSymbols || _writer.hasWeakExternalSymbols )
+ bits |= MH_BINDS_TO_WEAK;
+ if ( _options.prebind() )
+ bits |= MH_PREBOUND;
+ if ( _options.splitSeg() )
+ bits |= MH_SPLIT_SEGS;
+ if ( (_options.outputKind() == Options::kDynamicLibrary)
+ && _writer._noReExportedDylibs
+ && _options.useSimplifiedDylibReExports() ) {
+ bits |= MH_NO_REEXPORTED_DYLIBS;
+ }
+ if ( _options.positionIndependentExecutable() && ! _writer.pieDisabled )
+ bits |= MH_PIE;
+ if ( _options.markAutoDeadStripDylib() )
+ bits |= MH_DEAD_STRIPPABLE_DYLIB;
+ if ( _writer.hasThreadLocalVariableDefinitions )
+ bits |= MH_HAS_TLV_DESCRIPTORS;
+ if ( _options.hasNonExecutableHeap() )
+ bits |= MH_NO_HEAP_EXECUTION;
+ }
+ if ( _options.hasExecutableStack() )
+ bits |= MH_ALLOW_STACK_EXECUTION;
+ }
+ return bits;
+}
+
+template <> uint32_t HeaderAndLoadCommandsAtom<ppc>::magic() const { return MH_MAGIC; }
+template <> uint32_t HeaderAndLoadCommandsAtom<ppc64>::magic() const { return MH_MAGIC_64; }
+template <> uint32_t HeaderAndLoadCommandsAtom<x86>::magic() const { return MH_MAGIC; }
+template <> uint32_t HeaderAndLoadCommandsAtom<x86_64>::magic() const { return MH_MAGIC_64; }
+template <> uint32_t HeaderAndLoadCommandsAtom<arm>::magic() const { return MH_MAGIC; }
+
+template <> uint32_t HeaderAndLoadCommandsAtom<ppc>::cpuType() const { return CPU_TYPE_POWERPC; }
+template <> uint32_t HeaderAndLoadCommandsAtom<ppc64>::cpuType() const { return CPU_TYPE_POWERPC64; }
+template <> uint32_t HeaderAndLoadCommandsAtom<x86>::cpuType() const { return CPU_TYPE_I386; }
+template <> uint32_t HeaderAndLoadCommandsAtom<x86_64>::cpuType() const { return CPU_TYPE_X86_64; }
+template <> uint32_t HeaderAndLoadCommandsAtom<arm>::cpuType() const { return CPU_TYPE_ARM; }
+
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<ppc>::cpuSubType() const
+{
+ return _state.cpuSubType;
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<ppc64>::cpuSubType() const
+{
+ if ( (_options.outputKind() == Options::kDynamicExecutable) && (_options.macosxVersionMin() >= ld::mac10_5) )
+ return (CPU_SUBTYPE_POWERPC_ALL | 0x80000000);
+ else
+ return CPU_SUBTYPE_POWERPC_ALL;
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<x86>::cpuSubType() const
+{
+ return CPU_SUBTYPE_I386_ALL;
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<x86_64>::cpuSubType() const
+{
+ if ( (_options.outputKind() == Options::kDynamicExecutable) && (_options.macosxVersionMin() >= ld::mac10_5) )
+ return (CPU_SUBTYPE_X86_64_ALL | 0x80000000);
+ else
+ return CPU_SUBTYPE_X86_64_ALL;
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<arm>::cpuSubType() const
+{
+ return _state.cpuSubType;
+}
+
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySingleSegmentLoadCommand(uint8_t* p) const
+{
+ // in .o files there is just one segment load command with a blank name
+ // and all sections under it
+ macho_segment_command<P>* cmd = (macho_segment_command<P>*)p;
+ cmd->set_cmd(macho_segment_command<P>::CMD);
+ cmd->set_segname("");
+ cmd->set_vmaddr(_options.baseAddress());
+ cmd->set_vmsize(0); // updated after sections set
+ cmd->set_fileoff(0); // updated after sections set
+ cmd->set_filesize(0); // updated after sections set
+ cmd->set_maxprot(VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
+ cmd->set_initprot(VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
+ cmd->set_nsects(this->nonHiddenSectionCount());
+ cmd->set_flags(0);
+ // add sections array
+ macho_section<P>* msect = (macho_section<P>*)&p[sizeof(macho_segment_command<P>)];
+ for (std::vector<ld::Internal::FinalSection*>::iterator sit = _state.sections.begin(); sit != _state.sections.end(); ++sit) {
+ ld::Internal::FinalSection* fsect = *sit;
+ if ( fsect->isSectionHidden() )
+ continue;
+ if ( fsect->type() == ld::Section::typeTentativeDefs )
+ continue;
+ msect->set_sectname(fsect->sectionName());
+ msect->set_segname(fsect->segmentName());
+ msect->set_addr(fsect->address);
+ msect->set_size(fsect->size);
+ msect->set_offset(fsect->fileOffset);
+ msect->set_align(fsect->alignment);
+ msect->set_reloff((fsect->relocCount == 0) ? 0 : _writer.sectionRelocationsSection->fileOffset + fsect->relocStart * sizeof(macho_relocation_info<P>));
+ msect->set_nreloc(fsect->relocCount);
+ msect->set_flags(sectionFlags(fsect));
+ msect->set_reserved1(fsect->indirectSymTabStartIndex);
+ msect->set_reserved2(fsect->indirectSymTabElementSize);
+ // update segment info
+ if ( cmd->fileoff() == 0 )
+ cmd->set_fileoff(fsect->fileOffset);
+ cmd->set_vmsize(fsect->address + fsect->size - cmd->vmaddr());
+ if ( (fsect->type() != ld::Section::typeZeroFill) && (fsect->type() != ld::Section::typeTentativeDefs) )
+ cmd->set_filesize(fsect->fileOffset + fsect->size - cmd->fileoff());
+ ++msect;
+ }
+ cmd->set_cmdsize(sizeof(macho_segment_command<P>) + cmd->nsects()*sizeof(macho_section<P>));
+ return p + cmd->cmdsize();
+}
+
+struct SegInfo {
+ SegInfo(const char* n, const Options&);
+ const char* segName;
+ uint32_t nonHiddenSectionCount;
+ uint32_t maxProt;
+ uint32_t initProt;
+ std::vector<ld::Internal::FinalSection*> sections;
+};
+
+
+SegInfo::SegInfo(const char* n, const Options& opts)
+ : segName(n), nonHiddenSectionCount(0), maxProt(opts.maxSegProtection(n)), initProt(opts.initialSegProtection(n))
+{
+}
+
+
+template <typename A>
+uint32_t HeaderAndLoadCommandsAtom<A>::sectionFlags(ld::Internal::FinalSection* sect) const
+{
+ uint32_t bits;
+ switch ( sect->type() ) {
+ case ld::Section::typeUnclassified:
+ if ( strcmp(sect->segmentName(), "__OBJC") == 0 )
+ return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
+ else if ( (strcmp(sect->sectionName(), "__objc_classlist") == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
+ return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
+ else if ( (strcmp(sect->sectionName(), "__objc_catlist") == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
+ return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
+ else if ( (strncmp(sect->sectionName(), "__objc_superrefs", 16) == 0) && (strcmp(sect->segmentName(), "__DATA") == 0) )
+ return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
+ else
+ return S_REGULAR;
+ case ld::Section::typeCode:
+ bits = S_REGULAR | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS;
+ if ( sect->hasLocalRelocs && ! _writer.pieDisabled )
+ bits |= S_ATTR_LOC_RELOC;
+ if ( sect->hasExternalRelocs )
+ bits |= S_ATTR_EXT_RELOC;
+ return bits;
+ case ld::Section::typePageZero:
+ return S_REGULAR;
+ case ld::Section::typeImportProxies:
+ return S_REGULAR;
+ case ld::Section::typeLinkEdit:
+ return S_REGULAR;
+ case ld::Section::typeMachHeader:
+ return S_REGULAR;
+ case ld::Section::typeStack:
+ return S_REGULAR;
+ case ld::Section::typeLiteral4:
+ return S_4BYTE_LITERALS;
+ case ld::Section::typeLiteral8:
+ return S_8BYTE_LITERALS;
+ case ld::Section::typeLiteral16:
+ return S_16BYTE_LITERALS;
+ case ld::Section::typeConstants:
+ return S_REGULAR;
+ case ld::Section::typeTempLTO:
+ assert(0 && "typeTempLTO should not make it to final linked image");
+ return S_REGULAR;
+ case ld::Section::typeAbsoluteSymbols:
+ assert(0 && "typeAbsoluteSymbols should not make it to final linked image");
+ return S_REGULAR;
+ case ld::Section::typeCString:
+ case ld::Section::typeNonStdCString:
+ return S_CSTRING_LITERALS;
+ case ld::Section::typeCStringPointer:
+ return S_LITERAL_POINTERS | S_ATTR_NO_DEAD_STRIP;
+ case ld::Section::typeUTF16Strings:
+ return S_REGULAR;
+ case ld::Section::typeCFString:
+ return S_REGULAR;
+ case ld::Section::typeObjC1Classes:
+ return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
+ case ld::Section::typeCFI:
+ return S_REGULAR;
+ case ld::Section::typeLSDA:
+ return S_REGULAR;
+ case ld::Section::typeDtraceDOF:
+ return S_DTRACE_DOF;
+ case ld::Section::typeUnwindInfo:
+ return S_REGULAR;
+ case ld::Section::typeObjCClassRefs:
+ case ld::Section::typeObjC2CategoryList:
+ return S_REGULAR | S_ATTR_NO_DEAD_STRIP;
+ case ld::Section::typeZeroFill:
+ if ( _options.optimizeZeroFill() )
+ return S_ZEROFILL;
+ else
+ return S_REGULAR;
+ case ld::Section::typeTentativeDefs:
+ assert(0 && "typeTentativeDefs should not make it to final linked image");
+ return S_REGULAR;
+ case ld::Section::typeLazyPointer:
+ case ld::Section::typeLazyPointerClose:
+ return S_LAZY_SYMBOL_POINTERS;
+ case ld::Section::typeStubClose:
+ case ld::Section::typeStub:
+ if ( sect->hasLocalRelocs )
+ return S_SYMBOL_STUBS | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_LOC_RELOC;
+ else
+ return S_SYMBOL_STUBS | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS;
+ case ld::Section::typeNonLazyPointer:
+ return S_NON_LAZY_SYMBOL_POINTERS;
+ case ld::Section::typeDyldInfo:
+ return S_REGULAR;
+ case ld::Section::typeLazyDylibPointer:
+ return S_LAZY_DYLIB_SYMBOL_POINTERS;
+ case ld::Section::typeStubHelper:
+ if ( sect->hasLocalRelocs )
+ return S_REGULAR | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS | S_ATTR_LOC_RELOC;
+ else
+ return S_REGULAR | S_ATTR_SOME_INSTRUCTIONS | S_ATTR_PURE_INSTRUCTIONS;
+ case ld::Section::typeInitializerPointers:
+ return S_MOD_INIT_FUNC_POINTERS;
+ case ld::Section::typeTerminatorPointers:
+ return S_MOD_TERM_FUNC_POINTERS;
+ case ld::Section::typeTLVInitialValues:
+ return S_THREAD_LOCAL_REGULAR;
+ case ld::Section::typeTLVZeroFill:
+ return S_THREAD_LOCAL_ZEROFILL;
+ case ld::Section::typeTLVDefs:
+ return S_THREAD_LOCAL_VARIABLES;
+ case ld::Section::typeTLVInitializerPointers:
+ return S_THREAD_LOCAL_INIT_FUNCTION_POINTERS;
+ case ld::Section::typeTLVPointers:
+ return S_THREAD_LOCAL_VARIABLE_POINTERS;
+ case ld::Section::typeFirstSection:
+ assert(0 && "typeFirstSection should not make it to final linked image");
+ return S_REGULAR;
+ case ld::Section::typeLastSection:
+ assert(0 && "typeLastSection should not make it to final linked image");
+ return S_REGULAR;
+ }
+ return S_REGULAR;
+}
+
+
+template <typename A>
+bool HeaderAndLoadCommandsAtom<A>::sectionTakesNoDiskSpace(ld::Internal::FinalSection* sect) const
+{
+ switch ( sect->type() ) {
+ case ld::Section::typeZeroFill:
+ case ld::Section::typeTLVZeroFill:
+ return _options.optimizeZeroFill();
+ case ld::Section::typeAbsoluteSymbols:
+ case ld::Section::typeTentativeDefs:
+ case ld::Section::typeLastSection:
+ return true;
+ default:
+ break;
+ }
+ return false;
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySegmentLoadCommands(uint8_t* p) const
+{
+ // group sections into segments
+ std::vector<SegInfo> segs;
+ const char* lastSegName = "";
+ for (std::vector<ld::Internal::FinalSection*>::iterator it = _state.sections.begin(); it != _state.sections.end(); ++it) {
+ ld::Internal::FinalSection* sect = *it;
+ if ( _options.outputKind() == Options::kPreload ) {
+ if ( (*it)->type() == ld::Section::typeMachHeader )
+ continue; // for -preload, don't put hidden __HEADER segment into output
+ if ( (*it)->type() == ld::Section::typeLinkEdit )
+ continue; // for -preload, don't put hidden __LINKEDIT segment into output
+ }
+ if ( strcmp(lastSegName, sect->segmentName()) != 0 ) {
+ SegInfo si(sect->segmentName(), _options);
+ segs.push_back(si);
+ lastSegName = sect->segmentName();
+ }
+ if ( ! sect->isSectionHidden() )
+ segs.back().nonHiddenSectionCount++;
+ segs.back().sections.push_back(sect);
+ }
+ // write out segment load commands for each section with trailing sections
+ for (std::vector<SegInfo>::iterator it = segs.begin(); it != segs.end(); ++it) {
+ SegInfo& si = *it;
+ ld::Internal::FinalSection* lastNonZeroFillSection = NULL;
+ for (int i=si.sections.size()-1; i >= 0; --i) {
+ if ( !sectionTakesNoDiskSpace(si.sections[i]) ) {
+ lastNonZeroFillSection = si.sections[i];
+ break;
+ }
+ }
+ uint64_t vmsize = si.sections.back()->address + si.sections.back()->size - si.sections.front()->address;
+ vmsize = ((vmsize+_options.segmentAlignment()-1) & (-_options.segmentAlignment()));
+ uint64_t filesize = 0;
+ if ( lastNonZeroFillSection != NULL ) {
+ filesize = lastNonZeroFillSection->address + lastNonZeroFillSection->size - si.sections.front()->address;
+ // round up all segments to page aligned, except __LINKEDIT
+ if ( (si.sections[0]->type() != ld::Section::typeLinkEdit) && (si.sections[0]->type() != ld::Section::typeImportProxies) )
+ filesize = (filesize + _options.segmentAlignment()-1) & (-_options.segmentAlignment());
+ }
+ if ( si.sections.front()->type() == ld::Section::typePageZero )
+ filesize = 0;
+ else if ( si.sections.front()->type() == ld::Section::typeStack )
+ filesize = 0;
+ macho_segment_command<P>* segCmd = (macho_segment_command<P>*)p;
+ segCmd->set_cmd(macho_segment_command<P>::CMD);
+ segCmd->set_cmdsize(sizeof(macho_segment_command<P>) + si.nonHiddenSectionCount*sizeof(macho_section<P>));
+ segCmd->set_segname(si.sections.front()->segmentName());
+ segCmd->set_vmaddr(si.sections.front()->address);
+ segCmd->set_vmsize(vmsize);
+ segCmd->set_fileoff(si.sections.front()->fileOffset);
+ segCmd->set_filesize(filesize);
+ segCmd->set_maxprot(si.maxProt);
+ segCmd->set_initprot(si.initProt);
+ segCmd->set_nsects(si.nonHiddenSectionCount);
+ segCmd->set_flags(0);
+ p += sizeof(macho_segment_command<P>);
+ macho_section<P>* msect = (macho_section<P>*)p;
+ for (std::vector<ld::Internal::FinalSection*>::iterator sit = si.sections.begin(); sit != si.sections.end(); ++sit) {
+ ld::Internal::FinalSection* fsect = *sit;
+ if ( ! fsect->isSectionHidden() ) {
+ msect->set_sectname(fsect->sectionName());
+ msect->set_segname(fsect->segmentName());
+ msect->set_addr(fsect->address);
+ msect->set_size(fsect->size);
+ msect->set_offset(sectionTakesNoDiskSpace(fsect) ? 0 : fsect->fileOffset);
+ msect->set_align(fsect->alignment);
+ msect->set_reloff(0);
+ msect->set_nreloc(0);
+ msect->set_flags(sectionFlags(fsect));
+ msect->set_reserved1(fsect->indirectSymTabStartIndex);
+ msect->set_reserved2(fsect->indirectSymTabElementSize);
+ p += sizeof(macho_section<P>);
+ ++msect;
+ }
+ }
+ }
+
+ return p;
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySymbolTableLoadCommand(uint8_t* p) const
+{
+ // build LC_SYMTAB command
+ macho_symtab_command<P>* symbolTableCmd = (macho_symtab_command<P>*)p;
+ symbolTableCmd->set_cmd(LC_SYMTAB);
+ symbolTableCmd->set_cmdsize(sizeof(macho_symtab_command<P>));
+ symbolTableCmd->set_nsyms(_writer.symbolTableSection->size/sizeof(macho_nlist<P>));
+ symbolTableCmd->set_symoff(_writer.symbolTableSection->size == 0 ? 0 : _writer.symbolTableSection->fileOffset);
+ symbolTableCmd->set_stroff(_writer.stringPoolSection->size == 0 ? 0 : _writer.stringPoolSection->fileOffset );
+ symbolTableCmd->set_strsize(_writer.stringPoolSection->size);
+ return p + sizeof(macho_symtab_command<P>);
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyDynamicSymbolTableLoadCommand(uint8_t* p) const
+{
+ // build LC_SYMTAB command
+ macho_dysymtab_command<P>* dynamicSymbolTableCmd = (macho_dysymtab_command<P>*)p;
+ dynamicSymbolTableCmd->set_cmd(LC_DYSYMTAB);
+ dynamicSymbolTableCmd->set_cmdsize(sizeof(macho_dysymtab_command<P>));
+ dynamicSymbolTableCmd->set_ilocalsym(0);
+ dynamicSymbolTableCmd->set_nlocalsym(_writer._localSymbolsCount);
+ dynamicSymbolTableCmd->set_iextdefsym(dynamicSymbolTableCmd->ilocalsym()+dynamicSymbolTableCmd->nlocalsym());
+ dynamicSymbolTableCmd->set_nextdefsym(_writer._globalSymbolsCount);
+ dynamicSymbolTableCmd->set_iundefsym(dynamicSymbolTableCmd->iextdefsym()+dynamicSymbolTableCmd->nextdefsym());
+ dynamicSymbolTableCmd->set_nundefsym(_writer._importSymbolsCount);
+
+ // FIX ME: support for 10.3 dylibs which need modules
+ //if ( fWriter.fModuleInfoAtom != NULL ) {
+ // dynamicSymbolTableCmd->set_tocoff(fWriter.fModuleInfoAtom->getTableOfContentsFileOffset());
+ // dynamicSymbolTableCmd->set_ntoc(fWriter.fSymbolTableExportCount);
+ // dynamicSymbolTableCmd->set_modtaboff(fWriter.fModuleInfoAtom->getModuleTableFileOffset());
+ // dynamicSymbolTableCmd->set_nmodtab(1);
+ // dynamicSymbolTableCmd->set_extrefsymoff(fWriter.fModuleInfoAtom->getReferencesFileOffset());
+ // dynamicSymbolTableCmd->set_nextrefsyms(fWriter.fModuleInfoAtom->getReferencesCount());
+ //}
+
+ bool hasIndirectSymbols = ( (_writer.indirectSymbolTableSection != NULL) && (_writer.indirectSymbolTableSection->size != 0) );
+ dynamicSymbolTableCmd->set_indirectsymoff(hasIndirectSymbols ? _writer.indirectSymbolTableSection->fileOffset : 0);
+ dynamicSymbolTableCmd->set_nindirectsyms( hasIndirectSymbols ? _writer.indirectSymbolTableSection->size/sizeof(uint32_t) : 0);
+
+ // FIX ME: support for classic relocations
+ if ( _options.outputKind() != Options::kObjectFile ) {
+ bool hasExternalRelocs = ( (_writer.externalRelocationsSection != NULL) && (_writer.externalRelocationsSection->size != 0) );
+ dynamicSymbolTableCmd->set_extreloff(hasExternalRelocs ? _writer.externalRelocationsSection->fileOffset : 0);
+ dynamicSymbolTableCmd->set_nextrel( hasExternalRelocs ? _writer.externalRelocationsSection->size/8 : 0);
+ bool hasLocalRelocs = ( (_writer.localRelocationsSection != NULL) && (_writer.localRelocationsSection->size != 0) );
+ dynamicSymbolTableCmd->set_locreloff(hasLocalRelocs ? _writer.localRelocationsSection->fileOffset : 0);
+ dynamicSymbolTableCmd->set_nlocrel (hasLocalRelocs ? _writer.localRelocationsSection->size/8 : 0);
+ }
+ return p + sizeof(macho_dysymtab_command<P>);
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyDyldInfoLoadCommand(uint8_t* p) const
+{
+ // build LC_DYLD_INFO command
+ macho_dyld_info_command<P>* cmd = (macho_dyld_info_command<P>*)p;
+
+ cmd->set_cmd(LC_DYLD_INFO_ONLY);
+ cmd->set_cmdsize(sizeof(macho_dyld_info_command<P>));
+ if ( _writer.rebaseSection->size != 0 ) {
+ cmd->set_rebase_off(_writer.rebaseSection->fileOffset);
+ cmd->set_rebase_size(_writer.rebaseSection->size);
+ }
+ if ( _writer.bindingSection->size != 0 ) {
+ cmd->set_bind_off(_writer.bindingSection->fileOffset);
+ cmd->set_bind_size(_writer.bindingSection->size);
+ }
+ if ( _writer.weakBindingSection->size != 0 ) {
+ cmd->set_weak_bind_off(_writer.weakBindingSection->fileOffset);
+ cmd->set_weak_bind_size(_writer.weakBindingSection->size);
+ }
+ if ( _writer.lazyBindingSection->size != 0 ) {
+ cmd->set_lazy_bind_off(_writer.lazyBindingSection->fileOffset);
+ cmd->set_lazy_bind_size(_writer.lazyBindingSection->size);
+ }
+ if ( _writer.exportSection->size != 0 ) {
+ cmd->set_export_off(_writer.exportSection->fileOffset);
+ cmd->set_export_size(_writer.exportSection->size);
+ }
+ return p + sizeof(macho_dyld_info_command<P>);
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyDyldLoadCommand(uint8_t* p) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_dylinker_command<P>) + strlen(_options.dyldInstallPath()) + 1);
+ macho_dylinker_command<P>* cmd = (macho_dylinker_command<P>*)p;
+ if ( _options.outputKind() == Options::kDyld )
+ cmd->set_cmd(LC_ID_DYLINKER);
+ else
+ cmd->set_cmd(LC_LOAD_DYLINKER);
+ cmd->set_cmdsize(sz);
+ cmd->set_name_offset();
+ strcpy((char*)&p[sizeof(macho_dylinker_command<P>)], _options.dyldInstallPath());
+ return p + sz;
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyDylibIDLoadCommand(uint8_t* p) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_dylib_command<P>) + strlen(_options.installPath()) + 1);
+ macho_dylib_command<P>* cmd = (macho_dylib_command<P>*)p;
+ cmd->set_cmd(LC_ID_DYLIB);
+ cmd->set_cmdsize(sz);
+ cmd->set_name_offset();
+ cmd->set_timestamp(1); // needs to be some constant value that is different than DylibLoadCommandsAtom uses
+ cmd->set_current_version(_options.currentVersion());
+ cmd->set_compatibility_version(_options.compatibilityVersion());
+ strcpy((char*)&p[sizeof(macho_dylib_command<P>)], _options.installPath());
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyRoutinesLoadCommand(uint8_t* p) const
+{
+ pint_t initAddr = _state.entryPoint->finalAddress();
+ if ( _state.entryPoint->isThumb() )
+ initAddr |= 1ULL;
+ macho_routines_command<P>* cmd = (macho_routines_command<P>*)p;
+ cmd->set_cmd(macho_routines_command<P>::CMD);
+ cmd->set_cmdsize(sizeof(macho_routines_command<P>));
+ cmd->set_init_address(initAddr);
+ return p + sizeof(macho_routines_command<P>);
+}
+
+
+template <typename A>
+void HeaderAndLoadCommandsAtom<A>::recopyUUIDCommand()
+{
+ assert(_uuidCmdInOutputBuffer != NULL);
+ _uuidCmdInOutputBuffer->set_uuid(_uuid);
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyUUIDLoadCommand(uint8_t* p) const
+{
+ macho_uuid_command<P>* cmd = (macho_uuid_command<P>*)p;
+ cmd->set_cmd(LC_UUID);
+ cmd->set_cmdsize(sizeof(macho_uuid_command<P>));
+ cmd->set_uuid(_uuid);
+ _uuidCmdInOutputBuffer = cmd; // save for later re-write by recopyUUIDCommand()
+ return p + sizeof(macho_uuid_command<P>);
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyVersionLoadCommand(uint8_t* p) const
+{
+ macho_version_min_command<P>* cmd = (macho_version_min_command<P>*)p;
+ ld::MacVersionMin macVersion = _options.macosxVersionMin();
+ ld::IPhoneVersionMin iphoneOSVersion = _options.iphoneOSVersionMin();
+ assert( (macVersion != ld::macVersionUnset) || (iphoneOSVersion != ld::iPhoneVersionUnset) );
+ if ( macVersion != ld::macVersionUnset ) {
+ cmd->set_cmd(LC_VERSION_MIN_MACOSX);
+ cmd->set_cmdsize(sizeof(macho_version_min_command<P>));
+ cmd->set_version((uint32_t)macVersion);
+ cmd->set_reserved(0);
+ }
+ else {
+ cmd->set_cmd(LC_VERSION_MIN_IPHONEOS);
+ cmd->set_cmdsize(sizeof(macho_version_min_command<P>));
+ cmd->set_version((uint32_t)iphoneOSVersion);
+ cmd->set_reserved(0);
+ }
+ return p + sizeof(macho_version_min_command<P>);
+}
+
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<ppc>::threadLoadCommandSize() const
+{
+ return this->alignedSize(16 + 40*4); // base size + PPC_THREAD_STATE_COUNT * 4
+}
+
+
+template <>
+uint8_t* HeaderAndLoadCommandsAtom<ppc>::copyThreadsLoadCommand(uint8_t* p) const
+{
+ assert(_state.entryPoint != NULL);
+ pint_t start = _state.entryPoint->finalAddress();
+ macho_thread_command<ppc::P>* cmd = (macho_thread_command<ppc::P>*)p;
+ cmd->set_cmd(LC_UNIXTHREAD);
+ cmd->set_cmdsize(threadLoadCommandSize());
+ cmd->set_flavor(1); // PPC_THREAD_STATE
+ cmd->set_count(40); // PPC_THREAD_STATE_COUNT;
+ cmd->set_thread_register(0, start);
+ if ( _options.hasCustomStack() )
+ cmd->set_thread_register(3, _options.customStackAddr()); // r1
+ return p + threadLoadCommandSize();
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<ppc64>::threadLoadCommandSize() const
+{
+ return this->alignedSize(16 + 76*4); // base size + PPC_THREAD_STATE64_COUNT * 4
+}
+
+template <>
+uint8_t* HeaderAndLoadCommandsAtom<ppc64>::copyThreadsLoadCommand(uint8_t* p) const
+{
+ assert(_state.entryPoint != NULL);
+ pint_t start = _state.entryPoint->finalAddress();
+ macho_thread_command<ppc::P>* cmd = (macho_thread_command<ppc::P>*)p;
+ cmd->set_cmd(LC_UNIXTHREAD);
+ cmd->set_cmdsize(threadLoadCommandSize());
+ cmd->set_flavor(5); // PPC_THREAD_STATE64
+ cmd->set_count(76); // PPC_THREAD_STATE64_COUNT;
+ cmd->set_thread_register(0, start);
+ if ( _options.hasCustomStack() )
+ cmd->set_thread_register(3, _options.customStackAddr()); // r1
+ return p + threadLoadCommandSize();
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<x86>::threadLoadCommandSize() const
+{
+ return this->alignedSize(16 + 16*4); // base size + i386_THREAD_STATE_COUNT * 4
+}
+
+template <>
+uint8_t* HeaderAndLoadCommandsAtom<x86>::copyThreadsLoadCommand(uint8_t* p) const
+{
+ assert(_state.entryPoint != NULL);
+ pint_t start = _state.entryPoint->finalAddress();
+ macho_thread_command<P>* cmd = (macho_thread_command<P>*)p;
+ cmd->set_cmd(LC_UNIXTHREAD);
+ cmd->set_cmdsize(threadLoadCommandSize());
+ cmd->set_flavor(1); // i386_THREAD_STATE
+ cmd->set_count(16); // i386_THREAD_STATE_COUNT;
+ cmd->set_thread_register(10, start);
+ if ( _options.hasCustomStack() )
+ cmd->set_thread_register(7, _options.customStackAddr()); // r1
+ return p + threadLoadCommandSize();
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<x86_64>::threadLoadCommandSize() const
+{
+ return this->alignedSize(16 + x86_THREAD_STATE64_COUNT * 4);
+}
+
+template <>
+uint8_t* HeaderAndLoadCommandsAtom<x86_64>::copyThreadsLoadCommand(uint8_t* p) const
+{
+ assert(_state.entryPoint != NULL);
+ pint_t start = _state.entryPoint->finalAddress();
+ macho_thread_command<P>* cmd = (macho_thread_command<P>*)p;
+ cmd->set_cmd(LC_UNIXTHREAD);
+ cmd->set_cmdsize(threadLoadCommandSize());
+ cmd->set_flavor(x86_THREAD_STATE64);
+ cmd->set_count(x86_THREAD_STATE64_COUNT);
+ cmd->set_thread_register(16, start); // rip
+ if ( _options.hasCustomStack() )
+ cmd->set_thread_register(7, _options.customStackAddr()); // r1
+ return p + threadLoadCommandSize();
+}
+
+template <>
+uint32_t HeaderAndLoadCommandsAtom<arm>::threadLoadCommandSize() const
+{
+ return this->alignedSize(16 + 17 * 4); // base size + ARM_THREAD_STATE_COUNT * 4
+}
+
+template <>
+uint8_t* HeaderAndLoadCommandsAtom<arm>::copyThreadsLoadCommand(uint8_t* p) const
+{
+ assert(_state.entryPoint != NULL);
+ pint_t start = _state.entryPoint->finalAddress();
+ if ( _state.entryPoint->isThumb() )
+ start |= 1ULL;
+ macho_thread_command<P>* cmd = (macho_thread_command<P>*)p;
+ cmd->set_cmd(LC_UNIXTHREAD);
+ cmd->set_cmdsize(threadLoadCommandSize());
+ cmd->set_flavor(1);
+ cmd->set_count(17);
+ cmd->set_thread_register(15, start); // pc
+ if ( _options.hasCustomStack() )
+ cmd->set_thread_register(13, _options.customStackAddr()); // sp
+ return p + threadLoadCommandSize();
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyEncryptionLoadCommand(uint8_t* p) const
+{
+ macho_encryption_info_command<P>* cmd = (macho_encryption_info_command<P>*)p;
+ cmd->set_cmd(LC_ENCRYPTION_INFO);
+ cmd->set_cmdsize(sizeof(macho_encryption_info_command<P>));
+ assert(_writer.encryptedTextStartOffset() != 0);
+ assert(_writer.encryptedTextEndOffset() != 0);
+ cmd->set_cryptoff(_writer.encryptedTextStartOffset());
+ cmd->set_cryptsize(_writer.encryptedTextEndOffset()-_writer.encryptedTextStartOffset());
+ cmd->set_cryptid(0);
+ return p + sizeof(macho_encryption_info_command<P>);
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySplitSegInfoLoadCommand(uint8_t* p) const
+{
+ macho_linkedit_data_command<P>* cmd = (macho_linkedit_data_command<P>*)p;
+ cmd->set_cmd(LC_SEGMENT_SPLIT_INFO);
+ cmd->set_cmdsize(sizeof(macho_linkedit_data_command<P>));
+ cmd->set_dataoff(_writer.splitSegInfoSection->fileOffset);
+ cmd->set_datasize(_writer.splitSegInfoSection->size);
+ return p + sizeof(macho_linkedit_data_command<P>);
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyDylibLoadCommand(uint8_t* p, const ld::dylib::File* dylib) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_dylib_command<P>) + strlen(dylib->installPath()) + 1);
+ macho_dylib_command<P>* cmd = (macho_dylib_command<P>*)p;
+ // <rdar://problem/5529626> If only weak_import symbols are used, linker should use LD_LOAD_WEAK_DYLIB
+ bool autoWeakLoadDylib = false; // FIX
+ //( (fWriter.fDylibReadersWithWeakImports.count(fInfo.reader) > 0)
+ //&& (fWriter.fDylibReadersWithNonWeakImports.count(fInfo.reader) == 0) );
+ if ( dylib->willBeLazyLoadedDylib() )
+ cmd->set_cmd(LC_LAZY_LOAD_DYLIB);
+ else if ( dylib->willBeWeakLinked() || autoWeakLoadDylib )
+ cmd->set_cmd(LC_LOAD_WEAK_DYLIB);
+ else if ( dylib->willBeReExported() && _options.useSimplifiedDylibReExports() )
+ cmd->set_cmd(LC_REEXPORT_DYLIB);
+ else if ( dylib->willBeUpwardDylib() && _options.useUpwardDylibs() )
+ cmd->set_cmd(LC_LOAD_UPWARD_DYLIB);
+ else
+ cmd->set_cmd(LC_LOAD_DYLIB);
+ cmd->set_cmdsize(sz);
+ cmd->set_timestamp(2); // needs to be some constant value that is different than DylibIDLoadCommandsAtom uses
+ cmd->set_current_version(dylib->currentVersion());
+ cmd->set_compatibility_version(dylib->compatibilityVersion());
+ cmd->set_name_offset();
+ strcpy((char*)&p[sizeof(macho_dylib_command<P>)], dylib->installPath());
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyRPathLoadCommand(uint8_t* p, const char* path) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_rpath_command<P>) + strlen(path) + 1);
+ macho_rpath_command<P>* cmd = (macho_rpath_command<P>*)p;
+ cmd->set_cmd(LC_RPATH);
+ cmd->set_cmdsize(sz);
+ cmd->set_path_offset();
+ strcpy((char*)&p[sizeof(macho_rpath_command<P>)], path);
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySubFrameworkLoadCommand(uint8_t* p) const
+{
+ const char* umbrellaName = _options.umbrellaName();
+ uint32_t sz = alignedSize(sizeof(macho_sub_framework_command<P>) + strlen(umbrellaName) + 1);
+ macho_sub_framework_command<P>* cmd = (macho_sub_framework_command<P>*)p;
+ cmd->set_cmd(LC_SUB_FRAMEWORK);
+ cmd->set_cmdsize(sz);
+ cmd->set_umbrella_offset();
+ strcpy((char*)&p[sizeof(macho_sub_framework_command<P>)], umbrellaName);
+ return p + sz;
+}
+
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyAllowableClientLoadCommand(uint8_t* p, const char* client) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_sub_client_command<P>) + strlen(client) + 1);
+ macho_sub_client_command<P>* cmd = (macho_sub_client_command<P>*)p;
+ cmd->set_cmd(LC_SUB_CLIENT);
+ cmd->set_cmdsize(sz);
+ cmd->set_client_offset();
+ strcpy((char*)&p[sizeof(macho_sub_client_command<P>)], client);
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyDyldEnvLoadCommand(uint8_t* p, const char* env) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_dylinker_command<P>) + strlen(env) + 1);
+ macho_dylinker_command<P>* cmd = (macho_dylinker_command<P>*)p;
+ cmd->set_cmd(LC_DYLD_ENVIRONMENT);
+ cmd->set_cmdsize(sz);
+ cmd->set_name_offset();
+ strcpy((char*)&p[sizeof(macho_dylinker_command<P>)], env);
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySubUmbrellaLoadCommand(uint8_t* p, const char* nm) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_sub_umbrella_command<P>) + strlen(nm) + 1);
+ macho_sub_umbrella_command<P>* cmd = (macho_sub_umbrella_command<P>*)p;
+ cmd->set_cmd(LC_SUB_UMBRELLA);
+ cmd->set_cmdsize(sz);
+ cmd->set_sub_umbrella_offset();
+ strcpy((char*)&p[sizeof(macho_sub_umbrella_command<P>)], nm);
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copySubLibraryLoadCommand(uint8_t* p, const char* nm) const
+{
+ uint32_t sz = alignedSize(sizeof(macho_sub_library_command<P>) + strlen(nm) + 1);
+ macho_sub_library_command<P>* cmd = (macho_sub_library_command<P>*)p;
+ cmd->set_cmd(LC_SUB_LIBRARY);
+ cmd->set_cmdsize(sz);
+ cmd->set_sub_library_offset();
+ strcpy((char*)&p[sizeof(macho_sub_library_command<P>)], nm);
+ return p + sz;
+}
+
+template <typename A>
+uint8_t* HeaderAndLoadCommandsAtom<A>::copyFunctionStartsLoadCommand(uint8_t* p) const
+{
+ macho_linkedit_data_command<P>* cmd = (macho_linkedit_data_command<P>*)p;
+ cmd->set_cmd(LC_FUNCTION_STARTS);
+ cmd->set_cmdsize(sizeof(macho_linkedit_data_command<P>));
+ cmd->set_dataoff(_writer.functionStartsSection->fileOffset);
+ cmd->set_datasize(_writer.functionStartsSection->size);
+ return p + sizeof(macho_linkedit_data_command<P>);
+}
+
+
+template <typename A>
+void HeaderAndLoadCommandsAtom<A>::copyRawContent(uint8_t buffer[]) const
+{
+ macho_header<P>* mh = (macho_header<P>*)buffer;
+ bzero(buffer, this->size());
+
+ // copy mach_header
+ mh->set_magic(this->magic());
+ mh->set_cputype(this->cpuType());
+ mh->set_cpusubtype(this->cpuSubType());
+ mh->set_filetype(this->fileType());
+ mh->set_ncmds(this->commandsCount());
+ mh->set_sizeofcmds(this->size()-sizeof(macho_header<P>));
+ mh->set_flags(this->flags());
+
+ // copy load commands
+ uint8_t* p = &buffer[sizeof(macho_header<P>)];
+
+ if ( _options.outputKind() == Options::kObjectFile )
+ p = this->copySingleSegmentLoadCommand(p);
+ else
+ p = this->copySegmentLoadCommands(p);
+
+ if ( _hasDylibIDLoadCommand )
+ p = this->copyDylibIDLoadCommand(p);
+
+ if ( _hasDyldInfoLoadCommand )
+ p = this->copyDyldInfoLoadCommand(p);
+
+ if ( _hasSymbolTableLoadCommand )
+ p = this->copySymbolTableLoadCommand(p);
+
+ if ( _hasDynamicSymbolTableLoadCommand )
+ p = this->copyDynamicSymbolTableLoadCommand(p);
+
+ if ( _hasDyldLoadCommand )
+ p = this->copyDyldLoadCommand(p);
+
+ if ( _hasRoutinesLoadCommand )
+ p = this->copyRoutinesLoadCommand(p);
+
+ if ( _hasUUIDLoadCommand )
+ p = this->copyUUIDLoadCommand(p);
+
+ if ( _hasVersionLoadCommand )
+ p = this->copyVersionLoadCommand(p);
+
+ if ( _hasThreadLoadCommand )
+ p = this->copyThreadsLoadCommand(p);
+
+ if ( _hasEncryptionLoadCommand )
+ p = this->copyEncryptionLoadCommand(p);
+
+ if ( _hasSplitSegInfoLoadCommand )
+ p = this->copySplitSegInfoLoadCommand(p);
+
+ for(uint32_t ord=1; ord <= _writer.dylibCount(); ++ord) {
+ p = this->copyDylibLoadCommand(p, _writer.dylibByOrdinal(ord));
+ }
+
+ if ( _hasRPathLoadCommands ) {
+ const std::vector<const char*>& rpaths = _options.rpaths();
+ for (std::vector<const char*>::const_iterator it = rpaths.begin(); it != rpaths.end(); ++it) {
+ p = this->copyRPathLoadCommand(p, *it);
+ }
+ }
+
+ if ( _hasSubFrameworkLoadCommand )
+ p = this->copySubFrameworkLoadCommand(p);
+
+ for (std::vector<const char*>::const_iterator it = _subLibraryNames.begin(); it != _subLibraryNames.end(); ++it) {
+ p = this->copySubLibraryLoadCommand(p, *it);
+ }
+
+ for (std::vector<const char*>::const_iterator it = _subUmbrellaNames.begin(); it != _subUmbrellaNames.end(); ++it) {
+ p = this->copySubUmbrellaLoadCommand(p, *it);
+ }
+
+ if ( _allowableClientLoadCommmandsCount != 0 ) {
+ const std::vector<const char*>& clients = _options.allowableClients();
+ for (std::vector<const char*>::const_iterator it = clients.begin(); it != clients.end(); ++it) {
+ p = this->copyAllowableClientLoadCommand(p, *it);
+ }
+ }
+
+ if ( _dyldEnvironExrasCount != 0 ) {
+ const std::vector<const char*>& extras = _options.dyldEnvironExtras();
+ for (std::vector<const char*>::const_iterator it = extras.begin(); it != extras.end(); ++it) {
+ p = this->copyDyldEnvLoadCommand(p, *it);
+ }
+ }
+
+ if ( _hasFunctionStartsLoadCommand )
+ p = this->copyFunctionStartsLoadCommand(p);
+
+}
+
+
+
+} // namespace tool
+} // namespace ld
+
+#endif // __HEADER_LOAD_COMMANDS_HPP__
projects / apple / ld64.git / blobdiff